CN1181790A - Heat-bondable conjugated fiber and high-modulus fiber globoid made thereof - Google Patents
Heat-bondable conjugated fiber and high-modulus fiber globoid made thereof Download PDFInfo
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- CN1181790A CN1181790A CN95197829A CN95197829A CN1181790A CN 1181790 A CN1181790 A CN 1181790A CN 95197829 A CN95197829 A CN 95197829A CN 95197829 A CN95197829 A CN 95197829A CN 1181790 A CN1181790 A CN 1181790A
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Abstract
A high-modulus heat-bondable conjugated fiber capable of forming a fiber structure having excellent recovery endurance against compression and high air permeability can be provided by using a thermoplastic elastomer component and a highly crystalline non-modulus polyester component having a melting point higher than that of the elastomer component as the constitunents, arranging the elastomer component in such a way that it is present in the crescent form in the circular cross section of the conjugated fiber, and specifying the geometrical dimensions of the cross section (e.e, the state of distribution in the cross section of the two components constituting the conjugated fiber).
Description
Technical field
The present invention relates to the thermal bondable composite fibre, in more detail, relate in particular to and to reduce the mutual pinning phenomenon of fiber in later each step of spinning to greatest extent, and can provide the high elasticity thermal bondable composite fibre of the fibre structure of excellent resilience, compression reaction durability and highly breathable.
Here so-called " pinning phenomenon " means that fiber schemes molten sticking, bonding, bonding etc. and the phenomenon of physics and combination chemistry takes place each other.This " pinning phenomenon " causes to melt and glues, presses and glue, can be to the manufacturing and the processing generation harmful effect of this fiber.
Background technology
Composite fibre as crystalline thermoplastic elastomer and crystalline thermoplastic polyester composition discloses the block polyester polyethers becomes parallel type or eccentric core-sheath-type, can suitably be used to make coat or underwear with the inelastic polyester composite spinning that with the polybutylene terephthalate (PBT) is main component high crimpiness composite fibre in the special public clear 60-1404 communique.
The inelastic polyester composite spinning that discloses polyester ethers elastomer and polyethylene terephthalate in the Te Kaiping 3-185116 communique and be main body becomes parallel type or core-sheath-type, high crimpiness and is easy to the combing opener, the Thermoadhesive conjugate fiber of the supatex fabric of retractility is arranged applicable to manufacturing.
Proposed in the Te Kaiping 3-220316 communique with the polyesters elastomer be the sheath composition, be the core composition with the inelastic polyester, improved combing characteristic and spinning characteristic, can be used for making staple fibre yarn and thermal viscosity supatex fabric, the Thermoadhesive conjugate fiber of core-sheath-type in fact with one heart.
In addition, about the Thermoadhesive conjugate fiber that on fiber surface, disposed thermoplastic and high-elastic and the fibre structure that can obtain with it, also be disclosed in the following patent: No. 91/19032 communique of the International Application No. WO of under PCT, announcing, Te Kaiping 4-240219 communique, No. 4316629 communiques of Te Kaiping, Te Kaiping 5-98516 communique, Te Kaiping 5-163654 communique, Te Kaiping 5-177065 communique, Te Kaiping 5-261184 communique, Te Kaiping 5-302255 communique, Te Kaiping 5-321033 communique, Te Kaiping 5-337258 communique, Te Kaiping 6-272111 communique, Te Kaiping 6-306708 communique etc.
The cross section of disclosed various Thermoadhesive conjugate fibers on the above-mentioned prior art, as shown in the 2nd figure (a)～(c), be said parallel type on the literal, eccentric core-sheath-type, in this case, be compound in 20/80～80/20 scope with the area ratio of inelastic polyester with thermoplastic and high-elastic.
Yet, in the composite fibre of elastomer, because the such character of elastomer in the spinning step composite fibre above-mentioned pinning phenomenon each other can take place inevitably later on, and cause variety of issue after this as a kind of composition.
In this sense, above-mentioned any prior art does not all have about how obtaining the description of the composite fibre that bonding force, elasticity and curling ability make moderate progress when overcoming fiber pinning phenomenon each other, and does not have to propose understanding as to this.Only open in the flat 5-302255 communique the spy, no matter have or not above-mentioned cognition, still proposed when and when obtaining long fiber to form that different polyesters elastomer composite spinnings of the same race becomes core-sheath-type, with the big but elastic characteristic excellence of cohesiveness, elastomer that polyether components is many is the core composition, and so that cohesiveness is little but the elastomer that elastic characteristic is poor, polyether components is few is the sheath composition carries out composite spinning.Yet such composite fibre can't reach the bonding effect that prevents of realistic scale, and the purposes that is noted that this composite fibre is the non-woven fabric material that can be used for mud compress material, lining, backing material, elastic cord etc.
And then, if to the combination property that heat-bondable conjugated fiber is arranged earlier shown in the 2nd figure (a)～(c) is that interfacial adhesion intensity between antiseized ability, elastomer/polyester polymers and original heat bonding performance and curling elasticity are investigated, result as shown in table 1 is arranged then.
Table 1
| Composite fibre (a) | Composite fibre (b) | Composite fibre (c) | ||
| Fiber is made performance | (1) the sub-tow tube is accommodated characteristic during spinning | Very | Bad | Bad |
| Fracture of wire when (2) stretching | Little | Many | Many | |
| (3) stuffer box crimping machine discharging performance | Very | Bad | Bad | |
| The composite fibre characteristic | (4) the bonding ability of preventing during spinning | Greatly | Little | Little |
| (5) bonding strength between elastomer/polyester (polymer interface) | Little (greatly) * | Greatly | Greatly | |
| (6) hot sticky make a concerted effort (no bonding situation) between fiber **Bonding situation is arranged | (little) **Little | (greatly) **Little | (greatly) **Little |
| Composite fibre (a) | Composite fibre (b) | Composite fibre (c) | ||
| (7) curling elastic modelling quantity | Little | Greatly | Greatly | |
| (8) the three-dimensional ability of curling | Greatly | Do not have | Greatly | |
| The opener cardability | (9) the opener step is opened fibre | Bad | Bad | Bad |
| (10) the combing tube twines | Bad | Bad | Bad | |
| (11) combing filigree | Bad | Bad | Bad | |
| (12) combing cotton knot | Bad | Bad | Bad | |
| The fibre structure characteristic | (13) resilience after the heat treatment | Little (because bonding force is little) | Little (although bonding force increases because bondability is big, thereby the sharp characteristic that bonds can not be brought into play) | Little (although bonding force increases, but because bondability is big, thereby the sharp characteristic that bonds can not be brought into play) |
| (14) hardness inhomogeneities after the heat treatment | (the fabric inhomogeneities is big, so the hardness inhomogeneities is also big) greatly | (the fabric inhomogeneities is big, so the hardness inhomogeneities is also big) greatly | (the fabric inhomogeneities is big, so the hardness inhomogeneities is also big) greatly | |
| (15) durability after the heat treatment | Little | Little | Little |
The evaluation of table 1 is to be the relative evaluation of benchmark with composite fibre (b).But in should showing "
*) " the elastomeric situation of expression polyesters, "
*) " the no bonding and situation of supposition of expression supposition.
Can see as result from this table, composite fibre (c) requires characteristic (corresponding to 4 in the table)～8 5 of composite fibre)) in 4 key elements are arranged is excellent, yet a glance is desirable fiber as can be seen just, the bonding ability of preventing " little " of this fiber, that is to say " poor ", thereby the quality of industrial manufacturing process or resultant goods is caused fatal adverse effect.
Promptly, composite fibre at first be captured on the winch spool with the precursor form that do not stretch or the precursor bundled tube in, but fully cooling, thus monofilament take place during boundling each other by elastomer cause bonding, but, even be in the state that is wrapped in keeping on the winch spool, each other bonding of fiber also still carried out, and forms hard strand, or sub-tow good bond each other, and can't get off from unwinding on the winch spool, these all are problems.
In addition, even when capturing in the precursor bundled tube, thereby also have because of the hard bonding remarkable problem that productivity is descended significantly that reduces of the tow tube amount of taking in that makes of strand.Fracture of wire frequently takes place or is wrapped on the draw roll in the bonding sub-tow of such strand tensility extreme difference in stretching step, meeting, thereby can't stably produce.Even supposition can be made thermal bonding fiber, also because its fiber is bonded to each other agglomerating, thereby when mixing fibre structure as supatex fabric etc. with other matrix fiber and use, fiber is bonded to each other and effective bounding point number that form reduces in the time of also can making heat treatment, thereby cohesiveness is significantly reduced and do not have elasticity, fibre structure is easily by outside destroy, thereby the problem that do not have durability such occurs.
On the other hand, in composite fibre (a), its bonding ability of preventing and composite fibre (b) still (c) are compared all and are doubled, and however, still have heat bonding function and curling elasticity as original purpose significantly to worsen such problem.
Disclosure of the Invention
The objective of the invention is to eliminate operability that take place inevitably,, operational characteristic and even the original harmful pinning phenomenon of heat bonding performance when making as a kind of Thermoadhesive conjugate fiber of composition to fiber with crystallizable thermoplastic and high-elastic, and solve interfacial adhesion intensity between polymer, original bond properties and the coexistence of curling elasticity such one still unsolved up to now, with the problem of original form placement.
In addition, another object of the present invention be to provide a kind of can provide be blown into excellent, bulkiness is excellent and soft, elastic modelling quantity is high, the Thermoadhesive conjugate fiber of the cushion pad material of compression reaction excellent in te pins of durability or highly elastic fiber balls (fiber ball).
According to people's such as present inventor research, above-mentioned purpose distinguishes, when being crescent configuration and the geometry yardstick of this moment on the section of elastomer composition at Thermoadhesive conjugate fiber specification shown in following is arranged, can obtain desirable composite fibre.
In other words, in the present invention, the crystallinity inelastic polyester (P) higher than this elastomer (E) by crystalline thermoplastic elastomer (E) and fusing point on the circular fiber section with E: P=20: 80～80: in the composite fibre that the configuration of 20 area ratio forms, this fiber is stipulated its section and surface by following important document (1)～(5):
This elastomer of important document (1) (E) on the fiber section, be configured to by 2 different circular arcs of radius of curvature form crescent, and the big curve (r of radius of curvature
1) constitute the part of outer peripheral lines;
This polyester of important document (2) (P) on the fiber section along forming little that root curve (r of half moon-shaped 2 curve mean curvature radiuses
2) combine with this elastomer, on the other hand, that root curve (r that radius of curvature is big
1) form the part of circular-arc fiber surface, thus in being 25～49% scope, its frequency R becomes outer peripheral lines; Wherein frequency R is defined as at the 1st figure with (r
1) be (L in the circle of radius
3) account for its wholecircle week (L
1+ L
3) ratio, this frequency R can be from [R={ (L
3)/(L
1+ L
3) * 100 (%)] calculate;
This radius of curvature of important document (3) (r
1) and radius of curvature (r
2) ratio (r
1/ r
2) be that radius of curvature compares C
rGreater than 1 less than 2 scope in;
This radius of curvature of important document (4) (r
2) the bend ratio C of curve in 1.1～2.5 scope; Wherein bend ratio C is defined as among the 1st figure with (r
2) be the circular arc (L of radius
2) length with (r
1) be circumference and this circular arc (L of the circle of radius
2) two intersection points between (P
1～P
2Between) the ratio of length (L), this bend ratio C can be from { C=(L
2)/(L) } calculate; With
The thickness of this elastomer of important document (5) (E) and polyester (P) is than in 1.2～3 scope; Wherein thickness is defined as among the 1st figure than D and is passing through with (r
1) be radius circle the center of circle and with (r
2) become the length (L of polyester (P) composition on the rectilinear direction in the center of circle of circle of its part for the circular arc of radius
P) with the length (L of elastomer (E) composition
E) ratio, this thickness can be from { D=(L than D
P)/(L
E) calculate.
The accompanying drawing simple declaration
The 1st figure is the ideograph of the fiber cross sections of expression Thermoadhesive conjugate fiber of the present invention.
The 2nd figure (a) and (b) and (c) be respectively the ideograph of representing to have earlier the fiber cross sections of Thermoadhesive conjugate fiber.
The 3rd figure is the ideograph in the vertical section of the expression composite spinning shower nozzle that is used to make Thermoadhesive conjugate fiber of the present invention.
Best example of the present invention
Now, describing in detail with reference to the accompanying drawings above-mentioned is the important document that reaches the present invention's purpose needed (1)～(5).
The 1st figure represents to solve one of the section example (being proper circle) of the Thermoadhesive conjugate fiber of problem of the present invention here.
Among the 1st figure, E represents crystalline thermoplastic and high-elastic, and P represents crystalline inelastic polyester. It is characterized in that, be radius of curvature (r at its section1) circle in, the E composition is configured to by (r1)、(r
2) crescent-shaped that forms of two circular arcs that like this radius of curvature is different, its outer peripheral line (L1) be radius of curvature (r1) circular arc, consist of the part of its original fiber section, on the other hand, the P composition on the fiber section along little that curve (r of 2 curve mean curvature radiuses that forms crescent-shaped2) be combined with this elastomer. Therefore, the P composition also forms outer peripheral line (L3) shown in the part of fiber surface, but this moment (L3) fiber section frequency R (R=(L3)/{(L
1)+(L
3) * 100 (%)) must be in 25～49%, more fortunately 28～40% scope. If this R is lower than 25%, when then making composite fibre fiber each other easily fusible or pressure viscosity and occur bonding, thereby become easily trouble on the manufacturing process. In addition, because the E composition is soft, can stings into or hang on the rotary fiber regenerating device steel wire that uses in fiber opener or the mixed cotton etc., cause the carding property deterioration and make long-time manufacturing difficult, or be difficult to be mixed uniformly fibrous lofted. And, because stick portion (L1) increase, also can increase with the thermal bond points of fiber on every side, thereby form fine network structure, be difficult to demonstrate elasticity. On the other hand, if this R surpasses 49%, then hot melt sticks into minute area of covering and has reduced with regard to adhesive function on the fiber surface, is difficult to cause desirable bonding.
On such section, radius of curvature (r1) and (r2) ratio { (r1)/(r
2) be that radius of curvature compares CrMust be greater than 1.
As this CrValue is 1 when following, and the joint line of E composition and P composition is that peel off easily at both interfaces, and if in case peel off, interfibrillar bonding force will significantly descend, or the conjugate ability descends, curling performance degree diminishes, thereby bad. In addition, the elastic modelling quantity of composite fibre is reduced, and the opener of generation opener step is bad, frequently twine the combing cylinder, the troubles such as carding fiber net is inhomogeneous, formation fiber knot occur, so bad.
On the other hand, if this CrValue surpasses 2, and then the E composition is too large to the occupied area of fiber section, thereby bad.
Secondly, under above-mentioned complex morphological, about the flexibility C of the joint line of E composition and P composition, i.e. girth (L among the 1st figure2) with point of contact, (P1) and point, (P2) the ratio { C=(L of line segment (L)2)/(L) }, must be in 11～25, more fortunately 1.2～2.0 scope.
If this C value is lower than 1.1, then peeling off easily each other such as the such polymer that has first under the complex morphological of the 2nd figure (a), curling development degree is little, or curling development degree reduces during heat treatment, thereby is difficult to form the flexible thermal bond points that has been involved in non-resilient crimped staple. On the other hand, if this C value surpasses 2.5, curling also the generation extremely easily during then curling undue increase, or heat treatment and the bulkiness of fibre structure is reduced, or in feel " rumble, rumble " such sensation is arranged, thereby bad. Here " rumble, rumble " sensation means when contact fibre structure surperficial can produce as exist so not the feeling soon of little and hard foreign matter in its structure.
At last, the Thickness Ratio (D) of E composition and P composition is stipulated it also is extremely important. This D ought be long as (L take the maximum ga(u)ge of E composition among the 1st figureE), the maximum ga(u)ge of P composition is long is (LP) time, with { D=(LP)/(L
E) expression, this value must be in 1.2～3.0, more fortunately 1.5～2.9 scope. If this D is lower than 1.2, curling development degree reduces during then curling development degree minimizing, or heat treatment, be difficult to equally change into fibre structure, and be difficult to when being involved in non-resilient crimped staple, cause fusible, thereby bad. And if this D surpasses 3.0, then curlingly increase too, curling also the generation extremely easily during heat treatment and bulkiness etc. is reduced, or produce the sensation of " rumble, rumble " in feel, thereby bad.
The fusing point like the E composition is high 10～190 ℃ for the fusing point of P composition among the present invention.Therefore, during the heat bonding of this composite fibre, handle and only make E composition heat fusing by the temperature that is lower than the fusing point of P composition at the fusing point that is higher than the E composition, can make the P composition keep original fibre morphology, keep each other bounding point of fiber, high-level keep bonding strength, improve elastic modelling quantity and durability.
The P composition here, so long as polyester just is not particularly limited, but normally polyethylene terephthalate, polybutylene terephthalate (PBT), poly-terephthaldehyde's ester-1,6-hexylene glycol ester, poly terephthalic acid-1, the 4-butanediol ester, poly terephthalic acid-1, the polymer that 4-dimethyl cyclohexane ester, poly-pivalolactone or these copolyesters are formed, but, therefore be preferably the polybutylene terephthalate (PBT) that stays stress hardly owing to will use applying under the situation of repetitive strain.Especially when the elastomeric hard segment that in the molten component of composite fibre, use be the polybutene time-like, do not exist and specific question such as peel off, thereby be good.The fusing point of this P composition is more fortunately in 110～290 ℃ the scope.
What in contrast, the fusing point of E composition was suitable is 100～220 ℃.When being lower than 100 ℃, even spinning is carried out to such an extent that can satisfy the important document of above-mentioned (1) of the present invention～(5), the fiber in the time of also can't preventing spinning fully is bonded to each other.In addition, when this composite fibre be bundled into big bag multilayer be deposited in such as the warehouse of decumbent corydalis tuber register in the time, have bonding sorrow mutually take place between the fiber.If surpass 220 ℃, then be in the maximum ability of heat-treating machine stabilized treatment temperature, it is inhomogeneous that the part bonding strength can take place, thereby become the uneven reason of hardness, thereby also bad.Aspects such as, heat treatment stability bonding from preventing, it is better scope that the fusing point of this composition (E) is 130～180 ℃.
This E composition from aspects such as spinning applicability or physical properties, is preferably polyurethanes elastomer or crystallinity polyesters elastomer.
The polyurethanes elastomer, how purely can enumerate by the low melting point of molecular weight about 500～6000, polyether diols for example, the dihydroxy polyester, the dihydroxy Merlon, dihydroxy polyesteramide etc., with the organic diisocyanate of molecular weight below 500, P for example, P '-methyl diphenylene diisocyanate, toluene di-isocyanate(TDI), isophorone diisocyanate, hydrogenated diphenyl methane diisocyanate, Xylene Diisocyanate, 2,6-two isocyanato-methyl caproates, 1, hexamethylene-diisocyanate etc., and the cahin extension agent of molecular weight below 500, glycol for example, amino alcohol or triol, the polymer that reacts and obtain.In these polymer, especially good is that its many alcohol are for gathering-1,4-butanediol or poly--6-caprolactone; Its organic diisocyanate is preferably P, P '-methyl diphenylene diisocyanate; And its cahin extension agent is preferably P, P '-dihydroxy ethoxybenzene and 1,4～butanediol.
On the other hand, crystallinity polyesters elastomer is to be hard segment with the thermoplastic polyester, with poly-(alkylene oxide) glycol is the polyetherester block copolymer that the soft chain segment copolymerization forms, more particularly, it better is a kind of terpolymer, its composition is respectively from terephthalic acid (TPA), M-phthalic acid, phthalic acid, naphthalene-2, the 6-dioctyl phthalate, naphthalene-2, the 7-dioctyl phthalate, biphenyl-4, the 4-dioctyl phthalate, hexichol oxidative ethane dioctyl phthalate, fragrant grass family carboxylic acids such as 3-sulfoisophthalic acid sodium, 1, alicyclic dicarboxylic acids such as 4-cyclohexane cyclohexanedimethanodibasic, butanedioic acid, oxalic acid, adipic acid, decanedioic acid, tetracosandioic acid, at least a dicarboxylic acids of selecting in the one-tenth ester derivant of aliphatic dicarboxylic acid such as dimeric dibasic acid or these acid etc., from 1, the 4-butanediol, diethylene glycol (DEG), 1, ammediol, 1,4 butanediols, 1,5 pentanediols, 1, the 6-hexylene glycol, neopentyl glycol, 1, aliphatic diols or 1 such as 10-decanediol, the 1-cyclohexanedimethanol, 1, the 4-cyclohexanedimethanol, at least a diol component of selecting in the one-tenth ester derivant of alicyclic diol such as tristane dimethanol or these alcohol etc., polyethylene glycol with mean molecule quantity about 300～5000, poly-(1, the 2-expoxy propane) glycol, poly-(1, the 3-expoxy propane) glycol, poly-(1,4 epoxy butanes) glycol, the copolymer of oxirane and expoxy propane, at least a in poly-(alkylene oxide) glycol such as the copolymer of oxirane and oxolane.
Yet, from the cohesiveness or the physical property aspects such as heat-resistant quality, intensity of polyesters composite parts, to be preferably with the polybutylene terephthalate (PBT) be hard segment, with polyoxy-1, the 4-butanediol is the polyetherester block copolymer of soft chain segment.In this case, constitute the polyester portion of hard segment, total acid composition with this copolymer is a benchmark, (with the total acid composition is benchmark to its copolymerization ratio, % represents with mole) be terephthalic acid (TPA) consumption 40～100% (mole), M-phthalic acid consumption 0～50% (mole): for fusing point and the raising elastic modelling quantity that obtains being scheduled to, qualities such as durability, better also use phthalic acid, adipic acid, decanedioic acid, azelaic acid, tetracosandioic acid, 2, the 6-naphthalenedicarboxylic acid, 5-sodium sulfonate M-phthalic acid, 1,4-cyclohexane cyclohexanedimethanodibasics etc. especially are more preferably and use the copolymer that contains terephthalic acid (TPA) 50～90% (mole) and M-phthalic acid 10～35% (mole) as the sour composition beyond terephthalic acid (TPA) and the M-phthalic acid.
In addition, the diol component of this polyester portion better is 1, and the 4-butanediol is main composition.And so-called here " being main " means that more than 80% (mole) of total diol composition be 1, and the 4-butanediol can be in the scope below 20% (mole) and other diol component copolymerization.Better available copolymerization diol component can be enumerated ethylene glycol, 1, ammediol, 1,5-pentanediol, 1,6 hexylene glycol, diethylene glycol (DEG), 1,4-cyclohexane diol, 1,4 cyclohexane dimethanol etc.
And then, above-mentioned polyetherester block copolymer better contain 5～80% (weight) mean molecule quantity 300～5000 poly-(alkylene oxide) diol component, especially good be the diol component that contains 30～70% mean molecule quantities 800～4000.When mean molecule quantity is lower than 300, the block decline of resulting block copolymer, elastic recovery can be satisfactory; On the other hand, when surpassing 5000, its poly-property decline of poly-(alkylene oxide) diol component, elastic recovery can be satisfactory, thereby also bad.
When the copolymerization amount of this diol component is lower than 5% (weight),, can not obtain becoming cushion pad the object of the invention, that elastic characteristic is good even this composite fibre heats adhesion process and is configured as cushion pad material etc.; On the other hand, this diol component surpasses at 80% o'clock, and the durability of the mechanical characteristic of resulting block copolymer and heat resistance, light resistance aspect descends, thereby bad.
Better available poly-(alkylene oxide) glycol, be preferably polyethylene glycol, poly-(expoxy propane) glycol, homopolymers such as poly-(1, the 4-epoxy butane) glycol.And then, also can use the repetitive that constitutes above-mentioned homopolymers to carry out random copolymerization or block copolymerization more than 2 kinds and the random copolymer or the block copolymer that generate, the mixed copolymer that can also use above-mentioned homopolymers or copolymer to mix more than 2 kinds.Such polyetherester block copolymer can obtain with well-known polyester copolymerization preparation method.
When composite fibre of the present invention prepared, E composition and P composition normally were dried to moisture content respectively below 0.1%, supply with spinning then.
Crystalline thermoplastic elastomer and inelastic polyester are compound and make the method for fiber, can carry out with well-known device for spinning and method.
If illustrate, then use all such as shown in the figure 3 composite spinning plates just can obtain composite fibre of the present invention with reference to accompanying drawing.And about the composite spinning plate of the 3rd figure, be that the P composition is molten condition and flows out from the pin hole 3 that is arranged at upper plate 1, and that the E composition is molten condition is mobile between upper plate 1 and lower plate 2, by the compound spray silk of the nozzle that is arranged at lower plate 2.During spinning, polymer sprays a composite fibre strand that the back cooling curing forms uses spinning oil, and traction or stretching make it to extend 2～5 times then, can also draw again.
Here,, why can be formed with the reason of this composite fibre of fiber section shown in the 1st figure, can illustrate with the P composition is different with the fusing point of E composition by using the spinning plate shown in this 3rd figure.
That is, both fusing point difference is directly connected to melt viscosity, therefore, under uniform temp, P composition one side's viscosity height (promptly hard), and E composition one side's melt viscosity low (promptly soft).
In other words, the P composition of the molten condition that flows out from pin hole 3 is subjected to the spray silk pressure influence of the E composition of molten condition hardly, still flow on vertical direction in its original mode, and the E composition around promoting is until contact with lower plate 2.And then, finally, form fiber section as shown in the figure 1 from nozzle 4 ejections along lower plate 2 downslides.
Immediately the strand before the boundling or in the boundling is used amorphous polyester as spinning oil each other at monofilament after the spinning.The polyethers block copolymer, this prevents that as a kind of bonding means from having significant effect.
Simultaneously, although fiber is still soft and but cardability is poor significantly when forming fibre structure in the extensibility that improves composite fibre with by combing, but by being that benchmark is used the amorphous polyether ester based block copolymer in 0.02～5% (weight) scope with the fibre weight, improved the flatness of fiber, and the wettability of molten polymer has increased bonding strength owing to also having improved heat bonding, and the elastic modelling quantity and the durability of fibre structure have been increased substantially.
This amorphous polyetherester block copolymer is the amount of application of benchmark when being lower than 0.02% (weight) with the fibre weight, prevents that for reaching effect bonding, that improve cardability and improve bonding force from being not enough.On the other hand, if this amount of application surpasses 5% (weight), even the adhesion amount of then this amorphous polyester polyester block copolymer increases, can not reach and further prevent bonding, as to improve cardability, raising heat bonding intensity etc. effect, can increase on the contrary fiber surface adherence, take place that the uniform fiber structure is twined, can not be obtained in adhesion on the carding machine, to produce hardness inhomogeneous etc., thereby bad.
This amorphous polyether ester based block copolymer is the polyetherester block copolymer of terephthalic acid (TPA) and/or M-phthalic acid and/or a sodium sulfonate M-phthalic acid or these sour lower alkyl esters, low-grade alkylidene glycol and poly alkylene glycol and/or polyalkylene glycol mono ether composition.
For example, can enumerate terephthalic acid (TPA)-aklylene glycol-poly alkylene glycol, terephthalic acid (TPA)-M-phthalic acid-aklylene glycol-poly alkylene glycol, terephthalic acid (TPA) aklylene glycol-polyalkylene glycol mono ether, terephthalic acid (TPA)-M-phthalic acid-poly alkylene glycol-polyalkylene glycol mono ether, terephthalic acid (TPA)-sodium sulfonate M-phthalic acid-aklylene glycol poly alkylene glycol, terephthalic acid (TPA)-M-phthalic acid-sodium sulfonate M-phthalic acid-aklylene glycol-poly alkylene glycol etc., the ratio of terephthalate units and M-phthalic acid ester units and/or a sodium sulfonate M-phthalic acid ester units are 100: 0～50: 50 (mol ratio) because being stained with can prevent the spinning boundling time is sticking better.In order further to improve the antiseized ability of the composite fibre of having used this block copolymer, the ratio of especially good is terephthalate units and a M-phthalic acid ester units and/or a sodium sulfonate M-phthalic acid ester units is 90: 10～50: 50 (mol ratio).
In addition, the ratio normally 2: 1～1: 51 (mol ratio) of terephthalate units and M-phthalic acid ester units and/or a sodium sulfonate M-phthalic acid ester units and polyalkylene glycol mono unit in this block copolymer, and if consider that monofilament is stained with bonding strength sticking and the raising fiber each other when preventing the spinning boundling, then especially good is 3: 1～8: 1 (mol ratio).
Here, the aklylene glycol that is used for this amorphous blocks copolymer is ethylene glycol, propylene glycol, 1, the 4-butanediol, 1, the aklylene glycol of 2～10 carbon such as 10-decanediol, poly alkylene glycol is mean molecule quantity 600-12 normally, 000, better is mean molecule quantity 1,000～5,000 polyethylene glycol, poly-diethanol polypropylene glycol copolymer, polyethylene glycol poly--1,4-butanediol copolymer, polypropylene glycol etc. in addition, also have the monomethyl ether of polyethylene glycol, polypropylene glycol etc., single ether, monophenyl ether etc. preferably.Yet, prevent the performance this point that monofilament is bonded to each other from raising, especially good is the monoether class of polyethylene glycol.
In addition, the mean molecule quantity of this amorphous blocks copolymer also depends on the molecular weight of employed poly alkylene glycol, but is 3,000～13 normally 2,000～20,000, better, 000.Mean molecule quantity not sufficient 2,000 o'clock, with regard to improve percentage elongation, prevent to be stained with sticking, prevent that the hot sticky speech of making a concerted effort from being inadequate, and if surpass 20,000 percentage elongation and the hot sticky decline of making a concerted effort, thereby bad.The poly alkylene glycol that is used for regulating molecular weight during this block copolymer condensation is preferably monomethyl ether, single ether, monophenyl ether some end-blocked glycol like this.
And this amorphous blocks copolymer is the alkali metal salt of alkali metal salt, polyoxyethylene alkyl phenyl ether sulfuric ester with the polyoxyethylene alkyl phenyl ether phosphate and/or surfactant-dispersed such as these ammonium salt, alkanol amine salt.It better is 30～100 ℃ that the flocculation of amorphous blocks copolymer dispersion begins temperature, be more preferably 60～90 ℃.And the use amount of this amorphous blocks copolymer is a benchmark with composite fibre weight, better be 0.02～5.0% (weight), especially good be 0.1～3.0% (weight).
Thermoadhesive conjugate fiber of the present invention is preferably fiber number in the scope at 0.5～200 dawn.Less than is during 0.5 dawn, and be treated as under the situation of fibre structure bonding strength in its heat bonding not enough, can not obtain sufficient elasticity modulus and durability; And if surpassed for 200 dawn, then strand cooling such as fiber is insufficient, even the contoured such just like the present invention also is difficult to prevent that monofilament is bonded to each other.
The consequently bond properties decline of fiber, elastic modelling quantity or durability reduce.Especially good is in the scope at 2～100 dawn.Composite fibre of the present invention carries out machine crimp with stuffer box crimper sometimes and makes it to produce curling after stretching, but better be curling number in 5～25/inch, the scope of crimpness 5～30%.5/inch of the number deficiency of curling, crimpness deficiency, carding fiber net can rupture during combing, and perhaps the bulkiness of resultant fibre structure significantly descends, thereby bad.Curling outnumbers 25/inch, crimpness and surpasses at 30% o'clock, and the trafficability characteristic of carding machine worsens, and occur filigree easily and form the fiber knot, thereby also bad.Specifically, especially good is to curl 8～20/inch of numbers, crimpness in 6～18% scope.In addition, this moment, the staple fiber ppd of staple fibre better was in the scope of 10～100mm, and especially good is in the scope of 15～95mm.
Above-described Thermoadhesive conjugate fiber, no matter being long fiber still is the shape of staple fibre, even itself independent use also can be thermoformed into nonwoven sheet etc., but best is dispersion in the fiber assembly that is matrix with inelastic polyester class crimped staple, sneaks into this composite fibre of crimped staple form, and be thermoformed into desirable shape.This form typically is disclosed in this paper and starts in No. 91/19032 communique of WO of mentioning.
Become the inelastic polyester class crimped staple of matrix, so long as its wrapped configuration has the inelastic polyester class crimped staple that helical form or omega shaped or a part have these shapes, any can.In addition, inelastic polyester class crimped staple, it is common polyethylene terephthalate, polybutylene terephthalate (PBT), poly terephthalic acid-1,6-hexylene glycol ester, poly terephthalic acid-1, the 4-butanediol ester, poly terephthalic acid-1,4-dimethyl cyclohexane ester, the mixture of poly-neopentanoic acid lactone or the formed crimped staple of these copolyesters and even these crimped staples has changed the right or copolymer composition of polymer poly more than 2 kinds in the perhaps above-mentioned polymer, about asymmetricly constitute the bilateral fibre section, produced spiral-shaped curling composite short fiber etc.Certainly, curling in order to produce, be preferably by make the strong cooling of fiber one side when the spinning each to incorgruous cooling, and stretching and producing helical form during lax heat treatment or the omega type curls.The section configuration of these staple fibres can be that circular, flat, abnormal shape or hollow etc. are any.
In order to make this crimped staple become the skeleton of fibre structure,, and resilience must can be produced even also should be bulk during this polyesters crimped staple individualism.Bulkiness (JIS L-1097) is preferably at 0.5g/cm separately
2Load be down 35cm
3More than/the g～120cm
3Below/the g, at 10g/cm
2Load be down 15cm
3More than/the g～-60cm
3Below/the g, be more preferably under the described load and be respectively 40cm
3More than/the g～100cm
3Following and the 20cm of/g
3More than/the g～50cm
3Below/the g.If these bulkiness are on the low side, the low such problem of the elastic modelling quantity of then resulting fibre forming cushion pad material or compression resilience will become remarkable.
This crimped staple, its fiber number in the scope at 1～100 dawn, were more preferably for 2～50 dawn more fortunately.If fiber number then can not produce bulkiness less than 1 dawn, and is compressed when bubbling air in liner etc. and is difficult to thoroughly feed equably, the resiliency of resulting cushion pad material or the resilience shortage that just becomes.And if greater than 100 dawn, then fiber is difficult to bending and is difficult to form the fibrous structure thing, and the formation radical of resulting fibrous structure thing and makes the feel hardening very little.In addition, the long scope of 10～100mm more fortunately of its segment, especially good is in the scope of 15～95mm.
Thermoadhesive conjugate fiber of the present invention can be used for obtaining highly elastic fiber balls.In this case, Thermoadhesive conjugate fiber of the present invention and the composite rate that becomes the inelastic polyester class crimped staple of matrix are in weight ratio (%), 5～49: 95～5 scope more fortunately.The composite rate Ruo Taigao of this Thermoadhesive conjugate fiber, then formed thermal bond points number is too many in this fiber balls, makes fiber balls become too hard, and it is problematic making the cushion pad material.Otherwise if the composite rate of this composite fibre is too low, and then the thermal bond points number that forms in this fiber balls makes the morphological stability of this fiber balls very poor very little.
In addition, more handy a kind of lubricant is handled and is handled with a kind of processing agent that is easy to slide on the surface of above-mentioned inelastic polyester class crimped staple.Be easy to slide because the surface becomes, also just become with formation fiber balls such as air turbulences and carry out easily.And resulting fiber balls soft also obtains the feel as the touch feather easily.These finishing agents, so long as carry out drying or the material of cure process after using this medicament with regard to making it easily to become sliding, any can, for example, can coat with the segment fluidized polymer of polyethylene terephthalate and poly(ethylene oxide) and reduce skin-friction force.And then, any one stage use as the siloxane resin lubricant, be the finishing agent of main component with silicone resins such as dimethyl polysiloxane, epoxy-modified polysiloxane, amino modified polysiloxane, methylhydrogenpolysi,oxane, methoxyl group polysiloxanes, consider it also is preferably from increasing substantially the lubricity aspect.The adhesion amount of this lubricant is that 0.1～0.3% (weight) is normally suitable.Certainly, in silicone resin, add antistatic additive or handle back enforcement antistatic agent treatment at silicone resin, the static that high temperature air turbulent flow processing owing in most of the cases needing to prevent to form orbicule because of fiber during with windage or molten sticking processing the etc. produces, thereby can suitably add according to wish.
Such lubricated, in general can hinder the heat bonding of Thermoadhesive conjugate fiber and inelastic polyester class crimped staple, but Thermoadhesive conjugate fiber given to this invention still can both melt sticking with the crimped staple of having used silicone resin with polyethylene terephthalate and the formed polymer overmold staple fibre of poly(ethylene oxide) better, and moderately make inelastic polyester class staple fibre obvolvent curl on the form, thereby might produce considerable bonding strength.Certainly, general Thermoadhesive conjugate fiber seldom has this effect.
The composite rate of inelastic polyester class staple fibre among the present invention is preferably 95～51%, is more preferably 90～55% composite rate.This composite rate Ruo Taigao then because the amount of Thermoadhesive conjugate fiber reduces, cause thermal bond points to reduce, thereby resilience is little, and the morphological stability of resulting fiber balls is bad.
And if this composite rate is too low, then thermal bond points is too many, and it is too hard that fiber balls becomes, and problem is arranged aspect the cushion pad material making.In addition, as described below, when the curling synthetic staple generation of inelastic polyester class is curled, also form thermal bond points, thereby the density of fiber balls is improved, thus also bad.
Among the present invention, also wait as follows under the situation that forms fiber balls at Thermoadhesive conjugate fiber of the present invention and the fusion of inelastic polyester class crimped staple, on this fiber balls surface, better have the fine hair of non-resilient staple fibre or non-resilient staple fibre in a large number.This staple fibre fine hair is given the fiber balls surface with lubricity, and makes the inflation performance of this fiber balls or the feel of this fiber balls inflation back cushion pad become very good.
And, (so-called here deformation is big especially when deformation is big especially, mean that such as the thickness with former stuffing be the deformation that benchmark reaches 50% thickness), also increased initial owing to adjoining the lubricated sense of touch that fiber slides over each other and produces, and the elastic modelling quantity of the thermal bond points that is formed by elastomer and frictional force increases and the sense of touch that produces, thereby makes the good stuffing of feel.
In addition, even repeat aforesaid large deformation, the thermal bond points that is formed by elastomer also can make deformation recovery, thereby can tie up the bullet modulus, also makes durability become good.
Manufacture method about highly elastic fiber balls, at first, in the predetermined mix ratio with inelastic polyester class crimped staple and Thermoadhesive composite short fiber of the present invention fusion, there is the regeneration tightened fully to carry out opener and mixed cotton on the surface with being equipped with carding machine of a plurality of rollers of steel wire etc., make it even, fusion fully obtains bulk blended fiber group.
Then, this blended fiber group is blown in the air blast, carries out the turbulent stir process of the scheduled time, with each root staple fibre separate, opener, and make it to be trapped in and form orbicule in the air-swirl.
At this, inelastic polyester class crimped staple and Thermoadhesive conjugate fiber be mixed cotton equably, and the bulk blended fiber group that complexing forms is in the power that is subjected to air or mechanics, especially the characteristic owing to its composite short fiber is easy to curl, and can form orbicule soon.
In addition, more than the fusing point of the low melting point thermoplastic and high-elastic of this composite fibre, the following temperature of fusing point that constitutes the polymer of this polyesters crimped staple is heat-treated, make and in fiber balls, form thermal bond points, can obtain elastic modelling quantity, the fiber balls of excellent in te pins of durability and feel excellence.
And then above-mentioned crimp percent further improves because of heat-treating also, thereby further plays the effect that forms this orbicule.
So long as can produce this type of effect and be easy to advance the method for fiber ballsization, any method can be used for making high elasticity orbicule of the present invention.And as previously discussed, inelastic polyester class staple fibre surface has lubricity more and is easy to the glider more, is easy to form orbicule more.Certainly, just advance fiber ballsization simultaneously, produce to curl and make the low melting point polymer fusion and cause molten sticking this three's method from this orbicule processing initial stage with hot blast; Perhaps this orbicule initial stage handles at normal temperature earlier, when beginning the spheroidizing core to occur, feed hot blast, make it produce to curl and cause molten stickingly, or after spheroidizing fully, produce and curl and molten method of gluing processing etc., also can adopt if be ready with the hot blast that relaxes.
Especially, the ability that curls into that curls into this composite fibre of energy force rate of inelastic polyester class crimped staple is low, make inelastic polyester class crimped staple appear at the surface of fiber balls, and the form of this inelastic polyester class staple fibre with lubricated surface makes fiber balls integral body present lubricity and is easy to inflation, it is soft and good that the feel of inflation cushion pad also becomes, thereby be preferably.
Embodiment
Below illustrate in greater detail the present invention with embodiment.
Be noted that every numerical value is measured in order to following method among the embodiment.
Inherent viscosity
In the o-chlorphenol solvent,,, its value [η] that is extrapolated to concentration zero is inherent viscosity at 35 ℃ of mensuration [η sp (specific viscosity)/C] with (g/100ml) the formulated solution of sample dissolution of various concentration [C].
Fusing point
Use E.I.Du Pont Company's system 1090 type differential scanning calorimeters,, obtain the fusion peak temperature with 20 ℃ of/minute mensuration of programming rate.Be noted that when this fusion peak temperature can't be measured clearly, can be with micro-fusing point test device (Liu Yuan make made), will about 3g specimen holder between two cover glasses, push down gently with anchor clamps, simultaneously with 20 ℃ of/minute intensifications of programming rate, the thermal change of observation polymer.At this moment, the softening and temperature (softening point) that begins to flow of polymer is just as the fusing point here.
Precursor is taken in performance during spinning in the sub-tow tube
Earlier precursor is accommodated in the sub-tow tube during spinning, is transported to the bobbin cradle step then,, resupply stretching-machine most precursor boundlings.The precursor amount of taking in of comparative example 2 is considered as 100%, and, compares the precursor amount of taking in of other composite fibre as benchmark.
Fracture of wire during stretching
During precursor stretches, suddenly stretching-machine is stopped, investigate the single wire fracture radical of the second tepidarium in-draw tow, the single wire fracture radical of comparative example 2 is considered as 100%, and as benchmark, relatively the fracture radical of other composite fibre.
Filling type crimping machine discharging performance
Tow after the stretching is supplied with filling type crimping machine, after making it to curl, judges the discharge state of tow from stuffer box crimper with visual dripping.Be considered as the natural discharge state in tow no problem ground from stuffer box crimper fabulous; The running that tow is discharged from stuffer box crimper clog-freely has no difficulty but has irregular state to be considered as well slightly when discharging.Tow take place to block and the condition judgement that can't discharge from stuffer box crimper is bad.
The bonding ability of preventing of precursor
Judge the tacky state of precursor after the spinning immediately with visual method.The not bonding fully each other person of fiber, it is very big to look its bonding ability of preventing, and this kind is less bonding but the person of existence is arranged slightly, and it is big to look its bonding ability of preventing; Bondingly firmly become hard metal wire shape person, judge that its bonding ability of preventing is bad.
Interface bonding strength between elastomer/polyester
Extract 50 Thermoadhesive conjugate fibers in the product at random out, under electron microscope, estimate interface stripped shape attitude between the elastomer/polyester of this fiber cross sections with visual method.The fiber number that interface peel takes place 5 with interior person, it is big to be considered as interfacial adhesion intensity; The fiber number that interface peel takes place is 30 above persons, and it is little to be considered as interfacial adhesion intensity.
Hot sticky making a concerted effort between fiber
Thermoadhesive conjugate fiber with obtain with well-established law, 14 dawn of fiber number, the hollow polyethylene terephthalate staple fibre that the long 64mm of fiber, crispation number are 9/inch is 30: 70 ratio fusion with weight ratio, make card sliver, with the heated air circulation type drying machine 200 ℃ of heat treatments after 10 minutes, card sliver is cut into the length of 20mm, the segment two ends are fixed on the cupping machine, the stress when rupturing with 0.2m/ minute velocity determination.Measured value when using the composite fibre of comparative example 2 is considered as 100%, and as benchmark, the numerical value that relatively obtains with the situation of other composite fibre.
Elastic modelling quantity curls
Measure the curling elastic modelling quantity of composite fibre according to JIS L1074, with the measured value of comparative example 2 as 100%, and as benchmark, the value that relatively obtains with the situation of other composite fibre.
Solid curls into ability
Composite fibre opener, combing to form fiber web, are cut into each 10cm of length and width, and the usefulness air drier 140 ℃ of heat treatments of temperature 10 minutes, is measured crispation number according to JIS L1074 under free state.
Opener step opener performance
Composite fibre 100g isolates not opener part during by opener opener step, gravimetry, and the situation of comparative example 2 is considered as 100%, and as benchmark, relatively the not opener part weight of other composite fibre.
The combing roller twines
When composite fibre is handled with carding machine, in steady-state operation, stop to supply with fiber, measure when stopping feed the fibre weight in the time of should from carding machine, discharging to fiber.The measured value of the composite fibre of comparative example 2 is considered as 100%, and as benchmark, the value that relatively obtains with other composite fibre.
Carding fiber net inhomogeneities and fiber knot
Composite fibre is judged the fiber web state of outlet of card by carding machine with visual method.No filigree or fiber knot person are considered as fabulous, and filigree or the few person of fiber knot are considered as well, and many persons are considered as bad.
Resilience after the heat treatment and durability
With the hot sticky fusion fiber web lamination of making when making a concerted effort to measure between above-mentioned fiber, with tabular with the heat-circulation type drying machine 200 ℃ of heat treatments of temperature 10 minutes, make and be adjusted into tabular, density 0.035g/cm
3, thickness 5cm fibre structure, use basal area 20cm
2, the cylindrical rod compression 1cm of flat bottom surface is arranged, measure its stress (pre-stress), as resilience, the measured value during with the composite fibre that uses comparative example 2 is considered as 100%, and as benchmark, the value that relatively obtains with other composite fibre.
This uses 800g/cm after measuring
2Load compressed for 10 seconds, remove weight then and placed for 5 seconds, this operation repeats 360 times, measures compression stress once more after 24 hours.
STRESS VARIATION after the repeated compression and the ratio of pre-stress are considered as the durability of fibre structure, and the value during the composite fibre that uses comparative example 2 is considered as 100%, and as benchmark, the value that relatively obtains with other composite fibre.
Hardness inhomogeneities after the heat treatment
Sensory evaluation is done to the hardness inhomogeneities in the fibre structure surface of making when touching resilience and durability measurement after the above-mentioned heat treatment with hand.No case hardness inhomogeneous (hard spot) person be considered as very, and the hard many persons of spot are considered as bad.
Sour composition and butanediol polymerization that terephthalic acid (TPA) and M-phthalic acid mix with 85/15 (mole %), resulting polybutylene terephthalate (PBT) 45% (weight) further adds thermal response with polytetramethylene glycol (molecular weight 2000) 55% (weight), obtains the polyether polyester elastomer of block copolymerization.The inherent viscosity of this thermoplastic and high-elastic is 1.3,172 ℃ of fusing points.
This thermoplastic and high-elastic and polybutylene terephthalate (PBT), with area than being 50/50 and elastomer being disposed at the mode of the crescent part of the 1st figure, use the composite spinning plate shown in the 3rd figure (hole count is 260 holes), as spinning oil fiber is used 0.05% (weight) with lauryl phosphate sylvite and carry out spinning, make the composite fibre of embodiment 1.As its comparative example, by the fiber section shown in the 2nd figure (a)～(c), in (a), be combined into parallel type, in (b), elastomer be configured to the sheath composition, elastomer be mixed with the sheath composition of eccentric core-sheath-type in (c), with known spinning plate composite spinning, these composite fibres respectively as a comparative example 1,2,3.These not drawing of fiber in temperature is respectively the two-stage tepidarium of 60 ℃ and 90 ℃, be 2.5 times and 1.2 times and stretch with stretching ratio, application of phosphoric acid lauryl sylvite then, after carrying out machine crimp with filling type crimping machine,, cut into 64mm in 60 ℃ of dryings of temperature.
The physical property of resultant fiber is 9 dawn of fiber number, finish adhesive rate 0.2% (weight).The fiber section frequency of the composite fibre of embodiment 1 is 35%, radius of curvature than Cr be 1.2, bend ratio C is 1.73, thickness is 2.1 than D.Fiber manufacturing property, composite fibre characteristic, opener performance, carding property and the fibre structure characteristic of these composite fibres have been summed up in the table 1.
About the fiber manufacturing property, because it is bonding to mostly occur in the comparative example 2 and 3, thereby precursor takes in that performance is bad, fracture of wire is many and poor from the discharging performance of stuffer box crimper when stretching in the sub-tow tube, but these characteristics are good in embodiment 1 and comparative example 1.
Characteristic about composite fibre, the anti-adhesion effects of precursor is little in the comparative example 2 and 3, the more binder fiber that occurs, thereby the extremely thick fiber of formation, when heat-treating with the matrix fiber fusion and to card sliver, the formation radical of this composite fibre is in fact few, makes very low as the heat bonding intensity of fibre structure.On the other hand, in comparative example 1 and embodiment 1, precursor bonding few, this composite fibre is scattered in fiber construct inside more equably, thereby bonding strength improves.If comparative example 1 is compared with embodiment 1, then embodiment 1 demonstrates higher bonding force, and is preferably.
About the curl characteristics of composite fibre, polyester in comparative example 1 (P) composition has semilune by inference and approaches flat section configuration, thereby curling elastic modelling quantity shows low value.This can produce as described below harmful effect to the opener of opener step or cardability.Comparative example 2,3 and embodiment 1 show the almost curling elastic modelling quantity of same level.
In addition, the solid of the composite fibre ability that curls into does not have fully in comparative example 2.Comparative example 1,2 and embodiment 1 be owing to the section anisotropy curls into ability, but in comparative example 3 owing to bondingly cause influence, it is low that solid curls into ability.Yet, in comparative example 1 and embodiment 1,, all have high-caliber solid to curl into ability owing to cut surface character less bonding and that had.About opener and cardability, in comparative example 2 and 3, be difficult to opener owing to binder fiber, the winding on the carding machine roller frequently takes place, and fiber filigree or fiber knot are many, thereby bad.The low fiber that makes of curling elastic modelling quantity owing to composite fibre in the comparative example 1 becomes the pencil form, is difficult on opener, the carding machine roller to twine many, carded fiber filigree or fiber and ties many, thereby bad.
Binder fiber is few among the embodiment 1, and the opener during opener is good, and the carding machine roller twines few, and filigree, fiber knot also lack, thereby be good.
About the fibre structure characteristic, in the comparative example 1,2 and 3 since aforesaid carding fiber net out of order, hot sticky low with joint efforts, resilience is low, the hardness inhomogeneities is also big, thereby is debatable in the practicality.
In embodiment 1, opener, cardability are all good, and the bonding force height during heat treatment can also form simultaneously more solid and curl, thereby resilience, durability are all good, and the hardness inhomogeneities is few, can obtain good fibre structure.
Except that the spinning oil of embodiment 1 and stretching finish from lauryl phosphate sylvite changes over the dispersion liquid of polyester polyethers block copolymer, equally carry out with embodiment 1, obtain composite fibre and carry out various performance evaluations.
Be noted that, at this moment, as the block copolymer use is terephthalic acid/isophthalic acid/ethylene glycol/polyethyleneglycol block copolymer (terephthalate units: M-phthalic acid ester units=70: 30, terephthalate units+M-phthalic acid ester units: polyethylene glycol unit=5: 1, molecular weight polyethylene glycol=2.000, the mean molecule quantity of block copolymer=10,000), use this copolymer and surfactant POE (10 moles) sulfuric acid nonylplenyl ether ester sylvite to prepare with 80: 20 ratio, the aqueous-based dispersions of active ingredient 10%.
The results are shown in Table 2 for it.
Still have a little bonding during the spinning boundling among the embodiment 1, but do not have bondingly in this example fully, obtain better various characteristics.
Therefore, the reason that has further improved anti-adhesion effects by composite fibre being used amorphous polyether ester based block copolymer can be presumed as follows.That is, can infer, be because this block copolymer disperses to become subparticle, between each fiber, plays the effect of roller, thereby reduced interfibrous friction before the strand boundling when spinning or during the boundling.But also can infer because this block copolymer is dispersed into subparticle in water, even thereby composite fibre do not have perceptible pinning phenomenon when under the high temperature that can stretch, heating yet, thereby also help the improvement of draftability.The result lumps together and lists in the table 2.
Remove the ejection ratio of polymer among the change embodiment 1 and the style of spinning plate, outside the preparation thermal bonding fiber that the some fibre section configuration is different as described in the table of table 3, carry out 1 identical operations, and estimate the characteristic of these fibers with embodiment.
Its result, under all situations of embodiment 3～8, precursor is bonding few with regard to the fiber manufacturing property, the opener of supatex fabric step and combing trafficability characteristic are good, interfibrillar bonding force, resilience, the durability of the fibre structure that obtains by hot forming are all good, have obtained the few good fiber structure of hardness inhomogeneities.
Comparative example 4～6
The ejection that remove to change polymer among the embodiment 1 than and the style of spinning plate, to prepare outside the different thermal bonding fiber of as described in the table of table 4 some fibre section configuration, carry out 1 identical operations, and estimate the characteristic of these fibers with embodiment.
Its result, under the situation of comparative example 4～6, precursor is bonding many with regard to the fiber manufacturing property, the opener of supatex fabric step, the combing trafficability characteristic is poor.
And when making fibre structure, fiber bonding force each other is not high when carrying out hot forming and handling, and the resilience of the fibre structure of manufacturing, durability are all insufficient, becomes that hardness is inhomogeneous, problematic fibre structure in the practicality.
Embodiment 9
Adopt used Thermoadhesive conjugate fiber and inelastic polyester class crimped staple among the embodiment 1, weight with fiber balls is benchmark, this composite fibre 30% and this crimped staple 70% fusion are passed through 2 times on the pulley type carding machine afterwards, obtained the fusion fibrous lofted.
This fibrous lofted is dropped in the device of hair-dryer that a useful conduit connects and fiber tank, in hair-dryer, carried out for 30 seconds and stir, obtain the spheroidizing fiber by means of air flow.Then, this spheroidizing fiber is transplanted in the fiber tank, stir this spheroidizing fiber by means of the weak air flow that 195 ℃ of temperature are arranged, make the fusion of flexible thermoplastic elastomer simultaneously, form thermal bond points at the spheroidizing fibrous inside, in this fiber tank, send into air at room temperature then and carry out cooling processing, obtain highly elastic fiber balls.
When this fiber balls is used microscopic examination, on this orbicule surface, observe inelastic polyester class crimped staple with the probability more than 70%.And, when being blown into it in buffering cushion cover cloth with hair-dryer, discovery is blown into operation does not have trouble, all right, resulting cushion pad soft-touch, elasticity are good, 80,000 times compression back hardness conservation rate reaches 55%, far above 35% of the fiber of having used polysiloxanes on the surface, or by using and solidified 32% of cushion pad material that the fiber of the segment fluidized polymer emulsion of polyethylene terephthalate and poly(ethylene oxide) makes on the surface.
In addition, compressive hardness is 2.2kg, is higher than the 0.9kg that uses and solidified the fiber of emulsion on the 0.6kg of the fiber of polysiloxane on the above-mentioned surface or the surface, though and the such flexible touch of 2.2kg is arranged, resilience is high and good.
Comparative example 7
Removing flexible thermoplastic elastomer among the embodiment 9 replaces and uses the dicarboxylic acids composition that forms as benchmark, 60: 40 in molar ratio mixed with the total acid composition from terephthalic acid (TPA) and M-phthalic acid, with ethylene glycol and diethylene glycol (DEG) be low-melting point polyester base polymer (110 ℃ of the fusing points that diol component copolymerization that benchmark, 85: 15 in molar ratio mixed form obtains with the total diol composition, inherent viscosity 0.78) outside, carry out 9 identical operations, obtain fiber balls with embodiment.
When the fiber balls that obtains is investigated, find that the stripping damage situation of thermal bond points is serious here after 80,000 compression tests.In addition, the non-constant of hardness conservation rate of 80,000 compressions only is 15%, and does not have elasticity that feel is extreme difference also.
Table 2
| Embodiment 1 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Embodiment 2 | |||
| The fiber manufacturing property | 1) precursor during spinning is taken in performance 2) wire broken rate 3 when stretching) filling type crimping machine discharges property | ?????％ ?????％ ??????- | 200 55 is good | 210 53 is good | 100 100 is bad | 105 98 is bad | 250 3 is extremely good |
| Composite fibre | 4) the antiseized ability 5 of precursor) the interfacial adhesion intensity 6 between elastomer/polyester) hot stickyly between fiber make a concerted effort 7) elastic modelling quantity 8 curls) solid curls into ability | -% %/inch | Greatly 210 98 32 | Greatly 160 62 37 | Little big by 100 100 0 | Little big by 105 96 12 | Greatly big by 270 98 43 |
| The opener cardability | 9) opener step opener 10) the carding machine roller twines 11) carding fiber net inhomogeneities 12) carded fiber network fiber knot | ??????％ ??????％ ???? ??????- | 51 50 is good | 86 84 is bad | 100 100 is bad | 97 99 is bad | 00 is extremely well extremely good |
| Fibre structure | 13) resilience 14 after the heat treatment) hardness inhomogeneities 15 after the heat treatment) durability after the heat treatment | 82 is little by 120 | 49 is little by 106 | 100 is big by 100 | 93 is big by 105 | 110 is minimum by 130 | |
Table .3
| Each parameter of fiber section | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | Embodiment 8 |
| Area is than (P: E) (%) | ???50∶50 | ???50∶50 | ???25∶75 | ???75∶25 | ???60∶40 | ???30∶70 | ???40∶60 | ???35∶65 |
| Frequency (%) | ?????35 | ?????35 | ?????47 | ?????27 | ?????30 | ????45 | ?????38 | ?????42 |
| Cr (r1/r2) ratio | ?????1.3 | ????1.25 | ?????1.1 | ????1.9 | ?????1.5 | ????1.2 | ?????1.25 | ????1.23 |
| C (12/1) ratio | ?????1.73 | ????1.73 | ?????2.3 | ????1.2 | ?????1.5 | ????2.1 | ?????2.2 | ????2.15 |
| The thickness ratio | ?????2.1 | ????2.1 | ?????2.9 | ????1.2 | ?????1.8 | ????2.7 | ?????2.5 | ????2.6 |
Table .4
| Each parameter of fiber section | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 | Comparative example 6 |
| Area is than (P: E) (%) | ????50∶50 | ????50∶50 | ??????50∶50 | ?????30∶70 | ????????40∶60 | ?????35∶65 |
| Frequency (%) | 50 parallel types | 0 core-sheath-type | 5 core shift core-sheath-types | ???????45 | ??????????38 | ???????42 |
| Cr (r1/r2) ratio | ??????- | ?????1.4 | ???????1.4 | ???????1.2 | ?????????1.25 | ??????1.23 |
| C (12/1) ratio | ??????1 | ??????- | ????????- | ???????2.1 | ?????????2.2 | ??????2.15 |
| The thickness ratio | ??????1 | ?????4.8 | ???????2.4 | ???????2.7 | ?????????2.5 | ??????2.6 |
The possibility of utilizing on the industry
Although Thermoadhesive conjugate fiber of the present invention with crystalline E composition as a kind of composition, but realized eliminating the pinning phenomenon that has occured inevitably when this composite fibre is made, operability, the operational characteristic of fiber had obstruction even its original cohesive also had obstruction, also have both simultaneously the interfacial adhesion intensity between polymer, original bond properties and curling elasticity, can be suitable for the raw fibre as various padded coamings such as furniture, bed, bat, bedding, seat cushion pad, bed clothes stuffing, hygienic material, supatex fabric, dress material usefulness fabric, carpet, the vehicle interior finish material etc. such as medical.
In addition, with the fiber balls of Thermoadhesive conjugate fiber of the present invention as binding agent, owing to be blown into excellent performance, resulting padded coaming or padding bulkiness are excellent, elasticity is high, soft, the compression excellent in te pins of durability, can be suitable for the choke material as padded coaming or pillow etc.
Claims (17)
1. Thermoadhesive conjugate fiber, it is characterized in that, in crystalline thermoplastic elastomer (E) and the fusing point crystallinity inelastic polyester (P) higher than this elastomer (E) with E: P=20 on the circular fiber section: in the composite fibre that 80～80: 20 area ratio configuration forms, the regulation of following important document (1)～(5) is satisfied on the section of this fiber and surface:
This elastomer of important document (1) (E) on the fiber section, be configured to by 2 different circular arcs of radius of curvature form crescent, and the big curve (r of radius of curvature
1) constitute the part of outer peripheral lines;
This polyester of important document (2) (P) on the fiber section along forming little that root curve (r of half moon-shaped 2 curve mean curvature radiuses
2) combine with this elastomer, on the other hand, that root curve (r that radius of curvature is big
1) form the part of circular-arc fiber surface, thus in being 25～49% scope, its frequency R becomes outer peripheral lines; Wherein frequency R is defined as at the 1st figure with (r
1) be (L in the circle of radius
3) account for its wholecircle week (L
1+ L
3) ratio, this frequency R can be from [R={ (L
3)/(L
1+ L
3) * 100 (%)] calculate;
This radius of curvature of important document (3) (r
1) and radius of curvature (r
2) ratio (r
1/ r
2) be that radius of curvature compares C
rGreater than 1 less than 2 scope in;
This radius of curvature of important document (4) (r
2) the bend ratio C of curve in 1.1～2.5 scope; Wherein bend ratio C is defined as among the 1st figure with (r
2) be the circular arc (L of radius
2) length with (r
1) be circumference and this circular arc (L of the circle of radius
2) two intersection points between (P
1～P
2Between) the ratio of length (L), this bend ratio C can be from { C=(L
2)/(L) } calculate; With
The thickness of this elastomer of important document (5) (E) and polyester (P) is than in 1.2～3 scope; Wherein thickness is defined as among the 1st figure than D and is passing through with (r
1) be radius circle the center of circle and with (r
2) become the length (L of polyester (P) composition on the rectilinear direction in the center of circle of circle of its part for the circular arc of radius
P) with the length (L of elastomer (E) composition
E) ratio, this thickness can be from { D=(L than D
P), (L
E) calculate.
2. the described Thermoadhesive conjugate fiber of claim 1, wherein the fusing point of this elastomer (E) is in 100～220 ℃ scope.
The described Thermoadhesive conjugate fiber of 3 claims 1, wherein the fusing point of this polyester (P) is higher more than 10 ℃ than this elastomeric fusing point.
4. the described Thermoadhesive conjugate fiber of claim 2, wherein, this elastomer (E) is the polyesters elastomer, the M-phthalic acid, the main diol component that are the main sour composition terephthalic acid (TPA) and 0～50% (mole) that is 40～100% (moles) are 1,4-butanediol, main soft chain segment composition be poly-(alkylene oxide) glycol, its copolymerization amount of mean molecule quantity 400～5000 in the scope of 5～80% (weight), inherent viscosity is 0.6～1.7 polyesters elastomer.
5. the described Thermoadhesive conjugate fiber of claim 3, wherein this composition (P) is a polybutylene terephthalate (PBT).
6. the described Thermoadhesive conjugate fiber of claim 1, wherein used on the surface of this Thermoadhesive conjugate fiber with the fibre weight be in benchmark, 0.2～5.0% (weight) scope, based on the finish of amorphous polyether ester based block copolymer.
7. highly elastic fiber balls, it is characterized in that, in crystalline thermoplastic elastomer (E) and the fusing point crystallinity inelastic polyester (P) higher than this elastomer (E) with E: P=20 on the circular fiber section: in the composite fibre that 80～80: 20 area ratio configuration forms, the regulation of following important document (1)～(5) is satisfied on the section of this fiber and surface, the fiber balls that such Thermoadhesive conjugate fiber is constituted with the total fiber weight staple fibre group that to be benchmark 5～49% (weight) form with the fusion of inelastic polyester class crimped staple, and its Thermoadhesive conjugate fiber each other or in the fiber interlacing point of this Thermoadhesive conjugate fiber and inelastic polyester class crimped staple at least a portion formed the reelability thermal bond points:
This elastomer of important document (1) (E) on the fiber section, be configured to by 2 different circular arcs of radius of curvature form crescent, and the big curve (r of radius of curvature
1) constitute the part of outer peripheral lines;
This polyester of important document (2) (P) on the fiber section along forming little that root curve (r of half moon-shaped 2 curve mean curvature radiuses
2) combine with this elastomer, on the other hand, that root curve (r that radius of curvature is big
1) form the part of circular-arc fiber surface, thus in being 25～49% scope, its frequency R becomes outer peripheral lines; Wherein frequency R is defined as at the 1st figure with (r
1) be (L in the circle of radius
3) account for its wholecircle week (L
1+ L
3) ratio, this frequency R can be from [R={ (L
3)/(L
1+ L
3) * 100 (%)] calculate;
This radius of curvature of important document (3) (r
1) and radius of curvature (r
2) ratio (r
1/ r
2) be that radius of curvature compares C
rGreater than 1 less than 2 scope in;
This radius of curvature of important document (4) (r
2) the bend ratio C of curve in 1.1～2.5 scope; Wherein bend ratio C is defined as among the 1st figure with (r
2) be the circular arc (L of radius
2) length with (r
1) be circumference and this circular arc (L of the circle of radius
2) two intersection points between (P
1～P
2Between) the ratio of length (L), this bend ratio C can be from { C=(L
2)/(L) } calculate; With
The thickness of this elastomer of important document (5) (E) and polyester (P) is than in 1.2～3 scope; Wherein thickness is defined as among the 1st figure than D and is passing through with (r
1) be radius circle the center of circle and with (r
2) become the length (L of polyester (P) composition on the rectilinear direction in the center of circle of circle of its part for the circular arc of radius
P) with the length (L of elastomer (E) composition
E) ratio, this thickness can be from { D=(L than D
P)/(L
E) calculate.
8. the described highly elastic fiber balls of claim 7, wherein the fusing point of this elastomer (E) is in 100～220 ℃ scope.
9. the described highly elastic fiber balls of claim 7, wherein the fusing point of this polyester (P) is higher more than 10 ℃ than this elastomeric fusing point.
10. the described highly elastic fiber balls of claim 8, wherein, this elastomer (E) is the polyesters elastomer, the M-phthalic acid, the main diol component that are the main sour composition terephthalic acid (TPA) and 0～50% (mole) that is 40～100% (moles) are 1,4-butanediol, main soft chain segment composition be poly-(alkylene oxide) glycol, its copolymerization amount of mean molecule quantity 400～5000 in the scope of 5～80% (weight), inherent viscosity is 0.6～17 polyesters elastomer.
11. the described highly elastic fiber balls of claim 7, wherein, the independent bulkiness that inelastic polyester class crimped staple is measured according to JIS L 1097 methods is at 0.5g/cm
2Under the load is 30g/cm
3～120g/crm
3
12. the described highly elastic fiber balls of claim 7, wherein, the independent bulkiness that inelastic polyester class crimped staple is measured according to JIS L 1097 methods is at 10g/cm
2Under the load is 15g/cm
3～60g/cm
3
13. the described highly elastic fiber balls of claim 7, wherein, the filament number of inelastic polyester class crimped staple was 1～100 dawn.
14. the described highly elastic fiber balls of claim 7 wherein, has adhered to lubricant on the surface of inelastic polyester class crimped staple.
15. the described highly elastic fiber balls of claim 9, wherein, this composition (P) is a polybutylene terephthalate (PBT).
16. the described highly elastic fiber balls of claim 7 wherein, constitutes among the staple fibre group of fiber balls that some is outstanding and become the fine hair shape on the surface of this orbicule.
17. the described highly elastic fiber balls of claim 16, wherein, the fine hair ratio of giving prominence on the fiber balls surface even compare with Thermoadhesive conjugate fiber, also is that inelastic polyester class crimped staple one side is big.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95197829A CN1079851C (en) | 1995-12-25 | 1995-12-25 | Heat-bondable conjugated fiber and high-modulus fiber globoid made thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN95197829A CN1079851C (en) | 1995-12-25 | 1995-12-25 | Heat-bondable conjugated fiber and high-modulus fiber globoid made thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1181790A true CN1181790A (en) | 1998-05-13 |
| CN1079851C CN1079851C (en) | 2002-02-27 |
Family
ID=5083377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95197829A Expired - Lifetime CN1079851C (en) | 1995-12-25 | 1995-12-25 | Heat-bondable conjugated fiber and high-modulus fiber globoid made thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1079851C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104451926A (en) * | 2014-12-23 | 2015-03-25 | 常熟市云燕化纤有限公司 | Composite antibacterial fiber |
| US9216055B2 (en) | 2009-08-05 | 2015-12-22 | Scr Inc. | Systems, devices and methods for treating the heart with ablation |
| CN107687035A (en) * | 2017-08-25 | 2018-02-13 | 温州市金鸳鸯服装有限公司 | It is a kind of to be used to make composition of suture and preparation method thereof and application method |
| CN109183167A (en) * | 2018-09-21 | 2019-01-11 | 江苏鑫博高分子材料有限公司 | Prosperous synthetic fibre spinning process |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6184824A (en) * | 1984-10-03 | 1986-04-30 | Nec Corp | Semiconductor ic |
| JP2870711B2 (en) * | 1990-04-26 | 1999-03-17 | 株式会社クラレ | Heat-fusible conjugate fiber with durable hydrophilicity |
| CN1105399A (en) * | 1994-01-14 | 1995-07-19 | 上海市合成纤维研究所 | Method for making improved low-melting point composite fibre |
| JP3569972B2 (en) * | 1994-08-11 | 2004-09-29 | チッソ株式会社 | Heat-fusible composite fiber and heat-fusible nonwoven fabric |
-
1995
- 1995-12-25 CN CN95197829A patent/CN1079851C/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9216055B2 (en) | 2009-08-05 | 2015-12-22 | Scr Inc. | Systems, devices and methods for treating the heart with ablation |
| US9504523B2 (en) | 2009-08-05 | 2016-11-29 | Scr Inc. | Systems and methods for treating the heart with ablation |
| US9713495B2 (en) | 2009-08-05 | 2017-07-25 | Lanark Medical Products | Systems and methods for treating the heart with ablation |
| CN104451926A (en) * | 2014-12-23 | 2015-03-25 | 常熟市云燕化纤有限公司 | Composite antibacterial fiber |
| CN107687035A (en) * | 2017-08-25 | 2018-02-13 | 温州市金鸳鸯服装有限公司 | It is a kind of to be used to make composition of suture and preparation method thereof and application method |
| CN109183167A (en) * | 2018-09-21 | 2019-01-11 | 江苏鑫博高分子材料有限公司 | Prosperous synthetic fibre spinning process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1079851C (en) | 2002-02-27 |
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