EP1097042B1 - 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 transferfolie Download PDFInfo
- Publication number
- EP1097042B1 EP1097042B1 EP00940147A EP00940147A EP1097042B1 EP 1097042 B1 EP1097042 B1 EP 1097042B1 EP 00940147 A EP00940147 A EP 00940147A EP 00940147 A EP00940147 A EP 00940147A EP 1097042 B1 EP1097042 B1 EP 1097042B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- transfer film
- adhesive layer
- 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.)
- Expired - Lifetime
Links
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Images
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 transmission of one decorative layer comprising radiation layer which can be activated by radiation energy a transfer film from a carrier film for the decorative layer on a substrate using an optionally heated embossing tool, the At least the adhesive layer before the transfer film enters the embossing tool is partially activated.
- the invention also relates to a transfer film for use in the transfer method according to the invention, which is on a carrier film one consisting of several layers, under the influence of pressure and possibly Has heat in some areas transferable to a substrate decorative layer, the surface facing away from the carrier film from a surface caused by radiation energy activatable adhesive layer is formed, and the one absorption layer comprises which causes the activation of the adhesive layer Radiant energy absorbed.
- the adhesive When transferring the decoration of a transfer film onto a substrate, it is necessary that the adhesive is activated sufficiently to achieve sufficient adhesion of the decoration layer on 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 stamping tool acts on the stamping film, it being provided in accordance with WO 96/37368 that the stamping tool is also heated.
- EP 0 741 370 B1 describes a method for applying a Security element known on a substrate in which the adhesive layer with brought into contact with the substrate and by supplying energy through the Layered composite, i.e. through the decorative layer, is locally heated, whereby should be achieved that the decorative layer only in the heated areas on the Substrate adheres without destroying any of the decor day structures become.
- a Security element known on a substrate in which the adhesive layer with brought into contact with the substrate and by supplying energy through the Layered composite, i.e. through the decorative layer, is locally heated, whereby should be achieved that the decorative layer only in the heated areas on the Substrate adheres without destroying any of the decor day structures become.
- EP 0 741 370 B1 either Laser radiation or light sources used. A laser beam can be used accordingly the desired pattern.
- light sources either on masks or on exposure with addressable arrays made of laser or light emitting diodes.
- DE-A 4 307 487 describes a hot stamping foil and a method for the same Manufacturing known.
- the well-known hot stamping foil has a full surface Decorative layer as well as a full-surface adhesive layer.
- the adhesive layer in blind areas in certain areas is the The required adhesion is removed from a workpiece, the blind zones can be generated in different ways, for example by a corresponding side of the adhesive layer separating layer or through hardened areas of the adhesive layer.
- DE-C 43 13 521 a decorative layer structure and a such a layer structure having hot stamping foil described, with the inner surface of a top coat layer at least in some areas diffraction-optically effective, spatial structure is provided, which in turn in Areas with a decorative lacquer layer before the spatial Structure optically well visible reflective layer is attached. This gives the finished product the impression that the spatial structure is only present in certain areas.
- the invention is based on the object, a method and a Carrying out this procedure to propose suitable transfer film at which, on the one hand, have the option of preactivating the adhesive layer increase the machine speed, but at the same time it is guaranteed that a clean transfer of the decorative layer of the transfer film even in the Areas that are actually to be transferred.
- the transfer film is designed so that it is in the to be transferred Surface areas an additional layer, namely the absorption layer includes. Only in the area of this absorption layer, which the Absorbs radiation energy accordingly - and of course to the adhesive layer must be transferred - the adhesive layer is then preactivated, whereby on can be achieved in this way without any special outlay on equipment, that the adhesive layer actually only in the desired areas is preactivated.
- the use of specially guided Laser beams, as well as masks or diode arrays, which according to EP 0 741 370 B1 are provided, can be dispensed with according to the invention.
- the effect of the area-wise activation can be with a transfer film whose Decorative layer is partially provided with an absorption layer, still can be improved if the radiation energy activating the adhesive layer only acts on the decorative layer in the surface areas that are to be transferred are determined on the substrate, the activating the adhesive layer Radiation energy advantageously or the like through a mask. only on the on the substrate areas of the decorative layer to be transferred and Acts adhesive layer.
- the Laser radiation when using a heat-activatable adhesive layer, it can be favorable to use laser radiation for activation, the Laser radiation, if necessary, according to the area to be transferred can be distractible.
- the use of laser radiation has the advantage that short warming times can be achieved if the Laser energy is high enough.
- the Adhesive layer of the decorative layer before the transfer film enters the embossing tool is only pre-activated and to activate the adhesive layer completely heated stamping tool is used. This procedure allows relatively high machine speeds. It can Embossing tool act both over large areas or over the entire surface, or only in the Areas in which the layers forming the decorative layer on the substrate should be transferred.
- the invention further relates to a transfer film, preferably one Hot stamping foil which is suitable for the method explained above.
- This Transfer film which on a carrier film one of several layers existing areas under the influence of pressure and possibly heat Has substrate transferable decorative layer, the opposite of the carrier film Surface of an adhesive layer that can be activated by radiation energy is formed and which comprises an absorption layer which the one Absorbs radiation energy causing activation of the adhesive layer, is characterized according to the invention in that the absorption layer only in predetermined, intended for transfer to the substrate Surface areas is provided.
- the special feature of the transfer film according to the invention is that there is only an absorption layer in some areas in the decorative layer, which serves to activate radiation energy used to activate the adhesive layer absorb and in this way for activation of the adhesive layer only in the area areas to be transferred.
- the process is particularly easy to define clearly reach the transferring areas of the decorative layer.
- the transfer film according to the Invention can also can be used, for example, by using the adhesive layer exclusively the absorption layer is activated. Leave in such a transfer film relatively finely structured areas with the absorption layer equip. Even with large-area radiation and use of large areas Embossing tools can then still be reached that actually only those of Areas of the decorative layer assigned to the absorption layer on the substrate be transmitted.
- the absorption layer immediately after the Adhesive layer of the decorative layer is provided.
- the pigments or other additives that correspond to the Absorbent layer must contain the radiation energy accordingly to be able to absorb, not always the requirements regarding graphic or optical design of the decorative layer. If with Heat radiation, e.g. IR radiation that is being worked on contains the Absorbent layer generally dark, optically unappealing Pigments or the like.
- the decorative layer on the Carrier film facing side of the absorption layer one after the Transfer of the decorative layer to an opaque substrate covering
- Has decorative layer which expediently one, preferably one reflective layer having a diffractive optical structure, in particular a metal layer.
- there is a one diffraction optically effective structure having reflection layer very interesting design solutions are realized.
- the surface facing the carrier film Decorative layer is formed by a transparent protective lacquer layer, i.e. With in other words, the reflective layer through such a protective lacquer layer is covered.
- a protective lacquer layer improves the mechanical Resistance and especially protects any diffraction optics that may be present effective, i.e. very fine structures.
- the absorption layer is heat radiation absorbed, while the adhesive layer of a heat-activated, for the Permeable heat radiation absorbed by the absorption layer Material is formed.
- This training is especially favorable when on the on the visible side of the decorative layer there is a reflective layer is that prevents the penetration of the radiation used for activation.
- the adhesive layer for the from the Absorption layer absorbed heat radiation is permeable, the The transfer film is irradiated from the adhesive side.
- This also has the advantage that the radiation is then unnecessary through the carrier film is weakened.
- Training with a transparent adhesive layer and an absorption layer separate therefrom also brings the technological advantage that may be in the Absorbent layer existing additives the adhesive effect of the adhesive layer is not affected.
- the Absorbent layer of one used to activate the adhesive layer Paint layer containing radiation energy absorbing pigments formed is.
- the training is preferably such that the Absorbent layer absorbs infrared radiation of a wavelength for which the Adhesive layer is permeable.
- the transfer film shown schematically in FIG. 1a is a Foil
- the basic structure of a conventional hot stamping foil corresponds, for example, to the generation of security features Banknotes, securities or the like can be used with this Purpose the hot stamping foil on the one hand a metallization and on the other hand has a diffractive optically effective spatial structure.
- the transfer film according to FIG. 1a comprises a carrier film 1 in the usual way, for example a polyester film with a thickness between 10 and 25 microns.
- a release layer 2 known per se, which, especially when exposed to heat, the detachment of the total with 3 designated decorative layer of the carrier film 1 should facilitate.
- the Release layer 2 is usually applied over the entire surface.
- the decorative layer 3 consists of four in the illustrated embodiment Layers, namely a transparent protective lacquer layer 4, one on top of this usually vapor-deposited metal layer 5, a region provided absorption layer 6 and an activatable adhesive layer 7, it should be assumed that the adhesive layer 7 is a Hot glue layer is.
- the protective lacquer layer 4 and the hot-melt adhesive layer 7 and the metallization 5 are each in the exemplary embodiment in FIG. 1a provided over the entire area.
- the film according to FIG. 1a is a for example, film used for the production of security elements.
- the film is in the areas of the absorption layer 6 with a diffractive optical spatial structure 8 provided.
- the film according to FIG. 1, which is also used in FIG. 1b, is as follows produced:
- the full-surface release layer 2 is first in one Layer thickness of approx. 0.01 to 0.1 ⁇ m in a printing or coating process applied.
- the protective lacquer layer 4 is also over the entire surface and in one Layer thickness of 0.8 to 2.5 microns, preferably 1.2 to 1.7 microns, applied.
- the transparent protective lacquer 4 has the property that it suitable embossing tools, so-called matrices, can be structured accordingly.
- the next step is thus the spatial structure 8 in one Replication process impressed into the free surface of the protective lacquer 4.
- Appropriate diffractive or diffractive structures are generally known and explained for example in EP 0 741 370 B1.
- the entire structure becomes free
- the absorption layer 6 provided only in certain areas applied.
- the absorption layer is expediently one activatable decorative lacquer with a layer thickness of 0.8 to 2.8 ⁇ m, preferably of about 1.5 microns is applied. It is appropriate that Applying the absorption layer 6 in register with the structuring 8, such as this is indicated in Figure 1a.
- the last step is then to apply the entire surface of the adhesive layer 7, expediently a material transparent to infrared radiation for the Adhesive layer 7 is used, provided the absorption layer 6 is able to Absorb infrared radiation accordingly.
- the adhesive layer 7 is in a layer thickness of 2 to 10 ⁇ m, preferably 3 to 5 ⁇ m, applied.
- the individual layers can be composed as follows:
- Dispersing additive 13 g silica 4 g Extender (aluminum silicate) 22 g IR-activatable pigment (soot, pigment black 7) 46 g Adhesive layer 7 (layer thickness 2.0 to 10.0 ⁇ m, preferably 3.0 to 5.0 ⁇ m) MEK 280 g toluene 350 g PVC / PVAC copolymer (mp 80 ° C) 210 g Thermoplastic polyurethane (d 1.18 g / cm3) 130 9 Silicic acid, hydrophobic (particle size approx. 10 ⁇ m) 60 g
- the absorption layer 6 of the transfer film according to FIG. 1a has the task radiation energy incident on the decorative layer 3 of the film (schematically indicated by the arrows 9) and absorb the stored Radiation energy to the adhesive layer 7 in the to the absorption layer 6 Submit subsequent areas 10 to in this way the adhesive 7 in to activate the areas 10 or at least to pre-activate them, so that after Irradiation of the decorative layer 3 according to the arrows 9, the adhesive layer 7 in the areas 10 is already sticky.
- FIG. 1b shows how a film 1a can be transferred to a substrate 11. It is over For the sake of simplicity, it is not shown how the transfer film is attached to the surface 12 of the substrate 11 to be decorated is applied. This can for example by means of a heated or unheated embossing roller happen, which can in any case cause large-scale pressure.
- FIG. 2c is essentially the same as FIG. 1a Hot stamping foil shown, which however differs from the transfer foil according to the figure 1a differs in that the metallization 5 'only in the areas is present, in which there is also a spatial structure 8 '. It So the film according to FIG. 2c is a so-called partially metallized one Foil.
- the film according to FIG. 2c also comprises a carrier film 1 ', a Release layer 2 ', a transparent protective lacquer layer 4', only one Absorption layer 6 'provided in some areas and a full-area Adhesive layer 7 '.
- the film according to FIG. 2c is due to its partial metallization only in the areas of spatial structure 8 'for certain Areas of application particularly suitable.
- the Form partial metallization so that after application of the decorative layer 3 ' 2c film on a substrate on the one hand by the spatial Structuring 8 'produced optical effect, for example a holographic Effect or a color change effect that is clearly visible, but on the other hand that of the substrate formed and its pattern still remain recognizable.
- optical effect for example a holographic Effect or a color change effect that is clearly visible, but on the other hand that of the substrate formed and its pattern still remain recognizable.
- the production of the transfer film, in particular hot stamping film, of Figure 2c takes place using a special lacquer for the absorption layer 6 '.
- the absorption layer 6 ' namely at the same time the function of a resist varnish, which etches away the metal layer 5 allowed in the areas not covered by the absorption layer 6 '.
- FIG. 2a illustrates, in accordance with the manufacturing process of the film 1a first on a carrier film 1 'of similar thickness and Formation, as mentioned in connection with FIG. 1a, of a release layer 2 ' applied in the usual layer thickness of 0.01 to 0.1 ⁇ m. Then the full application of the protective lacquer 4 ', 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 metallization 5 is then only in the areas where the Metal layer 5 'is to be retained, the absorption layer 6' accordingly printed on the explanation given in connection with Figure 1a.
- the absorption layer 6 ' is composed such that it is suitable for one subsequent etching process is suitable. After hardening the Absorbent layer 6 'are then those of the one serving as resist resist Absorbent layer 6 'covered areas of the aluminum layer or Metallization 5 etched off. A bath of 5% sodium hydroxide solution can be used for etching a bath temperature of 20 to 50 ° C can be used. The etching process is in Figure 2b indicated by the arrows 15.
- the corresponding surface of the film is washed, dried and then applied the full-surface adhesive layer 7 '.
- compositions of the different layers namely the release layer 2, the protective lacquer layer 4, the absorption layer 6 and the adhesive layer 7, in adaptation to the to choose and vary the respective application.
- the compositions of the different layers can also be used if the Absorption layer according to Figure 2a to 2c simultaneously the function of a Resist varnish for etching the metallization. So it can it is assumed that the different layers 2, 2 '; 4, 4 '; 6, 6 'and 7, 7' in the exemplary embodiments of FIGS. 1a and 2a to 2c on the other hand in are composed essentially identically.
- the application of the film of the second exemplary embodiment according to FIG. 2c corresponds essentially to that described by way of example in FIG. 1b How to use the film of Figure 1a.
- the device shown in FIG. 3 is a device for the continuous decoration of a substrate, for example one Paper web 17, from a supply roll, not shown, or as a sheet of a stack in the direction of arrow 18 a gap 19 between one Counter-pressure roller 20 and the actual, assumed full-area Embossing cylinder 21, for example at a temperature of 80 to 120 ° C. can be heated, is supplied.
- a substrate for example one Paper web 17, from a supply roll, not shown, or as a sheet of a stack in the direction of arrow 18 a gap 19 between one Counter-pressure roller 20 and the actual, assumed full-area Embossing cylinder 21, for example at a temperature of 80 to 120 ° C. can be heated, is supplied.
- a transfer film 22 is inserted into the gap 19 at the same time
- Direction of arrow 23 of a supply roll, also not shown in FIG. 3 is handled.
- the decorative layer 3, 3 'of the transfer film 22 is in the gap 19 under the effect of Embossing cylinder 21 and the counter-pressure roller 20 against the substrate, for example, the paper web 17, pressed and, if the adhesive layer of Transfer film 22 is activated accordingly, pointing to the transfer film 22 Transfer surface of the paper web 17.
- the carrier film 1, 1 'with the aid of a Removal fingers 13 are guided away from the substrate 17, the Decorative layer 3, 3 'in the areas where a corresponding activation of the Adhesive layer 7, 7 'is done, adheres to the substrate 17, while in the areas in between the decorative layer 3, 3 'on the carrier film 1, 1' sticks and is pulled off with it, so that a corresponding the substrate surface is decorated in regions (see FIG. 1b).
- the area-wise transfer of a decoriage from one Transfer film on a substrate generally proceeded so that the Embossing cylinder in the areas where the template is on the substrate should be transferred, according to projecting structures or Has patterns.
- the preheating of the transfer film 22 can, as in WO 96/37368 is described, before entering the embossing gap 19 using appropriate emitters.
- radiators 24a and 24b are also in the device according to FIG intended.
- the emitters are expediently Infrared radiator, which has been shown in practice that, for example Double heater type SMBG 2600/150 G from Heraeus / Hanau are suitable, the two channels are heated and with a gold reflector are provided.
- the output of the spotlights can, for example, be around 1,000 W. lie.
- the emitters are conveniently at a distance of 20 to 40 Apply mm of the transfer film, on which the decorative layer 3, 3 ' load-bearing side of the film.
- the adhesive layer 7, 7 'for infrared radiation can be transparent in this way, even if a partial or full metallization is intended to be achieved at a very high level Portion of the radiation is absorbed in the absorption layer 6.
- the exact one The distance between the IR emitters and the transfer film must be based on suitable Trials - depending on the exact composition of the adhesive layer and the surface quality of the substrate to be decorated - be determined.
- FIG. 3 shows, two IR emitters 24a and 24b are one behind the other (in Direction of transfer film 22) provided, the arrangement It is expedient such that the second radiator 24b is at a distance a from 40 to 70 mm from the gap 19 between the embossing cylinder 21 and the Pressure roller 20 is located.
- the first radiator 24a should expediently at a distance b of approx. 40 mm in the direction of movement the transfer film 22 are arranged in front of the second radiator 24b.
Landscapes
- Decoration By Transfer Pictures (AREA)
- Labeling Devices (AREA)
- Holo Graphy (AREA)
Description
Um die Maschinengeschwindigkeit zu erhöhen, ist es aus der WO 96/37368 bereits bekannt, die wärmeaktivierbare Kleberschicht der Dekorlage einer Prägefolie vor dem eigentlichen Prägevorgang vorzuheizen, um so die Kleberschicht wenigstens teilweise zu aktivieren. Die Übertragung der Dekorlage auf das Substrat erfolgt bei dem bekannten Verfahren - wie üblich - in den Bereichen, in denen das Prägewerkzeug auf die Prägefolie einwirkt, wobei gemäss der WO 96/37368 vorgesehen ist, dass auch das Prägewerkzeug beheizt wird. Diese Vorgehensweise gestattet zwar höhere Maschinengeschwindigkeiten. Es besteht jedoch die Gefahr, dass beispielsweise dann, wenn der Kleber zu stark vorgeheizt wird, die saubere, bereichsweise Ausprägung der Dekorlage auf das Substrat Schwierigkeiten bereitet, weil die Dekorlage nicht nur in den Bereichen, in denen das Prägewerkzeug auf sie wirkt, an dem Substrat haftet, sondern eventuell auch ausserhalb dieser Bereiche, wenn der Kleber bereits eine hinreichend hohe Haftwirkung besitzt. Dieses Problem kann insbesondere bei vergleichsweise dicken Dekorlagen oder Dekorlagen auftreten, die eine verhältnismässig hohe mechanische Stabilität besitzen, beispielsweise eine Metallisierung zeigen.
- Figur 1a
- einen schematischen Schnitt durch einen Teil einer Transferfolie;
- Figur 1b
- schematisch und im Schnitt den Übertragungsvorgang unter Verwendung einer Folie gemäss Figur 1a;
- Figur 2a bis 2c
- schematisch anhand eines Teilschnitts durch eine Transferfolie ein spezielles Herstellungsverfahren und
- Figur 3
- schematisch Vorrichtung und Verfahren beim Übertragen der Dekorlage von einer Transferfolie auf ein Substrat.
Ablöseschicht 2 (Schichtstärke ca. 0,01 bis 0,1 µm) | |
Ehtanol | 100 g |
Toluol | 900 g |
Esterwachs (Tropfpunkt 90 °C) | 3g |
Schutzlackschicht 4 (Schichtstärke 0,8 bis 2,5 µm, vorzugsweise 1,2 bis 1,7 µm) | |
MEK | 400 g |
Toluol | 150 g |
Cyclohexanon | 200 g |
Cellulosenitrat (niedrigviskos, 65 % in Alk.) | 140 g |
Butyl-/Methylmethacrylat (d = 1,05 g/cm3, | 100 g |
Säurezahl 7 bis 9 mg KOH/g) |
Absorptionsschicht 6 (Schichtstärke 0,8 bis 2,8 µm, vorzugsweise 1,5 µm) | |
MEK | 270 g |
Toluol | 360 g |
Aceton | 150 g |
PVC/PVAC-Mischpolymerisat (K-Wert: 43) | 135 g |
Hochmolekul. Dispergier-Additiv | 13 g |
Kieselsäure | 4 g |
Extender (Aluminiumsilikat) | 22 g |
IR-aktivierbares Pigment (Flammruss, Pigment Black 7) | 46 g |
Kleberschicht 7 (Schichtstärke 2,0 bis 10,0 µm, vorzugsweise 3,0 bis 5,0 µm) | |
MEK | 280 g |
Toluol | 350 g |
PVC/PVAC-Copolymer (Fp. 80 °C) | 210 g |
Thermoplastisches Polyurethan (d = 1,18 g/cm3) | 130 9 |
Kieselsäure, hydrophobiert (Partikelgrösse ca. 10 µm) | 60 g |
Claims (13)
- Verfahren zur bereichsweisen Übertragung der eine durch Strahlungsenergie aktivierbare Kieberschicht (7, 7') umfassenden Dekorlage (3, 3') einer Transferfolie (1, 3; 22) von einem Trägerfilm (1, 1') für die Dekorlage (3, 3') auf ein Substrat (17) unter Verwendung eines ggf. beheizten Prägewerkzeuges (20, 21), wobei die Kleberschicht (7, 7') vor Einlauf der Transferfolie (1, 3; 22) in das Prägewerkzeug (20, 21) nur in den Flächenbereichen (10, 10') mittels Strahlungsenergie (9) aktiviert wird, in denen die Dekorlage (3, 3') mittels des Prägewerkzeuges auf das Substrat (11; 17) übertragen werden soll; und wobei weiter eine Transferfolie (1, 3) verwendet wird, deren Dekorlage (3, 3') nur in den auf das Substrat (11, 17) zu übertragenden Flächenbereichen (10, 10') eine Absorptionsschicht (6, 6') aufweist, die die eine Aktivierung der Kleberschicht (7, 7') bewirkende Strahlungsenergie (9) absorbiert.
- Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass die die Kleberschicht (7, 7') aktivierende Strahlungsenergie (9) nur in den Flächenbereichen (10) auf die Dekorlage (3) einwirkt, die zur Übertragung auf das Substrat (11, 17) bestimmt sind. - Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass eine mittels Wärmestrahlung aktivierbare Kleberschicht (7, 7') verwendet wird. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet dass die Kleberschicht (7, 7') der Dekorlage (3, 3') vor Eintritt der Transferfolie (1, 3; 22) in das Prägewerkzeug (20, 21) nur voraktiviert wird und zur vollständigen Aktivierung der Kleberschicht ein beheiztes Prägewerkzeug (21) dient. - Transferfolie zur Verwendung in dem Übertragungsverfahren nach einem der vorhergehenden Ansprüche 1 bis 4, welche auf einem Trägerfilm (1,1') eine aus mehreren Schichten (4, 5, 6, 7) bestehende unter Einwirkung von Druck und ggf. Wärme bereichsweise auf ein Substrat (11, 17) übertragbare Dekorlage (3, 3') aufweist, deren dem Trägerfilm (1, 1') abgekehrte Oberfläche von einer durch Strahlungsenergie aktivierbaren Kleberschicht (7, 7') gebildet ist und die eine Absorptionsschicht (6, 6') umfasst, welche die eine Aktivierung der Kleberschicht (7, 7') bewirkende Strahlungsenergie (9) absorbiert,
dadurch gekennzeichnet , dass die Absorptionsschicht (6, 6') nur in vorgegebenen, zur Übertragung auf das Substrat (11, 17) bestimmten Flächenbereichen (10, 10') vorgesehen ist. - Transferfolie nach Anspruch 5,
dadurch gekennzeichnet, dass die Absorptionsschicht (6, 6') unmittelbar anschliessend an die Kleberschicht (7, 7') vorgesehen ist. - Transferfolie nach Anspruch 5 oder 6,
dadurch gekennzeichnet, dass die Dekorlage (3, 3') auf der zum Trägerfilm (1, 1') weisenden Seite der Absorptionsschicht (6, 6') eine diese nach Übertragung der Dekorlage (3, 3') auf ein Substrat (11, 17) abdeckende undurchsichtige Dekorschicht (5, 5') aufweist. - Transferfolie nach Anspruch 7,
dadurch gekennzeichnet, dass die Dekorschicht (3, 3') eine, vorzugsweise eine beugungsoptisch wirksame Strukur (8, 8') aufweisende Reflexionsschicht (5, 5'), insbesondere eine Metallschicht, ist. - Transferfolie nach einem der Ansprüche 5 bis 8,
dadurch gekennzeichnet, dass die zum Trägerfilm (1, 1') weisende Oberfläche der Dekorlage (3, 3') von einer transparenten Schutzlackschicht (4, 4') gebildet ist. - Transferfolie nach einem der Ansprüche 5 bis 9,
dadurch gekennzeichnet, dass die Absorptionsschicht (6, 6') Wärmestrahlung absorbiert, während die Kleberschicht (7, 7') von einem wärmeaktivierbaren, für die von der Absorptionsschicht (6, 6') aufgenommene Wärmestrahlung durchlässigen Material gebildet ist. - Transferfolie nach einem der Ansprüche 5 bis 10,
dadurch gekennzeichnet, dass die Absorptionsschicht (6, 6') von einer die zur Aktivierung der Kleberschicht (7, 7') dienende Strahlungsenergie (9) absorbierende Pigmente enthaltenden Lackschicht gebildet ist. - Transferfolie nach Anspruch 10 oder 11,
dadurch gekennzeichnet, dass die Absorptionsschicht (6, 6') Infrarot-Strahlung einer Wellenlänge absorbiert, für die die Kleberschicht (7, 7') durchlässig ist. - Transferfolie nach einem der Ansprüche 10 bis 12,
dadurch gekennzeichnet, dass die Absorptionsschicht (6, 6') Wärmestrahlung, inbesondere Infrarot-Strahlung, absorbierende Pigmente, vorzugsweise Russ oder sonstige dunkle Pigmente, enthält.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19921579A DE19921579C2 (de) | 1999-05-10 | 1999-05-10 | Verfahren zur bereichsweisen Übertragung der Dekorlage einer Transferfolie auf ein Substrat sowie hierfür geeignete Transferfolie |
DE19921579 | 1999-05-10 | ||
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 |
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EP1097042A1 EP1097042A1 (de) | 2001-05-09 |
EP1097042B1 true EP1097042B1 (de) | 2003-07-09 |
Family
ID=7907641
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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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 |
EP1800813B1 (de) | 2005-11-23 | 2012-01-04 | Homag Holzbearbeitungssysteme AG | Verfahren und Vorrichtung zur Beschichtung von Bauteilen |
EP2134553A1 (de) * | 2007-03-26 | 2009-12-23 | DeMaxZ AG | Vorrichtung und verfahren zum aufbringen von auf einem film haftenden dekor auf ein objekt |
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 |
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DE4313521C1 (de) * | 1993-04-24 | 1994-06-16 | Kurz Leonhard Fa | Dekorationsschichtaufbau und dessen Verwendung |
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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 |
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 |
ATE233182T1 (de) * | 1998-06-16 | 2003-03-15 | Kba Giori Sa | 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 RU RU2001103747/12A patent/RU2200673C2/ru not_active IP Right Cessation
- 2000-04-22 PT PT00940147T patent/PT1097042E/pt unknown
- 2000-04-22 CN CNB008008000A patent/CN1174865C/zh not_active Expired - Fee Related
- 2000-04-22 AU AU55205/00A patent/AU758536B2/en not_active Ceased
- 2000-04-22 CA CA002336854A patent/CA2336854C/en not_active Expired - Lifetime
- 2000-04-22 EP EP00940147A patent/EP1097042B1/de not_active Expired - Lifetime
- 2000-04-22 DE DE50002816T patent/DE50002816D1/de not_active Expired - Lifetime
- 2000-04-22 ES ES00940147T patent/ES2202140T3/es not_active Expired - Lifetime
- 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 AT AT00940147T patent/ATE244637T1/de active
- 2000-04-22 JP JP2000617021A patent/JP3617625B2/ja not_active Expired - Fee Related
- 2000-04-22 BR BR0006109-3A patent/BR0006109A/pt not_active IP Right Cessation
Patent Citations (1)
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DE4313521C1 (de) * | 1993-04-24 | 1994-06-16 | Kurz Leonhard Fa | Dekorationsschichtaufbau und dessen Verwendung |
Also Published As
Publication number | Publication date |
---|---|
DE50002816D1 (de) | 2003-08-14 |
DE19921579C2 (de) | 2002-02-07 |
PT1097042E (pt) | 2003-11-28 |
DE19921579A1 (de) | 2000-11-16 |
JP2002544068A (ja) | 2002-12-24 |
CA2336854C (en) | 2006-04-18 |
CN1304361A (zh) | 2001-07-18 |
ATE244637T1 (de) | 2003-07-15 |
WO2000068013A1 (de) | 2000-11-16 |
CN1174865C (zh) | 2004-11-10 |
RU2200673C2 (ru) | 2003-03-20 |
AU5520500A (en) | 2000-11-21 |
US6531016B1 (en) | 2003-03-11 |
CA2336854A1 (en) | 2000-11-16 |
BR0006109A (pt) | 2001-04-03 |
JP3617625B2 (ja) | 2005-02-09 |
ES2202140T3 (es) | 2004-04-01 |
AU758536B2 (en) | 2003-03-27 |
EP1097042A1 (de) | 2001-05-09 |
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