Sealing label and packaging container

Abstract

A sealing label that includes a first base material, and a second base material which is bonded to one surface of the first base material, and is repeatedly and removably bonded to an opening of a packing container so that the base material seals the opening; the label includes a sealing part which seals the opening; and a support part which is connected with at least one part of the sealing part and bonded to the packing container; wherein the sealing part and the support part has a boundary part, the boundary part has a cut line, wherein the cut line extends in a direction intersecting with a peeling direction to which the sealing part is peeled, the second base material is cut and divided into a proximal area, which is on the proximal side in the peeling direction, and a distal area, which is on the distal side in the peeling direction, by the cut line; and a peeling layer, which releases the first base material from the second base material, is provided between the first base material and the second base material and at the distal side from the cut line in the peeling direction.

1 . A sealing label comprising:
 a sheet-like or film-like first base material; and   a sheet-like or film-like second base material which is bonded to one surface of the first base material, wherein the second base material is repeatedly and removably bonded to an opening of a packing container so that the base material seals the opening;   wherein the label includes   a sealing part which seals the opening, and   a support part which is connected with at least one part of the sealing part and bonded to the packing container;   the sealing part and the support part has a boundary part;   the boundary part has a cut line, wherein the cut line extends in a direction intersecting with a peeling direction to which the sealing part is peeled;   the second base material is cut and divided into a proximal area, which is on the proximal side in the peeling direction, and a distal area, which is on the distal side in the peeling direction, by the cut line; and   a peeling layer, which releases the first base material from the second base material, is provided between the first base material and the second base material and at the distal side from the cut line in the peeling direction.   
     
     
         2 . The sealing label according to  claim 1 , wherein the cut line does not cut and divide the first base material. 
     
     
         3 . The sealing label according to  claim 1 , wherein the label is a laminate in which the first base material, a first adhesive layer, the second base material and a second adhesive layer are laminated in this order, and the adhesive strength of the first adhesive layer is larger than the adhesive strength of the second adhesive layer. 
     
     
         4 . The sealing label according to  claim 1 , wherein the peeling layer is a layer formed by coating a peeling varnish on the second base material. 
     
     
         5 . The sealing label according to  claim 1 , wherein the peeling layer is a layer formed by performing a detackifying treatment on the adhesive layer. 
     
     
         6 . The sealing label according to  claim 1 , wherein the pealing layer and the cut line are connected to each other. 
     
     
         7 . The sealing label according to  claim 1 , wherein the first base material and the second base material are selected from a synthetic paper, a polyethylene terephthalate, a polypropylene and a mixture of the resins. 
     
     
         8 . The sealing label according to  claim 1 , wherein the sealing part .has an approximately pentagonal shape, when observing the part as the whole. 
     
     
         9 . The sealing label according to  claim 1 , wherein a third base material is provided on a surface of the second base material, wherein the surface is opposite to a surface on which the first base material is provided, and the third base material is separated by a cut line into a reinforcing base material which is positioned on an inner side and an approximately doughnut-shaped reinforcing base material which is positioned on an outer side. 
     
     
         10 . A packing container, wherein the container has an opening and houses a substance therein, and the sealing label according to  claim 1  is bonded to the container and covers the opening. 
     
     
         11 . The packing container according to  claim 10 , wherein the label is a laminate in which the first base material, a first adhesive layer, the second base material and a second adhesive layer are laminated in this order, and the adhesive strength of the first adhesive layer is larger than the adhesive strength of the second adhesive layer. 
     
     
         12 . The packing container according to  claim 10 , wherein the container has the opening and a part in the opening which is an area where the opening is formed, and the area adheres to the sealing label.