Flame-retardant zipper sleeve for wrapping an optical fiber cable bundle or an electrical cable bundle and a method of making the zipper sleeve

A highly flame-retardant zipper sleeve for wrapping a bundle of cables, the zipper sleeve comprising:

• a sheet of highly flame-retardant material, wherein the highly flame-retardant material is made mostly of meta-aramid fibers, the sheet having first and second sides, a top, and a bottom, the first and second sides having first and second side edges knitted therein, respectively, wherein the first and second side edges are thicker than a thickness of the sheet;
• and
• a zipper mechanism, the zipper mechanism having first and second zipper teeth rows that are directly attached to the first and second side edges, respectively, of the first and second sides of the sheet, respectively, the first and second zipper teeth rows having first and second rows of teeth, respectively, the first zipper teeth row having a first end and a second end, the first zipper teeth row having a pin located at the first end thereof, the second zipper teeth row having a first end and a second end, the first end of the second zipper teeth row having a retainer box located at the first end thereof, the second zipper teeth row having a slider of the zipper mechanism mechanically coupled thereto via a Y-channel of the slider, the slider being in sliding engagement with the second row of teeth.