Apparatus for the continuous coating of cylindrical workpieces w

Details Apparatus for the continuous coating of cylindrical workpieces w Apparatus for the continuous coating of cylindrical workpieces w

1990-05-18

1991-11-12

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Extrusion shaping means

264174, 2642092, 425381, 4253823, B29C 4702

Patent

active

050643649

ABSTRACT:
An apparatus is provided for the continuous coating of cylindrical workpieces with a mixture of rubber or thermoplastic plastics material. The arrangement includes an extrusion device, a coating head and a flow channel, which connects the extrusion device to the coating head. The coating head includes a hollow barrel, having a rotatable sleeve-shaped material distributor coaxially disposed therein. One or more conveyor flights are helically disposed on the periphery of the distributor. The discharge opening of the flow channel into the coating head end has a dimension corresponding to an axial pitch length of the flights on the periphery of the distributor.

REFERENCES:
patent: 815571 (1906-03-01), Williams
patent: 3296659 (1967-01-01), Okazaki
patent: 3979488 (1976-09-01), Greenhalgh et al.
patent: 4832588 (1989-05-01), Rasmussen
patent: 4838777 (1989-06-01), Weber

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