Apparatus for feeding scrap and base plastics material to an ext

Details Apparatus for feeding scrap and base plastics material to an ext Apparatus for feeding scrap and base plastics material to an ext

1975-12-08

1978-08-22

Reeves, Robert B.

Dispensing

Plural sources, compartment, containers and/or spaced jacket

With discharge assistant for each source

222145, 222412, 366177, 366322, B01F 708, B01F 724

Patent

active

041083342

ABSTRACT:
Apparatus for feeding plastic scrap and base material to an extruder comprises a scrap hopper to which scrap material is delivered for discharge through an outlet conduit leading to an extruding machine. The scrap plastic is fed through the conduit by means of an auger-like feed screw. Virgin or base plastic material is introduced to the scrap hopper outlet conduit and is mixed with the scrap prior to its discharge to the extruder. The base plastic material is delivered from a supply thereof to a receiver in which is an auger-like feed screw which feeds the base material into the scrap hopper outlet. At least the scrap feed screw comprises a rotary shaft having a discontinuous helical vane thereon constituted by a plurality of individual, segment-shaped members which are spaced longitudinally and circumferentially of the shaft. The discontinuity of the vane provides for slippage between the feed screw and the scrap material so as to facilitate the introduction of base plastic material into the scrap hopper outlet conduit.

REFERENCES:
patent: 66487 (1867-07-01), Gregg
patent: 292550 (1884-01-01), Fairly
patent: 376552 (1888-01-01), Rossler
patent: 2517456 (1950-08-01), Wherrett
patent: 2797702 (1974-03-01), Robertson
patent: 3182969 (1965-05-01), Rupp
patent: 3219320 (1965-11-01), Sutter
patent: 3393899 (1968-07-01), Wells
patent: 3552722 (1971-01-01), Sutter
patent: 3871629 (1975-03-01), Hishida

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