WO1981003462A1 - Procede et dispositif pour colorer des objets en bandes et objets obtenus - Google Patents

Procede et dispositif pour colorer des objets en bandes et objets obtenus Download PDF

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Publication number
WO1981003462A1
WO1981003462A1 PCT/EP1981/000052 EP8100052W WO8103462A1 WO 1981003462 A1 WO1981003462 A1 WO 1981003462A1 EP 8100052 W EP8100052 W EP 8100052W WO 8103462 A1 WO8103462 A1 WO 8103462A1
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WO
WIPO (PCT)
Prior art keywords
roller
ink
printed
film
rollers
Prior art date
Application number
PCT/EP1981/000052
Other languages
German (de)
English (en)
Inventor
H Custor
Original Assignee
Laube R
H Custor
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 Laube R, H Custor filed Critical Laube R
Publication of WO1981003462A1 publication Critical patent/WO1981003462A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/26—Printing on other surfaces than ordinary paper
    • B41M1/30—Printing on other surfaces than ordinary paper on organic plastics, horn or similar materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for

Definitions

  • the invention relates to a method and a device for dyeing (printing) Baim-shaped objects, in particular ski coverings made of thermoplastics, such as olefins, in particular high-pressure and high-pressure polyethylene, and objects manufactured in this way, the side of the covering to be printed being used before or during the ink transfer is brought into a thermoplastic or melt state by the action of heat.
  • thermoplastics such as olefins, in particular high-pressure and high-pressure polyethylene
  • the middle section generally consists of a wood or hard foam core, which can be laminated on the side with thermosetting synthetic resin laminate;
  • the superstructure consists at least of an aluminum sheet and / or laminate of glass fiber reinforced plastic (GRP) glued to the core, whereupon a plastic film is laminated on as a covering, which is decoratively designed in further work processes;
  • GRP glass fiber reinforced plastic
  • the substructure itself consists of an aluminum sheet or a layer of glass fiber reinforced
  • Plastic that is glued to the core on one side and glued to the actual tread on the other side (eventually over various other layers eventually), which is generally a transparent 1 to 2 mm thick plastic covering , and preferably made of polyethylene, namely HDPE (high-density polyethylene) or polytetrafluoroethylene (Teflon) (Wz).
  • HDPE high-density polyethylene
  • Teflon polytetrafluoroethylene
  • the inside of the running surface (or the deck surface) is printed in order to reflect the ski manufacturer, type designations, etc. in particular; this pressure is then visible through the transparent covering.
  • an opaque topcoat including hardener is poured to create a background color layer for the transparent covering
  • This potting compound layer is then normally glued to a layer of glass fiber reinforced plastic (GRP) by means of an adhesive, but only after a few hours after the solvent has completely escaped from the potting compound, that is to say the mass has hardened.
  • GRP glass fiber reinforced plastic
  • the transfer printing process according to DE-OS 2 642 350 has also proven to be relatively complex and difficult to control.
  • the surface to be printed on high-pressure and low-pressure polyethylene is previously coated with a dye-affine thermoplastic layer, e.g. B. polyurethane or polyester layer is provided, which is printable without difficulty.
  • DE-OS 2642 350 thus clearly shows that it is not considered possible to print high-pressure or low-pressure polyethylene or similar materials directly. No way was seen.
  • DE-OS 2 731 121 it is now taught to print polyethylene, among other things, in that the side of the shaped body to be printed has a heat effect in contact with an intermediate pressure carrier, e.g. B. paper print carrier, is brought onto which a print image of first sublimable and then diffused dyes has previously been applied. 160 to 220.degree. 5 to 30 seconds is suggested as "sufficient" pressing time of the intermediate printing medium on the surface to be printed. Under these conditions specified in DE-OS 2 731 121, however, exactly the same migration problems occur which, according to DE-OS 2 642 350, one tries to avoid by coating the side to be printed beforehand separately.
  • an intermediate pressure carrier e.g. B. paper print carrier
  • the present invention has for its object to provide a method and an apparatus of the type mentioned, which ensures the sharp, contours-free, distortion-free brilliant prints with minimal material and machine expenditure.
  • the object is achieved by the teaching according to the characterizing part of claims 1 or 21 or claim 20.
  • the method according to the invention also makes it possible to dispense with an additional intermediate print carrier, as is generally customary in thermal transfer printing. Due to the lack of an intermediate print carrier, there can also be no problems with synchronism between this and the covering to be printed, and distortion problems caused thereby.
  • the sublimable and diffusible dyes that have been known for some time for printing on ski coverings made of plastics customary in ski construction, namely thermoplastics, in particular high or low pressure polyethylene, in such a way that the coverings are immediate, ie without additional dye-affine intermediate layers can be printed (cf. with regard to the dyes, for example, "Journal of the Society of Dyers and Colorists", Vol. 70, pp. 69-71 (1954); in the "Color Index", the category “disperse dyes”) .
  • Ski coverings or the like produced by the method according to the invention are distinguished by problem-free connection to a supporting body, for. B. ski body.
  • the invention also fundamentally avoids pretreatment of the printed matter in order to enable printing at all, as has hitherto become known for printing plastic, for. B. as the effect of electrical discharge, chemical agents (e.g. by etching) or the like:
  • the difficulties in printing olefins are seen not only in DE-PS 1 153 658 in the low affinity of the dyes for polyolefins, but also in the strong migration (cf. column 1, lines 11, 12).
  • the covering as a hot film of essentially melted state is brought continuously into contact with the ink carrier, the ink application taking place in a gap converging in the conveying direction of the film, which occurs together with the conveying speed of the film and the ink carrier is dimensioned such that an essentially wedge-shaped storage zone of melted film is formed.
  • the storage zone should be designed in such a way that there is practically no melt bead on the ink carrier by the ink "rolling". This ensures a distortion-free print image. In this case one speaks of a so-called "microbead”, which means so much that there is practically no bead.
  • the dyeing is preferably carried out in the area of a nip between a roller serving as an ink carrier, in particular a gravure roller, and a counter-roller, each of which is tempered.
  • a so-called “microwell measuring device” is advantageously provided, which is coupled in terms of control technology to the drives of the rollers mentioned, in such a way that if the bead increases too much, a signal is sent to the Drives of the rollers is released, which causes a change in the roller speed, such that the bead on again.
  • the height of the desired "microbead” drops.
  • the ink cups have different depths from 1 to 40 / u, depending on the desired color intensity.
  • a rotogravure roller as an ink carrier, in addition to the possibility of fine regulation of the color intensity and thus the production of printed images with semitones, has the advantage that its scope can be selected such that it is the length of a ski covering or the printing length of a ski covering corresponds. This means that ski coverings can be printed continuously in line with the ski.
  • the counter roller is preferably provided with an embossing surface, so that an embossing of the covering on the side opposite the printing side can take place simultaneously with the printing.
  • the printed covering or the printed film can be laminated onto a reinforcing material layer in a subsequent work process by means of a transparent or bright adhesive.
  • a polyurethane adhesive is then preferably used as the adhesive.
  • a lightly colored glass fiber reinforced plastic can be used as the reinforcement material layer.
  • the lamination is preferably carried out under the influence of heat.
  • this or these is treated from the printed side by high-frequency corona discharge or oxidizing flaming.
  • the printed film can also be treated chemically (with a primer).
  • the print image is preferably transferred to the ink carrier or the ink carrier roller by a transfer roller (offset roller).
  • the transfer roller which is preferably cooled, interacts with at least one, advantageously two or three high-pressure rollers for applying the print image to be transferred. Using the high-pressure rollers, printed images of different colors are printed on the transfer rollers, the printed images not overlapping.
  • the ink carrier roller can also be assigned a cleaning device, preferably a cleaning roller which is guided through a solvent bath or the like. This ensures that flawless, ie. H. clean print images can be obtained.
  • Fig. 1 shows schematically a first embodiment of a printing device according to the invention
  • Fig. 2 shows a second embodiment of a printing device for multi-color printing, also in a schematic view.
  • thermoplastic material (HD polyethylene) emerges from an extrusion tool 11 in the form of a melting plume, which is conveyed through a nip formed between an inking roller 10 and a counter roller 12, in which it continuously abuts the inking roller 10 brought.
  • the roller gap is dimensioned such that a wedge-shaped accumulation zone 18 is formed.
  • the first stage of printing takes place in this storage zone.
  • the printed film 14 ' is guided over a larger angle of the circumference of the counter or conveyor roller 12, preferably on a tempering device, not shown, with controlled decrease the temperature from the nip in the conveying direction over until the printed film 14 'is removed to a winding roll, not shown, via a deflecting roll 10.
  • the printed film 14 ' preferably also runs past an aftertreatment device which acts by means of a high-frequency corona discharge or oxidizing flaming.
  • rollers 10, 12 are shown with essentially the same diameter, it goes without saying that their diameter can be quite different, the ink carrier roller 10 preferably having a diameter which is dimensioned such that the circumference is approximately the printing length of a ski covering corresponds.
  • the ink carrier roller is a gravure roller with ink cup known from paper printing Chen 20, which have a depth between about 1 to 40 / u, wherein the depth of the ink cups affect the color intensity. The deeper the ink cup, the more intense the respective color point on the film 14.
  • the ink cups 20 also prevent the ink from being "smeared away" in the roller gap or in the accumulation zone 18 against the direction of rotation of the ink carrier roller 10.
  • the ink cups 20 guarantee absolutely distortion-free Printed image.
  • the inking roller 10 is moved through an ink bath 22 of an ink transfer device 16 for receiving the printing ink, excess ink being wiped off by a squeegee 24, such that there is only ink in the ink cups 20.
  • the ink stripped from the doctor blade 24 is returned to the ink bath 22.
  • the dye bath 22 is preferably cooled. This ensures that the ink absorbed by the ink carrier roller 10 does not dry too quickly in the ink cups 20. A slight drying is only harmless if a color which can be reactivated under pressure and / or heat (as in the storage zone 18) is used as the printing ink.
  • the nip length 1 is strictly to be understood as the length of the accumulation zone 18, and between the first impact of the film 14 on the circumference of the rollers 10, 12 in the conveying direction (see arrow) and the narrowest point corresponding to the roller gap width s, the roller gap (see the two broken lines in FIG limit the double arrow 1).
  • P denotes the line pressure over the circumference of the rollers 10, 12.
  • the temperature distribution of the film 2 over the circumference of the roller 12 can be seen from the corresponding diagram "film temperature" in Fig. 1.
  • This temperature distribution is due to the fact that the film 14, which in any case emerges from the extrusion die 11 at a high temperature, specifically at approximately 225 ° C. for high-molecular polyethylene, then becomes troiz of the heat supply from the rollers 10 and 12 (e.g. by means of oil circulation heating) to temperatures of e.g. B. are heated to about 50 to 70 ° C or 70 to 110 ° C, cools when leaving the nip.
  • the printed film is continuously cooled in such a way that the film with the printed image changes from the thermoplastic to the solid state in such a temperature-controlled manner that it does not warp and the image is not distorted. It is recommended for gradual cooling to use the aforementioned tempering device, which, for. B. can be formed by a hot air flow channel or by infrared radiators.
  • the two rollers 10, 12 are driven so that the desired zero relative speed between the melt material and the inking roller 10 is obtained in the accumulation zone, which a clean, i.e.. H. ensures distortion-free printing.
  • the speeds or peripheral speeds of the two rollers 10 and 12 must be set so that only a small melt bead (micro bead) is formed on the ink carrier roller 10. It must be avoided that the applied paint "rolls" with the melt in the bead.
  • a corresponding device 34 is preferably provided to maintain the desired “micro-twist” and is coupled to the drives of the two rollers 10, 12.
  • the device 34 comprises, for. B. a photoelectric transmitter and receiver, which are arranged such that the transmission beam the gusset between the supplied hot film 14 and the ink roller 10th traverses just above the "microbead” so that it is interrupted if the bead rise is too great, as a result of which a signal is sent to the drives of the rollers 10 and / or 12, which causes the roller speeds to change in such a way that the bead is back up of the desired "microbead” drops.
  • the device 34 is particularly important because the composition of the polyethylene can change slightly during a batch or from batch to batch, with the result that the melt bead then also changes with the process conditions remaining unchanged. Such bead changes can be corrected quickly by means of the device 34
  • the surface of the counter or conveyor roller 12 is preferably designed as an embossing surface, so that the film 14 can be printed and embossed at the same time.
  • the printing ink is preferably mixed with a relatively high-boiling solvent, so that on the way from the ink transfer device 16 to the accumulation zone 18 there is no premature evaporation and drying of the ink on the gravure roller.
  • a sublimation ink is preferably used as the printing ink.
  • a paint which can be "welded” under pressure and / or heat and which in the area of the storage zone is intimately bonded to the melted or melted thermoplastic material of the film 14.
  • the throughput speed of the film 14 or printed film 14 'to be printed is approximately 3 m per minute.
  • the arrangement of the extrusion tool 11 can be done with its opening relative to the nip must be made such that the inlet angle of the film 14 is approximately 10 to 15 ° to the nip central axis, specifically towards the ink carrier roller 10.
  • This measure contributes significantly to the maintenance of a "microbead", especially when changing the roller diameter.
  • the cell or grid surface of the rotogravure roller 10 contributes to the enlargement and roughening of the printed surfaces, with the advantage that both greater specific adhesive forces are created and the adhesive is prevented from being squeezed out when pressed with a ski body or the like, and a more uniform one Experience distribution.
  • the exemplary embodiment shown in FIG. 2 differs from the exemplary embodiment shown in FIG. 1 essentially only in the differently designed ink transfer device 16.
  • This includes a transfer roller 28, which is preferably cooled, and by means of which the ink or printed images are applied to the actual ink carrier roller 10 'is transmitted.
  • the ink carrier roller 10 ' is provided with an essentially smooth roller surface.
  • the run-in angle of the film 14 in this exemplary embodiment is selected to be approximately 10 to 15 ° to the roller gap center axis, specifically towards the ink carrier roller 10 '. This measure has proven to be particularly advantageous. It has been shown that absolutely distortion-free printed images are obtained on the film 14.
  • the roller temperatures and gap dimensions in the exemplary embodiment according to FIG. 2 are the same as in the exemplary embodiment according to FIG. 1.
  • the transfer of the color or printed images to the transfer roller or offset roller 28 takes place by means of two push-up rollers 30, 32, the printing matrices interacting with ink rollers 38, 40, each of which is operated by an ink bath 42 , 44 are moved through.
  • the device shown in FIG. 2 permits multi-color printing, the high-pressure rollers 30, 32 then applying ink to the transfer roller 28 in such a way that the printed images do not overlap on the transfer roller 28.
  • the dye bath 42 may e.g. B. contain a red and the color bath 44 a blue or green color.
  • the transmission or. Offset roller 28 is preferably covered with a rubber blanket for better ink absorption.
  • a cleaning roller 26 guided through a solvent bath is provided for cleaning the ink carrier roller 10 '. It is a very low-boiling solvent which has evaporated at the latest at the transfer point between the transfer roller 28 and the ink carrier roller 10 '.
  • the solvent bath is connected to a solvent cleaning device, not shown, which is provided with an exchangeable filter for filtering off the paint residues detached from the ink carrier roller 10 '.
  • the counter or conveying roller 12 can be provided with an embossing profile in order to simultaneously emboss the film which will later serve as a covering, when the film 14 is printed, if z.
  • the surface should be provided with climbing aids (e.g. shed) for cross-country skiing.

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  • Printing Methods (AREA)

Abstract

Dans le procede pour colorer (imprimer) des objets en bandes, tels que revetement de ski (14) en matiere thermoplastique, par exemple des olefines, en particulier le polyethylene haute et basse pression, on amene au moins le cote a etre imprime du revetement dans un etat thermoplastique ou de fusion par un apport de chaleur, avant ou pendant le transfert des couleurs. On transmet la couleur au revetement (14) au moyen d'un cylindre helio (10) sur lequel les couleurs sont constamment renouvelees, en appuyant le revetement (14) continument contre le cylindre (14) de facon que les couleurs ne soient transferees que selon une bande etroite, transversalement par rapport a la direction de l'avance du revetement. Les couleurs utilisees, soit sont d'abord sublimables et puis diffusables, soit peuvent se melanger intimement avec la matiere thermoplastique en fusion sous l'influence de la pression ou de la temperature. Le transfert des couleurs s'effectue de preference dans l'interstice entre deux cylindres (10, 12; 10', 12) dont l'un (12) est entoure du revetement (14) et dont l'autre (10, 10') sert de porte-couleurs et collabore avec un organe de transfert des couleurs (16). Les deux cylindres (10, 12; 10', 12) sont entraines de facon a avoir la meme vitesse circonferentielle.
PCT/EP1981/000052 1980-06-03 1981-05-21 Procede et dispositif pour colorer des objets en bandes et objets obtenus WO1981003462A1 (fr)

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DE3021011 1980-06-03
DE3021011 1980-06-03

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984003257A1 (fr) * 1983-02-28 1984-08-30 Colour Activated Transillumina Procede d'impression
WO1995032771A1 (fr) * 1994-06-01 1995-12-07 Isosport Verbundbauteile Gesellschaft M.B.H. Procede de production en continu d'un materiau decore de revetement pour skis
EP1795345A1 (fr) * 2005-12-09 2007-06-13 DeMaxZ AG Appareil et procédé pour appliquer une couleur ou un vernis sur un substrat
DE102011118609A1 (de) * 2011-11-09 2013-05-16 Hans Demanowski Vorrichtung und Verfahren zur Herstellung bedruckter bahnförmiger Materialien

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB600999A (en) * 1945-12-07 1948-04-23 William Elliott Frew Gates Printed sheet materials
US3255695A (en) * 1963-10-16 1966-06-14 Markem Machine Co Method of printing and apparatus therefor
US3264385A (en) * 1963-01-14 1966-08-02 American Scient Corp Method of casting a printed pattern on a plastic sheet
FR1555039A (fr) * 1968-01-30 1969-01-24
DE1927104A1 (de) * 1968-05-28 1969-12-18 Magid Eugene Aaron Druck-Praegeapparat
DE1769601A1 (de) * 1967-06-23 1971-07-01 Ciba Geigy Ag Verfahren zum Faerben von synthetischen organischen Materialien
DE2337257A1 (de) * 1973-07-21 1975-02-06 Wilfried Philipp Anbau-rotationsdruckwerk fuer kunststoffextruder
US4059471A (en) * 1972-09-25 1977-11-22 Haigh John M Transfer dyeing of plastic surfaces which may be combined with lamination or molding procedures
DE2731121A1 (de) * 1977-07-09 1979-01-18 John Kurt O Verfahren zur herstellung von bindemittelfreien drucken auf oberflaechen von formkoerpern aus thermoplastischen kunststoffen mit dispersionsfarbstoffen
DE8016737U1 (de) * 1980-10-16 Cp. Components Gmbh Kunststoff-Bauuteile 8225 Traunreut Vorrichtung zum Bedrucken der Oberfläche eines Gegenstandes, insbesondere von Skibelägen aus Niederdruck-Polyäthylen
DE8015402U1 (de) * 1980-06-03 1980-10-30 Cp Components Gmbh Kunststoff-Bauteile, 8225 Traunreut Bahnfönniger Skibelag
EP0033776A2 (fr) * 1980-02-07 1981-08-19 CP Components GmbH Kunststoff-Bauteile Procédé et dispositif de mise en couleur ou d'impression d'objets en forme de bande, en particulier de garnitures de ski, et objets d'une telle nature

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8016737U1 (de) * 1980-10-16 Cp. Components Gmbh Kunststoff-Bauuteile 8225 Traunreut Vorrichtung zum Bedrucken der Oberfläche eines Gegenstandes, insbesondere von Skibelägen aus Niederdruck-Polyäthylen
GB600999A (en) * 1945-12-07 1948-04-23 William Elliott Frew Gates Printed sheet materials
US3264385A (en) * 1963-01-14 1966-08-02 American Scient Corp Method of casting a printed pattern on a plastic sheet
US3255695A (en) * 1963-10-16 1966-06-14 Markem Machine Co Method of printing and apparatus therefor
DE1769601A1 (de) * 1967-06-23 1971-07-01 Ciba Geigy Ag Verfahren zum Faerben von synthetischen organischen Materialien
FR1555039A (fr) * 1968-01-30 1969-01-24
DE1927104A1 (de) * 1968-05-28 1969-12-18 Magid Eugene Aaron Druck-Praegeapparat
US4059471A (en) * 1972-09-25 1977-11-22 Haigh John M Transfer dyeing of plastic surfaces which may be combined with lamination or molding procedures
DE2337257A1 (de) * 1973-07-21 1975-02-06 Wilfried Philipp Anbau-rotationsdruckwerk fuer kunststoffextruder
DE2731121A1 (de) * 1977-07-09 1979-01-18 John Kurt O Verfahren zur herstellung von bindemittelfreien drucken auf oberflaechen von formkoerpern aus thermoplastischen kunststoffen mit dispersionsfarbstoffen
EP0033776A2 (fr) * 1980-02-07 1981-08-19 CP Components GmbH Kunststoff-Bauteile Procédé et dispositif de mise en couleur ou d'impression d'objets en forme de bande, en particulier de garnitures de ski, et objets d'une telle nature
DE8015402U1 (de) * 1980-06-03 1980-10-30 Cp Components Gmbh Kunststoff-Bauteile, 8225 Traunreut Bahnfönniger Skibelag

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984003257A1 (fr) * 1983-02-28 1984-08-30 Colour Activated Transillumina Procede d'impression
EP0121323A1 (fr) * 1983-02-28 1984-10-10 Colour Activated Transillumination Systems Ltd. Procédé pour l'impression
WO1995032771A1 (fr) * 1994-06-01 1995-12-07 Isosport Verbundbauteile Gesellschaft M.B.H. Procede de production en continu d'un materiau decore de revetement pour skis
US5731072A (en) * 1994-06-01 1998-03-24 Isosport Verbundbauteile Gesellschaft M.B.H. Continuous process for producing a decorated ski coating material
AT404899B (de) * 1994-06-01 1999-03-25 Isosport Verbundbauteile Kontinuierliches verfahren zur herstellung eines mit einem dekor versehenen belagsmaterials für skier, snowboards od.dgl.
EP1795345A1 (fr) * 2005-12-09 2007-06-13 DeMaxZ AG Appareil et procédé pour appliquer une couleur ou un vernis sur un substrat
DE102011118609A1 (de) * 2011-11-09 2013-05-16 Hans Demanowski Vorrichtung und Verfahren zur Herstellung bedruckter bahnförmiger Materialien
DE102011118609B4 (de) * 2011-11-09 2014-06-12 Hans Demanowski Vorrichtung und Verfahren zur Herstellung bedruckter bahnförmiger Materialien

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