How to Correctly Use The Corrugating Roll ?

Correct Use and Maintenance of Corrugating Rolls

Corrugating rolls are crucial components in the production process of corrugated cardboard boxes. The function of the corrugating roll is to process the corrugated core paper into the desired corrugated shape, and fix the core paper to complete the gluing and laminating operations. In order to improve wear resistance and reduce wear, the roller surface must be both sturdy and durable. Sturdy but not durable can cause mechanical damage (breakage or peeling) to the surface of the roll. This type of damage will accelerate the wear of the rolls. In the daily use of corrugating roll, the service life of corrugating roll can be extended through some simple methods:

Polish

Due to the wear and tear of corrugating rolls, ladder like patterns appear on the roll surface. The wear in the middle of the roll is the greatest, especially on the roll surface where the paper edge passes through. This will result in uneven pressure on the pressure roll clamp and make it difficult to apply glue evenly and uniformly. When this wear affects the quality of the cardboard, even if the thickness is still within an acceptable range, the rolls need to be replaced. To overcome this, diamond grinding paste can be used to grind or a small amount of material (0.05mm) can be removed from the edge of the shaft neck. This operation is very difficult and requires high skills to avoid grinding off important coatings on the ridges. Like many maintenance methods, there is no need to maintain rolls with severe wear when using this method. Some factories produce small fixtures that can be installed on single facer, making grinding work more accurate and easy. By carefully polishing the uncoated roller, its service life can be significantly extended.

Regularly Adjust

The pressure of the corrugating roll can be adjusted by changing the grade of the paper frame or core paper (the pressure should be appropriately reduced to prevent metal to metal contact at the journal). Making the correct adjustments when needed can reduce damage to the journal and extend the lifespan of the rolls. More importantly, ensure that each roll is placed parallel in the machine. This can be detected by an electric newspaper. When the electric newspaper is placed on the roller, it can display the relative position of the upper and lower pressure rollers. This type of electric newspaper can also be used when the roller is first installed. To ensure the service life of the rollers, they must be placed in parallel. In future inspections, any displacement indicates a potential problem with the machine.

Regular Cleaning

The presence of metal particles larger than 0.5mm can cause damage to the rollers. The rollers and single facer   should be kept sufficiently clean to prevent unnecessary large particles and impurities from passing between the rollers.