Side organization distinction:
　　 From the edge of the side tissue, twist the side line to distinguish:
　　1) Usually, the polyester-cotton thread is a rapier (locking device), and the filament is air-jet weaving (planetary gear device).
　　2) Air-jet double-split fabric, one side is thread and the other side is filament. (The center is a seaming device, and the two sides are equipped with planetary gears)
　　3) Rapier double-split fabric, both sides of yarn are polyester cotton thread (both are seaming devices).
　　 loom classification
　　Rapier loom: Use rigid or flexible rapier heads, belts to clamp and guide the weft. In addition to being suitable for weaving plain and textured fabrics, rapier looms are characterized by easy color change, suitable for multi-color weft fabrics, and suitable for the production of yarn-dyed, double-layered fleece fabrics, loop fabrics and decorative fabrics.
　　 Air-jet loom: The weft yarn is drawn by the compressed air jet, and the weft yarn is brought through the shed. The biggest feature of the air jet loom is fast speed and high labor productivity. It is suitable for plain and textured fabrics, fine extra-high-density fabrics and bulk fabrics.
　　Gray cloth advantages and disadvantages
　　1. Air jets generally produce more fine-count yarns, with higher grades, mainly light and thin fabrics; rapier machines generally have more coarse yarns with lower grades, mainly heavy fabrics.
　　 2. From the point of view of equipment, jet and rapier are nothing more than weft insertion.
3. Weaving grey cloth of the same organization, the raw material cost is the same, the weaving cost is low, such as twill, the jet speed can reach more than 800 revolutions, the arrow shaft is only about 180-200 revolutions, and the air jet blocker can look at 10-12 units per person. Up to 4-6 arrow shafts.
　　 common and opposite
　　Commonity: all are raw edges, can be the same specification
　　 Opposite sex: under the premise of the same yarn count and specifications
　　①The jet weight is slightly lighter. ②The flatness of air-jet plain grey cloth is better than that of rapier production. ③The fabric shrinkage rate of the air-jet loom will be larger accordingly. ④The quality of air jet yarn is better than that of rapier.