| 摘要 |
An apparatus for spinning includes a polymer inlet zone and a spinneret assembly. A first metering pump for pumping a first set of molten polymer streams of equal flow rate to the polymer inlet zone and a second metering pump for pumping a second set of two molten polymer streams of equal flow rate to the polymer inlet zone are provided. The second pump having twice the capacity of the first pump. The spinneret assembly comprises a pair of spinnerets interchangeably locatable in the spinning pack. One of the spinnerets is adapted to combine the first set of streams to produce three ends of filaments and the other of the spinnerets is adapted to combine each of the first streams with a respective one of the second streams to provide two ends of filaments.
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