microporous film application

Advanced Breathable Waterproof Material for Functional Applications

Microporous film is a high-performance membrane material characterized by a dense network of micro-sized pores. These microscopic pores—typically in the micrometer range—are engineered to allow air and water vapor to pass through while effectively blocking liquid water. This dual functionality makes microporous films ideal for applications where comfort, protection, and breathability must coexist.

Dual-Performance: Breathable and Waterproof

‧ Breathability

The microporous structure enables vapor and air to escape freely, helping regulate body temperature and humidity, which minimizes heat buildup and improves comfort.

‧ Waterproofing

While allowing vapor to pass, the pores are too small for water droplets to penetrate, ensuring reliable water resistance even under extended exposure to rain or moisture.

‧ Lightweight & Flexible

Microporous films are thin, soft, and lightweight, making them an excellent choice for laminating onto nonwovens or fabrics used in rainwear, sportswear, and outdoor equipment.

‧ Wind Resistance

The tight structure also offers a natural barrier against wind, helping retain warmth without sacrificing ventilation.

Common Applications

Manufacturing & Customization Options

KAE HWA’s microporous film can be manufactured through advanced techniques such as:

• Stretching technology for uniform pore distribution

• Chemical foaming for controlled porosity

• Lamination with nonwoven substrates for enhanced mechanical strength

We offer a wide range of custom options:

• Film thickness and pore density

• Surface finishes (e.g., embossing, printing, coloring)

• Functional properties such as UV resistance, antistatic, or flame retardancy