| 摘要 |
<P>PROBLEM TO BE SOLVED: To surely weld a sealing material in welding the material to a peripheral wall of a container mouth by high frequency induction heating whether a decorative film and a metallic foil laminate film to be used as the sealing material are unified or separate. <P>SOLUTION: A high frequency heat induction sealing cap 30A to be fitted over a mouth 2 of a container 1 via the sealing material for pressing the material against an end surface 3a of the peripheral wall 3 of the mouth of the container 1 when welding the sealing material (the decorative film 11 and the metallic foil laminate film 20) to the peripheral wall 3 of the mouth of the container 1 by high frequency induction heating has an annular groove 31 and an annular projection 33 formed outside the groove 31 on its internal top surface. The cap 30A is formed so that the annular groove 31 has its breadthwise center 31a in a region A opposite to the end surface 3a of the peripheral wall 3 of the mouth and the annular projection 33 presses the end surface of the wall 3 while the cap 30A is fitted over the mouth 2 of the container 1. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
