Method of manufacturing cushion materials

Details Method of manufacturing cushion materials Method of manufacturing cushion materials

1977-05-31

1978-06-20

Drummond, Douglas J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156283, B29C 1904, B32B 3100

Patent

active

040960145

ABSTRACT:
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.

REFERENCES:
patent: 3393119 (1968-07-01), Dugan
patent: 3906134 (1975-09-01), Pohl

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