Art Briefcase
Coated Paper: packaging and decoration printing technology important materials – coated paper, packaging – Paper Industry
Coated Paper Packaging and decoration printing process is an important material, the printing quality of its products to a large extent depends on the material itself, particularly on the merits, and the operator of the paper, the characteristics of the control level. In other words, to printed Coated Paper Products, must be based on the characteristics of paper, take the appropriate technical measures. Therefore, knowledge and understanding of coated paper printing process technology requirements is necessary.
Coated varieties division process on the basis of their different plus packing and calendering, generally divided into two single-sided light and double light. Nature, is divided from the paint casein paint. Therefore, also known as paint coated paper. Domestic coated paper because some defects due to workmanship, so easy to produce different degrees of variation off powder and flexible, especially in single-sided coating of paper curl more prone to defects, affect overlay accuracy. Improper operation of a number of arts printing coated paper, is also prone to sticking dirty (NCR), powder, slowly dried, star less bright color so it should pay attention to the following questions.
1, a number of species of each coated paper, put into use before the deal with the smoothness of paper, pH, absorbent, dry, flexibility, and surface bonding strength and a series of issues related to printability, were tested and then, according to the characteristics of paper, take the appropriate technical measures, such as the adjustment of ink viscosity, mobility, dry sex and anti-sticking measures to achieve standardization of scientific production, prevent printing bad happening;
2, make a good pad printing pressure debug version of the relevant technology and to ensure that the printing ink layer uniform and bright. Copperplate printing pressure should be obtained even with the appropriate pressure off the heavy powder prone to adverse circumstances, and could easily lead to network imprinting defects is not clear, and the increased wear plate. Instead, the imprinting is not easy to create strong networks, and blind to make up for the pressure increase less than the ink layer due to layout blur, as easy to produce sticky dirty, slow dry, trapping is not superior adverse consequences, so the pressure to be evenly coated paper printing , should be appropriate. Bag liner is more rigid material suitable neutral.
3, coated paper printed with trademarks, packaging products, often pale as background color, color overlay formed by the stack. This improper printing the right technology, but also easy to produce some of the problems affecting the quality, so, in the allocation of Mexican background, we should try to use heat and light of the ink, and dilute the agent is best to use light syrup deployment, so you can put background India better than the last, to prevent friction damage background color ink is printed easily.
4, as copperplate about smooth, less able to absorb ink, printing a large format version field should try to achieve “deep thin printing ink.” That the ink with appropriate depth and tone, so that the corresponding printing ink layer or thin some, that is able to meet the printing requirements hue, but also reduce the incidence of imprinting the end had the opportunity, and prevent color printing is not on the stack. In addition, Paper Adhesion is poor, print up the ink, and sometimes vulnerable to bleaching powder out the end, the first color available on the 19th Indian Oil for Blending resin oil. In order to stack too bright color ink printing, ink can be appropriate in light oil and dry add more oil.
5, coated paper because paint more often encountered in the printing process and print materials off powder shadow phenomenon layout rendering. Such a situation, should pay attention to check whether the installed version of process operation, such as whether the pad plate was biased towards the situation, because the paper too much pressure, then it is easy to paint coated surface silty crushed, powder and lead off shadow spots. In addition, should also check the suitability of ink viscosity, if the printing ink layer over the thickness, too sticky, also contributed to the accumulation of paper powder out page one of the reasons that this situation should consider the application of supplementary material to adjust the quality of the ink These quality problems can be overcome by good.
6, should be well coated paper printing anti-sticking technology related. Coated ink weak, the back and relatively smooth, so that the layout of the printing by the ink volume or multi-color overprinting, prone to dirty sticky issue, and should take measures to overcome the anti-sticking, such as the adoption of a first amount of light oil Anti-viscosity stirring evenly, so that after the accession into the liquid and then stir in the ink, printing can receive a better anti-sticking effect. But the defense should be noted that a reasonable amount of viscosity control, can not exceed 4%, so as not to emulsify the ink, printing ink gloss ink blur, and other undesirable defects in the fall.
In short, the printing of copper Paperboard As long as the master of its properties, as well as the right to a good printed, operation technology related, not only can improve the printing efficiency and can effectively ensure the printing quality.
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