TW202307301A - Air texturized yarns - Google Patents

Abstract

Air texturized yarn with a core fiber and polyamide or polyester fiber, fabrics and garments of the air texturized yarn, and methods for production of the air texturized yarn and fabrics and garments thereof are provided.

Description

air textured yarn

The present invention relates to air textured yarns comprising core fibers and polyamide or polyester fibers, fabrics comprising air textured yarns, and methods for manufacturing air textured yarns and fabrics and garments thereof.

Nylon yarns are used in many knits and knits due to their durability, flexibility and their ability to be worn many times without loss of performance characteristics. However, although nylon is known for being lightweight while exhibiting excellent strength, abrasion resistance, luster, and elasticity, this synthetic polymer does not have a soft hand, making it undesirable for apparel use.

Therefore, work has continued to be done to obtain visually pleasing fabrics with a soft hand and stretch and recovery effects.

The disclosed SUPPLEX® nylon is a class of nylon that looks and feels more like cotton but still has the durability of nylon fibers. To make SUPPLEX®, nylon is extruded through the smallest possible holes, resulting in ultra-thin, lightweight and flexible fibers. Thousands of these microfibers can be intertwined together to form the disclosed SUPPLEX® fabric, which is soft like cotton but does not shrink, wrinkle or fade.

In some applications, nylon yarns have been used to cover elastane by twisting or by air texturing. As a result, some fabrics made from these yarns have good stretch and recovery, but often do not have the desired visual aesthetics. Furthermore, elastane is a rubber fiber which does not absorb dyes well. Furthermore, because elastane is a rubber fiber, it does not provide the desired soft feel or "hand."

Other efforts have led to the manufacture of bicomponent yarns. For example, US Patent Nos. 4,601,949 and 4,740,339 teach polyamide conjugate filament or bicomponent yarns and methods of making them using in-line spinning and drawing methods. Similarly, US Patent No. 3,671,379 discloses bicomponent fibers of poly(ethylene terephthalate) and poly(trimethylene terephthalate) prepared by melt spinning, drawing and annealing.

A benefit of bicomponent yarns as described in these patents is that they create a swelling or curling effect suitable for the construction of stretch garments. For example, these patents teach that by using polymers with different shrinkages in bicomponent yarns, the desired swelling or curling effects can be obtained. This differential shrinkage can be obtained by using different polymers or by using similar polymers with different relative viscosities. However, fabrics composed only of bicomponent yarns generally do not have the desired visual effects, soft hand, and stretch and recovery properties.

US Patent No. 6,548,429 discloses a bicomponent fancy yarn comprising a bicomponent yarn and a second yarn, which can be knitted or woven into a fabric with desired visual impact, hand feeling, stretchability and recovery. Furthermore, since these braids are preferably made of nylon yarn, they are also dyeable and durable. The texture of fabrics made from these yarns was revealed to have a smooth and velvety hand compared to other known fabrics.

There is a need for yarns and fabrics and garments made from such yarns that provide cooling and drying benefits while also providing high stretch and recovery and retaining shape for longer periods of time.

One aspect of the present invention relates to a yarn comprising a core fiber and a polyamide or polyester fiber, produced by air jet texturing, which can be used in fabrics and garments to provide cooling and drying effects while also providing high stretch Resilience and recovery, and keep the shape for a long time.

Another aspect of the present invention relates to a method for manufacturing yarns for fabrics and garments having cooling and drying effects, high stretch and recovery, and long-term shape retention, which The method involves air texturing a core fiber together with a polyamide or polyester fiber.

Another aspect of the invention relates to fabrics and garments with cooling and drying effects, high stretch and recovery, and long-term shape retention, comprising yarns produced by air-jet texturing, comprising core fibers and polyester Amide or polyester fibers.

This patent application claims priority to U.S. Provisional Application Serial No. 63/165,987, filed March 25, 2021, the contents of which are hereby incorporated by reference in their entirety.

The present invention provides air textured yarns and fabrics and garments containing the yarns, which exhibit cooling and drying effects, high stretchability and recovery, and maintain shape for a longer period of time.

The yarns of the present invention comprise a core fiber.

In one non-limiting example, the core fiber is polyester fiber.

In one non-limiting embodiment, the core fiber is a bicomponent fiber.

The terms "bicomponent fiber" and "bicomponent yarn" are used interchangeably herein to refer to the combined product of at least two melt-spinnable fiber components, wherein the combined product has at least two different longitudinally coextensive polymeric chains part. The fiber component is composed of any suitable melt-spinnable fiber-forming polymer known in the art. Suitable fiber-forming polymers for the first and/or second components of the bicomponent include polyamides, polyolefins (such as polyethylene and polypropylene), polyesters, viscopolymers (such as rayon), and vinyl Any homopolymers, copolymers and terpolymers of acid esters. The term "bicomponent" is not intended to be limited to only two components, but is intended to include three or more components that will result in a composition having at least three or more different longitudinally coextensive polymeric segments. combined product. Such bicomponents may be referred to as multicomponent fibers.

Preferred bicomponent fibers are fibers comprising a pair of polymers intimately adhered to each other along the length of the fiber such that the fiber cross-section is, for example, side-by-side, eccentric sheath-core, or other suitable cross-section that produces a suitable crimp. Furthermore, preferably, the fibers have a relatively large volume.

As used herein, the term "shrinkage" refers to the reduction in the longitudinal dimension of each component of a bicomponent fiber upon exposure to moist heat. This differential shrinkage between the components of a bicomponent fiber can be determined by selection of the polymer type, polymer properties such as relative viscosity, crystallizable properties, cross-section, amount of additives present in each polymeric segment, or the like. Combination of properties such as) in one or more aspects of different fiber-forming polymers obtained. These differences in the components of the bicomponent fibers provide differential shrinkage to achieve swelling effects or different longitudinally coextensive polymeric segments. The components of the bicomponent fiber can be arranged as desired, for example in a side-by-side or sheath-core arrangement. For best aesthetics, the sheath core should preferably have an eccentric or asymmetric sheath core type arrangement.

Suitable polyamides for the bicomponent fiber core include, but are not limited to: polyhexamethylene adipamide homopolymer (nylon 66); polycapamide homopolymer (nylon 6); polyheptanamide Homopolymer (Nylon 7); Nylon 10; Polydodecanylamide Homopolymer (Nylon 12); Polybutylene Adipamide Homopolymer (Nylon 46); Polyhexamethylene Sebacamide homopolymer (nylon 610); polyamide homopolymer of n-dodecanedioic acid and hexamethylenediamine (nylon 612); and dodecanediamine and n-dodecanediamine Polyamide homopolymer of acid (Nylon 1212). Copolymers and terpolymers of the monomers used to form the homopolymers described above are also suitable for use in the present invention.

Suitable copolyamides for bicomponent fiber cores include, but are not limited to, copolymers of the monomers used to form the homopolyamides described above. Additionally, other suitable copolyamides include, for example, Nylon 66 in contact with Nylon 6, Nylon 7, Nylon 10, and/or Nylon 12 and intimately mixed. Exemplary polyamides also include copolymers made from dicarboxylic acid components such as terephthalic acid, isophthalic acid, adipic acid, or sebacic acid; amide components such as polyhexamethylene phenylterephthalamide, poly-2-methylpentamethyleneadipamide, poly-2-ethyladipamide butylenediamine or polyhexamethyleneisophthalamide; diamine component , such as hexamethylenediamine and 2-methylpentamethylenediamine; and 1,4-bis(aminomethyl)cyclohexane. Preferably, one component of the bicomponent yarn is a copolyamide of nylon 66 copolymerized with poly-2-methyladipamide (MPMD). This copolyamide can be prepared by polymerizing adipic acid, hexamethylenediamine and MPMD together. Most preferably, one component of the bicomponent yarn is a copolyamide of nylon 66 copolymerized with poly-2-methylpentamethylene adipamide, and the second component is nylon 66.

The above copolyamides can be prepared by methods known in the art. For example, suitable copolyamides can be prepared by mixing fixed proportions of the individual polyamide components in the form of flakes or polymer pellets and extruding in the form of homogeneous filaments. Alternatively, copolyamides can be prepared by mixing the appropriate monomers in an autoclave and performing a polyamidation process as known in the art. Either method is suitable for preparing the copolyamides used in the present invention.

Terpolymers of the monomers used to form the homopolymers described above are also suitable for use in the present invention and can be prepared by methods known in the art.

The fiber-forming polymer of the bicomponent yarn can also be any known polyester, including polyethylene terephthalate (PET), polyethylene naphthalate, polytrimethylene terephthalate, and polyethylene terephthalate Butylene phthalate. Poly(trimethylene terephthalate) is also known as poly(trimethylene terephthalate), and poly(butylene terephthalate) is also known as poly(butylene terephthalate). The polyesters may be homopolymers or copolymers of such polyesters. Polyesters can be prepared by methods known in the art.

Preferred polyesters are described next. The symbol "//" is used to separate the two polymers used to make bicomponent fibers. "2G" means ethylene glycol, "3G" means 1,3-propanediol, "4G" means 1,4-butanediol, and "T" means terephthalic acid. Thus, for example, "2G-T//3G-T" indicates a bicomponent fiber comprising poly(ethylene terephthalate) and poly(trimethylene terephthalate).

The two polyesters used in the polyester bicomponent of the bicomponent fancy yarn of the present invention can have different compositions, such as 2G-T and 3-G-T (preferred) or 2G-T and 4G-T, and are more Best have different intrinsic viscosities. Alternatively, the composition can be the same, eg 2G-T, but the intrinsic viscosity can be different. Other useful polyesters include poly(ethylene 2,6-dinaphthalate), poly(trimethylene 2,6-dinaphthalate), poly(trimethylene bibenzoate), poly(trimethylene terephthalate 1,4-cyclohexanedimethylene), poly(1,3-cyclobutanedimethylene terephthalate) and poly(1,3-cyclobutanedimethylene dibenzoate). Polymerization Advantageously, the compounds differ in both intrinsic viscosity ("IV") and composition, for example 2G-T having an IV of about 0.45-0.80 dl/g and 3G-T having an IV of about 0.85-1.50 dl/g, and Achieve curl shrinkage after high heat styling.

One or both of the polyesters in the polyester bicomponent fibers may be copolyesters. For example, copoly(ethylene terephthalate) can be used, where the comonomer used to make the copolyester is isophthalic acid, glutaric acid, adipic acid, 1,3-propanediol or 1, 4-butanediol. Comonomers may be present in the copolyester in amounts of about 0.5 to 15 mole percent. The use of copolyesters may be especially useful when the two polyesters are otherwise identical, eg 2G-T//2G-T/I. The copolyesters may also contain small amounts of other comonomers, such as sodium 5-sulfoisophthalate in amounts of about 0.2 to 5 mole percent, provided that such comonomers do not adversely contribute to the beneficial effects of the present invention Influence.

The polymers used to form the bicomponent fibers can have any cross-sectional shape. For example, cross-sectional shapes may include circles, ovals, trilobes, shapes with more symmetrical lobes, and dog-bone shapes.

In one non-limiting example, the bicomponent core fiber is a bicomponent filament.

"Bicomponent filament" means a filament comprising poly(ethylene terephthalate) and poly(trimethylene terephthalate) tightly adhered to each other along the length of the filament such that the filament crosswise The cross-section is, for example, side-by-side, eccentric sheath-core, or other suitable cross-section that produces a suitable crimp. Such filaments are inelastic in that, independent of any crimp, they do not have an elongation at break of more than 100%. Instead, it relies on helical coiling for its elasticity, with the filaments forming spontaneously by heat treatment. The side-by-side filaments subjected to the method of the invention may have a "snowman", oval, or substantially circular cross-sectional shape. Eccentric sheath core fibers can have an oval or substantially circular cross-sectional shape. "Substantially circular" means that the ratio of the lengths of two axes that intersect each other at 90° at the center of the fiber cross-section is not greater than about 1.2:1. "Oval" means that the ratio of the lengths of two axes intersecting each other at 90° at the center of the fiber cross-section is greater than about 1.2:1. A "snowman" cross-sectional shape can be described as a juxtaposed cross-section having a major axis, a minor axis substantially perpendicular to the major axis, and at least two maxima in the length of the minor axis when plotted against the major axis.

Each of the components of the bicomponent fiber is present in an amount sufficient to obtain the differential shrinkage required to obtain expansion and can be obtained by known methods. For example, differential shrinkage can be obtained by utilizing different types of polymers, components with different properties such as relative viscosity and crystallizable properties, or using different ratios of components. For example, one component of the bicomponent yarn can be formed from a rapidly crystallizing fiber-forming polyamide while the other component of the bicomponent yarn is formed from a non-rapidly crystallizing fiber-forming polyamide. As taught in U.S. Patent No. 4,740,339, which is incorporated herein by reference, differences in crystallizability can be achieved by selecting polyamides with different terminal velocity distances, which in turn lead to differences in crystallinity as measured by high-load curl test values. Indicates greater expansion.

On the other hand, the components of bicomponent fibers can be selected based on differences in relative viscosities. When one component of the bicomponent fiber is composed of structural repeating units of the same chemical formula as the other component of the bicomponent yarn, polymers having different relative viscosities are selected to produce the desired swelling. The difference in the relative viscosities of the components of the bicomponent yarn should be sufficient to obtain differential shrinkage sufficient to effect expansion. For example, when nylon 66 polyamides of different relative viscosities (RV) are used to form the polymeric segments, the RV difference between the two nylon 66 should be at least 5, preferably at least 15, and optimally At least 30, wherein the RV of the low RV nylon 66 is at least 20, such as at least 50, or at least 65. Preferably, the components of the bicomponent yarn are composed of the same repeating structural units, but have different RVs.

Alternatively, differential shrinkage can be achieved by varying the ratio of the components in the bicomponent yarn or using different types of polymers for the components. Likewise, the amount of each component in the yarn should be an amount sufficient to obtain differential shrinkage sufficient to effect expansion.

As used herein, "swelling" refers to the inherent crimping capability of a bicomponent yarn and can be achieved by having differential shrinkage between the components of the bicomponent yarn. The inherent crimping ability of bicomponent yarns advantageously allows bicomponent yarns to "self-expand" because it does not require the use of mechanical draft twisting or texturing methods in expanding these types of fibers. Some fabrics made entirely of this type of fiber can have stretch and recovery properties and feel similar to fibers from mechanically deformed treatments. When using 2G-T//3G-T bicomponent, it often provides much higher stretchability and recovery than textured fiber.

Methods of making bicomponent fibers are known in the art and those bicomponent fibers used herein can be formed according to any known method. For example, U.S. Patent No. 4,740,339, incorporated herein by reference, describes a method of making bicomponent yarns of different relative viscosities by a spin-draw process to form side-by-side configurations along the length of the filaments . Another known method is described in U.S. Pat. Nos. 4,244,907 and 4,202,854, both of which are incorporated herein by reference, in which a method of making bicomponent yarns consists of extruding a single polymer to form a monocomponent melt The stream can be treated with one-sided cooling before it is fully solidified or with one-sided heat after it is fully solidified, and the filaments are then drawn. Stretching of the bicomponent yarn and subsequent expansion of the bicomponent yarn can be carried out according to known means, such as by heating or steaming. Furthermore, bicomponent yarns can be produced in a continuous manner with the production of the synthetic polymer yarns of the present invention. Alternatively, bicomponent yarns can be produced off-line and subsequently combined with a second yarn.

The yarn of the present invention further comprises a second polyamide or polyester fiber.

Preferably, the second polyamide or polyester fiber is loosely wound around the core fiber.

Suitable homopolyamides for this second fiber include, but are not limited to: polyhexamethylene adipamide homopolymer (nylon 66); polycapamide homopolymer (nylon 6); Heptanamide Homopolymer (Nylon 7); Nylon 10; Polydodecanamide Homopolymer (Nylon 12); Polybutylene Adipamide Homopolymer (Nylon 46); Methylene sebacamide homopolymer (nylon 610); polyamide homopolymer of n-dodecanedioic acid and hexamethylenediamine (nylon 612); Polyamide homopolymer of dioxanedioic acid (Nylon 1212). Copolymers and terpolymers of the monomers used to form the homopolymers described above are also suitable for use in the present invention.

Copolyamides suitable for use in this second fiber include, but are not limited to, copolymers of the monomers used to form the homopolyamides described above. Additionally, other suitable copolyamides include, for example, Nylon 66 in contact with Nylon 6, Nylon 7, Nylon 10, and/or Nylon 12 and intimately mixed. Exemplary polyamides also include copolymers made from dicarboxylic acid components such as terephthalic acid, isophthalic acid, adipic acid, or sebacic acid; amide components such as polyhexamethylene phenylterephthalamide, poly-2-methylpentamethyleneadipamide, poly-2-ethyladipamide butylenediamine or polyhexamethyleneisophthalamide; diamine component , such as hexamethylenediamine and 2-methylpentamethylenediamine; and 1,4-bis(aminomethyl)cyclohexane. Preferably, one component of the bicomponent yarn is a copolyamide of nylon 66 copolymerized with poly-2-methyladipamide (MPMD). This copolyamide can be prepared by polymerizing adipic acid, hexamethylenediamine and MPMD together. Most preferably, one component of the bicomponent yarn is a copolyamide of nylon 66 copolymerized with poly-2-methylpentamethylene adipamide, and the second component is nylon 66.

The above copolyamides can be prepared by methods known in the art. For example, suitable copolyamides can be prepared by mixing fixed proportions of the individual polyamide components in the form of flakes or polymer pellets and extruding in the form of homogeneous filaments. Alternatively, copolyamides can be prepared by mixing the appropriate monomers in an autoclave and performing a polyamidation process as known in the art. Either method is suitable for preparing the copolyamides used in the present invention.

Terpolymers of the monomers used to form the homopolymers described above are also suitable for use in the present invention and can be prepared by methods known in the art.

Polyesters suitable for the second fiber include, but are not limited to, polyethylene terephthalate (PET), polyethylene naphthalate, polytrimethylene terephthalate, and polybutylene terephthalate. Poly(trimethylene terephthalate) is also known as poly(trimethylene terephthalate), and poly(butylene terephthalate) is also known as poly(butylene terephthalate). The polyesters may be homopolymers or copolymers of such polyesters. Polyesters can be prepared by methods known in the art.

In one non-limiting example, the second fiber comprises nylon 6 or nylon 6,6.

In one non-limiting example, yarns of the present invention are produced by air texturing using LYCRA® T400® fiber at the core and polyamide POY 6.6 at the fancy yarn.

As will be understood by those skilled in the art and as demonstrated herein, different yarn compositions of the core fiber and polyamide or polyester fibers yield several final counts (centex).

The polymer used in the core fiber or the second fiber according to the invention may contain, as further constituents, conventional additives which may contribute to improving the properties of the polymer. Examples of such additives include antistatic agents, antioxidants, antibacterial agents, flame retardants, lubricants, dyes, light stabilizers, polymerization catalysts and adjuvants, adhesion promoters, delustrants (such as titanium oxide) , a matting agent, and/or an organic phosphite.

Depending on the intended use, the combined core fiber and the second polyamide or polyester fiber may be present in different ratios in the final product. The fraction of each of the components of the final product can be measured, for example, in terms of its total Deny and Deny per filament. The greater the total denier or denier/filament, the greater the amount of component in the final product. Adjusting the components based on these factors can achieve different functions of the final product. For example, higher stretchability can be achieved by having a greater fraction of polyester or bicomponent fibers in the final product. Conversely, fabrics with lower stretchability can be obtained by having a larger fraction of second polyamide or polyester fibers, especially when the second fibers are monocomponent yarns.

In the present invention, the core fiber is combined with a second polyamide or polyester yarn via air-jet texturing to form a single yarn. Each of the polyester or bicomponent core fiber and the second polyamide or polyester fiber can be produced separately off-line and then combined via air-jet texturing, feeding polyester or polyester in the core via double yarn feed. Bicomponent fibers with simultaneous external feeding of a second polyamide or polyester fiber to form the final synthetic polymer.

It has been found that producing this core fiber and a second polyamide or polyester fiber (preferably loosely wound around the outside of the core fiber) via air-jet texturing produces a synthetic yarn that is visually similar to cotton yarn, has high crimp shrinkage, high elasticity and a high potential elongation of about 20% to about 33% on the yarn. Furthermore, fabrics comprising this air textured yarn unexpectedly exhibit a cooling and drying effect as well as a good hand. It has been found that using the air textured yarns of the present invention, it is possible to prepare fabrics with higher stretch and recovery properties than the original SUPPLEX® fabric made with 100% polyamide textured yarns. In addition, garments made from fabrics comprising air textured yarns retain their shape for longer periods of time.

The "cooling effect" of a fabric means that the feel of the fabric is cool to the touch, which enhances the comfort of garments made from such fabrics.

"Drying effect" of a fabric means the ability to absorb moisture or manage moisture which enhances the comfort of garments made from such fabrics.

The "hand/hand touch" of a fabric refers to the tactile or tactile aesthetics of the fabric. The fabric made from the air textured yarn of the present invention has a soft cotton-like feel. In particular, knitted fabrics have an unexpectedly soft hand when made using the yarns of the invention. For example, circular knitted fabrics made with the yarns of the present invention have an excellent soft hand as well as excellent stretch and recovery properties, which are in contrast to those normally observed when knitted fabrics are made entirely of bicomponent fibers. There is a clear contrast to the "hard" feel.

Furthermore, the air texturing method of the core fiber and polyamide or polyester fibers described herein allows the production of mixtures of greige (gray and beige mixed) with black components, and 100% black forms, via an ecologically sound and sustainable method.

The air textured yarns of the present invention can be woven into fabrics alone, or used as weft or warp yarns with one or more companion yarns well known to those skilled in the art, for use in a variety of fabrics. Such fabrics can be made into a variety of articles including, but in no way limited to, apparel such as tops, bottoms including denim jeans, hosiery, seamless garments, headwear, underwear, gloves, and uniforms.

The following examples demonstrate the invention and its ability to be used to make fabrics and garments. The invention is capable of other and different embodiments, and its several details are capable of modifications in various obvious respects, all without departing from the scope and spirit of the invention. Accordingly, the examples are considered to be illustrative and not restrictive. Examples Example 1 : Exemplary Range of Tested Yarns

As shown in Table 1, test samples 1 to 6 of air textured yarns comprising bicomponent 2G-T//3G-T fibers at the core and polyamide POY 6.6 were prepared and evaluated. Table 1 sample Test 1 core: 50/34 2G-T//3G-T fancy yarn: PA66 55/34 FD Test 2 cores: 75/34 2G-T//3G-T fancy yarn: PA66 100/68 SD Test 3 cores: 150/68 2G-T//3G-T fancy yarn: PA66 100/68 SD Test 4 cores: 75/34 black 2G-T//3G-T fancy yarn: PA66 96/46 black Test 5 cores: 150/68×2 2G-T//3G-T fancy yarn: PA66 100/68 SD Test 6 cores: 300/68 2G-T//3G-T fancy yarn: PA66 100/68 SD Count (Ne) 47 30 20 31 13 13 Count (cent taxi) 125 199 285 192 456 448 cross section round + dogbone round + dogbone round + dogbone round + dogbone round + dogbone round + dogbone PA content (%) 52 54 37 54 twenty three twenty three EME content (%) 48 46 63 46 77 77 Yarn elongation (%) twenty four 25 33 25 33 31

In contrast, see Table 2 showing a comparative analysis of 100% polyamide yarns with significantly lower elongation. table 2 analyze PA66 + PA66 Core PA66 81/23/1 Fancy yarn PA66 100/68 SD Core PA66 81/23/2 Fancy yarn PA66 100/68 SD Yarn elongation (%) 13.4 17.6 Count (cent taxi) 187.6 274.8 Filament N° 91 114 cross section round round composition(%) 100% PA66 100% PA66 Example 2 : Test sample of fabric

Test 1: Denim fabric for jeans (bottoms)

Fabric Construction: Denim - twill 3×1 Warp: Cotton 16/1 Ne-6300 Warp

Weft: Air textured yarn 465/204 cents (23% PA66 + 77% 2G-T//3G-T - 17 picks/cm)

Fabric width at loom: 208 cm Fabric width after BO: 151 cm Commercially available fabric width: 150 cm

Fabric elongation after washing: 24%

The results of the analysis of this fabric are shown in Table 3. Table 3 analyze Standard for braided fabrics The result is 465/204 taxi cents (23% PA66 + 77% 2G-T//3G-T) 2G-T//3G-T fiber content All weft yarns are air-deformed 2G-T//3G-T fibers 2 Warps 2G-T//3G-T 150/68 + 1 Warp Polyamide 100/68 Denier Fabric elongation Minimum 20% 22.8 fabric growth 3% max 1.0 Fabric Shrinkage - Length 7% max (cumulative shrinkage after 3 washes) -2.8 Fabric Shrinkage - Width 7% max (cumulative shrinkage after 3 washes) -3.3 absorbent 30 seconds 6 s planar wicking 2 in ² (12.9 cm ² ) 8.7 Halo No halo defects emerge-failure vertical wicking none -

Test 2: Denim fabric for tops (light)

Fabric Construction: Denim - Twill 2×1 Warp: Cotton 20/1 Ne-5664 Warp

Weft: Air Textured Yarn 285/136 centaxi (37% PA66 + 63 2G-T//3G-T) - 18 Weft/cm Fabric Width at Loom: 170 cm

Fabric width after BO: 140 cm

Commercially available fabric width: 136 cm Fabric elongation after washing: 24%

The results of the analysis of this fabric are shown in Table 4. Table 4 analyze Standard for braided fabrics The result is 285/136 taxi cents (37% PA66 +63% 2G-T//3G-T) 2G-T//3G-T fiber content All weft yarns are air-deformed 2G-T//3G-T fibers 1 Warp 2G-T//3G-T 150/68 + 1 Warp Polyamide 6.6 100/68 Denier Fabric elongation Minimum 20% 20.0 fabric growth 3% max 0.8 Fabric Shrinkage - Length 7% max (cumulative shrinkage after 3 washes) -4.7 Fabric Shrinkage - Width 7% max (cumulative shrinkage after 3 washes) -3.8 absorbent 30 seconds 5 seconds planar wicking 2 in ² (12.9 cm ² ) 13.5 - Failed Halo No halo defects emerge-failure vertical wicking none -

Claims (19)

A yarn comprising a polyester or bicomponent core fiber and a second polyamide or polyester fiber produced by air jet texturing. The yarn of claim 1, wherein the bicomponent core fiber comprises polyamide, polyolefin, polyester or viscose polymer. The yarn of claim 1, wherein the bicomponent core fiber comprises poly(ethylene terephthalate) and poly(trimethylene terephthalate). The yarn of claim 1, wherein the bicomponent core fiber is a bicomponent filament. The yarn of claim 1, wherein the second polyamide or polyester fiber is loosely wound around the bicomponent core fiber. Such as the yarn of claim 1, wherein the second polyamide or polyester fiber is a polyamide selected from the group consisting of: polyhexamethylene adipamide homopolymer (nylon 66); Amide Homopolymer (Nylon 6); Polyheptanamide Homopolymer (Nylon 7); Nylon 10; Polydodecanylamide Homopolymer (Nylon 12); Amine Homopolymer (Nylon 46); Polyhexamethylene Sebacamide Homopolymer (Nylon 610); Polyamide Homopolymer of n-Dodecanedioic Acid and Hexamethylenediamine (Nylon 612) and polyamide homopolymers of dodecanediamine and n-dodecanedioic acid (Nylon 1212). The yarn of claim 1, wherein the second polyamide or polyester fiber is a polyester selected from the group consisting of: polyethylene terephthalate (PET), polyethylene naphthalate, polyethylene Trimethylene terephthalate and polybutylene terephthalate. The yarn according to claim 1, wherein the second polyamide or polyester fiber comprises nylon 6 or nylon 6,6. A yarn according to any one of claims 1 to 8, which provides a cool and dry effect and a soft hand when incorporated into fabrics and garments, while also providing high stretchability compared to 100% polyamide yarns And recovery, and keep the shape for a long time. A fabric comprising the yarn according to any one of claims 1 to 9. A garment comprising the fabric according to claim 10. A method for the manufacture of yarns for use in fabrics and garments which have a cooling and drying effect, soft hand, high stretch and recovery compared to fabrics made of 100% polyamide yarns and/or retain shape for a longer period of time, the method comprising air texturing a polyester or bicomponent core fiber together with a second polyamide or polyester fiber. The method of claim 12, wherein the bicomponent core fiber comprises polyamide, polyolefin, polyester or viscose polymer. The method of claim 12, wherein the bicomponent core fiber comprises poly(ethylene terephthalate) and poly(trimethylene terephthalate). The method of claim 12, wherein the bicomponent core fiber is a bicomponent filament. The method of claim 12, wherein the second polyamide or polyester fiber is loosely wound around the bicomponent core fiber. The method of claim 12, wherein the second polyamide or polyester fiber is a polyamide selected from the group consisting of: polyhexamethylene adipamide homopolymer (nylon 66); Amide Homopolymer (Nylon 6); Polyheptanamide Homopolymer (Nylon 7); Nylon 10; Polydodecanylamide Homopolymer (Nylon 12); Amine Homopolymer (Nylon 46); Polyhexamethylene Sebacamide Homopolymer (Nylon 610); Polyamide Homopolymer of n-Dodecanedioic Acid and Hexamethylenediamine (Nylon 612) and polyamide homopolymers of dodecanediamine and n-dodecanedioic acid (Nylon 1212). The method of claim 12, wherein the second polyamide or polyester fiber is a polyester selected from the group consisting of: polyethylene terephthalate (PET), polyethylene naphthalate, polyethylene Trimethylene terephthalate and polybutylene terephthalate. The method according to claim 12, wherein the second polyamide or polyester fiber comprises nylon 6 or nylon 6,6.