Edge treatments for coated substrates

C - Chemistry – Metallurgy – 03 – C

Patent

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Details

C03C 17/00 (2006.01) B24B 7/17 (2006.01) B24B 7/24 (2006.01) B24B 7/26 (2006.01) B24B 9/10 (2006.01) C03C 17/25 (2006.01) C03C 17/34 (2006.01) C03C 17/36 (2006.01) C03C 19/00 (2006.01) E06B 3/56 (2006.01) E06B 3/66 (2006.01) E06B 3/54 (2006.01) E06B 3/663 (2006.01) E06B 3/67 (2006.01)

Patent

CA 2404694

The invention provides a substrate (e.g., a glass pane) having generally opposed first and second major surfaces. At least one of these major surfaces bears a functional coating and has a peripheral region that is substantially free of the funcitonal coating. Another embodiment provides a multiple-pane insulating galss unit comprising two spaced-apart panes and a spacer joining confronting, inner peripheral surfaces of the panes. At least on of the panes has a coated outer surface. the coated outer surface has a peripheral region that is substantially free of the coating. The invention also provides methods for treating a coated substrate that has generally opposed first and second major surfaces each bearing a functional coating. The coating is substantially removed from a peripheral region of the first major surface. Likewise, the coating is substantially removed from a peripheral region of the secon major surface. A further embodiment provides a barrier layer that prevents cotact between glazing compound and an exterior coating. Durable compounds are provided in yet another embodiment. Image

L'invention porte sur un substrat (p.ex., un carreau) présentant des première et seconde surfaces principales généralement opposées. Au moins l'une de ces surfaces est recouverte d'un revêtement fonctionnel et présente une zone périphérique qui est quasiment exempte de revêtement fonctionnel. Selon un autre mode de réalisation, on prévoit un verre isolant à multiple vitrage comprenant deux vitrages espacés et un collage espaceur faisant face aux surfaces périphériques internes des carreaux. Au moins un des carreaux présente une surface externe revêtue. Cette dernière comporte une zone périphérique qui est quasiment exempte de revêtement. L'invention porte également sur des procédés de traitement d'un substrat revêtu présentant des première et seconde surfaces principales généralement opposées, chacune recouverte d'un revêtement fonctionnel. Ce dernier est quasiment éliminé d'une zone périphérique de la première surface principale. De même, le revêtement est quasiment retiré de la zone périphérique de la seconde surface principale. Selon un autre mode de réalisation, on prévoit une couche barrière permettant d'éviter le contact entre le vitrage et le revêtement extérieur. Selon un autre mode de réalisation, on prévoit des composés de vitrage durables.

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