| 摘要 |
The invention provides an apparatus for manufacturing lengths of tubular fibrous pipe insulation, the improvement comprising the provision for an abrasive treatment apparatus comprising conveyor means operable to receive such lengths mounted on their respective forming mandrels after setting the binder and to forward said lengths on said mandrels to an abrasive treatment station, an abrading member at said station to abrade the outer surface of said lengths and a member to rotate a length, on its mandrel, in contact with said abrading member while maintaining a controlled spacing between the mandrel and the abrading member. |
