Our company boasts multiple extrusion production lines, with diameters currently reaching 1600mm. Our daily production capacity is 20 tons.

      During the extrusion process, the outer sleeve is treated with corona polarization and fixed-length shaping. The polarization equipment is a fully integrated unit developed by our factory based on new technology at home. The principle involves polarizing the non-polar polyethylene molecules through overvoltage, creating a layer of polar molecules on the inner surface of the polyethylene, thereby enhancing the adhesion between polyethylene and polyurethane foam. This ensures that the bonding strength of the high-density polyethylene outer sheath with the polyurethane foam meets the standard's specified value.

      High-density polyethylene outer sheath processing and manufacturing utilizes internal pressure and outer diameter shaping technology, as well as qualified polyethylene pellets. These are processed through an automatic feeding and drying unit, followed by plasticizing extrusion, pressure sizing, spray cooling, axial traction, sealing devices, corona polarization, and pipe cutting, resulting in continuous production.