(19)
(11) EP 0 375 242 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
22.11.1990 Bulletin 1990/47

(43) Date of publication A2:
27.06.1990 Bulletin 1990/26

(21) Application number: 89312927.0

(22) Date of filing: 11.12.1989
(51) International Patent Classification (IPC)5: D01H 1/115
(84) Designated Contracting States:
AT BE CH DE ES FR GB GR IT LI LU NL SE

(30) Priority: 12.12.1988 US 282488

(71) Applicant: Burlington Industries, Inc.
Greensboro North Carolina 27420 (US)

(72) Inventor:
  • Morrison, Elbert F.
    Clarksville Virginia 23927 (US)

(74) Representative: Frankland, Nigel Howard et al
FORRESTER & BOEHMERT Franz-Joseph-Strasse 38
80801 München
80801 München (DE)


(56) References cited: : 
   
       


    (54) Manufacture of roving


    (57) A process and apparatus for the production of roving uses vacuum spinning techniques. Specifically, a fibre mass, or sliver (S), is drafted through a drafting zone (14) and passed into a hollow, rotatable shaft (26), the shaft having a central through passageway (31) and a plurality of radially oriented orifices (38). The shaft (26) is mounted in a housing (24) to which a vacuum is applied as the fibre mass passes through the rotating shaft. Trailing free ends of a minor portion of the fibres are pulled into the orifices (38) and, as the linear movement of the fibres continues, are pulled back out of the orifices and are wrapped about the remaining core fibres to form a roving.







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