[특허]Flushable body waste collection pouch, pouch-in-pouch appliance using the same, and method relating thereto

[미국특허] Flushable body waste collection pouch, pouch-in-pouch appliance using the same, and method relating thereto 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B29C-065/02 B32B-037/04 C09J-005/10 C08J-005/04
출원번호	UP-0634656 (2006-12-06)
등록번호	US-7556707 (2009-07-15)
우선권정보	DK-200301550(2003-10-21)
발명자 / 주소	Giori, Claudio
출원인 / 주소	Hollister Incorporated
대리인 / 주소	Marshall, Gerstein & Borun LLP
인용정보	피인용 횟수 : 20 인용 특허 : 74

초록 ▼

A biodegradable and toilet-flushable body waste collection pouch, and an appliance and method in which such pouch constitutes the inner pouch of a peelably separable pouch-in-pouch system, are disclosed. The walls of the inner pouch are composed of an ultra-thin, heat-sealable film impermeable to body wastes comprising a plasticized biodegradable polyester or copolyester externally covered by a soft, porous, water-disintegratable cover layer of biodegradable and water-dispersible fibers. The cover layer and film are weakly bonded together in such a way as to avoid pinholes in the film that might otherwise be caused by the fibers. When used as the inner pouch of a pouch-in-pouch system, the film of the outer pouch is selected to have a melting temperature higher than that of the inner pouch film, with the result that a peripheral heat seal joining the walls of the two pouches together will allow the walls of the outer pouch to be peeled away without delaminating the film and cover layers of the inner pouch.

대표청구항 ▼

I claim: 1. A method of making a pouch-in-pouch body waste collection appliance having an outer pouch formed of odor-impermeable thermoplastic film with proximal and distal walls defining a chamber and a toilet-disposable inner pouch having proximal and distal walls and being disposed in said chamber; said proximal walls of said inner and outer pouches having aligned body waste receiving openings therein; said walls of said inner pouch being formed of a laminate composed of (a) a layer of thin heat-sealable thermoplastic film, and (b) a porous water-disintegratable cover layer of water-dispersible fibers attached to exterior surfaces of said inner pouch film; wherein said method comprises the steps of selecting a material for the film of said inner pouch having a melting temperature substantially lower than that of the material of said outer pouch; and joining together peripheral portions of said walls of said inner and outer pouches, and portions of said proximal walls of said inner and outer pouches surrounding said body waste receiving openings, by simultaneously applying pressure and heat to said portions so that said proximal and distal walls of said inner pouch are welded together and, simultaneously, said film material of said inner pouch melts and invades the pores of said fibrous cover layer to a greater extent than said film material of said outer pouch, whereby upon the subsequent application of peeling forces, said walls of said outer pouch may be peeled away from said inner pouch without causing separation of said cover and film layers of said inner pouch. 2. The method of claim 1 in which said film material of said inner pouch has a melting temperature at least 10 degrees below the melting temperature of said outer pouch film. 3. The method of claims 1 or 2 in which said film of said inner pouch is of a composition comprising a biodegradable aliphatic polyester, or a biodegradable aliphatic-aromatic copolyester, or blends thereof, plasticized by one or more biodegradable plasticizers. 4. The method of claim 3 in which said composition comprises a blend of about 70% to 95% by weight of said biodegradable aliphatic polyester or aliphatic-aromatic copolyester and about 7% to 25% by weight of said biodegradable plasticizer or plasticizers. 5. The method of claim 4 in which said composition comprises a blend of about 75% to 93% by weight of said biodegradable aliphatic polyester or aliphatic-aromatic copolyester and about 7% to 25% by weight of said biodegradable plasticizer or plasticizers. 6. The method of claim 5 in which said composition comprises a blend of about 90% by weight of said biodegradable aliphatic polyester or aliphatic-aromatic copolyester and about 10% by weight of said biodegradable plasticizer or plasticizers. 7. The method of claim 4 in which said aliphatic polyester or aliphatic component of said copolyester comprises a polymer of a lactone. 8. The method of claim 3 in which said aliphatic-aromatic copolymer comprises a condensation product of a glycol with a combination of an aliphatic diacid and an aromatic diacid, where the aromatic diacid is less than 20% mole. 9. The method of claim 3 in which said film of said inner pouch has a thickness no greater than about 40 microns. 10. The method of claim 9 in which said film of said inner pouch has a thickness within the range of about 10 to 35 microns. 11. The method of claim 9 in which said film of said inner pouch has a thickness within the range of about 15 to 30 microns. 12. The method of claims 1 or 2 in which said fibers of said cover layer are cellulosic. 13. The method of claim 12 in which said cover layer comprises tissue paper of 100% cellulosic fibers. 14. The method of claim 1 in which said cover layer and said thermoplastic film of said inner pouch, throughout the areas between said peripheral portions and said portions surrounding said openings, are weakly bonded together and may be separated from each other with each layer remaining intact by the application of 180-degree peeling forces in the range of about 2 to 10 g/in. 15. The method of claim 14 in which said layers are separable from each other by the application of 180-degree peeling forces in the range of about 3 to 6 g/in.

이 특허에 인용된 특허 (74) 인용/피인용 타임라인 분석

Jensen Ole R. (River Vale NJ), Adhesive connecting rings for an ostomy device.
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Gordon Roy Gerald (22 Highland St. Cambridge MA 02138), Disposable articles having a water-permeable and water-repellent surface.
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da Silva,Elson Dias, Ink refill and recharging system.
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[미국특허] Flushable body waste collection pouch, pouch-in-pouch appliance using the same, and method relating thereto 원문보기

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[미국특허] Flushable body waste collection pouch, pouch-in-pouch appliance using the same, and method relating thereto 원문보기

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이 특허에 인용된 특허 (74) 인용/피인용 타임라인 분석

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