The factors affecting the printing quality of the automatic screen printing machine are the specifications for the operation and inspection of the screen printing machine. If the printing specifications of the automatic screen printing machine and the printing inspection specifications of the screen printing machine are strictly required, the printing quality of the screen printing machine can be greatly improved. Every screen printing company should have screen printing machine printing operation specifications and screen printing machine printing product inspection specifications.
First, automatic screen printing machine printing operation specification requirements
1. Incoming material inspection: Check whether the product has leakage process, plating, spraying, oxidation, etc., especially in the range of 20 mm of silk screen printing, no surface defects are allowed. If there is any defect, it is clearly marked and placed in the defective product area. And notify the relevant units to re-examine.
2, select the screen version: check the screen font according to the picture, font size, kerning meet the requirements to check whether the screen version is damaged.
3, blending ink: self-drying curing ink and hardener 10:1 mixed, then use slow-drying water to adjust the viscosity to 5-15% to the appropriate viscosity before using the color ink, the ink should be fully stirred, the ink can be confirmed before use.
Second, the automatic screen printing machine printing inspection specification requirements:
As shown in Figure 1, after positioning the screen printing machine screen, use a caliper and a tape measure to check whether the positioning size meets the drawing requirements. When positioning, ensure that the screen has a certain gap (depending on the screen version, usually about 3-5mm).
2, screen printing machine printing method: hold up the scraper, let it pull up at 45 ° -50 ° angle with the screen, the blade is balanced at the two ends of the running direction, the printing direction is consistent with the printing position when the position is adjusted, to prevent printing Middle position
3, silk screen first according to the surface of the screen to strictly check the size of the screen printing, and check the pattern for missing prints, misprints, dry nets, fat oil, dust, burrs, lack of oil breaks, oil spills and other parts of the ink pollution .
4, silk screen color and standard color card, the customer confirms the swatch comparison, visually no obvious color difference.