ETPU is the abbreviation of “Expanded Thermoplastic Polyurethane”, which is a foamed thermoplastic polyurethane granule and is a product processed from thermoplastic polyurethane elastomer (TPU). Due to its structure resembling popcorn, people also call it ” TPU Popcorn ” .
ETPU is a new type of foaming material with excellent performance. It retains the excellent properties of TPU materials and also has excellent wear resistance, high mechanical strength, high resilience, resistance to bending and folding, hydrolysis resistance, oil resistance, low yellowing, and small permanent compression deformation.
Products made of ETPU material are soft, lightweight, and breathable, making it a new type of material in the high-end shoe material field. In addition, it has a very broad application prospect in shock absorption, packaging, automotive interiors, sports equipment, children’s toys, insulation and other fields.
We use physical foaming method and supercritical fluid technology to expand the thermoplastic polyurethane material. By changing the temperature and pressure, the equilibrium state of the polymer/gas homogeneous system inside the material is destroyed, and bubble nuclei are formed and grow inside the material to form foamed polyurethane material. After foaming, TPU particles can expand to 5-8 times their original volume like popcorn, with a large number of closed pores ranging in diameter from 30 to 300 microns. These closed pores can give the foamed particles excellent resilience.
Product Features
Ultra-light Density: Particles of 0.15-0.25g/cm3 can be prepared.
High Wear Resistance: The wear test value is lower than 53mm3
Anti-yellowing grade ≥4 level
High Bending Resistance ≥120,000 times
Low Temperature Resistance: Product keep good rebound performance under -20℃
High Rebound Performance: Up to 60%
Environmental Friendly: Entire process are environmentally friendly
Comparison Of Different Foam Materials << Read More >>
*The above data is for reference only, please refer to the actual data for accuracy.
Use Market
In addition to being widely used in the footwear industry, E-TPU materials can also be applied to tracks, helmets, packaging materials, and automotive interiors.
These closed air bubbles can endow foaming particles with excellent ultra-low density, high resilience, and flexibility. By using the steam molding process to process the foaming particles into the desired shape of the product, the outermost layer of the foaming particles is slightly melted and adhered into a stable shape during this process, while the internal pore structure is not affected. When the product is a sole, the sole can be compressed to half its size under pressure, greatly reducing the shock absorbed by the sole. After the compression force disappears, the sole can quickly rebound and recover to its original shape.
According to calculations, if the weight of a car is reduced by 10%, the corresponding fuel consumption can be reduced by 6%-8%, and the carbon dioxide emissions can be reduced by 5%-6%. Therefore, lightweighting of cars has become a trend in energy conservation and emission reduction. In recent years, with the continuous expansion of the E-TPU market, the application fields of E-TPU have also gradually increased. It can be used for car external seat covers and car seat cushions. The related products using E-TPU are durable.
ETPU material and its processing are environmentally friendly, ensuring a safer recreational environment. It has a gentle and elastic touch, lightweight and breathable, creating a comfortable sports space. Composed of independent inflatable particles, it has excellent shock absorption and energy return effects, greatly reducing the risk of falls during exercise, and also protecting the knees, wrists, and ligaments.
ETPU (thermoplastic polyurethane elastomer) is a thermoplastic elastomer material composed of polyether polyols and polyisocyanates. Here are the advantages and …
BEST
These closed air bubbles can endow foaming particles with excellent ultra-low density, high resilience, and flexibility. By using the steam molding process to process the foaming particles into the desired shape of the product, the outermost layer of the foaming particles is slightly melted and adhered into a stable shape during this process, while the internal pore structure is not affected. When the product is a sole, the sole can be compressed to half its size under pressure, greatly reducing the shock absorbed by the sole. After the compression force disappears, the sole can quickly rebound and recover to its original shape. 
According to calculations, if the weight of a car is reduced by 10%, the corresponding fuel consumption can be reduced by 6%-8%, and the carbon dioxide emissions can be reduced by 5%-6%. Therefore, lightweighting of cars has become a trend in energy conservation and emission reduction. In recent years, with the continuous expansion of the E-TPU market, the application fields of E-TPU have also gradually increased. It can be used for car external seat covers and car seat cushions. The related products using E-TPU are durable. 
ETPU playground trak has many advantages.
ETPU material and its processing are environmentally friendly, ensuring a safer recreational environment. It has a gentle and elastic touch, lightweight and breathable, creating a comfortable sports space. Composed of independent inflatable particles, it has excellent shock absorption and energy return effects, greatly reducing the risk of falls during exercise, and also protecting the knees, wrists, and ligaments. 
ETPU Bicycle Saddle
ETPU Colored Midsole
E-TPU Ground runway
E-TPU shoe insole
E-TPU heightening-insole
ETPU pet ball
E-TPU Robot dog cushioned soles
E-TPU Tyre
ETPU Foam helmet
E-TPU Bike Seat Cushion
TPU Popcorn Toy Plane
TPU Foam Popcorn Color Runway
