Degasser on a worm-type melting and conveying device for a plast

Details Degasser on a worm-type melting and conveying device for a plast Degasser on a worm-type melting and conveying device for a plast

1980-02-15

1982-02-09

Coe, Philip R.

Agitating

Rubber or heavy plastic working

With specified vent means

159 2E, 425203, 425812, B29B 110

Patent

active

043147658

ABSTRACT:
In a melting and conveying device for a plastic injection molding machine, having a melting cylinder with a cylindrical bore therein and a worm member in said cylindrical bore, a degasser, comprising, a vent pin extending into the melting cylinder in a degassing zone of the cylinder bore. The vent pin defines a widened charging pocket which communicates with the cylindrical bore and has a vent opening therethrough communicating the pocket to the atmosphere. A pair of heating elements extend into suitably provided openings in the vent pin to selectively heat the vent opening and pocket independently of any heating elements of the plastic injection molding machine to prevent clogging of the pocket and vent opening by solidified plastic material.

REFERENCES:
patent: 3376603 (1968-04-01), Colombo
patent: 3410938 (1968-11-01), Schippers
patent: 3612141 (1971-10-01), Ocker

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