Patent ID: 6187141
Filing Date: 2001-02-13
Classification: A47K,B32B,D21H,Y10T

Abstract:
A water-disintegratable wiping sheet used in a wet state comprising two water-disintegratable fibrous sheets, whereineach of said water-disintegratable fiber sheets comprises:a first fiber web comprising pulp of conifer and pulp of hardwood without a binder;a second fiber web comprising pulp of conifer, said second fiber web containing no pulp of hardwood and said first fiber web and second fiber web forming a layered structure; anda water-insoluble or water-swellable binder added to only said second fiber web;said second fiber web has a higher wet strength than the first fiber web, andsaid first fiber web is more water disintegratable than said second fiber web, and whereinsaid two water-disintegratable fibrous sheets have a wet strength of 75 g/25 mm or higher and are partially bonded one on the other with a water-soluble adhesive so that said second fiber web faces outside of said wiping sheet.