Patent ID: 8080296

Claim:
A lightweight component having an aluminium parent body with reinforcing structures, the reinforcing structures being securely connected to the parent body and being composed of moulded-on thermoplastic, wherein the thermoplastic comprises polymer moulding compositions of A) from 99.99 to 10 parts by weight of polyamide and B) from 0.01 to 50 parts by weight of B1) at least one copolymer composed of at least one olefin, with at least one methacrylate or acrylate of an aliphatic alcohol with MFI (melt flow index) of not less than 100 g/10 min, the MFI being measured or determined at 190 ° C. using a load of 2.16 kg, or B2) at least one highly branched or hyperbranched polycarbonate with an OH number of from 1 to 600 mg KOH/g of polycarbonate as measured by DIN 53240, Part 2, or B3) at least one highly branched or hyperbranched polyester of A x B y type, where x is at least 1.1 and y is at least 2.1 , or B4) at least one polyalkylene glycol ester (PAGE) with low molecular weight of the formula (I) R—COO—(Z—O) n OC—R (I) in which R is a branched or straight-chain alkyl group having from 1 to 20 carbon atoms, Z is a branched or straight-chain C 2 to C 15 alkylene group, and n is a whole number from 2 to 20 , or of a mixture of B1) with B2) or of B2) with B3) or of B1) with B3) or of B1) with B2) and with B3) or of B1) with B4) or of B2) with B4) or of B3) with B4) or a ternary mixture of components B1) to B4), in each case with A), the surface of the aluminium parent body being pretreated by a process from the group consisting of acid treatment, soda treatment, amine treatment, anodic treatment, base treatment and laser treatment, and a secure interlock connection between parent body and thermoplastic being achieved by way of the pretreated surface of the parent body.