WO1994029104A1 - Packaging material comprising a water-soluble film - Google Patents

Packaging material comprising a water-soluble film Download PDF

Info

Publication number
WO1994029104A1
WO1994029104A1 PCT/IB1994/000148 IB9400148W WO9429104A1 WO 1994029104 A1 WO1994029104 A1 WO 1994029104A1 IB 9400148 W IB9400148 W IB 9400148W WO 9429104 A1 WO9429104 A1 WO 9429104A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
water
inner layer
soluble polymer
bonded
Prior art date
Application number
PCT/IB1994/000148
Other languages
French (fr)
Inventor
Ryo Yamashita
Kenichi Kitagaki
Takahiro Matsubara
Mikio Takenaka
Original Assignee
Ciba-Geigy Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=15868180&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1994029104(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority to CA002163655A priority Critical patent/CA2163655C/en
Priority to AU67608/94A priority patent/AU681149B2/en
Priority to EP94915687A priority patent/EP0707537B2/en
Priority to US08/766,323 priority patent/US5827586A/en
Priority to DE69413978T priority patent/DE69413978T3/en
Application filed by Ciba-Geigy Ag filed Critical Ciba-Geigy Ag
Priority to BR9406825A priority patent/BR9406825A/en
Priority to RU96101147A priority patent/RU2129081C1/en
Priority to PL94311738A priority patent/PL311738A1/en
Priority to SK1561-95A priority patent/SK156195A3/en
Priority to KR1019950705549A priority patent/KR100315141B1/en
Publication of WO1994029104A1 publication Critical patent/WO1994029104A1/en
Priority to FI955963A priority patent/FI955963A/en
Priority to NO955069A priority patent/NO955069L/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/06—Interconnection of layers permitting easy separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/46—Applications of disintegrable, dissolvable or edible materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • B32B2255/205—Metallic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/728—Hydrophilic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/73—Hydrophobic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1303—Paper containing [e.g., paperboard, cardboard, fiberboard, etc.]
    • Y10T428/1307—Bag or tubular film [e.g., pouch, flexible food casing, envelope, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1334—Nonself-supporting tubular film or bag [e.g., pouch, envelope, packet, etc.]
    • Y10T428/1338—Elemental metal containing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1334—Nonself-supporting tubular film or bag [e.g., pouch, envelope, packet, etc.]
    • Y10T428/1341—Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/1355—Elemental metal containing [e.g., substrate, foil, film, coating, etc.]
    • Y10T428/1359—Three or more layers [continuous layer]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/1379—Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/19—Sheets or webs edge spliced or joined

Definitions

  • Packaging material comprising a water-soluble film
  • the present invention relates to a container for use in dividingly packaging chemical pre ⁇ parations, particularly pesticide preparations, and to a film for forming said container.
  • a chemical preparation such as pesticide preparation has so far been made into an article by directly filling a container with the preparation and packaging the container, whether the preparation is a solid or a liquid. Otherwise, an article has been made by packing a pre ⁇ paration in an inner bag made of water-soluble film and further packaging the inner bag thus obtained into a prior type of direct packaging container to form a double package.
  • a pesticide having been packed in an inner bag made of water-soluble film is further packaged in an outer packaging container in the form of double package, however, the process of packaging involves two steps, namely the first step for dividingly packing the pesticide into inner bags and the second step for introducing and packaging one or more inner bags into one outer bag, and such a process is not economical from the viewpoint of working efficiency. Further, since the process involves the two packaging steps, two kinds of packaging machines are necessary, namely the first packaging machine for packing a pesticide into inner bags on the one hand and the second packaging machine for sealing the outer bags on the other hand.
  • a packaging work using a water-soluble film has to be carried out in an appropriately air-conditioned environment because the water-soluble film is susceptible to the influence of atmospheric conditions such as humidity, temperature, etc.
  • the insertion of inner bags into the outer bag must be carried out manually because the inner bags are soft in nature and leakage of content from inner bags must be prevented carefully, and such a manual operation makes automation of the inserting work quite diffi ⁇ cult.
  • the aim of the present invention is to solve the above-mentioned problems in the prior packaging containers for chemical preparations.
  • One object of the present invention provides a packaging container capable of exhibiting the same function and effect as in the prior double package type of packaging container in ⁇ cluding water-soluble inner bags, which can be produced by using the same packaging materials as in the prior direct packing type of containers for chemical preparations in only one step of packaging process.
  • Another object of the present invention consists in providing a packaging bag wherein the dislocation of inner bags in the outer bag is prevented and the outer bag can sufficiently function as a protective bag.
  • a further object of the invention consists in providing a packaging film for forming the above-described packaging bag.
  • the packaging container for chemical preparations is a container formed by sealing multi-layer films each constituted of a water-soluble polymer film and at least one layer of water-insoluble film, wherein the inner layer of the container is constituted of a water-soluble polymer film, the outer layer of the container is constitu ⁇ ted of a water-insoluble film, and at least in the seal part, water-soluble polymer films of the inner layer are bonded to each other, a water-soluble polymer film of the inner layer and a water-insoluble film of the outer layer are bonded to each other, and the watersolub- le polymer films and water-insoluble films are readily releasable from one another.
  • the multi-layer film for forming a packaging container for che ⁇ mical preparations may be a product prepared by simply superposing a water-soluble poly ⁇ mer film and a water-insoluble film.
  • a bag-form container is made therefrom by sealing the films so that the water-soluble polymer film constructs the inside layer of the contai ⁇ ner.
  • the multi-layer film can be formed into a bag by the method of heat-sealing.
  • the heat seal part formed bet- ween the water-soluble polymer film of inner layer and the water-insoluble film of outer layer must be readily releasable from each other.
  • combination of the water- soluble polymer film and the water-insoluble film must be so selected that the two films are heat-sealable with each other and the heat seal part is readily releasable. Examples of such combination include partially saponified polyvinyl alcohol film as a water-soluble polymer film combined with completely saponified polyvinyl alcohol film or ethylene-vi- nyl acetate copolymer film as a water-insoluble film.
  • the multi-layer film may be formed into a bag by bonding it with a readily re ⁇ leasable adhesive.
  • a packaging container for chemical preparations according to the present invention can al ⁇ so be produced by forming, by means of heat sealing or by the use of a readily releasable adhesive, a laminated film wherein a water-soluble polymer film and a water-insoluble film are partially or wholly bonded together previously be thy method of welding or by the use of a readily releasable adhesive and said water-soluble polymer film and said water-in ⁇ soluble film are readily releasable from each other.
  • the partial bonding of the water-so ⁇ luble polymer film and water-insoluble film may be practiced spot- wise, stripe-wise or lat ⁇ tice-wise, or in a shape necessary for formation of intended bag, namely usually quadrila ⁇ teral-wise.
  • the water-soluble polymer films used in the invention may be any films, so far as they are soluble in water and have a necessary strength.
  • Examples of the polymer usable for for ⁇ ming a water-soluble polymer film of the invention include water-soluble synthetic poly ⁇ mers, water-soluble semisynthetic polymers and water-soluble natural polymers.
  • As the water-soluble synthetic polymer mention may be made of partially saponified polyvinyl alcohol, polyethers such as polyethylene oxide and the like, polyvinylpyrrolidone, ethyle- nically unsaturated acids such as acrylic acid, methacrylic acid, maleic acid and the like, and polymers formed from their salts.
  • water-soluble semisynthetic polymer mention may be made of cellulose derivati ⁇ ves such as carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose and the like; and starch derivatives such as cyclodextrin and the like.
  • water-soluble na- tural polymer mention may be made of carrageena, starch, gelatin, chitin and the like.
  • partially saponified polyvinyl alcohol is particularly preferable.
  • thermoplastic resin films As the water-insoluble film, thermoplastic resin films, laminated films prepared from two or more kinds of thermoplastic resin films, and laminated films prepared from a thermo ⁇ plastic resin film and paper, metallic foil, woven fabric or unwoven fabric can be used.
  • Preferable thermoplastic resins include polymers and copolymers of olefins such as ethy- lene, propylene, butene, pentene, hexene and the like; polymers and copolymers of vinyl compounds such as vinyl chloride, vinylidene chloride, vinylacetate, vinyl alcohol, acrylic ester, methacrylic ester, acrylonitrile, styrene and the like; polymers of diolefins such as butadiene, isoprene and the like; copolymers of the above-mentioned diolefins and the above mentioned olefins or vinyl compounds; polyamides; and polyesters such as poly ⁇ ethylene terephthalate and the like.
  • thermoplastic resin films are completely saponified polyvinyl alco ⁇ hol film, ethylene-vinyl acetate copolymer film, ethylene-vinyl alcohol copolymer film and the like.
  • Preferable water-insoluble films include laminated films prepared from multiple members of the above-mentioned thermoplastic resin films such as a laminated film prepared from an ethylene-vinyl acetate copolymer film and a polyethylene film or a nylon film, and thermoplastic resin films having a metallic foil layer or a vapor-deposited metal layer such as ethylene-vinyl acetate copolymer film having a vapor deposited aluminum layer or po ⁇ lyethylene terephthalate film having a vapor deposited aluminum layer.
  • Laminated films formed from one of the above-mentioned thermoplastic resin films and paper, woven fa ⁇ bric or unwoven fabric are also usable in the invention.
  • an adhe ⁇ sive prepared by blending ethylene-vinyl acetate copolymer or polystyrene as a base with styrene-butadiene block copolymer or the like
  • a hot melt adhesive prepared by blending ethylene-vinyl acetate copolymer and a wax as main ingredients with a caking material such as styrene polymer (for example, polyvinyltoluene), terpene polymer, rosin or the li ⁇ ke, etc.
  • a caking material such as styrene polymer (for example, polyvinyltoluene), terpene polymer, rosin or the li ⁇ ke, etc.
  • the chemical preparations to be packaged into the container of the present invention in- elude those for agricultural and horticultural uses, those for livestock raising uses and tho ⁇ se for domestic uses such as insecticide, bactericide, fungicide, herbicide, rodenticide, plant growth regulator, repellent, attractant, spreader and the like, as well as fertilizers, de ⁇ tergents, dyes, and other general chemical preparations.
  • Fig. 1 is a perspective view illustrating one embodiment of the packaging container for chemical preparations of the present invention.
  • Fig. 1 shows a container 1 of two superpo ⁇ sed sheets of multi-layer films, each constituted of a water-soluble film 3 and a water-in ⁇ soluble film 2, so that the water-soluble film layer 3 is inside, the films showing a heat- sealing of three sides of the superposed matter while leaving one side open (which may be sealed after filling).
  • a container similar to that of figure 1 may be produced by folding one sheet of the multi ⁇ layer film so that the water-soluble film comes inside, followed by sealing two sides of the folded multi-layer film while leaving the residual one side open. After introducing a che ⁇ mical preparation from the open side, the open side is sealed.
  • Fig. 2 is a schematic view illustrating one embodiment of the work for introducing and packaging a chemical preparation into the packaging container of the present invention.
  • Fig. 2 illustrates an example of a device for packaging a chemical preparation while for ⁇ ming a container.
  • a prescribed quantity of chemi ⁇ cal preparation is introduced into the folded matter by means of a filling machine 7, and thereafter the longitudinal side of the folded film is heat-sealed with heat sealer 8, and fi- nally a lateral line of the folded film is heat-sealed with a lateral heat-sealer 9.
  • the mark 10 denotes a heat seal part.
  • the water-insoluble film constituting the outer layer is peeled off, and the preparation packaged dividingly in the water-soluble film units are thrown into water together with the water-soluble film and then put to use.
  • Another object of the invention is the use of the container according to the invention for package of hazardous chemicals, especially pesticides.
  • the container is especially suitable for this use, since a person is neither contacted during filling nor preperation of a spraying composition; and the environment contamination is avoided, since no contaminated resi ⁇ dues remain.
  • PVA polyvinyl alco ⁇ hol
  • PET means polyethylene terephthalate.
  • a three sides-sealed laminate bag is prepared by using Solbron KC-35 (partially saponi ⁇ fied PVA resin film, manufactured by AICELO Co.) as a water-soluble film and Hicelon NP-40 (completely saponified PVA resin manufactured by AICELO Co.) as an outer pro ⁇ tective water-insoluble film by the method of heat sealing without intermediation of adhe ⁇ sive.
  • the bag thus obtained was left to stand in a thermostatted chamber kept at 40°C for one month to test its storage stability. As the result, both adhesive property and releasabili- ty are good between the water-soluble film and the outer protective film.
  • a four sides-sealed laminate bag is prepared by using Solbron KC-35 (partially saponified PVA resin film, manufactured by AICELO Co.) as a water-soluble film and Eval HS (ethylene-vinyl alcohol copolymer resin, manufactured by KURARAY Co.) as an outer protective water-insoluble film by the method of heat sealing without intermediation of adhesive.
  • the bag thus obtained was left to stand in a thermostatted chamber kept at 40°C for one month to test storage stability. As the result, both adhesive property and releasabi- lity are good between the water-soluble film and the outer protective film.
  • Example 3 A four sides-sealed laminate bag is prepared by using Solbron KC-35 (partially saponified PVA resin film, manufactured by AICELO Co.) as a water-soluble film and Eval HS/NY (laminate formed from ethylene-vinyl alcohol copolymer resin film and nylon film, manu ⁇ factured by KURARAY Co.) as an outer protective water-insoluble film by the method of heat sealing without intermediation of adhesive.
  • the bag thus obtained is left to stand in a thermostatted chamber kept at 40°C for one month to test storage stability. As the result, both adhesive property and releasability are good between the water-soluble film and the outer protective film.
  • a four sides-sealed laminate bag is prepared by using Solbron KC-35 (partially saponified PVA resin film, manufactured by AICELO Co.) as a water-soluble film and Eval VMXL (ethylene-vinyl alcohol copolymer resin film with a vapor-deposited aluminum layer, ma ⁇ nufactured by KURARAY Co.) as an outer protective water-insoluble film by the method of heat sealing without intermediation of adhesive.
  • the bag thus obtained is left to stand in a thermostatted chamber kept at 40°C for one month to test storage stability. As the result, both adhesive property and releasability are good between the water-soluble film and the outer protective film.
  • a four sides-sealed laminate bag is prepared by using Solbron KA-50 (partially saponified PVA resin film, manufactured by AICELO Co.) as a water-soluble film and a polyethyle ⁇ ne terephthalate laminate (aluminum vapor deposited PET/dry laminate PET) as an outer protective water-insoluble film through intermediation of a releasable adhesive.
  • Solbron KA-50 partially saponified PVA resin film, manufactured by AICELO Co.
  • a polyethyle ⁇ ne terephthalate laminate aluminum vapor deposited PET/dry laminate PET
  • a four sides-sealed laminate bag is prepared by using Soafil PSF 100 (natural carrageena film, manufactured by Mitsubishi Rayon Co.) as a water-soluble film and Hicelon NP-40 (completely saponified PVA resin, manufactured by AICELO Co.) as an outer protective water-insoluble film by the method of heat sealing without intermediation of adhesive.
  • Soafil PSF 100 natural carrageena film, manufactured by Mitsubishi Rayon Co.
  • Hicelon NP-40 completely saponified PVA resin, manufactured by AICELO Co.
  • a four sides-sealed laminate bag is prepared by using Soafil PSF 100 (natural carrageena film, manufactured by Mitsubishi Rayon Co.) as a water-soluble film and Eval HS (ethyle ⁇ ne-vinyl alcohol copolymer resin film, manufactured by KURARAY Co.) as an outer pro ⁇ tective water-insoluble film by the method of heat sealing without intermediation of adhe ⁇ sive.
  • Soafil PSF 100 natural carrageena film, manufactured by Mitsubishi Rayon Co.
  • Eval HS ethyle ⁇ ne-vinyl alcohol copolymer resin film, manufactured by KURARAY Co.
  • a water-soluble film is used as an inner bag and one or more inner bags are introduced and packaged in an outer bag, and such a process has necessitated two steps of procedure, namely a step for introducing a chemical preparation into inner bags and a step for inserting the inner bags containing the chemical preparation into an outer bag.
  • the packaging container for chemical prepara ⁇ tions according to the present invention, contrariwise, the work for packaging a chemical preparation into container is simplified to only one step.
  • the inner bags are liberated from the outer bag, so that the in ⁇ ner bags can be broken by the shock which may be applied at the time of transportation, which means that the outer bag, cannot function as a protective bag sufficiently.
  • the inner bag made of a water- soluble film is bonded to the water-insoluble outer bag at least in the seal part, so that the inner bag is protected against dislocation at the time of transportation and therefore against the breakage brought about by shocks.
  • the outer protective bag can easily be removed at the time of put ⁇ ting the preparation to use. Since the chemical preparation dividingly packaged in the wa ⁇ ter-soluble film can be used without taking it out of the water-soluble bag, the flying loss of chemical preparation can be prevented. Further, since the chemical preparation is brought into no direct contact with the skin, a safety of the worker can be assured.
  • the outer bag can be disposed with safety as a general waste.

Abstract

A packaging container for chemicals such as pesticides and the like and a laminated film for forming said container, wherein the inner layer of the laminated film is constituted of an inner bag made of a water-soluble polymer film and the outer layer of the laminated film is constituted of an outer bag made of a water-insoluble film, and at least in the seal part of the container, films constituting inner layer are bonded to each other and additionally the film constituting inner layer and the film constituting outer layer are bonded to each other, and the film constituting inner layer and the film constituting outer layer are releasable from each other.

Description

Packaging material comprising a water-soluble film
The present invention relates to a container for use in dividingly packaging chemical pre¬ parations, particularly pesticide preparations, and to a film for forming said container.
A chemical preparation such as pesticide preparation has so far been made into an article by directly filling a container with the preparation and packaging the container, whether the preparation is a solid or a liquid. Otherwise, an article has been made by packing a pre¬ paration in an inner bag made of water-soluble film and further packaging the inner bag thus obtained into a prior type of direct packaging container to form a double package.
If a pesticide having been packed in an inner bag made of water-soluble film is further packaged in an outer packaging container in the form of double package, however, the process of packaging involves two steps, namely the first step for dividingly packing the pesticide into inner bags and the second step for introducing and packaging one or more inner bags into one outer bag, and such a process is not economical from the viewpoint of working efficiency. Further, since the process involves the two packaging steps, two kinds of packaging machines are necessary, namely the first packaging machine for packing a pesticide into inner bags on the one hand and the second packaging machine for sealing the outer bags on the other hand. A packaging work using a water-soluble film has to be carried out in an appropriately air-conditioned environment because the water-soluble film is susceptible to the influence of atmospheric conditions such as humidity, temperature, etc. The insertion of inner bags into the outer bag must be carried out manually because the inner bags are soft in nature and leakage of content from inner bags must be prevented carefully, and such a manual operation makes automation of the inserting work quite diffi¬ cult.
Further, in a double package, the inner bags are liberated from the protective outer bag and therefore cannot sufficiently be protected from the shocks which may be applied to the in¬ ner bags in the course of transportation in spite of the protective function of the outer bag. Thus, as an disadvantage, breakage of inner bags can take place. The aim of the present invention is to solve the above-mentioned problems in the prior packaging containers for chemical preparations.
One object of the present invention provides a packaging container capable of exhibiting the same function and effect as in the prior double package type of packaging container in¬ cluding water-soluble inner bags, which can be produced by using the same packaging materials as in the prior direct packing type of containers for chemical preparations in only one step of packaging process.
Another object of the present invention consists in providing a packaging bag wherein the dislocation of inner bags in the outer bag is prevented and the outer bag can sufficiently function as a protective bag.
A further object of the invention consists in providing a packaging film for forming the above-described packaging bag.
The packaging container for chemical preparations according to the present invention is a container formed by sealing multi-layer films each constituted of a water-soluble polymer film and at least one layer of water-insoluble film, wherein the inner layer of the container is constituted of a water-soluble polymer film, the outer layer of the container is constitu¬ ted of a water-insoluble film, and at least in the seal part, water-soluble polymer films of the inner layer are bonded to each other, a water-soluble polymer film of the inner layer and a water-insoluble film of the outer layer are bonded to each other, and the watersolub- le polymer films and water-insoluble films are readily releasable from one another.
According to the invention, the multi-layer film for forming a packaging container for che¬ mical preparations may be a product prepared by simply superposing a water-soluble poly¬ mer film and a water-insoluble film. A bag-form container is made therefrom by sealing the films so that the water-soluble polymer film constructs the inside layer of the contai¬ ner.
When the water-soluble polymer films constituting an inner layer of container are heat- sealable with each other and the water-soluble polymer film of inner layer and the water- insoluble film of outer layer are heat-sealable with each other, the multi-layer film can be formed into a bag by the method of heat-sealing. However, the heat seal part formed bet- ween the water-soluble polymer film of inner layer and the water-insoluble film of outer layer must be readily releasable from each other. Accordingly, combination of the water- soluble polymer film and the water-insoluble film must be so selected that the two films are heat-sealable with each other and the heat seal part is readily releasable. Examples of such combination include partially saponified polyvinyl alcohol film as a water-soluble polymer film combined with completely saponified polyvinyl alcohol film or ethylene-vi- nyl acetate copolymer film as a water-insoluble film.
When the water-soluble polymer films are not heat-sealable with each other or when, al¬ though the water-soluble polymer film and the water-insoluble film are heat-sealable with each other, the heat seal strength is too high to make the two films readily releasable from each other, the multi-layer film may be formed into a bag by bonding it with a readily re¬ leasable adhesive.
A packaging container for chemical preparations according to the present invention can al¬ so be produced by forming, by means of heat sealing or by the use of a readily releasable adhesive, a laminated film wherein a water-soluble polymer film and a water-insoluble film are partially or wholly bonded together previously be thy method of welding or by the use of a readily releasable adhesive and said water-soluble polymer film and said water-in¬ soluble film are readily releasable from each other. The partial bonding of the water-so¬ luble polymer film and water-insoluble film may be practiced spot- wise, stripe-wise or lat¬ tice-wise, or in a shape necessary for formation of intended bag, namely usually quadrila¬ teral-wise.
The water-soluble polymer films used in the invention may be any films, so far as they are soluble in water and have a necessary strength. Examples of the polymer usable for for¬ ming a water-soluble polymer film of the invention include water-soluble synthetic poly¬ mers, water-soluble semisynthetic polymers and water-soluble natural polymers. As the water-soluble synthetic polymer, mention may be made of partially saponified polyvinyl alcohol, polyethers such as polyethylene oxide and the like, polyvinylpyrrolidone, ethyle- nically unsaturated acids such as acrylic acid, methacrylic acid, maleic acid and the like, and polymers formed from their salts.
As the water-soluble semisynthetic polymer, mention may be made of cellulose derivati¬ ves such as carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose and the like; and starch derivatives such as cyclodextrin and the like. As the water-soluble na- tural polymer, mention may be made of carrageena, starch, gelatin, chitin and the like. Among these polymers, partially saponified polyvinyl alcohol is particularly preferable.
As the water-insoluble film, thermoplastic resin films, laminated films prepared from two or more kinds of thermoplastic resin films, and laminated films prepared from a thermo¬ plastic resin film and paper, metallic foil, woven fabric or unwoven fabric can be used. Preferable thermoplastic resins include polymers and copolymers of olefins such as ethy- lene, propylene, butene, pentene, hexene and the like; polymers and copolymers of vinyl compounds such as vinyl chloride, vinylidene chloride, vinylacetate, vinyl alcohol, acrylic ester, methacrylic ester, acrylonitrile, styrene and the like; polymers of diolefins such as butadiene, isoprene and the like; copolymers of the above-mentioned diolefins and the above mentioned olefins or vinyl compounds; polyamides; and polyesters such as poly¬ ethylene terephthalate and the like.
Particularly preferable thermoplastic resin films are completely saponified polyvinyl alco¬ hol film, ethylene-vinyl acetate copolymer film, ethylene-vinyl alcohol copolymer film and the like.
Preferable water-insoluble films include laminated films prepared from multiple members of the above-mentioned thermoplastic resin films such as a laminated film prepared from an ethylene-vinyl acetate copolymer film and a polyethylene film or a nylon film, and thermoplastic resin films having a metallic foil layer or a vapor-deposited metal layer such as ethylene-vinyl acetate copolymer film having a vapor deposited aluminum layer or po¬ lyethylene terephthalate film having a vapor deposited aluminum layer. Laminated films formed from one of the above-mentioned thermoplastic resin films and paper, woven fa¬ bric or unwoven fabric are also usable in the invention.
As the readily releasable adhesive, a variety of products are commercially available, and these adhesives may be used appropriately. Apart from the commercial products, an adhe¬ sive prepared by blending ethylene-vinyl acetate copolymer or polystyrene as a base with styrene-butadiene block copolymer or the like, a hot melt adhesive prepared by blending ethylene-vinyl acetate copolymer and a wax as main ingredients with a caking material such as styrene polymer (for example, polyvinyltoluene), terpene polymer, rosin or the li¬ ke, etc. can be used.
The chemical preparations to be packaged into the container of the present invention in- elude those for agricultural and horticultural uses, those for livestock raising uses and tho¬ se for domestic uses such as insecticide, bactericide, fungicide, herbicide, rodenticide, plant growth regulator, repellent, attractant, spreader and the like, as well as fertilizers, de¬ tergents, dyes, and other general chemical preparations.
In the foil wing figures:
1 is packaging container for chemical preparations,
2 is water-insoluble film,
3 is water-soluble polymer film,
4 is seal layer,
5 is multi-layer film,
6 is former,
7 is filling machine,
8 is longitudinal heat sealer,
9 is lateral heat seale, and
10 is heat seal part.
Fig. 1 is a perspective view illustrating one embodiment of the packaging container for chemical preparations of the present invention. Fig. 1 shows a container 1 of two superpo¬ sed sheets of multi-layer films, each constituted of a water-soluble film 3 and a water-in¬ soluble film 2, so that the water-soluble film layer 3 is inside, the films showing a heat- sealing of three sides of the superposed matter while leaving one side open (which may be sealed after filling).
A container similar to that of figure 1 may be produced by folding one sheet of the multi¬ layer film so that the water-soluble film comes inside, followed by sealing two sides of the folded multi-layer film while leaving the residual one side open. After introducing a che¬ mical preparation from the open side, the open side is sealed.
Fig. 2 is a schematic view illustrating one embodiment of the work for introducing and packaging a chemical preparation into the packaging container of the present invention. Fig. 2 illustrates an example of a device for packaging a chemical preparation while for¬ ming a container. Thus, while unrolling a rolled multi-layer film 5 along the former 6 and folding it so that the water-soluble film layer comes inside, a prescribed quantity of chemi¬ cal preparation is introduced into the folded matter by means of a filling machine 7, and thereafter the longitudinal side of the folded film is heat-sealed with heat sealer 8, and fi- nally a lateral line of the folded film is heat-sealed with a lateral heat-sealer 9. The mark 10 denotes a heat seal part.
In putting a chemical preparation packaged in the container of the invention to practical use, the water-insoluble film constituting the outer layer is peeled off, and the preparation packaged dividingly in the water-soluble film units are thrown into water together with the water-soluble film and then put to use.
Another object of the invention is the use of the container according to the invention for package of hazardous chemicals, especially pesticides. The container is especially suitable for this use, since a person is neither contacted during filling nor preperation of a spraying composition; and the environment contamination is avoided, since no contaminated resi¬ dues remain.
The following examples explain the invention in more detail. PVA means polyvinyl alco¬ hol. PET means polyethylene terephthalate.
Example 1:
A three sides-sealed laminate bag is prepared by using Solbron KC-35 (partially saponi¬ fied PVA resin film, manufactured by AICELO Co.) as a water-soluble film and Hicelon NP-40 (completely saponified PVA resin manufactured by AICELO Co.) as an outer pro¬ tective water-insoluble film by the method of heat sealing without intermediation of adhe¬ sive. The bag thus obtained was left to stand in a thermostatted chamber kept at 40°C for one month to test its storage stability. As the result, both adhesive property and releasabili- ty are good between the water-soluble film and the outer protective film.
Example 2:
A four sides-sealed laminate bag is prepared by using Solbron KC-35 (partially saponified PVA resin film, manufactured by AICELO Co.) as a water-soluble film and Eval HS (ethylene-vinyl alcohol copolymer resin, manufactured by KURARAY Co.) as an outer protective water-insoluble film by the method of heat sealing without intermediation of adhesive. The bag thus obtained was left to stand in a thermostatted chamber kept at 40°C for one month to test storage stability. As the result, both adhesive property and releasabi- lity are good between the water-soluble film and the outer protective film.
Example 3: A four sides-sealed laminate bag is prepared by using Solbron KC-35 (partially saponified PVA resin film, manufactured by AICELO Co.) as a water-soluble film and Eval HS/NY (laminate formed from ethylene-vinyl alcohol copolymer resin film and nylon film, manu¬ factured by KURARAY Co.) as an outer protective water-insoluble film by the method of heat sealing without intermediation of adhesive. The bag thus obtained is left to stand in a thermostatted chamber kept at 40°C for one month to test storage stability. As the result, both adhesive property and releasability are good between the water-soluble film and the outer protective film.
Example 4:
A four sides-sealed laminate bag is prepared by using Solbron KC-35 (partially saponified PVA resin film, manufactured by AICELO Co.) as a water-soluble film and Eval VMXL (ethylene-vinyl alcohol copolymer resin film with a vapor-deposited aluminum layer, ma¬ nufactured by KURARAY Co.) as an outer protective water-insoluble film by the method of heat sealing without intermediation of adhesive. The bag thus obtained is left to stand in a thermostatted chamber kept at 40°C for one month to test storage stability. As the result, both adhesive property and releasability are good between the water-soluble film and the outer protective film.
Example 5:
A four sides-sealed laminate bag is prepared by using Solbron KA-50 (partially saponified PVA resin film, manufactured by AICELO Co.) as a water-soluble film and a polyethyle¬ ne terephthalate laminate (aluminum vapor deposited PET/dry laminate PET) as an outer protective water-insoluble film through intermediation of a releasable adhesive. The bag thus obtained is left to stand in a thermostatted chamber kept at 40°C for one month to test storage stability. As the result, both adhesive property and releasability are good between the water-soluble film and the outer protective film.
Example 6:
A four sides-sealed laminate bag is prepared by using Soafil PSF 100 (natural carrageena film, manufactured by Mitsubishi Rayon Co.) as a water-soluble film and Hicelon NP-40 (completely saponified PVA resin, manufactured by AICELO Co.) as an outer protective water-insoluble film by the method of heat sealing without intermediation of adhesive. The bag thus obtained is left to stand in a thermostatted chamber kept at 40°C for one month to test storage stability. As the result, both adhesive property and releasability are good between the water-soluble film and the outer protective film. Example 7:
A four sides-sealed laminate bag is prepared by using Soafil PSF 100 (natural carrageena film, manufactured by Mitsubishi Rayon Co.) as a water-soluble film and Eval HS (ethyle¬ ne-vinyl alcohol copolymer resin film, manufactured by KURARAY Co.) as an outer pro¬ tective water-insoluble film by the method of heat sealing without intermediation of adhe¬ sive. The bag thus obtained is left to stand in a thermostatted chamber kept at 40°C for one month to test storage stability. As the result, both adhesive property and releasability are good between the water-soluble film and the outer protective film.
According to the prior technique of double packaging, a water-soluble film is used as an inner bag and one or more inner bags are introduced and packaged in an outer bag, and such a process has necessitated two steps of procedure, namely a step for introducing a chemical preparation into inner bags and a step for inserting the inner bags containing the chemical preparation into an outer bag. In the packaging container for chemical prepara¬ tions according to the present invention, contrariwise, the work for packaging a chemical preparation into container is simplified to only one step.
In the prior double package, the inner bags are liberated from the outer bag, so that the in¬ ner bags can be broken by the shock which may be applied at the time of transportation, which means that the outer bag, cannot function as a protective bag sufficiently. In the packaging container of the present invention, contrariwise, the inner bag made of a water- soluble film is bonded to the water-insoluble outer bag at least in the seal part, so that the inner bag is protected against dislocation at the time of transportation and therefore against the breakage brought about by shocks.
Further, since the water-soluble inner bag and the water-insoluble outer bag are readily re¬ leasable from each other, the outer protective bag can easily be removed at the time of put¬ ting the preparation to use. Since the chemical preparation dividingly packaged in the wa¬ ter-soluble film can be used without taking it out of the water-soluble bag, the flying loss of chemical preparation can be prevented. Further, since the chemical preparation is brought into no direct contact with the skin, a safety of the worker can be assured.
Further, since no chemical preparation adheres to the protective bag released from inner bags, the outer bag can be disposed with safety as a general waste.

Claims

What is claimed is:
1. A packaging container for chemical preparations formed by sealing multi-layer films each constituted of a water-soluble polymer film and at least one layer of water-insoluble film, wherein inner layer of said container is constituted of a water-soluble polymer film and outer layer of said container is constituted of water-insoluble films, and at least in the seal part of the container, a water-soluble polymer film constituting the inner layer and another water-soluble polymer film constituting the inner layer are bonded to each other, a water-soluble polymer film constituting the inner layer and a water-insoluble film consti¬ tuting the outer layer are bonded to each other, and the water-soluble polymer film and the water-insoluble film are readily releasable from each other.
2. A packaging container for chemical preparations according to Claim 1, wherein a wa¬ ter-soluble polymer film constituting the inner layer and a water-insoluble film constitu¬ ting the outer layer are bonded to each other only in the seal part.
3. A packaging container for chemical preparations according to Claim 1, wherein a wa¬ ter-soluble polymer film constituting the inner layer and a water-insoluble film constitu¬ ting the outer layer are bonded to each other in the seal part and partially bonded to each other in the other parts.
4. A packaging container for chemical preparations according to Claim 1, wherein a wa¬ ter-soluble polymer film constituting the inner layer and a water-insoluble film constitu¬ ting the outer layer are wholly bonded to each other.
5. A packaging container for chemical preparations according to Claims 1 to 4, wherein in the seal part of the container a water-soluble polymer film constituting the inner layer are bonded to each other and a water-soluble polymer film constituting the inner layer and a water-insoluble film constituting the outer layer are bonded to each other both by means of heat sealing.
6. A packaging container according to Claim 1 to 4, wherein in the seal part of the contai¬ ner a water-soluble polymer film constituting the inner layer and another water- soluble polymer film constituting the inner layer are bonded to each other and a water- soluble po¬ lymer film constituting the inner layer and a water-insoluble film constituting the outer layer are bonded to each other both by means of a readily releasable adhesive.
7. A packaging container according to Claim 1 to 4, wherein in the seal part of the contai¬ ner a water-soluble polymer film constituting an inner layer and another water-soluble po¬ lymer film constituting the inner layer are bonded to each other by means of heat-sealing and a water-soluble polymer film constituting the inner layer and a water-insoluble film constituting the outer layer are bonded to each other by means of a readily releasable ad¬ hesive.
8. A packaging container for chemical preparations according to Claim 1, wherein said water-soluble polymer film is selected from the group consisting of water-soluble synthe¬ tic polymer film, water-soluble semisynthetic polymer film and water-soluble natural po¬ lymer film.
9. A packaging container for chemical preparations according to Claim 1, wherein said water-insoluble film is selected from the group consisting of thermoplastic resin film, la¬ minated film prepared from two or more kinds of thermoplastic resin films and laminated film prepared from a thermoplastic resin film and paper, metallic foil, woven fabric or un¬ woven fabric.
10. A packaging container for chemical preparations according to Claim 1, wherein the water-soluble polymer film constituting the inner layer is a partially saponified polyvinyl alcohol film, the water-insoluble film constituting the outer layer is a completely saponi¬ fied polyvinyl alcohol film, a film constituting the inner layer another film constituting the inner layer are bonded to each other and a film constituting the inner layer and a film con¬ stituting the outer layer are bonded to each other both only in the seal part by means of heat sealing, and the film constituting the inner layer and the film constituting the outer layer are releasable from each other.
11. A packaging container for chemical preparations according to Claim 10, wherein the completely saponified polyvinyl alcohol copolymer film is laminated with other thermo¬ plastic resin film or metallic film.
12. A packaging container for chemical preparations according to Claim 1, wherein the water-soluble polymer film constituting the inner layer is a partially saponified polyvinyl alcohol film, the water-insoluble film constituting the outer layer is an ethylene-vinyl ace¬ tate copolymer film, a film constituting the inner layer and another film constituting the inner layer are bonded to each other and a film constituting the inner layer and a film con¬ stituting the outer layer are bonded to each other both only in the seal part by means of heat sealing, and the film constituting the inner layer and the film constituting the outer layer are readily releasable from each other.
13. A packaging container for chemical preparations according to Claim 12, wherein said ethylene-vinyl acetate copolymer film is laminated with other thermoplastic resin film or metallic film.
14. A packaging container for chemical preparations according to Claim 1, which is for¬ med from a laminated film wherein a water-soluble polymer film and a water-insoluble film are partially or wholly bonded to each other either by means of heat sealing or by means of a readily releasable adhesive, and the water-soluble polymer film and the water- insoluble film are readily releasable from each other.
15. A packaging container for chemical preparations according to Claim 14, wherein a wa¬ ter-soluble polymer film and a water-insoluble film are bonded to each other spot-wise, stripe-wise or lattice-wise either by means of heat sealing or by means of a readily relea¬ sable adhesive.
16. A packaging container for chemical preparations according to Claim 14, wherein said laminated film is that wherein a partially saponified polyvinyl alcohol film and a poly¬ ethylene terephthalate film with a vapor-deposited aluminum layer are partially bonded to each other by means of a readily releasable adhesive.
17. The use of a container according to claim 1 for the package of hazardous chemicals.
18. The use according to claim 17, wherein the hazardous chemical is a pesticide.
PCT/IB1994/000148 1993-06-15 1994-06-08 Packaging material comprising a water-soluble film WO1994029104A1 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
KR1019950705549A KR100315141B1 (en) 1993-06-15 1994-06-08 Packing material containing water soluble membrane
RU96101147A RU2129081C1 (en) 1993-06-15 1994-06-08 Package for chemicals
EP94915687A EP0707537B2 (en) 1993-06-15 1994-06-08 Packaging material comprising a water-soluble film
US08/766,323 US5827586A (en) 1993-06-15 1994-06-08 Packaging material comprising a water-soluble film
DE69413978T DE69413978T3 (en) 1993-06-15 1994-06-08 PACKING MATERIAL WITH WATER RELEASE LICK FILM
CA002163655A CA2163655C (en) 1993-06-15 1994-06-08 Packaging material comprising a water-soluble film
BR9406825A BR9406825A (en) 1993-06-15 1994-06-08 Packaging material comprising a water-soluble film
AU67608/94A AU681149B2 (en) 1993-06-15 1994-06-08 Packaging material comprising a water-soluble film
PL94311738A PL311738A1 (en) 1993-06-15 1994-06-08 Packaging material incorporating water-soluble foil
SK1561-95A SK156195A3 (en) 1993-06-15 1994-06-08 Packing material comprising a water-soluble film
FI955963A FI955963A (en) 1993-06-15 1995-12-13 Packaging material containing a water - soluble film
NO955069A NO955069L (en) 1993-06-15 1995-12-14 Packing material comprising a water-soluble film

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5168441A JPH072272A (en) 1993-06-15 1993-06-15 Medicine packaging material using water-soluble film and its packaging container
JP5/168441 1993-06-15

Publications (1)

Publication Number Publication Date
WO1994029104A1 true WO1994029104A1 (en) 1994-12-22

Family

ID=15868180

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1994/000148 WO1994029104A1 (en) 1993-06-15 1994-06-08 Packaging material comprising a water-soluble film

Country Status (21)

Country Link
US (1) US5827586A (en)
EP (1) EP0707537B2 (en)
JP (1) JPH072272A (en)
KR (1) KR100315141B1 (en)
CN (1) CN1047984C (en)
AT (1) ATE172150T1 (en)
AU (1) AU681149B2 (en)
BR (1) BR9406825A (en)
CA (1) CA2163655C (en)
CZ (1) CZ329395A3 (en)
DE (1) DE69413978T3 (en)
ES (1) ES2122279T5 (en)
FI (1) FI955963A (en)
HU (1) HUT73294A (en)
NO (1) NO955069L (en)
NZ (1) NZ266213A (en)
PL (1) PL311738A1 (en)
RU (1) RU2129081C1 (en)
SG (1) SG80515A1 (en)
SK (1) SK156195A3 (en)
WO (1) WO1994029104A1 (en)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996015903A1 (en) * 1994-11-21 1996-05-30 W.R. Grace & Co.-Conn. Peelable laminate
EP0769369A2 (en) * 1995-10-09 1997-04-23 Kyodo Shiko Co., Ltd. Laminated film, method for production thereof, bag and package using the laminated film, and method for separation thereof
WO1997037903A1 (en) * 1996-04-08 1997-10-16 Novartis Ag Water soluble bag packaging system and method for packaging
EP0867276A2 (en) * 1997-03-26 1998-09-30 Kyodo Shiko Co., Ltd. Laminated film, method for production thereof, and bag and package using the laminated film
US5981028A (en) * 1996-03-22 1999-11-09 Asahi Chemical Polyflex Co., Ltd. Film for multiple bag
WO2002000430A2 (en) * 2000-06-28 2002-01-03 Exxonmobil Oil Corporation Multi-layer film with high gauge evoh heat seal layer
AT408631B (en) * 1999-09-22 2002-01-25 Teich Ag AROMADICHT RESealable PACKAGING FOR DRY PACKAGING GOODS
WO2002058910A1 (en) * 2001-01-26 2002-08-01 Reckitt Benckiser (Uk) Limited Process for preparing a laminated, thermoformed film
US6440508B1 (en) 1997-11-13 2002-08-27 Kyodo Shiko Co. Laminated film, method for production thereof, bag and package using the laminated film, and method for separation thereof
GB2374580A (en) * 2001-04-20 2002-10-23 Reckitt Benckiser Water-soluble containers
WO2002092439A2 (en) * 2001-05-14 2002-11-21 Aquasol Limited Thermoformed water-soluble package enclosed within an external thermoformed water-insoluble holder and a method for making the package
AU2003244043B1 (en) * 2003-07-24 2004-02-12 Manildra Starches Pty. Limited Improvements in packaging of chemicals
WO2004020288A1 (en) * 2002-08-30 2004-03-11 Packaging Imolese S.P.A. Process for manufacturing water-soluble containers by thermoforming
US6846784B2 (en) 2003-01-30 2005-01-25 Access Business Group International Llc Water soluble pouch package
WO2008068779A2 (en) * 2006-12-07 2008-06-12 Shilpan Pravinchandra Patel Water soluble film based package, process and apparatus for sealing said package
US8551588B2 (en) 2009-03-31 2013-10-08 Avery Dennison Corporation Resealable laminate for heat sealed packaging
FR3012119A1 (en) * 2013-10-18 2015-04-24 Bioindustries Solutions NEW BAG SYSTEM CONTAINING ACTIVE MATERIALS FOR THE TREATMENT OF PLANTS
US9550616B2 (en) 2010-05-25 2017-01-24 Avery Dennison Corporation Tamper evident container
US9820448B2 (en) 2011-04-20 2017-11-21 Plastika Kritis S.A. Multilayer plastic film with separable layers for covering of inflated greenhouse
US9873558B2 (en) 2015-02-26 2018-01-23 Monosol, Llc Multi-dose cleaning product and method of manufacture
US10041025B2 (en) 2008-06-20 2018-08-07 Edwards Innovations Limited Multi-chambered fluid-fillable apparatus
US10710773B2 (en) 2009-09-11 2020-07-14 Avery Dennison Corporation Resealable laminate for heat sealed packaging
WO2021144622A1 (en) * 2020-01-17 2021-07-22 Peartree Chemicals Ltd A method of manufacturing a sachet
US11352172B2 (en) 2009-09-11 2022-06-07 Avery Dennison Corporation Resealable laminate for heat sealed packaging

Families Citing this family (65)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69509075T2 (en) * 1994-02-24 1999-10-14 Novartis Ag METHOD FOR PRODUCING A CONTAINER FOR CHEMICALS
JPH08205855A (en) * 1995-01-31 1996-08-13 Toppan Printing Co Ltd Medium
GB9623562D0 (en) * 1996-11-13 1997-01-08 Zeneca Ltd Sachet-packaged compositions
US5983734A (en) * 1997-07-21 1999-11-16 Medica Corporation Modular automated diagnostic analysis apparatus with a self cleaning sample input port, an improved fluid selection port, and an improved reagent pack
US6886421B2 (en) 1997-07-21 2005-05-03 Vijay Mathur Modular film sensors with record memory for modular automated diagnostic apparatus
US6308827B1 (en) 1999-02-10 2001-10-30 Technicor Inc. Labeling system for vial container
US5984087A (en) * 1999-02-10 1999-11-16 Technicor, Inc. Vial container
US6509072B2 (en) * 1999-04-27 2003-01-21 P. Scott Bening Multi-layer film with periodic barrier coating and methods of making and using such film
US6506273B1 (en) * 1999-08-21 2003-01-14 Jack L. Hull Tire sealant system
US6607226B1 (en) * 1999-11-17 2003-08-19 Mark Poncy Toilet-disposable bag for aqueous disposal
US6631801B2 (en) 2000-02-09 2003-10-14 Inspiral, Llc Transport package
US6446794B1 (en) 2000-02-25 2002-09-10 Technicor Inc. Absorbent/adsorbent containers
US6698285B1 (en) 2000-02-25 2004-03-02 Technicor, Inc. Measurement device for absorbent/adsorbent objects
US6523681B1 (en) 2000-02-25 2003-02-25 Technicor, Inc. Absorbent/adsorbent pads
US20020142931A1 (en) * 2000-07-19 2002-10-03 The Procter & Gamble Company Gel form automatic dishwashing compositions, methods of preparation and use thereof
KR20020017142A (en) * 2000-08-29 2002-03-07 성재갑 Refill bag having high gloss and manufacturing method thereof
US8658585B2 (en) 2000-11-27 2014-02-25 Tanguy Marie Louise Alexandre Catlin Detergent products, methods and manufacture
US8940676B2 (en) 2000-11-27 2015-01-27 The Procter & Gamble Company Detergent products, methods and manufacture
DE60123463T2 (en) 2000-11-27 2007-08-02 The Procter & Gamble Company, Cincinnati dishwashing
JP4965057B2 (en) 2000-11-27 2012-07-04 ザ プロクター アンド ギャンブル カンパニー Dishwashing method
US7125828B2 (en) 2000-11-27 2006-10-24 The Procter & Gamble Company Detergent products, methods and manufacture
JP2002234548A (en) * 2001-02-09 2002-08-20 Sekisui Chem Co Ltd Packaging bag
GB2375515B (en) * 2001-05-17 2003-11-19 Reckitt Benckiser Water-soluble containers
AU2002367610A1 (en) * 2002-02-04 2003-09-02 Manchiu Li Vacuum storage bag
US20040131805A1 (en) * 2002-06-20 2004-07-08 Merical Rick L. Films having a desiccant material incorporated therein and methods of use and manufacture
EP1563523A4 (en) 2002-09-03 2006-05-24 Bloomberg Lp Bezel-less electronic display
US20050226964A1 (en) * 2004-04-07 2005-10-13 Michael Small Water soluble seal and cap
US8178177B2 (en) * 2005-02-11 2012-05-15 3M Innovative Properties Company Duct wrap and method for fire protecting a duct
US8153061B2 (en) * 2005-11-23 2012-04-10 Siemens Healthcare Diagnostics Inc. Storage and supply system for clinical solutions used in an automatic analyzer
US20070167327A1 (en) * 2006-01-17 2007-07-19 Savich Milan H Biodegradable bag containing superabsorbent polymers
CN101688066A (en) * 2006-04-06 2010-03-31 阿克佐诺贝尔涂料公司 The encapsulated colorant, system, test kit and the method that are used for water-based paint compositions
KR20090113333A (en) * 2007-02-19 2009-10-29 신젠타 파티서페이션즈 아게 Multi-layer receptacle and residue removal method therefor
US7874731B2 (en) 2007-06-15 2011-01-25 S.C. Johnson Home Storage, Inc. Valve for a recloseable container
US7967509B2 (en) 2007-06-15 2011-06-28 S.C. Johnson & Son, Inc. Pouch with a valve
US20090226116A1 (en) * 2008-03-06 2009-09-10 Cmc Daymark Corporation Dissolvable pouch
GB0806271D0 (en) * 2008-04-07 2008-05-14 Chemlink Specialities Ltd pakaging and method of manufacturing thereof
DE102009043826B4 (en) * 2009-08-21 2013-05-16 Profitox Gmbh Lockmittelpad
EP2588653B1 (en) 2010-07-02 2018-06-20 The Procter and Gamble Company Method of treating a fabric article
RU2555042C2 (en) 2010-07-02 2015-07-10 Дзе Проктер Энд Гэмбл Компани Method of active substance delivery
RU2553294C2 (en) 2010-07-02 2015-06-10 Дзе Проктер Энд Гэмбл Компани Material in form of fabric and method of its manufacturing
HUE030120T2 (en) 2010-07-02 2017-04-28 Procter & Gamble Process for making films from nonwoven webs
DE202011051309U1 (en) * 2011-09-15 2012-12-17 Cofresco Frischhalteprodukte Gmbh & Co. Kg Bags for the storage and preparation of food
CN103508075A (en) * 2012-06-28 2014-01-15 浙江新安化工集团股份有限公司 Environment-friendly method for packaging and using paraquat preparation
CN105151490B (en) * 2015-07-30 2017-11-03 浙江金石包装有限公司 The bag-making method for the polybag that monolayer polyethylene film is made
US10370829B2 (en) * 2015-11-05 2019-08-06 Timothy Al Andrzejak Articles comprising a surface spreading agent, oilfield water storage systems employing the same, and methods of managing the oilfield water storage systems
CN105383134B (en) * 2015-12-30 2017-10-20 桑春龙 Returnable package thing for ultraviolet curable ink
CN108602598A (en) * 2016-07-06 2018-09-28 雀巢产品技术援助有限公司 Recyclable flexible pouch and its production and application method
JP2020501997A (en) * 2016-12-19 2020-01-23 ユーピーエル リミテッドＵｐｌ Ｌｉｍｉｔｅｄ Moisture barrier package
CN108657592A (en) * 2017-04-01 2018-10-16 南京光谷数据处理有限公司 Environmental protection for ultraviolet (UV) curable ink is recycled and packaged object
JP7162010B2 (en) 2017-05-19 2022-10-27 ダウ グローバル テクノロジーズ エルエルシー Aqueous Membrane Sealing Compositions and Methods of Using the Compositions or Membranes
CN107722372A (en) * 2017-10-18 2018-02-23 湖州新驰医药科技有限公司 It is a kind of can self-dissolving inner bag powder of edible fungus production method
CN111492047A (en) 2018-01-26 2020-08-04 宝洁公司 Water-soluble articles and related methods
CN111556891B (en) 2018-01-26 2021-11-05 宝洁公司 Water-soluble unit dose articles comprising enzymes
WO2019147534A1 (en) 2018-01-26 2019-08-01 The Procter & Gamble Company Water-soluble unit dose articles comprising perfume
WO2019147532A1 (en) 2018-01-26 2019-08-01 The Procter & Gamble Company Water-soluble unit dose articles comprising perfume
CN108357772A (en) * 2018-02-08 2018-08-03 北京中科乾和环保科技服务有限公司 A kind of charcoal water-solubility membrane packaging
WO2019168829A1 (en) 2018-02-27 2019-09-06 The Procter & Gamble Company A consumer product comprising a flat package containing unit dose articles
US10982176B2 (en) 2018-07-27 2021-04-20 The Procter & Gamble Company Process of laundering fabrics using a water-soluble unit dose article
JP7347898B2 (en) * 2018-09-27 2023-09-20 北興化学工業株式会社 Packaging bags for agricultural chemicals and packaging methods for agricultural chemicals
WO2020159860A1 (en) 2019-01-28 2020-08-06 The Procter & Gamble Company Recycleable, renewable, or biodegradable package
EP3712237A1 (en) 2019-03-19 2020-09-23 The Procter & Gamble Company Fibrous water-soluble unit dose articles comprising water-soluble fibrous structures
CN110065196A (en) * 2019-04-18 2019-07-30 美国投资公司 Orthohormbic structure part and its manufacture craft in a kind of multi-core fibrous composite
CA3134222C (en) 2019-06-28 2024-01-16 The Procter & Gamble Company Dissolvable solid fibrous articles containing anionic surfactants
US11925698B2 (en) 2020-07-31 2024-03-12 The Procter & Gamble Company Water-soluble fibrous pouch containing prills for hair care
CN112547033A (en) * 2020-11-18 2021-03-26 江西尚绿科技有限公司 Method for improving activity of activated carbon

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB922317A (en) * 1958-05-05 1963-03-27 Associated Fumigators Ltd Improvements in or relating to means for packaging pesticides
FR1600060A (en) * 1968-12-30 1970-07-20
EP0011502A1 (en) * 1978-11-17 1980-05-28 Unilever Plc Particulate detergent composition contained within a closed bag of sheet material
GB2193925A (en) * 1986-08-18 1988-02-24 Enak Ltd improvements relating to WC-disposable sheet material
JPH0457989A (en) * 1990-06-22 1992-02-25 Lion Corp Sheet and packaging material disintegrating in water
EP0520280A1 (en) * 1991-06-22 1992-12-30 Hoechst Aktiengesellschaft Laminated material with latent inherent delamination potential
JPH05140350A (en) * 1991-11-21 1993-06-08 Dai Ichi Kogyo Seiyaku Co Ltd Composite film and its production
EP0608801A1 (en) * 1993-01-25 1994-08-03 Aicello Chemical Company Limited Composite film bags for packaging

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1054808A (en) † 1900-01-01
NL8500076A (en) † 1985-01-14 1986-08-01 Leer Koninklijke Emballage PACKAGING FILLED WITH A WATER-SOLUBLE TOXIC POWDER OR GRAIN PRODUCT.
EP0221651A1 (en) † 1985-09-27 1987-05-13 Kao Corporation Water soluble polyvinyl alcohol derivative
GB8612706D0 (en) † 1986-05-23 1986-07-02 Unilever Plc Sealable container
IE64670B1 (en) † 1990-05-02 1995-08-23 Rhone Poulenc Agriculture Soluble sachets
US5080226A (en) † 1990-07-18 1992-01-14 Rhone-Poulenc Ag Company Containerization system for agrochemicals and the like
US5222595A (en) * 1990-07-18 1993-06-29 Rhone-Poulenc Ag Company Bag in a bag for containerization of toxic or hazardous material
TR27730A (en) * 1991-04-05 1995-06-28 Rhone Poulenc Agrochimie Packaging for agrochemical materials.
AU655282B2 (en) † 1991-06-14 1994-12-15 Rhone-Poulenc Agro New aqueous formulations
NZ244818A (en) * 1991-10-24 1994-09-27 Rhone Poulenc Agrochimie Package containing a toxic composition which comprises two compartments formed by two sheets of water-soluble dispersible material by means of a water-soluble/dispersible heat seal and a third sheet

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB922317A (en) * 1958-05-05 1963-03-27 Associated Fumigators Ltd Improvements in or relating to means for packaging pesticides
FR1600060A (en) * 1968-12-30 1970-07-20
EP0011502A1 (en) * 1978-11-17 1980-05-28 Unilever Plc Particulate detergent composition contained within a closed bag of sheet material
GB2193925A (en) * 1986-08-18 1988-02-24 Enak Ltd improvements relating to WC-disposable sheet material
JPH0457989A (en) * 1990-06-22 1992-02-25 Lion Corp Sheet and packaging material disintegrating in water
EP0520280A1 (en) * 1991-06-22 1992-12-30 Hoechst Aktiengesellschaft Laminated material with latent inherent delamination potential
JPH05140350A (en) * 1991-11-21 1993-06-08 Dai Ichi Kogyo Seiyaku Co Ltd Composite film and its production
EP0608801A1 (en) * 1993-01-25 1994-08-03 Aicello Chemical Company Limited Composite film bags for packaging

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 9214, Derwent World Patents Index; AN 92-111567 *
DATABASE WPI Week 9327, Derwent World Patents Index; AN 93-216933 *

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996015903A1 (en) * 1994-11-21 1996-05-30 W.R. Grace & Co.-Conn. Peelable laminate
US6244746B1 (en) 1995-10-09 2001-06-12 Kyodo Shiko Co. Laminated film, method for production thereof, bag and package using the laminated film, and method for separation thereof
EP0769369A3 (en) * 1995-10-09 1998-12-23 Kyodo Shiko Co., Ltd. Laminated film, method for production thereof, bag and package using the laminated film, and method for separation thereof
EP0769369A2 (en) * 1995-10-09 1997-04-23 Kyodo Shiko Co., Ltd. Laminated film, method for production thereof, bag and package using the laminated film, and method for separation thereof
US6984067B2 (en) 1995-10-09 2006-01-10 Kyodo Shiko Co., Ltd. Laminated film, method for production thereof, bag and package using the laminated film, and method for separation thereof
US5981028A (en) * 1996-03-22 1999-11-09 Asahi Chemical Polyflex Co., Ltd. Film for multiple bag
WO1997037903A1 (en) * 1996-04-08 1997-10-16 Novartis Ag Water soluble bag packaging system and method for packaging
EP0867276A2 (en) * 1997-03-26 1998-09-30 Kyodo Shiko Co., Ltd. Laminated film, method for production thereof, and bag and package using the laminated film
US6040024A (en) * 1997-03-26 2000-03-21 Kyodo Shiko Co., Ltd. Laminated film, method for production thereof, and bag and package using the laminated film
EP0867276A3 (en) * 1997-03-26 1998-12-23 Kyodo Shiko Co., Ltd. Laminated film, method for production thereof, and bag and package using the laminated film
US6440508B1 (en) 1997-11-13 2002-08-27 Kyodo Shiko Co. Laminated film, method for production thereof, bag and package using the laminated film, and method for separation thereof
US6471401B1 (en) 1997-11-13 2002-10-29 Kyodo Shiko Co., Ltd. Laminated film, method for production thereof, bag and package using the laminated film, and method for separation thereof
AT408631B (en) * 1999-09-22 2002-01-25 Teich Ag AROMADICHT RESealable PACKAGING FOR DRY PACKAGING GOODS
WO2002000430A2 (en) * 2000-06-28 2002-01-03 Exxonmobil Oil Corporation Multi-layer film with high gauge evoh heat seal layer
WO2002000430A3 (en) * 2000-06-28 2002-04-11 Exxonmobil Oil Corp Multi-layer film with high gauge evoh heat seal layer
US7219484B2 (en) 2001-01-26 2007-05-22 Reckitt Benckiser (Uk) Limited Process for preparing a laminated, thermoformed film
WO2002058910A1 (en) * 2001-01-26 2002-08-01 Reckitt Benckiser (Uk) Limited Process for preparing a laminated, thermoformed film
GB2374580B (en) * 2001-04-20 2003-07-16 Reckitt Benckiser Water-soluble containers
GB2374580A (en) * 2001-04-20 2002-10-23 Reckitt Benckiser Water-soluble containers
WO2002092439A3 (en) * 2001-05-14 2003-02-20 Aquasol Ltd Thermoformed water-soluble package enclosed within an external thermoformed water-insoluble holder and a method for making the package
WO2002092439A2 (en) * 2001-05-14 2002-11-21 Aquasol Limited Thermoformed water-soluble package enclosed within an external thermoformed water-insoluble holder and a method for making the package
WO2004020288A1 (en) * 2002-08-30 2004-03-11 Packaging Imolese S.P.A. Process for manufacturing water-soluble containers by thermoforming
US6846784B2 (en) 2003-01-30 2005-01-25 Access Business Group International Llc Water soluble pouch package
AU2003244043B1 (en) * 2003-07-24 2004-02-12 Manildra Starches Pty. Limited Improvements in packaging of chemicals
WO2008068779A2 (en) * 2006-12-07 2008-06-12 Shilpan Pravinchandra Patel Water soluble film based package, process and apparatus for sealing said package
WO2008068779A3 (en) * 2006-12-07 2008-11-27 Shilpan Pravinchandra Patel Water soluble film based package, process and apparatus for sealing said package
US10858620B2 (en) 2008-06-20 2020-12-08 Edwards Innovations Limited Multi-chambered fluid-fillable apparatus
US10041025B2 (en) 2008-06-20 2018-08-07 Edwards Innovations Limited Multi-chambered fluid-fillable apparatus
US8551588B2 (en) 2009-03-31 2013-10-08 Avery Dennison Corporation Resealable laminate for heat sealed packaging
US11352172B2 (en) 2009-09-11 2022-06-07 Avery Dennison Corporation Resealable laminate for heat sealed packaging
US10710773B2 (en) 2009-09-11 2020-07-14 Avery Dennison Corporation Resealable laminate for heat sealed packaging
US9550616B2 (en) 2010-05-25 2017-01-24 Avery Dennison Corporation Tamper evident container
US9820448B2 (en) 2011-04-20 2017-11-21 Plastika Kritis S.A. Multilayer plastic film with separable layers for covering of inflated greenhouse
US11058069B2 (en) 2011-04-20 2021-07-13 Plastika Kritis S.A. Multilayer plastic film with separable layers for covering of inflated greenhouse
WO2015055903A3 (en) * 2013-10-18 2015-07-16 Bioindustries Solutions Novel system of bags containing active materials for the treatment of plants
FR3012119A1 (en) * 2013-10-18 2015-04-24 Bioindustries Solutions NEW BAG SYSTEM CONTAINING ACTIVE MATERIALS FOR THE TREATMENT OF PLANTS
US10611555B2 (en) 2015-02-26 2020-04-07 Monosol, Llc Multi-dose cleaning product and method of manufacture
US9873558B2 (en) 2015-02-26 2018-01-23 Monosol, Llc Multi-dose cleaning product and method of manufacture
WO2021144622A1 (en) * 2020-01-17 2021-07-22 Peartree Chemicals Ltd A method of manufacturing a sachet

Also Published As

Publication number Publication date
CN1047984C (en) 2000-01-05
CZ329395A3 (en) 1996-03-13
FI955963A0 (en) 1995-12-13
US5827586A (en) 1998-10-27
NZ266213A (en) 1997-04-24
CN1125417A (en) 1996-06-26
DE69413978D1 (en) 1998-11-19
AU681149B2 (en) 1997-08-21
RU2129081C1 (en) 1999-04-20
NO955069D0 (en) 1995-12-14
CA2163655A1 (en) 1994-12-22
ES2122279T3 (en) 1998-12-16
CA2163655C (en) 2004-12-28
HU9503575D0 (en) 1996-02-28
EP0707537A1 (en) 1996-04-24
JPH072272A (en) 1995-01-06
DE69413978T2 (en) 1999-04-08
ES2122279T5 (en) 2004-03-01
SK156195A3 (en) 1996-04-03
KR100315141B1 (en) 2002-07-06
PL311738A1 (en) 1996-03-18
EP0707537B1 (en) 1998-10-14
ATE172150T1 (en) 1998-10-15
EP0707537B2 (en) 2003-05-14
AU6760894A (en) 1995-01-03
KR960702791A (en) 1996-05-23
HUT73294A (en) 1996-07-29
DE69413978T3 (en) 2004-01-29
NO955069L (en) 1995-12-14
BR9406825A (en) 1996-03-26
SG80515A1 (en) 2001-05-22
FI955963A (en) 1995-12-13

Similar Documents

Publication Publication Date Title
CA2163655C (en) Packaging material comprising a water-soluble film
EP0132369B1 (en) Flexible package with easy opening peel seal
US6509072B2 (en) Multi-layer film with periodic barrier coating and methods of making and using such film
US5830547A (en) Peel-open package
CA2728823C (en) Evoh barrier film with reduced autoclave shock
US5024044A (en) Process for producing an easily opened package
US4859514A (en) Laminate for an easily opened package
HU219180B (en) Water soluble or water dispersible packing for agricultural chemical compositions and process for producing thereof
EP0892744B1 (en) Water soluble bag packaging system and method for packaging
CN110214113A (en) Packaging process and modular packaging apparatus for packaging products on a support
WO2018071670A1 (en) Device for controlling headspace humidity and methods for making the same
JP2006123958A (en) Double packaging bag
JP2580980Y2 (en) Outer wrapper with transparent and preservable contents
EP1323642A1 (en) Cushioning packaging method, cushioning package body, and cushioning package bag
KR102449921B1 (en) Multipurpose package and method for manufacturing the same
JPH11321879A (en) Bag body and bagged body
JPH03289456A (en) Film for easy content release bag and sealing bag

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 94192447.5

Country of ref document: CN

AK Designated states

Kind code of ref document: A1

Designated state(s): AU BB BG BR BY CA CN CZ FI GE HU JP KG KP KR KZ LK LV MD MG MN MW NO NZ PL RO RU SD SI SK TJ TT UA US UZ VN

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 1994915687

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 266213

Country of ref document: NZ

WWE Wipo information: entry into national phase

Ref document number: 2163655

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: PV1995-3293

Country of ref document: CZ

Ref document number: 156195

Country of ref document: SK

Ref document number: 955963

Country of ref document: FI

ENP Entry into the national phase

Ref document number: 1995 571905

Country of ref document: US

Date of ref document: 19951214

Kind code of ref document: A

WWP Wipo information: published in national office

Ref document number: PV1995-3293

Country of ref document: CZ

WWP Wipo information: published in national office

Ref document number: 1994915687

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 1996 766323

Country of ref document: US

Date of ref document: 19961213

Kind code of ref document: A

WWG Wipo information: grant in national office

Ref document number: 1994915687

Country of ref document: EP

WWR Wipo information: refused in national office

Ref document number: PV1995-3293

Country of ref document: CZ