▎ 摘　　要

NOVELTY - Device comprises a chamber which is hermetically sealed with outside, a first rotating roll and a second rotating roll provided in chamber, and capable of winding and unwinding a metal thin film roll, a heating unit for heating the metal thin film between first rotating roll and second rotating roll, a gas supply part formed at one side of chamber for supplying gas into the chamber, a gas discharge portion formed at one side of chamber for discharging gas from inside the chamber, a roll driving unit for forward and reverse rotations of first rotating roll and second rotating roll. USE - The device is useful for producing graphene (claimed). ADVANTAGE - The device controls injected gas atmosphere into chamber and improves quality of graphene. DETAILED DESCRIPTION - Device comprises a chamber (10) which is hermetically sealed with outside, a first rotating roll (20) and a second rotating roll (30) provided in the chamber and capable of winding and unwinding a metal thin film roll, a heating unit (40) for heating the metal thin film between the first rotating roll and the second rotating roll, a gas supply part(50) formed at one side of the chamber for supplying gas into the chamber, a gas discharge portion formed at one side of the chamber for discharging gas from inside the chamber, a roll driving unit for forward and reverse rotations of the first rotating roll and the second rotating roll. INDEPENDENT CLAIMS are also included for: (1) producing graphene, comprising (a) preparing a metal foil roll having both sides connected to the first rotating roll and the second rotating roll respectively, (b) performing heat treatment on the metal thin film which is moved between the first rotating roll and the second rotating roll while rotating the first rotating roll and the second rotating roll in one direction, (c) growing graphene on the metal thin film which is moved between the first rotating roll and the second rotating roll while rotating the first rotating roll and the second rotating roll in the opposite direction. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the device. Chamber (10) First rotating roll (20) Second rotating roll (30) Heating unit (40) Gas supply part (50)