Glazing assembly comprising a substrate provided with a stack of thin layers for solar protection and/or thermal insulation
First Claim
1. A glazing assembly comprising at least one transparent glass substrate and a stack of thin layers thereon, wherein said stack of thin layers comprises n functional layers having reflection properties in the infrared, in solar radiation or in both, and (n+1) coatings, wherein said coatings comprise one or more layers, at least one of which is made of a dielectric material, said functional layers and said coatings alternating so that each functional layer is placed between two coatings, wherein n≧
- 1;
wherein, when the substrate is subjected to a heat treatment selected from the group consisting of toughening, bending and annealing, in order to preserve the optical quality of the stack at least one of the following must be satisfied;
the coating placed on top of at least one of the functional layers includes at least one barrier layer comprising a material forming a barrier to at least oxygen and water, wherein said material is selected from the group consisting of SiO2, SiOx Cy, SiOx Ny, Si3 N4, and mixtures thereof;
orat least one absorbent layer comprising a material capable of absorbing the constituent material of said functional layer or a layer that is stabilizing with respect to said constituent material forms at least a part of;
(a) either the coating placed on top of the functional layer or under the barrier layer;
or (b) the coating placed under the functional layer.
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Accused Products
Abstract
A glazing assembly is provided made of at least one transparent substrate having a stack thereon that includes an alternation of n functional layers and n+1 coatings, wherein the functional layers have reflection properties in the infrared and/or solar radiation and wherein n≧1 and where, in order to maintain the quality of the stack when the substrate is subjected to a heat treatment step, at least one of the following must be satisfied:
the coating placed on top of at least one of the functional layers includes at least one barrier layer providing a barrier to at least oxygen and water; and
at least one absorbent or stabilizing layer made of a material capable of absorbing or stabilizing the constituent material of the functional layer forms a part of either the coating placed on top of the functional layer and under the barrier layer or the coating placed beneath the functional layer; and a method for production of the glazing assembly.
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Citations
36 Claims
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1. A glazing assembly comprising at least one transparent glass substrate and a stack of thin layers thereon, wherein said stack of thin layers comprises n functional layers having reflection properties in the infrared, in solar radiation or in both, and (n+1) coatings, wherein said coatings comprise one or more layers, at least one of which is made of a dielectric material, said functional layers and said coatings alternating so that each functional layer is placed between two coatings, wherein n≧
- 1;
wherein, when the substrate is subjected to a heat treatment selected from the group consisting of toughening, bending and annealing, in order to preserve the optical quality of the stack at least one of the following must be satisfied; the coating placed on top of at least one of the functional layers includes at least one barrier layer comprising a material forming a barrier to at least oxygen and water, wherein said material is selected from the group consisting of SiO2, SiOx Cy, SiOx Ny, Si3 N4, and mixtures thereof;
orat least one absorbent layer comprising a material capable of absorbing the constituent material of said functional layer or a layer that is stabilizing with respect to said constituent material forms at least a part of; (a) either the coating placed on top of the functional layer or under the barrier layer;
or (b) the coating placed under the functional layer. - 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, 29, 30, 31, 32, 33, 34, 35)
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36. A glazing assembly comprising at least one transparent glass substrate and a stack of thin layers thereon, wherein said stack of thin layers comprises n functional layers having reflection properties in the infrared, in solar radiation or in both, and (n+1) coatings, wherein said coatings comprise one or more layers, at least one of which is made of a dielectric material, said functional layers and said coatings alternating so that each functional layer is placed between two coatings, wherein n≧
- 1,
said stack of thin layers containing at least one barrier layer and at least one absorbent layer, wherein the at least one absorbent layer is a porous absorbent layer consisting essentially of a metal selected from the group consisting of Ni, Cr, Nb, Sn, Ti, NiCr alloys and steel; wherein, when the substrate is subjected to a heat treatment selected from the group consisting of toughening, bending and annealing, in order to preserve the optical quality of the stack at least one of the following must be satisfied; the coating placed on top of at least one of the functional layers includes at least one barrier layer comprising a material forming a barrier to at least oxygen and water;
orat least one absorbent layer comprising a material capable of absorbing the constituent material of said functional layer or a layer that is stabilizing with respect to said constituent material forms at least a part of; (a) either the coating placed on top of the functional layer or under the barrier layer;
or (b) the coating placed under the functional layer.
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Specification