New methods and techniques for improving the paper feeding performance of web paper

Jun 24, 2025

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The global competition in the paper manufacturing industry is becoming increasingly intense and multifaceted. To thrive in such a challenging environment, enterprises must focus on enhancing quality, minimizing waste, and increasing productivity to optimize their operational efficiency. Below is an overview of some innovative methods and technologies that can significantly improve paper feeding performance. Currently, many enterprises invest substantial resources into fiber storage and conservation, including the use of lighter materials, higher ash content paper, and extensive recycling of fibers. While these practices conserve materials, they often compromise the paper feeding properties of roll paper, thereby affecting the quality of the final product. Additionally, manufacturers must increase machine operating speeds to maintain normal production processes. However, this can lead to issues such as inadequate dryer performance due to the close proximity between the machine and the paper. To address these challenges, advanced rollers and precise pressure control systems are required. In recent years, innovations such as consistency pressing have been developed, leading to cross-directional paper basis weight control. By adjusting consistency, blade uniformity in the cross-directional machine can be maintained. Misalignment between the blade edge and the baffle may cause uncoordinated fiber orientation and affect both pressing and cutting efficiency. One significant advantage of thick pressing is its ability to ensure print quality at high machine operating speeds. Consistency molding reduces the time required for cold starts, gear changes, and shutdowns compared to other techniques. The implementation of these technologies has resulted in substantial cost savings and improved product quality. ENP technology represents a breakthrough in web paper feeding performance, initially applied in linear cardboard and corrugated paper production. This technology enhances paper dryness, making it a standard in the cardboard industry with operating speeds reaching up to 1500KN/M. Extensive experiments demonstrate that under ENP conditions, cardboard dryness levels can reach six points. Pulp characteristics, including consistency, free flow, average fiber length, fiber length distribution, crimping degree, and roughness, are critical factors influencing paper feeding performance. Modern fully automatic systems monitor these parameters, along with brightness, color, and luminosity. Devices like RRS MICROPOS control impression line pressure, ensuring product hardness and quality. Digital systems capable of rapidly identifying paper breakage locations and causes are widely adopted in paper mills. Minolta's CM-3630 spectrophotometer provides real-time detection of color, luminance, and fluorescence. ABB's innovations include three types of die-cutting tool machines: dilution, weight, and blade-based, which enhance quality by detecting changes in paper and coating basis weights. NDC's detection system monitors paper machine dryness and humidity, maximizing productivity. Advanced monitoring tools provide early warnings for potential quality issues, maintaining high-speed machine operation and optimizing paper feeding performance.