VESSEL NECK CLOSING DEVICE, VESSEL FITTED BY SUCH DEVICE, CLOSING METHOD FOR SUCH VESSEL AND METHOD OF PRODUCING SUCH DEVICE

摘要

FIELD: packing industry. ^ SUBSTANCE: vessel closing device consists of an outer plastic cap fitted by a tubular bush set along the longitudinal axis and extended along the said casing, on the one side, and an inner insert movable in respect to the neck. The above tubular bush comprises a head for the insert setting and fixing in it and an outer skirt put on the insert axially which are mounted sequentially on the axis. Prior to mounting of the closing device on the vessel neck the skirt forms mainly a truncated cone tapering to the tubular bush axis and moving away from the head; the inner surface is aimed at ensuring pressure against the vessel neck due to the elastic deformation of the tubular bush at mounting the device around the neck. Proposed are the vessel fitted by such a device, method of closing such a vessel and method of producing such a device. ^ EFFECT: new design of a vessel closing device preventing contaminants from entering the vessel. ^ 10 cl, 2 dwg