JPH10273866A - Weather-proof filament nonwoven fabric - Google Patents
Weather-proof filament nonwoven fabricInfo
- Publication number
- JPH10273866A JPH10273866A JP9078701A JP7870197A JPH10273866A JP H10273866 A JPH10273866 A JP H10273866A JP 9078701 A JP9078701 A JP 9078701A JP 7870197 A JP7870197 A JP 7870197A JP H10273866 A JPH10273866 A JP H10273866A
- Authority
- JP
- Japan
- Prior art keywords
- nonwoven fabric
- weather
- core
- sheath
- titanium dioxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 39
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 32
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 16
- 229920000098 polyolefin Polymers 0.000 claims abstract description 13
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229920000728 polyester Polymers 0.000 claims abstract description 12
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims abstract description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 7
- 150000001875 compounds Chemical class 0.000 claims abstract description 7
- 239000000835 fiber Substances 0.000 claims description 23
- 239000000306 component Substances 0.000 claims description 15
- 239000002131 composite material Substances 0.000 claims description 11
- 239000008358 core component Substances 0.000 claims description 8
- 239000012773 agricultural material Substances 0.000 abstract description 2
- 239000004035 construction material Substances 0.000 abstract description 2
- 239000004566 building material Substances 0.000 abstract 1
- 230000001747 exhibiting effect Effects 0.000 abstract 1
- -1 polyethylene terephthalate Polymers 0.000 description 13
- 238000000034 method Methods 0.000 description 10
- 239000004743 Polypropylene Substances 0.000 description 7
- 229920001155 polypropylene Polymers 0.000 description 7
- 230000014759 maintenance of location Effects 0.000 description 6
- 238000009987 spinning Methods 0.000 description 6
- 239000000155 melt Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 239000004594 Masterbatch (MB) Substances 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- MMINFSMURORWKH-UHFFFAOYSA-N 3,6-dioxabicyclo[6.2.2]dodeca-1(10),8,11-triene-2,7-dione Chemical group O=C1OCCOC(=O)C2=CC=C1C=C2 MMINFSMURORWKH-UHFFFAOYSA-N 0.000 description 1
- WSQZNZLOZXSBHA-UHFFFAOYSA-N 3,8-dioxabicyclo[8.2.2]tetradeca-1(12),10,13-triene-2,9-dione Chemical group O=C1OCCCCOC(=O)C2=CC=C1C=C2 WSQZNZLOZXSBHA-UHFFFAOYSA-N 0.000 description 1
- XGIAHMUOCFHQTI-UHFFFAOYSA-N Cl.Cl.Cl.Cl.CC Chemical compound Cl.Cl.Cl.Cl.CC XGIAHMUOCFHQTI-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000003484 crystal nucleating agent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 150000002009 diols Chemical class 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000006224 matting agent Substances 0.000 description 1
- 229920001179 medium density polyethylene Polymers 0.000 description 1
- 239000004701 medium-density polyethylene Substances 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 239000000326 ultraviolet stabilizing agent Substances 0.000 description 1
Landscapes
- Artificial Filaments (AREA)
- Multicomponent Fibers (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば土木資材分
野、建築資材分野、農業資材分野などにおいて優れた耐
候性を発揮する長繊維不織布に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a long-fiber nonwoven fabric which exhibits excellent weather resistance, for example, in the fields of civil engineering materials, construction materials, agricultural materials and the like.
【０００２】[0002]
【従来の技術】従来から、耐候性が要求される土木用、
農業用などに種々の不織布が使用されている。ところ
が、近年、省資源、経済性が見直されており、これま
で、例えば、農業用ハウスの保温用内張りシートなどの
用途において従来の使い捨てに代わり繰り返し使用など
が要求されるようになってきた。これに伴い、従来の不
織布よりもさらに優れた耐候性を具備した不織布が要望
されている。2. Description of the Related Art Conventionally, for civil engineering requiring weather resistance,
Various nonwoven fabrics are used for agricultural purposes and the like. However, in recent years, resource saving and economic efficiency have been reviewed, and in the past, for example, in applications such as heat insulating lining sheets for agricultural houses, repeated use has been required instead of conventional disposable. Accordingly, there is a demand for a nonwoven fabric having even better weather resistance than conventional nonwoven fabrics.
【０００３】従来から前記のような不織布において、耐
候性を具備させる試みは種々行なわれており、主に構成
素材に酸化防止剤、耐熱剤、紫外線安定剤あるいは紫外
線吸収剤が添加されている。しかし、この方法では、高
度な耐候性を要求されている用途には十分な効果が得ら
れていない。また、ポリエステルに表面が不定形シリカ
で被覆された二酸化チタン微粒子を含有させた耐候性ポ
リエステル組成物（特開平６−３２２２４５号公報参
照）が提案されているが、不織布には使用されていな
い。Conventionally, various attempts have been made to impart weather resistance to the above-mentioned nonwoven fabric, and an antioxidant, a heat resistant agent, an ultraviolet stabilizer or an ultraviolet absorber is mainly added to the constituent materials. However, this method has not been able to provide a sufficient effect for applications requiring high weather resistance. Further, a weather-resistant polyester composition containing titanium dioxide fine particles whose surface is coated with amorphous silica (see JP-A-6-322245) has been proposed, but is not used for nonwoven fabrics.
【０００４】[0004]
【発明が解決しようとする課題】本発明はこのような課
題を解決するもので、優れた耐候性を具備する長繊維不
織布を提供しようとするものである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a long-fiber nonwoven fabric having excellent weather resistance.
【０００５】[0005]
【課題を解決するための手段】この課題を解決するため
に、本発明は以下の要旨とするものである。芯成分がポ
リエステル、鞘成分がポリオレフィンの芯鞘型複合長繊
維からなる不織布であって、鞘成分を構成するポリオレ
フィンは、表面がシリカ、アルミナおよびジルコニアか
ら選ばれた１種以上の化合物で被覆された平均粒子径
０．０１〜０．１５μｍの二酸化チタンを０．０５〜１
０重量％含有することを特徴とする耐候性長繊維不織
布。In order to solve this problem, the present invention has the following gist. The core component is polyester, the sheath component is a nonwoven fabric made of a core-sheath type composite long fiber of polyolefin, and the polyolefin constituting the sheath component is coated on the surface with at least one compound selected from silica, alumina and zirconia. Titanium dioxide having an average particle size of 0.01 to 0.15 μm
A weather-resistant long-fiber nonwoven fabric characterized by containing 0% by weight.
【０００６】[0006]
【発明の実施の形態】まず、本発明の耐候性長繊維不織
布を構成する長繊維について説明する。本発明に適用さ
れる複合長繊維の芯成分を形成するポリエステルとして
は、ポリエチレンテレフタレート、ポリブチレンテレフ
タレートあるいはこれらを主骨格とする共重合ポリエス
テルが挙げられ、共重合ポリエステルの場合、酸成分と
してイソフタル酸、アジピン酸などのカルボン酸、ジオ
ール成分としてテトラメチレングリコール、ネオペンチ
ルグリコールなどのグリコール成分を少量含む共重合体
である。共重合ポリエステルを用いる場合、エチレンテ
レフタレート単位あるいはブチレンテレフタレート単位
が８０モル％以上であることが、重合体素材自体の耐熱
性や得られた不織布の強力の点から好ましい。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the long fibers constituting the weather-resistant long-fiber nonwoven fabric of the present invention will be described. Examples of the polyester forming the core component of the composite long fiber applied to the present invention include polyethylene terephthalate, polybutylene terephthalate or a copolymerized polyester having these as main skeletons. In the case of a copolymerized polyester, isophthalic acid is used as an acid component. And copolymers containing a small amount of a carboxylic acid such as adipic acid or a glycol component such as tetramethylene glycol or neopentyl glycol as a diol component. When a copolymerized polyester is used, the content of the ethylene terephthalate unit or the butylene terephthalate unit is preferably at least 80 mol% from the viewpoint of the heat resistance of the polymer material itself and the strength of the obtained nonwoven fabric.
【０００７】本発明において適用されるポリエステルと
しては、極限粘度〔η〕が０．５以上、好ましくは０．
６以上のものが、製糸性および得られる長繊維の強力の
点で好ましい。The polyester used in the present invention has an intrinsic viscosity [η] of 0.5 or more, preferably 0.1 or more.
Those having 6 or more are preferable in view of the spinning property and the strength of the obtained long fiber.
【０００８】本発明に適用される複合長繊維の鞘成分を
形成するポリオレフィンとしては、結晶性ポリプロピレ
ン、高密度ポリエチレン、中密度ポリエチレン、低密度
ポリエチレン、線状低密度ポリエチレンなどが挙げられ
る。これらの中でも、特に融点の高いものが製糸時の紡
出糸条冷却性に優れるために好適であり、結晶性ポリプ
ロピレンが好ましい。また結晶性ポリプロピレンの製糸
性を向上させるためには、ポリプロピレンにエチレンを
ランダム共重合させたものを用いても良い。The polyolefin which forms the sheath component of the composite long fiber applied to the present invention includes crystalline polypropylene, high-density polyethylene, medium-density polyethylene, low-density polyethylene, and linear low-density polyethylene. Among them, those having a particularly high melting point are preferable because of excellent cooling property of the spun yarn at the time of spinning, and crystalline polypropylene is preferable. In addition, in order to improve the spinnability of the crystalline polypropylene, a polypropylene obtained by randomly copolymerizing ethylene with polypropylene may be used.
【０００９】本発明において適用されるポリオレフィン
がポリプロピレンの場合、ＡＳＴＭ−Ｄ１２３８（Ｌ）
に記載の方法に準じて測定したメルトフローレート値
（以下、ＭＦＲと称す）が、４０〜１００ｇ／１０分で
あることが好ましい。また、適用されるポリオレフィン
がポリエチレンの場合、ＡＳＴＭ−Ｄ１２３８（Ｅ）に
記載の方法に準じて測定したメルトインデックス値（以
下ＭＩと称す）が、１０〜４０ｇ／１０分であることが
望ましい。これらの好適な溶融粘度範囲の上限を超える
と、溶融粘度が低すぎるために繊維の均斉度が劣ること
となり、延いては得られる不織布にムラが生じ易くな
る。逆に、好適な溶融粘度範囲の下限未満であると、溶
融粘度が高すぎるために高速製糸性に劣る結果となり、
好ましくない。When the polyolefin applied in the present invention is polypropylene, ASTM-D1238 (L)
The melt flow rate value (hereinafter, referred to as MFR) measured according to the method described in (1) is preferably 40 to 100 g / 10 minutes. When the applied polyolefin is polyethylene, the melt index value (hereinafter referred to as MI) measured according to the method described in ASTM-D1238 (E) is desirably 10 to 40 g / 10 minutes. If the melt viscosity exceeds the upper limit of the preferred melt viscosity range, the melt viscosity is too low, so that the fiber uniformity is inferior, and the resulting nonwoven fabric tends to be uneven. Conversely, if it is less than the lower limit of the preferred melt viscosity range, the melt viscosity is too high, resulting in inferior high-speed spinning properties,
Not preferred.
【００１０】本発明においては、耐候剤として上記の芯
鞘型複合長繊維の鞘成分に、表面がシリカ、アルミナお
よびジルコニアから選ばれた１種以上の化合物で被覆さ
れた平均粒子径０．０１〜０．１５μｍの二酸化チタン
を０．０５〜１０重量％含有する。In the present invention, the sheath component of the above-mentioned core-sheath type composite continuous fiber as a weathering agent is coated with at least one compound selected from silica, alumina and zirconia on the surface and has an average particle diameter of 0.01. ０．０５0.15 μm of titanium dioxide is contained in an amount of 0.05 to 10% by weight.
【００１１】二酸化チタンの表面を被覆する化合物は、
好ましくはシリカ単独またはシリカとアルミナあるいは
ジルコニアとアルミナの組み合わせが良い。そして、表
面被覆化合物と二酸化チタンとの割合は、重量比で６
０：４０〜１０：９０とするのが好ましい。The compound that coats the surface of titanium dioxide is
Preferably, silica alone or a combination of silica and alumina or zirconia and alumina is good. The ratio of the surface coating compound to titanium dioxide is 6% by weight.
The ratio is preferably set to 0:40 to 10:90.
【００１２】二酸化チタンは、平均粒子径が０．０１〜
０．１５μｍのものであることが必要であり、０．０１
μｍ未満のものは製造が難しく、しかも重合体に二酸化
チタンを含有させる際に分散性が悪くなる。一方、０．
１５μｍより大きくなると、紫外線吸収能が低下して得
られる不織布の耐候性が悪くなる。The titanium dioxide has an average particle diameter of 0.01 to
0.15 μm is required, and 0.01
If the particle size is less than μm, it is difficult to produce, and when the polymer contains titanium dioxide, the dispersibility deteriorates. On the other hand, 0.
When it is larger than 15 μm, the ultraviolet absorbing ability is reduced and the obtained nonwoven fabric has poor weather resistance.
【００１３】二酸化チタンの添加量は、ポリオレフィン
に対し、０．０５〜１０重量％とすることが必要であ
る。０．０５重量％未満では不織布にしたときに好まし
い耐候性が得られず、１０重量％より多くなると、製糸
性が悪化し、しかも耐候性の向上が飽和することになっ
て添加量を多くした効果が得られず不経済となる。The amount of titanium dioxide added must be 0.05 to 10% by weight based on the polyolefin. If it is less than 0.05% by weight, favorable weather resistance cannot be obtained when it is formed into a nonwoven fabric, and if it is more than 10% by weight, the spinnability deteriorates and the improvement in weather resistance saturates. The effect is not obtained and it becomes uneconomical.
【００１４】本発明においては、シリカなどで二酸化チ
タンを被覆することが重要である。なぜなら、不織布を
使用したとき、被覆した二酸化チタンが紫外線エネルギ
ーを吸収し、そのために−ＯＨ、Ｏ2 に対してラジカル
を発生させる働きが抑制されて、光活性が低下するため
である。In the present invention, it is important to coat titanium dioxide with silica or the like. This is because, when using nonwoven, coated titanium dioxide absorbs ultraviolet energy, -OH Therefore, it is suppressed functions to generate radicals against O 2, because the light activity decreases.
【００１５】また、本発明において適用される前記重合
体には、各々、必要に応じて、例えば艶消し剤、顔料、
結晶核剤などの各種添加剤を本発明の効果を損なわない
範囲内で添加しても良い。The polymer applied in the present invention may include, as necessary, a matting agent, a pigment,
Various additives such as a crystal nucleating agent may be added as long as the effects of the present invention are not impaired.
【００１６】本発明の長繊維不織布を構成する芯鞘型複
合長繊維において、芯成分と鞘成分の複合比は、用途に
応じて適宜決定すれば良いが、鞘成分が少なすぎると耐
候性が得られないので、通常は芯成分に対する鞘成分の
重量比が約０．５〜３．０の範囲にするのが好ましい。[0016] In the core-sheath composite long fiber constituting the long-fiber nonwoven fabric of the present invention, the composite ratio of the core component and the sheath component may be appropriately determined according to the intended use. Usually, it is preferable that the weight ratio of the sheath component to the core component is in the range of about 0.5 to 3.0.
【００１７】本発明の耐候性長繊維不織布の製造方法に
ついて説明する。本発明の長繊維不織布は、いわゆるス
パンボンド法により効率良く製造することができる。す
なわち、芯成分としてポリエステル重合体チップを用
い、鞘成分としてマスターバッチ法またはドライブレン
ド法で前記耐候剤を混合し所定量含有させたポリオレフ
ィン重合体チップを用い、芯鞘型複合断面となる紡糸口
金を用いて溶融紡糸し、得られた紡出糸条を吸引装置を
用いて、目的繊度となるように牽引細化させて引き取
る。そして、吸引装置から排出された糸条群を開繊させ
た後、コンベアーネット上に集積させてウエブとし、こ
のウエブを熱圧接せしめて芯鞘型複合長繊維不織布を得
ることができる。The method for producing the weather-resistant long-fiber nonwoven fabric of the present invention will be described. The long-fiber nonwoven fabric of the present invention can be efficiently produced by a so-called spunbond method. That is, using a polyester polymer chip as a core component, using a polyolefin polymer chip mixed with the weathering agent by a master batch method or a dry blend method and containing a predetermined amount as a sheath component, a spinneret having a core-sheath type composite cross section. The resulting spun yarn is drawn and thinned to a desired fineness using a suction device, and is taken out. Then, after the yarn group discharged from the suction device is spread, it is accumulated on a conveyor net to form a web, and the web is hot-pressed to obtain a core-sheath type composite long-fiber nonwoven fabric.
【００１８】[0018]
【実施例】以下、実施例により本発明を具体的に説明す
るが、本発明はこれらの実施例に限定されるものではな
い。なお、以下の実施例において各特性値は、次のよう
にして求めた。EXAMPLES The present invention will be described below in detail with reference to examples, but the present invention is not limited to these examples. In the following examples, each characteristic value was obtained as follows.
【００１９】ポリエステルの極限粘度；フェノールと四
塩化エタンとの等重量比の混合溶媒１００ｃｃに試料
０．５ｇを溶解し、測定した。 ポリエチレンのＭＩ（ｇ／１０分）；ＡＳＴＭ−Ｄ１２
３８（Ｅ）に記載の方法に準じて測定した。Intrinsic viscosity of polyester: 0.5 g of a sample was dissolved in 100 cc of a mixed solvent of phenol and ethane tetrachloride at an equal weight ratio, and measured. Polyethylene MI (g / 10 min); ASTM-D12
The measurement was carried out according to the method described in 38 (E).
【００２０】ポリプロピレンのＭＦＲ（ｇ／１０分）；
ＡＳＴＭ−Ｄ１２３８（Ｌ）に記載の方法に準じて測定
した。 長繊維の製糸性；紡糸口金より吐出した紡出糸条を観察
し、糸切れが生じた回数により下記の３段階にて評価し
た。MFR of polypropylene (g / 10 min);
It was measured according to the method described in ASTM-D1238 (L). The yarn forming property of the long fiber: the spun yarn discharged from the spinneret was observed, and the number of times the yarn was broken was evaluated according to the following three grades.
【００２１】 ○；糸切れ回数 ０回／２４時間／口金 △；糸切れ回数 １〜２回／２４時間／口金 ×；糸切れ回数 ３回〜／２４時間／口金 不織布の引張強力（Ｋｇ／５ｃｍ幅）；合繊長繊維不織
布試験法に準じて、東洋ボールドウイン社製テンシロン
ＲＴＭ−５００型を用いて、幅５ｃｍ、長さ３０ｃｍの
試験片を、把持間隔２０ｃｍ、引張速度１０ｃｍ／分の
条件で測定し、１０個の平均値を求めた。○: Number of thread breaks 0 times / 24 hours / clip △: Number of thread breaks 1-2 times / 24 hours / clip ×: Number of thread breaks 3 times / 24 hours / clip Tensile strength of nonwoven fabric (Kg / 5cm) Width); According to the synthetic fiber long-fiber nonwoven fabric test method, a test piece having a width of 5 cm and a length of 30 cm was gripped on a test piece having a width of 5 cm and a length of 30 cm using a Toyo Baldwin Co., Ltd. The measurement was performed, and the average value of 10 samples was obtained.
【００２２】不織布の耐候性〔強力保持率〕（％）；不
織布を屋外にて曝露させ、５カ月後の引張強力を標準状
態で測定し、曝露前の引張強力初期値に対する強力保持
率（％）を次式で示しこれを比較した。The weather resistance of the nonwoven fabric [strength retention] (%): The nonwoven fabric was exposed outdoors and the tensile strength after 5 months was measured in a standard state, and the strength retention relative to the initial value of the tensile strength before exposure (%) ) Is shown by the following equation and compared.
【００２３】強力保持率（％）＝（５カ月後の引張強力
／引張強力初期値）×１００ 曝露前の引張強力初期値に対して７０％以上を保持して
いる場合、耐候性が良好であると評価した。Strength retention (%) = (tensile strength after 5 months / initial tensile strength) × 100 When 70% or more of the initial tensile strength before exposure is maintained, the weather resistance is good. Assessed that there is.
【００２４】実施例１ 芯成分として、融点が２６０℃、極限粘度が０．７０の
ポリエチレンテレフタレートを用い、鞘成分として、Ｍ
Ｉが２０ｇ／１０分、融点１２０℃の高密度ポリエテレ
ンを用いた。このポリエテレンとして先ずマスターバッ
チ法にて表面がシリカで覆われた平均粒子径が０．０１
８μｍで二酸化チタンとシリカが５５：４５の割合であ
る二酸化チタンを含有するものを準備し、これを前記ポ
リエテレンに添加量２．０ｗｔとなるように混合したも
のを用いた。そして、この原料を用いてスパンボンド法
にて目付４０ｇ／ｍ2 の芯鞘型複合長繊維不織布を製造
した。得られた不織布の物性評価および製糸性を表１に
示す。Example 1 Polyethylene terephthalate having a melting point of 260 ° C. and an intrinsic viscosity of 0.70 was used as a core component, and M was used as a sheath component.
I was 20 g / 10 minutes, and high-density polyetherene having a melting point of 120 ° C. was used. First, the average particle diameter of the surface covered with silica by the master batch method is 0.01
A titanium dioxide containing 8 μm of titanium dioxide and silica having a ratio of 55:45 in silica was prepared, and the mixture was mixed with the above-mentioned polyethylene so that the addition amount was 2.0 wt. Using this raw material, a core-sheath type composite long-fiber nonwoven fabric having a basis weight of 40 g / m 2 was produced by a spun bond method. Table 1 shows the evaluation of physical properties and the spinning properties of the obtained nonwoven fabric.
【００２５】実施例２〜５、比較例１〜４ 二酸化チタンを被覆する物質の種類および添加量を変え
て、実施例１と同様にして芯鞘型長繊維不織布を製造し
た。得られた不織布の物性評価および製糸性を表１に示
す。Examples 2 to 5 and Comparative Examples 1 to 4 Core-sheath type long-fiber nonwoven fabrics were produced in the same manner as in Example 1 except that the type and amount of the substance to be coated with titanium dioxide were changed. Table 1 shows the evaluation of physical properties and the spinning properties of the obtained nonwoven fabric.
【００２６】[0026]
【表１】 [Table 1]
【００２７】表１からも明らかなように、実施例１〜５
における不織布は何れも強力保持率において優れ、耐候
性が良好であると評価されるとともに、製糸性において
も高い評価を得たのに対し、比較例１〜３における不織
布は何れも強力保持率において劣り、比較例１および２
における不織布のように製糸性において高い評価を得て
も耐候性不織布として実使用に耐え得るものではなかっ
た。また、比較例４における不織布は強力保持率におい
て優れ、耐候性が良好であると評価されたが、製糸性に
劣り、実使用に耐え得るものではなかった。As is clear from Table 1, Examples 1 to 5
All of the nonwoven fabrics are excellent in the strength retention and evaluated as having good weather resistance, and also obtained a high evaluation in the spinning property, whereas the nonwoven fabrics in Comparative Examples 1 to 3 all have the strength retention in the Inferior, Comparative Examples 1 and 2
However, even if a high evaluation was obtained in the spinnability as in the case of the nonwoven fabric, the nonwoven fabric could not withstand actual use as a weather-resistant nonwoven fabric. Further, the nonwoven fabric of Comparative Example 4 was evaluated as having excellent strength retention and good weather resistance, but was inferior in spinnability and could not withstand practical use.
【００２８】[0028]
【発明の効果】以上のように本発明によれば、芯成分が
ポリエステル、鞘成分がポリオレフィンの芯鞘型複合長
繊維からなる不織布において、鞘成分を構成するポリオ
レフィンには、表面がシリカ、アルミナおよびジルコニ
アから選ばれた１種以上の化合物で被覆された平均粒子
径０．０１〜０．１５μｍの二酸化チタンを０．０５〜
１０重量％含有することにより、耐候性ならびに製糸性
に優れた不織布を提供することができる。As described above, according to the present invention, in a nonwoven fabric comprising a core-sheath type composite continuous fiber having a core component of polyester and a sheath component of polyolefin, the polyolefin constituting the sheath component has silica or alumina And titanium dioxide having an average particle size of 0.01 to 0.15 μm coated with at least one compound selected from zirconia and 0.05 to
By containing 10% by weight, it is possible to provide a non-woven fabric having excellent weather resistance and yarn-making properties.
Claims (1)
レフィンの芯鞘型複合長繊維からなる不織布であって、
鞘成分を構成するポリオレフィンは、表面がシリカ、ア
ルミナおよびジルコニアから選ばれた１種以上の化合物
で被覆された平均粒子径０．０１〜０．１５μｍの二酸
化チタンを０．０５〜１０重量％含有することを特徴と
する耐候性長繊維不織布。A non-woven fabric comprising a core-sheath composite long fiber of a core component of polyester and a sheath component of polyolefin,
The polyolefin constituting the sheath component contains 0.05 to 10% by weight of titanium dioxide having an average particle diameter of 0.01 to 0.15 μm whose surface is coated with at least one compound selected from silica, alumina and zirconia. A weather-resistant long-fiber nonwoven fabric characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9078701A JPH10273866A (en) | 1997-03-31 | 1997-03-31 | Weather-proof filament nonwoven fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9078701A JPH10273866A (en) | 1997-03-31 | 1997-03-31 | Weather-proof filament nonwoven fabric |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10273866A true JPH10273866A (en) | 1998-10-13 |
Family
ID=13669183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9078701A Pending JPH10273866A (en) | 1997-03-31 | 1997-03-31 | Weather-proof filament nonwoven fabric |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10273866A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008025557A1 (en) * | 2006-08-31 | 2008-03-06 | Twd Fibres Gmbh | Textile product and production thereof |
| JP2008221052A (en) * | 2007-03-09 | 2008-09-25 | Unitika Ltd | Laying method of protective mat for water-impervious sheet |
| JP2009183878A (en) * | 2008-02-07 | 2009-08-20 | Osaka Prefecture | Capping sheet laying method and capping sheet used in the method |
-
1997
- 1997-03-31 JP JP9078701A patent/JPH10273866A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008025557A1 (en) * | 2006-08-31 | 2008-03-06 | Twd Fibres Gmbh | Textile product and production thereof |
| JP2008221052A (en) * | 2007-03-09 | 2008-09-25 | Unitika Ltd | Laying method of protective mat for water-impervious sheet |
| JP2009183878A (en) * | 2008-02-07 | 2009-08-20 | Osaka Prefecture | Capping sheet laying method and capping sheet used in the method |
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