Plastic article or earthenware shaping or treating: apparatus – Preform assembly means and means for bonding of plural... – Opposed coacting press members
Patent
1973-11-01
1976-11-23
Husar, Francis S.
Plastic article or earthenware shaping or treating: apparatus
Preform assembly means and means for bonding of plural...
Opposed coacting press members
425346, 425348R, 29522, 156222, 113116FF, B29C 2712, B29C 2714
Patent
active
039934284
ABSTRACT:
A structure is described which consists of a corrugated and a flat sheet or film of thermoplastic material, which sheets are positively connected by matching depressions with undercuts arranged along the grooves of the corrugated sheet and at corresponding points of the flat sheets. The structure is especially suited to make inserts for trickling-filter towers.
REFERENCES:
patent: 2035403 (1936-03-01), Przyborowski
patent: 3359935 (1967-12-01), Rosebottom
patent: 3451367 (1969-06-01), Henrickson
patent: 3579809 (1971-05-01), Wolf
patent: 3771216 (1973-11-01), Johnson
Gumm Peter
Krussig Karl-Heinz
Lohmann Jorg
Zimmermann Josef
Hoechst Aktiengesellschaft
Husar Francis S.
Rowold Carl
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