| 摘要 |
A method and apparatus for extruding a wide variety of plural-component fiber configurations in a spin pack utilizes one or more disposable distributor plates in which distributor flow paths are etched. The etching process permits very thin metal plates to be employed, rendering the fabrication expense for the plates so small, relative to the remainder of the spin pack, as to justify discarding or disposing of the plates rather than periodically cleaning them. The etching process also permits the etched distribution paths to be such as to increase the fiber yield per given spinneret surface area. It also permits the distribution paths to be sufficiently small that the resulting extruded fiber can be made up of at least one hundred side-by-side sub-fibers. If the adjacent sub-fibers are weakly bonded, they can be readily separated by agitation to increase the effective yield from the spin pack and provide very fine and uniform fibers. |
