5G optical fiber sheath taking PBT copolyester as matrix and production line of 5G optical fiber sheath

The utility model discloses a 5G optical fiber sheath taking PBT copolyester as a matrix and a production line thereof, the 5G optical fiber sheath comprises a plurality of optical fibers, each optical fiber is sleeved with an optical fiber protective sleeve, the optical fiber protective sleeve is externally provided with a protective sleeve, and the protective sleeve is provided with a plurality of optical fibers. And the protective sleeve comprises a first non-metal protective layer, a second non-metal protective layer and a third non-metal protective layer which are sequentially arranged from inside to outside. According to the utility model, the shape regularity and the longitudinal uniformity of the cross section of the optical fiber can be improved, and the stability and the tension resistance of the optical fiber are improved. 本实用新型公开了一种以PBT共聚酯为基体的5G光纤护套及其生产线，所述5G光纤护套包括若干光纤，各个所述光纤外均套设有光纤保护套，所述光纤保护套外设有防护套，所述防护套包括由内至外依次布置的第一非金属保护层、第二非金属保护层、第三非金属保护层。本实用新型能够提高光纤的横截面形状规则性和纵向均匀性，提高光纤的稳定性和抗拉能力。