WO2006087386A1 - Spandrel - Google Patents

Spandrel Download PDF

Info

Publication number
WO2006087386A1
WO2006087386A1 PCT/EP2006/060112 EP2006060112W WO2006087386A1 WO 2006087386 A1 WO2006087386 A1 WO 2006087386A1 EP 2006060112 W EP2006060112 W EP 2006060112W WO 2006087386 A1 WO2006087386 A1 WO 2006087386A1
Authority
WO
WIPO (PCT)
Prior art keywords
glass
sheet
spandrel
range
light transmission
Prior art date
Application number
PCT/EP2006/060112
Other languages
French (fr)
Inventor
Jean-Marie Sellier
Original Assignee
Glaverbel
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Glaverbel filed Critical Glaverbel
Priority to EP06708394A priority Critical patent/EP1851409A1/en
Publication of WO2006087386A1 publication Critical patent/WO2006087386A1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/67—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light
    • E06B3/6715—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light specially adapted for increased thermal insulation or for controlled passage of light

Definitions

  • This invention relates to spandrels.
  • Spandrels traditionally comprise a glass sheet to which an enamel based paint layer has been fired so as to render the glass opaque. They may be used to visually match or contrast in external appearance with vision glazing panels in a building's facade and are generally used to conceal portions of a building's structure that it is desirable to hide from the outside.
  • the present invention provides a glazing panel in accordance with claim 1.
  • Other aspects are defined in the other independent claims.
  • the dependent claims define preferred or alternative embodiments.
  • Matched external appearance to vision glazings in a building facade for example where an external sheet of glass of the vision glazing has a similar level and/or colour in reflection, in particular when the external glass sheets of the vision glazing and of the spandrel are provided with the same or with comparable optical coatings ;
  • the spandrels of the invention do not require the use of a completely opaque sheet as has generally been thought necessary in the past but allow for the use of a sheet having a sufficiently low light transmission, for example, a coloured glass sheet, which may carry an optical coating, rather than an enamelled glass sheet.
  • a sheet having a sufficiently low light transmission for example, a coloured glass sheet, which may carry an optical coating, rather than an enamelled glass sheet.
  • the desired effect is achieved provided that the defined levels of light transmission are respected.
  • the light transmission levels defined herein are expressed using illuminant C at 2° observer.
  • ⁇ greater than or equal to 0.2%, preferably greater than or equal to 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9% or 1% ;
  • ⁇ less than or equal to 5% preferably less than or equal to 3%, 2.5%, 2.2%, 2%, 1.8%, 1.6%, 1,5%, 1,4%, 1;2% or 1%
  • the light transmission of the spandrel be 1.5% or less as this level has been determined to provide good spandrel characteristics; reducing the light transmission of the spandrel below 1.5% is possible but the improvement in visual appearance is slight.
  • the desired light transmission of the spandrel may be provided by the combination of the two glass sheets.
  • the first glass sheet has a relatively high light transmission, for example in the range 65% to 75% or indeed higher, it is necessary to use a second glass sheet having a very low light transmission to achieve the desired overall light transmission.
  • the first glass sheet has a lower light transmission, for example in the range 35% to 65%, it may be possible to achieve the desired overall light transmission using a second glass sheet having a higher light transmission.
  • a second glass sheet having the defined levels of light transmission may be used to provide spandrels as such levels of light transmission are attainable with body tinted glasses, particularly body tinted grey glasses.
  • the desired light transmission of the second glass sheet may be provided by an optical coating, preferably by the combination of an optical coating and a body tinted glass, particularly a body tinted grey glass. This may be more economical than achieving the desired level of light transmission using a glass sheet that consists of a body tinted glass or which consists of a clear, coated glass.
  • the coating on the second glass sheet may be arranged at position 3 but is preferably arranged at position 4 of the assembled spandrel.
  • a light absorbing coating When a light absorbing coating is present, it is preferably a temperable coating; this may facilitate processing.
  • the spandrels are particularly adapted for use in double glazing configurations where the first sheet of glass carries an optical coating, for example a solar control coating layer which may be arranged at position two of the glazing i.e. at the inside surface of the external glass sheet.
  • the light reflectance of the first sheet of glass may be in the range 8% to 20%, preferably 10% to 18%.
  • the spandrels may be used to hide structural elements of a building and/or to provide privacy glazing. They are particularly adapted to provide a matching appearance to adjacent vision glazing but may be used to provide a contrasting external appearance.
  • the difference in reflected colour measured on the CIE lab scale between the vision glazing and the associated spandrel as measured from the external side of the glazing and from the external side of the spandrel is preferably such that the difference in a* is less than or equal to 1.2, more preferably less than or equal to 1, 0.5, or 0.3 and the difference in b* is less than or equal to 2.2, more preferably less than or equal to 2, 1.5, 1 or 0.5.
  • the difference in reflected colour measured on the CIE lab scale between the vision glazing and the associated spandrel as measured from the external side of the glazing and from the external side of the spandrel is preferably such that the difference in a* is less than or equal to 1, more preferably less than or equal to 1, 0.8, or 0.5 and the difference in b* is less than or equal to 1.5, more preferably less than or equal to 1 or 0.5
  • a body tinted glass carrying a light absorbing coating may be used as a spandrel in a monolithic configuration.
  • the light absorbing coating is preferably arranged at position 2.
  • An insulating material may be secured or adhered to the rear of the spandrel.
  • FIG 1 is a front view of part of the external glazing of a building ;
  • FIG 2 which is a cross section (not to scale) taken along line 2-2 of FIG 1.
  • the external facade of a building comprises an arrangement of horizontal vision glazings 11 and horizontal spandrels 12.
  • both the spandrels and the vision glazing are assembled as double glazing units using the same coated glass sheets as the external sheets with the spandrels 12 providing a matching appearance to the vision glazings 12.
  • the spandrel 12 of Fig 2 has an outer, first glass sheet 21 assembled with an inner, second glass sheet 22 by means of a peripheral spacer 23 and a peripheral elastomeric seal 24.
  • the first glass sheet 21 is a clear sheet of soda lime float glass having a reflective, coating 25 arranged at position 2.
  • Second glass sheet 22 is a body tinted grey soda lime float glass carrying a light absorbing coating 26 arranged at position 4.
  • the following table shows various configurations for the first and second glass sheets of the spandrel, not all of which are in accordance with the invention. Each example uses a different coated glass for the first glass sheet.
  • spandrels having a light transmission in the range 0.6 to 1.5% were found to present extremely good characteristics, even when used in unfavourable lighting conditions that would tend to show the weakness of the spandrels and/or when a background with a high level of contrast was arranged behind the spandrels.
  • Those having a light transmission between 1.5 and 1.9% were found to provide an acceptable performance other than in particularly unfavourable lighting conditions.
  • Those having a light transmission greater than 1.9% and less than 5% were found to provide acceptable performance in some but not all lighting conditions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

A spandrel comprises a first sheet of glass, a second sheet of glass spaced from and arranged substantially parallel to the first sheet of glass, a seal extending around the periphery of and joining the first and second sheets of glass, the combination of the seal and the sheets of glass enclosing a gas containing space between the two sheets of glass. The light transmission of the spandrel is within the range of 0.2 % to 5%.

Description

SPANDREL
This invention relates to spandrels.
Spandrels traditionally comprise a glass sheet to which an enamel based paint layer has been fired so as to render the glass opaque. They may be used to visually match or contrast in external appearance with vision glazing panels in a building's facade and are generally used to conceal portions of a building's structure that it is desirable to hide from the outside.
According to a first aspect, the present invention provides a glazing panel in accordance with claim 1. Other aspects are defined in the other independent claims. The dependent claims define preferred or alternative embodiments.
Use of a low light transmission glass as the second sheet of glass in a double glazed unit (rather than an opaque fired enamel glass commonly used in prior art configurations) may present one or more of the following advantages :
■ An aesthetically pleasing visual external appearance, particularly a sharpness and lack of diffusion of the image reflected from the spandrel when compared with traditional enamel spandrels
■ Matched external appearance to vision glazings in a building facade, for example where an external sheet of glass of the vision glazing has a similar level and/or colour in reflection, in particular when the external glass sheets of the vision glazing and of the spandrel are provided with the same or with comparable optical coatings ;
■ A sufficiently low level of light transmittance from the exterior and/or interior to permit use as a spandrel ; ■ Ease of stock and manufacture as the seconds glass sheet may be cut and processed by the assembler from sheet size rather than requiring the logistics and delay often associated with ordering cut size enamel spandrels.
The spandrels of the invention do not require the use of a completely opaque sheet as has generally been thought necessary in the past but allow for the use of a sheet having a sufficiently low light transmission, for example, a coloured glass sheet, which may carry an optical coating, rather than an enamelled glass sheet. The desired effect is achieved provided that the defined levels of light transmission are respected.
The light transmission levels defined herein are expressed using illuminant C at 2° observer.
Arranging the light transmission of the spandrel to be
■ greater than or equal to 0.2%, preferably greater than or equal to 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9% or 1% ; and
■ less than or equal to 5%, preferably less than or equal to 3%, 2.5%, 2.2%, 2%, 1.8%, 1.6%, 1,5%, 1,4%, 1;2% or 1%
allows for use of a glass sheet that provides the desired effect of the spandrel without requiring complete opacity.
It is preferred that the light transmission of the spandrel be 1.5% or less as this level has been determined to provide good spandrel characteristics; reducing the light transmission of the spandrel below 1.5% is possible but the improvement in visual appearance is slight.
When arranged in a double glazing configuration, the desired light transmission of the spandrel may be provided by the combination of the two glass sheets. When the first glass sheet has a relatively high light transmission, for example in the range 65% to 75% or indeed higher, it is necessary to use a second glass sheet having a very low light transmission to achieve the desired overall light transmission. When the first glass sheet has a lower light transmission, for example in the range 35% to 65%, it may be possible to achieve the desired overall light transmission using a second glass sheet having a higher light transmission. However, it may be advantageous to select a second glass sheet having a sufficiently low level of light transmission to enable it to be used over a desired range of spandrels and to use this second glass sheet even in configurations in which a higher light transmission would provide an acceptable visual appearance. Such a practice may facilitate stock management and product standardisation.
It is particularly surprising that the use of a second glass sheet having the defined levels of light transmission may be used to provide spandrels as such levels of light transmission are attainable with body tinted glasses, particularly body tinted grey glasses.
The desired light transmission of the second glass sheet may be provided by an optical coating, preferably by the combination of an optical coating and a body tinted glass, particularly a body tinted grey glass. This may be more economical than achieving the desired level of light transmission using a glass sheet that consists of a body tinted glass or which consists of a clear, coated glass. The coating on the second glass sheet may be arranged at position 3 but is preferably arranged at position 4 of the assembled spandrel.
When a light absorbing coating is present, it is preferably a temperable coating; this may facilitate processing.
The spandrels are particularly adapted for use in double glazing configurations where the first sheet of glass carries an optical coating, for example a solar control coating layer which may be arranged at position two of the glazing i.e. at the inside surface of the external glass sheet. The light reflectance of the first sheet of glass may be in the range 8% to 20%, preferably 10% to 18%.
The spandrels may be used to hide structural elements of a building and/or to provide privacy glazing. They are particularly adapted to provide a matching appearance to adjacent vision glazing but may be used to provide a contrasting external appearance. When providing a matching appearance, the difference in reflected colour measured on the CIE lab scale between the vision glazing and the associated spandrel as measured from the external side of the glazing and from the external side of the spandrel is preferably such that the difference in a* is less than or equal to 1.2, more preferably less than or equal to 1, 0.5, or 0.3 and the difference in b* is less than or equal to 2.2, more preferably less than or equal to 2, 1.5, 1 or 0.5. When the first glass sheet has a light transmission of less than or equal to 60%, the difference in reflected colour measured on the CIE lab scale between the vision glazing and the associated spandrel as measured from the external side of the glazing and from the external side of the spandrel is preferably such that the difference in a* is less than or equal to 1, more preferably less than or equal to 1, 0.8, or 0.5 and the difference in b* is less than or equal to 1.5, more preferably less than or equal to 1 or 0.5
In an alternative configuration, a body tinted glass carrying a light absorbing coating may be used as a spandrel in a monolithic configuration. In this case, the light absorbing coating is preferably arranged at position 2. An insulating material may be secured or adhered to the rear of the spandrel.
An embodiment of the invention will now be described, by way of example only, with reference to FIG 1 which is a front view of part of the external glazing of a building ; and
FIG 2 which is a cross section (not to scale) taken along line 2-2 of FIG 1. The external facade of a building comprises an arrangement of horizontal vision glazings 11 and horizontal spandrels 12. In this example, both the spandrels and the vision glazing are assembled as double glazing units using the same coated glass sheets as the external sheets with the spandrels 12 providing a matching appearance to the vision glazings 12.
The spandrel 12 of Fig 2 has an outer, first glass sheet 21 assembled with an inner, second glass sheet 22 by means of a peripheral spacer 23 and a peripheral elastomeric seal 24. The first glass sheet 21 is a clear sheet of soda lime float glass having a reflective, coating 25 arranged at position 2. Second glass sheet 22 is a body tinted grey soda lime float glass carrying a light absorbing coating 26 arranged at position 4.
The following table shows various configurations for the first and second glass sheets of the spandrel, not all of which are in accordance with the invention. Each example uses a different coated glass for the first glass sheet.
Figure imgf000007_0001
Figure imgf000008_0001
Figure imgf000009_0001
The examples of spandrels having a light transmission in the range 0.6 to 1.5% were found to present extremely good characteristics, even when used in unfavourable lighting conditions that would tend to show the weakness of the spandrels and/or when a background with a high level of contrast was arranged behind the spandrels. Those having a light transmission between 1.5 and 1.9% were found to provide an acceptable performance other than in particularly unfavourable lighting conditions. Those having a light transmission greater than 1.9% and less than 5% were found to provide acceptable performance in some but not all lighting conditions.

Claims

1. A spandrel comprising a first sheet of glass ; a second sheet of glass spaced from and arranged substantially parallel to the first sheet of glass; a seal extending around the periphery of and joining the first and second sheets of glass, the combination of the seal and the sheets of glass enclosing a gas containing space between the two sheets of glass ; characterised in that the light transmission of the spandrel is within the range of 0.2 % to 5%.
2. A spandrel in accordance with claim 1, in which the light transmission of the spandrel is within the range of 0.4 % to 2.2%.
3. A spandrel in accordance with any preceding claim, in which the light transmission of the spandrel is within the range of 0.4 % to 1.8%.
4. A spandrel in accordance with any preceding claim, in which the light transmission of the second glass sheet is within the range of 0.4 % to 5%.
5. A spandrel in accordance with any preceding claim, in which the light transmission of the second glass sheet is within the range of 0.4 % to 2.5%, preferably within the range of 1 % to 2%, more preferably within the range of 1.2 % to 1.6%.
6. A spandrel in accordance with any preceding claim, in which the second glass sheet comprises a sheet of body tinted glass having a grey colour in reflection and in transmission and having a light transmission of less than 10% at a thickness of 6mm.
7. A spandrel in accordance with any preceding claim, in which the second glass sheet consists essentially of a coloured glass sheet carrying an optical coating, the optical coating being such that applied to a 6mm thick sheet of clear soda lime float glass, it would give a light transmission in the range 25-70%, preferably 25 to 45%, more preferably 30 to 45%.
8. A spandrel in accordance with any preceding claim, in which the second glass sheet consists essentially of a coloured glass sheet carrying a pyrolytic, light absorbing coating.
9. A spandrel in accordance with any preceding claim, in which the second sheet of glass has a thickness in the range 5.5 to 6.5mm.
10. A spandrel in accordance with any preceding claim, in which the second sheet of glass has a thickness in the range 6.5 to 8.5mm.
11. A spandrel in accordance with any preceding claim, in which the first sheet of glass has a light transmission within the range 20% to 55% and comprises an optical coating and in which the second glass sheet consists essentially of a sheet of coloured glass having a thickness in the range 7.5mm to 12.5mm.
12. A spandrel in accordance with any one of claims 1 to 10, in which the first sheet of glass has a light transmission within the range 55% to 75% and comprises an optical coating and in which the second glass sheet consist essentially of a sheet of coloured glass having a thickness in the range 7.5mm to 12.5mm carrying a light absorbing optical coating.
13. Use of a sheet of coloured glass carrying a light absorbing coating and having a light transmission in the range 0.3 to 3% as the second sheet of glass in a range of spandrels, the range of spandrels comprising a first spandrel comprising a first sheet of glass having a light transmission in the range 55% to 75% and a second spandrel comprising a first sheet of glass having a light transmission in the range 35% to 55%.
14. A spandrel comprising a sheet of body tinted glass carrying a light absorbing coating and having a light transmission in the range 0.2 to 2%.
15. A spandrel comprising a sheet of coloured glass carrying a light absorbing coating and having a light transmission in the range 0.4 to 1.8%.
16. A spandrel in accordance with claim 14 or claim 15, in which the spandrel consists essentially of the sheet of body tinted glass carrying the light absorbing layer.
17. A spandrel in accordance with claim 16, in which the sheet of glass has a thickness in the range 7.5 to 8.5mm.
PCT/EP2006/060112 2005-02-21 2006-02-20 Spandrel WO2006087386A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06708394A EP1851409A1 (en) 2005-02-21 2006-02-20 Spandrel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05101296 2005-02-21
EP05101296.1 2005-02-21

Publications (1)

Publication Number Publication Date
WO2006087386A1 true WO2006087386A1 (en) 2006-08-24

Family

ID=34938773

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/060112 WO2006087386A1 (en) 2005-02-21 2006-02-20 Spandrel

Country Status (3)

Country Link
EP (1) EP1851409A1 (en)
RU (1) RU2423327C2 (en)
WO (1) WO2006087386A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2517877A2 (en) 2011-04-08 2012-10-31 Pilkington Deutschland AG Spandrel panel

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4822680A (en) * 1987-08-28 1989-04-18 American Temporing, Inc. Polyurethane visionary laminate glass and method of manufacture
EP0349909A1 (en) * 1988-07-05 1990-01-10 Ppg Industries, Inc. Dark, neutral gray, nickel-free glass composition
EP0705800A1 (en) * 1994-10-05 1996-04-10 Asahi Glass Company Ltd. Deep gray colored glass
US20040202803A1 (en) * 2003-04-14 2004-10-14 Pilkington North America, Inc. Spandrel panel with low visible light transmittance pane

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4822680A (en) * 1987-08-28 1989-04-18 American Temporing, Inc. Polyurethane visionary laminate glass and method of manufacture
EP0349909A1 (en) * 1988-07-05 1990-01-10 Ppg Industries, Inc. Dark, neutral gray, nickel-free glass composition
EP0705800A1 (en) * 1994-10-05 1996-04-10 Asahi Glass Company Ltd. Deep gray colored glass
US20040202803A1 (en) * 2003-04-14 2004-10-14 Pilkington North America, Inc. Spandrel panel with low visible light transmittance pane

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2517877A2 (en) 2011-04-08 2012-10-31 Pilkington Deutschland AG Spandrel panel

Also Published As

Publication number Publication date
RU2423327C2 (en) 2011-07-10
RU2007134962A (en) 2009-03-27
EP1851409A1 (en) 2007-11-07

Similar Documents

Publication Publication Date Title
US4610115A (en) Multiple-glazed combination vision and spandrel architectural panel and curtainwall
US5948538A (en) Glazing assembly comprising a substrate provided with a stack of thin layers for solar protection and/or thermal insulation
FI120038B (en) Glass substrate with anti-reflective coating
CN107709263B (en) Substrate provided with a stack having thermal properties
US3951525A (en) Heat and light reflecting spandrel
EP3439873B1 (en) Light emitting diode display and insulated glass unit including the same
JP2016539894A (en) Laminated glass having at least one chemically strengthened glass
JPS6337698B2 (en)
EA035302B1 (en) Laminated glazing
US4487197A (en) Solar control panel
US5059458A (en) Glazing units
CA2505696C (en) Heat treatable coated article with reduced color shift at high viewing angles
US20050000174A1 (en) Window assembly
US20040202803A1 (en) Spandrel panel with low visible light transmittance pane
US10377664B2 (en) Coated glass article, display assembly made therewith and method of making a display assembly
EP2517877B1 (en) Spandrel panel
EP1851409A1 (en) Spandrel
WO1998034883A1 (en) Improvements relating to solar control glass and glazing
DE102015006644B4 (en) Laminated pane for protective glazing and its use, picture glazing and display glazing
US7947373B2 (en) High luminance coated glass
GB2097456A (en) Double glazing panel
KR102313738B1 (en) Double layed glass window with ceramic coating
GB2095738A (en) Hollow glazing panels
US11531148B2 (en) Optical coatings for glass and glass laminates
FI98441C (en) Stained glass element

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2006708394

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2007134962

Country of ref document: RU

WWP Wipo information: published in national office

Ref document number: 2006708394

Country of ref document: EP