GB2193925A - improvements relating to WC-disposable sheet material - Google Patents

improvements relating to WC-disposable sheet material Download PDF

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Publication number
GB2193925A
GB2193925A GB08719417A GB8719417A GB2193925A GB 2193925 A GB2193925 A GB 2193925A GB 08719417 A GB08719417 A GB 08719417A GB 8719417 A GB8719417 A GB 8719417A GB 2193925 A GB2193925 A GB 2193925A
Authority
GB
United Kingdom
Prior art keywords
adhesive
film
webs
polyvinyl alcohol
sheet material
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.)
Granted
Application number
GB08719417A
Other versions
GB2193925B (en
GB8719417D0 (en
Inventor
Bruce Samways
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ENAK Ltd
Original Assignee
ENAK Ltd
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
Priority claimed from GB868620068A external-priority patent/GB8620068D0/en
Priority claimed from GB868620145A external-priority patent/GB8620145D0/en
Application filed by ENAK Ltd filed Critical ENAK Ltd
Publication of GB8719417D0 publication Critical patent/GB8719417D0/en
Publication of GB2193925A publication Critical patent/GB2193925A/en
Application granted granted Critical
Publication of GB2193925B publication Critical patent/GB2193925B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
    • 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
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/22—Layered products comprising a layer of synthetic resin characterised by the use of special additives using plasticisers
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B2323/00—Polyalkenes
    • B32B2323/04—Polyethylene
    • 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
    • B32B2327/00—Polyvinylhalogenides
    • B32B2327/06—PVC, i.e. polyvinylchloride
    • 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

Abstract

A 30-40 micron water-soluble polyvinyl alcohol film having defined characteristics is laminated to a 12-22 micron water-insoluble PE or PVC film to form a WC-disposable sheet material particularly useful for fabricating into ostomy or incontinence bags.

Description

SPECIFICATION Improvements relating to WC-disposable sheet material This invention relates to improved WC-disposable sheet material, a method for its production, and to containers made from the material.
The specification of our UK Patent No. 2 083 762B describes composite sheet materials useful for the manufacture of WC-disposable containers such as ostomy bags and incontinence bags. The properties desirable in such a composite sheet material are WC-disposability, odour-proofness, flexibility, bursting strength, freedom from noise generated when worn, economy in cost of materials, and economy in cost of manufacture.
We have discovered that the optimum combination of the above desirable properties is possessed by a WC-disposable sheet material according to the present invention which comprises a cold-water soluble ply having a thickness of from 30 to 40 microns laminated to a water-insoluble ply having a thickness of from 12 to 22 microns, the cold-water soluble ply being formed from a film of polyvinyl alcohol containing by weight from 13 to 20% of a plasticizer, preferably selected from glycerol, ethylene glycol, polyethylene glycol and polyetherpolyol, a release agent and a wetting agent, the film having a disintegration time in water at 20"C of from 14 to 22 seconds, and the water-insoluble ply being formed of a film of low density polyethylene or polyvinyl chloride.
According to the present invention there is also provided a method of forming a composite WC-disposable sheet material which method comprises coating with a layer of isocyanate/urethane adhesive a face of a web of the above-defined film of polyethylene or polyvinyl chloride film or a face of a web of the above-defined polyvinyl alcohol film, the face preferably having previously been subjected to a surface treatment to improve its receptivity to the adhesive, and bringing the coated face of one of said webs into contact with a face of the other of said webs, which has preferably also been previously treated to improve its receptivity to the adhesive, under a pressure sufficient to effect intimate contact between the adhesive and said face of the water-soluble film, and controlling the temperature of the combined web for a period sufficient to effect setting and initial curing of the adhesive.
In a preferred procedure the water-soluble web is subjected to an in-line corona discharge surface treatment to improve the receptivity to adhesive immediately before being brought into contact with the adhesive and then led together with the insoluble web through a roller nip in known manner to laminate the webs. The combined webs are then passed through an oven to promote setting of the adhesive, and rewound into a mill roll which is retained for at least 24 hours to ensure that curing of the adhesive is complete before slitting the web into reels.
The preferred thickness of the polyvinyl alcohol ply is 35 microns and the preferred plasticizer content 19% by weight. To facilitate handling of the water-soluble sheet material the polyvinyl alcohol preferably incorporates wetting agent in an amount of up to 0.25% by weight and release agent in an amount of up to 0.35% by weight. Preferably, again, the thickness of the water-insoluble ply is from 18 to 20 microns.
The adhesive is desirably a freshly mixed twopart adhesive of the isocyanate/urethane type, and the treatment applied to the surface of each film that is to come into contact with the adhesive is desirably a corona discharge treatment.
Although the composite sheet material of the present invention may be used in sheet form for certain purposes, for example as a bed pan liner, after having been cut to a suitable size, its characteristics are fully utilised when the edge portions of one or more panels thereof are heat-sealed to fabricate a WC-disposable container. In particular it has been found that when the container is used in a closed condition, as for example when it is an ostomy pouch worn attached to the human body, a container made from a sheet material according to the present invention has a greater bursting strength, and so affords enhanced security to the user, whilst maintaining all other desirable properties.
Although the invention may be performed in a variety of ways, some particular examples thereof will now be described by way of example only.
EXAMPLE 1 A web of key-treated polyethylene, 19 microns thick and 1 metre wide supplied by Valentine Mann and Brown was coated with a freshly mixed adhesive of type Inmont PC 14001, suitably catalysed and at a viscosity of 21 seconds. A web of cold-water soluble polyvinyl alcohol, 35 microns thick supplied by Nippon Gohsei under Grade No. C200 and comprising 73% resin (88% hydrolysed), 19% plasticiser (polyethylene glycol and polyether polyol), 0.2% alkyl aryl polyether alcohol, 0.3% hydrogenated tallow amine acetate and 7.5% water was exposed to a corona discharge treatment at 3.5 amps current at a web speed of 55 m/minute, and the treated face led into contact with the adhesivecoated surface of the polyethylene in a roller nip under a load of 0.8 Kilograms/cm width. The combined web was rewound and retained for five days before unwinding and slitting into reels.
EXAMPLE 2 The above Example 1 was repeated but with the adhesive being applied to the corona discharge treated face of the polyvinyl alcohol web instead of to the polyethylene web.
It was found that containers made from this complex in the manner described in UK Patent No. 2 083 762 were WC-disposable, odourproof to faeces, adequately flexible and acceptably silent in use, and were able to withstand a bursting pressure of 200 mm Hg without rupture.

Claims (21)

1. A WC-disposable sheet material which comprises a cold-water soluble ply having a thickness of from 30 to 40 microns laminated to a water-insoluble ply having a thickness of from 12 to 22 microns, the cold-water soluble ply being formed from a film of polyvinyl alcohol containing by weight from 13 to 20% of a plasticizer, a release agent and a wetting agent, the film having a disintegration time in water at 20"C of from 14 to 22 seconds, and the water-insoluble ply being formed of a film of low density polyethylene or polyvinyl chloride.
2. A material as claimed in claim 1, in which the thickness of the polyvinyl alcohol film is about 35 microns.
3. A material as claimed in claim 1 or 2, in which the polyvinyl alcohol film has a plasticizer content of about 19% by weight.
4. A material as claimed in claim 1, 2 or 3, in which the plasticizer is selected from glycerol, ethylene glycol, polyethylene glycol and polyetherpolyol.
5. A material as claimed in any preceding claim, in which the polyvinyl alcohol incorporates wetting agent in an amount of up to 0.25% by weight.
6. A material as claimed in any preceding claim, in which the polyvinyl alcohol incorporates release agent in an amount of up to 0.35% by weight.
7. A material as claimed in any preceding claim, in which the thickness of the waterinsoluble film is from 18 to 20 microns.
8. A WC-disposable sheet material substantially as herein described in the foregoing Example 1 or 2.
9. A method of forming a composite WCdisposable sheet material, which comprises coating with a layer of isocyanate/urethane adhesive a face of a web of waterinsoluble polyethylene or polyvinyl chloride film having a thickness of from 12 to 22 microns or a face of a web of watersoluble film which has a thickness of from 12 to 22 microns, is formed of polyvinyl alcohol containing by weight from 13 to 20% plasticizer, a release agent and a wetting agent, and has a disintegration time in water at 20"C of from 14 to 22 seconds, bringing the coated face of one of said webs into contact with a face of the other of said webs under a pressure sufficient to effect intimate contact between the adhesive and said face of the other of said webs, and controlling the temperature of the combined web for a period sufficient to effect setting and initial curing of the adhesive.
10. A method as claimed in claim 9, wherein the face of said one of said webs to be coated with adhesive is previously subjected to a surface treatment to improve its receptivity thereto.
11. A method as claimed in claim 9 or 10, wherein the face of the other of said webs is previously subjected to a surface treatment to improve its receptivity to adhesive.
12. A method as claimed in claim 10 or 11, wherein the surface treatment is an in-line corona discharge surface treatment.
13. A method as claimed in claim 10 or in Claim 11 or 12 as appendant thereto, wherein the web to be coated with adhesive is subjected to the corona discharge treatment immediately before being coated and led together with the other of said webs through a nip to laminate the webs.
14. A material as claimed in any preceding claim, in which the adhesive is a two part adhesive of the isocyanate/urethane.
15. A method as claimed in any one of claims 9 to 14, wherein the film of polyvinyl alcohol is as defined in one or more of claims 2 to 6.
16. A method as claimed in any one of claims 9 to 15, wherein the water-insoluble film is as defined in claim 7.
17. A method as claimed in which the combined webs are passed through an oven to promote setting of the adhesive, and rewound into a mill roll which is retained for at least 24 hours to ensure that curing of the adhesive is complete before slitting the web into reels.
18. A method of forming a WC-disposable sheet material substantially as herein described in Example 1 or 2.
19. A WC-disposable sheet material when formed by a method as claimed in any one of claims 9 to 18.
20. A WC-disposable container formed from sheet material as claimed in any one of claims 1 to 8 or claim 19.
21. A container as claimed in claim 20, being an ostomy bag or incontinence bag.
GB8719417A 1986-08-18 1987-08-17 Improvements relating to wc-disposable sheet material Expired - Fee Related GB2193925B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB868620068A GB8620068D0 (en) 1986-08-18 1986-08-18 Wc-disposable sheet material
GB868620145A GB8620145D0 (en) 1986-08-19 1986-08-19 Wc-disposable sheet material

Publications (3)

Publication Number Publication Date
GB8719417D0 GB8719417D0 (en) 1987-09-23
GB2193925A true GB2193925A (en) 1988-02-24
GB2193925B GB2193925B (en) 1990-07-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB8719417A Expired - Fee Related GB2193925B (en) 1986-08-18 1987-08-17 Improvements relating to wc-disposable sheet material

Country Status (1)

Country Link
GB (1) GB2193925B (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4830187A (en) * 1986-12-22 1989-05-16 E. R. Squibb & Sons, Inc. Means for disposal of articles by flushing and ostomy pouches particularly suited for such disposal
US4930942A (en) * 1986-12-22 1990-06-05 E. R. Squibb & Sons, Inc. Method of disposal of articles by flushing
US5009648A (en) * 1989-03-22 1991-04-23 E. R. Squibb & Sons, Inc. Starch containing film ostomy pouches
WO1992001556A1 (en) * 1990-07-24 1992-02-06 Bhp Plastics Limited Composite polymeric articles
EP0589437A1 (en) * 1992-09-22 1994-03-30 Kimberly-Clark Corporation Compostable disposable films
EP0608801A1 (en) * 1993-01-25 1994-08-03 Aicello Chemical Company Limited Composite film bags for packaging
WO1994029104A1 (en) * 1993-06-15 1994-12-22 Ciba-Geigy Ag Packaging material comprising a water-soluble film
US5468526A (en) * 1993-09-20 1995-11-21 The Dow Chemical Company Multilayer barrier film for ostomy applications
US5509913A (en) * 1993-12-16 1996-04-23 Kimberly-Clark Corporation Flushable compositions
US5591144A (en) * 1992-12-01 1997-01-07 Welland Medical Limited Drainage bag
US5674578A (en) * 1994-12-27 1997-10-07 Hollister Incorporated Water soluble/dispersible multilayered film of high interlayer adhesive strength and collection pouches formed therefrom
US5691015A (en) * 1993-01-25 1997-11-25 Aicello Chemical Co., Ltd. Composite film bags for packaging
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
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
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
US6713140B2 (en) 2001-12-21 2004-03-30 Kimberly-Clark Worldwide, Inc. Latently dispersible barrier composite material
US6783826B2 (en) 2001-12-21 2004-08-31 Kimberly-Clark Worldwide, Inc. Flushable commode liner
WO2007085803A1 (en) 2006-01-24 2007-08-02 Welland Medical Limited Ostomy bag
WO2008014789A1 (en) * 2006-08-03 2008-02-07 Coloplast A/S Film plasticized with plasticizer having low vapour pressure
EP2289471A1 (en) 2009-08-28 2011-03-02 Welland Medical Limited Ostomy bag

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4930942A (en) * 1986-12-22 1990-06-05 E. R. Squibb & Sons, Inc. Method of disposal of articles by flushing
US4830187A (en) * 1986-12-22 1989-05-16 E. R. Squibb & Sons, Inc. Means for disposal of articles by flushing and ostomy pouches particularly suited for such disposal
US5009648A (en) * 1989-03-22 1991-04-23 E. R. Squibb & Sons, Inc. Starch containing film ostomy pouches
WO1992001556A1 (en) * 1990-07-24 1992-02-06 Bhp Plastics Limited Composite polymeric articles
EP0589437A1 (en) * 1992-09-22 1994-03-30 Kimberly-Clark Corporation Compostable disposable films
US5591144A (en) * 1992-12-01 1997-01-07 Welland Medical Limited Drainage bag
EP0608801A1 (en) * 1993-01-25 1994-08-03 Aicello Chemical Company Limited Composite film bags for packaging
US5691015A (en) * 1993-01-25 1997-11-25 Aicello Chemical Co., Ltd. Composite film bags for packaging
CN1047984C (en) * 1993-06-15 2000-01-05 诺瓦提斯公司 Packaging material comprising a water-soluble film
WO1994029104A1 (en) * 1993-06-15 1994-12-22 Ciba-Geigy Ag Packaging material comprising a water-soluble film
SG80515A1 (en) * 1993-06-15 2001-05-22 Ciba Geigy Ag Packaging material and packaging container for chemical preparation using water-soluble film
US5468526A (en) * 1993-09-20 1995-11-21 The Dow Chemical Company Multilayer barrier film for ostomy applications
US5509913A (en) * 1993-12-16 1996-04-23 Kimberly-Clark Corporation Flushable compositions
US5674578A (en) * 1994-12-27 1997-10-07 Hollister Incorporated Water soluble/dispersible multilayered film of high interlayer adhesive strength and collection pouches formed therefrom
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
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
US7364359B2 (en) 1995-10-09 2008-04-29 Kyodo Shiko Co., Ltd. Laminated film, method for production thereof, bag and package using the laminated film, and method for separation thereof
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
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
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
US6783826B2 (en) 2001-12-21 2004-08-31 Kimberly-Clark Worldwide, Inc. Flushable commode liner
US6713140B2 (en) 2001-12-21 2004-03-30 Kimberly-Clark Worldwide, Inc. Latently dispersible barrier composite material
WO2007085803A1 (en) 2006-01-24 2007-08-02 Welland Medical Limited Ostomy bag
WO2008014789A1 (en) * 2006-08-03 2008-02-07 Coloplast A/S Film plasticized with plasticizer having low vapour pressure
EP2289471A1 (en) 2009-08-28 2011-03-02 Welland Medical Limited Ostomy bag
EP2476398A1 (en) 2009-08-28 2012-07-18 Welland Medical Limited Ostomy bag

Also Published As

Publication number Publication date
GB2193925B (en) 1990-07-04
GB8719417D0 (en) 1987-09-23

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PCNP Patent ceased through non-payment of renewal fee