TPU film (thermoplastic polyurethane film) is a thermoplastic polyurethane film material made of thermoplastic polyurethane elastomer rubber. TPU is a special elastic material between rubber and plastic, which has high modulus, high strength, high elongation, high elasticity, and excellent wear resistance, oil resistance, low temperature resistance, and aging resistance.
TPU film has the following characteristics:
1.Toughness and strength: TPU film has high toughness and strength, can return to its original shape after stretching, has good elasticity, and is not easy to deform.
2.Abrasion resistance: TPU film has good abrasion resistance and is suitable for use in some abrasive environments.
3.Cold resistance: TPU film still maintains good flexibility and elasticity in low temperature environment, and is not easy to harden and embrittlement.
4.Oil resistance: TPU film has good resistance to grease and can resist grease erosion.
5.Water resistance: TPU film has good waterproof performance and has high waterproof ability.
6.Weather resistance: TPU film can maintain stability and good performance in various climatic conditions.
7.Environmental friendliness: TPU film is an environmentally friendly material that is recyclable and decomposable.
The production process of TPU film generally includes steps such as raw material preparation, mixing and granulation, extrusion, and cooling [7]. First, TPU granules are premixed and dried with other additives such as antioxidants and ultraviolet absorbers. Then, the dried raw material is pushed into the spiral sleeve by the extrusion motor for melting; Next, the molten material is cast and cooled through ceramic and rubber rollers, and the thickness is adjusted. Finally, the cooled film is trimmed and wound to obtain the finished TPU film.
TPU films have a wide range of applications in many fields. For example, in the manufacture of footwear materials, TPU films are widely used in high-end footwear products due to their excellent elasticity and abrasion resistance [5]. In addition, TPU films are also used in food packaging, medical supplies, inflatable bags, automotive protective films, sports and leisure equipment, toys, and consumer packaging [5]. TPU films are becoming more and more popular due to their excellent performance and environmental protection properties. TPU film has a variety of forms and colors to choose from, and can be processed into various types such as transparent film, fog**, special film and so on according to different needs.
Overall, TPU film is a thermoplastic polyurethane material with excellent toughness, strength, and abrasion resistance. It has a wide range of applications in multiple fields and is a material choice with excellent performance and environmental protection.