KR20010061906A - Thermally fusible composite fiber - Google Patents

Thermally fusible composite fiber Download PDF

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Publication number
KR20010061906A
KR20010061906A KR1019990065624A KR19990065624A KR20010061906A KR 20010061906 A KR20010061906 A KR 20010061906A KR 1019990065624 A KR1019990065624 A KR 1019990065624A KR 19990065624 A KR19990065624 A KR 19990065624A KR 20010061906 A KR20010061906 A KR 20010061906A
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South Korea
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melting point
ingredient
composite fiber
heat
low melting
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KR1019990065624A
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Korean (ko)
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KR100587122B1 (en
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구본철
윤건상
김훈규
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조민호
주식회사 휴비스
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    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/14Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D10/00Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
    • D01D10/02Heat treatment
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00Formation of filaments, threads, or the like
    • D01D5/08Melt spinning methods
    • D01D5/098Melt spinning methods with simultaneous stretching
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00Formation of filaments, threads, or the like
    • D01D5/28Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
    • D01D5/30Conjugate filaments; Spinnerette packs therefor
    • D01D5/34Core-skin structure; Spinnerette packs therefor
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/06Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Multicomponent Fibers (AREA)

Abstract

PURPOSE: Provided is a heat adhesive conjugated fiber having no difficulty in spinning and drawing, excellent heat fusing property and no heat fusing trouble at low temperature. CONSTITUTION: The heat adhesive conjugated fiber is comprised of an ingredient having low melting point and an ingredient having high melting point. The ingredient having low melting point forms continuously at least part of the fiber surface in the fiber directions. The ingredient having low melting point is characterized by at least 60deg.C of glass transition temperature. The ingredient having low melting point is comprised of a mixture of 1-20wt.% of polyolefin and 80-99wt.% of copolymerized polyester comprising 50-70mol% of polyethylene terephthalate unit. Melt flowing index of the polyolefin is 1-45, and melt viscosity is 500-10000Pa.S. The ingredient having low melting point forms sheath part. The ingredient having high melting point forms core part.

Description

저온 융착성이 개선된 열접착성 복합섬유 {Thermally fusible composite fiber}Thermally adhesive composite fiber with improved low temperature fusion {Thermally fusible composite fiber}

본 발명은 열접착성 복합섬유에 관한 것으로서, 특히 저온에서 열융착문제가 개선된 열접착성 복합섬유에 관한 것이다.The present invention relates to a heat-adhesive composite fiber, and more particularly, to a heat-adhesive composite fiber having improved heat fusion problems at low temperatures.

직물밀도 10∼45g/㎡의 저밀도 부직포는 종이기저귀, 위생냅킨 등의 표면재료로 사용된다. 부직포의 용도가 다양화됨에 따라, 부직포에 요구되는 특성 또한 엄격하게 되고, 부드러운 촉감을 유지하면서 고강도를 보유하는 부직포에 대한 요구가 있어왔다. 이러한 요구에 부응하기 위하여 미세하고 열접착성이 있으며, 저융점 성분이 충분한 열접착강도를 제공할 뿐만아니라 유연성을 부여하는 복합섬유가 필요하게 된다.Low-density nonwovens with a fabric density of 10-45 g / m 2 are used as surface materials for paper diapers and sanitary napkins. As the use of nonwoven fabrics is diversified, the characteristics required for nonwoven fabrics also become strict, and there has been a demand for nonwoven fabrics having high strength while maintaining a soft touch. In order to meet these demands, there is a need for a composite fiber that is fine and thermally adhesive, and that a low melting point component not only provides sufficient thermal adhesive strength but also provides flexibility.

종래 폴리에틸렌, 폴리프로필렌 등의 폴리올레핀계 성분을 저융점성분으로 하고 통상의 폴리에틸렌테레프탈레이트 등의 폴리에스테르 및 폴리프로필렌 등의 폴리올레핀계 성분을 고융점성분으로 하는 시쓰-코아형 또는 사이드 바이 사이드형 복합섬유는 기존에 많이 알려져 있다.A sheath-core or side-by-side composite fiber in which polyolefin-based components such as polyethylene and polypropylene are used as low-melting point components, and polyolefin-based components such as polypropylene and polypropylene, such as ordinary polyethylene terephthalate, as high-melting-point components. Is known a lot.

예를 들어, 미국특허 5,866,488호에는 제1성분이 폴리에틸렌으로 되고 제2성분이 폴리에스테르로 되며, 상기 폴리에틸렌은 길이방향으로 섬유 표면의 적어도 일부를 연속적으로 점유하며 그 분자쇄에 1.5개/탄소수 1000 이하의 메틸 분기를 가지고, 밀도가 0.940∼0.965g/㎤, Q값(중량평균분자량/수평균분자량)이 4.8 이하인 열융착성 복합섬유가 제시된다. 또한 미국 특허 제5,798,305호에는 폴리프로필렌 또는 폴리프로필렌으로 되는 고융점 성분과 폴리에틸렌으로 되는 저융점 성분으로 이루어지며, 폴리에틸렌이 섬유방향으로 섬유표면의 적어도 일부를 연속적으로 형성하며 분자쇄에 0∼1.5 메틸분기/탄소수 1000을 가지고, 밀도가 0.950∼0.965g/㎤, Q값(중량평균분자량/수평균분자)이 4.5 이하인 핫멜트접착성 복합섬유가 제시된다.For example, US Pat. No. 5,866,488 discloses that the first component is polyethylene and the second component is polyester, the polyethylene continuously occupying at least a portion of the fiber surface in the longitudinal direction and having a molecular chain of 1.5 / 1000 carbon atoms. A heat-sealable composite fiber having a methyl branch of less than or equal to 0.940 to 0.965 g / cm 3 and a Q value (weight average molecular weight / number average molecular weight) of 4.8 or less is presented. U.S. Patent No. 5,798,305 also includes a high melting point component of polypropylene or polypropylene and a low melting point component of polyethylene, wherein polyethylene forms at least a portion of the fiber surface continuously in the fiber direction and is from 0 to 1.5 methyl in the molecular chain. A hot melt adhesive composite fiber having a branch / carbon number of 1000, a density of 0.950 to 0.965 g / cm 3 and a Q value (weight average molecular weight / number average molecule) of 4.5 or less is presented.

이와 같은 폴리에스테르 열접착 복합섬유는 유리전이 온도가 통상 60에서 70℃로 나타나며 110 ~ 120℃의 온도에서 서서히 용융이 일어나는 폴리머로서 침대 매트리스와 같은 견면에 주로 적용되며 테레프탈산과 이소프탈산을 공중합체로 하고 있는 사이드 바이 사이드 또는 시쓰-코아 형태의 복합섬유 이다.The polyester heat-bonded composite fiber is a polymer in which the glass transition temperature is usually 60 to 70 ° C. and slowly melts at a temperature of 110 to 120 ° C., and is mainly applied to a plush surface such as a bed mattress and terephthalic acid and isophthalic acid as a copolymer. It is a side-by-side or sheath-core composite fiber.

이와 같은 폴리머는 140℃ 이상의 가공온도에서 열을 받아 용융이 일어나야 하는 데 가공업체로 이송하기 위해 컨테이너로 운반하게 되면 베일 내에서 섬유가 융착되어 본 가공을 하기 전에 카딩불량이 발생하는 문제점을 가지고 있다. 특히 여름철에 고온의 대기조건에서는 컨테이너가 70℃ 이상 상승하여 베일내의 섬유가 융착이 많이 발생하는 단점이 있어 사용에 제한을 받는다. 이와 같은 문제를 해결하기 위해서는 유리전이온도를 상승시켜야하는 데 폴리에틸렌테레프탈레이트 단독의 경우조차도 80℃ 이상을 유지하지 못하며 공중합체의 비율을 줄이는데에도 한계가 있어 70℃ 이상을 유지하기가 어려워 다른 대처 방안이 요구되어진다.Such polymers have to be heated at a processing temperature of 140 ° C or higher and melted, but when transported to containers for transport to a processing company, there is a problem that carding defects occur before the main processing due to fusion of fibers in the bale. . In particular, in the high-temperature atmospheric conditions in the summer, the container rises by more than 70 ℃ due to the disadvantage that the fibers in the veil are a lot of fusion occurs is limited in use. In order to solve this problem, the glass transition temperature has to be increased. Even in the case of polyethylene terephthalate alone, it cannot maintain the temperature above 80 ° C and there is a limit in reducing the proportion of the copolymer, so it is difficult to maintain the temperature above 70 ° C. This is required.

따라서 본 발명은 방사와 연신에 지장을 주지 않고 저온에서의 열융착문제가 개선된 열접착성 복합섬유를 제공하는 것을 기술적 과제로 한다.Therefore, the present invention is to provide a heat-adhesive composite fiber with improved heat fusion problem at low temperature without disturbing spinning and stretching.

상기한 과제를 해결한 본 발명에 의하면 저융점성분과 고융점 성분으로 되며, 상기 저융점 성분이 섬유방향으로 섬유표면의 적어도 일부를 연속적으로 형성하며 유리전이온도가 60℃ 이상이고 50∼70몰%가 폴리에틸렌테레프탈레이트 단위로 되어 있는 공중합 폴리에스테르 80∼99중량%와 폴리올레핀 20∼1중량%와의 혼합물로 구성됨을 특징으로 하는 열융착성 복합섬유가 제공된다.According to the present invention to solve the above problems, it becomes a low melting point component and a high melting point component, the low melting point component continuously forms at least a part of the fiber surface in the fiber direction, the glass transition temperature is 60 ℃ or more and 50 to 70 mol There is provided a heat-sealing composite fiber, characterized in that the composition is composed of a mixture of 80 to 99% by weight of copolymerized polyester having 20% to 1% by weight of polyolefin comprising polyethylene terephthalate units.

또한 본 발명에 의하면 상기한 저융점 성분이 시스(sheath)부분을 형성하고 고융점 성분이 코어(core)부분을 형성하는 것을 특징으로 하는 열융착성 복합섬유가 제공된다.In addition, the present invention provides a heat-sealing composite fiber, wherein the low melting point component forms a sheath portion and the high melting point component forms a core portion.

이하 본 발명의 열접착성 복합섬유를 바람직한 구현인 시스코어형태를 예로 들어 보다 상세하게 설명하기로 한다. 물론 본 발명의 복합섬유는 시스코어형에 제한 되지 않으며, 예를 들어 사이드-바이-사이드 형태 등과 같은 복합섬유 형태에도 적용될 수 있는 것이다.Hereinafter, the heat-adhesive composite fiber of the present invention will be described in more detail with an example of a cis core form. Of course, the composite fiber of the present invention is not limited to the cis-core type, it can be applied to the composite fiber form, such as, for example, the side-by-side form.

본 발명에 따르는 시스코어형 열접착 복합섬유는 시스부분에 통상의 융점 분석기기로 융점이 나타나지 않는 비결정성 폴리에스테르 공중합체를 포함하며, 코어성분으로는 바람직하게 상대적으로 고융점 성분을 사용하는 열접착성 복합섬유이다.The cis-core type heat-bonded composite fiber according to the present invention includes an amorphous polyester copolymer in which the melting point does not appear in the sheath portion with a conventional melting point analyzer, and the core component is preferably heat-bonding using a relatively high melting point component. It is a sex composite fiber.

바람직하게 시스부분에 포함되는 폴리에스테르 공중합체는 유리전이온도가 60℃ 이상이고 50∼70몰%가 폴리에틸렌테레프탈레이트 단위로 되어 있는 공중합 폴리에스테르이다. 공중합 산성분으로는 이소프탈산이 바람직하나, 그 외에도 통상의 디카르복실산은 모두 가능하다. 예를 들면 프탈산 또는 무수 프탈산 등과 같은 방향족 디카르복실산과 아디프산 또는 석신산 등의 지방족 디카르복실산 등이 가능하다. 또한 디올 성분으로는 에틸렌글리콜이외에도, 1,4-부탄디올, 1,6-헥산디올, 네오펜틸 글리콜 등과 같은 지방족 다가알코올, 사이클로디메탄올(CHDM) 등과 같은 지환족 다가알코올 등도 가능하다.Preferably, the polyester copolymer contained in the sheath portion is a copolymerized polyester having a glass transition temperature of 60 ° C. or more and 50 to 70 mol% of polyethylene terephthalate units. Although isophthalic acid is preferable as a copolymeric acid component, in addition, all normal dicarboxylic acid is possible. For example, aromatic dicarboxylic acids such as phthalic acid or phthalic anhydride and aliphatic dicarboxylic acids such as adipic acid or succinic acid are possible. As the diol component, in addition to ethylene glycol, aliphatic polyhydric alcohols such as 1,4-butanediol, 1,6-hexanediol, neopentyl glycol and the like, and cycloaliphatic polyhydric alcohols such as cyclodimethanol (CHDM) can be used.

본 발명에 의하면 이러한 공중합 폴리에스테르 80∼99중량%, 바람직하기로는 97∼90중량%와 폴리올레핀 20∼1중량%, 바람직하게 10∼3중량%의 비율로 배합하여 시스부분을 구성한다.According to the present invention, the sheath portion is formed by blending 80 to 99% by weight, preferably 97 to 90% by weight, and 20 to 1% by weight of polyolefin, preferably 10 to 3% by weight.

폴리올레핀의 경우 융점이 80℃에서 135℃까지 다양하며 분자량의 경우도 그 폭이 넓으므로 본 발명에서는 가장 적합한 올레핀을 밝히고자 한다. 올레핀의 경우 결정성 폴리머이면서 폴리에스테르 공중합체와 비슷한 융점을 가지고 있으므로 특히 문제가 되는 60∼80℃의 고온에서도 용융이 일어나지 않아 폴리에스테르의 열융착 문제를 해결할 수 있었다.In the case of polyolefins, melting points vary from 80 ° C. to 135 ° C., and their molecular weights are wide, and therefore, the present invention seeks to identify the most suitable olefins. Since olefin has a melting point similar to that of a polyester copolymer, which is a crystalline polymer, melting does not occur even at a high temperature of 60 ° C. to 80 ° C., thereby solving the problem of thermal fusion of polyester.

본 발명에 이용될 수 있는 폴리올레핀으로서는 고밀도 폴리에틸렌, 선형저밀도 폴리에틸렌, 저밀도 폴리에틸렌, 에틸렌-비닐-아세테이트 공중합체 등이 가능하며 이의 단독 또는 블렌드가 가능하다. 특별히 어느 한 종류의 폴리올레핀으로 한정하는 것은 아니다. 폴리올레핀 중에서 가장 바람직하기로는 선형저밀도 폴리에틸렌(LLDPE)이 폴리에스테르와의 상용성 뿐만 아니라 용융성 측면에서도 가장 바람직하다.As the polyolefin that can be used in the present invention, high density polyethylene, linear low density polyethylene, low density polyethylene, ethylene-vinyl-acetate copolymer, and the like can be used alone or in combination thereof. It is not specifically limited to any one kind of polyolefin. Among polyolefins, linear low density polyethylene (LLDPE) is most preferred in terms of meltability as well as compatibility with polyester.

특히 폴리올레핀은 용융흐름지수가 1∼45, 바람직하기로는 15∼30정도인 것이 바람직하다. 용융지수가 너무 낮으면 너무 폴리에스테르와의 점도 차이가 생겨 용융성이 저하되며 너무 높으면 방사성이 저하된다.In particular, the polyolefin has a melt flow index of 1 to 45, preferably 15 to 30. If the melt index is too low, there is a difference in viscosity with the polyester too much, the meltability is lowered, if too high, the radioactivity is lowered.

또한 폴리올레핀의 용융점도도 중요한 척도로 작용하는 바 점도가 실제가공온도인 150℃에서 측정한 결과 500에서 10,000 Pa.S의 점도가 바람직하며 더욱 바람직하기로는 1,000에서 3,000 Pa.s이 적당하다.In addition, the melt viscosity of the polyolefin also acts as an important measure, the viscosity is measured at 150 ℃, the actual processing temperature, the viscosity of 500 to 10,000 Pa.S is preferred, more preferably 1,000 to 3,000 Pa.s.

코아 성분으로 사용하는 고융점 성분으로는 융점이 160℃ 이상인 폴리머가 적합하며, 그 사용가능한 예로는 폴리에틸렌테레프탈레이트, 폴리부틸렌 테레프탈레이트, 폴리 아마이드, 폴리에틸렌테레프탈레이트 공중합체 및 폴리프로필렌 등이 있다.The high melting point component used as the core component is a polymer having a melting point of 160 ° C or higher, and examples of the high melting point component include polyethylene terephthalate, polybutylene terephthalate, polyamide, polyethylene terephthalate copolymer, and polypropylene.

이상 설명한 바와 같은 본 발명의 특징 및 기타의 장점은 후술되는 실시예로부터 보다 명백하게 될 것이다.Features and other advantages of the present invention as described above will become more apparent from the following examples.

하기 실시예에서 나타낸 용어의 정의 및 물리적 성질의 시험 방법은 다음과 같다.Definition of terms and physical properties of the test method shown in the following Examples are as follows.

* 방사성 : 30분 동안 단일 섬유가 1회 이상 파단 되는 생성물을 방사상태 불량으로 하였으며 그 반대의 경우를 양호한 것으로 간주하였다.Radioactive: The product with a single fiber breaking more than once in 30 minutes was considered to be in poor condition and the opposite was considered good.

* 열 융착성 테스트 : 열 접착 섬유를 개섬 과정을 거쳐 50g을 취하여 가로×세로 10cm×10cm인 비닐 백에 넣은 후 스틸밴드(steel band)로 동여 매어 75℃의 열풍 건조기에 밤새 방치 한다. 약 24시간이 경과한 후 밴드를 풀고 섬유의 융착상태를 관찰하여 그 융착 정도를 상/중/하로 구분하였으며 이때 하는 완전히 융착된 상태이다.* Heat sealability test: Take 50g of heat-bonded fiber through the opening process, put it in a plastic bag 10cm × 10cm in width × length, tie it with a steel band, and leave it in a hot air dryer at 75 ℃ overnight. After about 24 hours, the band was unwound and the fusion state of the fiber was observed. The degree of fusion was divided into upper, middle, and lower states.

* 용융흐름지수 : ASTM D1238을 적용하였으며 190℃에서 2160g의 추를 이용하였다.* Melt Flow Index: ASTM D1238 was applied, and a weight of 2160 g was used at 190 ° C.

* 용융점도 : 피지카(Physica) 측정 기기를 이용하였으며 전단속도 1 l/s로 분당 5℃씩 승온하여 측정하였다.* Melt Viscosity: A Physica measuring instrument was used and measured at a temperature of 5 ° C. per minute at a shear rate of 1 l / s.

[실시예 1 ~ 3][Examples 1 to 3]

고 융점 코아성분으로 폴리에틸렌테레프탈레이트(고유 점도 0.63)를 제1 압출기로 방사 온도 290도에서 방사하며 저융점 성분으로 표1과 같이 선형저밀도 폴리에틸렌(LLDPE)을 무정형 폴리에스테르 공중합체(A-PET: 테레프탈산과 이소프탈산을 6:4의 비율로 혼합한 후 에틸렌글리콜을 디올 성분으로 통상의 폴리에스테르 중합과정을 거쳐 제조한 고유점도 0.60이며 유리전이 온도 65℃의 무정형 폴리에스테르 공중합체)와 블랜드하여 제 2압출기로 250도에서 830 m/min로 방사하여 시쓰 코아 형태의 복합사를 얻은 후 4.3배로 연신하여 권축시키고, 수축을 방지하기 위해85℃에서 열처리한 후 51mm의 길이로 절단하여 4.5De' 열접착성 복합섬유 스테이플을 제조하였다. 본 예에서 시스성분과 코아성분의 복합비는 5 : 5 이었다.As a high melting point core component, polyethylene terephthalate (intrinsic viscosity 0.63) is spun with a first extruder at a spinning temperature of 290 ° C. Terephthalic acid and isophthalic acid were mixed at a ratio of 6: 4, and then ethylene glycol was prepared as a diol component by blending with an amorphous polyester copolymer having an intrinsic viscosity of 0.60 and glass transition temperature of 65 ° C.). 2Extruder at 250 degrees at 830 m / min to obtain a composite yarn in the form of sith core, stretched by 4.3 times and crimped, heat treated at 85 ℃ to prevent shrinkage, cut to length of 51mm and cut 4.5De ' Adhesive composite fiber staples were prepared. In this example, the composite ratio of the cis component and the core component was 5: 5.

[실시예 4]Example 4

선형저밀도 폴리에틸렌으로 융융지수(MI) 12의 LLDPE를 이용한 것을 제외하고 실시예 1과 동일한 절차를 반복하였다.The same procedure as in Example 1 was repeated except that LLDPE of melt index (MI) 12 was used as the linear low density polyethylene.

[실시예 5]Example 5

선형저밀도 폴리에틸렌 대신에 고밀도 폴리에텔렌(HDPE)를 이용한 것을 제외하고 실시예 1과 동일한 절차를 반복하였다.The same procedure as in Example 1 was repeated except that high density polyetherene (HDPE) was used instead of linear low density polyethylene.

[비교 예 1][Comparative Example 1]

저 융점 성분으로 무정형 폴리에스테르 공중합체만을 사용한 것을 제외하고 실시예 1과 동일한 절차를 반복하였다.The same procedure as in Example 1 was repeated except that only amorphous polyester copolymer was used as the low melting point component.

[비교 예 2][Comparative Example 2]

선형저밀도 폴리에틸렌으로 융융지수(MI) 1의 LLDPE를 이용한 것을 제외하고 실시예 1과 동일한 절차를 반복하였다.The same procedure as in Example 1 was repeated except that LLDPE of melt index (MI) 1 was used as the linear low density polyethylene.

[비교 예 3][Comparative Example 3]

HDPE의 함량이 30인 것을 제외하고 실시예 5와 동일한 절차를 반복하였다.The same procedure as in Example 5 was repeated except that the HDPE content was 30.

구분division 시스성분Cis component 방사성Radioactive 열융착성Heat sealability 폴리올레핀Polyolefin A-PETA-PET 종류Kinds 용융지수Melt index 용융점도Melt viscosity 함량(wt%)Content (wt%) 함량(wt%)Content (wt%) 실시예 1Example 1 LLDPELLDPE 2020 1,5001,500 33 9797 양호Good Prize 실시예 2Example 2 LLDPELLDPE 2020 1,5001,500 55 9595 양호Good Prize 실시예 3Example 3 LLDPELLDPE 2020 1,5001,500 1010 9090 양호Good Prize 실시예 4Example 4 LLDPELLDPE 1212 3,5003,500 33 9797 양호Good Prize 실시예 5Example 5 HDPEHDPE 2020 3,0003,000 33 9797 양호Good Prize 비교예 1Comparative Example 1 -- -- -- -- 100100 양호Good Ha 비교예 2Comparative Example 2 LLDPELLDPE 1One 1,5001,500 33 9797 불량Bad Ha 비교예 3Comparative Example 3 HDPEHDPE 2020 3,0003,000 3030 7070 불량Bad --

위에 설명한 바와 같이 본 발명에 따르는 열융착성 복합섬유는 방사와 연신에 지장을 주지 않고 열융착성이 우수할 뿐만아니라 저온에서의 열융착문제를 일으키지 않는다.As described above, the heat-sealed composite fiber according to the present invention does not interfere with spinning and stretching, and is excellent in heat sealability and does not cause heat-sealing problems at low temperatures.

Claims (3)

열융착성 복합섬유에 있어서, 저융점성분과 고융점 성분으로 되며, 상기 저융점 성분이 섬유방향으로 섬유표면의 적어도 일부를 연속적으로 형성하며 유리전이온도가 60℃ 이상이고 50∼70몰%가 폴리에틸렌테레프탈레이트 단위로 되어 있는 공중합 폴리에스테르 80∼99중량%와 폴리올레핀 20∼1중량%와의 혼합물로 구성됨을 특징으로 하는 열융착성 복합섬유.In the heat-sealable composite fiber, a low melting point component and a high melting point component are formed, and the low melting point component continuously forms at least a part of the fiber surface in the fiber direction, and has a glass transition temperature of 60 ° C. or higher and 50 to 70 mol%. A heat-sealable composite fiber comprising a mixture of 80 to 99% by weight of a copolyester comprising polyethylene terephthalate units and 20 to 1% by weight of a polyolefin. 제 1 항에 있어서, 폴리올레핀의 용융흐름지수가 1∼45, 용융점도가 500∼10,000 Pa.S인 것을 특징으로 하는 열융착성 복합섬유.The heat-sealable composite fiber according to claim 1, wherein the polyolefin has a melt flow index of 1 to 45 and a melt viscosity of 500 to 10,000 Pa.S. 제 1 항에 있어서, 상기한 저융점 성분이 시스(sheath)부분을 형성하고 고융점 성분이 코어(core)부분을 형성하는 것을 특징으로 하는 열융착성 복합섬유.The heat-sealable composite fiber according to claim 1, wherein the low melting point component forms a sheath portion and the high melting point component forms a core portion.
KR1019990065624A 1999-12-30 1999-12-30 Thermally fusible composite fiber KR100587122B1 (en)

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KR100825886B1 (en) * 2004-08-23 2008-04-30 (주)티엠코프레이션 Interlining and woven fabrics and attaching method interlining to woven fabrics
US8353326B2 (en) 2009-05-18 2013-01-15 Woongjin Chemical Co., Ltd. Three-dimensional fabric with three-layered structure

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KR100825886B1 (en) * 2004-08-23 2008-04-30 (주)티엠코프레이션 Interlining and woven fabrics and attaching method interlining to woven fabrics
US8353326B2 (en) 2009-05-18 2013-01-15 Woongjin Chemical Co., Ltd. Three-dimensional fabric with three-layered structure

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