Plastic article or earthenware shaping or treating: apparatus – Means providing a shaping orifice – Plural distinct feed inlets
Patent
1992-03-17
1993-05-04
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Means providing a shaping orifice
Plural distinct feed inlets
425467, 2642091, 2642098, B29C 4720
Patent
active
052080480
ABSTRACT:
A flow-rearrangement device between the annular extrusion gap of an extrusion head and the feed for the thermoplastified synthetic resin has two disks with registering grooves forming rearrangement ducts communicating axial inlet bores with axial outlet bores to effect a flow rearrangement of the thermoplastified synthetic resin which produces microtexturing of the finished product. The extrusion head may be a film or foil blowing head.
REFERENCES:
patent: 2688154 (1954-03-01), Huckfeldt
patent: 2820249 (1958-01-01), Colombo
patent: 4182603 (1980-01-01), Knittel
patent: 4185954 (1980-01-01), Murakami et al.
patent: 4421465 (1983-12-01), Herrington
patent: 4961892 (1990-10-01), Prevotat
Reckmann Bernhard
Schroeter Bernd
Schwarz Wilfried
Dubno Herbert
Nguyen Khanh P.
Reifenhauser GmbH & Co. Maschinenfabrik
Woo Jay H.
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