Dispensing – Collapsible wall-type container – With casing or support
Patent
1985-02-27
1987-05-19
Rolla, Joseph J.
Dispensing
Collapsible wall-type container
With casing or support
222183, 222517, B65D 3556
Patent
active
046660640
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to an improvement in packages which are commonly known as "bag-in-box" packages. This is a packaging system where a bag of flexible material such as film is filled, for instance, with a liquid product through a corresponding opening, possibly with flange in the bag, whereupon a dispensing device is provided at the opening and the bag together with the applied dispensing device is then placed in a stiff envelope such as a cardboard box. Most commonly, liquids such as wine, fruit juice and edible oils are packaged in this manner.
The method commonly consists therein that a bag manufacturer manufactures for the above-mentioned insert a bag of suitable flexible foil or film having a plastic flange in the region of one of the bag corners. The dispensing device is then pressed into the flange and, in this condition, the bag and dispensing device are fed to a filling device in as aseptic a condition as possible. When the bag arrives at the filling device, the dispensing device is removed, the bag is evacuated and then filled through the flange opening with the desired liquid product, a nitrogen zone being provided around the flange area where air might accumulate. The dispensing device is then introduced again and attached to the bag. The filled bag is then introduced into a cardboard box, the dispensing device being present at least in the region of a tear-out opening enabling the end user to install the dispensing device through the tear out opening and then to dispense the liquid product through the use of this device.
This procedure has substantial disadvantages. These disadvantages include difficulties in maintaining aseptic conditions during manufacture and furthermore during the expected shelf-life of a product packed in this way. These conditions have been difficult to achieve because the dispensing device and the flange opening following bag manufacture and before filling must necessarily be left open to the environment. Moreover, the dispensing devices themselves have to be manufactured, stored and assembled under very hygienic conditions. Furthermore, the removal of the dispensing device and then the filling of the bag and the reinsertion of said device result in the possibility of contamination. It should furthermore be noted that it is entirely possible, after the filling of the bag and the application of the dispensing device to the bag, that dirt will penetrate through the dispensing device unless the latter itself has a sealed dispensing opening. This last-mentioned problem has to some extent been solved by providing a sealed dispensing device which is pierced upon the first use thereof, this measure, however, requiring refined and correspondingly expensive manufacture of the dispensing device. All the above factors contribute to a much shorter shelf life for the products packed in this way as compared with the expected storage life based on the characteristics of the film of which the bags are produced.
A further disadvantage of the known systems is that the production method is complicated and slow, and as a result is relatively expensive. While it is possible to automate the manufacturing steps involved, the construction of the dispensing device is often complicated and the filling with removal of the dispensing device, its reinsertion and then attachment to the bag further contribute to a slow cycle of manufacture and consequently to higher manufacturing expenses.
Another disadvantage of the known systems is that when a filled bag with the dispensing device is finally installed in the cardboard package the dispensing device obstructs the proper positioning of the bag in the carton since this device protrudes from the bag. This has the result that it is often difficult for the end user to find the dispensing device in the carton after opening its tear-out opening.
It is thus an object of the present invention to propose an improved method for the preparation of the bag, its filling and the application of the dispensing device which minimizes the contamination probl
REFERENCES:
patent: 3081003 (1963-03-01), Baxter et al.
patent: 3116854 (1964-01-01), Rabb et al.
patent: 3255932 (1966-06-01), Hunter et al.
patent: 3279656 (1966-10-01), Axtell et al.
patent: 3400866 (1968-09-01), Fattori
patent: 4286733 (1981-09-01), Weikert
European Patent Application, 29,419; Lindqvist; 5-1981.
Happert Michael S.
Rolla Joseph J.
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