| 摘要 |
In a metal cap whose outer surface is formed with a coated film formed from a coating composition containing thermally expandable hollow particles in a paint, the curing initiation temperature TA (°C) which is expressed as the temperature of an inflection point of an attenuation rate by a rigid pendulum visco-elasticity test of the paint satisfies TA>=Ta+25 (herein, Ta is the expansion initiation temperature (°C) of the thermally expandable hollow particles), and the maximum curing temperature TB (°C) which is expressed as the temperature of a peak of the attenuation rate by the rigid pendulum visco-elasticity test of the paint satisfies Tb-10<=TB<=Tb+10 (herein, Tb is the maximum expansion temperature (°C) of the thermally expandable hollow particles). Even in a case where condensation develops in the cap, the metal cap can effectively provide excellent grip, opening, and scratch-resistance. |
