Some points to note in the production of cable sheath

The thickness of cable jacket is calculated according to the standard, and the calculation formula is :D(outer diameter before extrusion)0.035+1;

Cable sheath thickness online measurement: sheath thickness =(circumference after extruding - length before extruding)/2 PI or sheath thickness =(circumference after extruding - length before extruding)0.1592;

Thinnest point of cable single core jacket: nominal value 85-0.1;

Thinnest point of cable multi-core sheath: nominal value is 80%-0.2;

The temperature of low density polyethylene sheathed extruder is raised, and the stress cracking intensity is increased. In addition, the shape stability of extruded cladding is poor, and the shrinkage rate increases.

Make good extruder body and screw cooling system, eliminate friction overheating, in order to maintain heat balance in the extrusion process, stabilize the extrusion pressure, promote even mixing of plastics, improve plasticizing quality.

To sum up, in the cable production process, we only carefully operate the equipment and strictly control the sheath thickness in accordance with the standard requirements. This can not only save resources, reduce material consumption and increase profits, but also ensure the quality of cables and create cheap products.