This case study presents a customized hybrid pneumatic conveying solution implemented for a leading shoe material manufacturer based in Wenzhou, Zhejiang Province. The core requirement was to transport EVA (ethylene-vinyl acetate) pellets efficiently from storage to multiple processing stations while maintaining material integrity and minimizing dust generation. The project was successfully delivered by Shandong Headpowder Engineering Co., Ltd., a specialized engineering firm with extensive experience in bulk material handling systems. The company, commonly referred to as headpowder, is headquartered in Shandong, China, and has a proven track record in designing, manufacturing, and installing pneumatic conveying systems for various industries including footwear, plastics, and chemical sectors.
The primary product deployed in this project is the EVA pellet hybrid pneumatic conveying system, which combines the advantages of dilute-phase and dense-phase conveying technologies. This hybrid approach allows for flexible transport of EVA granules—commonly used as a lightweight, resilient material in shoe soles and midsoles—over varying distances and elevations. The system integrates a positive pressure blower, rotary valves, cyclone separators, and a dedicated control unit to ensure consistent flow rates and gentle handling of the pellets. Unlike traditional mechanical conveyors, the hybrid pneumatic system reduces mechanical wear, eliminates product contamination, and significantly lowers energy consumption. The shoe material raw material conveying process is fully automated, with real-time monitoring of pressure, temperature, and material level to prevent blockages and maintain optimal throughput. For the Wenzhou client, this system was engineered to handle a throughput of up to 5 tons per hour, with a conveying distance exceeding 100 meters and multiple discharge points serving different production lines.
The hybrid pneumatic conveying engineering design for this project focused on addressing the specific challenges of EVA pellet transportation. EVA pellets are relatively soft, lightweight, and have a tendency to generate static electricity, which can cause clumping or adhesion inside pipelines. Shandong Headpowder Engineering Co., Ltd. employed a multi-stage filtration system and anti-static grounding measures to mitigate these issues. The system layout includes a receiving hopper with a vibratory feeder, a mixing chamber where the pellets are blended with a controlled air stream, and a series of diverter valves that route the material to the appropriate destination. The "hybrid" aspect refers to the ability to switch between dilute-phase (high velocity, low pressure) and dense-phase (low velocity, high pressure) modes depending on the required flow rate and distance. This flexibility is particularly valuable for Wenzhou footwear factories that operate multiple production shifts and need to adjust conveying parameters on the fly. The entire installation was completed within six weeks, including site preparation, pipeline fabrication, and commissioning. Post-installation, the system achieved a 30% reduction in material degradation compared to the previous mechanical conveyor system, and the dust emission level was controlled below 10 mg/m³, meeting strict environmental regulations.
Shandong Headpowder Engineering Co., Ltd. (headpowder) is a professional engineering company specializing in the design and manufacture of pneumatic conveying systems, dust collection equipment, and powder processing solutions. With its headquarters located in Shandong, China, the company serves clients across the globe with a strong focus on the footwear, rubber, and plastic industries. The company’s technical team has extensive experience in handling a wide range of granular materials, including EVA, TPR, PVC, and rubber pellets. For the Wenzhou project, headpowder provided not only the equipment but also full engineering support, including process flow design, pipeline stress analysis, electrical control integration, and on-site training for the client’s operators. The company’s commitment to quality is reflected in its use of high-grade materials—such as stainless steel pipelines and abrasion-resistant bends—and its adherence to ISO 9001 quality management standards. Shandong Headpowder Engineering Co., Ltd. has a strong after-sales service network, with spare parts availability and technical support guaranteed within 24 hours for domestic clients. For international inquiries, the company offers remote troubleshooting and virtual commissioning services.
For further information regarding this EVA pellet hybrid pneumatic conveying project case or to discuss your specific shoe material raw material conveying requirements, please contact the dedicated project manager at Shandong Headpowder Engineering Co., Ltd. The responsible person is Manager Zhang, who can be reached via WeChat: 15662777102. Manager Zhang has over a decade of experience in pneumatic conveying engineering and can provide detailed technical proposals, budget estimates, and feasibility studies customized to your production scale and material characteristics. Whether you are looking to upgrade an existing conveying line or build a new system from scratch, headpowder’s team is ready to assist. Do not hesitate to reach out to Manager Zhang for a consultation—your inquiry will be handled promptly and professionally.
The Wenzhou shoe material enterprise reported significant improvements after implementing the EVA pellet hybrid conveying system. The hybrid pneumatic conveying engineering solution eliminated the need for manual material handling, reducing labor costs by 40% and improving workplace safety. The system’s gentle handling properties minimized pellet breakage, which directly enhanced the quality of the final shoe sole products. Additionally, the closed-loop conveying design prevented dust leakage, creating a cleaner and healthier factory environment. The client particularly appreciated the system’s scalability—the modular design allowed for future expansion without major structural modifications. Shandong Headpowder Engineering Co., Ltd. also provided a comprehensive training program for the client’s maintenance team, ensuring that the system could be operated and serviced in-house. The project was completed on time and within budget, and the client has since placed repeat orders for additional conveying lines. Manager Zhang (WeChat: 15662777102) remains the primary contact for any follow-up technical support or spare parts needs.
EVA pellets are widely used in the footwear industry due to their foaming characteristics, softness, and durability. However, traditional conveying methods such as belt conveyors or bucket elevators often lead to material degradation, dust generation, and high maintenance costs. The hybrid pneumatic conveying system offered by headpowder provides a superior alternative. By combining the benefits of both dilute-phase and dense-phase technologies, the system can handle delicate materials without compromising throughput. The shoe material raw material conveying process becomes fully automated, with programmable logic controllers (PLCs) managing the entire sequence from material intake to discharge. Energy efficiency is another key advantage: the hybrid system typically consumes 20–30% less power compared to conventional pneumatic systems, thanks to the optimized air-to-material ratio. Moreover, the system footprint is compact, making it ideal for factories with limited space. For Wenzhou’s competitive footwear manufacturing environment, this technology has become a game-changer, enabling faster production cycles and higher product consistency. If you are interested in learning more about how headpowder can tailor a similar solution for your facility, please contact Manager Zhang via WeChat: 15662777102.
For reference, the key technical parameters of the EVA pellet hybrid conveying system installed at the Wenzhou facility are as follows: conveying capacity of 3–5 tons per hour, conveying distance of 120 meters (horizontal) plus 15 meters (vertical), pipeline diameter of 150 mm, air velocity ranging from 15 m/s to 25 m/s depending on the phase, blower power of 55 kW, and a control system based on Siemens S7-1200 PLC with HMI touchscreen interface. The system includes four discharge points, each equipped with a rotary valve and a level sensor. The material receiving hopper has a capacity of 2 cubic meters and is fitted with a dust collector. All components are manufactured from stainless steel 304, ensuring corrosion resistance and long service life. Shandong Headpowder Engineering Co., Ltd. provided a full set of engineering drawings, operation manuals, and spare parts lists. The warranty period is 24 months, with extended service contracts available. For detailed technical discussions or to request a copy of the system layout, please reach out to Manager Zhang at WeChat: 15662777102.
This Zhejiang Wenzhou shoe material enterprise EVA pellet hybrid pneumatic conveying project case demonstrates the effectiveness of headpowder’s engineering expertise in solving real-world material handling challenges. The hybrid pneumatic conveying engineering solution not only met but exceeded the client’s expectations in terms of efficiency, reliability, and product quality. Shandong Headpowder Engineering Co., Ltd. continues to innovate in the field of pneumatic conveying, offering customized solutions for various granular materials beyond EVA, including TPR, rubber, plastic pellets, and even food-grade powders. If you are involved in the footwear, plastic, or chemical industries and face challenges in material transport, headpowder is your trusted partner. Contact Manager Zhang today via WeChat: 15662777102 to schedule a free consultation or to visit the Wenzhou installation site for a firsthand demonstration. The team looks forward to assisting you with your next project.
Shandong Headpowder Engineering Co., Ltd.
156-6277-7102（Zhang manager） 
0531-83386006 
Jinan City, Shandong, China Province 
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