| 摘要 |
PURPOSE:To increase the wear resistance and the light resistance for a blade (shutter, diaphragm, etc.) for an optical machine such as a camera, by coating a thermosetting delustering coating material to a blackened polyester film with addition of an antistatic agent. CONSTITUTION:The coating 5 is applied unevenly to both surfaces of a biaxial extended polyester film 4 which is mixed with a black pigment of >=10 transmittance concentration with about 70mu thickness (to hold the physical properties of material) by means of a delustering coating material (such as a material obtained by mixing the minimum amount of silica into acrylic thermoplastic resin). In addition, an antistatic film 6 is stuck to the surface of the film 4 to obtain a blade member. |
