Arrangement for feeding elastomeric particles into an extruder

Details Arrangement for feeding elastomeric particles into an extruder Arrangement for feeding elastomeric particles into an extruder

1978-03-23

1979-09-25

Rosenbaum, Mark

Plastic article or earthenware shaping or treating: apparatus

With separate and distinct upstream agitating or kneading means

Serially arranged chambers each housing a kneading or mixing...

366 76, 425379R, 425461, B29F 308

Patent

active

041689437

ABSTRACT:
The invention comprises an apparatus for the continuous extruding of a cohesive wire of a thermosetting elastomeric material at a temperature above the minimum curing temperature of said material from a particulate feed of said material in uncured form. The apparatus comprises a hollow generally horizontal cylinder, with a hole extending through an upper portion thereof and having a rotatingly powered screw longitudinally therewithin in close fitting relation to the inner wall thereof and adapted to force an elastomeric material towards one end of said cylinder. The apparatus includes means for controlling the temperature of said powered screw. A feed conduit is included extending generally upwardly from the hole. There is also provided a driven screw within the conduit in spaced apart relation from the inner wall thereof, the screw being driven in a direction to feed said elastomeric material generally upwardly away from said hole. The apparatus further includes an orifice adjacent said one end of said cylinder through which a cohesive wire of said elastomeric material is forced by action of said powered screw.

REFERENCES:
patent: 2061042 (1936-11-01), Parkhurst
patent: 3387331 (1968-06-01), Billings
patent: 3997646 (1976-12-01), Schneider et al.
patent: 4014462 (1977-03-01), Robertson

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