Water-disintegratable fibrous sheet

Details Water-disintegratable fibrous sheet Water-disintegratable fibrous sheet

D - Textiles, Paper

21

H

D21H 13/16 (2006.01) D21H 17/14 (2006.01) D21H 17/36 (2006.01)

Patent

CA 2243145

A fibrous sheet coated with a water-soluble binder of polyvinyl alcohol is impregnated with an aqueous solution dissolved with water-soluble carboxylate, so as to produce a water-disintegratable fibrous sheet. Salting. out of the polyvinyl alcohol with the carboxylate maintains wet strength of the water-disintegratable fibrous sheet even in a wet state, which is easily disintegrated when immersed in a large amount of water after use. Furthermore, it does not suffer from deterioration in water-disintegratability and wet strength if it is left at high temperatures, and is good in water-disintegratability in cold water.

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