Core Features

1. High dimensional stability and controllable shrinkage. The shrinkage rate after forming is stable, and the fiber excess length can be precisely controlled through formula adjustment. It has low deformation under temperature changes, preventing increased attenuation caused by loose tube shrinkage squeezing optical fibers.

2. Excellent mechanical properties. It features high rigidity, tensile resistance, impact resistance and radial crush resistance. Thin-wall extrusion still maintains sufficient strength to protect the internal optical fibers.

3. Good hydrolysis resistance. It resists hydrolysis in humid underground environments and is not prone to embrittlement and cracking during long-term buried and pipeline application. It has excellent compatibility with optical cable filling gel (cable grease), without swelling or erosion by the grease.

4. Suitable thermal properties. Its melting point is about 225℃, which meets the requirements of high-speed secondary sheathing extrusion processing. It is stable under short-term heating and has good low-temperature toughness, suitable for outdoor optical cables.

5. Superior insulation. It delivers stable electrical insulation performance. As a non-metallic material, it will not interfere with optical signal transmission.

6. Easy coloration. It can be matched with special PBT color masterbatch to produce 12-color loose tubes for convenient fiber sequence identification.

Materials with other characteristics – please inquire separately.