| Water-based ink printing corrugated paper four kind of way |
From:Shenzhen WeiYou Printing CO., LTD Time:2013-3-13 |
At present corrugated carton industry use water-based ink printing equipment have four kinds of mode of production, they have different characteristics.
One is the chain single printing mode, this kind of means can only printing, no slotting and die cutting.
The second is the widespread use of printing and circle pressure circular die cutting production way, the way using the ink printing, the slot or die cutting, just adhesive (box) can be forming.
Three is to use automatic printing, folding adhesive (box) mode of production, the machine for folding forming and use the ink in printing system, is a one-time molding machine.
The fourth is a advanced printing, round flat die cutting way, its characteristic is multicolor printing, high precision equipment, the product can reach the effect of color printing, especially suitable for color carton sales package. The above several mode of production, and its common feature is the ink printing, the printing principle and equipment structure is basic and same, just how much color, checkered line number and process equipment different ways. Printing process is affected by many factors and the influence and restriction, a lot of problems not by operators on simple adjustment can solve. Only through the cooperation, as far as possible to reduce or avoid during production in some unnecessary problems.
This paper printing ink of the easy or frequent common problems are analyzed, and corresponding to take necessary measures.
1. Slotting knife and longitudinal line pressing size no, produce printing position not accurate
Cause analysis: due to the slot, pressing line pressing process drawing required size adjustment, cause board length or width manufacturing size deviation, and ultimately affect printing position no.
Solution: first of all should according to drawings manufacturing size adjustment slot or line pressing size, position, and then according to the requirements accurately the size of the accurate position adjusting plate position, check the slot or line pressing wheel for wear generated deviation.
2. Exhaust system print position no, causing plate of readjustment
Cause analysis: due to the chromaticity and local forme position mark is not clear, layout is larger, the error in the actual production of printing position is obvious produce deviation. The current printing equipment basic is roller printing, and layout is on the plane, inevitable meeting produces longitudinal position error, and because of the size of the printing pressure have shrinkage problem.
Solution: first in the fabrication of 1:1 ink map, should according to normal percentage of shrinkage rendering. When composing in strict accordance with the ink diagram position adjustment printed. In the chromaticity accuracy high, should use the "cross" layout method, plate and ink graph reticle to is used, if a magnifying loop to inspect deviation.
3. Printing ghosting and leakage white problem
Cause analysis: the two problems in the process of production is frequent. Printing design or words occur around double, because anilox roll and plate pressure caused by too much; Printing front edge appear double, it is because the printing roller and impression roller between caused by stress. Large area printing through at the end, leakage white is due to the printing roller and impression roller pressure generated is not enough. These two problems is the opposite of the pressure caused by.
Solution: printing double problem should adjust the anilox roll and version of the roll gap between the pressure and the pressure, commonly known as. Double because the pressure is too great, anilox roll extrusion printed (refers to the soft version) deformation produced, so to increase the two roll gap less pressure. Printing leakage problem is white should be adjusted version roller and pressure seal between the roll gap and pressure, commonly known as the pressure. Due to the version of the roll and stamping roll gap is too big, in the large area printing produce false, it is need to increase the pressure.
Other printed not smooth, edition line, plate hardness and the quality will affect the production of the above problems, should carry out the local adjustment.
4. Multicolor printing overprint no
Cause analysis: misregister problem in the printing industry is widespread, because it is many factors, solve up is not very easy thing. First multicolor printing machine itself version of the roll and the position precision accuracy is a direct factor. The second is into paper roll, traction roller adjustment, traction belt use, the accuracy of plate arrangement, and board warping problem all can produce misregister problem.
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