TPU film has good tensile elasticity, so it must be paid attention to during the traction and winding process. Generally, the tension stability should be maintained during the traction process and the traction force should be reduced as much as possible. Therefore, some equipment adopts tension closed-loop control to realize traction. Constant tension ensures the stability of the tension and rewinds by winding the gap.
The wear resistance of TPU films outweighs many other common polymers. More than five times more wear-resistant than natural rubber, it is one of the preferred materials for wear-resistant products.
The higher the hardness grade of the TPU film, the higher the puncture resistance and wear resistance of the product. The hardness level is low and the product exhibits a very supple texture and a very soft hand.
The TPU film has a tensile strength of up to 70 MPa and an elongation at break of up to 800%. One of the most acclaimed properties is its stretchability.
4. Weather resistance
The weathering resistance of TPU films is superior to that of natural rubber and other synthetic rubbers.
5. Low temperature flexibility
The TPU film has excellent low temperature flexibility. Even when exposed to as low as -30 degrees Celsius, most films remain flexible, making them ideal materials for demanding environments.
6. Good temperature resistance
The temperature resistance of TPU film can reach 130 degrees Celsius, and the temperature of polyether series can reach 90 degrees Celsius.
7. Biomedical performance
TPU film has excellent biocompatibility, non-toxic, no allergic reaction, no local irritation, no heat source.
8. Oil and chemical resistance
TPU is a kind of strong polar polymer material. It has little affinity with non-polar mineral oil and is hardly eroded in fuel oil and mechanical oil. Among them, TPU products are resistant to oil in polyester series. Preferably.
9. Extensive applicability
TPU films can be vacuum or hot processed while still retaining their flexibility and performance. This material can also be welded into an irregular shape.
10. Environmentally degradable
TPU film does not produce air pollution when burned. It can be biodegraded in soil for 3-5 years. It is reported that the polyester series will be completely hydrolyzed by immersing in 50 degrees Celsius water for half a year or 70 degrees Celsius for 3 weeks or 100 degrees Celsius for 3-4 days.