For the self-adhesive products after printing, online bronzing, film covering, die cutting, slitting and other operations can also be adopted. For the self-adhesive product layout with online simultaneous operation, the equipment characteristics shall be fully considered in the design, and large-area field layout overprint shall be avoided as far as possible, so that the printing brush, bronzing and film covering can obtain better results. Foil ironing process is an indispensable process for self-adhesive products, which is very popular in the market.
Copper plate self-adhesive and plastic film self-adhesive products often use electrochemical aluminum hot stamping process, which can make the finishing point and improve the added value of goods. However, if the process is improper, anodized hot stamping is prone to some quality problems, such as layout blooming, weak adhesion of aluminum foil, layout edge burr and other disadvantages, which will affect the market image of the product. Therefore, in order to ensure the quality of hot foil, the background ink should not be printed too thick, and the process should try to achieve "deep ink thin printing", that is, the hue of the ink should be appropriately deepened to make the printing ink layer thinner, which can meet the requirements of the original, and is conducive to the firm adhesion of aluminum foil, and it is not easy to produce the hot stamping disadvantage of pulling off the background ink. In order to make the hot foil layout clear, the zinc plate should be corroded properly to form a certain height difference between the hot stamping layout and the blank part, so as to prevent the blank layout from getting dirty.
Since the foil pressing pressure is slightly higher than the printing pressure, in order to avoid the edge burr of electrochemical aluminum plate caused by the compression deformation of the liner, the liner should be made of medium hard material with less deformation coefficient and good flatness, so as to ensure the hot stamping effect and make the quality of the whole batch of products consistent. In addition, if the hot stamping effect is poor and there are quality defects such as poor hot stamping, hairiness and loose adhesion, and the above conditions cannot be restrained in the process operation measures, it can be considered to replace the hot stamping foil with better quality to improve the hot stamping quality effect.
Self adhesive label paper is divided into paper-based self-adhesive label paper - usually made of smooth coated paper, matte paper, special paper, offset paper, kraft paper, aluminum foil paper, fluorescent paper and other materials; Non paper self-adhesive label materials include pet, PE, PVC, BOPP, OPP, laser film, satin and non-woven fabric.
For the identification self-adhesive of different materials, the corresponding ink shall be used for printing in the printing process. For example, for non absorbent materials, synthetic ink shall be used for printing, so as to better ensure the fastness and dryness of ink adhesion. In the die-cutting, we should also pay attention to controlling the corresponding pressure, so as to ensure the tearing and uncovering when it is easy to use. In addition, the adhesive properties of self-adhesive with different characteristics are also different. For example, the self-adhesive of hot melt adhesive has strong viscosity and is suitable for sticking to metal, glass, wood, plastic and containers containing refrigeratable food. In the process of use, it can better avoid adverse phenomena such as warping, crimping or falling off of labels.济南印刷厂讲解的内容 更多的内容 请咨询公司官网http://www.xinfengyinshua.cn/