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高质量的印刷薄纸,这些外部管理经验一定要看!
作者:admin 来源:http://www.sdhzyw.com 发布时间:2019-5-30 16:06:37 浏览次数:340
众所周知,厚纸印刷和薄纸印刷有着很大差异。因而,在实践操作时,应依据需求选择适宜的纸张类型。济南精装书制作公司在这里提示大家,薄纸是指定量在60g/m2以下的纸张,比方60g/m2轻型纸、55g/m2书写纸等。我们将薄纸放在强光处察看,会看到很多细小的孔隙,这是由纸张的工艺特性决议的。薄纸定量小,纸张的强度和韧度不够,易变形翘边,这些特性使得薄纸在印刷过程中特别容易形成输纸毛病,在高速运转状况下,容易因纸角撞击前规或递纸牙而形成重影、出褶等印刷毛病。
As we all know, there are great differences between thick paper printing and thin paper printing. Therefore, in practice, the paper type should be selected according to the demand. Jinan Hardcover Book Manufacturing Company here reminds you that thin paper refers to paper with a ration of less than 60g/m2, such as 60g/m2 light paper, 55g/m2 writing paper, etc. When we put the thin paper in the bright light, we can see many tiny holes, which are determined by the technological characteristics of the paper. Thin paper has small quantity, insufficient strength and toughness, and easy to deform and warp edges. These characteristics make thin paper easy to form paper feeding defects in the printing process. Under high-speed running conditions, it is easy to form duplication and folding defects due to the impact of paper corner on the front or the delivery teeth.
首先,要控制影响薄纸印刷的环境温湿度。印刷薄纸时,更好现裁现用,这样可更大限度地减少纸张与空气的接触时间。假如所裁纸张(包括半废品)没有立刻运用,应当用保鲜膜或拉伸膜把纸张缠绕起来,避免其因接触空气而变形。为了保证纸张内部含水量的合理(6%左右),还应留意纸张的堆放位置,不宜靠墙、靠窗、靠水龙头、靠暖气(冬天),更不可露天放置,以免过于枯燥而毁坏纸张含水量的合理,形成纸张翘曲不对等结果。
First of all, we should control the environmental temperature and humidity that affect thin paper printing. When printing thin paper, it is better to cut it now, so as to minimize the contact time between paper and air. If the cut paper (including semi-waste) is not used immediately, the paper should be wrapped up with fresh-keeping film or stretching film to avoid deformation due to air contact. In order to ensure that the moisture content of paper is reasonable (about 6%), we should also pay attention to the stacking position of paper. It is not suitable to place paper by wall, window, tap, heating (winter), and not open-air, so as to avoid being too dry and destroying the rationality of moisture content of paper, resulting in unequal warping of paper.
其次是在控制薄纸印刷影响要素的根底上,针对性地对纸张停止合理调控,可采取以下办法处理。
Secondly, on the basis of controlling the influencing factors of thin paper printing, we can take the following measures to control the paper rationally.
(1)除湿法:应用空调的除湿功用去除室内空气中多余的水分,就能够有效到达除湿的目的。印刷车间的规范环境为温度20℃左右、相对湿度55%~65%RH。
(1) Dehumidification: The purpose of dehumidification can be effectively achieved by using the dehumidification function of air conditioning to remove excess moisture in indoor air. The standard environment of printing workshop is about 20 C and 55%-65% RH.

(2)砸页法:假如纸张印刷后呈现卷曲现象,可用砸页法加以处理,将所切印张翻身,用手工“砸纸”的办法把卷曲的印张敲砸出许多折线,应用折线与折线之间产生的支撑力,强行改动弯曲的印张,使之相对平整。

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(2) Page smashing method: If the paper is curled after printing, it can be dealt with by page smashing method, turning all the printed sheets over, using manual "paper smashing" method to smash the curled sheets out of many folded lines, applying the support force between folded lines and folded lines, forcibly changing the bended sheets to make them relatively flat.
(3)晾纸法:晾纸法是应用晾纸机将裁切后的纸张或者没有裁切的纸张通风吹晾,使纸张内部的湿度和空气湿度坚持相对均衡,使纸张的含水量契合印刷请求并坚持稳定,保证其在印刷和印后加工中不易变形。这样既可进步印刷质量,也能给印后加工减少很多费事。
(3) Paper-drying method: The paper-drying method is to use the air-drying machine to air the cut paper or uncut paper, so that the humidity and air humidity inside the paper can be kept relatively balanced, so that the moisture content of the paper can meet the printing requirements and maintain stability, and ensure that it is not easy to deform in printing and post-printing processing. This can not only improve the quality of printing, but also reduce a lot of trouble for post-press processing.
输纸台板的合理调理是保证输纸精确的前提,必需设定好输纸台板各个部件的位置。
Reasonable conditioning of the feeding board is the precondition to ensure the accuracy of the feeding. It is necessary to set the position of each component of the feeding board.
(1)过桥轮一定要调理得稍松一点,起落分歧,以避免纸张变形。
(1) The bridge wheels must be adjusted a little loosely to avoid paper deformation.
(2)关于有输纸线带的印刷机,输纸线带的张力一定要分歧,线上的压力分歧并稍轻一些,否则易形成纸张变形严重、倾斜,惹起严重的输纸毛病。
(2) For a printing machine with paper feeding tape, the tension of the paper feeding tape must be different, and the pressure on the line must be different and slightly lighter, otherwise the paper will easily become seriously deformed and inclined, causing serious paper feeding problems.
(3)关于带有真空输纸线带的印刷机,调整时特别要留意。首先,真空输纸线带的赌气压要比自动设定的数值低一些,能到达设定的三分之一即可,必要状况下能够为零。其次,前规制动轮的吸风量也要相应减小,减小到原先自动设定的一半左右即可,否则容易使纸张中间起凸,光电检测到纸张晚到或倾斜,印品要么出折,要么重影。
(3) With regard to the printing press with vacuum feeding tape, special attention should be paid to the adjustment. First of all, the betting pressure of the vacuum paper feeding line is lower than that of the automatic setting value, which can reach one third of the set value, and can be zero if necessary. Secondly, the suction capacity of the front brake wheel should be reduced to about half of the original automatic setting. Otherwise, it is easy to make the paper bulge in the middle. Photoelectricity detects that the paper arrives late or tilts. Printing products are either folded or duplicated.
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The wonderful content of this article is compiled by Jinan Hardcover Book Manufacturing Company. We insist on the win-win concept of honesty and cooperation to provide you with perfect service. Welcome to http://www.sdhzyw.com.