Ring spinning method and a yarn made thereby
AssigneeRieter Machine Works, Ltd.
InventorsAngelo Lucca, Herbert Stalder
Life of this patent
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Abstract
The ring spinning method drafts a silver in a multi-stage drafting system where the silver acquires a total draft in a range of from 60 to 150-fold. Following outlet from the last nip of the drafting system, the drafted silver is conveyed without drafting over a guide path in which the fiber band is condensed to form a compact fiber strand of not more than 2.5 millimeters width and preferably less than 15 millimeter in width. At the end of the guide path, the fiber strand passes through a twist inhibiting nip between two rollers and is then passed by twist distribution to a ring spinning device. The yarn produced possesses a high quality with respect to hairiness and neps.
Claims13
A ring spinning method comprising the steps of
- drafting a fiber strand, respectively in a multi-stage drafting system to a total draft in a range of from 60- to 150-fold;
- conveying the drafted fiber strand, respectively from the drafting system without drafting over a defined guide path to a twist inhibiting nip between two rollers;
- condensing the fiber strand, respectively along said guide path to form a compact fiber strand of not more than 2.5 mm in width;
- and
- delivering the compact fiber strand while twisting the fiber strand, respectively to a ring spinning device for twisting into a fully spun yarn having a fineness within a range of from Ne 6 to Ne 16.
A ring spinning method comprising the steps of
- drafting a fiber strand in a multi-stage drafting system to a total draft in a range of from 80- to 100-fold;
- conveying the drafted fiber strand from the drafting system without drafting on a rotating suction roller in a defined guide path while maintaining the fiber strand thereon to a twist inhibiting nip between the suction roller and another roller;
- condensing the fiber strand on the rotating suction roller along said guide path to form a compact fiber strand of not more than 2.5 mm in width;
- and
- delivering the compact fiber strand from said twist inhibiting nip while twisting the fiber strand to a ring spinning device for twisting into a fully spun yarn having a fineness within a range of from Ne 6 to Ne 16.
A ring spinning method comprising the steps of
- drafting a fiber strand in a multi-stage drafting system to a total draft greater than 80-fold;
- conveying the drafted fiber strand from the drafting system without drafting on a rotating suction roller while maintaining the fiber strand thereon to a twist inhibiting nip between the suction roller and another roller;
- condensing the fiber strand on the suction roller to form a compact fiber strand of not more than 2.5 mm in width;
- and
- delivering the compact fiber strand from said twist inhibiting nip while twisting the fiber strand to a ring spinning device for twisting into a fully spun yarn having a fineness within a range of from Ne 6 to Ne 16.
Dependencies are inferred from the claim text.