首页 仿金属蚀刻油墨丝网印刷有机玻璃制品要点(Key points of imitation metal etching ink screen printed organic glass products)

仿金属蚀刻油墨丝网印刷有机玻璃制品要点(Key points of imitation metal etching ink screen printed organic glass products)

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仿金属蚀刻油墨丝网印刷有机玻璃制品要点(Key points of imitation metal etching ink screen printed organic glass products)仿金属蚀刻油墨丝网印刷有机玻璃制品要点(Key points of imitation metal etching ink screen printed organic glass products) 仿金属蚀刻油墨丝网印刷有机玻璃制品要点(Key points of imitation metal etching ink screen printed organic glass products) In imitation of metal etching ink screen printing glas...

仿金属蚀刻油墨丝网印刷有机玻璃制品要点(Key points of imitation metal etching ink screen printed organic glass products)
仿金属蚀刻油墨丝网印刷有机玻璃制品要点(Key points of imitation metal etching ink screen printed organic glass products) 仿金属蚀刻油墨丝网印刷有机玻璃制品要点(Key points of imitation metal etching ink screen printed organic glass products) In imitation of metal etching ink screen printing glass products has obvious effect of etching ink film, full, three-dimensional sense of strong, and the product packaging show high-grade, has been enlarging, wine, cosmetics, health products and other industries widely used in packaging and color printing. Can also be used for greeting cards, calendars, organic glass, organic glass plate, plexiglass plate, organic glass, billboards, paintings and other printing; UV imitation screen printing ink corrosion remember can also produce suede and Matt effect, can make the organic glass printing soft, solemn, elegant, luxurious, difficult to reach the general ink the effect of this it has been rapidly popularized and applied. I. UV curing ink This ink "short and thick, the additive particle diameter 15~30 M. After printing, due to the rough surface of the ink film, under the illumination, the reflection is diffuse reflection, and the gloss of the film surface is darker. There is no film surface with metallic luster, under the illumination, the reflection is positive reflection, and the gloss is stronger, so the film surface is dark and concave, and the surface without film surface is bright and convex, and the effect of the two is opposite. In order to reflect the inherent luster of organic glass, should be transparent with ink, ink is hiding nightmare is not recommended. UV imitation metal etching ink is usually the photosensitive resin and other materials into a light colored transparent paste; also can be made into color etching ink. Its components are as follows. UV etching ink: main agent (silicone 15~30, m); binder (photocurable resin or prepolymer, crosslinking agent, photosensitizer, inhibitor). Two, UV imitation metal etching ink screen printing points 1. plate operation quality control (1) the screen mesh and photographic film thickness The etching ink has a certain roughness, if you choose the screen mesh is too high, because the small mesh, printing ink is not easy to pass by or rarely, the ink unevenness, appear grey phenomenon, resulting in poor effect of etching. If the selection is too low because of too large screen mesh, mesh, ink through excessive lead paste version, also affect the printing effect. Grind coarse mesh: mesh 100~180 mesh; film thickness below 10 m. And scrub grain (or ice flower): 150~250 mesh screen; photosensitive film thickness 12~14 M. The fine and scrub (or ice flowers): 200~300 mesh screen; photosensitive film thickness 14~16 M. (2) because of the roughness of the imitation metal etching ink, the aluminum mesh frame and screen printing machine are the most used in the printing, in order to prevent the screen deformation and make the pattern overprint difficult. (3) stretching operation; In the stretching of the network, the use of oblique type, as far as possible to reduce the sawtooth, improve the precision of plate making. (4) determination of tension The size of the tension is directly related to the flatness and printing quality of the scraped film. The tension is too large, the screen is brittle and printing of the scraper reaction, easy to rip the screen; tension is too small, the soft screen printing, the scraper can not produce the necessary force to be scratched or printed blind dot dot. Only moderate tension, to ensure that the size of the printing, printing accuracy, so that overprinter accurate, and good elasticity of the wire mesh, dot clear, resistant to print, under normal circumstances is not easy to break. (5) when making the silk screen, adopt solvent resistant or water resistant photosensitive glue, develop with water, no pollution, solvent resistant photoresist printing plate, and then use it after printing. (6) because the photosensitive film is thicker, the screen needs a longer exposure time to harden the photosensitive layer. At the same time, the development time is lengthened appropriately, which can make the effect more complete. It is better to carry out two exposures so that the photosensitive film can be fully solidified and the screen printing ability will be enhanced. 2. quality control of printing operation Imitation metal etching ink should be fully stirred before screen printing can be used, in the printing process should also pay attention to stir, in order to prevent ink layer uneven or no ink phenomenon. Imitation metal etching ink and ordinary screen printing ink, not only can use screen printing machine, also can use manual printing. Taking into account the characteristics of the etching ink itself, Such as the ink itself is thick, printing resistance is large, the design requirements are high, the printing ink layer requirements uniform, so generally use screen printing machine is more appropriate. At the same time, the printing pressure, scratch angle and screen height should be adjusted accordingly so as to control the printing quality and prevent the premature damage of the screen. (1) the use of assistants - in imitation of metal etching ink in the proof, do not add other solvent free, only when the ink stencil does not go there in the printing process, may be appropriate to add a small amount of diluent mixing after printing. Add too much thinner or stir enough, will greatly affect the metal texture, but also affect the gold film on aluminum in firmness and dry. So when the ink in the ingredients, a variety of additional materials must be stirred evenly. In order to reduce the printing ink on the film surface leveling, in the ingredients, without or less dilution or leveling agent, to promote the formation of asperity rough film surface. Dilution and cleaning should be done with special diluent or industrial alcohol. (2) selection of scraper; UV ink can not be made of polyurethane scraper, special rubber scraper should be used. Scraping strip: its hardness should not be too high, generally 65 of shore hardness. The shape of the scraper: the plexiglass is plane, the right angle scraper should be chosen; when the substrate is convex, the taper scraper is adopted; The length of the scraper requires that the squeegee is slightly wider than the width of the printing plate, so that the ink is pushed back and there is no residual film on both sides. Scraper pressure master or not, is also an important factor can not be ignored. Because "short and thick, low pressure, ink over the net is not smooth; pressure, the amount of ink through the mesh will be too much. Both of them will affect the printing quality and the printing effect of imitation metal etching. The pressure of the scraper should be controlled a little larger than the pressure of the printing ordinary color ink. When printing, the pressure should be the same size, so as to avoid the uneven thickness of the ink layer caused by the different pressure, so as to affect the evenness of the concave and convex rough surface. (3) in printing process, the wetting state of imitated metal etching ink should be maintained to ensure the consistent effect of the printed matter. The degree of wetting is determined by user experience. When the ink dries, add a special diluent in time, and continue to use after mixing. (4) the drying of the imitated metal etching ink should be based on the thickness of ink and the speed of the belt conveyor of the light fixing machine, and the power of UV in the 80W~6.4kW of the UV light tube of the optical fixing machine. The cooling machine must be equipped with a cooling device so as to avoid the thermal deformation failure of the composite paper in the light fixing machine.
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