Longitudinal seam and method of forming

Details Longitudinal seam and method of forming Longitudinal seam and method of forming

1986-06-19

1987-12-29

Gallagher, John J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156157, 156192, 1563071, 1563086, 156324, 242 59, 428 57, 428906, B32B 3100

Patent

active

047159154

ABSTRACT:
A seam is described wherein two sheets of material are bonded together to form one unified sheet. Edges of each sheet are stepped so that one side of an edge has a stepped portion and the opposite has a planar or flat surface. The planar or stepped surfaces of the two edges are joined together to form a seam in such a manner that the thickness of the seam is no greater than one and one half times the thickness of the sheet material. This is preferably used to form a longitudinal seam in a roll of sheet material.

REFERENCES:
patent: 219182 (1979-09-01), Stearns
patent: 1778307 (1930-10-01), Bowers et al.
patent: 3063889 (1962-11-01), Staff
patent: 3068137 (1962-12-01), Seubert
patent: 3166458 (1965-01-01), Chinn et al.
patent: 3619314 (1971-11-01), Ecureux
patent: 3769136 (1973-10-01), Ospelt
patent: 3865665 (1975-02-01), Marion
patent: 4337112 (1982-06-01), Hollis
patent: 4379114 (1983-04-01), Fujiki et al.

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