PURPOSE: To save energy consumption, to eliminate contamination and loss in a factory and to obviate generation of distortion of patterns by eliminating the need for a drying stage and water draining treatment which are heretofore required for conventional lining and narrowing a floor area for installation.

CONSTITUTION: A sheet for adhesion, such as film or non-woven fabric consisting of a thermoplastic resin having a low m. p. is superposed on the rear surface of a long-sized pile carpet consisting of a base fabric and piles implanted on the base fabric while the pile carpet is made to travel. The sheet for adhesion is thermally welded onto the rear surface of the pile carpet.