EP1554127A1 - Verfahren zur bertragung einer beschichtung auf artikel mit verzogenen flächen - Google Patents

Verfahren zur bertragung einer beschichtung auf artikel mit verzogenen flächen

Info

Publication number
EP1554127A1
EP1554127A1 EP03808755A EP03808755A EP1554127A1 EP 1554127 A1 EP1554127 A1 EP 1554127A1 EP 03808755 A EP03808755 A EP 03808755A EP 03808755 A EP03808755 A EP 03808755A EP 1554127 A1 EP1554127 A1 EP 1554127A1
Authority
EP
European Patent Office
Prior art keywords
coating
articles
temperature
transfer
transfer support
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.)
Granted
Application number
EP03808755A
Other languages
English (en)
French (fr)
Other versions
EP1554127B1 (de
Inventor
Pierre Dumoux
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1554127A1 publication Critical patent/EP1554127A1/de
Application granted granted Critical
Publication of EP1554127B1 publication Critical patent/EP1554127B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B44C1/1712—Decalcomanias applied under heat and pressure, e.g. provided with a heat activable adhesive
    • 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
    • B44C1/10—Applying flat materials, e.g. leaflets, pieces of fabrics

Definitions

  • the present invention relates to a method for transferring a coating, in particular an enamel coating on articles with a left surface.
  • Document FR-A-2 808 723 also discloses an article enameling process consisting first of all of producing the articles in a first mold and then of transferring the articles into a second mold after spraying enamel in the second mold.
  • the decorating process by direct spraying in the mold does not allow a precise decoration to be applied to be applied on left surfaces having complex shapes.
  • the decorative layer To be able to be slipped from the support film onto the article to be decorated, the decorative layer must have an appropriate thickness to constitute a film having sufficient strength during transfer, so that this decorative layer has sufficient flexibility to adapt to a slightly curved surface, but does not have sufficient flexibility to adapt to left surfaces of complex shapes.
  • An object of the invention is to provide a method for applying a coating to articles with a left surface even when the coating has poor adhesion.
  • the process for transferring a coating onto articles with a left surface comprises the steps of applying to the articles a coating carried by a transfer support having a pyrolysis temperature lower than a melting temperature of the coating, the coating itself having a bonding temperature below the pyrolysis temperature of the transfer medium, then subjecting the articles thus coated to the melting temperature of the coating. It is thus possible to produce a coating according to a very thin layer adapting to all the configurations of the surface of the article, the transfer support ensuring the maintenance of the coating on the article and being removed by pyrolysis just before the melting of the coating.
  • the coating to be transferred for example an enamel coating having a melting temperature between about 600 ° C and 1300 ° C, which can also be a single layer of uniform color, is printed by an electrostatic system (enamel toner), inkjet, screen printing, heliography, or by any other means on a water-soluble film having a temperature pyrolysis ture between about 300 ° C and 400 ° C.
  • the support film is precut according to a sheet which is deposited on the upper surface of a tank filled with water. After softening of the transfer sheet, the articles to be decorated are immersed in a bath, which brings the coating and the softened transfer medium into intimate contact with the surface of the articles.
  • the articles are then extracted from the transfer bath and placed directly without rinsing them in a cooking chamber in which they are brought to a coating melting temperature.
  • the coating passes through a bonding temperature which is lower than the pyrolysis temperature of the transfer support (and the melting temperature of the coating) and which is sufficient to allow the holding in place of the coating on the article at the time of the pyrolysis of the transfer support.
  • This bonding temperature corresponds either to the melting or baking of a binder initially contained in the coating or added just before the application of the coating, or to the appearance of forces resulting from heating. of the material forming the coating before it melts. In the case of a binder, it can also pyrolyze during the melting of the coating.
  • the binder can nevertheless maintain a bonding of the coating at least until the melting of the coating begins due to the gradient temperature inside the coating layer, even when the articles are introduced into an oven preheated to the melting temperature of the coating.
  • an extensible support film is pre-printed with a coating which is dried and then the support film is cut according to a mold bottom contour and placed in a mold where it is kept pressed in the bottom of the mold, for example by an electrostatic system or by a vacuum, then the material constituting the articles to be decorated is introduced into the mold and, after demolding, the article obtained is sent directly to a baking oven which simultaneously cooks of the article, the melting of the enamel and the pyrolysis of the transfer medium.
  • the film is not precut but advanced step by step at each molding cycle and the decorated part to be applied to the article is cut from the film when the film is closed. mold.
  • the coating to be transferred is pre-printed by means of an enamel solution on a heat-shrinkable film which is placed on the part to be decorated, for example by putting it first in a tubular form, then the assembly is raised in temperature to a melting temperature of the enamel solution, which first of all causes the shrinkage of the heat-shrinkable film and then its pyrolysis simultaneously with the melting of the enamel solution.
  • the enamel solution can be dried after printing in order to allow easier handling of the transfer medium, the enamel solution being able to be reactivated just before transfer.
  • the transfer medium can also be attached to a handling medium, such as a sheet of paper, to further improve handling before the actual transfer operation.
  • the invention applies to coatings other than the enamel solution, for example to a polymeric coating intended to seal an article made of porous material or a coating intended to modify the surface characteristics ( slip, adhesion, dullness, touch, etc.), the coating to be applied having a melting temperature higher than the pyrolysis temperature of the transfer support and a bonding temperature lower than the pyrolysis temperature of the transfer support.
  • the coating to be transferred is supported by the transfer support until the coating melts, it is therefore possible to produce a coating according to a very thin layer which adapts to precisely, even on shapes with very complex contours.
  • the transfer support part which is not eliminated is determined to keep the coating in place taking into account the nature of the transfer support.
  • an enamel solution initially supported by a water-soluble film having a thickness of 40 ⁇ m you can, after immersion, perform a partial rinsing to reduce the remaining thickness of the film to approximately 5 ⁇ m. The remaining part of the film is removed by pyrolysis during the rise in temperature.
  • the article is produced by introducing the material constituting the article into the mold, the articles can be produced separately and then introduced into the mold which serves 'Only if then to apply the coating on the articles.
EP03808755A 2002-10-15 2003-10-10 Verfahren zur übertragung einer beschichtung auf artikel mit verzogenen flächen Expired - Lifetime EP1554127B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0212780 2002-10-15
FR0212780A FR2845637B1 (fr) 2002-10-15 2002-10-15 Procede de transfert d'un revetement sur des articles a surface gauche
PCT/FR2003/002990 WO2004035325A1 (fr) 2002-10-15 2003-10-10 Procede de transfert d'un revetement sur des articles a surface gauche

Publications (2)

Publication Number Publication Date
EP1554127A1 true EP1554127A1 (de) 2005-07-20
EP1554127B1 EP1554127B1 (de) 2008-12-31

Family

ID=32039732

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03808755A Expired - Lifetime EP1554127B1 (de) 2002-10-15 2003-10-10 Verfahren zur übertragung einer beschichtung auf artikel mit verzogenen flächen

Country Status (7)

Country Link
US (1) US7156941B2 (de)
EP (1) EP1554127B1 (de)
AT (1) ATE419130T1 (de)
AU (1) AU2003301274A1 (de)
DE (1) DE60325625D1 (de)
FR (1) FR2845637B1 (de)
WO (1) WO2004035325A1 (de)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3632365A (en) * 1967-07-13 1972-01-04 Owens Illinois Inc Decorative decal with a pyrolyzable film base
US3655496A (en) * 1969-09-25 1972-04-11 Vitta Corp Tape transfer of sinterable conductive, semiconductive or insulating patterns to electronic component substrates
CA984231A (en) * 1972-11-20 1976-02-24 Keith F. Beal Ceramic decalcomania and method of making
JPS5121914A (ja) * 1974-08-12 1976-02-21 Mikiiku Nakanishi Insatsuhoho
CH608315B (de) * 1974-09-19 Schlaepfer & Co Ag Durch heissiegelung auf einem zu dekorierenden substrat anbringbares stickereielement und verfahren zu dessen herstellung.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004035325A1 *

Also Published As

Publication number Publication date
AU2003301274A1 (en) 2004-05-04
FR2845637A1 (fr) 2004-04-16
US7156941B2 (en) 2007-01-02
EP1554127B1 (de) 2008-12-31
WO2004035325A1 (fr) 2004-04-29
DE60325625D1 (de) 2009-02-12
US20050271822A1 (en) 2005-12-08
FR2845637B1 (fr) 2005-01-07
ATE419130T1 (de) 2009-01-15

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