PRODUCTION OF NONWOVEN FABRIC STRUCTURAL FORM AND NONWOVEN FABRIC STRUCTURAL FORM THUS PRODUCED

摘要

PROBLEM TO BE SOLVED: To obtain a nonwoven fabric structural form comprising fluorine-based fibers and having both heat resistance and chemical resistance by removing, from a nonwoven fabric comprising a combination of the fluorine-based fibers and decomposable and/or dissolution-removable fibers, the latter fibers followed by subjecting the resultant fabric to high-pressure water jet interlacing treatment.;SOLUTION: This nonwoven fabric structural form comprising fluorine-based fibers is obtained by the following process: a nonwoven fabric is first produced by mixing fluorine-based fibers (e.g. fluoroethylene-based fibers) with decomposable and/or dissolution-removable fibers (e.g. polyvinyl alcohol-based fibers ≤90°C in underwater dissolution temperature or polyester fibers dissolvable in an aqueous alkaline solution) in a weight ratio of (50:50) to (95:5), pref. (60:40) to (90:10) followed by passing the mixture through a carding process, and the latter fibers are then removed from the nonwoven fabric followed by subjecting the resultant nonwoven fabric to water jet interlacing treatment at a hydraulic pressure of ≥50 kg/mm2.;COPYRIGHT: (C)2000,JPO