Process and apparatus for the production of sheeting having a co

Details Process and apparatus for the production of sheeting having a co Process and apparatus for the production of sheeting having a co

1982-08-05

1984-10-09

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

Controlling rate of movement of molding material or its...

264 75, 264171, 264245, 4251311, 425376A, 425462, B29F 310

Patent

active

044760752

ABSTRACT:
A slot die apparatus for the coextrusion of an endless sheet having a thickness of about 0.1-5 mm with an optionally dyed edge strip made from a narrower, optionally colored, melt stream of a width of about 100-500 mm and from a broader melt stream of a width of about 1,000-3,000 mm of a thermoplastic synthetic resin is provided by means of two parallel-operating extruders and associated melt pumps, with merging of the two melt streams. The apparatus is also provided by flanging together, by means of a flange, two dies at their end faces, these dies having identical cross sections and a corresponding width, comprising a spreader block, deckle, bottom lip, and top lip, and a flow channel made up from these components.

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