KR930011946B1 - Method for preparation of the latent characteristic polyester fiber - Google Patents

Method for preparation of the latent characteristic polyester fiber Download PDF

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Publication number
KR930011946B1
KR930011946B1 KR1019910024676A KR910024676A KR930011946B1 KR 930011946 B1 KR930011946 B1 KR 930011946B1 KR 1019910024676 A KR1019910024676 A KR 1019910024676A KR 910024676 A KR910024676 A KR 910024676A KR 930011946 B1 KR930011946 B1 KR 930011946B1
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roller
contact surface
cold
polyester fiber
heating
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KR1019910024676A
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Korean (ko)
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KR930013295A (en
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김희경
이대형
손율
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주식회사 코오롱
하기주
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G1/00—Severing continuous filaments or long fibres, e.g. stapling
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch

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

Abstract

melt-spinning the polyethylene terephthalate of intrinsic viscosity above 0.65; quenching and solidifying; drawing through a hot-cold apparatus, placed between the first roller and the second roller in which the draw ratio is 1.5-3.5, and having an arrangement in which the heated contacting surface of 100-150 deg.C and the cold contacting surface of 5-30 deg.C are protruded alternately in opposite direction, so that one surface of the undrawn fiber is contacted with the heated contacting surface and the other surface of the fiber is contacted with cold contacting surface in a mutually pushed way.

Description

잠재권축성 폴리에스터 섬유의 제조방법Method for producing latent crimped polyester fiber

제1도는 본 발명의 장치도이다.1 is an apparatus diagram of the present invention.

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

1 : 제1롤러 2 : 분리 롤러(Separate Roller)1: first roller 2: separation roller

3 : 가열접촉면 4 : 냉접촉면3: heating contact surface 4: cold contact surface

5 : 제2롤러 6 : 분리 롤러(Separate Roller)5: second roller 6: separation roller

7 : 사7: four

본 발명은 잠재권축성 폴리에스터 섬유의 제조방법에 관한 것이다. 더욱 구체적으로는 동일 중합체로 방사된 미연신사를 연신처리시 필라멘트 양면간에 서로 다른 열이력을 받게 함으로써 수축률차에 의해 권축을 발현토록 한 것이다.The present invention relates to a process for producing latent crimped polyester fibers. More specifically, when the unstretched yarn spun with the same polymer is subjected to different heat history between both sides of the filament, the crimp is expressed by the shrinkage difference.

일반 함성섬유 원단은 천연섬유에 비해 촉감이 좋지 못하므로 이 촉감을 향상시키기 위해 여러 가지 제조 기술들이 연구되어 왔으며 그중에서도 본 발명에서의 효과와 동일한 권축을 얻기 위한 방법으로는 한특공고 90-3340, 한특공고 90-3335, 일특개소 59-179813, 59-223337호 등에서 서로 다른 물성을 가진 중합체를 합방사하여 연신 열처리하여 제조하는 방법이 제안되어 있다.General synthetic fiber fabrics have a poor touch compared to natural fibers, so a variety of manufacturing techniques have been studied to improve the touch. Among them, as a method for obtaining the same crimp as the effect of the present invention, Han Special Publication 90-3340, Han Special In the publications 90-3335, 59-179813, 59-223337, etc., a method of producing a polymer by polymerizing a polymer having different physical properties and stretching the heat treatment is proposed.

즉, 중합체 성분이 상이한 고수축 및 저수축사의 중합체를 서로 다른 중합체 유로를 통하여 필라멘트의 단면형태가 나란한 이중 중합체(side by side) 또는 편심 동축 중합체(sheath and core)형태로 되고 이후 가공시 두 중합체의 열수축 이력에 의해 권축이 발현되도록 한 것이다. 그러나 이들의 경우 두 중합체간의 상요성 및 접합력이 부족하여 토출합사시 융합불균일은 물론 쉽게 분리되어 모우등이 다량발생 제사성이 떨어짐은 물론 원사자체의 물성이 저하되는 문제점이 있다. 또한 구금제작시 각기 다른 중합체 유로를 천공해야 하는등 구금제작상의 어려움도 있다.That is, polymers of high and low shrinkage yarns having different polymer components form a side by side or eccentric coaxial polymer (sheath and core) in which the cross-sections of the filaments are parallel through different polymer flow paths, and then the two polymers are processed. The crimp is expressed by the heat shrink history. However, in these cases, there is a problem in that the physical properties of the yarn itself are deteriorated as well as inferior fusion non-uniformity, as well as the separation of the fusion non-uniformity during the ejection bonding due to the lack of compatibility and bonding strength between the two polymers. There are also difficulties in detention, such as the need to drill different polymer flow paths during detention.

본 발명에서는 종래의 상기와 같은 문제점을 해결한 것으로서 동일 중합체를 사용 방사하되 연신시 열이력을 상이하게 받도록 하여 필라멘트 양면에 서로 다른 미세구조를 형성시켜 원사상태에서는 일반 플렛안과 같으나 염색가공시 수축차이로 인해 권축구조를 형성시킴으로서 천연섬유와 유사한 촉감을 나타내도록 한 것이다.In the present invention to solve the problems as described above, the same polymer is used to spin, but different thermal structures during filament to form different microstructures on both sides of the filament to form different microstructures in the yarn state, but shrinkage difference during dyeing processing Due to the crimp structure is to form a texture similar to natural fibers.

본 발명을 좀더 상세히 설명하면 다음과 같다.The present invention will be described in more detail as follows.

본 발명은 고유점도가 0.65이상인 폴리에틸렌 테레프탈레이트를 용융방사, 급냉고화한 후, 이를 제1롤러와 제2롤러 사이에서 교호로 배치한 가열접촉면과 냉접촉면을 가진 냉열구를 교호로 통과시킬 때, 필라멘트의 한쪽면은 가열상태로 또다른 한쪽면은 냉각상태로 하면서 연신시켜 제조함을 특징으로 한다.According to the present invention, after melt spinning and quenching the polyethylene terephthalate having an intrinsic viscosity of 0.65 or more, and alternately passing a cooling contact having a cold contact surface and a heating contact surface alternately disposed between the first roller and the second roller, One side of the filament is characterized in that it is produced by stretching while the other side is in a cooled state.

즉, 본 발명은 제1도에 예시한 바와 같이 연신장치의 제1롤러(1)와 제2롤러(5) 사이에서 폴리에틸렌 테레프탈레이트 미연신사를 연신하며, 연신시 양롤러(1,5) 사이에 교호로 가열접촉면(3)과 냉접촉면(4)이 배치된 냉열구를 통과시커 가열연신함을 특징으로 한다. (2,6)은 분리 롤러이고, (7)은 연신되는 사이다.That is, the present invention extends the polyethylene terephthalate undrawn yarn between the first roller 1 and the second roller 5 of the stretching apparatus as illustrated in FIG. 1, and the two rollers 1,5 during stretching. Alternating heat treatment is characterized in that the heat-seeker heat-stretched passing through the cooling hot air outlet is arranged the heating contact surface 3 and the cold contact surface (4). (2,6) is a separation roller, and (7) is an extending | stretching period.

본 발명에서 제1롤러(1)와 제2롤러(5) 사이에 채택한 냉열구의 가열접촉면(3)과 냉접촉면(4)은 특히 중요한 것으로, 제1도에 예시한 바와같이 각 접촉면은 돌출구(edge)가 사(7)를 상호미는 형태가 바람직하고, 돌출구는 기타 안내 롤러(guide roller)형도 가능하며, 이때 교호로 설치되는 가열접촉면(3)과 냉접촉면(4)의 개수는 특별히 한정할 필요는 없으나 바람직하게는 각각 2-3개씩, 특히 바람직하게는 제1도에 도시한 바와 같이 각각 2개씩이다.In the present invention, the heating contact surface 3 and the cold contact surface 4 of the cold heating tool adopted between the first roller 1 and the second roller 5 are particularly important. As illustrated in FIG. It is preferable that the edges cross the yarns 7, and the protrusions may have other guide roller types, and the number of alternating heating contact surfaces 3 and cold contact surfaces 4 may be particularly limited. Although not necessary, it is preferably 2-3 pieces each, particularly preferably 2 pieces each as shown in FIG.

본 발명에서 가열접촉면(3)의 표면온도는 100∼150℃, 냉접촉면(4)의 표면온도는 5∼30℃가 좋다. 가열접촉면(3)의 온도가 150℃이상이면 연사효율이 떨어질 우려가 있고 100℃이라면 냉접촉면(4)과의 온도차가 적어 요구하는 수준의 권축발현이 힘들게 된다. 또한 냉접촉면(4)의 온도가 30℃ 이상이면 가열접촉면(3)과의 온도차이가 적어 권축발현이 힘들고 5℃ 이하에서는 연신이 불가능하게 되어 다량의 사절이 발생하게 된다.In this invention, the surface temperature of the heating contact surface 3 is 100-150 degreeC, and the surface temperature of the cold contact surface 4 is 5-30 degreeC. If the temperature of the heating contact surface 3 is 150 ° C. or more, the firing efficiency may be lowered. If the temperature of the heating contact surface 3 is 100 ° C., the temperature difference with the cold contact surface 4 is small, so that crimping at the required level is difficult. In addition, when the temperature of the cold contact surface 4 is 30 ° C. or more, the temperature difference with the heating contact surface 3 is small, so that crimping is difficult and stretching is impossible at 5 ° C. or lower, resulting in a large amount of thread trimming.

또한 제1롤러(1) 온도는 필라멘트사의 균일한 연신을 도모하기 위해 온도를 85∼100℃ 수준으로 유지시켜야 하며, 제2롤러(5) 온도는 상온으로 유지한다. 이때 제1롤러(1)와 제2롤러(5) 사이의 연신비는 미연신사의 배향수준에 따라 1.5-3.5배 정도로 연신하면 본 발명에서 요구하는 가장 우수한 권축특성을 발현하게 된다. 본 발명에서 가열접촉면(3)과 냉접촉면(4)의 교호배열 방법은 제1도에 예시한 바와 같이 제1롤러(1)에서 예비 가열시 사 부분이 계속하여 가열접촉면(3)과 접촉가열되도록 그 위치를 적정 배열해야 한다.In addition, the temperature of the first roller (1) should be maintained at a temperature of 85 to 100 ℃ to achieve uniform stretching of the filament yarn, the temperature of the second roller (5) is maintained at room temperature. At this time, when the stretching ratio between the first roller 1 and the second roller 5 is stretched to about 1.5-3.5 times according to the orientation level of the unstretched yarn, the best crimp characteristic required by the present invention is expressed. In the present invention, a method of alternately arranging the heating contact surface 3 and the cold contact surface 4 in the first roller 1 as shown in FIG. The position should be arranged properly.

이와 같이 본 발명에 따라 제조된 필라멘트사는 계속해서 가열접촉면(3)에 접촉처리된 한쪽부분은 결정화도가 높고 비정부의 배향도는 낮아서 후가공시 수축율이 낮은 반면 계속해서 냉접촉면(4)에 접촉처리된 다른 한쪽은 결정화도가 낮고 비결정 배향이 높아 후가공시 수축률이 높다. 즉, 제1롤러와 제2롤러 사이에서 필라멘트의 한쪽면은 계속열을 받고 또다른 한쪽면은 계속 냉각되어 양단면간의 결정 및 배향구조가 상이하게 되어 수축률 차이가 생기며 결과적으로 제직후 염색 가공시 권축이 발현되어 소프트한 촉감을 나타내게 되는 것이다.Thus, the filament yarn manufactured according to the present invention is continuously contacted to the heating contact surface (3) has a high degree of crystallinity and low non-orientation orientation has a low shrinkage during post-processing while the other continuously contacted to the cold contact surface (4) One side has low crystallinity and high amorphous orientation, resulting in high shrinkage during post-processing. In other words, between the first roller and the second roller, one side of the filament continues to heat and the other side continues to cool, resulting in different crystal and orientation structures between the two end faces, resulting in a shrinkage difference. The crimp is expressed and it shows a soft touch.

이하 실시예 및 비교예에 의거 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to Examples and Comparative Examples.

[실시예 1∼4 및 비교예 1∼4][Examples 1-4 and Comparative Examples 1-4]

고유점도 0.65인 PET를 3000m/min을 방사 권취후 아래 조건으로 연신하여 75D/36F의 PET연신사를 제조하고, 그 물성을 평가하여 하기표에 정리하였다.PET with an intrinsic viscosity of 0.65 was stretched under the following conditions after spinning of 3000 m / min to prepare PET stretched yarn of 75D / 36F, and the physical properties thereof were summarized in the following table.

* 권축사는 비등수 처리후 권축발현 수임.* The cricketer is the cricket expression after boiling water treatment.

* 제1롤러 온도는 90℃* The first roller temperature is 90 ℃

Claims (3)

고유점도 0.65이상인 폴리에틸렌 테레프탈레이트를 용융방사, 급냉고화한 후 제1롤러와 제2롤러 사이에서 가열접촉면과 냉접촉면이 교호로 대향 돌출 배치된 냉열구를 통하여 연신하며, 연신시 미연신사의 한쪽면은 가열접촉면과 또다른 한쪽면은 냉접촉면과 상호 밀리는 상태로 접촉시키면서 연신 열처리함을 특징으로 하는 잠재권축성 폴리에스터 섬유의 제조방법.After melt spinning and quenching of polyethylene terephthalate having an intrinsic viscosity of 0.65 or more, it is stretched through a cold-heating hole in which a heating contact surface and a cold contact surface are alternately projected alternately between the first roller and the second roller. A method of producing a latent crimped polyester fiber, wherein the silver heating contact surface and the other side are stretched and heat treated while being in contact with the cold contact surface. 제1항에 있어서, 가열접촉면의 온도는 100∼150℃이고, 냉접촉면 온도는 5∼30℃임을 특징으로 한 잠재권축성 폴리에스터 섬유의 제조방법.The method of claim 1, wherein the temperature of the heating contact surface is 100 ~ 150 ℃, the cold contact surface temperature is 5 ~ 30 ℃. 제1항에 있어서, 제1롤러와 제2롤러 사이의 연신바가 1.5∼3.5임을 특징으로 한 잠재 권축성 폴리에스터 섬유의 제조방법.The method for producing latent crimped polyester fiber according to claim 1, wherein the stretched bar between the first roller and the second roller is 1.5 to 3.5.
KR1019910024676A 1991-12-27 1991-12-27 Method for preparation of the latent characteristic polyester fiber KR930011946B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG87134A1 (en) * 1999-07-15 2002-03-19 Uni Charm Corp Cold drawing apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SG87134A1 (en) * 1999-07-15 2002-03-19 Uni Charm Corp Cold drawing apparatus

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