Daicel Chemical Industries, Ltd.

Fuji Filter Manufacturing Co., Ltd.

Fuji Filter Manufacturing Co., Ltd. Osaka

Kazuya Koyama

Masayuki Yamazaki

Naoki Matsuda

Masato Hirooka

Eiichi Ryobo

Kazumitsu Shiomi

Masayuki c/o Daicel Chemical Industries Ltd Yamazaki

Masato c/o Daicel Chemical Industries Ltd Hirooka

Naoki c/o Daicel Chemical Industries Ltd Matsuda

A method of manufacturing a filter for a gas generator, by which a filter having a good shape retaining property can be obtained, is provided. A method of manufacturing a filter for a gas generator in which a tubular material is formed by knitting copper-plated iron wires, molten plated copper is adhered to an intersecting portion of the iron wire to fix the intersecting portion, wherein the method comprises a molding step for producing a tubular material by knitting the copper-plated iron wires, and a heat processing step in which the above tubular material is kept at a temperature not less than a melting point of copper but less than the temperature of sintering of the iron, and is then cooled.

Filter for gas generator

A filter for a gas generator in which the manufacture is simple, which has an adequate filter performance and cooling performance and, furthermore, which has high reliability with little damage caused in actuation of the gas generator, is provided. The filter for an air bag gas generator comprises a first layer formed from helically wound wire rods having a cross-sectional area of 0.03 to 0.8 mm, in such a way that the pitch angle of wire rods vertically superposed in the radial direction is symmetrical, and a second layer that exists on the outer side of the first layer in the radial direction and is formed to have a finer filter particle size than the first layer using a wire rod narrower than the wire rod that forms the first layer.

Filter for an air bag gas generator

Growing community of inventors

Tochigi, Japan

Kazuya Koyama