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Waterproof breathable membrane material fabric construction


Kunshan Xinzhenpin Film New Material Technology Co., Ltd. is an overall solution company dedicated to EPTFE film as the center, focusing on design, research and development, production, processing, technical support, testing equipment research and development, sales and design.
Xinzhenpin has a strong R&D and design team, which can provide customers with high-quality protective film products and sustainable improvement equipment R&D solutions. Customize modular protection products for customers. Xinzhenpin's products are mainly used in electronics, medical, automotive, packaging, small appliances, acoustics and other fields. Products include waterproof and breathable membranes, waterproof and sound-permeable membranes, breathable patches, breathable plugs, breathable caps, breathable gaskets and more. Xinzhenpin can provide relevant testing equipment and a complete set of independent research and development solutions and related equipment according to customer product needs. We hope to provide customers with high-quality products through high-quality services, continuous innovative solutions, and professional technology.
The development of waterproof and breathable membrane is also a gradual process. From the original waterproof glue that appeared to meet the waterproof requirements of shoes, clothing, and tents, to the PU film with stable waterproof but not perfect, to the improved TPU film developed on the basis of PU film, to the current waterproof and breathable film.

Material fabric structure of waterproof  breathable membrane:
The waterproof  breathable membrane has the functions of waterproof, breathable, thermal insulation, and the realization of these functions is determined by the structural material fabric of the waterproof and breathable membrane.
Construction principle: The waterproof and breathable membrane is composed of polymer materials + polyolefin microporous membrane + polymer materials through hot pressing. The technology is the first in China and advanced in the world. The polyolefin microporous membrane has excellent air permeability, and the product is durable and has a long service life. The polyolefin microporous membrane is not only anti-corrosion, acid and alkali resistance, but also has excellent elongation performance, and can rebound quickly after being pierced by a nail to increase the sealing performance. Its waterproof and breathable performance can make the water vapor in the room or in the insulation layer pass out, and after the water vapor condenses and condenses into water droplets, the water droplets will also be blocked outside the breathable membrane. Thereby ensuring the performance of the interior and buildings, but also thermal insulation. It is a new type of high-tech energy-saving and environmental protection material.

Its working principle is that the air-permeable working principle can be divided into two types: micropores and hydrophilic groups. Since the minimum diameter of water droplets is about 20 microns, while the diameter of water vapor molecules is only about 0.0004 microns, there is a huge difference in the diameters of the two. Water vapor can pass through the microporous membrane by the principle of diffusion, and the surface tension of liquid water or water droplets prevents water molecules from passing through, which prevents the penetration of water and makes the breathable membrane waterproof.

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