Method and equipment for processing a plasticizable material

Details Method and equipment for processing a plasticizable material Method and equipment for processing a plasticizable material

1983-09-13

1985-08-27

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

Measuring a weight or volume

264148, 264102, 264163, 264323, 425113, 425142, 425202, 425209, B29C 1700

Patent

active

045377375

ABSTRACT:
A plasticizing screw (4) is used to feed raw material (rubber compound) in the cold state into a cylinder (2). The material is plasticized and warmed up by the screw (4). The cylinder (2) is constructed so that the raw material fed into the cylinder can by retraction of the piston flow through a non-return valve into the front of the piston. The piston then extrudes the material through a die. On leaving the die, the material is cut into blanks, using a cutting mechanism (11).
Material in the cold state can be fed directly into the cylinder tanks to the plasticizing screw (4), which plasticizes and preheats the material. Volume control is achieved automatically in dependence with the advance of the piston (FIG. 1).

REFERENCES:
patent: 2774104 (1956-12-01), Miller
patent: 3050779 (1962-08-01), Farley
patent: 3298061 (1967-01-01), Pomper
patent: 3375553 (1968-04-01), Criss
patent: 3477101 (1969-11-01), Fritsch
patent: 3526688 (1970-09-01), Shelton et al.
patent: 3695575 (1972-10-01), Hauser
patent: 3774890 (1973-11-01), Lemelson
patent: 3873661 (1975-03-01), Kontz
patent: 4120630 (1978-10-01), LaSpisa et al.
patent: 4141678 (1979-02-01), Jex
patent: 4240997 (1980-12-01), Jex
Modern Plastics Encyclopedia for 1964, Sep. 1963, Figure 5.

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