Method for producing a spinning nozzle plate

Details Method for producing a spinning nozzle plate Method for producing a spinning nozzle plate

C - Chemistry, Metallurgy

25

D

96/225, 18/571,

C25D 1/08 (2006.01) B23P 15/16 (2006.01) D01D 4/02 (2006.01) G03F 7/26 (2006.01)

Patent

CA 1293950

ABSTRACT OF THE DISCLOSURE A spinning nozzle plate having nozzle capillaries is produced by depositing a layer 11 of a material whose characteristics can be changed by high-energy radiation (resist material) on a galvanic electrode 12. After resist layer 11 is irradiated in a predetermined pattern and after resist material is selectively removed by a treatment which utilizes the different material characteristics resulting from the irradiation, columns of resist material remain on galvanic electrode 12 to serve as negatives 21 of the nozzle capillaries. A galvanic layer 31 which encloses the negatives 21 of the nozzle capillaries is then produced on the galvanic electrode 12. Then the galvanic layer 31 is levelled and the negatives 21 are removed, as is the galvanic electrode 12. The process is particularly useful for producing spinning nozzle plates having nozzle capillaries with profiles of a special shape, especially if the cross- sectional dimensions of the nozzle capillaries are small.

509340

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