This Bag Making Machine is suitable for hot-sealing & hot-cutting high-density polyethylene (HDPE) and low-density polyethylene (LDPE) plastic film. It adopts computer color code-tracking, hydraulic punch the "U" shape vest bag in one time, it is a special bag maker for producing vest bags. And with such features, such as easy operation and high finished products, so the production efficiency can be improved greatly.