Method of manufacturing clear plastic lids

Details Method of manufacturing clear plastic lids Method of manufacturing clear plastic lids

B - Operations, Transporting

29

D

18/521

B29D 7/00 (2006.01) B29C 47/00 (2006.01)

Patent

CA 1051625

ABSTRACT OF THE INVENTION Continuous thermoplastic sheeting is manufactured by extruding thermoplastic material from a circular die to form seamless thin walled tubing. This hot, seamless tube is pressed together between a water cooled draw roll and a water cooled elastomerically coated roll to form sheet material which is transparent and without the speckled finish caused by in- cluded air.

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