NONWOVEN POLYESTER FABRIC WITH HIGH RESISTANCE TO WATER PRESSURE

摘要

A nonwoven polyester fabric with high resistance to water pressure comprising a laminated nonwoven-fabric structure which has a value of water pressure resistance of 2 kPa or higher and is composed of a nonwoven fabric layer of ultrathin fibers made of a polyester material containing at least 1% polyolefin material and having a fiber diameter of 5 mum or smaller and a nonwoven fabric layer of long polyester fibers having a fiber diameter of 7 mum or larger, the two layers having been united with each other by thermocompression bonding. The nonwoven fabric material is suitable for use as a moisture- permeable waterproof sheet for building materials or as a shoe material. It is further suitable for use as various packaging materials, e.g., as a packaging material for drying in fields where filtering performance is required or as a packaging material for sterilization which is required to have radiation resistance and peel strength also.