Double-walled shaped plastic articles

Details Double-walled shaped plastic articles Double-walled shaped plastic articles

1978-04-14

1980-02-12

Ansher, Harold

Stock material or miscellaneous articles

Hollow or container type article

Glass, ceramic, or sintered, fused, fired, or calcined metal...

428 53, 428 68, 428120, 428161, 428177, 428913, B32B 1700, B32B 2706, E06B 324, C03C 2712

Patent

active

041884256

ABSTRACT:
What is disclosed is a double-walled shaped plastic article comprising a first sheet of a synthetic resin having a geometrically regular depression therein, the depressed portions of which are connected to surrounding planar portions of said sheet by a side wall, a circumferential groove in said side wall, and a second sheet of synthetic resin having edge portions pressure fitted into said circumferential groove.

REFERENCES:
patent: 2601658 (1952-06-01), Bussert
patent: 2987843 (1961-06-01), Anthony
patent: 3573149 (1971-03-01), Tibble et al.
patent: 3802945 (1974-04-01), James

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