Zipper and zipper-equipped bag

Abstract

A tearing guide strip 23 is integrated with a base part 21a or 21b of at least one of a male member 2a and a female member 2b constituting a zipper 2 in a peelable manner to improve the tearing unsealing ability of a zipper-equipped bag provided with an interlocking type zipper enabling resealing and unsealing after the bag is unsealed.

1 - 12 . (canceled) 
     
     
         13 . A cut tape comprising:
 a base part wherein said base part is a continuously formed tape, and   a tearing guide strip which is provided along a longitudinal direction of the base part,   wherein the base part and the tearing guide strip are formed as one integrated molded article,   wherein the tearing guide strip is peelable from a surface of the base part at a binding interface by interfacial peeling, and   wherein the base part and the tearing guide strip are in direct contact with each other.   
     
     
         14 . A bag comprising:
 a base film configured as a bag base material making the bag,   a base part wherein said base part is a continuously formed tape, and   a tearing guide strip which is provided along a longitudinal direction of the base part,   wherein, the base part and the tearing guide strip are formed as one integrated molded article,   wherein the tearing guide strip is peelable from a surface of the base part at a binding interface by interfacial peeling, and   wherein the base part and the tearing guide strip are in direct contact with each other.   
     
     
         15 . The bag according to  claim 14 , wherein the tearing guide strip has a peeling strength of 15 N/15 mm or less. 
     
     
         16 . The bag according to  claim 15 , wherein a binding strength between the base film and the tearing guide strip is larger than the peeling strength of the tearing guide strip. 
     
     
         17 . The bag according to  claim 14 , wherein the base part is provided with one or more thickened parts wherein said thickened parts are thicker portions of the base part. 
     
     
         18 . The bag according to  claim 14 , wherein the tearing guide strip has a higher rigidity than the base part. 
     
     
         19 . The bag according to  claim 14 , wherein the tearing guide strip has a tensile elastic modulus that is at least 1.3 times greater than the tensile elastic modulus of the base part 
     
     
         20 . The bag according to  claim 19 , wherein the tearing guide strip has a tensile elastic modulus that is no more than 4 times greater than the tensile elastic modulus of the base part. 
     
     
         21 . The bag according to  claim 14 , wherein the tearing guide strip is disposed apart from an edge of the base film in width direction of the base part, and
 wherein the base part is bound with the base film along a longitudinal edge of the tearing guide strip.