| 摘要 |
A painted plastics article in the form of a vehicle Wing 11 comprises a polyolefin (e.g polypropylene) substrate 11 coated with a polyamide or polyester coating 18. The coating makes the wing suitable for subsequent painting which may be carried out on a normal vehicle paint line used to paint a metal 5 body-in-white. To promote adhesion between the substrate and the coating, the substrate includes an admixture of a compatibiliser which increases adhesion between the substrate and the coating. The compatibiliser may be maleic anhydride grafted polypropylene when the substrate is a polypropylene. When the coating is a polyester, the compatibiliser may also include a random copolymer of ethylene and glicidyl methacrylate, either alone or with a maleic anhydride grafted polypropylene. The article may be manufactured by a dual-injection-moulding process or by a blow-moulding process. |
