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透明不干胶标签印刷之压力与晕影问题?

来源:http://www.shengfengyinshua.com/ 日期:2019-12-03 发布人:admin   一、压力问题
  I. pressure
  关于透明不干胶标签印刷质量,印刷压力对印刷质量影响很大。在有效印刷区域内保持均匀恒定的印刷压力,不仅能使印刷品墨色均匀,色差小,也能使印迹尺寸稳定。平压平型印刷机能够获得的印刷压力。但由于它存在的制造精度印版平整度的问题,以及不干胶基材厚薄不可能达到完全均匀,致使压力不均,影响了印刷质量。解决压力不均匀的措施一个是做衬垫,哪里压力小,就把哪里的工作台下部垫起来;一个是适当降低柔性版的硬度。但降低柔性版的硬度是有限的,如果柔性硬度过低,会使图文几何尺寸向外扩张,使细小字体容易模糊。进行大面积印刷时,印刷压力的问题是不太容易解决的,对此我们借用烫金时采用的方法,即在工作台上垫一层晒制175线网纹、硬度为90°的硅橡胶版,这样可以解决排气和局部压力不足的问题。
透明不干胶标签印刷厂家
  As for the printing quality of transparent self-adhesive label, the printing pressure has a great influence on the printing quality. To maintain a uniform and constant printing pressure in the effective printing area can not only make the ink color uniform and the color difference small, but also make the print size stable. The flat press can obtain the maximum printing pressure. However, due to the problems of plate flatness in manufacturing accuracy and the fact that the thickness of adhesive substrate cannot be completely uniform, the pressure is uneven, which affects the printing quality. One of the measures to solve the uneven pressure is to make a pad, where the pressure is small, the lower part of the workbench will be padded up; the other is to properly reduce the hardness of the flexible version. However, it is limited to reduce the hardness of the flexible version. If the hardness is too low, the geometric size of the text will expand outwards, making small fonts easy to blur. When printing in large area, the problem of printing pressure is not easy to solve. To solve this problem, we use the method used when stamping, that is, we pad a layer of 175 lines of screen pattern on the workbench, and the hardness is 90 ° silicon rubber plate, which can solve the problem of insufficient exhaust and local pressure.
  二、晕影
  Two, dizzy
  有时不干胶产品上会出现云雾状的影子,这主要是匀墨不均造成。平压平不干胶印刷机的匀墨辊是一个直径为150mm可以轴向串动的镀铬铁辊,它的作用是从墨斗辊和传墨辊上接受油墨并把油墨匀匀调配,再传送给着墨辊,串墨辊失去串墨作用很容易形成晕影。另外,着墨辊是由软质的丁腈橡胶硫化制成,如果不注意保养,使着墨效果下降,也会造成晕影,解决晕影就是解决匀墨不均问题,可适当增加给墨量。
  Sometimes there will be cloud like shadow on the adhesive products, which is mainly caused by uneven ink. The uniform ink roller of the press is a chromium plated iron roller with a diameter of 150 mm, which can move in series axially. Its function is to receive ink from the ink bucket roller and the ink transfer roller, mix the ink evenly, and then transfer it to the ink roller. If the ink roll loses the function of inking, it is easy to form a faint. In addition, the inking roller is made of soft nitrile rubber vulcanized. If you don't pay attention to maintenance, the inking effect will be reduced, which will also cause haze. To solve haze is to solve the problem of uneven ink uniformity, and the amount of ink can be increased appropriately.

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