The invention discloses a micro optical fiber heat shrinkable tube, which includes an inner tube and a heat shrinkable sleeve wrapped around the outer circumference of the inner tube. The inner tube is made of cylindrical hot melt adhesive with an axially reserved optical fiber hole inside. A rectangular notch communicating with the reserved optical fiber hole is formed on the inner tube. Barbs for preventing the micro optical fiber from falling off are arranged on the inner walls on both sides of the rectangular notch, and the distance between the barbs on both sides is smaller than the diameter of the micro optical fiber. The invention has an ingenious structural design and high process feasibility. Before hot melting, the barbs on the inner tube effectively prevent optical fiber shedding. The micro optical fiber is radially inserted into the expanded rectangular notch, which significantly improves the welding qualification rate of micro optical fiber heat shrinkable tubes.
Country Code: CN
Application Number: CN201810000742.2
