Cap

Abstract

A cap includes: a cap body including a top plate and a skirt having a tubular shape disposed on a circumferential edge of the top plate, a sealing member disposed on an inner surface of the top plate and configured to seal a mouth of a container, a slit extending in a circumferential direction of the skirt, and a worked portion formed at least in a part of the slit in the circumferential direction on at least a side of the slit closer to the top plate.

What is claimed is: 
     
         1 . A cap comprising:
 a cap body including a top plate and a skirt having a tubular shape disposed on a circumferential edge of the top plate;   a sealing member disposed on an inner surface of the top plate and configured to seal a container mouth;   a slit extending in a circumferential direction of the skirt; and   a worked portion formed at least in a part of the slit in the circumferential direction on at least a side of the slit closer to the top plate.   
     
     
         2 . The cap according to  claim 1 , wherein the worked portion is disposed in two parts, both ends or both end portions, of the slit. 
     
     
         3 . The cap according to  claim 1 , wherein the worked portion is disposed only on the side of the slit closer to the top plate. 
     
     
         4 . The cap according to  claim 2 , wherein the worked portion is disposed only on the side of the slit closer to the top plate. 
     
     
         5 . The cap according to  claim 1 , wherein the worked portion is a recess or a protrusion disposed in the skirt. 
     
     
         6 . The cap according to  claim 2 , wherein the worked portion is a recess or a protrusion disposed in the skirt. 
     
     
         7 . The cap according to  claim 3 , wherein the worked portion is a recess or a protrusion disposed in the skirt. 
     
     
         8 . The cap according to  claim 1 , wherein the worked portion has a length in an axial direction of the cap longer than a length in the circumferential direction. 
     
     
         9 . The cap according to  claim 2 , wherein the worked portion has a length in an axial direction of the cap longer than a length in the circumferential direction. 
     
     
         10 . The cap according to  claim 3 , wherein the worked portion has a length in an axial direction of the cap longer than a length in the circumferential direction. 
     
     
         11 . The cap according to  claim 4 , wherein the worked portion has a length in an axial direction of the cap longer than a length in the circumferential direction. 
     
     
         12 . The cap according to  claim 5 , wherein the worked portion has a length in an axial direction of the cap longer than a length in the circumferential direction. 
     
     
         13 . The cap according to  claim 6 , wherein the worked portion has a length in an axial direction of the cap longer than a length in the circumferential direction. 
     
     
         14 . The cap according to  claim 7 , wherein the worked portion has a length in an axial direction of the cap longer than a length in the circumferential direction.