On the surface, there are obvious pressure points on both sides of the ptfe waterproof and breathable membrane. That is because the production process is through hot pressing and compounding. Please note that it is not the dot pattern of the non-woven fabric itself, but the obvious overlapping points. Pattern.
Tear off the waterproof and breathable film. First, the middle polymer layer should be a milky white and soft waterproof and breathable layer. Because it is compounded by hot pressing, there should be pressure points on this layer of film.
In addition, gently press the non-woven fabric and membrane with your hands. If there is a sticky feeling, you can conclude that it is adhered by hot melt glue, then this is a fake waterproof and breathable membrane.
Because the hot melt adhesive is adhered even at room temperature, the three layers of material will soon bubble and separate and peel off automatically.
We are a manufacturer specializing in the production of polytetrafluoroethylene membrane materials. Interested parties can enter the store and contact us.
</p
