Extrusion press head for the extrusion of tubular strands of pla

Details Extrusion press head for the extrusion of tubular strands of pla Extrusion press head for the extrusion of tubular strands of pla

1977-06-07

1978-10-17

Husar, Francis S.

Plastic article or earthenware shaping or treating: apparatus

Means providing a shaping orifice

Plural distinct feed inlets

264209, 4251331, 425380, 425467, B29D 2304

Patent

active

041206339

ABSTRACT:
An extrusion press head for the extrusion of tubular strands of plastic material includes an outer housing and a stationary mandrel extending coaxially through the outer housing to form with the latter an annular space in which an annular piston is reciprocable. The material to be extruded is fed into the annular space through at least one feed channel which communicates with the annular space through an annular outlet and extending in axial direction of the mandrel.

REFERENCES:
patent: 3386132 (1968-06-01), Fischer
patent: 3985490 (1976-10-01), Kader
patent: 4038017 (1977-07-01), Langecker
patent: 4059373 (1977-11-01), Maier

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