Core block for plywood and method and apparatus for forming same

Details Core block for plywood and method and apparatus for forming same Core block for plywood and method and apparatus for forming same

1975-11-12

1977-07-12

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

156257, 156227, 428181, 428537, B32B 328, B32B 3118

Patent

active

040355381

ABSTRACT:
A thin wood sheet is folded in a zig-zag manner to have substantially the same height and provided with cuts partially extending in the wood sheet at the folded outer end portions along the grain direction thereof.
Before the wood sheet is folded in a zig-zag manner, the thin wood sheet is shaped in a wave form and partially cut at the top and bottom of the wave form along the grain direction.

REFERENCES:
patent: 1819775 (1931-08-01), Elmendorf
patent: 2581421 (1952-01-01), Lombard et al.
patent: 3461013 (1969-08-01), Gewiss
patent: 3624161 (1971-11-01), Bub

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