Currently, the most environmentally friendly bag is woven bags, and now the most used is ultrasonic welding machine woven. 
 How it works: is the use of high frequency oscillation by the sound waves sent to the welding head to weld the work material surface, and instantly make the work of friction molecules to reach the melting point of plastic, thus completing the rapid dissolution of solid materials to complete the welding. Strength of its junction with close to a piece of raw material, as long as the products designed to match the joints, completely sealed is absolutely no problem. 

 Contrast to the traditional cable stitch needle, has the following advantages: 

 1, the use of ultrasonic welding, with a needle-free, eliminating the trouble of frequent needle exchange, no disconnection of traditional suture joint conditions, but also on the local textiles and clean cut and sealed. Suture at the same time also played a decorative role, strong cement, waterproofing effect can be achieved, embossed clear, even with a three-dimensional surface relief effect, work fast, more effective high-end beauty products; quality is guaranteed. 

 2, the use of ultrasound and a special drum processing, and seal the edges do not crack, not to hurt the fabric edges and no edges, curling phenomenon. 

 3, no warm-up time of manufacture, and continuous operation. 

 4, simple, and the traditional method of sewing machine operation is not much difference between an ordinary sewing can operate 

 5, low cost, than the traditional 5 to 6 times the machine is coming, and high efficiency.