1. 100% PTFE substrate is made of 450den(500dtex) filament fiber (yarn) using the plain weave. Warp and weft density of fabric can be designed according to the requirement of the filtrationmedium. For example,warp:140 threads/10cm, weft:140 thrads/10cm(140g/m2). Warp and weft strength: above 1000N. 2.
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