| 摘要 |
<p>A fibre felt forming die assembly and method employ a mandrel having an external forming surface, an outer die extending around the mandrel and having an internal forming surface spaced from the mandrel external forming surface to define a gap for the advance of a felt therebetween. A heater is provided for heating the mandrel to thereby heat and at least partially cure the felt at and adjacent a surface of the felt facing the mandrel as the felt passes through the gap, and hot gas is then discharged through the entire thickness of the felt to further cure the felt. To counteract deposition of bonding material from the felt on the mandrel, an arrangement is provided for cooling the felt prior to the heating of the felt by the mandrel, so that the felt undergoes a rapid temperature transition.</p> |
