Package making – Methods – Filling preformed receptacle and closing
Patent
1992-12-04
1994-12-20
Culver, Horace M.
Package making
Methods
Filling preformed receptacle and closing
53267, 53281, 53304, 53314, B65B 300, B65B 728, B67B 302, B67B 3064
Patent
active
053736834
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a process for the filling and closing of vessels, preferably of bottles with a liquid, in which vessels filled in a filling means are closed with a closure element with deformation of the closure element or/and of the vessel and with the formation of a sealing press fit between the closure element and the vessel and a device for the carrying out of the process, the device comprising accordingly a filling means for the filling of the vessel and a closure means for closing of the vessel with a closure element.
Such processes and corresponding devices are used in the beverage industry for filling and closing bottles, a so-called crown cap being mostly used at the closure element. In order to ensure a long-term preservability of the filled beverages, high requirements must be met by the tightness of the closure. Accordingly, a high sealing pressing pressure is necessary between the crown cap and the bottle to be closed. This high sealing pressure is achieved by pressing the crown cap with a great force, e.g. 80 kp, against the opening edge of the bottle in the closure device, and a deformation of the crown edge of the crown cap is effected in such fashion that the crown cap is fixed to the bottle in the pressed position. Accordingly, the construction of the closure means must be designed in such a fashion that correspondingly high pressing pressures can be produced. Restrictions result from this requirement with respect to the minimally achievable dimensions of the closure device, and in particular the minimally achievable overall height.
Consequently, the closing process within the closure device can only be carried out at a relative distance from the filling means due to the large dimensions of conventional devices for the filling and closing of vessels, the result of this being that the filled bottles remain open over a relatively long period of time, and the liquid contained therein is exposed to the ambient air. The influence of the ambient air can substantially impair the long-term preservability and the taste of a filled beverage.
Therefore it is desired to provide closure devices which can be installed as near to the filling means as possible or which can be integrated in the filling means so that the closing of the vessels can be carried out as soon after the filling as possible. Such closure means are described in the publications DE-AS 20 42 328, DE-PS 23 13 268, DE-PS 22 53 985, U.S. Pat. Nos. 3,759,012 and 2,695,743. There is the disadvantage in the case of an integration of the closure means in the filling means that, in the case of a bottle breaking (due to high closure pressures), considerable disturbances of the operating sequence occur.
It is known from DE-OS 14 32 416 to first of all only place closure elements consisting of flat lids on the vessel openings for covering the vessel openings directly after the filling and to feed the vessels with the loosely placed lids to a closure means. There is the risk, in particular at high working speeds, that the loosely placed lids can slip down and off of the vessels.
It is the object of the invention to provide a process of the type mentioned at the beginning, in which a higher quality and, in particular, long-term preservability of the filled products result as compared with known processes and a device for carrying out the process, no increased constructional expenditure for reducing the closure means or for its integration in the filling means being necessary.
The process according to the invention is characterized in that the closure element (21) is affixed in a first closing phase to form a slight sealing press fit and a sealing press fit is produced in a second closing phase with the final sealing pressing pressure. Accordingly, the closure means of the device according to the invention comprises a first means for affixing the closure element to the vessel with the formation of a slight sealing press fit and a second means for producing a sealing press fit with the final sealing pressing pressure.
It can be achieved by
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