Low profile reinforcing tape

• US 8,828,537 B2
• Filed: 12/19/2008
• Issued: 09/09/2014
• Est. Priority Date: 03/18/2005
• Status: Active Grant

• Current Assignee: Saint-Gobain Adfors Canada Ltd.
• Original Assignee: Saint-Gobain Adfors Canada Ltd.
• Inventors: Newton, Mark J., Tucker, Mark W.
• Primary Examiner(s): Shosho, Callie
• Assistant Examiner(s): HUANG, CHENG YUAN
• Application Number:
  US12/339,715
• Publication Number:
  US 20090094922A1
• Time in Patent Office: 2,090 Days
• Field of Search: None
• US Class Current: 428/343
• 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 low profile reinforcing tape for reinforcing joint compound including low profile reinforcing yarns joined together with a web adhesive binder to form an open fabric or scrim having openings for passage of the joint compound, wherein the openings are bounded by the low profile reinforcing yarns, the improvement comprising:

the low profile reinforcing yarns being arranged in a plain weave of twisted warp yarns and twisted weft yarns;

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

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

the plain weave has a thickness of not greater than 0.18 mm;

the low profile reinforcing yarns being coated with a first coating of a polymer having a suppleness, wherein the polymer suppleness increases suppleness of the tape low profile reinforcing for the tape to assume a low profile by lying flatly;

the low profile reinforcing yarns being coated with a second coating of an adhesive wettable in water adding tensile strength to the low profile reinforcing yarns and adding resistance to pull out of the low profile reinforcing yarns from the joint compound; and

a pressure sensitive adhesive on at least a back side of the low profile reinforcing tape.

2. The low profile reinforcing tape of claim 1, wherein the adhesivewettable in water includes ethylene vinyl acetate copolymer.

3. The low profile reinforcing tape of claim 1, wherein the polymer includes vinyl acetate polymer or copolymer and styrene-butadiene polymer or copolymer.

4. The low profile reinforcing tape of claim 1, wherein the polymer includes a coated weight of styrene-butadiene.

5. The low profile reinforcing tape of claim 4, wherein the styrene concentration is adjusted to increase suppleness of the low profile reinforcing tape.

6. The low profile reinforcing tape of claim 1, wherein the adhesive wettable in water includes vinyl acetate acrylic, vinyl/acetate, acrylic copolymer, styrene acrylic, or mixtures thereof.

7. The low profile reinforcing tape of claim 1, wherein the low profile reinforcing yams include zero twist yams.

8. The low profile reinforcing tape of claim 1, further comprising:

a water vapor repelling wax at an outer surface of the low profile reinforcing tape, wherein the water vapor repelling wax prevents the low profile reinforcing tape from becoming tacky in a humid atmosphere.