WO2017105355A1 - Procédé de fabrication de panneau décoratif - Google Patents

Procédé de fabrication de panneau décoratif Download PDF

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Publication number
WO2017105355A1
WO2017105355A1 PCT/TR2015/050248 TR2015050248W WO2017105355A1 WO 2017105355 A1 WO2017105355 A1 WO 2017105355A1 TR 2015050248 W TR2015050248 W TR 2015050248W WO 2017105355 A1 WO2017105355 A1 WO 2017105355A1
Authority
WO
WIPO (PCT)
Prior art keywords
panel
transfer paper
wood based
image
lacquered board
Prior art date
Application number
PCT/TR2015/050248
Other languages
English (en)
Inventor
Ilter EREN
Ercan CELIK
Yigit TUNA
Original Assignee
Kastamonu Entegre Agac Sanayi Ve Ticaret Anonim Sirketi
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 Kastamonu Entegre Agac Sanayi Ve Ticaret Anonim Sirketi filed Critical Kastamonu Entegre Agac Sanayi Ve Ticaret Anonim Sirketi
Priority to PCT/TR2015/050248 priority Critical patent/WO2017105355A1/fr
Publication of WO2017105355A1 publication Critical patent/WO2017105355A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
    • B41M5/035—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet by sublimation or volatilisation of pre-printed design, e.g. sublistatic
    • B41M5/0358—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet by sublimation or volatilisation of pre-printed design, e.g. sublistatic characterised by the mechanisms or artifacts to obtain the transfer, e.g. the heating means, the pressure means or the transport means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
    • B41M5/0256—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet the transferable ink pattern being obtained by means of a computer driven printer, e.g. an ink jet or laser printer, or by electrographic means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
    • B41M5/035—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet by sublimation or volatilisation of pre-printed design, e.g. sublistatic

Definitions

  • the present invention relates to a new method of sublimation heat transfer printing on wood based panels.
  • the image on the decorative paper is printed onto wood based panel by sublimation of dyes whereas, the images in prints are produced by a digital inkjet printer.
  • the present finding relates in general to print transfers using sublimation dyes, and in particular to a method of using prints produced by digital inkjet printers. Such prints are applied with a short cycle press apparatus on wood based panels, covered with polyurethane and hot coat lacquer.
  • the "sublimation heat transfer printing” method reaches an extensive use in various sectors, such as textile or industrial sectors where the print is used on various surfaces such as, glass, metallic, ceramics or wood objects.
  • Such method requires a mutual contact between the surface of the material to be printed which is coated with a special coating and the surface of the transfer paper already printed by a digital inkjet printer.
  • Said wood based panel and transfer paper are pressed between two plates of pressure equipment which is heated up to the temperature whereas the effect of sublimation is reached, and the ink penetrates on the surface to be printed.
  • Color video print system is used due to its advantages to achieve advantages of enhancing efficiency, simplifying structure and operation, reducing cost and power consumption. But the print quality is not satisfactorily in comparison with other techniques.
  • Inkjet printer system has limited colors of the inks since each drop of ink is limited to a color.
  • An inkjet print is composed of droplets of ink layered and scattered to simulate continuous tones, therefore the print quality is not consistent.
  • Dye-sublimation printing system has many advantages over inkjet printing. Such as dye- sublimation printing system has a continuous-tone technology, where each dot can be of any desired color. This dyeing system produces true continuous tones appearing much like a genuine photograph and the prints are dry and ready to handle as soon as they exit the printer. The whole printing cycle is extremely clean as there are no liquid inks to clean up. These factors make dye-sublimation printing system is a more reliable technology over inkjet printing with more satisfactorily print qualities.
  • Digital printing is the most common method of printing in industrial applications due to advantages mentioned above.
  • Sublimation dyes can be used in digital printing technology although they are known as sensitive to heat and pressure.
  • digital printing machines like; Epson, Mutoh or Mimaki.
  • Epson, Mutoh or Mimaki The most preferred one used in this invention, is Mimaki for its ease of use and fast and complete dye transferring properties.
  • Dye sublimation printing is a thermal process whereby color dyes are transferred from an ink ribbon into, the surface of a special substrate which is then laminated during the final stage of the process.
  • This is a computer printing system which employs a printing process that uses heat to transfer dye onto materials such as plastic, card, paper or fabric. The dye makes the transition between the solid and gas states without going through a liquid stage.
  • images are firstly printed on sublimation paper and then the printed images are transferred to surfaces under pressure and heat at a proper time range.
  • sublimation dyes are used as coloring agents.
  • Sublimation dyes which are very popular in printing applications, are readily available in the market as inkjet ink, toner for laser printers or as ribbons for the thermal-transfer printing.
  • Some dye-sublimation printers use cyan magenta yellow over-coating colors, which differs from the more recognized cyan magenta yellow and black colors in that the black is eliminated in favor of a clear over-coating.
  • This over-coating is also stored on the ribbon and as a thin overcoating layer, protects the print from discoloration from UV light and the air.
  • US5643387 is related to printing images produced by color video printer on surfaces, mainly ceramic surfaces, which are capable of receiving and retaining dyes those are able to sublime. The application of the process on wood and wood based panels is missing.
  • EP 1650052 application relates to a process on sublimation heat transfer printing on various surfaces by using reduced pressure or vacuum chamber. According to this method the material to be printed and the print paper are placed between two plates of the equipment and one of these plates is enough to be heated in order to enable the sublimation heat transfer printing. Reduced pressure applied in this process renders this method of printing application non- feasible due to enhanced cost manufacturing caused by energy consumption and equipment needed.
  • US 20030192136 application is related to a methodology for forming permanent, abrasion- resistant images in sheet plastics which are imaged utilizing a dying process applied at elevated pressure and temperatures known as "dye-sublimation method". But it lacks of delivering a method of qualified printings on wood surfaces.
  • a new dye sublimation imaging method is applied on wood surface which completely obviate the unwanted results like; adhesion of the dye carrier to the substrate during imaging, distorted or shrunk images, under qualified surfaces or easily degraded images on surface.
  • FIG. 1 Cross section view of wood panel with enhanced gloss. (Lacquered board panel)
  • FIG. 2 Short Cycle Press apparatus for sublimation heat transfer printing
  • FIG.3 View of pre-press steps for sublimation heat transfer printing followed by sublimation heat transfer printing method
  • the principal object of the present invention is to provide an alternative method to transfer an image quickly and completely on hard surfaces such as wood based panels, especially on panels, having enhanced gloss mentioned as lacquered board panel.
  • the present inventor has discovered that prints produced by inkjet printers can be adequately transferred to wood panel surfaces having an appropriate coating to absorb the sublimable dyes therein. A favorable copy is obtained when proper heat and pressure are applied during a proper time period. With this method, maximum and unspoiled transfer of sublimable dye on surfaces is obtained which led to highly qualified board surfaces.
  • the present invention reveals a new method for manufacturing a decorative board panel.
  • the transfer paper (1) wherein the image is applied by using digital printing (2), is placed on the polymer film coated wood panel (6) and pressed together under elevated temperature and pressure conditions so as to allow the sublimation dye to penetrate the polymer layer and the board upper coatings which enables the maximum of transfer and protection of coating layer.
  • a new method of transferring an image is applied with a transfer paper and sublimable dyes onto a dye absorbent surface, wherein said surface is protected by covering with a polymer film which is capable of transferring the sublimable dye to dye absorbent surface.
  • the printed paper was directly applied by means of pressure on panels to be transferred.
  • the images cannot be totally transferred to the panel surface and occasionally the images or colors are dithered, which is an unwanted phenomenon on the production line.
  • the invention comprises of general use of normal prints created with the use of sublimable dyes on sublimation transfer paper (1) by a typical digital inkjet printer (2), such as Mutoh or Mimaki, in order to obtain printed transfer paper (3) as a media ready to be used on the sublimation heat transfer printing process.
  • a typical digital inkjet printer (2) such as Mutoh or Mimaki
  • the additional materials also used in this process are multi-layer UV & moisture cured lacquered board panel (5) and polyethylene polymer film (4), which is used with the aim of covering of lacquered board panel (5).
  • the present invention involves therefore a novel use of polymer film as a semi-permeable membrane which enhances the penetration of sublimable dyes on wood panels and so protecting the gloss characteristics of board surface.
  • Lacquered board panel characteristics can be seen on FIG. 1 consists of multilayers.
  • a layer of melamine decorative paper (17) is set on fiber board (MDF,PB) (18) to obtain melamine based layer which cannot absorb dye.
  • MDF,PB fiber board
  • a polyurethane hot melt polymer layer (16) is applied, subsequently upper side of the panel is coated with acrylic based, base coat lacquer (15) and upon this a top coat lacquer (14) is applied.
  • the thicknesses of these layers are ranging between 30-80 micrometer ( ⁇ ) preferably 50-60 micrometer.
  • the polyurethane and acrylic based layers are known as absorbing surface layers that absorb sublimation dyes.
  • the required press parameters are set in the temperatures ranging between 120 to 220°C preferably 170 to 200°C and most preferably 190 °C at press plate (which is directly applied to the surface.
  • the pressure applied on the surface ranges between 20 to 50 kg/cm 2 , preferably 30 to 40 kg/cm 2 and the time interval of pressure and heat application on surface ranges between 10 - 80 sec. Having set said parameters wood based panel and the sublimation transfer paper are fed into the short-cycle press (11) as seen in FIG. 2 and 3.
  • the transfer paper containing sublimation dye is pressed onto with the four different layers. These layers are top coat layer (14), base coat layer (15), polyurethane based layer (16) and melamine decorative paper layer (17). Additionally a polyethylene layer is applied on the surface of lacquered board panel (5). During the process the penetration is enhanced by the polyethylene film as semi permeable membrane media which enables to produce printings with sharp contour and saturated original colors.
  • This method is comprised of preparation of required transfer paper and wood based panel for the application and hot press operation technique by working principle of short press cycle.
  • the method of the present invention comprises following steps;
  • a transfer paper is printed by using sublimation dyes with an inkjet printer
  • the polymer film is serving as a semi-permeable membrane enhancing the penetration of sublimable dyes while protecting the gloss characteristics of wood based panel surface.
  • Specifically used polyethylene film layer's thickness ranges between 15- 100 ⁇ , preferably 15-50 ⁇ and most preferably 25 ⁇ .
  • the lacquered board panel has a transparent, smooth surface for the completeness of dye transfer on wood based panel.
  • the lacquered board panel surface enables obtaining smooth decorative surfaces by avoiding orange peel like appearance.
  • the lacquered board panel is made of different layers formed by known techniques. Said layers are comprising a wood panel or Medium Density Fiber board (MDF, PB) (18) coated successively with melamine decorative layer (17), polyurethane hot melt layer (16), base coat lacquer layer (15) and top core lacquer layer (14) on top. Said lacquer layers are preferably acrylic based polymeric layers. The underside of the wood panel or MDF, PB panel (18) is preferably coated with melamine decorative paper (17).
  • MDF, PB Medium Density Fiber board
  • a short-cycle press is used during heating a nd pressing step, which is a conventionally used pressure equipment in the wood based panel manufacturing sector.
  • EXAMPLE 1 Process for acquiring polyethylene coated wood based panel
  • a decorative transfer paper is prepared by using sublimation dyes with inkjet printer
  • Lacquered board panel is prepared by UV curing of melamine and polyacrylate coated MDF. 3. Lacquered board panel's top surface is coated with polyethylene polymer film.
  • Short-cycle press equipment's upper plate temperature is set at 190 °C.
  • Lacquered board panel which is obtained at step 2 is put on the bottom press plate.
  • Decorative transfer paper with sublimable dyes on it, prepared at step 1, is put on the lacquered board panel 7.
  • Upper press plate and bottom press plate are pressed together with 30 kg/cm 2 pressure applied on lacquered board panel and hold for 20-25 sec.
  • the polymer film used for coating lacquered board panel's top surface has a thickness of 15-50 ⁇ , preferably 25 ⁇ .
  • EXAMPLE 2 Process for acquiring uncoated wood based panel
  • Example 1 The same procedure of Example 1 except step 3 is applied.
  • the lacquered board panel is not coated with polyethylene polymer film.
  • gloss test is performed by using Gloss meter.
  • Gloss is measured by using 20° geometrical method. If the result is equal or higher than the 70 unit value, 20° geometrical method is used. 70 unit value corresponds to high reflected gloss. Gloss degree of the sample corresponding to reference sample is given on Table 1 and 2. It can be seen that, the gloss of coated panel is higher compared to uncoated panels results. The colors of decorative figures of the coated panel are sharp, consistent and much clearer.
  • panel sample having 100 mm x 100 mm dimensions is prepared, cleaned with acetone and fixed on the table.
  • Two perforators with a distance of 1-2 mm are put on the panel surface and 1 N pressure is applied.
  • the pressure is enhanced up to 4 N. increasing 0.5 N in each level.
  • the pressure is applied on the surface for 2 hours. After releasing the pressure 24 hours waited and observed scratch is measured and evaluated.
  • the coated panel samples are much more resistant to scratch.
  • the most preferred conditions according to tables are, the samples that are formed by using 190 °C, 30 kg/cm 2 pressure applied in 20-25 seconds.
  • This test is intended to be carried out on a part of finished panel for determination of the mechanical performance of panel with regard to resistance to micro scratching.
  • test panel surface is fixed on table.
  • a circular scrub material fixed on a holder impacts on the panel surface with a defined load.
  • Table and holder move to each other with defined frequencies.
  • the panel surface is exposed to the scrub material for predetermined number of rubs.
  • the changes of the panel surface are determined by gloss measurement and visual assessment.
  • the gloss change is calculated for the test surfaces according to formula
  • AR' gloss value difference R : mean gloss va lue at initia l state
  • test measu rements are performed under 30 kg/cm 2 pressu re.
  • the polyethylene layer is not sufficiently ad hered on the decorative paper to affect subli mation transfer.
  • Over this pressu re the polyethylene polymer is stuck on the panel as difficult to remove and some parts of the decorative panel is da maged .
  • Ta ble 1 and 2 a re the resu lts of examples obtained from the samples that a pplied 30 kg/cm 2 pressu re.

Landscapes

  • Ink Jet Recording Methods And Recording Media Thereof (AREA)

Abstract

La présente invention concerne une méthodologie pour former une image par sublimation de haute qualité d'impression sur des surfaces de panneaux à base de bois. Le procédé produit une image durable, nette et précise sur une surface de panneau à base de bois, ce qui améliore la majorité de ses caractéristiques technique et physique, telles que la netteté des contours de dessin, l'authenticité des couleurs et l'uniformité du ton des couleurs utilisées. Afin d'atteindre ces caractéristiques avantageuses, la présente invention concerne un procédé qui permet à l'image sur un papier de transfert, produite par imprimante à jet d'encre numérique par sublimation, d'être appliquée par pression sur un panneau à base de bois revêtu de polyéthylène.
PCT/TR2015/050248 2015-12-15 2015-12-15 Procédé de fabrication de panneau décoratif WO2017105355A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/TR2015/050248 WO2017105355A1 (fr) 2015-12-15 2015-12-15 Procédé de fabrication de panneau décoratif

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/TR2015/050248 WO2017105355A1 (fr) 2015-12-15 2015-12-15 Procédé de fabrication de panneau décoratif

Publications (1)

Publication Number Publication Date
WO2017105355A1 true WO2017105355A1 (fr) 2017-06-22

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109094234A (zh) * 2018-08-26 2018-12-28 苏州爱得拉装饰材料有限公司 一种聚酯纤维板热转印印花的工艺

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2084931A (en) * 1980-10-10 1982-04-21 Heliome Ltd Heat transfer printing
CH685934A5 (de) * 1993-11-24 1995-11-15 Sicpa Holding Sa Sublimationstransferdruckverfahren.
US5643387A (en) 1988-09-06 1997-07-01 Berghauser; Donald C. Instant color sublimation transfers
US20030192136A1 (en) 2001-03-29 2003-10-16 Magee Ted N. Method and apparatus for forming dye sublimation images in solid plastic
EP1650052A1 (fr) 2004-10-19 2006-04-26 Monti Antonio S.p.A. Presse pour imprimer à plat avec une méthode de sublimation et exchange de chaleur

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2084931A (en) * 1980-10-10 1982-04-21 Heliome Ltd Heat transfer printing
US5643387A (en) 1988-09-06 1997-07-01 Berghauser; Donald C. Instant color sublimation transfers
CH685934A5 (de) * 1993-11-24 1995-11-15 Sicpa Holding Sa Sublimationstransferdruckverfahren.
US20030192136A1 (en) 2001-03-29 2003-10-16 Magee Ted N. Method and apparatus for forming dye sublimation images in solid plastic
EP1650052A1 (fr) 2004-10-19 2006-04-26 Monti Antonio S.p.A. Presse pour imprimer à plat avec une méthode de sublimation et exchange de chaleur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109094234A (zh) * 2018-08-26 2018-12-28 苏州爱得拉装饰材料有限公司 一种聚酯纤维板热转印印花的工艺

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