| 摘要 |
PROBLEM TO BE SOLVED: To provide a film cleaning nozzle device which can continuously remove even microdust measuring a few micrometer sticking to the surface of a plastic film, a film fragment and a smear.SOLUTION: This film cleaning nozzle device 51 is operated to clean at least one surface of the face and back surfaces of a running film 12, and comprises the following constituent components: (1) a member 53 having an upstream side flat surface part 53a and a downstream side flat surface part 53b formed in parallel to the film 12, (2) a fluid discharge aperture 52 which is arranged between the upstream side flat surface part 53a and the downstream side flat surface part 53b, of the member 53, and blasts the fluid to one surface of the face and back surfaces of the film 12, (3) a film cleaning part 54 which is a gap D between the upstream side flat surface part 53a, the downstream side flat surface part 53b and the film 12, and allows the fluid to flow along one surface of the film 12, and (4) an ultrasonic irradiation means 60 which is arranged at the member 53 and irradiates the film cleaning part 54 with an ultrasonic wave. |
