WO2006077293A1

WO2006077293A1 - Multilayer plate for producing self-adhesive labels, method for the production of one such plate, and label comprising the same

Info

Publication number: WO2006077293A1
Application number: PCT/FR2005/003267
Authority: WO
Inventors: Patrick Deschamps
Original assignee: Gen'etiq (Sarl)
Priority date: 2005-01-20
Filing date: 2005-12-23
Publication date: 2006-07-27
Also published as: FR2880837B1; FR2880837A1

Abstract

The invention relates to a method for producing a multilayer plate for producing auto-adhesive labels, and to the multilayer plate and the label (6) produced. According to the invention, the multilayer plate comprises a protective film and a multilayer arrangement defining at least one label, said multilayer arrangement comprising a front layer (4), at least one anti-adhesive region exposed to the front layer (4) by the upper face thereof, at least one ink layer supported by the lower face of the anti-adhesive region and creating a pattern which is visible through the front layer (4), and an adhesive layer, the pattern and at least part of the adhesive of the multilayer arrangement remaining on the carrier (10) in the event of the removal of the label (6) previously positioned on the carrier (10).

Description

MULTILAYER PLATE FOR THE FORMATION OF LABELS

SELF APHESIVES, METHOD OF SUCH PLATE AND ⁷

LABEL COMPONENT OF THE MULTILAYER PLATE

The invention relates to a multilayer plate for the formation of self-adhesive labels and a method of manufacturing such a plate and a label component of the multilayer plate.

The invention will mainly find application in the production of a multilayer plate whose labels will be used in security applications and in particular, to ensure the traceability and authentication of the medium to which the label will be intended.

However, although particularly intended for such an application, the label component of the multilayer plate may also be used in various applications and in particular in media marking applications.

Depending on the products for which they are intended, labels can fulfill a number of functions, in particular to ensure their inviolability, authentication and traceability. For some products and especially for products of the pharmaceutical industry, a tamper-evident label is particularly important since it ensures that the product has not been opened, for example, during transport.

Authentication and traceability are also very important because they make it possible to distinguish a counterfeit product in a batch of counterfeit products by comparing the credentials and the traceability of each product.

It is also important that the label placed on the product is non-transferable so as to prevent the latter from being detached and then repositioned on another product. In case of detachment of the label, it is also important that the traceability information of the product remain on the latter so that it is always traced. We have already known for several years classically called labels such as "void" or "tamper evident"; these labels make it possible to transfer information contained in the label on the support in case of detachment of the label of the support. However, given the manufacturing process of these labels, the information contained by them is identical for all the labels of the same plate and therefore prevents traceability product by product. In addition, the pattern containing the non-variable information is, also because of the structure of these labels, visible only after detachment of the label. In practice, it is therefore necessary to be able to identify each product equipped with a void-type label, to print in addition the front layer of the labels with variable information which, it will not be transferred in case of detachment of the product. 'label.

The present invention aims to overcome the aforementioned drawbacks and to provide a multilayer plate for the formation of self-adhesive labels with labels for personal traceability of each product.

Another object of the invention is to provide a multilayer plate defining labels that can be used as a control to open the product.

Another object of the invention is to propose a multilayer plate defining labels with a transfer of the information of the label on the support in case of detachment of the latter allowing, on the one hand, the possibility of authenticating the product itself after detachment of the label and, on the other hand, to prevent the application of the label with the product information on another product

The invention thus relates to a multilayer plate for the formation of self-adhesive labels comprising a protective film and a multilayer assembly defining at least one label. According to the invention the multilayer assembly comprises:

a front layer; - At least one non-stick area, secured by its upper face to the front layer;

at least one ink layer supported on the underside of the release zone and constituting a visible pattern through the front layer; - A layer of adhesive, the pattern and at least a portion of the adhesive of the multilayer assembly remaining on the support in case of removal of the label previously positioned on said support.

The invention furthermore relates to a method of manufacturing a multilayer plate for the formation of self-adhesive labels comprising at least one protective film and a multilayer assembly defining at least one label in which:

a first assembly step between a front layer and at least one anti-adhesive zone;

a step of projecting an ink layer on at least one anti-adhesive zone;

a second assembly step between a protective film and an adhesive layer;

a third assembly step between the assemblies obtained by the first and second assembly steps. Other features and advantages of the invention will appear more clearly on reading the following description of an exemplary embodiment of the invention, the description being given by way of non-limiting example and with reference to the accompanying drawings. among which :

FIGS. 1a to 1c represent the different manufacturing steps of a first part of the multilayer plate according to the invention;

- Figures 2a and 2b show in schematic sectional view the steps of manufacturing a second portion of said multilayer plate according to the invention;

FIG. 3 represents a schematic sectional view of a multilayer plate according to the invention;

- Figure 4 shows in sectional view a label positioned on a support and being detachment. Referring to the accompanying drawings and mainly in FIG. 3, it can be seen that the multilayer plate 1 comprises a protective film 2 and a multilayer assembly 3 defining at least one label 4.

The formation of the multilayer plate 1 can be carried out continuously on the existing devices and in particular of the polyolefin type, the length of the plate 1 being variable and possibly the plate 1 can be stored in roll form on a winder.

The multilayer assembly 3 is composed of several layers including a transparent front layer 4 and whose upper face is, according to an advantageous variant of the invention, printable.

The multilayer assembly 3 also comprises at least one anti-adhesive zone 5. This zone 5 may completely cover the lower face of the front layer 4 thus forming a layer.

It may also be envisaged, as represented in the appended figures, to make a multitude of non-stick zones, of identical or different formats, preferably homogeneously distributed for each label 6 formed on the multilayer product 1.

The multilayer assembly 3 further comprises at least one ink layer 7 supported by the underside of the release zone 5. This ink layer 7 constitutes a visible pattern 8 through the front layer 4.

The ink layer 7 is projected on the underside of the non-stick areas 5 and constitutes a pattern 8.

Advantageously, this pattern 8 represents a first specific information 11 specific to each anti-adhesive zone 5 and hence to each label 6 comprising this anti-adhesive zone 5.

The reason 8 constituting a first specific information 11 may in particular be a means of identifying the product of the series of the product, the date of manufacture of the product or other parameters relating to the product, alone or in combination.

The specific information 11 may consist of a series of numbers and / or letters or a graphic. The ink layer 7 may be made in a variant of the invention by an ink visible under ultraviolet.

The multilayer assembly 3 also comprises an adhesive layer 9, the pattern 8 and at least a portion of the adhesive 9 remaining on the support 10 in the event of removal of the label previously placed on the support 10.

Referring to FIG. 4, it can be seen that the front layer 4 is printed and comprises a second piece of information 12.

Advantageously, this second information 12 is specific and corresponds to the first specific information 11 located on at least one non-stick area of the same label 6. The addition of a second specific information to facilitate the control of the product by the comparison of the two pieces of information. It also makes it possible to distribute on the label 6 the information relating to the product between those to remain on the product in case of removal of the label 6 and those to remain on the front layer 4. It should be noted that the second information 12 can also be non-variable and reproduced identically on all labels 6 defined on the multilayer assembly 3.

For example, it may include the brand or type of product. In one embodiment not shown in the accompanying drawings, provision may also be made for the lower face of the front layer 4 not covered by the said at least one release zone 5 to comprise a third piece of information on the whole of the said plate, this information being non-variable.

In the same way as for the first specific information item 11, the second piece of information item 12 and the third piece of information may also consist of a series of numbers and / or letters and / or graphics.

It should be noted that an additional layer of dye may also be provided at the level of the multilayer assembly 3, this dye layer being disposed between the ink layer 7 and the adhesive layer 9. It should also be noted that, to ensure good contact between the front layer 4 and the adhesive layer 9, the thickness of the release zone is preferably between 0.1 and 10 microns. The invention also relates to a method of manufacturing a multilayer plate which will be described hereinafter with reference to FIGS. 1 and 2.

The method consists in carrying out a first step of assembling the front layer shown in FIG. La with said at least non-stick areas 5, the assembly being represented in FIG.

The method further comprises performing a step of projecting an ink layer 7 on said at least one adhesive zone 5, the assembly being shown in Figure Ic.

The method consists in also performing a second assembly step that can be indifferently performed before, after or at the same time as the first assembly and projection steps.

This second assembly step allows the securing between the protective film 2 and the adhesive layer 9.

The method further comprises performing a third assembly step, the assemblies obtained by the first, second assembly steps.

The manufacturing method also comprises a cutting step for defining at least one label.

Other additional steps are also conceivable for producing the multilayer plate, in particular with a step of printing the front layer 4 or else a step of assembling a layer of dye with the assembly formed by the protective film 2 and the adhesive layer 9.

In FIG. 4, it can be seen that the label 6 is placed on a support 10 after having previously removed the label 6 from the protective film 2.

In this FIG. 4, it is imagined that an individual removes the label by pulling on the right edge and it is seen that only the upper part of the label 6 is detached and the ink layer 7 and consequently the pattern 8 constituting the first specific information 11 remains on the adhesive layer 9 itself at least partially remaining on the support 10.

As a result, the support 10 remains identifiable, the specific information 11 remaining fixed on the support 10.

The label 6 can not be positioned on another product since it is incomplete. It can not be repositioned on the support 10 either thus constitutes a tamper evidence when the label is placed for example straddling an opening for products such as boxes or the like.

Of course, other embodiments within the reach of ordinary skill in the art could have been envisaged without departing from the scope of the invention defined by the claims below.

Claims

Multilayer plate for the formation of self-adhesive labels comprising a protective film (2) and a multilayer assembly (3) defining at least one label (6), CHARACTERIZED: in that the multilayer assembly (3) comprises:

a front layer (4);

- At least one anti-adhesive zone (5), secured by its upper face to the front layer (4);

at least one ink layer (7) supported by the underside of the anti-adhesive zone (5) and constituting a pattern (7) visible through the front layer (4);

a layer of adhesive (9), the pattern (8) and at least a part of the adhesive (9) of the multilayer assembly (3) remaining on the support (10) in case of removal of the label (6) previously positioned on said support (10) and in that each label (6) comprises at least one anti-adhesive area (5) with a pattern (8) constituting a first specific information (11).

Multilayer plate according to claim 1, wherein the ink of the ink layer (7) is visible under ultraviolet.

3. A multilayer plate according to claim 2, wherein the upper portion of the front layer (4) is printable and comprises a second specific information (12) corresponding to the first specific information (11) of the same label (6).

4. multilayer plate according to any one of claims 1 to 3, wherein the underside of the front layer (4) not covered by the release areas (5) comprises a non-variable information (13) on all of said plate (1).

5. Multilayer plate according to any one of claims 1 to 4, wherein the specific information (11, 12) and non-variable consist of a series of numbers and / or letters and / or graphics.

6. A multilayer plate according to any one of claims 1 to 5, wherein there is provided an additional layer of dye on the assembly formed by the protective film (2) and the adhesive layer (9).

A method of manufacturing a multilayer plate for the formation of self-adhesive labels (6) comprising a protective film (2) and a multilayer assembly (3) defining at least one label (6), in which:

a first step of assembling the front layer (4) with at least one anti-adhesive zone (5);

a step of projecting an ink layer (7) on said at least one anti-adhesive zone (5);

a second assembly step between a protective film (2) and an adhesive layer (9);

a third step of assembling the assemblies obtained by the first and second assembly steps.

8. A method of manufacturing a multilayer plate according to claim 7, wherein is further carried out a cutting step for defining labels (6).

9. A method of manufacturing a multilayer plate according to claim 7 or 8, wherein an impression of the front layer is made.

10. Label of a multilayer plate according to any one of claims 1 to 9.