CONNECTING METHOD FOR EXPANDED SHEET, AND DEVICE THEREFOR

PROBLEM TO BE SOLVED: To provide a connecting method for expanded sheet, wherein the productivity is high, and in addition, a required area for the working space can be small, and its device. SOLUTION: For this connecting method for expanded sheet, a first expanded sheet 20A and a second expanded sheet 20B are pulled onto a table from the same direction, and the bonding surface 21A of the first expanded sheet 20A is made to face up, and the bonding surface 21B of the second expanded sheet 20B is made to face down, and the second expanded sheet 20B is superposed on the first expanded sheet 20A in the longitudinal direction, and also, the end parts of both sheets are arranged at approx. the same location. Then, the superposed two expanded sheets 20A, 20B are cut by a blade 68 while being pressed from the top to a table 44 by a pressing protuberance 60, and the cut surfaces are heat-welded by heating to a heat-welding temperature or higher by a heating element 70 through the blade 68 while the expanded sheets 20A, 20B are being pressed. In addition, the heat-welded cut surfaces are placed at an intermediate location, and the first expanded sheet 20A and the second expanded sheet 20B are extended in the directions which are opposite from each other.