... threadThe weakest point of filter bag is the sewing thread, which Linflon® sewing thread is a “loyal partner” of filter bag due ... made into special reinforced type according to the requirement. Sewing thread:1400dtex(1200-1300den) Breaking strength : >33N, Elongation: 5%, Continuous ... on our website do you need? PTFE fiber, PTFE Sewing thread, PTFE membrane or dust filter cloth and dust filter bag ...