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

濟南印刷廠

Jinan printing factory

1、在印刷廠儲存期間，紙張作為一種吸濕材料，它能從空氣中吸收水分，吸收速率取決于空氣相對濕度和溫度，也能把水分傳到空氣中而失去水分，速率取決于紙張的水分含量及環(huán)境溫濕度。

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、水分變化對紙的各種特性影響也很大，隨著水分的變化，其定量、抗張強度、柔韌性、耐折度等都將發(fā)生變化，紙張尺寸也會發(fā)生伸縮，甚發(fā)生卷曲、翹邊、起皺、荷葉邊等現(xiàn)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、水分含量為百分之七正負百分之二，白卡紙為百分之四到百分之七，單面涂布白紙板為八百分之±百分之二，這是紙張出廠時的水分含量。

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、所謂相對濕度，是指某一溫度下空氣中水分含量與該溫度下空氣達到飽和所能容納的水分含量之比。同一種紙張在不同相對濕度下平衡水分不同。

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、當(dāng)吸濕速率和失水速率相同時，紙張和空氣處于平衡，紙張中含水量不變，這種情況下紙張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、紙張水分含量對印刷影響很大，水分太低，紙質(zhì)發(fā)脆，印刷中易產(chǎn)生靜電，含量過高，將會使油墨難以干燥。

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、各種紙張都有一個水分含量值，在此值下，紙張的各種性能都處于較好狀態(tài)，鑄涂紙、鑄涂白紙板

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

不過對于不同紙張，它的水分是不一樣，當(dāng)我們印刷廠在進行印刷的時候要先了解清楚，之后再合理的控制水分，不要讓水分過高或者過低，從而不會影響產(chǎn)品的生產(chǎn)。

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.