The invention relates to a method for coating motor vehicle wheel rims, in which a polymer priming layer (A), a polymer intermediate layer (B), a decorative layer (C) consisting of a heat-cured polymer layer with embedded flake-like metal pigments covering the visible surface of the decorative layer (C), and finally a polymer cover layer (D) are consecutively applied to the metal surface of the wheel rim. According to the invention, in order to develop this method such that the coated wheel rims achieve the appearance of polished metal without substantial extra costs, the polymer intermediatelayer (B) is produced with a high-gloss surface and the decorative layer (C) is applied to the high-gloss surface of the polymer intermediate layer (B) in the wet spraying method with a layer thickness of max. 2 [mu]m, where it is dried at ambient temperature and, before the application of the polymer cover layer (D), it is fixed to the polymer intermediate layer (B) via a thermal post-treatment in such a way that it adheres to the surface thereof with a cross-cut pull-off strength (according to DIN EN ISO 2409) of Gt=0 to Gt=2.

    本发明涉及一种涂覆机动车轮辋的方法,其中,聚合物底涂层(A)、聚合物中间层(B)、装饰层(C)以及最后聚合物覆盖层(D)依次施加到轮辋的金属表面,装饰层由包含嵌入的碎片状的金属颜料的热固化聚合物层组成,碎片状的金属颜料覆盖装饰层(C)的可见表面。根据本发明,为了发展这种方法,使得涂覆的轮辋在没有大量额外费用的情况下获得抛光金属的外观,生产具有高光泽度表面的聚合物中间层(B),并且在湿喷涂法中,装饰层(C)以最大厚度为2μm的方式施加到聚合物中间层(B)的高光泽度表面上,在环境温度下干燥,并在施加聚合物覆盖层(D)之前,通过热后处理将其固定在聚合物中间层(B)上,使其粘附在聚合物中间层的表面上,横切剥离强度(根据DIN EN ISO 2409)为Gt=0至Gt=2。


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    Title :

    Method for coating visible surface of motor vehicle wheel rims


    Additional title:

    涂覆机动车轮辋的可见表面的方法


    Contributors:

    Publication date :

    2020-07-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B05D PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL , Verfahren zum Aufbringen von Flüssigkeiten oder von anderen fließfähigen Stoffen auf Oberflächen allgemein / B60B VEHICLE WHEELS , Räder für Fahrzeuge / C09D Überzugsmittel, z.B. Anstrichstoffe, Firnisse oder Lacke , COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS




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