B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 65/22 (2006.01) B29C 44/18 (2006.01) B29C 65/18 (2006.01) B65B 9/08 (2006.01) B65B 43/12 (2006.01) B65B 51/10 (2006.01) B65B 51/16 (2006.01) B65B 51/26 (2006.01)
Patent
CA 2434195
A device for sealing two plies (14a, 14b) of plastic film together generally includes an electrically conductive heating element (34) and a rotatable support cylinder (18) having an outer, circumferential surface, the cylinder being positioned in abutting relationship with the heating element (34) and capable of rotating against the heating element, which is in fixed position, along a predetermined contact arc such that less than a complete circumference of the outer surface of the cylinder is in contact with the heating element.
L'invention concerne un dispositif pour la fermeture d'un film en plastique, par scellement des deux plis de ce film, qui comprend en règle générale un élément chauffant conducteur et un cylindre support rotatif à surface circulaire externe. Le cylindre, en butée avec l'élément chauffant, peut être mis en rotation contre cet élément, lequel est fixe, et la rotation s'effectue le long d'un arc de contact préétabli, de sorte qu'une zone dont la taille est inférieure à celle de la circonférence complète de la surface externe du cylindre soit en contact avec l'élément chauffant.
Scott Suzanne
Sperry Charles R.
Sealed Air Corporation (us)
Smart & Biggar
LandOfFree
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