CA1291109C - Liquid absorbing and immobilizing packet - Google Patents
Liquid absorbing and immobilizing packetInfo
- Publication number
- CA1291109C CA1291109C CA000536908A CA536908A CA1291109C CA 1291109 C CA1291109 C CA 1291109C CA 000536908 A CA000536908 A CA 000536908A CA 536908 A CA536908 A CA 536908A CA 1291109 C CA1291109 C CA 1291109C
- Authority
- CA
- Canada
- Prior art keywords
- liquid
- envelope
- degradable
- immobilizing
- absorbing
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
Classifications
-
- 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
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
- B65D81/26—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators
- B65D81/264—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators for absorbing liquids
-
- 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
-
- 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.]
-
- 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
- Y10T428/23—Sheet including cover or casing
- Y10T428/239—Complete cover or casing
-
- 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
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T428/24843—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] with heat sealable or heat releasable adhesive 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
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T428/24851—Intermediate layer is discontinuous or differential
-
- 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
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T428/24926—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including ceramic, glass, porcelain or quartz layer
Abstract
LIQUID ABSORBING AND IMMOBILIZING PACKET
ABSTRACT OF THE DISCLOSURE
A packet for absorbing and immobilizing a liquid including an envelope which is degradable in the liquid and a liquid absorbing and immobilizing material in the envelope.
ABSTRACT OF THE DISCLOSURE
A packet for absorbing and immobilizing a liquid including an envelope which is degradable in the liquid and a liquid absorbing and immobilizing material in the envelope.
Description
The present invention relates to a packet of material for absorbing and immobilizing liquid after the liquid comes in contact therewith.
By way of background, the liquid absorbing and immobilizing character of sodium polyacrylate is known. A small amount of this material will absorb and immobilize a relatively large quantity of an aqueous solution by forming a gel-like material when it reacts therewith.
It is the object of the present invention to provide a packet for insertion between an outer container and an inner container of liquid for absorbing and immobilizing liquid which may spill from the inner container, thereby tending to prevent leakage through the outer container. Other objects and attendant advantages of the present invention readily will be perceived hereafter.
The present invention relates to a packet for absorbing and immobilizing a liquid comprising an envelope which is degradable in said llquid, and a liquid absorbing and immobilizing material in sàid envelope for absorbing and immobilizing said liquid aEter said~degradable envelope degrades after being contacted by said liquid. ~
The present invention also relates to an absorbent packet for use~with an outer container having an inner container with liquid~ from~ whi~ch sa~ld liquid can leak, the absorbent packet being~loca~ted between said inner and outer containers Eor absorbing and immob~llizing said llquid within said outer container~ in~ the~event of leakage of said liquid from said inner container compri~sing a degradable envelope which is degradable in said liquid,~and~a~llquid absorbing and immobilizing material in said envelope for ab~sorbing and immobilizing said liquid :
~.2gllQ~
after said degradable envelope degrades after being contacted by said liquid.
The various aspects of the present invention will be more fully understood when the following portions of the specification are read in conjunction with the accompanying drawings wherein:
FIG. 1 is a perspective view of the absorbent packet of the present invention;
FIG. 2 is a cross sectional view taken substantially along line 2-2 of FIG. l;
FIG. 3 is a fragmentary cross sectional view taken subtantially along line 3-3 of FIG. l;
FIG. 3A is a fragmentary cross sectional view taken substantially along line 3A-3A of F~G. 3;
FIG. 4 is a fraqmentary enlarged cross sectional view of the material which:comprises the envelope;
FIG. 5 is a side elevational view, partially in cross section, showing an inner container of liquid located within an outer container with the degradable packet of absorbing and immobilizing material located therebetween while the inner container is intact; and FIG. 6 is a view similar to FIG. 5 but showing a rupture in the inner container and the liquid which leaked therefrom solidified after the degrading of the packet envelope.
~ ;The packe~t 10 for absorbing and immobilizing a liquid includes an envelope:ll of material which is degradable in the :
liquid:and a liquid absorbing and immobilizing material 12 contained withln envelope 11. ~The envelope 11 is formed of ~-sheet material which lg heat-seaIed at end seams 13 and alony a central seam 14. Preferably the sheet material from which :
~L29~109 envelope ll is made includes a degradable starch paper 15 having a polyvinyl acetate coating 17 over its entire surface. When the envelope ll is fabricated, the starch paper 15 is the outer layer and the polyvinyl acetate coating is the inner layer. It is the polyvinyl acetate coating portions of envelope 11, when placed face-to-face which permits the seams 13 and 14 to be formed by heat-sealing, as depicted in FIG. 3A.
In the present instance the degradable outer layer 15 of envelope ll is a starch paper which is degradable in water.
However, the envelope may be of any other liquid-degradable material. The liquid absorbing and immobilizing material 12 is sodium polyacrylate having the formula (C3H3O2Na)n. It is obtainable under the trademark WATER LOCK J-550 from Grain Processing Corporatlon. This material is a ree-flowing powder having the ability to absorb or immobilize large volumes of aqueous solations incIuding dilute alkalis, dilute acids and body fluids. The material 12 will absorb and immobilize 650 milliliters of water per gram~of;material or 75 milliliters of L~ sodium chloride solution per gram of material. ~he material 12 wilI perform the foregoing absorbing and Immobilizing in about 25 seconds and added to this is the~time which is required Eor the envelope 11 to degrade which is about another 30 seconds. Thus,~when the packet 10 lS lmmersed in liquids of the oregolng type, the ~sbsorblng and immobilizing process will take approximately one~ minute.
~ ~ In~FIGS. S and 6, one mode of operation of packet 10 is disclosed. In this~i;nstance, packet 10 is inserted into outer aontainer~l9;,~ whlch may be of any suitable material, such :
as paper, csrdboard,~wood or plastlc, and it is located outside of inner frangible~container 20~which may be of any suitable , . .... :
~ 2911Q9 material, such as glass, ceramic or plastic. Inner container 20 includes a cap 21 which holds the liquid 22 sealed within inner container 20. While packet 10 is shown located between the sides of containers 19 and 20, it is preferable that it be located between the bottom 23 of inner container 20 and the bottom 24 of outer container 19 so tha~ if there is leakage, the envelope 11 will start to degrade at the earliest possible time.
While outer container 19 is shown in cross section in FIGS. 5 and 6, it will be appreciated that it completely surrounds inner container 20 to the extent that it will tend to capture any liquid which leaks from the inner container.
If for any reason inner container 20 should rupture, as by a crack 25 (FIG. 6) so that liquid 22 will flow there-through, the envelope 11 of packet 10 will start to degrade upon contact with the liquid. After it has degraded sufficiently, the material 12 will react with the liquid to absorb and immobilize it by forming a gel-like substance 27. In FIG. 6, the formation of the gel will act as a seal so that it will plug the crack 25, thereby causing a part of liquid 22 to be retained in its liquid form within container 20. If the container 20 broke to a greater extent, that is, more than a crack, so that all of the liquid 22 tended to flow therefrom, the entire amount of llquid would be formed into a gel-like substance, such as 27, provided that the outer container 19 could retain the liquid , therein for a sufficient time for the envelope 11 to degrade and for the solidification to occur. In this respect, it is prefer-able that the outer container 19 be sufficiently leak-resistant so that the foregolng could occur.
It will be appreciated that the amount of material 12 which is required within envelope 11 ~or any particular ~L291~9 situation will depend on the volume of inner container 20, that is, envelope 11 should contain enough materiaL 12 to completely absorb and immobilize the entire amount of liquid.
While the material of envelope 11 has been shown as including a coating 17 on its entire surface, it will be appreciated that in certain circumstances this coating for e~fecting heat-sealing need be applied to only select portions of the material 15 which are to be sealed to each other.
~urthermore, while the coating 17 has been described as polyvinyl acetate, it will be appreciated that it can comprise any other material which lends itself to heat-sealing or to other types of sealing during the formation of envelope 11. It is further contemplated that the degradable envelope 11 need not be a material which is completely or partially coated, but may be an uncoated material from which the envelope is formed by stitching or other means of fabrication.
While the present disclosure has been directed specially to an absorbing and immobilizing material which reacts with aqueous solutions, it will be appreciated that the principles of the present invention include the use of absorbing and immobilizing materials which operate with other liquids and the envelope may comprise other materials which will degrade in such other solutions;.
Whlle a specif lC example has been shown in FIGS. 5 and 6, it will be appreciated that packets, such as 10, may be placed in conti~uous~relatlonshlp to a liquid-containing container which may not be enclosed within an outer containerj to absorb and immob1lize~leaks therefrom, provided that leaking liquid can be res;trained~for a sufficient time for solidifi-cation to occur. ~
: :
:
~l2~Q~
An actual packet has been fabricated containing 1.5grams of sodium polyacryla~e with the envelope being abricated of starch paper having a weight of 45 grams per square meter and with the polyvinyl acetate being coated to a depth of 1.5 mils.
The preferred size of the foregoing envelope 11 is 1 1/4 inches times 2 inches.
While preferred e,mbodiments of the present invention have been disclosed, it will be appreciated that it is not limited thereto but rnay be otherwise embodied within the scope of the following claims.
;
~ 7
By way of background, the liquid absorbing and immobilizing character of sodium polyacrylate is known. A small amount of this material will absorb and immobilize a relatively large quantity of an aqueous solution by forming a gel-like material when it reacts therewith.
It is the object of the present invention to provide a packet for insertion between an outer container and an inner container of liquid for absorbing and immobilizing liquid which may spill from the inner container, thereby tending to prevent leakage through the outer container. Other objects and attendant advantages of the present invention readily will be perceived hereafter.
The present invention relates to a packet for absorbing and immobilizing a liquid comprising an envelope which is degradable in said llquid, and a liquid absorbing and immobilizing material in sàid envelope for absorbing and immobilizing said liquid aEter said~degradable envelope degrades after being contacted by said liquid. ~
The present invention also relates to an absorbent packet for use~with an outer container having an inner container with liquid~ from~ whi~ch sa~ld liquid can leak, the absorbent packet being~loca~ted between said inner and outer containers Eor absorbing and immob~llizing said llquid within said outer container~ in~ the~event of leakage of said liquid from said inner container compri~sing a degradable envelope which is degradable in said liquid,~and~a~llquid absorbing and immobilizing material in said envelope for ab~sorbing and immobilizing said liquid :
~.2gllQ~
after said degradable envelope degrades after being contacted by said liquid.
The various aspects of the present invention will be more fully understood when the following portions of the specification are read in conjunction with the accompanying drawings wherein:
FIG. 1 is a perspective view of the absorbent packet of the present invention;
FIG. 2 is a cross sectional view taken substantially along line 2-2 of FIG. l;
FIG. 3 is a fragmentary cross sectional view taken subtantially along line 3-3 of FIG. l;
FIG. 3A is a fragmentary cross sectional view taken substantially along line 3A-3A of F~G. 3;
FIG. 4 is a fraqmentary enlarged cross sectional view of the material which:comprises the envelope;
FIG. 5 is a side elevational view, partially in cross section, showing an inner container of liquid located within an outer container with the degradable packet of absorbing and immobilizing material located therebetween while the inner container is intact; and FIG. 6 is a view similar to FIG. 5 but showing a rupture in the inner container and the liquid which leaked therefrom solidified after the degrading of the packet envelope.
~ ;The packe~t 10 for absorbing and immobilizing a liquid includes an envelope:ll of material which is degradable in the :
liquid:and a liquid absorbing and immobilizing material 12 contained withln envelope 11. ~The envelope 11 is formed of ~-sheet material which lg heat-seaIed at end seams 13 and alony a central seam 14. Preferably the sheet material from which :
~L29~109 envelope ll is made includes a degradable starch paper 15 having a polyvinyl acetate coating 17 over its entire surface. When the envelope ll is fabricated, the starch paper 15 is the outer layer and the polyvinyl acetate coating is the inner layer. It is the polyvinyl acetate coating portions of envelope 11, when placed face-to-face which permits the seams 13 and 14 to be formed by heat-sealing, as depicted in FIG. 3A.
In the present instance the degradable outer layer 15 of envelope ll is a starch paper which is degradable in water.
However, the envelope may be of any other liquid-degradable material. The liquid absorbing and immobilizing material 12 is sodium polyacrylate having the formula (C3H3O2Na)n. It is obtainable under the trademark WATER LOCK J-550 from Grain Processing Corporatlon. This material is a ree-flowing powder having the ability to absorb or immobilize large volumes of aqueous solations incIuding dilute alkalis, dilute acids and body fluids. The material 12 will absorb and immobilize 650 milliliters of water per gram~of;material or 75 milliliters of L~ sodium chloride solution per gram of material. ~he material 12 wilI perform the foregoing absorbing and Immobilizing in about 25 seconds and added to this is the~time which is required Eor the envelope 11 to degrade which is about another 30 seconds. Thus,~when the packet 10 lS lmmersed in liquids of the oregolng type, the ~sbsorblng and immobilizing process will take approximately one~ minute.
~ ~ In~FIGS. S and 6, one mode of operation of packet 10 is disclosed. In this~i;nstance, packet 10 is inserted into outer aontainer~l9;,~ whlch may be of any suitable material, such :
as paper, csrdboard,~wood or plastlc, and it is located outside of inner frangible~container 20~which may be of any suitable , . .... :
~ 2911Q9 material, such as glass, ceramic or plastic. Inner container 20 includes a cap 21 which holds the liquid 22 sealed within inner container 20. While packet 10 is shown located between the sides of containers 19 and 20, it is preferable that it be located between the bottom 23 of inner container 20 and the bottom 24 of outer container 19 so tha~ if there is leakage, the envelope 11 will start to degrade at the earliest possible time.
While outer container 19 is shown in cross section in FIGS. 5 and 6, it will be appreciated that it completely surrounds inner container 20 to the extent that it will tend to capture any liquid which leaks from the inner container.
If for any reason inner container 20 should rupture, as by a crack 25 (FIG. 6) so that liquid 22 will flow there-through, the envelope 11 of packet 10 will start to degrade upon contact with the liquid. After it has degraded sufficiently, the material 12 will react with the liquid to absorb and immobilize it by forming a gel-like substance 27. In FIG. 6, the formation of the gel will act as a seal so that it will plug the crack 25, thereby causing a part of liquid 22 to be retained in its liquid form within container 20. If the container 20 broke to a greater extent, that is, more than a crack, so that all of the liquid 22 tended to flow therefrom, the entire amount of llquid would be formed into a gel-like substance, such as 27, provided that the outer container 19 could retain the liquid , therein for a sufficient time for the envelope 11 to degrade and for the solidification to occur. In this respect, it is prefer-able that the outer container 19 be sufficiently leak-resistant so that the foregolng could occur.
It will be appreciated that the amount of material 12 which is required within envelope 11 ~or any particular ~L291~9 situation will depend on the volume of inner container 20, that is, envelope 11 should contain enough materiaL 12 to completely absorb and immobilize the entire amount of liquid.
While the material of envelope 11 has been shown as including a coating 17 on its entire surface, it will be appreciated that in certain circumstances this coating for e~fecting heat-sealing need be applied to only select portions of the material 15 which are to be sealed to each other.
~urthermore, while the coating 17 has been described as polyvinyl acetate, it will be appreciated that it can comprise any other material which lends itself to heat-sealing or to other types of sealing during the formation of envelope 11. It is further contemplated that the degradable envelope 11 need not be a material which is completely or partially coated, but may be an uncoated material from which the envelope is formed by stitching or other means of fabrication.
While the present disclosure has been directed specially to an absorbing and immobilizing material which reacts with aqueous solutions, it will be appreciated that the principles of the present invention include the use of absorbing and immobilizing materials which operate with other liquids and the envelope may comprise other materials which will degrade in such other solutions;.
Whlle a specif lC example has been shown in FIGS. 5 and 6, it will be appreciated that packets, such as 10, may be placed in conti~uous~relatlonshlp to a liquid-containing container which may not be enclosed within an outer containerj to absorb and immob1lize~leaks therefrom, provided that leaking liquid can be res;trained~for a sufficient time for solidifi-cation to occur. ~
: :
:
~l2~Q~
An actual packet has been fabricated containing 1.5grams of sodium polyacryla~e with the envelope being abricated of starch paper having a weight of 45 grams per square meter and with the polyvinyl acetate being coated to a depth of 1.5 mils.
The preferred size of the foregoing envelope 11 is 1 1/4 inches times 2 inches.
While preferred e,mbodiments of the present invention have been disclosed, it will be appreciated that it is not limited thereto but rnay be otherwise embodied within the scope of the following claims.
;
~ 7
Claims (17)
1. A packet for absorbing and immobilizing a relatively large amount of liquid comprising a degradable envelope which is degradable in said liquid, and a relatively small amount of liquid absorbing and immobilizing material means in said envelope for immobilizing said liquid by forming a gel-like substance on absorbing said relatively large amount of liquid after said degradable envelope degrades after being contacted by said liquid.
2. A packet as set forth in claim 1 wherein said liquid includes water and wherein said liquid absorbing and immobili-zing material means is sodium polyacrylate.
3. A packet as set forth in claim 1 wherein said envelope includes a layer of starch paper with a coating of polyvinyl acetate.
4. A packet as set forth in claim 1 wherein said envelope includes a layer of material which is degradable in said liquid, and a coating of material on said layer of material which permits said layer of material to be sealed in the form of said envelope.
5. In an outer container having an inner container with a relatively large amount of liquid from which said liquid can leak, an absorbent packet located between said inner and outer containers for absorbing and immobilizing said relatively large amount of liquid within said outer container in the event of leakage of said relatively large amount of liquid from said inner container comprising a degradable envelope which is degradable in said liquid, and a relatively small amount of liquid absorbing and immobilizing material means in said envelope for immobilizing said liquid by forming a gel-like substance on absorbing said relatively large amount of liquid after said degradable envelope degrades after being contacted by said liquid.
6. In an outer container having an inner container with liquid from which said liquid can leak as set forth in claim 5 wherein said envelope includes an outer layer of material which is degradable in said liquid and a sealing coating on the inner surface of said outer layer of material.
7. In an outer container having an inner container with liquid from which said liquid can leak as set forth in claim 5 wherein said envelope includes a layer of material which is degradable in said liquid, and a coating of material on said layer of material which permits said layer of material to be sealed in the form of said envelope.
8. In an outer container having an inner container with liquid from which said liquid can leak as set forth in claim 7 wherein said layer of material comprises starch paper, and wherein said coating of material comprises polyvinyl acetate.
9. In an outer container having an inner container with liquid from which said liquid can leak as set forth in claim 5 wherein said absorbing and immobilizing material means is sodium polyacrylate.
10. In an outer container having an inner container with liquid from which said liquid can leak as set forth in claim 9 wherein said envelope includes a layer of material which is degradable in said liquid, and a coating of material on said layer of material which permits said layer of material to be sealed in the form of said envelope.
11. In an outer container having an inner container with liquid from which said liquid can leak as set forth in claim 10 wherein said coating of material is on the entire surface of said layer of material.
12. In an outer container having an inner container with liquid from which said liquid can leak as set forth in claim 11 wherein said layer of material comprises starch paper, and wherein said coating comprises polyvinyl acetate.
13. A packet for absorbing and immobilizing a liquid comprising a degradable envelope which is degradable in said liquid, and a first volume of liquid absorbing and immobilizing material means in said degradable envelope for absorbing and immobilizing a much larger second volume of said liquid after said degradable envelope degrades after contact with said liquid.
14. A packet as set forth in claim 13 wherein said degradable envelope includes a layer of degradable paper, and a sealing coating on said layer of degradable paper which permits said layer of degradable paper to be sealed in the form of an envelope.
15. In an outer container having an inner container with liquid from which said liquid can leak, an absorbent packet located between said inner and outer containers for absorbing and immobilizing said liquid within said outer container in the event of leakage of said liquid from said inner container comprising a degradable envelope which is degradable in said liquid, and a first volume of liquid absorbing and immobilizing material means in said envelope for absorbing and immobilizing a much larger second volume of said liquid after said degradable envelope degrades after being contacted by said liquid.
16. A packet for absorbing and immobilizing a liquid comprising an envelope which is degradable in said liquid, and a liquid absorbing and immobilizing material in said envelope for absorbing and immobilizing said liquid after said degradable envelope degrades after being contacted by said liquid.
17. In an outer container having an inner container with liquid from which said liquid can leak, an absorbent packet located between said inner and outer containers for absorbing and immobilizing said liquid within said outer container in the event of leakage of said liquid from said inner container comprising a degradable envelope which is degradable in said liquid, and a liquid absorbing and immobilizing material in said envelope for absorbing and immobilizing said liquid after said degradable envelope degrades after being contacted by said liquid.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/863,722 US4749600A (en) | 1986-05-16 | 1986-05-16 | Liquid absorbing and immobilizing packet |
| US863,722 | 1986-05-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1291109C true CA1291109C (en) | 1991-10-22 |
Family
ID=25341645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000536908A Expired - Lifetime CA1291109C (en) | 1986-05-16 | 1987-05-12 | Liquid absorbing and immobilizing packet |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4749600A (en) |
| CA (1) | CA1291109C (en) |
Families Citing this family (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5407685A (en) * | 1986-02-06 | 1995-04-18 | Steris Corporation | Controlled oxygen/anti-microbial release films |
| US5284621A (en) * | 1987-10-07 | 1994-02-08 | Kaufman Jack W | Waste fluid disposal aid |
| US4802574A (en) * | 1987-12-01 | 1989-02-07 | Yosuke Akiba | Absorbent for a gas preservative atomosphere |
| JPH0613729Y2 (en) * | 1989-03-03 | 1994-04-13 | 幸雄 川西 | Drug container |
| US5356678A (en) * | 1989-04-24 | 1994-10-18 | American Colloid Company | Pouch for absorbing fluid |
| US4968297A (en) * | 1989-05-09 | 1990-11-06 | Iomec, Inc. | Iontophoretic electrode with solution containment system |
| US4996727A (en) * | 1989-07-28 | 1991-03-05 | Guardian Products, Inc. | Disposable waste bag |
| US5092858A (en) * | 1990-03-20 | 1992-03-03 | Becton, Dickinson And Company | Liquid gelling agent distributor device |
| US5069694A (en) * | 1990-07-02 | 1991-12-03 | Multiform Desiccants, Inc. | Packet for compound treatment of gases |
| DK0495230T3 (en) * | 1990-12-27 | 1997-04-21 | Hoechst Ag | Recyclable bowl-shaped container with liquid absorber system |
| US5401261A (en) * | 1992-06-25 | 1995-03-28 | Milieu Systems Corp. | Containment vessels for handling and disposing of liquid waste |
| US5380308A (en) * | 1992-06-25 | 1995-01-10 | Milieu Systems Corp. | Containment vessels for liquid waste |
| JPH09506278A (en) * | 1993-12-09 | 1997-06-24 | オービーエフ・インダストリーズ・インコーポレイテッド | Methods and compositions for sterilizing and solidifying liquid waste |
| US5830543A (en) * | 1994-05-30 | 1998-11-03 | Nippon Shokubai Co., Ltd. | Gelling material for aqueous fluids |
| US5529177A (en) * | 1994-08-26 | 1996-06-25 | Podd; Stephen D. | Humidity control device for container or container liner |
| US5862494A (en) * | 1995-09-01 | 1999-01-19 | Mcdonnell; John E. | Method for entrapping and minimizing moisture bearing low-level radioactive and mixed waste material |
| US5773105A (en) * | 1996-03-07 | 1998-06-30 | United Catalysts Inc. - Desiccants | Absorbent packet |
| US6202224B1 (en) | 1998-10-09 | 2001-03-20 | Ronald A. Freeman | Expandable and spill-proof container and method for disposing of liquids |
| US6523681B1 (en) | 2000-02-25 | 2003-02-25 | Technicor, Inc. | Absorbent/adsorbent pads |
| US6863949B2 (en) * | 2000-08-03 | 2005-03-08 | Va-Q-Tec Ag | Foil-enveloped evacuated thermal insulation elements |
| US6797857B2 (en) | 2001-05-24 | 2004-09-28 | Deroyal Industries | Solidifier for a liquid |
| US6998871B2 (en) * | 2002-11-29 | 2006-02-14 | Sigmatel, Inc. | Configurable integrated circuit for use in a multi-function handheld device |
| US20060173430A1 (en) * | 2005-02-03 | 2006-08-03 | Baosheng Lee | Fluid-absorbing products comprising superabsorbent material in a water-soluble pouch and methods of using the same |
| US20070020414A1 (en) * | 2005-07-21 | 2007-01-25 | Sud-Chemie Inc., | Absorbent article |
| US9739023B2 (en) | 2012-04-15 | 2017-08-22 | Harbo Technologies Ltd. | Rapid-deployment oil spill containment boom and method of deployment |
| US9533081B1 (en) * | 2013-03-11 | 2017-01-03 | Quint Barefoot | Wound canister waste solidification system |
| DK3207184T3 (en) | 2014-10-14 | 2019-11-25 | Harbo Tech Ltd | Spill Containment Barrier |
| US11141763B1 (en) | 2015-09-29 | 2021-10-12 | Stewart Superabsorbents, Llc | System for solidification of pharmaceutical waste |
| USD852317S1 (en) | 2017-07-24 | 2019-06-25 | Harbo Technologies Ltd. | Containment boom |
| US11078640B2 (en) | 2017-07-24 | 2021-08-03 | Harbo Technologies Ltd. | Oil spill spread prevention by immediate containment |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2283867A (en) * | 1939-12-19 | 1942-05-19 | Stokes Machine Co | Packaging and preserving dried biologicals, pharmaceuticals, and the like |
| GB711186A (en) * | 1952-03-28 | 1954-06-23 | Salter & Co Ltd G | Improvements relating to the packaging of metal and other articles |
| FR1362935A (en) * | 1962-07-11 | 1964-06-05 | Gevaert Photo Prod Nv | Capsules containing water and aqueous phase compounds or hydrophilic substances |
| US3990872A (en) * | 1974-11-06 | 1976-11-09 | Multiform Desiccant Products, Inc. | Adsorbent package |
| US4124116A (en) * | 1977-02-15 | 1978-11-07 | Mccabe Jr Edward G | Liquid absorbing sectional pack |
| DE3034169A1 (en) * | 1980-09-11 | 1982-04-15 | Rudolf 6670 St Ingbert Marx | WATER ADSORBING INSERT FOR FOOD PACKS |
| NZ206331A (en) * | 1982-11-26 | 1986-05-09 | Unilever Plc | Liquid-permeable,flexible,sheet-like articles |
-
1986
- 1986-05-16 US US06/863,722 patent/US4749600A/en not_active Expired - Lifetime
-
1987
- 1987-05-12 CA CA000536908A patent/CA1291109C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US4749600A (en) | 1988-06-07 |
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Legal Events
| Date | Code | Title | Description |
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| MKEX | Expiry |