海報印刷是在物體表面上進行的，靜電現(xiàn)象也主要表現(xiàn)在物體表面。印刷過程中由于不同物質(zhì)間摩擦、撞擊及接觸，使參與印刷的所有物質(zhì)都產(chǎn)生靜電。下面濟南印刷廠家來講講海報印刷中靜電產(chǎn)生的危害以及方法。

Poster printing is carried out on the surface of the object, and electrostatic phenomenon is also mainly manifested on the surface of the object. During the printing process, all substances involved in printing will generate static electricity due to friction, impact and contact between different substances. Next, Jinan printing factory will talk about the hazards of static electricity in poster printing and the removal methods.

海報印刷中靜電產(chǎn)生的危害

Hazards of static electricity in poster printing

1.影響產(chǎn)品印刷質(zhì)量

1. Impact on product printing quality

承印物表面帶電，如紙張、聚乙烯、聚丙烯、玻璃紙等，會吸附紙屑或漂浮在空氣中的灰塵、雜質(zhì)等，影響油墨轉(zhuǎn)移，使印刷品發(fā)花等，造成印刷品質(zhì)量下降。其次如油墨帶電荷，在移動中放電，在印刷品上會出現(xiàn)“靜電墨斑”，在層次薄版印刷中常出現(xiàn)這種情況。在實地印刷中，如帶電油墨在印刷品邊緣上放電，很容易在邊緣出現(xiàn)“墨須”。

The surface of the substrate is electrified, such as paper, polyethylene, polypropylene, cellophane, etc., which will absorb paper scraps or dust and impurities floating in the air, affect the ink transfer, make the printed matter blossoming, etc., and cause the quality of the printed matter to decline. Secondly, if the ink is charged and discharged during movement, "electrostatic ink spots" will appear on the printed matter, which often occurs in the layered lithography. In field printing, if the charged ink discharges on the edge of the printed matter, it is easy to have "ink whiskers" on the edge.

2.影響生產(chǎn)

2. Impact on safety production

在印刷過程中由于高速摩擦，剝離會產(chǎn)生靜電，當靜電積累到很容易導致空氣放電，造成電擊或起火。電壓很高時，帶電的油墨會引起油墨、溶劑著火，直接威脅操作人員的。

During the printing process, due to high-speed friction, peeling will generate static electricity. When the static electricity accumulates, it is easy to cause air discharge, resulting in electric shock or fire. When the voltage is very high, the charged ink will cause the ink and solvent to catch fire, directly threatening the safety of operators.

海報印刷中靜電產(chǎn)生的方法

Methods of removing static electricity in poster printing

1.化學法

1. Chemical elimination method

在承印物表面上涂一層抗靜電劑，使承印物導電，成為稍微導電的絕緣體?；瘜W的應用在實際中有很大局限，比如在印刷紙張中加入化學成分時，對紙張品質(zhì)產(chǎn)生不良影響，如降低紙的強度、附著力、緊密度、抗拉強度等，因此化學方式不太被廣泛使用。

Apply a layer of antistatic agent on the surface of the substrate to make the substrate conductive and become a slightly conductive insulator. The application of chemical elimination has great limitations in practice. For example, when adding chemical components to the printing paper, it will have adverse effects on the quality of the paper, such as reducing the strength, adhesion, compactness, tensile strength, etc. of the paper. Therefore, chemical methods are not widely used.

2.物理法

2. Physical elimination method

不改變材料性質(zhì)利用靜電本身特性來，是現(xiàn)有常用的方法。

It is a commonly used method to eliminate static electricity without changing material properties.

(1)接地法，使用金屬導體將要靜電的物質(zhì)和大地連接，與大地等電位，但這種方式對絕緣體沒有效果。

(1) The grounding elimination method uses metal conductors to connect the material that will eliminate static electricity with the earth and equipotential with the earth, but this method has no effect on insulators.

(2)濕度控制法

(2) Humidity control elimination method

印刷材料表面電阻隨空氣濕度增大而減小，因此增加空氣的相對濕度，可以提高紙張表面的導電率。印刷車間適合的環(huán)境條件是：溫度為20度左右，帶電體環(huán)境濕度70%以上。

The surface resistance of printing materials decreases with the increase of air humidity, so increasing the relative humidity of the air can improve the conductivity of the paper surface. The suitable environmental conditions for the printing workshop are: the temperature is about 20 degrees, and the ambient humidity of the charged body is more than 70%.

(3)靜電設備選用原則

(3) Principles for selection of electrostatic elimination equipment

印刷廠常用的靜電設備有感應式、高壓電暈放電式、離子流靜電器和放射性同位素式幾種。其中前兩種便宜，安裝使用方便和不存在原子輻射等優(yōu)點得到廣泛應用。

The electrostatic elimination equipment commonly used in printing plants include induction type, high-voltage corona discharge type, ion current electrostatic eliminator and radioisotope type. The first two are widely used for their advantages of low price, convenient installation and use, and no atomic radiation.

海報印刷中靜電產(chǎn)生的危害以及方法相關(guān)內(nèi)容就講解到這里了，您對有怎樣的想法可以隨時來我們網(wǎng)站http://buiy.cn進行咨詢了解！

The harm of static electricity generated in poster printing and the relevant content of removal methods will be explained here. You can come to our website at any time for your ideas http://buiy.cn Consult and understand!