| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a bottle can which can suppress the discharge of a good can while suppressing the decrease an inspection precision or the decrease of external surface strength, and which has a high commodity value. <P>SOLUTION: The bottle can 10 is constituted such that a size coat layer 31 and an ink layer 32 are formed on the outer peripheral surface side of a bottle can body 10a made of metal, and an overcoat layer 33 is formed in a manner to cover the size coat layer 31 and the ink layer 32. The ink layer 32 is formed on a section excepting at least a section corresponding to a male thread 16. For the overcoat layer 33, at least a difference between a maximum value and a minimum value of a film thickness in the circumferencial direction at the male thread 16 is set to be 8μm or thinner, and the film thickness in a barrel 11 is set to be 4μm or thicker. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
