Method of blow molding a flat container having portions with...

Details Method of blow molding a flat container having portions with... Method of blow molding a flat container having portions with...

B - Operations, Transporting

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C

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B29C 49/18 (2006.01) B29C 49/14 (2006.01) B29C 49/76 (2006.01) B29C 49/04 (2006.01)

Patent

CA 1328155

ABSTRACT The flat container may be produced by extruding a molten resin to form a parison, closing the bottom of the parison, preblowing the parison such that the inner sufaces do not contact together, drafting the parison in a molten state, expanding the parison with the outer edge of the parison extending beyond that of the cavity of a mold, pinching the expanded parison with mold to fuse the outer edge portions together along the outer edge of the cavity, and forcing a pressurized fluid into the parison pinched by the mold so that the parison is shaped in close contact with the inside surfaces of the mold cavity. This method may faciliate to manufacture the flat container even with high flatness by a simple steps.

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