EP2143568A1 - A process for cold-painting laser engravings applied on a slab cladding element - Google Patents
A process for cold-painting laser engravings applied on a slab cladding element Download PDFInfo
- Publication number
- EP2143568A1 EP2143568A1 EP08425473A EP08425473A EP2143568A1 EP 2143568 A1 EP2143568 A1 EP 2143568A1 EP 08425473 A EP08425473 A EP 08425473A EP 08425473 A EP08425473 A EP 08425473A EP 2143568 A1 EP2143568 A1 EP 2143568A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- view surface
- substance
- decoration
- cold
- slab
- 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.)
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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
- B44C1/228—Removing surface-material, e.g. by engraving, by etching by laser radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
- B44C3/10—Producing and filling perforations, e.g. tarsia plates
Definitions
- the invention relates to a process for cold-painting laser engravings applied on a slab cladding element.
- cladding element tiles and ceramic manufactures in general are intended, including cotto, marble, granite, glass, wood and other materials of any nature for cladding walls or floors.
- the process is therefore applicable to the ceramic industry, the wood industry, mills and other industries working on cladding materials.
- Present techniques for producing decorated tiles include, in one case, realisation of the decoration during the graphic designing of the in-view surface of the tile, and in another case, realising the decoration downstream of the production process.
- tile production is serial, and consequently cannot include further modifications, or customisations requested by the consumer.
- the production of tiles can be either in series, a situation that occurs when the preselected decoration is for example the trade mark of the producer, or can be specialised, which is when the consumer requests, for example, a batch of tiles with customised decorations; but it can also be a single piece exhibiting an original decoration.
- the most widely-used processes used in the ceramic field for removal of material for decorative purposes include use of a laser for engraving the decoration on the in-view surface of the tile.
- One laser decorating process includes a stage of realisation a computerised graphic of the decoration, with a computer reading graphic data and transforming it during a work cycle, and realisation of the decoration via laser incision.
- production is normally performed by intermediary second- or third-firing producers.
- second- or third-firing producers refers to the fact that the tiles are subjected to further heating in special kilns.
- the decorative painting is done before, using a localised depositing on the in-view surface of a colouring substance, and then by subsequently heating the tile in special kilns in order to fix the paint on the decoration.
- the in-view surface can exhibit decorations or reliefs or rough engraving done using sanding techniques.
- the heating of the in-view surface of the tile causes a change in the original colour of the tile coming from the producer and the final colour of the tile coming from the second- or third-firing companies.
- the contrast between the in-view surface and the engraving exists in relation to the fact that the decoration exhibits a chromatic tone which is different with respect to the original colour of the slab element.
- the operating temperatures of a laser are such as to fuse the in-view surface and the recesses of the decoration are substantially burned and thus are of a darker colour which is in contrast with respect to the original colour of the in-view surface.
- the aim of the present process is to realise a process for cold-painting laser engraving applied on slab cladding elements.
- a further aim of the present process is to obtain a colouring of the decoration without changing the chromatic tones of the in-view surface.
- a further aim of the present process is to realise decorative colouring having monochromatic or multi-chromatic tones.
- 1 denotes a slab cladding element for walls or floors.
- the cladding element can be of any polygonal or curved shaped, can be regular or irregular and can be constituted by any material such as for example ceramics, cotto, marble, granite, glass and wood.
- the cladding element 1 includes an in-view surface 1a opposite a laying surface which is in contact with the wall or floor to be clad.
- the process for cold-painting laser engravings applied on slab elements comprises a first stage of depositing an insulating substance 2 on the in-view surface.
- This depositing stage which is obtained in a chamber using a spray gun with a plurality of nozzles 6 facing the in-view surface 1a and illustrated in figure 1 , generates an insulating film 10 on the in-view surface 1a which film 10 has a substantially constant thickness along the whole in-view surface 1a.
- the decoration 3 is obtained by a laser pointer 4, as illustrated in figure 2 .
- the laser pointer 4 creates a plurality of engravings forming the decoration 3.
- the operating temperatures of the laser pointer 4 fuse the layer of insulating film 10 previously formed thereon, and at the same time the laser pointer 4 penetrates the in-view surface 1a to a depth established on the basis of design needs or decorative requirements.
- the stage following the realisation of the decoration 3 is that of laying a colouring substance 5 on the in-view surface.
- This colouring substance 5 is preferably defined by a cold resin acting on the in-view surface 1a without any need for application of heat.
- the colouring substance 5 will be spread in order to obtain a layer of film 11 and thus a more uniform distribution on the in-view surface 1a will be obtained.
- the distribution of the colouring substance 5 can be done manually by use of at least a spatula 7 or industrially by motorised means such as for example brushes or screens.
- the final stage of the process is thus performed, i.e. the removal of the colouring substance 5 from the in-view surface 1a.
- Figure 4 shows the slab element 1 with the coloured decoration 3.
- the above-described process is to be considered valid in both a case in which the decoration exhibits a single chromatic tone and in a case where the decoration includes more than one chromatic hue.
- the process will include the repetition of the sequence of stages as described above for each part 3a, 3b making up the decoration.
Abstract
Description
- The invention relates to a process for cold-painting laser engravings applied on a slab cladding element.
- By the term cladding element, tiles and ceramic manufactures in general are intended, including cotto, marble, granite, glass, wood and other materials of any nature for cladding walls or floors.
- The process is therefore applicable to the ceramic industry, the wood industry, mills and other industries working on cladding materials.
- In the ceramics sector, producing tiles or any other cladding element with decorations on the in-view surface is a common and consolidated activity.
- Present techniques for producing decorated tiles include, in one case, realisation of the decoration during the graphic designing of the in-view surface of the tile, and in another case, realising the decoration downstream of the production process.
- In the first case the tile production is serial, and consequently cannot include further modifications, or customisations requested by the consumer.
- In the second case the production of tiles can be either in series, a situation that occurs when the preselected decoration is for example the trade mark of the producer, or can be specialised, which is when the consumer requests, for example, a batch of tiles with customised decorations; but it can also be a single piece exhibiting an original decoration.
- From among the various production processes in the second case, for economic reasons realisation of a decoration on a tile by removal of material is preferred.
- The most widely-used processes used in the ceramic field for removal of material for decorative purposes include use of a laser for engraving the decoration on the in-view surface of the tile.
- This preference is due to the high operative flexibility obtained with laser engravure.
- One laser decorating process includes a stage of realisation a computerised graphic of the decoration, with a computer reading graphic data and transforming it during a work cycle, and realisation of the decoration via laser incision.
- For series-produced laser-engraved tiles with coloured decorations, production is normally performed by intermediary second- or third-firing producers.
- The expression "second- or third-firing producers" refers to the fact that the tiles are subjected to further heating in special kilns.
- During the production process the decorative painting is done before, using a localised depositing on the in-view surface of a colouring substance, and then by subsequently heating the tile in special kilns in order to fix the paint on the decoration.
- The in-view surface can exhibit decorations or reliefs or rough engraving done using sanding techniques.
- The disadvantage of this process is connected with the final finish of the decorated tile.
- The heating of the in-view surface of the tile causes a change in the original colour of the tile coming from the producer and the final colour of the tile coming from the second- or third-firing companies.
- The above situation leads to the impossibility of laying, for aesthetic reasons, decorated tiles close to original non-decorated tiles and therefore leads to the necessity for the producers to outsource tile ranges which might include decorations to third parties.
- An economical compromise for the producers is to engrave the laser decoration without colouring it, exploiting special chromatic tones on the in-view surfaces which generally exhibit a dark background.
- This decoration is visible thanks to contrast effects between the in-view surface and the engraving which is generally discoloured, substantially tending to grey.
- With other types of slab elements, such as for example cotto or wood, the contrast between the in-view surface and the engraving exists in relation to the fact that the decoration exhibits a chromatic tone which is different with respect to the original colour of the slab element.
- These phenomena are caused by the high temperatures reached by the laser. In the case of slab elements such as tiles, the working temperatures of a laser fuse the in-view surface of the tile and by penetrating into the tile reach the internal ceramic mixture which, as well as reacting differently to the laser treatment with respect to the external surface and therefore having a different colour, might also exhibit traces of ferrous materials which enhance the above-mentioned phenomena of contrast.
- In the case of cotto or wooden slab elements, the operating temperatures of a laser are such as to fuse the in-view surface and the recesses of the decoration are substantially burned and thus are of a darker colour which is in contrast with respect to the original colour of the in-view surface.
- The contrast between the bottom of the engraved part and the external surface of the tile is however less evident when the tile exhibits a light-coloured bottom or background surface.
- The aim of the present process is to realise a process for cold-painting laser engraving applied on slab cladding elements.
- A further aim of the present process is to obtain a colouring of the decoration without changing the chromatic tones of the in-view surface.
- A further aim of the present process is to realise decorative colouring having monochromatic or multi-chromatic tones.
- These aims and advantages and more besides are attained by the process of the invention as it is characterised in the appended claims.
- Further characteristics and advantages of the present process will better appear from the detailed description that follows of a preferred but not exclusive embodiment of the invention, provided by way of non-limiting example in the accompanying figures of the drawings, in which:
-
figure 1 is a first stage of the process for cold-painting laser engraving applied on a slab cladding element of the present invention; -
figure 2 is a second stage of the process relating to the laser engraving; -
figure 3 is a third stage of the process relating to the cold-painting of the laser incision; -
figure 4 is a fourth stage of the process relating to the cleaning of the slab element. - With reference to the figures of the drawings, 1 denotes a slab cladding element for walls or floors.
- The cladding element can be of any polygonal or curved shaped, can be regular or irregular and can be constituted by any material such as for example ceramics, cotto, marble, granite, glass and wood.
- The cladding element 1 includes an in-
view surface 1a opposite a laying surface which is in contact with the wall or floor to be clad. - The process for cold-painting laser engravings applied on slab elements comprises a first stage of depositing an
insulating substance 2 on the in-view surface. - This depositing stage, which is obtained in a chamber using a spray gun with a plurality of
nozzles 6 facing the in-view surface 1a and illustrated infigure 1 , generates aninsulating film 10 on the in-view surface 1a whichfilm 10 has a substantially constant thickness along the whole in-view surface 1a. - Thereafter, following the graphic designing of a
decoration 3 to be made on the in-view surface 1a, thedecoration 3 is obtained by alaser pointer 4, as illustrated infigure 2 . - During this stage of the work the
laser pointer 4 creates a plurality of engravings forming thedecoration 3. - The operating temperatures of the
laser pointer 4 fuse the layer ofinsulating film 10 previously formed thereon, and at the same time thelaser pointer 4 penetrates the in-view surface 1a to a depth established on the basis of design needs or decorative requirements. - The stage following the realisation of the
decoration 3 is that of laying acolouring substance 5 on the in-view surface. - The
colouring substance 5, for obvious economic reasons, will be laid in the strict vicinity of the just-realiseddecoration 3. - This
colouring substance 5 is preferably defined by a cold resin acting on the in-view surface 1a without any need for application of heat. - Then the
colouring substance 5 will be spread in order to obtain a layer offilm 11 and thus a more uniform distribution on the in-view surface 1a will be obtained. - This work stage is also done in order to guarantee that the
colouring substance 5 entirely covers thedecoration 3. - The distribution of the
colouring substance 5 can be done manually by use of at least aspatula 7 or industrially by motorised means such as for example brushes or screens. - In manual distribution lumps of colouring substance can be found which have not been properly spread and which can be manually removed by scrapers, not illustrated in the accompanying figures of the drawings.
- After leaving the
colouring substance 5 to dry on the in-view surface 1a for about 48 hours, it is removed. - The final stage of the process is thus performed, i.e. the removal of the
colouring substance 5 from the in-view surface 1a. - This removal is done with at least a
motorised brush 8, illustrated infigure 4 , exhibiting a plurality of textile fibres which do not damage the in-view surface 1a. -
Figure 4 shows the slab element 1 with thecoloured decoration 3. - The above-described process is to be considered valid in both a case in which the decoration exhibits a single chromatic tone and in a case where the decoration includes more than one chromatic hue.
- Let us take, for example, a case in which the
decoration 3 is sub-divided into a first part 3a and asecond part 3b. - The process will include the repetition of the sequence of stages as described above for each
part 3a, 3b making up the decoration. - When first part of the decoration 3a has been coloured, the
insulating substance 2 will be deposited, the second part of thedecoration 3b engraved and then coloured with a further colouring substance, and finally both colouring substances will be removed by use of at least amotorised brush 8.
Claims (8)
- A process for cold-painting laser engravings applied on a slab cladding element (1), the slab element (1) exhibiting an in-view surface (1a), which slab element (1) is characterised in that it comprises following stages:depositing an insulating substance (2) on the in-view surface (1a);engraving a decoration (3) on the in-view surface (1a) by means of a laser (4);laying a colouring substance (5) on the in-view surface (1a);spreading a colouring substance (5) on the in-view surface (1a);removing the colouring substance (5) from the in-view surface (1a).
- The process for cold-painting laser engravings applied on a slab cladding element (1), characterised in that the process includes, following the stage of removing the colouring substance (5) from the slab cladding element (1), a stage of insulating obtained by further depositing an insulating substance (2).
- The process for cold-painting laser engravings applied on a slab cladding element (1) of claim 1, characterised in that the stage of depositing the insulating substance (2) is obtained using a plurality of nozzles (6).
- The process for cold-painting laser engravings applied on a slab cladding element (1) of claim 1, characterised in that the insulating substance (2) is preferably a non-stick substance.
- The process for cold-painting laser engravings applied on a slab cladding element (1) of claim 1, characterised in that the stage of spreading the colouring substance (5) is obtained using at least a spatula (7).
- The process for cold-painting laser engravings applied on a slab cladding element (1) of claim 5, characterised in that the colouring substance (5) is a resin.
- The process for cold-painting laser engravings applied on a slab cladding element (1) of claim 1, characterised in that the stage of removing the colouring substance (5) is obtained using at least a motorised brush (8).
- A process for cold-painting laser engravings applied on a slab cladding element (1), the slab element (1) exhibiting an in-view surface (1a) on which a decoration is to be made, whch decoration is defined by a first part (3a) and a second part (3b), the process being characterised in that it comprises following stages:depositing an insulating substance (2) on the in-view surface (1a);engraving a first part of a decoration (3a) on the in-view surface (1a) by means of a laser (4);spreading a first colouring substance (5) on the in-view surface (1a);depositing an insulating substance (2) on the in-view surface (1a);removing the colouring substance (5) from the in-view surface (1a);engraving a second part of a decoration (3b) on the in-view surface (1a) by means of a laser (4);spreading a second colouring substance (5) on the in-view surface (1a);removing the colouring substance (5) from the in-view surface (1a).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08425473A EP2143568A1 (en) | 2008-07-10 | 2008-07-10 | A process for cold-painting laser engravings applied on a slab cladding element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08425473A EP2143568A1 (en) | 2008-07-10 | 2008-07-10 | A process for cold-painting laser engravings applied on a slab cladding element |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2143568A1 true EP2143568A1 (en) | 2010-01-13 |
Family
ID=40243746
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08425473A Withdrawn EP2143568A1 (en) | 2008-07-10 | 2008-07-10 | A process for cold-painting laser engravings applied on a slab cladding element |
Country Status (1)
Country | Link |
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EP (1) | EP2143568A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105437849A (en) * | 2016-01-22 | 2016-03-30 | 胡忠 | Method of painting tree bark images in burning mode through lasers |
CN107362958A (en) * | 2017-06-28 | 2017-11-21 | 北京讯通安添通讯科技有限公司 | A kind of technique that the mute androgynous metal effect of light is realized on plastic parts |
CN109203822A (en) * | 2018-09-21 | 2019-01-15 | 厦门带缘织带饰品有限公司 | A kind of ribbon three-dimensional art method for making picture |
EP3556566A1 (en) * | 2018-03-06 | 2019-10-23 | Goodrich Corporation | Method for improving visual contrasts of laser etch marking on painted surfaces |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD215776A1 (en) * | 1983-05-31 | 1984-11-21 | Geraberg Thermometer | METHOD FOR PRODUCING COLORED IMAGES ON GLASS |
JPH06316767A (en) * | 1993-04-28 | 1994-11-15 | Pentel Kk | Formation of metal pattern |
US5523125A (en) | 1993-08-27 | 1996-06-04 | Lisco, Inc. | Laser engraving and coating process for forming indicia on articles |
WO2002077387A1 (en) * | 2001-03-23 | 2002-10-03 | Voon Kwong Tien | A floor surface and a method of treatment thereof |
US20060049141A1 (en) * | 2003-01-17 | 2006-03-09 | Fih Co., Ltd | Method of manufacturing metal cover with blind holes therein |
-
2008
- 2008-07-10 EP EP08425473A patent/EP2143568A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD215776A1 (en) * | 1983-05-31 | 1984-11-21 | Geraberg Thermometer | METHOD FOR PRODUCING COLORED IMAGES ON GLASS |
JPH06316767A (en) * | 1993-04-28 | 1994-11-15 | Pentel Kk | Formation of metal pattern |
US5523125A (en) | 1993-08-27 | 1996-06-04 | Lisco, Inc. | Laser engraving and coating process for forming indicia on articles |
WO2002077387A1 (en) * | 2001-03-23 | 2002-10-03 | Voon Kwong Tien | A floor surface and a method of treatment thereof |
US20060049141A1 (en) * | 2003-01-17 | 2006-03-09 | Fih Co., Ltd | Method of manufacturing metal cover with blind holes therein |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105437849A (en) * | 2016-01-22 | 2016-03-30 | 胡忠 | Method of painting tree bark images in burning mode through lasers |
CN107362958A (en) * | 2017-06-28 | 2017-11-21 | 北京讯通安添通讯科技有限公司 | A kind of technique that the mute androgynous metal effect of light is realized on plastic parts |
EP3556566A1 (en) * | 2018-03-06 | 2019-10-23 | Goodrich Corporation | Method for improving visual contrasts of laser etch marking on painted surfaces |
CN109203822A (en) * | 2018-09-21 | 2019-01-15 | 厦门带缘织带饰品有限公司 | A kind of ribbon three-dimensional art method for making picture |
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