When printing, in order to make the printed products look better and more tasteful, customers often ask us if we have some processes. Jinan packaging printing company here points out two commonly used processes to make the surface brighter.

　　光在打印涂层的表面(或喷、印)上一层无色透明漆(清漆)，经过调平、干燥、加压，在打印表面形成薄而均匀的透明光层。上光包括整体上光、局部上光、光泽上光、哑光(消光)上光和特殊涂层上光。

　　Light a layer of colorless transparent paint (varnish) on the surface (or spray, print) of the printing coating. After leveling, drying and pressing, a thin and even transparent light layer is formed on the printing surface. Glazing includes overall glazing, local glazing, glossy glazing, matte (Matt) glazing and special coating glazing.

　　2. 为什么印刷品需要上光?

　　2. Why does printing need to be polished?

　　为了美化印刷品，保护印刷品，加强印刷品的宣传效果，提高印刷品的实用价值。在印刷品的表面上显得更加光滑，使入射光产生均匀的反射，油墨层更加明亮。光油在印品表面上的运用可对印品进行涂布加工。在印刷完成前，应采取适当措施保护纸张或纸板的表面。印品经过上光后，在其表面涂上一层薄膜。其适用范围如下:

　　In order to beautify the printed matter, protect the printed matter, strengthen the publicity effect of the printed matter and improve the practical value of the printed matter. It is more smooth on the surface of the printed matter, making the incident light produce uniform reflection and the ink layer brighter. The use of varnish on the surface of the printed matter can be used for coating the printed matter. Before printing is completed, appropriate measures should be taken to protect the surface of paper or paperboard. After the printing is polished, a thin film is coated on its surface. Its scope of application is as follows:

　　(1)书籍装帧，如封面、封面、插页和挂历、挂历、广告、宣传样品等，上光后可使印刷品增加光泽，色彩鲜艳。

　　(1) Book binding, such as cover, cover, inserts and calendars, calendars, advertisements, publicity samples, etc., can make the printed matter more glossy and colorful after polishing.

　　(2)包装纸制品，如精装纸盒、包装盒、纸袋、信封、商标等，经过上光处理，起到美化和保护物品的作用。

　　(2) Packaging paper products, such as hardcover cartons, packaging boxes, paper bags, envelopes, trademarks, etc., are treated by polishing, which plays a role in beautifying and protecting articles.

　　(3)文化类产品，如卡片、明信片、印花金图案等可以起到抗机械摩擦、抗化学腐蚀的作用。

　　(3) Cultural products, such as cards, postcards and printed gold patterns, can play a role in resisting mechanical friction and chemical corrosion.

　　(4)日用品、食品等。如香烟、食品、洗衣粉等商标上的光能起到防潮、防霉的作用。

　　(4) Daily necessities, food, etc. Such as cigarettes, food, washing powder and other trademarks of light can play a moisture-proof, mildew proof role.

　　(5)硬壳上压上铜箔，可使外观美观，其亮度极高，如黄金。如果铜量少与底面结合不牢固，上光后可获得良好的附着力。

　　(5) Pressing copper foil on the hard shell can make the appearance beautiful and its brightness extremely high, such as gold. If the copper content is small and the bottom surface is not firm, good adhesion can be obtained after polishing.

　　以上是济南包装印刷公司为大家介绍的相关内容，想要了解更多内容，欢迎访问网站：http://www.jindingyinshua.comThese are the relevant contents introduced by Jinan packaging printing company. If you want to know more, please visit the website: http://www.jingyinshua.com