ELECTROSTATIC POWDER COATING METHOD AND POWDER COATING MATERIAL

    公开(公告)号:US20170087589A1

    公开(公告)日:2017-03-30

    申请号:US15015696

    申请日:2016-02-04

    Abstract: An electrostatic powder coating method includes spraying a charged powder coating material including powder particles which contain a thermosetting resin and a thermosetting agent to electrostatically attach the powder coating material to an object to be coated, and heating the powder coating material which is electrostatically attached to the object to be coated to thereby form a coating film, wherein a volume average particle diameter Dc of the powder particles of the powder coating material which is electrostatically attached to the object to be coated and a volume average particle diameter Do of the powder particles of the powder coating material before being sprayed satisfy a relationship of Expression: Do×0.80≦Dc≦Do×1.20.

    COATING METHOD AND COATED ARTICLE OBTAINED BY THE SAME
    29.
    发明申请
    COATING METHOD AND COATED ARTICLE OBTAINED BY THE SAME 审中-公开
    涂料方法和涂料方法

    公开(公告)号:WO2015114990A1

    公开(公告)日:2015-08-06

    申请号:PCT/JP2014/083628

    申请日:2014-12-12

    Abstract: A coating method for forming a laminated coating film including a lower layer formed on a base material and an upper layer formed on the lower layer, the coating method comprising: a preparation step of preparing a thermosetting coating material as a lower layer-coating material for forming the lower layer and preparing a thermosetting coating material as an upper layer-coating material for forming the upper layer; a formation step of forming an uncured laminated coating film by applying the lower layer-coating material and the upper layer-coating material on the base material using a wet-on-wet technique; and a baking step of simultaneously curing the lower layer-coating material and the upper layer-coating material by subjecting the uncured laminated coating film to a baking treatment, wherein in the preparation step, the lower layer-coating material and the upper layer-coating material are selected so that an absolute value of a difference in shrinkage ratio between the lower layer-coating material and the upper layer-coating material is 2.0% or smaller at a late stage of the baking in the baking step.

    Abstract translation: 一种形成层叠涂膜的涂布方法,其包括形成在基材上的下层和形成在下层上的上层,所述涂布方法包括:制备作为下层涂料的热固性涂料的制备步骤, 形成下层并制备作为形成上层的上层涂料的热固性涂料; 通过使用湿式湿法技术将下层涂布材料和上层涂料施加到基材上来形成未固化的层压涂膜的形成步骤; 以及通过对未固化的层压涂膜进行烘烤处理来同时固化下层涂布材料和上层涂料的烘烤步骤,其中在制备步骤中,下层涂料和上层涂料 选择材料,使得在烘烤步骤的烘焙的后期阶段,下层涂布材料和上层涂布材料之间的收缩率差的绝对值为2.0%以下。

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