Zhejiang Newcastle News Weekly | Issue 9: Production Technology of TPU Film

At present, there are three mainstream production processes for TPU films: cast extrusion, blow molding, and calendering. Each process has its own advantages, corresponds to different product positioning and application scenarios, and precisely meets market demands.

① Cast Extrusion Process: The first choice for high-end applications, delivering ultimate uniformity and clarity.

It is currently the most mainstream production process for TPU films, especially suitable for manufacturing products with high transparency and superior surface quality, such as medical-grade films and optical-grade films.

② Blow Molding Process: High-efficiency mass production for general scenarios. Also known as the bubble tube method, the blow molding process features high-efficiency mass production. It is suitable for manufacturing popular products such as garment laminated films, packaging bags, and waterproof films for shoe materials, boasting the widest range of applications.

③ Calendering Process: High-end customization to unlock special performance

The calendering process is a high-end manufacturing technology with relatively high investment costs. However, the films produced deliver superior comprehensive properties, making it ideal for customized and high-performance applications, such as interlayer films for bulletproof glass and high-hardness TPU films.

Nowadays, the TPU film industry is upgrading toward functionalization, high performance and compounding, while production processes are also undergoing continuous iteration and optimization.

Keeping pace with industry trends, our company is fully deploying in the field of new energy automotive film materials, and has introduced the world-leading standard production line from Davis-Standard, USA. Founded in 1848, Davis-Standard has specialized in the R&D and manufacturing of extrusion equipment for nearly 200 years. It launched its first extruder in 1948 and has kept upgrading ever since. Through global layout and strategic mergers and acquisitions, it has built a complete system of high-end extrusion equipment. Its production lines are renowned for outstanding stability, high precision and high efficiency, and have established strategic partnerships with well-known enterprises including Baxter Healthcare, DuPont and Nike.

Equipped with China’s first EDI 105 screw and fully automatic EDI thickness-adjusting die from the United States, supplemented by a Siemens multi-channel dynamic servo workbench and Canada DALSA 8K high-definition high-speed scanning industrial camera inspection system, we have also built a Class 100,000 dust-free workshop. Leveraging the core technical advantages of the Davis-Standard production line, we have realized the standardized R&D and manufacturing of paint protection films for new energy vehicles, striving to build a future factory for new functional film materials for new energy vehicles.

From core equipment to production environment, we guarantee product quality in all dimensions, enabling production empowered by technology and crafting premium products with sophisticated craftsmanship.

A thin sheet of TPU film embodies the ingenuity of craftsmanship and the power of technology. From raw resin pellets to finished products, every precisely controlled procedure and every iterative upgrade of the process aims to let this all-round film integrate better into daily life and empower high-quality development across all industries.