What are the composite methods of TPU composite film?

TPU composite film is a composite material made of thermoplastic polyurethane (TPU). It is widely used in many fields because of its excellent physical properties and chemical stability. The composite methods of TPU composite film mainly include the following:

1. Hot melt lamination: This is a common lamination method that melts the surface of the TPU film and another material (such as cloth, paper or other films) through heating, and then bonds them together through pressure.

2. Adhesive lamination: Use specific adhesives to bond the TPU film with other materials. This method allows the selection of different types of adhesives as needed to adapt to different materials and application environments.

3. Lamination and compounding: The TPU film and other materials are stacked layer by layer through a laminator, and treated with high temperature and high pressure to make them closely combined.

4. Co-extrusion compounding: During the extrusion process, TPU is extruded together with other materials to form a multi-layer composite film.

5. Coating composite: Coat TPU solution or melt on the substrate, and form a composite film through drying or solidification.

6. Solvent-free lamination: This is an environmentally friendly lamination method that does not use any solvent and uses a specific process to directly bond TPU to other materials.

Each compounding method has its specific application scenarios and advantages. Choosing the appropriate compounding method can maximize the performance and use of the TPU composite film.