Many Jinan label printing companies have the same problems in printing. In the process of label printing of film materials, it is easy to have ink loss in surface printing, which greatly affects the quality of printed products and even delays the delivery date. This paper summarizes and enumerates the reasons and improvement skills of common ink loss from the resume of daily printing, so as to find out a better treatment plan.

　　问题一：涂层缺陷

　　Problem 1: coating defects

　　通例薄膜分为带涂层和不带涂层二种，而薄膜涂层缺陷导致油墨掉墨的缘故也就响应分为两种环境：关于带涂层的薄膜质料，要是外貌涂层牢靠度差，会导致油墨附出力差；而无涂层薄膜质料往往由于面层与油墨连结牢度欠好，导致油墨掉墨。

　　The general film is divided into two kinds: with coating and without coating, and the reason why the film coating defects lead to ink loss is also divided into two environments: as for the film material with coating, if the appearance of the coating is poor, it will lead to poor ink adhesion; as for the uncoated film material, due to the poor connection between the surface layer and the ink, it will lead to ink loss.

　　针对涂层缺陷导致的油墨掉墨，能够通过如下方式来办理：采取面层上光油印刷处分，保护油墨上层，起到防备掉墨的用途；面层接纳电晕再处分，质料外貌电晕达因值应不低于38毫米/m，达因值低于36毫米/m则会干脆影响到印刷油墨牢靠度；面层打底涂或应用油墨附出力强的加强剂（调配比例为3%摆布），也能够进步膜类面层的着墨力；某些亚面合成纸质料由于外貌涂层具有必然纸张涂层的特征，以是不适用用3M胶带检验。

　　For ink loss caused by coating defects, it can be handled in the following ways: take varnish printing on the surface layer to protect the upper layer of the ink for the purpose of preventing ink loss; the surface layer receives corona re treatment, and the appearance corona dyne value of the material shall not be less than 38m M / m, and the dyne value less than 36mm / m will simply affect the printing ink fastness; the surface layer is applied with primer or ink The strength of the film surface layer can also be improved by adding a strong reinforcing agent (the mixing ratio is 3% swing); because the appearance coating of some sub surface synthetic paper materials has the characteristics of inevitable paper coating, it is not suitable to use 3M tape for inspection.

　　问题二：张力

　　Question 2: Tension

　　关于印刷外貌为电晕处分的薄膜质料，要到达良好的油墨润湿，达因值平时需求38毫米/m以上，低于36毫米/m就容易出现掉墨问题；同时，这种质料的达因值会随光阴而渐渐消退，出现印刷掉墨问题。这一问题的本色是张力问题。

　　As for the film material with corona treatment on the surface of printing, in order to achieve good ink wetting, the dyne value usually needs more than 38m M / m, and less than 36mm / m, which is prone to ink loss; at the same time, the dyne value of this material will gradually fade with time, resulting in ink loss. The essence of this problem is tension.

　　关于这种环境导致的掉墨，有如下几种办理计划：用有联机电晕功效的卫星轮起色，举行联机电晕处分来进步膜类质料外貌能；采取间歇印刷机能够举行外貌打底涂处分，用以进步外貌印刷附出力；当达因值出现消退时，印刷时需求用电晕加以处分，但达因值的大小并不行彻底代表油墨与面材之间的附出力，普通达因值的消退周期为3个月-6个月，以是建议尽管削减库存质料的永远存放。

　　As for the ink drop caused by this kind of environment, there are several handling plans as follows: use the satellite wheel with online corona effect to start color, hold online corona treatment to improve the appearance of membrane materials; adopt the intermittent printing machine to conduct the appearance primer treatment to improve the appearance printing adhesion; when the cause value disappears, the corona treatment is required during printing, but the cause value is large Small does not completely represent the adhesion between the ink and the surface material. The fading cycle of the common dyne value is 3-6 months, so it is recommended to reduce the storage of the stock material forever.

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