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Solvent In the Screen Print Is an essential material for screen printing production and print quality is crucial. In screen printing, the solvent and screen printing inks are closely related to the full attention. Solvent in the screen printing of the function: (1) dissolved resin: The resin according to different needs of different solvents to dissolve (polar, non-polar). (2) Liquidity: similar products from different manufacturers have different solubility, directly affects the viscosity of ink. (3) Gloss: different evaporation rate of the same or different solvents in the printing ink film will cause the release of ink film atomization and bleaching, thus affecting the print surface gloss. (4) Drying time: Because when the printing operation to select a different printing, and printing environment, climate differences and the need for formula, the boiling point of different solvents in order to provide adequate drying time. (5) residual solvents: Some low affinity with the resin solvent printing ink film will help open longer Ershi reduce residual solvent. Solvent properties on the screen printing ink set: (1) solvent: in the production of ink, the ink with the stable quality of the basic conditions for dissolution of resin used in solvent viscosity. (2) to help solvent: the main solvent with excellent dissolving power, but showed defects in other conditions when the solvent used in power a bit weak, can assist to resolve certain shortcomings of the solvent. (3) thinner: the resin of the ink itself, does not have the solubility, and dissolution of the main solvent mixture has the function to achieve the lower viscosity ink. Diluted ink effect. Solvent dissolves the relationship between force and Screen Printing (1) of the ink itself, the good solubility of ink has all the appearance of texture, so that a stable ink viscosity and fluidity, not easy to gel by adding an appropriate cosolvent can adequately diluted the effect of dispersion . (2) of the printing equipment: Add appropriate solvent friction can cause devices increases, so fast printing equipment depreciation; the same time may cause ink frequent downtime caused by Serbian version. Boot operation, accelerate the wear of parts and lower production efficiency. (3) the relationship between film and printing ink: solvent selection must take full account of the printing ink film gloss, flatness, residual resistance, color fastness, ductility, adhesion. Note choice of solvent (1) screen printing ink solvent commonly used divided into ketones, alcohols, benzene, ester, alkyl, five. The main function of solvent dissolved resin and diluted ink. A variety of ink should carefully choose the appropriate solvent, such as: PVC system, the ketone can be dissolved in benzene slight expansion, alcohol gel, a choice must be noted. (2) to help force the dissolution solvent: cosolvent similar functions and the main solvent, so be sure to choose the right solvent will not cause ink to help create gel, loss of mobility and viscosity and so on. (3) original specification of solvent purity (percentage): original specifications and purity solvent ink solution directly affects the extent and degree of dilution. If it is not original solvent, there may contain a small amount of water or impurities, the quality of the print effect is playing, may result in loss of printed surface gloss, adhesion phenomena of variation and the Serbian version. (4) solvent evaporation rate directly affect the drying rate of ink. Due to the development of printing technology and fast printing speed, it should carefully choose the appropriate solvent, otherwise the impact of the printing operation of a great, fast dry ink caused plug version, slow dry is easy to back stick and so on. Highlights the essence of all in 2009, "China Industry News Daquan? Silk screen printing industry, particularly paper," On-line free of charge from More exciting, please see>> We are high quality suppliers, our products such as 3G GPS Tracker Manufacturer , Mini Pet Tracker for oversee buyer. To know more, please visits Mini GPS Pet Tracker.
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