Apparatus for producing articles of thermoplastic resin

Details Apparatus for producing articles of thermoplastic resin Apparatus for producing articles of thermoplastic resin

1977-08-26

1979-02-20

Lazarus, Richard B.

Plastic article or earthenware shaping or treating: apparatus

Stock pressurizing means operably associated with downstream...

Including product handling means

138138, 138DIG3, 425378R, 425404, 425461, B29F 308

Patent

active

041404637

ABSTRACT:
Sheets, strips or filaments of thermoplastic resin are produced by one or more extruders working into a remote shaping die that is movably juxtaposed with a cooling drum around which the hot product issuing from the die mouth is to be wound, the die being connected with the extruder or extruders via one or more flexible ducts having heating elements embedded in their walls. Each duct may comprise an inner hose of Teflon, an outer envelope of reinforced silicone rubber and various intermediate layers including a heating layer in the form of a wire coil or mesh and a surrounding heat barrier of asbestos.

REFERENCES:
patent: 3109461 (1963-11-01), Wolff et al.
patent: 3522413 (1970-08-01), Chrow
patent: 3826602 (1974-07-01), Shaffer et al.

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