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Uv-blocking glass plate, and glass window for vehicles using said glass plate

A technology of ultraviolet light and glass plate, which is applied in the fields of vehicles, buildings and vehicle window glass, and can solve the problems of high manufacturing cost

Active Publication Date: 2019-02-05
NIPPON SHEET GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process of forming a coating on the glass plate is necessary, and the manufacturing cost is significantly higher than the case where the glass plate itself satisfies the ultraviolet shielding ability.

Method used

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  • Uv-blocking glass plate, and glass window for vehicles using said glass plate
  • Uv-blocking glass plate, and glass window for vehicles using said glass plate

Examples

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Embodiment

[0108] Hereinafter, the present invention will be described in more detail by way of examples, but the following examples are merely illustrations of preferred embodiments of the present invention, similarly to the above.

[0109]Silica sand, dolomite, limestone, soda ash, Glauber's salt, potassium carbonate, carbon, iron oxide, titanium oxide, cerium oxide, cobalt oxide, nickel oxide, zinc oxide, and selenium were blended in the manner shown in Table 1 according to the composition of the glass And obtain glass raw material batch material. This batch was melted at 1450° C. using an electric furnace, held for 4 hours, and then flowed out onto a stainless steel plate. The thus-obtained glass plate was kept in a slow cooling furnace kept at 650° C. for 30 minutes, then the power was turned off and the glass plate was slowly cooled to room temperature in the furnace. The cooling rate between 650°C and 550°C in this slow cooling is about 0.1°C / sec. The obtained slowly cooled glas...

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PUM

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Abstract

The invention provides a glass plate which has superior UV transmission-blocking characteristics, has low to moderate-level of visible light transmittance, is relatively thin, substantially blocks transmission of UV from sunlight, and has superior solar radiation-blocking characteristics. The glass plate according to the invention has a thickness of 1-5 mm, a Tuv380 of 1.5% or less, a Tuv400 of 2.5% or less, a visible light transmittance (YA) of 5-40%, and a solar radiation transmittance (TG) of 5-45%, and comprises, in addition to a predetermined matrix composition, a glass composition containing, by mass, 1.0-5.0% of T-Fe2O3, 1.0-5.0% of TiO2, and 50-600 ppm of CoO, as coloring components, wherein the FeO proportion is 5-40%, and the sum of TiO2 and twice of T-Fe2O3 is 7.0% or more.

Description

technical field [0001] The present invention relates to a relatively thin glass plate comprising a glass composition having an extremely low ultraviolet transmittance to substantially prevent ultraviolet transmittance and a low to moderate visible light transmittance. The invention also relates to glazing for vehicles and buildings, in particular for vehicles. Background technique [0002] Soda-lime glass is used for window glass for vehicles and buildings. Such a window glass is required to have a function of shielding ultraviolet rays from the viewpoint of preventing sunburn and discoloration of people and objects inside the vehicle or indoors. [0003] It has been disclosed that the ultraviolet absorption function of soda lime glass is based on the absorption caused by trivalent iron oxide, and titanium dioxide (TiO 2 ), cerium oxide (CeO 2 ) and the like by absorbing ultraviolet absorbing components (Patent Document 1). [0004] However, in the glass composition disc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/087B60J1/00C03B27/04C03C3/083C03C3/085C03C3/089C03C3/091C03C3/093C03C4/02
CPCC03C3/087C03C4/02C03C4/085C03B27/0413B60J1/00C03B27/04C03B2201/40C03C3/093C03C2201/40G02B5/208
Inventor 濑户启充
Owner NIPPON SHEET GLASS CO LTD
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