Abstract: A method and apparatus for winding or rewinding a film wherein a pressurized jet of air is directed onto a surface of an unsupported portion of the film being wound or rewound. The air jet is elongated transversely of the length of said film. Simultaneously with the application of the air jet to the film the air impinging on the surface of the film is collected by suction.

Abstract: The first-state jacketed roller in an apparatus for spin drawing synthetic fiber comprises a roller rotatably mounted on a shaft and encompassing a fixed, non-rotatable inner core. The roller includes an electrically conductive tubular member coaxial with, and hermetically affixed to, the inner wall of the roller. A plurality of bore holes extend in the conductive member parallel to the roller axis and are coextensive therewith, and a heat transfer fluid fills each bore hole. The fluid divides into a liquid and a vapor phase when the roller is heated and rotation of the roller forces the liquid phase outwardly under centrifugal force into engagement with the outer portion of each bore hole.