PURPOSE: To prevent deflection of forms and a fixed bed at the time of binding by opposing an output unit of pressing means to a center on an upper surface of the bed and operating the means in the case of pressing a part to be bound.

CONSTITUTION: In the case of binding, a movable bed BE2 is approached oppositely to a fixed bed BE1 side in a state that a part to be bound of an end of a laminate is inserted between a pair of forms 1b and 2b, and the part to be bound is heated and pressurized. As a result, the bed BE1 is received by an applied pressure from a contact surface of the bet with the form 1b, and the bed BE1 and the form 1b tend to be bent in a state its center protrudes upward. However, pressing means 5a is operated simultaneously with the pressure, and a pressing force corresponding to the pressure is operated from an output unit 50a to a center on an upper surface of the bet BE1. Thus, bending of the form 1b and the bet BE1 is prevented, and loads to be operated at the form 1b and the bed BE1 are held in balance.