| 摘要 |
PROBLEM TO BE SOLVED: To provide a resin cap including a liner which prevents protrusion of a liner material and formation of air bubbles, has excellent sealability, productivity, and economical efficiency, and is formed of a hot melt composition even when the liner material formed of the hot melt composition is used.SOLUTION: An annular inclined surface 5 is formed on a boundary part of an inner surface of a top plate part 2 of a resin cap shell and an inner surface of a skirt part 3. An annular projection 7 which projects to an inward of a cap from the inner surface of the skirt part is formed on a lower side of the annular inclined surface. A flat part 6 continuing to the annular inclined surface is formed on the inner surface of the top plate part. A liner 20 formed of a hot melt composition is formed upward from the annular projection and on the annular inclined surface and the flat part. In a closed state where the resin cap is applied to a container mouth part, a tip end outer side corner part 32 of the container mouth part abuts on the annular inclined surface. |
