In domestic secondary coating process

it adopts the traditional tube filling injection system mostly

but with the constant improvement speed of secondary coating equipment

the disadvantages of traditional tube filling injection system underline gradually. And in order to solve lump

optic fiber broken and other problems in the traditional tube filling injection system with high-speed production. According to the ribbon cable’s tube filling coating device

it developed dispersion fiber’s secondary tube filling coating device. This paper mainly analyzes the advantages of the tube filling coating device in the production process.