B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 27/28 (2006.01)
Patent
CA 2509518
A structure successively comprising a first layer of high density polyethylene (HDPE), a first tie layer, a second layer of EVOH or of a blend based on EVOH, optionally a second tie layer, a third layer of a blend comprising, by weight, the total being 100%: 50 to 90% of polyamide (A) having a conversion temperature of at most 230°C, 1 to 30% of high density polyethylene (HDPE), 5 to 30% of an impact modifier chosen from elastomers and very low density polyethylenes, at least one of the HDPE and of the impact modifier being functionalized, in all or part, the layers being coextrudable. Devices for the transfer or storage of fluids and more particularly to pipes, tanks, conduits, bottles and containers composed of the above structure in which the layer of the blend of polyamide (A) and of HDPE is in direct contact with the fluid present or transported. These devices can be manufactured by conventional techniques of the industry of thermoplastic polymers, such as coextrusion and coextrusion blow-moulding.
Bellet Gaelle
Blondel Philippe
Brule Benoit
Flat Jean-Jacques
Arkema
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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