Separation, and phasing of sheath sliver around a core

Details Separation, and phasing of sheath sliver around a core Separation, and phasing of sheath sliver around a core

1985-12-26

1987-05-05

Watkins, Donald

Textiles: spinning, twisting, and twining

Apparatus and processes

Covering or wrapping

57210, 57315, 19243, D01H 1304, D01H 572

Patent

active

046621644

ABSTRACT:
A novel roving, and spun yarn produced from the roving, have a core and a sheath arrangement with substantially 100 percent of a first type of fiber in the sheath, and for a second type of fiber having distinctly different properties than the first fiber, about 75-90 percent in the core and about 25-10 percent in the sheath. Yarns having a cheaper fiber in the center (e.g. polyester) and a more expensive fiber on the outside (e.g. wool), or one having a higher strength core fiber and a more luxurious sheath fiber, can be produced. A sliver of first fibers and a distinct sliver of second fibers are fed in generally parallel paths. The slivers are continuously drafted to produce two distinct drafted slivers, and the path of at least one of the drafted slivers is changed so that the two slivers proceed in intersecting paths, and at substantially the same speed. The first fibers are continuously caused to wrap around the second fibers, with an angle of intersection between the two paths in the range of 60.degree.-120.degree., to produce a composite drafted sliver-roving, which is twisted to produce a roving. The roving is ring spun to produce a spun yarn with about 75-90 percent of the second fibers in the core and about 25-10 percent in the sheath, and substantially 100 percent of the first fibers in the sheath.

REFERENCES:
patent: 2728112 (1955-12-01), Berker
patent: 2731789 (1956-01-01), Holder
patent: 2990673 (1961-07-01), Adkins, Jr.
patent: 3308615 (1967-03-01), Susskind et al.
patent: 3370410 (1929-01-01), McKew et al.
patent: 3599416 (1971-08-01), Reuter et al.
patent: 3844098 (1974-10-01), Plate et al.
patent: 3844103 (1974-10-01), Sasaki et al.
patent: 3913308 (1975-10-01), Lemaire
patent: 3952372 (1976-04-01), Howell
patent: 4307566 (1981-12-01), Murata et al.
patent: 4383403 (1983-05-01), Nakayama et al.
patent: 4470254 (1984-09-01), Schultz et al.
patent: 4484436 (1984-11-01), Nakayama et al.
patent: 4495761 (1929-01-01), Nakayama et al.

Affiliated with

Also associated with

Rating

Separation, and phasing of sheath sliver around a core does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Separation, and phasing of sheath sliver around a core, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Separation, and phasing of sheath sliver around a core will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2392668