| abstract |
A multilayer structure based on polyamides, comprising:n a first layer ( 1 ) formed from a polyamide P 1 or from a blend of a polyamide P 1 and a polyolefin PO 1 having a P 1 polyamide matrix, optionally, a layer ( 2 a ) 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 P 3 , it being possible for P 1 and P 3 to be identical or different, the layers ( 1 ), ( 2 ), ( 2 a ) and ( 3 ) being successive and adhering to one another in their respective contact regions. |