Substrate provided with a multilayer stack having thermal...

C - Chemistry – Metallurgy – 03 – C

Patent

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Details

C03C 17/36 (2006.01)

Patent

CA 2747695

The invention relates to a multiple-glazing panel comprising at least two substrates, one substrate being coated on an inner face in contact with an intermediate gas cavity with a thin-film multilayer stack having reflection properties in the infrared and/or in solar radiation, which multilayer stack has only a single metallic functional layer (140) and two dielectric films (120, 160), said films each comprising at least one dielectric layer (122, 126; 162, 166), said functional layer (140) being placed between the two dielectric films (120, 160), characterized in that at least one dielectric film (120, 160), or even both dielectric films (120, 160), has an absorbent layer (123, 165) which is placed in the dielectric film between two dielectric layers (122, 126; 162, 166), the absorbent material of the absorbent layer(s) (123, 165) being predominantly in the dielectric film (120) lying beneath the metallic functional layer (140) or predominantly in the dielectric film (160) lying above the metallic functional layer (140).

L'invention se rapporte à un vitrage multiple comportant au moins deux substrats, un substrat étant revêtu sur une face intérieure en contact avec une lame de gaz intercalaire d'un empilement de couches minces à propriétés de réflexion dans l'infrarouge et/ou dans le rayonnement solaire comportant une seule couche fonctionnelle métallique (140) et deux revêtements diélectriques (120, 160), lesdits revêtements comportant chacun au moins une couche diélectrique (122, 126; 162, 166), ladite couche fonctionnelle (140) étant disposée entre les deux revêtements diélectriques (120, 160), caractérisé en ce que au moins un revêtement diélectrique (120, 160), voire les deux revêtements diélectriques (120, 160), comporte une couche absorbante (123, 165) qui est disposée dans le revêtement diélectrique entre deux couches diélectriques (122, 126; 162, 166), la matière absorbante de la (ou des) couche(s) absorbante(s) (123, 165) étant majoritairement dans le revêtement diélectrique (120) sous-jacent à la couche fonctionnelle métallique (140) ou majoritairement dans le revêtement diélectrique (160) sus-jacent à la couche fonctionnelle métallique (140).

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