Apparatus and method for extruding and cooling a polymeric sheet

Details Apparatus and method for extruding and cooling a polymeric sheet Apparatus and method for extruding and cooling a polymeric sheet

1994-05-31

1995-11-14

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

With step of cleaning, polishing, or preconditioning...

264 405, 264175, 2642102, 264237, 425327, 425363, 425367, B29C 4716, B29C 4788

Patent

active

054664039

ABSTRACT:
Apparatus for extruding and cooling a polymeric sheet incorporating an extruder connected to feed polymer through a rigid conduit and to and through a sheet die, and a roll stack including a plurality of cooling rolls having nips arranged adjacent the sheet die to continuously receive and cool polymeric sheet emanating from said die. Polymeric sheet feed control apparatus for tilting the stack to arrange the roll nips at various angles between and including the vertical and the horizontal, a pair of spaced-apart swivels positioned between the extruder and the sheet die, one swivel being connected to permit independent swinging movement of the sheet die up and down, and another swivel being connected to permit independent tilting movement of the sheet die angularly up and down to relate the tilt of the sheet die to the tilt of the stack.

REFERENCES:
patent: 3826602 (1974-07-01), Shaffer et al.
patent: 3918865 (1975-11-01), Nissel
patent: 4000230 (1976-12-01), Brendel et al.
patent: 4140463 (1979-02-01), Brinkmann et al.
patent: 4368016 (1983-01-01), Zoller
patent: 4874571 (1989-10-01), Muller
patent: 4997358 (1991-03-01), Perkins et al.
patent: 5211898 (1993-05-01), Shinmoto

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