| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cap member, a cap and a bottle can with the cap in which the bung-opening torque is reduced to easily open the bung. <P>SOLUTION: In the cap member 30 equipped with a cap body 31 having a disk-shaped top plate part 10 and a peripheral wall part 20 substantially vertically hanging from a peripheral edge of the top plate part 10, and a sheet-type liner 25 arranged along an inner surface of the top plate part 10 of the cap body 31, a friction resistance reducing means 35 is provided either or each of the inner surface of the top plate part 10 and a surface on the side opposite to the top plate part 10 of a liner to reduce the friction therebetween. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
