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US 2016/0103288 A1Published application
Optical fiber cables with polypropylene binder
AssigneeOFS Fitel, LLC
InventorsStefan Jost, Georg Koebler, Benjamin Mohle, Johannes Stocker, Werner Negele
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Abstract
An optical fiber cable includes a bundle of a plurality of semi-ridged loose tubes held by a polypropylene binder. The polypropylene binder sustains the heat when a hot cable sheath is applied during the cable manufacturing process. This prevents the polypropylene binder from shrinking and cutting into the loose tubes, which cause indentations. Therefore, the resulting optical fiber cable is substantially free from indentations.
Claims17
An optical fiber cable comprising:
- a cable core comprising at least two loose tubes having a plurality of optical fibers, where the loose tube is a semi-rigid tube having a flexural modulus of greater than or equal to 1,300 MPa;
- a polypropylene binder gripping the cable core to form a bundle;
- and
- a cable sheath surrounding the bundle,
- whereby the cable core is substantially free from indentations.
2 more elements
A method of making an optical fiber cable comprising the steps of:
- grouping at least two loose tubes having a plurality of optical fibers together to form a cable core;
- gripping the cable core with a polypropylene binder to form a bundle;
- and
- applying a cable sheath onto the bundle,
- wherein the loose tubes are semi-rigid tubes having a flexural modulus of greater than or equal to 1,300 MPa, and the optical fiber cable is substantially free from indentations.
2 more elements
Dependencies are inferred from the claim text.