We are all familiar with the printing of picture albums. We all have a basic understanding of what kind of paper and what kind of process are used for the album. But we may not be familiar with the phenomenon of shrinkage cavity. I'm also a little strange to this word. Let's learn some probability of shrinkage phenomenon in album printing.

济南画册印刷

Jinan album printing

哪些原因导致导致画册印刷墨膜缩孔，又有哪些补救措施？缩孔是包装印刷墨膜因流平不良而出现的故障之一。油墨印刷后，湿墨在流平过程中出现回缩后成了小圆形的裸露出承印物材料或上一道墨层。产生缩孔的主要原因是印刷的湿墨膜上下部分的表面能力不同而导致的，有人对此认为一个湿墨膜可以视为是上下双层的液体墨膜，在成膜过程中，当上层湿墨膜的表面张力低于下层湿墨膜的表面能力时，就发生缩孔。这是由于润湿承印物材料的关系。有时候在正要发生此现象时，湿墨墨膜则又有流动性，就可能会造成二次的缩孔。

What causes the ink film shrinkage of album printing and what remedial measures are there? Shrinkage cavity is one of the faults of packaging printing ink film due to poor leveling. After printing, the wet ink shrinks in the leveling process and becomes a small round exposed substrate material or the upper ink layer. Some people think that a wet ink film can be regarded as a double-layer liquid ink film. In the film forming process, when the surface tension of the upper wet ink film is lower than the surface capacity of the lower wet ink film, shrinkage occurs. This is due to the wetting substrate material. Sometimes when this phenomenon is about to happen, the wet ink film has fluidity, which may cause secondary shrinkage.

从理论上讲：补救措施是改善湿墨的流动、流平性，画册印刷油墨的表面张力不仅要低，对承印物材料的润湿性也要好，因为上层湿墨膜与下面湿墨膜的界面能力之差，在一经包装印刷后，该体系的表面张力下降，至使印刷油墨会自发展布完整的墨膜我们对此产生的缩孔故障，具体的做法是:

Theoretically speaking, the remedy is to improve the flow and leveling of wet ink. The surface tension of album printing ink should not only be low, but also have better wettability to substrate materials. Because of the difference of interface ability between the upper wet ink film and the lower wet ink film, after packaging and printing, the surface tension of the system will drop to make the printing ink develop a complete ink film from cloth The specific measures are as follows:

1、在印刷油墨里适当的加入流平剂

1. Add leveling agent to printing ink properly

2、采用低表面张力的溶剂

2. Use solvent with low surface tension

3、对承印物表面进行湿润处理

3. Wet the substrate surface

4、控制印刷作业环境温度及湿度

4. Control the temperature and humidity of printing environment

5、选择适宜的稀释剂

5. Choose appropriate diluent

6、降低印刷油墨与承印载体之间的表面张力，使油墨与载体具有良好的湿润性，使其不致与引起缩孔的物质之间形成表面张力梯度。

6. Reduce the surface tension between printing ink and carrier, make the ink and carrier have good wettability, and prevent the formation of surface tension gradient between the printing ink and the material causing shrinkage.

为了正确的选用画册印刷油墨的防缩孔剂，简单的再介绍一下各类供操作工选择，容积类：一般指高沸点的混合溶剂，既能是一种良好的溶剂，又是良好的湿润剂，树脂类：一般有醋丁纤维素，尤其是相容性受限型的聚丙烯酸酯类的防缩孔树脂。除了上述已举类的防缩孔剂类外，还有属高分子表面活性剂的无硅的氟系表面活性剂，对于防止墨膜的缩孔，增进流平及提高印刷墨膜的光泽度也十分有效。

In order to correctly select the shrink proofing agent of album printing ink, briefly introduce various types for operators to choose. Volume class: generally refers to mixed solvent with high boiling point, which can be a good solvent and a good wetting agent. Resin: generally, it has cellulose acetate, especially the shrinkable pore resin of Polyacrylate with limited compatibility. In addition to the shrinkable agents mentioned above, there are also silicon free fluorinated surfactants belonging to polymer surfactants, which are very effective in preventing shrinkage of ink film, improving leveling and improving the gloss of printing ink film.

以上是对画册印刷出现缩孔现象的一些表面的知识理解，不知道对大家能不能带来一些小小的帮助，济南画册印刷厂家看上去不算有什么高难度的知识点，但行行出匠人，要做到印刷的顶端也需要不断的学习。才能呈现给大家外表美观的画册。

The above is the understanding of some superficial knowledge about the shrinkage phenomenon in album printing. I don't know if it can bring you some small help. Jinan picture book printing factory doesn't seem to have any difficult knowledge points, but the craftsman should learn constantly to achieve the top of printing. In order to show you a beautiful picture album.
关键词：济南画册印刷