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纸的质量竟然也可以造成印刷故障
作者:admin 来源:http://www.sdhzyw.com 发布时间:2019-3-14 11:14:34 浏览次数:111
印刷行业对纸张的要求很苛刻,不同类型的产品也要用不同的纸张进行印刷。但是,因为纸张的原因,也有可能引起一些印刷故障,我们就和济南书刊杂志印刷一起来看一下吧。
The printing industry is very demanding on paper, and different types of products need to be printed on different paper. However, because of the paper, there may also be some printing problems. Let's take a look at the printing of Jinan books and magazines.
因为纸的质量因素,可以造成以下几种印刷故障:
Because of the quality of paper, the following printing faults can be caused:
1.纸面涂布、施胶不平均纸张由纤维组成,纸面不可能完整平均,因而,需在纸的外表涂布一层无机矿物颜料和粘合剂涂层,从而改善纸的外表质量。采用颗粒越细的颜料,涂布的纸面越润滑、细密;反之,纸面就越粗糙。此外,为了减少纸张的脱粉、掉毛现象,在造纸中采用外表施胶工艺,即在纸张外表涂一层胶粘剂,以进步纸张外表强度与光泽度。由于现代印刷机印刷速度快,油墨与纸面霎时脱开,油墨对纸外表拉力较大,请求纸面的涂布施胶需平均分歧。
1. Paper with uneven surface coating and sizing is composed of fibers, so it is impossible for paper to be uniform. Therefore, it is necessary to coat the paper with inorganic mineral pigments and adhesives so as to improve the paper's surface quality. The finer the particles are, the more lubricated and compact the paper surface will be; on the contrary, the rougher the paper surface will be. In addition, in order to reduce the phenomena of dedusting and wool loss of paper, surface sizing technology is adopted in paper making, that is, a layer of adhesive is applied on the surface of paper to improve the surface strength and gloss of paper. Because of the fast printing speed of modern printing presses, the ink and paper surface are separated instantly, and the ink has a large pull on the paper surface, so the sizing requirements for paper surface coating need to be divided equally.

2.纸面平整度不佳纸张的平整度不佳,详细表现有:①鼓泡纸张外表构成鼓泡,是由于纸张经过热枯燥器时,纸张外表水份逸出速度低于纸张内部蒸气产生的速度,内部蒸气在纸张内部产生压力而构成。 ②纸面有破洞、浆块这是在纸张的挑选、净化工序中构成的。呈现破洞是在纸张成形后,杂质从纸面零落构成。大的破洞会在印刷时产生停机或消费出废品;大而硬的浆块在印刷时会损伤印版和橡皮,从而影响印刷工作停止。

济南书刊杂志印刷

2. Paper surface smoothness is not good. Detailed performances are as follows: 1. Bubbled paper forms bubbles on the outside, because when the paper passes through the hot dryer, the speed of water escaping from the outside of the paper is lower than the speed of steam generating inside the paper, and the internal steam produces pressure inside the paper. (2) There are holes and pulp blocks on the paper surface, which are formed in the process of paper selection and purification. The appearance of holes is the formation of impurities from the paper surface scattered. Large holes can cause shutdown or waste during printing; large and hard slurries can damage the plate and rubber during printing, thus affecting the stop of printing work.
为防止呈现以上现象,采取的主要措施有:①纸的枯燥机具有良好的通风设备,使纸张蒸发出来的水蒸气能疾速排到屋外。②停止二次枯燥加速水分扫除。③操作认真挑选,净化纸浆。
In order to prevent the above phenomena, the main measures are as follows: 1. The paper dryer has good ventilation equipment, so that the water vapor evaporated from the paper can be quickly discharged outside the house. (2) Stop secondary dryness and accelerate moisture removal. Select carefully and purify the pulp.
以上的精彩内容由济南书刊杂志印刷友情提供,更多精彩内容欢迎收藏我们的官网:http://www.sdhzyw.com
The above wonderful content is provided by Jinan magazines and magazines, printed friendship. More wonderful content is welcome to collect our official website: http://www.sdhzyw.com.