LOW PROFILE REINFORCING TAPE

• US 20090094922A1
• Filed: 12/19/2008
• Published: 04/16/2009
• Est. Priority Date: 03/18/2005
• Status: Active Grant

• Current Assignee: Saint-Gobain Adfors Canada Ltd. (Compagnie De Saint-Gobain)
• Original Assignee: Saint-Gobain Adfors Canada Ltd. (Compagnie De Saint-Gobain)
• Inventors: NEWTON, MARK J., Tucker, Mark W.
• Granted Patent: US 8,828,537 B2
• Time in Patent Office: Days
• US Class Current: 52/417
• CPC Class Codes: C09J 2301/1242 the opposite adhesive layers being different
• CPC Class Codes: C09J 2400/263 in the substrate
• CPC Class Codes: C09J 7/21 Paper; Textile fabrics
• CPC Class Codes: C09J 7/30 characterised by the adhesive composition
• CPC Class Codes: E04F 13/04 Bases for plaster sub-ceilings with plaster-carrying means E04B9/06
• CPC Class Codes: E04F 13/042 Joint tapes
• CPC Class Codes: Y10T 428/14 Layer or component removable to expose adhesive
• CPC Class Codes: Y10T 428/197 with noncoplanar reinforcement
• CPC Class Codes: Y10T 428/249955 Void-containing component partially impregnated with adjacent component
• CPC Class Codes: Y10T 428/249986 Void-containing component contains also a solid fiber or solid particle
• CPC Class Codes: Y10T 428/28 Web or sheet containing structurally defined element or component and having an adhesive outermost layer
• CPC Class Codes: Y10T 442/2738 Coating or impregnation intended to function as an adhesive to solid surfaces subsequently associated therewith
• CPC Class Codes: Y10T 442/3203 Multi-planar warp layers
• CPC Class Codes: Y10T 442/3366 Woven fabric is coated, impregnated, or autogenously bonded
• CPC Class Codes: Y10T 442/618 Blend of chemically different inorganic microfibers

Abstract

A reinforcing tape for imbedding in a joint compound, has reinforcing yarns defining openings for passage of the joint compound, wherein; the openings are bounded by the yarns; the yarns are provided with one or more coatings adding tensile strength and resistance to pull out of the yarns from the joint compound.

Claims

1. A reinforcing tape for reinforcing joint compound, comprising:

reinforcing yarns joined together to form an open fabric or scrim having openings for passage of the joint compound, wherein the openings are bounded by the yarns;

one or more coatings adding tensile strength to the yarns and adding resistance to pull out of the yarns from the joint compound, wherein the one or more coatings on the yarns includes an adhesive re-wettable in water; and

a further coating on said one or more coatings, the further coating on said one or more coatings comprising a pressure sensitive adhesive on at least a back side of the tape.

2. The reinforcing tape of claim 1, wherein the fabric comprises a weave of low profile having a thickness not greater than about 0.18 mm.

3. The reinforcing tape of claim 1, wherein the one or more coatings includes ethylene vinyl acetate, EVA, copolymer.

4. The reinforcing tape of claim 1, wherein the one or more coatings includes vinyl acetate, polymer or copolymer and styrene-butadiene, polymer or copolymer.

5. The reinforcing tape of claim 1, wherein the one or more coatings includes a coated weight of styrene-butadiene and the adhesive.

6. The reinforcing tape of claim 5, wherein the fabric comprises a weave of low profile having a thickness not greater than about 0.18 mm.

7. The reinforcing tape of claim 5, wherein the styrene concentration is adjusted to increase suppleness of the tape.

8. The reinforcing tape of claim 1, wherein the one or more coatings includes, vinyl acetate acrylic, styrene/acrylate, vinyl/acetate, acrylic, styrene acrylic, or copolymers and mixtures thereof.

9. The reinforcing tape of claim 1 wherein, the yarns include zero twist yarns.

10. The reinforcing tape of claim 1 wherein;

the yarns are arranged in a plain weave of, twisted warp yarns and twisted weft yarns;

the yarns have yarn counts of, not greater than 33 tex for one, and not greater than 66 tex for the other;

the warp yarns and the weft yarns are interchangeable, one to the other; and

the weave has a thickness of not greater than 0.18 mm.

11. The reinforcing tape of claim 1, further comprising:

a blocking agent at an outer surface of the tape.