Non-Round container blow molding apparatus

Details Non-Round container blow molding apparatus Non-Round container blow molding apparatus

1997-12-05

1998-12-29

Davis, Robert

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Feed control of material en route to shaping area

264521, 425171, 425526, 425534, B29C 4968

Patent

active

058537759

ABSTRACT:
Method and apparatus for forming stretch blow molded containers having uniform sidewall thickness from physical symmetric parisons. Parisons are heated non-uniformly by rotating at a non-uniform rate in a heating station. A sensor determines the angular orientation of the parisons emerging from the heating station. Each parison is angularly reoriented at a repositioning station prior to introduction into a stretch blow molding station having non-round interior surfaces, so that the temperature profile of each parison corresponds with differential expansion required to form the desired non-round container.

REFERENCES:
patent: 3775524 (1973-11-01), Seefluth
patent: 3790319 (1974-02-01), Hudson et al.
patent: 3950459 (1976-04-01), Seefluth
patent: 5035603 (1991-07-01), Unterlander et al.
patent: 5292243 (1994-03-01), Gibbemeyer
patent: 5516274 (1996-05-01), Maggert
patent: 5681521 (1997-10-01), Emmer et al.

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