预涂钢板卷是通过对热浸镀锌钢板、镀锌钢板或铝板进行表面化学处理(涂层),然后进行烘烤和固化而获得的产品。预涂镀锌钢卷的总厚度由基础钢-涂层-底漆-面漆-保护层厚度组成。顶漆厚度为10-25μm,背漆厚度为5-20μm。基础钢厚度越薄,ppgi钢卷的价格越高,因为加工成本越高。通常,油漆涂层材料为聚酯(PE),背漆颜色为白灰色。颜色可根据RAL色卡或客户样品定制。可以制作特殊图案,如木纹、花卉图案、迷彩、砖。1) PPGI也称为预涂镀锌钢卷和彩色涂层钢卷,具有热浸镀锌钢板基材。2) PPGL也称为预涂镀锌钢板卷,以…
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