2 high efficient extruders are equipped for PLB HDPE ducts production line, one for extruding outer HDPE layer, the other for extruding inner coated silicon layer. KAIDE is the China only company who can produce PLB duct in high line speed with diameter 20-90mm, while 32/28mm, 40/33mm, 50/42mm is more popular in the market.
PLB ducts are widely used as protective sheating for communication cables because of the inner silicon layer has the effect of permanent lubrication.
When optical fiber cables or communication cables are installed by pulling or blowing techniques into the plb duct, the silicone coating ensures permanent lubrication & low co-efficient of friction. Thereby, the surface of the communication/optical fiber can be protected from mechanical damage when entering or pulling into the PLB duct.