1: According to the material, it can be divided into: a. Pure kraft paper bag; b. Paper aluminum composite kraft paper bag (kraft paper composite aluminum foil); c: Woven bag composite kraft paper bag (generally larger bags).
2: According to the bag type, it can be divided into: a. Three-side sealing kraft paper bag; b. Side organ kraft paper bag; c. Self-supporting kraft paper bag; d. Zipper kraft paper bag; e. Self-supporting zipper kraft paper bag.
3: According to the appearance of the bag, it can be divided into: a. Valve bag; b. Square bottom bag; c. Seam bottom bag; d. Heat sealing bag; e. Heat sealing square bottom bag.
