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不干胶防伪标签印刷制作上光时有哪些注意事项

来源:http://www.njhxsfs.com/ 日期:2019-05-14 发布人:admin   为了保护不干胶标签的 印刷 图纹和提升标签的品质, 目前很多不干胶标签印刷后都选择了覆膜、上光和烫金等表面整饰处理。
  In order to protect the printing pattern and improve the quality of labels, many labels have been printed with coating, polishing and bronzing.
  不干胶标签印刷UV上光工艺注意事项
  Cautions for UV polishing process of sticker label printing一、不干胶标签的 UV 上光
  I. UV polishing of sticker labels
  上光工艺主要应用于镜面铜版纸、 铜版纸类标签的表面涂布, 目的是增加其表面的光泽 度,并达到防污、防潮湿、保护图纹的作用。根据加工方式,不干胶标签材料的上光分为单 张纸上光和卷筒纸上光,其中卷筒纸上光是不干胶标签印刷工艺中最普遍采用的方法。
  The polishing process is mainly applied to the surface coating of mirror-coated paper and copper-coated paper labels. The purpose is to increase the gloss of their surface, and to achieve the functions of anti-fouling, moisture-proof and protection of patterns. According to the processing method, the polishing of adhesive label materials can be divided into sheet paper polishing and web paper polishing, among which web paper polishing is the most commonly used method in the printing process of adhesive label.
  卷筒纸不干胶标签的上光是在轮转型标签机上进行的。 目前普遍采用 UV 上光工艺, 即:在 印刷 后的图纹表面均匀地涂布一层 UV 上光油。 对于水基墨柔印标签, 上光是必不可少的 一道工序。
  The polishing of drum paper sticker label is carried out on the wheel transformation label machine. At present, UV polishing technology is widely used, that is, a layer of UV polishing oil is uniformly coated on the printed pattern surface. For water-based ink flexographic labels, polishing is an indispensable process.
  二、进行 UV 上光工艺应注意以下有关事项:
  2. The following matters should be paid attention to in the process of UV polishing:
  1、上光油质量的检定
  1. Verification of polishing oil quality
  UV 上光油品种多,都有一定的储存周期,并且对环境有一定的要求,所以,使川用前 应检查一下上光油的颜色及其定量涂布后的干燥情况, 以及添加剂的匹配情况, 还要注意观 察与所用的印刷油墨是否有反应。一般要求先进行上光试验,而后再投入正常生产。
  There are many kinds of UV polishing oils, which have a certain storage period and have certain requirements for the environment. Therefore, we should check the color of the polishing oil and its drying condition after quantitative coating, as well as the matching of additives before using it in Sichuan, and pay attention to the reaction between the polishing oil and the printing ink used. Generally, it is required that the polishing test be carried out first and then put into normal production.
                                     不干胶防伪标签印刷制作
  2、上光油的厚度
  2. Thickness of polishing oil
  UV 上光油的流平特性不如溶剂型上光油,若涂布量太大就会使上光后的表面出现条 纹, 影响光反射效果。 涂布量过大还会使上光油干燥不彻底, 仅表层干燥, 造成复卷后粘连。
  The leveling property of UV polishing oil is not as good as that of solvent polishing oil. If the amount of coating is too large, stripes will appear on the polished surface, which will affect the light reflection effect. Excessive amount of coating will make the polishing oil not dry thoroughly, only the surface layer is dry, resulting in adhesion after rewinding.
  3、上光油粘度和表面张力
  3. Viscosity and surface tension of polishing oil上光油的粘度对其流平特性、干燥速度、 表面光泽都有影响。 要根据不同的纸张, 调整 适合的粘度。 在调控粘度的同时, 还要注意上光油表面张力的变化情况。 要使上光油的表面 张力小于 印刷 品油墨层的表面张力,这样,上光油才能完全润湿上光表面,避免出现针眼、 条痕等质量问题。
  The viscosity of polishing oil has an effect on its leveling property, drying speed and surface gloss. The suitable viscosity should be adjusted according to different paper. While controlling the viscosity, we should also pay attention to the change of the surface tension of polishing oil. To make the surface tension of polishing oil less than the surface tension of printing ink layer, so that polishing oil can completely wet the polishing surface, avoid needle eye, streak and other quality problems.
  4、速度、涂布量、压力、烘干温度
  4. Speed, coating quantity, pressure and drying temperature上光涂布速度、 涂布量、 压力和烘干温度四者是互相制约的, 需根据不同的纸张表面对 上光油的润湿、吸收情况,合理调整它们之间的关系。
  The polishing speed, amount, pressure and drying temperature are mutually restrictive. The relationship between them should be adjusted reasonably according to the wetting and absorption of polishing oil on different paper surfaces.
  5、定期检查 UV 烘干装置
  5. Regular inspection of UV drying deviceUV 烘干装置中的紫外线灯管随着使用时间的延长,有效功率在逐渐降低,一般 UV 灯 管的有效时间是 1000小时。 生产中应定期检测其有效功率, 当使用时间接近 1000小时应及 时更换。
  The effective power of the ultraviolet lamp in the UV drying device decreases gradually with the prolongation of the use time. The effective time of the general UV lamp is 1000 hours. The effective power should be tested regularly in production, and should be replaced in time when used indirectly for nearly 1000 hours.
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