Hard cotton structure with improved settling resistance

摘要

PROBLEM TO BE SOLVED: To provide a hard cotton structure that improves fatigue resistance, solves the bottoming feel and can be effectively used as a pillow, cushion, sleeping pad. SOLUTION: As a matrix, (A) non-elastic polyester crimped staple fibers and (B) non-elastic, hot melting staple fibers comprising a polyester copolymer melting at a temperature 30-150 deg.C lower than the melting point of the polyester of the staple fiber (A) and another polyester polymer melting at a higher temperature than the melting point of the polyester copolymer are formulated at a weight ratio A/B of 90/10-50/50. At least a part of the stable fibers are fused to form a fiber structure having solidly stuck points. This fiber structure is treated with a surface treatment agent made of a polyether-ester block copolymer in an amount of 0.02-5.0wt.% based on the total weight of the crimped staple fibers (A) and composite staple fibers (B).