B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 63/00 (2006.01) B26F 3/00 (2006.01)
Patent
CA 2433491
The present invention provides adhesive film removal methods and apparatus. The removal methods and apparatus involve apply tension over the width of the adhesive film (12), thereby removing the film from the substrate (14) along the release line (16) that extends over the width of the film. The methods and apparatus are particularly useful in removing large-scale graphic films from substrates such as truck trailers, vans, walls, signs and other large surfaces. The tension applied to the adhesive film (12) during removal is preferably uniform across the width of the film, thereby reducing the risk of the film tearing or breaking during removal. The release line (16) is advanced during removal along the length of the film (12) until the entire film is removed from the substrate (14).
L'invention concerne des procédés et appareil permettant d'enlever un film adhésif, qui consistent à appliquer une tension sur la largeur du film adhésif (12), ce qui permet de le détacher du substrat (14) le long de la ligne de décollement (16) qui s'étend sur la largeur dudit film. Ces procédés et appareil sont particulièrement utiles pour décoller des films graphiques d'envergure de substrats tels que trains routiers, fourgons, murs signaux et autres surfaces importantes. La tension appliquée au film adhésif (12) lors de l'enlèvement est, de préférence, uniforme sur la largeur dudit film, ce qui réduit le risque de déchirement ou de rupture du film pendant l'enlèvement. La ligne de décollement (16) progresse, pendant l'enlèvement le long de la longueur du film (12), jusqu'à enlèvement du film entier du substrat (14).
Anderson Conrad V.
David John R.
Steelman Ronald S.
3m Innovative Properties Company
Smart & Biggar
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