Method of vacuum thermoforming a container

Details Method of vacuum thermoforming a container Method of vacuum thermoforming a container

2007-06-19

2007-06-19

Lee, Edmund H. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Starting material is nonhollow planar finite length preform...

C264S163000, C264S318000, C264S334000, C425S443000, C425S444000, C425S388000

Reexamination Certificate

active

10051566

ABSTRACT:
A method of thermoforming shells so that their cut lips face inward toward the shells permits the production of a number of novel thermoformed products having superior nesting and de-nesting qualities and having the ability to fit together to produce a variety of closed shell forms.

REFERENCES:
patent: 3418690 (1968-12-01), Edwards
patent: 4495135 (1985-01-01), White
patent: 4822553 (1989-04-01), Marshall

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