Common problems with printing paper
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First, dry operation and cooling
Drying temperature is not critical for the flexographic printing of paper, but the temperature cannot be too high
High, otherwise it will make the paper crisp, if the paper surface temperature exceeds 2000C there is zoom
can. Therefore, although the temperature of the drying device reaches 1800C-x2600C, the
The high temperature should be controlled within 1500C.
The paper roll enters the winding after the printing is dry, in order to avoid the temperature after taking the paper into the roll
The drawbacks caused by the change, the paper surface must be cooled before it is brought into rewinding to make it temperature
The difference between room temperature and room temperature is within 50C.
Second, post-inspection
In addition to checking the registration of prints during the printing process, hue and optical density, wrinkling
In addition to the abrasion resistance of the pattern and the print, the back of the finished product is checked again after printing.
Condition, gloss and finishing of prints, abrasion resistance of the prints, hue and optical density values And the moisture content of the finished product.