Method for depositing a reflective layer on glass, and products obtained
First Claim
1. A process, comprising:
- depositing a metallic reflective layer on a surface of a ribbon of float glass by contacting the surface of the float glass with a pulverulent metal or molten metal in an inert or reducing atmosphere, whereinthe metal has a melting point that is less than or equal to the temperature at which the ribbon acquires dimensional stability, and whereinthe ribbon temperature during the contacting is such that the pulverulent metal melts and coalesces at the surface of the ribbon or the molten metal forms a sheet at the surface of the ribbon to provide a solid continuous metallic reflecting layer when the ribbon temperature is less than or equal to the melting point of the metal.
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Abstract
The subject of the invention is a process for depositing, especially continuously, on a glass ribbon (10) of a float line, a reflective layer (3) based on a metal whose melting point is less than or equal to the temperature at which the glass ribbon acquires dimensional stability. The deposition is carried out in a controlled atmosphere, this being inert or reducing, when the glass ribbon (10) has already acquired its dimensional stability, by bringing the surface of the said ribbon into contact with the metal (22) in pulverulent form or in molten form, the temperature of the ribbon during contacting being chosen so that the powder melts and coalesces, or so that the molten metal forms a sheet, at the surface of the ribbon, leaving a solid continuous layer when the temperature of the ribbon is at a temperature of less than or equal to the melting point of the metal.
107 Citations
38 Claims
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1. A process, comprising:
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depositing a metallic reflective layer on a surface of a ribbon of float glass by contacting the surface of the float glass with a pulverulent metal or molten metal in an inert or reducing atmosphere, wherein the metal has a melting point that is less than or equal to the temperature at which the ribbon acquires dimensional stability, and wherein the ribbon temperature during the contacting is such that the pulverulent metal melts and coalesces at the surface of the ribbon or the molten metal forms a sheet at the surface of the ribbon to provide a solid continuous metallic reflecting layer when the ribbon temperature is less than or equal to the melting point of the metal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 32)
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- 29. Glass substrate provided with at least one reflective layer (3) based on a metal of the intermetallic-compound, alloy or eutectic compound type, especially based on at least one of the metals belonging to the group comprising aluminium, zinc, tin and cadmium and, optionally, also comprising silicon, characterized in that the substrate (1) is also provided with an "external" complementary layer (4) and/or with an internal complementary layer (2), with respect to the said reflective layer (3), the complementary layer(s) being intended to ensure its chemical and/or mechanical durability.
Specification