... functions of making D-cut/patch bag,flat bag,shoe bag,vest bag,box type bag automatically. Nonwoven bag making machine CharacteristicsThis machine is ... ultrasonic heat sealing principle. It have functions like hem in bag orifice, punching, ultrasonic heat sealing, cold cutting, etc. ... for all kinds of non-woven fabrics handle shopping bag, shoes bag, haversack as 25-100g.Technical parameter:ModelJT-500 ...