Filament yarns of multicomponent fibers and utilization therefor

Details Filament yarns of multicomponent fibers and utilization therefor Filament yarns of multicomponent fibers and utilization therefor

1981-09-23

1984-05-08

Bell, James J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including interlaminar mechanical fastener

28159, 57247, 57248, 57284, 156 85, 156155, 156296, 1563084, 264147, 264171, 428228, 428253, 428257, 428374, D03D 300

Patent

active

044474890

ABSTRACT:
Filament yarns composed of multicomponent fibers of the matrix/segment type are produced and processed into textile fabrics by false-twist texturing the multicomponent fibres made up of segments of varying deniers to cause softening the matrix to bond the filaments together over short, medium or longer sections of the yarn. After conversion of the yarns into fabrics, the fabrics are subjected to a shrinking treatment. The fabrics so treated have a reduced tendency to crease or wrinkle, better crease recovery and better dyeing properties. The denier of the lower denier segments should be finer than 0.6 dtex and the denier of the high denier segments should be at least 1 dtex; the weight ratio of low to high denier segments in the yarn ranges from about 25:75 to about 75:25. The matrix is preferably made of polyamide 6 while the segments are polyethylene terephthalate. The cross-sectional shapes of the fibers may e.g. resemble a toothwheel with fine peripheral segments and a coarser core, combinations of three-toothed wheels with 12 or 6 peripheral teeth or similar combinations of orange-shaped cross-sections such as 3 and 6 "slices".

REFERENCES:
patent: 4239720 (1980-12-01), Gerlach et al.
patent: 4364983 (1982-12-01), Brucher et al.

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