Textiles: spinning – twisting – and twining – Apparatus and processes – Open end spinning
Patent
1999-02-25
2000-04-11
Stryjewski, William
Textiles: spinning, twisting, and twining
Apparatus and processes
Open end spinning
57 5849, 57408, D01H 400
Patent
active
060475374
ABSTRACT:
In a method for producing a twisted yarn by an integrated spinning and twisting process, individual spun yarns are spun from loose fiber material in at least two spinning devices. The spun yarns are combined and guided in a first direction and subjected to a common first twisting to form a once twisted yarn. The once twisted yarn is then guided in a second direction opposite the first direction according to the two-for-one twisting principle, to form a yarn balloon in order to subject the once twisted yarn to a second twisting. The resulting yarn is then fed through a centering point to a winding device. The loose fiber material is fed into the annular chamber, that is coaxial to the yarn balloon and in which the yarn balloon freely rotates, and is guided substantially radially through the yarn balloon such that the yarn of the yarn balloon directly passes through the loose fiber material. The loose fiber material is then conveyed from the annular chamber substantially radially inwardly into the spinning devices by a pressure gradient.
REFERENCES:
patent: 5479771 (1996-01-01), Ballhausen et al.
patent: 5626011 (1997-05-01), Ballhausen et al.
patent: 5628177 (1997-05-01), Ballhausen et al.
Beckmann Markus
Greis Roland
Kross Stefan
Ruetten Wilfried
Spix Guido
Stryjewski William
Volkmann GmbH & Co.
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