Importance

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Abstract

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 functional coating. Another embodiment provides a multiple-pane insulating glass unit comprising two spaced-apart panes and a spacer joining confronting, inner peripheral surfaces of the panes. At least one of the panes has a coated outer surface. This 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 second major surface. A further embodiment provides a barrier layer that prevents contact between glazing compound and an exterior coating. Durable glazing compounds are provided in yet another embodiment.

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First Claim