CN1466635A

CN1466635A - Stretchable polymeric fibers and articles produced therefrom

Info

Publication number: CN1466635A
Application number: CNA018166164A
Authority: CN
Inventors: G��D��ƹ��; G·D·菲古利; A·J·索罗卡
Original assignee: EI Du Pont de Nemours and Co
Current assignee: EIDP Inc
Priority date: 2000-09-29
Filing date: 2001-09-28
Publication date: 2004-01-07
Anticipated expiration: 2021-09-28
Also published as: AU2002213030A1; JP2004518828A; KR100760796B1; EP1320638A1; TW567258B; DE60111548T2; KR20030061371A; DE60111548D1; EP1320638B1; MXPA03002752A; ATE298015T1; WO2002027083A1; CN1250787C

Abstract

A stretchable synthetic polymer fiber comprising an axial core formed from an elastomeric polymer, and two or more wings attached to the core and formed from a non-elastomeric polymer, wherein preferably at least one of the wings is mechanically locked with the axial core. The fibers can be used to form garments, such as hosiery.

Description

Stretchable polymeric fibers and the goods of producing by it

Background technology

Technical field

But the present invention relates to drawing of fiber, comprise by the multiple wing of at least two types of forming polymers, synthetic polymeric fibers can stretch.The invention still further relates to the method for producing this kind fiber.The invention still further relates to goods, comprise yarn, clothes etc. by this fibre forming.

Correlation technique

People wish to give many products of being made by synthetic fiber, comprise various clothes, as sportswear and hosiery, and certain extensibility.

Disclosed as the United States Patent (USP) 4,861,660 of authorizing Ishii, known have variety of processes to can be used for giving synthetic thread with extensibility.In one approach, fiber is by edge two dimension or three-dimensional crimp.In another kind of these class methods, by elastomeric polymer, for example, and natural or synthetic rubber, perhaps synthetic elastomer such as polyurethane elastomer, but produce elongate filaments.Yet, anyly in these two kinds of methods all have certain shortcoming.Ishii attempts the shortcoming that overcome this kind long filament with asymmetry by the long filament of two kinds of forming polymers by giving.The asymmetric different directions that causes compound leafy long filament component edge alternately to be turned back coils in the shape of a spiral around axis silk component.So the compound silk that is obtained shows improved extensibility and good sense of touch and gloss.Yet,, actual three-dimensional or helix-coil except its axial screw distortion (turn) so the Ishii fiber after the gentle heat treatment of process, also develops because their section is asymmetric.This kind three-dimensional crimp feature makes moment of torsion on the fiber band, and usually it is found that to give and plant the fabric that fiber makes thus and bring undesirable " edge clot ".This kind fiber intrinsic bulk and inhomogeneity also make it be difficult to make homogeneous, low basic weight or transparent cloister fabric.Owing to these reasons, the Ishii fiber is usually unsatisfactory aspect their knitting or woven one-tenth fabrics.

The United States Patent (USP) 3,017,686 of authorizing people such as Breen also discloses a kind of long filament of being made by two kinds of polymer.These two kinds of polymer are thermoplasticity, hard polymer, do not have elasticity.Why select these polymer, in order that enough difference in shrinkage are arranged so that " wing " of long filament has sinusoidal configuration or " ripple ".Breen is concerned about be the filament surface fin change direction should be frequently can not tight packing to being enough to make between the adjacent filaments, and be indifferent to extensibility.Therefore, the disclosed long filament of Breen does not possess desired high answer of many current fabrics.

As seen, the goods that still need at present a kind of fiber and make by it, it can stretch and have excellent elongation and recovery capacity, does not preferably have undesirable two-or three-dimensional crimp characteristic, also needs to make the short-cut method of this kind fiber and goods.

Summary of the invention

The present invention has the stretched synthetic polymeric fibers of radial symmetric section basically and has solved the problem that prior art exists by providing a kind of.This provides high elongation and high homogeneity and has not had tangible 2-or the unexpected combination of curling of 3-dimension.Therefore, fiber of the present invention be fit to well fine and smooth smoothly, the application of not bulk, height Stretchable fabric.This discovery is unforeseeable, because it is just opposite with United States Patent (USP) 4,861, the 660 disclosed instructions of Ishii.

So, according to the present invention, a kind of synthetic polymeric fibers that stretches is provided, it have radial symmetric section basically and comprise the axial core that contains thermoplastic elastomer polymer and many attached on the core, contain the wing of at least a thermoplasticity non-elastomer polymer.

The present invention also provides the clothes that comprise the above-described synthetic polymeric fibers that stretches.

The present invention also provides a kind of melt spinning method that is used to spin the continuous polymerization fibres, comprise: allow a kind of melt that comprises at least a thermoplasticity non-elastomer polymer and a kind of melt that comprises thermoplastic elastomer polymer pass spinning plate and be configured as the many synthetic polymeric fibers that can stretch, every fiber have radial symmetric section basically and comprise the axial core that contains elastomer polymer and many attached on the core, contain the wing of non-elastomer polymer; Implement quenching with the cooling fiber to leaving the later fiber of spinneret orifice, collect fiber then.

Description of drawings

Fig. 1 is the profiled outline figure of the present invention's six wing fibers.

Fig. 2 A and 2B show a kind of fiber of the present invention, wherein the spirality turn almost completely the periphery (2A) and wherein the spirality turn almost completely not the periphery (2B).

Fig. 3 displaying slightly is undulatory fiber of the present invention.

Fig. 4 is the section configuration diagram of a kind of specific symmetrical double-vane fiber of the present invention, and it has and surrounds core and the thin skin layer between double-vane.

Fig. 5 is the equipment-process schematic representation that can be used for making fiber of the present invention.

Fig. 6 is the side view that can be used for making the overlapping plates filament spinning component of fiber of the present invention.

Fig. 6 A is perpendicular to that overlapping plates filament spinning component shown in Figure 6 is looked and along the plan view of the pore plate A of the line segment 6A-6A intercepting of Fig. 6.

Fig. 6 B is perpendicular to that overlapping plates filament spinning component shown in Figure 6 is looked and along the plan view of the pore plate B of the line segment 6B-6B intercepting of Fig. 6.

Fig. 6 C is perpendicular to that overlapping plates filament spinning component shown in Figure 6 is looked and along the plan view of the pore plate C of the line segment 6C-6C intercepting of Fig. 6.

Fig. 7 is the side view that can be used for making according to the overlapping plates filament spinning component of the some fibre of another kind of embodiment of the present invention.

Fig. 7 A is perpendicular to that overlapping plates filament spinning component shown in Figure 7 is looked and along the plan view of the pore plate A of the line segment 7A-7A intercepting of Fig. 7.

Fig. 7 B is perpendicular to that overlapping plates filament spinning component shown in Figure 7 is looked and along the plan view of the pore plate B of the line segment 7B-7B intercepting of Fig. 7.

Fig. 7 C is perpendicular to that overlapping plates filament spinning component shown in Figure 7 is looked and along the plan view of the pore plate C of the line segment 7C-7C intercepting of Fig. 7.

Fig. 7 F is perpendicular to that overlapping plates filament spinning component shown in Figure 7 is looked and along the plan view of the pore plate F of the line segment 7F-7F intercepting of Fig. 7.

Fig. 7 G is perpendicular to that overlapping plates filament spinning component shown in Figure 7 is looked and along the plan view of the pore plate G of the line segment 7G-7G intercepting of Fig. 7.

Fig. 7 H is perpendicular to that overlapping plates filament spinning component shown in Figure 7 is looked and along the plan view of the pore plate H of the line segment 7H-7H intercepting of Fig. 7.

Fig. 8 is as the fiber profiled outline figure of the present invention of example in the example 7.

Fig. 9 is as the present invention six wing fiber profiled outline figure of example in the example 7.

Detailed Description Of The Invention

According to the present invention, provide a kind of synthetic polymeric fibers that stretches, roughly shown in 10 among Fig. 1,2A, the 2B, 3,4,8 and 9. Fiber of the present invention comprises shown among Fig. 1 12 axially core and a plurality of wings shown among Fig. 1 14. According to the present invention, this axial core comprises thermoplastic elastomer polymer; This wing contains at least a thermoplasticity non-elastomer polymer that is attached on the core. Preferably, but the thermoplasticity non-elastomer polymer is permanent extension (permanently drawable).

Term used herein " fiber " can be general with term " long filament ". Term " yarn (line) " comprises the various yarns that monofilament forms. Term " multifilament yarn " refers generally to two or the yarn that forms of multifilament more. Term " thermoplasticity " refers to the polymer of repeatedly melting-processing (for example, melt spinning). So-called " elastomer polymer " refers to a kind of polymer that is in the homofil form that does not contain diluent, have and surpass 100% extension at break and work as the twice that is stretched to its length, keep 1min, when then unclamping, will in the 1min that unclamps, retract to 1.5 times of the less thaies of its original length. Elastomer polymer in the fiber of the present invention can have less than about 14,000 pounds/square inch (96,500kPa), more typically less than about 8500 pounds/square inch (58, flexural modulus 600kPa), wherein be spun into that homofil exists and according to ASTM standard D790 flexural property room temperature or 23 ℃ and according to basically in this described condition measure. Term used herein " non-elastomer polymer " refers to that any is not the polymer of elastomer polymer. This kind polymer also can be called " low elasticity ", " firmly " and " high-modulus ". So-called " but permanent extension " refers to that this polymer has a certain yield point, and if polymer is stretched to above this point, it will not be returned to its original length.

Fiber of the present invention, when forming along fiber total length polymer adhering to each other by at least two kinds, every kind of polymer belongs to a different category, and for example, when polyamide, polyester or polyolefin, just is called " two composition " fiber. If the elastic characteristic difference of polymer is enough large, consequently can adopt the polymer of identical category, then made fiber is " bi-component " fiber. This kind bicomponent fibre also within the scope of the present invention.

Fiber of the present invention reverses (turn) along its oneself the longitudinal axis, and does not have remarkable two-or curling feature of three-Wei. (in more high-dimensional curling of this kind, the longitudinal axis of fiber itself is broken line or helix configuration; This kind fiber does not belong to the scope of the invention). Fiber of the present invention can be characterized by has basically spiral turn and one dimension spirality turn. " basically spirality turn " both comprised the spirality turn that coils round core of elastomer fully, also comprise the spirality turn that only partly coils around this core, because according to observations, fiber will reach desirable elongation performance and not necessarily requires complete 360 ° spirality turn. Fig. 2 A shows, a kind of have almost completely along the fiber 10 of the basically spirality turn of periphery; Fig. 2 B then shows a kind ofly have almost completely not along the fiber 10 of the basically spirality turn of periphery. " one dimension " spirality turn refers to, although the wing of fiber can be for basically spiral, even if the axis of fiber also keeps straight line basically under low-tension, be different from this and have 2-or the curling fiber of 3-dimension. Yet, have the fiber of certain ripple within the scope of the invention, show as fiber among Fig. 3 10.

Whether have two-and three-dimensional crimp can also be simultaneously the yardstick of judging the radial symmetry of fiber according to the needed amount of tension of fiber stretching substantially (stretching any non-rectilinear part of straight existence) is judged with spirality turn.Fiber of the present invention can require less than about 10% elongation, and is for example about 4%～about 6% more typically less than about 7% elongation, just can fiber is stretching substantially.

Fiber of the present invention has radial symmetric section basically, as can be from Fig. 1 saw.So-called " radial symmetric section basically " is meant a kind of section, wherein the position of each wing and size satisfy following condition: when fiber rotates the 360/n degree around its longitudinal axis, when wherein n is the integer of " n-heavy "-symmetry of representing fiber, produce with rotation before essentially identical section.This section is with regard to round core symmetry substantially in size, polymer and with regard at interval aspect the angle.This kind radial symmetric section basically provides high elongation and high homogeneity and do not have significance degree two-or unexpected combination of three-dimensional crimp.This kind homogeneity has advantage in the High-speed machining of fiber, for example, by thread guide and knitting needle the time, and making level and smooth, nothing flower point (non-" picky ") fabric, aspects such as particularly transparent cloister fabric such as hosiery.Fiber with basic radial symmetric section does not have from the tendency of curling, that is, they do not have obvious two-or three-dimensional crimp characteristic.Can be about general description referring to " textile research magazine " (Texti1e Research Journal) 1967-06, p.449.

For reaching the highest section radial symmetry, core can have the section of circle basically or regular polygon, for example, and as what in Fig. 1,4,8 and 9, see.So-called " circular substantially " refers to, and fiber section center is not more than about 1.2: 1 each other in the length ratio of two axles of 90 ° of intersections excessively.Adopt basic circle or regular polygon core, be different from United States Patent (USP) 4,861, the core in 660 can be protected elastomer, avoids contacting with roller, thread guide and so on, as described when the number of the wing is discussed after a while.A plurality of wings can be arranged in any desired mode around core, for example, and as shown in Figure 1 discontinuously, that is, wing polymer does not constitute the continuous mantel piece (mantel) on the core, does not engage at wicking surface with adjacent foil yet, for example as United States Patent (USP) 3,418,200 Figure 4 and 5 are represented.The wing can have identical or different size, as long as keep basic radial symmetry.Have, each wing can have the polymer different with other wings again, same if basically radially the symmetry of how much and polymer composition kept.Yet for manufacturing simply and reaching radial symmetric easily, preferably, each wing has roughly the same size, and is made by same polymer or blend polymer.Further preferably, each wing surrounds core discontinuously, so that make.

Though the fiber section just is symmetry substantially with regard to size, polymer and the angle intervals of core, but know, the minor swing that departs from ideal symmetrical is because the imperfect or spinneret orifice that flows such as the heterogeneity of quenching or polymer melt is imperfect, generally unavoidable in spinning process.Should be appreciated that this kind fluctuation allows,, for example, provide by one dimension spirality turn to have the requirement elongation and reply as long as they are little to being enough to depart from purpose of the present invention, reduce by two simultaneously to greatest extent-with the fiber of three-dimensional crimp.In other words, fiber is not deliberately made as United States Patent (USP) 4,861, and is such asymmetric in 660.

The wing from core towards outer lug sticks on the core and constitutes many spiralitys of surrounding core at least in part, especially after process effectively heats.Pitch between these spiralitys may increase when fiber is subjected to stretching.Fiber of the present invention has a plurality of wings, and is preferred 3～8, more preferably 5 or 6.The number of the wing that adopts can be determined according to other features of fiber and fiber manufacturing and service condition.For example, when making monofilament, can adopt 5 or 6 wings, especially under higher draw ratio and fiber tension situation.In such cases, wing span can be enough close round core, makes it with the protection elastomer, compares with the situation that adopts less wing number, thereby lessly contact also less fracture of wire, curling round the roll and wearing and tearing with roller, thread guide and so on.The effect of higher draw ratio and fiber tension is that fiber is pressed to the power of roller and thread guide is bigger, thereby makes each wing abduction and cause core of elastomer to contact with roller or thread guide; Therefore, under the situation of high draw ratio and fiber tension preferably more than 2 wings.In monofilament, usually preferred 5 or 6 wings are with the best of breed between reaching easy manufacturing and less core contacting.When requiring multifilament textile, can adopt less to two or three wings, because the possible existence owing to other fibers that core of elastomer contacts with roller or thread guide reduces.

Though preferably, the wing surrounds core discontinuously so that make, and core also can comprise non-elastomer polymer cortex between the wing and core contact point at its outer surface.Fig. 4 represents a kind of fiber 10 with cortex 16.Skin thickness can be between about 0.5%～about 15% of fibre core maximum radius.Cortex can promote adhesion between the wing and the core by more contact points are provided between core and wing polymer, this be one when useful especially characteristic when not fine adhering to each other between the polymer in the biconstitutent fibre.Cortex also can reduce core and contact with abrasiveness between roller, the thread guide etc., especially when fiber has the minority wing.

The core of multiple wing section of the present invention and/or the wing can be solid or hollow or comprise the cavity.In typical case, the core and the wing all are solid.In addition, the wing can have Any shape, for example ellipse, T-, C-or S-shape (for example referring to Fig. 4).The example of useful wing shape can be seen in United States Patent (USP) 4,385,886.T-, C-or S-shape have and help protect core of elastomer, make it to avoid contacting thread guide and roller, as mentioned above.

Weight ratio between total wing polymer and the core polymer can be different, so that desired performance combination to be provided, for example, desired elasticity is provided and provided other performances by wing polymer by core.For example, the weight ratio of inelastic body wing polymer and core of elastomer polymer can adopt about 10/90～about 70/30, preferred about 30/70～about 40/60.When this fiber does not follow yarn to use (for example, hosiery) with certain, for the durable and high elongation that reaches in the use combines, the usually preferred wing/core weight ratio is between about 35/65～about 50/50.

As noted above, the core of fiber of the present invention can be shaped by any thermoplastic elastomer polymer.Useful elastomeric example comprises thermoplastic polyurethane, thermoplastic polyester elastomer, TPO, thermoplastic polyester-amides elastomer and thermoplastic polyether esteramides elastomer.

Useful thermoplastic polyurethane core elastomer comprises those that are prepared by polymer diol, vulcabond and at least a glycol or diamine chain extender.The preferred diol cahin extension agent is because the fusing point of the polyurethane of being made by it is lower than the fusing point made from diamine chain extender.The polymer diol that can be used for preparing elastomer polyurethane comprises PTMEG, polyester-diol, PCDL and their copolymer.The example of this type of glycol comprises poly-(ethyleneether) glycol, poly-(tetramethylene ether) glycol, poly-(tetramethylene-copolymerization-2-methyl-tetramethylene ether) glycol, poly-(ethylene glycol-copolymerization-1, the adipate ester of 4-butanediol) glycol, poly-(ethylene glycol-copolymerization-1, the adipate ester of 2-propylene glycol) glycol, poly-(1,6-hexylene glycol-copolymerization-2,2-dimethyl-1, the adipate ester of ammediol), poly-(3-methyl isophthalic acid, the adipate ester of 5-pentanediol) glycol, poly-(3-methyl isophthalic acid, the pelargonate of 5-pentanediol) glycol, poly-(2,2-dimethyl-1, the dodecylate of ammediol) glycol, poly-(pentane-1, the 5-carbonic acid ester) two pure and mild poly-(hexane-1,6-carbonic acid ester) glycol.Useful vulcabond comprises 1-isocyanato--4-[(4-isocyanato-phenyl) methyl] benzene, 1-isocyanato--2-[(4-isocyanato--phenyl) methyl] benzene, isophorone diisocyanate, 1,6-hexane diisocyanate, 2, two (the 4-isocyanato-phenyl) propane, 1 of 2-, 4-is two (right-isocyanato-, α, α-Er Jiajibianji) benzene, 1,1 '-di-2-ethylhexylphosphine oxide (4-isocyanato-cyclohexane) and 2,4 toluene diisocyanate.Useful diol chain extender comprises ethylene glycol, 1, ammediol, 1,4-butanediol, 2,2-dimethyl-1, ammediol, diethylene glycol (DEG) and composition thereof.Preferred polyglycols is poly-(tetramethylene ether) glycol, poly-(tetramethylene-copolymerization-2-methyl-tetramethylene ether) glycol, poly-(ethylene glycol-copolymerization-1, the adipate ester of 4-butanediol) glycol and poly-(2,2-dimethyl-1, the dodecylate of ammediol) glycol.1-isocyanato--4-[(4-isocyanato-phenyl) methyl] benzene is preferred vulcabond.Preferred diol chain extender is 1, ammediol and 1,4-butanediol.Simple function chain terminating agent such as 1-butanols and so on can add wherein the molecular weight with controlling polymers.Useful thermoplastic polyester elastomer comprises by PTMEG and low molecular weight diols, and for example, molecular weight is less than about 250, with dicarboxylic acids or its diester, for example, terephthalic acid (TPA) or dimethyl terephthalate (DMT), between the polyether ester of prepared in reaction.Useful PTMEG comprises poly-(ethyleneether) glycol, poly-(tetramethylene ether) glycol, poly-(tetramethylene ether-copolymerization-2-methyl-tetramethylene ether) glycol [being derived by the copolymerization between oxolane and the 3-methyltetrahydrofuran] and poly-(ethylidene-copolymerization-tetramethylene ether) glycol.Useful low molecular weight diols comprises ethylene glycol, 1, ammediol, 1,4-butanediol, 2,2-dimethyl-1, ammediol and composition thereof; 1, ammediol and 1,4-butanediol are preferred.Useful dicarboxylic acids comprises terephthalic acid (TPA), and randomly with a small amount of M-phthalic acid, and diester is (for example,＜20mol%) shared.

The useful thermoplastic polyester-amides elastomer that can be used for making the core of fiber of the present invention comprises United States Patent (USP) 3,468, those that describe in 975.For example, the used polyester segment of this type of elastomeric preparation can be passed through ethylene glycol, 1,2-propylene glycol, 1, ammediol, 1,4-butanediol, 2,2-dimethyl-1, ammediol, 1,5-pentanediol, 1,6-hexylene glycol, 1,10-decanediol, 1,4-two (methylol) cyclohexane, diethylene glycol (DEG) or triethylene glycol, with malonic acid, butanedioic acid, glutaric acid, adipic acid, 2-methyl adipic acid, 3-methyl adipic acid, 3, the reaction between 4-dimethyl adipic acid, pimelic acid, suberic acid, azelaic acid, decanedioic acid or dodecanedioic acid or their ester prepares.The example of the polyamide segment in this kind polyesteramide comprises by the reaction between hexamethylene diamine or ten dimethylene diamines and terephthalic acid (TPA), oxalic acid, adipic acid or the decanedioic acid, and those of the ring-opening polymerization preparation by caprolactam.

Those that describe in thermoplastic polyether esteramides elastomer such as the United States Patent (USP) 4,230,838 also can be used for making this fibre core.This type of elastomer for example can prepare like this: the polyamide prepolymer polymers that has the dicarboxylic acids end of the chain earlier with following feedstock production: low molecular weight (for example about 300～about 15,000) polycaprolactam, poly-oenantholcatam, nylon 12, poly-11 lactam, poly-(the amino hendecanoic acid of 11-), poly-(12 amino dodecanoic acid), poly-(adipic acid 1,6-hexylene glycol ester), poly-(azelaic acid 1,6-hexylene glycol ester), poly-(decanedioic acid 1,6-hexylene glycol ester), poly-(hendecanoic acid hexylene glycol ester), poly-(dodecylic acid hexylene glycol ester), poly-(adipic acid 1,9-nonanediol ester) and so on, with butanedioic acid, adipic acid, suberic acid, azelaic acid, decanedioic acid, heneicosanedioic acid, terephthalic acid (TPA), dodecanedioic acid etc.This prepolymer subsequently can with the polyethers of the hydroxyl end of the chain, for example, poly-(tetramethylene ether) glycol, poly-(tetramethylene-copolymerization-2-methyl tetramethylene ether) glycol, poly-(propylidene ether) glycol, poly-(ethyleneether) glycol and so on react.

As mentioned above, the wing can be shaped by any inelastic body or hard polymer.The example of this base polymer comprises inelastic body polyester, polyamide and polyolefin.

Useful thermoplasticity inelastic body wing polyester comprises poly-(ethylene glycol terephthalate) (" 2G-T ") and copolymer thereof, poly-(terephthalic acid (TPA) 1, the ammediol ester) (" 3G-T "), polybutylene terephthalate (PBT) (" 4G-T ") and poly-(2, the 6-(ethylene naphthalate)), poly-(terephthalic acid (TPA) 1, the 4-cyclohexanedimethanoester ester), poly-(lactide), poly-(azelaic acid glycol ester), poly-[2,7-(ethylene naphthalate)], poly-(glycolic acid), poly-(EGS ethylene glycol succinate), poly-(α, the alpha-alpha-dimethyl propiolactone), poly-(right-hydroxybenzoate), poly-(hydroxybenzoic acid-glycol ester), poly-(ethylene isophthalate), poly-(terephthalic acid (TPA) 1, the 4-butanediol ester), poly-(terephthalic acid (TPA) 1,6-hexylene glycol ester), poly-(terephthalic acid (TPA) 1,12-dodecanediol ester), poly-(terephthalic acid (TPA) 1, the 4-cyclohexanedimethanoester ester) (trans), poly-(1, the 5-(ethylene naphthalate)), poly-(2, the 6-(ethylene naphthalate)), poly-(terephthalic acid (TPA) 1, the 4-cyclohexanedimethanoester ester) (cis) and poly-(terephthalic acid (TPA) 1,4 cyclohexane dimethanol ester) (trans).

Preferred inelastic body polyester comprises poly-(ethylene glycol terephthalate), poly-(terephthalic acid (TPA) 1, ammediol ester) and poly-(terephthalic acid (TPA) 1,4-butanediol ester) and their copolymer.When adopting the higher melt polyester, can in polyester, add comonomer so that spinning at a lower temperature as poly-(ethylene glycol terephthalate).This type of comonomer can comprise line style, ring-type and the branched aliphatic dicarboxylic acids (for example, glutaric acid) of 4～12 carbon atoms; The aromatic dicarboxylic acid (for example, M-phthalic acid) of 8～12 carbon atoms beyond the terephthalic acid (TPA); The line style of 3～8 carbon atoms, ring-type and branched aliphatic glycol (for example, 1, ammediol, 1,2-propylene glycol, 1,4-butanediol and 2,2-dimethyl-1, ammediol); And the aliphatic series of 4～10 carbon atoms and araliphatic ether glycol (for example, two (2-ethoxy) ethers of quinhydrones).Comonomer can about 0.5～15mol% in copolyester quantity exist.M-phthalic acid, glutaric acid, adipic acid, 1, ammediol and 1, the 4-butanediol gathers the preferred comonomers of (ethylene glycol terephthalate) for being used to, because their commercial are easy to get and cheaply.

Wing polyester also can comprise a small amount of other comonomers, as long as these comonomers do not have negative effect to fibre property.These type of other comonomers comprise 5-sulfoisophthalic acid sodium, and consumption is for example between about 0.2～5mol%.Can add very on a small quantity, for example about 0.1～about 0.5 weight % is a benchmark in whole components, the trifunctional comonomer, and trimellitic acid for example is in order to control viscosity.

Useful thermoplasticity inelastic body wing polyamide comprises poly-(hexamethylene adipamide) (nylon 6,6); Polycaprolactam (nylon 6); Poly-oenantholcatam (nylon 7); Nylon 10; Poly-(12-lauric lactam) (nylon 12); Nylon 46 (nylon 4,6); Polyhexamethylene sebacamide (nylon 6,10); Poly-(dodecane two acyl hexamethylene diamines) (nylon 6,12); The polyamide of dodecane diamines and n-dodecane diacid (nylon 12,12), the PACM-12 polyamide of deriving by two (4-aminocyclohexyl) methane and dodecanedioic acid, the copolyamide of 30% M-phthalic acid-own di-ammonium salts and 70% adipic acid hexamethylenediamine salt, the copolyamide of the highest 30% pair (right-the acylamino-cyclohexyl) methylene and terephthalic acid (TPA) and caprolactam, poly-(4-aminobutyric acid) (nylon 4), poly-(8-aminocaprylic acid) (nylon 8), poly-(heptanedioyl heptamethylene diamine) (nylon 7,7), poly-(suberoyl octamethylenediamine) (nylon 8,8), poly-(nonanedioyl nonamethylene diamine) (nylon 9,9), poly-(nonanedioyl decamethylene diamine) (nylon 10,9), poly-(decanedioyl decamethylene diamine) (nylon 10,10), poly-[1, two (4-amino-cyclohexyl) methane of 10-decane two formyls], poly-(m xylylene adipamide), poly-(decanedioyl p dimethylamine), poly-(heptanedioyl 2,2,2-trimethyl hexamethylene diamine), poly-(decanedioyl piperazine), poly-(the amino hendecanoic acid of 11-) (nylon 11), poly-6I hexamethylene isoterephalamide, poly-hexamethylene terephthalamide and poly-(9 aminononanoic acid) (nylon 9), polycaprolactam.Copolyamide also can use, for example, poly-(hexamethylene adipamide-copolymerization-2 methyl pentamethylenediamine), wherein the hexa-methylene part can account for about 75～90mol% of total diamines derivative moiety.

Useful polyolefin comprises the copolymer and the terpolymer of polypropylene, polyethylene, polymethylpentene and one or more ethene or propylene and other unsaturated monomers.For example, the fiber that comprises the inelastic body polypropylene wing and elastomeric polypropylene core belongs in the scope of the invention; This kind fiber is a bicomponent fiber.

The combination of elastomer and non-elastomer polymer can comprise polyetheramides, for example, and the polyether ester amides core of elastomer and the polyamide wing, and the polyester elastomer core and the polyester wing.For example, wing polymer can comprise nylon 6-6 and copolymer thereof, for example, poly-(hexamethylene adipamide-copolymerization-2 methyl pentamethylenediamine), wherein hexa-methylene partly accounts for about 80mol%, randomly mix, and the core polymer can comprise the polyether ester amides of elastomeric blocks with about 1%～about 15wt% PA-12." polyether ester amides of block " is meant that polymer has soft chain segment (long-chain polyether), and covalently (by ester group) is bonded on the hard segment (shorter-chain-length polyamide).Similarly definition is corresponding to segmented polyetherester, block polyurethane and the like.Nylon 12 can improve the adhesion of the wing and core, especially works as core mainly by PEBAX ^TMWhen 3533SN (Atofina supply) constitutes.Another kind of preferred wing polymer can comprise and is selected from following inelastic body polyester: poly-(ethylene glycol terephthalate) and copolymer thereof, poly-(terephthalic acid (TPA) 1, ammediol ester) and gather (terephthalic acid (TPA) 1,4-butanediol ester); The core of elastomer that is fit to be used with it can comprise polyether ester, the latter comprises the PTMEG that is selected from poly-(tetramethylene ether) glycol and poly-(tetramethylene-copolymerization-2-methyl tetramethylene ether) glycol, with terephthalic acid (TPA) or dimethyl terephthalate (DMT) and be selected from 1, ammediol and 1, the product of the low molecular weight diols of 4-butanediol.

The elastomeric polyether ester core also can be used with the inelastic body polyamide wing, and is especially when using tackifier, described as other places of this paper.For example, the wing of this kind fiber can be selected from: (a) poly-(hexamethylene adipamide) and with the copolymer of 2 methyl pentamethylenediamine and (b) polycaprolactam; And the core of this kind fiber can be selected from: (a) polyether ester amides and (b) poly-(tetramethylene ether) glycol or poly-(tetramethylene-copolymerization-2-methyl tetramethylene ether) glycol and terephthalic acid (TPA) or dimethyl terephthalate (DMT) and be selected from 1, ammediol and 1, the product of the glycol of 4-butanediol.

The method of making above-described polymer is technical known, and can comprise the employing of catalyst, co-catalyst and chain branching agent, just as technically known.

Because core has high elasticity, so it can absorb when tensile fiber and the flyer lead that adheres to when relaxing causes compression in its twist process, reverses and tensile force.These power might cause peeling off of the wing and core polymer, if the too weak words of their adhesive force.In the middle of adhesion can be formed by the wing and core one or more selection or as previously described cortex employing and/or adopt the additive that strengthens polymer one or both of adhesion to improve.Additive can join in one or more wings, so that each wing has the adhesive force identical or different with respect to core.Therefore, the selection of typical core and wing polymer should guarantee that they are fully compatible, thereby so that they bonded to each otherly seldom separate between fiber manufacturing and operating period.

Also have, can in the wing and/or core polymer, add additive and improve adhesion, for example, nylon 12, for example, 5wt% is a benchmark with total wing polymer, promptly, poly-(12-lauric lactam) also is called " 12 " or " N12 ", presses trade name Rilsan " AMNO " available commercial by Atofina.Also has maleic anhydride derivative (for example, Bynel ^CXA, a kind of registration mark of E.I.Du Pont Company, or Lotader ^Ethene/acrylic ester/maleic anhydride terpolymer is by the Atofina supply) also can be used to modified polyether acid amides elastomer, to improve its adhesion to polyamide.As another example, thermoplastic novolac phenolic resin, for example, HRJ12700 (SchenectadyInternational), number-average molecular weight between about 400～about 5000, can join in elastomer (being total to) the polyether ester core to improve itself and the adhesion of (being total to) polyamide wing.The consumption of linear phenol-aldehyde resin should be between 1～20wt%, more preferably 2～10wt%.The example that can be used for linear phenol-aldehyde resin of the present invention includes but not limited to, P-F, resorcinol-formaldehyde, p-butylphenol-formaldehyde, paraethyl phenol formaldehyde, to hexylphenol-formaldehyde, n-propyl phenol-formaldehyde, to amyl phenol-formaldehyde, paraoctyl phenol-formaldehyde, to heptylphenol-formaldehyde, to the alkyl of nonyl phenol-formaldehyde, bisphenol-A-formaldehyde, naphthols formaldehyde and rosin (the particularly rosin of part maleinization)-(for example, the tert-butyl group-) phenol-modified ester (for example, pentaerythritol ester).Referring to the U.S. Patent Application Serial Number 09/384,605 of approval, applying date 1999-08-27 is about improving the embodiment of the technology of adhesion between copolymerized polyester elastic body and the polyamide.

Also can be used as adhesion promoting additive with the functionalized polyester of maleic anhydride (" MA ").For example, poly-(mutual-phenenyl two acid bromide two alcohol ester) (" PBT ") can reach the functionalized of usefulness MA by the free radical grafting in Bitruder, referring to J.M.Bhattacharya, " PolymerInternational (2000-08), 49:8, pp.860～866, the application of the compatilizer of the binary blend that report also in the literary composition, the PBT-grafting-MA that generates the minority percetage by weight are made up of poly-(mutual-phenenyl two acid bromide two alcohol ester) and nylon 66 and poly-(ethylene glycol terephthalate) and nylon 66 as (difference).For example, this kind additive can be used to more firmly (being total to) polyamide wing of fiber of the present invention is adhered on (being total to) polyether ester core.

Polymer that uses among the present invention and the fiber of making, yarn and goods can comprise conventional additive, can add during polymerization process, perhaps join in the polymer of making or goods, and can performance that improve polymer or fiber be contributed.The example of these additives comprises that antistatic additive, antioxidant, antimicrobial, flame-proofing agent, dyestuff, light stabilizer, polymerization catalyst and various auxiliary agent, tackifier, matting agent (delustrants) are as titanium dioxide, delustering agent (matting agents) and organophosphorus ester.

Other can be applied to the additive on the fiber, for example in spinning duration and/or drafting process, comprise antistatic additive, slipping agent, tackifier, hydrophilizing agent, antioxidant, antimicrobial, flame-proofing agent, lubricant and their combination.In addition, these additional additives can add during the various different steps of method, just as technically known.

Fiber of the present invention can be continuous filament yarn form (multifilament textile or monofilament) or staple fibre (comprising that for example, fibre bundle or staple fibre spin yarn).Drawn fiber of the present invention can have about filament denier of 1.5～about 60 (about 1.7～67 dtexs).Typically, the fully-drawn fibers of the present invention with polyamide wing has the intensity of about 1.5～3.0g/dtex (gram/dtex); And have the fiber of the polyester wing, then have about 1～2.5g/dtex, specifically with the wing/core than deciding.The fiber of making of the present invention boil the back elongation can be at least about 20%, preferably at least about 40%, to improve the comfortable and next to the shin of final clothes.

Though top description concentrates on the advantage when fiber has basic radial symmetric section, this kind symmetry although usually wish, is not that embodiment of the present invention are desired under following situation:

(a) synthetic polymeric fibers that can stretch has that boil after-contraction and require at least about 20% just can stretching substantially fiber less than about 10% elongation;

(b) synthetic polymeric fibers that can stretch comprises the axial core that contains elastomer polymer and a plurality of attached to the wing that contains non-elastomer polymer on the core, and its SMIS is included in the cortex of the non-elastomer polymer between the wing and the core contact point at its outer surface;

(c) synthetic polymeric fibers that can stretch comprises the axial core that contains elastomer polymer and a plurality of attached to the wing that contains non-elastomer polymer on the core, and its SMIS has basic circle or regular polygon section; Perhaps

(d) synthetic polymeric fibers that can stretch comprises the axial core that contains elastomer polymer and a plurality of attached to the wing that contains non-elastomer polymer on the core, and wherein at least one wing has T, C or S shape.

Can make, use according to the fiber of these four embodiments and can be so as to one or multiple advantages described herein are provided.

When making the yarn that comprises plurality of fibers, fiber can have the fibre count of any hope and the filament denier of any hope (dpf), and the ratio of elastomer and non-elastomer polymer can differ from one another to another root from a fiber.Multifilament textile can comprise many different fibers, for example, and 2～100 fibers.In addition, the yarn that comprises fiber of the present invention can have the filament line density of a certain scope and also can comprise non-fiber of the present invention.

Synthetic polymeric fibers of the present invention can be made fabric according to known way, comprise adopt woven, through compile, weft knitting (comprising circular knitting machine) is knitting, perhaps hosiery is knitting.This kind fabric has excellent elongation and recovery capacity.This fiber can be used for textiles and fabric, and for example, drapery, and clothes (comprising women underwear and hosiery) to make all or part of of clothes, comprise narrow cloth (lace).Clothes, for example, the hosiery and the fabric that adopt fiber of the present invention and yarn to make it is found that level and smooth, light weight and unusual homogeneous (" not having the flower point "), possess good elongation and recoverability.

In addition, according to the present invention, provide a kind of melt spinning method that is used to spin the continuous polymerization fibres.This method will be described in conjunction with Fig. 5, and this figure is the equipment schematic diagram that can be used for making fiber of the present invention.Yet, know that other equipment also can use.The inventive method comprises that allowing the melt that comprises elastomer polymer pass spinning plate is configured as the many synthetic polymeric fibers that can stretch, and they comprise the axial core that contains elastomer polymer and a plurality of attached on the core and contain the wing of non-elastomer polymer.Referring to Fig. 5, thermoplasticity hard polymer charging (not shown) is incorporated into the overlapping plates filament spinning component 35 from 20, and the (not shown) of thermoplastic elastomer polymer charging simultaneously is incorporated into the overlapping plates filament spinning component 35 from 22.Pre-combination and back all can be adopted in conjunction with the spinning plate assembly.Two kinds of polymer are extruded with the form of undrafting wire 40 from have the overlapping plates filament spinning component 35 that is designed to produce the spinneret orifice that requires section.The inventive method is included in also that tow leaves after the spinning plate their quenchings so that the fiber cooling, in any known mode, for example by the cold air among Fig. 5 50.Any suitable method of quenching all can adopt, for example lateral blowing or Radial Flow wind.

Tow randomly adopts known technology with finishing agent such as silicone oil, randomly is aided with dolomol, and 60 places handle at oiling roller shown in Figure 5.After the quenching, these tow then carry out drawing-off, boil the back elongation so that they show at least about 20%.Tow can be accepted drawing-off at least one drafting step, for example feeding between roll dies 80 (it can 150～1000m/min running) and the drawing roller 90, represent schematically that as Fig. 5 the result forms drafted fibre 100.Drafting step can with the spinning coupling, thereby produce full stretched yarn, perhaps, if require partially oriented yarn,, have certain hour to postpone between spinning and the drawing-off according to the method for separately carrying out.Drawing-off also can be finished when winding filament becomes warp thread; Be those skilled in the art's so-called " drawing-off warpings ".Can give the draw ratio (only otherwise influence the carrying out of processing because of fracture of wire) of any requirement of tow; For example, full orientated yarns can be made by about 3.0～4.5 times draw ratio; Partially oriented yarn is made by about 1.2～3.0 times draw ratio.Here, draw ratio is the peripheral speed of the peripheral speed of drawing roller 90 divided by hello roll dies 80.Drawing-off can be at about 15～100 ℃, and representative value carries out for about 15～40 ℃.

Drafted fibre 100 randomly can partly relax, for example in Fig. 5 110 places by water vapour.Any degree heat is lax all can be implemented at spinning duration.Manyly more lax, the elasticity of long filament is big more, and the contraction in downstream process is few more.Can have through the final drafted fibre after lax as described below and to extend after boiling at least about 20%.Preferably make firm spun tow heat lax about 1～35%, be benchmark with drafted fibre length, and then it is wound up, so that it can be as typical hard yarn operation.

This quenching, drawing-off and the long filament that randomly relaxed can be sentenced 200～about 3500m/min at the up-coiler 130 of Fig. 5 subsequently, the speed of the highest 4000m/min collection of reeling.Perhaps, if spinning and quenching is multifilament, but fiber boundling and randomly accept interlacing and handle then, and then on up-coiler 130 with for example the highest 4000m/min, for example with the velocity interval coiling of about 200～about 3500m/min.Monofilament and multifilament textile can be reeled according to same way as on the up-coiler 130 of Fig. 5.Multifilament spin and quenching after, but the tow boundling and randomly interlacing handle, and then reel according to the common way in present technique field.

Any moment after the drawing-off, two composition long filaments all can do under lax fully situation-or wet-heat treatment, desired elongation and recoverability to develop.This kind is lax can be finished at the long filament production period, for example during the relaxation step of describing in the above, and perhaps after long filament has been attached in yarn or the fabric, for example, during the processing of kiering, dyeing and so on.Heat treatment with fiber or form of yarns can be adopted, and for example, hot-rolling or hot case or the expanded step of injection-net (jet-screen) are implemented.Preferably, the lax heat treatment of this kind can be implemented after fiber is in yarn or the fabric, so that it can be processed as the inelastic body fiber before this; Yet if wish, it also can first heat treatment and lax fully, then reels with high elongated fibers form.For making final fabric reach big homogeneity, fiber is heat treatment and lax equably.Heat treatment/lax temperature can be between about 80 ℃～about 120 ℃, if heat medium is the words of dry air; About 75 ℃～about 100 ℃, when heat medium is hot water; And about 101 ℃～about 115 ℃, when heat medium is superatmospheric pressure press water steam (for example, in potheater).The temperature deficiency may cause seldom or not have thermal effectiveness, and temperature is too high, may make the core of elastomer polymer melt.Heat treatment/relaxation step can be finished in the several seconds usually.

As mentioned above, spinneret orifice has the style corresponding to fiber requirement section of the present invention, as mentioned above, perhaps is fit to produce other pairs composition or bicomponent fiber.Spinneret orifice can adopt any suitable method cutting, for example, adopts laser boring, as United States Patent (USP) 5,168, and described in 143, boring, electrical discharge machining (EDM) and punching are as known in the art.Spinneret orifice can utilize the laser beam cutting, to reach the symmetric good control of fiber section of the present invention.Spinneret orifice can have any appropriate size and can cut into continuously (pre-in conjunction with) or discontinuous (back in conjunction with).Discontinuous spinneret orifice can obtain by getting out many apertures along certain pattern, and this pattern will allow that polymer merges and forms multiple wing section of the present invention below the spinning plate face.

For example, long filament of the present invention can adopt as shown in Fig. 6,6A, 6B and 6C in advance in conjunction with the filament spinning component manufacturing.In Fig. 6, provide the side view of overlapping plates filament spinning component as shown in Figure 5, polymer flows along the direction of arrow F.First plate in the filament spinning component is the plate D that comprises the polymer melt pond and have traditional design.Plate D is seated on the metering plate C (sectional drawing is shown in Fig. 6 C), and the latter is seated in again on the optional distribution plate B (sectional drawing is shown in Fig. 6 B), and the latter is seated in again on the spinning plate A (sectional drawing as shown in Figure 6A), and the latter is supported by filament spinning component base plate E.Distribution plate B under metering plate C and the metering plate aligns and contacts; Distribution plate also aligns with it on spinning plate A and contacts; Though having tiny through hole, spinning plate A lacks substantive counterbore; Spinning plate is alignd with spinning plate base plate (E) again and is contacted, and the latter's hole is greater than spinneret orifice.The situation of alignment is such, and the polymer that is fed among the metering plate C can pass distribution plate B, spinning plate A and spinning plate base plate E, thereby forms fiber.Melt collection board D is a kind of conventional plate, is used for to the metering plate feed.Thickness and the rigidity of polymer melt collection board D and filament spinning component base plate E are enough big, but so that their fastness ground compress relative to one another, thereby prevent that polymer from leaking between the overlapping plates of filament spinning component.Plate A, B and C are enough thin, so these pores can cut with laser means.Preferably, the hole in the filament spinning component base plate (E) is tubaeform, for example is about 45 °～60 ° angles, to allow as-spun fibre not contact its bore edges.Further preferably, when require polymer in advance in conjunction with the time, different polymer can contact with each other (pre-combination) less than about 0.30cm before fibre forming, metering plate C, optional distribution plate D and the desired section configuration of spinning plate design E be generally less than 0.15cm, so that can show in the fiber more accurately.The more accurate regulation of fiber section also can be by means of according to United States Patent (USP) 5,168, and boring method is realized in the 143 described plates, wherein, is reduced to basic monotype light beam (for example, TM from the multi-mode light beam of solid-state laser ₀₀Pattern) and focus on diameter less than the point of 100 μ m and 0.2～0.3mm place, metallic plate top.The motlten metal that produces is by driving out of from the metallic plate lower surface with the coaxial mobile band hydraulic fluid of laser beam.Uppermost distribution plate end face can shorten to less than about 0.30cm to the distance of spinning plate face.

For manufacturing has the silk of any number symmetrical distribution wing polymer moieties, in each piece plate, will adopt the pore of similar number symmetric arrays.For example, in Fig. 6 A, spinning plate A is represented as perpendicular to the view in the plane of Fig. 5 overlapping plates filament spinning component.Plate A among Fig. 6 A links to each other with center circle spinneret orifice 142 by 6, the wing spinneret orifice 140 of symmetric arrays is formed.Each wing spinneret orifice 140 can have different in width 144 and 146.Fig. 6 B expresses complementary distribution plate B, and is tapered the optional slit 154 of the dispensing orifice 150 that it has from nose end 152 to connection dispensing orifice and center hole 156.Fig. 6 C represents metering plate C, comprises dip hatch 160 that is used for wing polymer and the center dip hatch 162 that is used for the core polymer.Polymer melt collection board D can have any traditional design known in the art.Filament spinning component base plate E has through hole, these holes enough greatly and outwardly flaring (for example along 45～60 °) make tow not touch hole wall, shown in side view in Fig. 5 and 6 with path away from newborn tow.The overlapping plates filament spinning component, spinning plate A～D is in alignment with each other, make the core polymer from polymer melt collection board D, pass the center dip hatch 162 of metering plate C and pass 6 little spinneret orifices 164, pass the center circle spinneret orifice 156 of distribution plate B, pass the center circle spinneret orifice 142 of filament spinning component plate A and the typhon oral pore of process filament spinning component base plate E and flow out.Meanwhile, wing polymer passes the wing polymer dip hatch 160 of metering plate C from polymer melt collection board D, the dispensing orifice 150 that passes distribution plate B is (wherein if exist optional slit 154, so these two kinds of polymer contact with each other first at this), pass the wing polymer spinning hole 140 of spinning plate A, and go out through the orifice flow among the filament spinning component base plate E at last.

Filament spinning component of the present invention can be used for melt extruding with producd fibers of multiple synthetic polymer.In filament spinning component of the present invention, polymer can directly be fed in the spinneret orifice, because spinning plate does not have the counterbore (substantial counterbore) of essence.What is called does not have the counterbore of essence to be meant, the length of the counterbore of any existence (comprising any sunk part that connects a large amount of spinneret orifices) is about 60% less than spinneret orifice length all, preferably less than about 40%.The multicomponent polymeric stream strand fine spinneret orifice of the one-tenth back side inlet from spinning plate directly is metered into specified point, eliminated a plurality of polymer stream and still arranged when just in feeding-passage, merging the quite a while (or distance) apart from entering spinneret orifice, as ordinary circumstance, the polymer migration problem that is occurred.

What come in handy is, the function of two boards is merged in one, and specific practice can adopt on the one or both sides of a single plate and make groove, and connects groove by suitable through hole.For example, can cut out depression, groove and sinking (for example, adopting spark machined) at the upstream side of spinning plate, and allow them play effects such as distributing passage, shallow ridges, unsubstantiality counterbore.

Various comprise two or the fiber of more kinds of polymer can utilize filament spinning component of the present invention to make.For example, not open and/or claimed other biconstitutent fibres and the bicomponent fiber of this paper also can be made like this, comprises United States Patent (USP) 4,861, disclosed section in 660,3,458,390 and 3,671,379.The fiber section of making for example can be arranged side by side, eccentric core-skin, with one heart core-skin, the wing-and-core, the wing-and-Pi-and-core and the like.In addition, but filament spinning component of the present invention also can be used to the spinning can divide or non--devillicate.

In Fig. 7, express the side view of filament spinning component overlapping plates as shown in Figure 5, wherein polymer flows along the direction of arrow.The usage of this kind assembly illustrates in below the example 6 as an example.First plate in the filament spinning component is the plate D that comprises the polymer melt pond.This plate has traditional design known in the art and comprises the passage 20 and 22 that is respectively applied for the introducing inelastic body wing and cortex polymer and elastomer polymer.Plate D is seated on the metering plate H, and latter's fork is seated on the distribution plate G, and the latter is seated in again on the spinning plate F, and the latter is seated in again on the plate C, and the latter is seated in again on the plate B, and the latter is seated in again on spinning plate or the plate A, and the latter is supported by filament spinning component base plate E.Thickness and the rigidity of polymer melt collection board D and filament spinning component base plate E are enough big, but so that their fastness ground compress toward each other, thereby prevent that polymer from leaking between the overlapping plates of filament spinning component.Every other plate is enough thin, so spinneret orifice can cut with laser means.Fig. 7 A～7C and Fig. 7 F～7H represents the plan view of the replacement overlapping plates filament spinning component of some fiber of the present invention that can be used for shop drawings 5 view profile representatives.Joint in Fig. 7 A～7C and Fig. 7 F～7H is to utilize general type to realize with the pre-filament spinning component that combines identical shown in Fig. 6 side view to the core of elastomer polymer with the inelastic body wing and cortex polymer.In the overlapping plates filament spinning component of this replacement,, used 5 blocks of plates to substitute distribution plate B and metering plate C though also adopt filament spinning component base plate E, spinning plate A and polymer melt collection board D.Penetrate spinning plate A, shown in Fig. 7 A, cut out wing spinneret orifice 210, the central core polymer is with cortex polymer hole 214 and be connected slit 212.Plate B shown in Fig. 7 B, cuts out wing spinneret orifice 220 and central core polymer and cortex polymer hole 222 with connecting, centrally is positioned at the top of spinning plate A respectively.Above plate B, centrally place plate C, shown in Fig. 7 C, cutting out conical wing and cortex polymer spinneret orifice 230, central core polymer and cortex polymer hole 232 on it with connecting.The annulus of plate 234 is still connecting plate.Above plate C, centrally place plate F, shown in Fig. 7 F, wherein cutting out wing spinneret orifice 240 and central core polymer and cortex polymer hole 242 with connecting.Above plate F, centrally place plate G, shown in Fig. 7 G, cutting out wing spinneret orifice 250, conical wing polymer and cortex polymer hole 252, and central core polymer hole 254 with connecting.Above plate G, centrally place plate H, shown in Fig. 7 H, cutting out wing polymer spinning hole 260, wing polymer and cortex polymer hole 262 and central core polymer hole 264 with connecting.

The present invention will utilize following indefiniteness embodiment to illustrate.Following test method once existed

Use among the embodiment.

Test method

Term boils the back elongation, and is general with following term technically: " % extends (elongation) ", " can reply elongation ", " can reply contraction " and " latent crimp ".It is general with following term that term " can not be replied contraction ": " % contraction ", " apparent contraction " and " the absolute contraction ".

The elongation of fiber performance for preparing among the embodiment (extend, boil after-contraction after boiling and boil back elongation answer) is measured as follows.The reeled yarn at 5000 dawn (5550dtex (dtex)) is wound on 54 inches (137cm) ryces.The reeled yarn both sides of lopping all are included in the total denier.Measure the initial reeled yarn length under 2g weight (length C B) and the 1000g weight (0.2g/ dawn) (length L B) respectively.Reeled yarn is placed in and handles 30min (" boiling ") in 95 ℃ of water, measures 2g weight (length C A _Initially) and 1000g weight (length L A _Initially) under initial (boiling the back) length.Measured after the length under the 1000g weight, measure 30 seconds again after (length C A _30s) and (length C A after 2 hours _2h) length under the 2g weight.Boiling after-contraction calculates according to 100 * (LB-LA)/LB.Boiling the back percentage elongation calculates according to 100 * (LA-CA@30s)/CA@30s.Boiling the back elongation replys according to 100 * (LA-CA _2h)/(LA-CA _Initially) calculate.

Being undertaken 20% and 35% by following program can test with the unload forces under the elongation (available stretch).5000 (5550 dtex) total denier biconstitutent fibre reeled yarn after preparation is boiled.The both sides of lopping reeled yarn all are included in the total denier.(Canton MA) uses under 21 ℃ and 65% relative humidity condition the Instron tensile testing machine.With reeled yarn be placed in the grip of testing machine, 3 inches (76mm) space between two anchor clamps.Testing machine is finished the cycle of 3 times " stretch-also-lax (load-also-unloading) ", and each loading cycle has maximum 500g power (0.2 gram/dawn), measures the power of unloading cycle for the third time then.Being determined at 20% and 35% of the 3rd unloading cycle can be with effective dawn number (the actual line density under the test elongation state just) in when elongation." 20% and 35% can with elongation " be meant that this reeled yarn has relaxed 20% and 35% respectively from 500g power in the period 3.With the dawn (mg/ dawn) of milligram/effectively be the unload forces that unit record 20% and 35% can be when extending.

Peel off (disengaging) of the wing of fiber and core is to measure like this, 5000 dawn (5550 dtex) reeled yarns (the reeled yarn size comprises the both sides of institute's lopping) of at first reeling on the 1.25m ryce.Reeled yarn is handled 30min in potheater, under 102 ℃ of water vapour conditions.From reeled yarn, select 20cm length single fiber and doubling once.The silk head of formed circle sticks with glue band and is pasted together in bottom, and the wire ring that pastes is hung vertically on the hook.The weight at 1 gram/dawn (wire ring at 25 dawn hangs 50g) is fixed on following (adhesive tape is pasted) end of wire ring.Lift weight to wire ring and fluff, and then slowly put down, until being applied with total weight with the stretching wire ring.After 10 such cycles, under the situation of amplifying, check the situation of peeling off and the grading of wire ring.3 samples are pressed following grading:

0=does not have the wing/visible core along fiber spin-off

1=observes slightly in the corner of one or more knots and peels off

2=props up suspention hook friction place at fiber and observes and peel off

(be ringlet, and only at the base point place) appears peeling off in the 3=edge

The little looped pile of 4=shows along whole fiber spin-off

5=peels off (is great circle along the fiber total length) on a large scale everywhere

The result of 3 samples is average.

Measure R ₁And R ₂: on the microphoto of fiber section, make two circles, a circle (R ₁) be the circumscribed circle that surrounds the roughly outermost extent of core polymer, another circle (R ₂) be the roughly inscribed circle of interior degree of wing polymer moieties.

Example 1A

Adopt as shown in Figure 5 that equipment spins the biconstitutent fibre of the present invention with symmetrical six wing sections, substantially as shown in Figure 1.Filament 40 adopts the spinning temperature spinning of spinning plate 35 and 265 ℃.From 20 of Fig. 5, a kind of melted nylon polymer for preparing routinely and have a relative viscosity of about 45～60 is introduced in the filament spinning component 30.This nylon polymer that forms the alar part of two composition long filaments is poly-(adipyl 1,6-hexamethylene diamine-copolymerization-2-methyl isophthalic acid, the 5-pentanediamine), wherein there is (6/MPMD (80/20)-6) in the hexa-methylene part with 80mol%, wherein having added 5wt% is benchmark in total wing polymer, nylon 12 (poly-(12-lauric lactam)) (also being called " 12 " and " N12 ") (Rilsan ^" AMNO ", the Atofina supply).The effect that nylon 12 adds is to promote the wing-core to adhere to.Alar part accounts for the 45wt% of fiber.Second polymer, the core of formation fiber is incorporated into the filament spinning component 30 of Fig. 5 from 22.The core polymer is elastomeric blocks polyether ester amides (PEBAX ^TM3533SN, the Atofina supply; Flexural modulus 2800psi (19,300kPa)) and metering by volume add to produce core, account for the 55wt% of biconstitutent fibre.

Form by the overlapping plates that is designated as A～E among Fig. 6 in conjunction with filament spinning component 30 in advance.Spinneret orifice connects 0.015 inch (0.038cm) thick stainless steel spinning plate A cutting, becomes around 6 wings of symmetrical centre with 60 ° of symmetric arrays, and method is pressed United States Patent (USP) 5,168, and 143 is described.As shown in Figure 6A, each wing spinneret orifice 140 is a straight hole, the major axis center line passes symmetrical centre and has from the tip to the length of center circle spinneret orifice 142 (diameter 0.012 inch [0.030cm]) circumference 0.049 inch (0.124cm), and the initial point of radius and symmetrical centre are same point.Import at spinneret orifice does not have counterbore.The width that plays 0.027 inch (0.069cm) this section chord degree 144 from the tip is 0.0042 inch (0.0107cm); The width of the length 146 of all the other 0.022 inch (0.056cm) is 0.0032 inch (0.0081cm).Each wing cuts into the circle that radius is a half width at the tip.0.015 inch (0.038cm) thick distribution plate B aligns with spinning plate A, makes that the spinneret orifice among its dispensing orifice and the spinning plate A is suitable.Six wing spinneret orifices of plate B be 0.094 inch (0.239cm) long and 0.020 inch (0.051cm) wide, and its wing tip to make radius be half round end of its width.Shown in Fig. 6 B, each is tapered to circle (0.006 inch [0.015cm] diameter) openend 156 six wing spinneret orifices 150 of distribution plate B, and long and 0.0018 inch (0.0046cm) slit 154 of growing extends to centre bore 156 with 0.013 inch (0.033cm) then.The diameter of centre bore 156 in this plate is 0.0125 inch (0.032cm).Slit 154 connects an end of centre bore and each wing dispensing orifice.Metering plate C is 0.010 inch (0.025cm) thick (referring to Fig. 6 C).Every dip hatch centrally is arranged in above the distribution plate B chord shaft centre line or above symmetrical centre.Hole 160 diameters of center dip hatch 152 and each wing all are 0.010 inch (0.025cm); 0.120 inch at the center in the centre distance hole 162 in hole 160 (0.305cm).To center dip hatch feeding be the molten elastomer polymer that filters, it is from traditional melt collection board D (referring to Fig. 6) and form final intrastitial core key element.What 6 dip hatches in the outside of plate C fed is non-elastomer polymer, from melt collection board D, will become the polymer wing.Macropore among the filament spinning component base plate E (typically, 0.1875 inch (0.4763cm) diameter) (referring to Fig. 6) aligns with spinneret orifice among the spinning plate A and enlarges with 45 ° of cone angles.Spinning plate A, distribution plate B and metering plate C are sandwiched between melt collection board D and the filament spinning component base plate E.With regard to the typical case, plate E is 0.2～0.5 inch, and (0.4～1.3cm) is thick; Plate D is 0.02～0.03 inch, and (0.05～0.08cm) is thick.

Nascent monofilament 40 (referring to Fig. 5) is cooled to curing under the effect of moving air 50, and applies the finishing agent (about 5wt% is a benchmark with the fiber) that comprises silicone oil and Metallic stearates at 60 places.Fiber continues to the draw zone of feeding between roll dies 80 and the drawing roller 90, wherein respectively twines several circles on each roller.The speed of drawing roller 90 is to feed 4 times of roll dies 80, to reach 4 times draw ratio; The latter's speed is 350m/min.Subsequently, fiber is accepted the processing of 6psi (0.87kPa) water vapour in chamber 110; Up-coiler 130 relaxes so that fiber obtains part (20%) with the speed running than drawing roller 90 low 20%, reduces the contraction of final fiber whereby.The fiber 120 of drawing-off and partial relaxation is reeled on up-coiler 130 and is had the line density of 27 dawn (30 dtex).

Example 1B

Adopt as shown in Figure 5 that equipment spins the two composition yarns with 10 fibers, every fiber has 6 by nylon 6-12 (poly-(dodecanoyl hexamethylene diamine)) (inherent viscosity 1.18), Zytel ^158, the trade name of du pont company, flexural modulus are 295, the radial symmetric wing that 000psi (200 ten thousand kPa) constitutes, and PEBAX ^TMThe core of 3533SA, basic identical among method that adopts and the example 1A, different is: the spinning plate temperature is 240 ℃, distribution plate B does not have slit 154, apply the finishing agent that the 4wt% polyether ester is a main component, rather than the finishing agent that applies among the example 1A, draw ratio is 3.75 times, Yarn relaxation 15%.The yarn of drawing-off and partial relaxation has the line density of 80 dawn (88 dtex).The section microphoto of making fiber is shown in Fig. 8.

Example 1C

Prepare the two composition yarns of the present invention that a kind of 10 rhizoids are formed according to the method that is similar to example 1A, every rhizoid has 5 by poly-(mutual-phenenyl two acid bromide two alcohol ester) (4G-T) (Crastin ^Model 6129, E.I.Du Pont Company's registration mark; 350,000psi flexural modulus (2.4 hundred ten thousand kPa)) the radial symmetric wing of forming, and have HYTREL ^(E.I.Du Pont Company's registration mark) 3078 elastomeric polyether ester cores, different is: every block of plate has 5 wing polymer supply orifices at a distance of 72 ° of symmetric arrays; Metering plate C has one group of extra hole, and each wing is one on the center line of the wing; Poly-additive in this 4G-T wing does not have; Adopt 4wt% to contain as United States Patent (USP) 4,999, that describes in 120 contains the finishing agent of polysiloxanes finishing agent to apply among the alternate example 1A; Feeding roll dies speed is 250m/min; Draw ratio is 3.6 times; Lax is 20psi (2.9kPa) with steam pressure.The yarn of drawing-off and partial relaxation has the line density of 150 dawn (165 dtex).

About extra one group of hole of one on each wing on the wing center line of metering plate C, every hole is 0.005 inch (0.013cm) diameter, and apart from 0.0475 inch of the symmetrical centre (0.121cm) in hole.Yet melt collection board D supply molten polymer is can't help in this extra hole.

The yarn for preparing in example 1A～C with regard to extending, boil after-contraction after they boil and boiling the back elongation and reply, compares.Test procedure is that at first preparation is wound on 54 inches 5000 dawn (5550 dtex) reeled yarns on (137cm) ryce.The both sides of lopping reeled yarn are included in the total denier.With a kind of light measure initial reeled yarn length respectively and record following measurement result with a kind of heavy weight:

CB=adds the reeled yarn length that the 2g weight is measured

LB=adds the reeled yarn length that 1000g weight (0.2 gram/dawn) is measured.

Hot water treatment, or " boiling " promptly, are placed on reeled yarn in 95 ℃ of water to soak and measure following initial and final lengths after the 30min:

CA (initially)=add the 2g weight, reeled yarn length after the processing of mensuration

LA=adds 1000g weight (0.2 gram/dawn), reeled yarn length after the processing of mensuration.

CA (30s)=after after LA measures, taking off the 1000g weight and loading the 2g weight, the reeled yarn length of measuring in the time of 30 seconds

After measuring, CA (2h)=LA adds the reeled yarn length that the 2g weight was measured in 2 hours

These measurement results are used to calculate yarn property by following formula:

Boil back elongation=10 * (LA-CA@30s)/CA@30s

Boil after-contraction=100 * (LB-LA)/LB

Boil the back and reply percentage=100 * (LA-CA@2h)/(LA-CA@ is initial)

Boiling after-contraction, boil the back percentage elongation and extending the yarn property of replying of the contained example 1A of table 1～1C yarn all is fit to hosiery and apparel applications.

Table 1

	Example 1A	Example 1B	Example 1C
	Example 1A	Example 1B	Example 1C	Dawn number/number of fiber after the drawing-off	????27den. ????(30dtex)/1	????80den. ????(88dtex)/10	????150den. ????(165dtex)/10
Wing number	????6	????6	????5	Dawn number/number of fiber after the drawing-off	????27den. ????(30dtex)/1	????80den. ????(88dtex)/10	????150den. ????(165dtex)/10
Wing number	????6	????6	????5	The wing	????6/MPMD-6 ????+5％N12	????6-12	????4G-T
Core	????PEBAX ^TM????3533SN	????PEBAX ^TM????3533SA	????HYTREL ^TM????3078	The wing	????6/MPMD-6 ????+5％N12	????6-12	????4G-T
Core	????PEBAX ^TM????3533SN	????PEBAX ^TM????3533SA	????HYTREL ^TM????3078	Boil the back elongation	????78	????76	????75
Boil after-contraction percentage	????19	????16	????17	Boil the back elongation	????78	????76	????75
Boil after-contraction percentage	????19	????16	????17	Boil the back and reply percentage	????94	????92	????94

Example 2

With the transparent frivolous socks shank-feathering base of 4 fibrages (knitting) that prepare among the example 1A.Adopt a kind of four to eat thread stockings machine (Lanoti 400 types, No. 402 pins).Typical case's four road inlet wires that fiber adopts by commercial panty hose, the braiding of the flat pin socks of every line leg tissue.Long filament be directly from proterties as " firmly " yarn, just do not knit with the enterprising hand-manipulating of needle of the winding cake of rubber elastomer characteristics.This four road long filament directly is fed in the machine needle independently by the bobbin cradle thread guide, and wherein each thread guide has typical tradition that common hosiery machine inelastic body yarn the adopts ring slack adjuster of beating.This socks shank-feathering base is, adopts 700rpm at the thigh place, and at ankle with the 800rpm braiding.Every kind of about 2min of blank braiding comprises the shank in standard nylon-spandex panty hose style.

The blank dimension of panty hose is regulated to satisfy the standard size specification by traditional approach.Then, socks shank-feathering base is accepted heat treatment to activate the potential elongation characteristics in the biconstitutent fibre.This finishes with one of two kinds of methods.In one approach, the panty hose blank is placed in the cloth bag and in room-temperature water bath and stirs.Water-bath is increased to 85 ℃ with the water vapour heating in 45min, under agitation cool off with room temperature water then.Be contained in the interior blank of bag through centrifugal dehydration and at 100 ℃ of baking oven inner dryings.In another approach, blank utilizes the steam of atmospheric pressure to shrink by the cylinder decatize.In the two any method, fiber of the present invention becomes all after lax heat treatment that height can stretch but is not bulk.Subsequently, blank takes out from sack and is sewn into panty hose by traditional approach.Subsequently, these clothes are packed in the bag once more and are adopted the standard nylon socks to dye with ACID DYES program, 99 ℃ the highest dye bath temperature.The clothes dehydration of dyeing, drying is also carried out heat setting on the socks plate of 4 inches (10.2cm) bottom width of standard.The potheater of socks setting is set in 102 ℃ socks was handled 4 seconds, subsequently 99 ℃ of dryings 30 seconds.Panty hose is placed on the socks plate in order that make them keep for a short time as far as possible under the corrugationless state again keeping fabric to be in.The outward appearance of these ready-made clothes is fit to the purposes of transparent frivolous socks, and they show good elongation and answer.They are measured as follows in the contraction of each arrangement stage, and the size of concurrent ready-made article and the uniformity of size all are fit to the industry manufacturing of socks product.

Grey cloth has been carried out transverse extension mensuration, also is to assess the ability of shrinking and meeting the typical sizes standard afterwards in 10min hot water treatment (boiling).The program that transverse extension is measured is, each socks blank is enclosed within on the Dinema S.R.L. instrument, opens anchor clamps, and measures the elongation when the power on the anchor clamps reaches 4500g.Determination data be the mid point (" knee ") of 3 inches (7.6cm) (thighs), toe and crotch below the crotch and more than the toe about 3.5 inches (8.9cm) positions such as (" foots ") obtain.The tensile elongation of socks leg is measured also similar, and just each blank is sandwiched between the anchor clamps of instrument along its length.Elongation numerical value is: thigh place, 22%; Knee, 21%; Foot, 17%; Full leg stretches 138%.Record in thigh, knee, foot and full leg stretch from blank to boiling about 17～24% numerical value of dimensional contraction, and its size further changing after heat setting and the dyeing seldom again, showing that these socks blank dimensions are stabilized to satisfies the industrial production needs.

Example 3

The yarn that obtains from example 1B is used to make broadwise-stretching machine of elongation fabric at loom, makes commodity TACTEL by name ^" Crowfoot (the crowfoot) " tissue of (E.I.Du Pont Company's registration mark) wherein adopts 70 dawn (78 dtex) nylon 6-6 warp thread, 102 of per inch (40/cm).Become dividing sinkers as weft yarn with the two of 80 dawn (89 dtex) 10 rhizoids of example 1B, 100 picks per inch of filling density (39/cm).This woven grey cloth fabric width is 62.5 inches (159cm).Collating program of this woven grey cloth comprises: 71 ℃ of kierings of relaxed state, and subsequently in lax kiering 118 ℃ of second time.After the drying, fabric has 36 inches of lax fabric widths (91cm).Fabric then at 100 ℃ with the standard nylon acid dyeing.Wet fabric width after the dyeing is 33 inches (84cm).At last, fabric is air-dry, without heat setting.Final fabric width is 33.25 inches (84cm).This fabric is not bulk but level and smooth and corrugationless after air-dry only.Fabric shows good elongation and answer, and the feel of splendid hard fibre and aesthetic qualities.At lax finished product state, this fabric has following performance:

Basic weight: 4.45 ounce per square yard (151g/m ²);

Thickness: 0.0103 inch (0.0262cm);

Filling density: 112 picks per inch (44/cm);

Through close: 192 warp thread/inches (76.8/cm).

Long this fabric of the wide 10cm of taking advantage of of 5cm is accepted to stretch the assessment of dragging to full extension along broadwise with hand.This fabric is extending be equivalent to its relaxed length 65% and after hand is stretched 95% one section that drags above the difference of its elongation and lax length, show answer.

Example 4

The yarn that obtains from example 1C is used to make broadwise-stretching machine of elongation fabric at loom, is made into commodity TACTEL by name ^The plain weave of (E.I.Du Pont Company's registration mark) adopts 70 dawn (78 dtex) nylon 6-6 warp thread, 102 of per inch (40/cm).Become dividing sinkers as weft yarn with the two of 150 dawn (166 dtex) 10 rhizoids of example 1C, filling density is 50 picks per inch (19.7/cm).The fabric width of this woven grey cloth is 63.5 inches (161cm).This fabric at relaxed state at 82 ℃ of kiering 20min.Fabric carries out drying with standard nylon with acid dyeing and at 93 ℃ at 100 ℃ then.Final dry state fabric width is 33.5 inches (85cm).This fabric is not bulk but level and smooth and corrugationless.Fabric shows good elongation and answer, and the feel of splendid hard fibre and aesthetic qualities.At lax finished product state, this fabric has following performance:

Basic weight: 4.5 ounce per square yard (152g/m ²);

Thickness: 0.0115 inch (0.0292cm);

Filling density: 60 picks per inch (23.6/cm);

Through close: 204 warp thread/inches (80/cm).

Long this fabric of the wide 10cm of taking advantage of of 5cm is accepted to stretch the assessment of dragging to full extension along broadwise with hand.This fabric is extending be equivalent to its relaxed length 72.8% and hand stretch drag above the difference of its elongation and lax length 97% after show answer.

Example 5

The benefit of tackifier (referring to example 5B) is adopted in the explanation of this example in the manufacturing of fiber of the present invention.Biconstitutent fibre adopts equipment shown in Figure 5 and is similar to the described condition of example 1A and filament spinning component carries out spinning.Every drawn fiber has the line density of 26 dawn (28.6 dtex).Boil the back performance and peel off evaluation result and be stated from table 2.

Example 5A

The core of elastomer polymer is elastomeric polyethers esteramides (PEBAX ^TM3533SN is by the Atofina supply), thereby by volume measuring supply, spinning duration forms the core that accounts for every fiber 51wt%.The blend of nylon that forms 6 wings is poly-(adipyl 1,6-hexamethylene diamine-copolymerization-2-methyl-pentanediamine), described in example 1A.The section microphoto of making fiber is shown among Fig. 9.

Example 5B

According to as example 5A, spinning a kind of fiber substantially, have 6 by 6/MPMD (80/20)-6 polyamide (poly-(adipyl 1,6-hexamethylene diamine-copolymerization-2-methyl isophthalic acid, 5-pentanediamine), wherein hexa-methylene part exists with 80mol%) wing formed, and elastomeric polyethers esteramides (PEBAX ^TMCore 3533SN), different is as example 1A, to add 5wt% poly-(12-lauric lactam) to promote the adhesion between the wing-core in wing polymer.

Peeling off of the wing of fiber and core is to measure like this, 5000 dawn (5550 dtex) reeled yarns (the reeled yarn size comprises the both sides of institute's lopping) of at first reeling on the 1.25m ryce.Reeled yarn is handled 30min in potheater, under 102 ℃ of water vapour conditions.From reeled yarn, select 20cm length single fiber and doubling once.The silk head of formed circle is pasted together in bottom sticking with glue band, and the wire ring that pastes is hung vertically on the hook.The weight at 1 gram/dawn (0.9dN/tex) (wire ring at 25 dawn [28 dtex] hangs 50g) is fixed on following (adhesive tape is pasted) end of wire ring.Lift weight to wire ring and fluff, and then slowly put down, until being applied with total weight with the stretching wire ring.After 10 such cycles, under the situation of amplifying, check the situation of peeling off and the grading of wire ring.3 samples are pressed following grading:

0=does not have the wing/visible core along fiber spin-off

1=observes slightly in the corner of one or more knots and peels off

2=props up suspention hook friction place at fiber and observes and peel off

The little looped pile of 4=shows along whole fiber spin-off

5=peels off (is great circle along fiber) on a large scale everywhere

The mean deviation as a result of 3 samples is stated from table 2.

Table 2

	Example 5A	Example 5B
	Example 5A	Example 5B	Wing polymer	????6/MPMD-6	????6/MPMD-6+5％N12
The core polymer	????PEBAX ^TM????3533SN	????PEBAX ^TM????3533SN	Wing polymer	????6/MPMD-6	????6/MPMD-6+5％N12
The core polymer	????PEBAX ^TM????3533SN	????PEBAX ^TM????3533SN	Boil the back elongation	????66.7	????92.1
Boil after-contraction percentage	????31	????19	Boil the back elongation	????66.7	????92.1
Boil after-contraction percentage	????31	????19	Peel off grade	????3.8	????1.2

This result shows, adopts a pair of core and the wing polymer selected can make the fiber antistripping of making (example 5A), and adopts tackifier to produce advantageous effect to the grade of peeling off of further reduction fiber, for example, is reduced to about 2.5 grades following (example 5B).

Example 6

The explanation of this example is a kind of to have the fiber of the present invention of special two wing sections and comprises the application that also is connected the thin skin layer of the wing with wing same polymer continuously.In such cases, the side of each wing (termination that is different from the wing) is attached on the core, so this wing has T-font (referring to Fig. 4).Thereby the thin skin layer is wrapped in core and avoids contacting of elastomer and various surfaces.

In the fiber of this example is made, poly-(dodecanoyl hexamethylene diamine) (Zytel ^158) as wing polymer; A kind of polyether ester has poly-(tetramethylene-copolymerization-2-methyl tetramethylene ether) glycol soft segment and mutual-phenenyl two acid bromide two alcohol ester (4G-T) hard block simultaneously, and is basic as United States Patent (USP) 4,906, and 721 described such preparations are as core.The addition of 3-methyltetrahydrofuran in the copolyether glycol is 9mol%, and the number-average molecular weight of glycol is 2750, and 4G-T together the mol ratio of PTMEG be 4.6: 1.

The configuration as spinning plate shown in 7A～7C and Fig. 7 F～7H is adopted in the polymer spinning.In spinning plate A (Fig. 7 A), the diameter in core-skin hole is 0.011 inch [0.028cm].The core of the first plate B (Fig. 7 B)-and-diameter of hole skin is 0.008 inch [0.020cm].The core of the first plate B (Fig. 7 B)-and-diameter of hole skin is 0.025 inch [0.064cm].The external diameter of the annulus of this plate is 0.100 inch [0.254cm].The core of the 3rd plate F (Fig. 7 F)-and-diameter of hole skin is 0.125 inch [0.318cm].The diameter in the central core hole of the 4th plate G (Fig. 7 G) is 0.025 inch [0.064cm], and the external diameter of this plate annulus is 0.100 inch [0.254cm].The diameter in the central core hole of the 5th plate H (Fig. 7 H) is 0.033 inch [0.084cm].

The size of each centre bore and annulus guarantees that polymer flows as described below.The core polymer cuts across the central core hole of every block of plate.The wing-and-the outer part of wing spinneret orifice and core hole that cortex polymer is fed into spinning plate A by wing spinneret orifice and the outer part of centre bore of plate B respectively.Therefore, the wing contacts in spinning plate A first with core.The conical wing of plate C-and-the cortex spinneret orifice is fed into partial polymer downwards in the wing spinneret orifice of plate B and with partial polymer and upwards is fed into the centre bore outward flange of plate F, thereby form the part cortex.The conical wing of plate C-and-the cortex spinneret orifice is by the hole feed of plate F.The hole of plate F is by the hole feed of plate G.The bellmouth of plate G is given the centre bore outward flange feed of plate F, thereby forms another part cortex.Therefore cortex occurs in plate F with contacting first of core.Each the hole feed among the plate G is given in each hole among the plate H respectively.

In the fiber of Zhi Zaoing, the weight ratio of the wing and core is 56/44 in this example, and cortex accounts for about 10wt% of total wing content.This percentage can change between about 2～about 20wt%.10 rhizoids are through spinning, and 3.6 times of drawing-offs without lax, are reeled with the speed of 900m/min at last.After relaxed state was accepted the atmospheric pressure steam treatment, fiber shrank immediately, just demonstrated good elongation and answer subsequently.

Example 7

This examples show for reaching desired elongation of fiber of the present invention and answer, not necessarily requires peripheral helicoid shape turn completely.

The wing that uses among the example 1C and core polymer are spun into silk by being similar to the filament spinning component that uses among the example 1A, and different is: the wing spinneret orifice length among the spinning plate A is 0.023 inch (0.058cm); 0.008 inch of center hole diameter (0.200cm); Distribution plate B does not have slit 154 (referring to Fig. 6 B); 10 fibers spin and form an one thread, and every fiber has 33wt% wing polymer; 3.3 times of yarn drawing-offs without relaxation processes, are reeled with 1040m/min then.Fig. 8 and 9 is microphotos of the fiber in the yarn of making, shows that the existing peripheral helicoid shape of wing turn also has non-peripheral turn.Periphery turn section and non-peripheral turn section have similar response to lax fully: 10cm length (yarn) is at atmospheric pressure steam treatment after-contraction 4.8cm.Elongation repeatedly-also-relaxation cycle (to 10cm) causes finally being the length of 6.5cm, however it is retracted to 4.8cm once more after being subjected to the atmospheric pressure steam treatment, show it is a kind of reversible deformation.

Though the present invention is described in detail, know that top description only is to illustrate, and is intended to illustrate the present invention and embodiment preferred thereof.By normal experiment, those skilled in the art it will be apparent that under the premise without departing from the spirit of the present invention still can make various modifications and variations.

Claims

1. extending synthetic polymeric fibers has radial symmetric section basically and comprises: contain thermoplastic elastomer polymer axial core and a plurality of attached on the core, comprise the wing of at least a thermoplasticity non-elastomer polymer.

2. the fiber of claim 1, it comprises 3～8 wings, have at least about 20% the back of boiling and extend, requirement just can be stretching substantially with fiber less than about 10% elongation, have primary circle core section, and wherein the weight ratio of inelastic body wing polymer and core of elastomer polymer in about 10/90～about 70/30 scope.

3. the fiber of claim 1, wherein non-elastomer polymer is selected from inelastic body polyamide, polyolefin and polyester, and elastomer polymer then is selected from thermoplastic polyurethane, thermoplastic polyester elastomer, TPO, thermoplastic polyester-amides elastomer and thermoplastic polyether esteramides elastomer.

4. the fiber of claim 1, wherein non-elastomer polymer be selected from a) poly-(hexamethylene adipamide) and with the copolymer of 2 methyl pentamethylenediamine, and b) polycaprolactam, and elastomer polymer is a polyetheramides.

5. the fiber of claim 1, wherein non-elastomer polymer is selected from poly-(ethylene glycol terephthalate) and copolymer thereof, poly-(terephthalic acid (TPA) 1, the ammediol ester) and poly-(terephthalic acid (TPA) 1, the 4-butanediol ester), and elastomer polymer is selected from the product of following raw materials according: poly-(tetramethylene ether) glycol or poly-(tetramethylene-copolymerization-2-methyl tetramethylene ether) glycol and terephthalic acid (TPA) or dimethyl terephthalate (DMT), and be selected from 1, ammediol and 1, the glycol of 4-propylene glycol.

6. the fiber of claim 1, its SMIS comprise, at its outer surface, and the non-elastomer polymer cortex between the wing and core contact point.

7. the fiber of claim 1 also comprises the additive in the non-elastomer polymer that joins the wing, is used to improve the adhesion of the wing and core, and wherein the grade of peeling off of this fiber is lower than about 2.5.

8. the fiber of claim 7, wherein non-elastomer polymer be selected from a) poly-(hexamethylene adipamide) and with the copolymer and the b of 2 methyl pentamethylenediamine) polycaprolactam, and elastomer polymer is a polyether ester amides.

9. synthetic polymeric fibers that can stretch, it has the after-contraction of boiling at least about 35%, and require just can be stretching substantially with fiber less than about 10% elongation.

10. synthetic polymeric fibers that can stretch, it comprises: contain the axial core of elastomer polymer and a plurality of attached to the wing on the core, that contain non-elastomer polymer, its SMIS comprises, at its outer surface, and the non-elastomer polymer cortex between the wing and core contact point.

11. the synthetic polymeric fibers that can stretch, it comprises: contain the axial core of elastomer polymer and a plurality of attached to the wing on the core, that contain non-elastomer polymer, its SMIS has circle or regular polygon section basically.

12. the synthetic polymeric fibers that can stretch, it comprises: contain the axial core of elastomer polymer and a plurality of attached to the wing on the core, that contain non-elastomer polymer, wherein at least one wing has the shape of T, C or S.

13. clothes that comprise claim 1,9,10,11 or 12 fiber.

14. a melt spinning method that spins the continuous polymerization fibres comprises:

The melt that allows the melt that comprises at least a thermoplasticity non-elastomer polymer and comprise thermoplastic elastomer polymer passes spinning plate and is configured as the many synthetic polymeric fibers that can stretch, this fiber has basic radial symmetric section and comprises, contain elastomer polymer axial core and a plurality of attached on the core, contain the wing of non-elastomer polymer; After fiber comes out from spinneret orifice it is implemented quenching so that fiber is collected in the fiber cooling then.

15. the method for claim 14 comprises, the additional step after the quenching: make fiber heat lax so that it shows that boiling the back at least about 20% extends.

16. the method for claim 15, wherein heat relaxes and implements under following condition: with dry air, hot water or superatmospheric pressure press water steam as heat medium; Temperature: when heat medium is described dry air about 80 ℃～about 120 ℃ of scopes, when heat medium is described hot water at about 75 ℃～about 100 ℃, or when heat medium when being described superatmospheric pressure press water steam at about 101 ℃～about 115 ℃.

17. the method for claim 14 comprises, fiber is carried out the additional step of drawing-off after quenching, boils the back elongation so that it shows at least about 20%.

18. the method for claim 14 comprises, and is lax at quenching relief fiber, is benchmark in fibre length before lax, about 1～35% additional step.