The TPU composite film production line is an automated production equipment designed specifically for producing thermoplastic polyurethane (TPU) composite films. By compounding TPU with other materials such as PET, PP, non-woven fabric, etc., it forms multi-layer structural materials with excellent performance. Here is a detailed introduction from the aspects of technical principles, production line processes, core equipment, market situation, etc.:
1、 Technical principles and material characteristics
Advantages of TPU material
TPU has high elasticity, wear resistance, impact resistance, aging resistance and other characteristics. After compounding, it can improve the waterproof, breathable and durable properties of the substrate.
Principle of Composite Process
After melting TPU through an extruder, it is combined with other substrates (such as PET film, non-woven fabric) through co extrusion or lamination to form a multi-layer structure. The composite layers are bonded by hot melt or glue to ensure high peel strength.
2、 The entire process of the production line
raw material preparation
TPU particles are mixed with additives to ensure material stability.
Roll up the substrate (such as PET film, non-woven fabric) and prepare for lamination.
Extrusion and Composite
Twin screw extruder: high-temperature plasticizing TPU to form a uniform melt.
Composite mold: The TPU melt is compounded with the substrate through a T-shaped die or distributor.
Forming and Cooling
Three roll calender: preliminary cooling and shaping of composite film.
Cooling rack: secondary cooling to ensure dimensional stability.
Cutting and winding
Automatic thickness measurement and cutting: Cut waste edges according to preset specifications.
Tension control winding: Constant tension winding ensures that the film roll is flat.
3、 Core equipment composition
Extrusion System
Twin screw extruder: adapted to the high viscosity characteristics of TPU, ensuring uniform plasticization.
Screen changer and metering pump: filter impurities and stabilize extrusion pressure.
composite system
Composite mold: supports multi-layer co extrusion or laminated composite.
Adhesive coating device (optional): used for adhesive composite process.
Forming and Cooling
Three roll calender: chrome plated roller surface, temperature control accuracy ± 1 ℃.
Cooling roller set: Teflon coated anti stick to ensure rapid cooling.
Automated control
Microcomputer integrated control: remote monitoring of extrusion temperature, speed, tension and other parameters.
Automatic winding: equipped with EPC correction system to ensure neat winding.

5、 Application Fields
Medical protection
Medical protective clothing and surgical gowns: TPU composite non-woven fabric, waterproof, breathable, and lightweight.
High end packaging
Food and electronic product packaging: TPU composite PET film enhances barrier properties and appearance.
waterproofing in building
Waterproof breathable film: TPU composite polyester cloth, used for waterproofing of building exterior walls or roofs.
Industrial protection
Dustproof clothing and chemical protective clothing: TPU composite high-strength fiber cloth provides physical and chemical protection.