Die for forming extrudate having two visible longitudinal compon

Details Die for forming extrudate having two visible longitudinal compon Die for forming extrudate having two visible longitudinal compon

1996-06-21

1998-02-17

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Means feeding fluent stock from plural sources to common...

Extrusion shaping means

26417214, 26417316, 4251331, 425462, B29C 4706

Patent

active

057189269

ABSTRACT:
A die for extrusion of an extrudate from an extruder has a tubular member, a hollowed distributor portion and a hollowed nozzle portion configured and arranged so that extrudate issuing from the die has two visible longitudinal components. The tubular member has three successive and integral portions wherein first and third portions are, in cross-section, continuous and wherein the second portion is, in cross-section, discontinuous. The first tubular member portion has an interior wall surface which, in cross-section, has radial projections and recesses therebetween so that the interior wall surface defines a shape which is an outline of a star-like shape, and the second tubular member portion has longitudinal openings which are in alignment with the first portion projections. The distributor portion surrounds the first tubular member portion to define a chamber and has an opening into the chamber, and the nozzle portion has a first end integral with the distributor portion and extends to the third tubular member portion to define a chamber extension and end enclosure.

REFERENCES:
patent: 2174779 (1939-10-01), Delorme
patent: 3458390 (1969-07-01), Ando et al.
patent: 3849044 (1974-11-01), Ando et al.
patent: 4370114 (1983-01-01), Okamoto et al.
patent: 4381274 (1983-04-01), Kessler et al.
patent: 4459094 (1984-07-01), Sanabria
patent: 4786243 (1988-11-01), Kehoe
patent: 5256050 (1993-10-01), Davies
patent: 5486049 (1996-01-01), Boatman et al.
Takehiko et al., Japanese Patent Document No. JP-A-60 201923 (1985).
Derwent Abstract, Acc. No. C85-126919, abstract of Takehiko, et al., Japanese Patent Document No. JP-A-60 201923 (1985).

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