Method for coating glass
AssigneePilkington Brothers Limited
InventorsBernard James Kirkbride, Robert Andrew Downey, Charles Victor Thomasson, Joseph Earle Lewis
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Abstract
A coating consisting of or containing silicon is produced on glass by moving the glass, at a temperature of at least 400.degree. C, past a coating station to which silane-containing gas is supplied. The gas is released close to the glass surface into a hot zone opening towards the glass surface and at a substantially constant pressure across that surface. Non-oxidizing conditions are maintained in the hot zone, and the coating is produced by pyrolysis of the gas on the glass surface.
Claims10
A method of producing a silicon coating on a glass surface, comprising:
- moving the glass surface at a temperature of at least 400.degree. C past a hot zone of a coating station, which hot zone extends across the glass surface and opens towards the glass surface;
- maintaining non-oxidising conditions in the hot zone;
- supplying silane-containing gas to the coating station and feeding the gas to said hot zone;
- cooling the silane-containing gas at the coating station as it is fed towards said hot zone;
- and
- releasing the cool silane-containing gas into the hot zone at a substantially constant pressure across that zone so that the gas is rapidly heated as it traverses the hot zone and reaches the glass surface at a substantially constant temperature and pressure across the glass surface for pyrolysis thereon to produce a silicon coating of predetermined thickness on the glass surface.
A method of producing a silicon coating on a hot glass surface, the method comprising:
- moving the hot glass surface past a hot zone of a coating station, which hot zone extends across and opens towards the hot glass surface;
- maintaining non-oxidising conditions in the hot zone;
- supplying silane-containing gas to the coating station for feeding into the hot zone;
- maintaining the silane-containing gas to be fed in a temperature condition sufficiently cool to avoid decomposition and deposition of silicon prior to feeding into the hot zone;
- releasing the cool silane-containing gas into the hot zone at a substantially constant temperature and pressure across the hot glass surface;
- and
- pyrolyzing the silane on the hot glass surface by maintaining the temperature of the glass surface passing the hot zone at a sufficiently high temperature to produce a silicon coating on the glass surface.
Dependencies are inferred from the claim text.