Feedblock and die assembly

Details Feedblock and die assembly Feedblock and die assembly

1977-04-08

1979-03-13

Lazarus, Richard B.

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

For extrusion or injection type shaping means

4251355, 425461, 425462, B29D 702

Patent

active

041440110

ABSTRACT:
A feedblock for co-extrusion of a multilayer article in which a first die body has a discharge passage channel in a face of the body extending to a discharge opening. A second die body has a mating face for covering the channel in the face of the first die body to enclose the discharge passage. Feed openings are provided in the first die body and are connected to the discharge passage by flow passages in the first die body which may be provided by flow channels in the face of the first die body. The mating face of the second die body may also have a flow channel matching a discharge passage or flow channel of the first die body to provide a flow passage.

REFERENCES:
patent: 2734224 (1956-02-01), Winstead
patent: 3365750 (1968-01-01), Donald
patent: 3399428 (1968-09-01), Valyi
patent: 3743459 (1973-07-01), Schrenk et al.
patent: 4015926 (1977-04-01), Nehmey

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