EVA (ethylene-vinyl acetate) granules are essential raw materials for photovoltaic encapsulation film, foamed products, hot melt adhesives, cable compounds, and color masterbatch. To ensure consistent feeding and contamination-free handling, a professionally designed pneumatic conveying system is necessary. Our EVA particle pneumatic conveying solution is custom engineered to transfer granules from silos, bag dump stations, or bulk bag unloaders to processing machines safely, gently, and continuously.

Pneumatic conveying replaces mechanical handling methods that cause dust leakage, equipment wear, material segregation, or product degradation. A sealed pipeline keeps EVA granules isolated from the plant environment, prevents moisture pickup, and eliminates cross-contamination between different grades. Low-speed conveying can be selected to minimize pellet breakage and fines generation, which is critical for high-value EVA compounds used in demanding film and molding processes.

Every processing plant is different. We engineer each solution according to your material properties, conveying distance, capacity, and plant layout. For fragile EVA pellets over a long distance, a dense phase system operating at low velocity reduces particle damage. For high-capacity short-distance transfer, a dilute phase pressure system is more economical. Our engineers calculate pipe diameter, air velocity, pressure drop, and pickup velocity to ensure reliable startup and stable operation.

We offer dilute phase and dense phase systems to match your exact requirements. Dilute phase conveying uses high-speed air to carry granules through the pipeline; it is simple, economical, and ideal for short distances and moderate capacity. Dense phase conveying moves granules in a low-velocity plug flow, reducing pellet damage and dust generation. This mode is especially suitable for soft, tacky, or shear-sensitive EVA formulations and long-distance transfer.

Key components include a positive displacement blower or vacuum pump, rotary airlock feeder, filter receiver, cyclone separator, diverter valves, and a PLC control panel. The rotary airlock feeder supplies material uniformly and prevents air leakage. The filter receiver separates EVA granules from the air stream and cleans itself automatically. Diverter valves direct material to different lines or silos. Contact parts are made of wear-resistant, anti-static materials, and the system can be built in carbon steel, stainless steel, or aluminum.

Advanced automation makes the system easy to operate. A PLC controller manages sequence logic, material demand, filter cleaning, valve switching, and alarms. The panel displays real-time status, production reports, and fault diagnostics. Pressure sensors and air flow meters monitor line conditions, and the system can adjust fan speed to prevent plugging and reduce energy consumption. Remote access and SCADA integration are optional.

Our EVA granule conveying systems are used in photovoltaic film, foam sheet, hot melt adhesive, cable compounding, and masterbatch manufacturing. They can be combined with drying hoppers, blenders, extruders, and injection molding machines. Optional nitrogen protection is available for oxidation-sensitive grades, and grounded, polished pipes meet anti-static and explosion-proof requirements. We provide complete process design, installation guidance, and commissioning support to help you build a safe, clean, and efficient material handling line.

Contact our team today to discuss your EVA particle conveying requirements. We will provide a tailored proposal, competitive pricing, and reliable after-sales support to optimize your production line.