DEVICE HAVING REDUCED FRICTION PROPERTIES

摘要

The cover disk for a signaling system in railway areas and street area and for display- and traffic light device in traffic and scoreboard, comprises a substrate (100) on which a coating (110) is applied, which has a surface (112) with a friction coefficient of 0.03-0.09. The substrate is a soda-lime glass disk or a borosilicate glass disk that is obtained by drawing process, floating technology or a cast- or roller glass, or a pressing glass with or without a structuring, or a plexi glass substrate with or without a structuring, or a composite glass disk. The cover disk for a signaling system in railway areas and street area and for display- and traffic light device in traffic and scoreboard, comprises a substrate (100) on which a coating (110) is applied, which has a surface (112) with a friction coefficient of 0.03-0.09. The substrate is a soda-lime glass disk or a borosilicate glass disk that is obtained by drawing process, floating technology or a cast- or roller glass, or a pressing glass with or without a structuring, or a plexi glass substrate with or without a structuring, or a composite glass disk. The coating comprises an antireflection coating on which a cover layer (122) is arranged, and the surface of the cover layer has a friction coefficient of 0.01-0.12. The coating has a contact angle of greater than 80[deg] at the external surface. The substrate has a first and second disc and the coating is applied on the first side (114.1) and/or the second side (114.2) of the cover disk. The reflectivity of the coating is 0.1-1.5%. The antireflection coating is applied by a fluid technology, where the layer applied by the fluid technology is placed by subsequent technologies. The antireflection coating is applied as multilayer-interference coating, as interference coating or as triple-layer interference coating by the sol-gel-technology, where the refractive index of the first layer is 1.6-1.8, the second layer is 1.9-2.5 and the third layer is 1.4-1.5. The antireflection coating is produced by high vacuum technology as three to seven layer-interference coating system or as single layer interference coating system. The antireflection coating is produced by sputtering process and evaporation process, under high vacuum or by chemical vapor deposition (CVD)-process such as online- or offline-CVD-process, or by etching process as porous layer or as light diffusing surface. The substrate has a structuring in the form of beam-forming element that is applied on the back side and/or front side of the cover disk. An independent claim is included for a signaling system in railway areas and street area, or a display device.