Extrusion die for extruding hollow profiles

Details Extrusion die for extruding hollow profiles Extrusion die for extruding hollow profiles

2005-05-17

2009-02-17

Davis, Robert B (Department: 1791)

Plastic article or earthenware shaping or treating: apparatus

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

Extrusion shaping means

C425S133100, C425S380000, C425S382400, C425S461000, C425S467000

Reexamination Certificate

active

07491048

ABSTRACT:
An extrusion die for extruding hollow profiles is suggested having a die head (2), which is connected to a runner part (1) and forms extrusion channels (3) for shaping a profiled strand (4), and having a runner chamber (5), which is provided between the die head (2) and the runner part (1) and runs transversely to the extrusion channels (3), which is connected around its circumference (8) to an annular channel (7) for impingement with plastic melt and from which the extrusion channels (3) of the die head (2) originate. In order to provide advantageous construction conditions, it is suggested that the runner part (1) have an inner channel (9) discharging into the runner chamber (5) inside the annular channel (7) for additional impingement of the runner chamber (5) with plastic melt.

REFERENCES:
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International Search Report for PCT/AT2005/000164; Sep. 28, 2005.

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