在薄紙印刷的過程中，我們經(jīng)常會(huì)遇到這樣的場(chǎng)景:印版在橫向尺寸上偶爾會(huì)出現(xiàn)高度偏差，偏差正常情況下不足1mm，但有時(shí)會(huì)高達(dá)3 ~ 4mm。離單元越遠(yuǎn)，交叉疊印的偏差越大。
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.
如果烘箱加熱溫度越高，紙張?jiān)谒謸]發(fā)越多，紙張變形收縮幅度越大，打印下的色彩就會(huì)出現(xiàn)套印不準(zhǔn)的情況。紙吸濕有兩個(gè)方面,一個(gè)是開卷部分,網(wǎng)絡(luò)在開卷,頭部的紙,紙張涂層前多少會(huì)阻礙一些水分,和是受水分影響更多,在正常情況下,本文將增加2% ~ 3%的水分。其次，一開始都提倡綠色印刷，水性油墨也逐漸迷失在凹版印刷中，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.
凹版印刷機(jī)的印袋速度非?？?，干燥溫度非常高，紙張的溫度基本保持不變，如何吸濕?
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?
濟(jì)南手提袋印刷廠處理后的薄紙印刷膨脹是適當(dāng)?shù)倪M(jìn)度印刷速度，只是降低了加熱溫度，增加了不必要的熱風(fēng)干燥，油墨不抗粘連，不褪色。另外，紙張張力會(huì)使紙張寬度在紙張傳遞過程中發(fā)生變化，導(dǎo)致橫向套印。
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
濟(jì)南金鼎
