Packaging machine

Details Packaging machine Packaging machine

B - Operations, Transporting

65

B

156/2.13

B65B 53/02 (2006.01) B29B 13/02 (2006.01) B65B 47/02 (2006.01) B29C 35/02 (2006.01)

Patent

CA 1174582

PACKAGING MACHINE ABSTRACT OF THE DISCLOSURE: A packaging machine which has a station in which a thermoplastic packaging foil is heated to its thermoplastic state` by contacting with the surface of a heating plate. The contacting surface of the heating plate has a plurality of raised zones adjacent to and surrounded by interconnected retracted zones which together form a venting channel for preventing the inclusion of any residual air between the foil and the contacting surface of the heating plate. The raised zones are generally convex in shape, with continuous curvature towards the retracted interconnected and surround- ing zones so that, in use, the foil may be applied across its total surface on the contacting surface of the heating plate without inclusion of residual air therebetween, thus achiev- ing uniform heating of the packaging foil and avoiding any deformation or warping thereof.

372805

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