A calender for testing for forming a resin film from a resin material, comprising: a two-roll module including two rolls for rolling or mixing the resin material; a main body module including three rolls for rolling the resin material; a take-off module including a take-off roll for separating the resin film from the main body module, characterized in that a frame of the two-roll module being directly and detachably fixed to an upper surface of a frame of the main body module, and a frame of the take-off module being directly and detachably fixed to a rear side surface of the frame of the main body module; the calendar further comprising: a base module which directly and detachably fixes the main body module on an upper surface and has a common rail horizontally extending to the rear of the base module; a cooling module for cooling the resin film at the rear of the main body module; a winder module for winding the resin film at the rear of the cooling module: and an extrusion module which is directly and detachably fixed to a rear side surface of the frame of the two-roll module and kneads and extrudes the resin material, wherein a frame of the cooling module and a frame of the winder module are fixed so as to move on and to be attached to and detached from an upper surface of the base module along the common rail. a two-roll module including two rolls for rolling or mixing the resin material; a main body module including three rolls for rolling the resin material; a take-off module including a take-off roll for separating the resin film from the main body module, characterized in that a frame of the two-roll module being directly and detachably fixed to an upper surface of a frame of the main body module, and a frame of the take-off module being directly and detachably fixed to a rear side surface of the frame of the main body module; the calendar further comprising: a base module which directly and detachably fixes the main body module on an upper surface and has a common rail horizontally extending to the rear of the base module; a cooling module for cooling the resin film at the rear of the main body module; a winder module for winding the resin film at the rear of the cooling module: and an extrusion module which is directly and detachably fixed to a rear side surface of the frame of the two-roll module and kneads and extrudes the resin material, wherein a frame of the cooling module and a frame of the winder module are fixed so as to move on and to be attached to and detached from an upper surface of the base module along the common rail. a base module which directly and detachably fixes the main body module on an upper surface and has a common rail horizontally extending to the rear of the base module; a cooling module for cooling the resin film at the rear of the main body module; a winder module for winding the resin film at the rear of the cooling module: and an extrusion module which is directly and detachably fixed to a rear side surface of the frame of the two-roll module and kneads and extrudes the resin material, wherein a frame of the cooling module and a frame of the winder module are fixed so as to move on and to be attached to and detached from an upper surface of the base module along the common rail.