Extrusion die for thermoplastic webs

Details Extrusion die for thermoplastic webs Extrusion die for thermoplastic webs

1991-11-05

1993-12-28

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Stock pressurizing means operably associated with downstream...

Including restriction upstream of shaping orifice and...

425466, B29C 4716

Patent

active

052734200

ABSTRACT:
A flat web of sizable thickness made of thermoplastic can be extruded from an extrusion die without a restrictor bar if a thickness D of a restricting passage is made smaller than a shaping distance A of die lips (4, 5), and if at least one wall of the restricting passage (6) is adjustably designed as an elastic lip (7) by adjusting elements (8), so that thickness D and distance A can be changed at the same time by actuating the adjusting elements.

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