CA2053150A1 - Process for the manufacture of decorated sheets of laminated safety glass - Google Patents
Process for the manufacture of decorated sheets of laminated safety glassInfo
- Publication number
- CA2053150A1 CA2053150A1 CA002053150A CA2053150A CA2053150A1 CA 2053150 A1 CA2053150 A1 CA 2053150A1 CA 002053150 A CA002053150 A CA 002053150A CA 2053150 A CA2053150 A CA 2053150A CA 2053150 A1 CA2053150 A1 CA 2053150A1
- Authority
- CA
- Canada
- Prior art keywords
- decoration
- glass
- polyethylene
- set forth
- sheets
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000008569 process Effects 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 239000005336 safety glass Substances 0.000 title claims abstract description 10
- 238000005034 decoration Methods 0.000 claims abstract description 39
- 239000004698 Polyethylene Substances 0.000 claims abstract description 19
- -1 polyethylene Polymers 0.000 claims abstract description 19
- 229920000573 polyethylene Polymers 0.000 claims abstract description 19
- 239000002985 plastic film Substances 0.000 claims abstract description 9
- 229920006255 plastic film Polymers 0.000 claims abstract description 9
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims description 35
- 239000011521 glass Substances 0.000 claims description 24
- 229920003023 plastic Polymers 0.000 claims description 11
- 239000004033 plastic Substances 0.000 claims description 11
- 239000000758 substrate Substances 0.000 claims description 11
- 239000000976 ink Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 229920002678 cellulose Polymers 0.000 claims description 5
- 239000001913 cellulose Substances 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 4
- 238000000151 deposition Methods 0.000 claims description 3
- 239000001023 inorganic pigment Substances 0.000 claims description 2
- 238000005304 joining Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 238000009435 building construction Methods 0.000 abstract description 3
- 238000003825 pressing Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 239000005340 laminated glass Substances 0.000 description 3
- 238000005303 weighing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
-
- 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
- B41M1/30—Printing on other surfaces than ordinary paper on organic plastics, horn or similar materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10165—Functional features of the laminated safety glass or glazing
- B32B17/10247—Laminated safety glass or glazing containing decorations or patterns for aesthetic reasons
- B32B17/10256—Laminated safety glass or glazing containing decorations or patterns for aesthetic reasons created by printing techniques
- B32B17/10275—Laminated safety glass or glazing containing decorations or patterns for aesthetic reasons created by printing techniques on interlayer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
- B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal
-
- 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
- B41M1/34—Printing on other surfaces than ordinary paper on glass or ceramic surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/12—Transfer pictures or the like, e.g. decalcomanias
-
- 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
- B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
- B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
- B44C1/17—Dry transfer
- B44C1/1712—Decalcomanias applied under heat and pressure, e.g. provided with a heat activable adhesive
Abstract
PROCESS FOR THE MANUFACTURE OF DECORATED SHEETS OF
LAMINATED SAFETY GLASS
ABSTRACT
Decorated sheets of laminated safety glass, particularly for use in the field of building construction and vehicles for transportation, are manufactured using a process which makes it possible to obtain a product which can be defined as laminated safety glass. The process consists in reproducing the decoration on a support formed by paper and polyethylene layers and transferring said decoration onto the interposed plastic film, using the adhesive bond differential between decoration and polyethylene and decoration and plastic film.
LAMINATED SAFETY GLASS
ABSTRACT
Decorated sheets of laminated safety glass, particularly for use in the field of building construction and vehicles for transportation, are manufactured using a process which makes it possible to obtain a product which can be defined as laminated safety glass. The process consists in reproducing the decoration on a support formed by paper and polyethylene layers and transferring said decoration onto the interposed plastic film, using the adhesive bond differential between decoration and polyethylene and decoration and plastic film.
Description
2 Q ~
PROCESS FOR THE MANUFACTURE OF DECORATED SHEETS OF
LAMINATED SAFET~ GLASS
Backqround of the Invention 1. Field of the Invention The present invention refers to a process for the manufacture of decorate~ sheets of laminated safety glass which can be used to advantage in the field of building construction and manufacturing.
Present conventional decorated sheets of glass are products having a wide range of colours, as well as the possibility of reproducing complicated decorations, for example with the use of shading.
On the other hand, the more and more widespread use of ! this glass and the ever greater variety of fields in which the glass is used mean that, as well as requirements of an aesthetic nature, the glass also has to meet safety requirements, in particular in the case of their use as windows for vehicles and/or for building construction.
2. Description of the Prior Art From the state of the art is known, and described in French utility certificate FR-2639631-B3, a safety product in glass for building, formed by two sheets of glass and by a layer of plastic inserted therebetween, said plastic ¦ layer being preferably polyvinylbutyral (PVB), in which a ! 25 design or decoration is applied on the layer of PVB, by , means of transfer techniques.
¦ The definition of laminated safety glass is given to a product, made up of two or more layers of glass, held together by a plastic material capable of resisting the impact of a soft body.
UNI standard 7142 states that the impact must be that of a sack weighing 45 Kg dropped from a height of 45 cm or from a height of 120 cm.
If the laminate resists said impact, it can be defined a safety product, belonging to class A if the weight fell from 45 cm, to class B if it fell from 120 cm.
Another standard commonly used to define a laminated - 2 - 2~31~
safety product is the boiling test described by ANSI
standard 297.1.1975, which requires that a sample of laminated glass be boiled in water for two hours, showing, at the end of said period, no bubbles or other defects at a distance greater than half an inch from the outer edge or from any break which may have occurred during the test itself.
The decorated sheets of laminated glass manufactured using the process according to the present invention are also sheets of safety glass, as they pass both the tests described above.
The process is furthermore aimed at reducing to a minimum the working phases, so as to perform a reduction of production costs.
The prior art teaches how to print a decoration on a substrate. In the present description a decoration is defined as a drawing of whatever form, colour, size and complexity, having the function of an ornament or having a utility function.
A known printing process consists, for example, in first reproducing the decoration to be transferred on paper, and then in pressing said paper, under suitable temperature and pressure conditions, onto the substrate to be decorated, by means of a calender.
To allow the decoration to be transferred easily from the paper to the substrate, the temperature is generally comprised between 160 and 220 L C, 50 as to permit the dyes to penetrate into the substrate by sublimation.
The two continuous sheets of paper and substrate, once the calendering and transfer have been carried out, divide and are each rolled up separately.
From the state of the art is also known the process for lamination of two sheets Qf glass.
Said process consists in forming an assembly made up of two sheets of glass between which is inserted a film of plastic material, preferably polyvinylbutyral (PVB). This assembly then undergoes a number of pressing cycles at ~0~3~.~0 suitable temperatures and pressures, so as to finally seal the two sheets of glass. It is known that, in the manufacture of laminated sheets of glass, one of the hardest technical problems to solve is that of air bubbles, which are trapped inside the assembly during ; pressing and which are the cause of rejection or unsticking as the product ages.
This problem was solved in the prior art by making particularly wrinkled the surfaces of the interposed plastic (polyvinylbutyral) permitting the air bubbles to ; escape during the first of the pressing cycles, so that the adhesiveness between the interposed layer and the sheets of glass is not reduced and the product passes the boiling and shattering tests described above.
In the case of decorations of varying kinds being applied by transfer onto the surface of the PVB surface, the temperatures and pressures used, described in the known printing processes, destroy these wrinkles found on j the surface, thus preventing an efficient removal of air j 20 bubbles from the laminate during its manufacture.
It has thus been necessary to find particular types of ink and particular types of support on which to place the decorations so that, at the moment of transfer, the alteration in the surface of the PVB is avoided.
Summarv of the Invention It has now been discovered that the film of plastic material, in this case polyvinylbutyral, can be easily decorated, without for this reason damaging the physical characteristics of its surfaces, by means of a process for transfer of the decoration onto the PVB which makes sole use of the adhesive capacity of the PVB itself to said decoration.
In particular a new support for the decoration has been found, formed by a substrate of a cellulose layer, such as paper, covered by a second layer of polyethylene.
The layer of polyethylene is deposited on the paper and joined thereto using known methods. The decoration is ~ 4 ~ 2 ~ 0 made using inks comprislng polyvinylbutyral and organic pigments deposited directly onto the layer of polyethylene.
In this way the cellulose layer (paper) has the function of making the system rigid and thus of preventing any deformation of the decoration, while the polyethylene has a releasing function.
In fact, when the strip of support is put into contact, in a calender, with the strip of PVB, the decoration easily transfers onto the PVB, as the adhesion of the decoration to the polyethylene is less than that of the decoration to the PVB.
In this case the action of a high temperature is no longer of importance and thus it is no longer necessary to lS exceed a temperature of 60C during the transfer phase of the decoration onto the strip of PVB. Furthermore, only a pressure sufficient to keep the two strips together is necessary.
In other words the transfer of the decoration onto the PVB is carried out merely by taking advantage of the different adhesive capacities existing between the polyethylene ink and ink PVB interfaces, and the decoration is transferred onto the PVB as if it were a film of PVB sticking to another film of PVB.
An object of the present invention is therefore a process for the manufacture of decorated sheets of laminated safety glass, of the kind including the steps of decorating a film of plastic material, an assembly consisting of two sheets of glass having the plastic film interposed between them, and laminating the assembly, comprising the following operations:
a) preparation of a support by depositing on a substrate of cellulose paper and joining thereto a layer of polyethylene, b) making a decoration on the layer of polyethylene, c) transferring said decoration from the layer of polyethylene onto the film of plastic to be interposed, 2~3~0 d) forming a glass/decorated film/glass assembly, e) laminating the assembly thus obtained, the transfer of the decoration onto the PVB film taking place because the bond between polyethylene and decoration is less strong than that between decoration and PVB.
The advantage of the process according to the present invention resides in the fact that the PVB can be used immediately after transfer of the decoration, and has no need of successive treatments, such as, for example, washing before being inserted as an interposed layer between two sheets of glass to be laminated.
Description of the preferred embodiment The peculiar features of the invention will be more clearly seen on consideration of a preferred embodiment of the process, as hereinbelow described.
A roll of tape of polyvinylbutyral film is loaded onto a feed roller roller of a printing machine which uses the transfer method. A roll of tape of decorated support is loaded onto another feed roller in the same transfer machine.
The decorated support has been made using as a substrate a strip of paper weighing between 40 and 60 grammes per square meter and depositing on the paper substrate a layer of polyethylene having a uniform thickness and a weight of approximately 20-25 grammes per square meter. The two layers were then ~oined using known methods. On the polyethylene layer decorations were made ; using inks based on polyvinylbutyral and inorganic pigments.
The two tapes, PVB and decorated support respectively, pass around a heated transfer calender and are kept one against the other by means of a strip of felt wrapped around the assembly of support, PVB and calender.
The calender heats the PVB to a temperature equivalent to approximately 60C, sufficient to allow rapid transfer of the decoration from the support to the PVB.
Following this, the support and the PVB separate and 2~53~.~0 the support is wound up again, while the PVB is cooled, cut into sheets and transferred to the production line for manufacture of laminated sheets of glass, where it will be inserted between the pairs of sheets of glass.
The assembly formed by the two sheets of glass with the decorated PVB film interposed therebetween is then hot-pressed one or more times, to deareate the system, and then treated in an autoclave to finally seal the whole ; assembly.
Shattering and boiling tests undergone by the samples of decorated laminated glass obtained according to the process described were all passed successfully, thus also allowing the product to be defined a safety product.
Although the invention has been described with reference to a preferred embodiment thereof, it is to be understood that the invention is not limited to this precise embodiment and that changes may be made therein without departing from the scope of the invention.
PROCESS FOR THE MANUFACTURE OF DECORATED SHEETS OF
LAMINATED SAFET~ GLASS
Backqround of the Invention 1. Field of the Invention The present invention refers to a process for the manufacture of decorate~ sheets of laminated safety glass which can be used to advantage in the field of building construction and manufacturing.
Present conventional decorated sheets of glass are products having a wide range of colours, as well as the possibility of reproducing complicated decorations, for example with the use of shading.
On the other hand, the more and more widespread use of ! this glass and the ever greater variety of fields in which the glass is used mean that, as well as requirements of an aesthetic nature, the glass also has to meet safety requirements, in particular in the case of their use as windows for vehicles and/or for building construction.
2. Description of the Prior Art From the state of the art is known, and described in French utility certificate FR-2639631-B3, a safety product in glass for building, formed by two sheets of glass and by a layer of plastic inserted therebetween, said plastic ¦ layer being preferably polyvinylbutyral (PVB), in which a ! 25 design or decoration is applied on the layer of PVB, by , means of transfer techniques.
¦ The definition of laminated safety glass is given to a product, made up of two or more layers of glass, held together by a plastic material capable of resisting the impact of a soft body.
UNI standard 7142 states that the impact must be that of a sack weighing 45 Kg dropped from a height of 45 cm or from a height of 120 cm.
If the laminate resists said impact, it can be defined a safety product, belonging to class A if the weight fell from 45 cm, to class B if it fell from 120 cm.
Another standard commonly used to define a laminated - 2 - 2~31~
safety product is the boiling test described by ANSI
standard 297.1.1975, which requires that a sample of laminated glass be boiled in water for two hours, showing, at the end of said period, no bubbles or other defects at a distance greater than half an inch from the outer edge or from any break which may have occurred during the test itself.
The decorated sheets of laminated glass manufactured using the process according to the present invention are also sheets of safety glass, as they pass both the tests described above.
The process is furthermore aimed at reducing to a minimum the working phases, so as to perform a reduction of production costs.
The prior art teaches how to print a decoration on a substrate. In the present description a decoration is defined as a drawing of whatever form, colour, size and complexity, having the function of an ornament or having a utility function.
A known printing process consists, for example, in first reproducing the decoration to be transferred on paper, and then in pressing said paper, under suitable temperature and pressure conditions, onto the substrate to be decorated, by means of a calender.
To allow the decoration to be transferred easily from the paper to the substrate, the temperature is generally comprised between 160 and 220 L C, 50 as to permit the dyes to penetrate into the substrate by sublimation.
The two continuous sheets of paper and substrate, once the calendering and transfer have been carried out, divide and are each rolled up separately.
From the state of the art is also known the process for lamination of two sheets Qf glass.
Said process consists in forming an assembly made up of two sheets of glass between which is inserted a film of plastic material, preferably polyvinylbutyral (PVB). This assembly then undergoes a number of pressing cycles at ~0~3~.~0 suitable temperatures and pressures, so as to finally seal the two sheets of glass. It is known that, in the manufacture of laminated sheets of glass, one of the hardest technical problems to solve is that of air bubbles, which are trapped inside the assembly during ; pressing and which are the cause of rejection or unsticking as the product ages.
This problem was solved in the prior art by making particularly wrinkled the surfaces of the interposed plastic (polyvinylbutyral) permitting the air bubbles to ; escape during the first of the pressing cycles, so that the adhesiveness between the interposed layer and the sheets of glass is not reduced and the product passes the boiling and shattering tests described above.
In the case of decorations of varying kinds being applied by transfer onto the surface of the PVB surface, the temperatures and pressures used, described in the known printing processes, destroy these wrinkles found on j the surface, thus preventing an efficient removal of air j 20 bubbles from the laminate during its manufacture.
It has thus been necessary to find particular types of ink and particular types of support on which to place the decorations so that, at the moment of transfer, the alteration in the surface of the PVB is avoided.
Summarv of the Invention It has now been discovered that the film of plastic material, in this case polyvinylbutyral, can be easily decorated, without for this reason damaging the physical characteristics of its surfaces, by means of a process for transfer of the decoration onto the PVB which makes sole use of the adhesive capacity of the PVB itself to said decoration.
In particular a new support for the decoration has been found, formed by a substrate of a cellulose layer, such as paper, covered by a second layer of polyethylene.
The layer of polyethylene is deposited on the paper and joined thereto using known methods. The decoration is ~ 4 ~ 2 ~ 0 made using inks comprislng polyvinylbutyral and organic pigments deposited directly onto the layer of polyethylene.
In this way the cellulose layer (paper) has the function of making the system rigid and thus of preventing any deformation of the decoration, while the polyethylene has a releasing function.
In fact, when the strip of support is put into contact, in a calender, with the strip of PVB, the decoration easily transfers onto the PVB, as the adhesion of the decoration to the polyethylene is less than that of the decoration to the PVB.
In this case the action of a high temperature is no longer of importance and thus it is no longer necessary to lS exceed a temperature of 60C during the transfer phase of the decoration onto the strip of PVB. Furthermore, only a pressure sufficient to keep the two strips together is necessary.
In other words the transfer of the decoration onto the PVB is carried out merely by taking advantage of the different adhesive capacities existing between the polyethylene ink and ink PVB interfaces, and the decoration is transferred onto the PVB as if it were a film of PVB sticking to another film of PVB.
An object of the present invention is therefore a process for the manufacture of decorated sheets of laminated safety glass, of the kind including the steps of decorating a film of plastic material, an assembly consisting of two sheets of glass having the plastic film interposed between them, and laminating the assembly, comprising the following operations:
a) preparation of a support by depositing on a substrate of cellulose paper and joining thereto a layer of polyethylene, b) making a decoration on the layer of polyethylene, c) transferring said decoration from the layer of polyethylene onto the film of plastic to be interposed, 2~3~0 d) forming a glass/decorated film/glass assembly, e) laminating the assembly thus obtained, the transfer of the decoration onto the PVB film taking place because the bond between polyethylene and decoration is less strong than that between decoration and PVB.
The advantage of the process according to the present invention resides in the fact that the PVB can be used immediately after transfer of the decoration, and has no need of successive treatments, such as, for example, washing before being inserted as an interposed layer between two sheets of glass to be laminated.
Description of the preferred embodiment The peculiar features of the invention will be more clearly seen on consideration of a preferred embodiment of the process, as hereinbelow described.
A roll of tape of polyvinylbutyral film is loaded onto a feed roller roller of a printing machine which uses the transfer method. A roll of tape of decorated support is loaded onto another feed roller in the same transfer machine.
The decorated support has been made using as a substrate a strip of paper weighing between 40 and 60 grammes per square meter and depositing on the paper substrate a layer of polyethylene having a uniform thickness and a weight of approximately 20-25 grammes per square meter. The two layers were then ~oined using known methods. On the polyethylene layer decorations were made ; using inks based on polyvinylbutyral and inorganic pigments.
The two tapes, PVB and decorated support respectively, pass around a heated transfer calender and are kept one against the other by means of a strip of felt wrapped around the assembly of support, PVB and calender.
The calender heats the PVB to a temperature equivalent to approximately 60C, sufficient to allow rapid transfer of the decoration from the support to the PVB.
Following this, the support and the PVB separate and 2~53~.~0 the support is wound up again, while the PVB is cooled, cut into sheets and transferred to the production line for manufacture of laminated sheets of glass, where it will be inserted between the pairs of sheets of glass.
The assembly formed by the two sheets of glass with the decorated PVB film interposed therebetween is then hot-pressed one or more times, to deareate the system, and then treated in an autoclave to finally seal the whole ; assembly.
Shattering and boiling tests undergone by the samples of decorated laminated glass obtained according to the process described were all passed successfully, thus also allowing the product to be defined a safety product.
Although the invention has been described with reference to a preferred embodiment thereof, it is to be understood that the invention is not limited to this precise embodiment and that changes may be made therein without departing from the scope of the invention.
Claims (8)
1. A process for the manufacture of decorated sheets of laminated safety glass, of the kind including the steps of decorating a film of plastic material, forming an assembly consisting of two sheets of glass having said plastic film interposed between them, and laminating said assembly, characterized by the following operations:
a) preparation of a support by depositing on a substrate of cellulose paper and joining thereto a layer of polyethylene, b) making a decoration on said layer of polyethylene, c) transferring said decoration from the layer of polyethylene onto the film of plastic to be interposed, d) forming a glass/decorated film/glass assembly, e) laminating the assembly thus obtained.
a) preparation of a support by depositing on a substrate of cellulose paper and joining thereto a layer of polyethylene, b) making a decoration on said layer of polyethylene, c) transferring said decoration from the layer of polyethylene onto the film of plastic to be interposed, d) forming a glass/decorated film/glass assembly, e) laminating the assembly thus obtained.
2. A process as set forth in claim 1, in which said plastic material is polyvinylbutyral.
3. A process as set forth in claim 2, in which said decoration is made preferably by-means of inks based on polyvinylbutyral and inorganic pigments.
4. A process as set forth in claim 1, in which the transfer of the decoration onto the plastic film is carried out using a decoration and a plastic film, the bond between which is stronger than that between decoration and polyethylene.
5. A process as set forth in claim 1, in which the transfer of the decoration from the support to the plastic film is carried out around a calender which heats said plastic film to a temperature not exceeding 60°C.
6. A process as set forth in claim 1, in which the layer of polyethylene deposited on the cellulose paper substrate has a weight not higher than 25 grams per square meter.
7. A process as set forth in claim 1, in which the decorated plastic film is laminated together with the sheets of glass immediately after the decoration has been transferred onto it.
8. Decorated sheet of laminated safety glass obtained according to a process set forth in claim 1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT48354A IT1242070B (en) | 1990-10-11 | 1990-10-11 | PROCEDURE FOR THE MANUFACTURE OF LAMINATED DECORATED SAFETY GLASS |
| IT48354A/90 | 1990-10-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2053150A1 true CA2053150A1 (en) | 1992-04-12 |
Family
ID=11266070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002053150A Abandoned CA2053150A1 (en) | 1990-10-11 | 1991-10-10 | Process for the manufacture of decorated sheets of laminated safety glass |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5364479A (en) |
| EP (1) | EP0480892A1 (en) |
| CA (1) | CA2053150A1 (en) |
| IT (1) | IT1242070B (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9706427D0 (en) * | 1997-03-27 | 1997-05-14 | Pearson David | Glass treatment process and apparatus |
| EP1129844A1 (en) * | 2000-02-29 | 2001-09-05 | Brevet 2000 Holding S.A. | Composite stratified decorated panel from glass and/or transparent plastics |
| CA2420870C (en) * | 2000-09-01 | 2010-06-22 | Digiglass Pty. Ltd. | Image carrying laminated material |
| US7316832B2 (en) | 2001-12-20 | 2008-01-08 | The Procter & Gamble Company | Articles and methods for applying color on surfaces |
| US7709070B2 (en) | 2001-12-20 | 2010-05-04 | The Procter & Gamble Company | Articles and methods for applying color on surfaces |
| ITMO20020126A1 (en) * | 2002-05-16 | 2003-11-17 | Viv Int Spa | METHOD AND APPARATUS TO PRODUCE DECORATING MEDIA SUITABLE FOR DECORATING OBJECTS AND RELATED DECORATING MEDIA |
| US20070087137A9 (en) * | 2003-06-26 | 2007-04-19 | Elwakil Hamdy A | Decorative laminated safety glass |
| US20040161564A1 (en) | 2003-02-14 | 2004-08-19 | Truog Keith L. | Dry paint transfer laminate |
| AU2004213399A1 (en) | 2003-02-14 | 2004-09-02 | Avery Dennison Corporation | Differential release system for a self-wound multilayer dry paint decorative laminate having a pressure sensitive adhesive |
| WO2004101272A1 (en) * | 2003-05-13 | 2004-11-25 | Digiglass Pty Ltd | Image carrying sheet |
| US20050196607A1 (en) | 2003-06-09 | 2005-09-08 | Shih Frank Y. | Multi-layer dry paint decorative laminate having discoloration prevention barrier |
| US7135217B2 (en) * | 2004-01-09 | 2006-11-14 | Solutia Incorporated | Multiple layer glass panels with patterned light transmission |
| US20120227901A1 (en) * | 2006-06-01 | 2012-09-13 | Ceralink, Inc. | Method of lamination using radio frequency heating and pressure |
| US20080206504A1 (en) * | 2007-02-28 | 2008-08-28 | Richard Allen Hayes | Decorative Safety Glass |
| US20080233371A1 (en) * | 2007-03-19 | 2008-09-25 | Richard Allen Hayes | Decorative safety glass |
| FR2925483B1 (en) * | 2007-12-20 | 2010-01-08 | Saint Gobain | DECORATIVE GLAZING. |
| KR101722799B1 (en) * | 2009-08-07 | 2017-04-05 | 주식회사 쿠라레 | Polyvinyl acetal laminate and use thereof |
| DE202012003668U1 (en) * | 2012-04-12 | 2013-07-15 | Joseph Vögele AG | Control station for a road construction machine |
| GB201212930D0 (en) * | 2012-07-20 | 2012-09-05 | Pilkington Group Ltd | Method of manufacturing a glazing |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE899944C (en) * | 1951-01-27 | 1953-12-17 | Basf Ag | Process for the production of plaque patterns for objects made of polyethylene |
| NL7407548A (en) * | 1974-03-21 | 1975-09-23 | P V B A Walter & Co | PROCEDURE FOR MANUFACTURING HAND-OFF DECALS AS WELL AS THE DECALS OBTAINED THEREFORE. |
| US4173672A (en) * | 1977-09-06 | 1979-11-06 | Mannheim Jose R | Decorated safety glass |
| KR910000733B1 (en) * | 1987-03-09 | 1991-02-06 | 다이니폰 인사츠 가부시키가이샤 | Method of producing decorative interplayer for laminated glass |
| US4935300A (en) * | 1988-04-13 | 1990-06-19 | Dennison Manufacturing Company | Heat transferable laminate |
-
1990
- 1990-10-11 IT IT48354A patent/IT1242070B/en active IP Right Grant
-
1991
- 1991-10-09 EP EP91830424A patent/EP0480892A1/en not_active Withdrawn
- 1991-10-10 CA CA002053150A patent/CA2053150A1/en not_active Abandoned
-
1993
- 1993-05-12 US US08/060,515 patent/US5364479A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| IT9048354A0 (en) | 1990-10-11 |
| IT9048354A1 (en) | 1992-04-11 |
| US5364479A (en) | 1994-11-15 |
| EP0480892A1 (en) | 1992-04-15 |
| IT1242070B (en) | 1994-02-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |