A laminator, comprising: a substrate supply part for supplying a substrate on which a metal pattern is formed for each predetermined unit area; a coverlay supply part (220, 230) for supplying a film to which a plurality of coverlays punched to a predetermined size is attached; a heating roller part for bonding the substrate and the film so that the plurality of coverlays respectively covers the metal pattern; a substrate tension adjustment part for adjusting tension of the substrate transferred to the heating roller part; a film tension adjustment part (320, 330) for adjusting the tension of the film transferred to the heating roller part; a bonding state image photographing part for measuring an interval between the plurality of coverlays after the heating roller part bonds the substrate and the film; and an adjustment part for adjusting any one or more of the tension of the substrate adjusted by the substrate tension adjustment part and the tension of the film adjusted by the film tension adjustment part (320, 330) so that the interval between the plurality of coverlays measured by the bonding state image photographing part maintains a preset allowable interval, wherein the heating roller part includes: a pair of heating rollers (510, 520) opposite to both surfaces of the substrate; and a position variable support device for adjusting an interval between the pair of heating rollers (510, 520) by moving a position of any one of the pair of heating rollers (510, 520), characterized in that the position variable support device includes: a ball screw shaft; a support body screwed to the ball screw shaft and supporting any one of the pair of heating rollers (510, 520); a servo motor for rotating the ball screw shaft to move a position of the support body; and an air balancer for maintaining a horizontal state of the support body. a substrate supply part for supplying a substrate on which a metal pattern is formed for each predetermined unit area; a coverlay supply part (220, 230) for supplying a film to which a plurality of coverlays punched to a predetermined size is attached; a heating roller part for bonding the substrate and the film so that the plurality of coverlays respectively covers the metal pattern; a substrate tension adjustment part for adjusting tension of the substrate transferred to the heating roller part; a film tension adjustment part (320, 330) for adjusting the tension of the film transferred to the heating roller part; a bonding state image photographing part for measuring an interval between the plurality of coverlays after the heating roller part bonds the substrate and the film; and an adjustment part for adjusting any one or more of the tension of the substrate adjusted by the substrate tension adjustment part and the tension of the film adjusted by the film tension adjustment part (320, 330) so that the interval between the plurality of coverlays measured by the bonding state image photographing part maintains a preset allowable interval, wherein the heating roller part includes: a pair of heating rollers (510, 520) opposite to both surfaces of the substrate; and a position variable support device for adjusting an interval between the pair of heating rollers (510, 520) by moving a position of any one of the pair of heating rollers (510, 520), characterized in that the position variable support device includes: a ball screw shaft; a support body screwed to the ball screw shaft and supporting any one of the pair of heating rollers (510, 520); a servo motor for rotating the ball screw shaft to move a position of the support body; and an air balancer for maintaining a horizontal state of the support body. a pair of heating rollers (510, 520) opposite to both surfaces of the substrate; and a position variable support device for adjusting an interval between the pair of heating rollers (510, 520) by moving a position of any one of the pair of heating rollers (510, 520), characterized in that the position variable support device includes: a ball screw shaft; a support body screwed to the ball screw shaft and supporting any one of the pair of heating rollers (510, 520); a servo motor for rotating the ball screw shaft to move a position of the support body; and an air balancer for maintaining a horizontal state of the support body. a ball screw shaft; a support body screwed to the ball screw shaft and supporting any one of the pair of heating rollers (510, 520); a servo motor for rotating the ball screw shaft to move a position of the support body; and an air balancer for maintaining a horizontal state of the support body.