Inventory screen printing operations how to avoid quality problems
In the fast printing industry, for the quality of screen printing operations and handling should not be very detailed understanding, the following, Xiaobian to give you an inventory of it. 1, screen printing sticky screen version Scratch EdIn the fast printing industry, for the quality of screen printing operations and handling should not be very detailed understanding, the following, Xiaobian to give you an inventory of it.
1, screen printing sticky screen version
Scratch Edition and the substrate angle between the problems between them, not a line of contact, but a small plane contact; Screen and the substrate distance is small, or the tension of the screen is small; Screen printing, the printing pressure Large, ink thick sticky net; printed material is too thick and so on.
2, the line distortion
Too many screen printing, silk screen caused by loose template; positioning loose screen and the substrate distance changes; scraper and substrate between the wrong angle, or uneven force; printed material too thin or too dry; rework After printing the surface of the workpiece after cleaning the solvent to play dry silk screen and so on.
3, patterns or lines of flowers
Printed material is too thin, scratches and India when the force is too large; uneven printed material (uneven dispersion of the solvent in the printed material); 揩 network after the mold or the cleaning agent solvent is not dry, or when the workpiece surface cleaning The agent is dry or dirty; after the first scraping, the sealing force is too large, so that a small amount of printed material out of the mesh; printing scraper movement (moving) speed within the effective area of the substrate is too large difference , Halfway stop or repeat printing, etc .; the fineness of the printed material is not detrimental to the number of selected screen mesh.
4, pattern line glitches, gaps, cams and so on
Substrate surface is not clean, and oil; printed material sticky, die on the mold has not been removed, the particles printed material, high mesh count mesh pass; screen printing drying too fast, the screen printing workplace Exhaust; Quick-drying printed material failed to timely seal, resulting in netting; scraping uneven force, or large or small; substrate surface is not flat and so on.
5, pitting
Printed material sticky, and with impurities, plugging hole; or printed material sticky, scraping force is insufficient; when the maturity of the printed material deployment is not enough, the residual bubbles in the print material did not run the net, the screen printing bubbles stained in the substrate Caused by the substrate surface is not clean, dust and other effects, the printing force is not appropriate, light and uneven or scraping, lack of force; printed material is not dry, storage place caused by dust; printed material under the right conditions, the net Edition and the distance between the substrate is too large; prepress screen cleaning is not complete.
6, Screen printing solution
Careful analysis of the reasons for the quality of the problem, to solve the cause of the problem, as non-scratch the quality problems arising from the operation, such as Stretching problems, the optimal distance problems, screen printing stencil making problems, surface treatment issues and printed materials And so on will affect the screen printing quality pros and cons.
The above is a small series for everyone inventory screen printing operation quality problems and solutions, hoping to help to quickly print the printing industry.
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