| 摘要 |
#CMT# #/CMT# A hollow fiber spinning nozzle comprises a base element with precipitating agent/support agent as well as inlet channels together with a nozzle structure with an outflow opening and a needle with a borehole for a precipitating agent. The base element comprises at least two microstructured flat bodies brought together. #CMT#USE : #/CMT# In the production of polymeric hollow fiber membranes. #CMT#ADVANTAGE : #/CMT# Fine capillary membranes can be produced using the nozzle, the manufacturing tolerances being minimized so as to reduce the cost of the nozzle. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a hollow fiber spinning nozzle. 10 : nozzle 26 : base element 30 : single plates 36 : in-flow equalization zone 38 : precipitating agent inlet borehole 40 : needle tip 42 : outflow opening 44 : needle 46 : precipitating agent needle borehole #CMT#POLYMERS : #/CMT# Preferred Materials: The nozzle comprises monocrystalline silicon, gallium arsenide or germanium. Preferred Construction: The outflow opening is in the form of a split ring. In one embodiment, one of the flat bodies or plates includes the inlet, the in-flow equalization zone, the precipitating agent inlet borehole and the needle tip while the other body includes the split ring and the needle with the precipitating agent borehole. The base preferably comprises three plates. The outer diameter of the multi-channel nozzle is below 1 mm (especially 0.45 mm or below). The thicknesses of the first and second plates are 0.250-1.500 mm and 0.050-1.500 mm respectively; the needle outer diameter is 0.020-1.500 mm; total needle length is 0.100-2.000 mm; precipitating agent borehole diameter is 0.010-1.000 mm; split ring outer diameter is 0.040-3.000 mm; split ring length is 0.050-1.500 mm; split ring height is 0.300-3.000 mm; and split ring edge length is 1.00-25.00 mm. #CMT#EXAMPLE : #/CMT# None given in the specification. |
