B - Operations – Transporting – 31 – B
Patent
B - Operations, Transporting
31
B
B31B 1/14 (2006.01) B31B 1/36 (2006.01) B31F 1/10 (2006.01) B32B 3/12 (2006.01) B32B 3/28 (2006.01) E04B 9/00 (2006.01) E04B 9/04 (2006.01) E04B 9/06 (2006.01) E04B 9/24 (2006.01) E04C 2/34 (2006.01)
Patent
CA 2379874
A method and apparatus (10) for creasing planar material (18) includes a pair of confronting drums (12, 14) between which the material is passed with at least one of the drums having at least one electrical filament (34) thereon adapted to engage the planar material as it passeS between the drums for melting the planar material to a predetermined depth (24). The filaments are preferably quick heating and also dissipate heat quickly so that they can be activated and deactivated in short intervals so that the drums upon which the heat filaments are mounted do not heat up between the filaments.
L'invention concerne un procédé et un appareil (10) de plissage d'un matériau plan (18), dans lesquels on utilise une paire de rouleaux opposés (12, 14) entre lesquels on fait passer le matériau. Un filament électrique (34) conçu pour pénétrer dans le matériau plan à mesure que ce dernier passe entre les rouleaux, et pour faire fondre ledit matériau sur une profondeur prédéterminée (24), est prévu sur au moins un des rouleaux. Les filaments sont de préférence à chauffe rapide et dissipent rapidement la chaleur, si bien qu'ils peuvent être activés et désactivés à intervalles rapprochés, de manière que les rouleaux sur lesquels les filaments chauffants sont montés ne chauffent pas entre les filaments .
Gowling Lafleur Henderson Llp
Hunter Douglas Inc.
LandOfFree
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