Zipper and zipper-attached microwave oven applicable packaging bag

Abstract

A zipper configured to be attached to a bag body inside which steam is generated, includes: a first zipper tape including a base portion and a first fitting portion; and a second zipper tape including a second fitting portion, the second fitting portion being configured to fit the first fitting portion to seal the zipper, wherein two parts of the base portion of the first zipper tape between which the first fitting portion is interposed are provided with a steam-passing section through which steam generated inside the bag body passes.

1 . A zipper configured to be attached to a bag body inside which steam is generated, the zipper comprising:
 a first zipper tape including a base portion and a first fitting portion; and   a second zipper tape including a second fitting portion, the second fitting portion being configured to fit the first fitting portion to seal the zipper, wherein   two parts of the base portion of the first zipper tape between which the first fitting portion is interposed are provided with a steam-passing section through which steam generated inside the bag body passes.   
     
     
         2 . The zipper according to  claim 1 , wherein
 the steam-passing section includes either one of a rift or a hole and both thereof provided in the base portion of the first zipper tape.   
     
     
         3 . A zipper-attached microwave oven applicable packaging bag, comprising:
 a bag body in which inner surfaces of packaging films overlap each other and peripheral edges of the packaging films are adhered to each other; and   the zipper according to  claim 1 , wherein   the first and second zipper tapes are welded to an inner surface or inner surfaces of the packaging films, and   the steam-passing section releases steam generated inside the bag body from an opening of the bag body formed after opening the bag body to an outside of the bag body.   
     
     
         4 . The zipper-attached microwave oven applicable packaging bag according to  claim 3 , wherein
 the first zipper tape is welded to an inner surface of a packaging film of the packaging films,   the second zipper tape is welded to the inner surface of the packaging film to which the first zipper tape is welded in a state in which the second zipper tape covers the first zipper tape, and   the opening is formed by tearing part of the packaging film close to a peripheral edge of the bag body among parts of the packaging film between a welded portion of the first zipper tape and a welded portion of the second zipper tape.   
     
     
         5 . The zipper-attached microwave oven applicable packaging bag according to  claim 4 , further comprising:
 a cut tape attached to the inner surface of the packaging film, wherein   the opening is formed by pulling a tab provided at one end of the cut tape and tearing the packaging film along the cut tape.   
     
     
         6 . The zipper-attached microwave oven applicable packaging bag according to  claim 3 , wherein
 a liquid content is stored inside the bag body.