彩涂板出现发花的问题
天物集团专注彩涂卷行业17年——彩涂板出现发花的问题_草纹彩钢板定制价格请拨打网站上方电话咨询
1、 油漆原因
1.指油漆本身的材料提取不良
2.形成原因：当线速度增粘辊和辊涂之间时，板材表面容易开花。
3.形状：水纹或条状
4.规律性：没有具体的位置和规律。在反向涂布过程中，从材料托盘中的漆幕观察漆幕或观察粘合辊的状态
5.特点：漆膜厚度不均匀
6.解决方案：
降低粘辊速度
增加粘度
减速
评论；漆蜡含量比例不当，浅色饰面板表面有水印图案（片状）
2、 浮动颜色（光泽线）
1.油漆本身所含的颜料会漂浮在油漆表面，因为它已经很长时间没有被搅拌了
2.形成原因：由于材料托盘中的油漆流动不足，油漆中密度低的颜色浮出表面
3.形状：斑点或色差条
4.规则：靠近进料口
5.特点：膜厚无明显变化
6.解决方案：
不规则混合盘
加挡板
提高喷漆速度，使材料托盘中的油漆尽快返回
改变进料口或溢流口的位置，改变溢流方式
3、 涂布辊
1.涂布辊在使用或研磨过程中有痕迹或滚筒痕迹
2.原因：
使用中的问题
研磨机操作不当
搬运过程中的伤害
3.形状：点，线性
4.规则：没有具体位置，但位置保持不变。间隔是涂布辊的周长
5.特点：膜厚差，间隔分布规则
6.解决方案
启动机器前，确定涂布辊的平整度
严格控制磨床
1、 Paint reason
1. It refers to the poor material withdrawal of the paint itself
2. Cause of formation: when the linear speed increases, the roll speed ratio remains unchanged, and the roll sticking speed increases, and the paint in the material tray is prone to faults. When the fault reaches between the roll sticking and the
roll coating, the plate surface is prone to flower.
3. Shape: water grain or strip
4. Regularity: there is no specific position and regularity. Observe the curtain from the paint curtain in the material tray or observe the state of the bonding roller during reverse coating
5. Features: uneven film thickness
6. Solution:
Reduce the speed of sticking roller
Increase viscosity
Reduce speed
remarks; The proportion of paint wax content is improper, and there is watermark pattern (flake) on the surface of the light facing plate
2、 Floating color (gloss line)
1. The pigment contained in the paint itself floats on the paint surface because it has not been stirred for a long time
2. Cause of formation: due to insufficient flow of paint in the material tray, the color with low density in the paint floats out of the surface
3. Shape: speckled or color difference bar
4. Rule: close to the feeding port
5. Features: no obvious change in film thickness
6. Solution:
Irregular mixing tray
Add baffle
Increase the painting speed to make the paint in the material tray return as soon as possible
Change the position of feeding port or overflow port and change the overflow mode
3、 Coating roller
1. There are marks or drum marks on the coating roller during use or grinding
2. Causes:
Problems during use
Improper operation of grinder
Injury during handling
3. Shape: point, linear
4. Rule: there is no specific position, but the position remains unchanged. The interval is the circumference of the coating roll
5. Features: bad film thickness and regular interval distribution
6. Solution
Determine the flatness of the coating roller before starting the machine
Strictly control grinding machine
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