Packaging member with easy-opening means

Abstract

A packaging member ( 1, 80, 100 ) is provided with easy-opening means ( 7, 85, 107, 108 ) for allowing the packaging member to be opened easily, wherein the easy-opening means is either positionally or structurally improved. As one example, the packaging member is a packaging bag ( 1, 80 ), in which the easy-opening means serves as a tearing start point when opened with the use of the easy-opening means. The easy-opening portion is formed at a position slightly shifted inward from a perimeter edge of the packaging bag. As another example, the packaging member is a packaging container ( 100 ), in which the easy-opening means is structurally improved.

1 . A packaging member ( 1 ,  80 ) in which an easy-tearing means ( 7 , 85 ) for facilitating an opening operation toward the packaging member is provided, wherein the easy-tearing means is either positionally or structurally improved, 
 characterized in that    said easy-tearing means is formed at a position shifted inwardly from a perimeter edge of the packaging member without passing through the perimeter edge,    said easy-tearing means being to be drawn to the perimeter edge.    
     
     
         2 . The packaging member according to  claim 1 , wherein the packaging member is a packaging bag ( 1 ,  80 ), wherein the easy-tearing means ( 7 ,  85 ) serves as a tear-staring point when opened using the easy-tearing means.  
     
     
         3 . The packaging member according to  claim 2 , wherein the easy-tearing means is a rough surface consisting of fine irregularities, the rough surface being formed at a position shifted inwardly from a side edge of the packaging bag without passing through the side edge.  
     
     
         4 . A packaging member ( 100 ) in which an easy-tearing means ( 107 ,  108 ) for facilitating an opening operation toward the packaging member is provided, wherein the easy-tearing means is either positionally or structurally improved, 
 said packaging member is a packaging container ( 100 ),    a rectangular laminate film material ( 102 ) providing a base of the packaging container being formed to a have a box shape by mutually overlapping longitudinal both sides edges ( 102   a ) thereof in a palm-to-palm manner to produce a cylindrical member ( 102 ), the overlapped palm-to-palm portions ( 102   a ) being joined to produce a palm-to-palm joined portion ( 103 ), the palm-to-palm joined portion being folded toward a remaining main part of the cylindrical member through a folding line ( 104 ) set thereon, and a cylindrically shaped opening ( 105  ( 106 )) at each end of the cylindrical member being sealed,    characterized in that    wherein the easy-tearing means has    two cutting line ( 107 ) formed at intervals at an end edge of palm-to-palm joined portion, and    a further cutting line ( 108 ,  109 ) of which cut depth is within a thickness of the laminate film material, formed at a position on the main part near folding line so as to face the two cutting lines, both ends of the further cutting line being extended to the palm-to-palm joined portion beyond the folding line to connect or intersect to or with the two cutting portions.    
     
     
         5 . The packaging member according to  claim 4 , wherein the further cutting line consists of an ark-like cutting line ( 109 ).  
     
     
         6 . The packaging member according to  claim 4 , wherein the further cutting line consists of a trapezoidal cutting line ( 108 ).  
     
     
         7 . The packaging member according to any of  claims 4  to  6 , wherein the laminate film material has a three-layer structure of a biaxial oriented polyester film, a monoaxial oriented high-density polyethylene film, and a polyethylene film.  
     
     
         8 . The packaging member according to any of  claims 4  to  6 , wherein laminate film material has a three-layer structure of a biaxial oriented polyester film, a monoaxial oriented polypropylene film, and a polyethylene film.  
     
     
         9 . The packaging member according to any of  claims 4  to  6 , wherein the laminate film material has a four-layer structure of a biaxial oriented polyester film, an aluminum foil, a monoaxial oriented polypropylene film, and a polyethylene film.