| 摘要 |
Flexible plastic tubing construction adapted for receiving a contents such as multi-fiber optical cables used in air blown fiber (ABF) installations. The tubing is formed as having a first sidewall segment formed of a first polymeric material which is generally opaque, and a second sidewall segment formed integrally with the first sidewall segment of a second polymeric material which is generally transparent. The second sidewall segment has an axial inner surface which defines at least a portion of the innermost surface of the tubing, and an axial outer surface which defines a portion of the outermost surface of the tubing. The inner and outer surfaces further define a window therebetween through the thickness dimension of the tubing sidewall, with the contents of the tubing being viewable through the window.
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