| 摘要 |
An automobile headlamp reflector is produced by successive injections of a plastics material comprising a first, internal layer of polyamide forming a skin, a second layer of a charged polyamide with 50+/-5% mineral and/or organic filler forming a supporting structure, and a third, external layer of polyamide, said first and third layer forming skin surrounding said supporting structure. The ratio EPI/ES in the optical zone of the reflector is such that the surface does not display a local variation greater than 0.002/mm; EPI and ES being respectively the thicknesses of the first, internal layer and the supporting structure.
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