12-24core 3.0mm Air blown Micro fiber optic cable

In the past, optical cable pipelines used cement pipes (which are basically no longer used due to complex construction and high friction coefficient) or PVC plastic pipes. The traction method is generally used to lay optical cables. This method has a short cable threading distance and slow speed due to the large friction coefficient of the inner wall of the pipeline, and it is easy to cause mechanical stretching damage to the optical fiber. In order to solve the lubrication problem of the inner wall of the pipeline during the laying of optical cables, before the birth of silicon core tubes, people generally used the method of adding lubricants, that is, applying liquid lubricants to the inner wall of the pipeline. However, due to gravity, the lubricant cannot be evenly distributed on the inner wall of the pipeline, and it will be taken away by the dry optical cable in the front section. Therefore, the lubrication problem directly affects the length and speed of cable threading. At present, silicon core plastic tubes can be mass-produced in China. The silicone core tube is made of high-density polyethylene. Its characteristics are: silicone is synchronously extruded into the inner wall of the high-density polyethylene pipe to form a solid permanent lubricating layer. The lubricating layer has the same physical and mechanical properties as the high-density polyethylene pipe and will not deform even under the pressure of heavy objects. The friction coefficient of the inner wall of the silicone core tube can be ≤0.15, which is 60%-70% smaller than the friction coefficient of ordinary plastic pipes. The friction coefficient between the optical cable and the pipe is greatly reduced, thereby increasing the length of the cable threaded at one time, creating favorable conditions for the promotion of the optical cable air-blown laying process.