Marbleization of plastic materials

Details Marbleization of plastic materials Marbleization of plastic materials

1978-11-16

1980-01-15

Jenkins, Robert W.

Agitating

Rubber or heavy plastic working

With specified feed means

366 77, 366 78, 366 89, 366323, B28C 704, B29B 106

Patent

active

041836731

ABSTRACT:
Methods and apparatus for marbleizing molded parts produced by screw extruder machines. Liquid colorant is advantageously injected at a comparatively high pressure into a melt containing portion of the machine between the screw and its housing, where the melt is either completely molten or more than fifty percent molten.

REFERENCES:
patent: 2048286 (1936-07-01), Pease
patent: 3148412 (1964-09-01), Spreeuwers
patent: 3711067 (1973-01-01), Kovacs
patent: 3764114 (1973-10-01), Ocker
patent: 3868093 (1975-02-01), Sokolow
patent: 3905588 (1975-09-01), Reinhart

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