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机组式柔印机上实现水墨印刷薄膜的注意事项!
作者:admin 来源:http://www.sdhzyw.com 发布时间:2019-9-19 18:01:02 浏览次数:81

环保的压力加快了国内薄膜柔印水墨的研发与应用,柔印将在这个市场倒逼下迎来新的发展机遇。但济南彩色设计印刷提示大家,机组式柔印机械想要实现水墨印刷薄膜,在下面这几个方面仍要做出改善!

The pressure of environmental protection has accelerated the development and application of domestic film flexo ink. Flexo printing will usher in new development opportunities under the pressure of this market. But Jinan color design printing prompts you that the unit flexo printing machine wants to achieve ink printing film, in the following aspects still need to be improved!

首先,由于没有卫星式机型中调增大的风险,用机组式机型印薄膜是一个不错的选择。但国内的机组式柔印机大多印刷纸张,习惯了大张力条件下的调节,改换薄膜后张力控制的调节必须很细心,以前用手拍一下纸带松紧就可判定张力大小的操作习惯,很可能不适应。

First of all, because there is no increase in the risk of satellite type adjustment, it is a good choice to use machine type printing film. However, most domestic flexo printers are used to adjusting under the condition of large tension. The adjustment of tension control after changing the film must be very careful. The operation habit of determining the tension size can be determined by patting the tape tightly before, which may not be suitable.

必须注意单位线张力概念。在极限条件下按满幅宽度算出大或小单位线张力,然后根据所用薄膜的种类、厚薄以及宽度,算出放卷张力、进料张力、出料张力,以及收卷张力。这同凹印薄膜印刷很相似,触类旁通。

We must pay attention to the concept of unit line tension. Under the limit condition, the tension of large or small unit line can be calculated according to the full width. Then, according to the type, thickness and width of the film used, the unwinding tension, feed tension, discharge tension and winding tension can be calculated. This is very similar to gravure film printing.

济南彩色设计印刷

由于因环保要求使用水墨,很担心薄膜水墨干燥比较慢,因此想把原先机组式柔印机的下走纸结构改为上走纸。这样,烘道翻到机身之上,外形同凹印机很相似。这种改善是合理的,因为上走纸,整机的重心往下移,机器在高速运转中更稳定。烘道也可加长,干燥效果更好。但是必须注意一条:当薄膜印刷后出烘道遇到的第一根转角导辊,请注意表面磨擦系数,不能太粗糙。不然,水墨成膜尚未彻底固化,墨膜较嫩,过于粗糙的导辊表面,容易将墨膜拉伤。

Because of the requirement of environmental protection to use ink, I am worried about the slow drying of thin film ink, so I want to change the down paper structure of the original unit flexo press to up paper. In this way, the dryer runner turns over the fuselage, and the shape is very similar to gravure press. This improvement is reasonable, because when the paper is moved up, the center of gravity of the whole machine moves down, and the machine is more stable in high-speed operation. The drying path can also be lengthened, and the drying effect is better. But we must pay attention to one thing: when the first corner guide roller is encountered in the drying path after thin film printing, please pay attention to the surface friction coefficient, not too rough. Otherwise, ink film has not been completely cured, ink film is tender, too rough guide roller surface, easy to pull ink film.

机组式机型水墨印刷薄膜,可同凹印采用相同的薄膜。只要凹印能达到的套准精度,机组式柔印同样能达到。因为这两种机型的结构大同小异,对薄膜的张力控制要求相差不多。而且,由于柔印压力比凹印压力小许多,由正压力造成的反向摩擦力也相差许多,柔印薄膜料卷的补偿比凹印的更小许多,因此,凹印传动与薄膜补偿中的经验数据,可能比柔印的数据要模糊得多。这是柔印的有利之处。但若一定要在机组式机型上印得比凹印更薄,这有一定难度。

Unit type ink printing film, can use the same film as gravure printing. As long as gravure printing can achieve the alignment accuracy, unit flexo printing can also achieve. Because the structures of the two models are similar, the requirements for tension control of thin films are similar. Moreover, because flexographic pressure is much lower than gravure pressure, the reverse friction caused by positive pressure is much different, and the compensation of flexographic film volume is much smaller than gravure printing, the empirical data of gravure transmission and film compensation may be much more ambiguous than that of flexographic printing. This is the advantage of flexo printing. But if you have to print thinner than gravure on the unit model, it will be difficult.

小编在这里衷心的感谢大家的阅读,以上的精彩内容来自:济南彩色设计印刷,欢迎大家关注我们:http://www.sdhzyw.com,我们会定期发布更多的行业资讯!

Xiaobian here sincerely thanks you for reading, the above wonderful content comes from: Jinan color design printing, welcome to pay attention to us: http://www.sdhzyw.com, we will regularly release more industry information!