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    如何正确的处理丝印网版上的污渍?
    2018-07-17 10:20:43

    在操作丝网印刷机过程中,丝印网版的除污是一项很重要的工作。如果网版上的污垢清理不干净,就会造成浪费,并且影响印刷质量,缩短网版使用寿命。下面,就为大家详细介绍一下丝网印刷网版污垢的出来方法。
    In the process of screen printing, decontamination of screen printing screen is a very important job. If the dirt on the screen is not cleaned up, it will cause waste and affect the quality of printing and shorten the service life of screen. Next, we will give you a detailed introduction of screen printing screen dirt method.
    当图片文印刷部位上有污物或干墨时,就应对丝网进行除污处理,停下印刷机后把网框抬起,这时有的操作人员就会蘸有溶剂的砂布用力猛擦模版下侧,声音之大整个印刷车间都能听得到,常常会模版损坏。
    When there are dirt or dry ink on the print part of the picture text, we should remove the screen from the screen and lift the net frame after the press is stopped. At this time, some operators will dip into the lower side of the template with a solvent of sand cloth. The whole printing workshop can be heard, and the template is often damaged.
    一个真正懂行的操作人员极少去用力磨擦模版式的图文印刷面,因为他知道印刷图广文的清晰度要求所有的图文边沿保持清晰的乳剂层图文界面。用力磨擦会损坏乳剂层图文界面,甚至擦掉乳剂层,只留下光秃秃的网眼。
    A real knowledgeable operator rarely grind out the print surface of the template, because he knows the clarity of the printed picture requires that all the edges of the graphic and text keep a clear emulsion layer interface. Hard friction will damage the emulsion interface, even wipe the emulsion layer, leaving only the bare mesh.
    在印刷高网线数彩色图像时,丝线下面的乳化剂薄膜只有5-6um厚,网眼自身的丝线直径也许只有30um,经不住用力磨擦。因此,避免粗野除污的关键是首先应防止模版被污染。
    When printing high net line color images, the emulsifier film under the silk line is only 5-6um thick, and the wire diameter of the mesh may be only 30um, and can't resist friction. Therefore, the key to avoid rough decontamination is to prevent templates from being contaminated first.
    造成模版污染的最主要原因是油墨控制不当,致使干墨留在了网眼内。在使用溶剂型油墨或水性油墨时,其原因是调墨过稀或过稠。应该在调墨的状态不发生变化。在使用UV固化油墨时,应努力避免丝网受到紫外灯照射,也要避免阳光照射。
    The main reason for template pollution is improper ink control, resulting in dry ink left in the mesh. When using solvent based ink or water-based ink, the reason is too thin or too thick ink. There should be no change in the state of the ink transfer. When using UV curing ink, efforts should be made to avoid the exposure of the screen to ultraviolet light and to avoid sunlight exposure.
    另一个油墨控制问题与印刷速度调控不当会导致供量不均,使受墨不足的网孔迅速干固。
    Another ink control problem and improper printing speed control will lead to uneven supply, so that the mesh with insufficient ink will quickly dry.
    引起油墨变干的最后一个原因是刮墨板设置不当或者已被磨损,以高网线数印刷层次细微的图像时,要求使用刮墨边沿墨板在正常使用中会发生变形或被磨损,周过的图像清晰度便随之下降,这表明油墨有可能不能正常地通过网孔,如果这一问题得不到及时解决,油墨就会干固在网孔内。为避免出现上述问题,应定期翻转刮墨板以延长其刮墨边的使用寿命,或者在图文印刷质量尚未下降之前换用新的刮墨板。
    The last reason for the drying of the ink is that the ink scraper is not set or has been worn out. When printing the fine image with the number of high net lines, it is necessary to use the scraper edge ink plate to deform or be worn out in normal use, and the clarity of the week's image will decrease, which indicates that the ink may not be passed normally. If the problem is not solved in time, the ink will be fixed in the mesh. In order to avoid the problems mentioned above, the scraping plate should be reversed regularly to prolong the service life of the scraping edge, or to replace the new scraper plate before the print quality has not been reduced.
    济南丝网印刷

    为了使网孔正常发挥作用,还应该注意清理油墨内或承印物上的污物。由于静电吸附空气中污染物以及储存条件不良等原因,承印物表面会沾上污物,上述问题可通过改善储存条件和工艺控制而加以解决,另外使用除静电器和承印物除污装置也可防止灰尘污物从承印表面转移到网孔内。
    In order to make the mesh work normally, we should also pay attention to cleaning the dirt inside the ink or the substrate. Because of the electrostatic adsorption of pollutants in the air and poor storage conditions, the surface of the substrate will be stained with dirt. The above problems can be solved by improving the storage conditions and process control. In addition, the removal of dirt and dirt from the surface of the screen can also be prevented by the removal of the static electric apparatus and the printing device.
    如果模版遭到污染应该如何处理呢?在使用平台丝网印刷机时,要在印完一组印张后把印机停下来,然后输入一张吸墨纸,使丝网同吸墨纸相接触。
    What should be treated if the template is contaminated? When using the screen printer, the printing machine should be stopped after printing a group of printing sheets, and then input a blotting paper to make the screen contact with blotting paper.
    让丝网处在印刷位置上,接着用蘸有丝网清洗剂的非磨擦性软布擦掉模版刮墨面上的污物,不要用力过猛,这样污物就会透过网孔落到下面的吸水纸上,必要时可再用一张吸水纸重复清洗网孔。有些落在最上面的污物颗粒也许很大,无法冲过网孔,但用软布可将其粘起。清洗完毕之后,可用吹风机(调用“冷风”)吹干模版。
    Let the screen be in the printing position, and then use the non abrasive soft cloth dipped in the silk net cleaning agent to wipe off the dirt on the mold curettage surface. Do not force too hard, so that the dirt will fall through the mesh hole to the water absorbent paper below. If necessary, a water absorbent paper can be reused to clean the mesh. Some of the particles on the top may be large enough to scour through the mesh, but they can be sticky with soft cloth. After the cleaning is done, the hair dryer (called "cold wind") can be used to dry the template.
    在清洗圆压式丝网印刷机时,会遇到不同的情况。由于设计结构方面的原因,不能像清洗普通丝网印刷机那样把污物洗落在吸水纸上。所幸的是由于印刷速度比较快,油墨在网孔干固的可能性不大。如果出现这种情况,首先要在印完组活件时把印刷机停下来,然后用非磨蚀性的软布把丝网清洗剂或稀释剂蘸涂在印刷图文部位的模板顶端,注意不溶剂刷洗网孔内的污物。
    When cleaning the circular press, there will be different situations. Because of the design structure, it is not possible to wash the dirt on the absorbent paper like washing the ordinary screen printing machine. Fortunately, because printing speed is relatively fast, ink is not likely to dry in mesh. If this is the case, the printing press should be stopped at the end of the printing group, and then the screen cleaning agent or diluent is dipped in the top of the template of the printed graphic part with non abrasive soft cloth.
    有时还要清除模板下面的污物。在这种情况下,应该用软布轻轻地把污物擦去,不要用力过猛。在生产过程中应该经常采用以上清洗除污方式,以延长模版和丝印机使用寿命,降低废品率。
    Sometimes it is necessary to clear the dirt under the template. In this case, soft cloth should be used to wipe the dirt lightly and not to exert too much force. In the production process, the above cleaning and decontamination methods should be used frequently to prolong the service life of the templates and screen printing machines and reduce the reject rate.

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