The SBH series roll fed square bottom paper bag machine is designed to manufacture square bottom paper bags from paper roll in blank or printed designs. Side gluing, tube forming, tube cutting, bottom creasing, bottom gluing, bottom forming and final product out feed can all be completed in a single run, making this ideal equipment for food bags, shopping bags and other common paper bags.

Sunhope is the first company in China to design and produce a servo die cutting unit and servo window patching unit, both of which have been added to the SBH150B, and SBH330 machines to produce square bottom paper bag, see-through window bag, window bag with full film laminating, and two ply paper bag inline.