backward folding meaning in English

背向褶皱作用

Impression nip is also avaiable with this unit . side a is the printed side . the impression cylinder is specially designed to prevent the carton form brusting due ti the forward and backward folding furing packing
本机可完成的压线， a面为印刷面，压线轮采用特殊设计使纸箱在包装过程中正反折也不会爆线。
Impreaaion nip is also available with this unit . side a is the printed side . the impression cylinder is specially designed to prevent the carton from bursting due to the forward and backward folding during packing
本机可完成的压线， a面为印刷面，压线轮采用特殊设计使纸箱在包装过程中正反折也不会爆线。