Internally pressurized package with heat-sealable closure member

Details Internally pressurized package with heat-sealable closure member Internally pressurized package with heat-sealable closure member

1986-03-04

1987-12-29

Lowrance, George E.

Special receptacle or package

Including ancillary article contacting medium

Gas medium

53479, 2063159, 220209, 383103, B65D 8120

Patent

active

047154942

ABSTRACT:
A pressure-tight packaging, intended particularly for tennis balls, has an opening (3) which is adapted to be sealed by a closure member (4) upon pressurizing the container. Closure member (4) is of substantially planar configuration and is made of a plastics material, which is first warmed by the pressurizing gas on filling the container and is then forced into abutment with the container wall by the gas pressure so as to become welded or glued to the container wall and thus to seal the opening (3).

REFERENCES:
patent: 2835596 (1958-05-01), Kaufman
patent: 2870954 (1959-01-01), Kulesza
patent: 3026656 (1962-03-01), Rumsey, Jr.
patent: 3268152 (1966-08-01), Swartz
patent: 3584671 (1971-06-01), Kampa
patent: 3952869 (1976-04-01), Sanson
patent: 4134535 (1979-01-01), Barthels et al.
patent: 4310118 (1982-01-01), Kisida et al.
patent: 4384646 (1983-05-01), Sakamoto et al.
patent: 4420015 (1983-12-01), Blaser

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