GB2300379A - Application to substrates of elements or films which have a surface relief pattern providing an optically variable effect - Google Patents
Application to substrates of elements or films which have a surface relief pattern providing an optically variable effect Download PDFInfo
- Publication number
- GB2300379A GB2300379A GB9509246A GB9509246A GB2300379A GB 2300379 A GB2300379 A GB 2300379A GB 9509246 A GB9509246 A GB 9509246A GB 9509246 A GB9509246 A GB 9509246A GB 2300379 A GB2300379 A GB 2300379A
- Authority
- GB
- United Kingdom
- Prior art keywords
- film
- substrate
- adhesive
- optically variable
- previous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000758 substrate Substances 0.000 title claims abstract description 45
- 230000000694 effects Effects 0.000 title description 2
- 239000000853 adhesive Substances 0.000 claims abstract description 38
- 230000001070 adhesive effect Effects 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims description 26
- 239000004922 lacquer Substances 0.000 claims description 21
- 239000010410 layer Substances 0.000 claims description 18
- 239000011241 protective layer Substances 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000004821 Contact adhesive Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000004049 embossing Methods 0.000 description 5
- 238000003475 lamination Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000006187 pill Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000001771 vacuum deposition Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000007756 gravure coating Methods 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate Chemical compound [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000012939 laminating adhesive Substances 0.000 description 1
- 238000007760 metering rod coating Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000010076 replication Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000007651 thermal printing Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000004924 water-based lacquer Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
- G03H1/0252—Laminate comprising a hologram layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/328—Diffraction gratings; Holograms
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F19/00—Advertising or display means not otherwise provided for
- G09F19/12—Advertising or display means not otherwise provided for using special optical effects
- G09F19/14—Advertising or display means not otherwise provided for using special optical effects displaying different signs depending upon the view-point of the observer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/416—Reflective
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
- G03H1/024—Hologram nature or properties
- G03H1/0244—Surface relief holograms
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H2250/00—Laminate comprising a hologram layer
- G03H2250/10—Laminate comprising a hologram layer arranged to be transferred onto a carrier body
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Marketing (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Holo Graphy (AREA)
- Credit Cards Or The Like (AREA)
Abstract
A film or element (12, 14, 15) having an optically variable pattern or relief is applied to a substrate (20), without the use of heat, by use of a contact or non-heat-curable adhesive (30) applied to the film or element (12, 14, 15) or to the substrate (20) and then bringing the two into contact with one another.
Description
Application of diffractive elements to substrates
This invention relates to the application to substrates of elements or films which have a surface relief pattern providing an optically variable effect, i.e. giving a visible image which varies according to the angle of view: examples of such surface relief patterns are diffraction gratings and surface relief holograms.
It has been proposed to manufacture tickets or similar articles of heat-sensitive, so-called thermal, paper. Such articles may carry conventional printing, but can be formed subsequently with additional indicia by thermal printing. This enables preprinted tickets to be marked with additional indicia at any time up to the point of sale. Often such tickets are of considerable value and are therefore liable to counterfeiting. Holograms, or other elements having an optically variable surface relief pattern, may be applied to the tickets at the manufacturing stage, in order to protect the tickets against being copied.
Typically hitherto, holograms have been applied to substrates using hot stamping in small areas, or by continuous hot lamination. However, these techniques cannot be used to apply holograms or other elements to heat-sensitive paper, because the applied heat would darken the heat-sensitive paper.
There is also a need to apply holograms, or other elements which have an optically variable surface relief pattern, onto other substrates, for example onto the lidding foil side (the flat side of a pill pack that is normally printed) and/or the base laminate (the formed part of a blister pack) of blister packs such as those used in the pharmaceutical industry to package pills, capsules etc.
The application of holograms to such substrates has been partially successful using hot stamping in discrete areas, or by continuous hot lamination. However, these methods have not entered full production due to thermal transfer problems at commercial production rates, and subsequent poor heat and chemical resistance of the transferred product. This has meant that even with a heat resistant product, it has not been commercially viable due to the high costs involved in the transfer. A particular problem is that heat-and-pressure activated adhesives limit the possible lacquers that can be used for the holograms, because such adhesives tend to attack many types of lacquers and so degrade the holographic images.
We have now devised a method which can easily and cheaply apply optically variable elements to substrates (including thermal paper and the material of either side of blister packs), enabling use of the optically variable element as a secure identification and anti-counterfeiting measure, yet the element may be decorative, informative and machinereadable.
In accordance with this invention, there is provided a method of applying to a substrate a film or element which has an optically variable relief pattern, the film or element being carried on a carrier, the method comprising applying an adhesive to the film or element or to the substrate, then bringing the film or element into face-to-face contact with the substrate, the adhesive being a contact adhesive or an adhesive curable other than by the application of high temperature when bringing the film or element into contact with the substrate or subsequently.
Where the adhesive is an adhesive curable other than by the application of high temperature, it may be permitted or caused to cure after the optically variable film or element is brought into face-to-face contact with the substrate. The adhesive may be a chemically-cured or radiation-cured adhesive.
Typically the adhesive may be one which is mixed from two components immediately prior to application. The adhesive may be activated or partially cured, for example by the application of heat, before the optically variable film or element is brought into contact with the substrate.
In any event, the film or element and the substrate are both at low temperature (less than 700C and preferably 40 to 500C) when brought together and the adhesive does not require any higher temperature at the nip or subsequently in order to cure the adhesive.
It will be appreciated that only sufficient pressure is used to bring the optically variable film or element into face to-face contact with the substrate. Also in cases where no application of heat is necessary, preferably a small degree of preheating may be applied to the adhesive to improve its flow and adhesion.
Because the adhesive is one which is used without the application of significant heat or pressure, it is possible to select a number of combinations of adhesive and lacquers for the optically variable film or element. Further, the method may be used for applying optically variable film or elements to a thermally-sensitive substrate, without risking heatactivation of the latter.
Thus, in accordance with this invention, a contact adhesive or a non-heat or low-heat curable adhesive may be coated onto a transfer film which is disposed on a carrier via a release layer and comprises a lacquer, the lacquer being formed with an optically-variable surface relief pattern. The carrier would normally be a polyester (PET), bi-axially orientated polypropylene (BOPP), or mono-axially orientated polypropylene (MOPP), typically 6 to 50m and preferably 12 to 254m thick. The lacquer may have release characteristics incorporated in it, therefore negating the need for a separate release layer. The release layer may be embossed or cast but may be used as a protective layer. The embossing may involve using heat and pressure into a lacquer.The lacquer may be solvent based, water based or cured by means such as 'E' beam or "UV" radiation. Casting may be by chemical softening or into uncured or semi-cured 'E' beam or "W" lacquers. The micro-embossing masters used to emboss or cast may comprise diffractive devices made using holographic interference to create a relief pattern, ruled gratings or other mechanically produced images such as refractive or diffractive images, and 'E' beam exposures which produce different 2D and/or 3D diffractive images. Any combination of these techniques may be used to produce different optically variable results. These techniques do not allow only for visual effects and identification, but can be used for machine-read systems.The subsequently embossed or cast layer is preferably coated with a reflective layer, preferably by some kind of vacuum deposition, such as conventional vacuum deposition or sputtering. The reflective layer may comprise a conventional highly reflective layer, e.g. of aluminium, having a thickness of between 1.0 and 100 nanometres, but may comprise a high reflective index coating, for example titanium oxide or selected dielectric materials: the advantage of these is that they are transparent but do not index out the holographic image when subsequently coated. Alternative, the aluminium may be "de-metallised" to give a partially clear and partially metallised layer: preferably this is then either coated with a protective layer or directly coated with the adhesive used to adhere the optically variable film or element onto the substrate.
In accordance with this invention, the optically variable film or element or the substrate is coated with a contact or non-heat curable adhesive: then the two are brought together using a cold or warm nip (up to 40 or 500C), under light pressure only, and then the carrier is removed just after leaving the nip, or at a later point in time. The curing can be effected after the components have been through the nip.
This leaves a thin optically variable layer which can be made heat resistant on the substrate by either curing the optically variable layer or (in some cases more easily) having a wearresistant protective layer either on the reverse side of the embossed lacquer or on top of the embossed lacquer.
A further advantage of the method according to the invention, over conventional hot stamping method, is that it is possible to have more complex layers giving greater abrasion and heat resistance. A yet further advantage is that it is easier to provide lacquers adapted, upon embossing or casting, to give extremely efficient (bright) diffractive or other optically variable images.
In one preferred embodiment, a conventional wide web film/paper laminator is used to coat a film with a thin adhesive, such as a chemically cured iso-cyanate laminating adhesive, or polyurethane lamination adhesive (which adhesives may be either solvent or water based). The coating may be applied to between 0.5 to 20 gsm (preferably between 2.0 and 5.0 gsm) on the film, using either direct, reverse or threeroll Gravure coating or Meyer bar coating for example, onto the non-carrier side of the film. The film is then advanced into a heat tunnel, and on exiting the tunnel it is put through a laminating nip at a temperature less than 700C (and preferably less than 500C). Subsequently the carrier is removed, leaving the thin optically variable film transferred onto the substrate.
In another embodiment, a "UV" or 'E' beam curing adhesive may be coated onto the film, and the film is brought, prior to curing, into contact with the substrate and passed through the lamination nip: then the combined film and substrate are subjected to "UV" or 'E' beam curing before the carrier is stripped away. In a further embodiment the adhesive may be cured prior to the film and substrate coming into contact with each other.
Preferably the adhesive is applied in-line with bringing the film or element together with the substrate.
Alternatively the adhesive may be preapplied in a prior process.
Embodiments of this invention will now be described by way of examples only and with reference to the accompanying drawings, in which:
FIGURES 1 to 5 show different examples of construction of film carrying an optically variable surface relief patters (e.g. a hologram or other diffractive feature); and
FIGURE 6 shows one of the films when transferred to its intended substrate or foil.
Referring to Figure 1, there is shown a basic film 12 on a carrier 10. The film comprises a lacquer 12 applied to the carrier and formed with a surface relief by embossing and having a reflective layer 14 on the embossed surface of the lacquer: the lacquer itself exhibits "release" characteristics. The embossed lacquer can be made a number of different ways, including use of solvent based lacquers, water based lacquers and various cured lacquers.
Figure 2 shows a similar film, but having a separate release layer 11 coated onto the carrier 10 before application of the lacquer 12.
In Figure 3, a protective layer 13 is coated directly on top of the release layer 11, giving a wear-resistant and heat-resistant outer coating when the film is transferred to its intended substrate.
In Figure 4, a protective layer 15 is applied over the micro-relief embossing to help protect and hold the diffraction fringe when subjected to heat or abrasion. Even though the protective layer 15 is below the micro-embossed pattern when the product is transferred to its intended substrate, it still gives considerably greater heat and abrasion resistance than a standard product. This protective layer 15 can also be a sealing layer to stop any possibility of counterfeiters being able to gain access to the embossed micro-relief pattern and taking a casting for subsequent counterfeit replication. In
Figure 5, both protective layers 13 and 15 are included. In this example, protective layer 15 is more likely to be used as a seal as the product already has the separate protective layer 13.
Figure 6 shows the film of Figure 4, once it has been transferred to the substrate 20 and adhered thereto by an adhesive coat 30, the carrier 10 of the film having now been stripped away. As previously mentioned, the substrate 20 may comprise the lidding foil or the base layer of a blister pack, or it may comprise a thermal paper and used to make a ticket or other documents of value. In any of these cases, conventional printing may be applied to the outer-facing surface 20a of the substrate and/or to the outer-facing surface 12a of the lacquer 12.
Claims (13)
1. A method of applying, to a substrate, a film or element which has an optically variable relief pattern, said film or element being carried on a carrier, said method comprising the steps of applying an adhesive to said film or element or to said substrate and then bringing said film or element into face-to-face contact with said substrate, said adhesive being a contact adhesive or an adhesive curable other than by the application of high temperature either during or after the step of bringing said film or element into contact with said substrate.
2. A method as claimed in Claim 1, in which said adhesive curable other than by the application of high temperature is caused to cure after said optically variable film or element has been brought into face-to-face contact with said substrate.
3. A method as claimed in Claim 1 or 2, in which said adhesive curable other than by the application of high temperature is a chemically-cured or a radiation-cured adhesive.
4. A method as claimed in any previous claim, in which said adhesive is activated or partially cured before said optically variable film or element is brought into contact with said substrate.
5. A method as claimed in any previous claim, in which said substrate comprises thermally sensitive material.
6. A method as claimed in any previous claim, in which said film or element, said substrate and said adhesive are each at a temperature of less than 700C when said film or element is brought into contact with said substrate.
7. A method as claimed in any previous claim, in which said film or element, said substrate and said adhesive are each at a temperature of between 40 and 50"C when said film or element is brought into contact with said substrate.
8. A method as claimed in any previous claim, in which said adhesive is subjected to a small degree of heating, so as to improve its flow and/or adhesion characteristics, before said optically variable film or element is brought into contact with said substrate.
9. A method as claimed in any previous claim, in which said film or element or said carrier are provided with a release layer.
10. A method as claimed as claimed in any previous claim, in which said film or element is coated with a protective layer.
11. A method as claimed in any previous claim, in which said film or element comprises a layer of lacquer embossed or cast with an optically variable relief pattern.
12. A method as claimed in any previous claim, in which said optically variable relief pattern is provided with a reflective coating.
13. A method of applying, to a substrate, a film or element which has an optically variable relief pattern, the method being as claimed in claim 1 and substantially as herein described.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB9507033.0A GB9507033D0 (en) | 1995-04-05 | 1995-04-05 | Application of diffractive elements to substrates |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9509246D0 GB9509246D0 (en) | 1995-06-28 |
| GB2300379A true GB2300379A (en) | 1996-11-06 |
| GB2300379B GB2300379B (en) | 1998-09-09 |
Family
ID=10772555
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB9507033.0A Pending GB9507033D0 (en) | 1995-04-05 | 1995-04-05 | Application of diffractive elements to substrates |
| GB9509246A Expired - Lifetime GB2300379B (en) | 1995-04-05 | 1995-05-05 | Application of diffractive elements to substrates |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB9507033.0A Pending GB9507033D0 (en) | 1995-04-05 | 1995-04-05 | Application of diffractive elements to substrates |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB9507033D0 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002000445A1 (en) * | 2000-06-28 | 2002-01-03 | De La Rue International Limited | Optically variable security device |
| FR2823355A1 (en) * | 2001-04-10 | 2002-10-11 | Roux Sebastien Le | Self-adhesive publicity sign for motor vehicle is made from portions of two photographs displayed at different angles on corrugated surface |
| EP1405719A1 (en) * | 2002-10-02 | 2004-04-07 | Lifescan, Inc. | Scratch-resistant metal films and metallized surfaces and methods of fabricating them |
| WO2010089399A1 (en) * | 2009-02-09 | 2010-08-12 | Optaglio S.R.O. | Micro-relief structures |
| US20230145194A1 (en) * | 2019-03-22 | 2023-05-11 | Hazen Paper Company | Method and apparatus for heat resistant coatings |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0273012A2 (en) * | 1986-12-23 | 1988-06-29 | Ciba-Geigy Ag | Method of bonding |
| GB2211760A (en) * | 1987-11-03 | 1989-07-12 | Advanced Holographics Ltd | Security sealing tape using holograms |
| EP0328086A2 (en) * | 1988-02-12 | 1989-08-16 | American Bank Note Holographics, Inc. | Articles incorporating non-continuous holographs and methods of making them |
| US4893887A (en) * | 1983-12-12 | 1990-01-16 | E. I. Du Pont De Nemours And Company | Holographic image transfer process |
| JPH03114879A (en) * | 1989-09-29 | 1991-05-16 | Toppan Printing Co Ltd | Thermal magnetic recording medium and manufacture thereof |
| JPH03157684A (en) * | 1989-11-16 | 1991-07-05 | Fujitsu Ltd | Method for adhering hologram |
| CA2046711A1 (en) * | 1990-07-10 | 1992-01-11 | Wittich Kaule | Multilayer optically variable element |
| JPH0473193A (en) * | 1990-07-13 | 1992-03-09 | Toppan Printing Co Ltd | Heat-sensitive magnetic recording medium and manufacture thereof |
| EP0505689A1 (en) * | 1991-03-27 | 1992-09-30 | Zweckform Etikettiertechnik Gesellschaft Mit Beschränkter Haftung | Label containing a hologram |
| US5239396A (en) * | 1991-06-06 | 1993-08-24 | Thompson Marion E | Safety application of holographic material |
| JPH05318667A (en) * | 1992-05-22 | 1993-12-03 | Dainippon Printing Co Ltd | Valuables package |
| US5401346A (en) * | 1992-12-23 | 1995-03-28 | Hughes Aircraft Company | Laminated hologram decals for identification cards and the like |
-
1995
- 1995-04-05 GB GBGB9507033.0A patent/GB9507033D0/en active Pending
- 1995-05-05 GB GB9509246A patent/GB2300379B/en not_active Expired - Lifetime
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4893887A (en) * | 1983-12-12 | 1990-01-16 | E. I. Du Pont De Nemours And Company | Holographic image transfer process |
| EP0273012A2 (en) * | 1986-12-23 | 1988-06-29 | Ciba-Geigy Ag | Method of bonding |
| GB2211760A (en) * | 1987-11-03 | 1989-07-12 | Advanced Holographics Ltd | Security sealing tape using holograms |
| EP0328086A2 (en) * | 1988-02-12 | 1989-08-16 | American Bank Note Holographics, Inc. | Articles incorporating non-continuous holographs and methods of making them |
| JPH03114879A (en) * | 1989-09-29 | 1991-05-16 | Toppan Printing Co Ltd | Thermal magnetic recording medium and manufacture thereof |
| JPH03157684A (en) * | 1989-11-16 | 1991-07-05 | Fujitsu Ltd | Method for adhering hologram |
| CA2046711A1 (en) * | 1990-07-10 | 1992-01-11 | Wittich Kaule | Multilayer optically variable element |
| JPH0473193A (en) * | 1990-07-13 | 1992-03-09 | Toppan Printing Co Ltd | Heat-sensitive magnetic recording medium and manufacture thereof |
| EP0505689A1 (en) * | 1991-03-27 | 1992-09-30 | Zweckform Etikettiertechnik Gesellschaft Mit Beschränkter Haftung | Label containing a hologram |
| US5239396A (en) * | 1991-06-06 | 1993-08-24 | Thompson Marion E | Safety application of holographic material |
| JPH05318667A (en) * | 1992-05-22 | 1993-12-03 | Dainippon Printing Co Ltd | Valuables package |
| US5401346A (en) * | 1992-12-23 | 1995-03-28 | Hughes Aircraft Company | Laminated hologram decals for identification cards and the like |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002000445A1 (en) * | 2000-06-28 | 2002-01-03 | De La Rue International Limited | Optically variable security device |
| US7054042B2 (en) | 2000-06-28 | 2006-05-30 | De La Rue International Limited | Optically variable security device |
| CZ299338B6 (en) * | 2000-06-28 | 2008-06-25 | De La Rue International Limited | Optically variable security device |
| FR2823355A1 (en) * | 2001-04-10 | 2002-10-11 | Roux Sebastien Le | Self-adhesive publicity sign for motor vehicle is made from portions of two photographs displayed at different angles on corrugated surface |
| EP1405719A1 (en) * | 2002-10-02 | 2004-04-07 | Lifescan, Inc. | Scratch-resistant metal films and metallized surfaces and methods of fabricating them |
| WO2010089399A1 (en) * | 2009-02-09 | 2010-08-12 | Optaglio S.R.O. | Micro-relief structures |
| JP2012517610A (en) * | 2009-02-09 | 2012-08-02 | オプタグリオ エス．アー．オ． | Micro relief structure |
| RU2566928C2 (en) * | 2009-02-09 | 2015-10-27 | Оптаглио С.Р.О. | Microrelief structure, |
| AU2010210070B2 (en) * | 2009-02-09 | 2015-11-12 | Optaglio Sro | Micro-relief structures |
| CN102307719B (en) * | 2009-02-09 | 2015-11-25 | 奥普泰格立奥有限公司 | Micro relief profile |
| US20230145194A1 (en) * | 2019-03-22 | 2023-05-11 | Hazen Paper Company | Method and apparatus for heat resistant coatings |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2300379B (en) | 1998-09-09 |
| GB9507033D0 (en) | 1995-05-31 |
| GB9509246D0 (en) | 1995-06-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5753349A (en) | Document having security image and composite sheet and method for forming | |
| JP4565482B2 (en) | Hologram laminate and hologram label | |
| EP0497837B1 (en) | Optical security device | |
| JP5869244B2 (en) | Optically variable security device and method | |
| US5781316A (en) | Semi-transparent reflective hologram and method of producing same | |
| JPS6242179A (en) | Multilayer foil and manufacture thereof | |
| JPH01307789A (en) | Method and apparatus for producing hologram | |
| JP2001315472A (en) | Information recording medium and card having light diffracting structure, and light diffracting structure body | |
| JPH04331972A (en) | Multi-layer material varying optically | |
| JP4678706B2 (en) | Volume hologram laminate and volume hologram label | |
| KR100429414B1 (en) | Multilayer materials and manufacturing methods therefor | |
| EP0626909B1 (en) | Transfer method and device | |
| JP2001510405A (en) | Method of manufacturing security tape and security thread | |
| US7982930B2 (en) | Preserved and enhanced holographic and optically variable devices and method for making the same | |
| AU2004275005A1 (en) | Method and film system for producing a personalised, optically variable element | |
| JP2000047556A (en) | Production of article having light diffracting structure | |
| GB2300379A (en) | Application to substrates of elements or films which have a surface relief pattern providing an optically variable effect | |
| US7704576B2 (en) | Thermal transfer sheet, process for producing the same, and image formed object produced by transfer of said thermal transfer sheet | |
| JP7441222B2 (en) | Methods for producing film intermediates, methods for producing film intermediates and products | |
| JP2000047555A (en) | Manufacture of article with light diffracting structure | |
| JP4788083B2 (en) | The manufacturing method of the sheet | seat for affixing which can peel a base material sheet. | |
| JP5509843B2 (en) | Hologram label | |
| JP4765189B2 (en) | Anti-counterfeit image-forming body and method for producing the same | |
| JP2001219681A (en) | Decorative body | |
| WO2005043254A1 (en) | Method of personalizing metallic holographic layers applicable on substrates |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PE20 | Patent expired after termination of 20 years |
Expiry date: 20150504 |