Flexible collapsible containers, and method of molding

Details Flexible collapsible containers, and method of molding Flexible collapsible containers, and method of molding

1977-07-22

1980-03-04

Moy, Joseph Man-Fu

Purses, wallets, and protective covers

Protective cover made of flaccid material

For a racquet

150 1, 128272, 128DIG24, B65D 3508

Patent

active

041912314

ABSTRACT:
The method of molding flexible, collapsible containers comprises extruding a tubular parison of material to be molded and sealing the outer, free end of the parison; ballooning the parison with relatively low pneumatic pressure; closing the mold about the ballooned parison to cause the edges of the parison to protrude out of the mold chamber; and sealing said parison to form said container, including the step of forming seal lines positioned laterally inwardly from the lateral edges of the parison. A novel container design is also covered.

REFERENCES:
patent: 3211144 (1965-10-01), Nehring
patent: 3215299 (1965-11-01), Coanda et al.
patent: 3519158 (1970-07-01), Anderson
patent: 3537498 (1970-11-01), Amand
patent: 3788369 (1974-01-01), Killinger
patent: 3788374 (1974-01-01), Saijo
patent: 3911918 (1975-10-01), Turner

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