Common quality solutions for carton packaging box printing
Carton Box is the outer packaging of some goods, which has a great attraction to consumers. The printing quality of the Carton Packaging Box can not be ignored. This site introduces some common problems and solutions for Carton Printing Packaging.
1. Quality failure caused by bad parts associated with machine imprinting
When the plate roller head, the plate roller head, the drive shaft, the gears, and the important parts associated with the embossing are worn and loose, the plate or embossing roller may bounce during the embossing process. The sliding phenomenon, due to the unstable pressure, causes the printing plate to be in abnormal contact with the paperboard, which causes a problem that the printing surface of the cardboard has a paste or a partial graphic imprint is unclear. Through careful and careful observation and analysis, the exact location of the fault is identified, and corresponding measures are taken to repair the worn and loose parts to eliminate the fault phenomenon.
2. Quality failure caused by improper adjustment of pressure roller
If the position of the pressure roller is too high or too low, so that the contact with the corrugated board is too tight or too loose, the dirty plate, paste or partial graphic imprint may be unclear. The pressure roller should be adjusted to the proper position to make the pressure The gap between the roller and the roller is adapted to the thickness of the cardboard to ensure the location of the printing plate and to avoid this malfunction.
3. Quality failure caused by poor ink roller
When the inking roller shaft head is loose, when the inking roller body is bent, deformed or damaged, it may cause the interface to be dirty, paste or partial graphics to be unclear. The cause should be ascertained, and corresponding measures should be taken to maintain uniform and appropriate contact conditions between the inking roller and the printing plate, and the damaged inking roller should be replaced to eliminate the malfunction.
4. Quality failure caused by uneven thickness of corrugated cardboard
If there is a ruined mark on the surface of the formed corrugated board, the paper surface of the recessed part may also have unclear quality defects. If the printing pressure is fully compensated, it is easy to make the text and line layout appear to be creased. Quality issues. In order to avoid the crease of the layout, corrugated cardboard should be handled lightly, gently, and gently during stacking and handling. (To control the stacking height), avoid using poor production habits such as throwing, smashing and pressing.
5. Quality failure caused by uneven thickness of the printing plate
When the thickness of the rubber plate is not uniform, the plate layout will have a height difference. Where the layout is high, it is easy to paste, and the place with low layout is prone to incomplete ink, which makes the imprint unclear. In order to avoid this bad situation, the plate can be made into small pieces by means of sporadic plate making. It should be made separately from the same plate, so that its thickness difference is relatively small. If the rubber plate that has been prepared has a thickness difference, it can be compensated for by a multi-adhesive tape layer on the back of the partially thinner printing plate, so that the entire printing plate maintains a substantially uniform thickness, ensuring uniform printing pressure and layout ink.
6. Quality failure caused by improper color sequence
If the full-page graphic is arranged in the first color group printing, when the corrugated cardboard enters the printing process of the next color group mechanism, it is extremely easy because the printing image of the first color group of the cardboard has a large amount of ink and a slow drying speed. Transfer the blot to make the layout dirty. In order to prevent the occurrence of this drawback, it is preferable to arrange the layout of the small area in the first color group, and arrange the layout of the large area in the subsequent color group printing to avoid the dirty version caused by the transfer of the print.