Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With bending – folding – winding – or wrapping means
Patent
1996-03-20
1999-03-09
Dixon, Merrick
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With bending, folding, winding, or wrapping means
156361, 156493, 156580, 156581, 156540, 156542, 156235, B05C 132
Patent
active
058795065
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention is based on a method and apparatus for applying labels to packaging containers. In a method of this type, known for instance from German Patent Disclosure DE 29 43 076 A1, the labels are placed by a transfer device at a defined point in a forming tool for deep-drawing of cup-shaped packaging containers and are fixed in it by means of a vacuum. Next, a previously heated zone of a sheet of plastic is drawn into the forming tool, so that in the final phase of forming the containers, the labels stick with their adhesive-coated sides to the jacket faces of the packaging containers. A disadvantage of apparatuses operating by this method is that the forming tool is complicated in design, since it has vacuum connections for aspirating the labels against the forming tool, and must also be moved up and down for insertion of the labels. Moreover, the apparatus is relatively poorly accessible, since the transfer device for the labels is located in the immediate vicinity of the forming tool.
ADVANTAGES OF THE INVENTION
The method according to the invention for applying labels to packaging containers has the advantage over the prior art that the application of the labels to the jacket faces of the packaging containers is done outside the forming tool, which improves the accessibility of the label applicator in apparatuses operating by this method.
An apparatus set forth by the invention has the advantage that the design of the forming tool is simplified, since by way of example no divisions or suction conduits for a vacuum connection need to be provided in the forming tool.
By means set forth hereinafter, improvements to and further developments of the apparatus of the invention are possible. The labels can be kept on hand especially efficiently if they are furnished in roll form. Secure attachment of the labels to the packaging containers is attained by using two contact pressure rollers per packaging container.
BRIEF DESCRIPTION OF THE DRAWINGS
An exemplary embodiment of the invention is shown in the drawings and will be described in further detail in the ensuing description. FIG. 1 shows an apparatus for applying labels to packaging containers in simplified, schematic plan view; FIG. 2 shows the apparatus of FIG. 1 in a section taken along the line II--II of FIG. 1; FIG. 3 is a simplified perspective view of a portion of the apparatus of FIG. 1; and FIGS. 4-7, in simplified plan view, show a portion of the apparatus during successive phases of the application of a label to the packaging container.
DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENT
Packaging containers in the form of cups 11 are formed in a sheet 10 of thermoplastic, for instance in eight rows 12-19 disposed parallel in the feeding direction, and spaced apart from one another crosswise and lengthwise by equal distances a, b, respectively. The cups 11 are filled with some food product, such as yogurt, and are tightly sealed by means of a cover film or foil. The sheet 10 is fed intermittently by means of a feed apparatus, likewise not shown, into the range of a label applicator 20.
Below the sheet 10 and the cups 11, the label applicator 20 has a label storing means, in the form of eight vertically arranged label rolls 21. On each label roll 21, labels 22 for the jacket faces of the cups 11 are joined together in one piece and rolls up in the form of a label strip 26. In the exemplary embodiment, the labels are coated with adhesive over the entire surface of one side. The label rolls 21 are disposed in two parallel rows 23, 24, each with four label rolls 21, laterally of the sheet 10, so that the spacing c between the eight label strips 26 paid out in the feeding direction is equivalent to the corresponding spacing b between two cups 11 in the feeding direction. To assure that this spacing c between the individual label strips 26 will always remain the same if the diameter of the label rolls 21 has changed and is now small because labels 22 have been used, each label roll 21 is assigned its own stationar
REFERENCES:
patent: 3780883 (1973-12-01), Brown
patent: 3968743 (1976-07-01), Scherrer
patent: 4132583 (1979-01-01), Hodgson
patent: 4349405 (1982-09-01), Dudzik
Dixon Merrick
Greigg Edwin E.
Greigg Ronald E.
Robert Bosh GmbH
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