Cross-head die with volumetric flow compensation means

Details Cross-head die with volumetric flow compensation means Cross-head die with volumetric flow compensation means

1977-11-17

1979-10-16

Rosenbaum, Mark

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Control means responsive to product weight or dimension

425381, 425466, 425467, B29D 2304

Patent

active

041711955

ABSTRACT:
A cross-head die in which the manifold is provided with means for selectively varying the volume of the manifold at some locations relative to other locations, whereby the relative wall thickness about the annular configuration of the material flowing through the die is selectively adjusted about the periphery of the annular configuration of flowing material. Wall thickness and configuration are further controlled at the outlet orifice of the die by means movable to selectively expand, contract and alter the annular configuration of the die passage at the orifice.

REFERENCES:
patent: 3782873 (1974-01-01), Lynnknowles
patent: 4038017 (1977-07-01), Langecker
patent: 4047868 (1977-09-01), Kudo et al.
patent: 4097213 (1978-06-01), McComb et al.

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