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