B - Operations – Transporting – 26 – D
Patent
B - Operations, Transporting
26
D
B26D 7/08 (2006.01) A61L 15/42 (2006.01) B26F 1/24 (2006.01) B32B 3/10 (2006.01)
Patent
CA 2744794
A method is described for introducing perforations into a sheet (1) of laminated material that includes a layer of hydrophobic gel (4). The method involves contacting perforating elements (13) with the sheet and subjecting the sheet(1), at least in the regions contacted with the perforating elements(13), to high frequency mechanical vibrations, eg using a sonotrode (14). The hydrophobic gel (4) is most suitably a silicone gel, and the perforated laminate may be utilised in a wound dressing.
L'invention porte sur un procédé pour pratiquer des perforations dans une feuille (1) de matériau stratifié qui comprend une couche de gel hydrophobe (4). Le procédé consiste à placer des éléments de perforation (13) en contact avec la feuille et à soumettre la feuille (1), au moins dans les régions en contact avec les éléments de perforation (13), à des vibrations mécaniques haute fréquence, par exemple à l'aide d'une sonotrode (14). Le gel hydrophobe (4) est, de la manière la plus appropriée, un gel de silicone, et le stratifié perforé peut être utilisé dans un pansement.
Brightwake Limited
Fasken Martineau Dumoulin Llp
LandOfFree
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