Patent ID: 6403688
Filing Date: 2002-06-11
Classification: B28B,B29C,B32B,C04B,C08K,C08L,E04C

Abstract:
A method of manufacturing a building sheet comprising the steps of:forming a mixture by adding a mineral selected from the group consisting of calcium sulfate, perlite, and combinations thereof, to a binder formulation comprising at least one self-crosslinking permanently tacky polymer, said binder formulation being selected for its ability to fully cross-link with said mineral; combining said mixture with a suitable amount of water; gradually preparing a slurry by mixing and stirring said mixture and said water to form said slurry; enveloping said slurry between two paper cover sheets to form a wet board; and drying said wet board at a temperature in the range of 75Â° C. to 325Â° C.