Longitudinal seam and method of forming
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United States of America Patent
Stats
-
Dec 29, 1987
Grant Date -
N/A
app pub date -
Jun 19, 1986
filing date -
Jul 27, 1928
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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Cited Art Landscape
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