Wallboard having improved drying rate due to plural contacting fiber networks

• US 4,296,169 A
• Filed: 02/04/1980
• Issued: 10/20/1981
• Est. Priority Date: 02/04/1980
• Status: Expired due to Term

• Current Assignee: Owens- Corning Fiberglas Technology Incorporated (Owens Corning)
• Original Assignee: Owens-Corning Fiberglas Corporation
• Inventors: Shannon, Richard F.
• Primary Examiner(s): Cannon, James C.
• Application Number:
  US06/118,332
• Time in Patent Office: 624 Days
• Field of Search: 156/42, 428/298, 428/303, 428/340, 428/428, 428/438, 428/537, 428/538, 428/302
• US Class Current: 428/292.7
• CPC Class Codes: B32B 13/08 of paper or cardboard
• CPC Class Codes: B32B 2607/00 Walls, panels
• CPC Class Codes: E04C 2/043 of plaster E04C2/049 takes precedence
• CPC Class Codes: Y10T 428/249926 Including paper layer
• CPC Class Codes: Y10T 428/249932 Fiber embedded in a layer derived from a water-settable material [e.g., cement, gypsum, etc.]
• CPC Class Codes: Y10T 428/27 Web or sheet containing structurally defined element or component, the element or component having a specified weight per unit area [e.g., gms/sq cm, lbs/sq ft, etc.]
• CPC Class Codes: Y10T 428/31634 Next to cellulosic
• CPC Class Codes: Y10T 428/31996 Next to layer of metal salt [e.g., plasterboard, etc.]

Abstract

A board comprising: two sheets of paper spaced apart and bonded to a core of inorganic cementitious material, said core having a network of glass monofilaments jack-strawed into a three-dimensional water transmitting network extending between its surfaces, and at least one of said layers of paper having a network of glass monofilaments jack-strawed into a water transmitting network that extends between its major surfaces with said network in said paper being in water transmitting contact with said network of said core. Preferably the core is gypsum having a density of about 40-65 pounds per cubic foot.

Claims

1. A board comprising:

two sheets of paper spaced apart and bonded to a core of inorganic cementitious material, said core having a network of dispersed glass monofilaments jack-strawed into a three-dimensional water transmitting network extending between its surfaces, and at least one of said layers of paper having a network of dispersed glass monofilaments jack-strawed into a water transmitting network that extends between its major surfaces with said network in said paper being in water transmitting contact with said network of said core.

2. The board of claim 1 wherein both sheets of paper have said monofilament network therein.

3. The board of claim 2 wherein said sheets of paper have between 0.05% and 1.0% by weight of said monofilaments therein and between 1,200 and 20,000 lineal inches of monofilaments per cubic inch of core material.

4. The board of claim 3 wherein said cementitious material comprises gypsum.

5. The board of claim 1 wherein said core has a density of about 40-65 pounds per cubic foot.

6. The board of claim 1 wherein said monofilaments have a diameter of less than 0.00080 inch.