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印花彩板的色差影响因素

返回列表 来源: 发布日期: 2021.03.11

印花彩板的色差影响因素

1基底
印花彩板不同大小的锌花在基体上也会影响色差。晶界会形成许多不同尺寸的小坑,影响板面色差。对于浅色,色差特别明显,选择无锌花或小锌花的基质。

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2涂层
印花彩板由于涂层混合不均匀或涂层在不同桶中的粘度差异较大,涂层从进料口侧延伸到料盘回油口方向,形成色差带。此外,改变油漆的颜色,特别是色彩对比度较大的两种颜色,由于清洗不干净,会造成色差。
三。化学涂层处理
化学涂装工艺不当,导致化学涂层过厚,干印花彩板燥后板温不足。如果涂层辊体损坏,干燥后会形成黄色斑块,导致彩铝卷色差,特别是浅色。
生产中,印刷板冷却水应保持适当溢流,及时去除冷凝挥发份,避免色差。

1. Substrate

The color difference is also affected by the different size of zinc flower on the substrate. Many small pits with different sizes will be formed at the grain boundary, which will affect the color difference of the plate surface. For the light color, the color difference is particularly obvious,  the substrate without zinc flower or small zinc flower is selected.
2. Coatings
Due to the uneven mixing of the coating or the great difference in the viscosity of the coating in different barrels, the coating extends from the side of the feed port to the direction of the return port in the material pan, resulting in a color difference band. In addition, changing the color of paint, especially the two colors with large color contrast, will cause color difference due to unclean cleaning.
3. Chemical coating treatment
Improper chemical coating process leads to too thick chemical coating and insufficient plate temperature after drying. If the coating roller body is damaged, yellow patches will be formed after drying, resulting in color difference of color aluminum coil, especially light color.
In production, the cooling water of printing plate should be kept overflow properly, and the condensed volatiles should be removed in time to avoid color difference.

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