Insulated core wire is the basis of cable production, and the quality of the core wire has a crucial impact on subsequent processes. There are mainly two methods for the insulation core wire of high-speed cables. The first is the physical foamed polyolefin material, which has a skin-bubble-skin structure for insulation. The size of the wire cells is uniform, the distribution is uniform, and the mechanical strength and insulation adhesion are high. , In this process, the production equipment is required to have online monitoring and control functions to ensure that the core wire is uniform and stable. The controlled process parameters include the diameter of the core wire, the capacitance in the water, the concentricity, etc.;
The second is the fluoroplastic process of Teflon. Since the high temperature of Teflon is a process guaranteed by physical high performance, the raw materials all contain chemical components in the production process, and temperature control has important guiding significance for the internal molecular structure or fusion finger. Abnormal phenomena will inevitably occur in the production process. If the temperature of the production line is too high, it is not within the scope of the process requirements, and it cannot be cooled and heated in time, there will be residual black spots or other abnormal phenomena, so there are important guidelines for the material selection of the equipment and the temperature level it can withstand.
