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.

　　紙是由植物纖維構成的，植物纖維具有多孔性和親水性，對水非常敏感。環境濕度稍有變化，紙張含水量也會有變化。空氣相對濕度對紙張含水量的影響，一般是相對濕度增大，紙張含水量增大，相反，相對濕度減小，紙張含水量減小。而紙張含水量的大小，與印刷性能有直接關系。例如，紙張含水量的改變會導致紙張膨脹(包括局部變形)。紙張的尺寸穩定性與印刷的操作和注冊的適宜性密切相關。如果是多色疊印產品，紙張尺寸改變，會導致產品不允許疊印，變成次品，浪費紙張。因此，由于濕度的影響，紙張尺寸的變化是印刷車間更重要的問題之一。由于紙張含水量的變化，也會引起其他紙張性能的變化。如含水量、紙張抗拉強度、表面強度下降;含水量過低，紙張變脆變硬，印刷時容易產生靜電現象。

　　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.

　　濕度失控時，承印物會產生靜電:印刷時由于靜電的吸引，紙張之間會發生封閉，會造成飛達分紙和送紙困難，容易產生斷紙、空頁;承印物表面帶有靜電，會吸附五彩紙屑或漂浮在空氣中大量的灰塵、雜質等，從而影響油墨的轉移，造成印刷。產生靜電的后果，一方面會造成紙張難以印刷，另一方面也會造成印刷故障，更嚴重的還會因放電而引起火災。

　　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.

　　以上是濟南手提袋印刷廠為大家介紹的相關內容，想要了解更多內容，歡迎訪問網站：http://www.seven2000.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