WO2022078422A1 - Polyester composite blended fiber yarn and preparation method therefor - Google Patents

Polyester composite blended fiber yarn and preparation method therefor Download PDF

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WO2022078422A1
WO2022078422A1 PCT/CN2021/123716 CN2021123716W WO2022078422A1 WO 2022078422 A1 WO2022078422 A1 WO 2022078422A1 CN 2021123716 W CN2021123716 W CN 2021123716W WO 2022078422 A1 WO2022078422 A1 WO 2022078422A1
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polyester
yarn
polyester filament
filament
mixed fiber
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PCT/CN2021/123716
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French (fr)
Chinese (zh)
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饶波
王长沙
黄儒
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东丽纤维研究所(中国)有限公司
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Publication of WO2022078422A1 publication Critical patent/WO2022078422A1/en

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    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01HSPINNING OR TWISTING
    • D01H13/00Other common constructional features, details or accessories
    • D01H13/28Heating or cooling arrangements for yarns
    • DTEXTILES; PAPER
    • D02YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02GCRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02Yarns or threads characterised by the material or by the materials from which they are made
    • D02G3/04Blended or other yarns or threads containing components made from different materials
    • DTEXTILES; PAPER
    • D02YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02GCRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/34Yarns or threads having slubs, knops, spirals, loops, tufts, or other irregular or decorative effects, i.e. effect yarns
    • DTEXTILES; PAPER
    • D02YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02GCRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/36Cored or coated yarns or threads

Abstract

Disclosed is a polyester composite blended fiber yarn. The polyester composite blended fiber yarn is composed of polyester filaments A and B, wherein polyester filament B forms filament circles outside polyester filament A; the length difference between polyester filament A and polyester filament B is 2-30%, and the boiling water shrinkage rate of polyester filament A is greater than that of polyester filament B by 3% or more; and after the polyester composite blended fiber yarn is treated in boiling water at 98ºC for 30 min, the length difference between polyester filament A and polyester filament B is increased by 15-200% as compared with the length difference before treatment.

Description

聚酯复合混纤纱及其制备方法Polyester composite mixed fiber yarn and preparation method thereof 技术领域technical field
本发明涉及一种聚酯复合混纤纱线及其制备方法,具体的,涉及一种卷装退绕性良好又具有较高蓬松性的聚酯复合混纤纱。The invention relates to a polyester composite mixed fiber yarn and a preparation method thereof, in particular to a polyester composite mixed fiber yarn with good package unwinding and high bulkiness.
背景技术Background technique
复合混纤纱一般是由两种或两种以上的单一纱线通过一定的加工方式复合在一起而得到的一种全新的纱线,它除了兼具有两种单一纱线各自的性能特征外,同时还具有复合混纤纱线自身独特的特征,而且其对应的产品种类繁多,性能优良,深受市场的认可和消费者的青睐。Composite blended yarn is generally a brand-new yarn obtained by combining two or more single yarns through a certain processing method. It has both the performance characteristics of the two single yarns , At the same time, it also has its own unique characteristics of composite mixed fiber yarn, and its corresponding products have a wide variety of products with excellent performance, which are deeply recognized by the market and favored by consumers.
当前复合混纤纱的一大类重要用途是赋予合成纤维织物一定的仿棉效果,即通常所说的“棉感”。而要赋予合成纤维织物一定的仿棉效果,其中最不可忽视的一大特征为纱线的蓬松性。传统通过假捻变形加工得到的单一纱线由于受后期织造中的张力及织物结构的影响,其收缩能力有限,因此导致最终布面的蓬松感较弱,远远达不到仿棉效果。而目前通常用来提高织物蓬松效果的异收缩复合纱由于两者的一步法收缩差过大,容易导致布面收缩剧烈,最终致使织物手感变硬从而使织物的仿棉效果大大降低。另一方面,为了改善此问题,而采用降低织造密度的方法,则又会带来织造效率降低以及生产成本增加等问题。One of the most important uses of the current composite blended yarn is to impart a certain cotton-like effect to synthetic fiber fabrics, which is commonly referred to as "cotton feeling". To give synthetic fiber fabrics a certain cotton-like effect, one of the most important features that cannot be ignored is the bulkiness of the yarn. Due to the influence of the tension and fabric structure in the later weaving process, the traditional single yarn obtained by false twist texturing has limited shrinkage capacity, so the final fabric has a weaker fluffy feeling, which is far from the cotton-like effect. However, the different shrinkage composite yarns that are usually used to improve the fluffy effect of fabrics are prone to cause severe shrinkage of the fabric surface due to the excessive one-step shrinkage difference between the two, which eventually makes the fabric feel hard and the cotton-like effect of the fabric is greatly reduced. On the other hand, in order to improve this problem, adopting the method of reducing the weaving density will bring about problems such as a decrease in the weaving efficiency and an increase in the production cost.
因此通过谋求复合纱的一定特殊结构以及两者的异收缩特性来协同逐步提高织物的蓬松性,从而开发出高度仿棉效果的织物正成为解决上述问题的新途径。Therefore, by seeking a certain special structure of the composite yarn and the different shrinkage characteristics of the two to synergistically improve the bulkiness of the fabric, the development of a fabric with a high cotton imitation effect is becoming a new way to solve the above problems.
中国专利CN104278386A公开了一种具有偏心结构的假捻加弹复合丝。虽然采用了超喂率差的方法赋予复合纱一定的丝长差和丝圈结构,但由于产生的丝圈高度过低,因此最终在织物上体现出的蓬松感仍然较弱。Chinese patent CN104278386A discloses a false-twist elastic composite yarn with an eccentric structure. Although the method of overfeed rate difference is used to give the composite yarn a certain difference in yarn length and loop structure, the final fluffy feeling on the fabric is still weak because the height of the loop is too low.
日本专利特开2007-197864公开了至少含有A、B聚酯长丝的混纤丝,其中聚酯长丝A为由不同聚合物形成的并列聚酯长丝,聚酯长丝B的长方向断面可以是均一的也可以有粗细部。该混纤纱线可用于制得既具有良好伸缩弹性,又具有柔软蓬松的手感的起绒织物。但是该混纤纱的丝长差只能限制在10%以内,过大后会造成纱线的卷装退绕性不良等问题。Japanese Patent Laid-Open No. 2007-197864 discloses a mixed filament yarn containing at least A and B polyester filaments, wherein the polyester filament A is a side-by-side polyester filament formed of different polymers, and the long direction of the polyester filament B is The cross section may be uniform or may have thick and thin portions. The mixed fiber yarn can be used to make a fleece fabric with good stretch elasticity and soft and fluffy hand. However, the yarn length difference of the mixed fiber yarn can only be limited within 10%, and if it is too large, it will cause problems such as poor unwinding of the yarn package.
发明内容SUMMARY OF THE INVENTION
本发明的目的在于提供一种卷装退绕性良好且蓬松性优异的聚酯复合混纤 纱,在优选的技术方案中,该混纤纱还具有良好的弹性、染色后呈现自然浓淡条纹感。The purpose of the present invention is to provide a polyester composite blended yarn with good package unwinding and excellent bulkiness. In a preferred technical solution, the blended yarn also has good elasticity, and exhibits natural shades of stripes after dyeing. .
为了实现上述目的,本发明采用如下技术解决方案:In order to achieve the above object, the present invention adopts the following technical solutions:
聚酯复合混纤纱,由聚酯长丝A和聚酯长丝B组成,且聚酯长丝B在聚酯长丝A外形成丝圈。所述聚酯长丝A和聚酯长丝B之间的丝长差为2~30%,优选10~30%;所述聚酯长丝A的沸水收缩率比所述聚酯长丝B大3%以上;所述聚酯复合混纤纱经98℃沸水处理30min后,所述聚酯长丝A和聚酯长丝B的丝长差与处理前相比提高15~200%。The polyester composite blended yarn is composed of polyester filament A and polyester filament B, and the polyester filament B forms a loop outside the polyester filament A. The difference in filament length between the polyester filament A and the polyester filament B is 2-30%, preferably 10-30%; the boiling water shrinkage rate of the polyester filament A is higher than that of the polyester filament B After the polyester composite blended yarn is treated with boiling water at 98°C for 30 minutes, the difference in the length of the polyester filament A and the polyester filament B is increased by 15-200% compared with that before the treatment.
所述聚酯长丝B的沸水收缩率优选在10%以下;单丝纤度优选0.5~1.2dtex。The boiling water shrinkage rate of the polyester filament B is preferably below 10%; the monofilament fineness is preferably 0.5-1.2 dtex.
所述聚酯复合混纤纱的交络数优选在100个/m以上,交络强度优选在80.0%以上。The entanglement number of the polyester composite mixed fiber yarn is preferably 100 pieces/m or more, and the entanglement strength is preferably 80.0% or more.
所述丝圈的高度H与丝圈在聚酯长丝A上的跨度L的比值H/L为0.06~0.35。The ratio H/L of the height H of the loop to the span L of the loop on the polyester filament A is 0.06-0.35.
所述聚酯长丝A优选双组份并列聚酯长丝,更优选PET/PET、PBT/PET或PTT/PET并列聚酯长丝。The polyester filament A is preferably a two-component side-by-side polyester filament, more preferably a PET/PET, PBT/PET or PTT/PET side-by-side polyester filament.
所述聚酯长丝B优选在长度方向上具有交替排列的多个粗纤段和细纤段,且粗纤段和细纤段的直径之比在1.13以上。The polyester filament B preferably has a plurality of thick fiber segments and thin fiber segments alternately arranged in the longitudinal direction, and the ratio of the diameters of the thick fiber segments to the thin fiber segments is 1.13 or more.
本发明还公开了上述聚酯复合混纤纱的制备方法,首先将聚酯预取向丝B先通过热辊进行外牵伸,然后再经热板内牵伸、假捻后与聚酯牵伸丝A在交络器内经空气网络复合,最后再经卷取得到复合混纤纱。The invention also discloses a preparation method of the above polyester composite mixed fiber yarn. First, the polyester pre-oriented yarn B is firstly drawn out through a hot roller, and then is drawn inward by a hot plate, false twisted and then drawn with the polyester. The filament A is compounded by the air network in the interlacer, and finally it is wound to obtain the compound blended yarn.
其中所述聚酯预取向丝B的超喂率为3~32%,在热板上的内牵伸温度为160~220℃,加工速度400~700m/min。The overfeed rate of the polyester pre-oriented yarn B is 3-32%, the internal drawing temperature on the hot plate is 160-220° C., and the processing speed is 400-700 m/min.
本发明所述聚酯复合混纤纱中由聚酯长丝B形成的丝圈高度H和跨度L的比值较大,使得混纤纱的蓬松性优异;且聚酯长丝A、B之间存在沸水收缩率差,使得聚酯复合混纤纱经过沸水处理后,聚酯长丝A、B的丝长差变大,丝圈结构进一步变高(H/L的比值增大),织物的蓬松性也会进一步提高。另外,本发明所述的混纤纱的交络强度较大,这样能够保证纱线在丝圈结构较高(H/L较高)的情况下仍具有较好的卷装退绕性,从而保证纱线具有良好的织造性能。In the polyester composite mixed yarn of the present invention, the ratio of the loop height H and the span L formed by the polyester filament B is relatively large, so that the mixed yarn has excellent bulkiness; There is a difference in boiling water shrinkage rate, so that after the polyester composite blended yarn is treated with boiling water, the difference in the length of the polyester filaments A and B becomes larger, the loop structure becomes further higher (the ratio of H/L increases), and the fabric's The bulkiness will also be further improved. In addition, the interlacing strength of the mixed fiber yarn of the present invention is relatively large, which can ensure that the yarn still has a good package unwinding property under the condition of a high loop structure (high H/L), thereby Ensure that the yarn has good weaving properties.
附图说明Description of drawings
图1为本发明复合混纤纱的示意图,H表示丝圈高度,L表示丝圈跨度。Fig. 1 is a schematic diagram of the composite mixed fiber yarn of the present invention, where H represents the height of the loop, and L represents the span of the loop.
具体实施方式Detailed ways
本发明的聚酯复合混纤纱由两种聚酯长丝A、B组成,且聚酯长丝B在聚酯长丝A外形成丝圈。所形成的丝圈的高度H与丝圈在聚酯长丝A上的跨度L的比值H/L的大小受聚酯长丝A和聚酯长丝B之间的丝长差的影响。所述聚酯长丝A和聚酯长丝B的丝长差小,形成的丝圈就矮,H/L的值小;聚酯长丝A和聚酯长丝B的丝长差大,能够形成高丝圈,H/L的值就大。但是,当聚酯长丝A和聚酯长丝B的丝长差小于2%时,此时两种纱线基本上呈平行排列,丝圈极矮,导致最终在织物上体现的蓬松性较差;当聚酯长丝A和聚酯长丝B的丝长差大于30%时,鞘纱大量环绕在芯纱周围,并呈拱起露出状态,丝圈结构过高,稳定性较差,且过高的丝圈也会导致纱线的卷装退绕性变差,造成后续织造过程中布面上产生疵点,严重时造成断丝。本发明优选所述聚酯复合混纤纱中聚酯长丝A和聚酯长丝B之间的丝长差为4~28%,更优选10~28%,最优选14~24%。The polyester composite mixed fiber yarn of the present invention is composed of two kinds of polyester filaments A and B, and the polyester filament B forms a loop outside the polyester filament A. The size of the ratio H/L of the height H of the loops formed to the span L of the loops on the polyester filament A is influenced by the difference in yarn length between the polyester filament A and the polyester filament B. The difference between the lengths of the polyester filament A and the polyester filament B is small, the resulting loop is short, and the value of H/L is small; the difference between the lengths of the polyester filament A and the polyester filament B is large, If a high wire circle can be formed, the value of H/L is large. However, when the difference in the length of the polyester filament A and the polyester filament B is less than 2%, the two yarns are basically arranged in parallel at this time, and the loops are extremely short, resulting in a higher bulkiness on the fabric. Poor; when the difference in the length of polyester filament A and polyester filament B is greater than 30%, a large number of sheath yarns surround the core yarn and are arched and exposed, the loop structure is too high, and the stability is poor. In addition, too high wire loops will also lead to poor unwinding of the yarn package, resulting in defects on the cloth surface during the subsequent weaving process, and in severe cases, wire breakage. In the present invention, it is preferred that the difference in filament length between polyester filament A and polyester filament B in the polyester composite mixed yarn is 4-28%, more preferably 10-28%, and most preferably 14-24%.
除聚酯长丝A和聚酯长丝B的丝长差外,复合混纤纱的交络数对混纤纱中聚酯长丝B形成的丝圈高矮及复合混纤纱的蓬松也会产生影响。当交络个数太少时,丝圈在芯纱上的跨度L值显著增大,且丝圈高度H也会降低,从而导致H/L值显著降低,因此最后在织物上体现出好的蓬松性效果较差。本发明优选复合混纤纱的交络数在100个/m以上,更优选120个/m以上。In addition to the difference in the length of polyester filament A and polyester filament B, the number of interlaces of the composite blended yarn will also affect the height of the loop formed by polyester filament B in the blended yarn and the bulkiness of the composite blended yarn. make an impact. When the number of interlaces is too small, the span L value of the loop on the core yarn will increase significantly, and the loop height H will also decrease, resulting in a significant decrease in the H/L value, so the fabric finally shows good fluffy. Sexual effects are poor. In the present invention, the number of entanglements of the composite mixed fiber yarn is preferably 100 pieces/m or more, more preferably 120 pieces/m or more.
所述混纤纱的交络强度对其卷装退绕性也有较大的影响。当混纤纱的交络强度较弱时,纱线上的丝圈在张力(如织造张力)的作用下容易被解开,导致织造通过性变差,造成断丝。因此,为了保证纱线在较高的丝圈条件下也能顺利织造,即保证混纤纱的蓬松性的情况下也不影响其卷装退绕性,优选所述混纤纱的交络强度在80.0%以上。The interlacing strength of the mixed fiber yarn also has a great influence on the unwinding property of the package. When the interlacing strength of the mixed fiber yarn is weak, the loops on the yarn are easily unraveled under the action of tension (such as weaving tension), resulting in poor weaving passability and wire breakage. Therefore, in order to ensure that the yarn can be weaved smoothly even under the condition of higher loops, that is, to ensure the bulkiness of the mixed fiber yarn without affecting the unwinding property of the package, the interlacing strength of the mixed fiber yarn is preferably above 80.0%.
在综合丝长差和交络数对丝圈高矮以及蓬松性影响的基础上,本发明优选所述丝圈高度H与丝圈在聚酯长丝A上的跨度L的比值H/L为0.06~0.35。当H/L太小时,复合混纤纱的蓬松性差,所得织物表面紧实,手感不好;当H/L太大时,丝圈结构过高,蓬松稳定性较差,且即使混纤纱的交络强度达到100%其卷装退绕性也较差。本发明所述丝圈的高度H与丝圈在聚酯长丝A上的跨度L的比值H/L更优选0.10~0.30。On the basis of the comprehensive effect of the difference in the length of the filament and the number of interlaces on the height and bulkiness of the loop, the preferred ratio H/L of the loop height H to the span L of the loop on the polyester filament A in the present invention is 0.06 ~0.35. When the H/L is too small, the bulkiness of the composite blended yarn is poor, the surface of the obtained fabric is firm, and the hand feel is not good; when the H/L is too large, the loop structure is too high, and the bulky stability is poor, and even if the blended yarn is The interlacing strength reaches 100%, and the unwinding of the package is also poor. The ratio H/L of the height H of the loop in the present invention to the span L of the loop on the polyester filament A is more preferably 0.10 to 0.30.
本发明的聚酯复合混纤纱除了具有良好的蓬松性之外,更主要的,在于所述 聚酯复合混纤纱经过沸水处理后,所述聚酯长丝A和聚酯长丝B的丝长差与处理前相比提高15~200%。即,热水处理后的本发明聚酯复合混纤纱的蓬松性优于热水处理前的聚酯复合混纤纱。In addition to good bulkiness, the polyester composite mixed fiber yarn of the present invention is more important in that after the polyester composite mixed fiber yarn is treated with boiling water, the polyester filament A and the polyester filament B have The difference in filament length was increased by 15-200% compared with that before treatment. That is, the bulkiness of the polyester composite mixed fiber yarn of the present invention after the hot water treatment is better than that of the polyester composite mixed fiber yarn before the hot water treatment.
这是因为本发明的聚酯长丝A的沸水收缩率大于聚酯长丝B的沸水收缩率,且它们的差值在3%以上。聚酯纤维经过沸水处理后都会产生收缩,聚酯纤维的沸水收缩率越大,沸水处理后产生的收缩也越大。本发明通过限定聚酯预取向丝B在热板上的内牵伸温度和加工速度,降低了聚酯长丝B的沸水收缩率,使得聚酯长丝A和聚酯长丝B之间的沸水收缩率差增大,则沸水处理后由聚酯长丝A的收缩所带来的附加的丝长差就越大,从而使得最终织物上的丝长差进一步增大,织物的蓬松性也进一步提高。两种长丝的沸水收缩率差在3%以上,最终复合丝的丝长差可提高15~200%。本发明优选两种长丝的沸水收缩率差在7%以上。This is because the boiling water shrinkage rate of the polyester filament A of the present invention is greater than the boiling water shrinkage rate of the polyester filament B, and the difference is 3% or more. Polyester fibers will shrink after boiling water treatment. The greater the boiling water shrinkage rate of polyester fibers, the greater the shrinkage after boiling water treatment. The present invention reduces the boiling water shrinkage rate of the polyester filament B by limiting the internal drawing temperature and processing speed of the polyester pre-oriented filament B on the hot plate, so that the difference between the polyester filament A and the polyester filament B is reduced. The difference in shrinkage rate in boiling water increases, and the additional difference in filament length caused by the shrinkage of polyester filament A after boiling water treatment will be larger, so that the difference in filament length on the final fabric will further increase, and the bulkiness of the fabric will also increase. Further improve. The difference in the boiling water shrinkage rate of the two filaments is more than 3%, and the difference in the length of the final composite filament can be increased by 15-200%. In the present invention, it is preferred that the difference in the boiling water shrinkage of the two filaments is more than 7%.
为了进一步提高聚酯长丝A和聚酯长丝B之间的沸水收缩率差,本发明优选聚酯长丝B的沸水收缩率在10%以内。In order to further increase the difference in the boiling water shrinkage rate between the polyester filament A and the polyester filament B, it is preferred in the present invention that the boiling water shrinkage rate of the polyester filament B is within 10%.
另外由于聚酯长丝B以丝圈的形式包绕在聚酯牵伸丝A的外部,因此其单丝纤度的大小对最终织物的手感和蓬松性也有影响。单丝纤度越低,聚酯复合混纤纱的手感及蓬松性也越好,但过低的单丝纤度会增加纺丝和丝加工的困难性。本发明优选聚酯长丝B的单丝纤度为0.5~1.2dtex。In addition, since the polyester filament B is wrapped around the outside of the polyester drafting yarn A in the form of loops, the size of its monofilament fineness also affects the feel and bulkiness of the final fabric. The lower the monofilament fineness, the better the hand and bulkiness of the polyester composite blended yarn, but too low monofilament fineness will increase the difficulty of spinning and silk processing. In the present invention, the monofilament fineness of the polyester filament B is preferably 0.5 to 1.2 dtex.
所述聚酯长丝A和聚酯长丝B可以为普通聚合物纤维,为了获得特定的功能,也可以选择异形纤维。比如,为了赋予聚酯复合混纤纱弹性,所述聚酯长丝A可以优选双组份并列聚酯长丝,更具体的可以优选PET/PET、PBT/PET或PTT/PET并列聚酯长丝;为了赋予聚酯复合混纤纱染色后的自然浓淡条纹感效果,所述聚酯长丝B可以优选在长度方向上具有交替排列的多个粗纤段和细纤段的聚酯长丝,且粗纤段和细纤段的直径之比越大,经染色后的自然浓淡条纹感效果越好,因此所述纤段和细纤段的直径之比更优选在1.13以上。The polyester filament A and the polyester filament B can be ordinary polymer fibers, and special-shaped fibers can also be selected in order to obtain specific functions. For example, in order to impart elasticity to the polyester composite blended yarn, the polyester filament A may preferably be a bi-component side-by-side polyester filament, and more specifically, it may preferably be a PET/PET, PBT/PET or PTT/PET side-by-side polyester filament. In order to give the polyester composite mixed fiber yarn a natural shaded stripe effect after dyeing, the polyester filament B may preferably have a polyester filament with a plurality of thick fiber segments and fine fiber segments alternately arranged in the length direction. , and the larger the ratio of the diameters of the thick fiber segment and the thin fiber segment, the better the natural shade stripe effect after dyeing, so the ratio of the diameter of the fiber segment to the fine fiber segment is more preferably 1.13 or more.
本发明还公开了上述聚酯复合混纤纱的制造方法,具体为:首先将聚酯预取向丝B先通过热辊进行外牵伸,然后再经热板内牵伸、假捻后与聚酯牵伸丝A在交络器内经空气网络复合,最后再经卷取得到。其中聚酯预取向丝B的超喂率为3~32%,在热板上的内牵伸温度为160~220℃,加工速度为400~700m/min。The invention also discloses a manufacturing method of the above polyester composite mixed fiber yarn, which is specifically as follows: firstly, the polyester pre-oriented yarn B is firstly drawn by a hot roller, and then drawn in a hot plate, false twisted, and then mixed with a polymer The ester drawn yarn A is compounded by the air network in the interlacer, and finally obtained by rolling. The overfeed rate of polyester pre-oriented yarn B is 3-32%, the internal drawing temperature on the hot plate is 160-220°C, and the processing speed is 400-700m/min.
由于受加工方法和设备自身限制,聚酯牵伸丝A的超喂率变化范围较小,一 般在1~3%的范围内,故复合混纤纱的丝长差主要取决于聚酯预取向丝B的超喂率。在加工速度400~700m/min的条件下,当聚酯长丝B的超喂率小于3%时,此时复合混纤纱的丝长差小于2%,所得聚酯复合混纤纱的蓬松性差;而当聚酯长丝B超喂率大于32%时,一方面加工稳定性下降,断丝率上升,另一方面此时复合混纤纱的丝长差大于30%,丝圈结构过高,蓬松稳定性差,且纱线的卷装退绕性也变差,后续织造过程中的通过性较差。因此为了获得性能稳定的复合混纤纱,优选鞘丝聚酯预取向丝B的超喂率为5~30%,更优选12~30%。Due to the limitation of the processing method and the equipment itself, the variation range of the overfeed rate of the polyester draft yarn A is small, generally in the range of 1 to 3%, so the difference in the length of the composite blended yarn mainly depends on the polyester pre-orientation Overfeed rate of wire B. Under the condition of processing speed of 400~700m/min, when the overfeed rate of polyester filament B is less than 3%, and the difference in silk length of the composite blended yarn is less than 2%, the fluffy polyester composite blended yarn is obtained. When the overfeed rate of polyester filament B is greater than 32%, on the one hand, the processing stability decreases, and the yarn breakage rate increases. High, the bulk stability is poor, and the unwinding of the yarn package is also poor, and the passability in the subsequent weaving process is poor. Therefore, in order to obtain the composite mixed fiber yarn with stable performance, the overfeed rate of the sheath polyester pre-oriented yarn B is preferably 5-30%, more preferably 12-30%.
当加工速度小于400m/min,交络压力太小,此时复合混纤纱的交络个数太少,从而导致丝圈在芯丝上的跨度L值显著变大,而且丝圈的高度H也随之降低,故使H/L的比值显著降低。此时虽然通过超喂率差保证了复合混纤纱的丝长差,但由于丝圈结构过矮,因此最终在织物上体现的蓬松性较弱。而当加工速度超过700m/min,断丝率增加,加工稳定性显著下降。所述加工速度优选400~600m/min。When the processing speed is less than 400m/min, the entanglement pressure is too small, and the number of entanglements of the composite mixed fiber yarn is too small, resulting in a significant increase in the span L value of the loop on the core wire, and the height H of the loop It also decreases, so the H/L ratio is significantly reduced. At this time, although the difference in the yarn length of the composite blended yarn is ensured by the difference of the overfeed rate, the bulkiness of the fabric is finally reflected because the loop structure is too short. When the processing speed exceeds 700m/min, the wire breakage rate increases and the processing stability decreases significantly. The processing speed is preferably 400-600 m/min.
另一方面,为保证纱线的交络个数和交络强度,本发明所采用的空气交络压力应不低于0.05MPa,优选0.10~0.50MPa,但过大的交络压力一方面会造成资源浪费,另一方面可能造成纱线交络强度过大,从而导致布面经染色后出现染斑问题。因此,更优选0.10~0.40MPa。On the other hand, in order to ensure the interlacing number and interlacing strength of the yarn, the air interlacing pressure used in the present invention should not be lower than 0.05MPa, preferably 0.10-0.50MPa, but excessive interlacing pressure will cause It will cause waste of resources, and on the other hand, it may cause the yarn interlacing strength to be too large, which will lead to the problem of dye spots after the cloth is dyed. Therefore, it is more preferably 0.10 to 0.40 MPa.
热板内牵伸温度对聚酯长丝B的沸水收缩率和纤维的柔软蓬松性有较大的影响。一般热板温度越高,其沸水收率越小,且纤维越柔软蓬松。而当热板温度低于160℃,由于其沸水收缩率过大,因此它与聚酯长丝A的沸水收缩率差过小,复合丝经沸水处理后的丝长差提高较小。而但当热板温度超过220℃,纱线毛羽增多,强度明显下降。所述热板内牵伸温度优选180~220℃。The drawing temperature in the hot plate has a great influence on the boiling water shrinkage rate of polyester filament B and the softness and bulkiness of the fiber. Generally, the higher the temperature of the hot plate, the lower the yield of boiling water, and the softer and more fluffy the fibers are. When the temperature of the hot plate is lower than 160°C, the difference in the boiling water shrinkage rate between it and the polyester filament A is too small due to its excessive boiling water shrinkage rate, and the increase in the length difference of the composite filament after boiling water treatment is small. However, when the temperature of the hot plate exceeds 220°C, the yarn hairiness increases and the strength decreases significantly. The drawing temperature in the hot plate is preferably 180-220°C.
所述聚酯预取向丝B的外牵伸倍率为其S-S曲线上的自然拉伸区域终点处的伸度×(10~120%)+1。当聚酯预取向丝B的外牵伸倍率过小时,形成的粗细段的直径差别较小,浓淡条纹较弱。当聚酯预取向丝B的外牵伸倍率过大时,丝又被完全拉伸了,形成的粗细段结构被均匀化了,浓淡条纹感同样也较弱。因此为了获得令人满意的自然浓淡条纹感,优选聚酯预取向丝B的外牵伸倍率为其S-S曲线上的自然拉伸区域终点伸度×(20~100%)+1。The outer draft ratio of the polyester pre-oriented yarn B is the elongation at the end point of the natural stretching region on its S-S curve*(10-120%)+1. When the outer draft ratio of the polyester pre-oriented yarn B is too small, the diameter difference of the formed thick and thin segments is small, and the dark and light stripes are weak. When the external drafting ratio of the polyester pre-oriented yarn B is too large, the yarn is completely stretched again, and the formed thickness segment structure is homogenized, and the feeling of dark and light stripes is also weak. Therefore, in order to obtain a satisfactory natural shading streak feeling, it is preferable that the outer draft ratio of the polyester pre-oriented yarn B is its natural stretching region end stretch on the S-S curve×(20-100%)+1.
本发明通过控制聚酯长丝A和聚酯长丝B之间的沸水收缩率差在3%以上,使得复合混纤纱经过98℃沸水处理30min后,聚酯长丝A和聚酯长丝B的丝长 差变大,复合混纤纱的蓬松度得到进一步提高。同时,本发明通过控制混纤纱的交络强度和丝圈H/L的比值,使其卷装退绕性良好。In the present invention, the difference in boiling water shrinkage between polyester filament A and polyester filament B is controlled to be more than 3%, so that after the composite blended yarn is treated with boiling water at 98° C. for 30 minutes, the polyester filament A and the polyester filament The difference in yarn length of B becomes larger, and the bulkiness of the composite mixed fiber yarn is further improved. At the same time, by controlling the interlacing strength of the mixed fiber yarn and the H/L ratio of the loops, the present invention makes the package unwindability good.
本发明涉及的测试方法如下:The test method involved in the present invention is as follows:
1.纤维粗细节比1. Fiber thickness to detail ratio
从聚酯长丝B中抽取一定长度的单纤维置于电子显微镜下分别量取该纤维上10处粗纤段和10处细纤段的直径,然后利用如下公式计算出纤维粗细节比。Extract a certain length of single fiber from polyester filament B and place it under an electron microscope to measure the diameters of 10 thick fiber segments and 10 thin fiber segments on the fiber, and then calculate the fiber thickness to detail ratio using the following formula.
Figure PCTCN2021123716-appb-000001
Figure PCTCN2021123716-appb-000001
2.丝长差2. Silk length difference
取一定长度的复合纱线,然后小心分别抽出其中数根芯纱单纤维和鞘纱单纤维;分别测量芯纱单纤维的长度L 1(取10根单纤维长度的平均值)和鞘纱单纤维的长度L 2(取10根单纤维长度的平均值)。利用如下公式计算出丝长差1。 Take a certain length of composite yarn, and then carefully extract several core yarn single fibers and sheath yarn single fibers; Fiber length L 2 (average of 10 single fiber lengths). Calculate the difference in filament length 1 using the following formula.
Figure PCTCN2021123716-appb-000002
Figure PCTCN2021123716-appb-000002
将上述测试过丝长差的芯纱和鞘纱放入98℃沸水处理30min后,再根据上述方法测试两者的丝长差2。After the core yarn and sheath yarn tested for the difference in filament length were placed in boiling water at 98°C for 30 min, the difference in filament length 2 was tested according to the above method.
Figure PCTCN2021123716-appb-000003
Figure PCTCN2021123716-appb-000003
则沸水处理后聚酯长丝A和聚酯长丝B的丝长差与处理前相比提高的比例为。Then, the ratio of the difference in the length of the polyester filament A and the polyester filament B after the boiling water treatment is increased compared with that before the treatment.
Figure PCTCN2021123716-appb-000004
Figure PCTCN2021123716-appb-000004
3.沸水收缩率及沸水收缩率差3. Boiling water shrinkage and boiling water shrinkage difference
取一定长度的复合混纤纱,通过退捻解捻的方法将聚酯长丝A和聚酯长丝B分离开来。然后按照如下方法分别测试聚酯长丝A和聚酯长丝B的沸水收缩率:将分离开来的聚酯长丝在施加0.1g/D的张力条件下在纱线上标记一定长度(50cm),接着将纱线置于98℃沸水条件下让其自由收缩30min,随后将纱线在温度20℃,相对湿度65%条件下,自然晾干后,在施加0.1g/D的张力条件下测试纱线标记处的长度L 1,并利用如下公式计算纱线的沸水收缩率,实验结果取三次测试的平均值。 Take a certain length of composite mixed fiber yarn, and separate polyester filament A and polyester filament B by untwisting and untwisting. Then test the boiling water shrinkage of polyester filament A and polyester filament B respectively as follows: mark the separated polyester filament with a certain length (50cm) on the yarn under the condition of applying 0.1g/D tension. ), then put the yarn under the condition of boiling water at 98°C to allow it to shrink freely for 30min, then the yarn was dried naturally at a temperature of 20°C and a relative humidity of 65%, under a tension condition of 0.1g/D. The length L 1 at the yarn mark was measured, and the boiling water shrinkage rate of the yarn was calculated using the following formula, and the experimental result was taken as the average value of three tests.
Figure PCTCN2021123716-appb-000005
Figure PCTCN2021123716-appb-000005
聚酯长丝A和聚酯长丝B的沸水收缩率差为The difference in boiling water shrinkage between polyester filament A and polyester filament B is
沸水收缩率差(%)=沸水收缩率A-沸水收缩率B;Boiling water shrinkage difference (%)=boiling water shrinkage A-boiling water shrinkage B;
4.单丝纤度4. Monofilament fineness
根据标准JISL1015:2010进行测试。Tested according to standard JISL1015:2010.
5.丝圈高度H、其在芯丝上的跨度L的比值H/L。5. The ratio H/L of the height H of the wire loop and its span L on the core wire.
利用DT-105(F/S)毛羽计数器来测定纱线的丝圈高度。首先将仪器测试模式设置为S模式,测定速度50m/min,测试时间1min。逐渐调试纱线毛羽测试刻度值,待检测信号稳定时,此时毛羽测试刻度值即为丝圈的高度h(mm)。则鞘丝圈高度H与其在芯丝上的跨度L的比值H/L利用如下公式计算,实验结果取三次测试的平均值,其中N(个/m)为纱线的交络数。The loop height of the yarn was measured using a DT-105 (F/S) hairiness counter. First, set the test mode of the instrument to S mode, the measurement speed is 50m/min, and the test time is 1min. Gradually adjust the yarn hairiness test scale value. When the detection signal is stable, the hairiness test scale value at this time is the height h (mm) of the wire loop. Then the ratio H/L of the height H of the sheath loop to the span L on the core wire is calculated by the following formula, and the experimental result is the average value of three tests, where N (pieces/m) is the number of interlaces of the yarn.
Figure PCTCN2021123716-appb-000006
Figure PCTCN2021123716-appb-000006
6.交络数和交络强度6. Number of ties and strength of ties
交络数参照标准FZ/T 50001-2005进行测试。The number of crossovers is tested with reference to the standard FZ/T 50001-2005.
交络强度采用如下方式进行测试。首先对纱线施加0.1cN/dtex的初始荷重,然后在纱线上标记一定长度通常为1m,然后测定1m长内纱线的交络数,记为N1。接着对此纱线施加1cN/dtex的定荷重,保持30s后去除,然后再次测定纱线的交络数记为N2。并按如下公式计算纱线的交络强度,实验结果取三次测试的平均值。The cross-linking strength was tested in the following manner. First, apply an initial load of 0.1cN/dtex to the yarn, then mark a certain length on the yarn, usually 1m, and then measure the number of interlaces of the yarn within 1m, which is recorded as N1. Then, apply a constant load of 1 cN/dtex to the yarn, keep it for 30 s, then remove it, and then measure the number of entanglements of the yarn again and record it as N2. And calculate the interlacing strength of the yarn according to the following formula, and take the average value of three tests as the experimental result.
Figure PCTCN2021123716-appb-000007
Figure PCTCN2021123716-appb-000007
7.卷装退绕性评价7. Evaluation of package unwinding
将纱线用作纬纱在喷气织机上进行打纬评价,其中织机车速:600rpm,织物组织:平纹组织,经×纬密度:136×125本/inc。在排除其他异常情况的条件下,若因退绕而出现3次及以上的断丝停机现象则说明其存在退绕性不良的问题,记为×;若因退绕而出现1~2次断丝停机现象则说明其退绕性尚可,记为△;若织造过程顺利未出现断丝停机现象则说明其退绕性良好,记为〇。The yarn was used as a weft yarn for beating-up evaluation on an air-jet loom, wherein the loom speed: 600 rpm, the fabric structure: plain weave, and the warp×weft density: 136×125 pcs/inc. Under the condition of excluding other abnormal conditions, if there are 3 or more times of wire breakage due to unwinding, it means that there is a problem of poor unwinding, which is marked as ×; if there are 1 or 2 breaks due to unwinding The phenomenon of silk stoppage indicates that the unwinding property is acceptable, which is marked as △; if the weaving process goes smoothly without the phenomenon of broken silk stoppage, it means that the unwinding property is good, which is marked as 0.
8.织物浓淡条纹感、手感及弹性评价8. Evaluation of the texture, texture and elasticity of fabrics
将此复合纱线用作纬纱制成平纹织物,经精炼、松弛、中间定型、染色、定型后采用JIS L 1096 A法标准测试织物的纬向弹性。This composite yarn was used as a weft yarn to make a plain weave fabric. After refining, relaxing, intermediate setting, dyeing, and setting, the weft elasticity of the fabric was tested by JIS L 1096 A method standard.
将染色后的织物给予本领域经验者(10人)进行布面外观和手感评价,若所有人都认为布面浓淡条纹感丰富,则判定为〇,若有6~9人认为布面浓淡条纹感丰富,则判定为△,若小于6人认为布面浓淡条纹感丰富,则判定为×。织物的手感(蓬松性)也按此法进行评价。The dyed fabrics were given to those experienced in the field (10 people) to evaluate the appearance and hand feel of the fabric. If everyone thought that the cloth surface had rich shades of stripes, it was judged as 0, and if 6 to 9 people thought that the cloth surface had shades of stripes If the feeling is rich, it is judged as △, and if less than 6 people think that the cloth surface has a rich sense of shades and stripes, it is judged as ×. The hand (bulkiness) of the fabric was also evaluated in this way.
下面结合实施例对本发明做更详细的说明,但实施例并非是对本发明的限制。The present invention will be described in more detail below with reference to the examples, but the examples are not intended to limit the present invention.
实施例1Example 1
将聚酯预取向丝B先通过热辊进行外牵伸,外牵伸倍率为S-S曲线上平台区终点处伸度42%×70%+1,然后经热板内牵伸、假捻,内牵伸温度为200℃,加工速度为500m/min。再将假捻后的聚酯预取向丝B在3%的超喂率下,通过后插入法喂入的PBT/PET双组份并列聚酯牵伸丝A在交络器内经空气网络复合,交络压力为0.30MPa,接着经上油卷取得到复合混纤纱,具体性能见表1。The polyester pre-oriented yarn B is firstly drawn through the hot roller, and the external drawing ratio is 42%×70%+1 at the end point of the platform area on the S-S curve. The drawing temperature was 200°C, and the processing speed was 500 m/min. Then, under the overfeed rate of 3%, the polyester pre-oriented yarn B after false twisting, the PBT/PET bi-component side-by-side polyester draft yarn A fed by the post-insertion method is compounded in the interlacer through the air network, The interlacing pressure is 0.30MPa, and then the composite mixed fiber yarn is obtained by oiling the coil. The specific properties are shown in Table 1.
实施例2~5Examples 2 to 5
变更聚酯预取向丝B的超喂率,其他同实施例1,制得复合混纤纱,具体性能见表1。The overfeed rate of the polyester pre-oriented yarn B was changed, and the others were the same as in Example 1, and the composite mixed fiber yarn was obtained. The specific properties are shown in Table 1.
实施例6~8Examples 6 to 8
变更聚酯预取向丝B内牵伸的热板温度,其他同实施例4,制得复合混纤纱,具体性能见表1。The temperature of the hot plate drawn in the polyester pre-oriented yarn B was changed, and the others were the same as those in Example 4, and the composite mixed fiber yarn was obtained. The specific properties are shown in Table 1.
实施例9~10Examples 9 to 10
变更聚酯长丝B的单丝纤度,其他同实施例4,制得复合混纤纱,具体性能见表1。The monofilament fineness of the polyester filament B was changed, and the others were the same as those in Example 4, and the composite mixed fiber yarn was prepared. The specific properties are shown in Table 1.
实施例11~13Examples 11 to 13
变更聚酯预取向丝B内牵伸的加工速度,其他同实施例4,制得复合混纤纱,具体性能见表2。The processing speed of the inner drafting of the polyester pre-oriented yarn B was changed, and the others were the same as in Example 4, and the composite mixed fiber yarn was obtained.
实施例14~16Examples 14 to 16
变更交络压力,其他同实施例4,制得复合混纤纱,具体性能见表2。Change the entanglement pressure, others are the same as in Example 4, and the composite mixed fiber yarn is obtained, and the specific properties are shown in Table 2.
实施例17Example 17
变更聚酯预取向丝B的外牵伸倍率,其他同实施例4,制得复合混纤纱,具体性能见表2。The external drafting ratio of polyester pre-oriented yarn B was changed, and the others were the same as in Example 4, and the composite mixed fiber yarn was obtained. The specific properties are shown in Table 2.
实施例18~19Examples 18 to 19
变更聚酯长丝A的并列成分组合,其他同实施例8,制得复合混纤纱,具体性能见表2。The side-by-side composition of polyester filament A was changed, and the others were the same as those in Example 8, and the composite mixed fiber yarn was prepared. The specific properties are shown in Table 2.
实施例20~21Examples 20 to 21
变更聚酯预取向丝B的超喂率,其他同实施例16,制得复合混纤纱,具体性能见表2。The overfeed rate of the polyester pre-oriented yarn B was changed, and the others were the same as in Example 16, and the composite mixed fiber yarn was obtained. The specific properties are shown in Table 2.
比较例1Comparative Example 1
变更聚酯预取向丝B的超喂率为2%,其他同实施例1,制得复合混纤纱,具体性能见表3。The overfeed rate of the polyester pre-oriented yarn B was changed to 2%, and the others were the same as in Example 1, and the composite mixed fiber yarn was obtained. The specific properties are shown in Table 3.
由于聚酯预取向丝B的超喂率太小,导致复合混纤纱的丝长差小,所得织物的手感及蓬松效果差。Because the overfeed rate of the polyester pre-oriented yarn B is too small, the yarn length difference of the composite mixed fiber yarn is small, and the resulting fabric has poor hand feeling and fluffy effect.
比较例2Comparative Example 2
变更聚酯预取向丝B的超喂率为34%,其他同实施例1,制得复合混纤纱,具体性能见表3。The overfeed rate of the polyester pre-oriented yarn B was changed to 34%, and the others were the same as in Example 1, and the composite mixed fiber yarn was obtained. The specific properties are shown in Table 3.
由于聚酯预取向丝B的超喂率太大,导致复合混纤纱的丝圈过高,不利于后期织造。Because the overfeed rate of the polyester pre-oriented yarn B is too high, the loop of the composite mixed fiber yarn is too high, which is not conducive to the later weaving.
比较例3Comparative Example 3
变更聚酯预取向丝B内牵伸的热板温度为150℃,其他同实施例4,制得复合混纤纱,具体性能见表3。The temperature of the hot plate drawn in the polyester pre-oriented yarn B was changed to 150°C, and the others were the same as those in Example 4, and the composite mixed fiber yarn was prepared. The specific properties are shown in Table 3.
由于聚酯预取向丝B内牵伸的热板温度太低,导致聚酯长丝A和聚酯长丝B的沸水收缩率差小,沸水处理后两者的丝长差基本没有提高,织物热处理后蓬松性得不到提高。Because the temperature of the hot plate drawn in the polyester pre-oriented yarn B is too low, the difference in the boiling water shrinkage rate of the polyester filament A and the polyester filament B is small. The bulkiness is not improved after heat treatment.
比较例4Comparative Example 4
变更聚酯预取向丝B内牵伸的热板温度为230℃,其他同实施例4,制得复合混纤纱,具体性能见表3。The temperature of the hot plate drawn in the polyester pre-oriented yarn B was changed to 230°C, and the others were the same as those in Example 4, and the composite mixed fiber yarn was prepared. The specific properties are shown in Table 3.
由于聚酯预取向丝B内牵伸的热板温度太高,导致加工过程中断丝严重,无法正常生产。Because the temperature of the hot plate drawn in the polyester pre-oriented yarn B is too high, the yarn is seriously interrupted during the processing, and normal production cannot be performed.
比较例5Comparative Example 5
变更聚酯预取向丝B内牵伸的加工速度为300m/min,其他同实施例4,制得复合混纤纱,具体性能见表3。Change the processing speed of the polyester pre-oriented yarn B to be 300m/min, and the other is the same as in Example 4, to prepare the composite mixed fiber yarn. The specific properties are shown in Table 3.
由于聚酯预取向丝B内牵伸的加工速度太低,导致复合混纤纱的交络数目小,H/L的值低,所得织物的蓬松性不好。Because the processing speed of the polyester pre-oriented yarn B is too low, the number of entanglements of the composite mixed fiber yarn is small, the value of H/L is low, and the bulkiness of the obtained fabric is not good.
比较例6Comparative Example 6
变更聚酯预取向丝B内牵伸的加工速度为750m/min,其他同实施例4,制得复合混纤纱,具体性能见表3。Change the processing speed of the polyester pre-oriented yarn B to be 750m/min, and the other is the same as in Example 4, to prepare the composite mixed fiber yarn. The specific properties are shown in Table 3.
由于聚酯预取向丝B内牵伸的加工速度太高,加工稳定性差,无法正常生产。Because the processing speed of the polyester pre-oriented yarn B is too high and the processing stability is poor, it cannot be produced normally.
Figure PCTCN2021123716-appb-000008
Figure PCTCN2021123716-appb-000008
Figure PCTCN2021123716-appb-000009
Figure PCTCN2021123716-appb-000009
Figure PCTCN2021123716-appb-000010
Figure PCTCN2021123716-appb-000010

Claims (11)

  1. 聚酯复合混纤纱,由聚酯长丝A和聚酯长丝B组成,且聚酯长丝B在聚酯长丝A外形成丝圈;其特征在于:所述聚酯长丝A和聚酯长丝B之间的丝长差为2~30%,所述聚酯长丝A的沸水收缩率比所述聚酯长丝B大3%以上;所述聚酯复合混纤纱经98℃沸水处理30min后,所述聚酯长丝A和聚酯长丝B的丝长差与处理前相比提高15~200%。The polyester composite mixed fiber yarn is composed of polyester filament A and polyester filament B, and the polyester filament B forms a loop outside the polyester filament A; it is characterized in that: the polyester filament A and The yarn length difference between the polyester filaments B is 2-30%, and the boiling water shrinkage of the polyester filaments A is more than 3% greater than that of the polyester filaments B; After being treated with boiling water at 98° C. for 30 minutes, the difference in the length of the polyester filament A and the polyester filament B was increased by 15-200% compared with that before the treatment.
  2. 根据权利要求1所述的聚酯复合混线纱,其特征在于:所述聚酯长丝A和聚酯长丝B的丝长差为10~30%。The polyester composite blended yarn according to claim 1, wherein the difference in the length of the polyester filament A and the polyester filament B is 10-30%.
  3. 根据权利要求1所述的聚酯复合混纤纱,其特征在于:所述聚酯长丝B的沸水收缩率在10%以下。The polyester composite mixed fiber yarn according to claim 1, wherein the boiling water shrinkage rate of the polyester filament B is below 10%.
  4. 根据权利要求1所述的聚酯复合混纤纱,其特征在于:所述复合混纤纱的交络数在100个/m以上,交络强度在80.0%以上。The polyester composite mixed fiber yarn according to claim 1 is characterized in that: the number of entanglements of the composite mixed fiber yarn is more than 100 pieces/m, and the entanglement strength is more than 80.0%.
  5. 根据权利要求1~3任一项所述聚酯复合混纤纱,其特征在于:所述丝圈的高度H与丝圈在聚酯长丝A上的跨度L的比值H/L为0.06~0.35。The polyester composite blended yarn according to any one of claims 1 to 3, wherein the ratio H/L of the height H of the loop to the span L of the loop on the polyester filament A is 0.06~ 0.35.
  6. 根据权利要求1或2所述的聚酯复合混纤纱,其特征在于:所述聚酯长丝B的单丝纤度为0.5~1.2dtex。The polyester composite mixed fiber yarn according to claim 1 or 2, wherein the monofilament fineness of the polyester filament B is 0.5-1.2 dtex.
  7. 根据权利要求1所述的聚酯复合混纤纱,其特征在于:所述聚酯长丝A为双组份并列聚酯长丝。The polyester composite mixed fiber yarn according to claim 1, wherein the polyester filament A is a bicomponent side-by-side polyester filament.
  8. 根据权利要求7所述的聚酯复合混纤纱,其特征在于:所述聚酯长丝A为PET/PET、PBT/PET或PTT/PET并列聚酯长丝。The polyester composite mixed fiber yarn according to claim 7, wherein the polyester filaments A are PET/PET, PBT/PET or PTT/PET side-by-side polyester filaments.
  9. 根据权利要求1所述的聚酯复合混纤纱,其特征在于:所述聚酯长丝B在长度方向上具有交替排列的多个粗纤段和细纤段,且粗纤段和细纤段的直径之比在1.13以上。The polyester composite mixed fiber yarn according to claim 1, wherein the polyester filament B has a plurality of thick fiber segments and thin fiber segments alternately arranged in the longitudinal direction, and the thick fiber segments and the thin fiber segments are arranged alternately in the longitudinal direction. The ratio of the diameters of the segments is above 1.13.
  10. 权利要求1所述聚酯复合混纤纱的制备方法,将聚酯预取向丝B先通过热辊进行外牵伸,然后再经热板内牵伸、假捻后与聚酯牵伸丝A在交络器内经空气网络复合,最后再经卷取得到复合混纤纱;其特征在于:所述聚酯预取向丝B的超喂率为3~32%,在热板上的内牵伸温度为160~220℃,加工速度400~700m/min。The preparation method of the polyester composite mixed fiber yarn according to claim 1, the polyester pre-oriented yarn B is firstly drawn through a hot roller, and then drawn inside a hot plate, false-twisted, and drawn with the polyester yarn A. It is compounded by the air network in the interlacer, and finally the composite mixed fiber yarn is obtained by rolling. The temperature is 160~220℃, and the processing speed is 400~700m/min.
  11. 根据权利要求10所述的聚酯复合混纤纱的制备方法,其特征在于:所述交络器内的空气压力为0.05~0.50MPa。The preparation method of polyester composite mixed fiber yarn according to claim 10, wherein the air pressure in the interlacer is 0.05-0.50MPa.
PCT/CN2021/123716 2020-10-15 2021-10-14 Polyester composite blended fiber yarn and preparation method therefor WO2022078422A1 (en)

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Citations (8)

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JP2000144541A (en) * 1998-11-05 2000-05-26 Toray Ind Inc Polyester combined filament yarn
JP2003278039A (en) * 2002-03-15 2003-10-02 Toray Ind Inc Polyester composite false twisted yarn
JP2007197864A (en) * 2006-01-26 2007-08-09 Toray Textile Inc Polyester combined filament yarn and woven/knitted fabric thereof
CN204023070U (en) * 2014-08-20 2014-12-17 东丽纤维研究所(中国)有限公司 A kind of cotton sense complex yarn and the textiles obtained by it
JP2015190074A (en) * 2014-03-28 2015-11-02 ユニチカトレーディング株式会社 Composite false-twisted yarn and woven or knitted fabric using the composite false-twisted yarn
CN109652887A (en) * 2018-12-19 2019-04-19 浙江恒澜科技有限公司 A kind of production method of double-colored imitative hair polyester fiber
CN110029419A (en) * 2018-01-11 2019-07-19 东丽纤维研究所(中国)有限公司 A kind of mixed fine false twist yarn of terylene, preparation method and its fabric

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1113392A (en) * 1993-08-06 1995-12-13 可乐丽股份有限公司 Polyester fiber
JP2000144541A (en) * 1998-11-05 2000-05-26 Toray Ind Inc Polyester combined filament yarn
JP2003278039A (en) * 2002-03-15 2003-10-02 Toray Ind Inc Polyester composite false twisted yarn
JP2007197864A (en) * 2006-01-26 2007-08-09 Toray Textile Inc Polyester combined filament yarn and woven/knitted fabric thereof
JP2015190074A (en) * 2014-03-28 2015-11-02 ユニチカトレーディング株式会社 Composite false-twisted yarn and woven or knitted fabric using the composite false-twisted yarn
CN204023070U (en) * 2014-08-20 2014-12-17 东丽纤维研究所(中国)有限公司 A kind of cotton sense complex yarn and the textiles obtained by it
CN110029419A (en) * 2018-01-11 2019-07-19 东丽纤维研究所(中国)有限公司 A kind of mixed fine false twist yarn of terylene, preparation method and its fabric
CN109652887A (en) * 2018-12-19 2019-04-19 浙江恒澜科技有限公司 A kind of production method of double-colored imitative hair polyester fiber

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