Inventors:
Wiley L. Easley - Lancaster MA
Richard J. Hoeske - Leominister MA
Silvio Petrucci - Fitchburg MA
Assignee:
The Gillette Company - Boston MA
International Classification:
B28C 704, B29B 106
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.