Flushable body waste collection pouch, pouch-in-pouch appliance using the same, and method relating thereto
First Claim
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1. A biodegradable body waste collection pouch particularly suitable for flush toilet disposability;
- said pouch having a pair of side walls secured together along their peripheral edges to define a waste-receiving chamber therebetween;
one of said side walls having a waste-receiving opening therethrough communicating with said chamber; and
external attachment means provided about said opening for attachment of said pouch to a wearer;
said walls of said pouch being cut from a laminate composed of (a) a layer of thin heat-sealable film impermeable to liquid and solid body wastes and of a composition comprising a biodegradable aliphatic polyester, or a biodegradable aliphatic-aromatic copolyester, or blends thereof, plasticized by one or more biodegradable plasticizers and (b) a water-disintegratable biodegradable cover layer of water-dispersible fibers having one of its surfaces uninterruptedly bonded thereto;
said film having a thickness no greater than about 40 microns;
said layers of said laminate being weakly bonded together and separable 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.
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Abstract
A biodegradable and toilet-flushable body waste collection pouch, and an appliance 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.
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Citations
40 Claims
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1. A biodegradable body waste collection pouch particularly suitable for flush toilet disposability;
- said pouch having a pair of side walls secured together along their peripheral edges to define a waste-receiving chamber therebetween;
one of said side walls having a waste-receiving opening therethrough communicating with said chamber; and
external attachment means provided about said opening for attachment of said pouch to a wearer;
said walls of said pouch being cut from a laminate composed of (a) a layer of thin heat-sealable film impermeable to liquid and solid body wastes and of a composition comprising a biodegradable aliphatic polyester, or a biodegradable aliphatic-aromatic copolyester, or blends thereof, plasticized by one or more biodegradable plasticizers and (b) a water-disintegratable biodegradable cover layer of water-dispersible fibers having one of its surfaces uninterruptedly bonded thereto;
said film having a thickness no greater than about 40 microns;
said layers of said laminate being weakly bonded together and separable 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
- said pouch having a pair of side walls secured together along their peripheral edges to define a waste-receiving chamber therebetween;
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17. A pouch-in-pouch body waste collection appliance comprising an outer pouch formed of liquid, gas and odor impermeable heat-sealable polymeric film having proximal and distal side walls defining a chamber;
- a toilet-disposable inner pouch having proximal and distal side walls and being disposed in said chamber;
said proximal walls of said inner and outer pouches having aligned body waste receiving openings therethrough; and
attachment means for attaching said proximal walls of said inner and outer pouches in areas surrounding said openings to skin surfaces of a patient about a body waste discharge orifice;
said disposable inner pouch having walls formed from sheet material composed of (a) a layer of thin heat-sealable film impermeable to body wastes of a composition comprising a biodegradable aliphatic polyester, or a biodegradable aliphatic-aromatic copolyester, or blends thereof, plasticized by one or more biodegradable plasticizers and (b) a water-disintegratable, porous, biodegradable cover layer of water-dispersible fibers bonded thereto;
said heat-sealable film of said inner pouch having a melting temperature lower than that of the heat-sealable film of said outer pouch;
said walls of said outer and inner pouches having peripheral edge portions heat-sealed together with the peripheral edge portions of said cover layer being bonded more securely to the film material of said inner pouch than to the film material of said outer pouch. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
- a toilet-disposable inner pouch having proximal and distal side walls and being disposed in said chamber;
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30. A pouch-in-pouch body waste collection appliance comprising an outer pouch formed of liquid, gas and odor impermeable heat-sealable polymeric film having proximal and distal side walls defining a chamber;
- a toilet-disposable inner pouch having proximal and distal side walls and being disposed in said chamber;
said proximal walls of said inner and outer pouches having aligned body waste receiving openings therethrough; and
attachment means for attaching said proximal walls of said inner and outer pouches in areas surrounding said openings to skin surfaces of a wearer about a body waste discharge orifice;
said disposable inner pouch having walls formed of (a) a layer of a heat-sealable film impermeable to body wastes having a thickness no greater than about 40 microns and of a composition comprising a biodegradable aliphatic polyester, or a biodegradable aliphatic-aromatic copolyester, or blends thereof, plasticized by one or more biodegradable plasticizers and (b) a water-disintegratable, porous, biodegradable cover layer of water-dispersible fibers having substantially an entire surface of said cover layer, except for its peripheral edges, weakly bonded to said inner pouch film;
said weak bond permitting separation of said surface of said cover layer from said inner pouch film, with both remaining substantially intact, by the application of 180 degree peeling forces in the range of about 2 to 10 g/in. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
- a toilet-disposable inner pouch having proximal and distal side walls and being disposed in said chamber;
Specification