Hot water soluble towels, sponges and gauzes

Details Hot water soluble towels, sponges and gauzes Hot water soluble towels, sponges and gauzes

D - Textiles, Paper

01

F

D01F 6/14 (2006.01) A61L 11/00 (2006.01) A61L 15/24 (2006.01) A61L 15/62 (2006.01) B09B 3/00 (2006.01) D04H 1/42 (2006.01) A61F 13/15 (2006.01)

Patent

CA 2172390

Towel, sponge and gauze products composed of fibers of polyvinyl alcohol resin. The fibers are selectively soluble in aqueous solutions only above approximately 93°C. Polyvinyl alcohol fibers have a degree of hydrolysis of at least 99 %, are composed of no more than 1/2 % sodium acetate, 1/10% methyl alcohol and an average degree of polymerization between approximately 1300 to 1500. The polyvinyl alcohol fibers being produced by a process of dope extrusion.

Les produits décrits dans l'invention sont des serviettes, des éponges et des gazes constituées de fibres d'une résine d'alcool polyvinylique. Les fibres sont solubles sélectivement dans des solutions aqueuses uniquement au-dessus d'une température approximative de 93 ~C. Les fibres d'alcool polyvinylique ont un degré d'hudrolyse d'au moins 99 %, ne contiennent pas plus de 1/2 % d'acétate de sodium, 1/10 % d'alcool méthylique et ont un degré moyen de polymérisation compris entre 1300 et 1500 approximativement. Les fibres d'alcool polyvinylique sont produites par un procédé d'extrusion par dopage.

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