| 摘要 |
PURPOSE:To generate soft and fine-grained foams of carbon dioxide gas, in high efficiency, by knocking the outer wall of a container with protrusions having proper tip form and arranged interposing a proper gap there between. CONSTITUTION:The foam-generation tool 1 is fixed to the bottom of a can. The knocking part 3 of the foam-generation tool 1 is deformed to be separated from the bottom 6 of the can after opening the can, and the deformation is released rapidly. The knocking part 3 is displaced by the elastic recovery, and the instantaneous knock is applied by the protrusions 5 to the bottom part 6 of the can. A minute oscillation is generated in the can to cause the generation of fine-grained foams from the beer contacting with the bottom, and the surface of the beer is covered with the bubbles. The amount of foam can be increased by repeating the knocking operation. |
