KR910005018B1 - Polyester long fiber elastic nonwoven fabric - Google Patents
Polyester long fiber elastic nonwoven fabric Download PDFInfo
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- KR910005018B1 KR910005018B1 KR1019880016795A KR880016795A KR910005018B1 KR 910005018 B1 KR910005018 B1 KR 910005018B1 KR 1019880016795 A KR1019880016795 A KR 1019880016795A KR 880016795 A KR880016795 A KR 880016795A KR 910005018 B1 KR910005018 B1 KR 910005018B1
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Abstract
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Description
제1도는 본 발명의 제조 공정도.1 is a manufacturing process diagram of the present invention.
본 발명은 탄성이 우수한 폴리에스터 장섬유 탄성 부직포에 관한 것으로서, 더욱 구체적으로는 폴리에스터계 열가소성 탄성 폴리머를 주성분으로 하고 이보다 융점이 낮은 폴리에스터계 공중합체를 사용하여 이성분(二成分)복합 필라멘트사를 만들고 이것을 필라멘트 형태로 네트 콘베이어상에 적층시킨 웨브를 열접착하여서 된 탄성이 우수한 100% 폴리에스터 장섬유 탄성 부직포에 관한 것이다. 종래의 부직포는 주로 탄성이 없는 단일성분 폴리에스터와 저융점 공중합체로 된 이성분 복합 필라멘트사를 사용하여 제조된 것이었으며 이것은 단위중량, 제품두께, 제조조건등을 조절하여 어느정도의 탄력성과 유연성을 부여할 수는 있었으나 원료 특성상 탄성, 탄성회복률, 유연성등의 측면에서 한계성이 있었다.The present invention relates to a polyester filament nonwoven fabric having excellent elasticity, and more particularly, to a bicomponent composite filament using a polyester-based thermoplastic elastomer polymer as a main component and having a lower melting point polyester copolymer. The present invention relates to a 100% polyester long fiber elastic nonwoven fabric having excellent elasticity by making a yarn and thermally bonding a web laminated on a net conveyor in the form of a filament. Conventional nonwoven fabrics were manufactured using bicomponent composite filament yarns composed mainly of non-elastic single component polyester and low melting point copolymers, which were adjusted to a certain degree of elasticity and flexibility by adjusting unit weight, product thickness, and manufacturing conditions. Although it could be given, there were limitations in terms of elasticity, elastic recovery rate, and flexibility in terms of raw material properties.
본 발명은 이와같은 문제점을 해결한 것으로서 이하 상세히 설명하면 다음과 같다.The present invention solves such a problem as described in detail below.
본 발명에 사용되는 2성분 복합 폴리에스터 필라멘트사는 아래와 같은 식(I)으로 표시되는 열가소성 탄성 폴리머 70-90중량%와 식(II)으로 표시되는 저융점 폴리에스터 공중합체 10-30중량%로 구성되어 있다.The bicomponent composite polyester filament yarn used in the present invention is composed of 70-90 wt% of the thermoplastic elastomer represented by the following formula (I) and 10-30 wt% of the low melting polyester copolymer represented by the formula (II). It is.
위 식에서 ;In the above equation;
m : 50-80의 정수,m: an integer of 50-80,
n : 30-50의 정수,n is an integer of 30-50,
D : 메틸렌 글리콜, 1.4-부틸렌 글리콜, 1.6-헥사디올 또는 이들의 혼합물중에서 2개의 하이드록시가 탈락된 2가의 라디칼.D: A divalent radical in which two hydroxy have been eliminated in methylene glycol, 1.4-butylene glycol, 1.6-hexadiol or a mixture thereof.
R : 테리프탈산, 이소프탈산 또는 이들의 혼합물에서 2개의 카르복실기가 탈락된 2가의 라디칼.R is a divalent radical in which two carboxyl groups are eliminated in terephthalic acid, isophthalic acid or a mixture thereof.
G : 폴리에틸렌 글리콜, 폴리프로필렌 글리콜, 폴리테트라 글리콜에서 2개의 하이드록시기가 탈락된 2가의 라디칼이다.G is a divalent radical in which two hydroxy groups have been eliminated in polyethylene glycol, polypropylene glycol, and polytetra glycol.
위 식에서 ; m,n : 1-3의 정수이고 2인 것이 특히 좋다.In the above equation; m, n is an integer of 1-3 and 2 is especially preferable.
식(I)의 열가소성 탄성 폴리머는 하드세그먼트(1)부분 15-50%와 소프트 세그먼트(2)부분 50-75%로 되어 있다.The thermoplastic elastomer of formula (I) consists of 15-50% of the hard segment (1) part and 50-75% of the soft segment (2) part.
식(II)의 저융점 폴리에스터 공중합체는 융점이 70℃-150℃이며, 식(II)중에서 (4)부분이 5-15몰%인 것이 좋으며 5몰% 이하에서는 융점 관리하기가 어렵다.The low-melting polyester copolymer of formula (II) has a melting point of 70 ° C-150 ° C, preferably 5-15 mol% of part (4) in formula (II), and difficult to manage melting point of 5 mol% or less.
본 발명의 부직포는 아래와 같은 방법으로 제조한다.The nonwoven fabric of the present invention is produced by the following method.
압출기(A), (B)를 통해서 각각 압출이 된 용융상태의 2성분의 폴리머는 이송관인 매니폴더와 계량토출장치가 있는 스피닝 블록을 거친 다음 팩으로 들어가고 하단의 방사구금을 통과하여 필라멘트 형태로 방사된다. 이때, 한 개의 팩 및 방사구금으로 두 종류의 폴리머를 토출하기 위해서 기존의 팩과는 상이한 형태를 가진다. 또한 네트 콘베이어상에 필라멘트를 균일하게 분산을 시키기 위해서 분산기를 설치하며, 그 상단, 구금하단 사이에 필라멘트를 냉각-고화시키기 위한 냉각장치가 위치한다. 갑자기 고온 및 압력을 받을 경우 필라멘트가 손상을 받는 것을 방지하기 위해 예열장치를 거치게 되며, 열접착 로울러에서 최종적으로 열접착이 일어나는데 이때 가열온도는 100-180℃ 이다.The melted bicomponent polymer extruded through the extruder (A) and (B), respectively, passes through the manifold, the transfer pipe, and the spinning block with the metered discharge device, enters the pack and passes through the spinneret at the bottom to form a filament. Radiated. At this time, in order to discharge the two types of polymer in one pack and spinneret has a different form from the conventional pack. In addition, a disperser is installed to uniformly disperse the filament on the net conveyor, and a cooling device for cooling-solidifying the filament is located between the upper end and the lower end of the cap. In case of sudden high temperature and pressure, the filament is preheated to prevent the damage. Finally, the thermal bonding occurs in the thermal bonding roller. The heating temperature is 100-180 ℃.
상기와 같은 방법으로 제조된 본 발명의 부직포는 유연성이 우수하며, 특히 저온(-70℃)에서도 유연성을 유지하는 내한성이 좋고, 내약품, 내오일성이 우수하며, 가소제를 사용하지 않아 위생적인 측면에서도 유리하며, 유연성이 좋고 특히 탄성 및 탄성회복력이 우수한 장점을 가진다.The nonwoven fabric of the present invention prepared by the above method is excellent in flexibility, especially good cold resistance to maintain flexibility even at low temperatures (-70 ℃), excellent chemical resistance, oil resistance, hygienic aspects without using a plasticizer It is also advantageous in terms of flexibility, good flexibility and particularly good elasticity and elastic recovery.
이하 실시예 및 비교예에 의해 더욱 상세히 설명한다.It will be described in more detail by the following Examples and Comparative Examples.
[실시예]EXAMPLE
융점 210℃, 고유점도 1.5인 분자구조중, 소프트 세그멘트 성분(Poly Butadiene telephthalate)이 60%, 하드세그먼트 성분(Polyester tetra Methylene Glycol)이 40%인 열가소성 탄성 폴리머를 90중량%로 하고, 디메틸 테리프탈레이트, 에틸렌 글리콜, 아세틱 애시드로된 융점 120℃, 고유점도 0.7인 저융점 폴리에스터계 공중합체를 10중량%로 하여 방사구금 구경 0.6mm, 구금공수 10인 구금을 사용 50g/m2의 부직포를 제조하였다.In a molecular structure having a melting point of 210 ° C. and an intrinsic viscosity of 1.5, 90% by weight of a thermoplastic elastomer having 60% of a soft butadiene telephthalate and 40% of a hard segment component (polyester tetra methylene glycol) is dimethyl terephthalate. A non-woven fabric of 50 g / m 2 using a spinneret aperture of 0.6 mm and a prisoner of 10 prisoners with 10 wt% of a low melting point polyester copolymer having a melting point of 120 ° C. and an intrinsic viscosity of 0.7 wt. Prepared.
[비교예 1]Comparative Example 1
융점 258℃, 고유점도 0.65인 정규 폴리에스터 폴리머를 90중량% 하고 상기 실시예와 동일한 저융점 폴리에스터계 공중합체를 10중량%로 하여 동일방법으로 부직포를 제조하였다.A nonwoven fabric was prepared in the same manner using 90 wt% of a normal polyester polymer having a melting point of 258 ° C and an intrinsic viscosity of 0.65 and 10 wt% of the same low melting polyester copolymer as in the above example.
[비교예 2]Comparative Example 2
실시예와 동일한 열가소성 탄성 폴리머와 저융점 폴리에스터계 공중합체를 각각 50중량%로 하여 동일방법으로 부직포를 제조하였다.Nonwoven fabrics were prepared in the same manner using the same thermoplastic elastomer and the low-melting polyester copolymer as 50 wt%, respectively.
이하, 물성을 비교하면 다음과 같다.Hereinafter, the physical properties are compared as follows.
1. 유연성1. Flexibility
1) 시험방법 및 관련규격 : JISL 1096-19791) Test method and related standards: JISL 1096-1979
2) 시험결과(cm)2) Test result (cm)
주) 종방향이라 함은 부직포 시트(Sheet) 진행방향을 말함.Note) Longitudinal direction refers to the nonwoven fabric sheet advancing direction.
※측정방법※How to measure
시료가 45℃로 굽혀지는데 필요한 길이(cm), 즉 필요길이가 짧을수록 유연한 것임.The length (cm) required for the sample to bend at 45 ° C, i.e. the shorter the required length, the more flexible.
2. 신장 회복률2. Kidney Recovery Rate
1) 시험방법 및 관련규격 : JISL 1096-19791) Test method and related standards: JISL 1096-1979
2) 시험결과(%)2) Test result (%)
주) 시험포 길이는 20cm이며, 인장시간은 5초로 하였다.Note) The test cloth was 20 cm in length and the tensile time was 5 seconds.
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KR1019880016795A KR910005018B1 (en) | 1988-12-16 | 1988-12-16 | Polyester long fiber elastic nonwoven fabric |
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KR1019880016795A KR910005018B1 (en) | 1988-12-16 | 1988-12-16 | Polyester long fiber elastic nonwoven fabric |
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KR910005018B1 true KR910005018B1 (en) | 1991-07-20 |
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