摘要 |
<p>The fence, positioned across a track (2) between two hedges (3), consists of supports (4) for one or more cross-members (5), each made from a foam-filled plastic tube. Each tube can have a corrugated outer surface and is preferably made by co-extruding a smooth inner tube inside a corrugated outer one, with cavities between their facing surfaces. The fence, positioned across a track (2) between two hedges (3), consists of supports (4) for one or more cross-members (5), each made from a foam-filled plastic tube. Each tube can have a corrugated outer surface and is preferably made by co-extruding a smooth inner tube inside a corrugated outer one, with cavities between their facing surfaces. The supports are attached to the tubes by hoops (10) set in the troughs of the corrugated surfaces.</p> |