Casting film production line
PVB/SGP glass intermediate film production line
High-Performance Solution for Laminated Safety Glass Manufacturing
The PVB/SGP Glass Interlayer Film Production Line is specially designed for manufacturing high-quality interlayer films used in laminated safety glass. The line can produce both PVB (Polyvinyl Butyral) film and SGP (SentryGlas? Plus) film for a wide range of applications, including automotive windshields, architectural laminated glass, hurricane-resistant glass, bullet-resistant glass and photovoltaic glass.
With years of experience in glass interlayer film production technology, we provide complete turnkey solutions covering raw material handling, extrusion, casting, cooling, drying, winding and intelligent automation control systems. The production line adopts advanced extrusion technology and optimized process design to ensure uniform thickness, excellent transparency, stable adhesion performance and high production efficiency.
Our PVB and SGP film production lines are widely used by laminated glass manufacturers seeking reliable production performance, consistent product quality and long-term operational stability.
Available Production Technologies
Currently, two mature production processes are available for PVB and SGP interlayer film manufacturing.
Roller Method
The Roller Method uses two or three precision rollers, including polished rollers and patterned rollers, to cast and shape the film. This process offers lower investment costs, mature production technology, easy operation and stable product quality, making it suitable for a wide range of laminated glass applications.
Water Bath Method
The Water Bath Method utilizes a water cooling tank instead of casting rollers to shape and stabilize the film. After cooling, the film passes through water removal, thickness measurement, drying, cooling, release film lamination and winding systems. This technology is widely recognized for producing films with higher transparency, improved whiteness and more uniform surface quality.
Product Features
Precision Extrusion System
The specially designed screw and barrel structure maximizes production output while ensuring stable melt plasticization and uniform film thickness. Advanced extrusion technology provides excellent transparency and consistent product quality for high-performance laminated glass applications.
Optimized Water Tank Design
The size and configuration of the water tanks directly affect production speed and film quality. Our optimized water circulation system ensures stable temperature control and uniform cooling performance throughout the production process.
Advanced Air Knife System
A precisely engineered air knife system efficiently removes excess moisture from the film surface. Proper air flow distribution and positioning help improve film quality and ensure stable high-speed production.
High-Efficiency Drying and Stress Relief System
The drying oven not only removes residual moisture but also relieves internal stress within the film. This process significantly reduces thermal shrinkage during glass lamination and improves dimensional stability in final applications.
Intelligent Thickness Measurement and Control
An online thickness measurement system continuously monitors film thickness and automatically adjusts process parameters to maintain consistent product specifications and reduce material waste.
Fully Automatic Tension Control
The winding system adopts advanced servo-driven tension control technology to ensure stable film tension, smooth winding performance and high-quality finished rolls.
Siemens PLC Intelligent Automation
The entire production line is equipped with a Siemens PLC control system for precise management of temperature, pressure, speed and tension. Real-time monitoring and automatic adjustment improve production efficiency and ensure stable product quality.
Applications of PVB and SGP Interlayer Films
PVB and SGP interlayer films manufactured by this production line are widely used in:
Automotive windshield laminated glass
Automotive side and rear safety glass
Architectural laminated glass
Curtain wall glass systems
Hurricane-resistant glass
Bullet-resistant and security glass
Sound insulation laminated glass
High-performance structural glazing
Photovoltaic laminated glass
Transportation and railway safety glass
Advantages of Our PVB/SGP Film Production Line
Suitable for both PVB and SGP interlayer film production
Uniform film thickness across the entire width
Excellent optical clarity and transparency
Stable adhesion and lamination performance
High-speed continuous production
Reduced material waste and energy consumption
Intelligent automation and easy operation
Long service life and reliable performance
Complete turnkey project support
Global installation, commissioning and technical service
Why Choose Our PVB/SGP Film Production Line
As a professional manufacturer of plastic extrusion machinery, we provide complete PVB and SGP interlayer film production solutions for laminated glass manufacturers worldwide. From project planning and equipment manufacturing to installation, commissioning and operator training, our experienced engineering team delivers reliable turnkey projects designed to maximize productivity, product quality and investment returns.
