Examine our high-performance systems optimized for solar frames, construction boards, and packaging sheet fabrication.
Thermoplastic Polyurethane (TPU) Paint Protection Film (PPF), colloquially referred to as "invisible car film," represents the pinnacle of surface safeguard technology. Primarily engineered for commercial fleets, utility vehicles, and passenger automobiles, this material demands exceptional optical transparency, mechanical resilience, and long-term chemical stability. At the core of high-grade PPF lies aliphatic polyurethane chemistry. Unlike aromatic alternatives, aliphatic structures lack benzene rings, preventing molecular breakdown and yellowing caused by solar ultraviolet (UV) radiation.
The extrusion process of aliphatic TPU is exceptionally complex. TPU is highly hygroscopic and exhibits significant shear sensitivity. To prevent hydrolysis and thermal degradation during melt flow, the extrusion line must integrate advanced drying systems, specialized screw profiles, and precise temperature controls. By preventing polymer chain breakdown, Gwell’s extrusion solutions ensure the physical properties—such as self-healing capability, tensile elongation, and impact absorption—remain intact throughout the film's operational life.
In the context of fleet protection, vehicles are continuously subjected to mechanical abrasions, gravel impacts, organic acids (bird droppings, bug splats), and extreme weather conditions. High-quality TPU film mitigates paint damage and minimizes commercial fleet downtime. For transport companies, investing in a robust extrusion line allows for the production of films that maintain fleet aesthetic integrity and long-term asset value.
Designing a high-precision TPU extrusion system requires meticulous control of melt dynamics, sheet casting calibration, and downstream winding tension control.
Custom screw design optimized for aliphatic elastomers. Mitigates local shear heat buildup, preventing polymer degradation and visual defects such as gels or "fish-eyes" in the finished TPU film.
Automatic coat-hanger T-die featuring thermal bolt control. Seamlessly integrates with thickness measuring sensors to execute real-time gauge corrections, ensuring cross-directional uniformity.
Synchronized co-extrusion/lamination modules. Applies protective PET carrier layers to both sides of the tacky TPU film while hot, ensuring a clean, bubble-free, and dust-free optical finish.
China has emerged as the global leader in high-tech plastic processing machinery. Leveraging localized industrial clusters, high-precision domestic tooling shops, and extensive raw-material access, Gwell manufactures state-of-the-art machinery without the high premium of European brands.
Our three production bases in Jiangsu and Zhejiang provinces operate within a highly integrated supply chain. We procure bimetallic cylinders, vacuum chambers, and electrical components from leading domestic and global suppliers, ensuring high build quality. Additionally, our dedicated assembly teams conduct rigorous testing on each machine before dispatch.
Furthermore, our R&D collaborations with scientific institutions enable us to introduce advanced features, such as low-shear melt channels and automated online defect scanning. These developments help minimize material waste and improve overall production efficiency.
A detailed blueprint outlining design requirements, material selections, and performance criteria for procurement professionals.
Fleet protective films require different specifications based on the operational environment. Fleet vehicles operating in construction zones require thick, impact-resistant films (8 to 12 mils), while high-speed logistics vehicles require thinner, high-clarity films (6 mils) to maintain optical clarity over branding elements. Our extrusion lines allow operators to adjust film thickness, tensile strength, and self-healing performance to meet varied customer needs.
Gwell systems are designed to process all primary grades of aliphatic TPU chips, including caprolactone and polyether bases. Our vacuum drying and conveying units prevent polymer hydration and ensure stable processing of raw materials.
Precise tension control is essential during the lamination of pressure-sensitive adhesives (PSA) and release liners. Our digital tension controller maintains constant winding tension to prevent wrinkling and ensure flat, consistent rolls.
Common questions regarding extrusion configurations, material characteristics, and system operation.
Explore our selection of sheet and film extrusion lines designed for solar, medical, and packaging applications.
Gwell specializes in four core areas of extrusion machinery, delivering customized solutions globally.
Designed for TPU cast films, ASA exterior decorative films, PVDF backplane membranes, and water-soluble PVA films.
Engineered for heavy-duty applications including PVC SPC/WPC construction boards, HDPE drainage sheets, and engineering polymers like PEEK.
Optimized for optical sheet production, including PC/PMMA/PCTG materials, thermoformable blister packaging, and biodegradable PLA materials.
Specialized lines for processing EVA, POE, EPE, and PVB films, essential for solar panel encapsulation and BIPV applications.
Expertise Creates Customers’ Value
China Gwell Machinery is a high-tech enterprise specializing in the manufacture of plastic extrusion lines for film, sheet, and profile applications. Drawing on our engineering resources and technical capabilities, Gwell delivers extrusion systems to domestic and international markets.
Our facilities house advanced tooling workshops, high-speed balancing benches, and dedicated test laboratories. Over the years, we have supplied extrusion machinery to clients in Europe, the Americas, and Southeast Asia.
Our manufacturing processes conform to global compliance and safety standards.
Stay updated on our recent technological achievements, product launches, and upcoming exhibitions.
Gwell is set to showcase its latest co-extrusion technology at upcoming international trade exhibitions.
Successful commissioning of a POE synthetic leather extrusion line, offering an eco-friendly alternative to PVC.
Gwell’s high-precision wedge-profile PVB film production line successfully completed its run for automotive windshield applications.
We collaborate with raw material suppliers and global component manufacturers to deliver reliable extrusion systems.
Get in touch with Gwell’s engineering team today. We provide consultation, custom system designs, and detailed quotes to meet your production requirements.
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