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The material flow within an extrusion die body is adjusted by a metering device to alter the product perforation pattern of an extrusion product produced in the extrusion die without changes of or modifications to any of the various other parts of the extruder system being required. The extruder sys

The material flow within an extrusion die body is adjusted by a metering device to alter the product perforation pattern of an extrusion product produced in the extrusion die without changes of or modifications to any of the various other parts of the extruder system being required. The extruder system is an apparatus which includes, in addition to a hydraulic cylinder powered press, a basic extrusion die, a die body, a set of perforation forming die pins and a ported cover or pin support plate.

대표청구항 ▼

An extrusion die for producing elongated products having longitudinally co-extending perforations, said perforations arranged in predetermined, varying patterns comprising (a) a body having a central bore and an open chamber communicating with said bore; (b) cover means for said chamber having at le

An extrusion die for producing elongated products having longitudinally co-extending perforations, said perforations arranged in predetermined, varying patterns comprising (a) a body having a central bore and an open chamber communicating with said bore; (b) cover means for said chamber having at least one aperture for passage of extrusion product into said chamber; (c) means in said body for regulating the flow of said product in said chamber including means for diverting a portion of said product and defining a passageway for said diverted portion to flow to said bore and means defining a passageway for the remaining product in said chamber to flow to said bore, said diverted flow passageway being relatively more circuitous than said remaining product passageway; (d) means in said body for forming said perforations in said patterns in said product; and (e) a selected one of a variety of means positionable in cooperating relationship with said regulating means for metering the flow of said product in said body for effecting an adjustment in the distribution of product in said chamber and thereby forcing a positional adjustment of said perforation forming means in said bore to provide a selected one of said predetermined, varying perforation patterns.