| 发明名称 | Method and apparatus for optical fiber coloring | ||
| 摘要 | A method of coloring optical fibers during the optical fiber drawing that includes the steps of feeding a natural fiber coating material and a colorant to a mixer; mixing the natural fiber coating material and the colorant in the mixer to obtain a colored coating material; and supplying the colored coating material to a coating die. The feeding step includes exerting on the natural fiber coating a first gas pressure variable with at least one fiber drawing parameter; and exerting on the colorant a second gas pressure variable with at least one fiber drawing parameter. | ||
| 申请公布号 | US9181125(B2) | 申请公布日期 | 2015.11.10 |
| 申请号 | US201414223205 | 申请日期 | 2014.03.24 |
| 申请人 | PRYSMIAN S.P.A. | 发明人 | Frigerio Silvio;Terruzzi Lidia;Villani Giovanni;Castoldi Corrado |
| 分类号 | C03B37/02;C03C25/10;C03C25/18 | 主分类号 | C03B37/02 |
| 代理机构 | Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P. | 代理人 | Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P. |
| 主权项 | 1. A method of coloring optical fibers during the optical fiber drawing, comprising the steps of: feeding a natural fiber coating material and a colorant to a mixer; mixing the natural fiber coating material and the colorant in the mixer to obtain a colored coating material; and supplying the colored coating material to a coating die, wherein the feeding step comprises exerting on the natural fiber coating a first gas pressure variable with at least one fiber drawing parameter; and exerting on the colorant a second gas pressure variable with at least one fiber drawing parameter; wherein said first and second gas pressures are exerted by a single pressure source; and wherein a single controllable valve controls said first and second gas pressures exerted by the single pressure source. | ||
| 地址 | Milan IT | ||