Ultrasonic spot welding machine is widely used on welding belt of mask or respirator; velcro, handle of non-woven bags ... frequency20KHZFor width20-60MMWorking pressure0.1--0.5MPAProduct features:Suitable for welding non-woven bags, the use of pneumatic foot switch device ... ,PVC,ABS, and so on.Application:disposable mask ear-loop welding , non-woven fabric bag handles(shopping bags, handbags),etc ...