Method of making a blow-moulded container from a thermoplastic p

Details Method of making a blow-moulded container from a thermoplastic p Method of making a blow-moulded container from a thermoplastic p

1988-11-21

1990-06-12

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Differential temperature conditioning

264235, 264533, B29C 4964

Patent

active

049331353

ABSTRACT:
To improve the properties of biaxially orientated blow-moulded containers of PET the mouth region of the container serving for fitting a closure member is heat-set, i.e. crystallized at elevated temperature. The heat-setting is effected at the mouth end of a parison or preform and the previously heat-set mouth end is then reshaped to the finished mouth portion. This improves the dimensional stability of the mouth region.

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