CA2230942A1 - Method for forming a pattern on a surface of an aluminum extrusion - Google Patents

Method for forming a pattern on a surface of an aluminum extrusion Download PDF

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Publication number
CA2230942A1
CA2230942A1 CA002230942A CA2230942A CA2230942A1 CA 2230942 A1 CA2230942 A1 CA 2230942A1 CA 002230942 A CA002230942 A CA 002230942A CA 2230942 A CA2230942 A CA 2230942A CA 2230942 A1 CA2230942 A1 CA 2230942A1
Authority
CA
Canada
Prior art keywords
aluminum extrusion
forming
pattern
coating
base color
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
CA002230942A
Other languages
French (fr)
Inventor
Tsung-Tai Lu
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
Priority claimed from TW086103395A external-priority patent/TW365584B/en
Application filed by Individual filed Critical Individual
Priority to CA002230942A priority Critical patent/CA2230942A1/en
Priority to AU58433/98A priority patent/AU709255B2/en
Publication of CA2230942A1 publication Critical patent/CA2230942A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B44DECORATIVE ARTS
    • B44DPAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
    • B44D5/00Surface treatment to obtain special artistic surface effects or finishes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00Inking and printing with a printer's forme
    • B41M1/26Printing on other surfaces than ordinary paper
    • B41M1/28Printing on other surfaces than ordinary paper on metals
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/0045After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using protective coatings or film forming compositions cured by mechanical wave energy, e.g. ultrasonics, cured by electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams, or cured by magnetic or electric fields, e.g. electric discharge, plasma
    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02Anodisation
    • C25D11/04Anodisation of aluminium or alloys based thereon
    • C25D11/18After-treatment, e.g. pore-sealing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2202/00Metallic substrate
    • B05D2202/20Metallic substrate based on light metals
    • B05D2202/25Metallic substrate based on light metals based on Al
    • 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50Multilayers
    • B05D7/52Two layers
    • B05D7/53Base coat plus clear coat type
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/50Multilayers
    • B05D7/56Three layers or more
    • B05D7/57Three layers or more the last layer being a clear coat

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

A method for forming a pattern on the surface of an aluminum extrusion comprises the steps of cleaning the surface of the aluminum extrusion; forming a film on the cleaned surface of the aluminum extrusion;
providing a base color coating on the surface of the aluminum extrusion; baking the aluminum extrusion at a temperature of 150-300 °C; washing the surface of the aluminum extrusion with an organic solvent; printing the pattern onto the base color coating by means of a power-driven metal roller which has the pattern formed on an external face thereof and which has ink provided thereon, and a polyurethane roller which contacts rotatably the external face of the metal roller and the base color coating of the aluminum extrusion for transfer printing the pattern from the metal roller to the base color coating of the aluminum extrusion; and forming a transparent protective film on the printed surface of the aluminum extrusion.

Description

METHOD FOR FORMING A PATTERN ON
A SURFACE OF AN ALUMINUM EXTRUSION
BACKGROUND OF THE INVENTION
1. Field of the Invention This invention relates to a method for forming a pattern on a surface of an aluminum extrusion.
2. Description of the Related Art Aluminum extrusions are widely used in the architecture industry. However, since the aluminum extrusion has a monochromatic surface, the appearance thereof is dull and lacks aesthetic appeal.
SUMMARY OF THE INVENTION
It is therefore a main object of the present invention to provide a method for forming a pattern on the surface of an aluminum extrusion in order to improve the appearance thereof.
According to the present invention, the method for forming a pattern on the surface of an aluminum extrusion comprises the steps of:
cleaning the surface of the aluminum extrusion by degreasing, caustic washing and pickling the aluminum extrusion;
forming a film on the cleaned surface of the aluminum extrusion;
providing a base color coating on the surface of the aluminum extrusion;

baking the aluminum extrusion at a temperature of 150-300 °C in order to crosslink and harden the base color coating;
washing the base color coating with an organic solvent in order to remove oil stains and dust;
printing the pattern onto base color coating of the aluminum extrusion by means of a power-driven metal roller which has the pattern formed on an external face thereof and which has ink provided thereon, and a polyurethane roller which contacts rotatably the external face of the metal roller and the base color coating of the aluminum extrusion for transfer printing the pattern from the metal roller to the base color coating of the aluminum extrusion; and forming a transparent protective film on the printed surface of the aluminum extrusion.
BRIEF DESCRIPTION OF THE DRAWINGS
Other features and advantages of this invention will become apparent in the following detailed description of the preferred embodiments of this invention with reference to the accompanying drawings, in which:
Figure 1 is a flow diagram showing the method for forming a pattern on a surface of an aluminum extrusion according to the present invention; and Figure 2 is a schematic view illustrating the equipment for printing the pattern on the surface of an aluminum extrusion according to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to Figure 1, a preferred embodiment of the method for forming a pattern on a surface of an aluminum extrusion in accordance with the present invention is shown to comprise the steps of cleaning, film-forming, providing a base color coating, baking, washing, pattern-printing, and forming a protective film. In this embodiment, the pattern is in the form wood grains. The steps of the method for forming the pattern on the surface of the aluminum extrusion may be carried out right after the steps of the method for forming the aluminum extrusion in order to form and process the aluminum extrusion continuously. In addition; the method of the present invention can be performed a continuously on a conveyor device.
The cleaning step includes the step of dipping sequentially the aluminum extrusion into washing tanks which contain a surface-active agent, 1-500 of sodium hydroxide and 15-30% of nitric acid, respectively, in order to remove grease from the surface of the aluminum extrusion.
The cleaned aluminum extrusion is electrolyzed in a sulfuric acid solution in order to form an oxide film.
The sulfuric acid solution contains sulfuric acid having a concentration of 50-250 g/1, an aluminum ion concentration of 2-50 g/1, an electrolysis temperature of 10-30 °C, an electrolysis voltage of 5-25 volts, and an electric current density of 50-300 A/m2. The function of the oxide film is to provide a weather-proof effect to the aluminum extrusion.
A base color coating is provided on the film at the surface of the aluminum extrusion by electrodepositing an acrylic electrodeposition coating of a base color on the surface of the aluminum extrusion at a temperature of 0-50 °C. The concentration of the electrodeposition coating is 1-25 wt%. The base color coating can improve the appearance of the aluminum extrusion and protect the aluminum extrusion.
The aluminum extrusion is then baked at a temperature of 150-300 °C in order to crosslink and harden the base color coating.
Next, the base color coating of the aluminum extrusion is washed by an organic solvent in order to remove oil stains and dust therefrom.
After the base color coating has been washed with the organic solvent, a predetermined pattern, such as wood grains, is printed onto base color coating of the aluminum extrusion by means of the printing device, as best illustrated in Figure 2. The printing device has a power-driven metal roller 1 which has the wood grain pattern formed on an external face 11 thereof and which ' 98. 03. 10 (k) 16:42 SAINT ISLAN~A 02230942 i99s'-'0f-o4 886227316377 P.

__5__ has ink 2 (or hn acrylic coating) provided thereon by means of an ink application roller 5. A scraper 4 is provided adjacent to the metal roller 1 in order to remove excess ink from the external face ,11 of the metal roller 1. The printing device further ha$ a polyurethane roller 3 which contacts rotatably the extex'nal face 11 of the metal roller 1 and base color coating of the aluminum extrusion for transfer printing the wood grain pattern ~x-om the metal roller 1 onto the base color coating of the aluminum extrusion_ Finally, a transparent protective film is formed on the printed surface: of the aluminum extrusion by applying an ultraviolet coating onto the printed surface of the aluminum extrusion and radiating ultraviolet light onto the ultraviolet coating in order to harden the ultraviolet coating.
In addition, the method for forming a pattern on the surface of the aluminum extrusion further comp~c-ises the step of washing the aluminum extrusion with water zp before Bach of the steps of forming the film on the cleaned surface of the aluminum extrusion, forming the base color coating on the surface of the aluminum extrusion, and baking aluminum extrusion in order to clean positively the :surface of the aluminum extrusion_ 2g Alternatively, the base color coating may be px-ovided onto the surface of the a~.uminum extrusion by electroplating the aluminum extrusion in a mixture solution of 2-30 g/1 stannous sulfate, 5-90 g/1 nickel sulfate and 2-30 g/1 sulfuric acid by means of an alternating current of 5-30 volts.
Furthermore, a synthetic film may be formed on the cleaned surface of the aluminum extrusion instead of the oxide film by dipping the aluminum extrusion in a chromate solution, and the base color coating may be provided onto the surface of the aluminum extrusion by powder-coating an epoxy resin or polyethylene coating on the surface of the aluminum extrusion.
Moreover, the transparent protective film may be formed on the printed surface of the aluminum extrusion by applying an acrylic coating on the surface of the aluminum extrusion, and baking the acrylic coating.
Furthermore, in the step of forming the pattern on the surface of the aluminum extrusion, the printing device may comprise a plurality of metal rollers and polyurethane rollers for printing a plurality of sets of patterns onto the surface of the aluminum extrusion.
The metal and polyurethane rollers may be disposed around the entire surface of the aluminum extrusion in order to improve the printing efficiency.
While this invention thus explained, it is apparent that numerous modifications and variations can be made without departing from the scope and spirit of this invention. It is intended that this invention be limited only as indicated in the appended claims.

Claims (13)

1. A method for forming a pattern on a surface of an aluminum extrusion, said method comprising the steps of:
cleaning said surface of said aluminum extrusion by degreasing, caustic washing and pickling said aluminum extrusion;
forming a film on said cleaned surface of said aluminum extrusion;
providing a base color coating on said surface of said aluminum extrusion;
baking said aluminum extrusion at a temperature of 150-300 °C in order to crosslink and harden said base color coating;
washing said base color coating on said surface of said aluminum extrusion with an organic solvent in order to remove oil stains and dust;
printing said pattern onto said base color coating on said surface of said aluminum extrusion by means of a power-driven metal roller which has said pattern formed on an external face thereof and which has ink provided thereon, and a polyurethane roller which contacts rotatably said external face of said metal roller and said base color coating on said surface of said aluminum extrusion for transfer printing said pattern from said metal roller to said base color coating of said aluminum extrusion; and forming a transparent protective film on said printed surface of said aluminum extrusion.
2. The method for forming a pattern on a surface of an aluminum extrusion as claimed in Claim 1, wherein said pattern is in the form of wood grains.
3. The method for forming a pattern on a surface of an aluminum extrusion as claimed in Claim 1, wherein the steps of said method are performed continuously on a conveyor device.
4. The method for forming a pattern on a surface of an aluminum extrusion as claimed in Claim 1, wherein the step of providing said base color coating on said surface of said aluminum extrusion comprises electrodepositing an electrodeposition coating of a base color on said surface of said aluminum extrusion at a temperature of 0-50 °C, the concentration of said electrodeposition coating being 1-25 wt%.
5. The method for forming a pattern on a surface of an aluminum extrusion as claimed in Claim 1, wherein the step of providing said base color coating on said surface of said aluminum extrusion comprises electroplating said aluminum extrusion in a mixture solution of 2-30 g/l stannous sulfate, 5-90 g/l nickel sulfate and 2-30 g/l sulfuric acid by means of an alternating current of 5-30 volts.
6. The method for forming a pattern on a surface of an aluminum extrusion as claimed in Claim 1, wherein the step of forming a film on said cleaned surface of said aluminum extrusion includes the step of electrolyzing said aluminum extrusion in a sulfuric acid solution in order to form an oxide film on said surface of said aluminum extrusion, said sulfuric acid solution containing sulfuric acid having a concentration of 50-250 g/l, an aluminum ion concentration of 2-50 g/l, an electrolysis temperature of 10-30 °C, an electrolysis voltage of 5-25 volts, and an electric current density of 50-300 A/m2.
7. The method for forming a pattern on a surface of an aluminum extrusion as claimed in Claim 1, wherein the step of forming a film on said cleaned surface of said aluminum extrusion includes the step of dipping said aluminum extrusion in a chromate solution in order to form a synthetic film.
8. The method for forming a pattern on a surface of an aluminum extrusion as claimed in Claim 7, wherein the step of providing a base color coating on said surface of said aluminum extrusion includes the step of powder-coating an epoxy resin coating on said surface of said aluminum extrusion.
9. The method for forming a pattern on a surface of an aluminum extrusion as claimed in Claim 7, wherein the step of providing a base color coating on said surface of said aluminum extrusion includes the step of powder-coating a polyethylene coating on said surface of said aluminum extrusion.
10. The method for forming a pattern on a surface of an aluminum extrusion as claimed in Claim 1, wherein said ink (2) in the step of printing said pattern onto said surface of said aluminum extrusion includes an acrylic coating.
11. The method for forming a pattern on a surface of an aluminum extrusion as claimed in Claim 1, further comprising the step of washing said aluminum extrusion with water before each of the steps of forming said film on said cleaned surface of said aluminum extrusion, forming said base color coating on said surface of said aluminum extrusion, and baking said aluminum extrusion.
12. The method for forming a pattern on a surface of an aluminum extrusion as claimed in Claim 1, wherein the step of forming said transparent protective film on said surface of said aluminum extrusion includes the step of applying an ultraviolet coating onto said printed surface of said aluminum extrusion, and radiating ultraviolet light onto said ultraviolet coating in order to harden said ultraviolet coating.
13. The method for forming a pattern on a surface of an aluminum extrusion as claimed in Claim 1, wherein the step of forming said transparent protective film on said surface of said aluminum extrusion includes the steps of applying an acrylic coating on said surface of said aluminum extrusion, and baking said acrylic coating.
CA002230942A 1997-03-18 1998-03-04 Method for forming a pattern on a surface of an aluminum extrusion Abandoned CA2230942A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002230942A CA2230942A1 (en) 1997-03-18 1998-03-04 Method for forming a pattern on a surface of an aluminum extrusion
AU58433/98A AU709255B2 (en) 1997-03-18 1998-03-16 Method for forming a pattern on a surface of an aluminum extrusion

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW086103395A TW365584B (en) 1997-03-18 1997-03-18 Method of forming surface patterns of squeezed aluminum
CA002230942A CA2230942A1 (en) 1997-03-18 1998-03-04 Method for forming a pattern on a surface of an aluminum extrusion

Publications (1)

Publication Number Publication Date
CA2230942A1 true CA2230942A1 (en) 1999-09-04

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Application Number Title Priority Date Filing Date
CA002230942A Abandoned CA2230942A1 (en) 1997-03-18 1998-03-04 Method for forming a pattern on a surface of an aluminum extrusion

Country Status (2)

Country Link
AU (1) AU709255B2 (en)
CA (1) CA2230942A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1810757A1 (en) * 2006-01-23 2007-07-25 Kansai Paint Co., Ltd. Method of forming multi-layered patterned coating film

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105730119A (en) * 2016-05-05 2016-07-06 谢汝木 Transfer-printing metal plate having three-dimensional textures and manufacture method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1810757A1 (en) * 2006-01-23 2007-07-25 Kansai Paint Co., Ltd. Method of forming multi-layered patterned coating film
US8071170B2 (en) 2006-01-23 2011-12-06 Kansai Paint Co., Ltd. Method of forming multi-layered patterned coating film

Also Published As

Publication number Publication date
AU5843398A (en) 1998-09-24
AU709255B2 (en) 1999-08-26

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Legal Events

Date Code Title Description
EEER Examination request
FZDE Discontinued