Method of fastening sheet material

Details Method of fastening sheet material Method of fastening sheet material

1975-12-04

1976-07-20

Coan, James F.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156253, B31F 502

Patent

active

039699927

ABSTRACT:
A method of providing an improved mechanical bond when fastening a plurality of paper sheets together. The body of sheet material is punched or cut through to form a flap. The flap is then folded over upon the body of sheets, and the flap and body of sheets are simultaneously crimped. A superior mechanical bond is formed, because three separate bonds are made; the body of sheets are fastened together, the layers of the flap are fastened together, and the body of sheets is fastened to the flap.

REFERENCES:
patent: 1174069 (1916-03-01), Hosford
patent: 1324103 (1919-12-01), Cone
patent: 1958455 (1934-05-01), Ware
patent: 2020668 (1935-11-01), Wandel
patent: 3233526 (1966-02-01), Sherman
patent: 3810809 (1974-05-01), Herd et al.

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