瓦楞纸板直接柔印改善的是哪些流程？
What is the improvement process of corrugated board direct flexo printing?
1．柔性版直接印刷纸箱生产的工艺流程
1. Process flow of flexographic direct printing carton production
瓦楞纸板生产一纸板直接印刷（柔性版）。模切开槽_÷黏合钉箱。常规的柔版印刷瓦楞纸箱工艺是直接在瓦楞纸板上进行印刷，使用的是水性油墨，目前在我国的纸箱厂中应用很广泛。
Corrugated board produces a cardboard direct printing (flexo). Die cutting slotting_ Adhesive nail box. The conventional flexographic printing technology of corrugated box is printing directly on corrugated board, using water-based ink, which is widely used in China's carton factory.
2．桑性版直接印刷优点
2. Advantages of direct printing
(1)幅面大，宽幅的柔性版印刷机大幅宽可达2.5~2.8m。
(1) Large format, wide flexographic printing press, wide width up to 2.5 ~ 2.8m.
(2)低，柔印版耐印力很高，可重复使用。
(2) Low price, flexographic version of high printing resistance, can be reused.
(3)纸箱生产工艺简单，可以联动生产，如印刷、开槽、压痕、
(3) Carton production process is simple, can linkage production, such as printing, slotting, indentation
钉（粘）箱、打捆等一机即可完成；但生产效率高，成本低。
Nailing (gluing) boxes and bundling can be completed by one machine, but the production efficiency is high and the cost is low.
(4)柔印是轻压印刷，对瓦楞纸板的强度影响较小。
(4) Flexo printing is light press printing, which has little influence on the strength of corrugated board.
(5)使用水性油墨，，油墨较低。
(5) The use of water-based ink, environmental protection and safety, ink price is low.
(6)印刷设备原理简单，易于操作，对印刷面保护较好。
(6) The principle of the printing equipment is simple, easy to operate, and the printing surface is well protected.
3．缺点
3. Disadvantages
(l)瓦楞纸板较厚，在印刷中变化因素多，控制较难，印刷精度
(l) Corrugated board is thick and has many factors in printing, so it is difficult to control and the printing accuracy is low
不高。
It's not high.
(2)多色印刷品质较差。
(2) The quality of multicolor printing is poor.
(3)印刷压力控制较难，易造成纸板强度下降。 为实现高品质的印刷，要综合考虑可能影响印刷的各种因素，使之达到优组合。柔版印刷效果由五大要素来决定：操作人员、印刷机械、承印材料、印版和油墨。这五种要素是保证印刷产品高品质的
(3) It is difficult to control the printing pressure, which is easy to reduce the strength of the paperboard. In order to achieve high quality printing, it is necessary to comprehensively consider various factors that may affect the printing, so as to achieve the optimal combination. Flexographic printing effect is determined by five factors: operator, printing machine, substrate, plate and ink. These five elements are the key to ensure the high quality of printing products
关键。
The key.
4．柔印版材的使用
4. Use of flexo plate
在瓦楞纸板柔版直接印刷工艺中，对版材的选择非常关键，直接柔印版材根据厚度不同，可分为三种，即普通版材、薄型版材和超薄型版材。
In the flexographic direct printing process of corrugated board, the selection of plate material is very important. According to the thickness, the direct flexographic plate can be divided into three types: ordinary plate, thin plate and ultra-thin plate.
(1)普通版材。普通版材的厚度为3.94 -7.OOmm。这种印版由黏版胶直接贴在印版滚筒上。在瓦楞纸板印刷中，由于瓦楞纸板本身的特点，采用这种版材会对印刷造成较大影响，主要表现为影响套印精度，实地印刷中间部分密度不足，易造成
(1) Common plate. The thickness of ordinary plate is 3.94-7.oomm. This kind of plate is pasted on the plate cylinder directly by the adhesive. In corrugated board printing, due to the characteristics of corrugated board itself, the use of this plate will have a greater impact on printing, mainly for the impact of overprint accuracy, the lack of density in the middle part of the field printing, easy to cause problems
网点、文字和线条的扩大变形等。
Dot, text and line expansion and deformation.
(2)薄型版材和超薄型版材。薄型版材的厚度为2.84 –3. 94mm，超薄型版材的厚度小于2.84mm。这两种版材统称为薄型
(2) Thin plate and ultra-thin plate. The thickness of thin plate is 2.84 – 3.94mm, and the thickness of ultra-thin plate is less than 2.84mm. These two plates are collectively referred to as thin
版材，该版材一般要与衬垫组合一起使用才能获得效果。弋垫式衬版技术是目前应用较多的衬垫技术，由于其衬垫材料柔性高
Plate, the plate is generally used together with the pad in order to obtain high quality effect. At present, pad technology is widely used in pad technology, because of its high flexibility of pad material
于树脂版或橡胶版2 -10倍，所以具有弹性好、不变形、受压复原快的特点。采用该气垫衬版，能吸收瓦楞纸板、印版和印版辊之间产生的压力，可有效防止印版的变形和纸板损坏，使传墨更均匀，有效控
In the resin version or rubber version 2 - 10 times, so with good elasticity, no deformation, compression recovery fast characteristics. The air cushion liner can absorb the pressure between the corrugated board, the printing plate and the printing plate roller, effectively prevent the deformation of the printing plate and the damage of the paperboard, make the ink transfer more uniform and effectively control the pressure
制网点扩大，压印点面适印性更大，印刷图像层次更清晰。R/bak气势式衬版的主要特点：减少印刷点面压力，有效控制网点扩大；避免印版变形，延长印版使用寿命；对于跳动过大的印版辊有独特的补偿作用；对于低品质的瓦楞纸板有良好的适印性，并能避免损坏瓦楞纸板；可提高传统印刷设备的印刷档次。
The printing dot is enlarged, the printability of the embossing dot surface is greater, and the printing image level is clearer. The main features of R / bak momentum type liner are as follows: reduce the pressure of printing dot surface, effectively control dot expansion; avoid plate deformation, extend the service life of plate; have a unique compensation function for plate roll with excessive beating; have good printability for low-quality corrugated board, and avoid damaging corrugated board; can improve the printing grade of traditional printing equipment.
R/bak气垫式衬版技术是目前瓦楞纸箱印刷中应用广泛的一项成熟技术，被大家视为一种提高瓦楞纸箱印刷品质的为直接、效果为明显的解决办法。气垫式衬版技术正在逐步取代传统的厚型印版。
R / bak air cushion liner technology is a mature technology widely used in corrugated box printing, which is regarded as a direct and obvious solution to improve the printing quality of corrugated box. Air cushion technology is gradually replacing the traditional thick plate.
应尽可能使用薄版，与厚印版相比，薄版不仅可以进行平整的实地印刷，而且网点扩大量小，套印精度高，印刷品质稳定，图像层次更精细，而用厚版印刷，印刷压力过小时，瓦楞纸板易产生瓦楞状和“搓板”样图案，而且影响实地及精细线条；印刷压力过大时，瓦楞纸板易变形甚损坏，同时树脂版印版变形，印刷网点扩大，厚版则网点扩大量大。
Thin plate should be used as much as possible. Compared with thick plate, thin plate can not only carry out flat field printing, but also has a large number of small dot expansion, high overprint accuracy, stable printing quality, and more fine image level. However, with thick plate printing, corrugated board is easy to produce corrugated and "washboard" like patterns when the printing pressure is too small, which affects the field and fine lines, Corrugated board is easy to be deformed or even damaged. At the same time, the resin plate is deformed and the printing dot is enlarged, while the thick plate has a large number of dot.
所以瓦楞纸板品质较差时，应选用厚度较厚、硬度较低的版材；瓦楞纸品质较好、需印刷小字、网线版时，应选择肖氏硬度为35 -45的薄版。
Therefore, when the quality of corrugated board is poor, the plate with thicker thickness and lower hardness should be selected; when the quality of corrugated paper is good, small characters and screen plate need to be printed, the thin plate with shore hardness of 35-45 should be selected.
实践中发现，同一印版在不同的印速时，印迹的虚实也不同。其规律是在同等条件下，印速高时印迹显得较实，反之，则较虚。原因是柔印版的弹性形变和受力时间成正比，所以同块版在低速印刷时弹性形变较高速时大。
In practice, we found that the same plate at different printing speed, the virtual and real imprint is also different. The rule is that under the same conditions, when the printing speed is high, the imprint appears more solid, otherwise, it is more virtual. The reason is that the flexographic plate's elastic deformation is directly proportional to the stress time, so the same block plate's elastic deformation is larger at low speed than at high speed.
