EP1274591B1 - Multilayer material and forms produced therefrom - Google Patents

Abstract

The invention relates to a multilayer material that is especially useful in the field of forms as a material to be dispensed and that comprises a substrate layer (2), a glue layer (3) and a pressure sensitive layer (4). The glue layer is disposed between the substrate layer (2) and the pressure-sensitive layer (4), having direct contact with the substrate layer (2) and the pressure-sensitive layer. It functions as a diffusion barrier for the pressure-sensitive mass of the pressure-sensitive layer (4). The substrate layer (2) and the pressure-sensitive layer (4) can be detached from each other, while the glue layer (3) comes off completely or at least a partial layer of the glue layer comes off together with the pressure-sensitive layer (4). Once the layers have been detached from one another in this manner, the glue layer (3) or the above partial layer of the glue layer covering the pressure-sensitive layer (4) has a dry and non-sticky surface. The invention further relates to forms with cards integrated therein or applied thereon.

Description

TECHNICAL AREA

The present invention relates to a multilayer material which can be used in particular as a dispensing material in the form region with a carrier layer, a glue layer and a self-adhesive layer, wherein the glue layer between the carrier layer and the self-adhesive layer and is arranged directly in contact with the carrier layer. The invention further relates to a form with integrated, detachable card or a form with attached detachable card, each made using such a multi-layer material.

STATE OF THE ART

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

PRESENTATION OF THE INVENTION

The invention has as its object to provide a multi-layer material of the type mentioned, which is even more cost-effective than the previously known produced and when applied as Aufspendematerial in the form area, the production of novel forms with improved properties. The solution to this problem consists in a multi-layer material of the aforementioned type according to claim 1 therein,
that the glue layer in the multilayer material is also in direct contact with the self-adhesive layer and forms a diffusion barrier for the pressure-sensitive adhesive of the self-adhesive layer,
that the carrier layer and the self-adhesive layer are separable from each other, wherein the glue layer either completely or at least a partial layer of the glue layer goes along with the self-adhesive layer, and
that after such a separation the glue layer or said sub-layer of the glue layer covers the self-adhesive layer, is dry and not sticky.

The advantages resulting from the use of the multilayer material according to the invention are to be seen in particular in that the additional load-bearing layer between the glue layer and the self-adhesive layer which is still present in the aforementioned prior art is eliminated, whereby, of course, the costs for this layer are saved, on the one hand their omission the multi-layer material is much thinner and eg applied on a form applied accordingly less.

Preferred embodiments of the inventive multilayer material are specified in the dependent claims.

The invention also relates to forms produced according to the invention with the multilayer material according to claims 9 or 10.

BRIEF EXPLANATION OF THE FIGURES

Fig. 1

eine erste Ausführungsform eines erfindungsgemässen Mehrschichtmaterials;

Fig.2

ein Formular mit integrierter, herauslösbarer Karte, hergestellt unter Verwendung des Mehrschichtmaterials von Fig. 1;

Fig.3

das Formular von Fig. 2 mit herausgelöster Karte;

Fig.4

die herausgelöste Karte von Fig. 3 mit teilweise entfernter Leimschicht;

Fig.5

ein Formular mit aufgesetzter Karte, ebenfalls hergestellt unter Verwendung des Mehrschichtmaterials von Fig. 1;

Fig.6

das Formular von Fig. 5 mit abgelöster Karte, wobei beim Ablösen ein Adhäsionsbruch aufgetreten ist;

Fig.7

eine Darstellung gemäss Fig. 5, wobei beim Ablösen ein Kohäsionsbruch aufgetreten ist; und

Fig. 8

ein andere Ausführungsform eines erfindungsgemässen Mehrschichtmaterials mit einer Trennschicht auf der Trägerschicht-Rückseite.

The invention will be explained in more detail with reference to embodiments in conjunction with the drawings. It shows, in each case in cut representation:

Fig. 1

a first embodiment of a multi-layer material according to the invention;

Fig.2

a form with integrated, extractable card, made using the multilayer material of Fig. 1 ;

Figure 3

the form of Fig. 2 with removed card;

Figure 4

the detached map of Fig. 3 with partially removed glue layer;

Figure 5

a form with attached card, also made using the multilayer material of Fig. 1 ;

Figure 6

the form of Fig. 5 with detached card, wherein an adhesive break occurred during detachment;

Figure 7

a representation according to Fig. 5 where a cohesive failure has occurred during detachment; and

Fig. 8

another embodiment of a multi-layer material according to the invention with a release layer on the backing layer back.

WAYS FOR CARRYING OUT THE INVENTION

In Fig.1 1 denotes a multilayer material according to the invention. This comprises a carrier layer 2, on which a glue layer 3 and a self-adhesive layer 4, are applied in the stated order. The glue layer 3 is in direct contact with the self-adhesive layer. The backing layer may be a paper or plastic film layer. The self-adhesive layer can consist of a commercially available self-adhesive or pressure-sensitive adhesive, as it is commonly used for self-adhesive labels and through which a more or less permanent adhesive bond can be produced under pressure application on most surfaces. The specific properties of the size coat 2 will be described below with reference to preferred applications. Additionally is in Fig.1 the self-adhesive layer 4 is still provided with a readily removable from her cover material, which consists for example of a provided with a silicone layer 5 paper layer 6. In this form, the multilayer material 1 according to the invention is easy to handle and, in particular, can be rolled up on itself, so that it can be advantageously produced in an endless form.

The Fig. 2 shows a first embodiment of the applicability of the multi-layer material of Fig. 1 in the form of a form 9 with integrated, detachable card. On the back of the form 9, which may be a single sheet of paper, but also an endless paper web, is a piece of the multilayer material of Fig. 1 after previously removing the covering material 5/6 by means of the thus exposed self-adhesive layer 4 glued. Subsequently, the form 9 has been provided with a punch 11, wherein the punch 11 is at least partially, but preferably carried out entirely within the glued multi-layer material and preferably fully encircling and down to the support layer 2, which itself is not punched through with. By punching 11 is formed in the form 9 a punched product or a card 10, which is or with the remaining surrounding material of the form 9 only on the not punched with carrier layer 2 in connection and on this on the glue layer 2 and the self-adhesive layer 3 is held.

The glue layer 2 is now formed so that the card 10 can be released from the form, but on the other hand held in the form 1 on the other hand so firmly that it does not detach itself when used as intended. When used as intended, inter alia, the printing of the form, e.g. in a computer printer (inkjet or laser printer) as well as its sending by post.

Fig. 3 shows the form of Fig. 2 with detached card 10. The liberated card 10 carries here the back of the self-adhesive layer 4 and the complete glue layer 3. The glue layer 3 has so far detached completely and residue-free upon release of the card 10 by an adhesion break from the carrier layer 2.

Furthermore, the glue layer 3 has the property that it is no longer sticky at least after its detachment from the carrier layer 2. By the glue layer 3 completely covers the self-adhesive layer 4 on the back of the card 10, the card 10 (unlike, for example, a conventional self-adhesive label) on the back and thus 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 abovementioned properties of the size coat 3, namely its residue-free removability from a carrier layer, its loss of stickiness or non-stickiness and its writability after detachment from the carrier layer have already been described for a so-called Schallsim in the aforementioned WO 98/13213 , As already mentioned, in this prior art, however, an additional film layer between the Schälleimschicht and the self-adhesive layer was still present. Due to the omission of this film layer, the self-adhesive of the self-adhesive layer 4 is in direct contact with the glue layer 2.

Commercially available self-adhesive or conventional components of the same as, above all, acrylic resins now have the property of penetrating quite aggressively into adjoining materials through a kind of diffusion process and thereby, inter alia, arresting them firmly and permanently. This can even lead to penetration of an adjacent thin layer, which then becomes 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 size coat 3, because then, on the one hand, these would be less easily removable, if at all, from the carrier layer 2 and, on the other hand, also sticky after separation on the back of the card. The glue layer 3 comes in the context of the present invention thus additionally the task of acting as a diffusion barrier against the pressure-sensitive adhesive of the self-adhesive layer 4 and preferably over a certain period of time, such as at least one year.

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

As a glue for the size coat 3, for example, is one such as can be obtained under the name 62-SE-243-1012 from the company SICPA-Aarberg AG, CH-3270 Aarberg.

As is clear from the above, the term "glue" in the context of the present invention is functional and not to be understood only in the narrow sense of an adhesive. Insofar as it affects liability only so long as the mentioned separation has not yet occurred. Subsequently, the glue has the properties of a dry lacquer above a film layer. So is the back of the detached card 10 of Fig. 3 when using the specified glue as "plasticized" and thereby protects the possibly underlying printing or otherwise attached information such as a signature, etc. from manipulation.

Fig. 4 shows the detached map 10 of Fig. 3 Over some surface 12. By partial mechanical scraping of the size coat 3 (eg with a knife or even just with the fingernail), the self-adhesive 2 has been partially exposed on the back of the detached card 10, causing the card to become sticky at the exposed locations. It can be adhered to the surface 12 by pressing it to be glued. An application for this would be, for example, pasting the card 10 into an album, as is usually done with photos. The card 10 could also be a kind of photo with appropriate training and printing.

Fig. 5 shows a further embodiment of the applicability of the multi-layer material 1 of Fig. 1 in the form of a form 9 with attached, detachable card. The multi-layer material 1 is here cut directly to the size of the desired card and glued after removal of the covering 5/6 with its self-adhesive layer 4 on the form 9.

In Fig. 6 shows the card 10 'detached from the form 9. In contrast to the example described above Fig. 2 and 3 Here, the card 10 '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 Fig. 2 and 3 However, the separation of the layers but also between the glue layer 3 and the carrier layer 2, from which the glue layer peels residue. In the present example, therefore, the two layers 2 and 3 do not go with the card 10 ', but remain on the form. There they form a thin, practically non-applied, dry and not (more) sticky coating, which may even be writable. As in the example of Fig. 4 could also be provided here that the glue layer 3 of the In particular, mechanically at least partially removes self-adhesive layer, so that on the one or more self-adhesive sites thus exposed, another object (possibly also again the card 10 ') could be adhered to the form.

In the example of FIGS. 5 and 6 If the carrier layer 2 as material for the card 10 'preferably made of stronger paper (eg 150 g / m ^2., Cardboard or plastic, so that the card 10' after their release from the form has sufficient inherent rigidity and thus easier and more durable in In contrast, it is generally advantageous for the carrier layer in the example of Fig. 2 and 3 to use a rather thinner material, in which case, for example, a polyester film with a thickness of 30-50 μm or a paper material with a thickness of 80-120 g / m ² usually suffices.

The Fig. 7 shows an embodiment similar to Fig. 6 with a card 10 "detached from a form 9, but when the card is detached, a cohesive break has occurred within the glue layer 3. Accordingly, only part 3.1 of the glue layer 3 remains on the form 9 as cover for the self-adhesive layer 2, while another one Part 3.2 sticks on the back of the card and goes with the card 10 ". This adherent sub-layer 3.2 protects the card and is additionally preferably writable. The remaining on the self-adhesive layer 2 sub-layer 3.1 must of course be thick enough to cover the self-adhesive effectively and permanently,

Whether during separation an adhesion break between the glue layer 3 and the carrier layer 2 according to Fig. 3 or according to Fig. 6 a cohesive break occurs within the glue layer 3, can be controlled and adjusted via the material and / or surface properties of the glue layer 3 and / or the carrier layer 2 and / or their affinity to one another. In any case, however, the adhesion between the size coat 2 and the self-adhesive layer 3 and the latter, in particular on customary paper surfaces, must be greater than the stated affinity or the internal stability of the size coat 3.

In Fig. 8 Yet another multilayer material 1 is shown, which also again comprises a carrier layer 2, a glue layer 3 and a self-adhesive layer 4. However, the carrier layer 2 here is provided on the back with a release coating 5 (siliconization), as a result of which the material can be produced and rolled up in endless form even without a cover for the self-adhesive layer 4.

Additionally is in Fig. 8 the glue layer 3 is shown with two sub-layers 3.3 and 3.4, which are not identical to the aforementioned sub-layers 3.1 and 3.2. The glue layer 3 is in this embodiment already from its production forth a two-layer structure, which in principle could be provided even more layers. Due to the multilayer structure, it is possible, in particular, to optimize the size of the glue layer 3 with regard to its various above-described functionalities. In particular, the sub-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. In this case, the other sub-layer (s) 3.3 could be independently adjusted and optimized with respect to further properties such as detachability, tackiness loss and, if applicable, writability. For such a two-layered structure of the glue layer 3, as a material for the sub-layer 3.4 with good barrier properties, for example, a 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 combination with the aforementioned glue the same company name with the 62-SE-243 to 1012 with a layer thickness of 2 - 3 are used g / m ^2.

When using exclusively the glue 62-SE-243-1012 in the already mentioned above layer thickness of 8 - 10 g / m ² , a barrier layer on the type of the sub-layer 3.4, however, is not required.

NAME LIST

• 1 multi-layer material
• 2 carrier layer
• 3 layer of glue
• 3.1 - 3.4 Partial layers of the glue layer
• 4 self-adhesive layer
• 5 silicone layer
• 6 paper layer
• 9 form
• 10 card
• 11 punching
• 12 surface

Claims (10)

1. A multilayered material (1), which can be used in particular as dispensable material for forms, having a carrier layer (2), a glue layer (3) and a self-adhesive layer (4), the glue layer (3) being disposed between the carrier layer (2) and the self-adhesive layer (4) and being in direct contact with the carrier layer (2);
   the carrier layer (2) and the self-adhesive layer (4) being separable from one another, the glue layer (3) either being detached completely with the self-adhesive layer (4) or at least a partial layer (3.2) of the glue layer (3) being detached with the self-adhesive layer (4);
   the glue layer (3) or said partial layer (8) of the glue layer covering the self-adhesive layer and being dry and tack-free after such a separation;
   characterized in that
   in the multilayered material (1) the glue layer (3) is also in direct contact with the self-adhesive layer (4) and forms a diffusion barrier for the pressure-sensitive adhesive of the self-adhesive layer (4).
2. A multilayered material (1) according to claim 1, characterized in that the glue layer (3) is designed in such a way that adhesive failure occurs between said glue layer and the carrier layer (2) during separation.
3. A multilayered material (1) according to claim 1, characterized in that the glue layer (3) is designed in such a way that cohesive failure occurs in said glue layer during separation.
4. A multilayered material (1) according to any of claims 1 - 3, characterized in that the glue layer (3) or said partial layer (3.2) of the glue layer can be inscribed and/or printed after said separation.
5. A multilayered material (1) according to any of claims 1 - 4, characterized in that in the multilayered material (1) the glue layer (3) itself is composed of at least two layers (3.3, 3.4) and comprises as a further partial layer (3.4) a layer that essentially assumes the task of the glue layer (3) to function as a diffusion barrier for the pressure-sensitive adhesive of the self-adhesive layer (4).
6. A multilayered material (1) according to any of claims 1 - 5, characterized in that the glue layer (3) or partial layer (3.2) of the glue layer detached with the self-adhesive layer (4) upon separation can be removed mechanically.
7. A multilayered material (1) according to any of claims 1 - 6, characterized in that the carrier layer (2) is provided with a release coating, in particular a siliconizing (5), on the side facing away from the glue layer (3).
8. A multilayered material (1) according to any of claims 1 - 6, characterized in that the self-adhesive layer (4) is covered with a covering material (5, 6) that can be easily removed from it, in particular silicone release paper.
9. A form with an integrated, detachable card (10, 10', 10"), characterized in that on its backside, at least partially covering the area of the card, a multilayered material (1) according to any of claims 1 - 7 is affixed, the card (10, 10', 10") being a punch-out held in the form by the carrier layer (2), which is produced by a punching action (11) carried out from the front of the form up to the carrier layer (2).
10. A form with an attached card (10, 10', 10") that can be detached, characterized in that a piece of a multilayered material (1) according to any of claims 1 - 7 is affixed to the form by means of the self-adhesive layer (4) of this multilayered material (1), the carrier layer (2) of the multilayered material (1) serving as detachable card (10, 10', 10").

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