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Introduction of Expanded TPU

Low density + High elasticity


ISOTHANE ETPU have light density and high elasticity even at -25°C. It even withstands prolonged and repeated compression without permanent deformation. ETPU (expanded thermoplastic polyurethane) offers a perfect combination of soft texture and great elasticity.


  • Super response : Rebound rate > 65%
  • Low density : Density : 100-200 kg/m3
  • Good performance at low temperature : High elasticity and softness even at -25°C.
  • Anti-yellowing : Anti-yellowing material, also have non-yellowing grade.
  • Good abrasion resistance : Very low abrasion.
  • High flexing endurance : Finished goods can bear up to 120,000 bends.
  • Low compression set : Compressed reply >90%
  • Eco-friendly material : All raw materials and processes are environmentally friendly.

What is the E-TPU foam beads

TPU material
TPU material
Foaming and expanding
ETPU foam particles
ETPU foam particles
Steam molding
The middle sole
The middle sole
Microsocopic cross section
Microsocopic cross section


Density (g/cm3) 0.15-0.25 0.02-0.06 0.01-0.03 0.03-0.06 0.2-0.7 0.02-0.4
Foam structure closed cell closed cell closed cell closed cell closed cell cell
Flexibility Excellent fair fair fair fair fair
Re-bound Excellent good poor fair fair fair
Low temperature resistance Excellent good good fair good fair
Izod Impact good Excellent poor Excellent fair good
Chemical resistance Excellent Excellent poor good good fair
Mechanical properties Excellent Excellent poor good fair poor
Weatherability Excellent Excellent poor fair fair fair
Abrasion resistance Excellent good poor good poor fair
Environmental friendly Excellent Excellent poor Excellent fair poor
Rating 5 5 3 4 2 2


Bicycle Seats

  • Elaston foam provides unrivalled comfort and support on longer runs.
  • Patented body geometry design to assure blood flow to sensitive arteries.

Footwear Materials

  • Compared with traditional shoe materials, ETPU Expended has environmentally friendly materials with light density and high elasticity , good abrasion resistance, and high flexing endurance.
  • ISOTHANE ETPU material is suitable for use on the soles and insoles of sports shoes, because the ETPU can absorb the impact of the ground on the soles of the feet and effectively protect our knees and heels, making each step light and elastic.
  • The ETPU foam material developed by Dadong Resin is available in various sizes and sizes to meet the needs of various complex designs. It is the latest environmentally friendly choice for shoe materials.
  • proimages/products/p13-5_Footwear-00(500x250).jpg
  • proimages/products/p13-5_Footwear-02(250x250).jpgproimages/products/p13-5_Footwear-03(250x250).jpg

Product SpecificationsProduct FeatureBulk density(kg/m3)Pellet size(mm)
6310AM Made from ether type thermoplastic polyurethane (TPU) with excellent hydrolysis resistance, good rebound (<60%). 100±25 2~4/5~8
6315AM 150±25
6310BM Made from ether type thermoplastic polyurethane (TPU) with excellent hydrolysis resistance, low compression set. 100±25 2~4/5~8
6315BM 150±25
6310EM Made from ether type thermoplastic polyurethane (TPU) with excellent hydrolysis resistance, low hardness , good elasticity (> 65%). 100±25 2~4/5~8
6315EM 150±25
6110BM Made from ester type thermoplastic polyurethane (TPU) with better material strength, low compression set and competitive price. 100±25 2~4/5~8
6115BM 150±25

* Note: These figures are for reference only. We're happy to customize products according to your specifications.