Manufacturing apparatus for manufacturing different color pellet

Details Manufacturing apparatus for manufacturing different color pellet Manufacturing apparatus for manufacturing different color pellet

1999-02-05

2000-11-21

Davis, Robert

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

Plural wear or shaping surfaces mounted for alternative use

425185, 425311, 425198, 4253823, B29B 906

Patent

active

061494194

ABSTRACT:
A first granulating unit A for molding molten resin of one color into pellets and a second granulating unit B for molding molten resin of the other color into pellets are provided in one screw type kneading extruder 1. The first granulating unit A is made to communicate with a discharge port 2a while the second granulating unit B is blocked. After the pellets of one color are molded in this state, the discharge port 2a is made open to the outside of the apparatus, and a thermoplastic resin material of the other color is kneaded and melted by means of the screw type kneading extruder 1, and discharged to the outside of the apparatus to thereby perform cleaning operation. Next, the second granulating unit B is made to communicate with the discharge port 2a while the first granulating unit A is blocked. In this state, the pellets of the other color are molded.

REFERENCES:
patent: 3589163 (1971-06-01), Byrne et al.
patent: 4984977 (1991-01-01), Grimminger et al.
patent: 5238385 (1993-08-01), Johnson
patent: 5650179 (1997-07-01), Schier
patent: 5723082 (1998-03-01), Mizuguchi et al.
patent: 5747077 (1998-05-01), Yoshida et al.
patent: 5879720 (1999-03-01), Yoshida et al.

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