| 摘要 |
A system and method are provided for producing tubular products (22) such as filters from nonwoven fibers (24). The system includes a die assembly (26), a collector assembly (28) including a r otating mandrel (60), a withdrawer assembly (30), and a post-treatment assembly (32). The withdrawer assembly utilizes at least one threaded roller contacting either the inner or outer per iphery of a tube formed on the mandrel to withdraw the tube from the mandrel in a c ontrolled manner. The post-treatment assembly smoothes t he outer surfaces of the tube prior to cutting by melting loose fiber strands e xtending therefrom. The properties of the finished produ ct can be varied by altering the operation of the collector assembly and/or the withdr awer assembly. |
