Patent ID: 6344101
Filing Date: 2002-02-05
Classification: B27N,B30B,Y10T

Abstract:
A method for producing embossed boards in which a continuously operating production press compresses and cures a mat of pressing stock with an application of pressure and heat thus forming a board, comprising the steps of:conveying the board from the continuously operating production press through a discharge section to a transfer section; cooling an outer surface of the board at the transfer section by spraying the outer surface with water at a rate in a range from 112.5 g/m2 to 225 g/m2; transferring the board from the transfer section to a continuously operating embossing press including a structured belt, contacting the outer surface of the board with the structured belt, and raising steam pressure on the belt in a steam pressure build-up section of the continuously operating embossing press; conveying the board to a steam pressure plasticizing section of the continuously operating embossing press, and subjecting the board to an increasing pressure and a rising temperature; conveying the board to a high-pressure embossing section of the continuously operating embossing press and subjecting the board to an embossing pressure and a plasticizing temperature; and passing the board to a drying and structure fixing section of the continuously operating embossing press, subjecting the board to a falling embossing pressure and temperature, thus forming in the outer surface of the board a permanently embossed pattern.