Laminating body

Abstract

A laminating body for laminating a foil onto a substrate includes a pressure area on which there is imprinted a structure which forms an embossing in the foil upon lamination of the foil onto the substrate.

Claims

1. A method for laminating a foil onto a substrate to form a laminate product, the method comprising: providing a laminating body configured to press the foil to the substrate, the laminating body including a pressure area with a contact surface configured to contact the foil, the pressure area being configured to transmit a laminating pressure from a pressing mechanism to the foil and the substrate; forming, by imprinting, an imprinted structure on the contact surface of the pressure area of the laminating body, the imprinted structure including a mirror image of an embossment, wherein only a portion of the contact surface includes the imprinted structure; and laminating the foil to the substrate by pressing the imprinted structure on the contact surface of the pressure area against the foil with a laminating force applied to the foil and the substrate by the pressing mechanism, wherein the imprinted structure is embossed into the foil while the pressing mechanism laminates the foil to the substrate, wherein the imprinted structure is imprinted on the pressure area with a removable lacquer.

2. The method according to claim 1, wherein the removable lacquer includes a stoving lacquer or a UV-cured lacquer.

3. The method according to claim 1, wherein the imprinted structure is configured to form in the foil upon lamination at least one embossing which represents at least one of a multiple laser image, a country contour, a guilloche pattern, alphanumeric characters, and a machine-readable marking of the laminate product formed upon lamination.

4. The method according to claim 1, wherein the pressure area further comprises an additional structure that includes depressions that extend within the laminating body beyond a surface level of the pressure area.

5. The method according to claim 4, wherein the additional structure of the pressure area is formed by at least one of etching, milling, or engraving.

6. The method according to claim 1, wherein the imprinted structure represents personalization data of a user of the laminate product.

7. The method according to claim 1, wherein the imprinted structure is imprinted on the pressure area by means of screen printing or offset printing.

8. The method according to claim 1, wherein the imprinted structure is imprinted on the pressure area with a removable lacquer that is a thermally stable lacquer.

9. The method according to claim 1, wherein individualization data or personalization data are imprinted in the step of forming the imprinted structure on the contact surface of the pressure area.

10. The method according to claim 1, wherein the imprinted structure is imprinted such that the structure forms in the foil upon lamination at least one embossing which is tactilely perceptible or represents at least one of a multiple laser image, an image, alphanumeric characters and an aid for technical processing of a laminate product formed upon lamination.

11. The method according to claim 1, wherein the removable lacquer is configured to be removable with a cleaner.

12. A method for making a laminating body configured to laminate a foil onto a substrate to form a laminate product, the method comprising: providing the laminating body such that the laminating body is configured to press the foil to the substrate, the laminating body including a pressure area with a contact surface configured to contact the foil, the pressure area being configured to transmit a laminating pressure from a pressing mechanism to the foil and the substrate; forming, by imprinting, an imprinted structure on the contact surface of the pressure area of the laminating body, the imprinted structure including a mirror image of an embossment, wherein only a portion of the contact surface includes the imprinted structure, wherein the imprinted structure is configured to be embossed into the foil while laminating the foil to the substrate by pressing the imprinted structure on the contact surface of the pressure area against the foil and the substrate with the pressing mechanism such that the imprinted structure is embossed into the foil while the pressing mechanism laminates the foil to the substrate, wherein the imprinted structure is imprinted on the pressure area with a removable lacquer.

13. The method according to claim 12, wherein the imprinted structure is configured to form in the foil upon lamination at least one embossing which represents at least one of a multiple laser image, a country contour, a guilloche pattern, alphanumeric characters, and a machine-readable marking of the laminate product formed upon lamination.

14. The method according to claim 12, wherein the removable lacquer includes a stoving lacquer or a UV-cured lacquer.

15. The method according to claim 12, further comprising a step of forming an additional structure in the contact surface of the pressure area, the additional structure including depressions that extend within the laminating body beyond a surface level of the pressure area, wherein the additional structure of the pressure area is formed by at least one of etching, milling, or engraving.

16. The method according to claim 12, wherein individualization data or personalization data are imprinted in the step of forming the imprinted structure on the contact surface of the pressure area.

17. The method according to claim 12, wherein the imprinted structure is imprinted on the pressure area by means of screen printing or offset printing.

18. The method according to claim 12, wherein the structure is imprinted on the pressure area with a removable lacquer that is a thermally stable lacquer.

Description

DESCRIPTION OF THE DRAWINGS

(1) Further features and advantages of the invention will result from the following description of embodiment examples of the invention as well as further alternative embodiments in connection with the drawings, which show:

(2) FIG. 1 schematically the steps of a method for imprinting a structure on a laminating body;

(3) FIGS. 2a-2d schematically different laminating bodies with different imprinted structures as a sectional drawing;

(4) FIG. 3 schematically the pressure area of a laminating body with different imprinted structures in plan view; and

(5) FIGS. 4a,4b schematically two different laminating apparatuses.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION

(6) FIG. 1 shows schematically the steps of a method for imprinting a structure on a laminating body 1 and subsequent employment of the laminating body 1 for lamination.

(7) After the beginning SB of the method, a laminating body 1 is first made available in step S1 and optionally so prepared that it can subsequently be printed in step S2. The laminating body 1 can consist in principle of any sufficiently heat-resistant and stable material. In the present case there is employed a laminating body 1 of metal, preferably of chromium steel or brass or nickel-plated brass or chromium-plated brass. Particularly preferably, the laminating body of metal is high-gloss on one or both sides.

(8) For preparing the imprinting, the laminating body 1 is optionally cleaned or polished. Also, there can be applied to the pressure area 2 of the laminating body 1 an adhesion promoter or another chemical substance that facilitates or makes possible the printing of the laminating body 1 in step S2. Subsequently, in step S2 the laminating body 1 is printed with a suitable printing substance such that the pressure area 2 of the laminating body 1 has an imprinted structure 3 which is so configured that it forms an embossing in the foil 51 upon lamination (cf. step S3).

(9) In order for the imprinted structure 3 to effect an embossing in the foil 51 upon lamination, it is sufficiently raised relative to the pressure area 2. Moreover, the imprinted structure 3 is adequately hard or mechanically resistant and does not adhere to the laminated-on foil 51 after lamination, i.e. an adhesive connection that the structure 3 might enter into with the foil 51 upon lamination is significantly weaker than the connection of the structure 3 to the pressure area 2. If the foil 51 is heated by the laminating body 1 or in another way for lamination, the structure 3 is moreover adequately heat-resistant.

(10) The structure 3 can be imprinted on the pressure area 2 in any suitable fashion. Preferably there is used therefor a screen printing, offset printing or UV offset printing process, e.g. a standard screen printing process. For printing the structure 3 there is employed a thermally stable lacquer, e.g. a stoving lacquer, a UV lacquer or a tactile UV lacquer. There can also be employed a lacquer that can be removed again e.g. only with a special cleaner.

(11) Examples of possible designs of the imprinted structure 3 are represented in cross section in FIGS. 2a to 2d. The imprinted structure 3a can be imprinted on the pressure area 2 over the full area and vary only in its height (FIG. 2a). In so doing, there can be produced not only protruding structures 3a, but also depressions relative to further imprinted structures 3a.

(12) The pressure area 2 represented in FIG. 2b is provided only partly with wide 3b and narrow 3c protruding imprinted structures, while other regions of the pressure area 2 are not provided with imprinted structures 3b, 3c. The imprinted structures 3b, 3c here have different heights.

(13) The pressure area 2 represented in FIG. 2c is provided with an imprinted structure 3d with defined roughness, an imprinted structure 3e which upon lamination leaves an MLI (Multiple Laser Image) as an embossing, and a further structure 3f varying in its height. In particular for producing an MLI 3e, but also for producing arbitrary other structures 3f varying in their height, a special relief lacquer can be employed. The structure 3d with defined roughness leaves upon lamination an embossing appearing matt. This structure 3d can have in particular an Rz value of 2-10 m, whereby the Rz value states the areal roughness by means of the distance between the deepest valley and the highest peak of the rough area.

(14) The pressure area 2 represented in FIG. 2d is provided as in FIG. 2b with wide protruding imprinted structures 3b. In contrast to FIG. 2b, however, the pressure area 2 represented here is additionally provided with depressions 4 which have been formed in the laminating body 1 by etching, milling or engraving and thus lie below the level of the pressure area 2.

(15) The imprinted structures, as are represented by way of example in FIGS. 2a to 2d, typically have a height of 2 to 10 m, but can also have any other height that is technically expedient and desired by a manufacturer of laminate products.

(16) In FIG. 3 there is represented a pressure area 2 of a laminating body 1 which is provided with imprinted structures 3 which upon lamination leave embossings in the form of an image of the contour of a country 31, of an image of a guilloche pattern 36, of alphanumeric characters 32, of alphanumeric characters as braille 35, of a height compensation field 33, of an MLI 34 as well as of a marking 37 for technical processing of the laminate product. The alphanumeric characters 32, 35 here represent individualization and personalization data.

(17) Further, there can also be provided images in the form of logos, alphanumeric characters in the form of microcharacters, aids for technical processing of the laminate product in the form of insertion fields and strip fields, or arbitrary other structures which can be produced in a foil 51 by embossing.

(18) The structures 3 can also be provided in the form of areas with defined roughness, as described above in connection with FIG. 2c, in particular for representing the above-mentioned images 31, 36 and markings 37. The areas with defined roughness can be in particular areas that are matt or smooth over the full area or partially. In particular, there can also be provided matt areas with negative images, in particular logos, i.e. the images are represented by smooth areas within the matt area.

(19) The imprinted structures 3 can be configured partly or quite generally such that they produce a tactilely perceptible embossing upon lamination.

(20) In the method step S3 of FIG. 1, a foil 51 is finally laminated onto an arbitrary substrate 52 to produce a laminate product 50. In so doing, the structures 3 imprinted on the laminating body are embossed into the foil 51, whereupon the method sequence represented in FIG. 1 finally ends SE.

(21) The laminate product 50 may be, inter alia, a value document, a payment product, an identity and identification document, a chip card or another card-shaped data carrier and value carrier or the like. In particular, the laminate product 50 may also be a national identity card, a laminated page of a passport, a company ID card, a bank card, a credit card, a payment card (cash card), an insurance card, a membership card or the like.

(22) In FIGS. 4a and 4b, possible laminating apparatuses are indicated. In the laminating apparatus of FIG. 4a, the foil 51 is pressed with the pressure areas 2 of two laminating bodies 1 configured as plates onto the substrate 52. The laminating bodies 1 are provided on their pressure areas 2 with imprinted structures 3 which are embossed into the foil 51 during this process. Alternatively, only one of the laminating bodies 1 can of course also be provided on its pressure area 2 with an imprinted structure 3.

(23) In order for the foil 51 to enter into an adhesive connection with the substrate 52, said foil is heated during compressing. Alternatively, self-adhesive foils 51 could also be employed, or an adhesive or adhesion promoter be applied to the foils 51 or the substrate 52. The substrate 52 can consist in particular of paper or plastic, and the foil 51 in particular of plastic.

(24) In the laminating apparatus represented in FIG. 4b, the laminating bodies 1 are configured as rollers with a circumferential pressure area 2. The foils 51 are thus rolled onto the substrate 52. In so doing, they are heated, through which the foils 51 enter into an adhesive connection with the substrate 52, and the laminate product 50 is produced. Simultaneously, the structures 3 imprinted on the pressure areas 2 are embossed into the foil 51. Alternatively, there can also be employed a self-adhesive foil 51 or an adhesion promoter. Likewise, only one of the laminating bodies 1 can also be provided on its pressure area 2 with an imprinted structure 3. The substrate 52 can consist in particular of paper or plastic, and the foil 51 in particular of plastic.

(25) The imprinted structures 3 are shown in FIGS. 4a and 4b for representational reasons as regular, periodically recurring structures 3. In reality, the imprinted structures 3 are normally substantially more complex, as was described for example with reference to FIGS. 2 and 3.