发明名称 |
FLAME-RETARDANT CABLE TUBING BUNDLE |
摘要 |
A flame-retardant optical fiber cable tubing (10) bundle which can be vertically mounted in the shaft of a building comprised of a plurality of tubes (10); a first thermoplastic layer (14) surrounding the tubes (10); and, a tape (16) wrapped spirally along the longitudinal axis of the first thermoplastic layer (14). A second thermoplastic layer (18) surrounds the tape. A method for complying with the UL 1666 fire test procedure for a cable tubing bundle intended for vertical installation includes the steps of liquefying a cross-sectional area of a thermoplastic layer (14) of the cable tubing bundle; forcing the flow of the liquified thermoplastic inwardly to the center of the cable tubing bundle; and, charring the liquified thermoplastic to form a cross-sectional area of solid material in the interior of the cable tubing bundle. |
申请公布号 |
WO9425884(A1) |
申请公布日期 |
1994.11.10 |
申请号 |
WO1994US04627 |
申请日期 |
1994.04.26 |
申请人 |
FURON COMPANY |
发明人 |
GORIAN, JAMES, D.;BONNES, EUGENE, D. |
分类号 |
G02B6/44;(IPC1-7):G02B6/00;G02B6/36 |
主分类号 |
G02B6/44 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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