EP0656231A1 - Process for treatment of aluminium surfaces - Google Patents
Process for treatment of aluminium surfaces Download PDFInfo
- Publication number
- EP0656231A1 EP0656231A1 EP94560001A EP94560001A EP0656231A1 EP 0656231 A1 EP0656231 A1 EP 0656231A1 EP 94560001 A EP94560001 A EP 94560001A EP 94560001 A EP94560001 A EP 94560001A EP 0656231 A1 EP0656231 A1 EP 0656231A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- formation
- carried out
- acrylic
- surface pattern
- treatment
- 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- Withdrawn
Links
- 239000004411 aluminium Substances 0.000 title claims abstract description 10
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims description 27
- 239000002904 solvent Substances 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims abstract description 10
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 7
- 239000000049 pigment Substances 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims abstract description 3
- 125000002348 vinylic group Chemical group 0.000 claims abstract 2
- 238000004040 coloring Methods 0.000 claims description 7
- 239000002023 wood Substances 0.000 claims description 7
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229920002313 fluoropolymer Polymers 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 229920000058 polyacrylate Polymers 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- 239000002966 varnish Substances 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 4
- 230000001464 adherent effect Effects 0.000 claims 1
- 238000005238 degreasing Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 230000001681 protective effect Effects 0.000 claims 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 abstract description 2
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 abstract description 2
- 230000001680 brushing effect Effects 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 239000010410 layer Substances 0.000 description 5
- 238000007743 anodising Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003049 inorganic solvent Substances 0.000 description 1
- 229910001867 inorganic solvent Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44F—SPECIAL DESIGNS OR PICTURES
- B44F9/00—Designs imitating natural patterns
- B44F9/02—Designs imitating natural patterns wood grain effects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
- B05D5/061—Special surface effect
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44F—SPECIAL DESIGNS OR PICTURES
- B44F9/00—Designs imitating natural patterns
- B44F9/04—Designs imitating natural patterns of stone surfaces, e.g. marble
Definitions
- This invention consists of a process for treatment of all kinds of aluminium profiles and sheets for decorating and protecting these, enabling production of finishes of said surfaces which resemble other materials, such as wood or natural stone.
- Patent ES-2004433 refers to a process for double anodizing treatment of an aluminium item.
- the process according to this patent consists of a first stage of cleaning and polishing the surface, a first electrolytic coating, a mechanical phase destroying this first coating, and a further treatment which affects only the surface destroyed.
- This process has the disadvantage of involving a double anodizing process, and of having to destroy the first layer of electrolytic coating with great accuracy, and consequent high costs, in order to avoid damaging the material, and also that this damage means the second coating is unstable, giving unwanted results.
- a surface cannot be treated to make it resemble wood.
- ES-2022021 refers to a process and installation for continuous varnishing and decoration of metal sheets, and to a metal sheet obtained by the aforementioned process.
- This process though not specifically applied to aluminium surfaces, consists of the application of anticorrosive metal deposits and the application of an anticorrosive varnish based on polyester-epoxy resins, and the firing and drying of the item. This process is also incapable of obtaining a surface looking like wood, for example.
- the surface is thus mechanically treated by stripping the colouring agent.
- This stripping can be done by means of stamping a decorative element which removes the colouring substance or applies a different one.
- the aforementioned surface can be brushed.
- the pressure of the brush's bristles on the treated surface, the distance between them, and the relative transversal movement of these can determine different types of finish.
- the combination of the two methods can give rise to a finish similar to that of wood, in which knots can be formed.
- the aforementioned mechanical treatment is not limitative, as the stamping of a different pattern to those initially intended can be achieved by other mechanical means, whether known of at the present time or not.
- the acrylic substance added must preferably act as a filter for ultraviolet radiation in order to avoid the deterioration of the lower layers. Due to its qualities as regards withstanding the action of atmospheric agents a PVDF was chosen, a combination of acrylic and fluorinated polymers, although the use of pure acrylic substances is also foreseen, with which less resistance is required.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Laminated Bodies (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
This consists firstly of cleaning the surface to be treated, particularly aluminium profiles and sheets, with substances such as trichloroethylene, and then drying the item. A layer of acrylic or vinylic primer or wash primer is applied and dried. Then solvents are applied to soften the surface and a mechanical treatment by brushing, stamping or by spraying chemical solvents with pigments is applied. Finally the surface is dried and a varnishing treatment is applied.
Description
- This invention consists of a process for treatment of all kinds of aluminium profiles and sheets for decorating and protecting these, enabling production of finishes of said surfaces which resemble other materials, such as wood or natural stone.
- At the present time, there are electrolytic anodizing techniques for aluminium with which the uniform colouring of the surface treated is obtained. We should here point out the existence of patent ES-547677 which deals with an electrolytic process for the treatment of aluminium surfaces.
- Patent ES-2004433 refers to a process for double anodizing treatment of an aluminium item. The process according to this patent consists of a first stage of cleaning and polishing the surface, a first electrolytic coating, a mechanical phase destroying this first coating, and a further treatment which affects only the surface destroyed. This process has the disadvantage of involving a double anodizing process, and of having to destroy the first layer of electrolytic coating with great accuracy, and consequent high costs, in order to avoid damaging the material, and also that this damage means the second coating is unstable, giving unwanted results. Furthermore, by means of this process a surface cannot be treated to make it resemble wood.
- ES-2022021 refers to a process and installation for continuous varnishing and decoration of metal sheets, and to a metal sheet obtained by the aforementioned process. This process, though not specifically applied to aluminium surfaces, consists of the application of anticorrosive metal deposits and the application of an anticorrosive varnish based on polyester-epoxy resins, and the firing and drying of the item. This process is also incapable of obtaining a surface looking like wood, for example.
- There are numerous processes for treatment of metal surfaces, apart from the aforementioned ones, particularly for colouring and decorating these, but the imitation of surfaces of items such as wood or natural rocks has not been efficiently solved to date.
- The aim of this invention is to obtain a process for treatment of aluminium surfaces so that these can reproduce surfaces looking like wood or other finishes.
- One characteristic of the invention is that the treatment can be carried out on properly treated aluminium surfaces or on surfaces that have undergone an anodizing process.
- The process referred to herein consists substantially of a succession of three stages, in which
- the first of said stages consists of a chemical treatment of the surface.
- the second of the stages refers to a treatment for forming the surface design, and
- the third is a coating of the treated surface.
- The aforementioned stages are now described in detail:
- The surface which is going to be treated is subjected to the action of an organic solvent in order to remove grease or impurities on it. In a preferential realization trichloroethylene was chosen, due to its widespread industrial diffusion, but any other solvent of similar characteristics could be used without varying the aim of the invention, and even inorganic solvents could be used, such as compounds of nitric acid.
- Once the surface is clean and degreased, a vinyl or acrylic primer, or what is commercially known as a wash primer is applied to this, in combination with a colouring agent that withstands the action of ultraviolet rays. This colouring agent is preferentially made up of pigments of ceramic and/or chromophosphates base.
- The drying of the substance applied is generally done at ambient temperature, but this can also be subjected to conditions to boost said drying, such as high temperature, draughts, or both.
- When the surface is dry a thin layer of solvent properly combined with ceramic pigments is projected onto this. An ethyl acetate was chosen due to its particular characteristics, though any other similar one could be used. The greasiness of the solvent will depend on the optimum drying time which is to be obtained. Said solvent acts on the top layer of the surface treated, softening this and forming in said layer an ideal solution for later mechanical treatment.
- The surface is thus mechanically treated by stripping the colouring agent. This stripping can be done by means of stamping a decorative element which removes the colouring substance or applies a different one.
- Alternatively, the aforementioned surface can be brushed. The pressure of the brush's bristles on the treated surface, the distance between them, and the relative transversal movement of these can determine different types of finish.
- The combination of the two methods can give rise to a finish similar to that of wood, in which knots can be formed.
- The aforementioned mechanical treatment is not limitative, as the stamping of a different pattern to those initially intended can be achieved by other mechanical means, whether known of at the present time or not.
- In the state resulting from mechanical treatment the surface can easily be damaged by atmospherical agents and affected by impact. As a result of this the fixing and protection of the surface layer must be carried out, and this is done by means of applying an acrylic coating in liquid form.
- The acrylic substance added must preferably act as a filter for ultraviolet radiation in order to avoid the deterioration of the lower layers. Due to its qualities as regards withstanding the action of atmospheric agents a PVDF was chosen, a combination of acrylic and fluorinated polymers, although the use of pure acrylic substances is also foreseen, with which less resistance is required.
- The use of substances other than those indicated, but with an identical action, must be understood to be covered by this invention.
Claims (9)
1.- A process for the treatment of aluminium profiles and sheets which enables production of finishes of said surfaces likening them to other materials, such as wood or natural stone, characterized by consisting of the following stages.
A first stage consisting of cleaning the surface with a degreasing substance, and the application of an adherent vinylic or acrylic primer, or what is commercially known as wash primer, in combination with a colouring agent that withstands the action of ultraviolet rays, and further consisting of drying the same, either in ambient conditions or by means of the application of draughts, heat or both;
a second stage consisting of projecting onto the dry surface a layer of solvent combined with ceramic pigments and formation of the surface pattern; and
a third, for fixing the surface pattern by applying a protective varnish.
A first stage consisting of cleaning the surface with a degreasing substance, and the application of an adherent vinylic or acrylic primer, or what is commercially known as wash primer, in combination with a colouring agent that withstands the action of ultraviolet rays, and further consisting of drying the same, either in ambient conditions or by means of the application of draughts, heat or both;
a second stage consisting of projecting onto the dry surface a layer of solvent combined with ceramic pigments and formation of the surface pattern; and
a third, for fixing the surface pattern by applying a protective varnish.
2.- A process, according to claim 1, characterized in that the solvent used for the projection onto the surface being treated has a level of greasiness which depends on the drying time required for each case.
3.- A process, according to claim 2, characterized in that the solvent used for projection onto the surface treated is ethyl acetate.
4.- A process, according to claim 1, characterized in that the formation of the surface pattern is carried out by the pressure exerted by a brush.
5.- A process, according to claim 4, characterized in that the bristles of the brush can be moved at will, both statically and dynamically.
6.- A process, according to claim 1, characterized because the formation of the surface pattern is carried out by stamping.
7.- A process, according to claim 1, characterized in that the formation of the surface pattern is carried out by means of applying drops of solvent mixed with pigments.
8.- A process, according to claim 1, characterized in that the fixing of the surface is done by means of providing a mixture of acrylic and fluorinated polymers, for surfaces which require a high degree of resistance.
9.- A process, according to claim 1, characterized in that the fixing of the surface is carried out by means of applying an acrylic substance, for surfaces that do not require a high degree of resistance.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES9302332 | 1993-11-08 | ||
| ES9302332A ES2087817B1 (en) | 1993-11-08 | 1993-11-08 | PROCEDURE TO DECORATE AND PROTECT PROFILE SURFACES AND ALUMINUM ALLOY SHEETS FOR INDOOR AND OUTDOOR BUILDINGS IN GENERAL. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0656231A1 true EP0656231A1 (en) | 1995-06-07 |
Family
ID=8283546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94560001A Withdrawn EP0656231A1 (en) | 1993-11-08 | 1994-11-07 | Process for treatment of aluminium surfaces |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0656231A1 (en) |
| ES (1) | ES2087817B1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996038233A1 (en) * | 1995-06-02 | 1996-12-05 | Vicente Gramaje Cerdan | Process for treating aluminium surfaces |
| EP0795358A3 (en) * | 1996-03-12 | 1998-03-04 | METRA METALLURGICA TRAFILATI ALLUMINIO S.p.A. | Apparatus for providing aluminium and other metal section members with a dummy wood-like colour |
| WO1998008694A1 (en) * | 1996-08-28 | 1998-03-05 | Verniciatura Industriale Veneta S.P.A. | Process for decorating sections made of metal, plastic material or the like, and related apparatus |
| ES2123414A1 (en) * | 1996-03-05 | 1999-01-01 | Newlac Recubrimientos Superfic | Procedure for treating aluminium surfaces |
| ES2138473A1 (en) * | 1995-05-19 | 2000-01-01 | Cerdan Vicente Gramaje | Process and device for covering PVC sections (profiles) for carpentry (joinery), imitating wood and decorative effects |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2138512B1 (en) * | 1996-12-18 | 2000-10-16 | Cerdan Vicente Gramaje | PROCEDURE AND DEVICE FOR DECORATING IMITATING WOOD, APPLICABLE TO CONTINUOUS ALLOY OR METAL STRIPS. |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4946715A (en) * | 1988-07-11 | 1990-08-07 | Avera Ronald T | Method for producing faux finishes on non-porous surfaces |
| FR2670158A1 (en) * | 1990-12-11 | 1992-06-12 | Euro Creation | Process for decorating substrates of any kind or shape |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1478616A (en) * | 1974-09-20 | 1977-07-06 | Conrah Metal Prod Ltd | Surface finishes of metal articles |
| US4317847A (en) * | 1977-04-28 | 1982-03-02 | Nello Batistelli | Process for producing a simulated weathered antique wood appearing finish |
| ES2004433A6 (en) * | 1987-06-29 | 1989-01-01 | Santaflorentina Chavarria Albe | Multistage anodising process of aluminium. |
| DE4120387A1 (en) * | 1991-06-20 | 1992-12-24 | Kabelmetal Ag | METHOD FOR PRODUCING A STRUCTURED SURFACE ON A SEMI-PRODUCT CONSTRUCTING FROM COPPER OR A COOL ALLOY |
-
1993
- 1993-11-08 ES ES9302332A patent/ES2087817B1/en not_active Expired - Lifetime
-
1994
- 1994-11-07 EP EP94560001A patent/EP0656231A1/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4946715A (en) * | 1988-07-11 | 1990-08-07 | Avera Ronald T | Method for producing faux finishes on non-porous surfaces |
| FR2670158A1 (en) * | 1990-12-11 | 1992-06-12 | Euro Creation | Process for decorating substrates of any kind or shape |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2138473A1 (en) * | 1995-05-19 | 2000-01-01 | Cerdan Vicente Gramaje | Process and device for covering PVC sections (profiles) for carpentry (joinery), imitating wood and decorative effects |
| WO1996038233A1 (en) * | 1995-06-02 | 1996-12-05 | Vicente Gramaje Cerdan | Process for treating aluminium surfaces |
| ES2123414A1 (en) * | 1996-03-05 | 1999-01-01 | Newlac Recubrimientos Superfic | Procedure for treating aluminium surfaces |
| EP0795358A3 (en) * | 1996-03-12 | 1998-03-04 | METRA METALLURGICA TRAFILATI ALLUMINIO S.p.A. | Apparatus for providing aluminium and other metal section members with a dummy wood-like colour |
| WO1998008694A1 (en) * | 1996-08-28 | 1998-03-05 | Verniciatura Industriale Veneta S.P.A. | Process for decorating sections made of metal, plastic material or the like, and related apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2087817A1 (en) | 1996-07-16 |
| ES2087817B1 (en) | 1997-03-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE FR GR IT PT |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
| 18W | Application withdrawn |
Withdrawal date: 19960208 |