WO2003022567A1

WO2003022567A1 - Multilayered material, use thereof and forms produced therewith

Info

Publication number: WO2003022567A1
Application number: PCT/CH2002/000493
Authority: WO
Inventors: Jules Fischer
Original assignee: Fofitec Ag
Priority date: 2001-09-07
Filing date: 2002-09-09
Publication date: 2003-03-20

Abstract

The multilayered material can especially be used as dispensable material in forms and comprises a carrier layer (2), an adhesive layer (3) and a self-adhesive layer (4). The adhesive layer is arranged between the carrier layer (2) and the self-adhesive layer (4) and is in direct contact with the carrier layer (2) and the self-adhesive layer (4); forming a diffusion barrier for the self-adhesive of the self-adhesive layer (4). The carrier layer (2) and the self-adhesive layer (4) can be separated from each other; the adhesive layer (3) remaining fully with the self-adhesive layer (4). The adhesive layer (3) has a dry and non-adhesive surface once it has been thus separated. The invention also relates to forms which can be produced with said multilayered material and provided with integrated cards or cards disposed thereon in addition to the use of the multilayered material in order to prevent printed material or inscriptions from fraud.

Description

DESCRIPTION

TITLE

MULTILAYER MATERIAL, USE OF THE SAME AND MANUFACTURED WITH IT

FORMS

TECHNICAL AREA

The present invention relates to a multi-layer material which can be used in particular as a dispensing material in the form area with a backing layer, a glue layer and a self-adhesive layer, the glue layer being arranged between the backing layer and the self-adhesive layer and directly in contact with the backing layer. The invention further relates to a form with an integrated, removable card or a form with an attached, removable card, each produced using such a multilayer material. Finally, the invention also relates to a special use of the multilayer material.

STATE OF THE ART

A multilayer material of the type mentioned is known, for example, from WO 98/13213 or WO 99/08256, wherein forms of the type mentioned are also described in these prior publications. In this prior art, a so-called peel glue layer is used as the glue layer, a further supporting layer, mostly a film layer, being arranged between this peel glue layer and the self-adhesive layer.

PRESENTATION OF THE INVENTION

The invention has for its object to provide a multi-layer material of the type mentioned, which is even cheaper to produce than the previously known and when applied as a dispensing material in the form area enables the production of novel forms with improved properties. In the case of a multilayer material of the type mentioned at the outset, the solution to this problem consists in

BESTATIGUNGSKOPIE that the glue layer in the multi-layer material also directly with the self-adhesive layer

Contact and is a diffusion barrier for the self-adhesive of the self-adhesive layer that the carrier layer and the self-adhesive layer are separable, the

Glue layer either completely or at least a part of the layer of glue goes with the self-adhesive layer that after such a separation the glue layer or said part of the layer

Glue layer that covers the self-adhesive layer, is dry and not sticky, and that the backing layer is a paper substrate with at least one silicone coating

Includes layer of glue.

In the context of the present invention, the glue layer in addition to its property as a diffusion barrier primarily represents an adhesion regulation layer, i.e. a layer with differentiated adhesive behavior on both sides. The adhesive layer should be anchored firmly or at least considerably more firmly with the self-adhesive layer than with the backing layer, from which it should be detachable by applying a predefinable force that is as defined as possible. It goes without saying that the surface properties of the adjacent layers play a role here. In the context of the present invention, this is siliconization on the side of the carrier layer, which supports the detachment properties of the glue layer from the carrier layer.

The advantages resulting from the use of the multilayer material according to the invention can be seen in particular in the fact that the additional supporting layer between the glue layer and the self-adhesive layer which is still present in the abovementioned prior art is eliminated, which of course saves the costs for this layer on the one hand and their elimination the multilayer material becomes much thinner and eg applied on a form correspondingly less orders. The use of siliconized paper for the backing layer is also inexpensive because this type of paper is used in large quantities in the label area as a so-called covering material and is accordingly available at low cost.

Preferred configurations of the multilayer material according to the invention are specified in the dependent claims. The invention also relates to forms produced with the multilayer material according to the invention as claimed in claims 9 or 10. In the form as claimed in claim 10, the backing layer forms an independent use as a card which can be removed from the form, the fact that paper is used for the backing layer, has a favorable effect on properties of the card such as manageability, grip, writeability etc.

In the context of the present invention, claim 11 finally also relates to the use of a piece of a multilayer material with a transparent layer of glue and a transparent self-adhesive layer for protecting an imprint and / or a label on a substrate.

BRIEF EXPLANATION OF THE FIGURES

The invention will be explained in more detail below on the basis of exemplary embodiments in connection with the drawing. Each shows in a sectional representation:

1 shows a first embodiment of a multilayer material according to the invention;

2 shows a form with an integrated, removable card, produced using the multilayer material from FIG. 1;

3 shows the form from FIG. 2 with the card removed;

4 shows the detached card from FIG. 3 with the glue layer partially removed;

Fig.5 is a form with attached card, also made using the

Multilayer material of Fig. 1;

6 shows the form of FIG. 5 with a detached card, whereby when detached

Adhesion breakage has occurred; 7 shows a representation according to FIG. 5, a cohesive break occurring during detachment; and

8 shows another embodiment of a multilayer material according to the invention with a separating layer on the back of the carrier layer.

WAYS OF CARRYING OUT THE INVENTION

In Figure 1, 1 denotes a multilayer material according to the invention. This comprises a backing layer 2, on which a glue layer 3 and a self-adhesive layer 4 are applied in the order mentioned. The glue layer 3 is in direct contact with the self-adhesive layer. The carrier layer 2 comprises a paper substrate 2.1, which is provided with a siliconization 2.2 towards the glue layer 3. The self-adhesive layer can consist of a commercially available self-adhesive or pressure-sensitive adhesive, as is usually used for self-adhesive labels, and by means of which pressure can be applied to most surfaces to produce a more or less permanent adhesive connection. The specific properties of the glue layer 2 are described in more detail below on the basis of preferred applications. In addition, in FIG. 1 the self-adhesive layer 4 is also provided with a covering material 5 that can be easily removed from it, which e.g. consists of a paper layer 5.1 provided with a silicone layer 5.2. In this form, the multi-layer material 1 according to the invention is easy to handle and in particular can also be rolled up on itself, so that it can advantageously be produced in an endless form.

FIG. 2 shows a first exemplary embodiment for the applicability of the multilayer material 1 from FIG. 1 in the form of a form 9 with an integrated, removable card. On the back of the form 9, which can be a single sheet of paper, but also an endless paper web, a piece of the multi-layer material 1 from FIG. 1 is glued by means of the self-adhesive layer 4 thus exposed after the covering material 5 has been removed beforehand. Subsequently, the form 9 was provided with a stamping 11, the stamping 11 being carried out at least partially, but preferably entirely within the multi-layer material glued on, and preferably all the way down to the carrier layer 2, which however is not itself stamped through. The die-cut 11 creates a die-cut or a card 10 in the form 9, or the card or cards 10 with the other surrounding material of the form 9 is still connected to the not punched through to the backing layer 2 and is held on this over the glue layer 2 and the self-adhesive layer 3.

The layer of glue 2 is now designed in such a way that the card 10 can be removed from the form, but on the other hand it is held so firmly in the form 1 that it does not detach itself when it is used as intended. Proper use includes printing the form e.g. in a computer printer (inkjet or laser printer) and to understand how it is sent by post.

FIG. 3 shows the form from FIG. 2 with the card 10 removed. The card 10 removed here still has the self-adhesive layer 4 and the glue layer 3 on the back. The glue layer 3 has thus become completely detached from the carrier layer 2 when the card 10 is removed due to an adhesion break and removed without residue. This detachment is supported by the siliconization 2.2.

Furthermore, the glue layer 3 has the property that it is no longer sticky at least after it has been detached from the carrier layer 2. Since the glue layer 3 completely covers the self-adhesive layer 4 on the back of the card 10, the card 10 (in contrast to, for example, a conventional self-adhesive label) is on the back and therefore not sticky as a whole.

In a preferred embodiment of the invention, the glue layer 3 on the back of the card is also designed such that it can be written on, for example, with a ballpoint pen or a felt-tip pen.

The aforementioned properties of the glue layer 3, namely its residue-free detachability from a backing layer 2, its loss of stickiness or no longer stickiness and its writability after detachment from the backing layer 2, have already been described for a so-called peel glue in the aforementioned WO 98/13213. As already mentioned, in this prior art there was, however, an additional film layer between the shell glue layer and the self-adhesive layer. By eliminating this film layer, the self-adhesive of the self-adhesive layer 4 is in direct contact with the glue layer 3. Commercial self-adhesive or usual components of the same, especially acrylic resins, have the property of penetrating into adjacent materials quite aggressively through a kind of diffusion process and, among other things, thereby firmly and permanently adhering to them. This can even lead to the penetration of an adjacent thin layer, which then makes it sticky to a certain extent. The latter would of course be disadvantageous in the case of the multilayer material 1 according to the invention with regard to the glue layer 3, because on the one hand this would be less easy or not at all to be detached from the carrier layer 2 and on the other hand it would also be sticky after separation on the back of the card. In the context of the present invention, the glue layer 3 therefore additionally has the task of acting as a diffusion barrier with respect to the self-adhesive of the self-adhesive layer 4, and preferably over a certain period of time, for example at least one year.

With a given composition of the material for the glue layer 3, this can be achieved in particular via its layer thickness, a layer thickness of 8-10 g / m ^{2 should} usually be sufficient.

Suitable glue for the glue layer 3 is e.g. such as can be obtained from SICPA-Aarberg AG, CH-3270 Aarberg under the designation 62-SE-243-1012.

As can be seen from the above, the term "glue" is functional in the context of the present invention and is not to be understood merely in the narrow sense of an adhesive. He is only liable to the extent that the aforementioned separation has not yet taken place. The glue then has the properties of a dry lacquer above a film layer. For example, the back of the detached card 10 from FIG. 3 is "plastified" when the specified glue is used and thereby protects the printing or information, such as a signature etc., underneath it from manipulation.

FIG. 4 shows the detached card 10 from FIG. 3 over any surface 12. The mechanical adhesive 2 is partially exposed on the back of the detached card 10 by partially mechanically scraping off the layer of glue 3 (for example with a knife or only with a fingernail) which makes the card sticky in the exposed areas. she can thereby be glued to the surface 12 by pressing. An application for this would be, for example, gluing card 10 into an album, as is usually done with photos. With appropriate training and printing, the card 10 could also be a type of photo.

FIG. 5 shows a further exemplary embodiment for the applicability of the multilayer material 1 from FIG. 1 in the form of a form 9 with a detachable card attached. The multilayer material 1 is cut here directly to the size of the desired card and, after removing the covering material 5, is glued to the form 9 with its self-adhesive layer 4.

6 shows the card 10 'detached from the form 9. In contrast to the above-described example according to FIGS. 2 and 3, the card 10 'here consists exclusively of the material of the carrier layer 2, which consequently forms the actual wear layer in this embodiment and does not merely have an auxiliary function. As in the example of FIGS. 2 and 3, the layers are also separated between the glue layer 3 and the carrier layer 2, from which the glue layer separates without residue. In the present example, the two layers 2 and 3 therefore do not go with the card 10 ', but remain on the form. There they form a thin, practically non-bulky, dry and no (more) sticky coating that can even be written on if necessary. As in the example in FIG. 4, it could also be provided here that the glue layer 3 can be removed at least partially, in particular mechanically, from the self-adhesive layer, so that another object (possibly also the card 10 'again) ) could be stuck on the form.

In the example of FIGS. 5 and 6, the carrier layer 2 as the material for the card 10 'can preferably consist of stronger paper (for example 150 g / m ² cardboard), so that the card 10' has sufficient inherent rigidity after being detached from the form and this makes it easier and more durable to use. In contrast, it is generally advantageous to use a rather thinner material for the carrier layer in the example of FIGS. 2 and 3, a paper material with a thickness of 80-120 g / m ^2, for example, usually being sufficient here.

To improve the detachability of the card 10 ', in particular in the example of FIGS. 5 and 6, areas with greater adhesion and areas with reduced or without can also be used Adhesion between the carrier layer 2 and the glue layer 3 can be provided, for example by not performing the siliconization 2.2 quite uniformly and, for example, providing a strip with a lower separation value along at least one edge of the card 10 '.

In the example of FIG. 7, a piece 14 of a multi-layer material 1 with a transparent glue layer (3) and also a transparent self-adhesive layer (4) is glued onto a substrate 16, specifically by means of a print or label 15 previously applied there, e.g. a signature. As in the example in FIG. 6, the carrier layer 2 can then be detached from the glue layer, the glue layer (3) and the self-adhesive layer (4) remaining on the substrate 16 above the printing or the lettering. Because of the transparency of the glue layer (3) and the adhesive layer (4), the printing or the inscription 15 on the substrate 16 is clearly visible after the carrier layer 2 has been removed, but is no longer readily accessible under these layers. In addition to protection against dirt, etc., the two layers 3 and 4 thereby also provide a certain degree of protection against attempts to subsequently change the printing or the coating 15. The counterfeit security that can be achieved in this way is in comparison with e.g. to classify known sealing foils much higher, since the two layers 3 and 4 are not connected in one another and in this respect, like a foil, cannot be removed mechanically by peeling them off. Try layers 3 and 4 e.g. scraping off inevitably exposes the self-adhesive of layer 4, which will practically always be recognizable afterwards.

When the multilayer material 1 according to FIG. 7 is used, the two layers 3 and 4 form the actual use, while the carrier layer 2 only serves as a means of transport. After the layers 3 and 4 have been applied, the carrier layer 2 constitutes waste to be disposed of. Accordingly, it will be advantageous to make the carrier layer 2 particularly thin for this use. In contrast, the necessary transparency of the glue layer (3) and the self-adhesive layer (4) can also be used in the other examples, in particular in the example of FIGS. 2 and 3.

8 shows a further multilayer material 1, which again comprises a carrier layer 2, a glue layer 3 and a self-adhesive layer 4. The paper substrate 2.1 of the carrier layer 2 is here, however, also with a back or outside Siliconization) 2.3 provided, whereby the material can be produced in endless form even without a cover for the self-adhesive layer 4 and can be rolled up on itself.

8 shows the glue layer 3 with two sub-layers 3.3 and 3.4. In this embodiment, the glue layer 3 is already a two-layer structure in terms of its manufacture, although in principle further layers could also be provided. The multilayer structure makes it possible in particular to optimize the glue layer 3 with regard to its various functionalities described above. In particular, the partial layer 3.4 could consist of a material which has particularly good barrier properties and prevents the self-adhesive of the layer 4 from diffusing through the glue layer 3 as a whole. The other sub-layer (s) 3.3 could in this case be set and optimized independently with regard to the further properties such as releasability, loss of stickiness and, if applicable, writeability. For such a two-layer construction of the glue layer 3, the glue of the already mentioned company SICPA Aarberg AG with the designation 62-SE-243-1011 in a layer thickness of 7-8 g / m ² in could be used as the material for the partial layer 3.4 with good barrier properties Combination with the previously mentioned glue from the same company with the designation 62-SE-243-1012 with a layer thickness of 2-3 g / m ² can be used.

If only the glue 62-SE-243-1012 is used in the layer thickness of 8-10 g / m ² already mentioned above, a barrier layer of the type of sub-layer 3.4 is not necessary.

The glue layer 3 can generally be made very thin, e.g. with a thickness of only 3 - 8 μm. In contrast, the self-adhesive layer is preferably formed with a thickness in the range between 13-25 μm, in particular in the range between 17-20 μm.

To the extent that siliconization, for example the siliconization of the paper substrate of the carrier layer towards the glue layer, is finally mentioned in the context of the present invention, this term is also to be understood to mean that it generally means the production of release properties, as is basically the case apart from silicone could be obtained by other formulations, for example based on Teflon, polyamide, polyvinyl alcohol or the like. NAME LIST

1 multi-layer material

2 carrier layer

2.1 paper substrate of the carrier layer

2.2, 2.3 Siliconization of the paper substrate 2.1

3 layer of glue

3.3, 3.4 partial layers of the glue layer 3

4 self-adhesive layer

5 cover material

5.1 Paper layer of the covering material

5.2 Siliconization

9 form

10 card

11 punching

12 surface

15 Printing or labeling

16 substrate

Claims

1. Multi-layer material (1) can be used in particular as a dispensing material in the form area, with a backing layer (2), a glue layer (3) and a self-adhesive layer (4), the glue layer (3) between the backing layer (2) and the self-adhesive layer (4) and is arranged directly in contact with the carrier layer (2), characterized in that

that the glue layer (3) in the multilayer material (1) is also in direct contact with the self-adhesive layer (4) and forms a diffusion barrier for the self-adhesive of the self-adhesive layer (4),

that the backing layer (2) and the self-adhesive layer (4) can be separated from one another, the glue layer (3) being completely carried along with the self-adhesive layer (4),

that after such a separation the glue layer (3) covers the self-adhesive layer (4), is dry and not sticky, and

that the carrier layer (2) comprises a paper substrate (2.1) with at least one siliconization (2.2) towards the glue layer (3).

2. Multi-layer material (1) according to claim 1, characterized in that the glue layer (3) is writable and / or printable after said separation.

3. Multi-layer material (1) according to one of claims 1 or 2, characterized in that the glue layer (3) itself in the multi-layer material (1) is constructed at least in two layers (3.3, 3.4) and comprises a layer as a further partial layer (3.4), which essentially takes on the task of the glue layer (3) to act as a diffusion barrier for the self-adhesive of the self-adhesive layer (4).

4. Multi-layer material (1) according to any one of claims 1-3, characterized in that the glue layer (3) which has come along after separation with the self-adhesive layer (4) is mechanically removable.

5. Multi-layer material according to one of claims 1-4 ,. characterized in that the glue layer has a thickness in the range between 3 - 8 μm and / or the self-adhesive layer has a thickness in the range between 13 - 25 μm.

6. multilayer material (1) according to any one of claims 1-5, characterized in that the glue layer (3) and the self-adhesive layer (4) are transparent.

7. Multi-layer material (1) according to one of claims 1-6, characterized in that the paper substrate (2.1) used for the carrier layer (2) is also provided on its side facing away from the glue layer (3) with a siliconization (2.3). ^•

8. Multi-layer material (1) according to one of claims 1-6, characterized in that the self-adhesive layer (4) is covered with an easily removable cover material (5).

9. Form with integrated, removable card (10, 10 ', 10 "), characterized in that on its back, at least partially covering the area of the card, a multilayer material (1) according to one of claims 1-7 is glued on and wherein the card (10, 10 ', 10 ") is punched in the form by the carrier layer (2), and is stamped out from the front of the form to the carrier layer (2)

(11) die cut created in the form.

10. Form with attached, removable card (10,10010 "), characterized in that a piece of a multi-layer material (1) according to one of claims 1-7 by means of the self-adhesive layer (4) of this multi-layer material (1) is glued to the form and the carrier layer (2) of the multilayer material (1) serving as a removable card (10, 10 ', 10 ").

11. Use of a piece (14) of a multilayer material (1) with transparent glue layer (3) and transparent self-adhesive layer (4) according to one of claims 1-7 for protecting an imprint and / or a label (15) on a substrate (16) , characterized in that the piece (14) of the multilayer material (1) by means of its self-adhesive layer (4) on the substrate (16), the printing and / or the inscription (15) covering, glued on and subsequently the carrier layer (2) is separated from the glue layer (3) remaining on the substrate (16) and the self-adhesive layer (4).