Incorrect marks and inaccurate positions in Flat Cigar Paper Boxes are analyzed

Incorrect marks and inaccurate positions in Flat Cigar Paper Boxes are analyzed

Most of the Flat Cigar Paper Boxes carton manufacturers have set printing, slitting, creasing production function in the integration of printing and die cutting machine, equipment, simple and convenient operation, a relatively high degree of automation, easy to control the quality, play a certain role in carton production process, but if the equipment aging, machine use improper adjustment, Printing is prone to some fault phenomenon, now the production process encountered in the common printing problems classification analysis.

Layout text and text appear dirty, paste version or partial text and text imprinted unclear quality problems

Quality failure caused by poor associated parts of machine embossing

When plate roller shaft head, embossing roller, shaft, gear, and that is associated with stamping of the important parts in wear, loosing, plate roll in the process of stamping or embossing roller can produce beats or sliding phenomena, so because of the pressure is not stable, the printed page contact with cardboard, cardboard printing surface caused by paste version or local graphic imprinting is not clear. Through careful observation and analysis, find out the exact part of the fault, take corresponding measures to deal with, repair the worn and loose parts, and eliminate the fault phenomenon.

Quality failure caused by poor inking roller

When the inking roller shaft head is loose, the inking roller body is bent, deformed or damaged, it will also cause the layout dirty, paste version or local text and text is not clear. Should find out the reason, take corresponding measures to deal with, so that the ink roller and printing plate to maintain uniform and appropriate contact conditions, the damaged ink roller to replace, in order to eliminate the fault phenomenon.

Quality failure caused by improper adjustment of pressure roll

If the location of the pressure roller too high or too low, so that contact with corrugated board too tight or too loose, also can appear dirty version, paste version or local graphic imprinting is not clear, should be adjusted pressure roller to the right position, make the pressure between the roller and the roller gap and the thickness of the cardboard, to ensure that the print surface parts, to avoid the failure phenomenon.

Quality failure caused by improper color sequence

If the pictures and texts with full layout are arranged in the first color group printing, when the corrugated board enters the printing process of the next color group, due to the large amount of ink and slow drying speed of the printed pictures and texts of the first color group of cardboard, it is very easy to make the printing transfer and cause the layout to get dirty. In order to prevent the occurrence of this disadvantage, it is advisable to arrange the small layout in the first color group printing, and the large layout in the subsequent color group printing, so as to avoid the dirty printing phenomenon caused by blot transfer.

Printing plate thickness caused by uneven quality failure

When the rubber plate thickness is not uniform, printing plate layout will appear high and low. Layout high place would be easy to paste version, layout of low place is prone to lis is not complete, causing imprinting is not clear, to avoid the bad situation, can adopt the way of sporadic plate making, will be made into several small pieces of plate (refers to that to save the rubber plate and no plate making core plate-making technology), should use the same piece of plate making, so that its thickness difference is small. If the rubber plate has been made, there is a difference in thickness, can be made up in the local thin plate on the back of the adhesive layer, so that the entire plate to maintain the same thickness, to ensure that the printing pressure and page inking uniform.

Quality fault caused by uneven thickness of corrugated board

If the surface of corrugated cardboard is damaged by the depression trace, the depression part of the paper surface will also appear imprinted unclear quality defects, if the comprehensive increase of printing pressure to make up for this, it is easy to make the text, line layout paste quality problems. In order to avoid the layout of the paste, corrugated cardboard in the process of stacking, handling, should pay attention to light moving, light, light pressure (to control the height of stacking), do not use throwing, smashing, pressure and other bad production habits for handling.

Layout text and text printing position is not accurate or unstable quality problems

Corrugated board warping caused by inaccurate printing position

If corrugated board have bend bad happens, so in the process of cardboard positioning and feed, prone to the phenomenon of sliding, the custom of the contact less than even the machine, printing position is allowed to board or unstable on buckling of corrugated board printing, as far as possible will be relatively flat, as feed positioning to the custom of the paper. The most important is the quality of the source control, through the reasonable control of the single-side machine operation process, so that the speed of the machine and preheating temperature, moisture content of base paper and preheating area in a relatively coordinated state; When arranging paper, pay attention to mounting and forming the box board paper and corrugated paper with similar moisture content. The corrugated paper produced in this way has relatively good flatness, which can effectively ensure the accuracy of the printing position.

Inaccurate printing position caused by improper operation process

If the loading position is inappropriate, it is easy to cause the layout printing position is inaccurate. Because of bend defects of corrugated board first in the plate roller, if there is any trace of slippage phenomenon, board of tip region will appear obvious deviation, so the corrugated board has tinted layout, should as far as possible toward the roller feed location and start position, and according to the corresponding measures to repair, eliminate the phenomenon of loose parts, to ensure accuracy of corrugated cardboard printing position.

Inaccurate positioning caused by faulty machinery

When the chain, rules and other parts of the machine are loose, it is easy to cause inaccurate layout printing position. Corresponding measures should be taken to repair this phenomenon, and eliminate the loosening phenomenon of parts, so as to ensure the accurate printing position of corrugated board.

The quality problem often appeared in print, because some equipment caused by the poor, and some because of improper operation, so at ordinary times should earnestly equipment maintenance, and strict with the correct operating procedures, to prevent or reduce the emergence of the problem of poor quality, make the production efficiency and product quality are improved synchronization.