Drywall tape and joint
First Claim
Patent Images
1. A drywall tape suitable for joint compound repairs and joint covering, comprising:
- a web of glass fibers; and
a coating disposed over a portion of said glass fibers in said web, said coating comprising a resinous binder being at least partially soluble or dispersible in said joint compound, and capable of forming an adhesive bond with said joint compound when set.
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Accused Products
Abstract
Drywall tapes, drywall joints and methods for their construction are provided by this invention. The drywall tape of this invention includes a web of glass fibers and a coating disposed over a portion of the glass fibers. The coating includes a resinous binder which is at least partially soluble or dispersible in joint compound. The resinous binder is capable of forming an adhesive bond with the joint compound when set.
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Citations
23 Claims
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1. A drywall tape suitable for joint compound repairs and joint covering, comprising:
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a web of glass fibers; and
a coating disposed over a portion of said glass fibers in said web, said coating comprising a resinous binder being at least partially soluble or dispersible in said joint compound, and capable of forming an adhesive bond with said joint compound when set. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A drywall joint comprising:
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a pair of drywall boards adjoined to form a seam region;
a drywall tape disposed over a portion of said seam region, said drywall tape comprising a web of glass fibers and a coating disposed thereon, said coating comprising a resinous binder capable of re-wetting when contacted by liquid water;
a first joint compound layer containing liquid water in solution disposed over said drywall tape, said liquid water of said first joint compound layer re-wetting the resinous binder in said coating, said first joint compound layer and said re-wetted coating drying to form an adhesive bond; and
a second joint compound layer disposed over said first joint compound layer. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method of preparing a drywall joint comprising:
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disposing a pair of drywall boards in adjoining relationship to one another to form a seam region;
disposing a drywall tape over said seam region, said drywall tape comprising a web of glass fibers having disposed thereon a resinous binder capable of re-wetting and setting when contacted with a joint compound to form an adhesive bond therewith;
applying a first joint compound layer over said drywall tape whereby a portion of said resinous binder is re-wetted; and
drying said first joint compound layer and said re-wetted resinous binder together to form an adhesive bond. - View Dependent Claims (20, 21)
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22. A finished drywall seam or repair region, comprising:
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a drywall seam or repair region;
a drywall tape comprising a web of glass fibers, including a re-wettable, resinous coating disposed at least on a first surface of said web, and a pressure-sensitive adhesive disposed on at least a second surface of said web;
said drywall tape adhered to the seam or repair region by said pressure-sensitive adhesive so as to substantially cover said seam or repair region;
a first joint compound layer containing liquid water in solution disposed over said drywall tape, wherein said liquid water re-wets the re-wettable, resinous binder, said first joint compound layer and said re-wetted, resinous binder drying to form an adhesive bond joining said web to said first joint compound layer;
said finished drywall joint comprising at least a 16% improvement in the average load to first crack under tensile load ASTM C474 (Appendix) over a similarly prepared finished drywall joint which does not contain said re-wettable resinous binder. - View Dependent Claims (23)
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Specification