Claims
- 1. A method for making wallboard or backerboard sheets comprising:mixing and dispensing materials for making aerated concrete adjacent at least one face layer advancing along a path of travel; permitting the aerated concrete materials to rise and stiffen to define core material having first and second opposing surfaces with the at least one face layer secured thereto; cutting the core material and at least one face layer secured thereto into a plurality of uncured wallboard or backerboard sheets; and curing the uncured wallboard or backerboard sheets in an autoclave.
- 2. A method according to claim 1 wherein the at least one face layer comprises first and second face layers on respective first and second major surfaces of the core material.
- 3. A method according to claim 1 wherein the at least one face layer comprises paper.
- 4. A method according to claim 1 wherein the at least one face layer is moisture-resistant.
- 5. A method according to claim 1 further comprising forming the first major surface of the core material to have beveled portions adjacent respective opposing longitudinal side edges.
- 6. A method according to claim 1 wherein the at least one face layer extends around the opposing longitudinal side edges.
- 7. A method according to claim 1 further comprising adding reinforcing fibers to the aerated concrete.
RELATED APPLICATION
The present application is based upon U.S. provisional patent application Ser. No. 60/158,172 filed Oct. 7, 1999, the entire disclosure of which is incorporated herein by reference. Also, the present application is a divisional application of U.S. patent application Ser. No. 09/680,720 filed Oct. 6, 2000 and issued as U.S. Pat. No. 6,409,855.
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Provisional Applications (1)
|
Number |
Date |
Country |
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60/158172 |
Oct 1999 |
US |