Spinneret for wet spinning
View Patent ↗In a wet spinning spinneret comprising a housing which, together with a spinneret plate mounted to the underside thereof, forms a chamber adapted to be supplied with a spinning solution, the spinneret plate having nozzle openings in at least an annular region, and a displacing member arranged inside the chamber above the spinneret plate, which member directs the spinning solution towards the annular zone, it is provided that the displacing member (VK) is attached at a support (TP) arranged upstream of the spinneret plate (SP), seen in the flow direction of the spinning liquid.
1. A wet spinning spinneret comprising:
a housing which, together with a spinneret plate mounted to the underside thereof, forms a chamber adapted to be supplied with a spinning solution through a spinning solution supply inlet in the housing, the spinneret plate having nozzle openings in at least an annular region, and
a displacing member arranged inside the chamber above the spinneret plate, which member directs the spinning solution towards the annular zone,
wherein the displacing member is only attached to a support unit arranged upstream of the spinneret plate, seen in the flow direction of the spinning liquid, and wherein the displacing member comprises a first part and a second part, the first part being provided above the support unit and having a free end facing towards the spinning solution supply inlet, and the second part being arranged at the underside of the support unit.
2. The wet spinning spinneret of claim 1 , wherein the support unit comprises a support plate with a plurality of flow channels.
3. The wet spinning spinneret of claim 2 , wherein the support unit comprises a filter plate configured to have the spinning liquid flown through it arranged upstream of the support plate.
4. The wet spinning spinneret of claim 3 , wherein the displacing member comprises a screw connection passing through the support plate.
5. The wet spinning spinneret of claim 4 , wherein the first part of the displacing member provided above the support plate is formed as a pointed head of a nut.
6. A wet spinning apparatus comprising the wet spinning spinneret of claim 1 , and a flow deflection device configured to be arranged in a spinning bath during a spinning process at a position opposite a central portion of the spinneret plate having no nozzle openings, the flow deflection device being configured to introduce a coagulation liquid into the central portion during the spinning process.
7. The wet spinning apparatus of claim 6 , wherein the flow deflection device is shaped as a tube having outlet openings in its shell surface for the coagulation liquid.
8. The wet spinning spinneret of claim 2 , wherein the displacing member comprises a screw connection passing through the support plate.
9. The wet spinning spinneret of claim 8 , wherein the first part of the displacing member provided above the support plate is formed as a pointed head of a nut.