Packaging bag and manufacturing system thereof

Abstract

The present invention provides a manufacturing system of a packaging bag with excellent manufacturing efficiency. According to the present invention, provided is a manufacturing system of a packaging bag, including: a film supply device; a conveying device; a bottom insertion device; a bottom sealing device; a transverse sealing device; and a cutoff device, wherein the film supply device supplies a front surface long film and a back surface long film facing each other, the conveying device is configured to convey the front surface long film and the back surface long film, the bottom insertion device, the bottom sealing device, the transverse sealing device, and the cutoff device are arranged in this order along a conveyance direction, the bottom insertion device is configured to start inserting a bottom long film between the front surface long film and the back surface long film at an insertion start position and to complete insertion of the bottom long film at an insertion completion position downstream from the insertion start position, the bottom sealing device is configured to weld the bottom long film to the front surface long film and to the back surface long film, the transverse sealing device forms a transverse seal portion extending in a direction perpendicular to the conveyance direction so as to weld the front surface long film and the back surface long film to each other, and the cutoff device cuts off the front surface long film, the back surface long film, and the bottom long film along the transverse seal portion.

Dependencies are inferred from the claim text.