Discover our initial selection of precision-engineered high-capacity extrusion lines designed for architectural, automotive, and industrial composite solutions.
Designed for heavy-duty composite sheet production with superior flatness control and high throughput capacity.
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Specialized thermoforming sheet lines optimized for food packaging, medical grade applications, and consumer electronics containers.
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Advanced co-extrusion technology for elastomeric sheets utilized in automotive interiors, waterproofing, and structural membranes.
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Rugged boards production solutions engineered to replace traditional plywood with lightweight, reusable construction formwork.
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Eco-friendly copolyester processing machinery providing high transparency and chemical resistance for premium cosmetics and medical packaging.
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The gold standard in optical-grade automotive interlayers. Includes automatic roll-embossing and wedge-profile HUD adjustments.
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High-torque extruders with optimized screw design for producing heavy-duty polyethylene boards utilized in engineering and chemical tanks.
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Eco-conscious engineering systems for processing bio-degradable polylactic acid with precise crystallizing and moisture control.
Explore SpecificationsPolyvinyl Butyral (PVB) film stands as a critical structural and safety element in the glass processing, automotive safety, and building integration sectors. Due to its high viscoelasticity, optical clarity, adhesion to glass, and impact energy absorption properties, PVB is the standard interlayer for safety laminated glass.
Standard casting technologies face difficulties when adapting to complex variations in resin quality, localized climate constraints during storage, and processing parameters for multi-layered structures. Customized PVB film extrusion lines address these challenges through precise screw geometry, melt-pump stabilizing systems, gravimetric dosing, and advanced cross-directional caliper control. This ensures optical homogeneity and reliable thickness stability.
Processing PVB requires precise control over raw material hygroscopicity, plasticizer dosage, thermal sensitivity, and melt rheology. Below is the system engineering approach adopted by Gwell.
Utilizing high-torque single-screw or co-rotating twin-screw setups with L/D ratios optimized for PVB melt behavior. This layout prevents high-shear thermal degradation while ensuring uniform dispersion of plasticizers and adhesion-control additives.
For Heads-Up Display (HUD) automotive applications, Gwell's extrusion lines employ custom T-dies with automatic thermal bolt control to create a continuous wedge (tapered) profile. This layout eliminates double-image reflections on the windshield.
Specially engraved calender rollers imprint a precise microscopic diamond or random pattern on the film surface. This structure facilitates de-airing during vacuum pre-lamination and prevents film blocking during storage.
The global demand for PVB film is closely linked to performance requirements in several key sectors:
Explore Gwell's engineering capabilities across our primary product classifications: Cast Film, Board, Sheet, and Solar Film lines.
Designed for high-weatherability surface protection films used on roofing tiles and exterior panels.
Optimized for high-elasticity TPU laminates used in technical apparel and medical barriers.
Provides optical clarity and high puncture resistance for automotive paint protection film (PPF).
Fluoropolymer film extrusion designed for solar backsheets and chemical-resistant protective layers.
Engineered for HUD automotive glass, using precise variable-die-lip technology to produce tapered film profiles.
Integrated automatic dosing, optical screening, and tension-controlled winding for architectural interlayers.
Engineered for precise PVA dosing and cooling, commonly used for detergent unit dose packaging.
Polyimide high-temperature cast lines for flexible electronics and thermal management films.
China Gwell Machinery is a high-tech enterprise dedicated to the design and manufacture of plastic extrusion lines for Film, Sheet, and Profiles. Relying on advanced industrial expertise and a commitment to innovation, Gwell focuses on delivering high-tech product lines for international markets.
"Expertise creates customers' values" is the company's operating philosophy. We partner with domestic universities and international materials labs to continuously optimize our extrusion configurations.
Our industrial reputation is built on robust quality management, technical innovation, and customer support.
We collaborate with universities and research institutes to develop high-tech solutions, including dynamic thickness adjustment and gravimetric controls.
We provide end-to-end commissioning, operator training, customized formulation advice, and ongoing support for spare parts.
With three manufacturing bases, Gwell can design, construct, test, and deliver over 1,000 advanced extrusion lines annually.
Our lines are exported to more than 60 countries and regions across Europe, North America, Southeast Asia, and the Middle East.
Over 100 mechanical, chemical, and electrical automation engineers focus on customizing hardware configurations for specific resins.
Gain access to plastic processing technology and optimize your manufacturing cost-per-ton metrics.
Request a QuotationOur engineering standards align with major international safety, electrical, and quality management protocols.
Stay informed about Gwell's international trade shows, newly launched extrusion designs, and material processing updates.
Upcoming exhibition displaying our developments in multilayer co-extrusion technology for smart coatings.
Introduction of a synthetic leather alternative production line, delivering environmental safety and soft tactile feedback.
An overview of how our wedge film extrusion lines maintain high precision and compatibility for automotive HUDs.
Expert answers to common processing and deployment queries from production managers and procurement engineers.
Gwell works with global raw material suppliers and glass laminators to maintain equipment compatibility.
Discover our second selection of processing systems, focused on functional solar films and industrial barrier technologies.
Designed for solar cell encapsulation, offering high cross-linking efficiency and thermal performance.
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Optimized co-extrusion technology for EPE structured solar encapsulation films, enhancing resistance to Potential Induced Degradation (PID).
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Engineered for surface cladding and laminate substrates in high-end construction materials.
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Designed for solar glass lamination, providing long-term insulation and UV protection for facade integration.
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High-speed lines for producing corrugated/hollow PP plastic sheets used in packaging, logistics, and protection boards.
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Designed for optical diffuser plate fabrication, featuring high-accuracy calender rolls for LED backlight displays.
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Specialized equipment for lightweight structural honeycomb core panels used in logistics boxes and automotive trunks.
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Advanced high-barrier co-extrusion technology (up to 9 layers) designed for oxygen protection in food packaging.
Explore SpecificationsGwell's R&D capabilities and precision machining are recognized across the polymer processing industry. Contact our application engineers for details on throughput capacity, L/D ratios, and equipment footprints.
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