Patent ID: 6409855
Filing Date: 2002-06-25
Classification: B28B,B32B,C04B,E04C,E04F,H01L,Y02W,Y10T

Abstract:
A method for making wallboard or backerboard sheets comprising;forming core material into a plurality of sheets, each having opposing first and second major surfaces and comprising aerated concrete; joining the sheets of core material together in end-to-end relation and while advancing the joined-together sheets of core material along a path of travel; securing at least one face layer on at least one of the first and second major surfaces or the joined-together sheets of core material while advancing the joined-together sheets of core material along the path of travel; and cutting the joined-together sheets of core material and at least one face layer secured thereto into a plurality of wallboard or backerboard sheets while the joined-together sheets of core material and at least one face layer secured thereto are advanced along the path of travel.