LIGHTWEIGHT HEAT-RESISTANT FILTER

摘要

PROBLEM TO BE SOLVED: To provide a heat-resistant filter which is lightweight, has a low gas permeation resistance, a full life efficiency of≥90%, and is excellent in processability and excellent in stability and fire resistance at high temperatures. SOLUTION: The filter is constituted from a nonwoven fabric prepared by binding a fibrous layer consisting of mixed fibers of heat-resistant staple fibers, high-tenacity fibers, and thermally bondable composite fibers with a flame-retardant resin binder, and has properties including lightness in a basis weight in the range of 70-200 g/m2, a bursting strength of≥3.0 kPa, and an initial tensile modulus of≥100 N/5 cm2/100% at 200°C. COPYRIGHT: (C)2009,JPO&INPIT