그 후, 40℃에서 6분간 건조시켜서, 튜브의 표면에 중간층과 윤활층이 순차 적층된 튜브를 얻었다.
It was dried at 40°C for 6 min to obtain a tube in which the intermediate layer and a lubricating layer were sequentially laminated on the surface of the tube.