... Description Model SKZW-A35K Ultrasonic Two-PE Paper Bowl Forming Machine is an automatic machine with multi-working station, which has the function ... running a whole procedure of automatic pre-printed-fan-shape-paper feeding, two-step pre-heating, bowl-side-body sealing( ... lubricating(for top curling), bottom punching, two-step bottom heating, bottom pre-folding, bottom knurling, top curling and bowl ...