What are the Properties of Teflon Garment Film?

Teflon garment film is made of polytetrafluoroethylene as raw material, using a special process, calendaring, extrusion, biaxial stretching and other methods to make a micro porous film. And then compound it in various specifications by means of viscose Teflon composite fabric that is formed on the textile fabric. The fabric has the special effects of being waterproof, breathable, windproof and warm. Its performance is shown as follows:

1. Waterproofness

Waterproof means that the water on the outside of the fabric will not penetrate the fabric and soak into the inside. The PTFE laminate composite fabric is still waterproof even under the pressure of 80lb/m2. Wearing this fabric clothing, even if you are standing in the storm and sitting on the wet surface, people will not feel wet. The reason why the fabric garment has such a magical function is mainly because the pore size of the micro porous membrane of the main PTFE membrane of the fabric is 1/5000-1/20000 of the diameter of water droplets, so even the smallest raindrops cannot pass through.

2. Moisture permeability:

The porosity of the PTFE membrane is as high as 80%, the average pore diameter is 0.2μm. The pore diameter is 700 times larger than that of water vapor molecules, and water vapor molecules can pass freely.

3. Windproofness

During the stretching process of the PTFE film, a micro porous structure connecting nodes and countless microfibers is formed, and pores are formed between the microfibers. The pores penetrate each other to form a unique network structure. Wind cannot pass directly, and it will change direction and fold back when it encounters barriers, effectively preventing air penetration. Thus, it has excellent wind resistance.

4. Thermal insulation property

The breathable insulation membrane has excellent moisture permeability, which can transmit the steam discharged from the human body to the outside of the microclimate in time, prevent the water vapor from condensing into liquid water, and reduce the possibility of water conduction heat. Although the surface of the membrane is densely packed with a large number of micro porous membranes, the wind cannot penetrate, effectively preventing air convection. Tests show that in a strong wind of 25m/s, the thermal insulation effect of PTFE composite fabric is 30-40% higher than that of traditional down jackets.