| 摘要 |
A liner layer is thermally adhered to the end of an aluminium crown c- cap 5 by heating the cap with a high- frequency induced current flow in the end of the cap, in which a primer is applied, by conveying the cap along a high-frequency conductor 7,7a, which repels the cap into contact with a guide wall 8a. The cap is supplied 14 with a thermoplastic resin to be the liner layer after the end of the cap is heated to a thermal adhesion temperature. There is a high- frequency current generating circuit and a high-frequency conductor 7,7a which is to be used with the current generating circuit. The cap may have only a portion of its liner layer thermally adhered thereto. <IMAGE>
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