Longitudinally-wrapped nonmetal reinforcing band for optical cable with novel structure

Abstract

The invention provides a longitudinally-wrapped nonmetal reinforcing band for an optical cable with a novel structure, which consists of an adhesive, fibers and (or) FRP rods, wherein the adhesive bonds the fibers and (or) the FRP rods into a longitudinally-wrapped band-shaped body; the extension directions of the fibers and (or) the FRP rods are the same as the extension direction of the longitudinally-wrapped band-shaped body; and the cross section of the nonmetal reinforcing band is quadrangle or similar to the quadrangle. In the process of processing the optical cable, the longitudinally-wrapped nonmetal reinforcing band is longitudinally wrapped or lapped outside the beam tube or the cable core in a butt joint mode, and then the sheath is extruded, so that the longitudinally-wrapped nonmetal reinforcing band is tightly attached to the central beam tube in a 360-degree range, and the central beam tube, the longitudinally-wrapped nonmetal reinforcing band and the sheath form an organic whole. In the optical cable, the longitudinally-wrapped nonmetal reinforcing band has the functions of tensile resistance, compression resistance, moisture resistance, optical cable retraction resistance, rat bite resistance and the like.

Description

technical field [0001] The invention relates to a strengthening member for optical cables, in particular to a non-metallic strengthening material for optical cables, in particular to a new structure longitudinally wrapping non-metallic strengthening tape for optical cables. Background technique [0002] In the prior art, the ribbon-shaped non-metallic reinforcing material used for optical cables is mainly used in the central beam tube (or loose tube) or outside the cable core of the optical cable (it can also be used for cables. For convenience, in This is only for use in optical cables, especially outside the central bundle tube), butt joint longitudinal package, and then extrude a layer of sheath on the outside. its structure see image 3 Shown: including a sheath 11 , a non-metallic reinforcement band (tube) 22 , a central bundle tube 33 , an optical fiber or an optical fiber ribbon 44 , and a fiber paste 55 . A plurality of optical fibers or optical fiber ribbons 44 are...

AI Technical Summary

Problems solved by technology

[0005] The technical problems in the prior art to be solved by this invention are: 1. Solve the problem that the existing optical cable ribbon-shaped non-metallic reinforcing material is soft at normal temperature and below (in order to longitudinally wrap the ribbon-shaped non-metallic reinforcing material). The reinforcing material can fit tightly with the central beam tube at 360゜)

2. To solve the problem of blindly increasing the hardness (or rigidity) in order to have sufficient longitudinal support, so that the strip cannot form a complete "O" shape (viewed from the cross section) after longitudinal wrapping

Images