A low chromatic aberration polyester different-shrinkage composite yarn is made of polyester POY yarn and polyester FDY composite yarn. The polyester POY yarn and polyester FDY yarn is obtained by spinning the polyester solution, the rupture strength of the low color polyester different-shrinkage composite yarn is 1.9 cN/dtex, the elongation at break is 30.05.0%, the crimp shrinkage is 2.503.0%, the network degree is 205/m, the color difference E is less than 0.200. In the invention, the magnesium ethylene glycol is relatively mild, the thermal degradation coefficient is small, the oligomers in the polymerization process is reduced, and the oligomers in the dissolution process are further reduced, so that the appearance of stains and streaks reduces during the dyeing and post-processing heat setting of the polyester fiber, which ensures the fiber's leveling and rubbing fastness.

A low chromatic aberration polyester different-shrinkage composite yarn is made of polyester POY yarn and polyester FDY composite yarn. The polyester POY yarn and polyester FDY yarn is obtained by spinning the polyester solution, the rupture strength of the low color polyester different-shrinkage composite yarn is 1.9 cN/dtex, the elongation at break is 30.05.0%, the crimp shrinkage is 2.503.0%, the network degree is 205/m, the color difference E is less than 0.200. In the invention, the magnesium ethylene glycol is relatively mild, the thermal degradation coefficient is small, the oligomers in the polymerization process is reduced, and the oligomers in the dissolution process are further reduced, so that the appearance of stains and streaks reduces during the dyeing and post-processing heat setting of the polyester fiber, which ensures the fiber's leveling and rubbing fastness.

A different shrinkage composite yarn and preparation method. The modified polyester is spun with a porous spinneret to produce a different shrinkage composite yarn, and the spinneret holes on the porous spinneret are arranged in an elliptical arrangement. The different shrinkage composite yarn is obtained by winding modified polyester POY yarn and FDY yarn, network recombining, and coiling them. The preparation method of modified polyester is as follows: terephthalic acid reacts with ethylene glycol to produce ethylene terephthalate. The modified polyester is obtained by the reaction of terephthalic acid with branched diol. The fiber of the invention has good properties and the deviation rate of fiber density. The CV value of breaking strength is 4.0%, the CV value of elongation at break is 8.0%, the CV value of coefficient of variation of coiling shrinkage is 8.0%.

A multicomponent latent-crimping staple fiber, or a non-mechanically-crimped staple fiber contains a first component and a second component which each have their own differing lengths and a shrinkage differential therebetween and eccentric cross-sectional centers of mass. The staple fibers herein have a tenacity after crimping of at least 90% as compared to the tenacity prior to crimping. Processes for making such a fiber are also described.

A multicomponent latent-crimping staple fiber, or a non-mechanically-crimped staple fiber contains a first component and a second component which each have their own differing lengths and a shrinkage differential therebetween and eccentric cross-sectional centers of mass. The staple fibers herein have a tenacity after crimping of at least 90% as compared to the tenacity prior to crimping. Processes for making such a fiber are also described.

The present invention relates to a nonwoven fabric including a conjugated fiber containing 40% by mass or more and 80% by mass or less of a propylene homopolymer (A) having a melting point (Tm-D) measured by a differential scanning calorimeter (DSC) of higher than 120? C., 4% by mass or more and 40% by mass or less of a polypropylene-based resin (B) having a melting point (Tm-D) measured by a differential scanning calorimeter (DSC) of 120? C. or lower, and 10% by mass or more and 55% by mass or less of a polyethylene-based resin (C), wherein the nonwoven fabric has a texture uniformity of 2.1 or more and 3.0 or less and a bulkiness of 450 ?m or more.

In a woven fabric woven from first constituent yarns as one of warps and wefts and second constituent yarns as the other, a part of the first constituent yarns are side emission type optical fibers; at least a part of the second constituent yarns are light shielding yarns; the woven fabric has a light shielding structure which shields light emission on a design surface side of the side emission type optical fiber; the light shielding structure includes a first group of light shielding yarns and a second group of light shielding yarns each formed of the 2 to 4 continuous light shielding yarns intersecting the side emission type optical fiber on the design surface side; the one light shielding yarn arranged between the first group of light shielding yarns and the second group of light shielding yarns and intersecting the side emission type optical fiber on a non-design surface side.

A method of manufacturing multi-ply separable textured yarn, the method comprising, passing a multi-ply separable interlaced filament yarn through a texturizing unit to form a multi-ply separable draw textured yarn, wherein the multi-ply separable interlaced filament yarn is separable in to at least two separable interlaced filament yarn, wherein the interlacing of the filaments within each separable interlaced filament yarn is retained during further processing of the yarn to fabric and in the fabric.

A method of manufacturing multi-ply separable textured yarn, the method comprising, passing a multi-ply separable interlaced filament yarn through a texturizing unit to form a multi-ply separable draw textured yarn, wherein the multi-ply separable interlaced filament yarn is separable in to at least two separable interlaced filament yarn, wherein the interlacing of the filaments within each separable interlaced filament yarn is retained during further processing of the yarn to fabric and in the fabric.

A high thread/yarn count woven textile fabric (800) is provided. The high thread/yarn count woven textile fabric (800) includes a plurality of warps (810), and a plurality of wefts (820). The high thread/yarn count woven textile fabric (800) having 250 to 3000 picks per inch in the weft (820) which can be extended up to 6000. Further, at least two recycled separable multi-filament parallel yarn picks are woven in groups together in the weft (820). It is provided that the recycled separable multi-filament parallel picks are separable and distinguishable from other picks very clearly. Furthermore, a denier of the recycled separable multi-filament yarn is range from 5 to 50. Usually, the thread/yarn count of woven textile fabric (800) is in between 400 to 3000 which can go up to 6000.