はじめに
SHANGHAI — The 110th China International Occupational Safety & Health Goods Expo (CIOSH) just wrapped up at the Shanghai New International Expo Centre. Marking its 60th anniversary, the event covered 80,000 square meters and brought together nearly 1,400 enterprises. Zhejiang Haifeng Automation Equipment Co., Ltd. stood right alongside global PPE industry pioneers, showcasing exactly how PU manufacturing needs to adapt in a challenging year.
It’s not just about showing off new tech anymore. It’s about survival, margins, and raw materials.
"Speaking with clients on the floor, one thing became painfully clear," noted Jiacheng Dai, Vice President of Sales & Marketing at Haifeng. "The ongoing blockade in the Strait of Hormuz is hitting the PU footwear sector much harder than anyone anticipated in 2026. Raw material prices have spiked significantly. We all hope the Middle East region stabilizes soon, but right now, factories have to adapt."
Jiacheng Dai
When chemical costs surge, wasting material on scrap isn’t an option. This economic pressure is exactly why Haifeng’s automated PU spraying and molding solutions drew heavy attention from safety footwear manufacturers trying to protect their bottom line.
Killing the Scrap Rate: The PU Spraying & Casting Breakthrough
Polyurethane is the undisputed standard for safety outsoles, delivering unmatched wear resistance, slip resistance, and shock absorption. But traditional manufacturing processes can be messy, manual, and prone to high defect rates. We engineered our automated robotic spraying and casting lines to eliminate the exact bottlenecks that factory managers hate:
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No More Peeling or Fading: We integrate color pastes directly into the liquid PU matrix at the mixing head. The color chemically bonds to become the material itself. It never fades, chips, or scratches off like traditional surface paint.
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Tackling the “Blistering” Nightmare: Hidden micro-pores ruin entire batches. By combining high-pressure atomized spraying with precise 3D robotic trajectory tracking, we lay down a flawless, near-zero pore surface layer. You get consistent, aesthetic yields every single time.
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Handling Solvent-Free Chemistry: Processing 100% solvent-free spraying systems is notoriously tricky due to strict temperature and viscosity requirements. Our advanced closed-loop metering and thermal-regulated fluid systems handle these conditions flawlessly. We guarantee absolute precision and stability throughout the entire spraying process, keeping your shop green and ESG-compliant without slowing down the line.
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Dual-Density Precision (Spray the Outsole, Pour the Midsole): Any footwear or sole utilizing our spraying process is inherently dual-density, combining two optimized techniques. First, the robotic arm rapidly sprays a high-density, abrasion-resistant outsole—taking just 8 to 20 seconds per mold cavity, depending on complexity. This is seamlessly followed by a precise pour of a low-density “soft core” midsole for maximum underfoot cushioning. One integrated process, two distinct physical properties.
Stop Patching Lines. Build Turnkey Plants.
Shoe manufacturers often lose critical production time trying to make mismatched machines talk to each other. We don’t just sell individual units; we build end-to-end turnkey ecosystems.
From dual-density spraying and casting to advanced TPU granulation (crucial for lightweight ETPU beads), we design the entire factory flow. We engineer systems that match your exact floor plan, flow rate requirements, and material formulations.
Trusted by the Industry Benchmarks
Industry leaders do not gamble their throughput on unproven equipment. Companies like Huide Technology, Shanghai ShimaTechnology, and Saina Group run our automated systems. They trust our engineering because it delivers flawless stoichiometry and maximum uptime, day in and day out.
To see the actual throughput metrics and layout designs from our global installations, check out the Cases page on our website. Stop optimizing by trial and error—contact our engineering team today to map out a customized, turnkey PU production line for your facility.