In packaging and printing industry, CorelDRAW is usually used to edit sample drawings instead of PS. I believe that all those who learn CorelDRAW will get a message from their teachers. The color mode used in printing industry is CMYK. You are required to use this mode when saving files. After forming a habit, you will naturally choose the right one without thinking in the future.

纸张长度变化的影响因素

Influencing factors of paper length change

1、纸张含水量

1. Moisture content of paper

纸张的含水量不同，也会造成纸张长度发生变化。纸张的含水量越大，印刷后的纸张收缩也就会越严重。

Different moisture content of paper will also cause the change of paper length. The greater the moisture content of the paper, the more serious the shrinkage of the printed paper will be.

2、张力

2. Tension

纸张张力就是印刷过程中输纸系统对纸张的拉伸力，济南印刷厂在印刷过程当中过大的张力直接就是造成拉成纸张，印刷后了张力，纸张必然回缩，使配页出现时长时短的问题，从而影响到美观。

The paper tension is the stretching force of the paper feeding system in the printing process. The excessive tension of Jinan printing factory in the printing process directly causes the paper to be drawn. After printing, the tension is eliminated, and the paper is bound to retract, which causes the problem of short and long time in the matching page, thus affecting the beauty.

3、纸张的定量

3. Quantitative analysis of paper

在相同的张力下，印刷所用的纸张定量越大(纸张越厚)，印刷之后纸张的收缩严重，但是也要考虑到厚纸含水量大的因素，一般的情况之下，厚纸应该加大张力。

Under the same tension, the larger the paper weight used for printing (the thicker the paper), the more serious the shrinkage of the paper after printing. However, the high moisture content of thick paper should also be considered. Generally, the tension of thick paper should be increased.

印刷的过程中，一样的印刷产品尽量使用相同的、相同的厚度的纸张，这样可以再印刷的过程中使其张力保持不变。

In the process of printing, the same printing products try to use the same brand, the same thickness of paper, so that the tension can be kept unchanged in the process of re printing.