EP0412492B1 - Embossing foil, in particular hot embossing foil - Google Patents

Embossing foil, in particular hot embossing foil Download PDF

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Publication number
EP0412492B1
EP0412492B1 EP90115129A EP90115129A EP0412492B1 EP 0412492 B1 EP0412492 B1 EP 0412492B1 EP 90115129 A EP90115129 A EP 90115129A EP 90115129 A EP90115129 A EP 90115129A EP 0412492 B1 EP0412492 B1 EP 0412492B1
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EP
European Patent Office
Prior art keywords
layer
weight
decorative
stamping foil
foil according
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
Application number
EP90115129A
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German (de)
French (fr)
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EP0412492A3 (en
EP0412492A2 (en
Inventor
Ludwig Brehm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Leonhard Kurz Stiftung and Co KG
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Leonhard Kurz GmbH and Co KG
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Publication of EP0412492A2 publication Critical patent/EP0412492A2/en
Publication of EP0412492A3 publication Critical patent/EP0412492A3/en
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Publication of EP0412492B1 publication Critical patent/EP0412492B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/10—Applying flat materials, e.g. leaflets, pieces of fabrics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
    • B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
    • B44C1/17—Dry transfer
    • B44C1/1712—Decalcomanias applied under heat and pressure, e.g. provided with a heat activable adhesive
    • B44C1/1729—Hot stamping techniques
    • 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
    • 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
    • Y10S428/915—Fraud or tamper detecting
    • 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
    • Y10S428/916—Fraud or tamper detecting
    • 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
    • Y10T428/1438—Metal containing
    • Y10T428/1448—Coloring agent containing
    • 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
    • Y10T428/2486—Intermediate layer is discontinuous or differential with outer strippable or release 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • 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
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • 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
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31547—Of polyisocyanurate
    • 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal

Definitions

  • the invention relates to an embossing film, in particular a hot stamping film, in the form of a laminate composed of a carrier film, optionally a separating layer, a transparent top coat layer, a decorative layer and a primer.
  • embossing foil in particular hot stamping foil, is known for example from DE 29 16 723 C2.
  • embossing foils are only decorated on one side, it is necessary to use two such embossing foils in order to produce objects with a decor on each of their two opposite sides.
  • These two mutually independent stamping foils must be positioned in the correct position in relation to the object to be decorated, which can be particularly complex and complicated when the two stamping foils have different expansion properties, for example.
  • the two stamping foils also require considerable effort with their decors not only in the correct position for the object to be decorated, but also in the correct position in relation to each other during the embossing process. This requires high-precision devices and a not inconsiderable amount of time for the production of such two-sided decorated items.
  • thermoplastic film preformed according to the surface shape of the injection molded part to be coated, is then placed in the injection mold and then the injection mold is filled with injection molding compound.
  • a foil carrying decor on both sides is used.
  • the invention has for its object to provide an embossing film of the type mentioned, with which it is very easy and time-saving to realize objects that appear decorated on both sides.
  • the decorative layer successively forms a topcoat layer has adjacent first decorative layer, an opaque intermediate layer and a second decorative layer adjacent to the primer, the primer consisting of an at least translucent material.
  • the opaque, ie opaque or opaque intermediate layer optically separates the two decorative layers from one another, so that two different image motifs can be realized with the two decorative layers.
  • the first decorative layer is visible through the transparent top coat layer, while the second decorative layer is visible through the primer.
  • embossing foil With the help of such an embossing foil, it is therefore easily possible to realize an object that appears to be decorated on both sides.
  • Such an object is, for example, a card, for example an identification card, a credit card or the like.
  • a primer made of an at least translucent material special optical effects, such as a mother-of-pearl effect or the like, can be achieved.
  • the primer consists of a crystal-clear material.
  • the second decorative layer is clearly visible through such a primer. This can be particularly advantageous if the second decorative layer is realized, for example, in multi-color printing.
  • the opaque intermediate layer is preferably a lacquer layer containing metal pigments.
  • a lacquer layer containing metal pigments can be produced on the laminate forming the stamping film in the same way as the separating layer, the transparent top coat layer and the primer, so that a relatively simple device can be used for producing the stamping film, in which first the first decorative layer, then the opaque intermediate layer on the first decorative layer and then the second decorative layer on the opaque intermediate layer.
  • the opaque intermediate layer can be covered at least on one side with a plain colored layer of paint. This is particularly advantageous if the opaque intermediate layer is combined with a multicolor decorative layer.
  • the plain colored layer serves as a primer for the associated first and / or second decorative layer, the plain colored layer also being able to improve the adhesion of the corresponding decorative layer.
  • the / each plain-colored color layer is preferably white, because the color or optical overall effect of the associated decorative layer is not influenced by such a color layer.
  • At least one of the two decorative layers can be a multi-color printing layer.
  • Four-color printing is usually used here, because the entire color spectrum can be achieved with four colors in a manner known per se.
  • the transparent topcoat layer preferably has the following composition: 4 - 5% by weight of ester-soluble nitrocellulose, 25 ⁇ 3% by weight silicone-modified polyester (FK 50%) 25 ⁇ 3% by weight aromatic isocyanate (prepolymer, FK 50%) Balance to 100 wt .-% solvent.
  • the layer thickness of the top coat layer is preferably between 1 and 3 »m. Their weight per unit area is preferably between 1.6 and 2.7 g / m2. The softening range of the transparent top coat is at temperatures between approx. 140 ° C and 160 ° C.
  • the opaque intermediate layer preferably has the following composition: 7 ⁇ 2% by weight aromatic polyurethane resin 5 ⁇ 1% by weight ester-soluble nitrocellulose 10 ⁇ 2% by weight urethane-modified ketone resin (mp ⁇ 140 ° C) 7 ⁇ 2% by weight aromatic isocyanate (FK 50%) 17 ⁇ 3% by weight metallic pigment Balance to 100 wt .-% solvent.
  • the layer thickness of the opaque intermediate layer is preferably between 2 and 5 »m. Their weight per unit area can be between 1.8 and 2.8 g / m2. The softening range of the opaque layer is at temperatures of ⁇ 140 ° C.
  • the / each plain color layer can have the following composition: 7 ⁇ 2% by weight aromatic polyurethane resin 5 ⁇ 1% by weight ester-soluble nitrocellulose 10 ⁇ 2% by weight urethane-modified ketone resin (mp ⁇ 140 ° C) 7 ⁇ 2% by weight aromatic isocyanate (FK 50%) 20 ⁇ 3% by weight of rutile pigment Balance to 100 wt .-% solvent.
  • the layer thickness of the / each plain-colored color layer is preferably between 7 and 12 »m, its weight per unit area between 7.5 and 10 g / m2 and its softening temperature at ⁇ 140 ° C.
  • FIG. 1 shows in a sectional view a section of the embossing film 10 consisting of a carrier film 12, a separating layer 14 provided on the carrier film 12, and a transparent one arranged on the separating layer 14 Top coat layer, a decorative layer 18 provided on the top coat layer 16 and a primer 20 located on the decorative layer 18.
  • the decorative layer 18 has a first decorative layer 22, a second decorative layer 24 and one provided between the two decorative layers 22 and 24 has opaque intermediate layer 26.
  • the first decorative layer 22 is adjacent to the top coat layer 16 and the second decorative layer 24 is adjacent to the primer 20.
  • Such a design of the decorative layer can be sufficient if the two decorative layers 22 and 24 are simply plain-colored without a pattern.
  • the first and / or second decorative layer 22 or 24 is, for example, a multi-color printing layer
  • a plain-colored, in particular white, color layer 28 is provided between the opaque intermediate layer 26 and the corresponding decorative layer.
  • a plain-colored color layer 28 can be seen in FIG. 3 between the opaque intermediate layer 26 and the second decorative layer 24.
  • the layer structure corresponds to the layer structure shown in FIG. 2, ie the first decorative layer 22 is provided on the top coat layer 16 and the primer 20 is provided in the vicinity of the second decorative layer 24.
  • the second decorative layer 24 is visible through the primer 20 of the embossing film 10, which preferably consists of a crystal-clear material, and the first decorative layer 22 is visible through the transparent top coat layer 16.
  • embossing film 10 the two decorative layers 22 and 24 of which are visible after the carrier film 12 has been removed. If a body made of transparent material is fixed on the primer 20 in a suitable work step, an object appears to be decorated on both sides. Since the two decorative layers 22 and 24 can be or are preferably implemented in a single device, there is between the Structures or motifs of the two decorative layers have a precisely fitting connection, so that corresponding, precisely fitting, double-sided objects can be realized easily and in a time-saving manner.

Landscapes

  • Laminated Bodies (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Decoration By Transfer Pictures (AREA)

Abstract

An embossing foil such as a hot embossing foil is of a laminate structure comprising in succession a backing foil, a separating layer, a transparent cover lacquer, a decorative layer means and a foundation layer of an at least translucent material. The decorative layer means successively comprises a first decorative layer adjacent to the cover lacquer layer, an opaque intermediate layer and a second decorative layer adjacent to the foundation layer. The opaque intermediate layer can be covered at least on one side with a single-colored layer over a large area thereof.

Description

Die Erfindung betrifft eine Prägefolie, insbesondere Heissprägefolie, in Form eines Laminates aus aufeinanderfolgend einer Trägerfolie, gegebenenfalls einer Trennschicht, einer transparenten Decklackschicht, einer Dekorlage und einer Grundierung.The invention relates to an embossing film, in particular a hot stamping film, in the form of a laminate composed of a carrier film, optionally a separating layer, a transparent top coat layer, a decorative layer and a primer.

Eine derartige Prägefolie, insbesondere Heissprägefolie, ist beispielsweise aus der DE 29 16 723 C2 bekannt.Such an embossing foil, in particular hot stamping foil, is known for example from DE 29 16 723 C2.

Nachdem die bekannten Prägefolien nur einseitig dekoriert sind, ist es zur Herstellung von auf ihren beiden gegenüberliegenden Seiten je ein Dekor aufweisenden Gegenständen erforderlich, zwei solche Prägefolien anzuwenden. Diese beiden voneinander unabhängigen Prägefolien müssen zu dem zu dekorierenden Gegenstand genau richtig positioniert zugeführt werden, was insbesondere dann sehr aufwendig und kompliziert sein kann, wenn die beiden Prägefolien beispielsweise voneinander verschiedene Ausdehnungseigenschaften besitzen. Ein erheblicher Aufwand ist hierbei auch dafür erforderlich, die beiden Prägefolien mit ihren Dekoren nicht nur genau richtig zum zu dekorierenden Gegenstand, sondern während des Prägens auch in Bezug aufeinander genau richtig positioniert einer dafür vorgesehenen Prägestation zuzuführen. Das erfordert hochpräzise Vorrichtungen sowie einen nicht zu vernachlässigenden Zeitaufwand zur Herstellung derartiger zweiseitig dekorierter Gegenstände.Since the known embossing foils are only decorated on one side, it is necessary to use two such embossing foils in order to produce objects with a decor on each of their two opposite sides. These two mutually independent stamping foils must be positioned in the correct position in relation to the object to be decorated, which can be particularly complex and complicated when the two stamping foils have different expansion properties, for example. The two stamping foils also require considerable effort with their decors not only in the correct position for the object to be decorated, but also in the correct position in relation to each other during the embossing process. This requires high-precision devices and a not inconsiderable amount of time for the production of such two-sided decorated items.

Aus der DE-A- 1 629 706 ist ein Verfahren zur Herstellung von Spritzgußteilen mit Oberflächenbeschichtung bekannt, wobei man eine thermoplastische Folie, entsprechend der Oberflächengestalt des zu beschichtenden Spritzgußteils vorformt, hierauf in die Spritzgußform einlegt und hierauf die Spritzgußform mit Spritzgußmasse füllt. Bei der Herstellung von transparenten Spritzgußteilen verwendet man eine beidseitig Dekor tragende Folie.From DE-A-1 629 706 a process for the production of injection molded parts with a surface coating is known, whereby a thermoplastic film, preformed according to the surface shape of the injection molded part to be coated, is then placed in the injection mold and then the injection mold is filled with injection molding compound. In the production of transparent injection molded parts, a foil carrying decor on both sides is used.

Aus der Broschüre der Firma Leonhard Kurz GmbH & Co. "Das Prägen auf Kunststoffen", Seite 18, ist eine sogenannte "Konterprägung" bekannt, wobei ein glasklares Substrat von der Rückseite her beprägt wird. Hierzu werden sezielle Prägefolien verwendet, die ihre Dekorschicht so ausgebildet haben, dass das Dekor von der Trägerfolie wegweist. Es ist weiter bekannt, im Konterverfahren geprägte Gegenstände dann zu hinterspritzen bzw. rückseitig mit einem Farblack abzudecken, wobei das geprägte Bild sichtbar bleibt. Ein wesentlicher Nachteil eines derartigen Vorgehens ist, dass sowohl beim Hinterspritzen als auch beim rückseitigen Lackieren die Prägung leicht beschädigt werden kann. Insbesondere besteht beim Hinterspritzen durch die relativ hohe Temperatur die Gefahr eines Verziehens bzw. einer Ablösung der Dekorschicht der Konterfolie durch den rückseitig aufzubringenden Lack. Ein doppelseitiges Dekor wurde auch im Konterverfahren mit einer Prägefolie bisher nicht realisiert.From the brochure of the company Leonhard Kurz GmbH & Co. "Embossing on plastics", page 18, a so-called "counter-embossing" is known, whereby a crystal-clear substrate is embossed from the back. For this purpose, special embossing foils are used that have their decorative layer in such a way that the decor points away from the carrier foil. It is also known to inject objects embossed in the counter-process or to cover them on the back with a colored lacquer, the embossed image remaining visible. A major disadvantage of such a procedure is that the embossing can easily be damaged both in the rear molding and in the coating on the rear. In particular, there is a risk of warping or detachment of the decorative layer of the backing film by the lacquer to be applied on the rear side due to the relatively high temperature. A double-sided decor has not yet been realized in the counter process with an embossing film.

Der Erfindung liegt die Aufgabe zugrunde, eine Prägefolie der eingangs genannten Art zu schaffen, mit welcher es sehr einfach und zeitsparend möglich ist, zweiseitig dekoriert erscheinende Gegenstände zu realisieren.The invention has for its object to provide an embossing film of the type mentioned, with which it is very easy and time-saving to realize objects that appear decorated on both sides.

Diese Aufgabe wird erfindungsgemäss dadurch gelöst, dass die Dekorlage aufeinanderfolgend eine zur Decklackschicht benachbarte erste Dekorschicht, eine opake Zwischenschicht und eine zur Grundierung benachbarte zweite Dekorschicht aufweist, wobei die Grundierung aus einem zumindest durchscheinenden Material besteht. Durch die opake, d.h. undurchsichtige bzw. lichtundurchlässige Zwischenschicht sind die beiden Dekorschichten voneinander optisch getrennt, so dass mit den beiden Dekorschichten zwei voneinander verschiedene Bildmotive realisierbar sind. Durch die transparente Decklackschicht hindurch ist die erste Dekorschicht sichtbar, während durch die Grundierung hindurch die zweite Dekorschicht sichtbar ist. Mit Hilfe einer solchen Prägefolie ist es demnach ohne weiteres möglich, einen Gegenstand zu realisieren, der zweiseitig dekoriert erscheint. Bei einem solchen Gegenstand handelt es sich beispielsweise um eine Karte, z.B. um eine Ausweiskarte, eine Kreditkarte oder dergleichen. Mit einer Grundierung aus einem zumindest durchscheinenden Material sind gegebenenfalls besondere optische Effekte, wie z.B. ein Perlmutteffekt oder dergleichen erzielbar.This object is achieved according to the invention in that the decorative layer successively forms a topcoat layer has adjacent first decorative layer, an opaque intermediate layer and a second decorative layer adjacent to the primer, the primer consisting of an at least translucent material. The opaque, ie opaque or opaque intermediate layer optically separates the two decorative layers from one another, so that two different image motifs can be realized with the two decorative layers. The first decorative layer is visible through the transparent top coat layer, while the second decorative layer is visible through the primer. With the help of such an embossing foil, it is therefore easily possible to realize an object that appears to be decorated on both sides. Such an object is, for example, a card, for example an identification card, a credit card or the like. With a primer made of an at least translucent material, special optical effects, such as a mother-of-pearl effect or the like, can be achieved.

Als zweckmässig hat es sich erwiesen, wenn die Grundierung aus einem glasklaren Material besteht. Durch eine solche Grundierung hindurch ist die zweite Dekorschicht gut sichtbar. Das kann insbesondere dann vorteilhaft sein, wenn die zweite Dekorschicht beispielsweise in einem Mehrfarbendruck realisiert ist.It has proven to be useful if the primer consists of a crystal-clear material. The second decorative layer is clearly visible through such a primer. This can be particularly advantageous if the second decorative layer is realized, for example, in multi-color printing.

Die opake Zwischenschicht ist vorzugsweise eine Metallpigmente enthaltende Lackschicht. Eine derartige Metallpigmente enthaltende Lackschicht kann an dem die Prägefolie bildenden Laminat gleich hergestellt werden wie die Trennschicht, die transparente Decklackschicht und die Grundierung, so dass zur Herstellung der Prägefolie eine relativ einfache Vorrichtung anwendbar ist, in welcher zuerst die erste Dekorschicht, dann auf der ersten Dekorschicht die opake Zwischenschicht und anschliessend auf der opaken Zwischenschicht die zweite Dekorschicht hergestellt werden. Durch die Anwendung einer einzigen Vorrichtung zur Herstellung dieses Laminataufbaues der Schichten ist es in besonders einfacher Weise möglich, die beiden Dekorschichten mit Dekoren auszubilden, die passgenau einander zugeordnet sind.The opaque intermediate layer is preferably a lacquer layer containing metal pigments. Such a lacquer layer containing metal pigments can be produced on the laminate forming the stamping film in the same way as the separating layer, the transparent top coat layer and the primer, so that a relatively simple device can be used for producing the stamping film, in which first the first decorative layer, then the opaque intermediate layer on the first decorative layer and then the second decorative layer on the opaque intermediate layer. Through the use of a single device for producing this laminate structure of the layers, it is possible in a particularly simple manner to design the two decorative layers with decors which are assigned to one another with a precise fit.

Die opake Zwischenschicht kann mindestens einseitig mit einer unifarbenen Farbschicht grossflächig bedeckt sein. Das ist insbesondere dann vorteilhaft, wenn die opake Zwischenschicht mit einer Mehrfarben-Dekorschicht kombiniert ist. In diesem Fall dient die unifarbene Farbschicht als Grundierung für die zugehörige erste und/oder zweite Dekorschicht, wobei die unifarbene Farbschicht gleichzeitig auch eine Verbesserung der Haftung der entsprechend Dekorschicht bewirken kann.The opaque intermediate layer can be covered at least on one side with a plain colored layer of paint. This is particularly advantageous if the opaque intermediate layer is combined with a multicolor decorative layer. In this case, the plain colored layer serves as a primer for the associated first and / or second decorative layer, the plain colored layer also being able to improve the adhesion of the corresponding decorative layer.

Die/jede unifarbene Farbschicht ist vorzugsweise weiss, weil durch eine solche Farbschicht die zugehörige Dekorschicht in ihrem Farb- bzw. optischen Gesamteffekt nicht beeinflusst wird.The / each plain-colored color layer is preferably white, because the color or optical overall effect of the associated decorative layer is not influenced by such a color layer.

Wie bereits erwähnt worden ist, kann mindestens eine der beiden Dekorschichten eine Mehrfarbendruck-Schicht sein. Üblicherweise kommt hierbei ein Vierfarbendruck zur Anwendung, weil mit vier Farben in an sich bekannter Weise das gesamte Farbspektrum erzielbar ist.As has already been mentioned, at least one of the two decorative layers can be a multi-color printing layer. Four-color printing is usually used here, because the entire color spectrum can be achieved with four colors in a manner known per se.

Die transparente Decklackschicht weist vorzugsweise folgende Zusammensetzung auf:
4 - 5 Gew.-% esterlösliche Nitrozellulose,
25 ± 3 Gew.-% silikonmodifiziertes Polyester (FK 50%)
25 ± 3 Gew.-% aromatisches Isocyanat (Präpolymer, FK 50%)
Rest auf 100 Gew.-% Lösungsmittel.The transparent topcoat layer preferably has the following composition:
4 - 5% by weight of ester-soluble nitrocellulose,
25 ± 3% by weight silicone-modified polyester (FK 50%)
25 ± 3% by weight aromatic isocyanate (prepolymer, FK 50%)
Balance to 100 wt .-% solvent.

Die Schichtdicke der Decklackschicht liegt vorzugsweise zwischen 1 und 3 »m. Ihr Flächengewicht beträgt vorzugsweise zwischen 1,6 und 2,7 g/m². Der Erweichungsbereich der transparenten Decklackschicht liegt bei Temperaturen zwischen ca. 140°C und 160°C.The layer thickness of the top coat layer is preferably between 1 and 3 »m. Their weight per unit area is preferably between 1.6 and 2.7 g / m². The softening range of the transparent top coat is at temperatures between approx. 140 ° C and 160 ° C.

Die opake Zwischenschicht weist vorzugsweise die folgende Zusammensetzung auf:
7 ± 2 Gew.-% aromatisches Polyurethanharz
5 ± 1 Gew.-% esterlösliche Nitrocellulose
10 ± 2 Gew.-% urethanmodifizertes Ketonharz (mp ≧ 140°C)
7 ± 2 Gew.-% aromatisches Isocyanat (FK 50%)
17 ± 3 Gew.-% Metallic-Pigment
Rest auf 100 Gew.-% Lösungsmittel.The opaque intermediate layer preferably has the following composition:
7 ± 2% by weight aromatic polyurethane resin
5 ± 1% by weight ester-soluble nitrocellulose
10 ± 2% by weight urethane-modified ketone resin (mp ≧ 140 ° C)
7 ± 2% by weight aromatic isocyanate (FK 50%)
17 ± 3% by weight metallic pigment
Balance to 100 wt .-% solvent.

Die Schichtdicke der opaken Zwischenschicht liegt vorzugsweise zwischen 2 und 5 »m. Ihr Flächengewicht kann zwischen 1,8 und 2,8 g/m² liegen. Der Erweichungsbereich der opaken Schicht liegt bei Temperaturen von ≧ 140°C.The layer thickness of the opaque intermediate layer is preferably between 2 and 5 »m. Their weight per unit area can be between 1.8 and 2.8 g / m². The softening range of the opaque layer is at temperatures of ≧ 140 ° C.

Die/jede unifarbene Farbschicht kann folgende Zusammensetzung aufweisen:
7 ± 2 Gew.-% aromatisches Polyurethanharz
5 ± 1 Gew.-% esterlösliche Nitrocellulose
10 ± 2 Gew.-% urethanmodfiziertes Ketonharz (mp ≧ 140°C)
7 ± 2 Gew.-% aromatisches Isocyanat (FK 50%)
20 ± 3 Gew.-% Rutilpigment
Rest auf 100 Gew.-% Lösungsmittel.The / each plain color layer can have the following composition:
7 ± 2% by weight aromatic polyurethane resin
5 ± 1% by weight ester-soluble nitrocellulose
10 ± 2% by weight urethane-modified ketone resin (mp ≧ 140 ° C)
7 ± 2% by weight aromatic isocyanate (FK 50%)
20 ± 3% by weight of rutile pigment
Balance to 100 wt .-% solvent.

Die Schichtdicke der/jeder unifarbenen Farbschicht liegt vorzugsweise zwischen 7 und 12 »m und ihr Flächengewicht zwischen 7,5 und 10 g/m² und ihre Erweichungstemperatur bei ≧ 140°C.The layer thickness of the / each plain-colored color layer is preferably between 7 and 12 »m, its weight per unit area between 7.5 and 10 g / m² and its softening temperature at ≧ 140 ° C.

Weitere Einzelheiten, Merkmale und Vorteile ergeben sich aus der nachfolgenden Beschreibung eines in der Zeichnung schematisch angedeuteten Ausführungsbeispieles der erfindungsgemässen Prägefolie, wobei auf eine maßstabgetreue Relation der Dicken der unterschiedlichen Schichten des Prägefolienlamintes verzichtet worden ist. Es zeigt, jeweils im Schnitt:

Fig. 1
eine stark vergrösserte Darstellung eines Abschnittes der Prägefolie,
Fig. 2
einen stark vergrösserten Ausschnitt aus der Dekorlage der Prägefolie gem. Fig. 1, und
Fig. 3
eine der Fig. 2 ähnliche Darstellung eines stark vergrösserten Ausschnittes einer zweiten Ausbildung der Dekorlage der Prägefolie.
Further details, features and advantages emerge from the following description of an exemplary embodiment of the embossing foil according to the invention, which is schematically indicated in the drawing, with no true-to-scale relation of the thicknesses of the different layers of the embossing foil laminate being dispensed with. It shows, in each case on average:
Fig. 1
a greatly enlarged representation of a section of the stamping foil,
Fig. 2
a greatly enlarged section of the decorative layer of the embossing foil acc. Fig. 1, and
Fig. 3
one of FIG. 2 similar representation of a greatly enlarged section of a second embodiment of the decorative layer of the stamping film.

Fig. 1 zeigt in einer Schnittdarstellung einen Abschnitt der Prägefolie 10 bestehend aus einer Trägerfolie 12, einer auf der Trägerfolie 12 vorgesehenen Trennschicht 14, einer auf der Trennschicht 14 angeordneten transparenten Decklackschicht, einer auf der Decklackschicht 16 vorgesehenen Dekorlage 18 und einer auf der Dekorlage 18 befindlichen Grundierung 20. Aus Fig. 2 ist ersichtlich, dass die Dekorlage 18 eine erste Dekorschicht 22, eine zweite Dekorschicht 24 und eine zwischen den beiden Dekorschichten 22 und 24 vorgesehene opake Zwischenschicht 26 aufweist. Die erste Dekorschicht 22 ist zur Decklackschicht 16 und die zweite Dekorschicht 24 ist zur Grundierung 20 benachbart. Eine solche Ausbildung der Dekorlage kann ausreichend sein, wenn die beiden Dekorschichten 22 und 24 ohne Musterung einfach unifarben ausgebildet sind. Handelt es sich jedoch bei der ersten und/oder zweiten Dekorschicht 22 bzw. 24 beispielsweise um eine Mehrfarbendruckschicht, so ist es vorteilhaft, wenn zwischen der opaken Zwischenschicht 26 und der entsprechenden Dekorschicht eine unifarbene, insbesondere weisse, Farbschicht 28 vorgesehen ist. Eine solche unifarbene Farbschicht 28 ist in Fig. 3 zwischen der opaken Zwischenschicht 26 und der zweiten Dekorschicht 24 zu erkennen. Im übrigen entspricht der Schichtenaufbau dem in Fig. 2 gezeichneten Schichtenaufbau, d.h. auf der Decklackschicht 16 ist die erste Dekorschicht 22 und in der Nachbarschaft der zweiten Dekorschicht 24 ist die Grundierung 20 vorgesehen. Durch die vorzugsweise aus einem glasklaren Material bestehende Grundierung 20 der Prägefolie 10 ist die zweite Dekorschicht 24 und durch die transparente Decklackschicht 16 hindurch ist die erste Dekorschicht 22 sichtbar. Es ergibt sich somit eine Prägefolie 10, deren beide Dekorschichten 22 und 24 nach Entfernung der Trägerfolie 12 sichtbar sind. Wird auf der Grundierung 20 in einem geeigneten Arbeitsgang ein Körper aus transparentem Material fixiert, so ergibt sich ein zweiseitig dekoriert erscheinender Gegenstand. Da die beiden Dekorschichten 22 und 24 in einer einzigen Vorrichtung realisierbar sind bzw. vorzugsweise realisiert werden, ergibt sich zwischen den Strukturen bzw. Motiven der beiden Dekorschichten ein passgenauer Zusammenhang, so dass problemlos und zeitsparend entsprechende passgenau zweiseitig dekorierte Gegenstände realisierbar sind.1 shows in a sectional view a section of the embossing film 10 consisting of a carrier film 12, a separating layer 14 provided on the carrier film 12, and a transparent one arranged on the separating layer 14 Top coat layer, a decorative layer 18 provided on the top coat layer 16 and a primer 20 located on the decorative layer 18. From FIG. 2 it can be seen that the decorative layer 18 has a first decorative layer 22, a second decorative layer 24 and one provided between the two decorative layers 22 and 24 has opaque intermediate layer 26. The first decorative layer 22 is adjacent to the top coat layer 16 and the second decorative layer 24 is adjacent to the primer 20. Such a design of the decorative layer can be sufficient if the two decorative layers 22 and 24 are simply plain-colored without a pattern. However, if the first and / or second decorative layer 22 or 24 is, for example, a multi-color printing layer, it is advantageous if a plain-colored, in particular white, color layer 28 is provided between the opaque intermediate layer 26 and the corresponding decorative layer. Such a plain-colored color layer 28 can be seen in FIG. 3 between the opaque intermediate layer 26 and the second decorative layer 24. Otherwise, the layer structure corresponds to the layer structure shown in FIG. 2, ie the first decorative layer 22 is provided on the top coat layer 16 and the primer 20 is provided in the vicinity of the second decorative layer 24. The second decorative layer 24 is visible through the primer 20 of the embossing film 10, which preferably consists of a crystal-clear material, and the first decorative layer 22 is visible through the transparent top coat layer 16. This results in an embossing film 10, the two decorative layers 22 and 24 of which are visible after the carrier film 12 has been removed. If a body made of transparent material is fixed on the primer 20 in a suitable work step, an object appears to be decorated on both sides. Since the two decorative layers 22 and 24 can be or are preferably implemented in a single device, there is between the Structures or motifs of the two decorative layers have a precisely fitting connection, so that corresponding, precisely fitting, double-sided objects can be realized easily and in a time-saving manner.

Claims (9)

  1. Stamping foil, especially hot-stamping foil, in the form of a laminate comprising, in succession, a carrier foil (12), a release layer (14), a transparent covering layer (16), a decorative lamina (18) and an adhesive layer (20), characterized in that the decorative lamina (18) has in succession a first decorative layer (22) adjacent to the covering layer (16), an opaque interlayer (26) and a second decorative layer (24) adjacent to the adhesive layer (20), the adhesive layer (20) consisting of a material which is at least translucent.
  2. Stamping foil according to Claim 1, characterized in that the adhesive layer (20) consists of a clear material.
  3. Stamping foil according to Claim 1 or 2, characterized in that the opaque interlayer (26) is a coating film containing metal pigments.
  4. Stamping foil according to one of the preceding claims, characterized in that large areas of the opaque interlayer (26) are covered, at least on one side, with a solid-colour coat (28).
  5. Stamping foil according to Claim 4, characterized in that the/each solid-colour coat (28) is white.
  6. Stamping foil according to one of the preceding claims, characterized in that at least one of the two decorative layers (22, 24) is a multicolour-printed layer.
  7. Stamping foil according to one of the preceding claims, characterized in that the covering layer has the following composition:
    4 - 5 % by weight of ester-soluble nitrocellulose
    25 ± 3 % by weight of silicone-modified polyester (solids content 50%)
    25 ± 3 % by weight of aromatic isocyanate (prepolymer, solids content 50%)
    remainder solvent,
    is provided in a layer thickness of between 1 and 3 »m, and has a weight per unit area of between 1.6 and 2.7 g/m².
  8. Stamping foil according to Claim 3, characterized in that the opaque interlayer has the following composition:
    7 ± 2 % by weight of aromatic polyurethane resin
    5 ± 1 % by weight of ester-soluble nitrocellulose
    10 ± 2 % by weight of urethane-modified ketonic resin (m.p. ≧ 140°C)
    7 ± 2 % by weight of aromatic isocyanate (solids content 50%)
    17 ± 3 % by weight of metallic pigment
    remainder solvent,
    is provided in a layer thickness of between 2 and 5 »m, and has a weight per unit area of between 1.8 and 2.8 g/m².
  9. Stamping foil according to Claim 4 or 5, characterized in that the/each solid-colour layer (28) has the following composition:
    7 ± 2 % by weight of aromatic polyurethane resin
    5 ± 1 % by weight of ester-soluble nitrocellulose
    10 ± 2 % by weight of urethane-modified ketonic resin (m.p. ≧ 140°C)
    7 ± 2 % by weight of aromatic isocyanate (solids content 50%)
    20 ± 3 % by weight of rutile pigment
    remainder solvent,
    is provided in a layer thickness of between 7 and 12 »m, and has a weight per unit area of between 7.5 and 10 g/m².
EP90115129A 1989-08-11 1990-08-07 Embossing foil, in particular hot embossing foil Expired - Lifetime EP0412492B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3926578 1989-08-11
DE3926578A DE3926578C1 (en) 1989-08-11 1989-08-11

Publications (3)

Publication Number Publication Date
EP0412492A2 EP0412492A2 (en) 1991-02-13
EP0412492A3 EP0412492A3 (en) 1992-01-15
EP0412492B1 true EP0412492B1 (en) 1994-07-06

Family

ID=6386949

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90115129A Expired - Lifetime EP0412492B1 (en) 1989-08-11 1990-08-07 Embossing foil, in particular hot embossing foil

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US (1) US5053260A (en)
EP (1) EP0412492B1 (en)
JP (1) JPH0376699A (en)
AT (1) ATE108143T1 (en)
DE (2) DE3926578C1 (en)
DK (1) DK0412492T3 (en)
ES (1) ES2058703T3 (en)

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JP2843896B2 (en) * 1991-11-15 1999-01-06 株式会社ノリタケカンパニーリミテド Transfer paper and manufacturing method thereof
TW259760B (en) * 1993-03-08 1995-10-11 Seiko Epson Corp
US5464690A (en) * 1994-04-04 1995-11-07 Novavision, Inc. Holographic document and method for forming
ES2144543T3 (en) * 1994-06-01 2000-06-16 Hansgrohe Ag FLEXIBLE PLASTIC TUBE WITH A COLORED OR METALLIC SURFACE AND PROCEDURE FOR ITS PRODUCTION.
DE4419120A1 (en) * 1994-06-01 1995-12-07 Grohe Kg Hans Plastic hose with a colored and / or metallized surface and process for its manufacture
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DE102018123473A1 (en) * 2018-09-24 2020-03-26 Leonhard Kurz Stiftung & Co. Kg Decorative film, transfer film, use of a transfer film, process for producing a transfer film, process for decorating a molded plastic part and molded plastic part
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Also Published As

Publication number Publication date
JPH0376699A (en) 1991-04-02
EP0412492A3 (en) 1992-01-15
DE59006346D1 (en) 1994-08-11
ATE108143T1 (en) 1994-07-15
DE3926578C1 (en) 1990-07-26
EP0412492A2 (en) 1991-02-13
DK0412492T3 (en) 1994-09-19
ES2058703T3 (en) 1994-11-01
US5053260A (en) 1991-10-01

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