KR920010990B1 - Mass method of manufacturing different shrinkage complex yarn - Google Patents

Mass method of manufacturing different shrinkage complex yarn Download PDF

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KR920010990B1
KR920010990B1 KR1019900021597A KR900021597A KR920010990B1 KR 920010990 B1 KR920010990 B1 KR 920010990B1 KR 1019900021597 A KR1019900021597 A KR 1019900021597A KR 900021597 A KR900021597 A KR 900021597A KR 920010990 B1 KR920010990 B1 KR 920010990B1
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polyester
stretched
natural
ndr
group
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KR1019900021597A
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KR920012572A (en
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박창경
조성민
오원환
김영규
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주식회사 선경인더스트리
이승동
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    • DTEXTILES; PAPER
    • D02YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02GCRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/18Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by combining fibres, filaments, or yarns, having different shrinkage characteristics

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Abstract

The method comprises; doubling undrawn polyester fiber bundle (A) spun at a relatively low speed, that is spinning speed 1,000- 1,500 m/min, degree of orientation (ΔN) 6.0x103 - 20.0x103, natural draw ratio (NDR) 2.4-3.0, and another undrawn polyester fiber bundle (B) spun at a relatively high speed, that is spinning speed 1,800-2,200 n/min, ΔN 16.0x103 - 40.0x103, NDR 1.6-2.5 at the drawing creel (C), feeding doubled bundles through heat roller (4) and heat plate (5) of 100-200 deg.C in a way tht draw ratio satisfies simultaneously 0.6-1.2 per NDR of A and 0.9-1.4 per NDR of B, respectively and interlacing them with interlace number of more than 30 ea. per meter at the flwid treatment nozzle (7) placed between draw roller (6) and winder (8).

Description

이수축 혼섬사의 제조방법Manufacturing Method of Shrinkage Blended Yarn

제1도는 본 발명에 적용되는 연신기 개략도.1 is a schematic view of a drawing machine applied to the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

A : 상대적 방속이 낮은 폴리에스터 미연신사군A: Polyester undrawn yarn with low relative flux

B : 상대적 방속이 높은 폴리에스터 미연신사군B: Polyester non-stretched group with high relative flux

5 : 연신가열판 6 : 유체처리노즐5: stretched heating plate 6: fluid treatment nozzle

본 발명은 이수축 혼섬사의 제조방법에 관한 것으로 더욱 상세하게는 방속차가 다른 두종의 폴리에스터 필라멘트 미연신사군을 연신기상에서 합사하여 복합후, 연신기상에 설치된 유체처리노즐에 의해 교락을 부여토록 하려는 것이다.The present invention relates to a manufacturing method of biaxial horn fiber, and more specifically, to combine two kinds of polyester filament unstretched yarn with different speed difference on a stretching machine, and then, to combine and impart entanglement by a fluid treatment nozzle installed on the stretching machine. .

근래 고급폴리에스터 직물분야에서는 부드럽고 부피감이 있는 동시에 우수한 드레이프성을 갖춘 직물에 대한 요구가 급증하고 있으며, 이에 맞추어 폴리에스터 필라멘트 제사분야에서도 이러한 요구에 부응하기 위해 제사기술개발에 박차를 가하여 수축성이 큰 폴리에스터섬유와 수축성이 적은 폴리에스터섬유를 혼섬하는 이수축 혼섬사의 제사기술이 개발되어 보편적으로 시행되어 왔는 바, 그 방법들을 몇가지 나열하면,Recently, the demand for soft and bulky fabrics with excellent drape is increasing rapidly in the field of high-quality polyester fabrics. Accordingly, in order to meet these demands in the field of polyester filament yarns, we have spurred the development of weaving technology and The spinning technique of bi-shrink blending yarn, which blends polyester fiber and polyester fiber with less shrinkage, has been developed and practiced.

첫째 : 중합단계에서 폴리머 개질에 의해 고수축성 섬유를 제사하여 일반 폴리에스터 필라멘트사와 혼섬하는 방법First: a method of blending with a general polyester filament yarn by producing a high shrinkage fiber by polymer modification in the polymerization step

둘째 : 방사단계에서 방사노즐의 직경변화에 의한 방사드레프트 조절로 수축성을 다르게 하는 데니어 혼섬사 제조방법Second: Denier horn fiber yarn manufacturing method to vary the shrinkage by adjusting the spin drift by changing the diameter of the spinning nozzle in the spinning step

셋째 : 연신단계에서 두종의 폴리에스터 필라멘트사를 복합함에 있어 그중 한종은 연신가열판을 통과시키고 나머지 한종은 연신가열판을 통과시키지 않도록 제사하여 혼섬시키는 방법Third: In combining two kinds of polyester filament yarns in the stretching step, one of them passes through the stretching heating plate and the other one is mixed so as not to pass through the stretching heating plate.

넷째 : 중합, 방사, 연신조건에 의해 고수축 폴리에스터 필라멘트사와 저수축 폴리에스터 필라멘트사를 각각 제사하여 혼섬가공기를 이용 혼섬시키는 방법등이 있다.Fourth, there are methods of blending high shrink polyester filament yarns and low shrink polyester filament yarns by mixing, spinning, and stretching conditions, respectively.

그러나 첫번째의 경우 폴리머개질에 의한 원가상승이 필연적이고 연신공정에서의 모우가 많이 발생하는 등의 공정상의 문제가 있으며, 두번째의 경우는 그 수축율차가 미미하여 직물상에서 충분한 효과를 발현하기 어려운 문제가 있었고, 세번째의 경우 연신작업성이 까다로우며 연신사도 분리에 따른 루프 및 모우가 많이 발생되는 문제점이 있으며, 네번째의 경우는 혼섬가공기를 거치는 공정이 추가되기 때문에 그에 따른 설비가 필요하고 원가상승의 폭도 커지는 문제점이 있었다.However, in the first case, there is a problem in the process such as the cost increase due to polymer modification and the occurrence of a lot of wool in the stretching process, in the second case there is a problem that it is difficult to express a sufficient effect on the fabric because the difference in shrinkage rate is small. In the third case, the drawing workability is difficult, and the drawing yarn also has a problem of a lot of loops and mourning due to separation. In the fourth case, an additional process is required through the horn-sum processing machine. There was a problem.

본 발명은 이러한 제반 문제점을 해결하기 위한 것으로 제사과정중의 작업성 및 공정성을 현저히 개선하고 제조원가도 저렴한 반면 그 직물효과면에서 종래의 폴리에스터 필라멘트사에서는 발현시키기 어려운 우수한 부드러운 촉감과 부피감 및 드레이프성을 직물상 충분히 발현시킬 수 있는 이수축 혼섬사를 제조하려는 제조방법을 제공코자 함에 그 목적을 둔 것이다.The present invention is to solve these problems, significantly improving the workability and processability during the weaving process, and manufacturing cost is low, while in terms of the fabric effect, excellent soft touch, bulkiness and drape that are difficult to express in conventional polyester filament yarn The purpose of the present invention is to provide a method for producing a biaxial hornsum yarn which can sufficiently express the fabric.

본 발명을 첨부된 도면과 관련하여 구체적으로 상술하면 다음과 같다.The present invention will be described in detail with reference to the accompanying drawings as follows.

본 발명은 에틸렌 테레프탈레이트(Ethylene Terephtalate)를 주된 구성단위로 하는 폴리에스터 미연신사를 방사속도를 달리하여 두종의 미연신사를 만드는데 있어서 그중 한종은 방사속도 1,000m/분∼1,500m/분으로 방사하여 그 배향도를 6.0×10-3∼20.0×10-3으로, 자연연신배율(NDR)을 2.4∼3.0배로 맞춘 상대적으로 낮은 방속의 폴리에스터 미연신사를 만들고 나머지 한종은 방사속도 1,800m/분∼2,200m/분으로 방사하여 그 배향도를 16.0×10-3∼40.0×10-3으로, 자연연신배율(NDR)을 1.6∼2.5배로 맞춘 상대적으로 높은 방속의 폴리에스터 미연신사를 만들어 이와 같이 만든 2종의 폴리에스터 미연신사군을 연신 크릴부(C)에서 합사한뒤 연신배율을 상대적 방속이 낮은 폴리에스터 미연신사군(A)의 자연연신배율(2.4∼3.0배)의 0.6∼1.2배의 배율과 상대적 방속이 높은 폴리에스터 미연신사군(B)의 자연연신 배율(1.6∼2.5배)의 0.9∼1.4배율을 동시에 만족하는 배율의 범위에서 연신 온도 60∼100℃, 연신가열판(Heat Set Plate)(5) 온도 100∼200℃의 범위에서 연신한후 연신롤러(6)와 연신권취부(8)사이에 설비된 유체처리노즐(7)을 이용하여 유체압으로 처리함으로서 상기 방속차가 서로 다른 폴리에스터 필르멘트사군에 교락을 30개/m이상 부여토록 한 것이다.In the present invention, two kinds of undrawn yarns are produced by varying the spinning speed of polyester undrawn yarn having ethylene terephtalate as the main structural unit, and one of them is spun at a spinning speed of 1,000 m / min to 1500 m / min. The degree of orientation is 6.0 × 10 -3 to 20.0 × 10 -3 , and relatively low-discharge polyester non-stretched yarn with a natural draw ratio (NDR) of 2.4 to 3.0 times is produced. The other one has a spinning speed of 1,800 m / min to 2,200. Two kinds of non-stretched polyester yarns made in this way by producing relatively high flux polyester untwisted yarns with a natural stretching ratio (NDR) of 1.6 to 2.5 times by spinning at m / min and having an orientation of 16.0 × 10 −3 to 40.0 × 10 −3 . The polyester unstretched group of plywood is blended in the stretched krill section (C), and then the draw ratio is 0.6 to 1.2 times the magnification and the relative flux of the natural stretch ratio (2.4 to 3.0 times) of the polyester non-stretched group (A), which has a low relative flux. This high polyester Stretching temperature 60-100 degreeC, heat set plate (5) 100-200 degreeC in the range of the magnifications which satisfy | fills 0.9-1.4 magnification of the natural draw ratio (1.6-2.5 times) of the unstretched yarn group (B) simultaneously. After stretching in the range of, by treating the fluid pressure using a fluid treatment nozzle (7) provided between the stretching roller (6) and the stretching winding (8) by the fluid pressure difference between the different groups of polyester filament yarn 30 More than / m.

도면중 미설명부호 3은 피이드로울러, 4는 연신가열로울러이다.In the drawings, reference numeral 3 denotes a feed roller, and 4 denotes an extension heating roller.

위와 같은 본 발명의 폴리에스터 섬유를 구성하는 폴리머는 에틸렌 테레프탈레이트를 주된 구성단위로 하는 폴리에스터로서 에틸렌 테레프탈레이트가 85몰% 이상인 폴리에틸렌 테레프탈레이트 또는 공중합체이고, 그 고유점도는 물성면에서 0.5∼0.8의 범위가 바람직하다.The polymer constituting the polyester fiber of the present invention as described above is a polyester having ethylene terephthalate as the main structural unit, and is a polyethylene terephthalate or copolymer having an ethylene terephthalate of 85 mol% or more, and its intrinsic viscosity is from 0.5 to physical properties. The range of 0.8 is preferred.

상술한 바와 같이 상대적 방속이 낮은 폴리에스터 미연신사군(A)의 물성은 그 배향도가 6.o×10-3∼20.0×10-3, 자연연신배율이 2.4∼3.0배가 적당한 바, 배향도가 6.0×10-3이하이고 자연연신배율이 3.0배이상이면 물성이 너무 취약하여 제직용 원사로서는 부적당하고, 배향도가 20.0×10-3이상이고 자연연신배율이 2.4배 이하이면 직물효과상 충분한 부드러운 촉감을 발현하기가 어렵다.As described above, the physical properties of the polyester non-drawn yarn group (A) having a low relative flux are suitable for an orientation degree of 6.o × 10 −3 to 20.0 × 10 −3 and a natural draw ratio of 2.4 to 3.0 times. If it is 10 -3 or less and the natural draw ratio is 3.0 times or more, the physical property is too weak to be suitable for woven yarn, and if the orientation is 20.0 × 10 -3 or more and the natural draw ratio is 2.4 times or less, sufficient soft touch is produced for the fabric effect. Difficult to do

한편 상대적 방속이 높은 폴리에스터 미연신사군(B)의 물성은 그 배향도가 16.0×10-3∼40.0×10-3, 자연연신배율이 1.6∼2.5배가 적당한 바, 배향도가 16.0×10-3이하이고 자연연신배율이 2.5배이상이면 상대적 저방속 폴리에스터 미연신사의 물성차가 적어져 직물효과상 충분한 부피감의 발현이 어렵게 된다.On the other hand, the physical properties of the polyester non-drawn yarn group (B) having high relative flux are suitable for the orientation degree of 16.0 × 10 −3 to 40.0 × 10 −3 and the natural draw ratio of 1.6 to 2.5 times, and the orientation degree is 16.0 × 10 −3 or less. If the natural draw ratio is 2.5 times or more, the difference in physical properties of the low-stretch polyester non-stretched polyester becomes less, which makes it difficult to express a sufficient volume.

그리고 배향도가 40.0×10-3이상이고 자연연신배율이 1.6배이하이면 상대적 저방속 미연신사와의 물성차가 너무 커져 연신공정성이 불량하게 된다.If the degree of orientation is 40.0 × 10 −3 or more and the natural draw ratio is 1.6 times or less, the difference in physical properties from the relatively low-stretch unstretched yarn becomes so large that the stretching processability is poor.

다음 연신배율설정에 있어서, 상대적 방속이 낮은 폴리에스터 미연신사군(A)의 자연연신배율(2.4∼3.0 배)의 0.6배∼1.2배의 배율과 상대적 방속이 높은 폴리에스터 미연신사군(B)의 자연연신배율(1.6∼2.5배)의 0.9배∼1.4배율을 동시에 만족하고 배율의 범위가 적당한 바, 연신배율이 상대적 방속이 낮은 미연신사군(A) 자연연신배율의 0.6배이하가 되면 물성이 취약하여져 제직용 원사로서는 부적당하고 상대적 방속이 낮은 미연사군(A)의 자연연신배율이 1.2배이상이 되면 상대적 방속이 높은 미연신사군(B)과의 수축율차가 적어져 직물상 부피감이 적어지고 부드러운 촉감의 효과도 적어지게 된다.In the following draw magnification setting, a ratio of 0.6 to 1.2 times the natural draw ratio (2.4 to 3.0 times) of the polyester undrawn yarn group (A) having a low relative flux and a natural ratio of the polyester undrawn yarn (B) having a high relative flux It satisfies 0.9 to 1.4 magnification of the draw ratio (1.6 to 2.5 times) simultaneously and the range of magnification is moderate. If the draw ratio is less than 0.6 times of the non-stretched group (A) natural draw ratio with low relative flux, the physical properties become weak. If the natural stretching ratio of the non-twisted yarn (A), which is inadequate for woven yarn and has a low relative flux, is 1.2 times or more, the shrinkage difference between the non-twisted yarn (B), which has a relatively high discharge rate, is small, resulting in less bulky texture and soft touch Will also be less.

또한 연신배율이 상대적 방속이 높은 미연신사군(B)의 자연연신배율의 0.9이하가 되면 상대적 방속이 높은 미연신사와의 수축율차가 적어져 직물상 부피감이 적어지고 드레이프성도 떨어지게 된다.In addition, when the draw ratio is less than 0.9 of the natural draw ratio of the non-drawn yarn group (B) having high relative flux, the shrinkage difference with the non-drawn yarn with high relative flux is small, resulting in less fabric volume and drape.

상대적 방속이 높은 미연신사군(B)의 자연연신배율의 1.4이상이 되면 연신배율이 너무 높아 연신공정성이 불량해진다.When the natural stretching ratio of the non-drawn yarn group (B) having a relatively high discharge rate is 1.4 or more, the stretching ratio is too high, so that the stretching processability is poor.

다음 연신온도 설정에 있어서 연신온도가 60∼100℃의 범위가 적당한바, 60℃ 이하일 경우 사물성이 취약하여지고 100℃ 이상일 경우 연신공정성이 불량하여 진다. 그리고 연신가열판(5)온도는 100∼200℃의 범위가 적당한 바 연신가열판 온도가 100℃ 이하일 경우 직물공정상의 많은 문제점이 있어 직물작업성이 불량하여지게 되고 200℃ 이상일 경우 연신공정성이 불량하여 수축율이 저하되는 결점이 있다.In the setting of the stretching temperature, the stretching temperature is in the range of 60 to 100 ° C. If the stretching temperature is less than 60 ° C, the objectivity becomes weak, and if the stretching temperature is more than 100 ° C, the stretching processability is poor. And the stretching heating plate (5) temperature is in the range of 100 ~ 200 ℃ bar if the stretching heating plate temperature is less than 100 ℃ there are a lot of problems in the fabric process, the fabric workability is poor, if the stretching temperature is above 200 ℃ shrinkage rate due to poor stretching processability This disadvantage is deteriorated.

그리고 연신기상에 설치된 유체처리노즐(7)을 이용 상기 방속차가 다른 폴리에스터 필라멘트사군에 교락을 부여함에 있어서 가장 이상적인 형태는 가장 적은 유체압력으로 가장 많은 교락을 부여시킬 수 있는 유체처리노즐(7)의 선정이 중요한 포인트라 하겠다. 다만 그 교락수에 있어서 30개/m이하일 경우 제직공정을 거치면서 교락이 거의 풀어져 교락효과에 의한 부피감 및 드레프이성이 떨어지게 되고 교락이 많을수록 얻어질 수 있는 직물표면상의 반발탄성효과도 얻을 수가 없게 된다.In addition, the fluid treatment nozzle (7) installed on the drawing machine uses the fluid treatment nozzle (7), which is capable of providing the most entanglement with the least fluid pressure. The selection of is an important point. However, if the number of entanglements is less than 30 / m, the entanglement is almost released during the weaving process, resulting in a decrease in volume and drape ease due to the entanglement effect. do.

그러나 많은 교락을 얻기 위하여 유체압력을 막연히 올리면 제품외관상 모우 및 피브릴 발생이 많아지게 되어 제품상태가 불량하게 되고 직물 제직성도 현저히 불량하게 되는 점이 있다.However, in order to obtain a lot of entanglement, if the fluid pressure is raised vaguely, the appearance of the wool and fibrils increase in appearance, resulting in poor product condition and weaving fabrics.

본 발명의 제조방법을 실시예 및 비교예에 따라 설명하면 다음과 같다.Referring to the production method of the present invention according to Examples and Comparative Examples are as follows.

표 1은 실시예 및 비교예에 따른 제사조건 및 물성과 직물효과를 비교한 것이다.Table 1 compares the weaving conditions and physical properties and the fabric effect according to the Examples and Comparative Examples.

[실시예]EXAMPLE

폴리에틸렌 테레프탈레이트를 방사 토출량 13g, 24필라, 방사속도 1,000m/분으로 방사하여 그 배향도가 6.18×10-3이고 자연연신배율이 2.94배인 저방속 폴리에스터 미연신사군(A)를 얻고 한편으로 방사 토출량 23g, 24필라, 방사속도 1,800m/분으로 방사하여 그 배향도가 24.3×10-3이고 자연연신배율이 2.24배인 고방속 폴리에스터 미연신사군(B)를 얻었다.Polyethylene terephthalate was spun at a spinning discharge rate of 13 g, 24 pillars, and a spinning speed of 1,000 m / min to obtain a low-speed polyester undrawn yarn group (A) having an orientation of 6.18 × 10 -3 and a natural draw ratio of 2.94 times, while spinning discharge It was spun at 23 g, 24 pillars, and had a spinning speed of 1,800 m / min to obtain a high-speed polyester non-drawn yarn group (B) having an orientation of 24.3 x 10 -3 and a natural draw ratio of 2.24.

이와 같이 얻은 방속차가 다른 두 미연신사군(A)(B)를 연신기 크릴부에서 합사하여 연신속도 900m/분, 연신배율 2.4배, 연신온도 80℃, 연신가열판온도 160℃의 연신조건으로 연신한 후 연신기상에 설치된 유체처리노즐을 이용하여 유체압력 1.8㎏/㎠으로 처리하여 40개/m의 교락을 부여하여 100D/48F의 이수축 혼섬사를 얻었다.Two undrawn yarn groups (A) (B) obtained in this way were combined in a drawing machine krill section and drawn under drawing conditions of drawing speed 900m / min, drawing ratio 2.4 times, drawing temperature 80 ° C and drawing plate temperature 160 ° C. Then, the fluid treatment nozzle installed on the drawing machine was treated with a fluid pressure of 1.8 kg / cm 2 to give 40 / m of entanglement to obtain a biaxial shrink fiber of 100D / 48F.

이때의 사물성 및 직물효과를 표 1에 나타내었다.Table 1 shows the object properties and the fabric effect at this time.

[비교예][Comparative Example]

폴리에틸렌 테레프탈레이트를 방사토출량 15g, 24필라, 방사속도 1,200m/분으로 방사하여 그 배향도가 8.57×10-3이고 자연연신배율이 2.84배인 저방속 폴리에스터 미연신사군(A)를 얻고 한편으로 방사 토출량 21g, 24필라, 방사속도 1,600m/분으로 방사하여 그 배향도가 11.2×10-3이고 자연연신배율이 2.57배인 고방속 폴리에스터 미연신사군(B)를 얻었다.Polyethylene terephthalate was spun at a spinning discharge rate of 15 g, 24 pillars, and a spinning speed of 1,200 m / min to obtain a low-speed polyester unstretched group (A) having an orientation of 8.57 x 10 -3 and a natural draw ratio of 2.84. It was spun at 21 g, 24 pillars and a spinning speed of 1,600 m / min to obtain a high-speed polyester undrawn yarn group (B) having an orientation of 11.2 × 10 −3 and a natural draw ratio of 2.57 times.

이와 같이 얻은 방속차가 다른 두 미연신사군(A)(B)를 연신기 크릴부에서 합사하여 연신속도 900m/분, 연신배율 2.1배, 연신온도 80℃, 연신가열판온도 160℃의 연신조건으로 연신한 후 연신기상에 설치된 유체처리노즐을 이용하여 유체압력 1.8㎏/㎠으로 처리하여 40개/m의 교락을 부여하여 100D/48F의 이수축 혼섬사를 얻었다.Two undrawn yarn groups (A) (B) obtained in this way are combined in the drawing machine krill section and drawn under drawing conditions of drawing speed 900m / min, drawing ratio 2.1 times, drawing temperature 80 ℃ and drawing heating plate temperature 160 ℃. Then, the fluid treatment nozzle installed on the drawing machine was treated with a fluid pressure of 1.8 kg / cm 2 to give 40 / m of entanglement to obtain a biaxial shrink fiber of 100D / 48F.

[표 1]TABLE 1

Claims (3)

방사속도 1,000∼1,500m/분으로 방사하여 그 배향도(△N)를 6.0×103∼20.0×103으로, 자연연신배율(NDR)을 2.4∼3.0배로 맞춘 방사속도가 상대적으로 낮은 폴리에스터 미연신사군(A)과 방사속도 1,800∼2,200m/분으로 방사하여 그 배향도(△N)를 16.0×103∼40.0×103으로, 자연연신배율(NDR)을 1.6∼2.5배로 맞춘 방사속도가 상대적으로 높은 폴리에스터 미연신사군(B)를 연신크릴부(C)에서 합사하고 연신가열로울러(4)와 가열판(5)를 통과하여 제조하는 것을 특징으로 하는 이수축 혼섬사의 제조방법.Polyester with relatively low spinning speed with spinning speed of 1,000 ~ 1,500m / min, its orientation degree (△ N) of 6.0 × 10 3 ~ 20.0 × 10 3 , and natural stretching ratio (NDR) of 2.4 ~ 3.0 times Shinsa group (A) and the spinning speed of 1,800 ~ 2,200m / min and the orientation speed (△ N) of 16.0 × 10 3 to 40.0 × 10 3 , and the spinning speed of the natural stretching ratio (NDR) of 1.6 to 2.5 times Method for producing a biaxial blended yarn, characterized in that the high polyester undrawn yarn group (B) in the stretched creel portion (C) to ply and pass through the stretched heating roller (4) and the heating plate (5). 제1항에 있어서, 연신배율을 상대적 방속이 낮은 폴리에스터 미연신사군(A)의 자연연신배율(2.4∼3.0배)의 0.6배∼1.2배의 배율과 상대적 방속이 높은 폴리에스터 미연신사군(B)의 자연연신배율(1.6-2.5배)의 0.9배∼1.4배율을 동시에 만족하는 배율에서 연신온도를 60℃∼100℃, 연신가열판(5)온도를 100℃∼200℃의 범위에서 연신하는 것을 특징으로 하는 이수축 혼섬사의 제조방법.The polyester unstretched group (B) having a magnification of 0.6 to 1.2 times the natural draw ratio (2.4 to 3.0 times) of the polyester non-stretched group (A) having a low relative flux, and a high relative flux. The drawing temperature is stretched in the range of 60 ° C to 100 ° C and the stretched heating plate 5 in the range of 100 ° C to 200 ° C at a magnification that satisfies 0.9 to 1.4 times the natural drawing ratio of 1.6 to 2.5 times. The manufacturing method of the biaxial blended yarn made into. 연신롤러(6)와 연신권취부(8)사이에 설치된 유체처리노즐(7)을 이용하여 유체압으로 처리함으로서 상기 방속차가 서로 다른 폴리에스터 필라멘트사군에 교락을 30개/m이상 부여하는 것을 특징으로 하는 이수축 혼섬사의 제조방법.By processing the fluid pressure using a fluid treatment nozzle 7 provided between the stretching roller 6 and the winding winding unit 8, 30 or more m / s of entanglement is given to the polyester filament yarn groups having different discharge speeds. The manufacturing method of the biaxial blended yarn made into.
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