EP1097042A1 - Verfahren zur bereichsweisen übertragung der dekorlage einer transferfolie auf ein substrat sowie hierfür geeignete transferfolie - Google Patents
Verfahren zur bereichsweisen übertragung der dekorlage einer transferfolie auf ein substrat sowie hierfür geeignete transferfolieInfo
- Publication number
- EP1097042A1 EP1097042A1 EP00940147A EP00940147A EP1097042A1 EP 1097042 A1 EP1097042 A1 EP 1097042A1 EP 00940147 A EP00940147 A EP 00940147A EP 00940147 A EP00940147 A EP 00940147A EP 1097042 A1 EP1097042 A1 EP 1097042A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- adhesive layer
- transfer film
- substrate
- decorative layer
- 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
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- 239000000758 substrate Substances 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000010410 layer Substances 0.000 claims abstract description 189
- 239000012790 adhesive layer Substances 0.000 claims abstract description 76
- 238000010521 absorption reaction Methods 0.000 claims abstract description 50
- 230000005855 radiation Effects 0.000 claims abstract description 49
- 230000009471 action Effects 0.000 claims abstract description 5
- 238000004049 embossing Methods 0.000 claims description 34
- 239000004922 lacquer Substances 0.000 claims description 20
- 230000001681 protective effect Effects 0.000 claims description 15
- 239000000049 pigment Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 230000003213 activating effect Effects 0.000 claims description 5
- 230000002745 absorbent Effects 0.000 claims description 4
- 239000002250 absorbent Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000006229 carbon black Substances 0.000 claims description 2
- 238000001179 sorption measurement Methods 0.000 claims 1
- 230000004913 activation Effects 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 8
- 239000011888 foil Substances 0.000 abstract description 6
- 239000010408 film Substances 0.000 description 92
- 238000001465 metallisation Methods 0.000 description 15
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 12
- 230000001070 adhesive effect Effects 0.000 description 9
- 239000000853 adhesive Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
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- 239000004831 Hot glue Substances 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000003491 array Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 229920002689 polyvinyl acetate Polymers 0.000 description 2
- 230000010076 replication Effects 0.000 description 2
- 238000007738 vacuum evaporation Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 1
- FJWGYAHXMCUOOM-QHOUIDNNSA-N [(2s,3r,4s,5r,6r)-2-[(2r,3r,4s,5r,6s)-4,5-dinitrooxy-2-(nitrooxymethyl)-6-[(2r,3r,4s,5r,6s)-4,5,6-trinitrooxy-2-(nitrooxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-3,5-dinitrooxy-6-(nitrooxymethyl)oxan-4-yl] nitrate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O)O[C@H]1[C@@H]([C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@@H](CO[N+]([O-])=O)O1)O[N+]([O-])=O)CO[N+](=O)[O-])[C@@H]1[C@@H](CO[N+]([O-])=O)O[C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O FJWGYAHXMCUOOM-QHOUIDNNSA-N 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000011104 metalized film Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
- B41M5/035—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet by sublimation or volatilisation of pre-printed design, e.g. sublistatic
- B41M5/0358—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet by sublimation or volatilisation of pre-printed design, e.g. sublistatic characterised by the mechanisms or artifacts to obtain the transfer, e.g. the heating means, the pressure means or the transport means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/914—Transfer or decalcomania
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/14—Layer or component removable to expose adhesive
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/14—Layer or component removable to expose adhesive
- Y10T428/1486—Ornamental, decorative, pattern, or indicia
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/14—Layer or component removable to expose adhesive
- Y10T428/149—Sectional layer removable
- Y10T428/1495—Adhesive is on removable layer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T428/24843—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] with heat sealable or heat releasable adhesive layer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T428/24851—Intermediate layer is discontinuous or differential
- Y10T428/24868—Translucent outer layer
- Y10T428/24876—Intermediate layer contains particulate material [e.g., pigment, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2813—Heat or solvent activated or sealable
- Y10T428/2817—Heat sealable
Definitions
- the invention relates to a method for the area-wise transfer of the decorative layer of a transfer film comprising an adhesive layer that can be activated by radiation energy, from a carrier film for the decorative layer to a substrate, using an optionally heated embossing tool, wherein the adhesive layer is at least partially activated before the transfer film enters the embossing tool.
- the invention also relates to a transfer film which is particularly suitable for use in the transfer method according to the invention and which has on a carrier film a decorative layer consisting of a plurality of layers which, under the action of pressure and possibly heat, can be transferred in regions to a substrate, the surface of which is remote from the carrier film is formed by an adhesive layer that can be activated by radiation energy.
- the adhesive When transferring the decorative layer of a transfer film to a substrate, it is necessary for the adhesive to be activated sufficiently to achieve adequate adhesion of the decorative layer to the substrate.
- the time required for the activation of the adhesive layer decisively determines the throughput speed of the corresponding application machines.
- the decorative layer is transferred to the substrate, as usual, in the areas in which the embossing tool acts on the embossing film, it being provided in accordance with WO 96/37368 that the embossing tool is also heated.
- This procedure allows higher machine speeds.
- the adhesive is preheated too much, the clean, area-specific expression of the decorative layer on the substrate will cause difficulties, because the decorative layer does not only affect the areas in which the embossing tool acts on it Substrate adheres, but possibly also outside these areas, if the adhesive already has a sufficiently high adhesive effect.
- This problem can occur in particular in the case of comparatively thick decorative layers or decorative layers which have a relatively high mechanical stability, for example showing a metallization.
- EP 0 741 370 B1 discloses a method for applying a security element to a substrate, in which the adhesive layer is brought into contact with the substrate and is locally heated by supplying energy through the layer composite, ie through the decorative layer, thereby achieving The aim is that the decorative layer only adheres to the heated areas on the substrate without destroying any structures of the decorative layer.
- either laser radiation or light sources are used to supply energy.
- a laser beam can be guided according to the desired pattern.
- light sources either masks or exposure with addressable arrays made of laser or light-emitting diodes are used.
- This known method certainly has the advantage that a very clean transfer of the decorative layer of a transfer film from the carrier film of the transfer film to a substrate is possible only in certain areas, with the aim of protecting the eventual Structures in the decorative layer are largely dispensed with the use of pressure when transferring to the substrate.
- a disadvantage of the known procedure can be seen in the fact that relatively low working speeds must be expected. When using masks or diode arrays, it may even be necessary to move the transfer film and the substrate step by step so that the mask or the array remains stationary relative to the transfer film during the time required for the activation of the adhesive layer.
- the invention is based on the object of proposing a method and a transfer film which is particularly suitable for carrying out this method, in which on the one hand there is the possibility of increasing the machine speed by preactivating the adhesive layer, but at the same time it is ensured that the decorative layer of the transfer film is transferred cleanly only in the areas that are actually to be transferred.
- the present invention proposes that preheating - similar to the basic proposal of EP 0 741 370 B1 - only area by area, but it is important that preheating actually takes place before entering the embossing tool.
- it is not only activated with the adhesive but also simultaneously by means of a corresponding one
- Embossing tool ie using the appropriate pressure. Due to the additional application of pressure, it can very often be achieved that a comparatively low radiation energy is sufficient to preactivate the adhesive to such an extent that the machine speed can be increased significantly. At the same time, the preactivation of the adhesive layer ensures that the embossing is clean, depending on the area, because the working conditions can easily be selected in such a way that the decorative film only adheres to the substrate via the adhesive layer where the adhesive layer was actually preheated.
- a transfer film is used in the method according to the invention, the decorative layer of which only has an absorption layer in the surface areas to be transferred to the substrate, which absorbs the radiation energy which activates the adhesive layer.
- the transfer film is thus advantageously designed such that it has an additional layer in the surface areas to be transferred, namely the
- Absorbent layer comprises. Only in the area of this absorption layer, which absorbs the radiation energy accordingly - and of course must transfer it to the adhesive layer - is the adhesive layer preactivated, which means that the adhesive layer can only be preactivated in the desired areas without any special equipment .
- the use of specially guided laser beams and masks or diode arrays, which are provided in accordance with EP 0 741 370 B1, can be dispensed with according to the invention.
- the effect of the area-wise activation can be improved in particular in the case of a transfer film whose decorative layer is partially provided with an absorption layer if the radiation energy activating the adhesive layer acts on the decorative layer only in the surface areas which are intended for transfer to the substrate, the radiation energy activating the adhesive layer advantageously or the like via a mask. just acts on the surface areas of the decorative layer and adhesive layer to be transferred to the substrate.
- Heat radiation activatable adhesive layer is used, i.e. a so-called hot melt adhesive, which softens under heat and becomes sticky.
- Laser radiation can possibly be deflectable according to the surface areas to be transmitted.
- the use of laser radiation has the advantage that short heating times can be achieved if the laser energy is high enough.
- the method according to the invention provides that the adhesive layer of the decorative layer is only preactivated before the transfer film enters the embossing tool and a heated embossing tool is used to fully activate the adhesive layer. This procedure allows relatively high machine speeds. It can
- Embossing tool act both over a large area or over the entire surface, or only in the areas in which the layers forming the decorative layer are to be transferred to the substrate.
- the invention further relates to a transfer film, preferably a hot stamping film, which is particularly, but not exclusively, suitable for the method explained above.
- This transfer film which has a decorative layer consisting of several layers on a carrier film, which can be transferred under the action of pressure and possibly heat, to a substrate, the surface of which is turned away from the carrier film is formed by an adhesive layer that can be activated by radiation energy according to the invention in that the decorative layer has an absorption layer only in predetermined surface areas intended for transfer to the substrate, which absorbs the radiation energy which brings about activation of the adhesive layer.
- the peculiarity of the transfer film according to the invention is thus that an absorption layer is present in some areas in the decorative layer, which serves to absorb radiation energy used to activate the adhesive layer and in this way to ensure activation of the adhesive layer.
- transfer film is used in the method described at the outset, it is particularly easy to achieve a clean demarcation of the areas of the decorative layer to be transferred.
- the transfer film according to the invention can - regardless of the method explained - also be used, for example, by activating the adhesive layer exclusively via the absorption layer.
- relatively finely structured areas can be equipped with the absorption layer. Even with large-area irradiation and the use of large-area embossing tools, it is nevertheless achieved that only the areas of the decorative layer assigned to the absorption layer are actually transferred to the substrate.
- EP 0 741 370 B1 When using a transfer film according to the invention, the effect sought with EP 0 741 370 B1 can thus be achieved with very simple means, in particular not adapting the embossing device used for transferring the decorative layer to the substrate to the specific design of the transferring areas of the decorative layer is required.
- the absorption layer is provided immediately after the adhesive layer of the decorative layer. Understandably, the pigments or other additives that the absorption layer must contain in order to be able to absorb the radiation energy accordingly do not always meet the requirements with regard to the graphic or optical design of the decorative layer.
- heat radiation eg IR radiation
- the decorative layer on the side of the absorption layer facing the carrier film has an opaque decorative layer covering it after the transfer of the decorative layer to a substrate, which expediently has a , preferably a reflective layer having a diffraction-optical structure, in particular a metal layer.
- a reflective layer having a diffraction-optical structure, in particular a metal layer.
- a reflection layer to cover the absorption layer, which in use forms the exposed surface of the decorative layer
- the surface of the decorative layer facing the carrier film is formed by a transparent protective lacquer layer, i.e. in other words, the reflective layer is covered by such a protective lacquer layer.
- a protective lacquer layer improves the mechanical resistance and in particular protects any diffraction-optically active, i.e. very fine structures.
- the absorption layer absorbs heat radiation
- the adhesive layer is formed by a heat-activatable material which is permeable to the heat radiation absorbed by the absorption layer.
- This design is particularly favorable if a reflective layer is present on the side of the decorative layer that is visible during use, which prevents penetration of the radiation used for activation. If in such a case the adhesive layer for the from the
- the transfer film can be irradiated from the adhesive side. This also has the advantage that the radiation is not unnecessarily weakened by the carrier film.
- the formation with a transparent adhesive layer and an absorption layer separated therefrom also has the technological advantage that the additives present in the absorption layer do not impair the adhesive effect of the adhesive layer.
- Absorbent layer is formed by a lacquer layer containing the pigments used to activate the radiation energy absorbing radiation energy.
- the pigments used to activate the radiation energy absorbing radiation energy For example, carbon black, black or dark pigments, etc. come into consideration as pigments.
- a heat-activatable adhesive layer it is advisable to work with infrared radiation for activation, in which case the configuration is preferably such that the absorption layer absorbs infrared radiation of a wavelength for which the adhesive layer is permeable.
- Figure 1a shows a schematic section through part of a transfer film
- Figure 1 b schematically and in section the transfer process using a film according to Figure 1a;
- Figure 2a to 2c schematically based on a partial section through a
- FIG. 3 schematically device and method for transmitting the
- Decorative layer from a transfer film on a substrate Decorative layer from a transfer film on a substrate.
- the transfer film shown schematically in FIG. 1a is a film which, in its basic structure, corresponds to a conventional hot stamping film, such as that used, for example, to generate security features on bank notes, securities or the like.
- a conventional hot stamping film such as that used, for example, to generate security features on bank notes, securities or the like.
- the hot stamping foil on the one hand has a metallization and on the other hand has a diffractive optically effective spatial structure.
- the transfer film according to FIG. 1a usually comprises a carrier film 1, for example a polyester film with a thickness between 10 and 25 ⁇ m.
- a release layer 2 which is known per se and which, in particular when exposed to heat, is intended to facilitate the detachment of the decorative layer, designated overall by 3, from the carrier film 1.
- the release layer 2 is usually applied over the entire surface.
- the decorative layer 3 consists of four layers, namely a transparent protective lacquer layer 4, a metal layer 5 which is usually vapor-deposited thereon, an absorption layer 6 provided in certain areas and an activatable adhesive layer 7, it being assumed that the adhesive layer 7 is concerned a hot-melt adhesive layer.
- the protective lacquer layer 4 and the hot-melt adhesive layer 7 and the metallization 5 are each provided over the entire surface in the exemplary embodiment in FIG. 1a.
- the film according to FIG. 1a is a film used, for example, for the production of security elements.
- the film is provided in the areas of the absorption layer 6 with a spatial structure 8 that has an optical diffraction effect.
- the film according to FIG. 1, which is also used in FIG. 1b, is produced as follows:
- the full-surface release layer 2 is first applied to the carrier film 1 in a layer thickness of approximately 0.01 to 0.1 ⁇ m in a printing or coating process.
- the protective lacquer layer 4 is then also applied over the entire surface and in a layer thickness of 0.8 to 2.5 ⁇ m, preferably 1.2 to 1.7 ⁇ m.
- the transparent protective lacquer 4 has the property that it can be structured accordingly by means of suitable embossing tools, so-called matrices.
- the spatial structure 8 is thus embossed into the free surface of the protective lacquer 4 in a replication process.
- Corresponding diffractive or diffractive structures are generally known and are explained, for example, in EP 0 741 370 B1.
- the entire free surface of the protective lacquer layer 4 is then provided with a metallization 5.
- a metallization 5 In general, vacuum evaporation with aluminum takes place with layer thicknesses of 5 to 200 nm.
- the absorption layer 6 which is only provided in certain areas, is then applied to the metallization 5 in the areas in which the decorative layer 3 is to be transferred to a substrate.
- the absorption layer is expediently an activatable decorative lacquer which has a layer thickness of 0.8 to 2.8 ⁇ m, preferably of about 1.5 ⁇ m, is applied. It is expedient to apply the absorption layer 6 in register form to the structuring 8, as is indicated in FIG. 1a.
- the last step is then to apply the entire surface of the adhesive layer 7, a material which is transparent to infrared radiation being expediently used for the adhesive layer 7, provided the absorption layer 6 is able to absorb infrared radiation accordingly.
- the adhesive layer 7 is applied in a layer thickness of 2 to 10 ⁇ m, preferably 3 to 5 ⁇ m.
- the individual layers can be composed as follows:
- Peeling layer 2 (layer thickness approx. 0.01 to 0.1 ⁇ m)
- Protective lacquer layer 4 (layer thickness 0.8 to 2.5 ⁇ m, preferably 1.2 to 1.7 ⁇ m)
- Absorbent layer 6 (layer thickness 0.8 to 2.8 ⁇ m, preferably 1.5 ⁇ m)
- Extender (aluminum silicate) 22 g
- IR-activatable pigment 46 g (flame soot, pigment black 7)
- Adhesive layer 7 (layer thickness 2.0 to 10.0 ⁇ m, preferably 3.0 to 5.0 ⁇ m)
- the adhesive 7 in to activate or at least to pre-activate the areas 10 so that after the decorative layer 3 has been irradiated, the adhesive layer 7 is already sticky in the areas 10 in accordance with the arrows 9.
- FIG. 1 b shows how a film according to FIG. 1 a can be transferred to a substrate 11.
- the transfer film is applied to the surface 12 of the substrate 11 to be decorated. This can be done, for example, by means of a heated or unheated embossing roller, which can in any case bring about large-area pressure.
- the decorative layer 3 of the transfer film is subjected to radiation energy which is absorbed in the absorption layer 6 and at least preactivates the adhesive layer 7 in the regions 10.
- Hot stamping foil shown which differs from the transfer foil according to FIG. 1a in that the metallization 5 'is only present in the areas in which there is also a spatial structure 8'.
- the film according to FIG. 2 c is therefore a so-called partially metallized film.
- the film according to FIG. 2c also comprises a carrier film 1 ', a release layer 2', a transparent protective lacquer layer 4 ', an absorption layer 6' which is only provided in certain areas and an all-over adhesive layer 7 '. Due to its partial metallization, the film according to FIG. 2c is particularly suitable only in the areas of the spatial structure 8 'for certain areas of application.
- the partial metallization in such a way that, after the decorative layer 3 'of the film in FIG. 2c has been applied to a substrate, the optical effect generated by the spatial structuring 8', for example a holographic effect or a color change effect, is clearly visible, on the other hand however, the background formed by the substrate surface and its pattern still remain recognizable. In this way you can e.g. a photo, alphanumeric information or the like. can still be seen on the substrate, although the partially metallized decorative layer 3 'is present in the same area.
- the optical effect generated by the spatial structuring 8' for example a holographic effect or a color change effect
- the transfer film, in particular hot stamping film, of FIG. 2c is produced using a special lacquer for the absorption layer 6 '.
- the absorption layer 6 ' has the same function as a resist, which allows the metal layer 5 to be etched away in the areas not covered by the absorption layer 6'.
- a release layer 2 ′ in is first placed on a carrier film 1 ′ of similar thickness and configuration, as mentioned in connection with FIG the usual layer thickness of 0.01 to 0.1 microns applied. Then the full-surface application of the protective lacquer 4 'takes place, possibly the replication of the structure 8' and finally the metallization by vacuum evaporation with aluminum, everything as described in connection with Figure 1a.
- the absorption layer 6 ' is then printed onto the metallization 5 only in the areas in which the metal layer 5' is to be retained, in accordance with the explanation given in connection with FIG. 1a.
- the absorption layer 6 ' is composed such that it is suitable for a subsequent etching process. After the absorption layer 6 'has hardened correspondingly, the regions of the aluminum layer or, respectively, which are not covered by the absorption layer 6' serving as resist lacquer are then
- Metallization 5 etched off.
- a bath of 5% sodium hydroxide solution with a bath temperature of 20 to 50 ° C can be used for etching.
- the etching process is indicated by the arrows 15 in FIG. 2b.
- the corresponding surface of the film is washed, dried and then the full-surface adhesive layer 7 'is applied.
- compositions of the various layers mentioned in the example can also be used if the release layer 2, the protective lacquer layer 4, the absorption layer 6 and the adhesive layer 7, in accordance with the respective purposes.
- the compositions of the various layers mentioned in the example can also be used if the
- Absorption layer according to FIGS. 2a to 2c should simultaneously take on the function of a resist for etching off the metallization. It can therefore be assumed that the different layers 2, 2 '; 4, 4 '; 6, 6 'and 7, 7' in the exemplary embodiments in FIGS. 1a and 2a to 2c, on the other hand, are composed essentially identically.
- the application of the film of the second exemplary embodiment according to FIG. 2c essentially corresponds to the use of the film of FIG. 1a described by way of example with reference to FIG. 1b.
- the device shown in FIG. 3 is a device for the continuous decoration of a substrate, for example a paper web 17, from a supply roll, not shown, or as a sheet from a stack in the direction of arrow 18, a gap 19 between a counter-pressure roller 20 and the actual, assumed full-surface embossing cylinder 21, which can be heated, for example, to a temperature of 80 to 120 ° C, is supplied.
- a substrate for example a paper web 17, from a supply roll, not shown, or as a sheet from a stack in the direction of arrow 18, a gap 19 between a counter-pressure roller 20 and the actual, assumed full-surface embossing cylinder 21, which can be heated, for example, to a temperature of 80 to 120 ° C, is supplied.
- a transfer film 22 is introduced into the gap 19 and is unwound in the direction of arrow 23 from a supply roll, also not shown in FIG.
- the decorative layer 3, 3 'of the transfer film 22 is pressed in the gap 19 under the action of the embossing cylinder 21 and the counter-pressure roller 20 against the substrate, for example the paper web 17, and, if the adhesive layer of the transfer film 22 is activated accordingly, onto the transfer film 22 facing surface of the paper web 17 transferred.
- the carrier film 1, 1 ' is then guided away from the substrate 17 with the aid of a detaching finger 13 (see FIG. 1b), the decorative layer 3, 3' in the areas in which there is a corresponding activation of the adhesive layer 7, 7 'has occurred, adheres to the substrate 17, while in the regions in between the decorative layer 3, 3' adheres to the carrier film 1, 1 'and is peeled off with it, so that a corresponding the substrate surface is decorated in regions (see FIG. 1b).
- the area-by-area transfer of a decorative layer from a transfer film to a substrate has generally been carried out in such a way that the embossing cylinder has correspondingly projecting structures or in the areas in which the template is to be transferred to the substrate
- the transfer film 22 can be preheated by means of appropriate emitters before it enters the embossing gap 19.
- radiators 24a and 24b are also provided in the device according to FIG. 3.
- the emitters are expediently infrared emitters, and it has been shown in practice that, for example, double emitters of the type SMBG 2600/150 G from Heraeus / Hanau are very suitable, the two channels of which are heated and provided with a gold reflector.
- the output of the spotlights can be around 1,000 W, for example.
- the emitters are advantageously attached at a distance of 20 to 40 mm from the transfer film, specifically on the side of the film which bears the decorative layer 3, 3 '.
- the adhesive layer 7, 7 ' is transparent to infrared radiation, it can be achieved in this way, even if partial or complete metallization is provided, that a very high proportion of the radiation is absorbed in the absorption layer 6.
- the exact distance of the IR emitters from the transfer film must be determined using suitable tests - depending on the exact composition of the adhesive layer and the surface quality of the substrate to be decorated.
- two IR radiators 24a and 24b are one behind the other (in Running direction of the transfer film 22) is provided, the arrangement being expedient such that the second radiator 24b is located at a distance a of 40 to 70 mm from the gap 19 between the embossing cylinder 21 and the counter-pressure roller 20.
- the first radiator 24a should expediently be arranged at a distance b of approximately 40 mm in the direction of movement of the transfer film 22 in front of the second radiator 24b.
Landscapes
- Decoration By Transfer Pictures (AREA)
- Labeling Devices (AREA)
- Holo Graphy (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19921579 | 1999-05-10 | ||
DE19921579A DE19921579C2 (de) | 1999-05-10 | 1999-05-10 | Verfahren zur bereichsweisen Übertragung der Dekorlage einer Transferfolie auf ein Substrat sowie hierfür geeignete Transferfolie |
PCT/DE2000/001302 WO2000068013A1 (de) | 1999-05-10 | 2000-04-22 | Verfahren zur bereichsweisen übertragung der dekorlage einer transferfolie auf ein substrat sowie hierfür geeignete transferfolie |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1097042A1 true EP1097042A1 (de) | 2001-05-09 |
EP1097042B1 EP1097042B1 (de) | 2003-07-09 |
Family
ID=7907641
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00940147A Expired - Lifetime EP1097042B1 (de) | 1999-05-10 | 2000-04-22 | Verfahren zur bereichsweisen übertragung der dekorlage einer transferfolie auf ein substrat sowie hierfür geeignete transferfolie |
Country Status (13)
Country | Link |
---|---|
US (1) | US6531016B1 (de) |
EP (1) | EP1097042B1 (de) |
JP (1) | JP3617625B2 (de) |
CN (1) | CN1174865C (de) |
AT (1) | ATE244637T1 (de) |
AU (1) | AU758536B2 (de) |
BR (1) | BR0006109A (de) |
CA (1) | CA2336854C (de) |
DE (2) | DE19921579C2 (de) |
ES (1) | ES2202140T3 (de) |
PT (1) | PT1097042E (de) |
RU (1) | RU2200673C2 (de) |
WO (1) | WO2000068013A1 (de) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10109519A1 (de) * | 2001-02-28 | 2002-09-05 | Giesecke & Devrient Gmbh | Prägefolie, Verfahren zur Herstellung der Prägefolie und zur Übertragung eines Etiketts von der Prägefolie auf ein Substrat |
DE10338732A1 (de) * | 2003-08-22 | 2005-03-24 | Giesecke & Devrient Gmbh | Kartenförmiger Mehrschichtverbund |
EP1846242B1 (de) * | 2005-02-04 | 2013-11-20 | manroland sheetfed GmbH | Folienführung für eine prägeeinrichtung |
DE102006056010C5 (de) | 2005-11-23 | 2024-01-11 | Homag Holzbearbeitungssysteme Ag | Vorrichtung zur Beschichtung von Bauteilen |
CN101687431A (zh) * | 2007-03-26 | 2010-03-31 | 德麦克兹有限公司 | 将附着于薄膜的装饰物施加到物体上的装置和方法 |
FR2915810B1 (fr) * | 2007-05-04 | 2009-06-12 | Saint Gobain | Vitrage decoratif nanostructure |
DE102007027493B3 (de) * | 2007-06-14 | 2008-08-07 | Leonhard Kurz Gmbh & Co. Kg | Verfahren zur Erhöhung der Ausbeute einer Transferfolie beim Prägen und dafür geeignete Vorrichtung |
DE202007011911U1 (de) | 2007-08-24 | 2009-01-08 | Rehau Ag + Co | Kantenleiste für Möbelstücke |
GB0809135D0 (en) | 2008-05-20 | 2008-06-25 | British American Tobacco Co | Apparatus and method for making a smoking article |
EP2163397A1 (de) * | 2008-09-12 | 2010-03-17 | DeMaxZ AG | Vorrichtung zum Aufbringen eines lösbar an einem Trägerfilm haftenden Dekors auf ein Objekt |
CN101886353A (zh) * | 2009-05-13 | 2010-11-17 | 李华容 | 一种包含防伪线的防伪材料及其制作方法 |
US20110024019A1 (en) * | 2009-07-31 | 2011-02-03 | Ged Integrated Solutions, Inc. | Decorative transfer method and apparatus |
US8460489B2 (en) | 2010-08-13 | 2013-06-11 | Ged Integrated Solutions, Inc. | Flexible film application for decorative coatings |
US9352512B2 (en) | 2011-04-13 | 2016-05-31 | Ged Integrated Solutions, Inc. | Flexible film heated roller |
JP5926083B2 (ja) * | 2012-03-27 | 2016-05-25 | 株式会社ミマキエンジニアリング | 転写方法及び転写装置 |
TWI718284B (zh) * | 2016-04-07 | 2021-02-11 | 美商零質量純水股份有限公司 | 太陽能加熱單元 |
TWI720328B (zh) * | 2018-07-16 | 2021-03-01 | 勤倫有限公司 | 可重複黏貼之刻字膜及其製法 |
DE102021001589A1 (de) * | 2021-03-25 | 2022-09-29 | Giesecke+Devrient Currency Technology Gmbh | Herstellungsverfahren für ein optisch variables Sicherheitselement |
Family Cites Families (11)
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US4123309A (en) * | 1973-11-29 | 1978-10-31 | Minnesota Mining And Manufacturing Company | Transfer letter system |
US4786537A (en) * | 1986-10-30 | 1988-11-22 | Minnesota Mining And Manufacturing Company | Self-weeding dry transfer article |
DE4307487C2 (de) * | 1993-03-10 | 1995-08-24 | Horst Sitte Heispraegetechnik | Heißprägefolie und Verfahren zu deren Herstellung |
DE4313521C1 (de) * | 1993-04-24 | 1994-06-16 | Kurz Leonhard Fa | Dekorationsschichtaufbau und dessen Verwendung |
US5518861A (en) * | 1994-04-26 | 1996-05-21 | E. I. Du Pont De Nemours And Company | Element and process for laser-induced ablative transfer |
DE4423291A1 (de) * | 1994-07-02 | 1996-01-11 | Kurz Leonhard Fa | Prägefolie, insbesondere Heissprägefolie mit Dekorations- oder Sicherungselementen |
JP3470411B2 (ja) * | 1994-09-29 | 2003-11-25 | 凸版印刷株式会社 | 不可視情報記録シール |
US5863860A (en) * | 1995-01-26 | 1999-01-26 | Minnesota Mining And Manufacturing Company | Thermal transfer imaging |
DE59503265D1 (de) * | 1995-05-05 | 1998-09-24 | Landis & Gyr Tech Innovat | Verfahren zum Aufbringen eines Sicherheitselementes auf ein Substrat |
GB9510430D0 (en) * | 1995-05-22 | 1995-07-19 | Molins Plc | Printing method and apparatus |
EP0965446B1 (de) * | 1998-06-16 | 2003-02-26 | Kba-Giori S.A. | Sicherheitsdruckmaschine zum Drucken von Wertpapieren |
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1999
- 1999-05-10 DE DE19921579A patent/DE19921579C2/de not_active Expired - Fee Related
-
2000
- 2000-04-22 ES ES00940147T patent/ES2202140T3/es not_active Expired - Lifetime
- 2000-04-22 JP JP2000617021A patent/JP3617625B2/ja not_active Expired - Fee Related
- 2000-04-22 AU AU55205/00A patent/AU758536B2/en not_active Ceased
- 2000-04-22 BR BR0006109-3A patent/BR0006109A/pt not_active IP Right Cessation
- 2000-04-22 CN CNB008008000A patent/CN1174865C/zh not_active Expired - Fee Related
- 2000-04-22 AT AT00940147T patent/ATE244637T1/de active
- 2000-04-22 US US09/720,497 patent/US6531016B1/en not_active Expired - Lifetime
- 2000-04-22 WO PCT/DE2000/001302 patent/WO2000068013A1/de active IP Right Grant
- 2000-04-22 EP EP00940147A patent/EP1097042B1/de not_active Expired - Lifetime
- 2000-04-22 CA CA002336854A patent/CA2336854C/en not_active Expired - Lifetime
- 2000-04-22 RU RU2001103747/12A patent/RU2200673C2/ru not_active IP Right Cessation
- 2000-04-22 PT PT00940147T patent/PT1097042E/pt unknown
- 2000-04-22 DE DE50002816T patent/DE50002816D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0068013A1 * |
Also Published As
Publication number | Publication date |
---|---|
CA2336854C (en) | 2006-04-18 |
CN1304361A (zh) | 2001-07-18 |
DE19921579C2 (de) | 2002-02-07 |
ATE244637T1 (de) | 2003-07-15 |
CA2336854A1 (en) | 2000-11-16 |
US6531016B1 (en) | 2003-03-11 |
CN1174865C (zh) | 2004-11-10 |
WO2000068013A1 (de) | 2000-11-16 |
ES2202140T3 (es) | 2004-04-01 |
DE50002816D1 (de) | 2003-08-14 |
PT1097042E (pt) | 2003-11-28 |
JP3617625B2 (ja) | 2005-02-09 |
AU758536B2 (en) | 2003-03-27 |
DE19921579A1 (de) | 2000-11-16 |
RU2200673C2 (ru) | 2003-03-20 |
AU5520500A (en) | 2000-11-21 |
EP1097042B1 (de) | 2003-07-09 |
JP2002544068A (ja) | 2002-12-24 |
BR0006109A (pt) | 2001-04-03 |
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