Container with zipper tape, method for manufacturing container with zipper tape, and device for manufacturing container with zipper tape

A method of manufacturing a container provided with a zipper tape, the method comprising:

• feeding a zipper tape including a first base strip, a second base strip, a first engagement portion, and a second engagement portion, the first engagement portion and the second engagement portion respectively protruding from the first base strip and the second base strip and being engageable with each other;
• bonding the first base strip and the second base strip respectively to a first area and a second area of a film that are opposed to each other;
• forming a container body by cutting the film;
• and
• forming a hinge at at least one position that satisfies m/n<0.25, where “n” represents a length of an opening portion of the container body, and “m” represents a distance from the hinge to an inner end portion of the opening portion in a longitudinal direction of the zipper tape.

A device of manufacturing a container provided with a zipper tape, the device comprising:

• a unit configured to feed a zipper tape including a first base strip, a second base strip, a first engagement portion, and a second engagement portion, the first engagement portion and the second engagement portion respectively protruding from the first base strip and the second base strip and being engageable with each other;
• a unit configured to bond the first base strip and the second base strip respectively to a first area and a second area of a film that are opposed to each other;
• a unit configured to form a container body by cutting the film;
• and
• a unit configured to form a hinge at at least one position that satisfies m/n<0.25, where “n” represents a length of an opening portion of the container body, and “m” represents a distance from the hinge to an inner end portion of the opening portion in a longitudinal direction of the zipper tape.