WO2008073095A1 - Procédés et appareils pour une sérigraphie sur des articles utiles - Google Patents

Procédés et appareils pour une sérigraphie sur des articles utiles Download PDF

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Publication number
WO2008073095A1
WO2008073095A1 PCT/US2006/047708 US2006047708W WO2008073095A1 WO 2008073095 A1 WO2008073095 A1 WO 2008073095A1 US 2006047708 W US2006047708 W US 2006047708W WO 2008073095 A1 WO2008073095 A1 WO 2008073095A1
Authority
WO
WIPO (PCT)
Prior art keywords
image
release agent
useful
useful article
article
Prior art date
Application number
PCT/US2006/047708
Other languages
English (en)
Inventor
Wanson Wu
Original Assignee
Robinson, Michelle, Hsiao C.
Zircontec Corp., Corporation Nevada
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 Robinson, Michelle, Hsiao C., Zircontec Corp., Corporation Nevada filed Critical Robinson, Michelle, Hsiao C.
Publication of WO2008073095A1 publication Critical patent/WO2008073095A1/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
    • B41M1/12—Stencil printing; Silk-screen printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
    • B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
    • B44C1/17—Dry transfer

Definitions

  • Wanson Wu Related Applications This application hereby incorporates by ' reference and claims the priority and filing date of U.S. provisional patent application serial number 60/750,295, Wanson Wu inventor, filed 12/13/2005 and entitled METHOD AND APPARTUS FOR SCREEN PRINTING ON USEFUL ARTICLES.
  • This invention relates to screen printing on products and to advertising methods.
  • This invention relates more particularly to methods for applying a decorative image to a polyvinyl chloride type of substrate on articles such as computer covers and using that image to advertise a product, individual, group or institution.
  • the present invention presents methods for transferring images onto the useful articles, such as laptop covers, with alternative embodiments of the methods selected for different materials of the useful articles to which the image need be applied.
  • One of the methods of the present invention is most suitable for use with image transfer sheeting material made of a Polyvinyl chloride (PVC) plastic sheet.
  • PVC Polyvinyl chloride
  • a module plate comprised of a replica of a useful article to be decorated is first formed.
  • a release agent is first applied to the module and an impression of the useful article design is taken- When the release agent is allowed to cool to about 4OC the design is removed from the module plate.
  • Several layers akin to silk screening are then are applied onto the release agent on the module plate to form a design on the module template.
  • subtractive coloring is used by mixing pigments of primary colors in order to make other colors, using cyan, yellow, magenta, and black inks.
  • a first primary color coating of the image is applied over the release agent and allowed to dry, then a second primary color is applied over the first primary coat in a similar fashion and allowed to dry, the a third primary coat applied over the second primary coat and allowed to dry, providing all three primary subtractive colors of the image.
  • a fifth white coat may then applied over the image to increase color contrast, concentration and brightness of the image.
  • a final heat- resistant clear protective coating may be applied over the white coat. .
  • the image sheet is then affixed to the useful object with a heated adhesive to achieve a sure bond with the useful object.
  • an image transfer sheet is created but without using a module plate.
  • a release agent is applied to mesh sheeting and then layered with in a similar fashion of layering as used in the first embodiment.
  • a spreading machine ink is used in this method with a computer digital image or painted art work projected onto the PVC image transfer sheet using the mirror printing technique, know to those of skill in the art.
  • the image sheet is transferred to a useful object in a vacuum pressure transfer machine chamber to shrink wrap the image sheet onto the article.
  • the image transfer sheet is first wrapped around the object, and pressure and vacuum are then applied. Adhesive is then applied to the image transfer sheet and further pressed onto the useful article.
  • Figure 1 is a schematic, side view of color layering of one embodiment of the present invention.
  • Figure 2 is a schematic, side view of color layering of another embodiment of the present invention.
  • Figure 3 is a photograph of a laptop computer cover decorated by a method of the present invention.
  • Figure 4 is a schematic side view of apparatus of a vacuum pressure low temperature transfer of images.
  • Figure 5 is flow chart diagram of the methods of the present invention.
  • PVC image transfer sheeting material made of a Polyvinyl chloride (PVC) plastic sheet.
  • PET Polyethylene Teraphthalate
  • PVC image transfer sheeting allows the sheet to transfer an image smoothly to curves and angles on an object, such as the cover of a laptop computer.
  • Laptop computer covers are typically made of ABS, Polycarbonate (PC) and an alloy or combination of ABS and PC, they are compatible with use- of PVC image transfer sheeting for the processes of the present invention.
  • transfer printing is used . with a PVC module plate 10 comprised of a replica of a useful article to be decorated.
  • the module plate 10 of the replica is preferably made of a PVC mesh plastic sheet, of about 250 Mesh. Other plastic material having a suitably high melting point might be used as well.
  • the module plate 10 replica is of the shape and size of the useful article.
  • the module plate 10 can be formed by methods that will be appreciated by those of skill in the art, using a exemplary useful article as a mold.
  • the module plate 10 must be used with material such as PVC, it would be too hot to be used in CNC aluminum metal mode or treated wood mode.
  • CNC aluminum has too low a melting point and would warp at too low a temperature.
  • Treated wood is of too low a density and could damage the transformation object, the completed image sheet 24.
  • an ink container and color spread gun is used to enable a colored ink supply to be used to print the image.
  • a release agent 12 is first applied to the module 10.
  • the release agent 12 used should first be diluted if needed to an appropriate viscosity to allow spraying and to prevent the finished design from later sticking to the surface of the module plate 12.
  • the release agent 12 should also be applied evenly over the module plate 10 to prevent the finished design from later sticking to the surface of the module plate 10.
  • the release agent 12 should be allowed to cool to about 4OC before the design is removed from the module plate 10.
  • the design is generated by a digital image according the methods used in screen printing techniques.
  • YMCK is a subtractive color model used in color printing based on mixing pigments of primary colors in order to make other colors, Cyan, Yellow, Magenta, Cyan and a key color, black.
  • the mixture of ideal- CMY colors is subtractive, YMCK works through light absorption, the colors that are seen by a ' viewer are from the part of light spectrum that is not absorbed.
  • magenta plus yellow produces red
  • magenta plus cyan makes blue
  • cyan plus yellow generates green and the combination of cyan, magenta, and yellow form black.
  • a first primary color coating 14 of the image is applied over the release agent, with a minimum at 400Mesh or higher. This is because most color inks currently used cannot penetrate beyond 300-350Mesh and use of a higher mesh is required to prevent an uneven color print. After the first primary color is applied it should be allowed to dry.
  • a second primary color 16 is applied over the first primary coat in a similar fashion and allowed to dry.
  • a third primary coat 18 is applied over the second primary coat 16 and allowed to dry, providing all three primary subtractive colors of the image. Care should be taken to allow the individual coatings to cool between coatings and keep them near room temperature because otherwise the PVC module plate 10 could shrink or expand with high heat, ruining the image with this distortion.
  • a fifth white coat 21 is then applied over the image to increase color contrast, concentration and brightness of the image.
  • the white coat 20 typically uses ink that requires a 300Mesh screen.
  • a final heat resistant clear protective coating 22 is applied over the white coat 21.
  • the clear coating 22 used is determined by the composition of the useful article to which the design will be affixed, ABS, PC, or an ABS/PC alloy for example. If the article is made of an ABC/PC alloy the preferred heat for transferring the image is 75-90C.
  • the protective coating 22 then must be matched to have a higher melting point or be able to withstand the preferred heat for a given material without degrading. Together these layers comprise an image sheet 24.
  • the image sheet 24 is affixed to the useful object with a heated adhesive to achieve a sure bond with the useful object.
  • a heated adhesive for example where the image sheet transfer is designed to be a laptop computer cover 26 having an uneven surface and curves, the image 24 will be securely bonded to that cover, making it resistant to alcohol and other chemicals, as shown in figure 3.
  • the adhesive used should preferably be heated to a high enough temperature to actually bond with the ink itself.
  • an image transfer is achieved without a module plate 10.
  • a release agent 32 is applied to 250Mesh PVC sheeting 30 in a similar fashion of layering as used in the first embodiment.
  • An image transfer sheet 40 will look much like the transfer sheet 24 shown transferred to a laptop computer cover 26 in figure 3.
  • a release agent 32 is first applied, to the PVC sheet 30.
  • the release agent 32 used should first be diluted if needed to an appropriate viscosity to allow spraying and to prevent the finished design from later sticking to the surface of the PVC sheet 30.
  • the release agent 32 should likewise also be applied evenly over the PVC sheet 30 to prevent the finished design from later sticking to the surface of the module plate 10. Again the release agent 32 should be allowed to cool to about 40 0 C before the design is removed from PVC sheet 30.
  • Protective oil is applied when the image is eventually peeled from the PVC.
  • a spreading machine ink is used in this method.
  • a computer digital image or painted art work is projected onto the PVC sheet 30 using the mirror printing technique know to those of skill in the art.
  • the ink used is an oil dye, which has not been used much in these applications in the past, to print images on a PVC cover.
  • a clear oil 34 is applied to the release agent 32, the clear oil must be heat resistant enough to not melt and degrade under the heat used in the process when applying the resulting image to * the useful article, for example the laptop cover.
  • the full color printing spread machine is used to imprint the fully-colored image 35 onto the clear oil layer 34.
  • a white coat 36 is then applied over the image to increase color contrast, concentration and brightness of the image.
  • the white coat 36 typically uses ink that requires a 300Mesh screen.
  • a final heat resistant clear protective coating 38 is applied over the white coat 36.
  • the clear coating 38 used is determined by the composition of the useful article to which the design will be affixed, ABS, PC, or an ABS/PC alloy for example. If the article is made of an ABC/PC alloy the preferred heat for transferring the image is 75-90 0 C.
  • the protective coating 38 then must be matched to have a higher melting point or be able to withstand the preferred heat for a given material without degrading. Together these layers comprise an image sheet 40.
  • the image sheet 40 is affixed to the useful object with a heated adhesive to achieve a sure bond with the useful object.
  • a heated adhesive to achieve a sure bond with the useful object.
  • the adhesive used should preferably be heated to a high enough temperature to actually bond with the ink itself. It is good practice to obtain the clear coating from the same manufacturer as the one providing the PVC 250Mesh sheet to insure chemical compatibility.
  • the image is transferred to a useful object in the second embodiment by a low temperature image transfer method where a temperature below 75-9O 0 C is maintained to prevent the plastic useful article from warping, here by way of example a laptop cover 26 made of ABS, PC, or an ABS/PC alloy. This is why a low temperature release agent is needed.
  • the image sheet 40 is transferred using an adhesive 42 in a vacuum pressure transfer machine 50 to shrink wrap the image sheet onto the article.
  • the adhesive is applied to the image sheet 40 and place in the transfer machine 50.
  • the PVC sheet 40 With the use of vacuum pressure and mild heat in pressure transfer machine, the PVC sheet 40 becomes transferred to the surface of the laptop cover. This method there allows a transfer of the image without the use of damaging heat or pressure on the image sheet 40.
  • the vacuum causes the PVC sheet to wrap around the useful article even where there is an uneven surface or curves in the object. Pressure is also applied together with the vacuum to achieve a secure wrapping of the image sheet 40.
  • the preferred sequence of achieved a good bonding of the two objects are: a.
  • the image transfer sheet 40 is first wrapped around the object, here a laptop computer cover. Pressure and vacuum are then applied.
  • Adhesive is then applied to the image transfer sheet 40 and further pressed onto the useful article.
  • the adhesive is heated to about 90C and care should be taken to maintain this temperature between the adhesive and the useful article during transfer of the image to insure a good bonding. Heating the adhesive or the useful art to temperatures much above this point however can melt the useful article.
  • the plastic used for many useful articles, such as laptop covers, is ABS, PC, or an ABS/PC alloy, have lower melting points that might otherwise be reached. Were this to occur the useful article might warp and be damaged.
  • FIG. 5 A flow chart diagram of the methods of the present invention is shown in figure 5.

Landscapes

  • Decoration By Transfer Pictures (AREA)

Abstract

L'invention concerne des procédés et l'appareil utilisés pour transférer des images sur des articles utiles, tels qu'un capot d'ordinateur portable. Les procédés de l'invention comprennent les opérations consistant à former un moule de l'article sur une feuille de maille ou d'agent anti-adhésif, étendre en couche par sérigraphie d'encre pour colorer le modèle, puis de coller le modèle à l'article utile. Dans un autre mode de réalisation, la feuille de modèle est réalisée sans moule et apposée sur l'article utile par emballage par rétraction de celle-ci sur l'article utile dans une chambre sous vide.
PCT/US2006/047708 2006-12-13 2006-12-13 Procédés et appareils pour une sérigraphie sur des articles utiles WO2008073095A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US75029506P 2006-12-13 2006-12-13
US60/750,295 2006-12-13

Publications (1)

Publication Number Publication Date
WO2008073095A1 true WO2008073095A1 (fr) 2008-06-19

Family

ID=39512000

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/047708 WO2008073095A1 (fr) 2006-12-13 2006-12-13 Procédés et appareils pour une sérigraphie sur des articles utiles

Country Status (1)

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WO (1) WO2008073095A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4482598A (en) * 1981-09-21 1984-11-13 Dai Nippon Insatsu Kabushiki Kaisha Transfer sheets and production of decorative articles therewith
US4936211A (en) * 1988-08-19 1990-06-26 Presstek, Inc. Multicolor offset press with segmental impression cylinder gear
US5255968A (en) * 1990-12-13 1993-10-26 The Vendo Company Replaceable sign face
US5562958A (en) * 1991-10-15 1996-10-08 The Dow Chemical Company Packaging and wrapping film
US6080261A (en) * 1995-08-25 2000-06-27 Popat; Ghanshyam H. Adhesive image transfer technique
US6459513B1 (en) * 1998-05-07 2002-10-01 Foilmark, Inc. Holographic shrink wrap element and method for manufacture thereof
US20030207092A1 (en) * 2002-02-07 2003-11-06 Kim Jae Duck Picture-on-picture decal sheet

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4482598A (en) * 1981-09-21 1984-11-13 Dai Nippon Insatsu Kabushiki Kaisha Transfer sheets and production of decorative articles therewith
US4936211A (en) * 1988-08-19 1990-06-26 Presstek, Inc. Multicolor offset press with segmental impression cylinder gear
US5255968A (en) * 1990-12-13 1993-10-26 The Vendo Company Replaceable sign face
US5562958A (en) * 1991-10-15 1996-10-08 The Dow Chemical Company Packaging and wrapping film
US6080261A (en) * 1995-08-25 2000-06-27 Popat; Ghanshyam H. Adhesive image transfer technique
US6459513B1 (en) * 1998-05-07 2002-10-01 Foilmark, Inc. Holographic shrink wrap element and method for manufacture thereof
US20030207092A1 (en) * 2002-02-07 2003-11-06 Kim Jae Duck Picture-on-picture decal sheet

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