This machine integrates the functions of No.1-7 western style envelopes and No.1-9 Chinese style envelopes , automatic envelope tongue pre-coated gluing,folding and sealing. It’s characterized by an air-suction roller decelerating device for overlapping.It’s provided with electrothermal control baking system.The above mentioned advanced technologies avoid the defect such as overlapping unstable and the second positioning uncorrectable.It also adopts the structure of flatness. Its strong points are easy adjustment, high efficiency and low consumption and so on.It is the perfect equipment for processing the pre-coated glue envelopes and paper bags.