Application of TPU breathable waterproof membrane in outdoor jackets

TPU breathable waterproof membrane is a thermoplastic polyurethane elastomer film that plays an important role in the field of outdoor jackets. Its molecular structure contains a large number of hydrophilic groups. When the human body produces sweat during exercise, the humidity and temperature difference between the inside and outside of the membrane will drive water vapor molecules to migrate from the high-concentration side to the low-concentration side along the hydrophilic chain segments, thereby achieving breathable and moisture-removing functions. At the same time, the dense structure of the TPU membrane can effectively block the penetration of liquid water, and it can maintain good waterproof performance even in heavy rain environments. The waterproof index can usually reach thousands of millimeters of water column or more.

In the practical application of jackets, TPU membranes are generally combined with fabrics through a lamination process to form waterproof and breathable fabrics. This kind of fabric has three core functions: windproof, waterproof, and breathable. During high-intensity outdoor activities such as mountain climbing, hiking, and skiing, the wearer will not be affected by rain or snow, but it can also discharge moisture from the body in a timely manner, avoid stuffy heat and condensation, and keep the body dry and comfortable.

Compared with traditional coating processes, TPU films have better hydrolysis resistance, low temperature resistance and elasticity. They are not easily damaged after repeated folding and stretching, and are more durable. In addition, TPU materials are environmentally friendly, non-toxic, recyclable and in line with the concept of sustainable development. With the continuous advancement of technology, the thickness of TPU membrane continues to decrease, and the moisture permeability gradually increases, providing strong support for the lightweight and functionalization of jackets, and has become one of the important materials in waterproof and breathable solutions for outdoor clothing.