BAG BODY, BAG BODY MANUFACTURING APPARATUS MANUFACTURING BAG BODY, BOTTOM SEAL BAR USED FOR BAG BODY MANUFACTURING APPARATUS, AND METHOD FOR MANUFACTURING BAG BODY

摘要

PROBLEM TO BE SOLVED: To provide a bag body capable of reducing an adjustment amount of a position of a mountain fold line of a bottom film with respect to change in a position of an intersection point between an inside edge line of a side seal portion and an inside edge line of a bottom seal portion as much as possible.SOLUTION: A bag body has: a surface side film 11; a back side film 12; and a bottom film 13 which is folded into two and sandwiched between the surface side film 11 and the back side film 12. An inside edge line 26 of a bottom seal portion 25 has: a rising inclination line portion 261 rising from a central portion toward the outside in a width direction of a bottom film 13; and an inclination relaxation line portion 262 which continues into the rising inclination line portion 261. Inclination of a tangent in each point of the inclination relaxation line portion 262 is smaller than inclination of a tangent of a connection portion between the rising inclination line portion 261 and the inclination relaxation line portion 262. An inside edge line 22a of a side seal portion 21a has such a structure as to intersect with the inside edge line 26 of the bottom seal portion 25 on the inclination relaxation line portion 262.SELECTED DRAWING: Figure 7