Method and apparatus for heat sealing

Details Method and apparatus for heat sealing Method and apparatus for heat sealing

B - Operations, Transporting

29

C

226/67, 154/29.0

B29C 27/02 (1980.01)

Patent

CA 1157755

Application of James L. Hutcheson (Docket No, 6825) For UNITED STATES LETTERS PATENT On METHOD AND APPARATUS FOR HEAT SEALING ABSTRACT OF THE DISCLOSURE A method and apparatus for 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 when they are closed, such that sealing pressure is not applied to the pouch. Thereafter, the pouch is positioned between a pair of chilled sealing bars and the chilled bars are closed 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.

352311

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