Method for making a plastic container

Details Method for making a plastic container Method for making a plastic container

1983-03-30

1985-05-28

Silbaugh, Jan

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Starting material is nonhollow planar finite length preform...

264522, 264322, 264323, B29C 1703, B29C 1704, B29D 904

Patent

active

045199779

ABSTRACT:
A tubular plastic container having a molecularly oriented sidewall portion is made by bringing the peripheral portion of a solid blank in engagement with the shoulder portion of a die, introducing the blank into a cavity of the die while compressing with a first and second plungers, such that in the former stage of the introduction, the speed is relatively low and the pressure is relatively high, and then the speed is increased at a controlled rate and the pressure is decreased, thereby forming a hollow molded piece, and then expanding the molded piece to bringing the sidewall portion thereof into contact with the inner surface of the cavity. In the similar manner a tubular plastic container having a sidewall portion formed with thick wall portions axially extending and having a relatively large wall thickness and a large curvature, and thin wall portions axially extending and having a relatively small wall thickness and a small curvature which are formed alternately in the circumferential direction, is made by using the second plunger having recesses corresponding to the thick wall portions and having open edge portions.

REFERENCES:
patent: 2854694 (1958-10-01), Mumford
patent: 3184524 (1965-05-01), Whiteford
patent: 3757718 (1973-09-01), Johnson
patent: 3849530 (1974-11-01), Wyeth et al.
patent: 4354996 (1982-10-01), Nishiyama et al.
patent: 4420454 (1983-12-01), Kawaguchi et al.

Affiliated with

Also associated with

Rating

Method for making a plastic container does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for making a plastic container, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for making a plastic container will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-868170