| 摘要 |
<p>A laminated air brake tubing (11) includes inner (14) and outer (15) nylon layers with an intermediate fiber reinforcing layer (16). The tubing (11) further includes one and preferably two layers of high density polyethylene (26 and 18) positioned adjacent either of said nylon layers (14, 15) with a protective layer (21, 24) separating the fiber reinforcing layer (16) from the high density polyethylene layer (26 and 18). The protective layer (21 or 24) is preferably a thin layer of nylon or nylon alloy. Further, the high density polyethylene layer (26 or 18) may include compatibilizing agents preventing delamination. The air brake tubing (11) of the present invention meets the current requirements for air brake tubing (11), however it is less expensive than currently available air brake tubing (11).</p> |
