CA1269604A - Laminar glass assemblies - Google Patents
Laminar glass assembliesInfo
- Publication number
- CA1269604A CA1269604A CA000480008A CA480008A CA1269604A CA 1269604 A CA1269604 A CA 1269604A CA 000480008 A CA000480008 A CA 000480008A CA 480008 A CA480008 A CA 480008A CA 1269604 A CA1269604 A CA 1269604A
- Authority
- CA
- Canada
- Prior art keywords
- glass
- film
- adhesive
- plastics film
- layer
- 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 - Fee Related
Links
Classifications
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- 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
- B32B17/10009—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 number, the constitution or treatment of glass sheets
- B32B17/10036—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 number, the constitution or treatment of glass sheets comprising two outer glass sheets
-
- 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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- 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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- 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
- B32B2315/00—Other materials containing non-metallic inorganic compounds not provided for in groups B32B2311/00 - B32B2313/04
- B32B2315/08—Glass
-
- 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
- B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
Landscapes
- Laminated Bodies (AREA)
Abstract
A B S T R A C T O F T H E I N V E N T I O N
LAMINAR GLASS ASSEMBLIES
A laminar glass assembly comprises two sheets of glass with an intermediate plastics film disposed between them. The plastics film is directly adhered to one of the glass sheets by a thin adhesive layer and to the other of the glass sheets by a layer of adhesive which has structural properties and is of substantial thickness compared to that of the film. Thus the thick structural adhesive film provides structural reinforcement of the resultant laminate, and this adhesive and its thickness are chosen to provide the desired laminate strength which is thus not determined by the intermediate plastics film. Hence the latter can be chosen independently of its strength and may be a thin film selected for other desired properties.
LAMINAR GLASS ASSEMBLIES
A laminar glass assembly comprises two sheets of glass with an intermediate plastics film disposed between them. The plastics film is directly adhered to one of the glass sheets by a thin adhesive layer and to the other of the glass sheets by a layer of adhesive which has structural properties and is of substantial thickness compared to that of the film. Thus the thick structural adhesive film provides structural reinforcement of the resultant laminate, and this adhesive and its thickness are chosen to provide the desired laminate strength which is thus not determined by the intermediate plastics film. Hence the latter can be chosen independently of its strength and may be a thin film selected for other desired properties.
Description
"LAMINAR GLASS ASSEMBLIES"
The invention relates to laminar glass assemblies and is particularly, but by no means exclusively, concerned with such assemblies having solar control and/or energy saving properties.
Assemblies are known comprising a sheet of glass to one surface of which is adhered a plastics film having solar control and/or energy saving properties. Such a plastics film may have a metallized or otherwise applied coating which transmits incident sunlight according to the angle of incidence of the sun's rays, the film may provide an ultra-violet barrier, and the coating reflects heat back into the building in which the glass is used.
Assemblies are also known, commonly referred to as "laminated safety glass", which comprise a plastics sheet sandwiched between two sheets of annealed glass to provide strengthened anti-splinter glass for safety and anti-bandit purposes. Due to the use of annealed glass sheets this avoids the distortion which is obtained with ~ homogeneous "toughened" glass.
The object of the invention is to provide laminar glass assemblies providing improved solar control and/or energy saving and/or strength properties as compared with known assemblies.
According to one aspect of the invention, a laminar glass assembly comprises two sheets of glass with a plastics ~ilm disposed between them, the plastics film ~.~
being directly adhere~ to one of said glass sheets by a thin adhesive layer and to the other of said glass sheets by a layer of adhesive having structural properties and of subs~antial thickness compared to -that of the film such as to provide structural reinforcement of the resultant laminate.
The plastics film may be commercially available plastics film provided with a solar control/energy saving coating and an a~hesive coating. The latter coating is 1~ preferably a pressure-sensitive adhesive although it may be of a type which is water activated before applying the film to the closely adjacent glass sheet. Such a plastics film is normally applied to the inner surface of a glass window, where it is susceptible to damage and prone to separation ~rom the glass. When positioned between two sheets of glass in accordance with the invention it is protected against damage, and the tendency for separation from the glass is overcome.
The plastics film is preferably a polyester-based ~0 ~ilm, desirably a stretched polyester film as sold under the trade mark "Melinex", with the two adhesive layers both being polyester-compatible adhesives. As already mentioned one adhesive layer is preferably provided by a pre-coated pressure-sensitive adhesive and the s~ructural, reinforcing ~5 adhesive layer is preferably a minimum two-component polyester-based resin with polyester-compatible adhesive properties and which can be applied to provide a layer of the desired thickness. Such a construction not only ~, ' . , ' . ':
-~2~
pro~ides a stable assembly, with complete protection of theplas~ics ~ilm, but the thicker structural layer of resin in combination with the plastics film provides a high-s-trength assembly which is highly resistant to penetration and to splintering.
According to a more limited aspect of the invention a laminar ~lass assembly comprises two sheets of annealed ~lass with A polyester-based plastics film disposed between them, the plastics film bein~ directly l~ adhered to one of the sheets of glass by a thin layer of polyester-compatible adhesive and being attached to the other sheet of glass by a synthetic resin layer having structural and polyester-compatible adhesive properties and which is of substantial thickness as compared with the thickness of said plastics film whereby to provide reinforcement of the resultant laminate.
Any suitable synthetic resin can be used for the thicker adhesive layer, the principal requirements being that it has structural properties and is compatible with the plastics film and does not break down and "yellow"
under sunlight. To prevent such yellowing a UV inhibitor may be mixed into the resin prior to application thereof.
In addition to the two-component polyester-based resin already referred to with a polyester-based plastics film, a ~5 cold-cure two-component polyurethane resin and a one-part UV cured acrylic resin have been found useful in practical realizations of the invention.
The plastics film may itself be a laminate of two plastics sheets with a solar control/energy saving layer 6~
between them. Such plastics films are commercially available with said layer being a metallized layer applied to one of the plastics sheets prior to lamination thereof, by a vacuum deposition or sputtering process. These films, employing polyester plastics sheets, have properties determined by the nature of the intermediate layer and its method of application. They are conveniently classified as either "low-E film" which has low emissivity and operates to retain heat within a building with which it is used, or l~ "solar control film" which operates to keep the heat from sunlight out of the building. Thus a low-E film is in general used in cooler climates, and a solar control film in the sunnier and warmer climates.
When the plastics film is a solar control/energy saving film, conveniently of bi-laminate form, under high-intensity sunlight a considerable temperature rise can occur within the assembly of the invention, particularly on the outex side of the film. Thus the assembly should be installed in a building with the thicker adhesive, or resin in-fill, layer on the inner side of the plastics film.
Furthermore, it is necessary to use a resin which is stable at the elevated temperatures involved, that is up to at least a temperature of the order of 100F and preferably up to a temperature of 120F.
According to another aspect of the invention, a laminar glass assembly comprises inner and outer sheets of annealed glass with a bi-laminate plastics film disposed between them, said film comprising two plastics laminae ~ith an intermediate metallized solar control/energy saving layer, the plastics film being adhered to said outer sheet ~f glass by a thin pre-coated adhesive layer and adhered to said inner sh~et of glass by a synthetic resin layer which is of substantial thickness as compared with the thickness of said plastics film and has structural properties whereby the assembl~ is reinforced by the synthetic resin layer, said resin bein~ compatible with the plastics film material and stable without tendency to yellow under sunliyht to a temperature at least of the order of 100F, and preferably to a temperature of 120F.
Although an assembly in accordance with the invention conveniently consists of the two sheets of glass, the plastics film and the intervening adhesive layers only, it may comprise three or more sheets of glass with a plastics film similarly disposed between each two adjacent glass sheets. This enables an assembly of extremely high strength to be achieved, for example for use in bandit and bullet proof glass constructions.
~ The glass sheets preferably have a thickness within the range of 2 to 12 mm, with the plastics film having a thickness in the range of 1 to 10 thousandths of an inch (0.025 to 0.254 mm) with the lower limit being 3 thousandths of an inch (0.076 mm) when strength is a major consideration. The thicker in-fill resin layer may have a thickness in the range of 0.1 to 6.0 mm.
The invention will now be further described with , ' ' ~
- - :
, .
, .
reference to the accompanying dia~rammatic ~xawings which illustrate, by way of example, a laminar glass assembly in accordance with the invention and a speci~ic embodiment thereof. In the drawings:
Fig. 1 illustrates the assembly in edge view; and Fig. 2 siMilarly illustrates the specific embodiment.
The assembly in accordance with the invention ~hich is illustrated in Fig. 1 comprises two sheets 1 and 2 of annealed glass between which is disposed a plastics film 3. The film 3 is directly adhered to the glass sheet 2 by a thin layer 4 of a resin adhesive, which is of negligible thickness so that the film 3 is effectively directly bonded to the glass sheet 2~ The film 3 is adhered to the glass sheet 1 through a thick layer of resin adhesive 5, the sheets 1 and 2 and the film 3 being disposed in paralle~
relationship.
For the film 3 a stretched polyester-based plastics is conveniently used, such as that sold under the trade mark "Melinex", and this may be pre-coated with a pressure-sensitive adhesive which provides the layer 4.
During manufacture the adhesive-coated surface o~ the film 3 is applied to and pressed against the glass sheet 2 with full surface contact, and use of the pre-coated plastics film 3 facilitates machine application to the glass sheet
The invention relates to laminar glass assemblies and is particularly, but by no means exclusively, concerned with such assemblies having solar control and/or energy saving properties.
Assemblies are known comprising a sheet of glass to one surface of which is adhered a plastics film having solar control and/or energy saving properties. Such a plastics film may have a metallized or otherwise applied coating which transmits incident sunlight according to the angle of incidence of the sun's rays, the film may provide an ultra-violet barrier, and the coating reflects heat back into the building in which the glass is used.
Assemblies are also known, commonly referred to as "laminated safety glass", which comprise a plastics sheet sandwiched between two sheets of annealed glass to provide strengthened anti-splinter glass for safety and anti-bandit purposes. Due to the use of annealed glass sheets this avoids the distortion which is obtained with ~ homogeneous "toughened" glass.
The object of the invention is to provide laminar glass assemblies providing improved solar control and/or energy saving and/or strength properties as compared with known assemblies.
According to one aspect of the invention, a laminar glass assembly comprises two sheets of glass with a plastics ~ilm disposed between them, the plastics film ~.~
being directly adhere~ to one of said glass sheets by a thin adhesive layer and to the other of said glass sheets by a layer of adhesive having structural properties and of subs~antial thickness compared to -that of the film such as to provide structural reinforcement of the resultant laminate.
The plastics film may be commercially available plastics film provided with a solar control/energy saving coating and an a~hesive coating. The latter coating is 1~ preferably a pressure-sensitive adhesive although it may be of a type which is water activated before applying the film to the closely adjacent glass sheet. Such a plastics film is normally applied to the inner surface of a glass window, where it is susceptible to damage and prone to separation ~rom the glass. When positioned between two sheets of glass in accordance with the invention it is protected against damage, and the tendency for separation from the glass is overcome.
The plastics film is preferably a polyester-based ~0 ~ilm, desirably a stretched polyester film as sold under the trade mark "Melinex", with the two adhesive layers both being polyester-compatible adhesives. As already mentioned one adhesive layer is preferably provided by a pre-coated pressure-sensitive adhesive and the s~ructural, reinforcing ~5 adhesive layer is preferably a minimum two-component polyester-based resin with polyester-compatible adhesive properties and which can be applied to provide a layer of the desired thickness. Such a construction not only ~, ' . , ' . ':
-~2~
pro~ides a stable assembly, with complete protection of theplas~ics ~ilm, but the thicker structural layer of resin in combination with the plastics film provides a high-s-trength assembly which is highly resistant to penetration and to splintering.
According to a more limited aspect of the invention a laminar ~lass assembly comprises two sheets of annealed ~lass with A polyester-based plastics film disposed between them, the plastics film bein~ directly l~ adhered to one of the sheets of glass by a thin layer of polyester-compatible adhesive and being attached to the other sheet of glass by a synthetic resin layer having structural and polyester-compatible adhesive properties and which is of substantial thickness as compared with the thickness of said plastics film whereby to provide reinforcement of the resultant laminate.
Any suitable synthetic resin can be used for the thicker adhesive layer, the principal requirements being that it has structural properties and is compatible with the plastics film and does not break down and "yellow"
under sunlight. To prevent such yellowing a UV inhibitor may be mixed into the resin prior to application thereof.
In addition to the two-component polyester-based resin already referred to with a polyester-based plastics film, a ~5 cold-cure two-component polyurethane resin and a one-part UV cured acrylic resin have been found useful in practical realizations of the invention.
The plastics film may itself be a laminate of two plastics sheets with a solar control/energy saving layer 6~
between them. Such plastics films are commercially available with said layer being a metallized layer applied to one of the plastics sheets prior to lamination thereof, by a vacuum deposition or sputtering process. These films, employing polyester plastics sheets, have properties determined by the nature of the intermediate layer and its method of application. They are conveniently classified as either "low-E film" which has low emissivity and operates to retain heat within a building with which it is used, or l~ "solar control film" which operates to keep the heat from sunlight out of the building. Thus a low-E film is in general used in cooler climates, and a solar control film in the sunnier and warmer climates.
When the plastics film is a solar control/energy saving film, conveniently of bi-laminate form, under high-intensity sunlight a considerable temperature rise can occur within the assembly of the invention, particularly on the outex side of the film. Thus the assembly should be installed in a building with the thicker adhesive, or resin in-fill, layer on the inner side of the plastics film.
Furthermore, it is necessary to use a resin which is stable at the elevated temperatures involved, that is up to at least a temperature of the order of 100F and preferably up to a temperature of 120F.
According to another aspect of the invention, a laminar glass assembly comprises inner and outer sheets of annealed glass with a bi-laminate plastics film disposed between them, said film comprising two plastics laminae ~ith an intermediate metallized solar control/energy saving layer, the plastics film being adhered to said outer sheet ~f glass by a thin pre-coated adhesive layer and adhered to said inner sh~et of glass by a synthetic resin layer which is of substantial thickness as compared with the thickness of said plastics film and has structural properties whereby the assembl~ is reinforced by the synthetic resin layer, said resin bein~ compatible with the plastics film material and stable without tendency to yellow under sunliyht to a temperature at least of the order of 100F, and preferably to a temperature of 120F.
Although an assembly in accordance with the invention conveniently consists of the two sheets of glass, the plastics film and the intervening adhesive layers only, it may comprise three or more sheets of glass with a plastics film similarly disposed between each two adjacent glass sheets. This enables an assembly of extremely high strength to be achieved, for example for use in bandit and bullet proof glass constructions.
~ The glass sheets preferably have a thickness within the range of 2 to 12 mm, with the plastics film having a thickness in the range of 1 to 10 thousandths of an inch (0.025 to 0.254 mm) with the lower limit being 3 thousandths of an inch (0.076 mm) when strength is a major consideration. The thicker in-fill resin layer may have a thickness in the range of 0.1 to 6.0 mm.
The invention will now be further described with , ' ' ~
- - :
, .
, .
reference to the accompanying dia~rammatic ~xawings which illustrate, by way of example, a laminar glass assembly in accordance with the invention and a speci~ic embodiment thereof. In the drawings:
Fig. 1 illustrates the assembly in edge view; and Fig. 2 siMilarly illustrates the specific embodiment.
The assembly in accordance with the invention ~hich is illustrated in Fig. 1 comprises two sheets 1 and 2 of annealed glass between which is disposed a plastics film 3. The film 3 is directly adhered to the glass sheet 2 by a thin layer 4 of a resin adhesive, which is of negligible thickness so that the film 3 is effectively directly bonded to the glass sheet 2~ The film 3 is adhered to the glass sheet 1 through a thick layer of resin adhesive 5, the sheets 1 and 2 and the film 3 being disposed in paralle~
relationship.
For the film 3 a stretched polyester-based plastics is conveniently used, such as that sold under the trade mark "Melinex", and this may be pre-coated with a pressure-sensitive adhesive which provides the layer 4.
During manufacture the adhesive-coated surface o~ the film 3 is applied to and pressed against the glass sheet 2 with full surface contact, and use of the pre-coated plastics film 3 facilitates machine application to the glass sheet
2. The layer 5, which is in-fill synthetic resin with i~
:
`: :
polyester~compatible adhesive properties and may be of a minimum two-component form, is now applied by pouring on to the film 3 which is disposed horizontally for this purpose, and the glass sheet 1 applied to the resin layer 5 to complete the assemblyO A cold-cure polyurethane resin has been found suitable in practice r as has a single-component (one part) acrylic resin which is cured by UV irradiation.
The resin used is stable under sunlight, in particular having no tendency to yellowing, and to this end 1~ ma~ contain a UV inhibitor. It is also stable in the sense that it will not run, break down or de-laminate during normal use of the assembly as a window panel installed in a building.
After the resin layer 5 has cured an extremely strong and structurally stable construction is obtained.
The resultant laminar assembly is resistant to penetration and splintering, due to the combination of the plastics film 3 with the thick resin layer 5 which provides reinforcement, and the assembly also provides a high degree of fire resistance. These properties are obtained whether or not the film 3 is a clear film.
However, the film 3 is preferably of known form with a sputtered or vacuum deposited metallized coating providing solar control and~or energy saving properties.
In this case the solar control/thermal reflection coating is completely protected within the assembly of the invention, with the use of a polyester-based film with polyester-compatible adhesives providing permanent adhesion a~ both surfaces of the ~ilm 3 so that film separation does not occur.
The ~lass sheets 1 and 2 have a thickness within ~he range o~ 2 to 12 mm, the plastics film 3 has a 5 thickness within the range of 1 to 10 thousandths of an inch (0.025 to 0.254 mm), and the resin layer S with polyester-compatible adhesive properties has a thickness within the range of 0.1 to 6.0 mm. If strength is not a major consideration a thinner plastics film 3 may be used, 1~ when the minimum thickness could be 1 thousandth of an inch (0.025 mm) or less.
In the specific embodiment of Fig. 2 the plastics film 3 is itself a bi-laminate a ~ragment of which is shown to a larger scale in inset view. This pre-laminated film 3 comprises two thin polyester sheets 3a and 3b with an intermediate solar control and/or energy saving metallic coating 3c which is applied to one of the sheets 3a and 3b prior to lamination thereof. The film 3 is of known form, being commercially available, with the coating 3c applied ~d by a sputtering or vacuum deposition process, being of a nature and application to provide the desired solar control and/or energy saving properties.
When the assembly has solar control properties an elevated internal temperature is produced under incident sunlight, particularly on the outer side of the film 3.
Thus the resin layer 5 is such as to be stable up to temperatures of the order of 100F, and preferably up to 120F and the assembly is installed in a building with the ~z~
glass sheet 2 towards the outside of the building.
:
:
, .
..
- . : ..
., .
, . ,; . ,
:
`: :
polyester~compatible adhesive properties and may be of a minimum two-component form, is now applied by pouring on to the film 3 which is disposed horizontally for this purpose, and the glass sheet 1 applied to the resin layer 5 to complete the assemblyO A cold-cure polyurethane resin has been found suitable in practice r as has a single-component (one part) acrylic resin which is cured by UV irradiation.
The resin used is stable under sunlight, in particular having no tendency to yellowing, and to this end 1~ ma~ contain a UV inhibitor. It is also stable in the sense that it will not run, break down or de-laminate during normal use of the assembly as a window panel installed in a building.
After the resin layer 5 has cured an extremely strong and structurally stable construction is obtained.
The resultant laminar assembly is resistant to penetration and splintering, due to the combination of the plastics film 3 with the thick resin layer 5 which provides reinforcement, and the assembly also provides a high degree of fire resistance. These properties are obtained whether or not the film 3 is a clear film.
However, the film 3 is preferably of known form with a sputtered or vacuum deposited metallized coating providing solar control and~or energy saving properties.
In this case the solar control/thermal reflection coating is completely protected within the assembly of the invention, with the use of a polyester-based film with polyester-compatible adhesives providing permanent adhesion a~ both surfaces of the ~ilm 3 so that film separation does not occur.
The ~lass sheets 1 and 2 have a thickness within ~he range o~ 2 to 12 mm, the plastics film 3 has a 5 thickness within the range of 1 to 10 thousandths of an inch (0.025 to 0.254 mm), and the resin layer S with polyester-compatible adhesive properties has a thickness within the range of 0.1 to 6.0 mm. If strength is not a major consideration a thinner plastics film 3 may be used, 1~ when the minimum thickness could be 1 thousandth of an inch (0.025 mm) or less.
In the specific embodiment of Fig. 2 the plastics film 3 is itself a bi-laminate a ~ragment of which is shown to a larger scale in inset view. This pre-laminated film 3 comprises two thin polyester sheets 3a and 3b with an intermediate solar control and/or energy saving metallic coating 3c which is applied to one of the sheets 3a and 3b prior to lamination thereof. The film 3 is of known form, being commercially available, with the coating 3c applied ~d by a sputtering or vacuum deposition process, being of a nature and application to provide the desired solar control and/or energy saving properties.
When the assembly has solar control properties an elevated internal temperature is produced under incident sunlight, particularly on the outer side of the film 3.
Thus the resin layer 5 is such as to be stable up to temperatures of the order of 100F, and preferably up to 120F and the assembly is installed in a building with the ~z~
glass sheet 2 towards the outside of the building.
:
:
, .
..
- . : ..
., .
, . ,; . ,
Claims (18)
1. A laminar glass assembly comprising two sheets of glass with a plastics film disposed between them, the plastics film being directly adhered to one of said glass sheets by a thin adhesive layer and to the other of said glass sheets by a layer of adhesive having structural properties and of substantial thickness compared to that of the film such as to provide structural reinforcement of the resultant laminate.
2. An assembly according to claim 1, wherein said plastics film has a solar control and/or energy saving coating and an adhesive coating on one side, both applied to the plastics film prior to incorporation in the assembly with the adhesive coating providing said direct adhesion of the film to said one glass sheet.
3. An assembly according to claim 2, wherein said adhesive coating comprises a pressure-sensitive adhesive.
4. An assembly according to claim 3, wherein said adhesive coating is of a type which is water activated before applying the film to said one glass sheet.
5. An assembly according to claim 1, wherein said plastics film is a polyester-based film with said two adhesive layers both comprising polyester-compatible adhesives.
6. An assembly according to claim 5, wherein said plastics film is a stretched polyester film.
7. An assembly according to any one of claims 1 to 3, wherein said plastics film is of polyester-based plastics material and said reinforcing adhesive layer is a minimum two-component polyester-based resin with polyester-compatible adhesive properties, and the other of said adhesive layers is provided by a pressure-sensitive adhesive with which the plastics film is pre-coated.
8. An assembly according to any one of claims 1 to 3, wherein said reinforcing adhesive layer is a synthetic resin mixed with a UV inhibitor.
9. An assembly according to any one of claims 1 to 3, wherein said reinforcing adhesive layer is a cold-cure polyurethane resin.
10. An assembly according to any one of claims 1 to 3, wherein said reinforcing adhesive layer is a one-part UV
cured acrylic resin.
cured acrylic resin.
11. A laminar glass assembly comprising two sheets of annealed glass with a polyester-based plastics film disposed between them, the plastics film being directly adhered to one of the sheets of glass by a thin layer of polyester-compatible adhesive and being attached to the other sheet of glass by a synthetic resin layer having structural and polyester-compatible adhesive properties and which is of substantial thickness as compared with the thickness of said plastics film whereby to provide reinforcement of the resultant laminate.
12. An assembly according to claim 11, wherein said plastics film is itself a laminate of two plastics sheet with a solar control and/or energy saving layer between them.
13. An assembly according to claim 12, wherein said solar control and/or energy saving layer is a metallized layer applied to one of said plastics sheets prior to lamination thereof.
14. An assembly according to claim 11, wherein said plastics film has solar control properties and said synthetic resin layer is stable up to a temperature at least of the order of 100°F (approx 38°C).
15. An assembly according to claim 14, wherein said synthetic resin layer is stable up to a temperature of 120°F.
16. A laminar glass assembly comprising inner and outer sheets of annealed glass with a bi-laminate plastics film disposed between them, said film comprising two plastics laminae with an intermediate metallized solar control/
energy saving layer, the plastics film being directly adhered to said outer sheet of glass by a thin pre-coated adhesive layer and adhered to said inner sheet of glass by a synthetic resin layer which is of substantial thickness as compared with the thickness of said plastics film and has structural properties whereby the assembly is reinforced by the synthetic resin layer, said resin being compatible with the plastics film material and stable without tendency to yellow under sunlight and up to a temperature at least of the order of 100°F (approx 38°C).
energy saving layer, the plastics film being directly adhered to said outer sheet of glass by a thin pre-coated adhesive layer and adhered to said inner sheet of glass by a synthetic resin layer which is of substantial thickness as compared with the thickness of said plastics film and has structural properties whereby the assembly is reinforced by the synthetic resin layer, said resin being compatible with the plastics film material and stable without tendency to yellow under sunlight and up to a temperature at least of the order of 100°F (approx 38°C).
17. An assembly according to claim 16, wherein said resin is stable up to a temperature of 120°F (approx 49°C).
18. An assembly according to claim 1, wherein said glass sheets have a thickness within the range of 2 to 12 mm, said plastics film has a thickness within the range of 1 to 10 thousandths of an inch (0.025 to 0.254 mm), and said one adhesive layer has a thickness within the range of 0.1 to 6.0 mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB848431713A GB8431713D0 (en) | 1984-12-15 | 1984-12-15 | Laminar glass assemblies |
| GB8431713 | 1984-12-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1269604A true CA1269604A (en) | 1990-05-29 |
Family
ID=10571252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000480008A Expired - Fee Related CA1269604A (en) | 1984-12-15 | 1985-04-24 | Laminar glass assemblies |
Country Status (3)
| Country | Link |
|---|---|
| CA (1) | CA1269604A (en) |
| GB (2) | GB8431713D0 (en) |
| ZA (1) | ZA859388B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1138619A (en) * | 1965-05-06 | 1969-01-01 | Triplex Safety Glass Co | Improvements in or relating to laminated transparent assemblies |
| DE1596896A1 (en) * | 1965-10-11 | 1971-03-25 | Mobay Chemical Corp | Process for the production of curved composite panes |
| GB1193066A (en) * | 1966-07-15 | 1970-05-28 | English Electric Co Ltd | Attack-Resistant Laminated Structures. |
-
1984
- 1984-12-15 GB GB848431713A patent/GB8431713D0/en active Pending
-
1985
- 1985-04-18 GB GB08510008A patent/GB2168288B/en not_active Expired
- 1985-04-24 CA CA000480008A patent/CA1269604A/en not_active Expired - Fee Related
- 1985-12-09 ZA ZA859388A patent/ZA859388B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB8510008D0 (en) | 1985-05-30 |
| GB2168288A (en) | 1986-06-18 |
| GB8431713D0 (en) | 1985-01-30 |
| GB2168288B (en) | 1988-11-02 |
| ZA859388B (en) | 1986-09-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |