Process for manufacturing an extruded and cut product containing

Details Process for manufacturing an extruded and cut product containing Process for manufacturing an extruded and cut product containing

1993-02-08

1994-06-14

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

To form particulate product

264142, 264148, 264172, 425132, 425145, 425308, 426516, B29B 1102

Patent

active

053207939

ABSTRACT:
A process for manufacturing extruded and cut products (70) containing a first material (20), resistant to being severed or sensitive to being severed, and an easily severed second material (16). Includes an extruder apparatus (10) with a first conduit (14) disposed to accept the first material, and a second conduit (18) disposed to accept the second material. And diverter cylinders (22) and (24), opening into the conduits to cyclicly extract or inject the materials from the conduits, producing intermittent flows within the conduits (14) and (18) out of phase of each other, next the materials alternately fill a transverse section of a confluence (42) to form a transversely layered extrusion (35). A conventional cutter is timed to transversely sever the transversely layered extrusion when a transverse layer of easily severed material (16) is exiting.

REFERENCES:
patent: 3049397 (1962-08-01), O'Shaughnessy
patent: 3608013 (1971-09-01), Ingham
patent: 4113890 (1978-09-01), Long
patent: 4151251 (1979-04-01), Kropa
patent: 4659580 (1987-04-01), Svengren
patent: 4828780 (1989-05-01), Luker
patent: 4876052 (1989-10-01), Yamada et al.

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