Process and apparatus for the manufacture of objects of...

Details Process and apparatus for the manufacture of objects of... Process and apparatus for the manufacture of objects of...

B - Operations, Transporting

29

C

18/719

B29C 51/42 (2006.01) B29C 51/18 (2006.01)

Patent

CA 1169214

ABSTRACT PROCESS AND APPARATUS FOR THE MANUFACTURE OF OBJECTS OF CRYSTAL POLYSTYRENE Crystal polystyrene is thermoformed by extruding molten material into a temperature controlled roller press having press rollers and draw rollers separated by a support roller. The buildup of sheet between the support and draw roller is controlled. The edges of the sheet are heated and then gripped by a first set of sprockets and a second set positioned past the thermoforming device. The gripped sheet passes through a heating device where both sides of the sheet are heated before the intermittent action of the press. The formed objects are removed and the second sprockets feed the sheet to a grinder.

390291

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