| ● | PU hydrophilic waterproof and moisture-permeable film is an environmentally friendly non-porous film made of polymer elastomer PU (polyurethane) as the main material. |
| ● | Waterproof and moisture-permeable principle: PU basic resin is a group of copolymers composed of hard and soft segments. The hard segment is a hydrophobic chemical bond, which can prevent water droplets from passing through and play a waterproof role. The soft segment is a hydrophilic chemical bond. Through the action of hydrophilic groups and water molecules, with the help of hydrogen bonds and other intermolecular forces, the water vapor is transferred from the side with high humidity to the side with high humidity by means of adsorption-diffusion-desorption. The side with low humidity can achieve the purpose of moisture permeability. |
| ● | This is a smart film. When the body temperature rises due to strenuous activity, the water vapor and body heat will be discharged through the Brownian motion. During low-level activities, the air permeability decreases to maintain body temperature. |
| Model | Colour | Thickness mm | Water pressuremmH2O （GB/T4744） | Breathable g/㎡·24h (JISL 1099A1) | Breathable g/㎡·24h (JISL 1099B1) | RET ㎡·Pa/W | Weight g/㎡ |
| HYP-GT15 | White, transparent | 0.015 | 15000 | 4500 | 115000 | 6.85 | 18±1 |
| HYP-GT20 | White, transparent | 0.020 | 15000 | 5000 | 125000 | 4.18 | 20±1 |
