Method for heat sealing

Details Method for heat sealing Method for heat sealing

1980-07-18

1983-07-19

Gallagher, John J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

53479, 156281, 1563084, 1563099, 156322, 156380, 156498, 156499, 493190, 493206, 493308, B32B 3100, B32B 3120

Patent

active

043942040

ABSTRACT:
A method and apparatus for hermetically heat sealing flexible containers, and particularly pouch-like containers, is disclosed. A filled pouch is positioned between a pair of heated bars, with the bars being constructed and arranged to maintain a gap therebetween, such that pressure is not applied to the pouch. Thereafter, the pouch is positioned between a pair of chilled sealing bars and the chilled bars are constructed and arranged to apply sealing pressure to the edge of the pouch, where the edge region of the pouch is sealed and cooled. If desired, a plurality of gapped heated bar stations may be provided prior to the chill bar position.

REFERENCES:
patent: 2984598 (1961-05-01), Gobalet
patent: 3519515 (1970-07-01), Jennings
patent: 3536567 (1970-10-01), Harrison

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