Method for introducing additives into an extruder

Details Method for introducing additives into an extruder Method for introducing additives into an extruder

1994-04-29

1995-08-08

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

264 407, 264140, 264211, 264349, B29C 4792, D01F 104

Patent

active

054396239

ABSTRACT:
This invention relates to a method for controlling the introduction of additives, in the form of a plurality of strands, to a cutter. The strands are cut into pellets, and the pellets are fed to an extruder for making thermoplastic shaped articles. The feeding of the strands to the cutter and extruder involves feeding the strands through a metering device and calculating the feed rate, velocity, and delta position for each strand per feed interval in order to obtain the desired amount of additive in the resulting thermoplastic article.

REFERENCES:
patent: 3530754 (1970-09-01), Kalman
patent: 4848915 (1989-07-01), Fintel
patent: 4919872 (1990-04-01), Fintel
Translation of Fed. Rep. of Germany 3,523,661 (Published Jan. 8, 1987).

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