WO2008046877A2 - Feuille de verre mate - Google Patents

Feuille de verre mate Download PDF

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Publication number
WO2008046877A2
WO2008046877A2 PCT/EP2007/061126 EP2007061126W WO2008046877A2 WO 2008046877 A2 WO2008046877 A2 WO 2008046877A2 EP 2007061126 W EP2007061126 W EP 2007061126W WO 2008046877 A2 WO2008046877 A2 WO 2008046877A2
Authority
WO
WIPO (PCT)
Prior art keywords
glass sheet
acid
less
etched
glass
Prior art date
Application number
PCT/EP2007/061126
Other languages
English (en)
Other versions
WO2008046877A3 (fr
Inventor
Georges Pilloy
Petr Hennebichler
Nadia Jacobs
Original Assignee
Agc Flat Glass Europe Sa
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 Agc Flat Glass Europe Sa filed Critical Agc Flat Glass Europe Sa
Priority to EP07821491A priority Critical patent/EP2074072A2/fr
Publication of WO2008046877A2 publication Critical patent/WO2008046877A2/fr
Publication of WO2008046877A3 publication Critical patent/WO2008046877A3/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C15/00—Surface treatment of glass, not in the form of fibres or filaments, by etching
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2204/00—Glasses, glazes or enamels with special properties
    • C03C2204/08—Glass having a rough surface

Definitions

  • the present invention relates to matt glass sheets, in particular acid- etched glass sheets, and to such glass sheets that may be used as floor covering.
  • matt glass sheets we mean herein translucent glass sheets with a satin finish which diffuse light and may assure privacy.
  • “Matt glass sheets” may preferably show at least one of the following properties: a luminous transmittance (LT) value of less than 90%, a haze value of more than 90% and/or a clarity value of less than 20% (all these values being measured on the acid -etched face of a clear glass sheet of 8 mm-thick).
  • LT luminous transmittance
  • Glass sheets according to this invention may have particular advantage for use as floor covering or for staircase steps, due to their anti-slip properties, in exterior and interior applications. They may also be used for example for decorative purpose, in furniture, wardrobes, in tables, shelves, in bathrooms or in shops displays.
  • EP 937 689 A1 describes an alternative which consists in making holes in the glass and fill them in with a resin comprising grains of a hard material.
  • matt acid-etched glass sheets are known, which may be used for floor applications. They are aesthetically pleasant and have the advantage, compare to clear glass, that what is under the flooring, e.g. concrete, is not visible.
  • acid -etched glass sheets may be produced by controlled acid attack, during between 30 seconds and 15 minutes (depending on the acid solution used), on a surface of a pre-formed glass sheet.
  • the acid attack produces a degree of surface roughness on the treated glass surface which results in reduced spectral reflection (due to greater diffusion of reflected light) and a fine matt appearance.
  • This very fine surface roughness may be characterised by the combination of a Rz around 1 1 - 13 ⁇ m and a Rz/RSm around 0.14 - 0.17.
  • RSm may vary between 60 and 100 ⁇ m.
  • Rz and RSm are typical measures of surface roughness; the way to measure those values is explained hereunder.
  • the present invention provides a glass sheet as defined by claim 1 .
  • Dependent claims define preferred and/or alternative aspects of the invention.
  • the acid -etched surfaces of glass sheets according to the invention have a surface roughness defined by:
  • Rz greater than 12, preferably greater than 14, more preferably greater than 16 and less than 22, preferably less than 20, and
  • Rz/RSm greater than 0.18, greater than 0.20, preferably greater than 0.21 , more preferably greater than 0.22 and less than 0.30, preferably less than 0.28, more preferably less than 0.26.
  • Cut-off "use the whole selected data length"
  • the present invention has particular advantages in relation to flooring or staircase steps, nevertheless it may also be used on shelves or shop displays, for example, on which the objects can not slip.
  • only one face of the glass sheet may have a roughness in the range of the present invention.
  • both faces of the glass sheet may be acid -etched.
  • Glass sheets according to the invention may show RSm greater than 65, preferably greater than 70, more preferably greater than 72 ⁇ m and less than 90, preferably less than 85, more preferably less than 80 ⁇ m.
  • glass sheets according to the invention when tested according to standard DIN 51130:2004-6, show anti-slip properties ranging from R9 to R11 ; preferably, they reach R11.
  • R9, RI O and R11 are examples of applications for R9, RI O and R11 :
  • Glass sheets according to the invention may preferably have L* (defined in the CIE L*a*b* system, for a clear glass sheet of 8 mm-thick, and measured on the acid-etched face of the glass sheet with a MINOLTA CM-2600d apparatus, with the following measurement parameters: illuminant C, 10° , SCI, white tile as background) of less than 72%, preferably less than 70%, more preferably less than 68%, and greater than 60%, preferably greater than 63%, more preferably greater than 65%. These values have to be compared with a conventional acid -etched glass which shows a L* value of around 73%. This lower L* value for the present ant-slip glass sheets may be explained by the change in roughness of the acid -etched surface.
  • L* defined in the CIE L*a*b* system, for a clear glass sheet of 8 mm-thick, and measured on the acid-etched face of the glass sheet with a MINOLTA CM-2600d apparatus, with the following measurement parameters:
  • Glass sheets according to the invention may preferably have at least one of the following properties: a luminous transmittance (LT) value of less than 90%, preferably less than 89% and greater than 84%, preferably greater than 86%, a haze value greater than 90%, preferably greater than 95%, more preferably greater than 98%, and a clarity value of less than 20% , preferably less than 10%, more preferably less than 7%, still more preferably less than 5%, and greater than 2%, preferably greater than 3%, more preferably greater than 4%, all these values being measured on the acid-etched face of a clear glass sheet of 8 mm-thick.
  • LT luminous transmittance
  • Clarity is a measure of the light that is scattered at small angles when passing through a glass sheet; haze is a measure of the light that is scattered at greater angles when passing through a glass sheet. All the measurements of haze and clarity referred to herein where made on a HAZE-GARD PLUS apparatus conform to the standard ASTM D-1003.
  • the glass substrate used may be float glass of various thicknesses (between 1 .8 and 16.2 mm, for example). A thickness greater than 6 mm is preferred for floor applications.
  • the glass sheet may be tempered and/or laminated; for shelves or displays it may be tempered.
  • the present invention provides a floor covering as defined by claim 9 and a method, as defined in claim 10, for manufacturing glass sheets according to the invention.
  • Acid -etched glass sheets according to the invention may advantageously be produced by controlled acid attack, using well-known acid-etching solutions commonly used in the manufacture of conventional acid-etched glass, during more than 5 minutes, preferably between 10 and 30 min (depending on the acid solution used) on a surface of a pre-formed glass sheet.
  • the acid attack produces a degree of surface roughness on the treated glass surface, a texturing which results in anti-slip properties.
  • the acid attack may be made in one or several steps.
  • a sheet of clear float glass 8 mm-thick is acid-etched in a known manner, but during a longer time than for conventional acid-etched glass. In this case the duration of the acid attack was 25 minutes.
  • the roughness of glass sheet was then measured by a Taylor- Hobson Talysurf analysis of surface roughness, as commonly used for analysing surface roughness.
  • the analysis consists of arranging a fine stylus having a calibrated point in contact with the surface to be analysed and slowly displacing the stylus across the surface so as to record all variations in the altitude of the surface. The parameters cited above were used to carry out this analysis.
  • Rz (also called Rtm) is the average of all of the values Rz1 , Rz2 .... etc. over the entire profile Rz1 is the greatest difference in altitude between the highest peak and the lowest valley over the first cut-off portion of the sample
  • Rz2 is the greatest difference in altitude between the highest peak and the lowest valley over the second cut-off portion of the sample (and so on for Rz3)
  • RSm also called Sm
  • Sm is the average of the distance between each time the profile crosses the average line; it represents an indication of the average distance between the main peaks of the profile.
  • the short range filter and long range filter are used to separate a characteristic measurement of surface roughness from an overall "waviness" of the sample and from very short wavelength effects.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Surface Treatment Of Glass (AREA)
  • Laminated Bodies (AREA)

Abstract

Selon l'invention, des feuilles de verre mates, attaquées par un acide, présentent une surface attaquée par un acide dont la rugosité de surface est définie par : Rz supérieur à 12 et inférieur à 22, et Rz/RSm supérieur à 0,18 et inférieur à 0,30, mesurée sur une longueur d'échantillon de 20 mm avec une coupure utilisant toute la longueur de données sélectionnées, un filtre à faible portée de 0,008 mm et un filtre à longue portée de 0,8 mm. De telles feuilles de verre peuvent présenter des propriétés antidérapantes et servir avantageusement de revêtement de sol.
PCT/EP2007/061126 2006-10-18 2007-10-18 Feuille de verre mate WO2008046877A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07821491A EP2074072A2 (fr) 2006-10-18 2007-10-18 Feuille de verre mate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06122490 2006-10-18
EP06122490.3 2006-10-18

Publications (2)

Publication Number Publication Date
WO2008046877A2 true WO2008046877A2 (fr) 2008-04-24
WO2008046877A3 WO2008046877A3 (fr) 2008-06-12

Family

ID=37814236

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/061126 WO2008046877A2 (fr) 2006-10-18 2007-10-18 Feuille de verre mate

Country Status (2)

Country Link
EP (1) EP2074072A2 (fr)
WO (1) WO2008046877A2 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2287120A1 (fr) * 2009-07-16 2011-02-23 AGC Glass Europe Article de verre décoratif
WO2011036155A3 (fr) * 2009-09-25 2012-01-19 Agc Glass Europe Article de décoration en verre
WO2013013900A1 (fr) 2011-07-28 2013-01-31 Agc Glass Europe Procede de fabrication d'une feuille de verre antiderapante
WO2013079263A1 (fr) 2011-11-29 2013-06-06 Agc Glass Europe Plaque de verre présentant des propriétés non glissantes
WO2014012809A1 (fr) * 2012-07-18 2014-01-23 Agc Glass Europe Feuille de verre dépolie
RU2635312C2 (ru) * 2011-06-30 2017-11-10 Гардиан Индастриз Корп. Способ изготовления термически обработанного и подвергнутого травлению/фрезерованию ионным пучком покрытого изделия с использованием защитной пленки из алмазоподобного углерода (dlc)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6553788B1 (en) * 1999-02-23 2003-04-29 Nippon Sheet Glass Co., Ltd. Glass substrate for magnetic disk and method for manufacturing
DE20207373U1 (de) * 2002-05-10 2003-06-12 Toepfer Ct Essen Gmbh Chemische Zusammensetzung zur Oberflächenbehandlung
US20030170459A1 (en) * 2002-03-05 2003-09-11 Zuel Company, Inc. Anti-reflective glass surface with improved cleanability

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5014717A (fr) * 1973-06-08 1975-02-17

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6553788B1 (en) * 1999-02-23 2003-04-29 Nippon Sheet Glass Co., Ltd. Glass substrate for magnetic disk and method for manufacturing
US20030170459A1 (en) * 2002-03-05 2003-09-11 Zuel Company, Inc. Anti-reflective glass surface with improved cleanability
DE20207373U1 (de) * 2002-05-10 2003-06-12 Toepfer Ct Essen Gmbh Chemische Zusammensetzung zur Oberflächenbehandlung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 197629 Derwent Publications Ltd., London, GB; AN 1976-54716X XP002424506 & JP 50 014717 A (MATSUSHITA ELECTRIC WORKS LTD) 17 February 1975 (1975-02-17) *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2287120A1 (fr) * 2009-07-16 2011-02-23 AGC Glass Europe Article de verre décoratif
WO2011006883A3 (fr) * 2009-07-16 2011-06-23 Agc Glass Europe Article de décoration en verre
WO2011036155A3 (fr) * 2009-09-25 2012-01-19 Agc Glass Europe Article de décoration en verre
RU2635312C2 (ru) * 2011-06-30 2017-11-10 Гардиан Индастриз Корп. Способ изготовления термически обработанного и подвергнутого травлению/фрезерованию ионным пучком покрытого изделия с использованием защитной пленки из алмазоподобного углерода (dlc)
WO2013013900A1 (fr) 2011-07-28 2013-01-31 Agc Glass Europe Procede de fabrication d'une feuille de verre antiderapante
BE1020126A3 (fr) * 2011-07-28 2013-05-07 Agc Glass Europe Procede de fabrication d'une feuille de verre antiderapante.
JP2014523850A (ja) * 2011-07-28 2014-09-18 エージーシー グラス ユーロップ 滑り止めガラス板を製造するための方法
EA023520B1 (ru) * 2011-07-28 2016-06-30 Агк Гласс Юроп Способ изготовления нескользящего стеклянного листа
WO2013079263A1 (fr) 2011-11-29 2013-06-06 Agc Glass Europe Plaque de verre présentant des propriétés non glissantes
WO2014012809A1 (fr) * 2012-07-18 2014-01-23 Agc Glass Europe Feuille de verre dépolie
BE1020793A3 (fr) * 2012-07-18 2014-05-06 Agc Glass Europe Feuille de verre depolie.

Also Published As

Publication number Publication date
EP2074072A2 (fr) 2009-07-01
WO2008046877A3 (fr) 2008-06-12

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