Puzzle books printing frequently asked questions

Puzzle books printing https://www.thpkgg.com/Puzzle-books.html

Puzzle books printing in addition to packaging goods, easy to transport, but also to beautify goods, promote the role of goods. Therefore, the quality of the Puzzle books printing is very important. So, what are the common quality problems and solutions of Puzzle books printing?

First, the machine stamping associated parts are bad

Problem: When the plate roller shaft head, embossing roller head, transmission shaft, gear and the important parts associated with embossing are worn and loosened, the plate roller or embossing roller will skip or slide during the embossing process, and the contact between the printing plate and the cardboard is abnormal due to the unstable pressure, resulting in the problem of paste plate or local image imprinting on the printed surface of the cardboard.

Methods: Through careful observation and analysis, find out the exact part of the fault, take corresponding measures to deal with it, repair the worn and loose parts, and eliminate the fault phenomenon.

2. Improper adjustment of pressure roller

Problem: The position of the pressure roller is too high or too low, so that the contact with the corrugated cardboard is too tight or too loose, there will be dirty plate, paste plate or local graphic imprinting is unclear.

Method: Adjust the pressure roller to the appropriate position, so that the gap between the pressure roller and the roller is compatible with the thickness of the cardboard, so as to ensure the position of the printing plate and avoid the occurrence of the fault phenomenon.

Third, the inking roller is poor

Problem: When the inking roller head is loose, the inking roller body is bent, deformed or the surface is damaged, it will also cause the layout to be dirty, pasted or local graphics are not clear.

Methods: The reason should be found out and the corresponding measures should be taken to deal with it, so that the contact conditions between the inking roll and the printing plate should be uniform and suitable, and the damaged inking roll should be replaced to eliminate the fault phenomenon.

Fourth, the thickness of corrugated cardboard is not uniform

Problem: When the surface of the formed corrugated cardboard is damaged by someone, the paper surface of the concave part will also appear the quality defect of unclear imprint. If the printing pressure is fully increased to compensate, it is easy to make the quality of the text and line layout paste.

Methods: In order to avoid the layout paste, corrugated cardboard in the stacking, handling process, should pay attention to light, light, light pressure (to control the stacking height), do not use throwing, smashing, pressing and other bad production habits for handling.

Five, the plate thickness is not uniform

Problem: When the thickness of the rubber plate is not uniform, the printing plate layout will appear high and low. The high place of the layout is easy to paste the version, and the low place of the layout is easy to appear incomplete, resulting in unclear marks.

Methods: The plate can be made into several small pieces by piecemeal plate making, and the same plate should be made separately, so that its thickness difference is relatively small. If the rubber plate has been made, when there is a thickness difference, it can be made up by more adhesive fabric layer on the back of the locally thin plate, so that the entire plate remains basically the same thickness, ensuring the uniform printing pressure and layout inking.

Six, improper color order

Problem: If the graphic layout is more full in the first color group printing, when the corrugated cardboard into the next color group printing process, due to the printing of the first color group of cardboard printing graphic ink amount is large, drying speed is slow, easy to make the blot transfer, resulting in dirty layout.

Methods: The small pages were arranged in the first color group printing, and the large pages were arranged in the subsequent color group printing, which could avoid the phenomenon of dirty plates caused by the transfer of imprinting.

Puzzle books printing https://www.thpkgg.com/Puzzle-books.html