CA1133770A - Glass painting technique - Google Patents
Glass painting techniqueInfo
- Publication number
- CA1133770A CA1133770A CA388,028A CA388028A CA1133770A CA 1133770 A CA1133770 A CA 1133770A CA 388028 A CA388028 A CA 388028A CA 1133770 A CA1133770 A CA 1133770A
- Authority
- CA
- Canada
- Prior art keywords
- glass
- coating
- paint
- panel
- applying
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
- C03C17/32—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material with synthetic or natural resins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/06—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for producing matt surfaces, e.g. on plastic materials, on glass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44F—SPECIAL DESIGNS OR PICTURES
- B44F1/00—Designs or pictures characterised by special or unusual light effects
- B44F1/02—Designs or pictures characterised by special or unusual light effects produced by reflected light, e.g. matt surfaces, lustrous surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44F—SPECIAL DESIGNS OR PICTURES
- B44F1/00—Designs or pictures characterised by special or unusual light effects
- B44F1/06—Designs or pictures characterised by special or unusual light effects produced by transmitted light, e.g. transparencies, imitations of glass paintings
Abstract
ABSTRACT
There is provided a novel method of applying a coating to glass comprising sandblasting the surface of the glass and subsequently applying to the surface an acrylic paint coating by means of a sponge applicator, and a product produced according to the method.
There is provided a novel method of applying a coating to glass comprising sandblasting the surface of the glass and subsequently applying to the surface an acrylic paint coating by means of a sponge applicator, and a product produced according to the method.
Description
~33~'7~
This application relates to a method of applying a coating to glass and to a product produced by the method.
BACKGROUND OF T~IE INVENTION
For centuries there has been a demand for coloured glass of various types to create a variety of visual effects. A classic example of glasswork of this nature is found in stained glass. The interest in working with coloured glass continues to the present day with new techniques and lighting effects continuously being examined.
In terms of utilizing glass as a simple paint support and applying the paint to the glass, a number of difficulties have persisted through the years~ The problem of lack of adherence of paints to glass is one of the most serious of these problems.
Another is the generally unattractive effect created by brush strokes and overlapping layers of paint when viewed in the very revealing enviromnent of light transmitted through the glass.
These problems with painting on glass apply to polymeric type paints such as acrylics. These modern paints are otherwise very versatile media, providing a major breakthrough in the characteristics of the colour available to the artist. It would be very desirable to be able to extend the wide range of paint supports with which these colours can be used to include glass.
A technique has now been discovered which will allow the use of acrylic colours on glass and which avoids the problems discussed above.
PRIOR ART
The applicant is unaware of any prior art material which ," ~
~3~
describes any method of applying a fine even coating of acrylic colour to a glass surface with any degree of permanence. On the contrary, suppliers of acrylic paints specifically indicate that the paints are not suitable for application to glass.
_U~MARY OF THE INVENTION
~ technique has now been discovered which will permit the application of a uniform acrylic paint layer to glass. The glass is first sandblasted to provide a surface having "tooth". This surface preparation promotes adherence of the paint to the glass. The paint is then applied to the prepared glass surface by means of a sponge applicator. The sponge eliminates brush strokes and the overlapping created by the strokes.
Accordingly, the invention provides a method of applying a coating to glass comprising sandblasting the surface of the glass and subsequently applying to the surface an acrylic paint coating by means of a sponge applicator.
There is also provided a painted glass surface comprising, in order, a piece of glass sandblasted on one side thereof and an acrylic paint coating applied to the sandblasted side of the glass.
DESCRIPTION OF THE INVENTION
_ _ _ As indicated above, a sheet of glass to which it is desired to apply an acrylic paint coating is first treated by sandblasting.
The sandblasting imparts to the glass a frosted appearance. me physical effect of the sandblasting is to provide "tooth" to the glass. The "tooth" consists of a microscopic pitting of the glass
This application relates to a method of applying a coating to glass and to a product produced by the method.
BACKGROUND OF T~IE INVENTION
For centuries there has been a demand for coloured glass of various types to create a variety of visual effects. A classic example of glasswork of this nature is found in stained glass. The interest in working with coloured glass continues to the present day with new techniques and lighting effects continuously being examined.
In terms of utilizing glass as a simple paint support and applying the paint to the glass, a number of difficulties have persisted through the years~ The problem of lack of adherence of paints to glass is one of the most serious of these problems.
Another is the generally unattractive effect created by brush strokes and overlapping layers of paint when viewed in the very revealing enviromnent of light transmitted through the glass.
These problems with painting on glass apply to polymeric type paints such as acrylics. These modern paints are otherwise very versatile media, providing a major breakthrough in the characteristics of the colour available to the artist. It would be very desirable to be able to extend the wide range of paint supports with which these colours can be used to include glass.
A technique has now been discovered which will allow the use of acrylic colours on glass and which avoids the problems discussed above.
PRIOR ART
The applicant is unaware of any prior art material which ," ~
~3~
describes any method of applying a fine even coating of acrylic colour to a glass surface with any degree of permanence. On the contrary, suppliers of acrylic paints specifically indicate that the paints are not suitable for application to glass.
_U~MARY OF THE INVENTION
~ technique has now been discovered which will permit the application of a uniform acrylic paint layer to glass. The glass is first sandblasted to provide a surface having "tooth". This surface preparation promotes adherence of the paint to the glass. The paint is then applied to the prepared glass surface by means of a sponge applicator. The sponge eliminates brush strokes and the overlapping created by the strokes.
Accordingly, the invention provides a method of applying a coating to glass comprising sandblasting the surface of the glass and subsequently applying to the surface an acrylic paint coating by means of a sponge applicator.
There is also provided a painted glass surface comprising, in order, a piece of glass sandblasted on one side thereof and an acrylic paint coating applied to the sandblasted side of the glass.
DESCRIPTION OF THE INVENTION
_ _ _ As indicated above, a sheet of glass to which it is desired to apply an acrylic paint coating is first treated by sandblasting.
The sandblasting imparts to the glass a frosted appearance. me physical effect of the sandblasting is to provide "tooth" to the glass. The "tooth" consists of a microscopic pitting of the glass
- 2 -1~3~77~.3 surface. The pitting leads to the creation of tiny prisms which decompose and recompose the incident light many times and result in the frosted appearance. The frosted appearance is purely a visual effect and does not indicate any interference with the translucence of the glass.
The paint to be applied to the sandblasted glass surface is selected by the artist or painter from among available acrylic colours according to the requirements of the individual project. The desired effect to be achieved in the product and the environment in which the product will be placed will influence the choice of paint.
For example, colours must be chosen which are sufficiently translucent in themselves to achieve a predetermined level of translucence in the final product. Similarly, colours must be chosen which are particularly resistant to certain detrimental components of the environment, such as ultra-violet rays.
Relative colourfastness of various pigments can be obtained from the literature. One such source is Levison, H.W., Artists' Pigments Lightfastness and Ratin&~, Colorlab, Hallandnale, Florida (1976).
The manner of application of the paint to the surface greatly effects the finished product. Thus, as indicated above, if the paint were applied by means of a brush, the translucence of the glass highlights the individual brush strokes and the differences in paint thickness created by the overlapping of the brush strokes. It is therefore impractical to attempt to apply an even expanse of colour through the use of a brush. The present invention ~3~7~3 contemplates the use of sponge applicators. The use of these sponges on the prepared glass surface results in a very fine and slightly fuzzy texture and permits the achievement of a visually pleasant surface and satisEactory evenness where desired. The technique permits of the application of layers of difEerent colours to achieve the desired shading and blending while still maintaining the basic characteristics of fine even texture.
Any synthetic or natural sponge could be utilized for the invention. For reasons of expense and availability synthetic sponges would normally be utilized. ~gain, while different sponge textures could be used for different purposes, a sponge of medium coarseness will generally be suitable.
The sponges will preferably be shaped to a pencil-like end area of varying thickness. For example, a range of end thicknesses could typically be from about 1/4 inch to about 2 inches. The end area in some cases may be more rounded and in others more elongated.
The preferred manner of applying the paint utilizing these shaped sponges is by a dabbing technique. The effect generally is to leave no precise edge marks and so to permit a blending of the dabbed strokes.
; The sponge will preferably be dampened prior to application of paint.
In addition to promoting the adherence of the paint to the glass, the sandblasted surface offers additional advantages. The prismatic affect of the pitting of the glass surface results in a ~337~
diffusion of incident light which in turn imparts to the finished product a soft glow and creates the impression that the light is emanating from the glass itself rather than through the glass.
Furthermore, the finished product is visually very effective in both reflected and transmitted light. Thus, the effects are very good from both sides at the same time. This is in contrast to stained glass.
In the preferred embodiment a colourless acrylic gel medium is applied to the sandblasted glass surface and allowed to dry prior to the application of the paint itself. The gel has a higher adhesivity than the paint and thus promotes the adherence of the paint.
A further preferred technique is to temper the glass following sandblasting simply for purposes of added strength.
A further aspect of the invention provides the additional steps of applying over the coated surface a second glass panel, so as to provide a space between the panels, and simultaneously or subsequently evacuating the said space. The product is thus in the nature of a thermopane window having the interior surface of one pane coated with acrylic paint.
The absence of any significant amount of air or moisture in the evacuated space will contribute to the preservation of the colours.
There has thus been described a new technique which permits the application to a glass surface of a permanently adhered coating of acrylic paint having a fine even texture.
The paint to be applied to the sandblasted glass surface is selected by the artist or painter from among available acrylic colours according to the requirements of the individual project. The desired effect to be achieved in the product and the environment in which the product will be placed will influence the choice of paint.
For example, colours must be chosen which are sufficiently translucent in themselves to achieve a predetermined level of translucence in the final product. Similarly, colours must be chosen which are particularly resistant to certain detrimental components of the environment, such as ultra-violet rays.
Relative colourfastness of various pigments can be obtained from the literature. One such source is Levison, H.W., Artists' Pigments Lightfastness and Ratin&~, Colorlab, Hallandnale, Florida (1976).
The manner of application of the paint to the surface greatly effects the finished product. Thus, as indicated above, if the paint were applied by means of a brush, the translucence of the glass highlights the individual brush strokes and the differences in paint thickness created by the overlapping of the brush strokes. It is therefore impractical to attempt to apply an even expanse of colour through the use of a brush. The present invention ~3~7~3 contemplates the use of sponge applicators. The use of these sponges on the prepared glass surface results in a very fine and slightly fuzzy texture and permits the achievement of a visually pleasant surface and satisEactory evenness where desired. The technique permits of the application of layers of difEerent colours to achieve the desired shading and blending while still maintaining the basic characteristics of fine even texture.
Any synthetic or natural sponge could be utilized for the invention. For reasons of expense and availability synthetic sponges would normally be utilized. ~gain, while different sponge textures could be used for different purposes, a sponge of medium coarseness will generally be suitable.
The sponges will preferably be shaped to a pencil-like end area of varying thickness. For example, a range of end thicknesses could typically be from about 1/4 inch to about 2 inches. The end area in some cases may be more rounded and in others more elongated.
The preferred manner of applying the paint utilizing these shaped sponges is by a dabbing technique. The effect generally is to leave no precise edge marks and so to permit a blending of the dabbed strokes.
; The sponge will preferably be dampened prior to application of paint.
In addition to promoting the adherence of the paint to the glass, the sandblasted surface offers additional advantages. The prismatic affect of the pitting of the glass surface results in a ~337~
diffusion of incident light which in turn imparts to the finished product a soft glow and creates the impression that the light is emanating from the glass itself rather than through the glass.
Furthermore, the finished product is visually very effective in both reflected and transmitted light. Thus, the effects are very good from both sides at the same time. This is in contrast to stained glass.
In the preferred embodiment a colourless acrylic gel medium is applied to the sandblasted glass surface and allowed to dry prior to the application of the paint itself. The gel has a higher adhesivity than the paint and thus promotes the adherence of the paint.
A further preferred technique is to temper the glass following sandblasting simply for purposes of added strength.
A further aspect of the invention provides the additional steps of applying over the coated surface a second glass panel, so as to provide a space between the panels, and simultaneously or subsequently evacuating the said space. The product is thus in the nature of a thermopane window having the interior surface of one pane coated with acrylic paint.
The absence of any significant amount of air or moisture in the evacuated space will contribute to the preservation of the colours.
There has thus been described a new technique which permits the application to a glass surface of a permanently adhered coating of acrylic paint having a fine even texture.
Claims (12)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A method of applying a coating to glass comprising sand-blasting the surface of the glass and subsequently applying to the surface an acrylic paint coating by means of a sponge applicator.
2. The method of claim 1 including tempering the glass after sandblasting and before applying the coating.
3. The method of claim 1 including the additional steps of applying a transparent acrylic gel coating to the sandblasted glass, and allowing the gel coating to dry prior to applying the paint coating.
4. The method of claim 1, 2 or 3 including the additional step of applying a second glass surface over the painted surface, supporting said second surface so as to leave a very small space between the two glass surfaces, and substantially evacuating the said space.
5. A coated glass panel comprising, in order, a piece of glass sandblasted on one side thereof and an acrylic paint coating applied to the sandblasted side of the glass, said coating having been applied by means of a sponge applicator.
6. The panel of claim 5 wherein said glass is tempered.
7. The panel of claim 5 including between said glass and said paint a transparent acrylic layer.
8. The panel of claim 5 wherein said paint is sufficiently translucent to achieve a predetermined degree of translucency in the finished panel.
9. A coated glass panel comprising, in order, a first piece of glass sandblasted on one surface thereof and an acrylic paint coating applied to the said sandblasted surface, said coating having been applied by means of a sponge applicator; and having a second piece of glass applied over the paint coating but with a thin substantially evacuated space between said second piece and said paint coating.
10. The panel of claim 9 wherein said glass pieces are tempered.
11. The panel of claim 9 including a clear acrylic layer between said first piece of glass and said coating.
12. The panel of claim 9 wherein said paint is sufficiently translucent to achieve a predetermined degree of translucency in the finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA388,028A CA1133770A (en) | 1981-10-15 | 1981-10-15 | Glass painting technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA388,028A CA1133770A (en) | 1981-10-15 | 1981-10-15 | Glass painting technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1133770A true CA1133770A (en) | 1982-10-19 |
Family
ID=4121179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA388,028A Expired CA1133770A (en) | 1981-10-15 | 1981-10-15 | Glass painting technique |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1133770A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0835850A2 (en) * | 1996-10-08 | 1998-04-15 | Axivetro S.a.S. di Martelli Giuliano E C. | Method for surface processing a glass plate and processed glass plate obtained thereby |
-
1981
- 1981-10-15 CA CA388,028A patent/CA1133770A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0835850A2 (en) * | 1996-10-08 | 1998-04-15 | Axivetro S.a.S. di Martelli Giuliano E C. | Method for surface processing a glass plate and processed glass plate obtained thereby |
| EP0835850A3 (en) * | 1996-10-08 | 1999-01-07 | Axivetro S.a.S. di Martelli Giuliano E C. | Method for surface processing a glass plate and processed glass plate obtained thereby |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |