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印刷包装制作怎么做好颜色的处理?

  印刷包装是印刷技术领域的一个分支,属于特种印刷范畴。印刷包装是以美化、认可、促销商品为主要目的并采用印刷方式和印后加工技术,是一种通用印刷技术的应用,是在通用印刷技术的基础上发展起来的,并形成了印刷行业的一种新体系。下面为大家介绍一下印刷彩印及包装的工艺流程:

  Printing and packaging is a branch of printing technology, which belongs to the category of special printing. Printing and packaging is mainly aimed at beautifying, recognizing and promoting commodities, and adopts printing methods and post-press processing technology. It is a kind of application of general printing technology. It is developed on the basis of general printing technology and forms a new system of printing industry. Following is an introduction to the printing and packaging process.

  在柯式平版印刷过程中,经常会遇到假色印印的现象,主要表现在印品上印版场局部有斑点或薄弱、图形或线条不完整、再现度差的图像或点逐渐丢失。油墨在印刷过程中出现的不实有很多原因,它涉及到很多因素,包括纸张的性能、油墨的性能、印版的质量、印刷胶布、印刷压力、印刷机的性能以及印刷过程的质量等。

  In offset lithographic printing, false color printing is often encountered, which is mainly manifested in the spot or weak, incomplete graphics or lines, and the gradual loss of poor reproducibility of images or points on the printing plate. There are many reasons for the inaccuracy of ink in printing process, which involves many factors, including paper performance, ink performance, plate quality, printing offset, printing pressure, printing press performance and printing process quality.

  如果在印刷过程中,纸张、油墨、性能稳定,质量满足印版生产的要求,印刷机的工作性能相对稳定,或者油墨印刷出现假现象,其主要原因是印刷压力问题。在胶印中,印刷压力的大小直接决定了油墨在转移过程中的大小,如果印刷压力的过程中局部出现不均匀,将直接导致油墨的产生。

  If in the printing process, paper, ink, stable performance, quality to meet the requirements of plate production, printing press performance is relatively stable, or ink printing false phenomenon, the main reason is the printing pressure problem。 In offset printing, the size of printing pressure directly determines the size of the ink in the transfer process。 If the printing pressure is not uniform locally, it will directly lead to the production of ink。

  在胶印中,橡皮布的压缩变形是印刷压力的根本保证,油墨的转移是橡皮布压缩变形的结果。

QQ截图20170929174648.jpg

  In offset printing, the compression deformation of rubber cloth is the fundamental guarantee of printing pressure, and the transfer of ink is the result of compression deformation of rubber cloth.

  涂布辊的橡胶布,与此同时,行动的紧张和印刷压力,增加辊的数量,橡皮布压缩变形应力积累,橡皮布会变得僵硬,失去了原有的柔软、高弹性,甚至在橡皮布表面会出现明亮或开裂的迹象,导致不均匀的地方印刷印刷压力的过程。

  At the same time, the tension of action and printing pressure increase the number of rollers and the accumulation of compressive deformation stress of rubber cloth. The rubber cloth will become rigid, lose its original softness and high elasticity, and even appear bright or cracking signs on the surface of rubber cloth, leading to the process of printing pressure in uneven places.

  另一方面,由于胶辊安装在印版滚筒和压花辊之间,胶布上的每一个小单元每周旋转一次,分别与两个胶辊接触一次。因此,力是周期性变化的,它是由于施加在橡胶布上的力周期性变化,会导致橡胶布内部摩擦,导致橡胶布老化,影响印刷压力的均匀性,可能造成废橡胶布。特别是在现代高速胶印机上,胶布的应力循环频率越高,胶布产生的内摩擦越大,胶布的使用寿命越短,对印刷压力的影响就越大。

  On the other hand, because the cots are installed between the plate drum and the embossing roller, each small unit on the rubber cloth rotates once a week and contacts with two cots respectively. Therefore, the force changes periodically, because the force applied on the rubber cloth changes periodically, which will lead to internal friction of the rubber cloth, leading to aging of the rubber cloth, affecting the uniformity of printing pressure, and possibly causing waste rubber cloth. Especially in modern high-speed offset press, the higher the stress cycle frequency of the adhesive, the greater the internal friction produced by the adhesive, the shorter the service life of the adhesive, and the greater the impact on the printing pressure.

  毯子除了为胶印印刷压力,毯子印记的力量的作用下,也应该有一个好的印刷板的文本和文本的一部分油墨转移到衬底的表面,也就是说,墨水,墨水释放能力,但老化的毯子将改变油墨转移能力,也会导致油墨。

  In addition to offset printing pressure and the power of blanket imprinting, blankets should also have a good printing board text and part of the text ink transferred to the surface of the substrate, that is, ink, ink release capacity, but aging blankets will change the ink transfer capacity, will also lead to ink.


 
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