Earth fiber optic

This type of cable is generally used in infrastructure and intercity networks in long distances and is buried directly in the ground. This cable has a serrated steel tape protector with a polymer coating (Crogate). Based on the request of the applicant, other cable structures can also be produced.

Structure of dry earth optical fiber cable (OBUC)
Central Strength member: The central resistant layer has a non-metallic material that has resinized fibrous fibers.
Water Swellable Yarn: Two moisture and water absorbing yarns are woven around the FRP in a crescent shape to prevent water and moisture from entering the cable.
Loose tube: The ingredients of loose tube are PBT (Polybutylene terephthalate). Loose tube is stranded around FRP in SZ mode.
Thixotropic Jelly: Known as cold jelly, it is used to prevent water and moisture from penetrating into the loose tube to protect the optical fiber.
Water Sellable Tape: A layer of moisture absorbent tape with a small amount of overlap on the loose tube is used to prevent water and moisture from entering the fiber optic cable.

which includes the following materials:

Polyester non-woven fabric
Water Soluble Powder
Corrosion inhibitor

Rip Cords: There are two rip cords under the first jacket and two rip cords under the second jacket for easy stripping of the silk cable.
First Jacket: The first coat of a polyethylene layer, mostly LDPE, is coated on the moisture absorbent tape.
Armoring: Corrugated steel tape that increases the cable’s resistance to shocks.
Outer Jacket: The material of the outer jacket is mostly HDPE. This layer is responsible for the main protection of the cable.

In some special cases, thermoplastics are used instead of polyethylene for military cables.

Click on the PBN-B1-000-FINAL link to get the datasheet.