POLYESTER FIBER STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a polyester fiber structure which has low shrinkage and low tensile strength at a high temperature, and attains compatibility between dimensional stability and formability in hot forming.SOLUTION: The polyester fiber structure is a fiber structure which uses a part or all of polyester fiber formed by kneading 5-95 mass% of polytrimethylene terephthalate resin and 95-5 mass% of polyethylene terephthalate resin, and is a polyester fiber structure having one peak of 210-220 as a melting point peak of the fiber. The tensile strength retention at high temperature of the fiber structure is 67% or less in length and 82% or less in width. The fiber structure is a needle-punched nonwoven fabric.