JWELL TPU Cast Film Line – Advanced Extrusion Solutions for High-Performance TPU Films
Jul 21, 2025
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JWELL TPU Cast Film Line – Advanced Extrusion Solutions
for High-Performance TPU Films
TPU (Thermoplastic Polyurethane)
is a new-generation, eco-friendly material that has seen explosive growth in recent years. Driven by the continuous development of innovative TPU grades by domestic manufacturers, a wide range of TPU elastomers have entered the market-among which TPU film stands out as a fast-growing application, significantly boosting the film processing industry.
To meet growing demand, JWELL's TPU cast film line offers a professional, efficient solution for the extrusion of high-quality TPU films. The production of TPU film generally involves extrusion blow molding, extrusion casting, and extrusion calendering. Among these, cast film extrusion has become one of the most stable and precise methods.
🛠️ Key Considerations When Producing TPU Films
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Pre-Drying Is Essential
TPU is a highly hygroscopic resin. No matter how well-packed the raw material is, pre-drying is mandatory. Moisture in TPU can severely affect melt quality and final film appearance. It is recommended to dry TPU at 80–100°C for at least 3 hours. If color powder or masterbatch is used, it should be thoroughly mixed with natural TPU pellets and dried together.
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Screw Design & Speed
TPU is sensitive to shear. Proper screw speed control is critical. Excessively high RPM may cause material degradation, while too low RPM may lead to decomposition due to long residence time. Optimal screw speed is typically 20–60 RPM, with a L/D ratio of 25–30 and a compression ratio of 2–3 for best results on the JWELL TPU cast film line.
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Material Selection & Temperature Control
To reduce shrinkage and ensure dimensional stability, TPU with higher hardness is preferred. Lower forming temperature and pressure help avoid material stress. The barrel should be controlled in 4–5 heating zones with accurate temperature regulation to maintain a stable extrusion process on the JWELL TPU cast film line.
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Roller Design & Drive System
All rollers should be anti-adhesive coated to prevent film sticking. Independent motor drives with precise speed synchronization ensure flat film output and clean winding. Improper tension or sticky surfaces can cause uneven rolls and poor film quality, but JWELL TPU cast film line solves these issues with intelligent roller and control systems.
🎯 Diverse Applications of TPU Films
TPU film is widely used across various industries thanks to its elasticity, abrasion resistance, and biocompatibility.
Common applications include: Apparel and textile lamination, Footwear and sports gear, Military tents and life vests, Medical accessories and hygiene materials.
According to raw material type, TPU films can be classified as:
Standard polyester TPU
Waterproof breathable polyether TPU
Hydrolysis-resistant polyether TPU
Polycarbonate-based TPU
Caprolactone TPU
Polyolefin TPU
Each category further includes multiple surface finishes: matte, transparent, dyed, frosted, and more-supporting a variety of technical and aesthetic requirements.
🚀 Why Choose JWELL TPU Cast Film Line?
With rich experience in polymer extrusion technology, JWELL Machinery offers high-precision, energy-efficient, and intelligent TPU cast film lines tailored to customer needs. Whether for basic production or specialty TPU films, JWELL's solutions deliver:
Consistent thickness and surface quality
Stable extrusion and winding performance
Custom line configurations for specific TPU film types
Reliable technical support and turnkey service
Let JWELL TPU cast film line be your trusted solution for high-performance TPU film production. From equipment design to process optimization, JWELL helps you stay ahead in the competitive flexible film market.