Zipper tape container

Abstract

There is provided a container with a zipper tape including: a container body in which a containing space is defined between first and second surfaces; and a zipper tape including a first base, a first engagement portion, a second base, and a second engagement portion. A bonded region between the second base and the second surface includes a first bonded region in which the second base is bonded to the second surface at a part other than a low bonding strength layer, and a second bonded region in which the second base is bonded to the second surface only at the low bonding strength layer, and a minimum distance from a center of the containing space to the first bonded region is equal to or longer than a minimum distance from the center of the containing space to the second bonded region.

1 . A container with a zipper tape, comprising:
 a container body comprising at least a first surface and a second surface opposed to each other, a containing space being defined between the first surface and the second surface; and   a zipper tape provided between the first surface and the second surface to define one side of the containing space, the zipper tape comprising a first base bonded to the first surface, a first engagement portion protruding from the first base, a second base bonded to the second surface, and a second engagement portion protruding from the second base and being engageable with the first engagement portion, wherein   a low bonding strength layer, a bonding strength of which to the container body is lower than the bonding strength of a part other than the low bonding strength layer of the zipper tape, is provided on a part of the second base facing the second surface,   a bonded region between the second base and the second surface comprises a first bonded region in which the second base is bonded to the second surface at the part other than the low bonding strength layer, and a second bonded region in which the second base is bonded to the second surface only at the low bonding strength layer, and   a minimum distance from a center of the containing space to the first bonded region is equal to or longer than a minimum distance from the center of the containing space to the second bonded region.   
     
     
         2 . The container with the zipper tape according to  claim 1 ,
 wherein   the low bonding strength layer is provided, with respect to a width direction of the zipper tape, in an intermediate portion of the second base between a root of the second engagement portion and an end opposite the containing space,   the first bonded region is provided opposite the containing space with respect to the low bonding strength layer, and   the second bonded region is provided by a part of the bonded region protruding toward the containing space.   
     
     
         3 . A container with a zipper tape, comprising:
 a container body comprising at least a first surface and a second surface opposed to each other, a containing space being defined between the first surface and the second surface; and   a zipper tape provided between the first surface and the second surface to define one side of the containing space, the zipper tape comprising a first base bonded to the first surface, a first engagement portion protruding from the first base, a second base bonded to the second surface, and a second engagement portion protruding from the second base and being engageable with the first engagement portion, wherein   the second base comprises a part formed from a second resin composition and facing the second surface, the second resin composition being different from a first resin composition forming the first base and a rest of the second base,   a bonded region between the second base and the second surface comprises a first bonded region in which the second base is bonded to the second surface at a part formed from the first resin composition, and a second bonded region in which the second base is bonded to the second surface only at the part formed from the second resin composition, and   a minimum distance from a center of the containing space to the first bonded region is equal to or longer than a minimum distance from the center of the containing space to the second bonded region.   
     
     
         4 . The container with the zipper tape according to  claim 1 , wherein the second bonded region does not overlap with a longitudinal center of the zipper tape. 
     
     
         5 . The container with the zipper tape according to  claim 1 , wherein
 the second bonded region is formed in a first section in a longitudinal direction of the zipper tape, and   a ratio Y/X of a distance Y from a longitudinal center of the zipper tape to a longitudinal middle part of the first section to a length X that is half an opening width of the container with the zipper tape is 0.15 or more.   
     
     
         6 . The container with the zipper tape according to  claim 1 , wherein the second bonded region includes a plurality of second bonded regions arranged in a longitudinal direction of the zipper tape. 
     
     
         7 . The container with the zipper tape according to  claim 1 , wherein a peel strength between the second base and the second surface in the second bonded region is 30 N/50 mm or less. 
     
     
         8 . The container with the zipper tape according to  claim 1 , wherein at least a part of the second bonded region is located inside a circumference of a circle centered on the center of the containing space and touching the first bonded region. 
     
     
         9 . The container with the zipper tape according to  claim 1 , wherein a side of the second bonded region close to the containing space is stretched toward a longitudinal center of the zipper tape. 
     
     
         10 . The container with the zipper tape according to  claim 1 , wherein the second base is bonded to the second surface through the bonded region only at a side opposite the containing space with respect to a position of the second engagement portion in a width direction. 
     
     
         11 . The container with the zipper tape according to  claim 1 , wherein the container body has a bag shape. 
     
     
         12 . The container with the zipper tape according to  claim 3 , wherein the second bonded region does not overlap with a longitudinal center of the zipper tape. 
     
     
         13 . The container with the zipper tape according to  claim 3 , wherein
 the second bonded region is formed in a first section in a longitudinal direction of the zipper tape, and   a ratio Y/X of a distance Y from a longitudinal center of the zipper tape to a longitudinal middle part of the first section to a length X that is half an opening width of the container with the zipper tape is 0.15 or more.   
     
     
         14 . The container with the zipper tape according to  claim 3 , wherein the second bonded region includes a plurality of second bonded regions arranged in a longitudinal direction of the zipper tape. 
     
     
         15 . The container with the zipper tape according to  claim 3 , wherein a peel strength between the second base and the second surface in the second bonded region is 30 N/50 mm or less. 
     
     
         16 . The container with the zipper tape according to  claim 3 , wherein at least a part of the second bonded region is located inside a circumference of a circle centered on the center of the containing space and touching the first bonded region. 
     
     
         17 . The container with the zipper tape according to  claim 3 , wherein a side of the second bonded region close to the containing space is stretched toward a longitudinal center of the zipper tape. 
     
     
         18 . The container with the zipper tape according to  claim 3 , wherein the second base is bonded to the second surface through the bonded region only at a side opposite the containing space with respect to a position of the second engagement portion in a width direction. 
     
     
         19 . The container with the zipper tape according to  claim 3 , wherein the container body has a bag shape.