EP1557207A1 - Dekoration eines Mehrschichtenprodukts, insbesondere eines Wintersportgeräts - Google Patents

Dekoration eines Mehrschichtenprodukts, insbesondere eines Wintersportgeräts Download PDF

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Publication number
EP1557207A1
EP1557207A1 EP05100337A EP05100337A EP1557207A1 EP 1557207 A1 EP1557207 A1 EP 1557207A1 EP 05100337 A EP05100337 A EP 05100337A EP 05100337 A EP05100337 A EP 05100337A EP 1557207 A1 EP1557207 A1 EP 1557207A1
Authority
EP
European Patent Office
Prior art keywords
decoration
layer
ink
semi
product 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.)
Withdrawn
Application number
EP05100337A
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English (en)
French (fr)
Inventor
Zef Breukers
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.)
SITRA AG
Original Assignee
Gurit Ittigen AG
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
Priority claimed from EP04001355A external-priority patent/EP1557206A1/de
Priority claimed from EP04013693A external-priority patent/EP1604814A1/de
Application filed by Gurit Ittigen AG filed Critical Gurit Ittigen AG
Priority to EP05100337A priority Critical patent/EP1557207A1/de
Publication of EP1557207A1 publication Critical patent/EP1557207A1/de
Withdrawn legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/12—Making thereof; Selection of particular materials
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/003—Structure, covering or decoration of the upper ski surface

Definitions

  • the invention is related to a process of applying a decoration to an especially area-measured device, especially a (winter) sports apparatus, possessing a multi-layered structure, devices and semi-finished sheet products obtainable by said process and the use of crosslinkable, preferably irradiation curable color agents within said purpose.
  • a winter sports apparatus such as e.g. skis and snowboards possess a core structure, commonly made from wood or synthetic material such as urethane foam.
  • a ski further possesses a reinforcing, upper layer ("Obergurt"), made from synthetic fibers such as e.g. glass, carbon or aramids, typically connected to the core structure by e.g. an epoxy resin.
  • a plastic protective layer is currently always provided, usually referred to as top surface.
  • decorations such as text, images or the like are applied.
  • the protective layer is applied in order to provide abrasion- and impact resistance, and needs to withstand dynamic load and temperature conditions which are common in outdoor use.
  • additional lacquers or varnishes are applied for increased scratch and UV resistance and control of glossy or matt surface appearance.
  • Silk screen printing is a discontinuous process, wherein each surface is decorated with individual, investment-intensive equipment, i.e. individual screens for each decoration. Each color needed for the decoration is to be applied and dried separately, rendering the process highly time-consuming and elaborative. Moreover, expensive inks are required if the device is to be used under high dynamic loads, as is the case e.g. for winter sports apparatuses, in order to assure improved resistance to peeling, shearing and shock impact in the device.
  • the dye sublimation technology is characterized in that especially multi-colored patterns are printed on a carrier, e.g. paper and are subsequently transferred to the protective top surface plastic sheet, e.g. of a ski, discontinuously in a thermal press cycle or continuously in a roll calender.
  • a carrier e.g. paper
  • the protective top surface plastic sheet e.g. of a ski
  • PA11 or PA 12 need to be used in order to resist these temperatures.
  • this technique is prone to a relatively high transfer failure rate.
  • Another disadvantage of dye sublimation is that it is not a WYSIWYG technique, i.e. transferred colors may appear different as initially expected.
  • the manufacture of a winter sports apparatus involves several lamination steps of different layers, typically comprising heated press cycles of heating in the range of e.g. up to 90-140°C or even higher, typically for about 5 to 20 minutes at pressures of about 2 to 15 bars; conventional color agents such as e.g. toners or solvent based or aqueous inks would not be stable under these conditions, thus blurring of the decoration would occur.
  • conventional thermoplastic toners with glass transition temperatures in the range of about 50°C to 80°C and melting temperatures below 120°C and conventional solvent-based and aqueous ink-jet inks are not preferably suitable for such processes.
  • the invention is inter alia related to a process of applying an especially ink-jetted decoration to a device, preferably a sports apparatus, most preferably a winter sports apparatus.
  • the decoration layer such as a text, logo, image or the like is preferably ink-jetted.
  • the glass transition temperature of the especially ink-jetted decoration is preferably increased by chemically crosslinking the decoration to a level at which it will withstand the above-mentioned parameters of temperature and pressure, especially at least for times of about 5 to 20 minutes, remain stable, and does not flow, i.e. to avoid especially blurring of the decoration, visible by the unaided eye.
  • a more flexible material can be chosen for the basic layer in contrast to the prior art, thus facilitating the application of the decoration.
  • the decoration may be applied on only one single or even both area-measured sides thereof.
  • the decoration may furthermore be oriented suchlike within the finished device to face either outwards or inwards, when a transparent basic layer is chosen.
  • the decoration was applied directly onto the inwards directed face of an outer, transparent protective sheet, which is relatively thick and stiff, whereby an efficient work-flow (i.e. separate production, supply and storage of semi-finished products, e.g. decorations) in the production of the device was hampered.
  • ink-jet technology allows for a larger variety of substrates to be printed on as e.g. compared to laser printing, because the substrate does not need to be temporarily charged for the transfer of the color agent.
  • disadvantage of conventional ink jet printing or plotting i.e. being a rather slow process, additionally commonly resulting in horizontal lines within the image (known as "bending lines"), has been overcome by recent developments in ink-jet technology.
  • the Dotfactory digital ink-jet press (Agfa-Dotrix, Ghent, Belgium) works with fixed color-bars covering the whole width of the substrate, one for each color. Thus, this process is rather rapid and does not generate horizontal lines as known from conventional ink-jet printers.
  • crosslinkable dry toners may be used according to the invention.
  • series of at least two crosslinkable color agents may be applied, being crosslinkable with each other and/or to other adjacent layers such as e.g. a basic layer, a protective sheet or a running surface.
  • the process according to the invention of applying a decoration to a device involves the steps of:
  • a crosslinkable substance especially an ink-jettable ink
  • a remarkably improved resistance against delamination under dynamic load is achieved, both within the decoration and especially at the interface to adjacent layers such as e.g. a reinforcing layer ("Obergurt” or “Schgurt") and an outer surface such as e.g. the protecting sheet or the running surface of a ski or snowboard, which was a major drawback of the prior art.
  • chemically crosslinked color agents such as e.g. UV-cured ink-jettable inks strikingly enhance the strength of the bonding to both adjacent layers in a ski construction.
  • UV-cured inks preferably UV-cured inks will not become unstable, will not flow, nor will they cause blurring of the decoration during further manufacturing in e.g. presses under high temperatures, such as commonly applied in the production of a winter sports apparatus such as e.g. ski or snowboard.
  • the formulation of UV- and electron-beam curing ink systems is commonly known in the art (e.g. reviewed in "The printing ink manual", 5 th Edition 1993; Blueprint (Chapman & Hall); R.H. Leach, R.J. Pierce (Eds.); Chapter 11; included herewith by reference) and may be easily adapted for special purposes by the person of routine skill in the art.
  • an "initiator package” is included in the ink (e.g. benzophenone as initiator and triethanolamine as a synergist), together with prepolymer resins containing activated carbon-carbon double bonds such as e.g. polyurethane acrylate, polyester acrylate and epoxy acrylate.
  • a winter sports apparatus may be any kind of device intended for use on snow and/or ice, e.g. skis, snowboards, etc.; according to the invention, the decoration may be applied either to the top surface or the running surface of the device.
  • the invention is especially useful for devices that are exposed to dynamic loads such as shear load. It is obvious to the person of routine skill in the art to implement the invention also to other sports and/or outdoor devices such as e.g. skate-boards, surf-boards, etc..
  • the term color agent comprises any kind of substances known in the art for coloration and/or decoration of substrates.
  • Preferred color agents are especially ink-jetable inks; however, dry toners may also be used, especially applied in separate, inter-crosslinkable layers.
  • the differently colored inks e.g. CMYK
  • CMYK complementary metal-oxide-semiconductor
  • the differently colored inks are routinely ink-jetted only besides each other; half-tones of colors are achieved for the unaided eye by arranging dots of the basic colors besides each other which occasionally might coagulate to 'mixed' droplets of ink in case they flow into each other, before being crosslinked.
  • inks with lower pigment content are arranged in up to three layers (e.g. Canon PhotoRealism).
  • the ink is chemically crosslinked according to the invention, whereby a 3-dimensional framework is obtained.
  • crosslinking is used in the sense of chemical crosslinking. Crosslinking may thereby occur via an ionic or, especially preferred, a radical pathway.
  • an irradiation source suitable for initiation of an ionic and/or radical pathway may be used.
  • curing and/or crosslinking is effected by means of microwave or radio frequency, infra-red, electron beam or, especially preferred, ultra-violet (UV).
  • curing and/or crosslinking is based on the presence of activated carbon-carbon double bonds such as acrylates, methacrylates, allyl, styrenyl or vinyl.
  • any other suitable process known in the art of polymerization may be applied for crosslinking of the different color agents.
  • any kind of initiation may be applied such as e.g. moisture-curing and/or -crosslinking systems and/or heat-curing and/or -crosslinking systems.
  • chemically blocked reagents such as deactivated isocyantes or the like; deactivation of isocyanates with e.g.
  • 1° or 2° aliphatic amines, di- or polyamines, hydrazine derivatives, amidines or guanides is known to the person of routine skill in the art) or micro-encapsulated reagents (both to liberate by either moisture, heat, irradiation or the like) may be used.
  • the irradiation curable color agents preferably ink-jettable UV-curable inks such as the Agorix® series from Agfa-Dotrix
  • a digital printing process preferably a high resolution digital press, most preferably an ink-jet digital press.
  • Preferred digital ink-jet presses are commercially available, e.g. TheDotFactory (Agfa-Dotrix NV, Ghent, Belgium); or the like.
  • TheDotFactory A special advantage of TheDotFactory is that the printing station covers the whole width of the substrate to be printed on. Thus, the substrate passes the stationary color bars only once, allowing for a high throughput.
  • an in-line, high power corona plasma pretreatment immediately before ink-jetting the indivial colors of ink is performed, which is especially preferred for further enhancement of the bonding between ink and substrate, followed by an in-line UV-curing unit immediately after the SPICE® ink jet unit using preferably mercury-doped and/or iron-doped high power UV-lamps.
  • high-transparency and high-toughness polypropylenes such as Clyrell 7173XCP, Basell, Hoofddorp, The Netherlands
  • pure TPUs such as Elastollan L74D (Elastogran, Lemförde, Germany) could not be used as a top surface material, since bonding of these materials onto a ski or snowboard was technically not possible: delamination occurred under dynamic load at the interface between the decoration and the top surface material, e.g. the protective sheet and/or the running surface.
  • a decoration consisting of a layer of a chemically crosslinked substance, especially UV-cured inks, work as a bonding enhancer to such materials by in-situ formation of a three dimension chemical network most likely also between these materials and the inks used as decoration.
  • a large variety of surface materials is suitable in combination with the method of decoration described herein, e.g.
  • extrudable COC polymers Topicas®, Ticona, Frankfurt, Germany
  • polycarbonates Liexan , General Electric Plastics, Bergen op Zoom, The Netherlands
  • PC blends such as PC/PET and others
  • polyamides such as PA 11, PA 12 (Rilsan®, Atofina Chemicals, Paris-La Defense, France) and amorphous polyamides, such as extrudable Trogamid® grades (Degussa, Marl, Germany).
  • the protective layer itself can also be made of a UV-crosslinkable lacquer, e.g. Lumillux 003 and 008 provided by Switzerland).
  • Protective layers may thus be provided as foils of thickness of 0.01 to 0.1 mm, which are excellently compatible with additional decorations according to the invention due to their highly related, e.g. urethane acrylate-based chemistry.
  • the basic layer to be attached to the core construction of the device is made from plastic, especially comprising polyethylene terephtalate (PET)(e.g. Melinex 329K, Dupont de Nemours, Wilmington, DE, USA).
  • PET polyethylene terephtalate
  • the basic layer is white in order to aid the appearance of the decoration; especially white basic layers are preferred in order to 'hide' undesired patterns, roughnesses and discolorations of underlying layers.
  • the basic layer is only about 50 - 75 ⁇ m thick; after decoration of such a basic layer, a lacquer or varnish is applied directly onto the decoration as a protective sheet, thus reducing the overall weight of the final device.
  • suitable adhesives known to the person of routine skill in the art are preferably used. These adhesives need to be adapted to the materials to be connected and may be applied as bulk material or film.
  • surface flame treatment with a Pyrosil® additive may be used for attachment of the decorated basic layer to the core construction.
  • the invention moreover relates to a semi-finished sheet product for manufacturing of a device, preferably a sports apparatus, most preferably a winter sports apparatus, comprising
  • Such a semi-finished product is resistant to blurring of the decoration under normal heat press cycles typically applied in e.g. ski and snowboard manufacturing. Morevover, delamination within the decoration layer and/or to adjacent layers, especially a protective layer made of Duraclear 92078, Duraclear 92161 or Duraclear 92204 (IMS Kunststoffe AG, Worb, Switzerland), is avoided, especially under dynamic shear loads commonly occurring in use of e.g. skis or snowboards.
  • the semi-finished product preferably comprises a basic layer carrying an especially ink-jetted decoration layer, which is chemically crosslinked within itself and at least with the interface of of the substrate material onto which it is applied in the digital press (protective sheet or basic layer).
  • a laminate comprising the preferably already cured and crosslinked decoration layer on a basic layer or protective layer can be easily provided, shipped and stored e.g. on rolls, thus facilitating the overall course of production and making it more flexible.
  • a semi-finished product according to the invention may be supplied to the manufacturer of the final device e.g. pre-assembled (e.g. laminated) to the protective top surface layer or running surface. After commonly used heat press cycles of the production line of e.g. ski and snowboard manufacturing, additional protective lacquers or varnishes may be applied.
  • a device especially a winter sports apparatus, is preferably made by a process outlined above and/or by using a semi-finished product outlined above, especially a laminated sheet product, comprising an especially ink-jetted decoration layer on a basic layer or, especially preferred a protective sheet or running surface, wherein the decoration layer is crosslinked in itself and with an adjacent layer by means of an outer influence such as irradiation, heat or moisture, especially UV-irradiation.
  • a device 1, especially a winter sports apparatus, possessing a multi-layered structure is built up on a core construction 5.
  • the core construction 5 is mostly made from epoxy resin such as 100 parts by weight of Araldite 136N with e.g. 35 parts by weight of Araldite HY 991 (Vantico, Huntsman, Eversberg, Belgium).
  • the device 1 comprises a decoration made up from at least one layer, exemplarily at least two layers of irradiation curable color agents 2A,2B,2C,2D contained in a decoration layer 2, which is applied to a basic layer 3, preferably by means of a digital printing process such as ink-jet printing.
  • UV-curing and crosslinkable color agents 2A,2B,2C,2D preferably inks are commonly available e.g. ProJet T1A from Avecia Ink Jet Printing Materials (Blackley, Manchester, England).
  • crosslinkable dry toners may also be used as color agents according to the invention. Suitable toners were prepared by mixing and homogenizing commercially available dry toners with equally grain-sized, crosslinkable components such as triallyl isocyanurate (TAIC; Sartomer, Exton, PA, USA).
  • TAIC triallyl isocyanurate
  • the necessary amount of the crosslinkable component to be added to the color agent in order to achieve a sufficient increase of the glass transition temperature Tg of the decoration is easily to determine by routine experiments of the person of routine skill in the art.
  • Target is to ensure a vitrificated stage of the crosslinked color agent, especially the crosslinked ink under conditions used in the ski or snowboard press.
  • the basic layer 3 is e.g.
  • the protective layer may, instead of a thermoplastic, also be a UV-crosslinked lacquer, made of or essentially comprise a crosslinked substance, especially made of or essentially comprising a crosslinked ink, such as Lumillux 003, made by Switzerland).
  • a crosslinked ink such as Lumillux 003, made by Switzerland.
  • especially irradiation curable and crosslinkable color agents, preferably inks in a decoration layer 2 are used for the decoration, whereby a strikingly enhanced bonding especially to the protective sheet and/or the basic layer, as well as to a standard (UHMw)PE running base material is achieved.
  • a semi-finished laminated sheet product comprising the basic layer 3 and the decoration layer 2 may be produced, stored and supplied (e.g. on rolls) separately from the production of device 1, thus facilitating logistic needs significantly.
  • Such a semi-finished laminated sheet is to be connected to the protecting sheet 4, e.g. by means of a suitable adhesive 6A, e.g. a polyurethane-based, thermoplastic adhesive film such as e.g. Puro L (Collano Xiro AG, Sau).
  • Thermosetting adhesives such as one-component urethane based systems or suitable epoxy resin systems, can also be utilized to achieve this.
  • Duraclear IMS Kunststoff AG, Worb, Switzerland
  • an appropriate adhesive 6B may also be chosen for the connection of the basic layer 3 to the core construction 5; in this embodiment, Puro L (Collano Xiro AG, Schmitten, Switzerland) was chosen, too.
  • suitable adhesives for any mentioned connection is within the routine knowledge of the person skilled in the art; especially, hot melt adhesives, preferably based on co-polyester resins, such as XAF 37.204 and XAF 37.304 (Collano Xiro AG, Schmitten, Switzerland) may also be used.
  • additional layers or not need to be integrated in addition to the adhesives 6A, 6B in order to achieve a suffiently delamination-resistent laminate can be easily investigated by routine experiments.
  • a flame treatment of the PET basic layer with Pyrosil® flame additives as provided by Sura Instruments (Jena, Germany) may be used in order to improve the bonding strength of the adhesive system onto the PET film.
  • irradiation curable color agents are used, these layers are applied by means of a digital printing process, preferably a high resolution digital press.
  • a digital printing process preferably a high resolution digital press.
  • Preferred high resolution digital presses are commercially available, e.g.
  • Xeikon DCP 320/500 simplex or duplex machines (Xeikon International, Lier, Belgium); HP Indigo w3200 digital press (HP Indigo, Maastricht, The Netherlands); Agfa Chromapress (Agfa-Gevaert, Mortsel, Belgium); Xerox Docucolor 70 and 100 (Xerox Corp., Stamford, CT, USA), IBM Infocolor 3170 and IBM Infoprint Color 130 (IBM Corp., Armonk, NY, USA); or the like.
  • Such high resolution digital presses are especially preferred because of their high quality of reproduction (600 dpi or even higher) and their capacity.
  • the layer thickness of each color agent is within the range of about 5 to 8 ⁇ m.
  • Fig. 2 schematically shows a further, especially preferred embodiment according to the invention.
  • the decoration layer 2 may be directly applied on the inwards-directed face of the protective layer 4, preferably ink-jetted after corona plasma pre-treatment, and finally UV-curing of the ink-jetted decoration.
  • This semi-finished product can be fixed to the core construction 5 of a ski e.g. by means of an adhesive 6B, e.g. an epoxy resin.
  • an adhesive 6B e.g. an epoxy resin.
  • the connection of the core construction e.g.
  • the decoration may also be directly applied by a method as outlined above to the inwards-directed surface of an at least partially transparent running surface of e.g. a ski, if so desired.
  • This embodiment shows the enhanced bonding of decorations to e.g. a TPU sheet as a top surface by a decoration layer according to the invention:
  • a decoration according to the invention was directly printed on the envisaged backside of an extruded foil of 100% Elastollan L74D (Elastogran GmbH, Lemförde, Germany) of 0.6 mm of thickness.
  • TheDotFactory (Agfa-Dotrix; Agfa-Gevaert) technology as outlined above (digital press and therewith supplied inks) was used for printing of the decoration.
  • Vantico AW1137 epoxy resin (Huntsman/Vantico, Eversberg, Belgium; 100 parts by weight), supplied with HY5049 hardener (Huntsman/Vantico, Eversberg, Belgium; 30 parts by weight) was used.
  • the laminate was built up on a roughened aluminium plate (Article 93008508, anodised Titanal Aluminium, supplied by Amag Rolling, Ranshofen, Austria), simulating the core of the ski.
  • the following constructions were laminated in a lamination press at 130°C during 15 minutes at a pressure of 6 bars (whereby flowing of the TPU was prevented by a steel frame):
  • the layer of a crosslinked substance here the decoration layer of an ink-jetted ink, strikingly enhances the achievable bonding strength to the TPU protective layer, which conventionally was the weak spot in the overall laminate.
  • This embodiment further underlines the enhanced bonding strength of crosslinked, e.g UV-cured, ink-jetted decoration layers, compared to conventionally applied ink-jet decorations. All decorations were printed onto Duraclear 92078 (IMS). Aluminium plates and epoxy resin were used analogous to Comparative Embodiment 1; lamination and the drum peeling test was also performed analogous to Comparative Embodiment 1. The following decorated laminates were tested:
  • the strength of the bonding within the laminate is strikingly enhanced (examples 2 and 3) especially by using UV-crosslinked inks as a decoration layer, directly applied to a protective sheet e.g. made from Duraclear 92078: Without the need of any further layer of binding enhancers, the strength of the resulting laminate easily meets the of the ski industry.

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EP05100337A 2004-01-22 2005-01-20 Dekoration eines Mehrschichtenprodukts, insbesondere eines Wintersportgeräts Withdrawn EP1557207A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05100337A EP1557207A1 (de) 2004-01-22 2005-01-20 Dekoration eines Mehrschichtenprodukts, insbesondere eines Wintersportgeräts

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP04001355 2004-01-22
EP04001355A EP1557206A1 (de) 2004-01-22 2004-01-22 Dekoration eines Mehrschichtenprodukts, insbesondere eines Wintersportgeräts
EP04013693A EP1604814A1 (de) 2004-06-10 2004-06-10 Dekoration eines Multischichtgerätes, insbesondere eines (Winter)Sportgerätes
EP04013693 2004-06-10
EP05100337A EP1557207A1 (de) 2004-01-22 2005-01-20 Dekoration eines Mehrschichtenprodukts, insbesondere eines Wintersportgeräts

Publications (1)

Publication Number Publication Date
EP1557207A1 true EP1557207A1 (de) 2005-07-27

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EP05100337A Withdrawn EP1557207A1 (de) 2004-01-22 2005-01-20 Dekoration eines Mehrschichtenprodukts, insbesondere eines Wintersportgeräts

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1719617A1 (de) * 2005-05-03 2006-11-08 Ims Kunststoff Ag Dekoration eines Mehrschichtenprodukt, insbesondere eines Wintersportgeräts
CN110086956A (zh) * 2019-05-21 2019-08-02 温州立可达印业股份有限公司 一种半色调隐藏图像浮图效果的显隐方法
CN110300197A (zh) * 2018-03-22 2019-10-01 苹果公司 具有可调装饰的电子设备

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0722843A1 (de) * 1995-01-16 1996-07-24 Salomon S.A. Verfahren zur Dekoration von Gegenständen durch Sublimation
FR2741011A1 (fr) * 1995-11-13 1997-05-16 Rossignol Sa Procede de decoration d'un support possedant une geometrie de surface presentant des reliefs

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0722843A1 (de) * 1995-01-16 1996-07-24 Salomon S.A. Verfahren zur Dekoration von Gegenständen durch Sublimation
FR2741011A1 (fr) * 1995-11-13 1997-05-16 Rossignol Sa Procede de decoration d'un support possedant une geometrie de surface presentant des reliefs

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1719617A1 (de) * 2005-05-03 2006-11-08 Ims Kunststoff Ag Dekoration eines Mehrschichtenprodukt, insbesondere eines Wintersportgeräts
CN110300197A (zh) * 2018-03-22 2019-10-01 苹果公司 具有可调装饰的电子设备
US11050867B2 (en) 2018-03-22 2021-06-29 Apple Inc. Electronic devices with adjustable decoration
CN110086956A (zh) * 2019-05-21 2019-08-02 温州立可达印业股份有限公司 一种半色调隐藏图像浮图效果的显隐方法

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