What kind of folding roller is best

The folding roller is the most important part of the folder. Whether it is a fence-type folding machine, a blade folding machine or a hybrid folding machine, the folding roller is an indispensable core. There are a variety of folding rollers on the market today, but which one is best? Which one can provide higher quality services for more types of printed materials?

For the modern binding industry, the key factor in determining the suitability of a folding roller is grip. Coated paper, glossy paper, peritoneal paper, and heavy ink on paper all present challenges for folding quality. If the folding roller does not have enough grip, it is difficult to accurately control the smooth paper and ultra-light tissue.

Other important factors worth considering include the durability of the folding roller, repair and reloading costs, and whether it may leave unpleasant traces on the folded product.

Folding roller type:

Steel - Steel folding rollers are rugged and inexpensive but are not practical in many situations today. Folding rollers can not control the surface of steel because of the lack of grip, can not control coated paper and other kinds of smooth paper.

Indentation is a common problem. There is a need to control the paper, and the pressure between the folding rollers increases, it is easy to leave uneven marks on the roller on the paper surface. Therefore, steel folding rollers generally require longer set-up times, slower running speeds, poorer folding quality, and greater waste.

Rubber rollers, or polyurethane folding rollers, have better grip than steel folding rollers but are less durable. All rubber rollers have a short working life. With the wear of the folding rollers, the holding force becomes weaker and weaker. In order to control the paper, you need to increase the pressure, and the greater the pressure, the faster the machine wears. As a result, it takes a lot of time and costs due to equipment updates and breakdowns and deactivation.

Mixed type - or combination of folding rollers, alternating steel roller and rubber roller. The width of each section varies from design to design. Some folding rollers have 30% rubber on the surface area, and some are 40% or 50% rubber.

The combined folding roller combines the advantages of a steel roller and a rubber roller, and has a good grip and durability. But at the same time it also combines the shortcomings of both. When the rubber part begins to wear, the grip force weakens and the indentation problem also emerges. Updating and reloading the folding rollers is time-consuming and time-consuming.

MBO spiral folding roller - it perfectly combines the advantages of steel folding roller and rubber folding roller, but also avoids the disadvantages of the combined folding roller. Spiral folding roller is a patented product exclusively designed and produced by MBO. 70% of the surface of the rubber provides a good grip, suitable for all types of paper, including thin paper and glossy coated paper like Bible paper. The steel thread lengthens the service life of the folding rollers and also avoids indentations. The greater grip means that there is no need to apply too much pressure, which means less wear, less wrinkles and less static electricity.

The exceptional grip of the MBO spiral-folding roller greatly reduces the time required for determination, improves the running speed and folding quality, and also minimizes waste – in one word, increased productivity.

Q: Does the spiral pattern not move the paper to both sides?

Answer: No. The spiral direction of alternate folding rollers is reversed, which makes it impossible to move the paper sideways. In fact, the folding roller rotates like a cylinder. You look at it as if it is moving, it is actually a visual effect caused by the spiral pattern. When the paper passes through the folding unit, you can find a reference next to it and carefully observe the change in position to see that it does not actually move.

Q: Can the ink cleaning problem be solved?

A: If the ink does not dry during folding, the ink may be covered with any rubber-surfaced folding roller. This problem exists for all-rubber folding and combination folding rollers, and the MBO spiral folding roller is no exception. Some combined folding rollers may advertise that they can “self-clean”, but when the thickness of the paper passing through them separates the folding rollers from the gap, the ink is inevitably stained and cannot be cleaned by itself. Other drums containing rubber components need to clean the oil.

If it is necessary to fold the page when the ink is not dry, the drum wall can be cleaned regularly with a rag and solvent. This procedure is very simple and will only produce a brief pause in the production process.
Q: Does the rubber helix often need to be replaced?

A: The MBO patented spiral folding roller does not require replacement of rubber material. When the wear is severe, the drum can be easily disassembled and polished. The re-sanding of the drum is to grind the outer wall of the drum from beginning to end, so that it becomes the same as the new one. Since the steel thread surface is also flat, its grinding will not affect the performance of the rubber part. The rubber material is not covered in a thin layer on the surface, but is embedded in the drum, has a certain thickness, and can be reground.

The original MBO belt drive system – no need to go from the bottom of the gear system, allowing multiple re-grinding. According to the normal wear rate, if the grinding is carried out for five years, the folding roller can have the same service life as the entire machine. According to the average mechanical grinding cost, MBO threaded folding roller is not only the best quality, but also the most economical folding roller.

MBO spiral folding roller

70% polyurethane surface, excellent grip The most suitable for smooth paper folding roller Thin and thin paper Accurate control without leaving wrinkles Minimal electrostatic interference Patented spiral design, no less indentation, minimum maintenance cost