为什么彩涂板表面会出现色差？

1、 油漆
1指不同 彩涂板批次或桶内油漆颜色（浅色）的差异
2油漆所有的颜料，不同的填料

三。更换 彩涂板新批号或新油漆时，从进料口延伸到回料口，有色差
4特点：从进料口一侧延伸至回料口，呈带状分布，并逐渐加宽
5解决办法：从 彩涂板油漆本身找原因
6确认：比较两批一板和实验室刮板上的一板
2、 漆膜厚度
1指因漆膜厚度不同而产生的色差
2油漆粘度，滚筒和滚筒之间的压力变化
三。不同色辊或同一板两面以上
4没有明显变化，但成交量之间的差异相对较大
5解决办法：严格控制油漆用量
6测定：注意油漆消耗量的变化
3、 粘度
1指因机器粘度低或高而引起的色差
2桶内的粘度与桶内油漆的粘度不同
三。换漆几分钟后，进料口一侧出现色带色差
4从本质上讲，粘度是高或低的，最终导致膜厚的变化
5解决方法：更换油漆几分钟后，进料口一侧出现色带色差
6注意油漆消耗
4、 极板温度
1 彩涂板指板温度高或低引起的色差
2炉温设置不合理及错边
三。现象：版面光泽度不高，MEK不合格
4同一块板有问题，不同的卷之间的差异很大
5解决方法：板温测量不规则，改变规格（差异大）来测量板温
6OK:MEK刮擦光泽
5、 冷却水
12水质不好引起的色差
22水质不好，挤压干燥辊挤压效果不好
三。现象：板面发黑，光泽度不高
4特点：表面污垢可用棉纱擦拭
5解决方法：及时更换水冷水，增强干燥辊的挤干效果
6确认：表面光泽不高，但表面污垢可用棉纱擦去，恢复原有光泽
6、 固化炉
1指梁两侧颜色不同
2固化炉传动侧和操作侧温度不均匀
三。特点：纵向比较无明显色差，横向色差大（类似两侧漆膜厚度不同）
7、 油漆混合不均匀或不牢固
1条状布在板上
2漆层引起粘度差

Why does color difference appear on the surface of color coating board?

1、 Paint
1. Refers to the difference in paint color (light color) in different batches or barrels
2. Paint all pigments, different fillers
3. When changing new batch number or new paint, it extends from the feeding port to the return port, and there is color difference
4. Features: extending from one side of feeding port to return port, it is distributed in band and widened gradually
5. Solution: find the reason from the paint itself
6. Confirm: compare the two batches of one plate and one plate from the laboratory scraper
2、 Film thickness
1. Refers to the color difference due to the different thickness of paint film
2. Viscosiy of paint, pressure change between the roller and the roller
3. More than two sides of different color rolls or the same board
4. No significant change, but the differences between volumes are relatively large
5. Solution: strictly control paint consumption
6. Determination: pay attention to the change of paint consumption
3、 Viscosity
1. Refers to the color difference caused by the low or high viscosity of the machine
2. The viscosity in the barrel is different from that of the barrel paint
3. After a few minutes after the paint change, there is a band color difference from the side of the feeding port
4. In essence, the viscosity is high or low, which ultimately causes the change of film thickness
5. Solution: after a few minutes after changing paint, there is a band color difference from the side of the feeding port
6. Pay attention to paint consumption
4、 Plate temperature
1. Color difference caused by high or low finger plate temperature
2. Unreasonable setting of furnace temperature and mischarging
3. Phenomenon: the layout gloss is not high, MEK is unqualified
4. There is  problem with the same board, and the difference between different volumes is large
5. Solution: irregular plate temperature measurement, change specification (big difference) to measure plate temperature
6. OK: MEK scratch gloss
5、 Cooling water
1. 2. Color difference caused by water no water quality
2. 2. The water quality is not good, and the squeezing effect of the squeeze drying roller is not good
3. Phenomenon: the board surface is black and the gloss is not high
4. Features: surface dirt can be wiped off by cotton yarn
5. Solution: timely replace water cooled water, and enhance the effect of squeezing dry of the drying roller
6. Confirm: the surface luster is not high, but the surface dirt can be wiped off by cotton yarn to restore the original gloss
6、 Curing furnace
1. Different colors on both sides of finger board
2. Temperature of transmission side and operation side of curing furnace is not uniform
3. Features: there is no obvious color difference in longitudinal comparison, and the transverse color difference is large (similar to the thickness of film on both sides is different)
7、 Uneven or unsound paint mixing
1. Distributed in strips on the board
2. Paint layer causes viscosity difference