Bag container

Abstract

A bag container includes a synthetic-resin container body shaped by using a mold and including a body portion including a bottom portion and a spout-forming portion. A spout is formed by tearing an easy-to-tear portion of the spout-forming portion and removing a to-be-torn-off portion. The spout-forming portion is provided projecting upward, perpendicular to a placing surface formed by the bottom portion, from the body portion. An opening tab piece including an engagement hole with which the ball of a finger is to engage is provided projecting on one side of the spout-forming portion. The engagement hole has a shape that guides the finger such that, when the easy-to-tear portion is to be torn, the ball of the finger engages with a circumferential edge portion of the engagement hole from the inner side thereof while being oriented toward the circumferential direction centering about an end of the easy-to-tear portion.

1 . A bag container comprising a container body shaped by using a mold, the container body being made of synthetic resin and having a body portion including a bottom portion and a spout-forming portion, a spout being formed by tearing an easy-to-tear portion of the spout-forming portion to tear off a to-be-torn-off portion thereof, wherein:
 the spout-forming portion has a central axis that is perpendicular or substantially perpendicular to a placing surface formed by the bottom portion, and is provided projecting upward from the body portion;   an opening tab portion is provided on the to-be-torn-off portion, the opening tab portion projecting on one side, with respect to the central axis of the spout-forming portion, toward a side surface of the body portion, the opening tab portion having an engagement hole or an engagement depression with which the ball of a finger is to engage; and   the engagement hole or the engagement depression has a shape that guides the finger in such a manner that, when the easy-to-tear portion is to be torn, the ball of the finger engages with a circumferential edge portion of the engagement hole or the engagement depression while being oriented toward a substantially circumferential direction centering about an end of the easy-to-tear portion located on an opposite side, with respect to the central axis, from the side toward which the opening tab portion projects.   
     
     
         2 . The bag container according to  claim 1 , wherein the opening tab portion is provided projecting obliquely upward at an angle of inclination of 5 to 35 degrees with respect to a plane on which the easy-to-tear portion is formed. 
     
     
         3 . The bag container according to  claim 1 , wherein the engagement hole or the engagement depression has an elliptical shape, and a direction of a minor axis of the ellipse is provided along the circumferential direction centering about the end of the easy-to-tear portion. 
     
     
         4 . The bag container according to  claim 1 , wherein a holding tab portion is provided on a shoulder of the body portion adjacent to the spout-forming portion on the side toward which the opening tab portion projects, the holding tab portion projecting upward while being spaced apart from the spout-forming portion. 
     
     
         5 . The bag container according to  claim 4 , wherein the holding tab portion is provided in such a manner that a central axis thereof is arranged parallel to or substantially parallel to the central axis of the spout-forming portion. 
     
     
         6 . The bag container according to  claim 4 , wherein the opening tab portion and the holding tab portion are provided within a plane along a parting line of the mold for the shaping. 
     
     
         7 . The bag container according to  claim 1 , wherein:
 the to-be-torn-off portion is provided with a flat-shaped dome portion having a cavity inside;   the opening tab portion is provided projecting on one side, with respect to the central axis of the spout-forming portion, toward the side surface of the body portion and is provided in a connected manner to a top surface of the dome portion; and   a portion of the opening tab portion that is provided in a connected manner to the top surface of the dome portion constitutes a connection base portion having a cavity portion.   
     
     
         8 . The bag container according to  claim 7 , wherein a height of the dome portion in a projecting direction of the spout-forming portion is 20% to 80% of a minimum width of the dome portion in a direction orthogonal to the projecting direction. 
     
     
         9 . The bag container according to  claim 1 , wherein the easy-to-tear portion has a narrow groove-like depression formed annularly around the spout-forming portion.