Filtration member for inflator and method of manufacturing the same

摘要

A filter ( 15 ) for an inflator, comprising a cylindrical body ( 15 a) formed by winding wires ( 16 ) therearound. The cylindrical body ( 15 a) further comprises an inner peripheral part ( 21 ) and an outer peripheral part ( 22 ) covering the outer peripheral surface of the inner peripheral part ( 21 ). The inner peripheral part ( 21 ) is formed by radially stacking a plurality of first pattern layers ( 18 a) thereon. The outer peripheral part ( 22 ) is formed by radially stacking one or more second pattern layers ( 18 a) on the outer peripheral surface of the inner peripheral part ( 21 ). The first and second pattern layers ( 18 a) and ( 18 b) are formed of the wires ( 16 ) in net shapes. The mesh of the second pattern layers ( 18 b) is smaller than that of the first pattern layer ( 18 a).