Frosted glass screen printing faults causes are multifaceted, involving silk screen, silk screen scraping edition, screen printing ink, screen printing equipment, screen printing materials, and operating techniques, and many other factors. Screen fault generation, there are reasons for a single area, but more than that was for various reasons, cross-impact results. This is the operator in determining cause of the malfunction and take appropriate countermeasures to pay particular attention.
First, paste version
Paste version also known as blocking version, refers to the graphic screen printing plate through-hole part of the printing ink can not be transferred to the substrates on the phenomenon. The emergence of this phenomenon will affect the print quality, serious or even be unable to engage in normal print. Generated in the process of screen printing paste version of the causes are complex. Paste version of the reasons for the following areas can be analyzed.
① substrates reasons: did not deal with a clean glass surface, there is also a watermark, paper printing, mimeo, fingerprints, dust particles and other dirt. Resulting paste version.
② Ink reasons: in the screen printing ink pigments and other solid particles larger subjects, will easily give rise to block mesh phenomenon.
③ screen printed version of the reasons: a good screen printed version of the system before use to wash with water clean and dry before using. If the system placed too eventually becoming a good edition printed in time to save the process will be more or less on the adhesion of dust, printing if you do not clean, it will result in paste version.
④ printing pressure causes: the printing process of embossing force is too large, will scraper bent scraper with the screen printing plate and substrate is not a line of contact, the face-contact, so each timber can scratch both China and India ink Guagan Jing, leaving residual ink, after a certain period of time will result in paste ver
