Controlled injection process for a tube protecting optical fibers and installation for performing said process

摘要

The filling tube (8) is inserted in a protection tube (2), as well as a filler into the protection tube. Three detectors (15,16,17) are mounted along the outside of the tube, and the central detector measures the advancing position of the filler, and controls the filler input (9) rate. The other two detectors are secondary detectors checking the start and end of filling.