In the production process of corrugated paper, some production problems are sometimes encountered. If it cannot be solved in time, the entire production process of the corrugated board production line will be forced to stop, affecting the shipment of cardboard. Today, ROYAL, a corrugated board production line manufacturer, will take you to the solution to the corrugated board problem. The following information is for your reference.

1. Common Problems of Corrugated Board Production Line

Next, ROYAL will introduce the common faults and troubleshooting methods in the corrugated board production line in detail:

1.1 The height of the corrugated is not enough

The reason may be that the pressure or temperature of the corrugated board production line is too low, or the moisture content of the paper is too high. The solution is to adjust the pressure or roll temperature of the corrugated board production line or reduce the speed to dry the paper.

1.2 Corrugated height is not uniform

The extruded corrugated paper is fan-shaped with different lengths on both sides. This is due to the poor parallelism of the corrugating rollers or uneven pressure at both ends of the corrugated board production line. If the corrugated paper on the left is shorter than the right, the corrugating roller on the corrugated board production line should be properly raised to the left, otherwise, it should be adjusted in reverse.

1.3 Corrugated paper is rolled into a tube

The main reason is that the temperature difference between the upper and lower rollers is too large. The working conditions of the heating sources in the upper and lower rollers should be checked. Perhaps one of them is faulty and can be repaired or replaced.

1.4 The corrugated paper sticks to the corrugated roller surface of the corrugated board production line

This phenomenon occurs when the roller surface temperature of the corrugated board production line is too high or the moisture content of the base paper is too large. At this time, the roller surface temperature of the corrugated cardboard production line should be adjusted to make the paper dry before corrugating. If the corrugated cardboard production line scraper does not fit the roller groove, it should be adjusted or replaced.

2. Corrugated roller maintenance and maintenance methods

2.1 Before using the corrugated board production line, check the parallelism and tightening of the corrugated rollers and adjust the matching pressure between the rollers.

2.2 When using, pay attention to fully lubricating the corrugated rollers of the corrugated board production line. Spraying a small amount of oil mist or anti-friction agent on the surface of the corrugated roll during production will reduce the wear between the corrugating rolls in the corrugated board production line, and also prevent the occurrence of corrugated paper breakage and blistering.

2.3 After the corrugated board production line is used, the matching pressure should be removed and the roller surface of the corrugated board production line should be cleaned. Do not wash the high-temperature roller surface with water, otherwise, it will deform the roller and accelerate its wear.

2.4 Regularly maintain the corrugated board production line.

Corrugated rollers can normally produce about 20 million meters of corrugated cardboard. If the corrugated cardboard production line produces 50,000 meters of corrugated cardboard per day, it will be ground and repaired after about one year. Decreasing by 1.0mm, the coefficient of corrugation increases, and the amount of base paper and adhesive also increases.

3. Problems that should be paid attention to when printing corrugated boxes in the corrugated board production line

3.1 Avoid full-page printing of corrugated boxes. When printing graphics and texts all over the board, in addition to the pressing effect of the embossing roller on the corrugated cardboard production line, the ink also has a wetting effect on the paper surface, which will make the corrugated cardboard box resistant to compression. Intensity decreases.

Therefore, the simpler the printing of graphics and texts on corrugated boxes, the better, and avoid printing graphics and texts all over the entire box surface as much as possible, let alone printing full color.

3.2 Avoid printing with decoration in strips (the same mechanical direction as a corrugated board). Due to the lack of printing process knowledge, the designer of the corrugated board production line has some horizontal gradient lines in the designed carton printing pattern. When the corrugated board production line is printing, the printing pressure will crush the corrugated. This area of the carton will have stress concentrations and will be most prone to breakage.

3.3 The color of the ink should be eye-catching. Since the color of the corrugated cardboard itself is quite dark, the color of the corrugated cardboard production line must be considered when choosing the printing color. Hope the color will vary greatly.

3.4 Minimize the number of overprints in the corrugated board production line The more overprints, the more serious the drop in the compressive strength of the corrugated box.

3.5 Avoid printing small characters as corrugated boxes. Considering the effect of promoting the product, the size of the font should be determined. Text with a size of less than 2cm is generally almost indiscernible at a distance of more than 5m, thus losing the meaning of promoting and selling products.

3.6 Minimize the printing pressure In order to ensure the printing quality of the carton and reduce the impact on the strength of the corrugated cardboard box, the printing pressure of the corrugated cardboard production line should be as small as possible, and the ink used should be as fast-drying ink as possible. Secondly, the distance between the printing surface of the corrugated board production line and the horizontal indentation line should be kept more than 15mm, because the part of the corrugated board that is pressed down by the creasing machine of the laminating machine cannot fully accept the ink, otherwise, the printing effect will be affected.

The above are the common problems and maintenance of the corrugated board production line brought to you by ROYAL, a corrugated board production line manufacturer. I hope the above content can help you make better use of the corrugated board production line. More information about the corrugated board production line can be found below;

12 important operation indicators of corrugated board production line

How to reduce the scrap rate of corrugated board production line?