TH32934A - Water-degradable fibers - Google Patents

Abstract

DC60 (29/10/41) The filament sheets were coated with a water-soluble binder of polyvinyl alcohol. With a dissolved aqueous solution With soluble carboxylate to form water-degradable fibers, removing salt from polyvinyl alcohol with carboxylate Will maintain wet strength Of the fiber sheet Decomposes with water even in the wet state, which can be decomposed. Easy when dipped in Large quantity of water after use, besides, it will not be affected by deterioration in the Breakdown ability Get yourself by water And wet strength if left at High temperature and will contribute Good in the degradability with water In cold water, the fiber sheet coated with polyvinyl alcohol soluble binder is saturated. With a dissolved aqueous solution With soluble carboxylate to form a water-degradable fiber sheet, removing salt from polyvinyl alcohol by carboxylate. Will maintain wet strength Of the fiber sheet Decomposes with water even in the wet state, which can be decomposed. Easy when dipped in Large quantity of water after use, besides, it will not be affected by deterioration in the Breakdown ability Get yourself by water And wet strength if left at High temperature and will contribute Good in the ability to decompose with water in cold water.

Claims (7)

1. A water-based degradable filament sheet for use in wet conditions contains fibers that are bonded with Water soluble binders And created in sheets And the discs were filled with a water-soluble carboxylate where the binder contains polyvinyl alcohol and such soluble carboxylates for Polyvinyl alcohol precipitates and contains at least one substance that was selected from that group. Contains sodium tetrate, sodium citrate, potassium citrate, sodium malate, potassium malate and potassium tartate. The fiber base weight is 20-100 g / m 2 and has a fastener. Water soluble appears in 3-30 g / 100 of fiber. 2. The hydrophilic sheet according to claim 1, where the hydrophilic sheet is located. In the wet state by impregnation with aqueous solution in which the carboxylate is dissolved. 3. The water-degradable filament according to claim 2, where it is produced by Coat with polyvinyl alcohol binder on the surface of the network of such fibers. 4. Water-degradable filament sheet in accordance with claim 3, where the polyvinyl alcohol contains Sponsorship level 80 to 92% 5.Water-degradable fiber sheet according to claim 4, where such polyvinyl alcohol has a polymerization level of 100-2000. 6. The hydrophilic fiber sheet, according to claim 5, where the amount of such carboxylate is 1.25 g or more per 100 g of said fiber. 7. Water-degradable wiping pads according to claim 1, where the carboxylate is the substance of choice from the group containing sodium tartrate and potassium tartate and the amount of Such carbonoxylates are 2.50 g or more per 100 g of the fibers, and such polyvinyl alcohol has a polymerization level of 1000-1800, a sponification level of 82-88. % And its quantity is 5 to grams per 100 grams of said fiber.