GB2294781A - Embossed stainless steel panel having designs thereon and a fabricating method thereof - Google Patents
Embossed stainless steel panel having designs thereon and a fabricating method thereof Download PDFInfo
- Publication number
- GB2294781A GB2294781A GB9521878A GB9521878A GB2294781A GB 2294781 A GB2294781 A GB 2294781A GB 9521878 A GB9521878 A GB 9521878A GB 9521878 A GB9521878 A GB 9521878A GB 2294781 A GB2294781 A GB 2294781A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stainless steel
- steel panel
- bright
- embossed
- embossed stainless
- 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
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
- B44C1/22—Removing surface-material, e.g. by engraving, by etching
- B44C1/227—Removing surface-material, e.g. by engraving, by etching by etching
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/20—Pretreatment of the material to be coated of organic surfaces, e.g. resins
- C23C18/22—Roughening, e.g. by etching
-
- 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
- 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
- B41M1/26—Printing on other surfaces than ordinary paper
- B41M1/28—Printing on other surfaces than ordinary paper on metals
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- ing And Chemical Polishing (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
An embossed stainless steel panel with designs thereon is produced by (a) photomechanically obtaining two silk screens having a portion wherein the photoresist is removed and a hardened portion, (b) applying the first screen have a topographical surface, in which a gold-plated and electrolytically formed a black pattern in the unmasked areas, (c) applying the second screen and forming bright-etched portion in the unmasked areas and then gold plating (11) the bright-etched portion. <IMAGE>
Description
EMBOSSED STAINLESS STEEL PANEL HAVING A COLOURED AND
TOPOGRAPHICAL SURFACE AND A FABRICATING METHOD THEREOF
The present invention relates to an embossed stainless steel panel having a topographical surface, and more particularly to an embossed stainless steel panel having a coloured and topographical surface and fabricating method thereof, wherein a gold-plated layer with a predetermined pattern is formed on a bright-etched portion on the surface of a sheet of steel panel subjected to an embossing process, and a black colour is provided to the other portion to allow two portions to display a harmonious arrangement of the colours. The embossing process serves to provide a panel with planar as well as recessed parts, and may be carried out mechanically by passing a panel between a pair of profiled embossing rollers, or chemically, by an etching process.
Presently, various figures and shapes are displayed in the surface of a sheet of stainless steel panel utilised as a decorative design of elevators by means of a technique such as painting, paint embedding, silk screen and etching. Here, etching is the most widely available process.
The etching is performed in the sequence of FIGS.
la to id. First, a black and shift draft film as shown in FIG. la is put on a silk screen net 1 having net frames 2 consistently coated with a negative photoresist as shown in FIG. ib to be closely attached to each other by a pressure applied thereto. An exposure is executed upon the resultant structure and the draft film is taken away. Then, silk screen net 1 is washed to have a portion 3 without the photoresist layer since it is dissolved due to failing in receiving a light and have a portion 4 with the photoresist thereon hardened by receiving the light.
The silk screen net prepared as above is put on a sheet of stainless steel panel, and an acid-resistant ink is coated on the whole surface. After removing the silk screen net, an area 5 masked with the ink and an area 6 without being masked with the ink are provided on the stainless steel panel as shown in FIG. lc.
Successively, the resultant structure is immersed into ferric-chloride to etch area 6 without involving the ink, which is then subjected to drying, delaminating, washing, neutralizing, etc. Therefore, an etched portion 7 of a matte surface is formed in the stainless steel panel having a glossy mirror surface as shown in FIG. id.
However, when one-dimensional chemical corrosion is employed, it is insufficient to obtain topographical steps in the depth of the panel for expressing a threedimensional effect of a ridgy plane. Furthermore, if foreign materials become attached into the etched portion, the foreign materials are not easily removed and degrade the quality of the design.
On the other hand, a technique of colouring an embossed stainless steel panel is well known in the art, which is also attained by a simple colouring on the embossed surface to provide a simple visual colour, thereby lacking a geometrically solid three-dimensional optical effect.
Accordingly, embodiments of the present invention seek to provide a sheet of embossed stainless steel panel having a topographical surface painted with harmonious colours, in which a gold-plated layer of a predetermined pattern is formed on a bright-etched portion while permitting the other portion to be coloured with a black, and a golden colour is changed to harmonise the colours as required.
AccordIng to a first aspect of the present invention, there is provided an embossed stainless steel panel having a coloured and topographical surface comprising:
a bright-etched portion having a predetermined pattern formed in a surface of said embossed stainless steel panel;
a gold-plated layer on said bright-etched portion; and
a black colour portion on the remaining pattern portion.
According to a second aspect of the present invention, there is provided a method for fabricating an embossed stainless steel panel having a coloured and topographical surface comprising the steps of:
respectively putting draft films having a plurality of patterns on silk screen nets coated with a photoresist, and exposing and washing the resultant structures to obtain the silk screen nets respectively having a portion without the photoresist due to dissolution thereof and a portion with the hardened photoresist;
putting one silk screen net on said embossed stainless steel panel to be masked, and colouring black an unmasked portion or overall surface of said embossed stainless steel panel;
putting the other silk screen net on said stainless steel panel to be masked, bright-etching an unmasked portion, and removing the photoresist;;
putting the other silk screen net on said stainless panel to be masked, gold-plating the unmasked bright etching portion, and removing the photoresist.
For a better understanding of the present invention, and to show how it may be carried into effect, reference will now be made, by way of example, to the accompanying drawings, in which:
FIGS la to id show a conventional etching process, wherein
FIG. la shows a black and white draft film,
FIG. lb shows a silk screen net after performing an exposure and washing,
FIG. lc shows a state of masking a photoresist on the stainless steel panel, and
FIG. ld shows a state of eliminating the masking photoresist after performing the etching; and
FIGS. 2a to 2g show a process of fabricating a stainless steel panel having a coloured and topographical surface according to the present invention, wherein
FIG. 2a shows draft films,
FIG. 2b shows silk screen nets after performing an exposure and washing,
FIG. 2c is a plan view showing an embossed stainless steel panel,
FIG. 2d shows a state of forming the black colour after executing the masking,
FIG. 2e shows a state after performing the bright etching,
FIG. 2f shows a state after plating the bright-etched portion, and
FIG. 2g shows the completely-fabricated stainless steel panel according to the present invention.
A stainless steel panel according to the present invention is formed such that a bright-etched portion with a predetermined pattern is formed on a sheet of embossing-processed stainless steel panel to form a gold-plated layer on the bright-etched portion. Then, the other portion is formed by a black colour portion.
The gold-plated layer 11 is subjected to a retinting or decoloration in an electrolytic solution by a well known method in the art to allow the golden colour which is the inherent colour of the gold to match with brown or green.
By bright etching an embossed portion to have the glossy mirror surface as described above, the bright and transparent golden colour displays the colorised surface effect while fitting with the embossed portion, which is different from the conventional case of merely performing the gold-plating on the embossed surface without carrying out the bright etching.
Furthermore, this surface is well matched with the black colour formed on the embossed portion, thereby providing a remarkable topographical (threedimensional) optical effect.
If the golden colour is processed in the electrolytic solution when required, the golden colour being the inherent colour of the gold goes well with the black colour by being changed into brown or green to obtain a distinct effect of visible illusion.
(Here, the retinting or decoloration is a well known technique in the art, of which detailed description thus will be omitted.)
Referring to FIGS. 2a to 2g, an embodiment of the embossed stainless steel panel according to the present invention will be described in detail.
In FIG. 2a, draft films A and B having a plurality of patterns are respectively put on silk screen nets consistently coated with a photoresist. Then, the resultant structure are exposed, and the films are taken away to wash the silk screen nets. Therefore, silk screen nets A' and B' having a portion 3 with the photoresist layer due to dissolution and a portion 4 with a hardened photoresist layer are obtained as shown in FIG. 2b.
Silk screen nets A' and B' obtained by the above-stated process are utilised in a masking process of a sheet of stainless steel panel to be described below.
First, prepared silk screen net A' is put on an embossing plane 8 of the stainless steel panel to be masked with an acid-resistant ink. Then, as shown in
FIG. 2d, a masked plane 5 and an unmasked plane 6 are formed as a view A'' once silk screen net A' is removed. Successively, unmasked plane 6 is processed with the black colour, and the acid-resistant ink is eliminated to form a black colour surface 9 as a view A A condition required for forming the black colour is that CrO3 of 110-150g/1, H2SO4 of 580-700g/1, and the remaining amount of an electrolytic solution of water are used for processing the objective structure at a temperature of 70-800C for three and a half to five hours to be coloured with the black pigment.
The black colour differs in its shade in accordance with the temperature variation of the electrolytic solution.
The other silk screen net B' having the same pattern is put on stainless steel panel A''' to be masked identically to the foregoing method. Then, as shown in FIG. 2e, silk screen net B' is removed to form masked plane 5 and unmasked plane 6 as a view B''.
Successively, unmasked plane 6 is bright-etched to eliminate the ink, thereby forming a bright-etched portion 10 on the embossing portion as a view B'''.
Alternatively, the bright-etched portion is formed in such a manner that the black colour is formed throughout the stainless steel panel except a portion via the process described with reference to FIG. 2d, the overall surface of the embossed steel panel as shown in FIG. 2c is coloured with the black pigment under the above-mentioned condition, and the masking process is performed on the surface as shown in FIG.
2e, by using silk screen net B' prior to executing the bright etching.
When executing the bright etching, 1-5 nicotinic acid amide and a surfactant are added to an electrolytic solution of 5-10k glycerine, 30-50k phosphoric acid, 35-50t sulphuric acid and 1-5% chromite anhydride CrO3, which is electrolyzed at a temperature of 70-80 C and a current density of 50-70
A/m2. Then, an etched portion becomes glossy (i.e.
mirror-like).
The other silk screen net B' is put on the steel panel B''' having been subjected to the above-described process to be masked, and is removed.
The gold-plating is exerted upon the resultant structure via the typical method to form a gold-plated layer 11 on the bright-etched portion as shown in FIG.
2f.
By eliminating the ink to obtain the completelyfabricated panel according to the present invention as shown in FIG. 2g is obtained.
In the stainless steel panel according to the present invention, the embossed portion is coloured with a black pigment to afford a visual effect different from the conventional stainless steel panel for coating the black colour on a planar surface.
By forming the bright-etched portion having a depth in the embossed portion without being coloured with black, the bright-etched portion becomes glossy.
Also, the gold-plated layer is further formed on the bright-etched portion to have a distinctive characteristic apart from the gold plating on a general material.
As the result, the gold-plated layer displays a harmonious arrangement in colours while presenting a visual effect of a cubic sense (topographical threedimensional optical effect) in accordance with the change of the fabricating process thereof.
In addition, the gold-plated layer may be retinted or decolorised to be tinted with brown or green well matched with the golden colour.
While the present invention has been particularly shown and described with reference to particular embodiment thereof, it will be understood by those skilled in the art that various changes in form and details may be effected therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. An embossed stainless steel panel having a coloured and topographical surface comprising:
a bright-etched portion having a predetermined pattern formed in a surface of said embossed stainless steel panel;
a gold-plated layer on said bright-etched portion; and
a black colour portion on the remaining pattern portion.
2. An embossed stainless steel panel having a coloured and topographical surface as claimed in claim 1, wherein said gold-plated layer is retinted so as to harmonise with brown or green.
3. A method for fabricating an embossed stainless steel panel having a coloured and topographical surface comprising the steps of:
respectively putting draft films having a plurality of patterns on silk screen nets coated with a photoresist, and exposing and washing the resultant structures to obtain the silk screen nets respectively having a portion without the photoresist due to dissolution thereof and a portion with the hardened photoresist;
putting one silk screen net on said embossed stainless steel panel to be masked, and colouring black an unmasked portion or overall surface of said embossed stainless steel panel;
putting the other silk screen net on said stainless steel panel to be masked, bright-etching an unmasked portion, and removing the photoresist;;
putting said other silk screen net on said stainless panel to be masked, gold-plating the unmasked bright-etched portion, and removing the photoresist.
4. A method for fabricating an embossed stainless steel panel having a coloured and topographical surface as claimed in claim 3, wherein the golden colour is retinted in an electrolytic solution via a well known method in the art to be matched with brown or green.
5. A method for fabricating an embossed stainless steel panel having a coloured and topographical surface as claimed in claim 3, wherein said stainless steel panel is electrolyzed in the solution obtained by adding 1-5% nicotinic acid amide and a surfactant to an electrolytic solution of 5-10k glycerine, 30-50k phosphoric acid, 35-50k sulphuric acid and 1-5 chromite anhydride CrO3 at a temperature of 70-80 C and a current density of 50-70 A/m2.
6. An embossed stainless steel panel as claimed in claim 1, substantially as hereinbefore described with reference to or as shown in the accompanying drawings.
7. A method for fabricating an embossed stainless steel panel according to claim 3, substantially as hereinbefore described with reference to or as shown in the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019940027452A KR0125477B1 (en) | 1994-10-26 | 1994-10-26 | Stainless sheet having colorful and cubic surfaces and the method therefor |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| GB9521878D0 GB9521878D0 (en) | 1996-01-03 |
| GB2294781A true GB2294781A (en) | 1996-05-08 |
| GB2294781A8 GB2294781A8 (en) | 1996-05-20 |
| GB2294781B GB2294781B (en) | 1997-07-23 |
Family
ID=19395945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9521878A Expired - Fee Related GB2294781B (en) | 1994-10-26 | 1995-10-25 | A method of fabricating an embossed stainless steel panel having a colored surface displaying a three-dimensional optical effect |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2771487B2 (en) |
| KR (1) | KR0125477B1 (en) |
| CN (1) | CN1051502C (en) |
| GB (1) | GB2294781B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2756511A1 (en) * | 1996-12-02 | 1998-06-05 | Gravimag | Decorative plaque |
| CN103978826A (en) * | 2014-05-23 | 2014-08-13 | 杜志斌 | Bicolor stainless steel embossing plate and manufacturing method thereof |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005067A (en) * | 2013-02-27 | 2014-08-27 | 景祥凯工业股份有限公司 | Tool and manufacturing method thereof |
| CN104018212B (en) * | 2014-06-23 | 2016-06-29 | 上海英汇科技发展有限公司 | A kind of rustless steel door sill decorative plate etch process of environment-friendly type |
| CN106626932A (en) * | 2016-12-24 | 2017-05-10 | 福建省德化县新顺盛陶瓷工艺有限公司 | Once shaped electroplating stained paper, preparation method thereof and ceramic decoration method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4154064A (en) * | 1974-04-08 | 1979-05-15 | Droege Lee J | Pendant having surface including metal and photoresist |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2578167B2 (en) * | 1988-06-01 | 1997-02-05 | 華陽技研工業株式会社 | Decorative plate and its manufacturing method |
| JP3153313B2 (en) * | 1992-01-28 | 2001-04-09 | 株式会社エム・ケイ | Black chrome plating method |
-
1994
- 1994-10-26 KR KR1019940027452A patent/KR0125477B1/en not_active IP Right Cessation
-
1995
- 1995-10-24 CN CN95115966A patent/CN1051502C/en not_active Expired - Fee Related
- 1995-10-25 GB GB9521878A patent/GB2294781B/en not_active Expired - Fee Related
- 1995-10-25 JP JP7277646A patent/JP2771487B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4154064A (en) * | 1974-04-08 | 1979-05-15 | Droege Lee J | Pendant having surface including metal and photoresist |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2756511A1 (en) * | 1996-12-02 | 1998-06-05 | Gravimag | Decorative plaque |
| CN103978826A (en) * | 2014-05-23 | 2014-08-13 | 杜志斌 | Bicolor stainless steel embossing plate and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08302483A (en) | 1996-11-19 |
| GB9521878D0 (en) | 1996-01-03 |
| CN1126148A (en) | 1996-07-10 |
| CN1051502C (en) | 2000-04-19 |
| KR960014398A (en) | 1996-05-22 |
| GB2294781B (en) | 1997-07-23 |
| KR0125477B1 (en) | 1997-12-26 |
| GB2294781A8 (en) | 1996-05-20 |
| JP2771487B2 (en) | 1998-07-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20121025 |