Zipper tape and container equipped with zipper tape

Abstract

Contents of a container are prevented from adhering to a zipper prior to unsealing, and a film of a container body is easily and linearly cut upon unsealing. Provided is a zipper tape including: a first base; a tear strip disposed in parallel with the first base at a first side in a width direction of the first base; a second base having a width larger than a width of an area including the first base and the tear strip; a first engagement portion and a second engagement portion that respectively protrude from the first base and the second base, and are engageable with each other; and a peeling portion provided on a surface of a part of the second base, the surface being located near the first base, the part extending beyond the first base at a second side opposite to the first side.

1 . A zipper tape comprising:
 a first base;   a tear strip disposed in parallel with the first base at a first side in a width direction of the first base;   a second base having a width larger than a width of an area including the first base and the tear strip;   a first engagement portion and a second engagement portion that respectively protrude from the first base and the second base, and are engageable with each other; and   a peeling portion provided on a surface of the second base near the first base, the surface being located at a portion where the second base extending beyond the first base at a second side opposite to the first side.   
     
     
         2 . The zipper tape according to  claim 1 , wherein a resin composition forming the peeling portion is different from a resin composition forming a surface of the first base opposite to the first engagement portion, and is different from a resin composition forming a surface of the second base on a side of the second engagement portion at the first side. 
     
     
         3 . The zipper tape according to  claim 1 , further comprising a thick portion provided at an end portion of the first base at the second side. 
     
     
         4 . The zipper tape according to  claim 1 , further comprising a thick portion provided at an end portion of the first base at the first side. 
     
     
         5 . The zipper tape according to  claim 1 , further comprising a thick portion provided on a surface of the second base, at a side near the first base, the second base extending beyond the tear strip at the first side. 
     
     
         6 . The zipper tape according to  claim 1 , wherein the tear strip includes a strip body and a peeling layer, the peeling layer being provided on a surface, of the strip body, on a side facing the second base. 
     
     
         7 . A container with a zipper tape comprising:
 a container body that includes a film; and   the zipper tape according to  claim 1 , the zipper tape being attached to the film, wherein   a part of the second base extending beyond the tear strip at the first side, the tear strip, a surface of the first base opposite to the first engagement portion, and the peeling portion are each bonded to a first surface of the film.   
     
     
         8 . The container with the zipper tape according to  claim 7 , wherein a peel strength between the peeling portion and the first surface is less than or equal to 30 N/15 mm. 
     
     
         9 . The container with the zipper tape according to  claim 7 , wherein a bonded portion between the peeling portion and the first surface has a wavy planar shape. 
     
     
         10 . The container with the zipper tape according to  claim 7 , wherein a cut having a tab shape is formed at least in the first surface. 
     
     
         11 . The container with the zipper tape according to  claim 10 , wherein
 the cut having the tab shape is formed at least in the first surface, the second base, and a second surface of the film, the second surface being opposed to the first surface, and   another cut is formed in the second surface and the second base, and the other cut does not penetrate through the tear strip.   
     
     
         12 . The container with the zipper tape according to  claim 10 , wherein
 the cut having the tab shape is formed in the first surface and the second base, and does not penetrate through a second surface of the film opposed to the first surface, and   a bonded region in which the first surface, the tear strip, the second base, and the second surface are bonded to each other is formed, and the cut having the tab shape is formed in a non-bonded region being at least partially surrounded by the bonded region.   
     
     
         13 . The container with the zipper tape according to  claim 7 , wherein the container body has a bag shape. 
     
     
         14 . The container with the zipper tape according to  claim 7 , further comprising a steaming mechanism configured to cause a containing space to communicate with an external space while keeping the first engagement portion and the second engagement portion engaged with each other when an internal pressure of the containing space is increased.