Packaging Bag and Method of Producing the Same

Abstract

Provided is a packaging bag including a notch being formed in the edge seal portion, the notch serving as a starting point for opening of the bag body, and an easy-to-cut portion disposed on an extension of the notch in an opening direction. The easy-to-cut portion is formed to extend beyond the back seal portion between one side and the other side of the back seal portion, and the ends of the easy-to-cut portion are disposed away from side ends of the bag body, respectively.

1 . A packaging bag comprising a bag body containing a content, wherein
 the bag body comprises:   a back seal portion formed by sealing a film in a length direction and disposed on a back surface;   a pair of end seal portions formed by sealing the film in a width direction and disposed on ends in a length direction;   an edge seal portion formed by sealing the film and disposed on one side end;   a notch being formed in the edge seal portion, the notch serving as a starting point for opening of the bag body; and   an easy-to-cut portion disposed on an extension of the notch in an opening direction,   the easy-to-cut portion being formed to extend beyond the back seal portion between one side and the other side of the back seal portion, and   the ends of the easy-to-cut portion being disposed away from side ends of the bag body, respectively.   
     
     
         2 . The packaging bag according to  claim 1 , wherein each of the ends of the easy-to-cut portion is disposed 10 to 25 mm away from a corresponding one of the side ends of the bag body. 
     
     
         3 . The packaging bag according to  claim 2 , wherein each of the ends of the easy-to-cut portion is disposed 10 to 15 mm away from a corresponding one of the side ends of the bag body. 
     
     
         4 . The packaging bag according to  claim 1 , wherein each of the ends of the easy-to-cut portion is disposed at a distance of 14 to 36% of a width dimension of the bag body away from a corresponding one of the side ends of the bag body. 
     
     
         5 . The packaging bag according to  claim 2 , wherein each of the ends of the easy-to-cut portion is disposed at a distance of 14 to 21% of a width dimension of the bag body away from a corresponding one of the side ends of the bag body. 
     
     
         6 . The packaging bag according to  claim 1 , wherein the back seal portion is formed by sealing both side edges of the film in a length direction and is folded at a proximal end of the back seal portion such that a distal end of the back seal portion faces the other side of the bag body. 
     
     
         7 . The packaging bag according to  claim 1 , wherein the edge seal portion is disposed along a length direction of the bag body from one of the pair of end seal portions and is disposed to overlap the easy-to-cut portion in the width direction of the bag body. 
     
     
         8 . The packaging bag according to  claim 1 , wherein
 the easy-to-cut portion is formed in a rectangular shape, and   the notch is disposed at a central portion of the easy-to-cut portion in a length direction of the bag body.   
     
     
         9 . A method of producing the packaging bag according to  claim 1 , comprising:
 forming the back seal portion by sealing both side edges of a film having a band shape in a length direction to form the film into a cylindrical shape; and   forming the pair of end seal portions by sealing in a width direction the film having a cylindrical shape to form the film into a bag shape,   wherein the film includes the easy-to-cut portion formed on both side ends such that the easy-to-cut portion is formed to extend beyond the back seal portion between one side and the other side of the back seal portion.   
     
     
         10 . A packaging bag comprising a bag body containing a content, wherein the bag body has opposing side ends and wherein the bag body comprises:
 a) a back seal portion formed by sealing a film in a length direction and disposed on a back surface, wherein the back seal portion has a distal end and a proximal end;   b) a pair of end seal portions formed by sealing the film in a width direction and disposed on ends in a length direction;   c) an edge seal portion formed by sealing the film and disposed on one side end;   d) a notch being formed in the edge seal portion, the notch serving as a starting point for opening of the bag body in an opening direction; and   e) an easy-to-cut portion disposed on the back surface of the bag body and along an extension of the notch in the opening direction, wherein the easy-to-cut portion extends along the back seal portion between the distal end and the proximal end and further extends away from the back seal portion toward each opposing side, wherein the ends of the easy-to-cut portion are spaced from the side ends of the bag body.