Automatic glass screen printing machine printing machine is suitable for automobileglass, decorative glass, furniture appliances glass and all kinds of hard platematerial printed, machine is composed of feeding pre positioning machine,precision positioning printing machine (host), check the output machine composed of three parts. Transmission system each part is equipped with an independent,respectively assume a, pre positioning, delivering, precise positioning, printing,delivery, inspection, output etc.. When working, the machine runs synchronously in the preset work under program control, to complete their respective processcoordination. The production process go round and begin again, recycling, greatly improve the efficiency of. Very suitable for high quality requirements, product batch big screen printing production needs. But in the screen printing process will always encounter some large or small problem.
A pattern of lines, or flooding
The number of glass screen printing machine printing too much, cause the screen stencil relaxation; positioning loose screen and substrate range; the angle between the scraper and the substrate is wrong, or uneven force; paste consistency is toothin or too dry; the substrate surface rework workpiece after cleaning solvent anddry on the screen at the end of.
Two, line distortion
Ink deployment too dilute, squeegee hard; the stock adjustment unevenness (inksolvent in dispersion unevenness); arrangements after network model solvents or cleaning agents is wet, or rework the surface cleaning agent is wet or dirty; the firstblow prepress, printing material blocking force is too large, the small print mesh extrusion; printing scraper movement (mobile) effective area in the substrate speedis too large, stop or repeated printing; and the fineness of the selected screen mesh size is not.
Three, there are pits ink sticky, and has the impurity, the hole wall; or ink sticky,insufficient scraping force;
The substrate surface is not clean, and of grease; ink sticky, network model with dirt removed, ink particles, high mesh wire net however; screen printing drying rate is too fast, 7building workplace ventilation; quick drying ink failed to block, producewebs; when the squeegee uneven force, or big or small; the substrate surface is not flat.
Four, the pattern line edge burr, gap, cam etc.
Ink deployment when the mature period is not enough, the bubble did not run netresidual ink in screen printing, after the bubble dip caused in the substrate; the substrate surface is not clean, dust and so on, printing improper exertion, lack oflight and unevenness or squeegee, force; printing ink is dry, storage places of dustcause; ink suitable conditions, screen and substrate distance is too large; prescreen cleaning is not thorough.
When we encounter these problems should control all of the above reasons careful analysis of glass screen printing machine printing products quality, the causes ofquality problems to solve, as for non squeegee operations, such as the tension and the network, the best distance problem, screen printing stencil making, surface processing and printing material selection and so on will affect printing quality,these are what we should pay attention to.
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