Plastic article or earthenware shaping or treating: apparatus – With separate apparatus cleaning means – Coacting with forming means or dough divider type trap chamber
Patent
1979-10-10
1981-02-03
Thurlow, Jeffery R.
Plastic article or earthenware shaping or treating: apparatus
With separate apparatus cleaning means
Coacting with forming means or dough divider type trap chamber
15236R, 15248R, 30169, 264 39, 264169, 264176R, 425381, 425466, B08B 100, B29D 704
Patent
active
042485797
ABSTRACT:
A T-shaped extrusion die for forming transparent, uniformly thick and edge beads-free synthetic resins with a high efficiency, comprising a die body having a manifold for containing a supply of the synthetic resin in molten state and a slot-like passage for the molten resin, adjustable lips for forming a slot-like discharge orifice, inner deckles useful mainly for varying the edge thickness of the resulting extruded film, support rods for supporting the inner deckles, and inner deckle rods for regulating the width of the resulting extruded film, the inner deckles being moved by moving the support rods in the manifold in sliding contact with the surface thereof to vary the edge thickness of the resulting film, the inner deckle and inner deckle rod being kept somewhat away from each other thereby to permit free movement of the latter even under a high molten resin pressure. In one embodiment, a remover for an oxidized or scorched resin is disclosed.
REFERENCES:
patent: 2811767 (1957-11-01), Dufford
patent: 3018515 (1962-01-01), Sneddon
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patent: 3711235 (1973-01-01), Bunte
patent: 3804569 (1974-04-01), Walker
patent: 3829274 (1974-08-01), Melead
patent: 3832120 (1974-08-01), Shaffer
patent: 3975475 (1976-08-01), Foley
patent: 4057385 (1977-11-01), Yazaki et al.
Jyohoku Seiko Co., Ltd.
Thurlow Jeffery R.
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