This machine is specially designed for the envelope with pre-coated glue on the envelope tongue. It adopts an air-suction bottom feeding system to pile paper,detach paper through blowing air and non-stop feeding of paper.It’s provided with an air-suction big roller to overlap automatically. No-degree shifting regulates overlapping width ensuring convenient and reliable.The roller automatically applies glue so as to ensure the even applies glue. It  also adopts electrothermal and automatical control baking system ensuring paper dry and flat.It is the best equipment for pre-coated glue of paper at home currently.