Our patent product rolling-column style 6 shuttles plastic circular loom(patent No.ZL02208338.3),is a new class machine which produces PP woven bags based on 4 shuttles circular loom. 6 shuttles replace four shuttles. Palm circle replaces palm belt. It can stop automatically while the warp or weft is broken though changing the fittings of warp system. its characters: promote 60% of the speed, save 50% of manpower, material and maintenance fees;reduce the covering area etc., promote over USD500 production profits each machine per month. Many authoritative persons state with certainty: Type SBY-750-6G rolling-column style 6 shuttles plastic circular loom will replace 4 shuttles plastic circular loom and become the main current equipment which produces PP woven bags.