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Screen printing ink, click to enter the Chinese version

The screen printing process can be said to be able to printing all goods bearing printing of any shape and can do a variety of special printing effects, such as books or box cover, UV-wrinkle effect by screen printing, screen printing ink is dry such as drying shrinkage of the surface layer and the underlying, it will produce wrinkle wrinkles printing effects, which was originally printed defects in a special printing process. Control punch of the process to achieve the effect of wrinkle in the screen printing process, in the printed surface of the formation of a patterned texture, so as to achieve a unique surface decoration effects, you can raise a lot of the added value of the printed matter, such The screen printing ink is also called wrinkles ink, printing material market are sold. The production method is the ink is printed on the surface of the gold and silver cardboard, stickers and other materials by specific wavelengths of ultraviolet radiation, the ink surface in the film when contraction of the formation of wrinkles, like metal hammering over or materials crease after a special printing process results, in some places the wrinkles ink, also known as hammer ink. UV wrinkled printing ink is a UV ink, it has the characteristics of the ordinary UV ink, it is in a certain wavelength of ultraviolet light irradiation, the link within the ink material crosslinking reaction from the liquid into a solid state to complete curing of a process so as to achieve the wrinkles of a special ink. UV wrinkled printing ink after curing by UV radiation through a special wrinkle device, surface wrinkles like effect. Adjust the level of of the screen mesh, wrinkling the transmission speed of the device, the viscosity of the ink and the UV lamp and the distance of the print, a different wrinkle. UV wrinkled printing ink printing, you must first pass through the low-pressure mercury lamp, so that the partial curing of the ink surface, and then medium pressure mercury lamp, completely cured. Printing from the wrinkles thickness and arrangement of the ink layer thickness, low pressure mercury lamp, a great relationship, by satisfactory after repeated practice, special printing process effect. UV wrinkled printing ink is mainly used for the PET gold and silver cardboard, plastic film, metal, glass and other substrates, the printing of high-grade packaging boxes, cigarette cases, calendars, wine labels, craft products, such as special materials. Do out of the print is on the grade and high added value, there is good decoration process effectiveness and market value, to achieve a good sense of beauty, by the pro-lai of the majority of print designers in the screen printing industry has been widely used. Wrinkles the size of the coating thickness, the thicker coating, the greater the wrinkles. Printing through the mesh to the level of control the pattern size. Screen printing, in order to get the wrinkles of the ideal UV wrinkled printing ink printing effects, need to repeatedly adjust, and ultimately achieve the desired process effect for many years engaged in the encounter in the UV the wrinkles ink printing in the printing industry of the old master to resolve this problem, because many factors affect the quality of the UV wrinkled printing ink screen printing, such as ink selection and use of skills to master the printability of the substrate, screen mesh stretching angle, print pressure, squeegee angle, printing speed, the drying rate If these factors are not well controlled, it is impossible to get ideal printing quality of finished products. Therefore, to fully grasp the screen printing printing techniques. (1) UV the wrinkles ink before use should be fully stirred. Using generally without dilution can be directly printed. If it proves necessary dilution, can be used wrinkles ink varnish (thinner) and dilute the ratio generally should not exceed 5%. For coloring, add the paste and mix thoroughly after printing, but the dosage is generally not more than 3%. Series, and brand UV the wrinkles ink generally not interchangeable blending in order to avoid adverse reactions affect the printing effect. (2) for some poor adhesion substrates can be transparent ink printing, and then printed UV the wrinkles ink, can solve the adhesion problem. (3) in the batch before use, a small amount of trial and full recognition of the volume use to meet the requirements. Ink should be stored in a cool dry place, tightly sealed after use, be taken to avoid contact with open flame and high temperature. The shelf life is generally one year. (4) UV wrinkled printing ink usually use screen printing, UV curing, according to the need to reach wrinkles to choose a different mesh, we know that the higher the precision of the print, screen printing, the optional Mesh the greater the number, on the contrary, the choice of the lower mesh. Mesh the higher the number, the smaller the resulting wrinkles effect, on the contrary is the greater. Therefore, in the UV wrinkled printing ink screen printing, based on practical experience, generally 100 ~ 200 mesh screen, if the printing equipment, high precision, you can choose the mesh screen. (5) Select the appropriate network distance. Network distance is less than 5 mm, the image can be fully rendered in the substrates, when the network away from the more than 5 millimeters, with the increase of network distance, the images presented in the substrates less and less. According to practical experience, the network distance setting range is 2 to 5 mm is more suitable. (6) to select the appropriate stretching angle. Based on practical experience of screen printing, stretching angle of 45 degrees, the moire is the most serious stretching angle is 60 degrees, 75 degrees, the moire is more serious, the stretching angle of 30 degrees, less moire Stretching angle of 0 degrees, 10 degrees, 20 degrees, 25 degrees, print basically did not produce the moire Stretching angle range is selectable in less than 30 degrees. (7) to adjust to control the printing speed and blade angle. The printing speed of change will not bring changes in the quality, only to change the size of the ink wrinkling pattern. Printing speed, pattern; slow printing speed, pattern. Similarly, the blade angle changes will not change print quality, only to change the pattern size. Blade angle, the contrary, the pattern on pattern. Therefore, UV curing, the best pattern effects to adjust the printing speed and control the blade angle. (8) to pay attention to control the ink lead to wrinkles and drying speed. Cited wrinkle too slow, printed matter without wrinkling. Experiments show that when the speed is less than 14 m / timeshare cited wrinkle, the ink is basically not wrinkle, when the rate reached more than 14 m / min, the ink will wrinkle. Therefore, the general production optional 14 to 20 m / min speed cited wrinkle. (9) Note that the ink film thickness and color of the ink for UV curing. The thickness of the screen printing ink when the ink is too thick will affect the curing effect of all factors affecting the printing of film thickness will affect the curing effect. Factors of the film thickness, the sharpness of the mouth of the screen mesh, tension sensitive adhesive thickness, squeegee hardness, plastic scraper, squeegee angle, squeegee speed, pressure, pay attention to controlling these factors, in press. In addition, UV screen printing ink, the pigment had a greater influence, the effect of UV-curable ink of different colors, different thickness of UV wrinkles there are differences, mainly due to a variety of pigments to light absorption, reflection and ink pigment content due to a difference. In general, the more difficult to curing of white, black, red, yellow, blue, green, varnish, transparent oil-curing. Use of the characteristics of the photoinitiator, by selecting the type of photoinitiator, the lower color density, UV wrinkled printing ink of different colors curing consistency of the parameters to achieve the same curing conditions; the thickness of the ink, it should be by changing the parameters of the network version of the squeegee hardness and squeegee speed of adjustment to ensure that the requirements of fast-curing inks. (10) found that wrinkles are not effective in use, such as to adjust the control from the UV curing lamp to avoid the lights and UV curing lamp and wrinkles lights until the best results. Check the wrinkles lamps and conveyor distance is too large (typically 2 to 5 cm). Broad prospects for the screen printing industry, Carel & P label and you were to grow a total of development!

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Screen printing ink, click to enter the Chinese version