Method of making blown plastic containers

Details Method of making blown plastic containers Method of making blown plastic containers

1974-01-30

1976-04-06

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Reactive gas or vapor treatment of work

Work is organic material

264 98, 264296, B29C 1707

Patent

active

039490343

ABSTRACT:
This invention relates to a method of making a blown plastic containeer having an arcuate pressure bottom configuration, preferably provided with integrally formed multiple thickness support walls or "skirts" surrounding the bottom.
The method of making such containers is by blowing the container in a blow mold having telescopically movable portions for physically contacting and deforming a blowable parison or preform positioned in the blow mold. The parison contact and deformation aids in forming the bottom and/or the surrounding support walls, while providing a favorable blow-up ratio during the blowing operation. Further, the method can be carried out under conditions causing multi-axial orientation in the final container.

REFERENCES:
patent: 2715751 (1955-08-01), Weber
patent: 3050773 (1962-08-01), Hagen
patent: 3214797 (1965-11-01), Ollier et al.
patent: 3234310 (1966-02-01), Edwards
patent: 3275726 (1966-09-01), Rudolph
patent: 3754851 (1973-08-01), Reilly et al.
patent: 3819789 (1974-06-01), Parker

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