Do extrusion and sheathing belong to the same process in cable industry?

Belong to. Wire and cable products are generally composed of conductor, insulation, shielding, armor and sheath, among which insulation and sheath belong to extrusion, and extrusion is a very important process of cable. Because the extruder has the characteristics of continuous extrusion, the production process of plastic insulation and sheath is also continuous and belongs to the same process. As far as wire and cable production is concerned, the difference between product specifications and extruded parts often determines some changes in extrusion equipment and process parameters. But in general, the extrusion coating process of various products and parts is similar.