WO2017043951A1 - Method for generating variable images inside metallised films and metallised holographic films - Google Patents

Abstract

The invention relates to the generation of variable holographic and/or metallised images that can be validated by the naked eye or by means of conventional electronic reading devices, for preventing fraud, as well as to the method for obtaining the holographic and metallised films.

Description

 PROCESS FOR THE GENERATION OF VARIABLE IMAGES DIMTRO OF METALIZED FILMS AND METALLIZED HOLOGRAPHIC FILMS

Field of the invention The invention relates to the generation of variable images within metallized and holographic films used in official documents, securities plastic cards, lottery tickets, certificates, tax stamps, diplomas, show tickets, all types of identification, insurance , and in general all kinds of ways valued to avoid fraud, adulteration and forgery.

The need for counterfeiting and fraud in documents and products is increasingly prevalent. Counterfeiting and adulteration is presented in a wide variety of articles, both in medicines, documents, identification cards, values, formats, food, spirits, clothing, footwear, software, phonograms, video, spare parts, etc.

Elements against counterfeiting are more effective and easily recognizable and identifiable by the consumer and authority, using technology that prevents imitation and illegal copying. These barriers are obtained by the permanent development of high-tech systems out of the immediate reach of the common forger.

Among the security elements is the hologram, which generates security in the protection against counterfeiting, due to the cutting-edge technology involved in its manufacture, as well as the specialized equipment required for its manufacture. The hologram is easily identifiable by any observer for its three-dimensionality, without generating ambiguity. Reason why it has displaced other systems such as the watermark, intaglio printing, and the use of specific inks or substrates, placing itself at the forefront in terms of protection against counterfeiting and fraud.

Holography is the only process, which generates true third-dimensional images {two-dimensional, three-dimensional, etc.), because it recreates exactly the light waves (interference pattern) after being reflected on a real object. All the characteristics of the light are recorded on photosensitive film plates, by means of optical assemblies and a specific laser. There are 2D-3D holograms, colorgrams, stereograms, holograms with micro text effects, laser validation type pointer, validation with decoder, etc.

The holograms are supplied with engravings on a wide variety of substrates, the most representative being the self-adhesive label on various substrates, such as paper, polyester, PVC, polypropylene, non-transferable materials, for manual or automatic application, and thermal transfer films for automatic application making them applicable to any product, regardless of the material, type of presentation or packaging from which the item to be protected is made.

The series production of holograms known more widely, is effected by the application of pressure and heat on a sheet of metal (on which there is a holographic image) against a metallized plastic film, or coated with a transparent dielectric. This produces the typical holograms for the authentication of all types of products, which are the most representative of the holographic industry. A 2D - 3D nologram is made in two planes, one superficial and one deep, through which the third dimension sensation is produced, in rainbow colors. Technological progress and ongoing research related to protection against counterfeiting, has made it possible to obtain various kinds of easily visible optical effects through holography, as well as hidden or encrypted ones, which are only evidenced by specific lighting angles and with devices designed for this purpose.

Within the visible effects, the rainbow effect, the three-dimensional effect, the 2D / 3D effect, the colorgram effect, the stereogram effect, or those obtained by means of a dot matrix can be stated. Holograms have been shown to fully comply with all the requirements demanded by security against counterfeiting and fraud, because they are clearly visible in a wide range of lighting conditions.

For the elaboration or manufacture of a hologram, the design of the desired image is elaborated with its corresponding security effects, with which the holographic mold is generated. Subsequently, the engraving plates are generated by means of an electroforming process, which will be mounted on the engraving equipment to generate the holographic films or materials of the desired width and thickness. All of the above implies that any modification required on the design initial approved, will generate new costs of generating holographic molds, and the repetition of the process described above, so you have to invest a significant amount of time and resources. Dot matrix holograms also support CLR (secret laser reading) images, where a simple laser device can be used to verify the authenticity of the hologram. Processing images is a complicated mathematical task that involves solving big problems.

The variable holograms are of the type where the variable information is provided by the transparent coatings and produced by laser. For example, alphanumeric sequential numbering in holograms significantly enhances security and provides ease of material tracking. The optical image includes variable information that cannot be removed without its destruction. The variable information appears in the colors of those surfaces on which the hologram is placed.

In US Patent 7,368,217, May 6, 2008, called "Multilayer Image, particularly a multicolored image. The invention is It relates to a process for the production of a multilayer image, preferably a multicolored image. A transfer film is used that is applied to a paper substrate and treated with laser irradiation. The transfer film has a laser sensitive layer and a bottom layer arranged as a bottom. The laser sensitive layer comprises, for example, laser sensitive pigments or other laser sensitive coloring agents. That results in an image-induced laser-induced component. As it is transparent or partly transparent, the background layer may have a printed image that becomes visible in that region. Giving therefore a multilayered image formed by the laser induced image component and the background layer in common. Where it is possible to print variable text.

In US Patent 7,672,030 and in Mexican Patent 222,476 called: Procedure for the reproduction of images or texts on a holographic metallized film in all its variants and colors, transparent oleographic in a two-dimensional or three-dimensional manner; Other types of holograms are described, the contents of which are incorporated by reference to the present description. The most advanced development in the field of the elaboration of holographic security elements refers to a process that allows the elaboration of individual serial or customized holograms, by means of the printing of the design, image, drawing, serial number, word, or of any another distinctive sign, on various substrates or papers, by applying a holographic film by means of heat and pressure on the substrate, such that when removing the remaining film, it has only adhered on the design, image, drawing, number series, words, or any other distinctive sign. the desired holographic image printed on the substrate.

Description of the Invention

The invention relates to the generation of holographic and / or metallized variable images that can be validated with the naked eye or by conventional electronic reading devices to avoid fraud, adulteration and forgery in printed documents, plastic stock cards, lottery tickets, certificates, tax stamps, diplomas, ticket office of shows, all types of identification, insurance, and in general all kinds of valued forms as well as in the efficient administration and control of the applications or solutions and their process of obtaining The present invention relates to all types of conventional and security holograms and its process of obtaining, where the process allows the elaboration of individual serials or customized holograraas, by means of the printing of the design, image, drawing, serial number, word, or of any other distinctive sign, on diverse substrates or papers, by means of the application of a holographic film by means of heat and pressure on the substrate, such that when removing the remaining film, it has only adhered on the design, image, drawing, serial number, words, or any other distinctive sign. the desired holographic image printed on the substrate. This process allows the formation of labels, bells, formats, packaging, and the like, with variable holographic images in terms of design, alphanumeric characters, texts, drawings, or any other distinctive sign, and of any dimension, which cannot be obtained traditional means. This generates a unique product, without the possibility of imitating it, and of the highest security. It also allows have elements of visual validation and elements of agile and low-cost expertise.

 The process for preparing variable holography in metallized films and / or metallized holographic films comprises the following stages:

1) Embossed.

 a) Embossed of the holographic pattern on the metallized material, this process is generated as follows:

 a) Placing the engraving plate containing a specific holographic pattern on the central roller.

 b) The roll of metallized film is placed in the mouth of the embosser.

 c) The metallized film is dressed by the central roller and lateral ios.

 d) Once the plate containing the holographic pattern comes into contact with the metallized film, the pressure and temperature adjustment is made so that the brightness and embossment of the holographic texture is uniform and without any defect.

e) The metallized film containing the holographic emboss is always observed and read in two ways: From the front, its reading is from left to right and in mirror, its reading is from right to left, but you always have to observe the same front and back holographic pattern, f) Once the metallic holographic film roll is embossed, we can observe the holographic elements throughout its area, these elements they can be figures, shapes, shields in different densities, for example: 1,000, 1,500, 2,000 dpis or more, it also contains various visual elements such as: monthly bidi, three-dimensional bidi, texts, micro texts, expansion effects, movement etc.

 The roll of metallic holographic film is subsequently entered into the digital printing process.

2) Digital printing

Within the digital printing process and to obtain the variability in metallized films and / or re-enacted holographic films, two sub processes are generated a) Digital generation of the variable data that will be integrated into the metallized films and / or metallized holographic films, said data variables can be folios, barcodes, QR codes, Data matrix codes, PDF codes, texts, images etc. b) Printing of the variable cytates on the metallized film and / or metallized holographic film.

 Subsequent to a) and b), flexography is re-entered.

3) Flexography

 a) In this second step through the flexography process, we place in one of the printing stations, caustic soda, this is the one that removes the metal to be removed from the metallized film and / or metallized holographic film. In another printing station these films are cleaned of the solution residues, the cleaning is carried out with pressurized water. Variable images contained in metallized films and / or metallized holographic films can be; Folios, barcodes, QR codes, Data matrix codes, PDF codes, variable texts, variable images etc.

The variable holographic elements contain the same safety and visual elements of the holographic or master mold that generated the holographic pattern during the embossing process, by means of the shim or engraving plate, there is no alteration in the brightness, nor is any color applied that obstructs the hologram image variable in metallized films and / or metallized holographic films in expensive arrisas thereof.

 Variable images contained in metallized films and / or metallized holographic films can. be read with the naked eye or with conventional electronic devices such as bar code readers, inspection cameras etc. or Smartphone devices that have commercial and proprietary reading applications.

 Metallized films and / or metallized holographic films can be laminated with adhesives to other plastic films or even other substrates, their use can be to be incorporated into any security hologram, valued documents, plastic cards, ballots, credentials, credit cards credit, etc. Especially the holographic films generated with variable information contain high visual validation and cannot be cloned by conventional means such as scanning, photocopying or others.

Claims

 1. Process for the preparation of variable holography in metallized films and / or holographic metallized films comprises the following stages:  A) Embossing of the holographic pattern on the metallized material;  B) Digital printing; Y  C) Flexography. 2. The process according to claim 1, characterized in that step A process comprises the following steps:  a) Place the engraving plate containing the holographic pattern on the central roller.  b) place the roll of metallized film in the embosser's mouthpiece.  c) dress the metallized film by the central roller and the sides.  d) Perform the pressure and temperature adjustment when the plate containing the holographic pattern comes into contact with the metallized film, 3. The process according to claim 2, characterized in that the metallized film containing the embossment Holographic has the same front and back holographic pattern. 4. The process according to claim 2, characterized in that when the embossed roll of metallized holographic film, the holographic elements are observed throughout its area, said elements can be figures, text forms shields in densities of 1,000, 1,500, 2,000 dpis or plus; It also contains various visual elements such as: monthly bidi, three-dimensional bidi, texts, micro texts, expansion effects, movement, 5. The process according to claim 1, characterized in that step B9 comprises the following steps:  a) Digitally generate the variable data that will be integrated into the metallized films and / or metallized holographic films; Said variable data can be folios, barcodes, QR codes, Data matrix codes, PDF codes, texts, images, among others.  b) Print the variable data on the metallized film and / or metallized holographic film. 6. The process according to claim 1, characterized in that step C) consists in placing in one of the aqueous caustic soda printing stations and removing excess metal from the metallized film and / or metallized holographic film; cleaning with pressurized water in a second printing station such films are cleaned of the residues of the basic solution. 7. The process according to claim 1, characterized in that the variable images contained in the metallized films and / or metallized holographic films can be; Folios, barcodes, QR codes, Data matrix codes, PDF codes, variable texts, variable images, among others, 8. The process according to claim 1, characterized in that the variable holographic elements contain the same safety and visual elements of the holographic or master mold that generated the holographic pattern during the embossing process. 9. The process according to claim 1, characterized in that the variable images contained in the metallized films and / or metallized holographic films can be read with the naked eye or with conventional electronic devices such as bar code readers, cameras inspection etc, or Smartphone devices that have commercial and proprietary reading applications. 10. The process according to claim 1, characterized in that the metallized films and / or metallized holographic films can be laminated with adhesives to other plastic films or other substrates,  11. The process according to claim 1, characterized in that the metallized films and / or metallized holographic films incorporated into a security hologram, valued documents, plastic cards, ballots, credentials, credit cards, etc.  12. The process according to claim 1, characterized in that the re-metallized films and / or metallized holographic films cannot be cloned by conventional means such as scanning, photocopying or others.