Water-disintegrable sheet having biodegradability

Details Water-disintegrable sheet having biodegradability Water-disintegrable sheet having biodegradability

D - Textiles, Paper

21

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D21H 13/24 (2006.01) A47L 13/17 (2006.01) D04H 1/42 (2006.01) D04H 1/64 (2006.01) D21H 13/10 (2006.01) D21H 17/26 (2006.01)

Patent

CA 2206478

A water-disintegrable sheet having biodegradability. The sheet comprises one or more kinds of biodegradable synthetic fibers, and one or more kinds of natural fibers and/or regenerated fibers, all the fibers being bound together by a binder such that the binding power of the binder will be substantially lost in water. The sheet has a given degree of tensile strength and good softness, coupled with a required degree of liquid absorbency, and still has some biodegradation property. Therefore, the sheet can be flushed in a flush toilet without involving any appreciable increase in the volume of solid residues in a septic tank and/or in a sewage disposal plant and is therefore suitable for use in the form of a wet wiper in particular.

Cette invention concerne un voile biodégradable et hydrolysable qui comprend au moins une fibre synthétique biodégradable et au moins une fibre naturelle et/ou régénérée, lesdites fibres étant liées les unes aux autres à l'aide d'un agent de liaison perdant une grande partie de son pouvoir adhésif dans l'eau. Ce voile possède des qualités combinées de résistance à la tension et de douceur, ainsi qu'une capacité souhaitable d'absorption des liquides, ledit voile étant en outre biodégradable. Ainsi, lors de son évacuation par la chasse d'eau des toilettes, ce voile n'entraîne aucun accroissement sensible des résidus solides dans les fosses septiques ou dans les installations de traitement des eaux usées, ce qui le rend utile notamment dans la production de tampons humides.

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