How To Deal With Quality Of Corrugated Board Printing Machine Failure
Corrugated paper Board Print Set printing machine printing equipment
, cutting and creasing production functions into one, simple configuration, small footprint, is simple, easy to control quality, in Carton Production processes play a role. However, if the old equipment or machinery used to adjust properly, print quality when it is easy to some failure, are classified as follows:
1, page graphics appear dirty version, paste version or partial failure of quality graphic imprinted unclear
1, machine stamping parts associated with poor quality due to failure:
When the plate cylinder shaft, the first impression roller, shaft, Gear Associated with imprinting appears crucial component wear, loosening of the situation, the imprinting process of plate cylinder or impression roller jumping or sliding phenomenon arises, Er Shi layout and printing Cardboard Exposure is not normal (ie pressure instability), resulting in cardboard print version or page appears paste Local Photo Imprinted unclear. This should be through careful observation and analysis, to identify the exact fault location, take the appropriate measures to deal with, on the wear and tear, loose parts to repair, to eliminate the fault phenomena.
2, inking roller poor quality due to failure:
When the inking roller shaft head loose, inking roller roller body appears bent, deformed or damaged surface phenomenon, can cause pages dirty version, paste version or local Photo Imprinted unclear happen. After the reason has to take corresponding measures to deal with, so between the inking roller and the printing plate to maintain uniform and appropriate contact conditions, damage to the inking roller to be replaced in order to eliminate failure phenomenon.
3, the pressure roller to adjust the quality of failure caused by improper:
If there is pressure roll position the case high or low, resulting in contact with the corrugated cardboard too tight or too loose, there will be dirty version, paste version or local Photo Imprinted unclear circumstances. Then adjust the pressure roller, through the appropriate position, so that the pressure gap between the roller and the roller and the thickness of cardboard to adapt the layout to ensure that the printing ink to keep clear.
4, feed roller does not cause the quality of fault location:
Feed wheel position if not adjusted, in the transportation board after the printing process, not as cardboard imprinted on the dry rub was rolled to the rear wheel, it will cause a blot transfer phenomena, from the cardboard on the blank page dirty. Transferred to this board as long as the feed rollers do not have the printing layout of the site, you can avoid the failure phenomenon is.
5, the quality of color caused by improper failure sequence:
Than if page full color graphics arranged in the first group of printing, when the corrugated cardboard into the second color group of institutions in the printing process, due to board the first color ink printing graphics because large, slow drying, very easily imprinted on the transfer of dirt from the resulting page. Just ordered the small size of the page group in the first color printing, large area of the layout will be arranged in groups after the color printing, can be better to avoid the faults.
6, plate thickness caused by uneven quality of failure:
When the rubber thickness is not uniform, the plate height difference occurs layout, layout high place it is easy to paste version, where the low layout prone to dwell on failure, resulting blot is not clear. To avoid this undesirable situation from occurring, on the use of sporadic Plate , And as a printed page, made a number of small pieces of (referring to the kind of savings instead of a rubber plate plate plate core technology), should be used with a separate plate Make This difference is the thickness of the relatively micro. If you have good rubber version of the system, there is poor when the thickness can be thin, partial plate on the back of more viscous layer of tape so that the whole plate thickness remains basically the same, to ensure that the printing pressure and the thickness of the corrugated board layout and written caused by uneven quality of it.
After molding, corrugated cardboard, if the surface is damaged some signs of depression, the depression part of the paper will also appear unclear quality imprinting defects. This use of a full step up pressure to make up for printing, then easily lead to the text, paste from the shortcomings of the line layout. To avoid this from happening, corrugated board in the stack, handling the process, should pay attention to light to move, light up, soft reduction (to control the good piling height), avoid use of throwing, smashing, pressure and other undesirable behavior for handling the production.
Second, graphic print layout or unstable location allowed the quality of fault
1, corrugated board printing position due to warping are not allowed:
If warping corrugated board are bad situation, then, corrugated cardboard and into the paper in the process of positioning, prone to slip on, may even reach the machine on the paper side of the rules, resulting in cardboard printing location is not prospective or unstable. Therefore, warping of the corrugated cardboard, paper, printing should be as much as possible into a relatively flat edge as the positioning of the rules of paper side of paper. In addition, should focus on the source of good quality control process through single machine operator reasonable grasp of the machine's speed and preheat temperature, base paper moisture content in comparison with the warm area to coordinate the state. Also, with paper, you should pay attention to moisture compared to similar Cardboard And corrugated paper for auxiliary mounted synthetic, this produced corrugated roughness is relatively good, can effectively ensure the printing of registration.
2, caused by improper operation of the printing process are not allowed here: If improperly installed version
location, are likely to cause inaccurate position of the printing layout. Because of defects in the corrugated board warping just entering the plate cylinder, even if there are trace amounts of slip, the board's delay will be noticeable tip deflection position. Therefore, the corrugated board side with chromatic layout should be started towards the drum position feeding position, and accordingly determine the installed version of the position to improve the accuracy of corrugated board of the overprint.
3, caused by bad positioning of the machine are not allowed:
When the machine Chain , Rules and other components are loosening, they easily lead to inaccurate position of the printing layout, this, corresponding measures should be taken to repair, remove parts of loosening, the position to ensure the accuracy of corrugated board printing.
Third, cardboard on the indentation line is not clear
Press an indentation in the convex and concave wheel of the corresponding round of the Division achieved when the pressure rolling, in which concave round the shaft could be adjusted to maintain the indentation with the convex wheel clearance needed . If the concave rotation too low, it will cause a pressure line is not clear enough to make indentation. In addition, the convex and concave round wheel and other parts of the shaft if there loosening, will create
How To Deal With Quality Of Corrugated Board Printing Machine Failure
By: polo
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