Cross head die

Details Cross head die Cross head die

1987-03-04

1988-04-19

Chiesa, Richard L.

Plastic article or earthenware shaping or treating: apparatus

Means providing a shaping orifice

264173, 2642098, 4251311, 425467, 425532, B29C 4728

Patent

active

047386118

ABSTRACT:
A cross head die for extruding an annular layer of thermoplastic resin on a mandril includes a resin flow path having an inlet, a cardioid shaped primary distribution channel, a gate passage, an equilibration chamber and a transfer channel surrounding the mandril and a mouth at the downstream end of the transfer channel opening into a resin extrusion channel surrounding the mandrel.

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patent: 3520966 (1970-07-01), Soffiantini
patent: 4061461 (1971-12-01), Hessenthaler
patent: 4280801 (1981-07-01), Wheeler, Jr. et al.
patent: 4402898 (1983-09-01), Rosenbaum
patent: 4421465 (1983-12-01), Herrington
patent: 4484877 (1984-11-01), Stucke et al.
patent: 4495022 (1985-01-01), Viriyayvthakorn et al.
patent: 4522775 (1985-06-01), Briggs et al.
patent: 4533308 (1985-08-01), Cloeren
patent: 4578024 (1986-03-01), Sicka et al.

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