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Based on the experience of serving tunnel projects around the world, QBF rubber analyzes the common problems of tunnel sidewall conveyor belt as follows: Design Selection Error Design capacitycannot meet the actual demand, resulting in overload and material spillage in vertical section. Size of particles from TBM is not fully considered. The actual size is too large, causing impact damage to the belt. Belt is not able to well accommodatematerials with high water content. Material spills from belt two sides. Poor anti-stick performance leads to serious material carryback and hence limit the belt capacity. Improper Design of Key Parts Small pulley is selected; take-up and bend pulley are not properly arranged. Inappropriatetracking measures are used. Deflection wheels are not designed reasonably. Bad parts qualityand poor machining precision cause poor stability.     The design selection of the tunneling sidewall conveyor belt should be based on material characteristics, conveying requirements, environmental conditions and safety requirements and comprehensively consider the factors such as sidewall height, cleat design, rubber compound properties, belt width and speed. Only through scientific selection and reasonable design can the sidewall belt be ensured to operate efficiently, safely and stably in tunnel projects.     QBF Rubber provides the following solutions for sidewall conveyor belt design based on the characteristics of tunnel construction and different muck properties. ①The base belt adopts steel cord free zone design to protect cross rigidity. ②Anti-stick rubber compound is used to effectively reduce material carryback. ③The belt is configured with side blinkers to accommodate materials with high water content. ④Cleats are reinforced to resist to impact caused by large-sized material. TCS cleats are also available which enables quick replacement of damaged cleat blade. ⑤Hot vulcanized spicing delivers higher strength and longer service life.   QBF rubber has been focusing on European standard long-life sidewall conveyor belt to provide the fit-for-purpose solutions for tunnel projects. The market share of QBF rubber sidewall conveyor belt in tunnel project in China reaches 70% to support customer’s efficient construction.  

In the key link of deep mine mining and vertical material transportation, facing the severe challenge of high tension, strong impact and complex working conditions, the reliability of the sidewall conveyor belt of the mine vertical lifting system is put forward to be almost demanding. QBF rubber is deeply rooted in its relentless pursuit of “R&D capabilities” and “process control,” establishing a comprehensive support system covering on-site installation and professional maintenance. It has become the preferred partner for numerous large-scale mining enterprises both domestically and internationally. Currently, QBF rubber holds two industry records in the mining sector: the longest single one sidewall conveyor belt (930m – Mexico Silver Mine Project) and the highest vertical lift for a sidewall conveyor belt (255m – China Gold Mine Project).   R&D-Driven: Redefining Industry Standards Through Material and Structural Innovation QBF rubber collaborates with multiple universities and research institutes, focusing on tackling key technological challenges in the vertical lifting field, including high lifting heights, large capacities, new materials, and innovative structures.   Precision Craftsmanship: Forging European-standard reliability through smart manufacturing and rigorous quality control. QBF rubber operates the world’s largest single-site production base for sidewall conveyor belts. The company handles all processes in-house—from mixing and calendering to molding, base belt production, semi-finished goods, and finished goods vulcanization. Vulcanization processes are digitally controlled, with full traceability throughout quality inspection, prioritizing both quality and longevity.   Service Empowerment: Professional Installation and Proactive Maintenance to Support the Full Lifecycle The “Vertical Lift Special Service Team”, composed of senior engineers, provides customized installation solutions for each project. The “Mine Partner Program” is launched to establish exclusive equipment profiles for clients. While offering customised, differentiated products such as heat-resistant conveyor belts, flame-retardant conveyor belts and patterned conveyor belts, we also provide comprehensive support capabilities encompassing pre-project selection assistance, installation services and after-sales support.   From the laboratory to the production line, from manufacturing to application sites, QBF rubber has established a comprehensive value system centered on technological leadership and grounded in reliable delivery. Choosing QBF rubber sidewall conveyor belts means not only selecting a high-performance product, but also embracing a steadfast commitment to mine safety and comprehensive assurance throughout the entire process.  

When a demanding Japanese power plant chooses QBF rubber, it is no coincidence. Recently, QBF rubber began production on a custom-engineered large-inclination corrugated sidewall conveyor belt for a major thermal power plant in Japan. This order is more than a product delivery — it is a testament to QBF rubber’s EU-standard manufacturing, stringent quality control, and technical expertise. From enabling OEM replacement in Chinese power plants to serving the Japanese power market, QBF rubber is demonstrating the global competitiveness of China’s sidewall conveyor belt industry. From Order to Production: Steady Progress on QBF rubber Sidewall Belts After receiving the purchase order from a Japanese power plant, QBF rubber completed technical discussions, sample testing, and design validation. The customized sidewall conveyor belts are now in production at QBF rubber’s facility and will be delivered and installed in Japan shortly.   Why Did This Japanese Power Plant Choose QBF rubber? Japanese customers are known for their strict requirements for industrial products. Among numerous sidewall belt suppliers, why did this Japanese power plant ultimately select QBF rubber? The answer can be summarized in five key points: 1. EU-Standard Production with Rigorous Technical Requirements Since its founding, QBF rubber has aligned its production with European standards. From rubber compounding to final product inspection, every process follows EU technical specifications. The Japanese power plant gave high praise to QBF rubber’s EU-standard system during the initial factory audit. 2. European Manufacturing Processes — Mature and Leading Technology The core technology of QBF rubber sidewall belts originates from Europe. Through years of adaptation and optimization, QBF rubber has developed a mature, stable, and repeatable process system. Key steps such as corrugated sidewall forming and diaphragm hot vulcanization have reached industry-leading levels. 3. Fully In-House Production from Mixing to Vulcanization — Strict Quality Control QBF rubber has a complete in-house production chain for sidewall belts: mixing → calendering → semi-finished goods → vulcanizing, with no outsourcing. Every step is controlled under the same quality system, ensuring product consistency and full traceability. 4. China’s First Manufacturer to Achieve OEM Replacement of Sidewall Belts in Power Plants QBF rubber was one of the first companies in China to realize OEM replacement of sidewall conveyor belts in power plants. Previously, high-end sidewall belts for large domestic power plants relied heavily on imports. QBF rubber’s success broke the monopoly of foreign brands and laid a solid foundation for expanding into international markets, including Japan. 5. Leading Global Market Share and Participation in Major Projects Worldwide QBF rubber sidewall conveyor belts are widely used across multiple industries in numerous countries and regions worldwide, including power generation, ports, metallurgy, mining, and tunnels. The company’s market share consistently ranks among the top in the industry. From Europe and the Americas to Southeast Asia, and from the Middle East to Africa, and now to this Japanese power plant, QBF rubber is demonstrating through proven performance that China-made sidewall belts have the capability to serve high-end customers globally.   Production Status: Strict Control & Real-Time Inspection The order for the Japanese power plant is currently being produced in an orderly manner. QBF rubber strictly follows EU-standard processes. From mixing and calendering to vulcanizing, every step is monitored in real time by quality inspectors, ensuring stable and controllable product quality.   From EU standards and European processes to fully in-house production, being a pioneer in OEM replacement for power plants, and earning global market recognition — QBF rubber has won the trust of a Japanese power plant through five core strengths. And this is just the beginning of a new chapter.

Recently, QBF rubber sidewall conveyor belt achieved a new breakthrough. Our custom-made oversized sidewall conveyor belt for a major port project in Indonesia have successfully completed all production and inspection processes. With a belt width of 2200mm, a sidewall height of 500mm, and a designed conveying capacity of 2500TPH, this achievement not only go beyond the previous record of 2350 TPH created by QBF rubber but also marks another major technological leap forward for us in port bulk material conveying solutions with large capacity and high strength. The sidewall conveyor belting is specifically designed to handle the demanding, continuous bulk cargo handling operations of ports, such as coal and ore. Its exceptionally high conveying efficiency will significantly enhance port logistics throughput, meeting customers’ urgent need to reduce costs and increase efficiency. At the shipping site, we require personnel to conduct thorough final pre-loading inspections and securement operations, ensuring precision and stability at every stage.