PTFE sewing threads are made up of 3 PTFE round filaments. These filaments are manufactured using the paste extrusion process and exhibit outstanding physical characteristics. Especially we can supply threads with linear density of 1350dtex(1200D) and high continuous length of 7500 meters. Besides, other threads with various linear densities (1650dtex/1500D, 2000dtex/1800D and 2650dtex/2400D) are also manufactured to enhance the stitching points in the top and bottom of filter bags.