| 摘要 |
PURPOSE: To simply open a beverage bottle, in a metal screw lid used in the beverage bottle (for a refreshing drink or the like), by making the screw lid hard to slip when the bottle is opened by twisting the screw lid by providing unevenness to the metal itself of the screw part of the screw lid. CONSTITUTION: Protruding parts 8 are formed to screw thread parts 5 along the peripheral direction thereof when a screw lid (the upper part of an up-and- down separation lid) 1 is looked from the outside to form a slip-proof element. The unevenness of the slip-proof element is collectively and easily formed to the screw thread parts when the metal screw lid is formed without requiring a special process or a special material. By this constitution, the metal screw lid 1 is made hard to slip and a beverage bottle is easily opened without requiring excessive force. |
