TW201012991A - Fine denier partially oriented bicomponent fibers and flat and textured yarns for use in apparel - Google Patents

Abstract

Methods that include a method directed to producing dyeable bicomponent, low denier per filament, partially oriented bicomponent fibers having a density of about 1.15 g/cm<SP>3</SP> or less for use in producing flat and textured yarns for use in a wide variety of textile applications, including apparel. Among the methods provided is a method comprising: (a) selecting a polyester resin for a core of the bicomponent fiber; (b) selecting a polyolefin resin for a sheath of the bicomponent fiber, wherein a viscosity ratio between the polyester resin and the polyolefin resin is in the range of about 0.4 to about 4; and (c) forming a dyeable sheath-core bicomponent fiber having a polyester core and a polyolefin sheath having a solid state density of about 1.15 g/cm<SP>3</SP> or less.

Description

201012991 VI. Description of the invention: [Technology 々 域 】 】 】 】 】 】 】 】 】 】 】 】 】 】 】 】 】 参考 参考 参考 参考 参考 参考 参考 美国 美国 美国 美国 美国 美国 美国 美国 美国 美国 美国 美国 美国 美国 美国 美国 美国 美国 美国 美国It is hereby incorporated by reference. FIELD OF THE INVENTION The present invention is a partially-oriented bicomponent fiber having a dyeable two-component density of about U5^/cm 3 or less and a low denier per filament for use in the manufacture of flat yarns and textured yarns for use in a wide variety of products. Applications include manufacturing methods for apparel.

C Prior Art: J BACKGROUND OF THE INVENTION Fibers that are inherently water repellent have desirable properties that can be used in a variety of textile articles such as garments. A condensed fiber (e.g., a polypropylene fiber) is an example of a water repellent fiber that can be used to manufacture a material having desired moisture transport properties and related properties. The polybenz hydrocarbon fibers are fibers from which the fiber forming material is any long chain synthetic polymer consisting of at least 85% by weight of ethylene, secret or other hydrocarbon-derived units. The polystyrene fiber can be a multifilament or a single staple fiber, a fiber bundle or a thin lin. In several embodiments, the fibers are colorless and circular in cross section. Wear the face can be modified for different end uses. In some cases, its physical properties are pure and colorless. These fibers have traditionally been used primarily for ropes, ropes and utensil fabrics. Polypropylene is generally a favorable 201012991 olefin for use in textile applications due to its melting point of 13⁄4. While polyolefin fibers, such as polypropylene fibers, are water repellent in nature and have certain desirable properties, polyolefin fibers may have certain challenges for use in textile articles. For example, polypropylene fibers generally do not contain dyed sites, so the dyeability of polypropylene fibers is extremely poor. For the same reason, the dyeability of yarns or textile articles made of polypropylene fibers is also extremely poor. It is believed that this dyeability defect limits the use of polyolefins for apparel purposes. In at least some cases, in order to improve the dyeability of polypropylene fibers, two different methods are used: (1) chemical modification of the polypropylene polymer, or (2) polypropylene and chemically dyeable materials (eg Blend with polymers, additives or natural filler fibers. The chemical modification method includes, for example, copolymerization of a relatively polar compound and grafting to a polypropylene polymer. However, this method is disadvantageous in some cases, because allowing the modified polypropylene to receive conventional dyeing often requires a significant modification concentration, resulting in a change in the chemical and physical properties of the polymer, so that its characteristic properties are lost or large. For damage. In addition, polypropylene and polypropylene blends which have been chemically modified by spinning have often proven to be difficult, especially for fine denier fibers. Another potential solution to the problem of polyolefin dyeability is the two-component fiber spinning technology. Using these techniques, the dyeability of the polyolefin is enhanced while maintaining its desired unique properties (e.g., hand, water repellency, and low density). Although the two-component spinning technology clearly provides the “best of the best” approach, the manufacture of polyolefin-polyester bicomponent filaments suitable for flat yarns, textured yarns, or other garment yarns has many The challenge, one of the challenges of 201012991, was to identify process conditions that utilized the synergistic benefits of two different polymer systems for polyolefin-polyester bicomponent fibers. For example, the identification and implementation of process conditions that identify and implement actual physical limitations on existing textile manufacturing and consumer product performance attributes are extremely difficult. For the continuous filament yarn method, since it is converted into a fabric by, for example, knitting or weaving, it is necessary to make the fine fiber tow (lower than each filament 3 denier or less) uniform enough to not show visual defects, and thus further Restricted. The human eye can detect defects caused by filament size, yarn bulk and/or small changes in dyeing or color change. Further design and control of yarn properties allows for a wide variety of textile processing and transformation equipment difficulties. The deformation (also referred to as deformation in the industry) is a method commonly used for clothing yarns for synthetic fibers, which provides bulkiness to the fibers, so that the clothes have a sense of beauty and a desired aesthetic. The deformation is a method of improving the coverage efficiency and feel of the flat yarn by mechanically increasing the bulkiness, the medium spread, and the deformation to the flat yarn. The textured yarn is typically a continuous filament yarn that is processed to introduce durable curls, loops, loops or other fine distortions along the length of the filament. Synthetic fibers in the form of continuous filaments, when co-twisted to produce continuous filament yarns having a smooth surface, cannot compete effectively with spinning, especially for natural fibers, because the former does not have the properties of spinning. The same furry feel, bulkiness, and warmth of treatment or high moisture absorption. Deformation is a valuable method because rayon manufacturers can now manufacture yarns that are woven or knitted at night or less without the need to cut extruded filaments and re-spin the resulting staples on conventional textile machines. The handler. A number of techniques have been developed to obtain such filament modifications, some of which are more commonly used than other 201012991 methods. . The tensile deformation is a combination of the stretching stage and the deformation treatment in the manufacture of artificial yarns in a single-machine method. The stretching and deformation stages can be performed in separate, generally continuous sections of the machine ("sequential tensile deformation") or in the same section ("simultaneous tensile deformation"). The yarn which has been subjected to the tensile deformation treatment is referred to as a stretched textured yarn ("dty"). Partially oriented yarns, or "POY", are continuous filament yarns, which are made by extrusion of synthetic polymers, so that the resulting filaments have a substantial degree of molecular orientation, but further molecular orientation is possible, that is, incompletely drawn Stretched filament yarn. The POY to be stretched and deformed often has several properties. First, the total yarn strength of the crucible must be high enough to not interrupt the stretching deformation process when it is fed a set of deformed discs rotating at a speed of about 1.2 times to about 2.0 times the speed of the dty yarn. For reliable deformation, a typical POY must have a toughness of at least about 1 gram per denier, with further improvement in workability as the toughness reaches at least about 12 grams per dandy or even about 1.6 or even about 2.0 or more. In addition, it is not necessary to have a break point elongation of at least about 6% in the manufacture of the dty, and the workability is further improved as the POY approaches a near 70%. The working ability is further improved when the elongation at break point is from about 80% to about i25% or more. Finally, the POY must be capable of forming curls or deformations that provide an appropriate balance between heat resistance and recovery strength to facilitate subsequent pull-out during subsequent fabric manufacture because the dty with unstable curl will eventually lose its Deformation. Partially oriented polyolefins for flat yarns, textured yarns and other clothing yarns _ Polyester double-injured fibers are a complex problem that has not been successfully solved in the industry 201012991. It is a further challenge when the filament density is maintained at about 1.15 grams per cubic centimeter or less and when the final elongation after spinning needs to be greater than about 60%. SUMMARY OF THE INVENTION The present invention relates to the manufacture of partially dyed bicomponent fibers having a density of about 1.15 g/cc or less and a low-denier per frond fiber for the production of flat and textured yarns. A method for a wide variety of textile applications including apparel. In one embodiment, the present invention provides a method comprising: (a) selecting a polyester resin for the core of the bicomponent fiber; (b) selecting a polyolefin resin for the skin of the bicomponent fiber, wherein The viscosity ratio between the polyester resin and the polyolefin resin is in the range of from about 0.4 to about 4; and (c) forming a dyeable polyester core and polyolefin skin having a density of about 1.15 g/cc or less. Leather core type bicomponent fiber. In one embodiment, the present invention provides a method comprising: (a) forming a dyeable sheath-core bicomponent fiber having a density of about 1.15 g/cc by a method, the method comprising: (1) selected for the pair a polyester resin of a core of a component fiber; (ii) a polyolefin resin selected for the skin of the bicomponent fiber, wherein a viscosity ratio between the polyester resin and the polyolefin resin is in a range of from about 0.4 to about 4; And (iii) forming a dyeable sheath-core bicomponent fiber having a polyester core and a polyolefin sheath having a density of about 1.15 g/cc or less; and (b) deforming the dyeable sheath core bicomponent fiber A deformed dyeable sheath core bicomponent fiber is formed. 201012991 The features and advantages of the present invention will be apparent to those skilled in the art. Although many skilled practitioners have made a number of changes, these changes fall within the essence of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS The drawings illustrate certain aspects of several embodiments of the present invention and are not intended to limit or define the invention. Figures 1A and 1B are schematic illustrations of two POY processes that can be used for melt-spun core-core bicomponent fibers. The example of Fig. 1A shows an example of the s-wrapping method, and the example of Fig. 1B shows an example of the rotational stretching POY method. Figure 2 is a schematic view of a typical tensile texturing machine. [Embodiment 3] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to the manufacture of a partially dyeable bicomponent fiber having a density of about 1.15 g/cc or less and a low-denier per frond fiber for flattening. Yarns and textured yarns are used in a wide variety of textile applications including garments. One of the objects of the present invention is to devise a method of manufacturing a dyeable two-component POY suitable for use in flat yarns and textured yarns. In several embodiments, the method of the invention can be used to obtain low density bicomponent fibers that can be rotationally stretched and dyed using a disperse dye. One of the many advantages of a fabric comprising the bicomponent fiber of the present invention is that the fabric can be dyed even if the fabric and/or fiber comprises a polyolefin. The dyed fabric has similar color development and color fastness to polyester fibers dyed with disperse dyes. When the fiber is processed under certain conditions, 201012991 can achieve other possible advantages, including unexpectedly unexpected hand, color depth and color fastness. In certain embodiments, specific process conditions define the best

The property is to obtain a low-density fiber which can be stretched and dyed by using a disperse dye. In still other embodiments, the method of the invention can be used to make dyeable two-component polyolefin-polyester core-sheath fibers which can then be stretch-deformed to have a fine denier of 3 denier per filament or less Dty, and maintains a density of ρ 〇 γ fibers of about 克 / g / cm or less, for example about 1.08 g / cm 3 . In several embodiments, the fiber density is about (five) grams per cubic centimeter or; for example: from 1 to 0 grams per cubic centimeter to about 0.95 grams per cubic centimeter to about 0.17 grams per cubic centimeter. Words are specifically defined unless otherwise defined herein, otherwise all terms have their usual definitions. As used herein, the term "bi-component fiber" refers to two or more groups of poly-components that are more sub-divided into four (four) domains. Two-component: Dimensional is also referred to as a two-component fiber or a multi-component fiber. The double in "^成伤" does not imply that only two components are used. The double-dimensional structure may be, for example, a sheath-core type arrangement in which a polymer is surrounded by another polymer, a pattern arrangement, an island arrangement in a sea type, a crescent arrangement, and the like. These different arrangements have different cross sections as is known in the art. These different arrangements can have a variety of different profiles.

As used herein, the term "compatibilizer" means a component that promotes the incorporation and/or adhesion of a compound in a fiber. A "dPf" as used here - the word means Denny per filament. 201012991 As used herein, the term "stretch ratio" is defined as the winder speed / first 'guide roller speed. The term "dty" refers to a yarn that has been subjected to tensile deformation treatment. As used herein, the term "elastomeric fiber" means to have a stretched length of at least about 50%, more preferably at least about 60% after initial stretching and after a fourth stretch to 100% strain (double length). And better about 70%. One suitable way to perform this test is based on the Rayon International Bureau of Standards, BISFA 1998 'Chapter 7' Option A. Under this test, the fiber rose was placed between two clamps set at intervals of 4 。. Then pull the clamp to a distance of 8 〇 at a rate of about 20 mph and allow it to respond immediately. As used herein, "fabric" means a manufactured assembly of fibers and/or yarns having a substantial area relative to its thickness and sufficient mechanical strength to achieve a cohesive strength characteristic of the assembly. The fabric can be a knit, a woven or a non-woven fabric. The fabric can be used, for example, to make garments. As used herein, the term "fiber" refers to a material in which the length to diameter ratio is greater than about 10. Fibers are typically classified according to their Danny, which is a unit of linear density measurement, defined as weight per gram of 9,000 meters. Filament fibers are generally defined as having a fiber denier of greater than about 10 (11 dtex), typically greater than about 30 (33 dtex). Fine denier fibers are fibers having a denier of less than about 15 per fiber. Micro-dani fibers are generally considered to have a multifilament fiber having a Dani number per filament ("dpf") of less than about 1. "Filament fiber" or "monofilament fiber" means a single continuous material strand having an infinite (in other words, not predetermined) length, as opposed to "short fiber", which is a finite length of discontinuous material strand (ie, strand) Has been cut or otherwise divided into segments with a pre-10 201012991 length). Fibers can be referred to as individual fibers or as a collection of individual fibers. The term "flat yarn" as used herein refers to a fully drawn continuous filament yarn that is substantially untwisted and undeformed. In several embodiments, the flat yarn can achieve special properties such as increased flatness of the garment after the untwisted yarn has been prepared. The term "partially oriented yarn" or "POY" as used herein refers to a continuous filament yarn having a substantial degree of molecular orientation by extrusion of a synthetic polymer such that the resulting filaments are further produced by molecular orientation, that is, no Fully stretched filament yarn. As used herein, the term "polymer" refers to a polymeric compound made by polymerizing monomers of the same type or different types. The term "polymer" is used to refer to homopolymers, copolymers, terpolymers, dendrimers, heteropolymers, and oligomers. The term "polyolefin" as used herein refers to a family of polymers made from dilute hydrocarbon monomers. The olefinic single system is made from an olefin. Examples of the polyolefin are polypropylene, polyethylene, or polyolefin. The terms "polyolefin" and "polycarbonate" are used herein to refer to all polyolefin classes and substrates made from olefins, including fabrics and clothing. As used herein, the term "cold shock" refers to rapid cooling during fiber formation. The term "spinning" is used herein to refer to a collection of various processing procedures required to make yarn from fibers or filaments. As used herein, the term "spinning" is used as a method in which a continuous filament fiber is produced in a plastic production line, and then subjected to a stretching process in a process in which a roller is used to apply mechanical stretching to make a toughness. And the elongation is controlled to the desired level. Variations of the method also use one or more heated rolls to apply heat while the fibers are mechanically stretched to assist in stabilizing the yarn from shrinkage. "S-Cover" is a method of making continuous filament fibers in an extrusion line where one or more rolls are used to control the initial take-up speed before the winding of the wrapped yarn, occasionally referred to as the yarn. The roll is taken up so that the yarn is not mechanically stretched after being taken up. The term "twisting" as used herein refers to the helical configuration of the fibers or filaments in the yarn. Coronation is occasionally referred to as the number of turns per unit length that is centered on its axis as observed in yarn or other textile strands. Usually expressed as Τ·Ρ·Ι·(per number of turns) or Τ.Ρ.Μ. (number of turns per foot). It is also measured by the helix angle in a structure of known diameter. The term "viscosity ratio" means the viscosity ratio of at least two resins under the specified spinning conditions. Spinning conditions include line speed and dpf. As used herein, the term "yarn" includes monofilament fibers that form a continuous strand by twisting or otherwise joining, as well as a plurality of fibers (e.g., filament fibers, monofilament fibers, staple fibers, etc.). The core spun yarn is a yarn that has been twisted around the core by the fiber, the core being another filament or previously spun yarn, and the twisting at least partially conceals the core. The term "textured yarn" refers to a yarn which is often subjected to deformation treatment and which has a similar fiber count or filament count and linear density, and has been given a relatively large volume of filament or spinning. The textured yarn can be a continuous filament yarn that has been subjected to processing 12 201012991 and is introduced into the durable crimp, coil, loop or other small twist along the length of the filament. The terms "deformation", "deformation" or "deformation" refer to the treatment of additional bulk, medium elongation and deformation of synthetic thermoplastic yarns. The deformation treatment provides a predominantly short yarn related property to the stronger continuous filaments. These improved properties have been developed by permanently introducing crimps, coils, loops and crimps into straight filaments. A variety of techniques have been developed to achieve improvements in these filaments, some of which are more commonly used than others. The stretching and twisting method belongs to one of the methods. In this method, the yarn is oriented by stretching, and then twisted in a plurality of integrated sequential stages to increase the yarn deformation. The term "textile article" as used herein refers to fabrics and articles made from fabrics, for example, including clothing and other items. The volume percentage of each component in the fiber can be calculated from the weight percentage of the constituent components according to the following equation (1), where v*% is the volume % of the polymer in the skin, and W*% is the weight % of the polymer in the skin. Ws% is the weight % of the polymer in the core, db* is the solid density of the polymer in the sheath, and db« is the solid density of the polymer in the core. (1) Factory skin % = Two-component fiber solid density (dbBIC0) is calculated from the weight percentage of the constituent components according to equation (2). The definitions in equation (2) are as defined in equation (1). 1 W.% K,%,

Jb v ib ib ^ aBICO ^皮 *^芯 13 (2) 201012991 The term "viscosity" refers to the measurement of the resistance of a fluid to shear stress or prolonged stress deformation. Different measurements can be obtained by measuring the viscosity. The measurement methods for which the viscosity time scale is not applicable are listed here. All numbers disclosed herein are approximate and have nothing to do with the use of the terms "about" or "approximate". These values can be changed. Any numerical value falling within the range and any range encompassed are specifically disclosed when the numerical range of the lower limit RL and the upper limit ru are disclosed. In addition, the indefinite article "a" or "an" is used to mean one or more than one. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVENTION Example of Bicomponent Fibers At least in the dry embodiment, the partially oriented bicomponent fibers of the present invention are sheath-core bicomponent fibers comprising a polyolefin sheath and a polyester core. Examples of suitable polyolefins include polymers having ethylene, propylene, or other olefin units. Additional examples of suitable polyolefins include polyolefins having a high melting point (greater than about 135 C) including, but not limited to, polypropylene homopolymers, polypropylene co-I, Ziegler-Natta catalyzed polypropylene. Polypropylene homopolymers or other high melting point (greater than about 丨). Polystyrene. Blends of such polyolefins are also suitable. Blends of high melting point polyolefins with other polyolefins having a melting point of less than about 135 C2 are also suitable. Examples of low melting point polyene smoke include but not Limited to polyethylene, 6 dilute copolymer (polar or non-polar) or propylene-based copolymer. These high melting point polyene smoke and amorphous polymer such as random material, hydrogenated polystyrene, blended into 14 201012991 The composition is also suitable. The amount of polyolefin included in the bicomponent fiber of the present invention varies depending on a number of factors including the desired application and properties. In several embodiments, the polyolefin portion of the bicomponent fiber of the present month Composing the considerable size of the bicomponent fiber In some embodiments, the polyolefin may comprise from about 40% to about 90% by weight of the bicomponent fiber (eg, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%). , 85%, etc.) and additionally in an amount of from about 50% to about 80% by weight of the bicomponent fiber are present in the bicomponent fiber. It should be noted that a difference in dyeing of more than about 70% of the polyolefin content is observed. The core comprises a polyester. In several embodiments, the polyester comprises an ester linkage and has a melting point of less than about 265. (Examples of suitable polyesters include, but are not limited to, polyethylene terephthalate, poly Butyl terephthalate ("PBT"), polytrimethylene terephthalate, polytetramethyl terephthalate, polylactic acid, amorphous polyester, polyester copolymer And its composition. For the purpose of the present invention, the amorphous polyester has a melting point which is difficult to measure using the prior art, and has a high K1 测 measured by differential scanning calorimetry (the glass transition temperature of rc is regarded as having a melting point below 265 ° C. The core component of the bicomponent fiber also comprises a blend of polyester and the aforementioned polyolefin. The amount of polyester of the bicomponent fiber varies depending on a number of factors including the desired application and properties. In some embodiments, the polyester may comprise from about 10% to about 60% by weight of the bicomponent fiber (eg, 10%, 15%, 20) %, 25%, 30%, 35%, 40%, 45%, 50%, 55❶/〇, etc.) and additionally 'about 20% to about 50% by weight of the bicomponent fiber are present in the bicomponent fiber. 15 201012991 The ratio of the second polymer to the first polymer in the fiber is based on a number of factors, in a number of factors, in several embodiments, the weight ratio is from about 1:1 〇 to about 95:5. Scope; in addition to the range of about 6〇4〇 to about 9〇1〇; and another range of about 40:60 to 2〇. In several embodiments, a weight ratio of from about 65:35 to the range of the galaxy can be used for the sheath-core arrangement. In several embodiments, a weight ratio ranging from about 40:60 to about 8 Torr:2 Torr can be used in the sheath-core arrangement wherein the third polymer component is blended and blended. ^Han Xiu

The sheath-core bicomponent fibers have various cross-sections, and are known in the art to be circular, printed, rectangular, star-shaped, and other shapes. The relative position of the core to the skin may be symmetrical or asymmetrical, but symmetry is preferred. In some embodiments of the bicomponent fibers used in the present invention, the polyacetate has a lacquer of less than about 2, and the polyolefin constitutes a substantial amount of sheath of the sheath-core bicomponent fiber.

In addition to the polybasic hydrocarbons and the polyacetate, in several embodiments, the bicomponent fibers can comprise additional polymeric components. For example, additional components can be blended with the hydrocarbon or polyester. Further, for example, the additional component may constitute a separate zone from the fibers of the hydrocarbon and the polyester. By way of example, the bicomponent fiber comprises: a polyolefin comprising at least a portion of an outer surface of the fiber; a layer comprising a polymer comprising an ester linkage and having a melting point of less than about 265t; and a core comprising a polyolefin . The polyolefin of the inner core may, for example, be a polyolefin which has been described above as being suitable as the outer surface of a polysulfide. Examples of suitable polymer components which may be blended with the first polymer or the second polymer or as separate components of the first polymer and the second polymer include, but are not limited to, having a weight fraction of 3% to 2 with acetamidine. 〇% 16 201012991 a copolymer of propylene and ethylene; or a copolymer having ethylene and one or more CX-olefins having a total α-olefin content of more than 5% by weight; or propylene or ethylene and a polar comonomer, for example A copolymer of acrylic acid and its metal salt or ethyl acetate, methyl methacrylate or the like. If desired for a particular application, an additive may be included in the bicomponent fiber, provided that any such additive does not undesirably affect the purpose of the present invention. For example, an additive resistant to oxidation and ultraviolet light exposure, an additive for Φ for static dissipation, an additive for odor control, an additive for fiber coloring, a spinning finish, and other auxiliaries may be used. In several embodiments, the fibers may also contain dispersed particles for purposes including, but not limited to, dyeability improvement. Such particles may, for example, be polymers, clays, metal hydroxides, etc.: - In several embodiments, compatibilizers may also be used, for example, to promote intimate blending and/or shafting of the bismuth component fiberglass polymer. . Examples of suitable compatibilizers include, but are not limited to, homogeneous branched ethylene polymers, such as those grafted with a diamine or an amine-containing compound containing a compound such as cis-butanthene; &gt; polymer. The compatibilizer should generally assist in the incorporation of the core component into the interior of the skin component. Those skilled in the art will benefit from this disclosure and may choose the appropriate type and quantity of compatible #1 for a particular application. For example, depending on the desired application, the fibers can be of any suitable cross-sectional shape. For a variety of applications, it is preferred to have a relatively rounded surface due to low friction. However, other shapes such as a trilobal shape or a flat shape (e.g., "ribbon") may be employed. The multifilament fibers may comprise cis, 36 or a multiple thereof in the range of 0 to 3 dPf, and the individual fibers are in the range of dpf to 2 dpf. As the dpf of 17 201012991 is reduced, more filaments can be used in the yarn to make the yarn more tolerant of downstream processing conditions. In several embodiments, suitable fibers have a dpf of at least about 0.5 dpf to about 50 dpf. In some embodiments, the bicomponent fibers can be fine denier fibers having less than about 15 dpf. By way of example, the bicomponent fibers have a dpf of from about 0.5 to about 15 (eg, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, etc.), and additionally about 0.7. Dpf to about 3 dpf. In several embodiments, the bicomponent fibers can be spun into a total denier yarn having from about 20 to about 1,500 and additionally from about 30 to about 300. The density of the bicomponent fibers can be determined from the volume ratio of the components and the nominal density. In several embodiments, the bicomponent fibers have a POY fiber density of about 1.14 grams per cubic centimeter, such as from about 1.08 grams per cubic centimeter to about 1.07 grams per cubic centimeter. In some cases, the fiber density can be about 1.02 grams per cubic centimeter or less, such as from about 0.9 grams per cubic centimeter to about 0.95 grams per cubic centimeter to about 1 kilogram per cubic centimeter. In several embodiments, monofilament or multifilament fibers comprising bicomponent fibers in accordance with embodiments of the present invention can be used in textured yarns, stretch textured yarns, ring spun yarns, rotationally drawn yarns, or partially oriented yarns. EXAMPLES OF THE PROCESS OF THE INVENTION As described above, the present invention provides a dyeable two-component low-density partial D-component of each of the filaments having a density of about 1.15 g/cm 3 or less which can be used for the manufacture of flat yarns and textured yarns for clothing. The method of manufacturing fibers. Several methods of the invention involve the following steps. Some of the steps are optional and can be used selectively if desired. Resin selection: The first step of the method is to properly select the polyolefin resin and polyester resin used to form the double 201012991 component fiber. When selecting a resin, consider the thermal and rheological characteristics associated with the composition. One of the factors considered for example is the difference between the two melting points of the resin used. Obtaining the correct balance of the resin will help to avoid the problems discussed in the second step for different melting points. In a preferred embodiment, a resin such as a polyester resin can be dried to remove moisture from the resin. Moreover, in the preferred embodiment, the resin is treated in a conditioned environment having a controlled moisture content. The important parameter is the choice of melting point. This can be achieved by considering the melting point of the resin used, the transfer line configuration, and the temperature limit of the spun. As for the temperature limit, the challenge is to balance the melting points of different resins. The lower melting point resin is the system in heating; the higher melting point resin is the system in cooling. The challenge is that it is not expected to be too fast to cool the higher melting point. This can be a problem. For example, if the polyester resin comes to about 30 (TC, hitting 285 in the spinning nozzle. (: cold spot, it will become too viscous when cooled. It will become difficult to form filaments from the spinning nozzle, resulting in defects (such as fiber foaming). In addition, if the temperature of the polyolefin portion is overheated, the fiber will decompose, and at least in some cases, the fiber may form a black coke/caus. Therefore, the design parameters must be carefully balanced in view of the resin selected. The important aspect is the selection of the polymer in the core and the skin and the choice of processing conditions such that the ratio of core viscosity to skin viscosity under spinning conditions is from about 0.4 to about 4. Since the viscosity is based on the material, capillary size, capillary shape, And the relative melt temperature of the polymer as it enters and exits the capillary, the choice of polymer is beneficial. By choosing the right combination of temperature and spout capillary design, in some embodiments, it can be made with polyolefin skin and polyester. Core and 19 201012991 Bicomponent fibers that meet the subsequent tensile and twisting requirements. For best performance, at least in several embodiments, it is believed that the thin hydrocarbon C/2 Q 5 to have a level 6Q, preferably coffee, and, best of 2 to 35. _ For best results, the desired molecular weight distribution of the polyolefin-based 4 below.

In at least some embodiments, the spinning method of the present invention and the optimum range conditions and deformations of the sizing equipment and the sizing material of the flat yarn are difficult if the desired tensile deformation method (tetra) rheology material is difficult. The optimization of the fiber spinning and deformation process of the yarn. The spinning and selective stretching (four) method of the present invention achieves thermal stability and/or mechanical stability and improved curl stability for at least a few embodiments. , fiber spinning (also known as fiber formation): the second step of the method is fiber

Expected. There are two suitable methods for the fiber to be converted into steps. Including s-cladding and rotary stretching. The s_cladding method provides s-direction inspection of the fibers. The rotary drawing method only stretches the fiber; since the fiber is not checked, no deformation is introduced. The S·cladding method is a method for manufacturing a filament yarn for extrusion molding, and the towel-root or rollers are used to control the winding speed before winding the yarn package, and occasionally referred to as the yarn Danny. The take-up rolls are such that the yarn is not mechanically stretched after winding up to winding. The rotary drawing treatment is a method of producing a continuous filament yarn in an extrusion line and then subjecting it to a stretching treatment in a stretching treatment in which a mechanical stretching is applied using a parent wheel, so that the toughness and elongation are controlled to a desired degree. Variations of the method also use one or more heated light wheels to apply heat while the fibers are mechanically stretched to assist in stabilizing the yarn from shrinkage. Each method has its own challenges and advantages. [S ] 20 201012991 The POY of the present invention can be produced in an s_coated spinning production line (refer to Fig. 1A) or a square twist drawing production line (refer to Fig. 1B). In the spin stretching method, the fibers are stretched by a set of godet rolls before being wound around the bobbin. The temperature of the godet can be controlled to achieve the desired fiber stability. Both methods can be used to make the bicomponent fiber of the present invention, but the rotary stretching method is preferred because it is believed that mechanical stretching (using a heated godet or cold godet) stabilizes the yarn and makes the cylinder Tube winding is easier and the deformation process is more reliable. In a preferred embodiment, a rotary stretching process is used to heat the stretching. In other preferred embodiments, the rotary stretching process is used for cold stretching. In another preferred embodiment, the s-cladding method is used. One of the main challenges in the manufacture of the two-component ρ〇γ of the present invention is the breakage during spinning. Filament breakage may weaken the fiber, and yarn breakage will interrupt the line. Avoiding filament breakage and controlling the ultimate elongation and toughness of ρΟγ can be helpful in making deformation without fracture. An important parameter to consider in order to obtain a South quality fiber is its cold spot on the freezing point. It can be carried out at temperatures up to about 30 °C. In a preferred method, it can be carried out at a temperature of from about 〇 ° C to about 2 (the range of TC. The flow rate of the cold shock air must be designed to control the cold shock capability. The change in the flow rate of the cold shock can be based on dpf. For example, finer Dpf cannot tolerate a large amount of air flow rate as large dpf. In several embodiments of the invention, the bicomponent fibers of the present invention have a relatively high spinning speed (less breakage) when the line is operated at a rapid line rate and air is cold. When the excitation flow rate is high, the fiber quality is relatively uniform. The preferred spinning line speed is from 1500 to 5000 m/min, preferably about 4 mm/min. The preferred cold air flow rate is from 〇.2 to 1 m / s and best from 〇 5 to 21 201012991 0.8 m / s. The cold stimuli can be finished by fiber reinforced spun yarn. It is better to add spinning to the fiber before the cold stimuli, because this will Defects are formed on the surface of the fiber, which is undesirable because the stretching and twisting deformation requires uniform yarn surface friction to achieve uniform crimping of the yarn. Spinning can be used to produce commercially available polyolefins. Mainly The type application system is also known to those skilled in the art. The next step is to wind the yarn around the bobbin. In the preferred embodiment, the fibers tend to fall out of the bobbin. A suitable winder is used for The spinning of poly-smoke is also used for the spinning of PES and is known to those skilled in the art. Once wrapped on the yarn package, the yarn package is allowed to be conditioned. The conditioning yarn package is an important step to ensure that the deformation process is as planned. The conditioning conditions are 7〇F±5°F and 5〇%±5% relative humidity for 5 days to 1 day. This will help the surface of the fiber and the yarn balance on the bobbin before deformation. The step is to deform the bicomponent fiber as needed. The deformed fiber provides fluffiness to the fiber so that the garment made of the fiber has a special feeling and desired aesthetic feeling for the consumer. The deformation treatment mechanically increases the blistering degree, Medium elongation, deformation and flat yarn to improve the coverage efficiency and hand feeling of flat yarn. Deformation, for example, involves air jet deformation method, false twist deformation method, twisting/de-adding method, inspection_separation method, stuffing frame curling Law, BC F-spraying method, knitting/unwinding method, edge curling method, or gear curling method. Tensile deformation is preferably applied, for example, to a partially oriented yarn comprising the bicomponent fiber described herein. If the POY to be deformed has several characteristics, it is believed Preferably, the final elongation is such that the fibers do not break during the tensile deformation process. The tensile deformation process involves mechanical stretching at a temperature below the melting point of the fiber. Stretch can be as high as 5% to provide the curl and bulk required for textile applications. Examples of suitable break point elongation ranges can range from about 6 〇 0 / to about 125%. In addition, ρο γ yarns can be crimped or deformed. It has an appropriate balance of heat resistance and recovery strength so as not to be pulled out during subsequent fabric manufacture. This avoids loss of deformation, resulting in a POY yarn that feels like a flat yarn with little or no mechanical elastic properties. An advantage of the present invention is that the fibers must have high curl stability and provide stable curl during deformation, with the result that a fabric made from such fibers can be used to maintain a desired feel for a long period of time. In several embodiments, after conditioning, the fibers are placed in a stretch texturing machine. In the preferred embodiment, the stretch texturing machine operates relatively slowly. In several embodiments, it is desirable to extend the yarn by a factor of from about L2 to about 2.1; in other embodiments, the factor can range from about 1.45 to about 1.9. The yarn can be stretched and heated at a temperature just below the melting point of the polyester and just above the melting point of the polyolefin. In some embodiments, this temperature can range from about 1224&lt;t to about 134&lt;0&gt;C. Twisting is provided when the yarn is stretched and heated. Preferably, the twisting temperature is the same as the heating period in the process so that the yarn is warmed when it is twisted. After the check, the yarn can be processed via a cooling rod. In some cases the cooling rod is quite important. The length of the cooling rod must be considered when designing the material. In the preferred embodiment, the cooling rod is desirably cooled to cool the fibers prior to the fiber guide m(d), and the fibers are quickly rolled up as the disk moves. The disc can be metal or ceramic. The reason for the ceramic disc is that the ceramic rabbit disc does not change as fast as the metal circle 23 201012991. Although so, both are suitable. Polyurethane trays are also suitable; however, it is believed that they may wear quickly and may absorb the spinning finish. The ratio of the appropriate disc to yarn is from 1 to 2.25. The number of revolutions in the ratio of 1.5 is about 1.5 times that of the yarn. It is believed that this difference causes the deformation of the yarn to be promoted. Cooling is helpful here. The reason is that if there is no cooling rod, the warm yarn is treated on the disc. In this case, the warm yarn is damaged. Usually the back of the disc is not checked. It should be noted that if the conditions during the deformation are not uniform, the deformation may be loosely calibrated and the configuration may be eccentric (unexpected). The non-uniformity is derived from the yarn rubbing and the φ shrinkage change 'from the friction with the worn disc, from the presence of dust on the disc' and from the possibility of changing the deformation process. The friction change is the same as the quality of the textured yarn. Note that some of these defects are not too late even after the dyeing of the fabric, which is too late. Usually not desirable. The formation of the woven fabric. The next step is the opening of the fabric' which involves appropriate knitting or weaving techniques known to those skilled in the art. Alternatively, the fabric may comprise a temperate blend, although the blend includes not only the dyeable water-reducing deformed bicomponent fibers comprising the polythene epoxide _ and poly S 曰 4 as described herein, but also elastic fibers, Natural fiber, etc. The bicomponent fiber content present in the fabric is determined by a number of factors, including the fiber, the application, and the desired properties. In the embodiment, the bicomponent fibers can be present in the fabric in an amount of up to about 100% by weight of the fabric. For example, Shi Xi, quantity t. &lt;The bicomponent fiber can comprise about 50% of the fabric. /. To about 100. /〇 Heavy Quantity exists in the fabric. As another example, the bicomponent fiber can be 24, 2010, and the fabric is about 70°/. The amount to about 1% by weight is present in the fabric. In several embodiments, the fibers also comprise other fibers, including elastic fibers, to provide elongation and elastic recovery properties. Examples of suitable elastic fibers include, but are not limited to, rubber fibrils, elastomeric esters, last(1), spandex, lycra (LYCRA) fibers (usually derived from a number of global sources), and pottery (〇〇\\〇1^ fiber (available from The Dow Chemical Company (1) (^〇^1111£^1 Company)). However, it should be noted that the combination of bicomponent fiber and Shibang is strong due to light weight. Extends, thus having undesired properties such as undesired hand, dimensional stability, and discomfort. Thus, a combination of bicomponent fibers and Dow XLA fiber articles is preferred. Additional fibers that can be blended into the fabric include Not limited to natural fibers and synthetic fibers such as nylon, cotton, wool, silk, etc. Dyeing: Optionally, the next step before the formation of the fabric is dyed fabric or fiber. It can be washed before dyeing the fabric or fiber. The fabric and/or bicomponent fibers of the examples may be dyed using any suitable dyeing method. Examples of suitable dyeing methods include, but are not limited to, dispersion dyeing, alkali dyeing, and acid dyeing. It is noted that the polyolefin content is greater than 7% by weight. Double Among the fibers, the manner in which the fibers are dyed may be affected or delayed. One advantage of fabrics comprising bicomponent fibers in accordance with embodiments of the present invention is that even if the fabric and/or fibers comprise polyolefin, the fabrics and/or fibers It can still be dyed. The dyed fabric is determined to have, for example, the same color strength and color fastness as the PES fiber dyed with the disperse dye. The dye can be subjected to reduction cleaning after finishing. Finishing: Selectively, the next step can be finished. The fabric, thus providing the desired characteristics to the fabric 25 201012991. In several embodiments, the fabric can be functionally coated to functionalize to provide performance properties such as, but not limited to, odor control, wicking of water eight, flame retardancy, and the like. Clothing formation: The final step is garment formation. In several embodiments, bicomponent fibers made in accordance with embodiments of the present invention can be blended into textile articles. As previously explained, textile articles include fabrics and articles made of fabrics ( For example, clothing). Examples of suitable textile items include, but are not limited to, sportswear, underwear, swimsuits, occupations Work clothes (such as uniforms and protective clothing), medical service clothes, and other technical clothes. The fabric obtained by the correction and knitting according to the embodiment of the present invention has a shrinkage degree at a high temperature and dimensional stability. The properties of a standard of a fabric made of polyester yarn or polyolefin yarn. The bicomponent fiber of the present invention is suitable for use in sportswear, underwear, swimwear, and clothes that are convenient to wear. In one embodiment, the present invention provides a The method comprises the steps of: (a) selecting a polyester resin for the core of the bicomponent fiber; (b) selecting a polyolefin resin for the skin of the bicomponent fiber, wherein the polyester resin and the polyolefin resin The viscosity ratio is between about 0.4 and about 4; and (c) forming a dyeable sheathed bicomponent fiber having a polyester core and a polyolefin skin having a density of about 1.15 g/cc or less. In one embodiment, the present invention provides a method comprising: (a method of forming a dyeable sheath core bicomponent fiber having a density of about 1.15 g/cc by one method). The method comprises: (1) selecting (four) twin fiber The core of the polyester resin; (9) selected (d) in the skin of the bicomponent fiber of the thin smoke ^ 201012991, the viscosity ratio between the poly-resin resin and the poly-smoke resin is in the range of about 0.4 ± about 4; and (10) formation a dyeable sheath-core bicomponent fiber having a core of about 1.15 g/cm 3 or less, having a core and a thin skin; and (9) deforming the dyeable core-core bicomponent fiber to form a deformed fiber Dyed-sheath core-type bicomponent fibers. In order to facilitate a better understanding of the present invention, the following examples of certain two-sided phases of several embodiments are given. The following examples are in no way to be construed as limiting or defining the scope of the present invention. Parts and percentages are by volume unless otherwise stated. Examples of applicable test methods that can be used are discussed below. The Wiley's 'Tail Strength Test' is based on ASTM D3822-01. For the test, use Textunnat M. Test the automatic crimp shrinkage of the textured yarn according to the procedure of DIN 53 840. During the test period, a gram of touch is about 2 deg Do (3)) deformation &amp; receive $ different load. The resulting length was calculated by calculating the characteristic crimp shrinkage (E%), the crimp modulus (κ%), and the curl stability (B%). In addition, the modified Mate allows for other tests, such as shrinkage testing of filament yarns and fiber yarns, and testing of Taslan yarns. The device consists of a gauze cassette to be tested, a load device with an electronic balance pair to generate different load phases, a control device with a display indicating the length reading, an online connected personal computer (pC) for printing and analysis. The value obtained. The modified Mate's microprocessor control system allows the measurement of the Genk length with a highly variable load and load time. Heating crucibles and hot water baths were used to develop yarn crimping, and later even developed 27 201012991 _ ’ when boiling. The dyeing is carried out using fibers and fabrics. The fabric is manufactured using a mini machine knitting machine. The card has a gauge and the fabric is knitted with a stitch length of 3 mm per stitch. 'Pigmentation, fiber samples and fabric samples were washed at 9 °c&gt;c using 〇3 ml/L sodium hydroxide for 20 minutes to remove any oil and dust. The sample was then hot washed at 1 Torr for 20 minutes and then cold rinsed at room temperature for 1 Torr. The dyeing was performed on a laboratory scale rotary dyeing machine (R〇tadyer) from the Atlas textile test solution. The rotary dyeing machine includes a small steel consumption of 250 ml each having a gas-tight cover. Rong (9) 胄 ^ Install the required dyeing money and the prescribed system, close it, and immerse it in (4) & rotate. The oil bath is heated by a heating coil, and the oil bath heats the container containing the dyeing liquid. The machine can be programmed to control the heating rate, dwell time and cooling time. Cool the machine by continuous supply of cold water. The fabric is dyed in three different colors: FORON bright red e_2Bl 200, Fulong bright red blue as_bg, and Fulong bright yellow. Available from Clariant International Inc. The dyeing liquid was produced as follows. 2% Fulong dye (available from Klein Ryan International), 1 ml/L of Lyocol RDN (a dispersant from Kline International), 2 wt% EGANAL PS solution in distilled water (a uniform dye obtained from Klein International) and a 2% by weight ammonium sulfate solution. The fabric was placed in a dye solution having a sample to liquid ratio of 1:3 Torr and heated to 130 ° C at a rate of 3 ° C / minute. The dyeing temperature was maintained at 130 ° C for 90 minutes and then cooled to 70 ° C at a rate of 4 ° C / minute. In order to remove unfixed dye molecules, reduction cleaning is performed. Reduced clear 28 201012991 Cleansing solution contains 2 g / liter of sodium hydrogen sulfite and gram / liter of sodium hydroxide. The sample was immersed in this solution at a sample to liquid ratio of 1:30. The solution was heated to 70 C at a rate of 4 C per minute in this bath and maintained at this temperature for 2 minutes. Make a restore The cleaning step is twice. After the reduction and cleaning, the sample was subjected to hot washing for 3 minutes, and the ratio of the sample to the washing liquid was 1:3 〇 ', followed by cold washing at room temperature for 1 minute. The fabric was compared to the fabric color depth of a polyester ("pES") fabric standard made using the same knitting machine. The dyed PES fabric is the reference fabric, and the dyed two-component fabric is compared with the reference to determine the color depth of the dyed two-component fabric. This assessment is slightly subjective. In order to test the color fastness, the color fastness method AATCC 61 2A name "color fastness to laundry, home and business · acceleration" was used. Accelerated laundry testing assists in assessing the fastness of laundry shirts that are expected to endure frequent laundry. The sample was tested at 49 ° C (± 2 t) in a tank containing 150 ml of an aqueous solution containing 0.15% of the total volume of the solution (according to the standard). In order to provoke an abrasion action during hand laundry or machine laundry, 50 steel balls each having a diameter of 6 mm are placed in each can. This treatment was continued for 45 minutes using a multi-fiber wicking fabric, after which the sample was washed and dried with distilled water. The washed sample is compared with the original unwashed sample to measure the color change caused by the washing. Quantitative measurement of color changes by gray scale. The dyeing of the dyes on the different components of the multi-fiber wicking fabric was determined by ash dyeing (according to the standard). The materials used to make the fibers of the examples are listed in Table 1. The melt index of the polypropylene (PP) was measured in accordance with the test method ASTMd 1238 at 230 C/2.16 kg. The characteristic reduction of the PES sample was measured using the test method ASTM D 4603. Polymeric secret viscosity system at a given temperature 29 201012991 Using a Goettfert Rheograph 2003 equipped with a flat inlet (180 degrees) of 1 mm long and 1 mm in diameter, nominally 100 to 6300 sec-1 Shear rate determination. Reflected in Table 2. Table 1. Examples of Fiber Raw Material Suppliers Trade Name Melt Index Characteristic Viscosity PP1 Dow Chemical Company 5E66 8.8 Untested PP2 Dow Chemical Company 5D49 38 Untested PET1 Eastman Chemical Co. F61 HC Not tested 0.65 PBT1 Shinkong (Taiwan) DHKF Untested 0.87 Spinning finishing Lurol 7521 Lulu untested Untested The following equations can be found in Table 2A-2D below. If desired, in order to compare the viscosity of PP and PES at the nozzle, the shear rate at the interface between the wall and the two components can be calculated based on the following equation:

LS.LD n,— 90〇5^ . K.%'Pt (W+&amp;%·¥) Ρ: where Q is the melt flow rate; LS is the spinning speed; LD is the yarn dandel; 〆 and β The solid density of the skin and the core respectively; V?/. And V,,% are the volume components of the sheath and the core, respectively; and % is the melt density of the sheath and the core, respectively. Shear rate (r)=-4p r πΡ.ΗΝ where Q is the melt flow rate; r is the distance from the center of the spinning nozzle, r is the radius of the spinning nozzle or half of the capillary diameter listed in the table; HN is the number of nozzle holes . Spinner center to interface distance d is calculated for a given bicomponent fiber composition:

[S 30 201012991 The shear rate at r = d is the shear rate at the interface. PES (PET and PBT) resins are used at about -40 ° C dew point air in a desiccant dryer prior to fiber manufacture, at about 125. (: Temperature drying. Table 2A-H below refers to the following examples. Table 2A·Resin of Examples 1-9

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SO β (take 15!!柃τ/τ)^Wedge 1·Back W Ϊ&amp;4轳墓απ (3.)Dian ding ddfe_ ((ett5&lt;^SHd 柘32 201012991 290 1015 in Ο ON inch Ο 16/ 2800 16/2800 1- 2800 1 〇1 0.5-2 290 906 496 ___ 1 Os ON v〇 inch ο 16/2500 16/2500 2500 1 〇1 0.5-2 290 797 437 〇\〇16/2200 16/2200 2200 〇0.5-2 290 in oo s in yr\ rn 15/1200 15/1200 40/1200 1 100/2240 20/2450 2460 1 —— 0.5-2 290 s 00 s 00 fN cn 20/1400 20/1400 100/ 1415 130/2800 20/2750 2500 1__ . 00 0.5-2 290 1 909 oms rj m 20/2500 20/2500 2500 1_ 〇0.5-2 290 00 409 in o 00 yr\ CN rn 20/2500 20/2500 2500 〇 0.5-2 290 o 00 460 CN en 20/2500 20/2500 2500 〇0.5-2 290 00 s 00 (N 20/2500 20/2500 2500 1_ 〇0.5-2 Spinner set temperature (°C) Shear rate leather (seconds_1) Shear rate core (seconds_1) Viscosity skin (Pa.s) Viscosity core (Pa.s) Cold shock temperature (°C) Cold air flow rate (m/s) Guide roll 1 temperature ( °c) / speed (m / min) guide roller 2 temperature ( ° C) / speed (m / min) guide roller 3 temperature ( ° C) / speed (m / min ) Guide roller 4 temperature (°C) / speed (m / min) Guide roller 5 temperature (°C) / speed (m / min) Winder speed (linear speed) (m / min) Cold draw ratio Spinning finishing content (%) 33 201012991 ^璨套货wu-olf#iK.az^ Example Π iiWy; s-wrapping 00 Ο 1.31 CN (N round 1 0.35 "300 265 290 1158 sm example 16 ! iMrt/ S-Cover 1—Η 00 ί〇〇\ ο 1.31 (N CN 1 Round 1_ 〇 285 VO (N 290 1158 vo cn Example 15 lltV Life • id 1 00 JO ON ο ψ—* cn (N CN Round &lt;n ο 1 285 265 290 992 cn 卜 Example 14 iArt/ -5) C/3 00 JO ο 1.31 r—^ CN (N round ο 285 i________ IT) CM 290 ι- 827 to oo Example 13 TTRI Rotary pull § 04 σ\ ο 1.31 m ΓΜ round in ο 285 CN 290 1- 836 374 oo Example 12 TTRI rotational stretching g (N Ον Ο m ΓΟ (N circular c5 ! 285 265 290 950 425 f^l Example 11 TTRI Rotating Stretching g ο 1.31 Ο m (N Rounds ο 285 in (N 290 950 1 425 p Example 10 1 i TTRI Rotating Stretch % (N ο 1.31 rH CN Round in ο 285 265 290 950 I 425 cn Spinning equipment spinning line type skin % by volume of the compound % by weight of the skin polymer Solid density of the skin (g/cm 3 ) Solid density of the core (g/cm 3 ) Solid yarn density (g/cm 3 ) Spinner detail spinner hole % L/ D Capillary Geometry Capillary Diameter (mm) pp Temperature before Spinner (°c) PES Temperature before Spinner (°C) P Heat· /&lt;-s & Viscosity Skin (Pa.s) 201012991 Ο ο 16/3500 16/3500 3500 〇0.5-2 Ο16/3500 16/3500 3500 〇0.5-2 Ο rH ιη ο 16/3000 16/3000 3000 〇0.5-2 S Ό ο ο 16/2500 16/2500 2500 〇0.5-2 S inch ο 16/1550 16/1550 40/1550 100/1550 25/2200 2200 0.5-2 ο inch d&gt; 16/1200 16/1200 40/1200 100/1200 25/2500 2500 Η 0.5-2 ο inch ο 16 /1800 16/1800 40/1800 100/1800 25/2500 2500 0.5-2 ο inchο 16/2400 16/2400 40/2400 100/2400 25/2500 2500 q rH 0.5-2 Viscosity core (Pa· s) _I S Cold air flow rate (m / sec) Guide roller 1 temperature (°C) / speed (m / min) Guide roller 2 temperature (°C) / speed (m / min) Guide roller 3 temperature (°C ) / speed (m / min) guide roller 4 temperature (°C) / speed ( /min) Guide roller 5 temperature (°C) / speed (m / min) Winder speed (linear speed) (m / min) Cold drawing ratio spinning finishing content (%) 35 201012991 Wipe fee 1iw6- Lt#驷·3Ζ&lt; Ο 2 Η ν〇〇〇私Η τ·^ 00 S Η ο 1-Η 〇ΪΚ Η 1-Η Example 7 TTRI ^〇'Ο ίΝ 〇Example 6 ^^2 Reward S (4) 5 〇\ ^ο 〇\ VO 苌 鲮 ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' (D zss Ul)^ S Take w Fee 孽 孽 Φ 柘槁梃 Example Π i&lt;W Ta^ Φ 1.75 〇^-Η (Ν Example 16 τ3^ 00 Ο Example 15 nW T!^ Ο) ο 宕1 -Η Example 14 lAV 13^ οο 1-Η Example 13 TTRI ο (Ν s Ι^Η in Example 12 TTRI νο oi Example 11 TTRI Ον 00 σν jn Ο τ-Η »ί H CN CN H \ΐφί Take Φ fee孽Μ 鳟ΐ 柘36 996 驷2 ΊΧ ο ΊΧ20· mu $ ff 想$ inch-ε inch·ε inch-ε ce^ Lk 卜 φφφκ sll ran

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SS 1?珈1ΪΦ m umbrella $ ff璁Ms ψί ΐ&gt; inch_rn inch inch inch-ε inch-ε inch-ε inch ε inch _Γη inch-e inch-ε inch _ε inch·ε inch ε inch -ε inch - ε inch - ε 37 201012991 ^^&lt;6)^wz,l-0=#^.HZ&lt; Instance Π To be good m rf ro m Example 16 &lt;iW Good jsid. Γ^Ί Example 15 ι !^ Good mr^i inch 1 Example 14 tiW ta^ Good good m C^i -^- m Example 13 TTRI -Βέί Good m ^tm Example 12 TTRI /ri^ ^ m OK ^ m Example 11 TTRI 泶JCtU m Rn m Example 10 TTRI Λΐ Λΐ ( ( ( n n n n n n n n 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 Different sheath-to-core ratio 62:38, 71:29, 79:21 and 87:13 PP: several pp/pET bicomponent fibers of PET. Figure 1A provides a schematic of an example of such a method, and Table 2A and Table 2C provide methods. Summary of Conditions and Fiber Properties. These PP/PET duplexes were prepared by using the Sils two-component single-ended fiber from the Dow Chemical Company's Research and Development Department in Freeport, Texas. Fiber sample. The spinning line is included in 290. (: Two 1-pair single-screw extruders for feeding the shared yarn bundle. The polypropylene extruder has the following temperature profile: section 丨 · set temperature 180 ° C ' Section 2 - set temperature 200 ° C, section 3 - set temperature 2 l ° ° C, and section 4 - set temperature 220 ° C. Polyethylene terephthalate extruder has the following temperature profile Section 1 - Set Temperature 280 ° C, Section 2 - Set Temperature 290C ' Section 3 - Set Temperature 295 ° C, and Section 4 - Set Temperature 3 〇〇. 〇. Two Zenith Gears The pump supplies the polymer melt to the melt capillary in a volumetric manner. After the spinning nozzle, 'use the fiber chilled tube to chill the fiber, and the cold air velocity is 0.3 m/s. The plastic fiber was directly wound by a winding device to obtain a partially oriented yarn (ΡΟΥ). The fiber pack was wound using a Barmag SW4 winder. Table 2E and Table 2G show the results of the fibers. ρρ/ρΕτ The ratio has a strong influence on the mechanical properties of the PP/PET bicomponent fiber. Increasing the weight percentage of the PP component in the ρρ/ρΕτ bicomponent fiber The ratio is significantly lower than the toughness of the fiber and the elongation at break point. As for dyeability, the hue of these samples is generally considered to be sufficient for commercial fabric production. However, when the polymer skin component accounts for 60% to about 80% by weight of the double-fibre 39 201012991 fibers, the ability to achieve a dark tone is observed to decrease. In at least some embodiments, a reasonable ratio of dye uptake can be achieved by designing a bicomponent fiber to a 70:30% by weight PP:PET composition at a minimum reasonable polysalination percentage. Example 5 A PP/PET bicomponent fiber was produced using a rotational stretching method. Figure 1B provides a schematic of the process, and Tables 2A and 2C provide a summary of the process conditions and fiber properties. These PP/PET bicomponent fiber samples were manufactured using the Sils two-component single-ended fiber production © production line at the Research and Development Division of Dow Chemical Company, Texas. The spinning production line is the same as in Examples 1-4, and the setting values of the extruder are also the same. Two rolls were used before winding, instead of the s-cladding example. Details · Shown in Table 2C. Table 2E shows the results obtained for the fibers of this example. The elongation associated with the fiber does not allow the manufacture of textured fibers. Example 6 A PP/PET bicomponent fiber was produced using a rotational stretching method. Figure iB provides a schematic of the process, and Tables 2A and 2C provide a summary of process conditions and fiber properties. These PP/PET bicomponent fiber samples were used at the Hills Bayhill company in Melbourne, Florida, USA. The polypropylene was extruded using the following extruder: section 1 set point of about 18 〇t, section 2 set point of about 200 ° C, about 210. (: section 3 set point,

And a section 4 set point of about 220 °C. Polyethylene on the use of stupid acid is measured just after the melt pump. The melt temperature of the spinning bundle is about 302 ° C. Extrusion 'Use the following extruder to write on the surface. · About 280 ° C Segment 1 set point, section 29 set point of approximately 29 ° ° C 40 201012991, section 3 set point of approximately 295 ° C, and section 4 set point of approximately 3 ° ° C. At the same time, four yarns were produced using a circular fiber pattern of 48 filaments. The circular melt capillary has a diameter of 0.3 mm and an L/D of 2. The nozzle is mounted in a spinning package equipped with a 40 micron filter. A 15% aqueous solution of Goulston Lurol 7521 was applied at a concentration of 0.5 to 2 weight percent, along with a ceramic coated roll. The fibers exiting the spinner are cooled using a two-stage cold shock system. The upper cold shock zone has a 15 °C temperature and a 1300 rpm fan speed. The lower chill zone has a 15 °C temperature and a 1200 rpm fan speed. The yarn in the yarn bundle can then be slightly interlaced with an ambient temperature of 30 psi in the interlaced injector. At ambient temperature, the fiber was taken at a rate of 1200 m/min for Danny. The fibers were then mechanically drawn using three pairs of chrome guide rolls. The first pair of guide wire feed rolls were set at 40 ° C and operated at 1200 meters per minute. The second pair of guide wire feed rolls were set at 100 ° C and operated at 2440 meters per minute. The third pair of wire feed rolls were set at ambient temperature and operated at 245 G meters per minute. Qing used the bribe. The mandrel drives the winder to run into a yarn package at 2,460 meters per minute. The 7.8 screw angle and the number of thin belts are 2. The properties measured for this yarn are shown in Table 2. POY is deformed on the MPS deformation machine. An example of an Mps morphing machine is shown in Figure 2. The machine (4) is based on the principle of false addition. Deleting the machine The machine has a difference in traditional machine heating, followed by a cooling section, followed by a twisting insert and then taking the money. The heating is carried out by contact electric heating for a relatively low melting point thermoplastic polymer. The first heating chamber consists of two parts, a part of which is longer than 3 meters and a second part of which is 201012991 0.6 m. Before the deformation single t1, there is a cooling rail of about 〖m long. During the test, the first heater temperature was maintained at 12 (rc angmi/min deformation rate. The entire range of '1'32 to 1.38 stretch ratio during the test period was based on this experiment and found that the most suitable draw ratio was h37. During the period, the downward draw ratio was maintained as ι78 and four melamine discs having a disc thickness of 9 mm and a diameter of 52 mm were used. The 100 g yarn package was taken up in the following system, and the maximum stroke was about 25 〇. Millimeter, maximum straight from about 300 mm, weight straight / 75 degree double cone up to kilograms 10 and volume straight / 75 degrees double cone cubic decimeter is 19. ® The properties of this 4 deformed bicomponent fiber are shown in Table 3. Table 3 . Properties of Fibers of Example 6 (dtex) 81 Fiber Tenacity (cN/dtex) 2.5 Fiber Elongation (%) 23 Curl Shrinkage (E%) 5.1 Curl Modulus (K%) 3.4 Curl Stability (B%匕-6.6 Example 7-9 Several pp/pBT bicomponent fibers with a core-to-core ratio of 7〇:3〇 were produced by s-cladding method. PP/PBT bicomponent fiber samples were used in Taipei Taiwan textiles. Preparation of the Siers bicomponent fiber line from the Institute (TTRI). Table 2A and Table 2C provide information on the fiber. The polypropylene extruder has the following temperature profiles: Section 1_Setpoint 200 °C, Section 2 - Setpoint 240 °C 'Section 3 - Setpoint 260. (:, and Section 42 201012991 4-Set point 285 ° C. The polyethylene terephthalate extruder has the following temperature profile: Section 1 - set point 250 ° C, section 2_ set point 26 ° ° c, section 3_ set point 265 ° C, and section 4 - set point 265 ° C. The remaining spinning conditions are shown in Table 2. Different spinning speeds are used. Table 2E shows the data of these fibers. The spinning speed is obviously for bicomponent fibers. The fiber elongation has a strong influence. The toughness of these bicomponent fibers is relatively strange. The color depth of each case is considered good. Example 10-13 is manufactured by the s-cladding method with a core-to-core ratio of 80: 2〇 Several ΡΡ/ΡΒΤ bicomponent fibers. The ΡΡ/ΡΒΤ bicomponent fiber samples were prepared using the Sils bicomponent fiber production line at the Taiwan Taiwan Textile Research Institute (TTRI). Information on these examples is shown in Table 2. And Table 2D. The polypropylene extruder has the following temperature profile: section 1_set point 200 ° C, section 2 - set point 240 ° C, Section 3 - set point 260 ° C, and section 4_ set point 285 ° C. Polyethylene terephthalate extruder has the following temperature profile: Section 1 - set point 250 ° C, zone Section 2 - set point 260 ° C, section 3_ set point 265 ° C, and section 4 - set point 265 ° C. The remaining spinning conditions are shown in Table 2D. Different spinning speeds and draw ratios are used. Table 2F And Table 2H shows the data of these fibers. Unfortunately, the rotational stretching method clearly achieves a wider range of toughness and elongation than the s-cladding method. The draw ratio has a strong influence on the fiber elongation of the bicomponent fiber. The color depth of each case is good. Examples 14 to I7 Several ΡΡ/ΡΒΤ bicomponent fibers having a core-to-core ratio of 81:19 were prepared by the s-cladding method. These ΡΡ/ΡΒΤ bicomponent fiber samples were manufactured at the Kasen bicomponent fiber production line of Taipei Xinkang Fiber & Co., Ltd. using the position 43 201012991. The information of these examples is shown in Table 2B and Table 2D. The polypropylene extruder has the following temperature profile: section 1 · set point 200 ° C, section 2 - set point 240 ° C, section 3 - set point 260. (:, and Section 4-set point 285 ° C. The polyethylene terephthalate extruder has the following temperature profile: Section 1 - Set point 250 ° C 'Section 2 - Set point 260 (:, Section 3 - set point 265 ° C, and Section 4 - set point 265 ° C. The remaining spinning conditions are shown in Table 2. Different spinning speeds, capillary diameters, cold air flow rates, and pp temperatures are used. The lower dp f filaments are produced here. Table 2F and Table 2H show the data of these fibers. The combination of dpf, spinning speed, cold air flow rate and spinning temperature obviously produces fiber brilliance and elongation. Unexpected control, this is important for the deformation process. The color depth of each case is good. The present invention is therefore well adapted to achieve the objects and advantages described and the specific objects and advantages herein. The invention may be modified and carried out in a different and apparent manner, which is apparent to those skilled in the art in the <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; The composition and design details. It is apparent that the specific embodiments disclosed above are subject to change and modifications, all of which are considered to fall within the spirit and scope of the invention. In particular, each numerical range disclosed herein ("from about 3 to about The form of b" or equivalently "from about a to b" or equivalently "from a_b") is understood to mean a sub-set of individual numerical ranges (a collection of all subsets) and is stated within a broad range of such values. In addition, the indefinite article "a" or "an" is used to mean one or more of the elements that are described herein. In addition, the terms in the scope of the claims are not otherwise limited by the patentee. Clearly indicate clearly or otherwise have a general definition. [Simplified Schematic] Figures 1A and 1B are schematic diagrams of two POY methods that can be used for melt-spun core-core bicomponent fibers. Example 1A shows s-packages. Examples of the coating method, and Example 1B show an example of the rotary stretching POY method. Fig. 2 is a schematic view of a typical tensile deformation machine. [Main component symbol description] (None) 45

Claims (1)

201012991 VII. Patent application scope: 1. A method comprising: (a) selecting a polyester resin for the core of the bicomponent fiber; (b) selecting a skin for the bicomponent fiber (also (5) also) a polyolefin resin, wherein a viscosity ratio between the polyester resin and the polyolefin resin is in the range of from about 0.4 to about 4; and (c) forming a polyester having a solid density of about 1.15 g/cm 3 or less Dyed core-type bicomponent fiber of core and polyolefin skin. 2. The method of claim 2, wherein the polyester resin comprises a resin selected from the group consisting of polyethylene terephthalate, ester, and polybutylene. An acid ester, a polytrimethylene p-benzoate, a polytetradecyl terephthalate, a polylactic acid, an amorphous polyester, a polyester copolymer, and combinations thereof. 3. The method of claim 1, wherein the polyolefin resin comprises a resin selected from the group consisting of ethylene, propylene, polypropylene homopolymer, polypropylene copolymer, and Ziegler. _Ziagier_Natta ® catalyzed polypropylene, metallocene-catalyzed polypropylene homopolymer, poly- 4_ fluorenyl-1-pentane, cyclic dilute copolymer, syndiotactic polystyrene, random polymerization Stupid ethylene, hydrogenated polystyrene, and combinations thereof. 4. The method of claim 1, wherein the step of forming a dyeable sheath core bicomponent fiber involves a spinning process that provides at least about 60% elongation to the dyeable sheath core bicomponent fiber by DIN 53 834 determination. 46 201012991 5. The method of claim 1, wherein the step of forming a dyeable sheath-core bicomponent fiber involves a spinning process having a spinning line having from about 1500 m/min to Speed in the range of approximately 5,000 m/min. 6. The method of claim 1, wherein the step of forming the dyeable sheath core bicomponent fiber involves a cold shock treatment wherein the flow rate of the cold air is from about 0.2 m/sec to 1 m/sec. 7. The method of claim 1, wherein the step of forming the dyeable sheath core bicomponent fiber involves a cold shock treatment wherein the cold air temperature is about 5. (: to about 25. (8) The method of claim 1, wherein the step of forming the dyeable sheath-core bicomponent fiber involves a stretching process defined as the winder speed/first guide The draw ratio of the wire roll speed is changed from 1 to 3. 9. The method of claim 1, wherein the step of forming the dyeable sheath core type bicomponent fiber involves s-coating treatment or spin stretching treatment. 10. The method of claim 1, wherein the dyeable sheath-core bicomponent fiber has a denier per filament of less than about 3. 11. The method of claim 1, wherein the The dyed sheath core bicomponent fiber has a denier of less than about 330 dtex. 12. The method of claim 1, wherein the dyeable sheath core bicomponent fiber has a diameter greater than about 1.3 centimeter/ Denier (cN/den). 13. The method of claim 1, further comprising the step of forming the dyeable sheath core bicomponent fiber, deforming the dyeable sheath core bicomponent fiber The step of forming a deformed dyeable sheath core 47 201012991 Parts of fiber 14. The method of claim 1 or 11, further comprising the step of deforming the dyeable sheath-core bicomponent fiber after the step of forming the dyeable sheath-core bicomponent fiber The method of dyeing the dyeable sheath-core bicomponent fiber. The method of claim 11, wherein the dyeable sheath-core bicomponent fiber is stretch-deformed. The method wherein the deformed dyeable sheath-core bicomponent fiber is incorporated into a knit or knit. 17. The method of claim 14, further comprising dyeing the knit or knit. The method of claim 15 further comprising applying a finishing agent to the fabric to provide odour control, moisture wicking, flame retardancy, or a combination thereof. 19. The method of claim 15 further comprising Knitted fabric or woven fabric forms a garment. 20. A method comprising: (a) forming a dyeable dye having a density of about 1.15 grams per cubic centimeter by a method a sheath-core bicomponent fiber, the method comprising: (1) selecting a polyester resin for the core of the bicomponent fiber; (ii) selecting a polyolefin resin for the skin of the bicomponent fiber, wherein the polyester resin The viscosity ratio to the polyolefin resin is in the range of from about 0.4 to about 4; and (iii) forming a polyester core and polyolefin skin having a density of about 1.15 g/cm 3 or less. a dyed sheath core bicomponent fiber; and (b) a dyeable sheath core bicomponent fiber to form a deformed dyeable sheath core bicomponent fiber. 21. The method of claim 20, wherein The polyester resin comprises a resin selected from the group consisting of polyethylene terephthalate, polybutylene terephthalate, polytrimethyl terephthalate, Polytetradecyl terephthalate, polylactic acid, amorphous polyester, polyester copolymer, and combinations thereof. 22. The method of claim 20, wherein the polyolefin resin comprises a resin selected from the group consisting of ethylene, propylene, polypropylene homopolymer, polypropylene copolymer, and Ziegler - Nata catalyzed polypropylene, metallocene catalyzed polypropylene homopolymer, poly-4-methyl-1-pentane, cyclic olefin copolymer, syndiotactic polystyrene, atactic polystyrene, hydrogenation Polystyrene and its compositions. 23. The method of claim 20, further comprising forming the deformed dyeable sheath core after the step of deforming the dyeable sheath core bicomponent fiber to form the deformed dyeable sheath core bicomponent fiber The step of one of the two-component fibers. 24. The method of claim 23, further comprising the step of dyeing the fabric to form a dyed fabric. 25. The method of claim 20, wherein the step of forming the dyeable sheath core bicomponent fiber involves an s-coating treatment or a rotary stretching treatment. 26. The method of claim 20, wherein the dyeable sheath-core double 49 201012991 component fiber has a denier per filament of less than about 3. 27. The method of claim 20, wherein the dyeable sheath-core bicomponent fiber has a denier of less than about 330 dtex. 28. The method of claim 20, wherein the dyeable sheath-core bicomponent fiber has a tenacity greater than about 1.3 centiNewtons per denier (cN/den). 29. The method of claim 20, further comprising applying a finish to the fabric to provide odour control, moisture wicking, flame retardancy, or a combination thereof. 30. The method of claim 20, further comprising forming a garment from the knit or knit. 50