| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cap, a bottle can, and a screw-type sealing bottle in which the fitting strength of the screw can be raised without lowering the cap-opening property to improve the pressure resistance of the screw-type sealing bottle can. <P>SOLUTION: The cap 27 made of a metal having a pilfer-proof property seals the opening part of the bottle can 21, on the mouth piece 23 of which a curl part and a male thread 25 are formed, wherein tensile strength SC of the metal composing the cap 27 is in the range of 220≤SC≤300 N/mm<SP>2</SP>and compressive load resistance in the longitudinal axis direction is set in the range of 2,000≤SB≤4,000 N, in which SB is the screw buckling strength at the male thread 25 of the bottle can 21. <P>COPYRIGHT: (C)2004,JPO |
