Roll paper improvement method

Paper manufacturing has become increasingly fierce and complicated in worldwide competition. To survive in this complex environment, companies must make painstaking efforts to improve quality, reduce waste, increase production, and make the company's production operations more efficient. The following is a brief introduction of some new methods and technologies that can improve the paper-feedability.

The current situation is that many companies spend a lot of energy on storing and saving fiber, including the use of lighter materials, the use of paper with higher ash content, and the extensive use of recycled fiber. Although this saves material, it affects the paper-feeding properties of the web, which in turn reduces the quality of the paper produced. At the same time, papermakers must speed up the operation of the machine in order to maintain the normal state of the paper during the production process. There is no gap between the machine and the paper to produce such paper, which makes the dryer unable to work properly. To handle such high-sensitivity paperboards, better rollers are needed and precise pressure control of the paper is required.

In recent years, an innovative design has been invented through the use of consistency press molding, which is a type of cross-sheet paper press. By controlling the amount of paper by changing the consistency, the blade can maintain consistency in the cross machine. When the knife edge and the baffle are parallel, the jet speed will change, leading to inconsistent fiber orientation. Both the profile and the knife edge must pass through the machine transverse incision, and the weight control does not depend on the control of the fiber angle. A major advantage of the consistency press is that the speed of the paper machine guarantees the quality of the print. Consistency molding allows the machine to start cold, change gears, and shut down the machine in less time than other technologies. The final result of using this technology is that it saves a lot of costs and the quality of the product is greatly improved.

ENP technology is a major technological breakthrough in terms of web transferability. This technology was first used for the production of linear cardboard and corrugated paper. The increased extrusion force of this technique increases the dryness of the paper. For this reason, it has become a technical standard for the cardboard industry. Some ENP technologies can operate at speeds up to 1500KN/M. ENP technology is now used extensively in the identification of paper grades. A large number of experiments have shown that the board dryness can reach 6 points under ENP technology. Because of these advantages, ENP technology is a powerful auxiliary tool in the production of fine paperboard and other processes.

Pulp is also a very important factor in ensuring paper transportability. Now, fully automated systems have begun to use for the detection of pulp consistency, freeness, average fiber length, fiber length distribution, curl and roughness. In addition, it also detects brightness, color, and brightness.

RRSMICROPOS is a state-of-the-art device for controlling the pressure of nip lines. This kind of control equipment can monitor the hardness and the pressure of the product, which maximizes the quality of the product. Because it can quickly determine the location and cause of paper breakage, this digital system is now being used in large quantities in paper mills, which can solve the problem of paper breakage to the maximum.

Minolta has now introduced a CM-3630 spectrophotometer that detects color, brightness, and fluorescence in real time. ABB has already invented three new tooling machines, one is a diluting power tool, the other is a weighting tooling machine, and the other is a blade punching tool machine. These new tooling machines can quickly detect changes in paper sizing and coating quantification, resulting in improved product quality.

NDC has released a test system that can detect dry humidity for paper machines to maximize product productivity. The latest invention is a new type of monitoring tool that can provide faster, more valuable data and provide early warning of potential quality problems, thus keeping the machine in a fast working state. This type of monitoring tool is mainly used in paper machines, and the use of such tools can maximize the paper runnability.

Reprinted from: Graphic Arts Forum