Package-making method and apparatus

Details Package-making method and apparatus Package-making method and apparatus

B - Operations, Transporting

65

B

156/7.1

B65B 31/02 (2006.01)

Patent

CA 1062599

ABSTRACT OF THE DISCLOSURE A method of and apparatus for vacuum skin packaging is provided. A heated, upper thermoplastic film, as held on the lower surface of a vacuum chamber is moved downwardly so as to drape the film around a product positioned on a lower thermoplastic film. This movement forms a hermetic seal between the vacuum chamber, the two films, a conveyor belt upon which the lower film rests, and a fixed vacuum plate over which the belt is moved. Enclosed within this seal are opposed sets of apertures in the belt, which apertures are aligned with the opposed openings in the plate. The space above the upper film and also around the product is evacuated, the latter occurring through the aligned apertures in the belt and the openings in the plate. The upper film is then pushed by pressure differential into skin-tight conformity with the product and into heat-sealing contact with the lower film to form a vacuum skin-package.

294501

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