JP2004044040A - Fiber and woven fabric having ultraviolet light-shielding effect - Google Patents

Fiber and woven fabric having ultraviolet light-shielding effect Download PDF

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Publication number
JP2004044040A
JP2004044040A JP2002206283A JP2002206283A JP2004044040A JP 2004044040 A JP2004044040 A JP 2004044040A JP 2002206283 A JP2002206283 A JP 2002206283A JP 2002206283 A JP2002206283 A JP 2002206283A JP 2004044040 A JP2004044040 A JP 2004044040A
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Japan
Prior art keywords
fiber
ultraviolet
shielding effect
woven fabric
fine particles
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JP2002206283A
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Japanese (ja)
Inventor
Nichishun Kan
簡 日春
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Nan Ya Plastics Corp
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Nan Ya Plastics Corp
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Priority to JP2002206283A priority Critical patent/JP2004044040A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To improve an ultraviolet light-shielding effect in a polyester fiber and improve spinning productivity, fiber strength, fiber color and reduction of wear in a thread handling area. <P>SOLUTION: The fiber having the ultraviolet light-shielding effect is provided. Inorganic titanium dioxide fine particles smaller than 100 nm average particle diameter in an amount of ≤ 1 wt.% are added to the interior of the fiber and a potassium tripolyphosphate dispersing agent is further added thereto. As a result, aggregation of titanium dioxide fine particles is prevented and these fine particles are uniformly dispersed to improve the ultraviolet-shielding effect and reduce wear in the thread handling area. The weight of the fiber having the ultraviolet light-shielding effect is ≥50% based on total weight of woven fabric and when a rate of hole area of the woven fabric is ≥0.7 and ≤25%, UPF (ultraviolet protective factor) is ≥40%. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、紫外線遮蔽効果を有する繊維および織物に関するもので、特に、該繊維内に1重量%以下の平均粒径が100ナノメートル(nm)より小さい無機二酸化チタン微粒子を添加して紫外線遮蔽効果をもたせた繊維、および該繊維を用いて製造した織物に関する。紫外線遮蔽効果を有する繊維の重量は織物全重量の50%以上であり、且つ該織物の開孔率が0.7%以上25%以下のときには、UPF(紫外線防護ファクター)は40%以上となる。
【0002】
【従来の技術および発明が解決しようとする課題】
近年、屋外での活動量が大幅に増えてきたことにより、市場では紫外線遮蔽効果を有する織物、特に運動着、ゴルフウェア、釣り用ウェア、ユニフォーム、帽子、傘、カーテンなどに対するニーズが拡大している。
【0003】
紫外線遮蔽効果を有する繊維および織物の開発面では、織物の組織密度を高める、或いは蛍光増白剤などを添加するといった紫外線遮蔽効果を改善する技術がすでに出現しているが、織物の組織密度を高めると通気性が悪くなり、紫外線遮蔽効果に対する要求が強くなる夏季の織物に不適であった。また蛍光増白剤を使用することは、蛍光増白剤の紫外線反射効率が悪いため、皮膚に直接触れる織物の用途として適当でなかった。
【0004】
近年よく使用されているのは、繊維中に紫外線反射剤または紫外線吸収剤を添加する、或いは紫外線反射剤および紫外線吸収剤を合わせて使用する技術である。紫外線反射剤および紫外線吸収剤の成分は、無機化合物または有機化合物に分かれるが、有機化合物を用いると染色時に繊維の物性が影響を受けやすいため、無機化合物がよく使われている。無機化合物のうち滑石、カオリン、酸化亜鉛、酸化鉄、二酸化チタンは紫外線反射剤として使用され、なかでも可視光線や紫外線の反射効果が優れた二酸化チタンがよく使用されている。またアルフォール、ベンゾフェノン(Benzophenone)、ベンゾトリアゾール(Benzotriazole)、シアノアクリレート(Cyanoacrylate)といった化合物が紫外線吸収剤として用いられている。
【0005】
紫外線反射剤および紫外線吸収剤は紡糸の際に直接繊維中に加えても、或いは後処理の段階で織物の表面に塗布する方式で加えてもよいが、塗布方式では織物の隙間を塞いでしまうため、通気性が悪くなり、着用時に暑く感じられ、また直接繊維に加えるわけではないので、幾度か洗濯しているとその表面上の処理剤が落ちて、紫外線遮蔽効果が薄れるため、通常この方式の使用はあまり提唱されていない。
【0006】
紫外線の遮蔽効果改善に関する発明では、例えば日本特開平5−148734号公報、名称:「紫外線遮蔽性を有する繊維構造体および該構造体を用いた繊維製品」が、繊維中に1重量%以上の紫外線反射剤または吸収剤を添加した通気度が5ml/cm以上の繊維構造体を開示しており、波長290〜320nmの紫外線に対する透過率は5%以下、波長290〜400nmの紫外線に対する透過率は10%以下、波長400〜1200nmの可視光線に対する反射率は60%以上となっている。
【0007】
日本特開平5−93343号公報、名称:「紫外線遮蔽性に優れた布帛」では、芯部に5〜40重量%の金属酸化物を含んだ紫外線遮蔽性を有する芯/鞘構造の繊維および該繊維を使用して製造した布帛を開示している。該織物のカバーファクター(cover factor)は700〜1300で、編み物のカバーファクターは200〜500、布帛の紫外線透過率は10%以下である。
【0008】
また日本特開平5−186942号公報、名称:「編み物」では、繊度が1dpf(denier per filament)以上の疎水性繊維を主体とする表面層と、可視光線および近赤外線を反射できる3重量%以上の無機化合物を含む繊維を編んだ裏面層および接結層からなる二重構造をもった編み物を開示している。
【0009】
上記3つの発明で開示された繊維の紫外線遮蔽性を改善する技術は、いずれも重量比で少なくとも1%以上、高いものでは40%に至る紫外線反射性または吸収性を備えた金属化合物を添加することにより達成されているが、大量の金属化合物が繊維内に入ると、紡糸の生産性が落ち、繊維の強度が低下し、繊維の色彩が黄色に変色するといった問題が発生する以外に、大量の金属化合物が繊維表面に分散されるため、後段階で繊維を使って製織、染色する加工過程において、加工機械の糸道が極めて磨耗しやすく、製品の品質に影響するほか、加工機械の使用寿命が大幅に縮まり、製造コストが増大するといった問題を有していた。
【0010】
【課題を解決するための手段】
上記課題に鑑み、本発明者は研究と改善を重ね、繊維中に紫外線反射効果を有する平均粒径が100ナノメートル(nm)より小さい無機二酸化チタン微粒子を加え、また例えばトリポリ燐酸カリウム(potassium tripolyphosphate)などの分散剤を加えると、繊維上の分布面積が増大し、二酸化チタン微粒子が凝集する現象を防ぐことができ、紫外線反射効果が明らかに向上するほか、紡糸生産性、繊維強度、繊維色彩、糸道の磨耗などが改善できることに気づき、本発明を完成した。
【0011】
本発明は繊維中に平均粒径が100ナノメートル(nm)より小さい紫外線反射効果を有する無機二酸化チタン微粒子を加えるもので、使用する二酸化チタン微粒子がナノメートル級であるため粒径が極めて微細であり、繊維中に加えられると繊維上の分布面積が増大し、分布面積が増大すると紫外線反射効果は当然顕著に向上するので、紫外線の遮蔽効果が上がり、従って添加量を減らすことができ、生産コストの低下につながるほか、紡糸生産性、繊維強度、繊維色彩、糸道に対する磨耗性を改善できる。本発明において繊維中に加えるナノメートル級の二酸化チタン微粒子の添加量は1重量%以下である。洗濯を重ねるうちに紫外線遮蔽効果が薄れてくることを防ぐため、二酸化チタン微粒子を繊維中に加える際には直接加えることとし、後処理において塗布する方式を用いない。繊維中に直接加える方式は重合の過程で加えるか、または二酸化チタン微粒子のマスターバッチ(masterbatch)を作製し紡糸の過程で加えるかするが、いずれを採っても、二酸化チタン微粒子が凝集しないように注意が必要である。凝集現象が発生すると、紡糸生産性に大きく影響するほか、二酸化チタン微粒子の繊維上の分布面積が減少し、紫外線遮蔽性が低下する。二酸化チタン微粒子の凝集を防ぐため、二酸化チタン微粒子の溶液を調合する際にトリポリ燐酸カリウム(potassium tripolyphosphate)などの分散剤を加入するとよい。
【0012】
公知技術からわかるように、織み物の組織および厚さは紫外線遮蔽効果に影響する。織み物の組織が密であるほど、その通気度や開孔率は低くなり、或いは織み物の厚さが厚くなるほど、その紫外線遮蔽性は向上するが、一般に紫外線遮蔽性が要求される織み物の用途はほとんどが夏季に使用されるものであり、織み物の通気度や開孔率が低すぎたり、または厚さが厚いと、着用したときの快適性に影響する。オーストラリア/ニュージーランド規格AS/NZS4399:1996 Sun Protective Clothing−Evaluation and Classification基準における紫外線防護ファクターUPF(Ultraviolet Protective Factor、以下「UPF」)と紫外線遮蔽効果に関する評価に基づくと、UPFが15〜24のときには、その紫外線遮蔽効果は「良い」(Good protection)で、UPFが25〜39では「大変良い」(Very Good protection)、UPFが40〜50または50以上になると「特に優れている」(Excellent protection)となる。
【0013】
織物を着用したときの快適性をさらに向上させるため、本紫外線遮蔽効果を有する繊維を生産する際に紡糸段階において、例えば十字型、Y字型、W字型などの異型断面をもつ紡糸口金(spinneret)を使用し、かかる異型断面の繊維の導水溝や大きな表面積を利用して紫外線遮蔽性および吸湿排汗効果をもつ織物を製造することもでき、該織物は特に夏季のカジュアル用に適している。
【0014】
測定方法
(1)UPFの測定
オーストラリア/ニュージーランド規格AS/NZS4399:1996基準で測定する。
(2)織物の開孔率の測定
測定方法は、織物を倍率10〜50倍の光学顕微鏡下におき、光源を織物の内側に置いて織物に光を通して写真をとると、写った写真の白色部分が織物の開孔部となる。写真中の被測定織物全体の総面積に占める白色部分の総面積を計算し、そのパーセンテージが織物の開孔率である。
(3)ヤーンの磨耗性の測定
測定するヤーンを300m/分の速度で、0.5グラム/デニール(gm/denier)の張力下において、直径0.25mmの銅線と摩擦させ、銅線がヤーンの摩擦によって断裂したときのヤーンが通過した長さを記録する。ヤーンの通過した長さが長いほど、被測定ヤーンの磨耗性が高くないことを示す。
【0015】
【実施例】
実施例1
平均粒径100ナノメートル(nm)以下で0.5重量%および平均粒径0.3μm以上で0.4重量%の、紫外線反射効果を有する無機二酸化チタン微粒子含有のポリエステルチップを添加し、紡温290℃、紡速3000m/分でPOY(Partially Oriented Yarn)を製造し、さらにPOYを仮撚りして、600m/分の速度で紫外線遮蔽効果を有するDTY(Draw Textured Yarn)を製造する。
【0016】
実施例2
紡糸および仮撚りの条件は実施例1と同様にして、紫外線遮蔽効果を有するDTYを生産するが、使用するポリエステルチップ中に、平均粒径が100ナノメートル(nm)以下の紫外線反射効果を有する無機二酸化チタン微粒子を添加し、添加量を0.9重量%に増加させる。
【0017】
比較例1
紡糸および仮撚りの条件は実施例1と同様にして、紫外線遮蔽効果を有するDTYを製造するが、使用するポリエステルチップ中に、平均粒径が0.3μm以上の紫外線反射効果を有する無機二酸化チタン微粒子だけを添加して、添加量を0.9重量%にする。
【0018】
比較例2
紡糸および仮撚りの条件は実施例1と同様にして、紫外線遮蔽効果を有するDTYを製造するが、使用するポリエステルチップ中に、平均粒径が0.3μm以上の紫外線反射効果を有する無機二酸化チタン微粒子だけを添加して、添加量を1.6重量%に増加させる。
【0019】
「評価結果」
実施例1、実施例2、比較例1、比較例2で生産した紫外線遮蔽効果を有するDTYの規格は、繊度がいずれも75デニール(Denier)、糸条数がいずれも72本で、それを経緯として一般的な75デニール72本のDTYを用いて杼織1/1の平織組織にし、縦糸密度=112本/インチ、横糸密度=112本/インチ、坪量=92g/m、布の厚さ=0.28mm、織物の開孔率=10.6%となる。それぞれのヤーン磨耗性(m)及び織物UPF(%)の結果を表1に示す。
【表1】

Figure 2004044040
【0020】
実施例1、実施例2、比較例1、比較例2で製造した紫外線遮蔽効果を有するDTYの規格は、繊度がいずれも150デニール、糸条数がいずれも144本で、編織22GPKで編み、坪量=220g/m、布の厚さ=1.0mm、織物の開孔率=5.3%となる。それぞれの織物UPF(%)の結果を表2に示す。
【表2】
Figure 2004044040
【0021】
上記実験の結果からわかるように、織物の開孔率が大きいほど紫外線遮蔽効果が劣り、開孔率が比較的大きいときに、本発明を使用した繊維中に1.0重量%以下の平均粒径が100ナノメートル(nm)より小さい紫外線反射効果を有する無機二酸化チタン微粒子を添加し、該紫外線遮蔽効果を有する繊維を用いて製造した織物は、該織物の紫外線防護ファクターUPFが、同じ添加量で平均粒径が0.3μm以上の紫外線反射効果を有する無機二酸化チタン微粒子の繊維で製造した織物より明らかに優れている。平均粒径が100ナノメートル(nm)以下の無機二酸化チタン微粒子の繊維を使用して製造した織物と同じUPFを求めるのであれば、平均粒径が0.3μm以上の紫外線反射効果を有する無機二酸化チタン微粒子の添加量を増加させる必要があるが、添加量を増加させると、ヤーンの磨耗性が明らかに劣り、加工機械の糸道が磨耗しやすくなり、加工機械の使用寿命が縮まり、製品の品質が低下する。
【0022】
本発明に関する紫外線遮蔽効果を有する繊維で製造した織物は、織物の開孔率が25%のときにはそのUPFが40%を超えるため、夏季に本発明による繊維で製造した織物を使用すれば、優れた紫外線遮蔽性を有するだけでなく、皮膚の老化や日焼け、発癌性を防止できるほか、通気性がよく、着用時の快適性が向上する。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a fiber and a woven fabric having an ultraviolet shielding effect, and more particularly, to an inorganic titanium dioxide fine particle having an average particle size of 1% by weight or less and less than 100 nanometers (nm) added to the fiber. And a woven fabric produced using the fiber. The weight of the fiber having the ultraviolet shielding effect is 50% or more of the total weight of the woven fabric, and when the porosity of the woven fabric is 0.7% or more and 25% or less, the UPF (ultraviolet protection factor) becomes 40% or more. .
[0002]
2. Description of the Related Art
In recent years, the amount of outdoor activities has greatly increased, and in the market, the need for fabrics having an ultraviolet shielding effect, especially sportswear, golf wear, fishing wear, uniforms, hats, umbrellas, curtains, etc. has been expanding. I have.
[0003]
In the development of fibers and fabrics that have an ultraviolet shielding effect, techniques for improving the ultraviolet shielding effect, such as increasing the tissue density of the fabric or adding a fluorescent whitening agent, have already appeared. When it is increased, the air permeability deteriorates, and it is not suitable for summer fabrics in which the demand for the ultraviolet ray shielding effect becomes strong. Also, the use of a fluorescent whitening agent was not suitable for use in fabrics that directly touch the skin because of the poor ultraviolet reflection efficiency of the fluorescent whitening agent.
[0004]
A technique often used in recent years is a technique of adding an ultraviolet reflector or an ultraviolet absorber to a fiber, or using a combination of an ultraviolet reflector and an ultraviolet absorber. The components of the ultraviolet reflector and the ultraviolet absorber are divided into inorganic compounds and organic compounds. When an organic compound is used, the physical properties of the fiber are easily affected at the time of dyeing. Therefore, the inorganic compound is often used. Of the inorganic compounds, talc, kaolin, zinc oxide, iron oxide, and titanium dioxide are used as ultraviolet reflectors, and among them, titanium dioxide, which has an excellent effect of reflecting visible light and ultraviolet light, is often used. Further, compounds such as alphor, benzophenone, benzotriazole, and cyanoacrylate are used as ultraviolet absorbers.
[0005]
The UV-reflecting agent and UV-absorbing agent may be added directly into the fiber at the time of spinning, or may be added by applying it to the surface of the woven fabric at the stage of post-treatment. For this reason, the air permeability deteriorates, it feels hot when worn, and it is not directly added to the fiber, so if you wash it several times, the treating agent on the surface will fall off and the UV shielding effect will be weakened, so this is usually The use of the scheme has not been advocated much.
[0006]
In the invention relating to the improvement of the effect of shielding ultraviolet rays, for example, Japanese Patent Application Laid-Open No. 5-148734, entitled "A fiber structure having ultraviolet shielding properties and a fiber product using the structure" contains 1% by weight or more in the fiber. Disclosed is a fibrous structure having an air permeability of 5 ml / cm 2 or more to which an ultraviolet reflecting or absorbing agent is added. The transmittance for ultraviolet rays having a wavelength of 290 to 320 nm is 5% or less, and the transmittance for ultraviolet rays having a wavelength of 290 to 400 nm is disclosed. Is 10% or less, and the reflectance for visible light having a wavelength of 400 to 1200 nm is 60% or more.
[0007]
Japanese Unexamined Patent Publication (Kokai) No. 5-93343, entitled "Fabrics Excellent in UV-Shielding Properties", discloses a core / sheath fiber having a UV-shielding property containing 5 to 40% by weight of a metal oxide in a core. A fabric made using fibers is disclosed. The cover factor of the woven fabric is 700 to 1300, the cover factor of the knitted fabric is 200 to 500, and the ultraviolet transmittance of the fabric is 10% or less.
[0008]
Japanese Patent Application Laid-Open No. 5-186942, entitled "Knitting", has a surface layer mainly composed of a hydrophobic fiber having a fineness of 1 dpf (denier per filament) or more, and 3% by weight or more capable of reflecting visible light and near infrared rays. Discloses a knitted fabric having a double structure composed of a back layer knitted with a fiber containing an inorganic compound and a binding layer.
[0009]
The techniques disclosed in the above three inventions for improving the ultraviolet shielding properties of the fibers all add a metal compound having ultraviolet reflectivity or absorptivity of at least 1% or more by weight, and as high as 40%. However, when a large amount of metal compound enters the fiber, the spinning productivity decreases, the strength of the fiber decreases, and the color of the fiber changes to yellow. The metal compound is dispersed on the fiber surface, so in the process of weaving and dyeing using fibers in the later stage, the yarn path of the processing machine is extremely worn, affecting the quality of the product and using the processing machine There is a problem that the life is greatly shortened and the manufacturing cost is increased.
[0010]
[Means for Solving the Problems]
In view of the above problems, the present inventor has made repeated studies and improvements, and has added inorganic titanium dioxide fine particles having an average particle diameter of less than 100 nanometers (nm) having an ultraviolet reflective effect to fibers, and for example, potassium tripolyphosphate (potassium tripophosphate). ) Increases the distribution area on the fiber, prevents the aggregation of titanium dioxide fine particles, and significantly improves the UV reflection effect, as well as spinning productivity, fiber strength, and fiber color. As a result, the present invention was completed by realizing that the abrasion of the yarn path could be improved.
[0011]
According to the present invention, inorganic titanium dioxide fine particles having an ultraviolet reflection effect having an average particle size of less than 100 nanometers (nm) are added to the fiber. Since the titanium dioxide fine particles used are of the nanometer class, the particle size is extremely fine. Yes, when added to the fiber, the distribution area on the fiber increases, and when the distribution area increases, the ultraviolet ray reflection effect naturally increases remarkably, so that the ultraviolet ray shielding effect increases, so that the amount of addition can be reduced, and the production amount can be reduced. In addition to lowering costs, spinning productivity, fiber strength, fiber color, and abrasion on the yarn path can be improved. In the present invention, the amount of the nanometer-scale titanium dioxide fine particles added to the fiber is 1% by weight or less. In order to prevent the ultraviolet ray shielding effect from weakening during repeated washing, the titanium dioxide fine particles are added directly to the fibers when they are added, and a method of applying in the post-treatment is not used. The method of adding directly into the fiber is to add it in the course of polymerization or to prepare a master batch of titanium dioxide fine particles and add it in the process of spinning. Caution must be taken. When the agglomeration phenomenon occurs, the spinning productivity is greatly affected, and the distribution area of the titanium dioxide fine particles on the fiber is reduced, so that the ultraviolet shielding property is reduced. In order to prevent aggregation of the titanium dioxide fine particles, a dispersing agent such as potassium tripolyphosphate may be added when the solution of the titanium dioxide fine particles is prepared.
[0012]
As can be seen from the prior art, the texture and thickness of the weave affect the UV shielding effect. The denser the texture of the woven material, the lower its air permeability and porosity, or the thicker the thickness of the woven material, the better its ultraviolet shielding properties, but generally requires ultraviolet shielding properties. Most uses of the woven fabric are used in summer, and if the woven fabric has too low aeration or porosity or is too thick, it affects comfort when worn. Australian / New Zealand Standard AS / NZS4399: 1996 Ultraviolet Protection Factor UPF (Ultraviolet Protective Factor, hereinafter referred to as "UPF") in the Sun Protective Closing-Evaluation and Classification Standards, and based on the evaluation of the UVF, the UPF is 24, and when the UPF is 24, The ultraviolet ray shielding effect is “good” (Good protection), when the UPF is 25 to 39, “very good” (Very Good protection), and when the UPF is 40 to 50 or 50 or more, “excellent protection” (Excellent protection). Becomes
[0013]
In order to further improve the comfort when wearing the woven fabric, a spinneret having an irregular cross-section such as a cross, a Y-shape, or a W-shape (e.g. Spinneret) can be used to produce a fabric having an ultraviolet shielding property and a moisture absorbing and sweating effect by utilizing the water guiding groove and the large surface area of the fiber having the irregular cross section, and the fabric is particularly suitable for summer casual use. I have.
[0014]
Measurement method (1) Measurement of UPF It is measured according to Australian / New Zealand standard AS / NZS4399: 1996 standard.
(2) Measurement of porosity of woven fabric The measurement method is as follows. The woven fabric is placed under an optical microscope with a magnification of 10 to 50 times, and a light source is placed inside the woven fabric. The portion becomes the aperture of the fabric. The total area of the white portion in the total area of the measured fabric in the photograph is calculated, and the percentage is the porosity of the fabric.
(3) Measurement of abrasion property of yarn The yarn to be measured was rubbed with a copper wire having a diameter of 0.25 mm at a speed of 300 m / min under a tension of 0.5 g / denier (gm / denier), and the copper wire was Record the length that the yarn passed when it ruptured due to yarn friction. The longer the yarn has passed, the less abradable the measured yarn.
[0015]
【Example】
Example 1
0.5% by weight of an average particle diameter of 100 nm or less and 0.5% by weight of an average particle diameter of 0.3 μm or more and 0.4% by weight of polyester chips containing inorganic titanium dioxide fine particles having an ultraviolet reflecting effect are added. A POY (Partially Oriented Yarn) is manufactured at a temperature of 290 ° C. and a spinning speed of 3000 m / min, and the POY is false-twisted to produce a DTY (Draw Texturized Yarn) having an ultraviolet shielding effect at a speed of 600 m / min.
[0016]
Example 2
The spinning and false twisting conditions are the same as in Example 1 to produce DTY having an ultraviolet shielding effect. However, the polyester chip used has an ultraviolet reflecting effect with an average particle diameter of 100 nanometers (nm) or less. Inorganic titanium dioxide fine particles are added, and the amount added is increased to 0.9% by weight.
[0017]
Comparative Example 1
The spinning and false-twisting conditions are the same as in Example 1 to produce a DTY having an ultraviolet shielding effect. In the polyester chip used, an inorganic titanium dioxide having an average particle diameter of 0.3 μm or more and having an ultraviolet reflecting effect. Only the fine particles are added to make the addition amount 0.9% by weight.
[0018]
Comparative Example 2
The spinning and false-twisting conditions are the same as in Example 1 to produce a DTY having an ultraviolet shielding effect. In the polyester chip used, an inorganic titanium dioxide having an average particle diameter of 0.3 μm or more and having an ultraviolet reflecting effect. By adding only the fine particles, the amount added is increased to 1.6% by weight.
[0019]
"Evaluation results"
The specifications of DTY having an ultraviolet shielding effect produced in Example 1, Example 2, Comparative Example 1, and Comparative Example 2 are as follows: the fineness is 75 denier (Denier), and the number of yarns is 72. As a process, a 75-denier 72 DTY was used to make a plain weave structure with a shuttle weaving ratio of 1/1, and the warp density = 112 threads / inch, the weft thread density = 112 threads / inch, the basis weight = 92 g / m 2 , The thickness = 0.28 mm and the porosity of the woven fabric = 10.6%. Table 1 shows the results of each of the yarn abrasion (m) and the woven UPF (%).
[Table 1]
Figure 2004044040
[0020]
The specifications of the DTY having an ultraviolet shielding effect produced in Example 1, Example 2, Comparative Example 1, and Comparative Example 2 are as follows: the fineness is 150 denier, the number of yarns is 144, and the knitting and weaving is 22GPK. The basis weight is 220 g / m 2 , the thickness of the cloth is 1.0 mm, and the porosity of the woven fabric is 5.3%. Table 2 shows the results of each woven UPF (%).
[Table 2]
Figure 2004044040
[0021]
As can be seen from the results of the above experiment, as the porosity of the woven fabric is larger, the ultraviolet ray shielding effect is inferior. When the porosity is relatively large, the average particle size of 1.0% by weight or less in the fiber using the present invention is considered. A woven fabric prepared by adding inorganic titanium dioxide fine particles having an ultraviolet reflective effect having a diameter of less than 100 nanometers (nm) and using the fiber having the ultraviolet shielding effect has the same amount of the UV protection factor UPF of the woven fabric. It is clearly superior to a woven fabric made of fibers of inorganic titanium dioxide fine particles having an ultraviolet reflective effect having an average particle diameter of 0.3 μm or more. If the same UPF as that of a woven fabric produced using fibers of inorganic titanium dioxide particles having an average particle diameter of 100 nanometers (nm) or less is to be obtained, an inorganic dioxide having an average particle diameter of 0.3 μm or more and having an ultraviolet reflecting effect can be obtained. It is necessary to increase the addition amount of titanium fine particles. Quality degrades.
[0022]
The woven fabric made of the fiber having the ultraviolet shielding effect according to the present invention has an UPF of more than 40% when the porosity of the woven fabric is 25%. In addition to having ultraviolet ray shielding properties, it can prevent skin aging, sunburn, and carcinogenicity, and has good air permeability and improved comfort when worn.

Claims (4)

繊維に1重量%以下の平均粒径が100ナノメートル(nm)より小さい紫外線反射効果を有する無機二酸化チタン微粒子を添加することを特徴とする紫外線遮蔽効果を有する繊維。A fiber having an ultraviolet ray shielding effect, wherein inorganic fine particles of an inorganic titanium dioxide having an ultraviolet ray reflection effect of 1% by weight or less and having an average particle diameter of less than 100 nanometers (nm) are added to the fiber. 前記無機二酸化チタン微粒子の製造時にさらにトリポリ燐酸カリウムの分散剤を加える請求項1に記載の紫外線遮蔽効果を有する繊維。The fiber having an ultraviolet shielding effect according to claim 1, wherein a dispersant of potassium tripolyphosphate is further added during the production of the inorganic titanium dioxide fine particles. 請求項1に記載の紫外線遮蔽効果を有する繊維を使用して製造した織物。A woven fabric produced using the fiber having an ultraviolet shielding effect according to claim 1. 織物中の紫外線遮蔽効果を有する繊維の重量が織み物全体の重量の50%以上であり、該織物の開孔率が0.7%以上25%以下であるときにはUPF(紫外線防護ファクター)が40%以上である請求項3に記載の紫外線遮蔽効果を有する繊維を使用して製造した織物。When the weight of the fiber having the ultraviolet shielding effect in the woven fabric is 50% or more of the weight of the whole woven fabric and the porosity of the woven fabric is 0.7% or more and 25% or less, UPF (ultraviolet protection factor) is increased. A woven fabric produced using the fiber having an ultraviolet shielding effect according to claim 3, which is 40% or more.
JP2002206283A 2002-07-15 2002-07-15 Fiber and woven fabric having ultraviolet light-shielding effect Pending JP2004044040A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101173997B1 (en) 2008-06-05 2012-08-16 코오롱패션머티리얼 (주) Water-proof and moisture-permeable fabric
CN102864518A (en) * 2011-07-08 2013-01-09 上海温龙化纤有限公司 Anti-ultraviolet high-tenacity polyester industrial yarn and preparation method thereof
WO2015026465A1 (en) * 2013-08-21 2015-02-26 General Electric Company Coating systems and fluorescent lamps provided therewith

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101173997B1 (en) 2008-06-05 2012-08-16 코오롱패션머티리얼 (주) Water-proof and moisture-permeable fabric
CN102864518A (en) * 2011-07-08 2013-01-09 上海温龙化纤有限公司 Anti-ultraviolet high-tenacity polyester industrial yarn and preparation method thereof
WO2015026465A1 (en) * 2013-08-21 2015-02-26 General Electric Company Coating systems and fluorescent lamps provided therewith
US9404034B2 (en) 2013-08-21 2016-08-02 General Electric Company Coating systems and fluorescent lamps provided therewith

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