Apparatus for the production of plastic compound pipes

Details Apparatus for the production of plastic compound pipes Apparatus for the production of plastic compound pipes

1997-09-19

2000-04-04

Pyon, Harold

Plastic article or earthenware shaping or treating: apparatus

Means feeding fluent stock from plural sources to common...

Extrusion shaping means

425192R, 425233, 425336, 4253791, 425392, 425396, B29C 4790

Patent

active

060453478

ABSTRACT:
An apparatus for the production of plastic compound pipes has a pipe head and half shells completing each other in pairs to form a mold. The pipe head has a supporting ring, which is joined to a connecting piece of an extruder by a first adjusting device. Hereby the width of an injection channel can be modified over its circumference. Between the supporting ring and an external nozzle jacket, a second adjusting device is provided, by which the width of an external channel is adjustable over its circumference.

REFERENCES:
patent: 3221371 (1965-12-01), Stevens
patent: 3570062 (1971-03-01), Dukert et al.
patent: 3609809 (1971-10-01), Slicker
patent: 4136143 (1979-01-01), Lupke et al.
patent: 4846660 (1989-07-01), Drossbach
patent: 5320797 (1994-06-01), Hegler et al.
patent: 5346384 (1994-09-01), Hegler et al.
patent: 5466402 (1995-11-01), Lupke
patent: 5472659 (1995-12-01), Hegler et al.

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