How to improve the breathability of raincoat TPU film

The method of improving the breathability of raincoat TPU films mainly depends on the structure and design of the material itself. TPU (thermoplastic polyurethane) is a synthetic material with good elasticity and breathability. It achieves breathability through a microporous structure. These micropores allow air molecules to pass through, while water molecules cannot pass through due to their larger volume and surface tension, thus achieving the dual functions of waterproofing and breathability.

In order to improve breathability, it can be optimized in the following ways:

1. Micropore size adjustment: By adjusting the size and distribution of micropores in the TPU film, the breathability performance can be controlled. Smaller pores increase water resistance, while larger pores increase breathability.

2. Film thickness: The thickness of the film also affects breathability. Thinner TPU films usually have better breathability because air molecules can penetrate more easily.

3. Structural design: By designing special structures, such as honeycomb or mesh structures, the surface area of ​​the film can be increased, thereby improving breathability.

4. Material composite: Compounding the TPU film with other materials with good breathability can further improve the overall breathability.

5. Surface treatment: Special treatments on the surface of the TPU film, such as coating or printing, can also improve breathability.

Through these methods, the breathability of the TPU film is improved, allowing the wearer to feel more comfortable and reduce the stuffiness when wearing a raincoat.