Easy-to-unseal packaging bag

Abstract

An object of the present invention is to provide a packaging bag capable of being realized only by a rather simple processing and opened easily by hand without deteriorating the sealing strength of the packaging bag and the strength of the packaging bag itself and without suffering from the possibility of peeling-off of the sealed portion during a distribution stage. The present invention relates to a packaging bag formed by adhering two sheets of front and rear side films mutually at peripheral parts to seal an inside thereof, wherein the front side film has, in one direction, linearly cuttable property that is larger than linearly cuttable property in any direction of the rear side film, and a processed portion capable of starting cutting of the front side film along the one direction is provided at a part of the peripheral parts that intersects with the one direction.

1 . A packaging bag formed by adhering two sheets of front and rear side films mutually at peripheral parts to seal an inside thereof, 
 wherein the front side film has, in one direction, linearly cuttable property that is larger than linearly cuttable property in any direction of the rear side film, and a processed portion capable of starting cutting of the front side film along the one direction is provided at a part of the adhered peripheral parts that intersects with the one direction.    
     
     
         2 . The packaging bag according to  claim 1 , 
 wherein the front side film comprises a laminated film containing: a linearly cuttable film layer having, in one direction, linearly cuttable property that is larger than the linearly cuttable property in any direction of the rear side film; and a thermally fusible resin film layer,    wherein the rear side film comprises a laminated film containing a thermally fusible resin film layer, and    wherein the thermally fusible resin film layers of the front side film and the rear side film are provided to face each other.    
     
     
         3 . The packaging bag according to  claim 1 , 
 wherein the front side film comprises a laminated film containing a film having linearly cuttable property and a thermally fusible resin film layer,    wherein the rear side film comprises a laminated film containing a thermally fusible resin film layer that does not contain a film having linearly cuttable property, and    wherein the thermally fusible resin film layers of the front side film and the rear side film are provided to face each other.    
     
     
         4 . The packaging bag according to any one of  claims 1  to  3 , wherein the adhered peripheral portions are provided in four sides of the bag.  
     
     
         5 . The packaging bag according to any one of  claims 1  to  3 , wherein the processed portion comprises at least two adjacent notches that are provided at an outer edge portion of the adhered peripheral portions of the packaging bag.  
     
     
         6 . The packaging bag according to any one of  claims 1  to  3 , wherein the processed portion comprises a tab-shaped incision provided in the adhered peripheral portion areas of the packaging bag.  
     
     
         7 . The packaging bag according to  claim 6 , wherein the adhered peripheral portion that is located near the processed portion is formed to have a wider width than those of the other adhered peripheral portions.  
     
     
         8 . The packaging bag according to any one of  claims 1  to  3 , wherein the linearly cuttable film layer comprises any of a monoaxially stretched polyolefin film, a biaxially stretched polyamide film, and a biaxially stretched polyester film.  
     
     
         9 . A packaging bag with a zipper having: a bag main body formed by adhering two sheets of front and rear side films mutually at peripheral parts to seal an inside thereof; and a zipper portion re-sealably provided at an inner side position than the adhered peripheral part of an open edge side of the bag main body, 
 wherein the front side film has, in one direction, linearly cuttable property that is larger than linearly cuttable property in any direction of the rear side film,    wherein the zipper portion is provided along the one direction, and    wherein a processed portion capable of starting cutting of the front side film along the one direction is provided between the adhered peripheral part of an open edge side of the bag main body and the zipper portion, and at a part of the adhered peripheral parts that intersects with the one direction.