HP-250D full automatic pocket envelope making machine is suitable for producing pocket envelope, open-end envelope and similar paper bag. The seam of envelope can be made at the middle or at the side, besides the small flap can be under the big flap, or above the big flap.

It is characterized by Reliable sheet separation of the air-suction bottom feeding system, Customer can feed blank envelope with no-stop. Then it provides the folder structure with the air-suction barrier for the stable and rapid performance. Rotary gluing structure ensures the evenly gluing, At the end, counting structure for finished envelopes.