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US 6,470,561 B1Granted
Spacer and spacer frame for an insulating glazing unit and method of making same
AssigneePPG Industries Ohio, Inc.
InventorsStephen C. Misera, Thomas P. Kerr, William R. Siskos
Life of this patent
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Abstract
A substrate having a bead of a moisture and/or gas pervious adhesive having a desiccant therein is shaped to provide U-shaped spacer stock. The spacer stock is bent to provide a spacer frame having continuous corners.
Claims18
A method of fabricating a spacer frame for maintaining two sheets in spaced relation comprising the steps of:
- providing a piece of spacer stock of sufficient length to provide the spacer frame, the spacer stock having at least a pair of side walls joined by a base to provide the sidewalls and base with a U-shape, the spacer stock having a bead of a moisture pervious material having a desiccant therein in contact with surface of the base between the sidewalls defined as inner surface of the base, the bead having structural stability less than the structural stability of the spacer stock;
- bending the piece of spacer stock to form the spacer frame, while
- maintaining the bead on the inner surface of the base during the practice of the bending step.
A method of fabricating a spacer frame for maintaining two sheets in spaced relation comprising the steps of:
- providing a desiccant contained in a pervious adhesive material;
- providing a substrate having a first end, a second end, and a center portion extending from the first end to the second end;
- forming the substrate and applying a bead of the adhesive containing material to selected portions of the center portion to provide a spacer stock having at least a pair of sidewalls joined by a base to provide the sidewalls and base with a U-shape, and the bead on surface of the base between the sidewalls defined as the inner surface of the base;
- bending the piece of spacer stock to form the spacer frame, while
- maintaining the bead on the inner surface of the base during the practice of the bending step wherein the adhesive property of the adhesive material maintains the bead on the inner surface of the base during the practice of the bending step.
2 more elements
Dependencies are inferred from the claim text.