Process for metering color concentrates to thermoplastic polymer

Details Process for metering color concentrates to thermoplastic polymer Process for metering color concentrates to thermoplastic polymer

1989-02-16

1990-04-24

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

With twining, plying, braiding, or textile fabric formation

264 401, 264 407, 264143, 2642106, 26421114, B29C 4792

Patent

active

049198726

ABSTRACT:
Continuous strands of color concentrate are metered into the feed zone of a screw-melter polymer extruder where they are cut into pellets by the shearing action of the flights of a rotating screw against the extruder housing. These pellets are mixed within the extruder with a thermoplastic polymer to be colored and this mixture is then melted and extruded into a useful article, for example, a fiber for textile or carpeting end-use.
Additionally, color concentrates can be first formed into continuous strands and stored conveniently on a spool for subsequent metering into the polymer extruder.

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