| 摘要 |
A piston used in a dry ice manufacturing apparatus according to the present invention is connected to a cylinder, and forms a concave or convex center part of a compressed surface compressing dry ice snow, and thus improves hardness of the formed dry ice so that the piston can manufacture the dry ice complying with the intend of a manufacturer. Also, the piston can provide the dry ice having marketability desired by a consumer. Thus, the customer can have confidence in a device or product. |
