Overview
Easy-to-Process TPU Granules are specialized thermoplastic polyurethane formulations optimized for manufacturing efficiency. These materials combine the elasticity of rubber with the processability of thermoplastics, offering reduced cycle times and energy consumption compared to conventional TPUs. Developed for industrial users, these granules feature modified rheological properties that enable smoother flow during injection molding or extrusion. Their consistent pellet size and shape ensure uniform melting and minimize processing defects, making them particularly suitable for complex geometries and thin-walled products.
Physical and Chemical Properties
These TPU granules exhibit a unique balance of hardness (typically Shore 60A-75D) and flexibility, with tensile strength ranging from 30-60 MPa. Their melt flow index (MFI) is carefully controlled for optimal processing characteristics, usually between 5-50 g/10min (190°C/2.16kg). Chemically, they demonstrate excellent resistance to oils, greases, and many solvents, along with good UV stability when properly compounded. The granules maintain stable properties across a wide temperature range (-40°C to +100°C continuous use), with some grades capable of brief exposure to 150°C.
Main Applications
In footwear manufacturing, these granules are extensively used for shoe soles, heel counters, and sportswear components due to their excellent abrasion resistance and energy return. Automotive applications include CVJ boots, airbag covers, and interior trim parts where vibration damping is required. The medical industry utilizes them for catheter tubing and surgical instrument grips, benefiting from their biocompatibility in specific grades. Industrial applications range from conveyor belts to hydraulic seals, while emerging uses include flexible 3D printing filaments and wearable device components.
Safety and Storage
While TPU is generally considered non-toxic in solid form, processing at high temperatures (above 200°C) may release small amounts of isocyanates. Always use local exhaust ventilation and maintain processing equipment below recommended temperature thresholds. Storage requires protection from moisture absorption, which can cause processing defects. Original packaging should remain sealed until use, with desiccant packs recommended for opened containers. Shelf life is typically 12-24 months when stored properly below 30°C with relative humidity under 50%.
B2B Procurement Guide
When sourcing easy-to-process TPU granules, specify the required Shore hardness (A scale for softer applications, D scale for rigid parts) and any necessary certifications (FDA, USP Class VI, REACH, etc.). Consider ordering sample quantities for process validation before large purchases. For consistent quality, establish relationships with manufacturers who provide batch-to-batch consistency reports. Bulk purchasing (500kg+) typically offers 15-30% cost savings, but ensure your storage facilities can maintain proper conditions. Lead times vary from 2-8 weeks depending on customization requirements and global supply conditions.
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