| 摘要 |
PROBLEM TO BE SOLVED: To provide a resin cap for a carbonated beverage vessel which is fitted to a vessel mouth part and pulled off for unsealing and effectively prevents the blow-off of the cap. SOLUTION: This resin cap comprises a top surface 1, a fitting part 2 to the vessel mouth part formed on a circumferential edge of the top surface, and an outer band 15 which is formed to surround the fitting part and provided with an unsealing tab 16. A score breaking protruded piece 30 which is erected upwardly and an ended straight score 31 are formed on the top surface. The score breaking protruded piece is formed at least on the position across the line connecting a center of the top surface to a center of the unsealing tab, the ended straight score is formed at the position where the score is broken by collapsing the score breaking protruded piece, and the gas in the vessel is released by breaking the score. |
