Method for protecting a glass substrate coated with an electrochromic stack and method for producing an insulating glazing
AssigneeSaint-Gobain Glass France
InventorsFlorent Martin, Charline Lalande, Bertrand Heurtefeu, Jean-Christophe Giron
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Abstract
A process for protecting a glass substrate coated with an electrochromic stack, includes depositing a temporary protective layer on the electrochromic stack, the temporary protective layer including an organic polymeric matrix and having a thickness of between 1 μm and 30 μm, and the temporary protective layer being removable by heat treatment at a temperature of between 300° C. and 500° C., fora period of between 180 s and 240 s.
Claims22
A process for protecting a glass substrate coated with an electrochromic stack, comprising:
- depositing a temporary protective layer on said electrochromic stack, said electrochromic stack including a layer of electrochromic material, said temporary protective layer comprising an organic polymeric matrix and having a thickness between 1 μm and 30 μm, and
- removing said temporary protective layer by heat treatment at a temperature between 300° C. and 500° C. for a period of between 180 s and 240 s such that the temporary protective layer deposited on said glass substrate coated with said electrochromic stack is removed without tempering, bending or annealing said glass substrate during said heat treatment and without crystallizing said layer of electrochromic material during said heat treatment.
A process for producing an insulating glazing comprising a first glass substrate coated with an electrochromic stack, the process comprising:
- depositing of a temporary protective layer on said electrochromic stack, said electrochromic stack including a layer of electrochromic material, said temporary protective layer comprising an organic polymeric matrix and having a thickness of between 1 μm and 30 μm,
- performing a manipulation and/or transformation and/or treatment and/or transportation and/or washing and/or storage of said protected substrate,
- removing said temporary protective layer by heat treatment at a temperature of between 300° C. and 500° C., for a period ranging from 180 s to 240 s such that the temporary protective layer deposited on said glass substrate coated with said electrochromic stack is removed during said heat treatment without tempering, bending or annealing said glass substrate and without crystallizing said layer of electrochromic material,
- applying bus bars on the electrochromic stack devoid of protective layer,
- assembling by lamination of the face opposite the glass substrate coated with the electrochromic stack with a counter-glass so as to form a laminated glazing, and
- assembling the laminated glazing as an insulating glazing by a spacer and of a second glass substrate.
Dependencies are inferred from the claim text.