US 11,655,089 B2
Spout-equipped packaging bag and manufacturing method therefor, and spout-equipped packaging bag that contains contents
Kazuhiro Umenaka, Fujimino (JP); and Raizo Kuge, Hanno (JP)
Assigned to HOSOKAWA YOKO CO., LTD., Tokyo (JP)
Appl. No. 16/623,510
Filed by HOSOKAWA YOKO CO., LTD., Tokyo (JP)
PCT Filed Jun. 7, 2018, PCT No. PCT/JP2018/021869
§ 371(c)(1), (2) Date Dec. 17, 2019,
PCT Pub. No. WO2018/235618, PCT Pub. Date Dec. 27, 2018.
Claims priority of application No. JP2017-122284 (JP), filed on Jun. 22, 2017.
Prior Publication US 2021/0147131 A1, May 20, 2021
Int. Cl. B65D 75/00 (2006.01); B65D 75/58 (2006.01); B65D 81/34 (2006.01)
CPC B65D 75/008 (2013.01) [B65D 75/5883 (2013.01); B65D 81/3461 (2013.01); B65D 2575/583 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A self-standing spout-equipped packaging bag, comprising:
a bag body that stores contents; and
a spout that is attached to an upper portion of the bag body,
wherein the bag body includes a tubular barrel portion, and a bottom portion which is attached to block an opening end of a lower part of the barrel portion,
wherein the spout includes a tubular nozzle portion, and a flange portion which projects from an outer surface of the nozzle portion,
wherein a shape of the flange portion in plane view has a polygonal shape formed of a plurality of sides or a shape in which at least one of a plurality of corners in a polygonal shape formed of a plurality of sides has an arc shape,
wherein the flange portion is inserted into an upper portion of the tubular barrel portion,
wherein an upper end part of the tubular barrel portion includes a plurality of parts corresponding to the plurality of sides of the flange portion, each of the plurality of parts of the upper end part is individually bent along each of the plurality of sides of the flange portion and is liquid-tightly adhered to an upper surface of the flange portion such that the upper end part of the tubular barrel portion follows the shape of the flange portion in plane view to be in the same shape,
wherein the barrel portion has a tubular shape with no side seal portion which projects outward in plane view,
wherein two side ends of a barrel member forming the barrel portion are caused to abut each other and an adhesive film overlaps inner surfaces of the two side ends, or an inner surface of one of two side ends of a barrel member forming the barrel portion and an outer surface of the other of the two side ends are adhered to each other,
wherein the barrel portion is configured to be changed into a flat shape including a front surface portion and a rear surface portion,
wherein one of the front and rear surface portions is provided with two first fold lines, the two first fold lines extend from two ends of one side of the flange portion to two side edges of the flat shape of the barrel portion, the one side of the flange portion extends in a width direction of the barrel portion, and each first fold line diagonally extends from one end of the one side of the flange portion to an outside in the width direction and the bottom portion of the bag body,
wherein the one of the front and rear surface portions is provided with a second fold line connecting intersection points between the two first fold lines and the two side edges, and
wherein a distance between each intersection point and the one side of the flange portion in an up-down direction of the barrel portion is half a distance between the one side and another side of the flange portion, and the one side and the other side are opposite to each other and extend in the width direction of the barrel portion.