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    丝网印刷中颜色变化的原因!
    2019-01-03 10:27:37

    一、油墨分配欠好
    1. Ink distribution is not good
    假定油墨中的颜料分配妥当,那么,造成色彩变化的通常原因是参加的溶剂。在一个操控良好的车间里,油墨应该是准备好后随时供应给印刷机,也就是说,印刷工人不该该去分配油墨。
    Assuming that the pigments in the ink are properly distributed, the usual cause of the color change is the solvent involved. In a well-controlled workshop, the ink should be ready to be supplied to the printer at any time, that is to say, the printer should not distribute the ink.
    在许多公司里,油墨不是调好后供给印刷机使用,而是留给印刷工人去调,他们便根据自己的感觉去增加和混合油墨。这样一来,油墨中的颜料平衡被打破。对于水基普通油墨或UV油墨来说,油墨中的水以溶剂油墨中的溶剂相同的方法发作效果,参加水会使干燥的油墨膜减。⒂跋斓接湍纳,进而下降色彩的密度。
    In many companies, the ink is not ready for use by the printer, but left to the printer to adjust, they will increase and mix the ink according to their own feelings. In this way, the pigment balance in the ink is broken. For water-based ordinary ink or UV ink, the water in the ink has the same effect as the solvent in the solvent ink. Participating in the water will make the dry ink film thinner, and affect the color of the ink, thus reducing the color density.

    济南丝网印刷
    出现此类问题的原因还能够进一步追溯。在油墨仓库里,配墨工人不使用称量装置,只依靠自己的判断去增加适量的溶剂,或一开始混合得不合适,或许在印刷时变化了的油墨的混合量,这样混合的油墨将发生不同的色彩。当这一活件以后再次印刷时,这种情况会变得更糟,除非有足够的油墨配比记载,否则重现一种色彩几乎不可能的。
    The causes of such problems can be traced further. In the ink warehouse, the ink mixer does not use weighing device, but only relies on his own judgment to increase the appropriate amount of solvent, or the initial mixing is not appropriate, maybe the mixing amount of the ink changed during printing, so that the mixed ink will have different colors. When the work is reprinted later, the situation becomes worse, and it is almost impossible to reproduce a color unless there is sufficient ink mix to record it.
    二、丝网选择不合适
    II. Inappropriate Screen Selection
    任何一个丝网印刷者,如果以为丝网目数仅仅是丝网结构的一个变量,只会影响到印刷油墨的沉积,那么,他就会遇到费事。丝网的网线直径和织造的方法,即平纹仍是斜纹,对印刷的油墨膜的厚度有很大的影响。丝网供应商会供给丝网的详细技术资料,其中最重要的理论油墨容积,它表明在一定的印刷条件下所经过丝网网孔的油墨量,一般用cm3/m2来表明。
    If any screen printer thinks that the number of screen meshes is only a variable of screen structure, which will only affect the deposition of printing ink, he will encounter troubles. Screen diameter and weaving method, i. e. plain or twill, have a great influence on the thickness of ink film printed. Screen suppliers will provide detailed technical information on the screen, the most important of which is the theoretical ink volume, which indicates the amount of ink passing through the screen under certain printing conditions, generally expressed in cm3/m2.
    以上就是济南丝网印刷整理的相关内容,更多资讯或者产品需求可以直接点击我们的官网进行咨询:http://www.sopacmarine.com
    These are the related contents of Jinan screen printing and finishing. More information or product needs can be directly clicked on our official website for consultation: http://www.sopacmarine.com/