| 摘要 |
There is provided a synthetic resin bottle in which an amorphous carbon film having good appearance without forming the brown mottled pattern on the surface thereof is deposited. The present invention provides a bottle having a mouth portion, a shoulder portion, a body portion and a bottom portion in which an amorphous carbon film is deposited on the inner surfaces of the mouth portion, the shoulder portion, the body portion and the bottom portion by supplying C2H2 gas. When the height position of the shoulder portion in the direction toward the mouth portion along the bottle axis from the position at which the inner diameter of the shoulder portion is maximal is within the area whose height is not more than 70% the total height of the shoulder portion along the bottle axis, the amorphous carbon film on the shoulder portion within the above range of height position is formed so that the thickness thereof is not less than 0.9 times but not more than 1.1 times the thickness at the shoulder portion having maximum inner diameter. |
