工作原理是利用高频率振荡由焊头将声波传送至工作物熔接面，瞬间使工作物分子产生摩擦，达到塑料熔点，从而完成固体材料迅速溶解，可对纺织品进行整洁焊接，粘固力强，以无纺布为原材料，全自动化生产，操作简便。全自动无纺布制袋机是由给料机实期送粉料（胶体或液体）到包装机上方的料斗 器内，引进速度由光电定位装置控制，成卷的封口纸（或其它包装材料）经导辊带动引进至翻领成型器，被折弯后再由纵封器搭接成为圆筒状，物料被自动计量后充填到制成的袋内，横封器在进行热封切割的同时将袋筒间歇地向下牵引，最后形成搭接纵缝三面封口扁平袋，完成一个袋的封口。
The working principle is the use of high frequency oscillation by sound waves transmitted to the work head welding surface, instantly making the work from molecular friction, achieve plastic melting point, thus completing the solid material can be dissolved quickly, clean welding of textiles, cement, non-woven fabrics as raw materials, fully automated production, simple operation. Automatic non-woven bag making machine is composed of a solid powder material feeder period (colloidal or liquid) to the hopper is at the top of the packaging machine, the introduction of speed by the photoelectric positioning device control, into the sealing paper roll (or other packaging materials) by introduction to drive Lapel Shaper guide roller is bent again by the vertical sealing device lap become cylindrical material is made into automatic metering filling bag, transverse sealing device in heat sealing and cutting the bag intermittently downward traction, finally formed three side sealing bag flat lapped seam, a complete sealing bag.