Method of making fabric covered ceiling board

Claim 1

A method for covering with a fabric facing a ceiling board with four sides, a top and bottom, said board having a plurality of parallel flat surfaces on different planes on the top surface thereof, vertical surface joining these different parallel planes and providing corners and edges between these different planar surfaces, said corners being formed from the vertical and planar surfaces so that the fabric facing needs to be stretched or shrunk at different points when the fabric is shaped to the overall contour of the flat surface and edges of the four sides of the ceiling board, the method comprising the steps of: (a) placing a heat shrinkable and heat stretchable fabric facing material on the top surface of the ceiling board preformed with flat surfaces on different planes with the fabric being of a size greater than the top surface area of the ceiling board and an adhesive between the fabric and the board, (b) positioning said ceiling board and fabric facing in a heated mold which has a mold cavity with the walls of the cavity shaped to the contour of the surfaces and edges of the ceiling board, said walls of the cavity having at least two planar parallel surface joined together by at least two vertical surfaces to form at least one corner, and (c) pressing said mold cavity walls against said ceiling board with said fabric facing so that by said pressing the fabric facing is pressed down against at least said two planar surfaces, at least said two vertical surfaces and their corresponding edge configuration and, by heat, said fabric is stretched at some points and shrunk at other points to mold said fabric to the contour of said ceiling board so that the fabric assumes the configuration of the surfaces, corners, and edges of the ceiling board without the existence of any wrinkles or gathers in the fabric molded to the ceiling board and the fabric is adhesively held to the ceiling board.

Claim 2

A method for covering with a fabric facing a ceiling board with four sides, a top and bottom, said board having a plurality of parallel flat surfaces on different planes on the top surface thereof, vertical surface joining these different parallel planes and providing corners and edges between these different planar surfaces, said corners being formed from the vertical and planar surfaces so that the fabric facing needs to be stretched or shrunk at different points when the fabric is shaped to the overall contour of the flat surface and edges of the four sides of the ceiling board, the method comprising the steps of: (a) placing a heat shrinkable and heat stretchable fabric facing material on the top surface of the ceiling board preformed with flat surfaces on different planes with the fabric being of a size greater than the top surface area of the ceiling board and an adhesive between the fabric and the board, (b) positioning said ceiling board and fabric facing in a heated mold which has a mold cavity with the walls of the cavity shaped to the contour of the surfaces and edges of the ceiling board, said walls of the cavity having at least two planar parallel surface joined together by at least two vertical surfaces to form at least one corner, and (c) pressing said mold cavity walls against said ceiling board with said fabric facing so that by said pressing the fabric facing is pressed down against at least said two planar surfaces, at least said two vertical surfaces and their corresponding edge configuration and, by heat, said fabric is stretched at some points and shrunk at other points to mold said fabric to the contour of said ceiling board so that the fabric assumes the configuration of the surfaces, corners, and edges of the ceiling board without the existence of any wrinkles or gathers in the fabric molded to the ceiling board and the fabric is adhesively held to the ceiling board.