Pad printing process common faults and elimination methods
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Pad printing technology is one of the representatives of indirect printing process, it is made of soft rubber pad printing head moving plate on the graphic to substrates above printing method.Pad printing ink of glue stick head down to the depths of the plate by then lift, move to the press above substrates, transfer the ink on the surface of the rubber head to the transfer of product surface ideal situation is as follows.
1.Rubber pad printing head under the condition of the minimum deformation to plate by the depths of the ink stick up completely.
2.Ink on the surface of the rubber head, basic not change shape and printing eligibility traces of change.
3.Ink on the surface of the rubber head completely transferred to the product specified location.
4.Ink and meet the requirements of the adhesion and physicochemical properties of products.
About graphic fuzzy and edge sharpness and elimination methods
Pursuit of graphic clarity is the basic requirement of any printing process, poor resolution means that the edge of the lines and words very fuzzy.This kind of problem must first check whether the plate is qualified.Common practice is to use a magnifying glass to observe if there is a defect and graphic edge sharp enough place, if the plate is made very rough or don't have enough clarity, so how to adjust the machine would be futile.The depth of the plate is one of the most important indicator, the depth is deep often makes ink cannot be completely transfer, depth is too shallow often make the ink transfer is restricted, and the ink transfer of instability is by fuzzy objective performance.Plate problems, there is no doubt that must make a new plate making.For an enterprise, which may be specific data is difficult to for reference, set up database is the most important thing.
The so-called fuzzy is essentially ink formed by trace does not keep its original form.This is often associated with the occurrence of metastasis to the unstable ink.Pad printing ink should not only have a plastic screen printing ink, and thixotropy of offset printing ink.But the reality is we often to replace with screen printing ink, screen printing ink surface tension range is too wide, this brings to the fine control of pad printing challenges, we recommended practice is to first choose professional pad printing inks, next to in strict accordance with the ratio of thinners add, to control the temperature and humidity of the workshop.(see table 1)
Nicky oulette pad printing machine series performance:
1. The original FESTO pneumatic components all adopt imported Germany, long service life.
2. The screen cylinder adopted across Germany FESTO rodless cylinder, upper and lower cylinder with German FESTO rod cylinder.
3. Used in the printing guide rail for TPI in Taiwan.Electromagnetic valve buffer using Japan SMC, waterproof device adopts Germany FESTO.
4. The use of special protection circuit, safety performance is high.
5. Choose precision production line guide pin, guide accurate and stable.
6. Screen adopts special positioning method, easier to para set-up.
7. Design modelling beautiful generous, the body all adopt the high end, keep body new brilliant.
8. The light touch control panel, simple and convenient operation, to ensure that the machine is stable and reliable, and security.