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Coated glass sheet

A glass plate and glass technology, applied in the field of glass plates, can solve the problems of mechanical resistance and water resistance of uncoated glass plates

Inactive Publication Date: 2009-04-22
AGC FLAT GLASS EUROPE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the first step does not provide the coated glass sheet with sufficient mechanical and water resistance to withstand transport, e.g. by truck, for cutting, edging or storage prior to heat treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0044] The glass plate is conveyed along a certain route by a roller conveyor. First wash it in the normal way. Then it passes under the curtain coater, where it is covered with white glaze. Dry the coating at a moderate temperature, ie at about 150°C, for 15 minutes. Then the glass plate is passed under the roll coater, and in the roll coater, a UV curable resin (GII207) containing polyester resin from Green Isolight International is applied on the first layer of the glaze (Carbon black is added). The second layer is cured directly after application, in an ultraviolet oven for less than 1 minute, preferably less than 30 seconds. Two embodiments are implemented, one with 8% by weight carbon black and the other with 40% by weight carbon black. Both showed similar results.

[0045] The thickness of the first layer once dried and before the heat treatment was 43 μm and the thickness of the second layer once dried and before the heat treatment was 13 μm. The final product before heat ...

Embodiment 2

[0048] The glass plate is conveyed along a certain route by a roller conveyor. First wash it in the normal way. Then it passes under the curtain coater, in which it is covered with TEMPVER bianco 3400-06-011 white glaze from FENZI company. Dry the coating at a moderate temperature, that is, at a temperature of about 220°C measured on the glass, for 8 minutes. The glass plate was then passed through under a curtain coater, in which the first layer of the glaze was applied with SK1690 polyurethane varnish from Valspar. No glaze filler is added to the resin. After application, the second layer with a thickness of about 30 μm is directly dried in a liquid state, and dried in a tunnel oven. The drying temperature is about 140° C. measured on the glass and lasts for about 7 minutes.

[0049] The thickness of the first layer is 50-60 μm once dried and before the heat treatment and the thickness of the second layer is 10-15 μm once dried and before the heat treatment. In the Clemen test r...

Embodiment 3

[0051] The SK1825 paint from VALSPAR was centrifuged at 13000 rpm in an Allegra 25R centrifugal separator from Beckman-Coulter for 1.5 hours at 20°C. The paint contained a methacrylic resin combined with a melamine-formaldehyde type aminoplast resin . Remove the fillers present in the initial paint. Then the 1T1415 filler of the JOHNSON MATTHEY glaze was added to the paint without filler in an amount of 40% by weight.

[0052] First wash the glass plate in the normal way. Then, a bar coater was used to cover the 144001 black 801029 black glaze from FERRO with a thickness of about 150 μm in the liquid state. The coating is dried at a moderate temperature, that is, at about 150°C, for 15 minutes. Then a rod coater was used to apply centrifugal separated SK1825 paint on the first layer of the glaze, the paint including the 1T1415 filler of the JOHNSON MATTHEY glaze. The second layer, which has a thickness of about 60 μm in the liquid state, is dried directly after application, in a s...

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Abstract

Glass sheets according to the invention, have a coating provided on a surface thereof , wherein the coating comprises a first layer comprising an enamel precursor and a second layer comprising a resin. Such glass sheets may be heat treated and, before heat treatment, may be handled and ransported without damaging the coating, may be cut and ground without causing the coating to peel off or to be damaged at the borders of the cutting line, and offer a good resistance under running water avoiding the peeling off or destruction of the coating.

Description

Technical field [0001] The present invention relates to a coated glass sheet, particularly a glass sheet with a lacquer layer formed on the surface, and to such a glass sheet that is heat-treatable and can be manipulated before such possible heat-treatment. As used herein, "paint layer" means paint, enamel, lacquer or other types of decorative colored layers. Background technique [0002] The glass sheet according to the present invention can have a variety of applications. For example, painted glass panels can be used for decorative purposes: furniture, wardrobes (such as furniture doors, such as partitions), tables, brackets, bathrooms, store displays (such as wall coverings, such as spandrels), etc. Wait. This lacquer can also be used on automotive window panes or at least part of these windows, for example on the peripheral part of the windshield. More and more of these applications make tempered glass panels necessary because they have the advantage of being more resistant t...

Claims

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Application Information

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IPC IPC(8): C03C17/42C03C17/02C03C17/04C03C17/00
Inventor F·斯加索O·布埃斯纳德N·雅各布斯
Owner AGC FLAT GLASS EUROPE SA
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