WO2019106939A1 - Élément en verre et procédé pour la fabrication d'un élément en verre - Google Patents

Élément en verre et procédé pour la fabrication d'un élément en verre Download PDF

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Publication number
WO2019106939A1
WO2019106939A1 PCT/JP2018/036662 JP2018036662W WO2019106939A1 WO 2019106939 A1 WO2019106939 A1 WO 2019106939A1 JP 2018036662 W JP2018036662 W JP 2018036662W WO 2019106939 A1 WO2019106939 A1 WO 2019106939A1
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WO
WIPO (PCT)
Prior art keywords
glass
colored
film
glass member
colored film
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.)
Ceased
Application number
PCT/JP2018/036662
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English (en)
Japanese (ja)
Inventor
誠通 柳沢
潤 濱田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Central Glass Co Ltd
Original Assignee
Central Glass Co Ltd
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 Central Glass Co Ltd filed Critical Central Glass Co Ltd
Publication of WO2019106939A1 publication Critical patent/WO2019106939A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J1/00—Windows; Windscreens; Accessories therefor
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/02—Surface treatment of glass, not in the form of fibres or filaments, by coating with glass
    • C03C17/04—Surface treatment of glass, not in the form of fibres or filaments, by coating with glass by fritting glass powder

Definitions

  • the present invention relates to a glass plate having a colored film on its surface, and more particularly to a window glass for vehicles having a colored film.
  • a glass member such as a window glass having a colored film capable of suppressing transmission of various wavelength light while maintaining a certain degree of visibility is used.
  • Various colorants such as various pigments and absorbers, are known as the colorant of the above-mentioned colored film.
  • a windshield for a vehicle has conventionally been studied which is provided with a shade band for the purpose of preventing glare of the driver and improving the decorativeness.
  • the shade band is a substantially band-like colored area provided along the upper side of the windshield, and suppresses, for example, transmission of visible light obliquely incident from above the driver's field of view.
  • Such a shade band is produced by dyeing a part of the intermediate film constituting the windshield in a band shape or forming a colored film on the surface intermediate film side of the windshield.
  • Patent Document 1 a ceramic paste obtained by kneading a low melting glass frit, a color pigment, a resin, and a solvent is applied to the surface of a window glass and dried, and then light curing is performed at 620 ° C. to 670 ° C. A membrane window is disclosed.
  • color pigments such as cobalt oxide, chromium oxide, titanium oxide, cadmium oxide, cerium oxide, and copper oxide are used as coloring materials.
  • Patent Document 2 discloses that a laminated glass is used as a windshield for a vehicle, and a synthetic resin film in which a colored region is formed as a synthetic resin film of the laminated glass.
  • glass members such as window glass having a colored film have been studied for the purpose of reducing the load of heating and cooling, preventing glare and preventing the discoloration of interior materials and improving the decorative property. Further, in recent years, there is a demand for increasing the area of the opening from the viewpoints of lightability and design of a building or a vehicle, and the demand for a glass member having a colored film as described above is increasing.
  • Patent Document 2 in the method of coloring a synthetic resin film of laminated glass, there is a problem that the manufacturing process tends to be complicated, and the shape of the colored region is limited.
  • this invention aimed at obtaining the glass member which can reduce glare, and has a colored film which has suitable visibility.
  • the inventors of the present invention conducted intensive studies on the above problems, and when a glass powder containing a coloring component in the glass composition (hereinafter sometimes referred to as "colored glass powder") is fired to form a colored film, It turned out that the problem can be solved.
  • the present invention is a glass member having a colored film on the surface of a glass plate, wherein the colored film has colored glass.
  • Haze in the present specification refers to a value measured by a method in accordance with JIS K7136. Specifically, a colored film (thickness 15 ⁇ m) is formed on a soda lime glass plate, and the colored film is measured using a haze meter (manufactured by Suga Test Instruments Co., Ltd., HZ-T). Also, in the present invention, those having a haze of 20% or less are considered to have "preferred visibility".
  • the lower limit value is not particularly limited, but may be, for example, 0.01% or more, more preferably 0.1% or more.
  • the visible light transmittance in the present specification is measured using a self-recording spectrophotometer (U-4000 manufactured by Hitachi, Ltd.), and refers to a value calculated by a method in accordance with JIS R 3106 (1998).
  • the visible light transmittance is the visible light transmittance of the soda lime glass plate and the visible light transmittance of the colored film when the colored film (thickness 15 ⁇ m) is formed on the soda lime glass plate (thickness 1.8 mm). It is a value that combines the rate.
  • the lower limit value is not particularly limited, but may be, for example, 0.1% or more, and more preferably 1% or more.
  • Cold glass in the present specification refers to a glass containing a coloring component in the glass composition. Further, in the present specification, among the shapes of the colored glass, in particular, a powdery one is described as “colored glass powder”. In addition, the colored glass may be one in which the glass itself is colored, and may be visually observed.
  • Each structure of a glass member This invention is a glass member which has a colored film in the glass plate surface, Comprising: This colored film is what has colored glass, It is a glass member characterized by the above-mentioned. Below, each structure of this invention is demonstrated.
  • the glass plate to be used is not particularly limited, for example, soda lime glass, non-alkali glass, high transmission glass, borosilicate glass, low expansion glass, zero expansion glass, etc. which are usually used should be used. It is possible. Further, from the viewpoint of productivity, it is particularly preferable to use soda lime glass.
  • the glass plate may be subjected to an air-cooling strengthening treatment, a chemical strengthening treatment, or the like to improve the strength of the glass plate.
  • the thickness of the glass plate may be appropriately selected according to the application, and is not particularly limited.
  • it when it is used as a window glass for buildings or a partition glass, it may be about 2 to 25 mm, which is generally used.
  • window glass for a vehicle When used as a window glass for a vehicle, it may be about 0.1 to 3 mm for the purpose of weight reduction of the vehicle body and the like.
  • the shape of the said glass plate is although it does not specifically limit, When using as window glass for vehicles especially, it is preferable to have curved-surface shape.
  • the colored film is a film formed on the surface of a glass plate, and the film has colored glass.
  • a pigment is not used as a coloring material as in the prior art, and the use of colored glass in which glass itself is colored is used to suppress the increase in haze.
  • the thickness of the colored film is not particularly limited as long as the target visible light transmittance can be achieved.
  • the thickness may be about 1 to 30 ⁇ m.
  • the thickness may preferably be 5 to 30 ⁇ m.
  • the colored film may contain various absorbers, inorganic fillers, and the like as long as the visible light transmittance and the haze are not impaired.
  • the colored glass of the present invention is formed into a film on the surface of a glass plate to form a colored film.
  • the said colored glass should just use glass whose softening point is lower than the said glass plate, and is not specifically limited.
  • "RO" alkaline earth metal, and "R 2 O” denote the
  • the coloring component contained in the composition of said colored glass will not be specifically limited if it is a component which makes glass color.
  • those containing a transition metal element are preferable because they easily develop color in the glass composition.
  • the transition metal element is not particularly limited as long as a desired color can be obtained, and may be used alone or in combination. Examples of transition metal elements include Cu, Co, Fe, Cr, Ni, Mn, Nd, Er, Ce, V, Sn, Au, Cd, and Se, etc.
  • the content of the coloring component is not particularly limited as long as a desired visible light transmittance and color can be obtained, but may be, for example, 1 to 50 wt% in the glass composition of the colored glass.
  • the glass member according to a preferred embodiment of the present invention has a colored film, and the visible light transmittance of the portion where the colored film is formed is 60% or less and the haze is 20% or less.
  • the visible light transmittance may be preferably 50% or less, more preferably 40% or less.
  • the lower limit value is not particularly limited, but may be, for example, 1% or more.
  • the haze may be preferably 18% or less.
  • the lower limit is not particularly limited, as the haze is preferably as low as possible, but it may be, for example, 0% or more, more preferably about the same as a glass plate on which a colored film is formed.
  • the colored film of the present invention reduces glare of sunlight, when the glass member is assembled as a window glass of a vehicle or a building, the colored film should be at least on the upper side. It is suitable.
  • a non-film region where a colored film is not formed is provided on the same surface, it is possible to achieve a portion in which the visible light transmittance is not impaired, which is preferable from the viewpoint of light collection and visibility. That is, the surface of the glass member having the colored film preferably has a non-film area where the colored film is not formed.
  • the preferable application of the glass member of this invention is a window glass for vehicles, and the surface which has the said colored film of this window glass has a non-film area
  • the colored film such as the window glass is the above-mentioned shade band, and the colored film provided on the upper side can reduce the glare of sunlight and prevent the non-film region from obstructing the driver's view is there. That is, the glass member of the present invention is particularly preferably used as a windshield for a vehicle provided with the glass member on the front of the vehicle.
  • the glass member When used as a window glass or partition for a building, it may be used as a single plate, or may be incorporated into laminated glass or double glazing. Moreover, when using as window glass for vehicles, you may use similarly as a veneer and laminated glass.
  • a method for producing a glass member includes a step of forming a colored glass powder into a film on the surface of a glass plate, and a step of firing the colored glass powder. It is a manufacturing method.
  • the colored glass powder is a powdery colored glass.
  • the colored glass powder By firing the colored glass powder, it is possible to form a colored film having a desired shape, size and thickness on the surface of the glass plate. Moreover, it is possible to adjust visible light transmittance, a color tone, etc. by mixing several types of colored glass powder, or mixing with the uncolored glass powder.
  • the colored glass powder may be used alone or as a mixture of the colored glass powder and any powder, but a glass paste obtained by kneading the colored glass powder and the vehicle is preferred because it can be easily formed into a film. It is preferred to use.
  • the colored glass powder may be formed into a film by a known method and is not particularly limited.
  • “forming in a film shape” refers to disposing the colored glass powder on the surface of the glass plate so as to have a desired thickness and shape. For example, when using as a glass paste, screen printing, letterpress printing, intaglio printing, a bar coater, a die coater, etc. can be used.
  • the above-mentioned colored glass powder may be formed into a film shape on a flat glass plate surface, or may be formed into a film shape on a bent glass plate surface, and after forming a film on a flat glass plate It may be subjected to a bending process and fired by the heat at that time.
  • the colored glass powder it is preferable to use one having an average particle diameter of 0.1 to 50 ⁇ m from the viewpoint of easiness of firing and easiness of formation of a film. More preferably, it may be about 0.2 to 30 ⁇ m.
  • multiple types of colored glass powder may be used, and a glass powder not containing a coloring component may be included.
  • the softening point of colored glass powder it is desirable to use what is lower than the softening point of the glass plate to be used.
  • the softening point is generally 720 to 740 ° C., so that the softening point of the colored glass powder used is also less than the softening point of the glass plate used It may be desirable that the temperature be less than 720.degree. C.
  • Glass paste As described above, when forming the colored glass powder into a film, a glass paste obtained by kneading the colored glass powder and the vehicle may be used. When using a glass paste, it is preferable to contain 20 to 80 wt% of solid content with respect to the total mass of the glass paste. If it exceeds 80 wt%, the viscosity of the glass paste becomes too high and coating becomes difficult. If the amount is less than 20 wt%, the glass component may be too small, so the viscosity of the glass paste may be excessively low, which may make it difficult to apply. In addition, as the viscosity decreases, defects such as pinholes may easily occur. In addition, said "solid content" is a component which remains in colored glass after baking, and shall point out the total amount of colored glass powder, the filler etc. which were mentioned above.
  • Vehicle The above-mentioned vehicle is composed of a solvent and a binder, and after heating and baking the glass paste, it disappears by combustion, decomposition, volatilization and the like.
  • the above-mentioned binder disperses and holds colored glass powder in a glass paste, and is removed from the paste by heating when the glass paste is fired.
  • the binder is not particularly limited as long as it is removable at the time of firing, but, for example, acrylic acid ester (acrylic resin), methacrylic resin, polyvinyl alcohol, polyvinyl butyral resin, ethyl cellulose, polyethylene glycol derivative, nitrocellulose, poly Methylstyrene, polyethylene carbonate, methacrylic acid esters and the like can be used alone or in combination.
  • the above-mentioned solvent is not particularly limited as long as it can be removed from the glass paste at the same time as the above-mentioned binder.
  • the step of firing the colored glass powder formed into a film shape is generally performed at a temperature higher than the softening point of the colored glass powder to be used and lower than the melting temperature, preferably at a softening point + 200 ° C. or lower.
  • the apparatus etc. which are used for a heating are not specifically limited, For example, you may use an electric furnace etc.

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

Abstract

La présente invention a pour objet un élément en verre qui permet de réduire l'éblouissement et qui comprend un film coloré permettant une bonne visibilité. Cet élément en verre est caractérisé en ce qu'il comprend un film coloré sur une surface d'une feuille de verre, le film coloré comprenant un verre coloré. L'élément en verre est fabriqué par une étape consistant à mettre une poudre de verre coloré sous forme d'un film sur une surface d'une feuille de verre et une étape consistant à cuire la poudre de verre coloré. L'élément en verre ainsi obtenu permet de réduire l'éblouissement et permet une bonne visibilité.
PCT/JP2018/036662 2017-11-29 2018-10-01 Élément en verre et procédé pour la fabrication d'un élément en verre Ceased WO2019106939A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017229469A JP2019099402A (ja) 2017-11-29 2017-11-29 ガラス部材及びガラス部材の製造方法
JP2017-229469 2017-11-29

Publications (1)

Publication Number Publication Date
WO2019106939A1 true WO2019106939A1 (fr) 2019-06-06

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PCT/JP2018/036662 Ceased WO2019106939A1 (fr) 2017-11-29 2018-10-01 Élément en verre et procédé pour la fabrication d'un élément en verre

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JP (1) JP2019099402A (fr)
WO (1) WO2019106939A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS616150A (ja) * 1984-06-20 1986-01-11 Okuno Seiyaku Kogyo Kk 緑色色光用無機素材光学フイルタ−
JPH09268027A (ja) * 1996-04-04 1997-10-14 T & D Ceratec:Kk レッドガラス組成物
JP2000143288A (ja) * 1998-11-09 2000-05-23 Nippon Sheet Glass Co Ltd 着色膜被覆ガラス物品
JP2009208535A (ja) * 2008-03-03 2009-09-17 Honda Motor Co Ltd ウインドシールド構造
JP2010120823A (ja) * 2008-11-21 2010-06-03 Tokyo Univ Of Science 着色ガラス複合体およびその製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS616150A (ja) * 1984-06-20 1986-01-11 Okuno Seiyaku Kogyo Kk 緑色色光用無機素材光学フイルタ−
JPH09268027A (ja) * 1996-04-04 1997-10-14 T & D Ceratec:Kk レッドガラス組成物
JP2000143288A (ja) * 1998-11-09 2000-05-23 Nippon Sheet Glass Co Ltd 着色膜被覆ガラス物品
JP2009208535A (ja) * 2008-03-03 2009-09-17 Honda Motor Co Ltd ウインドシールド構造
JP2010120823A (ja) * 2008-11-21 2010-06-03 Tokyo Univ Of Science 着色ガラス複合体およびその製造方法

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