| 摘要 |
A multilayer structure based on polyamides, comprising: a first layer (1) formed from a polyamide P1 or from a blend of a polyamide P1 and a polyolefin PO1 having a P1 polyamide matrix, optionally, a layer (2a) formed from EVOH; a layer (2) formed from a blend of PA-6/12 copolyamides, one comprising by weight more 6 than 12 and the other more 12 than 6; a layer (3) formed from a polyamide P3, it being possible for P1 and P3 to be identical or different, the layers (1), (2), (2a) and (3) being successive and adhering to one another in their respective contact regions.
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