Fire-Resistant Drywall Tape, Method Of Using And Manufacture of the Same

• US 20080128070A1
• Filed: 11/19/2007
• Published: 06/05/2008
• Est. Priority Date: 05/16/2005
• Status: Abandoned Application

• Current Assignee: Dura-Tape International
• Original Assignee: Dura-Tape International
• Inventors: Goldman, Lee
• Application Number:
  US11/942,519
• Publication Number:
  US 20080128070A1
• Time in Patent Office: Days
• US Class Current: 156/71
• CPC Class Codes: B32B 5/02 characterised by structural features of a fibrous or filamentary layer layer formed of metallic wires B32B15/02; layer formed of natural mineral fibres B32B19/02; layer formed of wood fibres B32B21/02
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: C08K 3/016 Flame-proofing or flame-retarding additives
• CPC Class Codes: C08K 5/0066 Flame-proofing or flame-retarding additives
• CPC Class Codes: C09D 5/18 Fireproof paints including high temperature resistant paints
• CPC Class Codes: C09J 2301/306 the adhesive being water-activatable
• CPC Class Codes: C09J 2301/408 additives as essential feature of the adhesive layer
• CPC Class Codes: C09J 2400/263 in the substrate
• CPC Class Codes: C09J 7/205 characterised by the backing impregnating composition
• CPC Class Codes: C09J 7/21 Paper; Textile fabrics
• CPC Class Codes: E04F 13/042 Joint tapes
• CPC Class Codes: Y10T 428/28 Web or sheet containing structurally defined element or component and having an adhesive outermost layer

Abstract

The present invention relates to a fire-resistant wallboard tape. The fire-resistant wallboard tape covers elongated joints in wallboards. This tape includes a fluid-activated, gummed adhesive, a fibrous material and a flame retardant additive. The fluid-activated, gummed adhesive is adhered to a surface of the fibrous material and is activated when wet. And since the fibrous material is a resin-impregnated body, the fibrous material will remain relatively non-moisture absorbent during activation of the fluid-activated, gummed adhesive, thereby allowing the fluid-activated, gummed adhesive to dry within several minutes after activation. This, in combination with, the flame retardant additive allows the fire-resistant wallboard tape to achieve quick drying times and at least a one-hour fire rating.

Claims

1. A fire-resistant wallboard tape for covering elongated joints in wallboards comprising:

a fluid-activated, gummed adhesive;

a fibrous material having a resin-impregnated body, the resin-impregnated body being non-moisture absorbent, the resin-impregnated body remaining relatively non-moisture absorbent during activation of the fluid-activated, gummed adhesive; and

a flame retardant additive, the flame retardant additive allowing the fire-resistant wallboard tape to achieve at least a one-hour fire rating.

2. The fire-resistant wallboard tape of claim 1 whereby activation of the fluid-activated, gummed adhesive occurs by submerging the fire-resistant wallboard tape into a fluid.

3. The fire-resistant wallboard tape of claim 2 whereby the fluid is water.

4. The fire-resistant wallboard tape of claim 1 whereby the fluid-activated, gummed adhesive dries in about 5 to 60 minutes after activation.

5. The fire-resistant wallboard tape of claim 1 whereby the fibrous material has a top surface and a bottom surface.

6. The fire-resistant wallboard tape of claim 5 whereby the fluid-activated, gummed adhesive is applied to a bottom surface of the fibrous material.

7. The fire-resistant wallboard tape of claim 6 whereby the bottom surface of the fibrous material is applied adjacent to and over elongated joints in wallboards.

8. The fire-resistant wallboard tape of claim 1 whereby the fluid-activated, gummed adhesive is a water-soluble, water-activated adhesive.

9. The fire-resistant wallboard tape of claim 1 further comprising:

a color additive.

10. The fire-resistant wallboard tape of claim 1 further comprising:

a surface-sizing agent.

11. The fire-resistant wallboard tape of claim 10 whereby the surface-sizing agent prevents an installed tape from being re-activated.

12. The fire-resistant wallboard tape of claim 1 whereby the fluid-activated, gummed adhesive is activated prior to installation over an elongated joint.

13. The fire-resistant wallboard tape of claim 1 whereby the fluid-activated, gummed adhesive is activated by wetting surfaces adjacent to an elongated joint.

14. The fire-resistant wallboard tape of claim 1 further comprising:

mold and mildew inhibitors.

15. The fire-resistant wallboard tape of claim 14 whereby the mold and mildew inhibitors include a liquid polysiloxane and the liquid polysiloxane is mixed with the fluid-activated, gummed adhesive in a proportion of less than five percent by volume.

16. A method of manufacturing a fire-resistant wallboard tape comprising the steps of:

providing a fluid-activated, gummed adhesive;

providing a fibrous material having a resin-impregnated body, the resin-impregnated body being non-moisture absorbent, the resin-impregnated body remaining relatively non-moisture absorbent during activation of the fluid-activated, gummed adhesive;

providing a flame retardant additive, the flame retardant additive allowing the fire-resistant wallboard tape to achieve at least a one-hour fire rating; and

coating a first side of the fibrous material with the fluid-activated, gummed material and the flame retardant additive.

17. A method of using a fire-resistant wallboard tape to cover elongated joints in wallboards comprising the steps of:

a) providing an elongated length of fire-resistant wallboard tape of width sufficient to overlie the elongated joints, the tape including a resin impregnated fibrous base, a fluid-activated, gummed adhesive and a fire retardant additive;

b) wetting an exposed surface of the fluid-activated, gummed adhesive, said resin impregnated fibrous base remaining relatively non-moisture absorbent during the wetting of the exposed surface of the fluid-activated, gummed adhesive;

c) pressing the exposed surface of the fluid-activated, gummed adhesive into smooth contact with the wallboards to overlie the elongated joints and to adhere the exposed surface of the fluid-activated, gummed adhesive to the wallboards; and

d) allowing the exposed surface of the fluid-activated, gummed adhesive to dry by evaporation of moisture in about less than one hour.