At present corrugated carton industry use water-based ink printing equipment has four kinds of production methods, their characteristics different from each other.
One is LianTiaoShi single printing mode, this kind of means can only printing, no slot and die cutting.
2 it is generally use the printing press round and round the production of die cutting way, the way and the ink printing, the slot or die cutting, only after adhesive (box) can nail shape.
Three is to use fully automatic printing and slotting, fold the bonding (nail box) mode of production, the machine for folding forming and adopt ink printing system, is on a one-time molding machine.
The fourth is a advanced printing, round flatten die cutting way, it is the feature of multiple color printing equipment can be, high accuracy, printing products can reach color printing effect, especially suitable for color box sales packing. The above several production mode, its common feature is the ink printing, printing principle and equipment structure basic same, just how much color, include line number and process equipment different ways. The printing process by many factors and the influence and restriction, a lot of problems is not by operators on simple and adjustment can be solved. Only through the synergy, try to reduce and avoid during production in some of the unnecessary problems.
Gold Printing Group will to ink printing or frequently of common problems are analyzed, and corresponding take the necessary measures.
1. Slotting knife and longitudinal line pressing size, not produce printing position is not accurate
Cause analysis: as the slot, not according to your drawings and line pressing process of size adjustment, cause cardboard length or width size deviation, finally affect manufacture printing position no.
Solution: first should be according to the drawing size adjustment manufacturing slot or line pressing size, requirements, and then according to accurate position accurate position to adjust the size of the plate position, check the slot or line wheel wear generated by the deviation.
2. Row system, causing no print position of the plate to adjust
Cause analysis: because local f and plate position shown not clear, layout much error when, in the actual production of printing position is obvious causes deviation. The printing equipment basic is printing, publishing and cylinder is in the plane, inevitable meeting produces vertical position errors, and because of the size of the printing pressure has shrinkage rate problem.
Solution: first in making 1:1 ink figure, should according to normal percentage of shrinkage rate draw. In typesetting strictly according to the ink figure position adjustment print. In the precise color accuracy, high should be used "graticule marker" typesetting method, with the figure of the plate and, when necessary, to is graticule marker used a magnifying glass check deviation.
3. Printing double and leakage problem. White
Cause analysis: this two problems in the process of production is often appear. Printing designs or words appear around double, because anilox roll and the pressure plate cause; Printed in the front edge of the double, it is because of the printing roller and embossing roll the stress caused between. Large size printing, the leakage white is interlocked with pressure seal because printing roll roller pressure produced enough. The two problems is the opposite of the pressure creates.
Solution: printing double problem shall be adjusted anilox roll and version roller clearances between pressure and pressure, commonly known as on. Double is because stress, roller extruding print (flexible edition) refers to the deformation, so to increase the two roller clearance less pressure. Printing leak white problem should be adjusted version roller and embossing roll gap between pressure and under pressure, commonly known as. Because version roller and embossing roll gap is too big, large area produce false in printing, it needs to be under increasing pressure. Another print not smooth, edition line, the printing plate hardness, etc will influence the quality of the problem, should carry out the local adjust.
4. Many color printing misregister
Cause analysis: misregister problem in printing industry is universal, because it is various factors, solve up is not very easy thing. First many color printing machine itself version roller and location of the accuracy of precision is direct factors. Second is the paper roll, drawing roller adjusted, traction with use, the accuracy of the arrangement of plate, and cardboard warping problem all can produce misregister problem.