Package making – Methods – Forming or partial forming a receptacle and subsequent filling
Patent
1985-05-03
1987-05-19
Silbaugh, Jan H.
Package making
Methods
Forming or partial forming a receptacle and subsequent filling
264 37, 264513, 264515, 264524, 264532, B65B 304, B65B 700, B29C 4922
Patent
active
046656820
ABSTRACT:
This relates to a method of forming a thermal/collapse-resistant highly oriented polyester container for use in hot fill applications. In accordance with the method of a polyester preform is reheated and then placed in a blow mold cavity whereat the preform is distended to match the blow mold cavity to form an intermediate article including a container having an oriented end unit receiving finish of a diameter materially greater than the diameter of the preform. The method is characterized in that in providing the preform the composition of the polyester, the draw ratio during distending of the preform and reheat conditions are all controlled to provide a container with a sidewall and finish density in the range of 1.350 to substantially but less than 1.370 grams/cubic centimeter.
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Beck Martin H.
Clark Richard E.
Collette Wayne N.
Harry Ieuan L.
Kerins Gerard J.
Brown Charles E.
Continental PET Technologies Inc.
McCarthy Neil M.
Silbaugh Jan H.
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