US20040091185A1 - Packaging bag with zipper - Google Patents
Packaging bag with zipper Download PDFInfo
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- US20040091185A1 US20040091185A1 US10/700,900 US70090003A US2004091185A1 US 20040091185 A1 US20040091185 A1 US 20040091185A1 US 70090003 A US70090003 A US 70090003A US 2004091185 A1 US2004091185 A1 US 2004091185A1
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- Prior art keywords
- zipper
- resin
- bag
- packaging bag
- tapes
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- 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
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/16—End- or aperture-closing arrangements or devices
- B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
- B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
Definitions
- the present invention relates to a packaging bag with a zipper.
- a conventional packaging bag with zipper of this kind is known from Utility Model Registration No. 2557256, for example.
- a packaging bag is conventionally known wherein an openable and closable zipper which performs a male and female coupling action is provided at opposing positions of a bag in the vicinity of the opening end thereof, and in an integral fashion with the bag.
- the present invention was devised to resolve the problems, an object thereof being to make it possible readily to identify whether or not a packaging bag with zipper has been opened.
- a packaging bag with zipper in which the lower end portion of a male zipper tape and the lower end portion of a female zipper tape are bonded to the inner faces of respective front side and rear side sheet sections, or rear side and front side sheet sections, along the opening end of the bag.
- the upper end of the bag comes at the top when the bag is in an upright state, and the respective zipper tapes are bonded together at a position below the engaging section thereof, with heat sealing strength of a degree that allows the zipper tapes to be manually peeled apart, by means of an interface peeling action, an interlayer peeling action, or a cohesive peeling action.
- either one of the zipper tapes is made from a hot melt type adhesive resin, and the other zipper tape is made from a polyethylene type resin or a polypropylene type resin of the same kind as a material forming the inner layers of the bag.
- either one of the zipper tapes is made from a hot melt type adhesive resin, and both the outer face and the inner face of the other zipper tape are made from a polyethylene type resin or a polypropylene type resin of the same kind as a material forming the inner layer of the bag.
- one of the zipper tapes is made from a hot melt type adhesive resin
- the outer face of the other zipper tape is made from a polyethylene type resin or polypropylene type resin of the same type as the material forming the inner layers of the bag
- the inner face of the other zipper tape is made from a polyethylene type resin or polypropylene type resin of a different type from the material forming the inner layers of the bag.
- the inner faces of both zipper tapes are made from a polyethylene type resin or polypropylene type resin, and a hot melt type adhesive resin section is provided on the inner face of one of the zipper tapes, at least in a bonding section formed by heat sealing in a position below the engaging section of the zipper tapes.
- a hot melt type adhesive resin section that is to be bonded to the inner layer of the bag, is provided in at least the lower end portion of the outer face of the zipper tape made from a polyethylene type resin or a polypropylene type resin.
- both zipper tapes are made from a resin containing a material comprising a random mixture of a straight-chain low-density polyethylene type resin and a polybutene-1 resin.
- a resin section containing a material comprising a random mixture of a straight-chain low-density polyethylene type resin and a polybutene-1 resin is provided on the inner faces of both zipper tapes, at least in the bonding section formed by heat sealing below the engaging section of the zipper tapes.
- the male zipper tape and the female zipper tape are respectively coloured with mutually different colours.
- zipper tapes are bonded together at a position below the engaging section of the zipper tapes, with heat sealing strength that allows the bonding section of the zipper tapes to be peeled apart by hand.
- heat sealing strength that allows the bonding section of the zipper tapes to be peeled apart by hand.
- the bonding section of the zipper tapes can be changed to a separate colour, by means of colour mixing, and if a user has mistakenly opened the zipper and peeled apart the bonding section of the zipper tapes, for example, the colour of the section will revert to the original colours of the respective zipper tapes. Thus, it is easy to identify whether or not the packaging bag has been opened.
- FIG. 1 is a perspective view of a packaging bag with zipper according to a first embodiment of the present invention
- FIG. 2 is an enlarged sectional view of a principal part of this packaging bag with zipper
- FIG. 3 is an enlarged sectional view of the principal part of this packaging bag with zipper, showing the bag in an open state;
- FIG. 4 is an enlarged sectional view of a principal part of a packaging bag with zipper according to a second embodiment, showing the bag in an open state;
- FIG. 5 is an enlarged sectional view of a principal part of a packaging bag with zipper according to a third embodiment, showing the bag in an open state;
- FIG. 6 is an enlarged sectional view of a principal part of a packaging bag with zipper according to a fourth embodiment, showing the bag in an open state.
- numeral 1 denotes a packaging bag, and this packaging bag 1 is closed by heat sealing at three edges, namely, the lower end when the bag is in an upright state, and the two respective side edges.
- Numeral 2 denotes the heat seal section of the bag.
- Zipper tapes 5 , 6 are provided in an integral fashion at the opening end of the bag which comes at the top when the packaging bag 1 is in an upright state, by heat sealing and bonding the lower end portion of a male zipper tape 5 and a female zipper tape 6 to the inner faces of respective sheet sections 3 , 4 on the front side and rear side (or rear side and front side) of the bag 1 .
- the zipper tapes 5 and 6 are provided in such a manner that they project from the upper end of the packaging bag 1 .
- the sheet sections 3 , 4 forming the packaging bag 1 have a two-layer structure in which the outer layers 3 a, 4 a thereof are made from nylon film and the inner layers 3 b, 4 b are made from polyethylene film, and the male zipper tape 5 and female zipper tape 6 which are bonded to the inner faces of these respective sheet sections 3 , 4 along the opening end of the packaging bag 1 are made from materials described below.
- A is a hot melt type adhesive resin
- B is a polypropylene type resin
- a polyethylene type resin layer 7 and a hot melt type adhesive resin layer 8 are formed respectively by combined extrusion on the material A forming the male zipper tape 5 and material B forming the female zipper tape 6 , on the faces thereof which oppose the inner faces 3 b, 4 b of the respective sheet sections 3 , 4 .
- the male zipper tape 5 and the female zipper tape 6 are heat sealed, respectively, onto the inner face of the sheet section 3 and the inner face of the sheet section, at a temperature of 180° C., for example, a sealing time of one second, and a sealing pressure of 20 N/cm 2 , then the polyethylene type resin layer 7 of the zipper tape 5 and the inner layer 3 b of the polyethylene film of the sheet section 3 fuse together, and the hot melt type adhesive resin layer 8 of the zipper tape 6 fuses with the inner layer 4 b of the polyethylene film of the sheet section 4 .
- the polyethylene type resin layer 7 of the zipper tape 5 and the polyethylene film of the inner layer 3 b of the sheet section 3 are of the same type and become completely fused together, and the hot melt type adhesive resin layer 8 of the zipper tape 6 and the polyethylene film of the inner layer 4 b of the sheet section 4 are bonded together by a heat sealing strength of approximately 5 N/15 mm.
- the hot melt type adhesive resin has characteristics whereby, when heated, it bonds with polyolefin type resins, such as polyethylene, and has a heat sealing strength with polyolefin type resins of 5 N/15 mm or above.
- the respective zipper tapes 5 , 6 are bonded together by heat sealing along a lower end in the width direction of the zipper portion when the packaging bag 1 is in an upright state, in such a manner that the zipper tapes can be peeled apart by an interface peeling action.
- Numeral 9 denotes a bonding section between the zipper tapes 5 , 6 . Since the material of the zipper tape 5 is a hot melt type adhesive resin, and the material of the zipper tape 6 is a polypropylene type resin, the heat sealing strength will be approximately 5 N/15 mm described above. This heat sealing strength of approximately 5 N/15 mm is of a degree that allows the zipper tapes to be peeled apart readily by hand.
- a blue colouring agent is incorporated into the hot melt type adhesive resin which is the material forming the zipper tape 5
- a yellow colouring agent is incorporated into the polypropylene type resin which is the material forming the zipper tape 6 , so that when the respective zipper tapes 5 , 6 are in a state of being bonded together by heat sealing, the colour of the bonding section becomes green, due to the mixing of the colours.
- both of the zipper tapes 5 , 6 from a transparent material, and performing coloration of the polyethylene type resin layer 7 and the hot melt type adhesive resin 8 provided on the outer sides thereof, using a blue colouring agent and a yellow colouring agent, respectively, it is possible to make the colour of the bonding section a green colour, by mixing the colours, similarly to the foregoing, when the two zipper tapes 5 , 6 are bonded together by heat sealing.
- a resin suitable for bonding the zipper tapes 5 , 6 together in such a manner that they can be peeled apart by an interface peeling action for example, a resin formed from a resin composition comprising at least one type of resin selected from a group comprising ethylene ethylacrylate copolymer comprising a main ingredient of ethylene vinyl acetate copolymer manufactured by Hirodine Corp., and petroleum resins, turpentine resins and rosin type resins.
- the material of the male zipper tape 5 is stated as a hot melt type adhesive resin
- the material of the female zipper tape 6 is stated as a polypropylene type resin, but a reverse configuration is also possible.
- a hot melt type adhesive resin layer is formed on the male zipper tape 5
- a polyethylene type resin layer is formed on the female zipper tape 6 .
- a slider is provided on the zipper, but it is of course also possible to implement the present invention with a zipper having no slider.
- a product (a bag containing contents) is arranged in a store display cabinet in a state in which the lower end sections of respective zipper tapes 5 , 6 are bonded together with heat sealing strength of a degree that allows the bonding section of the zipper tapes to be readily peeled apart by hand, at the height of the bonding section of the tapes to the sheet sections 3 , 4 of the packaging bag 1 .
- the colour (green) of the bonding section 9 will revert to the colours of the respective zipper tapes 5 , 6 (blue, yellow) or, if the zipper tapes 5 , 6 are transparent, it will revert to the colours of the polyethylene type resin layer 7 and the hot melt type adhesive resin layer 8 provided on the outer sides thereof. Hence it will be possible to confirm that the packaging bag 1 has been opened.
- the heat sealing strength of the bonding section 9 between the zipper tapes 5 , 6 is approximately the same as the heat sealing strength between the inner face of the packaging bag 1 and the female zipper tape 6 that is made of a polypropylene type resin and has a hot melt type adhesive resin layer 8 provided on the surface thereof. But since the bonding section 9 is situated at the lower end section of the location of the zipper tapes, the female zipper tape 6 and the packaging bag 1 are not liable to be peeled apart when the bonding section 9 is peeled apart by means of the user's fingers.
- the zipper tape 5 is coloured blue and the zipper tape 6 is coloured yellow, in such a manner that the heat-sealed bonding section becomes green in colour, but it is also possible to use other colour combinations. It is not necessarily required to perform colouring of the zipper tapes 5 , 6 , and when the bonding section 9 of the zipper tapes 5 , 6 has been peeled apart, it can be readily identified that the packaging bag 1 has been opened.
- the two zipper tapes 5 , 6 are bonded together in such a manner that they can be peeled apart by means of an interface peeling action, with heat sealing strength of a degree that permits the tapes to be peeled apart manually, at a position below the engaging section 10 of the zipper tapes 5 , 6 .
- a hot melt type adhesive resin used for forming a cohesive peel it would be suitable to use a polymer alloyed resin containing a polyolefin known as VMX (registered trademark) manufactured by Mitsubishi Chemical Corp. as a main ingredient.
- the polymer alloyed resin essentially consists of a multi-component polymer including a polyolefin resin which is grafted with a radical polymerisation monomer and contains a non-crystalline vinyl polymer in a uniform manner, and a polymer including polyolefin dispersed with styrene in the dispersion phase of polyolefin.
- the packaging bag 1 is made from a synthetic resin fabricated from sheet sections 3 , 4 having a two-layer structure comprising nylon film in the outer layers 3 a, 4 a and polyethylene film in the inner layers 3 b, 4 b, but the materials used are not limited in particular to these.
- a synthetic resin film such as a polyethylene film or a polypropylene film, or the like, is used to fabricate the inner layers, due to the requirements of heat sealing, it is possible to use a material other than a synthetic resin, such as aluminium foil, paper, rayon paper, or the like, as a material to be laminated on the outer sides of the inner layers.
- a polyethylene type resin layer 7 and a hot melt type adhesive resin layer 8 are formed respectively on the faces opposing the inner layers 3 b, 4 b of the respective sheet sections 3 , 4 but whilst the hot melt type adhesive resin layer 8 provided on the side of the female zipper tape 6 made from a polypropylene type resin is required, it is possible to omit the polyethylene type resin layer 7 provided on the side of the male zipper tape 5 made from a hot melt type adhesive resin.
- the male zipper tape or the female zipper tape from a hot melt type adhesive resin
- the other zipper tape made from a polyethylene type resin since the other zipper tape made from a polyethylene type resin is of the same type as the polyethylene film on the inner layer 3 b of the sheet section 3 , it will fuse completely with same, and the zipper tape made from a hot melt type adhesive resin and the polyethylene film on the inner layer 4 b of the sheet section 4 will be bonded together by a heat sealing strength of approximately 5 N/15 mm, similarly to the embodiment described above.
- the heat sealing strength between the zipper tapes may also be approximately 5 N/15 mm, and the two zipper tapes may be bonded together on the basis of an interface peeling action, as in the embodiment described above, or a interlayer peeling action, or a cohesive peeling action.
- a composition may also be adopted wherein one of the zipper tapes is made from a hot melt type adhesive resin, and the outer face of the other zipper tape is made from a polyethylene type resin, whilst the inner face thereof is made from a polypropylene type resin which is different to the material forming the inner layer of the packaging bag 1 .
- the zipper tapes 5 , 6 are bonded by heat sealing to the inner faces of the respective sheet sections 3 , 4 of the packaging bag 1 , but it is also possible for the two zipper tapes 5 , 6 to be installed on the inner faces of the respective sheet sections 3 , 4 of the packaging bag 1 by being laid respectively over the inner faces of the sheet sections 3 , 4 of the packaging bag 1 in a sheet state, and bonded to same, whilst the zipper tapes 5 , 6 are in a molten state directly after molten extrusion.
- FIG. 4 shows a second embodiment of the present invention.
- the second embodiment illustrated in FIG. 4 is a modification of the first embodiment shown in FIG. 1-FIG. 3 .
- the male zipper tape 5 and the hot melt type adhesive resin layer 8 provided on the outer face of the female zipper tape 6 are made entirely from a hot melt type adhesive resin
- the male zipper tape 5 is made from a polyethylene type resin of the same kind as the inner layer 3 b of the packaging bag 1
- the female zipper tape 6 is made from a polypropylene type resin
- a section 12 made from a hot melt type adhesive resin being provided on the inner face of the male zipper tape 5 only in the vicinity of the bonding section 9 between the zipper tapes 5 , 6
- a section 13 made from a hot melt type adhesive resin bonded to the inner layer 4 b of the packaging bag 1 being provided on the outer face of the lower end section of the female zipper tape 6 .
- FIG. 5 shows a third embodiment of the present invention.
- the male zipper tape 5 and the female zipper tape 6 are both made from a polyethylene type resin of the same type as forming the inner layers 3 b, 4 b of the packaging bag 1 , and a section 14 made from a hot melt type adhesive resin is provided on the inner face of the female zipper tape 6 , only in the vicinity of the bonding section 9 of the zipper tapes 5 , 6 .
- both the zipper tapes 5 , 6 are made from a resin containing a random mixture of a straight-chain type low-density polyethylene resin and a polybutene-1 resin, for example, as means for bonding the zipper tapes 5 , 6 together in a readily peelable manner, in a position below the engaging section 10 , with heat sealing strength of a degree that allows the zipper tapes to be manually peeled apart.
- the bonding section 9 along the lower end section of the zipper tapes 5 , 6 fabricated from the foregoing material will not couple completely, and hence it will be possible to peel apart the bonding section 9 of the zipper tapes 5 , 6 , readily and manually, by means of a cohesive peeling action.
- FIG. 6 shows a fourth embodiment of the present invention.
- both of the zipper tapes 5 , 6 are made from a polyethylene type resin of the same type as forming the inner layers 3 b, 4 b of the packaging bag 1 , and resin sections 15 , 16 containing a resin comprising a random mixture of a straight-chain low-density polyethylene type resin and a polybutene-1 resin are provided on the inner faces of the two zipper tapes 5 , 6 at least in the vicinity of the bonding section 9 located below the engaging section 10 of the zipper tapes 5 , 6 .
- the respective zipper tapes 5 , 6 may have a structure comprising three or more layers.
- a adhesive resin a material other than a polyethylene type resin or a polypropylene type resin, a hot melt type adhesive resin, or a resin containing a random mixture of a straight-chain type low-density polyethylene type resin and a polybutene-1 resin.
- the bonding section 9 of the zipper tapes 5 , 6 is bonded with a heat seal strength of approximately 5 N/15 mm, but it may be sufficient if the heat sealing strength is 1 N/15 mm or above.
Abstract
A packaging bag with zipper is provided, which enables easy identification whether or not the bag has been opened. For this purpose, in the packaging bag with zipper, the lower end portion of a male zipper tape and the lower end portion of a female zipper tape are bonded to the inner faces of respective front side and rear side sheet sections, or vice versa, along the opening end of the bag. The opening end comes at the top when the bag is in an upright state. The respective zipper tapes are bonded together at a position below the engaging section of the zipper tapes with heat sealing strength of a degree that allows the zipper tapes to be manual peeling apart, in such a manner that they may be manually peeled apart by an interface peeling action, an interlayer peeling action, or a cohesive peeling action.
Description
- 1. Field of the Invention
- The present invention relates to a packaging bag with a zipper.
- 2. Description of the Related Art
- A conventional packaging bag with zipper of this kind is known from Utility Model Registration No. 2557256, for example. In other words, a packaging bag is conventionally known wherein an openable and closable zipper which performs a male and female coupling action is provided at opposing positions of a bag in the vicinity of the opening end thereof, and in an integral fashion with the bag.
- In a packaging bag of the kind disclosed in Utility Model Registration No. 2557256 described above, which comprises an integrally provided openable and closable zipper performing a male and female coupling action, in most cases of a packaging bag with zipper which is not provided with a slider, the perimeter of the bag, including the edge adjacent to the opening end of the bag close to a location of the zipper, is closed by heat sealing. Thus, the bag cannot be opened by opening the zipper unless the heat seal section along the edge adjacent to the opening end of the bag is cut. There are also such bags, however, that are not heat sealed along the edge adjacent to the opening end of the bag close to the location of the zipper. Such bags can simply be opened by opening the zipper at a shop display cabinet, for instance. If the bag is then closed again after opening, it cannot be identified whether or not it has been opened, posing management problems.
- Furthermore, in the case of a packaging bag with zipper that is provided with a slider, the zipper is provided along the opening end of the bag and a slider is provided movably in the longitudinal direction of the zipper, making it impossible to close the opening end of the bag by heat sealing. Hence similar management problems arise with this kind of packaging bags with zipper that are provided with a slider.
- The present invention was devised to resolve the problems, an object thereof being to make it possible readily to identify whether or not a packaging bag with zipper has been opened.
- In order to achieve the object, the present invention is devised as follows:
- A packaging bag with zipper, in which the lower end portion of a male zipper tape and the lower end portion of a female zipper tape are bonded to the inner faces of respective front side and rear side sheet sections, or rear side and front side sheet sections, along the opening end of the bag. The upper end of the bag comes at the top when the bag is in an upright state, and the respective zipper tapes are bonded together at a position below the engaging section thereof, with heat sealing strength of a degree that allows the zipper tapes to be manually peeled apart, by means of an interface peeling action, an interlayer peeling action, or a cohesive peeling action.
- In the packaging bag with zipper, either one of the zipper tapes is made from a hot melt type adhesive resin, and the other zipper tape is made from a polyethylene type resin or a polypropylene type resin of the same kind as a material forming the inner layers of the bag.
- In the packaging bag with zipper, either one of the zipper tapes is made from a hot melt type adhesive resin, and both the outer face and the inner face of the other zipper tape are made from a polyethylene type resin or a polypropylene type resin of the same kind as a material forming the inner layer of the bag.
- In the packaging bag with zipper, one of the zipper tapes is made from a hot melt type adhesive resin, the outer face of the other zipper tape is made from a polyethylene type resin or polypropylene type resin of the same type as the material forming the inner layers of the bag, and the inner face of the other zipper tape is made from a polyethylene type resin or polypropylene type resin of a different type from the material forming the inner layers of the bag.
- In the packaging bag with zipper, the inner faces of both zipper tapes are made from a polyethylene type resin or polypropylene type resin, and a hot melt type adhesive resin section is provided on the inner face of one of the zipper tapes, at least in a bonding section formed by heat sealing in a position below the engaging section of the zipper tapes.
- In the packaging bag with zipper, a hot melt type adhesive resin section that is to be bonded to the inner layer of the bag, is provided in at least the lower end portion of the outer face of the zipper tape made from a polyethylene type resin or a polypropylene type resin.
- In the packaging bag with zipper, both zipper tapes are made from a resin containing a material comprising a random mixture of a straight-chain low-density polyethylene type resin and a polybutene-1 resin.
- In the packaging bag with zipper, a resin section containing a material comprising a random mixture of a straight-chain low-density polyethylene type resin and a polybutene-1 resin is provided on the inner faces of both zipper tapes, at least in the bonding section formed by heat sealing below the engaging section of the zipper tapes.
- In the packaging bag with zipper, the male zipper tape and the female zipper tape are respectively coloured with mutually different colours.
- According to the foregoing, zipper tapes are bonded together at a position below the engaging section of the zipper tapes, with heat sealing strength that allows the bonding section of the zipper tapes to be peeled apart by hand. Thus, if a user has mistakenly opened the zipper and peeled apart the bonding section of the zipper tapes, for example, it will be possible to confirm that the packaging bag has been opened. In particular, by colouring the male zipper tape and the female zipper tape, respectively with mutually different colours, the bonding section of the zipper tapes can be changed to a separate colour, by means of colour mixing, and if a user has mistakenly opened the zipper and peeled apart the bonding section of the zipper tapes, for example, the colour of the section will revert to the original colours of the respective zipper tapes. Thus, it is easy to identify whether or not the packaging bag has been opened.
- FIG. 1 is a perspective view of a packaging bag with zipper according to a first embodiment of the present invention;
- FIG. 2 is an enlarged sectional view of a principal part of this packaging bag with zipper;
- FIG. 3 is an enlarged sectional view of the principal part of this packaging bag with zipper, showing the bag in an open state;
- FIG. 4 is an enlarged sectional view of a principal part of a packaging bag with zipper according to a second embodiment, showing the bag in an open state;
- FIG. 5 is an enlarged sectional view of a principal part of a packaging bag with zipper according to a third embodiment, showing the bag in an open state; and
- FIG. 6 is an enlarged sectional view of a principal part of a packaging bag with zipper according to a fourth embodiment, showing the bag in an open state.
- In FIG. 1 to FIG. 3,
numeral 1 denotes a packaging bag, and thispackaging bag 1 is closed by heat sealing at three edges, namely, the lower end when the bag is in an upright state, and the two respective side edges. Numeral 2 denotes the heat seal section of the bag.Zipper tapes packaging bag 1 is in an upright state, by heat sealing and bonding the lower end portion of amale zipper tape 5 and afemale zipper tape 6 to the inner faces ofrespective sheet sections bag 1. In other words, thezipper tapes packaging bag 1. - The
sheet sections packaging bag 1 have a two-layer structure in which theouter layers inner layers male zipper tape 5 andfemale zipper tape 6 which are bonded to the inner faces of theserespective sheet sections packaging bag 1 are made from materials described below. - For example, taking the material of the
male zipper tape 5 as A and the material of thefemale zipper tape 6 as B, then A is a hot melt type adhesive resin and B is a polypropylene type resin, and a polyethylenetype resin layer 7 and a hot melt typeadhesive resin layer 8 are formed respectively by combined extrusion on the material A forming themale zipper tape 5 and material B forming thefemale zipper tape 6, on the faces thereof which oppose theinner faces respective sheet sections male zipper tape 5 and thefemale zipper tape 6 are heat sealed, respectively, onto the inner face of thesheet section 3 and the inner face of the sheet section, at a temperature of 180° C., for example, a sealing time of one second, and a sealing pressure of 20 N/cm2, then the polyethylenetype resin layer 7 of thezipper tape 5 and theinner layer 3 b of the polyethylene film of thesheet section 3 fuse together, and the hot melt typeadhesive resin layer 8 of thezipper tape 6 fuses with theinner layer 4 b of the polyethylene film of thesheet section 4. In this case, the polyethylenetype resin layer 7 of thezipper tape 5 and the polyethylene film of theinner layer 3 b of thesheet section 3 are of the same type and become completely fused together, and the hot melt typeadhesive resin layer 8 of thezipper tape 6 and the polyethylene film of theinner layer 4 b of thesheet section 4 are bonded together by a heat sealing strength of approximately 5 N/15 mm. In other words, it was found on the basis of experimentation, that the hot melt type adhesive resin has characteristics whereby, when heated, it bonds with polyolefin type resins, such as polyethylene, and has a heat sealing strength with polyolefin type resins of 5 N/15 mm or above. - Furthermore, in the
packaging bag 1 with zipper according to the present embodiment, therespective zipper tapes packaging bag 1 is in an upright state, in such a manner that the zipper tapes can be peeled apart by an interface peeling action. Numeral 9 denotes a bonding section between thezipper tapes zipper tape 5 is a hot melt type adhesive resin, and the material of thezipper tape 6 is a polypropylene type resin, the heat sealing strength will be approximately 5 N/15 mm described above. This heat sealing strength of approximately 5 N/15 mm is of a degree that allows the zipper tapes to be peeled apart readily by hand. In the present embodiment, a blue colouring agent is incorporated into the hot melt type adhesive resin which is the material forming thezipper tape 5, and a yellow colouring agent is incorporated into the polypropylene type resin which is the material forming thezipper tape 6, so that when therespective zipper tapes zipper tapes type resin layer 7 and the hot melt typeadhesive resin 8 provided on the outer sides thereof, using a blue colouring agent and a yellow colouring agent, respectively, it is possible to make the colour of the bonding section a green colour, by mixing the colours, similarly to the foregoing, when the twozipper tapes - Since the
engaging section 10 of themale zipper tape 5 and thefemale zipper tape 6 will deform if heat is applied thereto, only the lower end portions of therespective zipper tapes sheet sections engaging section 10, are bonded by heat sealing. In the drawings, 11 denotes a slider for opening and closing thezipper tapes - Various types of hot melt type adhesive resin are known, but in the present embodiment, it is possible to use, as a resin suitable for bonding the
zipper tapes - Moreover, in the embodiment described above, the material of the
male zipper tape 5 is stated as a hot melt type adhesive resin, and the material of thefemale zipper tape 6 is stated as a polypropylene type resin, but a reverse configuration is also possible. In this case, a hot melt type adhesive resin layer is formed on themale zipper tape 5, and a polyethylene type resin layer is formed on thefemale zipper tape 6. - Furthermore, with respect to the shape of the
packaging bag 1, in addition to the embodiment described above, it is also possible to use a gusset type, butt-seam type, or standing pack type, or the like. - Moreover, in the embodiment described above, a slider is provided on the zipper, but it is of course also possible to implement the present invention with a zipper having no slider.
- As described above, in the present embodiment, a product (a bag containing contents) is arranged in a store display cabinet in a state in which the lower end sections of
respective zipper tapes sheet sections packaging bag 1. Thus, if a user has mistakenly opened the zipper and peeled apart thebonding section 9 of thezipper tapes bonding section 9 will revert to the colours of therespective zipper tapes 5, 6 (blue, yellow) or, if thezipper tapes type resin layer 7 and the hot melt typeadhesive resin layer 8 provided on the outer sides thereof. Hence it will be possible to confirm that thepackaging bag 1 has been opened. - If the lower end sections of the
zipper tapes bag 1, he or she can extract the contents from thepackaging bag 1 by opening the zipper and peeling apart thebonding section 9 between thezipper tapes bonding section 9 between thezipper tapes packaging bag 1 and thefemale zipper tape 6 that is made of a polypropylene type resin and has a hot melt typeadhesive resin layer 8 provided on the surface thereof. But since thebonding section 9 is situated at the lower end section of the location of the zipper tapes, thefemale zipper tape 6 and thepackaging bag 1 are not liable to be peeled apart when thebonding section 9 is peeled apart by means of the user's fingers. - In the present embodiment, the
zipper tape 5 is coloured blue and thezipper tape 6 is coloured yellow, in such a manner that the heat-sealed bonding section becomes green in colour, but it is also possible to use other colour combinations. It is not necessarily required to perform colouring of thezipper tapes bonding section 9 of thezipper tapes packaging bag 1 has been opened. - Moreover, in the embodiment described above, the two
zipper tapes section 10 of thezipper tapes - Furthermore, in the embodiment described above, the
packaging bag 1 is made from a synthetic resin fabricated fromsheet sections outer layers inner layers - Moreover, in the embodiment described above, in the
male zipper tape 5 made from a hot melt type adhesive resin and thefemale zipper tape 6 made from a propylene type resin, a polyethylenetype resin layer 7 and a hot melt typeadhesive resin layer 8 are formed respectively on the faces opposing theinner layers respective sheet sections adhesive resin layer 8 provided on the side of thefemale zipper tape 6 made from a polypropylene type resin is required, it is possible to omit the polyethylenetype resin layer 7 provided on the side of themale zipper tape 5 made from a hot melt type adhesive resin. Moreover, it is also possible to make the male zipper tape or the female zipper tape from a hot melt type adhesive resin, and to make the other zipper tape from a polyethylene type resin, and in this case, since the other zipper tape made from a polyethylene type resin is of the same type as the polyethylene film on theinner layer 3 b of thesheet section 3, it will fuse completely with same, and the zipper tape made from a hot melt type adhesive resin and the polyethylene film on theinner layer 4 b of thesheet section 4 will be bonded together by a heat sealing strength of approximately 5 N/15 mm, similarly to the embodiment described above. Moreover, the heat sealing strength between the zipper tapes may also be approximately 5 N/15 mm, and the two zipper tapes may be bonded together on the basis of an interface peeling action, as in the embodiment described above, or a interlayer peeling action, or a cohesive peeling action. Furthermore, a composition may also be adopted wherein one of the zipper tapes is made from a hot melt type adhesive resin, and the outer face of the other zipper tape is made from a polyethylene type resin, whilst the inner face thereof is made from a polypropylene type resin which is different to the material forming the inner layer of thepackaging bag 1. - Furthermore, in the embodiment described above, the
zipper tapes respective sheet sections packaging bag 1, but it is also possible for the twozipper tapes respective sheet sections packaging bag 1 by being laid respectively over the inner faces of thesheet sections packaging bag 1 in a sheet state, and bonded to same, whilst thezipper tapes - FIG. 4 shows a second embodiment of the present invention.
- The second embodiment illustrated in FIG. 4 is a modification of the first embodiment shown in FIG. 1-FIG.3. Whereas in the first embodiment, the
male zipper tape 5 and the hot melt typeadhesive resin layer 8 provided on the outer face of thefemale zipper tape 6 are made entirely from a hot melt type adhesive resin, in the second embodiment, themale zipper tape 5 is made from a polyethylene type resin of the same kind as theinner layer 3 b of thepackaging bag 1, and thefemale zipper tape 6 is made from a polypropylene type resin, asection 12 made from a hot melt type adhesive resin being provided on the inner face of themale zipper tape 5 only in the vicinity of thebonding section 9 between thezipper tapes section 13 made from a hot melt type adhesive resin bonded to theinner layer 4 b of thepackaging bag 1 being provided on the outer face of the lower end section of thefemale zipper tape 6. It is also possible to provide a section made from a polyethylene type resin of the same kind as theinner layer 4 b of thepackaging bag 1, instead of thesection 13 made from a hot melt type adhesive resin. Even if a hot melt type adhesive resin section is provided in a minimum necessary area at a position below the engagingsection 10 of thezipper tapes male zipper tape 5 is made from a hot melt type adhesive resin, thesection 12 made from a hot melt type adhesive resin can be omitted. - FIG. 5 shows a third embodiment of the present invention.
- In the third embodiment shown in FIG. 5, the
male zipper tape 5 and thefemale zipper tape 6 are both made from a polyethylene type resin of the same type as forming theinner layers packaging bag 1, and a section 14 made from a hot melt type adhesive resin is provided on the inner face of thefemale zipper tape 6, only in the vicinity of thebonding section 9 of thezipper tapes - Furthermore, both the
zipper tapes zipper tapes section 10, with heat sealing strength of a degree that allows the zipper tapes to be manually peeled apart. Thus, thebonding section 9 along the lower end section of thezipper tapes bonding section 9 of thezipper tapes - FIG. 6 shows a fourth embodiment of the present invention.
- In the fourth embodiment shown in FIG. 6, both of the
zipper tapes inner layers packaging bag 1, andresin sections zipper tapes bonding section 9 located below the engagingsection 10 of thezipper tapes bonding section 9 in the lower end section of thezipper tapes bonding section 9 of thezipper tapes - In the embodiment illustrated in the drawings, the
respective zipper tapes zipper tapes - Furthermore, in the foregoing description, the
bonding section 9 of thezipper tapes
Claims (9)
1. A packaging bag with zipper, in which a lower end portion of a male zipper tape and a lower end portion of a female zipper tape are bonded to inner faces of respective front side and rear side sheet sections, or rear side and front side sheet sections, along an opening end of the bag, the opening end being located at an upper en of the bag when the bag is in an upright state, wherein
the respective zipper tapes are bonded together at a position below an engaging section of the zipper tapes, with heat sealing strength of a degree that allows the bonded zipper tapes to be manually peeled apart, by means of an interface peeling action, an interlayer peeling action, or a cohesive peeling action.
2. The packaging bag with zipper according to claim 1 , wherein one of the zipper tapes is made from a hot melt type adhesive resin, and the other zipper tape is made from a polyethylene type resin or polypropylene type resin of a same kind as a material forming inner layers of the bag.
3. The packaging bag with zipper according to claim 1 , wherein either one of the zipper tapes is made from a hot melt type adhesive resin, and both the outer face and the inner face of the other zipper tape are made from a polyethylene type resin or a polypropylene type resin of a same kind as a material forming the inner layer of the bag.
4. The packaging bag with zipper according to claim 1 , wherein one of the zipper tapes is made from a hot melt type adhesive resin, and the other zipper tape is made to have an outer face made from a polyethylene type resin or polypropylene type resin of a same kind as a material forming inner layers of the bag, and to have an inner face made from a polyethylene type resin or polypropylene type resin of a different kind from the material forming the inner layers of the bag.
5. The packaging bag with zipper according to claim 1 , wherein the inner faces of both zipper tapes are made from a polyethylene type resin or polypropylene type resin, and a hot melt type adhesive resin section is provided on the inner face of one of the zipper tapes, at least in a bonding section formed by heat sealing below the engaging section of the zipper tapes.
6. The packaging bag with zipper according to claim 1 , wherein a hot melt type adhesive resin section that is to be bonded to the inner layer of the bag, is provided in at least the lower end portion of the outer face of the zipper tape made from a polyethylene type resin or a polypropylene type resin.
7. The packaging bag with zipper according to claim 1 , wherein both zipper tapes are made from a resin containing a material comprising a random mixture of a straight-chain low-density polyethylene type resin and a polybutene-1 resin.
8. The packaging bag with zipper according to claim 1 , wherein a resin section containing a material comprising a random mixture of a straight-chain low-density polyethylene type resin and a polybutene-1 resin is provided on the inner faces of both zipper tapes, at least in a bonding section formed by heat sealing below the engaging section of the zipper tapes.
9. The packaging bag with zipper according to claim 1 , wherein the male zipper tape and the female zipper tape are respectively coloured with mutually different colours.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002323229 | 2002-11-07 | ||
JP2002-323229 | 2002-11-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20040091185A1 true US20040091185A1 (en) | 2004-05-13 |
Family
ID=32105469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/700,900 Abandoned US20040091185A1 (en) | 2002-11-07 | 2003-11-04 | Packaging bag with zipper |
Country Status (2)
Country | Link |
---|---|
US (1) | US20040091185A1 (en) |
EP (1) | EP1418132A1 (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040091186A1 (en) * | 2002-11-07 | 2004-05-13 | Daiwa Gravure Co. Ltd. | Packaging bag with zipper |
US20070116386A1 (en) * | 2005-11-01 | 2007-05-24 | Sprague Paul A | Package closure and method |
US7784160B2 (en) | 2007-03-16 | 2010-08-31 | S.C. Johnson & Son, Inc. | Pouch and airtight resealable closure mechanism therefor |
US7857515B2 (en) | 2007-06-15 | 2010-12-28 | S.C. Johnson Home Storage, Inc. | Airtight closure mechanism for a reclosable pouch |
US7874731B2 (en) | 2007-06-15 | 2011-01-25 | S.C. Johnson Home Storage, Inc. | Valve for a recloseable container |
US7886412B2 (en) | 2007-03-16 | 2011-02-15 | S.C. Johnson Home Storage, Inc. | Pouch and airtight resealable closure mechanism therefor |
US7887238B2 (en) | 2007-06-15 | 2011-02-15 | S.C. Johnson Home Storage, Inc. | Flow channels for a pouch |
US7946766B2 (en) | 2007-06-15 | 2011-05-24 | S.C. Johnson & Son, Inc. | Offset closure mechanism for a reclosable pouch |
US7967509B2 (en) | 2007-06-15 | 2011-06-28 | S.C. Johnson & Son, Inc. | Pouch with a valve |
US20110293204A1 (en) * | 2010-01-28 | 2011-12-01 | Illinois Tool Works Inc. | Zipper profiles with foamed sealant |
US9033578B2 (en) | 2011-03-30 | 2015-05-19 | Lee Rachel Ostroy | Reusable food storage bag and process for making a reusable storage bag |
US20160083148A1 (en) * | 2013-10-22 | 2016-03-24 | Mupack Ozaki Corporation | Slider structure |
CN108697209A (en) * | 2016-01-20 | 2018-10-23 | 泰斯勤·汤姆斯 | Modified slide fastener block system |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10325175B4 (en) * | 2003-01-24 | 2005-09-01 | Nordenia Deutschland Gronau Gmbh | Closure system for flexible packaging |
FR2884498B1 (en) * | 2005-04-14 | 2010-02-05 | S2F Flexico | BAG COMPRISING PERFECTIONAL CLOSURE MEANS |
US7610662B2 (en) | 2006-11-15 | 2009-11-03 | Illinois Tool Works Inc. | Leakproof slider zipper |
NZ588496A (en) * | 2010-10-11 | 2010-12-24 | Technopak Ltd | Sealed and secure packaging methods |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4710968A (en) * | 1985-09-11 | 1987-12-01 | First Brands Corporation | Trident interlocking closure profile configuration |
US4925316A (en) * | 1986-08-11 | 1990-05-15 | Minigrip, Inc. | Reclosable bag having an outer reclosable zipper type closure and inner non-reclosable closure |
US5140796A (en) * | 1991-11-04 | 1992-08-25 | Pope William K | Closure tool for resealable bags |
US5525363A (en) * | 1991-05-31 | 1996-06-11 | Kraft Foods, Inc. | Cheese pouch having easy opening and reclosing characteristics |
US5538345A (en) * | 1993-10-19 | 1996-07-23 | Idemitsy Petrochemical Co., Ltd. | Easy-open, hermetically-sealed, packaging bag |
US5701996A (en) * | 1994-05-17 | 1997-12-30 | Idemitsu Petrochemical Co., Ltd. | Snap-fastener bag |
US5887980A (en) * | 1994-04-11 | 1999-03-30 | Reynolds Consumer Products Inc. | Closure arrangement having peelable seal |
US6210038B1 (en) * | 1998-11-03 | 2001-04-03 | Reynolds Consumer Products, Inc. | Closure arrangement having a peelable seal indicator |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2750382B2 (en) * | 1988-11-29 | 1998-05-13 | 出光石油化学株式会社 | Articulators and packaging bags with articulators |
JP2001315806A (en) * | 2000-03-01 | 2001-11-13 | Reynolds Consumer Prod Inc | Reclosable zipper having sealant layer and peel seal, package and method |
-
2003
- 2003-11-04 EP EP03025200A patent/EP1418132A1/en not_active Withdrawn
- 2003-11-04 US US10/700,900 patent/US20040091185A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4710968A (en) * | 1985-09-11 | 1987-12-01 | First Brands Corporation | Trident interlocking closure profile configuration |
US4925316A (en) * | 1986-08-11 | 1990-05-15 | Minigrip, Inc. | Reclosable bag having an outer reclosable zipper type closure and inner non-reclosable closure |
US5525363A (en) * | 1991-05-31 | 1996-06-11 | Kraft Foods, Inc. | Cheese pouch having easy opening and reclosing characteristics |
US5140796A (en) * | 1991-11-04 | 1992-08-25 | Pope William K | Closure tool for resealable bags |
US5538345A (en) * | 1993-10-19 | 1996-07-23 | Idemitsy Petrochemical Co., Ltd. | Easy-open, hermetically-sealed, packaging bag |
US5887980A (en) * | 1994-04-11 | 1999-03-30 | Reynolds Consumer Products Inc. | Closure arrangement having peelable seal |
US5701996A (en) * | 1994-05-17 | 1997-12-30 | Idemitsu Petrochemical Co., Ltd. | Snap-fastener bag |
US6210038B1 (en) * | 1998-11-03 | 2001-04-03 | Reynolds Consumer Products, Inc. | Closure arrangement having a peelable seal indicator |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040091186A1 (en) * | 2002-11-07 | 2004-05-13 | Daiwa Gravure Co. Ltd. | Packaging bag with zipper |
US7946003B2 (en) | 2005-11-01 | 2011-05-24 | Reynolds Consumer Products, Inc. | Package closure and method |
US20070116386A1 (en) * | 2005-11-01 | 2007-05-24 | Sprague Paul A | Package closure and method |
US7784160B2 (en) | 2007-03-16 | 2010-08-31 | S.C. Johnson & Son, Inc. | Pouch and airtight resealable closure mechanism therefor |
US8827556B2 (en) | 2007-03-16 | 2014-09-09 | S.C. Johnson & Son, Inc. | Pouch and airtight resealable closure mechanism therefor |
US8176604B2 (en) | 2007-03-16 | 2012-05-15 | S.C. Johnson & Son, Inc. | Pouch and airtight resealable closure mechanism therefor |
US7886412B2 (en) | 2007-03-16 | 2011-02-15 | S.C. Johnson Home Storage, Inc. | Pouch and airtight resealable closure mechanism therefor |
US7946766B2 (en) | 2007-06-15 | 2011-05-24 | S.C. Johnson & Son, Inc. | Offset closure mechanism for a reclosable pouch |
US7887238B2 (en) | 2007-06-15 | 2011-02-15 | S.C. Johnson Home Storage, Inc. | Flow channels for a pouch |
US7967509B2 (en) | 2007-06-15 | 2011-06-28 | S.C. Johnson & Son, Inc. | Pouch with a valve |
US7874731B2 (en) | 2007-06-15 | 2011-01-25 | S.C. Johnson Home Storage, Inc. | Valve for a recloseable container |
US8231273B2 (en) | 2007-06-15 | 2012-07-31 | S.C. Johnson & Son, Inc. | Flow channel profile and a complementary groove for a pouch |
US7857515B2 (en) | 2007-06-15 | 2010-12-28 | S.C. Johnson Home Storage, Inc. | Airtight closure mechanism for a reclosable pouch |
US20110293204A1 (en) * | 2010-01-28 | 2011-12-01 | Illinois Tool Works Inc. | Zipper profiles with foamed sealant |
US9033578B2 (en) | 2011-03-30 | 2015-05-19 | Lee Rachel Ostroy | Reusable food storage bag and process for making a reusable storage bag |
US20160083148A1 (en) * | 2013-10-22 | 2016-03-24 | Mupack Ozaki Corporation | Slider structure |
US9481494B2 (en) * | 2013-10-22 | 2016-11-01 | Mupack Ozaki Co., Ltd. | Slider structure |
CN108697209A (en) * | 2016-01-20 | 2018-10-23 | 泰斯勤·汤姆斯 | Modified slide fastener block system |
Also Published As
Publication number | Publication date |
---|---|
EP1418132A1 (en) | 2004-05-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: DAIWA GRAVURE CO., LTD., JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SHIBATA, YUKIHIKO;REEL/FRAME:014685/0702 Effective date: 20031031 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |