Heat-sealing device for thermoplastic films

Details Heat-sealing device for thermoplastic films Heat-sealing device for thermoplastic films

B - Operations, Transporting

29

C

154/29.14

B29C 65/74 (2006.01) B29C 65/00 (2006.01) B29C 65/22 (2006.01) B65B 51/30 (2006.01) B29C 65/78 (2006.01)

Patent

CA 1314800

ABSTRACT OF THE DISCLOSURE An apparatus is disclosed for sealing and simultaneously cutting through at least two layers of thermoplastic film. The apparatus includes a pair of sealing jaws and means for closing the jaws, the first of said jaws having an electrical impulse sealing element mounted thereon, said heat sealing element being covered with a release sheet, the second of said jaws having a resilient pad mounted thereon, said resilient pad being covered with a release sheet, the improvement wherein there is a heat dispersing foil between the resilient pad and the release sheet which covers said pad. The apparatus may be used on form and fill packaging machines to improve the life of release sheet, e.g. a polytetrafluoroethylene-coated glass fibre tape. DC-3057

609853

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