| 摘要 |
PURPOSE:To improve the productivity without necessities for connecting a cylindrical body with the other member by providing a bonding layer formed of a specific resin component between said cylindrical body of synthetic resin and a connecting member to be connected with said cylindrical body and adhering said bonding layer to said cylindrical body and connecting member through welding by heat. CONSTITUTION:A bonding layer 4 is formed of a resin composition containing a copolymer of ethylene, carbon monoxide and vinyl acetate. The ring-shaped bonding layer 4 is provided between a flange 14 of a cylindrical body 1 connected to a main body 3 of a container and a flange 31 of a cap 2. Then, a female screw 30 of the cap 2 and a male screw 13 of the cylindrical body 1 are fastened together, so that the bonding layer 4 is tightly pressed between the flange 31 of the cap 2 and the flange 14 of the cylindrical body 1. In this state, the main body 3 is heated with pressure in an autoclave to sterilize the body 3 and a nozzle portion thereof. At this time, the bonding layer 4 is softened and melted by the heat of the autoclave. Thus, the flange 14 of the cylindrical body 1 is welded to the flange 31 of the cap 2. |
