Extrusion welder

Details Extrusion welder Extrusion welder

1991-09-23

1992-10-06

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

With separate and distinct upstream agitating or kneading means

With cutting, severing or comminuting means

2221465, 222240, 366 76, 366183, 425207, 425209, B29C 6540

Patent

active

051530082

ABSTRACT:
The invention is directed to an extruder 1, particularly a small extruder for transferring plastics material in strand form to a plasticized state. In order to improve the homogeneity, it is provided that the screw portion 7 serving for drawing in be constructed simultaneously for granulating the plastics material which is then melted in the further plasticizing portion 6. The special arrangement of the draw-in channel 12 in relation to the configuration of the screw profile of the granulating screw portion 7 causes the separation and granulation of the drawn in plastics strand, so that material which is already granulated is fed into the plasticizing screw portion 6 projecting into the cylindrical bore hole 10 of the housing portion 9 and can then be transferred into the desired state along a short distance.

REFERENCES:
patent: 3743252 (1973-07-01), Schott, Jr.
patent: 3945535 (1976-03-01), Leiste et al.
patent: 4561569 (1985-12-01), Dziki
patent: 4695240 (1987-09-01), Li et al.
patent: 4848915 (1989-07-01), Fintel

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