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Material and fabric construction of waterproof breathable membrane


Kunshan Xinzhenpin Film New Material Technology Co., Ltd. is an integrated solution company dedicated to EPTFE film as the center, focusing on design, research and development, production, processing, technical support, testing equipment research and development and sales design.
Xinzhenpin has a strong R&D and design team, which can provide customers with high-quality protective film products and equipment R&D solutions for sustainable improvement. Customize modular protection products for customers. Our products are mainly used in electronics, medical, automobile, packaging, small household appliances, acoustics and other fields. Products include waterproof breathable film,Waterproof and sound permeable membrane, breathable patch, breathable plug, breathable cap, breathable gasket, etc. "Xinzhenpin" can provide relevant testing equipment, a complete set of independent research and development programs and relevant equipment according to customer product requirements. We hope to provide customers with better quality products through high-quality services, continuous innovative solutions and professional technology.
The development of waterproof breathable membrane is also a gradual process. Waterproof glue started to appear to meet the waterproof requirements of shoes, clothing and tents, To PU film with stable but imperfect waterproof property ,TPU membrane developed on the basis of PU membrane has been improved to the current waterproof and breathable membrane.
Material and fabric structure of waterproof breathable membrane:
The waterproof and breathable membrane has the functions of waterproof, breathable, thermal insulation, and the realization of these functions is determined by the structural material and fabric of the waterproof and breathable membrane.
Construction principle: The waterproof and breathable membrane is made of polymer material+polyolefin microporous membrane+polymer material by hot pressing, The process is the first in China and internationally advanced. The polyolefin microporous membrane has good ventilation function, and the product is durable and has long service life. The polyolefin microporous membrane is not only corrosion resistant, acid and alkali resistant, but also has excellent extensibility. After the nail is punctured, it can rebound quickly to increase the sealing performance. Its waterproof and breathable performance can make the water vapor in the room or in the insulation layer penetrate, and after the water vapor condenses and forms water droplets, the water droplets will also be blocked outside the breathable membrane. Thus, the performance of indoor and building can be guaranteed, and thermal insulation can be achieved. It is a new high-tech energy-saving and environmental protection material.
Its working principle is that the working principle of air permeability can be divided into microporous and hydrophilic groups. Because 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 between the diameters of the two. Water vapor can pass through the microporous membrane through the diffusion principle. Liquid water or water droplets cannot pass through the water molecules due to their surface tension, Therefore, water penetration is prevented and the breathable membrane has waterproof function.
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