WO2012028084A1 - 一种随机热粘结变异形长丝 - Google Patents

一种随机热粘结变异形长丝 Download PDF

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Publication number
WO2012028084A1
WO2012028084A1 PCT/CN2011/079082 CN2011079082W WO2012028084A1 WO 2012028084 A1 WO2012028084 A1 WO 2012028084A1 CN 2011079082 W CN2011079082 W CN 2011079082W WO 2012028084 A1 WO2012028084 A1 WO 2012028084A1
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WIPO (PCT)
Prior art keywords
filament
monofilament
spinning
density
spinneret
Prior art date
Application number
PCT/CN2011/079082
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English (en)
French (fr)
Inventor
李水荣
凌荣根
陆展华
袁文冲
段树军
吴维光
徐光华
吴金亮
周先何
Original Assignee
荣盛石化股份有限公司
浙江荣翔化纤有限公司
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Application filed by 荣盛石化股份有限公司, 浙江荣翔化纤有限公司 filed Critical 荣盛石化股份有限公司
Priority to US13/806,873 priority Critical patent/US20130101844A1/en
Priority to JP2013526306A priority patent/JP5711374B2/ja
Publication of WO2012028084A1 publication Critical patent/WO2012028084A1/zh

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D1/00—Treatment of filament-forming or like material
    • D01D1/06—Feeding liquid to the spinning head
    • D01D1/09—Control of pressure, temperature or feeding rate
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/20—Formation of filaments, threads, or the like with varying denier along their length
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/253—Formation of filaments, threads, or the like with a non-circular cross section; Spinnerette packs therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2922—Nonlinear [e.g., crimped, coiled, etc.]
    • Y10T428/2925—Helical or coiled
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2973—Particular cross section

Definitions

  • the invention relates to a random thermal bonding variant filament, in particular to the three-viscous flow flat filament sprayed by the three slits of the spinneret continuously changing the bonding point of the fiber along the longitudinal direction of the fiber.
  • the ever-changing profiled cross-section filaments belong to the technical field of chemical fiber manufacturing.
  • the history and development history of chemical fiber is the history of people using science and technology to imitate, substitute, and transcend natural fibers.
  • the length of the chemical fiber filaments can be made infinitely long, and the linear density of the monofilament, the longitudinal structure of the monofilament, the cross-sectional shape of the monofilament, and the monofilament properties are always maintained. These have surpassed the technical characteristics of natural fibers.
  • the cross section of the chemical fiber spun from the circular orifice is round, and it is also the most widely used and the most productive variety.
  • Shaped fibers have broad market prospects in three major areas of clothing, decoration and industrial textiles, and are ideal for nonwovens and imitation leather coatings. But whether it is a circular wire or a non-circular wire, it is a whole bundle of filaments or monofilaments, in the length of the fiber in the infinite length, such as the linear density of the whole bundle, the number of filaments of the whole bundle (f number) All remain the same.
  • the monofilament fiber structure, monofilament shaped cross-sectional shape, monofilament shaped radial irregularity DR (%), monofilament linear density, etc. of the whole bundle are kept unchanged, the fiber lacks rich and varied three-dimensional structure, and the fiber variety is monotonous. Not rich enough.
  • the object of the present invention is to overcome the shortcomings of the prior art spinning special-shaped wire technology, and to provide a random heat-bonding variant filament having a variety of three-dimensional structure, wide variety and wide application range, which is to be sprayed by a spray.
  • the longitudinal direction along the monofilament refers to the shape of the profiled cross section of the monofilament, and the radial profile of the monofilament, the monofilament linear density, the number of filaments (f), the longitudinal three-dimensional structure of the monofilament, and the monofilament Physical properties, etc. are random and strained.
  • the object of the present invention is achieved by the following technical solution: the fiber structure, the bus density, the monofilament linear density, the number of monofilaments, the cross-sectional shape of the monofilament, and the single length of the variegated filament along the axial length of the filament Wire radial profile
  • the three-dimensional shape structure of the DR, the monofilament, and the physical properties of the monofilament are all randomly strained due to changes in process conditions.
  • the variant filament is supplied by the melt metering pump according to a set periodic control to adjust the supply of the spinning melt, and the spinning winding speed is constant, so that the filament bus density and monofilament linear density ejected from the spinneret It also changes periodically; due to the change of the melt pressure of the spinning assembly, the expansion amplitude of the polymer elastomer sprayed by the slit is changed, and the bonding state is at least a reliable bond, an unreliable bond, and The number of unbonded and monofilament roots changes regularly and periodically.
  • An oscillating cooling wind perpendicular to the direction of motion of the fiber is disposed at a position 70 mm to 120 mm directly below the spinneret, and the oscillating cooling wind is periodically arranged to periodically pulsate the polymer elastomer which has just been ejected from the slit of the spinner.
  • the adhesive point is in an unstable state of disturbing oscillation, that is, the position of the bonding point is randomly changed, and the bonding cross-section is various, and the monofilament linear density, the number of monofilaments, and the cross-sectional shape of the monofilament are also randomly changed at random.
  • the spinneret comprises a slit slit having a length of two short and three slits, and a periodic change of a bonding state of the polymer elastomer discharged therefrom, the linear density of the three strips is different, and each of the joints is cooled and solidified.
  • the shrinkage rate is also different.
  • the internal stress and mutual pulling force of the bonded fiber are also randomly changed, resulting in a spiral shape of the deformed wire.
  • the spiral direction sometimes turns left and sometimes right-handed, the fiber sometimes has a straight curvature, and the fiber plane is sometimes concave and sometimes convex. .
  • the polymer elastomer sprayed from one long, two short and three spinner slits may be a random bond of the same component material, or a composite random bond of two materials of different properties, especially two
  • the shrinkage performance is compounded and randomly bonded to different component materials, and the three-dimensional shape has a rich and colorful stereoscopic effect.
  • the spiral direction is sometimes left-handed and sometimes right-handed
  • the fiber is sometimes straight and curved
  • the fiber plane is sometimes concave and sometimes convex
  • the physical properties and three-dimensional shape of the monofilament are randomly and strained, so that a bundle of multifilaments and filaments
  • the infinitely long fiber structure of the monofilament obtains a variety of variant filaments. It has a variety of three-dimensional structure, and has a variety of varieties, a wide range of applications, simple manufacturing process, low production cost, and good quality of manufactured products.
  • Figure 1 is a schematic view showing the structure of a set of orifices of the spinneret of the present invention.
  • 2-9 are schematic views showing the state of random bonding of at least several variant shaped wires according to the present invention.
  • the fiber structure, bus density, monofilament linear density, and number of filaments of the variant filaments of the present invention along the axial length of the filament are infinitely long.
  • monofilament cross-sectional shape, monofilament radial profile DR %, monofilament three-dimensional shape structure, monofilament physical properties are all random due to changes in process conditions Change.
  • the variant filament is supplied by the melt metering pump according to a set periodic control to adjust the supply of the spinning melt, and the spinning winding speed is constant, so that the filament bus density and monofilament linear density ejected from the spinneret It also changes periodically; due to the change of the melt pressure of the spinning assembly, the expansion amplitude of the polymer elastomer sprayed by the slit is changed, and the bonding state is at least a reliable bond, an unreliable bond, and The number of unbonded and monofilament roots changes regularly and periodically.
  • An oscillating cooling wind perpendicular to the direction of motion of the fiber is disposed at a position 70 mm to 120 mm directly below the spinneret, and the oscillating cooling wind is periodically arranged to periodically pulsate the polymer elastomer which has just been ejected from the slit of the spinner.
  • the adhesive point is in an unstable state of disturbing oscillation, that is, the position of the bonding point is randomly changed, and the bonding cross-section is various, and the monofilament linear density, the number of monofilaments, and the cross-sectional shape of the monofilament are also randomly changed at random.
  • the spinneret plate comprises a slit slit having two long lengths and three slits, and the periodic state of the bonding state of the polymer elastomer sprayed therefrom is different, and the linear density of the three strips is different.
  • the shrinkage rates of the fibers are also different.
  • the internal stress and mutual force of the bonded fibers are also randomly changed, resulting in a spiral shape of the deformed filaments.
  • the spiral direction is sometimes left-handed and sometimes right-handed.
  • the fibers are sometimes straight and the fibers are sometimes concave. Sometimes convex.
  • the polymer elastomer sprayed from one long, two short and three spinner slits may be a random bond of the same component material, or a composite random bond of two materials of different properties, especially two
  • the shrinkage performance is compounded and randomly bonded to different component materials, and the three-dimensional shape has a rich and colorful stereoscopic effect.
  • the variant filament is a high polymer elastomer made by a spinneret provided with a plurality of sets of orifices, each set of orifices consisting of three slit slits of one long and two short, as shown in FIG.
  • the three-dimensional shape structure of the monofilament and the physical properties of the monofilament are all randomly strained due to changes in the process conditions.
  • the shaped filament of the present invention is a polymer elastomer which is randomly bonded to each other of the same component material, or a composite polymer which is randomly bonded by two materials of different properties, or It is a polymer elastomer which is randomly bonded by two kinds of materials with different shrinkage properties.
  • the method for manufacturing the random thermal bonded variant filaments is as follows: First, a spinneret is used, as shown in Fig. 1, which is provided with a plurality of sets of orifices, each of which is composed of three long and two short strips.
  • the slit slit is composed, and the amount of the three slit slits is controlled when the spinning polymer elastomer ejects three slit slits, and the polymer elastomers are adhered to each other by the expansion;
  • the melt metering pump adjusts the supply of the spinning melt according to the set periodic control, and the spinning winding speed is constant, so that the filament bus density and the monofilament linear density ejected from the spinneret are also periodically changed;
  • the change in melt pressure causes the expansion amplitude of the polymer elastomer ejected from the spinneret slit to change, and the bonding state is at least a reliable bond, an unreliable bond, a non-
  • the oscillating cooling wind is arranged to regularly circulate the polymer elastomer just ejected from the spinneret slit, so that the bonding point is in a disturbing swing stable state.
  • the bonding state of the polymer elastomer discharged from one long, two short and three spinning slits in the spinneret periodically changes, and the linear density of the three strips is different, and the shrinkage of the joint during cooling and solidification The rate is different.
  • the internal stress and mutual force of the bonded fiber are also randomly changed, resulting in a spiral shape of the deformed wire.
  • the spiral direction sometimes turns left and sometimes right-handed, the fiber sometimes has a straight curvature, and the fiber plane is sometimes concave and sometimes convex.
  • the random thermal bonded variant filament according to the present invention refers to the bus density of the bundle, the monofilament linear density, the number of filaments (f number), the cross-sectional shape of the monofilament, and the radial irregularity DR of the monofilament (%). ), the three-dimensional shape structure of the monofilament, the physical properties of the monofilament, etc. are all randomly strained due to changes in the process conditions.
  • Example 1 Spinning of the hot-bonded variant filaments on the spinneret is designed with a plurality of sets of orifices, each of which consists of a length of two short slits, as shown in Figure 1. Shown. The amount of the three slit slit gaps is controlled when the spun polymer elastomer ejects three slit slits due to the expansion of the polymer elastomer. The relative clearance and geometry of the three spinnerets can be determined by different product specifications and requirements.
  • the melt pressure of the spinning assembly is adjusted and controlled by the melt metering pump according to the setting.
  • the cyclical change of the melt amount of the metering pump is maintained, but the spinning speed remains unchanged, resulting in the spinneret.
  • the density of the spun filament and the linear density of the monofilament are regularly changed periodically; and because the melt pressure of the spinning assembly is periodically changed according to the setting, it is ejected by a slit of one long, two short and three slits.
  • the expansion amplitude of the high-polymer elastomer is periodically changed in a regular manner, so that the expansion contacts each other and the bonding state is at least a regular periodic change of reliable bonding, unreliable bonding, and non-bonding.
  • the horizontally oscillating cooling wind perpendicular to the direction of fiber movement is just as scheduled and regularly perturbed from the spinneret slit.
  • the high-polymer elastomer causes the bond point to be unstable, that is, the position of the bond point is randomly changed, and the cross-section of the bond is at least as shown in Fig. 2, and the monofilament linear density and the number of filaments (f-number) are also Synchronization is random.
  • the cross-section of the bond of two long and three high-polymers ejected from the slit of the spine is shown in Fig. 2-9, periodically changing, the density of the three lines is different, and the linear density is contracted. Intense and shrinkable, the shrinkage rate is different when the bond is cooled and solidified.
  • the internal stress and mutual force of the bonded fiber are also randomly changed, resulting in a spiral shape of the deformed wire, sometimes the left-handed and the right-handed spiral.
  • the fibers are sometimes straight and curved, and the planes of the fibers are sometimes concave and sometimes convex.
  • the physical properties and three-dimensional shapes of the monofilament are randomly and strained.
  • the high-polymer elastomer sprayed from one long, two short and three spinneret slits may be bonded to each other by the same component material, or may be a composite bond of two different properties, especially two groups having different shrinkage properties.
  • the composite bond of the fraction is more effective.
  • a variety of filaments are obtained from a bundle of multifilament filaments and an infinitely long fiber structure along the axial direction of the monofilament.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Artificial Filaments (AREA)

Description

说 明 书
一种随机热粘结变异形长丝
技术领域
本发明涉及的是一种随机热粘结变异形长丝， 尤其是将由喷丝板三狭缝喷出的三条粘 流态扁平丝沿纤维纵向随机热粘连的粘结点不断改变致纤维截面形状不断改变的异形截 面长丝， 属于化学纤维制造技术领域。
背景技术
化学纤维的发明和发展历史就是人们用科学技术， 模仿、替代、超越天然纤维的历史。 化学纤维长丝长度可以制成无限长，且保持单丝的线密度、单丝纵向结构、单丝截面形状、 单丝性能始终保持不变。 这些均已超越了天然纤维的技术特征。 由圆型喷丝孔纺制的 化学纤维截面是圆形， 也是目前用途最广， 产量最大的品种。 由非圆型喷丝孔纺制的具有 特殊横截面形状的化学纤维， 称异形纤维。 异形纤维是相对于圆形纤维而言的。 它是用有 特殊几何形状的喷丝板孔挤压喷出冷却固化而成， 使截面呈一定几何形状的纤维。 像天然 纤维那样， 使它们呈三角形、 τ字形、 十字形、 Y形、 多叶形等。 异形纤维的性质随截 面形状和径向异形度 1 ( % )的不同而不同。 异形纤维的特性是富有弹性、 不起毛起 球， 有高度的蓬松性、 覆盖性和防污效果。 还可改善其织物的悬垂性和耐折皱性等。
近几年来， 异形纤维的品种开发丰富多彩和应用日益广泛。 异形纤维在衣着、 装 饰及产业用纺织品三大领域内有着广阔的市场前景，也是非织造布及仿皮涂层的理想 原料。但无论是圆形丝或是非圆形丝，是整束丝或单丝，沿纤维轴向无限长的长度上， 如整束丝的线密度、 整束丝的单丝根数（f数）都保持一成不变。 整束丝中各单丝纤维 结构、 单丝异形横截面形状、 单丝异形径向异形度 DR ( %)、 单丝线密度等都保持一成 不变， 纤维缺乏丰富多变的立体结构， 纤维品种单调， 不够丰富。
发明内容
本发明的目的在于克服现有纺制异形丝技术存在的不足， 而提供一种纤维具有多变的 立体结构、 且品种丰富多彩、 应用范围广的随机热粘连变异形长丝， 它是将由喷丝板三狭 缝喷出的三条粘流态膨化状的扁平单丝，由扰动的冷却风和循环变化的纺丝组件熔体压 力， 使沿单丝纵向随机热粘连的粘结点不断改变致单丝截面不断改变的异形横截面单丝。 沿单丝纵向是指单丝的异形横截面的形状随机应变的， 同时单丝径向异形度 % )、 单 丝线密度、 单丝根数 （f数）、 单丝的纵向三维结构、 单丝的物理性能等都随机而应变。 本发明的目的是通过如下技术方案来完成的， 该变异形长丝沿长丝轴向无限长的长 度上的纤维结构、 总线密度、 单丝线密度、 单丝根数、 单丝截面形状、 单丝径向异形度
DR 、 单丝三维形状结构、 单丝物理性能都由于工艺条件的变化而随机应变。
所述的变异形长丝是由熔体计量泵按设定周期性控制调节供应纺丝熔体， 而纺丝卷 绕速度不变， 致使喷丝板喷出的长丝总线密度、 单丝线密度也周期性变化； 由于纺丝 组件熔体压力的变化使喷丝狭缝喷出的高聚物弹性体的膨胀幅度变化， 相互碰触而粘结 状态至少作可靠粘结、 不可靠粘结、 不粘结和单丝根数有规律周期性变化。
在喷丝板正下方 70mm至 120mm位置设置与纤维运动方向垂直的摆动冷却风， 此摆动 冷却风按设定作有规律的周期性扰动刚从喷丝狭缝喷出的高聚物弹性体， 致使粘结点处 于扰动摆动的不稳定状态， 即粘结点的位置随机在变， 粘结截面状况多样， 单丝线密度、 单丝根数、 单丝截面形状也同步随机在变。 所述喷丝板包括有一长二短三条喷丝狭缝， 从 其中喷出的高聚物弹性体的粘结状态的周期性变化， 三条的线密度又不一样，粘结冷却固 化时的各收縮率也不一样， 粘结后的纤维内部应力和相互牵扯力也随机在变， 致使变异形 丝呈螺旋状结构， 螺旋方向有时左旋有时右旋， 纤维有时直有曲， 纤维平面有时凹有时凸。
由一长二短三条喷丝狭缝喷出的高聚物弹性体可以是同一组分材料的相互随机粘结， 也可以是两种性能不同组分材料的复合随机粘结， 尤其是两种收縮性能不同组分材料的复 合随机粘结， 三维形状更具有丰富多彩的立体效果。
由于从喷丝狭缝喷出的三条 （一长二短） 高聚物线密度不一样， 冷却收縮也不一样， 粘结后的纤维内部应力和相互牵扯力也随机在变， 致使变异形丝呈螺旋状结构， 螺旋方向 有时左旋有时右旋， 纤维有时直有曲， 纤维平面有时凹有时凸， 单丝的物理性能和三维形 状等都随机而应变， 使一束复丝的单丝间及沿单丝轴向无限长的纤维结构性能获得丰富 多彩的变异形长丝。 它具有多变的立体结构、 且品种丰富多彩、 应用范围广， 制造工艺简 单， 制作成本低， 制造的产品质量好等特点。
附图说明
图 1是本发明所述喷丝板一组喷丝孔的结构示意图。
图 2— 9是本发明所述的至少几种变异形丝随机粘结截面状况示意图。
具体实施方式
下面将结合附图及具体实施例对本发明作详细的介绍： 本发明所述的变异形长丝沿长 丝轴向无限长的长度上的纤维结构、 总线密度、 单丝线密度、 单丝根数、 单丝截面形状、 单丝径向异形度 DR %、单丝三维形状结构、单丝物理性能都由于工艺条件的变化而随机应 变。
所述的变异形长丝是由熔体计量泵按设定周期性控制调节供应纺丝熔体， 而纺丝卷 绕速度不变， 致使喷丝板喷出的长丝总线密度、 单丝线密度也周期性变化； 由于纺丝 组件熔体压力的变化使喷丝狭缝喷出的高聚物弹性体的膨胀幅度变化， 相互碰触而粘结 状态至少作可靠粘结、 不可靠粘结、 不粘结和单丝根数有规律周期性变化。
在喷丝板正下方 70mm至 120mm位置设置与纤维运动方向垂直的摆动冷却风， 此摆动 冷却风按设定作有规律的周期性扰动刚从喷丝狭缝喷出的高聚物弹性体， 致使粘结点处 于扰动摆动的不稳定状态， 即粘结点的位置随机在变， 粘结截面状况多样， 单丝线密度、 单丝根数、 单丝截面形状也同步随机在变。
所述的喷丝板上包括有一长二短三条喷丝狭缝， 从其中喷出的高聚物弹性体的粘结状 态的周期性变化， 三条的线密度又不一样， 粘结冷却固化时的各收縮率也不一样， 粘结后 的纤维内部应力和相互牵扯力也随机在变， 致使变异形丝呈螺旋状结构， 螺旋方向有时左 旋有时右旋， 纤维有时直有曲， 纤维平面有时凹有时凸。
由一长二短三条喷丝狭缝喷出的高聚物弹性体可以是同一组分材料的相互随机粘结， 也可以是两种性能不同组分材料的复合随机粘结， 尤其是两种收縮性能不同组分材料的复 合随机粘结， 三维形状更具有丰富多彩的立体效果。 变异形长丝是通过一设置有多组喷丝 孔、 每组喷丝孔由一长二短的三条喷丝狭缝组成的喷丝板制成的高聚物弹性体， 见图 1所 示， 所述的变异形长丝沿长丝轴向无限长的长度上的纤维结构、 总线密度、单丝线密度、 单丝根数、 单丝截面形状、 单丝径向异形度 DR ( S。）、 单丝三维形状结构、 单丝物理性能都 由于工艺条件的变化而随机应变。
本发明所述的异型长丝是同一组分材料的相互随机粘结的高聚物弹性体，也可以是两 种性能不同组分材料的复合随机粘结而成的高聚物弹性体， 或是两种收縮性能不同组分材 料的复合随机粘结而成的高聚物弹性体。
随机热粘结变异形长丝的制造方法是： 第一， 利用一块喷丝板， 见图 1所示， 其上设 置有多组喷丝孔、 每组喷丝孔由一长二短的三条喷丝狭缝组成， 三条喷丝狭缝间隙量控制 在纺丝高聚物弹性体喷出三条喷丝狭缝时， 由于高聚物弹性体的膨胀相互碰触而粘结； 第 二， 由熔体计量泵按设定周期性控制调节供应纺丝熔体， 而纺丝卷绕速度不变， 致使喷 丝板喷出的长丝总线密度、 单丝线密度也周期性变化； 由于纺丝组件熔体压力的变化 使喷丝狭缝喷出的高聚物弹性体的膨胀幅度变化， 相互碰触而粘结状态至少作可靠粘结、 不可靠粘结、不粘结和单丝根数有规律周期性变化；第三，在喷丝板正下方 70mm至 120mm 位置设置与纤维运动方向垂直的摆动冷却风， 此摆动冷却风按设定作有规律的周期性扰 动刚从喷丝狭缝喷出的高聚物弹性体， 致使粘结点处于扰动摆动的不稳定状态。
所述的从喷丝板中一长二短三条喷丝狭缝喷出的高聚物弹性体的粘结状态发生周期 性变化， 三条的线密度存在不一样， 粘结冷却固化时的各收縮率也不一样， 粘结后的纤维 内部应力和相互牵扯力也随机在变， 致使变异形丝呈螺旋状结构， 螺旋方向有时左旋有时 右旋， 纤维有时直有曲， 纤维平面有时凹有时凸。 本发明所述的随机热粘结变异形长丝， 是指这束丝的总线密度、 单丝线密度、 单丝根数（f数）、 单丝截面形状、 单丝径向异形度 DR ( %)、 单丝三维形状结构、 单丝物理性能等都由于工艺条件的变化而随机应变。
实施例 1 : 1. 纺制随机热粘结变异形长丝的喷丝板上设计有很多组喷丝孔， 每组喷丝 孔由一长二短的三条喷丝狭缝组成， 如图 1所示。 三条喷丝狭缝间隙量控制在纺丝高聚物 弹性体喷出三条喷丝狭缝时， 由于高聚物弹性体的膨胀相互碰触而粘结。 三条喷丝狭缝的 相对间隙和几何尺寸可由不同产品规格和要求而定。
2. 由熔体计量泵调节和控制纺丝组件熔体压力按设定作有规律的周期性变化， 计 量泵供熔体量的周期性变化， 但纺丝速度保持不变， 致使喷丝板喷出的长丝总线密度、 单丝线密度作有规律的周期性变化； 又由于纺丝组件熔体压力按设定作有规律的周期 性变化， 由一长二短三条喷丝狭缝喷出的高聚物弹性体的膨胀幅度作有规律的周期性变 化， 致使膨胀相互碰触而粘结状态至少作可靠粘结、不可靠粘结、不粘结的有规律周期性 变化。
3. 在喷丝板正下方 70mm至 120mm位置配置与纤维运动方向垂直的水平方向摆动冷却 风， 此水平方向摆动的冷却风按设定作有规律的周期性扰动刚从喷丝狭缝喷出的高聚物 弹性体， 致使粘结点处于不稳定状态， 即粘结点的位置随机在变， 粘结状况截面至少如图 2所示， 单丝线密度、 单丝根数 （f数） 也同步随机在变。
综合上述技术的作用， 从喷丝狭缝喷出的一长二短三条高聚物粘结状态截面， 见图 2 一 9所示， 周期性变化， 三条线密度又不一样， 线密度细则收縮激烈、 收縮率大， 粘结冷 却固化时的各收縮率也不一样， 粘结后的纤维内部应力和相互牵扯力也随机在变， 致使变 异形丝呈螺旋状结构， 螺旋方向有时左旋有时右旋， 纤维有时直有曲， 纤维平面有时凹有 时凸， 单丝的物理性能和三维形状等都随机而应变。 由一长二短三条喷丝狭缝喷出的高聚 物弹性体可以是同一组分材料的相互粘结， 也可以是两种性能不同组分复合粘结， 尤其是 两种收縮性能不同组分的复合粘结更有效果。使一束复丝的单丝间及沿单丝轴向无限长的 纤维结构性能获得丰富多彩的变异形长丝。

Claims

权 利 要 求 书
1、 一种随机热粘结变异形长丝， 其特征是： 该变异形长丝沿长丝轴向无限长的长度 上的纤维结构、总线密度、单丝线密度、单丝根数、单丝截面形状、单丝径向异形度 DR %、 单丝三维形状结构、 单丝物理性能都由于工艺条件的变化而随机应变。
2、 根据权利要求 1所述的随机热粘结变异形长丝， 其特征在于所述的变异形长丝是 由熔体计量泵按设定周期性控制调节供应纺丝熔体， 而纺丝卷绕速度不变， 致使喷丝 板喷出的长丝总线密度、 单丝线密度也周期性变化； 由于纺丝组件熔体压力的变化使 喷丝狭缝喷出的高聚物弹性体的膨胀幅度变化， 相互碰触而粘结状态至少作可靠粘结、 不 可靠粘结、 不粘结和单丝根数有规律周期性变化。
3、根据权利要求 2所述的随机热粘结变异形长丝，其特征在于在喷丝板正下方 70mm 至 120mm位置设置与纤维运动方向垂直的摆动冷却风， 此摆动冷却风按设定作有规律的 周期性扰动刚从喷丝狭缝喷出的高聚物弹性体， 致使粘结点处于扰动摆动的不稳定状态， 即粘结点的位置随机在变， 粘结截面状况多样， 单丝线密度、 单丝根数、 单丝截面形状也 同步随机在变。
4、 根据权利要求 3所述的随机热粘结变异形长丝， 其特征在于所述的喷丝板上包括 有一长二短三条喷丝狭缝， 从其中喷出的高聚物弹性体的粘结状态的周期性变化， 三条的 线密度又不一样， 粘结冷却固化时的各收縮率也不一样， 粘结后的纤维内部应力和相互牵 扯力也随机在变， 致使变异形丝呈螺旋状结构， 螺旋方向有时左旋有时右旋， 纤维有时直 有曲， 纤维平面有时凹有时凸。
5、 根据权利要求 4所述的随机热粘结变异形长丝， 其特征在于由一长二短三条喷丝 狭缝喷出的高聚物弹性体可以是同一组分材料的相互随机粘结， 也可以是两种性能不同组 分材料的复合随机粘结， 尤其是两种收縮性能不同组分材料的复合随机粘结， 三维形状更 具有丰富多彩的立体效果。
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