Drawing frame-roving frame combination for the production of rove by means of a pneumatic spinning process
AssigneeMaschinenfabrik Rieter AG
InventorsChristian Griesshammer, Herbert Stalder
Life of this patent
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Abstract
A drawing frame-slubbing machine combination for manufacturing a roving yarn from a fiber assembly is disclosed. The drawing frame-slubbing machine combination includes a drawing frame for doubling and stretching a fiber assembly into a drafter sliver and a slubbing machine with a twist application component configured to apply a true twist to the drafter sliver by one or more air flows.
Claims20
A drawing frame-slubbing machine combination for the manufacture of a roving yarn from a plurality of fiber assemblies, comprising:
- a first section comprising a drawing frame configured to produce a sliver from the plurality of fiber assemblies;
- and
- a second section arranged downstream of said first section, said second section comprising a spinning position, said spinning position comprising a twist application component comprising a swirl chamber;
- wherein said sliver is at least partially subjected to a true twist inside said swirl chamber by an air flow, said twist being a protective twist the result of which the roving yarn remains capable of being drafted.
A method of manufacturing a roving yarn from a plurality of fiber assemblies, the method comprising:
- providing a drawing frame-slubbing machine combination comprising a first section comprising a drawing frame and a second section arranged downstream from said first section, said second section comprising a spinning position having a twist application component comprising a swirl chamber;
- doubling and stretching said fiber assembly in said drawing frame of said first section of said drawing frame-slubbing machine combination to produce a drafter sliver;
- stretching said drafter sliver to produce a drafted sliver;
- at least partially subjecting said drafted sliver to a true twist application in said swirl chamber by an air flow, said twist application being a protective twist the result of which the roving yarn remains capable of being drafted.
Dependencies are inferred from the claim text.