| 摘要 |
PURPOSE:To provide a can cap wrap-tightening method and its device capable of heating the wrap-tightening part while wrapping and tightening a can cap, and realizing wrap-tightening in a high sealing ability without coating the can cap with sealing compound, etc. CONSTITUTION:A heating means 6 for a heating process is provided between a 1st wrap-tightening means 4 to execute a 1st wrap-tightening process of a can cap Y on a can vessel X and a 2nd wrap-tightening means 5 to execute a 2nd wraptightening process. At first, after the can cap Y provided with a thermoplastic resin layer at least on an inner face side of wrap-tightening curl part is covered on the can vessel X, the 1st wrap-tightening is executed with the 1st wrap-tightening means 4. Next, the wrap-tightening part of the can cap Y wrap-tightened with the 1st wrap-tightening means 4 is heated with the heating means 6 and the resin layer is softened. The 2nd wrap-tightening of the wrap-tightening part whose resin layer is softened is executed with the 2nd wraptightening means 5. |
