B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 13/12 (2006.01) B29C 65/02 (2006.01) B29C 65/08 (2006.01) B32B 3/24 (2006.01) E02D 31/00 (2006.01)
Patent
CA 2487325
Waterproofing material, as used to line ponds, lakes and landfill waste deposit sites, comprises a core layer (10) which incorporates swellable bentonite clay arranged between respective carrier layers (12, 14). In order to reduce relative slippage between the carrier layers (12, 14) and the core (10), the carrier layers (12, 14), which are preferably of polypropylene, polyethylene or PVC are connected to each other by ultrasonic welding along lines or at intervals. This may be either direct welding (18) of the layers (12, 14) to each other, or each layer (12, 14) may be welded (at 26) to a flexible perforate reinforcement (16) which is embedded in the core (10).
L'invention concerne un matériau imperméabilisant, utilisé par exemple comme garniture dans les bassins, les lacs et les sites d'enfouissement, qui comprend une couche centrale (10) renfermant de l'argile de bentonite gonflable entre des couches supports respectives (12, 14). Afin de réduire le glissement relatif entre les couches supports (12, 14) et la couche centrale (10), on relie entre elles ces couches supports (12, 14), qui sont de préférence en polypropylène, polyethylene ou PVC, par soudure ultrasonore le long des lignes ou à différents intervalles. On peut procéder soit par soudure directe (18) des couches (12, 14) entre elles, soit par soudure (en 26) de chaque couche (12, 14) sur un renforcement perforé flexible (16) incorporé à la couche centrale (10).
Flynn Bryan Nicholas
Rostami Shamsedean
Cameron Ip
Rawell Group Holdings Limited
LandOfFree
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