The PTFE filter bags are sewn using a 100% PTFE sewing thread at a linear density of 1200 den. The thread strength is greater than 38N. Not less than three longitudinal sutures of the filter bag, not less than four sockets of the ring-shaped suture; bag suture at the bottom of the ring not less than two traces, and all the sutures parallel and firm, the suture width of 10- 20mm, bag suture needle within 100mm ≥ 25 needle. Bag filter bag bottom and pocket reinforcement layer ≥ 100mm bag mouth with 301 # stainless steel spring ring.

100% PTFE filter bag