Humidity in the workshop of Jinan handbag printing factory is an important factor affecting product quality. If the humidity of the workshop is not controlled, the printing quality will be seriously affected, or even unable to produce.

　　纸是由植物纤维构成的，植物纤维具有多孔性和亲水性，对水非常敏感。环境湿度稍有变化，纸张含水量也会有变化。空气相对湿度对纸张含水量的影响，一般是相对湿度增大，纸张含水量增大，相反，相对湿度减小，纸张含水量减小。而纸张含水量的大小，与印刷性能有直接关系。例如，纸张含水量的改变会导致纸张膨胀(包括局部变形)。纸张的尺寸稳定性与印刷的操作和注册的适宜性密切相关。如果是多色叠印产品，纸张尺寸改变，会导致产品不允许叠印，变成次品，浪费纸张。因此，由于湿度的影响，纸张尺寸的变化是印刷车间更重要的问题之一。由于纸张含水量的变化，也会引起其他纸张性能的变化。如含水量、纸张抗拉强度、表面强度下降;含水量过低，纸张变脆变硬，印刷时容易产生静电现象。

　　Paper is made of plant fiber, which is porous and hydrophilic, and is very sensitive to water. There is a slight change in the environmental humidity, the paper moisture content will also change. The influence of air relative humidity on the water content of paper is generally the increase of relative humidity, the increase of paper water content, on the contrary, the decrease of relative humidity, the decrease of paper water content. The water content of paper is directly related to the printing performance. For example, changes in the moisture content of the paper can cause the paper to expand (including local deformation). The dimensional stability of paper is closely related to the suitability of printing operation and registration. If it is a multi-color overprint product, the paper size changes, which will cause the product not to be overprinted, become a defective product, and waste paper. Therefore, due to the influence of humidity, the change of paper size is one of the most important problems in the printing workshop. Due to the change of water content of paper, it will also cause the change of other paper properties. For example, the moisture content, paper tensile strength and surface strength decrease; the moisture content is too low, the paper becomes brittle and hard, and electrostatic phenomenon is easy to occur during printing.

　　湿度失控时，承印物会产生静电:印刷时由于静电的吸引，纸张之间会发生封闭，会造成飞达分纸和送纸困难，容易产生断纸、空页;承印物表面带有静电，会吸附五彩纸屑或漂浮在空气中大量的灰尘、杂质等，从而影响油墨的转移，造成印刷。产生静电的后果，一方面会造成纸张难以印刷，另一方面也会造成印刷故障，更严重的还会因放电而引起火灾。

　　When the humidity is out of control, the substrate will generate static electricity: due to the attraction of static electricity during printing, the paper will be closed, which will make it difficult to fly to separate and feed paper, and easy to produce paper break and empty pages; the substrate surface has static electricity, which will absorb colorful paper scraps or a large number of dust and impurities floating in the air, thus affecting the transfer of ink and causing printing. The result of static electricity, on the one hand, will make the paper difficult to print, on the other hand, it will also cause printing failure, more serious will cause fire due to discharge.

　　以上是济南手提袋印刷厂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 related contents introduced by Jinan handbag printing factory. If you want to know more, please visit the website: http://www.jingyinshua.com