Patent ID: 7320818

Claim:
Multilayer manufactured articles consisting essentially of: A) a layer consisting of thermoprocessable copolymers of ethylene with chlorotrifluoroethylene, and/or tetrafluoroethylene, and with acrylic monomers of formula: CH 2 ═CH—CO—O—R 2 (a) wherein R 2 is a hydrogenated radical from 1 to 20 carbon atoms, of alkyl, linear or branched type, cycloalkyl type, or H; R 2 optionally contains Cl, O, N and/or one or more functional groups selected from —OH, —COOH, epoxide, ester or ether; wherein the (a) monomer amount is in the range of 0.01-15% by moles with respect to the sum of the monomers of ethylene and of CTFE and/or TFE and optionally containing additives selected from fillers, lubricants, pigments, fire retardants, plasticizers, and thermal and UV stabilizers; and B) a layer consisting of polyamides having an amount of —NH 2 end groups in the range of 40-300 μeq/g and optionally containing additives selected from fillers, lubricants, pigments, fire retardants, plasticizers, and thermal and UV stabilizers; wherein there is adhesion higher than 10 N/mm between the layers of A) and B), and wherein the adhesion is reached after coextrusion or coupling the layers at softening temperatures of the copolymers of layers A) and B).