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包装印刷的上光方式有哪些?

  (1)联机上光

  (1) On-line polishing

  联机上光则直接将上光机组连接于印刷机组之后,即印刷、上光在同一机器上进行,速度快,生产效率高,加工成本低,减少了印刷品的搬运,克服了由喷粉所引起的各类质量故障,是今后的发展方向。但联机上光对上光技术、上光油、干燥装置以及上光设备的要求很高。

  On-line polishing directly connects the polishing unit to the printing unit, that is, printing and polishing are carried out on the same machine, which has the advantages of high speed, high production efficiency, low processing cost, reduced the handling of printed matter, overcome various quality failures caused by powder spraying, and is the future development direction. But on-line polishing requires high polishing technology, polishing oil, drying equipment and polishing equipment.

  (2)脱机上光

  (2) Offline polishing

  脱机上光采用专用的上光机对印刷品进行上光,即印刷、上光分别在各自的专用设备上进行。这种上光方式比较灵活方便,上光设备投资小,较适合专业印后加工生产厂家使用。但这种上光方式增加了印刷与上光工序之间的运输转移工作,生产效率低。

  Off-line polishing uses a special polishing machine to polish the printed matter, that is, printing and polishing are carried out on their own special equipment. The polishing method is flexible and convenient, and the investment of polishing equipment is small. It is more suitable for professional post-press processing manufacturers. However, this way of polishing increases the transfer work between printing and polishing processes, resulting in low production efficiency.

  按上光产品类型分类可分为:全幅面上光、局部上光、消光上光以及艺术上光等。

  According to the types of polishing products, it can be divided into: full-width polishing, partial polishing, extinction polishing and artistic polishing.

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  (1)全幅面上光

  (1) Full-width illumination

  全幅面上光的主要作用是对印刷品进行保护,并提高印刷品的表面光泽。全幅面上光一般采用辊涂上光的方法进行。

  The main function of full surface gloss is to protect the printed matter and improve the surface gloss of the printed matter. In general, roll coating is used to gloss the whole surface.

  (2)局部上光

  (2) Local polishing

  局部上光一般是在印刷品上对需强调的图文部分进行上光,利用上光部分的高光泽画面与没有上光部分的低光泽画面相对比,产生奇妙的艺术效果。局部上光采用印刷上光的方法进行,其中采用丝网印刷方式上光得到的膜层较厚,效果较其他方式明显,且成本较低,目前在国内使用得较多,但其生产效率一般较低。

  Local polishing is generally used to polish the image and text parts that need to be emphasized in the printed matter. The high gloss picture of the polishing part is compared with the low gloss picture of the non-polishing part, which produces wonderful artistic effect. Local polishing is carried out by printing, in which the film layer obtained by screen printing is thicker, the effect is more obvious than other methods, and the cost is lower. At present, it is widely used in China, but its production efficiency is generally lower.

  (3)消光上光

  (3) Extinction and polishing

  消光上光采用的是UV哑光油,与普通上光的效果正相反,它是降低印刷品表面的光泽度,从而产生一种特殊效果。由于光泽度过高对人眼有一定程度的刺激,因此,消光上光是目前较流行的一种上光方式。

  Ultraviolet matte polishing oil is used for extinction polishing. Contrary to ordinary polishing, it reduces the gloss of the printed surface and thus produces a special effect. Extinction polishing is a popular way of polishing at present because of the stimulation of excessive gloss to human eyes to a certain extent.


 
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