Carton printing FAQ, failure analysis lifting
Most Carton Manufacturers have set Print , Cutting, creasing production function in one of the printing and die cutting Slot Machine , Equipment, simple operation, relatively high degree of automation, quality easy to control the production process in the carton play a role, but if aging equipment, machinery used to adjust properly, it is easy to print some trouble when the phenomenon of the production process now Common problems encountered in the printing type of regulation.
Page graphic appears dirty, paste version or in part, ambiguous quality graphic imprinted
1, machine stamping parts associated with poor quality due to failure
Roll axis when the plates first, embossing rollers head, shaft, gear, and associated with the impression there important parts wear loose, the plate in the imprinting process will therefore roll or embossing roll produce the phenomenon of jumping or sliding, because the pressure instability, resulting in contact with Indian board layout and abnormal, causing the surface of cardboard printing paste version or partial graphic imprinted confused. Through careful observation and careful analysis, to identify the exact fault location, take the appropriate measures to deal with, on the wear and tear, loose parts to repair, eliminate failure phenomenon.
2, inking roller failure caused by bad quality
When the inking roller shaft head loose, inking roller bending roller body there, deformation or surface damage, it will also cause dirty pages, paste version or partial graphic is not clear. Should identify the reasons and take appropriate measures to deal with, so between the inking roller and the printing plate to maintain contact even without the right conditions, damage to inking roller to be replaced in order to eliminate failure phenomenon.
3, pressure roller to adjust the quality of failure caused by improper
Position if the pressure is too high or too low roll, so with Corrugated paper Board surface too tight or too loose, there will be dirty version, paste version or local Photo Imprinted clear, should adjust the pressure roller to the right place, so that the pressure roller and the roller gap between the fit and the thickness of cardboard to ensure that the print layout of the site, to avoid the failure phenomenon is.
4, color the quality of sequence failures caused by improper
Than if page full color graphics arranged in the first group of printing, when Corrugated Cardboard into the next color printing process group mechanism, the first color group as cardboard printing graphic of dwell volume, dry slowly, very easy to create pages from the Western blot transfer of dirty. In order to prevent the ills generated, the layout should be arranged in a small area of color in the first group of printing, the area of a large group of pages arranged in the follow-up color printing, the transfer can be caused by dirty version to avoid the phenomenon of imprinting.
5, plate thickness caused by uneven quality of fault
When the rubber Plate Uniform thickness, the plate layout height difference occurs. Page where it is easy to paste the high version, low layout places prone to dwell on failure, resulting blot is not clear, in order to avoid this undesirable situation from occurring, sporadic plate can be used the way, will be made of several small plates of ( means that instead of saving the rubber plate plate plate core technology), should be used with a separate plate production, and this difference is relatively small thickness. If you have good rubber version of the system, there is the thickness difference, the local side in the back of many thin plates to make up for viscose fabric layer, so that the plates maintain a consistent thickness, ensuring that the printing pressure and dwell in the uniform layout.
6, the thickness of corrugated board quality caused by uneven fault
Forming corrugated board surface if it was to signs of destruction of depression, the depression part of the paper will also appear unclear quality imprinting defects, which increase the print if the pressure to make up a comprehensive, easy to text, layout lines appear from the quality of paste. To avoid the paste from the page, 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 habits of production handling. Photo printing
page or unstable location allowed the quality of
1, corrugated board printing position due to warping are not allowed
Warping if the corrugated board has bad happens, then locate and cardboard into the paper process, prone to slip and may even reach the machine on the paper side of the rules, resulting in inaccurate position of cardboard or non-printed stability in the warp of corrugated cardboard for printing, try to be relatively flat edges, as a rule of feeding when the positioning edges. The most important source of quality control, through the single machine operation and reasonable process control, the machine speed and preheat temperature, moisture content and preheat area of base paper in a relatively coherent state; in the paper with attention to moisture content when compared close to matching corrugated cardboard and mounted synthetic, so out of corrugated cardboard production, relatively good smoothness, can effectively guarantee the accuracy of the printing location.
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 the defective warping corrugated plate roller just entering the time, if any trace of the slip, the board's care tip deflection location will appear obvious, so there is chromatic corrugated board layout, should be towards the roll off position paper feeding position, and accordingly determine the appropriate measures to repair, remove parts of loosening after the printing position to ensure the accuracy of corrugated board.
3, caused by bad positioning of the machine allowed
When the machine chain, rules and other components are loose phenomenon, are likely to cause the printing layout position are not allowed, this should take appropriate measures to repair, remove parts of loosening after the corrugated board printing can ensure the location of accurate.
These often appear in the print quality problems, some caused because of poor equipment, while others are caused because of improper operation, so we should conscientiously do a good job in peacetime maintenance of equipment, but also demanding the right operational procedures can effectively prevent or reduce poor quality problems, the production efficiency and product quality simultaneously improved.
I am an expert from China Computer Parts, usually analyzes all kind of industries situation, such as transmission jacks , valeo clutch.
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