Other

Tachikawa Spring Co., Ltd.

Youichiro Haraguchi

Muneharu Urai

Koji Hayashi

Tadafumi Abe

Koji Kogure

Munehjaru Urai

A method of and an apparatus for producing a seat cushion member by laminating a sheet of decorative surface material, a sheet of usual polyurethane foam material and a reinforcing web of fabric material in the above order, and subjecting the laminate to heating by a conventional heating unit and, at the same time, to high-frequency dielectric heating by a high-frequency welder to locally fuse required portions of the sheet of usual polyurethane foam material thereby welding the three layers into an integral structure.

Seat cushion cover member

Apparatus for producing seat cushion member

Method of producing seat cushion member

A method of manufacturing a cushion material by applying high frequency welding to a sandwich consisting of a core layer of foamed material, a surface material layer and a backing material layer, in which a fine powdery welding material is previously injected or impregnated in desired weld areas of the foamed material layer. The method comprises floating the fine powdery welding material in the form of a cloud, and blowing up the fine powdery welding material floating in cloud-like form to impregnate the desired areas of the foamed material layer with the fine powdery welding material.

Method of manufacturing cushion materials

Apparatus for manufacturing cushion materials

Growing community of inventors

Tokyo, Japan

Youichiro Haraguchi