(19)
(11) EP 0 277 619 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
23.05.1990 Bulletin 1990/21

(43) Date of publication A2:
10.08.1988 Bulletin 1988/32

(21) Application number: 88101406.2

(22) Date of filing: 01.02.1988
(51) International Patent Classification (IPC)4: D01D 5/24, D01D 4/02
(84) Designated Contracting States:
AT BE CH DE FR GB IT LI NL

(30) Priority: 05.02.1987 US 11172

(71) Applicant: AIR PRODUCTS AND CHEMICALS, INC.
Trexlertown, PA 18087 (US)

(72) Inventor:
  • Puri, Pushpinder Singh
    Macungie PA 18062 (US)

(74) Representative: Schwabe - Sandmair - Marx 
Stuntzstrasse 16
81677 München
81677 München (DE)


(56) References cited: : 
   
       


    (54) Spinneret for making hollow fibers having different wall thicknesses


    (57) The present invention is a spinneret (3) for making hollow fibers from polymeric spinning solutions and/or melts. The spinneret is characterized in that it comprises a pin mounting means (13) for detachably securing a core fluid pin (15). The detachable pin mounting design allows for the manufacture of hollow fibers having different wall thicknesses by simply changing the core fluid pins.







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