Although the application of supercritical foam molding technology in the middle sole of running shoes has only a decade of history, its rapid popularity has become the "black technology" in the field of shoe materials, and gradually expanded from the high-end market to ordinary sports shoes.

Compared with traditional foaming technology using chemical additives, the supercritical fluid foaming technology makes sneakers lighter, more resilient, and more environmentally friendly.

The development of supercritical foaming technology and its application in the field of shoe materials demonstrate how advances in chemical technology can promote the development of society.

Key Performance Indicators (CTQs) for the midsole of sports shoes

Sports shoes are composed of three parts: upper, midsole and outsole. The midsole is responsible for providing cushioning and resilience, absorbing impact force, and ensuring comfortable wearing experience and protection.

The midsole is designed and manufactured to strict performance standards, and its performance is directly related to the comfort, support, cushioning and durability of the shoe. The midsole is the core of sports shoe technology, and its material and foam technology are the key to distinguish between major brands.

Shoe material performance requirements:

1. Cushioning performance: The material should have sufficient elasticity to effectively absorb the ground impact force and reduce the impact of the foot.

2. Supporting performance: The material needs to have sufficient strength and toughness to ensure that the midsole remains stable in various movements and prevents the foot from twisting or excessive pronation.

3. Anti-compressibility: to ensure the comfort of long-term movement.

4. Resilience: can be quickly restored to the original state after pressure, continue to provide cushioning effect.

5. Lightweight: The larger the foaming proportion of the foaming material, the smaller the material proportion, the lighter the shoes, and the more flexible and durable the movement.

6. Durability: The material should have a certain wear resistance.

7. Environmental resistance: The material should have high and low temperature resistance, hydrolysis resistance, outdoor aging resistance and detergent resistance.

Supercritical foaming technology, with its excellent performance in the manufacturing of athletic shoe midsole, is leading the technological innovation of the shoe material industry to provide consumers with a better sports experience.