ZF-250B automatic Chinese envelope machine, as one of the important specifications of the series, is mainly

 used for processing large and medium-sized envelopes, like our other models of envelope machines. 

HP-250B automatic envelope (flat bag) machine has the advantages of high production efficiency, stable

 performance, quick and convenient adjustment and operation, compact structure and small floor space. 

The design of this model also gives special consideration to the needs of thick paper processing. The 

air-absorbing paper feeding mechanism at the bottom of the pile is reliable, and the paper can be refilled 

without stopping. The fence positioning folding mechanism with air-absorbing roller is stable at high speed

 and accurate folding. The width of envelope (paper bag) can be adjusted without stopping, and the rotating

 sizing mechanism can ensure even sizing and easy cleaning.