CA2225534A1 - Method for coating and decorating surfaces in general - Google Patents

Method for coating and decorating surfaces in general Download PDF

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Publication number
CA2225534A1
CA2225534A1 CA002225534A CA2225534A CA2225534A1 CA 2225534 A1 CA2225534 A1 CA 2225534A1 CA 002225534 A CA002225534 A CA 002225534A CA 2225534 A CA2225534 A CA 2225534A CA 2225534 A1 CA2225534 A1 CA 2225534A1
Authority
CA
Canada
Prior art keywords
powdered coating
decorated
coating material
powder
resins
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.)
Abandoned
Application number
CA002225534A
Other languages
French (fr)
Inventor
Mariaromano Flaminio
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.)
MIDA Srl
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
Priority claimed from ITVE950031 external-priority patent/IT1282162B1/en
Priority claimed from ITVE950050 external-priority patent/IT1282173B1/en
Application filed by Individual filed Critical Individual
Publication of CA2225534A1 publication Critical patent/CA2225534A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/06Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
    • B05D5/061Special surface effect
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B44DECORATIVE ARTS
    • B44FSPECIAL DESIGNS OR PICTURES
    • B44F9/00Designs imitating natural patterns
    • B44F9/02Designs imitating natural patterns wood grain effects
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B44DECORATIVE ARTS
    • B44FSPECIAL DESIGNS OR PICTURES
    • B44F9/00Designs imitating natural patterns
    • B44F9/04Designs imitating natural patterns of stone surfaces, e.g. marble

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

A method for coating surfaces in general, and decorating them with powders of various colours characterised by: applying to the surface to be decorated, previously treated for this application, a layer of powdered coating material of colour corresponding to the desired background for the decoration to be obtained, heating the surface treated in this manner to a temperature lower than the baking temperature of the powdered coating material, but sufficient to fix it to the surface to be decorated, applying to the surface prepared in this manner at least one powder of colour corresponding to the coloured motif to be reproduced, distributing it in accordance with the desired pattern of this motif, subjecting the surface treated in this manner to final baking for a time and at a temperature sufficient to securely fix said powder to said surface.

Description

CA 0222~34 1998-02-0~

METHOD FOR COATING AND DECORATING SURFACES IN GENERAL
This invention relates to a method for coating surfaces in general and decorating them with powders of various colours.
The surfaces of natural materials, such as wood and marble, have an 5 outer appearance which is very pleasing to the view These natural materials have however numerous drawbacks such as high cost, an increasingly more limited availability due to environmental problems and often poor resistsnce to atmospheric agents.
In addition marble has the added drawbacks of considerable weight, as 10 it can be formed only into slabs of a certain minimum thickness, and with only flat surfaces, unless further costly surface machining is undertaken.
To combine the aesthetic merits of these natural mal:erials with low cost and a large variety of shapes and dimensions, it has already been proposed to decorate metal, plastic, ceramic and other surfaces to imitate 15 these natural materials.
A known method of decoration is photofiliming, in which a powder or liquid coating forming the background colour is applied to the surface to be decorated, followed by the application thereon of a film reproducing the required decoration. This method has various drawbacks, including:
20 - high cost due both to the intrinsic cost of the materials and the cost of adapting a traditional coating plant, ~ -an unsatisfactory result from the aesthetic viewpoint due to the excessive uniformity of the decoration, -CA 0222~34 1998-02-0 - limited resistance to atmospheric agents.
Another known decoration method is to apply a PVC covering to the surface concerned! and in particular to form by traditional methods a PVC film reproducing the desired decorations. in irnitation of wood or marble. and to glue this film to the surface to be decorated.
This method has also proved unsatisfactory in that it also has numerous drawbacks! including:
- an aesthetic result which is not natural - a hi~h final cost of the product obtained!
10 - limited resistance to atmospheric agents.
FR-A- 2 340 1~0 discloses a method of coating a surface comprising:
- applying a first coating powder - partially melting the powder and maintaining the temperature lower than the temperature at whlch a second powder melts completely 15 - applying a second powder - melting the whole of applied powder.
All these drawbacks are overcome by a method for coating and decorating with powders of various colours surfaces in general as described in claim 1.
A preferred embodiment of the present invention is described in greater detail hereinafter with reference to the accompanying drawings! in which Figure 1 is a perspective view of a surface to be subjected to the treatment ~~NDE0 si~

-~a-according to the invention:
Figure 2 shows it after the initial heatin~ stage, and Figure 3 shows it after final baking.
The method of the invention is applicable to any metal. seramic.
5 plastic, wood or glass surface to be decorated, in such a manner as .o assume the typical appearance of a natural surface. such as wood or marble.

A~i,"l~'rr ''~

CA 0222~34 1998-02-0~

The surface 2 is firstly subjected to specific treatment depending on the nature of the surface to be decorated, but which in itself does not form part of the invention.
To the surface 2 treated in this manner there is then electrostatically applied a layer of powdered coating material 4, in particulsr of polyester, epoxy or epoxypolyester resins, of colour corresponding to the desidered background colour for the decoration to be obtained. Polyester-hydroxyalkylamide resins, polyurethane resins, acrylic resins, epoxyacrylic resins, ~crylopolyure~h~ne r~sins or acrylopolyester resins can a!so be 10 applied. After the powdered coating material 4 has been applied to the surface, it is heated to a temperature less than the baking temperature of said coating, but sufficient to cause it to fix to the surface to be decorated Indicatively the heating temperature is about 75-gO~C and can be achieved by providing, in a traditional powder coating line, pairs of catalytic heating panels, 15 heating lamps, ultraviolet lamps, etc., between which the surface to be decorated is passed.
In the case of particular decorations for which one application stage and one heating stage for the coating layer are found to be insufficient, these two stages can be repeated.
After the heating stage, the purpose of which is to fix a layer of powdered coating material 4 to the surface to be decorated, a second powdered coating material 6 of colour corresponding to the coloured motif to be reproduced is applied to the surface prepared in this manner.

CA 0222C.C.34 1998-02-0C.

This second powdered coating material also preferably consists of the aforesaid resins.
The second powdered coating material 6 can be applied either as a suspension of the powder 6 in a slow-drying liquid vehicle, or can be applied 5 in the dry state. In the first case a liquid of slow evaporation or a slow-drying acrylic liquid is preferably used, the powdered coating material 6 being mixed into this liquid to form a suspension The suspension is then spread over the surface to be decorated with automatic or manual applicators which arrange the powdered coating material 6 in the required decorative pattern. In 10 particular in reproducina, the pattern of wood grains, because of the slow drying of the acrylic liquid, the decoration can also be modified by direct intervention of the operator, who can even produce ~he characteristic form of wood knots.
To solve special problems, intermediate treatments other than the 15 application of powders and their heating can be provided.
If the powdered coating material 6 is applied dry, its application can be by various methods.
A first method ccnsists of applying to the surface to be decorated a uniform layer of powder 6 and then removing the excessive portion so as to 20 form the desired graining,. This removal can be achieved either by suction or by a process of coordinated wiping by mechanically or manually operated tools, such as brushes, blades, pads, sponges etc.
In particular, a tool can consist of an autom.atic applicator formed from CA 0222F7F734 1998 - 02 - 0~.

a pair of cylindrical rotary pads with the surface worked according to the notifto be reproduced or rotary brushes sprayed with liquids and used for partially removing the excess c~uantity of powder, previously applied to the piece to be treated, to leave on its surface the particular decoration to be obtained.
A different method of applying the powder 6 is to use a sort of silkscreen stencil reproducing the required decorative pattern.
On termination of this stage, the entire assembly is balced, indicatively at 180~G for 20 minutes.
The result of this treatment is a surface having an outer appearance totally simil~3r to the surfaces of natural materials, but with decidedly bettercharacteristics than those obtainable by traditional methods.
Costing tearing tests, chequering tests and acetic salt-spray tests were carried out on samples of surfaces obtained in this manner and gave positive results. In particular, these latter tests exceeded more than 1000 hours withoutany formation of bubbles or blisters.
From the aforegoing it is apparent that the method of the invention has numerous advantages, and in particular:
- it enables existing coating plants to be used, with only simple modifications,- it achieves an aesthetically satisfying result to the extent of not revealing the artificial nature of the support, - it presents optimum resistance to atmospheric agents, - it is of low cost because of the use of low-cost materials, - it enables surfaces of any geometry and area to be decorated, CA 0222~34 1998-02-0~

- it enables the surfaces of small-thickness and hence low-weight supports to be decorated.
The method of the invention can be used for forming a large number o products, including:
5 -metal section bars for window frames with a wooden or marble outer appearance, -metal plates for houselhold electrical appliances with a wooden or marble outer appearance, - chipboard or MI~F panels for kitchens with a wooden or marble outer 1 0 appearance, - metal urban furniture elements with a wooden or marble outer appearance, - metal sheets and sec,tion bars for use in the automobile, naval and aeronautical sectors.
It should be noted that in addition to the wooden or marble outer 15 appearance, other appearances are possible comprising multiple coloration.

Claims (29)

1. A method for coating surfaces in general, and decorating them with powders of various colour characterised by:
-applying to the surface to be decorated, previously treated for this application, a layer of powdered coating material of colour corresponding to the desired background for the decoration to be obtained, -heating the surface treated in this manner to a temperature lower than the baking temperature of the powdered coating material, but sufficient to fix it tothe surface to be decorated, -applying to the surface prepared in this manner at least one powder of colour corresponding to the coloured motif to be reproduced, distributing it in accordance with the desired pattern of this motif, -subjecting the surface treated in this manner to final baking for a time and at a temperature sufficient to securely fix said powder to said surface.
2. A method as claimed in claim 1, characterised in that before applying the powder of colour corresponding to the coloured motif to be reproduced, a further layer of powdered coating material corresponding to the desired backgroung is applied and the surface treated in this manner is heated, said two stages being able to be repeated several times.
3. A method as claimed in claim 1, characterised in that the surface to be decorated is of metal, metal alloy, wood, glass, ceramic or plastic.
4. A method as claimed in claim 1, characterised by heating the surface to be decorated, covered with the layer of powdered coating material, to a temperature of between 75 and 90°C.
5. A method as claimed in claim 1, characterised by passing the surface to be decorated, covered with the layer of powdered coating material, in front of a heat source provided in a powder coating line.
6. A method as claimed in claim 5, characterised by passing the surface to be decorated in front of an ultraviolet source.
7. A method as claimed in claim 5, characterised by passing the surface to be decorated in front of heating panels.
8 A method as claimed in claim 5, characterised by passing the surface to be decorated in front of heat lamps.
9. A method as claimed in claim 1, characterised in that a suspension of powdered coating material in a slow-drying liquid is applied to the surface already treated with powdered coating material and already subjected to heating.
10. A method as claimed in claim 9, characterised in that the slow-drying liquid is an acrylic compound.
11. A method as claimed in claim 9, characterised by using a suspension of powdered coating material in a slowly evaporating liquid.
12. A method as claimed in claim 1, characterised in that a coating material in the form of dry powder is applied to the surface already treated with powdered coating material and already subjected to heating.
13. A method as claimed in claim 12, characterised by applying to the surface a uniform layer of powdered coating material and then removing a part of this latter, so that the remaining part forms the required decoration.
14. A method as claimed in claim 13, characterised by removing, by suction, part of the powder previously deposited on the surface to be decorated.
15. A method as claimed in claim 13, characterised by removing, by wiping, part of the powder previously deposited on the surface to be decorated.
16. A method as claimed in claim 15, characterised in that the wiping is effected under moist conditions.
17. A method as claimed in claim 15, characterised in that the removal of the powder by wiping is effected with a manually operated tool.
18. A method as claimed in claim 15, characterised in that the removal of the powder by wiping is effected with a mechanically operated tool.
19. A method as claimed in claim 13, characterised by applying the powdered coating material using a silkscreen stencil reproducing the pattern of the desired decorations.
20. A method as claimed in claim 1, characterised by using powdered coating materials in the form of polyester resins.
21. A method as claimed in claim 1, characterised by using powdered coating materials in the form of epoxy resins.
22. A method as claimed in claim 1, characterised by using powdered coating materials in the form of epoxypolyester resins.
23. A method as claimed in claim 1, characterised by using powdered coating materials in the form of polyester-hydroxyalkylamide resins.
24. A method as claimed in claim 1, characterised by using powdered coating materials in the form of polyurethane resins.
25. A method as claimed in claim 1, characterised by using powdered coating materials in the form of acrylic resins.
26. A method as claimed in claim 1, characterised by using powdered coating materials in the form of epoxyacrylic resins.
27. A method as claimed in claim 1, characterised by using powdered coating materials in the form of acrylo-polyurethane resins.
28. A method as claimed in claim 1, characterised by using powdered coating materials in the form of acrylopolyester resins.
29. A method as claimed in claim 1, characterised by subjecting the surface to be treated to final baking at a temperature of 170-190°C for a time of 15-25 minutes.
CA002225534A 1995-08-07 1996-07-24 Method for coating and decorating surfaces in general Abandoned CA2225534A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ITVE95A000031 1995-08-07
ITVE950031 IT1282162B1 (en) 1995-08-07 1995-08-07 Coating method simulates e.g. heavy marble or wood to enhance lightweight structures - using fixed background powder layer and slow drying colour suspension modified by mechanical tooling to simulate grain or whorls and baking to durable finish resisting tearing and salt spray tests
ITVE950050 IT1282173B1 (en) 1995-11-23 1995-11-23 Coating method simulates e.g. heavy marble or wood to enhance lightweight structures - using fixed background powder layer and slow drying colour suspension modified by mechanical tooling to simulate grain or whorls and baking to durable finish resisting tearing and salt spray tests
ITVE95A000050 1995-11-23

Publications (1)

Publication Number Publication Date
CA2225534A1 true CA2225534A1 (en) 1997-02-20

Family

ID=26332571

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002225534A Abandoned CA2225534A1 (en) 1995-08-07 1996-07-24 Method for coating and decorating surfaces in general

Country Status (11)

Country Link
EP (1) EP0843598B1 (en)
AT (1) ATE226853T1 (en)
AU (1) AU709748B2 (en)
BG (1) BG63455B1 (en)
BR (1) BR9609899A (en)
CA (1) CA2225534A1 (en)
DE (1) DE69624574T2 (en)
ES (1) ES2185792T3 (en)
PT (1) PT843598E (en)
RU (1) RU2166381C2 (en)
WO (1) WO1997005965A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2129372B1 (en) * 1997-10-28 2000-01-01 Fernandez Julio Munoz PROCEDURE FOR PAINTING AND / OR DECORATING METAL PROFILES, AND EQUIPMENT FOR THE IMPLEMENTATION OF THE SAME.
GR20000100042A (en) * 2000-02-15 2001-10-31 Woodall Παπαγιαννακης Ε.Π.Ε. Painting of metals and other meterials that can withstand temperatures above 130 degrees celsius with an electrostatic paint powder for the reproduction of natural grain and knots of any wood in a smooth or relief form onto these surfaces
ES2190834B1 (en) * 2000-03-31 2004-09-16 Julio Muñoz Fernandez PROCEDURE FOR DECORATING METAL PROFILES.
IT1314426B1 (en) 2000-08-10 2002-12-13 Tito Trevisan PROCESS OF NOBILITATION OF A MANUFACTURE BY POWDER PAINTING.
IT1314430B1 (en) * 2000-09-15 2002-12-13 Trevisan S P A PROCESS AND EQUIPMENT FOR THE FINISHING OF A MANUFACTURING MACHINE WITH POWDER COATING.
ES2250649T3 (en) * 2002-05-07 2006-04-16 Hig-Tecnic, S.L. PROCEDURE FOR DECORATION OF METAL PARTS THROUGH THE APPLICATION OF POWDER PAINTING.
US20070224352A1 (en) * 2003-10-21 2007-09-27 Stewart Jeffrey W Powder Coating Procedures
AU2004203662B2 (en) * 2003-10-21 2007-03-15 Climate Coating Limited Powder Coating Procedures
US20050132930A1 (en) * 2003-12-23 2005-06-23 Schlegel Grant E. Antique and faux finish powder coatings and powder coating methods
CN101037074B (en) * 2006-03-19 2010-06-16 李兴兵 Method for producing ceramic tiles having natural wood texture
CN102858469A (en) 2010-04-29 2013-01-02 阿克佐诺贝尔国际涂料股份有限公司 Method for applying a powder coating
DE102010036454B4 (en) * 2010-07-16 2012-09-27 Fritz Egger Gmbh & Co. Og A method of making a panel and panel having a decor and a three-dimensional structure made by the method
RU2492000C1 (en) * 2012-02-02 2013-09-10 Алексей Владимирович Крылов Method of coat application onto glass or ceramic surface
CN104203430B (en) 2012-03-28 2017-03-01 阿克佐诺贝尔国际涂料股份有限公司 The method of application powdery paints
RU2530841C1 (en) * 2013-09-19 2014-10-20 Наталья Ивановна Савранская Method of performing artworks

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
US2017576A (en) * 1931-01-23 1935-10-15 Pyroxylin Products Inc Screen stenciling art
FR732293A (en) * 1931-05-06 1932-09-15 Le Marmorin Jyde Soc De Synthe Process for obtaining veined effects on all surfaces imitating marble
US3383442A (en) * 1965-03-18 1968-05-14 Johns Manville Method and apparatus for manufacturing decorative thermoplastic covering material
GB1558464A (en) * 1975-07-29 1980-01-03 Metal Box Co Ltd Method and apparatus for providing flame cured coatings
CA1039126A (en) * 1976-02-05 1978-09-26 Mellapalayam R. Parthasarathy Electrostatic powder deposition on elongated substrates in plural fusible layers
DE2641108C2 (en) 1976-09-13 1978-05-18 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt Accelerator combination for the crosslinking of powder coating binders
LU84688A1 (en) * 1983-03-11 1983-11-17 Eurofloor Sa PROCESS FOR PRODUCING PLASTIC COATINGS FOR FLOORS AND WALLS AND PRODUCTS OBTAINED
FR2576253B1 (en) * 1985-01-23 1988-07-29 Seb Sa PROCESS FOR MAKING A DECORATION ON A POLYTETRAFLUORETHYLENE COATING AND CULINARY UTENSIL THEREOF
KR930010192B1 (en) 1989-08-01 1993-10-15 마쓰다 가부시끼가이샤 Coating method
FR2670158A1 (en) * 1990-12-11 1992-06-12 Euro Creation Process for decorating substrates of any kind or shape
DE4419197A1 (en) * 1993-06-11 1994-12-15 Volkswagen Ag Process for the production of a paint finish with a coloured decoration

Also Published As

Publication number Publication date
EP0843598A1 (en) 1998-05-27
WO1997005965A1 (en) 1997-02-20
PT843598E (en) 2003-03-31
EP0843598B1 (en) 2002-10-30
BG63455B1 (en) 2002-02-28
ATE226853T1 (en) 2002-11-15
BR9609899A (en) 1999-12-21
DE69624574D1 (en) 2002-12-05
RU2166381C2 (en) 2001-05-10
AU709748B2 (en) 1999-09-09
ES2185792T3 (en) 2003-05-01
AU6736796A (en) 1997-03-05
BG102292A (en) 1999-04-30
DE69624574T2 (en) 2003-06-26

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Legal Events

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FZDE Discontinued