BOTTLE SEALING STRUCTURE AND SEALING METHOD USING CAP

PROBLEM TO BE SOLVED: To provide a bottle sealing structure using a cap which reduces the amount of material used, facilitates uncapping, is easy to discriminate a once-uncapped cap and a non-uncapped cap, and has a pilfer-proof function that easily separates a different member from the bottle. SOLUTION: A knurling 10 on which a plurality of projections are arranged is formed on the upper face of the neck support ring 9 of a bottle. The cap 3 has a flange 8 formed along the periphery the lower end of the skirt 4. Projections of the flange which fill recesses between the projections of the knurling as fusion takes place for sealing are formed on the underside 6 of the flange 8. The projections of the upper face of the neck support ring 9 and the projections of the underside of the flange 8 are engaged with each other to form a close contact part 12. As the cap is rotated to open, the cross-contact part 12 is peeled, thereby exhibiting the pilfer-proof function. COPYRIGHT: (C)2010,JPO&INPIT