IntroductionPolyurethane (PU) is globally recognized as one of the most versatile and high-performance materials in modern insole manufacturing. Known for its superior physical feedback and structural stability, PU serves as the cornerstone of the professional athletic and functional orthotics markets. At Aybroad, we combine advanced material science with automated pouring processes to deliver PU solutions with unprecedented responsiveness and longevity.
Superior Physical Properties: Resilient by Design
The defining advantage of PU lies in its exceptional energy return and remarkably low Compression Set. Unlike standard foams that thin out or collapse over time, PU maintains its thickness and supportive properties throughout the product's lifecycle. Additionally, PU offers excellent biocompatibility and a warm, premium tactile feel, providing users with superior "step-in" comfort from day one.
Aybroad’s Manufacturing Edge: Precision & Automation
Our strength in PU production stems from extreme process control. Aybroad operates advanced automated rotary PU injection lines. Through digital control systems, we precisely calibrate the ratio of Isocyanate to Polyol, allowing for customized adjustments of hardness (Shore A 10-40) and density.
Our signature capability is Dual-Density Pouring Technology: We can achieve rigid support in the heel and soft rebound in the forefoot within a single insole. This integrated, one-shot molding process eliminates excessive adhesives and significantly enhances the structural integrity of the final product.
Applications & Compliance
PU is the go-to material for premium running shoes, basketball insoles, and work boots requiring all-day support. Aybroad guarantees that all PU raw materials comply with global RSL (Restricted Substances List) standards, including REACH and RoHS. We also offer functional modifications, such as antimicrobial or anti-static additives, to provide differentiated solutions for our brand partners.