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印刷烫金出现反拉的原因?

发布人:济南华政印务有限公司 发布时间:2022-01-14

一、油墨本身的黏度太低,小于电化铝箔层的黏性,在烫印时导致反拉现象。为了避免这种现象出现在印刷时选用黏度符合要求的快固着的油墨进行印刷,注意控制油墨中防黏剂的添加量,保证油墨黏度达到要求。

1、 The viscosity of the ink itself is too low, which is less than that of the electrochemical aluminum foil layer, resulting in reverse pulling during hot stamping. In order to avoid this phenomenon, select fast fixing ink with satisfactory viscosity for printing, and pay attention to controlling the addition amount of anti adhesion agent in the ink to ensure that the ink viscosity meets the requirements.
二、白墨做冲淡剂使用量过多,这种油墨与连结料之间的结合力较差,印刷后油墨中的连结料易被纸面所吸收,使颜料悬浮于纸面上产生粉化现象,烫印时会出现将印品上的墨层反拉下来的现象。
2、 Too much white ink is used as diluent. The binding force between the ink and the binder is poor. After printing, the binder in the ink is easy to be absorbed by the paper, causing the pigment to suspend on the paper, resulting in pulverization. During hot stamping, the ink layer on the print will be pulled back.
三、印品表面油墨层未干,造成印品表面油墨与纸张表面结合不牢烫印时出现反拉现象。为了避免这种情况发生一定要在印品干燥后再烫金,或采用快干型油墨或在油墨中添加适量的干燥剂。可选用电化铝分离力较低、热转移性优良的电化铝箱。
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3、 The ink layer on the print surface is not dry, resulting in the weak combination of the ink on the print surface and the paper surface, and the reverse pulling phenomenon occurs during hot stamping. In order to avoid this situation, we must bronze after the printing is dry, or use fast drying ink or add an appropriate amount of desiccant to the ink. The electrochemical aluminum box with low separation force and excellent heat transfer can be selected.
烫金版制作主要采用照相腐蚀工艺和电子雕刻技术,材质多为铜版或锌版。
The production of bronzing plate mainly adopts photographic corrosion process and electronic engraving technology, and the material is mostly copper plate or zinc plate.
铜版材质细腻,表面的光洁度、传热效果都优于锌版,采用优质铜版可以提高烫金图文光泽度和轮廓清晰度。传统的照相腐蚀技术制作烫金版工艺简易、成本较低,使用寿命也较短,主要用于文字、粗线条、一般图像的烫金。
Copper plate has fine material, and its surface finish and heat transfer effect are better than zinc plate. The use of high-quality copper plate can improve the gloss and outline definition of bronzing graphics and texts. The traditional photographic etching technology has the advantages of simple process, low cost and short service life. It is mainly used for bronzing text, thick lines and general images.
电雕制作烫金版能表现丰富细腻的层次变化,其耐印力高,适合烟包类、产品质量要求精细、批量较大产品的包装。
The gilding plate made by electric carving can show rich and delicate level changes, and its printing resistance is high. It is suitable for the packaging of cigarette bags, products with fine quality requirements and large quantities.

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