| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pilfer-proof cap of which the gas barrier property is drastically improved. <P>SOLUTION: This pilfer-proof cap C comprises a shell 1 made of a synthetic resin and a packing 4 made of a synthetic resin. The shell 1 is equipped with a top board 5, a skirt wall 6 and a tamper evidence band 8 which is connected to the lower end of the skirt wall 6 through a plurality of bridges 7. The packing 4 is inserted in the shell 1 and is equipped with a packing top board 15 which is mounted on and bonded to the upper end surface of a container mouth part 3, and an internal leg 16 which is vertically hung from and connected with the packing top board 15, and sealably fitted in the opening of the container mouth part 3 when the cap is closed. The packing 4 made of the synthetic resin includes a gas barrier material containing an ethylene-vinyl alcohol or ethylene-vinyl acetate-vinyl alcohol terpolymerized resin in the molding resin material. <P>COPYRIGHT: (C)2004,JPO |
