Process for sealing glass container openings

Details Process for sealing glass container openings Process for sealing glass container openings

1982-01-25

1984-04-10

Dawson, Robert A.

Food or edible material: processes, compositions, and products

Processes

Packaging or treatment of packaged product

53478, 156 69, 156 82, 156321, 1565833, 215232, 215347, 215349, 215DIG2, 426397, 428 35, 428349, B65B 728

Patent

active

044421290

ABSTRACT:
In the sealing of a glass container containing a product such as a food product by means of a cover comprising a metal foil having on one surface thereof a sealant layer of a thermoplastic resin, the opening end of the container is preheated, and the cover is placed on the opening end, after which the cover is pressed against the opening end successively by a heating plate and a separate pressing plate. By this process, a positive seal and a high sealing process efficiency are obtained even when the container content is a product such as a heated liquid food product and even when the rim surface of the opening end of the container has some projecting irregularities.

REFERENCES:
patent: 4095390 (1978-06-01), Knudsen
patent: 4222974 (1980-09-01), Smith
patent: 4260438 (1981-04-01), Dembicki et al.
patent: 4297161 (1981-10-01), Graffin
patent: 4390552 (1983-06-01), Niwa

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