Foamed fiber optic cable
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United States of America Patent
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-
Jan 18, 2011
Grant Date -
Dec 31, 2009
app pub date -
May 27, 2009
filing date -
May 27, 2008
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A fiber optic cable includes an optical fiber, a strength layer surrounding the optical fiber, and a jacket assembly surrounding the strength layer. The jacket assembly includes a foam. A method for manufacturing a fiber optic cable includes mixing a base material, a chemical foaming agent and a shrinkage reduction material into a mixture in an extruder. The mixture is heated so that the base material and the chemical foaming agent form a foam with shrinkage reduction material embedded into the foam. An optical fiber and strength layer are fed into a crosshead. The mixture is extruded around the optical fiber and the strength layer to form a jacket assembly.
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