JP2009019306A - Shielding fiber and fabric comprising the same - Google Patents

Shielding fiber and fabric comprising the same Download PDF

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JP2009019306A
JP2009019306A JP2007183674A JP2007183674A JP2009019306A JP 2009019306 A JP2009019306 A JP 2009019306A JP 2007183674 A JP2007183674 A JP 2007183674A JP 2007183674 A JP2007183674 A JP 2007183674A JP 2009019306 A JP2009019306 A JP 2009019306A
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shielding
fiber
white pigment
function part
carbon black
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JP4955476B2 (en
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Masaharu Saito
雅春 斉藤
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KB Seiren Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To obtain a shielding fiber and a fabric that prevent see-through of underwear and the skin. <P>SOLUTION: The shielding fiber contains the shielding function part at least in a part. The shielding function part is composed of a resin composition that contains ≥2.0 wt.% and ≤15.0 wt.% of a white pigment and carbon black and satisfies a relation between a carbon black content CB and a white pigment content WP represented by formula (i) and has the area ratio of the shielding function part of ≥25% in the fiber cross section. The white pigment is titania. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、透け防止性に優れた淡色系布帛に好適な遮蔽繊維に関するものである。   The present invention relates to a shielding fiber suitable for a light-colored fabric excellent in see-through prevention.

白色や淡色からなる淡色系布帛は、スポーツ、ユニフォーム、ブラウス、水着、下着とインナー用途、アウター用途に非常に多く用いられている。   Light-colored fabrics composed of white and light colors are very often used for sports, uniforms, blouses, swimwear, underwear and inner use, and outer use.

白色や薄いピンクやベージュ、ブルー、イエロー、グリーンと言った淡色からなる淡色系布帛は、スポーツ、ユニフォーム、ブラウス、水着、下着とインナー用途、アウター用途に非常に多く用いられている。   Light-colored fabrics made of light colors such as white, light pink, beige, blue, yellow, and green are very often used for sports, uniforms, blouses, swimwear, underwear and inner use, and outer use.

しかしながら、淡色系布帛は、透けやすく、アウターに用いる場合は下に着ているインナーのラインなどが透けて見えたり、インナーに用いた場合には肌の様子が透けて見えるという欠点を有していた。更に、水に濡れると透けやすさが倍増するという問題点をも有しており、市場からは透け防止用布帛に用いることの出来る遮蔽繊維が要望されていた。   However, the light-colored fabric is easy to see through, and when used as an outer, it has a drawback that the inner line underneath can be seen through, or when used as an inner, the skin can be seen through. It was. Furthermore, there is a problem that the transparency is doubled when wetted with water, and the market has demanded a shielding fiber that can be used as a fabric for preventing see-through.

従来より、かかる欠点を改善するために、チタニアや亜鉛華、硫酸バリウム、シリカ、アルミナ、ジルコニア、カルシア、マグネシアといった白色顔料を繊維中に含有させたり、繊維表面に付着させることが、提案されている。   Conventionally, in order to improve such defects, it has been proposed that white pigments such as titania, zinc white, barium sulfate, silica, alumina, zirconia, calcia, and magnesia are contained in the fiber or adhered to the fiber surface. Yes.

しかし、十分な透け防止性を布帛に与えるためには、繊維中の白色顔料量を極端に増す必要が生じる為に、繊維の柔軟性が失われたり、繊維表面にザラツキが生じ手触り感や肌触り感が低下したり、更には、繊維を布帛に加工する際の工程通過性が低下したり、といった多くの問題が生じていた。   However, in order to give the fabric sufficient anti-transparency, the amount of white pigment in the fiber needs to be extremely increased, so that the flexibility of the fiber is lost or the surface of the fiber becomes rough and feels and feels to the touch. Many problems have arisen, such as a decrease in feeling and a decrease in process passability when fibers are processed into a fabric.

これらの改善の為に高濃度の白色顔料を含有した樹脂を繊維の芯部だけに用い、その回りを白色顔料を含有しないか、含有していても低濃度に抑えた芯鞘型複合繊維が提案されたり、芯部の形状を工夫し星型などの配置を行うといった提案がなされてきた(例えば、特許文献1〜3)。   For these improvements, a core-sheath type composite fiber that uses a resin containing a high concentration of white pigment only in the core of the fiber and does not contain a white pigment around it or has a low concentration even if it is contained. Proposals have been made, and proposals have been made such as arranging the star shape by devising the shape of the core (for example, Patent Documents 1 to 3).

特開平5−247723号公報JP-A-5-247723 特開平8−60485号公報JP-A-8-60485 特開2005−325481号公報JP-A-2005-325481

しかしながら、これらはいずれの場合においても、透け防止性能は、十分なものが得られていないのが現状である。
そこで、本発明は、かかる従来の問題を解決し、透け防止性に優れた淡色系布帛に用いることの出来る遮蔽繊維を提供することを課題としたものである。
However, in any of these cases, however, at present, a sufficient anti-slipping performance has not been obtained.
Then, this invention makes it a subject to solve the conventional problem and to provide the shielding fiber which can be used for the light-colored fabric excellent in see-through prevention property.

上記課題を解決するために、本発明者は、透過光の白色顔料による反射散乱現象のみを利用して透け防止をするのではなく、白色顔料に、透過光や白色顔料からの反射散乱光を吸収するカーボンブラックを微量な特定の範囲で加えることに着目して、本発明に到達した。
本発明は、次の構成を採用する。即ち、少なくとも一部に遮蔽機能部を含む遮蔽繊維であって、遮蔽機能部は、白色顔料を2.0wt%以上、15.0wt%以下含有するとともにカーボンブラックを含有し、カーボンブラック含有量CBと白色顔料含有量WPの関係が下記の式(i)を満足した樹脂組成物からなり、繊維横断面において、遮蔽機能部の面積比率が25%以上であることを特徴とする遮蔽繊維であり、前記白色顔料は、チタニアであることが好ましい。

Figure 2009019306
また、本発明は、上記遮蔽繊維からなる布帛でもある。 In order to solve the above-mentioned problem, the present inventor does not prevent the transmitted light from being reflected only by using the reflection / scattering phenomenon caused by the white pigment, but transmits the transmitted light or the reflected / scattered light from the white pigment to the white pigment. The present invention has been achieved by paying attention to adding a small amount of carbon black to be absorbed in a specific range.
The present invention employs the following configuration. That is, it is a shielding fiber including a shielding function part at least partially, and the shielding function part contains 2.0 wt% or more and 15.0 wt% or less of a white pigment, contains carbon black, and contains carbon black CB. And a white pigment content WP is a shielding fiber characterized in that it is made of a resin composition satisfying the following formula (i), and the area ratio of the shielding function part is 25% or more in the fiber cross section The white pigment is preferably titania.
Figure 2009019306
Moreover, this invention is also the fabric which consists of the said shielding fiber.

本発明は、上記構成を採用する事により、十分な透け防止性を有する淡色系布帛に用いることが可能な遮蔽繊維を得る事が出来る。
即ち、本発明の遮蔽繊維は、白色顔料とカーボンブラックを上記の範囲とした遮蔽機能部が、繊維横断面積の25%以上占めることにより、淡色系布帛とした際に、淡色を保ったまま、従来の布帛と比べて、通常時でも、水に濡れた状態でも、優れた透け防止性を得ることができる。また白色顔料がチタニアであると、さらに高い透け防止効果を有する。
By adopting the above-described configuration, the present invention can provide a shielding fiber that can be used for a light-colored fabric having sufficient see-through prevention.
That is, in the shielding fiber of the present invention, when the shielding functional part having the white pigment and the carbon black in the above range occupies 25% or more of the cross-sectional area of the fiber, when the light-colored fabric is used, the light color is maintained. Compared to conventional fabrics, it is possible to obtain excellent see-through preventing properties even at normal times or in a wet state with water. Further, when the white pigment is titania, it has a higher anti-slipping effect.

本発明は、少なくとも一部に遮蔽機能部を含む遮蔽繊維および布帛である。本発明の遮蔽繊維は、遮蔽機能部と、遮蔽機能部以外の部分(非遮蔽機能部)とから構成されてもよいし、遮蔽機能部のみで構成されていてもよい。   The present invention is a shielding fiber and fabric that includes at least a shielding function part. The shielding fiber of this invention may be comprised from the shielding function part and parts (non-shielding function part) other than a shielding function part, and may be comprised only by the shielding function part.

まず、本発明の遮蔽繊維を構成する原料となる樹脂としては、重合時ないしは熱溶融時に白色顔料およびカーボンブラックを所定量複合化できるのであれば特に限定されない。例えば、ポリエステル系樹脂、ポリアミド系樹脂、アクリル系樹脂およびポリオレフィン系樹脂などが挙げられる。具体的には、ポリエステル系樹脂としては、ポリエチレンテレフタレート(PET)、ポリテトラメチレンテレフタレート(PTT)、ポリブチレンテレフタレート(PBT)、ポリ乳酸(PLA)と言ったポリエステルやこれらの酸成分ないしはグリコール成分などの一部または全部を他の酸成分(例えば、イソフタル酸、セバシン酸、コハク酸、アジピン酸)やグリコール成分(例えば、シクロへキサンジメタノール、ブタンジオール、ポリエチレングリコール)で置き換えた共重合ポリエステルなどが挙げられる。ポリアミド系樹脂としては、ポリアミド6、ポリアミド12、ポリアミド66、ポリアミドMXD6と言ったポリアミドおよびこれらポリアミドの混合物などが挙げられる。アクリル樹脂としては、ポリアクリロニトリルや共重合ポリアクリロニトリルなどのアクリルが挙げられる。ポリオレフィン系樹脂としては、ポリエチレンやポリプロピレンなどのポリオレフィンが挙げられる。   First, the resin that is a raw material constituting the shielding fiber of the present invention is not particularly limited as long as a predetermined amount of a white pigment and carbon black can be combined during polymerization or heat melting. Examples thereof include polyester resins, polyamide resins, acrylic resins, and polyolefin resins. Specifically, examples of polyester resins include polyesters such as polyethylene terephthalate (PET), polytetramethylene terephthalate (PTT), polybutylene terephthalate (PBT), and polylactic acid (PLA), and their acid components or glycol components. Copolymer polyester in which a part or all of is replaced with other acid components (for example, isophthalic acid, sebacic acid, succinic acid, adipic acid) or glycol components (for example, cyclohexanedimethanol, butanediol, polyethylene glycol) Is mentioned. Examples of the polyamide-based resin include polyamides such as polyamide 6, polyamide 12, polyamide 66, and polyamide MXD6, and mixtures of these polyamides. Examples of the acrylic resin include acrylic such as polyacrylonitrile and copolymerized polyacrylonitrile. Examples of the polyolefin resin include polyolefins such as polyethylene and polypropylene.

次に、本発明の遮蔽機能部は、白色顔料およびカーボンブラックを含む樹脂組成物から構成される。   Next, the shielding function part of this invention is comprised from the resin composition containing a white pigment and carbon black.

本発明の白色顔料としては、チタニアや亜鉛華、硫酸バリウム、シリカ、アルミナ、ジルコニア、カルシア、マグネシアなどを挙げる事が出来る。この中でもチタニアは白度が高く好適である。更には、チタニアの中でも結晶系がアナターゼのものとルチルのものがあり、この中でアナターゼの方が、硬度が低く、相手磨耗性の観点から好適に用いる事が出来る。   Examples of the white pigment of the present invention include titania, zinc white, barium sulfate, silica, alumina, zirconia, calcia, and magnesia. Among these, titania is preferable because of its high whiteness. Further, among titania, there are anatase and rutile crystal systems, and among these, anatase has a lower hardness and can be suitably used from the viewpoint of mating wear.

本発明の白色顔料の粒子径としては、紡糸性の点から平均粒子径1μm以下のものを用いることが好ましい。更に好ましくは、平均粒子径0.3〜0.7μmである。即ち、繊維加工工程中の糸道に対する摩擦磨耗性を低減する点からは、平均粒径が1μm以上の白色顔料を用いることが好ましい。また、平均粒子径が小さすぎると樹脂への複合化の際、凝集が生じやすくなるために均一分散が非常に難しくなる点を考慮すると、白色顔料の平均粒子径は0.3μm以上が好ましい。尚、均一分散がなされないと紡糸ノズルやノズル前フィルターの閉塞を生じさせたり、凝集物により繊維加工工程中の糸道に対する摩擦磨耗性が大きくなり好ましくない。   As the particle diameter of the white pigment of the present invention, those having an average particle diameter of 1 μm or less are preferably used from the viewpoint of spinnability. More preferably, the average particle size is 0.3 to 0.7 μm. That is, it is preferable to use a white pigment having an average particle diameter of 1 μm or more from the viewpoint of reducing frictional wear on the yarn path during the fiber processing step. In addition, if the average particle size is too small, aggregation tends to occur at the time of compounding to the resin, so that uniform dispersion becomes very difficult, so that the average particle size of the white pigment is preferably 0.3 μm or more. If the uniform dispersion is not achieved, the spinning nozzle and the filter in front of the nozzle are clogged, and the agglomerate increases frictional wear on the yarn path during the fiber processing step, which is not preferable.

白色顔料の含有量については、2.0wt%以上、15.0wt%以下であり、4.0wt%以上、9.0wt%以下が望ましい。
白色顔料の含有量が2.0wt%未満の場合には、実質的に遮蔽効果を十分に発揮する事が出来ない。また、白色顔料含有量が15.0wt%を超える場合には、白色顔料が凝集しやすくなり遮蔽繊維用樹脂への均一な分散が難しかったり、繊維化する際や織編みの際の糸道に対する摩擦磨耗が大きく、工業的な生産性が著しく低下する。
The content of the white pigment is 2.0 wt% or more and 15.0 wt% or less, and preferably 4.0 wt% or more and 9.0 wt% or less.
When the content of the white pigment is less than 2.0 wt%, the shielding effect cannot be substantially exhibited. Further, when the white pigment content exceeds 15.0 wt%, the white pigment is likely to aggregate and difficult to uniformly disperse in the shielding fiber resin, or to the yarn path during fiberization or knitting. Friction wear is large and industrial productivity is significantly reduced.

本発明に用いる事の出来るカーボンブラックについては、特に限定するものではないが、例えば、顔料用カーボンブラック、ゴム用カーボンブラック、ケッチェンブラックやアセチレンブラック等の導電性カーボンブラックなどが挙げられる。ベースとなる樹脂に均一に微分散させやすい点から、顔料用カーボンブラックが好ましく、顔料用カーボンブラックはファーネス法により得られたものであることがより好ましい。具体的な例としては、Cabot社製カーボンブラックMONARCH800やMONARCH900、三菱化学株式会社製カーボンブラック#950や#40、Degussa−Huls社製カーボンブラックPrintex80、東海カーボン株式会社製トーカブラック#8300Fや#7100Fなどが挙げられる。   The carbon black that can be used in the present invention is not particularly limited, and examples thereof include carbon black for pigment, carbon black for rubber, and conductive carbon black such as ketjen black and acetylene black. Carbon black for pigments is preferable from the viewpoint of being easily and uniformly dispersed in the base resin, and carbon black for pigments is more preferably obtained by a furnace method. Specific examples include carbon blacks MONARCH800 and MONARCH900 manufactured by Cabot, carbon blacks # 950 and # 40 manufactured by Mitsubishi Chemical Corporation, carbon black Printex80 manufactured by Degussa-Huls, and talker black # 8300F and # 7100F manufactured by Tokai Carbon Co., Ltd. Etc.

また本発明の遮蔽機能部を構成する樹脂組成物のカーボンブラック含有量CBと白色顔料含有量WPの関係は下記の式(i)を満足する。   The relationship between the carbon black content CB and the white pigment content WP of the resin composition constituting the shielding function part of the present invention satisfies the following formula (i).

Figure 2009019306
Figure 2009019306

上記カーボンブラックは、遮蔽機能部で白色顔料により反射散乱しながら進む光を吸収して遮蔽する役割を果たす。
上記カーボンブラックの含有量は、上記白色顔料との比率が重要であり、相対的に少ない場合には散乱光を吸収する効果が小さくなる。逆に相対的に多い場合には、布帛全体がグレーっぽくくすんでしまい、遮蔽性は高くなるものの本来の淡色系布帛として用いる事が出来なくなる。
The carbon black plays a role of absorbing and shielding light that travels while being reflected and scattered by the white pigment in the shielding function part.
The ratio of the carbon black content to the white pigment is important, and when the content is relatively small, the effect of absorbing scattered light becomes small. On the other hand, when the amount is relatively large, the entire fabric becomes dull and gray, and the shielding property is increased, but it cannot be used as an original light-colored fabric.

尚、遮蔽機能部の樹脂組成物には、本発明の目的を損なわない範囲で、耐熱剤(例えば、ヒンダードフェノール系、ヒンダードアミン系、ベンゾトリアゾール系、ヒドロキノン系、チオエーテル系、フォスファイト系、およびこれらの置換体およびそれらの組み合わせを含む)、紫外線吸収剤(例えば、ベンゾトリアゾール、ベンゾフェノン、レゾルシノール、サリシレートなど)、染料(例えば、ニトロシンなど)、顔料(例えば、フタロシアニンなど)、蛍光増白剤などを1種類以上添加することができる。   In the resin composition of the shielding function part, a heat resistant agent (for example, a hindered phenol type, a hindered amine type, a benzotriazole type, a hydroquinone type, a thioether type, a phosphite type, and the like, as long as the object of the present invention is not impaired. Including these substituents and combinations thereof), ultraviolet absorbers (eg, benzotriazole, benzophenone, resorcinol, salicylate, etc.), dyes (eg, nitrocin), pigments (eg, phthalocyanine), fluorescent brighteners, etc. 1 or more types can be added.

これら白色顔料やカーボンブラックおよび必要に応じて添加する各種添加剤は、重合時のモノマーに分散させておいて、それを重合することで複合化して紡糸に供しても良い。また一旦、重合の終了した樹脂に対しては、ポリエステル系、ポリアミド系、ポリオレフィン系と言った熱可塑性樹脂については、熱溶融させて二軸押出機などで複合化させた後、紡糸に供しても良い。また、アクリル系のように熱溶融しない樹脂に対しては、溶媒へ溶解させるときに合わせて分散させて湿式紡糸に供しても良い。   These white pigment, carbon black, and various additives that are added as necessary may be dispersed in a monomer at the time of polymerization and then combined to polymerize and used for spinning. Also, once the resin has been polymerized, thermoplastic resins such as polyester, polyamide, and polyolefin are melted and compounded with a twin screw extruder, etc., and then used for spinning. Also good. In addition, an acrylic resin that does not melt by heat may be subjected to wet spinning after being dissolved in a solvent and dispersed.

本発明の非遮蔽機能部を構成する樹脂としては、上述の遮蔽繊維に用いる事が出来る樹脂であればいずれを用いてもよい。中でも、遮蔽機能部に用いる樹脂と非遮蔽機能部に用いる樹脂は、同系統のものであることが、取り扱い上、好ましい。例えば遮蔽機能部がポリエステル系であれば非遮蔽機能部もポリエステル系を用いる。   As the resin constituting the non-shielding functional part of the present invention, any resin that can be used for the above-described shielding fiber may be used. Especially, it is preferable on handling that the resin used for the shielding function part and the resin used for the non-shielding function part are of the same system. For example, if the shielding function part is polyester, the non-shielding function part is also polyester.

非遮蔽機能部に用いる樹脂に対しても、本発明の目的を損なわない範囲で、耐熱剤(例えば、ヒンダードフェノール系、ヒンダードアミン系、ベンゾトリアゾール系、ヒドロキノン系、チオエーテル系、フォスファイト系、およびこれらの置換体およびそれらの組み合わせを含む)、紫外線吸収剤(例えば、ベンゾトリアゾール、ベンゾフェノン、レゾルシノール、サリシレートなど)、染料(例えば、ニトロシンなど)、顔料(例えば、フタロシアニン、チタニアなど)、蛍光増白剤などを1種類以上添加することができる。   For the resin used for the non-shielding functional part, as long as the object of the present invention is not impaired, a heat-resistant agent (for example, hindered phenol, hindered amine, benzotriazole, hydroquinone, thioether, phosphite, and Including these substitutions and combinations thereof), UV absorbers (eg, benzotriazole, benzophenone, resorcinol, salicylate, etc.), dyes (eg, nitrocin), pigments (eg, phthalocyanine, titania), fluorescent whitening One or more kinds of agents can be added.

次に、繊維セクション(繊維横断面の構成)に関しては、特に限定するものではないが、遮蔽機能部のみ繊維形成しても差し支えないし、遮蔽機能部からなる芯部1を、非遮蔽機能部からなる鞘部2で完全に覆った芯鞘型繊維(図2(a)に例示)や、非遮蔽機能部からなる鞘部2が、非遮蔽機能からなる芯部1により分断され、芯部1が一部露出したサンドイッチ型繊維(図2(b)に例示)としてもよい。尚、芯部と鞘部からなる芯鞘型繊維とする場合、芯部に遮蔽機能部を配することが好適である。
但し、遮蔽機能部の繊維横断面積に対する比率は、繊維横断面全体に対し、25%以上であることが肝要である。好ましくは、33%以上であり、更に好ましくは50%以上であり、最も好ましくは、75%以上である。
遮蔽機能部の繊維横断面積に対する比率が25%未満の場合には、非遮蔽機能部を透過する光の影響が大きく遮蔽効果が激減する。
Next, although it does not specifically limit regarding a fiber section (configuration of a fiber cross section), it does not interfere even if only a shielding function part forms a fiber, and the core part 1 which consists of a shielding function part is made from a non-shielding function part. The core-sheath type fiber completely covered with the sheath part 2 (illustrated in FIG. 2A) and the sheath part 2 made of the non-shielding function part are divided by the core part 1 made of the non-shielding function, and the core part 1 May be a partially exposed sandwich type fiber (illustrated in FIG. 2B). In addition, when setting it as the core sheath type fiber which consists of a core part and a sheath part, it is suitable to arrange | position a shielding function part to a core part.
However, it is important that the ratio of the shielding function part to the fiber cross-sectional area is 25% or more with respect to the entire fiber cross section. Preferably, it is 33% or more, more preferably 50% or more, and most preferably 75% or more.
When the ratio of the shielding function part to the fiber cross-sectional area is less than 25%, the influence of light transmitted through the non-shielding function part is large, and the shielding effect is drastically reduced.

次に、本発明の遮蔽繊維および布帛の製造方法の例を示す。
例えば、白色顔料とカーボンブラックを予備ブレンドした後、上述した遮蔽機能部の原料となる樹脂に二軸押出混練機を用い複合化し、遮蔽機能部の樹脂組成物を得る。次いで、得られた樹脂組成物を所定形状に紡糸して、もしくは得られた樹脂組成物と上述した非遮蔽機能部の原料となる樹脂とを所定の形状に複合紡糸して、遮蔽繊維を得ることができる。
Next, the example of the manufacturing method of the shielding fiber and fabric of this invention is shown.
For example, after pre-blending a white pigment and carbon black, the resin used as the raw material for the shielding function part is combined with a biaxial extrusion kneader to obtain a resin composition for the shielding function part. Next, the obtained resin composition is spun into a predetermined shape, or the obtained resin composition and the resin used as a raw material for the above-described non-shielding functional part are combined and spun into a predetermined shape to obtain shielding fibers. be able to.

紡糸方法は、コンベンショナルな未延伸糸を得た後、延伸機にて延伸して得ても良いし、直接紡糸延伸法で得ても良い。更に部分未延伸糸(POY)を得た後、仮撚加工を行っても何ら問題は無い。   The spinning method may be obtained by obtaining a conventional undrawn yarn and then drawing it with a drawing machine, or by a direct spinning drawing method. Furthermore, there is no problem even if false twisting is performed after partially undrawn yarn (POY) is obtained.

得られた遮蔽繊維は、織物または編物として布帛となし、生成りにおいてもまた、淡色系の染色を行っても遮蔽性に優れた布帛として供する事ができる。   The obtained shielding fiber can be used as a fabric as a woven fabric or a knitted fabric, and can be used as a fabric excellent in shielding properties even when it is produced or dyed in a light color.

以下、実施例を挙げて本発明を説明するが、本発明はこの実施例に限定されない。
各種試料の調整および試料評価に関しては、次の方法で実施した。
EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated, this invention is not limited to this Example.
Various sample preparations and sample evaluations were carried out by the following methods.

A.樹脂複合化方法
事前に所定比率の白色顔料とカーボンブラックを予備ブレンドしたものと遮蔽機能部のベースとなる樹脂を、その樹脂融点+30℃にて二軸押出混練機(株式会社日本製鋼所製TEX30α)にて複合化を実施して遮蔽機能部に用いる樹脂組成物(遮蔽機能樹脂組成物)を得た。
A. Resin compounding method A pre-blended white pigment and carbon black in a predetermined ratio and a resin serving as a base of the shielding function part are mixed at a resin melting point + 30 ° C. with a twin-screw extrusion kneader (TEX30α manufactured by Nippon Steel Co., Ltd.). ) To obtain a resin composition (shielding function resin composition) used for the shielding function part.

B.紡糸方法
芯および鞘の比率を所定通りに各々変えて猫目状サンドイッチ構造(図2(c))の未延伸糸を得、常法にて3.2倍の延伸を行い56dtex/24fの繊維を得た。
B. Spinning method The ratio of the core and the sheath was changed as prescribed to obtain an undrawn yarn having a cat-like sandwich structure (FIG. 2 (c)), and a fiber of 56 dtex / 24f was drawn by 3.2 times by a conventional method. Got.

C.評価準備
ニュアンス巻き機を用い、表面が白、裏面が黒の7cm角の巻板に直交方向に4回巻付けを実施した。
C. Preparation for evaluation Using a nuance winder, winding was performed four times in a perpendicular direction on a 7 cm square wound plate having a white surface and a black back surface.

D.評価方法
日本電色工業株式会社製カラーメーターZE2000を用い、ニュアンス巻プレートを反射光測定でL値(白さの尺度で、L値=100が最も白く、L値が小さくなるとグレーから黒となる)を測定した。白面側でのL値をLw、黒面側でのL値をLbとした。LwとLbの差をΔLとし遮蔽性の指標(ΔLが小さいと遮蔽性が高く、ΔLが大きいと遮蔽性が低い。)とした。
D. Evaluation Method Using a color meter ZE2000 manufactured by Nippon Denshoku Industries Co., Ltd., the nuance winding plate is measured by reflected light to obtain an L value (whiteness scale, L value = 100 is the whitest, and when the L value is small, the color changes from gray to black. ) Was measured. The L value on the white side was Lw, and the L value on the black side was Lb. The difference between Lw and Lb was ΔL, which was an indicator of shielding property (when ΔL is small, shielding property is high, and when ΔL is large, shielding property is low).

白度評価:淡色系布帛に用いる事より白度の評価基準として、Lw値が、90以上のものを◎(非常に良い)、88以上のものを○(良好)、それ未満のものを×(不良)とした。
遮蔽性評価:遮蔽性の判断基準として、ΔLが1以下のものを◎(非常に良い)、1を超え3以下のものを○(良好)、3を超えるものを×(不良)とした。
総合評価:白度評価と遮蔽性評価がいずれも◎のものを◎(非常に良い)、白度評価と遮蔽性評価のいずれかが◎または○でかつ残りが○のものを○(良好)、白度評価および遮蔽性評価で一つでも×のあるものを×(不良)とした。
Evaluation of whiteness: As an evaluation standard of whiteness due to use in light-colored fabrics, Lw value of 90 or more is ◎ (very good), 88 or more is ○ (good), and less than that is × (Defect).
Shielding evaluation: As a judgment criterion of shielding, L (very good) when ΔL is 1 or less, ◯ (good) when 1 or more and 3 or less, and × (bad) when 3 or more.
Comprehensive evaluation: When the whiteness evaluation and the shielding evaluation are both ◎ (very good), when either the whiteness evaluation and the shielding evaluation are ◎ or ○ and the rest are ○ (good) In the whiteness evaluation and the shielding evaluation, even one with x was evaluated as x (defect).

[実施例1]
KBセーレン株式会社製のブライトポリエステル樹脂に対し、富士チタン工業株式会社製チタニアTA301を5wt%とCabot社製カーボンブラックMONARCH800を10ppmとなるように、上記A.樹脂複合化方法にて複合化を実施し、遮蔽機能樹脂組成物<1>を得た。得られた遮蔽性機能樹脂組成物を芯とし、鞘にはKBセーレン製セミダルポリエステル樹脂を用い、芯/鞘=2/1の比率にて紡糸し猫目状サンドイッチ構造の繊維を得た。得られた繊維に関し、白度評価および遮蔽性評価を行いその結果を表1に示した。
[Example 1]
The bright polyester resin manufactured by KB Seiren Co., Ltd. was adjusted to 5 wt% of titania TA301 manufactured by Fuji Titanium Industry Co., Ltd. and 10 ppm of carbon black MONARCH 800 manufactured by Cabot Co., Ltd. Compounding was performed by a resin compounding method to obtain a shielding functional resin composition <1>. The resulting shielding functional resin composition was used as a core, and a semi-polyester resin made of KB Seiren was used as the sheath, and spinning was performed at a ratio of core / sheath = 2/1 to obtain a fiber having a cat-like sandwich structure. The obtained fibers were subjected to whiteness evaluation and shielding evaluation, and the results are shown in Table 1.

[実施例2〜10]
実施例1と同様に表1に示したチタニアとカーボンブラックの比率にて複合化を行い、遮蔽機能樹脂組成物<2>〜<10>を得、同様に紡糸して繊維化を実施した。得られた繊維に関して、実施例1と同様に白度評価および遮蔽性評価を行いその結果を表1に合わせて示した。
[Examples 2 to 10]
In the same manner as in Example 1, compounding was performed at a ratio of titania and carbon black shown in Table 1 to obtain shielding functional resin compositions <2> to <10>, which were similarly spun and fiberized. The obtained fibers were evaluated for whiteness and shielding properties in the same manner as in Example 1, and the results are shown in Table 1.

[比較例1]
実施例1に対し、カーボンブラックを含有していない組成にて樹脂複合化を行い、更に紡糸して繊維化を実施した。得られた繊維に関して、実施例1と同様に白度評価および遮蔽性評価を行いその結果を表1に合わせて示した。
[Comparative Example 1]
For Example 1, a resin composite was prepared with a composition not containing carbon black, and further spun to fiberize. The obtained fibers were evaluated for whiteness and shielding properties in the same manner as in Example 1, and the results are shown in Table 1.

[比較例2〜9]
チタニアの複合比率およびカーボンブラックの含有量を各々変えて実施例1と同様に樹脂複合化および紡糸を行い繊維を得た。得られた繊維に関して、同様に白度評価および遮蔽性評価を行いその結果を表1に合わせて示した。
[Comparative Examples 2 to 9]
Resin composite and spinning were carried out in the same manner as in Example 1 by changing the titania composite ratio and the carbon black content to obtain fibers. The obtained fibers were similarly evaluated for whiteness and shielding properties, and the results are shown in Table 1.

Figure 2009019306
Figure 2009019306

表1の結果を横軸にチタニア含有量(wt%)、縦軸をカーボンブラック含有量(ppm)として、実施例を○で、比較例を×でプロットし、図1とした。プロットに加えその境界となる上限下限を直線で書き加えた。   The results in Table 1 are plotted with the titania content (wt%) on the horizontal axis and the carbon black content (ppm) on the vertical axis, and the example is plotted with ◯ and the comparative example with x, and is shown in FIG. In addition to the plot, the upper and lower bounds that serve as the boundary were written in a straight line.

[実施例11]
実施例1で用いたニュアンス巻試料に霧吹きで水を吹きかけて試料を湿らせた後、白度評価および遮蔽性評価を実施し、その結果を表2に示した。
[Example 11]
After spraying water on the nuanced sample used in Example 1 by spraying water to wet the sample, whiteness evaluation and shielding evaluation were performed, and the results are shown in Table 2.

[比較例10]
比較例1で用いたニュアンス巻試料に霧吹きで水を吹きかけて試料を湿らせた後、白度評価および遮蔽性評価を実施し、その結果を表2にあわせて示した。
本発明の遮蔽性繊維においては、水にぬらした後でも遮蔽性の低下が僅かであるのに対し、比較例では大きく遮蔽性が低下した。
[Comparative Example 10]
After spraying water on the nuance winding sample used in Comparative Example 1 with a spray to wet the sample, whiteness evaluation and shielding evaluation were performed. The results are shown in Table 2.
In the shielding fiber of the present invention, the decrease in the shielding property was slight even after being wetted with water, whereas the shielding property was greatly lowered in the comparative example.

Figure 2009019306
Figure 2009019306

[実施例12、13、14]
実施例1で用いた遮蔽性樹脂組成物を用い芯鞘比率を夫々1/3、1/1および1/0として紡糸し、実施例1と同様に評価を実施し、その結果を表3に纏めて示した。
[Examples 12, 13, and 14]
Using the shielding resin composition used in Example 1, the core-sheath ratios were spun at 1/3, 1/1, and 1/0, respectively, and evaluated in the same manner as in Example 1. The results are shown in Table 3. Shown collectively.

[比較例11]
実施例1で用いた遮蔽性樹脂組成物を用い芯鞘比率を1/4とした以外は同様に紡糸および評価を実施し、その結果を表3に纏めて示した。
遮蔽機能部の繊維横断面積に占める割合が25%未満になると遮蔽機能が低減した。
[Comparative Example 11]
Spinning and evaluation were carried out in the same manner except that the shielding resin composition used in Example 1 was used and the core-sheath ratio was set to 1/4. The results are summarized in Table 3.
When the ratio of the shielding function portion to the cross-fiber area was less than 25%, the shielding function was reduced.

Figure 2009019306
Figure 2009019306

(布帛の製造と評価)
上記実施例1、13、14で製造した繊維を用いて夫々筒編布を製造した。これを腕に通して肌の様子が透けて見えるかどうか確認した。乾いた状態でも濡れた状態でも筒編に覆われた部分の肌の様子は全く分からなかった。
(Manufacture and evaluation of fabric)
A tubular knit fabric was produced using the fibers produced in Examples 1, 13, and 14 above. This was passed through the arm and it was confirmed whether the state of the skin could be seen through. I did not know what the skin looked like in the tube, whether it was dry or wet.

本発明の遮蔽性繊維は、白色もしくは淡色の非常に優れた透け防止性布帛に供する事が出来る。   The shielding fiber of the present invention can be used for a white or light-colored excellent anti-through cloth.

図1は、各試料のチタニア(x軸)、カーボンブラック(y軸)の含有量をプロットしたグラフである。FIG. 1 is a graph plotting the contents of titania (x axis) and carbon black (y axis) of each sample. 図2は、本発明の遮蔽繊維の繊維横断面形状の例を示す。FIG. 2 shows an example of the fiber cross-sectional shape of the shielding fiber of the present invention.

符号の説明Explanation of symbols

1 芯部
2 鞘部
1 core 2 sheath

Claims (3)

少なくとも一部に遮蔽機能部を含む遮蔽繊維であって、遮蔽機能部は、白色顔料を2.0wt%以上、15.0wt%以下含有するとともにカーボンブラックを含有し、カーボンブラックの含有量CBと白色顔料の含有量WPとの関係が下記の式(i)を満足した樹脂組成物からなり、繊維横断面において、遮蔽機能部の面積比率が25%以上であることを特徴とする遮蔽繊維。
Figure 2009019306
A shielding fiber including a shielding function part at least in part, the shielding function part containing 2.0 wt% or more and 15.0 wt% or less of a white pigment and carbon black, and a carbon black content CB A shielding fiber comprising a resin composition having a relationship with the white pigment content WP that satisfies the following formula (i), wherein the area ratio of the shielding function part is 25% or more in the fiber cross-section.
Figure 2009019306
白色顔料が、チタニアであることを特徴とする請求項1記載の遮蔽繊維。 2. The shielding fiber according to claim 1, wherein the white pigment is titania. 請求項1または2に記載の遮蔽繊維からなる布帛。 A fabric comprising the shielding fiber according to claim 1.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010138514A (en) * 2008-12-10 2010-06-24 Kb Seiren Ltd False twist yarn
CN106968025A (en) * 2017-05-08 2017-07-21 福建景丰科技有限公司 A kind of elastic filament of original liquid coloring grey polyamide fibre 6 and its production method

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Publication number Priority date Publication date Assignee Title
JPH03152152A (en) * 1989-11-09 1991-06-28 Unitika Ltd Resin composition
JPH04285646A (en) * 1991-03-13 1992-10-09 Idemitsu Petrochem Co Ltd Polyolefinic resin composition
JPH11107048A (en) * 1997-09-30 1999-04-20 Kuraray Co Ltd Sheath-core type polyester textile excellent in dyeability and ultraviolet screening effects and production of the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03152152A (en) * 1989-11-09 1991-06-28 Unitika Ltd Resin composition
JPH04285646A (en) * 1991-03-13 1992-10-09 Idemitsu Petrochem Co Ltd Polyolefinic resin composition
JPH11107048A (en) * 1997-09-30 1999-04-20 Kuraray Co Ltd Sheath-core type polyester textile excellent in dyeability and ultraviolet screening effects and production of the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010138514A (en) * 2008-12-10 2010-06-24 Kb Seiren Ltd False twist yarn
CN106968025A (en) * 2017-05-08 2017-07-21 福建景丰科技有限公司 A kind of elastic filament of original liquid coloring grey polyamide fibre 6 and its production method

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