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薄纸印刷出现"皱"的问题要如何解决?
作者:admin 来源:http://www.sdhzyw.com 发布时间:2019-6-25 16:43:49 浏览次数:463
目前,国内引进的百余台机组式柔印机中,只要一小局部用于印刷不干胶资料,大局部柔印机印刷的产品都是薄纸类印品。简直一切印刷过薄纸的用户都反映会遇到一系列问题,这些问题能够用以下几个字来概括,即“皱”、“缩”、“翘”、“静电”及“断纸”。下面,济南宣传单页印刷厂家将对薄纸印刷呈现"皱"的问题产生的缘由及处理办法进行细致讨论。
At present, as long as a small part of the more than 100 set flexo printers imported in China are used for printing non-adhesive materials, most of the products printed by flexo printers are thin paper. Almost all users who have printed thin paper report that they will encounter a series of problems, which can be summarized in the following words: wrinkle, shrink, warp, static electricity and paper breakage. Next, Jinan Publicity sheet printing manufacturers will give a detailed discussion on the causes and treatment of the problem of "wrinkles" in thin paper printing.
1.毛病缘由:张力过大
1. Cause of trouble: excessive tension
普通情形是机器某一部分张力过大,则在该区域产生褶皱,并影响后面的局部。比方:有时开卷张力设置过大,就在开卷局部产生褶皱,而且越到后面起皱越严重,以至断纸。有的用户原来订购的柔印机是厚纸型,一旦用来印刷薄纸,很容易起皱,这时褶皱普通是发作在柔印机的中后部。
In general, if the tension of a part of the machine is too large, it will produce folds in the area and affect the later part. For example: Sometimes when the tension setting is too large, wrinkles will occur in the part of the uncoiling, and the more serious the wrinkles will become in the back, even the paper will be broken. Some users originally ordered the flexo press is thick paper, once used to print thin paper, it is easy to wrinkle, then the wrinkles usually occur in the middle and back of the flexo press.
处理办法——经过降低各局部的张力设定值能处理此问题,但更基本的处理办法是增购一套合适印刷薄纸的辊子,包括压印滚筒及进纸、出纸张力辊等。
Solutions - This problem can be solved by reducing the tension settings of each part, but the most basic solution is to buy an additional set of rolls suitable for printing thin paper, including press rollers, paper feeding rolls, paper feeding rolls, etc.
2.毛病缘由:纠偏安装的偏转角渡过大
2. Cause of the defect: too large deflection angle of rectification installation
纸张在纠偏安装处的张力情况是一侧紧、另一侧松,因而容易产生褶皱。若是开卷局部,则会在进纸张力辊上发现有"树皮"皱的现象,当然是在纸张较松的一侧。
The tension of the paper at the deviation correction installation is tight on one side and loose on the other, so it is easy to crease. If the uncoiling part is partial, the phenomenon of "bark" wrinkles will be found on the roll in the paper, of course, on the loose side of the paper.

处理办法——让纠偏"本人摆正"(按Servo-Center键),慢车走一段纸,调整好适宜的纸张横向位置并稳定下来后,停车,再调整纠偏安装的电眼,使其与当前需监控的纸边位置对正,这时将纠偏系统转换到"自动"状态工作。这样做就能够使纠偏安装在"自动"工作过程中偏转的角度更小,使发作褶皱的可能性降到更小。而这时要将纸卷的横向位置做一明显的记号,换下一卷纸的时分一定要将位置对正。

济南宣传发单页印刷

How to deal with this problem - let the corrector "put himself right" (press the Servo-Center key), take a piece of paper slowly, adjust the suitable paper transverse position and stabilize it, stop, and then adjust the corrector installed eye to align it with the current paper edge position to be monitored. At this time, the correcting system will be transformed to the "automatic" state. By doing so, the deflection angle of the correcting device during the "automatic" operation can be minimized, and the possibility of occurrence of folds can be minimized. At this time, the horizontal position of the paper roll should be marked clearly. When changing the next roll of paper, the position must be corrected.
3.毛病缘由:压印滚筒式导纸辊外表有异物(如大的干墨块)或凹痕;个别辊子的平行度超差等等。
3. Causes of the defects: foreign bodies (such as large dry ink blocks) or dents on the exterior of the impression roller type paper guide roll; excessive parallelism of individual rolls, etc.
处理方法——除了调整张力和检查机器以外,必要时还能够在该处的导纸辊外表距两个纸边约15毫米的内侧各缠两层电工胶带,以避免纸张向内的横向挪动。也能够采用带螺旋线的导纸辊,使薄纸向外伸展。但当薄纸的挺度太小且张力相对偏大时,反而会因螺旋线而起皱,因而要详细问题详细剖析。
Processing method - In addition to adjusting the tension and checking the machine, it can also wrap two layers of electrical tape on the inner side of the guide roll about 15 mm away from the two edges of the paper when necessary to avoid the paper moving inward horizontally. The paper guide roller with helix can also be used to make the paper stretch outward. However, when the stiffness of thin paper is too small and the tension is relatively large, it will wrinkle because of the spiral line, so we need to analyze the problem in detail.
此外,在用薄纸印刷时,原纸卷去掉包装后,靠近外包装外表的纸会吸收空气中的水分而呈现褶皱,当外层起皱的纸走进机器时,肯定会产生问题。
In addition, when printed on thin paper, the paper near the outer surface of the package will absorb moisture in the air and become wrinkled after the wrapper is removed from the base paper roll. When the outer wrinkled paper enters the machine, it will definitely cause problems.
以上就是济南宣传单页印刷厂家给我们总结的精彩内容了,今天就先给大家介绍到这里,如果大家还有要补充的地方,欢迎到我们的官网给我们留言评论:http://www.sdhzyw.com
These are the wonderful contents summarized by Jinan Publicity Page Printer. Today we will introduce them to you first. If you have anything to add, please leave a comment on our official website: http://www.sdhzyw.com.