The silane crosslinded cable compounds (also know as sioplas or PEX-B) are now widely used in the wire and cable industry as an insulating material for low-voltage power cables (≤ 10KV). It is two-step reactive extrusion process. Here we introduce the first step, which is to inject silane-peroxide mixture into the melt polyethylene to get a grafted polyethylene. Achieving a high grafting rate depends on the highly distributed dispersion of the compounding system, precise temperature control and residence time of the material in the extruder.

offer several specific benefits

Co-kneader’s unique combination of screws, pins and barrels can provides low shear which will reduce the breakage to materials’ physical character.

The process temperature can be controlled in a narrow zone by precise temperature control of each zone.

Liquid peroxide is strictly metered and mixed with pellets separately to assure the best quality of compounds.

Co-kneader’s multiple flights interacted with the pins provides excellent kneading  effect by increasing the mixing circles. Excellent mixing can minimize the use of silane quantity.

Liquid ingredients can be conducted into melts at designated position which helps customer to achieve the best formula solution.

Co-kneader’s screw profile can be changed by adjusting the serial of modular designed screw. It makes the compounding system adaptable to all requirements.