| 摘要 |
The invention concerns the devices for air-tight closing of liquid media in containers, which have a neck, in particular the locks of repeated action protected against unauthorized opening by indication of the first opening, and can be used in food and alcoholic beverage industries. A closing device with indication of the first opening contains a cylindrical cap divided into two tangential parts, upper and lower, the cap enclosed a threaded cover and is connected with it by mechanical fit or in adhesive manner, the cover contains an annular sealing lug, means for indication of the first opening and by the thread it is connected with a measuring bin, which contains elements of fixing on the neck of container. The means of indication of the first opening is made in the lower part of threaded cover in the form of a cylindrical lug and a concentric thin-walled shell, which is made at angle to the cylindrical lug and which together with tangential ends of the parts of cap, bent toward the middle, is folded to the cylindrical lug. Said embodiment of the invention excludes reusability of the closing device after first opening, which increases its reliability. |
