(19)
(11) EP 1 609 891 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
28.02.2007 Bulletin 2007/09

(43) Date of publication A2:
28.12.2005 Bulletin 2005/52

(21) Application number: 05077201.1

(22) Date of filing: 13.06.2000
(51) International Patent Classification (IPC): 
D01G 1/08(2006.01)
 D02G 3/34(2006.01)
(84) Designated Contracting States:
CH DE FR GB IT LI NL
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 14.06.1999 US 139096 P

(62) Application number of the earlier application in accordance with Art. 76 EPC:
00938266.4 / 1255881

(71) Applicant: E.I. du Pont de Nemours and Company
Wilmington, DE 19898 (US)

(72) Inventors:
  • Perrotto, Joseph Anthony
    Landenberg, PA 19350 (US)
  • Popper, Peter
    Wilmington, DE 19810 (US)
  • Simmonds, Glen E.
    Avondale, PA 19311 (US)
  • Tam, Albert S.
    Hockessin, DE 19707 (US)
  • Visser, David Carlton
    Wilmingtin, DE 19808 (US)
  • Walker, William Charles
    Wilmington, DE 19802 (US)
  • Jones, Joseph Leonda
    New Castle, DE 19720 (US)
  • Artzt, Peter, Institut fur Textil-unol
    73770 Denkendorf (DE)
  • Mueller, Heinz, Institut fur Textil-unol
    73770 Denkendorf (DE)

(74) Representative: Cockerton, Bruce Roger et al
Carpmaels & Ransford, 43-45 Bloomsbury Square
London WC1A 2RA
London WC1A 2RA (GB)

   


(54) Stretch break method and product


(57) A method for stretch breaking fibers to produce a staple yarn and operating a staple fiber spinning machine that enables the production of a plurality of products of lot size smaller than a large denier tow product. The process includes at least two break zones and a consolidation zone downstream from a second break zone to form a staple yarn. The filaments are broken in a second break zone downstream from the first break zone by increasing the speed of the fiber fed into the process.







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