Method of making a laminar hollow body of angular cross-section

Details Method of making a laminar hollow body of angular cross-section Method of making a laminar hollow body of angular cross-section

1977-04-26

1978-07-25

Drummond, Douglas J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156222, 156461, 156471, B31F 100, B29D 2310

Patent

active

041027256

ABSTRACT:
A laminar body is prepared from sheets of cardboard and the like by forming an elongated intergral rib in one major face of a first sheet and a corresponding groove in the second major face. A second sheet is fastened adhesively in area contact to the second major face of the first sheet in a position in which the second sheet bounds an elongated duct in the groove. The two sheets, thereby secured to each other, are bent angularly about a line parallel to and adjacent the groove so that the second sheet is on the inside of the resulting bend.

REFERENCES:
patent: 1815887 (1931-07-01), Agar
patent: 2206962 (1940-07-01), Karcher
patent: 3386323 (1968-06-01), Dovey

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