B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/1074
B29C 51/42 (2006.01) B29C 51/04 (2006.01) B29C 51/10 (2006.01)
Patent
CA 1206316
ABSTRACT A process and apparatus for manufacturing a polyester container having good clarity and dimensional stability and which can be used in hot-fill food package manufacture and/or in making a container for reheating or heating the contents within. In particular, this process and apparatus is a deep stretch-forming technique for prepar- ing biaxially oriented, heat set, sealable containers of high molecular weight polyethylene terephthalate. The process comprises deep drawing a preheated sheet of the polyester 50 into a heated female cavity 34 by means of a male plug 10. The part is heat set against the female cavity 34, and cooled against the male plug 10 which is used as a constraint. The part is subsequently removed from the male plug 10.
414649
Gartland Robert J.
Hrivnak John E.
Smart & Biggar
The Goodyear Tire & Rubber Company
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