G - Physics – 02 – B
Patent
G - Physics
02
B
18/752, 88/97.6
G02B 6/00 (2006.01) B29C 47/24 (2006.01) G02B 6/44 (2006.01) H01B 13/14 (2006.01)
Patent
CA 1204011
ABSTRACT OF THE DISCLOSURE This invention relates to manufacturing a grooved cylindrical core by extrusion. The manufacturing device comprises a single rotating integral die that has a tapered rear portion and a grooved cylindrical front portion. The tapered portion surrounds a stationary central member and guides the material from a main extruder. The front portion has a bore including linear or helical channels. The sealing problems are obviated since the tapered portion and the grooved portion make up an integral die. This die further enables to produce a grooved core perfectly gauged. According to another aspect, the threads or stripes between core grooves are identified by means of auxiliary extruders feeding predetermined die channels with extrusion materials having different colours. This stripe identification is particularly used for a core constituting the central strand of an optical cable.
414273
Robic Robic & Associes/associates
Societe Anonyme de Telecommunications Et Societe Industrielle de
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