| 摘要 |
PROBLEM TO BE SOLVED: To make the thickness spots of an applied resin layer small by grasping the coating agent drying state of a resin film continuously immediately after the passage of a drying process and before a drawing process and doing feedback of the information to the heating of the drying process. SOLUTION: A thermometer 21 for measuring the temperature of a film is installed between a preliminary heating/drying process and a drawing process. The temperature of a monoaxially drawn film 7 which is dried preliminarily by nozzles 16a, 16b and coated with a coating agent is measured by the thermometer 21 before being subjected to width direction drawing. By film temperature measurement by the thermometer 21, a coating agent drying state is grasped, and a detected value signal by the thermometer 21 is sent to an operation apparatus 22, compared with a preset temperature, and judged whether a film temperature reaches a prescribed temperature or not. Information based on the judgement is sent to a controller 23, and heating in the preliminary heating/drying process is controlled on the basis of output from the controller 23. |
