Waterproof fabrics are fabrics that are, inherently, or have been treated to become, resistant to penetration by water and wetting.
We have two ways to achieve the waterproof fabric.
One is the fabric laminated waterproof membrane ,the other one is Coated fabric,such as PU and PVC,PE etc.
Membranes are thin films made from polymers. There are basically two types of membranes – microporous membranes (they’re hydrophobic) and hydrophilic membranes.
The memrbane have two Kernel argument.Waterproofness and breathability
Waterproofness 3000mm-20000mm
Breathable 500gsm/24hours-10000gsm/hours
This two data will show us the membrane quality is good or basic. TPU now is the widely use membrane,except this also have TPE,PU,PTFE etc.
