Can lid and can container

Abstract

The can lid includes a panel portion, a score line formed on the panel portion, a tab for breaking the score line, and a raised portion formed on a bottom portion of at least a part of the score line and forming a valley portion between an inner surface of the score line and the raised portion.

1 . A can lid, comprising:
 a panel portion;   a score line formed on the panel portion;   a tab configured to break the score line; and   a raised portion formed at a bottom portion of at least a part of the score line and forming a valley portion between an inner surface of the score line and the raised portion.   
     
     
         2 . The can lid according to  claim 1 , wherein
 the panel portion includes:
 a circular score for an opening, the circular score being formed by the score line; 
 a rivet portion adjacent to an inner side of the score, and to which the tab is fixed; and 
 an auxiliary score formed on a side of the rivet portion that is opposite from the score, the auxiliary score being formed by the score line at least partly including the raised portion and provided adjacent to a side of the rivet portion that is near a center of the panel portion. 
   
     
     
         3 . The can lid according to  claim 1 , wherein
 a height of the raised portion from the bottom portion of the score line is in a range of 0.5% to 11% with respect to a remaining thickness of the bottom portion of the score line where the raised portion is provided.   
     
     
         4 . A can container, comprising:
 the can lid according to  claim 1 ; and   a can body to which the can lid is seamed.   
     
     
         5 . The can container according to  claim 4 , of which internal pressure is a positive pressure. 
     
     
         6 . A can container, comprising:
 the can lid according to  claim 2  and   a can body to which the can lid is seamed.   
     
     
         7 . The can container according to  claim 6 , of which internal pressure is a positive pressure. 
     
     
         8 . A can container, comprising:
 the can lid according to  claim 3 ; and   a can body to which the can lid is seamed.   
     
     
         9 . The can container according to  claim 8 , of which internal pressure is a positive pressure.