在薄纸印刷的过程中，大家经常会遇到这样的场景:印版在横向尺寸上偶尔会出现高度偏差，偏差正常情况下不足1mm，但有时会高达3 ~ 4mm。离单元越远，交叉叠印的偏差越大。
In the process of thin paper printing, we often encounter such scenes: the height deviation of the plate occasionally occurs in the horizontal dimension, which is less than 1mm under normal circumstances, but sometimes as high as 3 ~ 4mm. The farther away from the unit, the greater the deviation of cross overprint.
如果烘箱加热温度越高，纸张在水分挥发越多，纸张变形收缩幅度越大，打印下的色彩就会出现套印不准的情况。纸吸湿有两个方面,一个是开卷部分,网络在开卷,头部的纸,纸张涂层前多少会阻碍一些水分,和绝对是受水分影响更多,在正常情况下,本文将增加2% ~ 3%的水分。其次，一开始都提倡绿色环保印刷，水性油墨也逐渐迷失在凹版印刷中，包括水性清漆。
If the higher the heating temperature of the oven, the more moisture volatilization of the paper, the larger the deformation and contraction of the paper, the color will be overprinted. There are two aspects of paper moisture absorption, one is the uncoiling part, the network in uncoiling, the paper at the head, how much water will be blocked before the paper coating, and absolutely more affected by water, under normal circumstances, this paper will increase the water content by 2% - 3%. Secondly, green printing was advocated at the beginning, and water-based ink was gradually lost in gravure printing, including water-based varnish.
Gravure printing machine printing bag speed is very fast, the drying temperature is very high, the paper temperature basically remains the same, how to moisture absorption?
The expansion of tissue paper printing after the treatment of Jinan handbag printing factory is the proper progress of printing speed, but reduces the heating temperature, increases the unnecessary hot air drying, and the ink does not resist adhesion and fade. In addition, the paper tension will make the paper width change in the process of paper transmission, resulting in horizontal overprinter.
The above is about tissue printing inflation introduced by Jinan handbag printing factory. For more information, please visit http://www.jingyinshua.com