FLEXIBLE PLASTIC TUBING CONSTRUCTION HAVING A SIGHT GLASS WINDOW

摘要

Flexible plastic tubing construction (109) 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 (20) formed of a first polymeric material which is generally opaque, and a second sidewall segment (22) formed integrally with the first sidewall segment of a second polymeric material which is generally transparent. The second sidewal l segment has an axial inner (36) surface which defines at least a portion of the innermost surface of the tubing (16), and an axial outer surface (34) which defines a portion of the outermost surface of the tubing (14). The inn er and outer surfaces further define a window tubing (14). The inner and outer surfaces further define a window (40) therebetween through the thickness dimension of the tubing sidewall, with the contents of the tubing being viewable through the window.