| 摘要 |
FIELD: packing equipment, particularly closure means. ^ SUBSTANCE: cork plug 2 is produced of natural and/or synthetic material. The plug 2 has base, forming part 17 of inner bottle 6 wall, outer wall 30 adjoining inner wall 24 of the bottle neck 4. Method of plug producing involves longitudinally deforming at least part of outer plug 2 wall 30 up to base thereof during bottle 6 sealing to form at least one groove 18 in the plug; maintaining the plug in above deformed state during bottle sealing with plug 2 so that the plug 2 has the groove 18 during partial bottle unsealing. ^ EFFECT: increased convenience of plug usage. ^ 12 cl, 3 dwg
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