Printing plants are very common now. They mainly focus on paper printing. Of course, the moisture in the paper has a great impact on the work. If it's too high, it can't be too low. Let's introduce the impact of paper moisture

济南印刷厂

Jinan printing factory

1、在印刷厂储存期间，纸张作为一种吸湿材料，它能从空气中吸收水分，吸收速率取决于空气相对湿度和温度，也能把水分传到空气中而失去水分，速率取决于纸张的水分含量及环境温湿度。

1. During the storage period in the printing plant, as a kind of hygroscopic material, paper can absorb moisture from the air. The absorption rate depends on the relative humidity and temperature of the air. It can also transfer moisture to the air and lose moisture. The rate depends on the moisture content of the paper and the ambient temperature and humidity.

2、水分变化对纸的各种特性影响也很大，随着水分的变化，其定量、抗张强度、柔韧性、耐折度等都将发生变化，纸张尺寸也会发生伸缩，甚至发生卷曲、翘边、起皱、荷叶边等现象。

2. With the change of moisture content, the quantitative, tensile strength, flexibility and folding resistance of the paper will change, and the paper size will also shrink, even curl, edge warping, wrinkling, ruffle and other phenomena will occur.

3、水分含量为百分之七正负百分之二，白卡纸为百分之四到百分之七，单面涂布白纸板为八百分之±百分之二，这是纸张出厂时的水分含量。

3. The moisture content is 7% plus or minus 2%, 4% to 7% for white cardboard and 8% ± 2% for single coated white cardboard. This is the moisture content of the paper when it leaves the factory.

4、所谓相对湿度，是指某一温度下空气中水分含量与该温度下空气达到饱和所能容纳的水分含量之比。同一种纸张在不同相对湿度下平衡水分不同。

4. The so-called relative humidity refers to the ratio of the moisture content in the air at a certain temperature to the moisture content that the air can hold when it reaches saturation at that temperature. The same kind of paper has different equilibrium moisture under different relative humidity.

5、当吸湿速率和失水速率相同时，纸张和空气处于平衡，纸张中含水量不变，这种情况下纸张所含水分叫平衡水分。

5. When the moisture absorption rate and the water loss rate are the same, the paper and the air are in balance, and the moisture content in the paper remains unchanged. In this case, the moisture content of the paper is called equilibrium moisture.

6、纸张水分含量对印刷影响很大，水分太低，纸质发脆，印刷中易产生静电，含量过高，将会使油墨难以干燥。

6. The moisture content of paper has a great influence on printing. If the moisture content is too low, the paper is brittle, and it is easy to produce static electricity in printing. If the moisture content is too high, it will make the ink difficult to dry.

7、各种纸张都有一个水分含量值，在此值下，纸张的各种性能都处于较好状态，铸涂纸、铸涂白纸板

7. All kinds of paper have a moisture content value, under this value, all kinds of paper properties are in a good state, cast coated paper, cast coated white board

不过对于不同纸张，它的水分是不一样，当我们印刷厂在进行印刷的时候要先了解清楚，之后再合理的控制水分，不要让水分过高或者过低，从而不会影响产品的生产。

However, for different paper, its moisture is not the same, when we are printing, we should first understand clearly, and then reasonably control the moisture, do not let the moisture too high or too low, so as not to affect the production of products.