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ETPU Materials
MaterialsMaterials
ETPU, or Expanded Thermoplastic Polyurethane, is a high-performance foam material gaining prominence. Its unique structure, created by expanding TPU beads, results in exceptional elasticity and resilience. This translates to superior cushioning and energy return, making it ideal for applications requiring impact absorption.
Essentially, ETPU’s magic lies in its closed-cell structure. When compressed, these cells absorb energy, then rapidly spring back to their original shape. This property provides a dynamic, responsive feel, and ensures long-lasting performance even under repeated stress.
ETPU color selection
How Does ETPU Material Work
ETPU’s functionality stems from its unique expanded cellular structure. Here’s a how ETPU works:
Expanded Bead Structure:
- ETPU is created by expanding TPU beads using heat and pressure. This process forms a closed-cell foam, where each bead acts like a tiny, air-filled capsule.
- When pressure is applied, such as when a foot strikes the ground, these capsules compress, absorbing the impact energy.
- Upon release of pressure, the air-filled cells quickly return to their original shape, releasing the stored energy. This “spring-back” effect is what provides ETPU’s exceptional energy return.
Energy Return and Cushioning:
- The consistent and rapid compression and rebound of the ETPU beads result in high energy return, meaning a significant portion of the impact energy is returned to the user. This creates a responsive and “bouncy” feel.
- The closed-cell structure also provides excellent cushioning, as the air within the cells acts as a shock absorber, protecting joints and muscles from impact.
- This combination of energy return and cushioning is what makes ETPU so effective in applications like athletic footwear, where performance and comfort are crucial.
In essence, ETPU’s performance is driven by the interplay of its elastic material properties and its unique foam structure, enabling it to efficiently absorb and return energy while providing superior cushioning.
ETPU’s characteristics are very interesting for many applications such as automotive but it is especially appreciated as raw material for shoe soles.
✔ Low density and lightweight, as its cells are filled with air
✔ Shock impact absorption, thanks to its structure, with closed cells
✔ High elasticity and extremely high rebound effect with 55% more energy
✔ Outstanding resilience. It keeps its characteristics unchanged after long time and usage
✔ High abrasion resistance
✔ High tensile strength
✔ Chemical resistance to a great variety of substances.
✔ good long-term durability in a wide temperature range
✔ 100% recyclable
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Aishan Industrial Park, Jiaozhou City, QingdaoCity, Shandong province
+86 15153255642
market@qdmaifeng.com
All rights reserved by Qingdao Maifeng Industrial Technology.
All rights reserved by Qingdao Maifeng Industrial Technology.
