WO2003049923A1 - Machine d'estampage a chaud comportant une station d'estampage - Google Patents

Machine d'estampage a chaud comportant une station d'estampage Download PDF

Info

Publication number
WO2003049923A1
WO2003049923A1 PCT/DE2002/004192 DE0204192W WO03049923A1 WO 2003049923 A1 WO2003049923 A1 WO 2003049923A1 DE 0204192 W DE0204192 W DE 0204192W WO 03049923 A1 WO03049923 A1 WO 03049923A1
Authority
WO
WIPO (PCT)
Prior art keywords
roller
embossing
web
stamping
deflection
Prior art date
Application number
PCT/DE2002/004192
Other languages
German (de)
English (en)
Inventor
Georg Kaluza
Original Assignee
Leonhard Kurz Gmbh & Co. Kg
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Leonhard Kurz Gmbh & Co. Kg filed Critical Leonhard Kurz Gmbh & Co. Kg
Priority to AU2002350389A priority Critical patent/AU2002350389A1/en
Publication of WO2003049923A1 publication Critical patent/WO2003049923A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0036—Heat treatment
    • B32B38/004—Heat treatment by physically contacting the layers, e.g. by the use of heated platens or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
    • B29C59/04—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/07—Embossing, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/02—Dies; Accessories
    • B44B5/028—Heated dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0784—Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
    • B32B2309/06—Angles

Definitions

  • the invention relates to a hot stamping machine with an embossing station, which has a heatable embossing roller and at least one pressure roller, between which an embossing film web and a substrate web to be embossed are moved simultaneously.
  • the calendering process consists in that the heat and pressure are only applied in a small, quasi-linear slot area of the embossing station, ie the embossing roller and the at least one pressure roller. If the temperature of the embossing roller is increased, it must be expected that either the substrate web to be decorated or the embossing film will be damaged.
  • This known calendering process is therefore subject to relatively narrow limits. The same considerations also apply, for example, to the device known from DE 943 379 C for embossing and trimming the edges of thermoplastic plastic webs or webs of paper, fibrous material or fabric which are impregnated or coated with these plastics, the plastic web being, for example, on a documents formed by a roller rests.
  • the embossing process that is to say the heat and pressure, takes place only in the small, quasi-linear region between the base formed by a roller for the substrate web to be embossed and the embossing roller formed by an embossing wheel.
  • This known device has a heatable embossing roller and a number of pressure rollers which are provided at a distance from one another and parallel to the embossing roller.
  • the pressure rollers are individually adjustable, with one or two adjacent inner pressure rollers first and then the further pressure rollers progressively being able to be placed against the embossing roller.
  • the pressure rollers can be arranged in groups symmetrically to the embossing roller, the pressure rollers corresponding to one another with respect to the plane of symmetry being movable synchronously.
  • Each pinch roller group can comprise pinch roller pairs, which are each mounted on a rocker.
  • the rockers are provided on an angle lever so as to be tiltable about an axis parallel to the axis of rotation of the pressure rollers.
  • the pressure rollers are arranged at a constant distance from one another in the circumferential direction of the heatable embossing roller, i.e. the distance between the pressure rollers cannot be changed in the circumferential direction of the heatable embossing roller.
  • the embossing distance which is determined by the first and last pressure roller seen in the circumferential direction of the embossing roller, is invariably constant.
  • the process heat requirement for embossing the respective embossing foil web on the associated substrate web is consequently only by a corresponding one
  • the support device has at least two support rollers which are spaced apart from one another and at least approximately axially parallel to one another, around which a continuous support body belt made of a silicone material with a mechanical reinforcement and driven by a drive rotates.
  • the embossing section of this known device has a certain contact length, which is defined by the center distance between the two most distant support rollers.
  • At least one pressure roller of the pressure roller arrangement is assigned to each of the two or at least the two support rollers which are most distant from one another.
  • the invention has for its object to provide a hot stamping machine of the type mentioned, with which it is possible with structurally simple means to set the required process heat for stamping the respective stamping foil on the associated substrate sheet for different stamping foils and different substrate sheets in a simple manner.
  • the deflection roller is at a correspondingly large distance from the at least one pressure roller in the circumferential direction of the embossing roller.
  • Process heat demand the circumferential distance of the deflection roller from the at least one pressure roller is correspondingly small.
  • the stamping foil web and the substrate web can be deflected around the deflection roller.
  • This is the case, for example, when a hologram foil is used as the embossing foil which is to be embossed on a banknote paper substrate web.
  • This requires a large amount of process heat, with optimum adjustment of the circumferential distance of the deflecting roller from the at least one pressure roller ensuring optimum preheating of both the embossing film web and the substrate web to be embossed.
  • the circumferential distance of the deflection roller around which the embossing film web and the substrate web are deflected is reduced by the at least one pressure roller. Due to the correspondingly shortened warm-up distance between the deflection roller and the at least one pressure roller, for example, little water is removed from a substrate web formed by a paper web.
  • This setting variant of the deflection roller is advantageous, for example, for thin web materials of the embossing film web or the substrate web.
  • the deflecting roller can also be provided only for deflecting the stamping foil web, while the substrate web to be stamped is simultaneously moved directly between the stamping roller and the at least one pressure roller.
  • Such a design of the hot stamping machine is used, for example, when hot stamping a hot stamping film on a substrate web which is formed by thermal paper.
  • the length of the preheating section for the embossing film web can be set as desired, depending on the type of embossing film, while the heating section for the substrate, ie paper web, is very short or quasi-linear.
  • the last-mentioned variant of the hot stamping machine is also suitable for substrate webs made of film webs, for example made of PVC, PT, PE or the like. are formed.
  • the embossing roller can also be assigned a second deflection roller, which is provided in the circumferential direction of the embossing roller between the at least one pressure roller and the first deflection roller, the distance of the second deflection roller with respect to the at least one pressure roller in the circumferential direction heatable embossing roller is adjustable.
  • the stamping film web is deflected around the first deflection roller and the substrate web to be stamped is deflected around the second deflection roller.
  • the second deflection roller like the first deflection roller, is provided in the vicinity of the heatable embossing roller, i.e. radially slightly spaced from the embossing roller.
  • FIG. 1A shows a first embodiment of the schematically drawn stamping station of the hot stamping machine with a heatable stamping roller, at least one pressure roller and a first deflection roller, the first deflection roller being relatively far away from the at least one pressure roller in the circumferential direction,
  • FIG. 1B shows a configuration of the embossing station corresponding to FIG. 1A, but the deflection roller from the at least one pressure roller in
  • Circumferential direction is less distant
  • Figure 1 C is a training of Figures 1 A and 1 B corresponding
  • the deflection roller even less far away from the at least one pressure roller or in the immediate vicinity
  • Figure 2 shows a second embodiment of the hot stamping machine with a
  • Embossing station which has a heatable embossing roller, at least one pressure roller and a first deflection roller for the embossing film web and a second deflection roller for the substrate web.
  • FIG. 1A schematically illustrates in a side view an embodiment of the hot stamping machine 10 with an stamping station 12 which has a heatable stamping roller 14 and at least one pressure roller 16 which presses against the stamping roller 14.
  • Solid lines indicate a pair of pressure rollers 16 'and a thin pressure-dotted line schematically illustrates a single pressure roller 16 ".
  • a deflection roller 22 is provided in the vicinity of the embossing roller 14 and is adjustable in the circumferential direction of the embossing roller. This is indicated by the arcuate double arrow 26 concentric with the center 24 of the embossing roller 14.
  • the circumferential distance between the deflecting roller 22 and the at least one pressure roller 16 is set as desired by appropriate adjustment of the deflecting roller 22. This circumferential distance is illustrated by the curved arrow 28.
  • the design of the embossing station 12 according to FIG. 1A is used when a high process heat requirement is required for embossing, for example, a hologram embossing film on banknote paper as the substrate web 20.
  • This high process heat requirement is ensured by a correspondingly long warm-up distance of the substrate web 20 and the embossing film web 18, which is determined by the circumferential distance 28 between the deflection roller 22 and the at least one pressure roller 16.
  • Sheet of paper 20 and the embossing foil web 18 are deflected via the deflecting roller 22 which is relatively far away in the circumferential direction from the at least one pressure roller 16 and then fed to the embossing roller 14, the embossing foil web 18 and the substrate web 20 wrapping the embossing roller 14 along the circumferential distance 28.
  • Optimal preheating of the embossing film web 18 and the substrate web 20 is possible through a defined, changeable positioning of the deflection roller 22 with respect to the at least one pressure roller 16.
  • a stamping station 12 according to FIG. 1A can also be used, for example, if the stamping film is made of a magnetic film and if the substrate web 20 is formed of a paper web onto which the magnetic film is stamped with a correspondingly high process heat requirement.
  • 1B illustrates an embodiment of the embossing station 12 of an embossing machine 10, the deflection roller 22 being at a smaller circumferential distance 28 from the at least one pressure roller 16 compared to the embodiment according to FIG. 1A. Otherwise, the design according to FIG. 1B is similar to the embodiment according to FIG. 1A. The same details are designated in FIG. 1B with the same reference numerals as in FIG. 1A, so that it is not necessary to describe all these details again in detail in conjunction with FIG. 1B.
  • Such an adjustment of the deflection roller 22, ie such a reduced circumferential distance 28 of the deflection roller 22 from the at least one pressure roller 16, is selected if the process heat requirement for embossing the decor of the embossing film web 18 on the substrate web 20 is correspondingly reduced or smaller.
  • Such an adjustment of the deflection roller 22 is advantageous, for example, if thin materials for the embossing film 18 and / or substrate web 20 are used. If the substrate web 20 is a thin paper web, then relatively little water is withdrawn from the paper web 20 as desired due to the shortening of the warm-up distance corresponding to the shortened circumferential distance 28.
  • FIGS. 1 A and 1 B shows schematically in a representation similar to FIGS. 1 A and 1 B, an embossing station 12 of a hot stamping machine 10, the deflection roller 22, around which the embossing film web 18 and the substrate web 20 are deflected, of the at least one pressure roller 16 only a very small one Has circumferential distance 28.
  • Figure 2 illustrates an embodiment of the embossing station 12 of a hot stamping machine 10, which differs from the embodiment shown schematically in Figures 1A, 1B and 1C in that the heatable stamping roller 14 is assigned not only a first deflection roller 22 but also a second deflection roller 30 is.
  • the first deflecting roller 22 is - as in the embodiment according to FIGS. 1A to 1C
  • the circumferential direction of the embossing roller 14 is adjustable as desired. This is illustrated by the arcuate double arrow 26.
  • the second deflection roller 30 can be provided in a stationary manner, but it is preferred if the second deflection roller 32 can also be adjusted as desired in the circumferential direction of the embossing roller 14.
  • the embossing film web 18 is deflected around the first deflection roller 22.
  • the substrate web 20 to be embossed is deflected around the second deflection film 30.
  • Such a configuration of the hot stamping machine 10 enables the preheating section for the embossing film web 18, which is determined by the peripheral section 28 between the first deflecting roller 22 and the at least one pressure roller 16, to be set as desired, and also allows the preheating section to be set as required by the circumferential distance 34 between the second deflecting roller 30 and the at least one a pressure roller 16 specific warm-up path for the substrate web 20.
  • An embodiment according to FIG. 2 occurs, for example, when hot stamping a hot stamping foil 18 on thermal paper as a substrate web 20 or for hot stamping a hot stamping foil 18 on plastic foil webs, for example made of PVC, PP, BE or the like. to use.
  • the hot stamping foil web 18 is fed via the first deflection roller 22 to the stamping roller 14, the length of the preheating section for the stamping foil 18 being adjustable according to the type of foil used.
  • the substrate web 20 made of thermal paper is fed to the embossing roller 14 by means of the second deflection roller 30, the warm-up distance of the thermal paper substrate web 20 being short, so that the heat supplied to the substrate web 20 does not lead to undesired discoloration of the thermal paper.
  • the at least one pressure roller 16 can be formed by a single pressure roller 16 ′′ that is formed by a pair of pressure rollers 16 ′ , as is illustrated in FIGS. 1A to 1C.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

L'invention concerne une machine d'estampage à chaud (10) comportant une station d'estampage (12) composée d'au moins un cylindre d'estampage (14) pouvant être chauffé, et d'au moins un rouleau de compression (16), entre lesquels une bande de feuille d'estampage (18) et une bande de substrat (20) devant être estampée sont déplacées simultanément. Pour permettre un réglage défini de la longueur de la trajectoire de préchauffage de la bande de feuille d'estampage (18) et de la longueur de la trajectoire de chauffage de la bande de substrat (20) en fonction des besoins du processus, au moins un premier rouleau de déviation (22) est disposé à proximité du cylindre d'estampage (14), ledit rouleau de déviation pouvant être déplacé par rapport au cylindre d'estampage (14) dans le sens périphérique de celui-ci pour le réglage de l'écart entre la périphérie du rouleau de déviation et celle du ou des rouleaux de compression (16).
PCT/DE2002/004192 2001-12-05 2002-11-13 Machine d'estampage a chaud comportant une station d'estampage WO2003049923A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002350389A AU2002350389A1 (en) 2001-12-05 2002-11-13 Hot stamping machine comprising a stamping station

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10159661.8 2001-12-05
DE2001159661 DE10159661C1 (de) 2001-12-05 2001-12-05 Heißprägemaschine mit einer Prägestation

Publications (1)

Publication Number Publication Date
WO2003049923A1 true WO2003049923A1 (fr) 2003-06-19

Family

ID=7708081

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2002/004192 WO2003049923A1 (fr) 2001-12-05 2002-11-13 Machine d'estampage a chaud comportant une station d'estampage

Country Status (3)

Country Link
AU (1) AU2002350389A1 (fr)
DE (1) DE10159661C1 (fr)
WO (1) WO2003049923A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007044114B4 (de) 2007-09-16 2010-06-17 Chiron-Werke Gmbh & Co. Kg Werkzeugmaschine
DE102012110149B4 (de) 2012-10-24 2019-02-07 Leonhard Kurz Stiftung & Co. Kg Heißprägevorrichtung
DE102012110222B4 (de) 2012-10-25 2015-05-07 Leonhard Kurz Stiftung & Co. Kg Heißprägevorrichtung
DE102013102984B4 (de) 2013-03-22 2015-01-22 Leonhard Kurz Stiftung & Co. Kg Folienprägeeinrichtung
DE102016109044B3 (de) 2016-05-17 2017-07-06 Leonhard Kurz Stiftung & Co. Kg Vorrichtung zur Oberflächenbehandlung eines Substrats

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1173234B (de) * 1959-06-12 1964-07-02 Dornbusch & Co Kalander zum Heisspraegen von schnell durchlaufenden Warenbahnen aus thermoplastischen Kunststoffen
DE1504583B1 (de) * 1964-10-29 1972-06-29 Briem Hengler Cronemeyer Praegekalander zum Praegen von Warenbahnen,die zumindest teilweise aus thermoplastischem Material bestehen
DE2338446A1 (de) * 1973-07-28 1975-02-13 Kleinewefers Ind Impanie Co Gm Praegekalander fuer thermoplastische folien- oder verbundwarenbahnen
EP0153220A2 (fr) * 1984-02-10 1985-08-28 RECTICEL, Société dite: Machine perfectionnée pour le thermocollage de tissus ou films sur support souple ou rigide

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE943379C (de) * 1953-06-12 1956-05-17 J H Benecke Fa Vorrichtung zum Praegen und Beschneiden der Raender von thermoplastischen Kunststoffbahnen
DE3210551C2 (de) * 1982-03-23 1984-11-08 Fa. Leonhard Kurz, 8510 Fürth Verfahren und Vorrichtung zum Anbringen eines Prägefolien-Abdruckes auf einer flexiblen Materialbahn
DE4121766A1 (de) * 1991-07-01 1993-01-07 Kurz Leonhard Fa Vorrichtung zum uebertragen eines dekors von einer praegefolie auf eine materialbahn

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1173234B (de) * 1959-06-12 1964-07-02 Dornbusch & Co Kalander zum Heisspraegen von schnell durchlaufenden Warenbahnen aus thermoplastischen Kunststoffen
DE1504583B1 (de) * 1964-10-29 1972-06-29 Briem Hengler Cronemeyer Praegekalander zum Praegen von Warenbahnen,die zumindest teilweise aus thermoplastischem Material bestehen
DE2338446A1 (de) * 1973-07-28 1975-02-13 Kleinewefers Ind Impanie Co Gm Praegekalander fuer thermoplastische folien- oder verbundwarenbahnen
EP0153220A2 (fr) * 1984-02-10 1985-08-28 RECTICEL, Société dite: Machine perfectionnée pour le thermocollage de tissus ou films sur support souple ou rigide

Also Published As

Publication number Publication date
AU2002350389A1 (en) 2003-06-23
DE10159661C1 (de) 2003-02-20

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