What is the difference between PU film and TPU film? Although the two are only one letter, the performance gap between the two is still very large. Let's take a look at it!
PU film is a non-toxic and environmentally friendly polymer elastomer film with high strength, wear resistance, good elasticity, weather resistance, environmental protection, non-toxic, recoverable and decomposable properties. The TPU film is a film made by a special process such as calendering, casting, film blowing, coating, etc. on the basis of TPU pellets.
What is the difference between TPU film and TPU film? PU film has high light transmission, no yellowing, weather resistance, high adhesion, high elongation and high elasticity. Therefore, it can be specially designed to be combined with a variety of thermoplastic film, including polycarbonate, polymethacrylic acid, etc., to form an advanced non-sputtering bulletproof, explosion-proof and riot-proof glass interlayer, which is full of light, thin and high impact resistance. . Some series of films are extremely flexible, with a tensile strength of up to 300 pounds per inch and a maximum elongation of up to 600%. Therefore, it can effectively absorb impact energy, so its application range includes: bank, political and embassy office buildings and mansions, prisons, bulletproof cars, cash trucks, jewelry stores, museums, super high-speed trains, space, military, and durable Typhoon glass, liquid crystal composite layer, computer screen, zoo, etc.
PU film: TPU (Thermoplastic polyurethanes), thermoplastic TPU elastomer, which is made by MDI containing NCO functional group and POLYOL and 1.4BG containing OH functional group, which are made by kneading and kneading. The mechanical strength is very good. Therefore, it is widely used in injection, extrusion, calendering and dissolution into solution type resins. It is a plastic material often used by plastics processing industry. Its products cover the range of industrial applications and civilian necessities. . The TPU film is a film made by a special process such as calendering, casting, film blowing, coating, etc. on the basis of TPU pellets.
TPU film: TPU not only has excellent high tensile strength, high tensile strength, toughness and aging resistance, but also is a mature environmentally friendly material. At present, TPU has been widely used in medical and sports, etc., and it can not be used with other plastic materials. Compared with high strength, good toughness, wear resistance, cold resistance, oil resistance, water resistance, aging resistance, weather resistance, etc., he has high water repellency, moisture resistance, cold resistance, antibacterial, mildew proof, warmth, UV resistance and energy release. Many excellent features. TPU films are mainly prepared by extrusion, calendering and blow molding processes. Due to the molecular structure of polyurethanes, one can change the elasticity, hardness and hydrophilicity by adjusting the proportion of polyurethane block components. It is ideal for hot pressing, high frequency, sewing or joining with adhesives. In addition, this material can be printed in three dimensions by ink printing, vacuum or high frequency. Products are widely used in medical and health, shoe materials, bags, sports equipment, automotive industry, clothing, gloves, blowing products, high-grade textile fabrics and other fields. TPU is increasingly popular for its superior performance and environmental protection concepts. At present, wherever PVC is used, TPU can be a substitute for PVC. But the advantages of TPU, PVC is far behind. TPU not only has excellent high tension, high tensile strength, toughness and aging resistance, but also is a mature environmentally friendly material. At present, TPU has been widely used in: shoe materials, ready-to-wear, inflatable toys, sports equipment for water and underwater, medical equipment, fitness equipment, car seat materials, umbrellas, luggage, leather bags, etc.
The TPU film is formed on the basis of TPU pellets by calendering, casting, film blowing, coating, and the like. At present, it is widely used in sports shoes: trademark decoration on the sole and upper, airbags, air cushions, oil bags, etc. Nowadays, there are two trends in the application of TPU film on sports shoes: one is the popular style of women's sandals, that is, the high transparent TPU film is directly cut, or screen printing, or cloth. The base is formed into a mesh cloth, etc., and the high frequency is formed and bonded to the upper, which has functional and decorative effects. The second is to use the waterproof and moisture-permeable TPU film and the shoe material to be used together to achieve the effect of waterproof and moisture permeability.