JP7357464B2 - Breathable UV-A shielding knitted fabric - Google Patents
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Description
本発明は、特に肌の線維芽細胞にダメージを与え、シワやたるみなどを引き起こすとされる波長の長い紫外線Ａ波（波長が３２０～４００ｎｍの紫外線：以下、ＵＶ－Ａとも記す）の遮蔽性に優れ、かつ非常に高通気で清涼性に優れたスポーツ、インナー、アウター等の衣料用途に使用される編物素材に関する。 The present invention has the ability to shield long-wavelength ultraviolet A waves (ultraviolet rays with a wavelength of 320 to 400 nm: hereinafter also referred to as UV-A), which are said to particularly damage skin fibroblasts and cause wrinkles and sagging. The present invention relates to a knitted material used for clothing such as sportswear, innerwear, and outerwear, which has excellent air permeability, extremely high air permeability, and excellent coolness.
紫外線による日焼けや、しみ、あるいは皮膚ガン等を防止する目的で紫外線遮蔽性を高めた布帛が数多く提案されている。
例えば、特許文献１には、極細繊維を用いて作製された通気度が１ｃｃ／ｍ２／２４ｈｒ以下で透湿性が４０００ｇ／ｍ２以上で、カバーファクターが２０００以上の紫外線遮蔽用の織編物が開示されている。しかしながら、紫外線遮蔽効果を発現させるために織編物の組織を緻密なものにしなければならず、その結果、布帛自体の風合が硬く、通気性が悪くなるという欠点を有するものであった。
Many fabrics with enhanced ultraviolet shielding properties have been proposed for the purpose of preventing sunburn, stains, skin cancer, etc. caused by ultraviolet rays.
For example, Patent Document 1 describes a woven or knitted fabric for ultraviolet shielding that is made using ultrafine fibers and has an air permeability of 1 cc/m 2 /24 hr or less, a moisture permeability of 4000 g/m 2 or more, and a cover factor of 2000 or more. Disclosed. However, the structure of the woven or knitted fabric must be made dense in order to exhibit the UV-shielding effect, and as a result, the fabric itself has a hard feel and has poor air permeability.
また、特許文献２には、紫外線を反射または吸収する性能を有する成分を含み、紫外線Ａ波（３２０～４００μｍ）、紫外線Ｂ波（波長が２９０～３２０ｎｍの紫外線：以下、ＵＶ－Ｂとも記す）の透過率を規定し、高通気度を維持した繊維構造体が提案されている。この従来技術においては、日焼けや皮膚ダメージに及ぼす影響度の異なる紫外線Ａ波とＢ波に分けて、それぞれの平均透過率を一定値以下に抑えることにより紫外線遮蔽性を高めた繊維構造体が開示されている。しかし、衣料とした場合、紫外線Ａ波の透過率は低いものの、温湿度をできるだけ快適な領域に保つための通気性の確保が不十分である。 Furthermore, Patent Document 2 discloses that the components include components that have the ability to reflect or absorb ultraviolet rays, including ultraviolet A waves (320 to 400 μm) and ultraviolet B waves (ultraviolet rays with a wavelength of 290 to 320 nm: hereinafter also referred to as UV-B). A fiber structure has been proposed that has a specified transmittance and maintains high air permeability. This conventional technology discloses a fiber structure that improves ultraviolet shielding properties by separating ultraviolet A and B waves, which have different effects on sunburn and skin damage, and suppressing the average transmittance of each to below a certain value. has been done. However, when used as clothing, although the transmittance of ultraviolet A waves is low, it is insufficient to ensure breathability to keep temperature and humidity within a comfortable range.
また、特許文献３には無機酸化微粒子の含有量が１．０重量％以上６．０重量％以下の合成繊維、及び／又は無機酸化微粒子の含有量が３．０重量％以上２０．０重量％以下の芯部と、無機酸化微粒子の含有量が２．０重量％以下の鞘部を有する芯鞘型合成繊維で構成された編物であり、布帛の開孔率が０．５％以上７％以下、編物の見掛け密度が０．２５ｇ／ｃｍ３以下、かつＳＰＦ値が２０以上である紫外線遮蔽性編物が開示されている。ＳＰＦ値は、ＵＶ－Ｂ（２９０～３２０ｎｍ）によるサンバーンに代表される皮膚炎症反応による日焼けに着目したものであるが、近年は日焼け止め化粧品において、ＳＰＦ値に加え、ＵＶ－Ａ（３２０～４００ｎｍ）の遮蔽性を示すＰＡ値表示を併記するものが一般的となってきており、ＵＶ－Ａに対する遮蔽性が再認識されてきている。
しかし、布帛やそれを用いた衣服においては、ＵＶ－Ａの遮蔽性については十分な検討がなされているとは言えない状態である。
また、布帛の密度や厚みを厚くすることにより紫外線を遮蔽することも行われているが、そのような布帛を衣料とした場合、風合が硬く、重く、通気性が十分に得られず、特に夏場などの暑い時期には不快となる虞があるものであった。このように、ＵＶ－Ａの遮蔽性に加え、十分な通気性を両立した快適性能を有する素材は得られてはいない。
Furthermore, Patent Document 3 describes synthetic fibers in which the content of inorganic oxide fine particles is 1.0% by weight or more and 6.0% by weight or less, and/or the content of inorganic oxide fine particles is 3.0% by weight or more and 20.0% by weight or less. It is a knitted fabric composed of a core-sheath type synthetic fiber having a core part with a content of inorganic oxide fine particles of 2.0% or less and a sheath part with a content of inorganic oxide fine particles of 2.0% or less, and the porosity of the fabric is 0.5% or more.7 % or less, the knitted fabric has an apparent density of 0.25 g/cm 3 or less, and an SPF value of 20 or more. The SPF value focuses on sunburn due to skin inflammatory reactions such as sunburn caused by UV-B (290-320 nm), but in recent years, in sunscreen cosmetics, in addition to the SPF value, UV-A (320-400 nm) ) has become common, and the UV-A shielding properties are being reaffirmed.
However, the UV-A shielding properties of fabrics and clothing made using the same have not been sufficiently studied.
In addition, it has been attempted to block ultraviolet rays by increasing the density and thickness of fabrics, but when such fabrics are used as clothing, they are hard, heavy, and do not have sufficient breathability. This may cause discomfort, especially during hot seasons such as summer. As described above, a material that has comfortable performance that combines sufficient breathability in addition to UV-A shielding properties has not been obtained.
本発明の目的は、特にＵＶ－Ａの遮蔽性に優れ、且つ、通気性に優れたスポーツ、インナー、アウター等の衣料用途の編物素材、およびこれを用いた衣料の提供にある。 An object of the present invention is to provide a knitted material for clothing such as sports, innerwear, and outerwear, which has particularly excellent UV-A shielding properties and excellent breathability, and clothing using the same.
本発明者は、無機酸化物微粒子を特定の態様で含む合成繊維を含む、一方が天竺編からなるダブル編物を用いて、その編組織及びカバーファクターを選択的に特定することにより、紫外線、特に、肌の線維芽細胞にダメージを与え、シワやたるみなどを引き起こすとされ、日焼けやしみ等の原因とされるＵＶ－Ａの透過を抑制でき、高通気性で清涼感に富み、風合が柔らかい、紫外線によるダメージから皮膚を保護することができる衣料用の編物が得られることを見出し本発明に至った。 The present inventor used a double knitted fabric containing synthetic fibers containing inorganic oxide fine particles in a specific manner, one side of which is jersey knitted, and by selectively specifying its knitting structure and cover factor, the inventors discovered that ultraviolet rays, especially It can suppress the penetration of UV-A, which is said to damage skin fibroblasts and cause wrinkles and sagging, and is the cause of sunburn and age spots.It is highly breathable, has a refreshing feel, and has a pleasant texture. The inventors have discovered that a soft knitted fabric for clothing that can protect the skin from damage caused by ultraviolet rays can be obtained, leading to the present invention.
本発明は、
（１）に、無機酸化物微粒子の含有量が２～１２重量％の合成繊維、及び／又は無機酸化物微粒子の含有量が３～２０重量％の芯部と、無機酸化物微粒子の含有量が３重量％以下の鞘部を有する芯鞘型合成繊維からなる仮撚加工糸を７０重量％以上用いてなる、一方の面が天竺編からなるダブル編物であって、
ダブル編物のカバーファクターが８５０～１２００、ダブル編物の見掛け密度が０．１８～０．２４ｇ／ｃｍ３、ダブル編物のＵＶ－Ａ（波長が３２０～４００ｎｍの紫外線）の平均透過率が１２％以下で、且つ、ダブル編物の通気度が１５０～３００ｃｃ／ｃｍ２／ｓｅｃ、であることを特徴とするダブル編物である。
また、（２）に、無機酸化微粒子が、平均粒径が１．５μｍ以下である酸化チタンおよび／または酸化亜鉛である（１）に記載の編物である。
さらに、（３）に、（１）または（２）に記載の編物を使用した衣料である。
The present invention
(1) A synthetic fiber containing 2 to 12% by weight of inorganic oxide fine particles and/or a core containing 3 to 20% by weight of inorganic oxide fine particles, and a core containing 3 to 20% by weight of inorganic oxide fine particles. A double knitted fabric made of 70% by weight or more of a false-twisted yarn made of a core-sheath type synthetic fiber having a sheath portion of 3% by weight or less, one side of which is a jersey knit,
The cover factor of the double knitted material is 850 to 1200, the apparent density of the double knitted material is 0.18 to 0.24 g/cm 3 , and the average transmittance of UV-A (ultraviolet light with a wavelength of 320 to 400 nm) of the double knitted material is 12% or less The double knitted fabric is characterized in that the double knitted fabric has an air permeability of 150 to 300 cc/cm 2 /sec.
Further, (2) is the knitted fabric according to (1), wherein the inorganic oxide fine particles are titanium oxide and/or zinc oxide having an average particle size of 1.5 μm or less.
Furthermore, (3) is a clothing using the knitted fabric described in (1) or (2).
肌の線維芽細胞にダメージを与え、シワやたるみなどを引き起こすとされるＵＶ－Ａの遮蔽性に優れ、通気性や清涼性に優れた衣料用の編物が得られる。 It is possible to obtain a knitted fabric for clothing that is excellent in blocking UV-A, which is said to damage fibroblasts in the skin and cause wrinkles and sagging, and has excellent breathability and coolness.
以下本発明について詳細に説明する。
本発明における編物は、少なくとも一方の面が天竺編からなるダブル編物である。
天竺編は編組織が均一であり、紫外線等の遮蔽に有利である。また、天竺編の糸条繊度や編密度を適宜設定することによりカバーファクターを変化させることが容易であり、これを調整することにより、紫外線遮蔽性や通気度の調整が可能である。
しかし、特に、シングルの天竺編の場合、カバーファクターを下げることにより、通気度は上がるが、紫外線等の遮蔽性が低下するという問題がある。
このような問題の解決策として、
無機酸化物微粒子の含有量が２～１２重量％の合成繊維、及び／又は無機酸化物微粒子の含有量が３～２０重量％の芯部と、無機酸化物微粒子の含有量が２重量％以下の鞘部を有する芯鞘型合成繊維からなる仮撚加工糸を７０重量％以上用いてなる、一方の面が天竺編からなるダブル編物を用いることにより、上記の問題を解決できることを見出し、本発明に至った。
The present invention will be explained in detail below.
The knitted fabric in the present invention is a double knitted fabric in which at least one side is made of jersey knit.
The jersey knit has a uniform knitting structure and is advantageous in shielding ultraviolet rays and the like. In addition, it is easy to change the cover factor by appropriately setting the yarn fineness and knitting density of jersey knitting, and by adjusting this, it is possible to adjust the ultraviolet shielding property and air permeability.
However, particularly in the case of a single jersey knit, lowering the cover factor increases air permeability, but there is a problem in that the shielding properties against ultraviolet rays and the like decrease.
As a solution to such problems,
Synthetic fiber containing 2 to 12% by weight of inorganic oxide fine particles, and/or core containing 3 to 20% by weight of inorganic oxide fine particles, and 2% by weight or less of inorganic oxide fine particles. We have discovered that the above problem can be solved by using a double knitted fabric made of 70% by weight or more of false twisted processed yarn made of core-sheath type synthetic fibers having a sheath part, and one side of which is jersey knitted. This led to the invention.
ダブル編物の他方の面に形成される編組織は特に限定されるものではなく、天竺編、ピンメッシュ編、ハニカム編等を挙げることができる。
本発明のダブル編物におけるカバーファクターは、下記式で算出される一方の面のカバーファクターと他方の面のカバーファクターの和を２で除して算出されるものであり、カバーファクターは８５０～１２００である。カバーファクターが８５０より小さいとＵＶ－Ａの遮蔽性が十分に得られない虞があり。また、１２００より大きいと良好な通気性が得られなかったり、風合が硬くなったり、衣類としたときに重く感じる虞がある。
Ｋ＝（（Ｄｗ√Ｄｔ１＋Ｄｃ√Ｄｔ１）＋（Ｄｗ√Ｄｔ２＋Ｄｃ√Ｄｔ２））／２
Ｋ：カバーファクター
Ｄｗ：編物の経密度 ウエル数／２．５４ｃｍ
Ｄｃ：編物の緯密度 コース数／２．５４ｃｍ
Ｄｔ１：編物の片面に使用される糸の平均繊度（ｄｔｅｘ）
Ｄｔ２：編物のもう一方の片面に使用される糸の平均繊度（ｄｔｅｘ）
The knitting structure formed on the other side of the double knitted material is not particularly limited, and examples include jersey knitting, pin mesh knitting, honeycomb knitting, and the like.
The cover factor in the double knitted fabric of the present invention is calculated by dividing the sum of the cover factor of one side and the cover factor of the other side by 2, which is calculated by the following formula, and the cover factor is 850 to 1200. It is. If the cover factor is smaller than 850, there is a possibility that sufficient UV-A shielding performance cannot be obtained. On the other hand, if it is larger than 1200, good breathability may not be obtained, the texture may become stiff, and clothing may feel heavy.
K=((Dw√Dt1+Dc√Dt1)+(Dw√Dt2+Dc√Dt2))/2
K: Cover factor Dw: Warp density of knitted fabric Number of wells/2.54cm
Dc: Weft density of knitted fabric Number of courses/2.54cm
Dt1: Average fineness (dtex) of yarn used on one side of knitted fabric
Dt2: Average fineness (dtex) of the yarn used on the other side of the knitted fabric
本発明に用いられるダブル編物は、カバーファクターが８５０～１２００であって、編物の組織は一方が天竺編であれば、他方の編組織は特に限定されるものではない。また、ポリウレタン等の弾性繊維と混用してストレッチ性を付与することもできる。 The double knitted fabric used in the present invention has a cover factor of 850 to 1200, and as long as one of the knitted fabrics is jersey knitted, the other knitted fabric is not particularly limited. It can also be mixed with elastic fibers such as polyurethane to impart stretchability.
また、このような天竺編を有するダブル編物において、無機酸化物微粒子の含有量が２～１２重量％の合成繊維、及び／又は無機酸化物微粒子の含有量が３～２０重量％の芯部と、無機酸化物微粒子の含有量が３重量％以下の鞘部を有する芯鞘型合成繊維からなる仮撚加工糸を７０重量％以上用いることが必要である。
無機酸化物微粒子の含有量は、芯鞘型でない単一のポリマー組成からなる合成繊維を用いる場合、２～１２重量％である。含有量が２重量％未満では紫外線、特にＵＶ－Ａの遮蔽性が劣るものとなり、１２重量％を越えると紡糸工程の安定性、製織製編工程性が著しく低下する。
又、芯鞘型合成繊維を用いる場合は、芯部の無機酸化物微粒子の含有量が３～２０重量％であり、好ましくは５～１５重量％である。また、鞘部の含有量は３重量％以下である。
芯部の無機酸化物含有量が３重量％未満であると、紫外線、特にＵＶ－Ａの遮蔽性が劣るものとなり、２０重量％を越えると微粒子の均一な分散が困難となり、紡糸時の糸切れなどの問題が生じる虞がある。好ましい含有量は５～１５重量％である。
また、鞘部の無機酸化物微粒子の含有量が３重量％以下である芯鞘型合成繊維で構成されていることにより加工工程における糸切れなどが抑制される。
In addition, in such a double knitted fabric having jersey knitting, a synthetic fiber containing 2 to 12% by weight of inorganic oxide fine particles and/or a core containing 3 to 20% by weight of inorganic oxide fine particles may be used. It is necessary to use 70% by weight or more of a false-twisted yarn made of a core-sheath type synthetic fiber having a sheath portion containing inorganic oxide fine particles of 3% by weight or less.
The content of inorganic oxide fine particles is 2 to 12% by weight when using a synthetic fiber consisting of a single polymer composition that is not a core-sheath type. If the content is less than 2% by weight, the shielding properties of ultraviolet rays, especially UV-A, will be poor, and if it exceeds 12% by weight, the stability of the spinning process and the properties of the weaving and knitting process will be significantly reduced.
Further, when a core-sheath type synthetic fiber is used, the content of inorganic oxide fine particles in the core is 3 to 20% by weight, preferably 5 to 15% by weight. Further, the content of the sheath portion is 3% by weight or less.
If the inorganic oxide content of the core is less than 3% by weight, the shielding properties of ultraviolet rays, especially UV-A, will be poor, and if it exceeds 20% by weight, it will be difficult to uniformly disperse the fine particles, and the yarn during spinning will deteriorate. There is a possibility that problems such as cutting may occur. The preferred content is 5 to 15% by weight.
Further, since the sheath part is made of core-sheath type synthetic fibers in which the content of inorganic oxide fine particles is 3% by weight or less, thread breakage during the processing process is suppressed.
含有する無機酸化物微粒子は、紡糸時に障害を及ぼさなければ、その種類は特に限定されないが、例えば酸化チタン、酸化亜鉛、酸化マグネシウム、炭酸カルシウム、硫酸バリウム等を用いることができ、中でも、酸化チタンや酸化亜鉛が好ましい。これらの無機酸化物微粒子は、単独もしくは２種以上を併用して用いることができる。使用される無機酸化物微粒子の平均粒径は、１．５μｍ以下であることが好ましい。平均粒径が１．５μｍより大きくなると、紡糸時の糸切れにつながり好ましくない。また、平均粒径が０．２μｍより小さいと、本発明におけるＵＶ－Ａの遮蔽性効果が低下する傾向にあるため、紡糸時の糸切れ等の不具合に影響しない範囲でできるだけ大きい粒径が好ましい。より好ましくは０．３～１μｍである。 The type of inorganic oxide fine particles contained is not particularly limited as long as it does not cause any trouble during spinning, but titanium oxide, zinc oxide, magnesium oxide, calcium carbonate, barium sulfate, etc. can be used, among which titanium oxide and zinc oxide are preferred. These inorganic oxide fine particles can be used alone or in combination of two or more. The average particle size of the inorganic oxide fine particles used is preferably 1.5 μm or less. If the average particle diameter is larger than 1.5 μm, it is undesirable because it may lead to thread breakage during spinning. Furthermore, if the average particle size is smaller than 0.2 μm, the UV-A shielding effect in the present invention tends to decrease, so it is preferable that the particle size is as large as possible without affecting problems such as yarn breakage during spinning. . More preferably, it is 0.3 to 1 μm.
また、前記無機酸化物微粒子を含有する合成繊維は、例えば、ポリエステル系、ポリアミド系、アクリル系、ポリプロピレン系、ポリウレタン系等の合成繊維を用いることができるが、ポリエステル系、ポリアミド系、ポリプロピレン系等の溶融紡糸によって製造される合成繊維が好ましい。 Further, as the synthetic fiber containing the inorganic oxide fine particles, for example, polyester-based, polyamide-based, acrylic-based, polypropylene-based, polyurethane-based synthetic fibers can be used, and polyester-based, polyamide-based, polypropylene-based, etc. Synthetic fibers produced by melt spinning are preferred.
芯鞘型合成繊維の場合、芯部と鞘部は同一のポリマー組成であっても、異なるポリマー組成であってもよい。例えば、ポリエステル系芯鞘型合成繊維の場合、芯部がレギュラーポリエステルで鞘部が共重合ポリエステルであってもよい。また、ポリアミド系芯鞘型合成繊維の場合、芯部がナイロン６６で鞘部がナイロン６であってもよい。
また、芯部と鞘部は同心円状に複合されていてもよく、偏心して複合されていてもよい。芯成分と鞘成分の重量比は１／４～４／１の範囲が好ましい。芯成分の重量比が１／４未満であると紫外線遮蔽効果が劣るものとなり、４／１を越えると紡糸時に芯成分がフィラメントの表面に露出し、安定した芯鞘形状が難しくなる。好ましい芯鞘比は１／２～２／１であり、さらに好ましくは１／１である。
In the case of core-sheath type synthetic fibers, the core and sheath portions may have the same polymer composition or different polymer compositions. For example, in the case of a polyester core-sheath type synthetic fiber, the core may be made of regular polyester and the sheath portion may be made of copolymerized polyester. Further, in the case of a polyamide core-sheath type synthetic fiber, the core portion may be made of nylon 66 and the sheath portion may be made of nylon 6.
Further, the core portion and the sheath portion may be combined concentrically or eccentrically. The weight ratio of the core component to the sheath component is preferably in the range of 1/4 to 4/1. If the weight ratio of the core component is less than 1/4, the ultraviolet shielding effect will be poor, and if it exceeds 4/1, the core component will be exposed on the surface of the filament during spinning, making it difficult to obtain a stable core-sheath shape. The preferred core/sheath ratio is 1/2 to 2/1, more preferably 1/1.
また、無機酸化物微粒子を含有する合成繊維の断面形状は特に限定されるものでなく、丸形、三角、Ｙ型、Ｌ型、Ｗ型、扁平、ドッグボーン型、多葉型等何れの形状であっても良い。また、繊維の形態は長繊維でも短繊維でも良く、長さ方向に均一な太さのものや太細のある糸条でもよいが、本発明のダブル編物は無機酸化微粒子を含有する仮撚加工糸を含むものであることが必要であり、ピリングやスナッキングの物性面からは長繊維で仮撚捲縮加工が施されたものが好ましい。丸編み素材は一般的に組織の密度が低くなるため、通気性に対しては良好となるが、ＵＶ－Ａの遮蔽性が不十分となる。そのため糸に仮撚加工を施したものを用いることにより、好ましい厚みと見掛け密度が得やすくなる。これにより高通気でありながら、ＵＶ－Ａの遮蔽性に優れた丸編み素材を得ることができる。
また、本発明に使用される仮撚加工糸の仮撚方法は特に限定されるものではなく、フリクション、ピン仮撚等の方法が挙げられ、また仮撚における熱処理として１段ヒーターや２段ヒーター等が挙げられるが、特に熱捲縮性の大きい１段ヒーター糸が好ましく使用される。
Furthermore, the cross-sectional shape of the synthetic fiber containing inorganic oxide fine particles is not particularly limited, and may be any shape such as round, triangular, Y-shaped, L-shaped, W-shaped, flat, dogbone, multilobal, etc. It may be. In addition, the fibers may be in the form of long fibers or short fibers, and may have uniform thickness in the length direction or thick and thin threads, but the double knitted fabric of the present invention is fabricated by false twisting containing inorganic oxide fine particles. It needs to contain yarn, and from the viewpoint of physical properties against pilling and snacking, it is preferable to use long fibers that have been subjected to a false twist crimp process. Circular knitted materials generally have a low tissue density, so they have good breathability, but have insufficient UV-A shielding properties. Therefore, by using a yarn that has been subjected to a false twisting process, it becomes easier to obtain a preferable thickness and apparent density. This makes it possible to obtain a circular knitted material that is highly air permeable and has excellent UV-A shielding properties.
Further, the method of false twisting the false twisted yarn used in the present invention is not particularly limited, and methods such as friction and pin false twisting may be mentioned. etc., but one-stage heater yarn with particularly high thermal crimpability is preferably used.
本発明で使用する合成繊維の繊度は、特に限定されるものではないが、衣料用として用いることを考慮すると総繊度は２２～１６６ｄｔｅｘ、単糸繊度は１～５ｄｔｅｘが好ましい。特に過酷な条件にも耐え得なければならないスポーツ衣料用布帛の場合には、１．１～５．５ｄｔｅｘがより好ましく、柔らかな肌触りや風合を重視するインナー衣料用布帛の場合には、０．５～３ｄｔｅｘがより望ましい。総繊度が１６６ｄｔｅｘより大きくなると、編物自体の重量が重くなり、衣料とした場合の着心地などを損なう虞がある。また、２２ｄｔｅｘより小さくなると、編物自体をハイゲージの高密度で編み立てする必要があり、編み立て時において、品質が不安定になると共に生産効率が悪くなるなどの虞がある。また、高密度となるため、通気度１５０ｃｃ／ｃｍ２／ｓｅｃが得られない虞がある。 The fineness of the synthetic fiber used in the present invention is not particularly limited, but considering that it is used for clothing, the total fineness is preferably 22 to 166 dtex, and the single yarn fineness is 1 to 5 dtex. In the case of fabrics for sports clothing that must be able to withstand especially harsh conditions, 1.1 to 5.5 dtex is more preferable, and in the case of fabrics for innerwear where soft touch and texture are important, 0 .5 to 3 dtex is more desirable. When the total fineness is greater than 166 dtex, the weight of the knitted fabric itself becomes heavy, and there is a risk that comfort when used as clothing may be impaired. Moreover, if it is smaller than 22 dtex, the knitted fabric itself needs to be knitted at a high gauge and high density, and there is a risk that the quality will become unstable and production efficiency will deteriorate during knitting. Furthermore, since the density is high, there is a possibility that an air permeability of 150 cc/cm 2 /sec may not be obtained.
また、本発明の布帛は本発明の目的を損なわない範囲内で、無機酸化物微粒子を含有しない繊維が混用されていても良い。混用される繊維にはポリエステル、ポリアミド、ポリウレタン、アクリル等の合成繊維や、綿、麻、ウール等の天然繊維等が好ましく用いられるが、特に限定されるものではない。 Further, the fabric of the present invention may contain fibers that do not contain inorganic oxide fine particles within a range that does not impair the purpose of the present invention. The fibers to be mixed are preferably synthetic fibers such as polyester, polyamide, polyurethane, and acrylic, and natural fibers such as cotton, linen, and wool, but are not particularly limited.
混用の方法は、混紡、エアー混繊、交撚、複合仮撚（伸度差仮撚等）等の手段で糸を複合したり、交編により混用することができる。交編の場合、表裏面の少なくとも一方に用いたり、１本交互や２本交互等で配置したり、２層等で配置する方法等で混用することができるが、本発明のダブル編物においては、片側全面に配置されていることが好ましい。
また、無機酸化微粒子を含有しない繊維と混用する場合は、紫外線遮蔽性を低下させないために、無機酸化物微粒子を含有した合成繊維を、ダブル編物の重量の７０重量％以上用いることが必要であり、更には９０重量％以上であることが好ましい。
As for the mixing method, yarns can be compounded by means such as blending, air blending, mixed twisting, compound false twisting (elongation difference false twisting, etc.), or mixed yarns can be mixed by mixed knitting. In the case of interlaced knitting, it can be used on at least one of the front and back sides, arranged alternately, alternately, or in two layers, etc., but in the double knitted fabric of the present invention, , is preferably arranged on the entire surface of one side.
Furthermore, when mixed with fibers that do not contain inorganic oxide fine particles, it is necessary to use synthetic fibers containing inorganic oxide fine particles in an amount of at least 70% by weight of the double knitted fabric in order not to reduce the ultraviolet shielding properties. , more preferably 90% by weight or more.
また、ダブル編物には、無機酸化物微粒子の含有量が２～１２重量％の合成繊維、及び／又は無機酸化物微粒子の含有量が３～２０重量％の芯部と、無機酸化物微粒子の含有量が３重量％以下の鞘部を有する芯鞘型合成繊維からなる仮撚加工糸が、ダブル編物全体に対し７０重量％以上含まれること必要であり、９０重量％以上含まれることが更に好ましい。７０重量％未満であるとＵＶ－Ａが十分遮蔽されない虞がある。 In addition, the double knitted fabric includes a synthetic fiber containing 2 to 12% by weight of inorganic oxide particles and/or a core containing 3 to 20% by weight of inorganic oxide particles, and a core containing 3 to 20% by weight of inorganic oxide particles. False-twisted yarn made of core-sheath type synthetic fibers having a sheath content of 3% by weight or less is required to be included at least 70% by weight, and more preferably at least 90% by weight based on the entire double knitted fabric. preferable. If it is less than 70% by weight, UV-A may not be sufficiently blocked.
本発明のダブル編物の厚みは５００～１０００μｍが好ましく、６００～９００μｍがより好ましい。厚みが５００μｍより小さいとＵＶ－Ａの遮蔽率が十分得られない虞があり、１０００μｍより大きいと通気性が損なわれたり、風合が硬くなる虞がある。
また、本発明のダブル編物の見掛け密度は０．１８～０．２４ｇ／ｃｍ３であり、０．２～０．２３ｇ／ｃｍ３であることがより好ましい。見掛け密度が０．１８ｇ／ｃｍ３より小さいと十分なＵＶ－Ａ遮蔽性が得られない虞があり、０．２４ｇ／ｃｍ３より大きいと通気性が損なわれたり、風合が硬くなる虞がある。
ダブル編物の厚みと見掛け密度が共に上記範囲であることにより、ＵＶ-Ａの遮蔽性と通気性が両立しやすくなる。
編成するための編機のゲージ数としては、特に限定されるものではなく、上記に示すカバーファクターの範囲の編物が編めるものであれば良い。
The thickness of the double knitted fabric of the present invention is preferably 500 to 1000 μm, more preferably 600 to 900 μm. If the thickness is less than 500 μm, there is a risk that a sufficient UV-A shielding rate cannot be obtained, and if it is larger than 1000 μm, there is a risk that air permeability may be impaired or the texture may become hard.
Further, the apparent density of the double knitted fabric of the present invention is 0.18 to 0.24 g/cm 3 , more preferably 0.2 to 0.23 g/cm 3 . If the apparent density is less than 0.18 g/ cm3 , sufficient UV-A shielding properties may not be obtained, and if it is greater than 0.24 g/ cm3 , breathability may be impaired or the texture may become hard. be.
When the thickness and apparent density of the double knitted fabric are both within the above ranges, it becomes easy to achieve both UV-A shielding properties and breathability.
The gauge number of the knitting machine for knitting is not particularly limited, as long as it can knit a fabric within the cover factor range shown above.
本発明に係るダブル編物においては、通気度が１５０ｃｃ／ｃｍ２／ｓｅｃ以上、好ましくは２００ｃｃ／ｃｍ２／ｓｅｃ以上が必要である。１５０ｃｃ／ｃｍ２／ｓｅｃ未満であると、一般的に夏場において使用されるスポーツ、インナー衣料ではムレ感の解消や汗の気化熱による清涼性や冷却性が得られない虞がある。また、３００ｃｃ／ｃｍ２／ｓｅｃを超えると、構造的にＵＶ－Ａの十分な遮蔽性を得ることが困難となる虞がある。 The double knitted fabric according to the present invention requires an air permeability of 150 cc/cm 2 /sec or more, preferably 200 cc/cm 2 /sec or more. If it is less than 150 cc/cm 2 /sec, there is a risk that sports and inner clothing commonly used in the summer may not be able to eliminate stuffiness or provide coolness and cooling properties due to the heat of vaporization of sweat. Furthermore, if it exceeds 300 cc/cm 2 /sec, it may become structurally difficult to obtain sufficient UV-A shielding properties.
本発明の編物のＵＶ－Ａ平均透過率は１２％以下である。１２％以下であればＰＡ表示で表わされる日本化粧品工業会によるＵＶ－Ａ防止効果測定法基準においても十分なＵＶ－Ａ防止効果が得られるとされ、皮膚がんの発生や、免疫力の低下、ＤＮＡダメージ、さらには、シミやシワなどの光老化現象を抑制することに効果を発揮する。
また、ＵＶ－Ａの平均透過率とは、分光光度計により測定される、３２０ｎｍ～４００ｎｍの範囲の紫外光の透過率の平均値である。
また、本発明の編物の可視光平均透過率は、１５～２５％が好ましく、２０～２３％であることがより好ましい。可視光平均透過率が１５％未満であると、１５０ｃｃ／ｃｍ２／ｓｅｃの通気度が得られず、清涼性を得られない虞がある。可視光平均透過率が２５％を越えると、糸束がカバーしきれない開口部等から、ＵＶ－Ａも透過し、皮膚の保護が不充分なものとなる虞がある。
本発明における可視光平均透過率とは、編物にどの程度の面積割合の貫通孔が存在するかを示すものであり、４００ｎｍ～７００ｎｍの範囲の可視光平均透過率を分光光度計により測定し、その平均値より得られる値である。
The average UV-A transmittance of the knitted fabric of the present invention is 12% or less. If it is less than 12%, it is said that sufficient UV-A prevention effect can be obtained according to the Japan Cosmetic Industry Association's UV-A prevention effect measurement method standard expressed by PA indication, and it is said to be effective in preventing the occurrence of skin cancer and weakening of immunity. It is effective in suppressing DNA damage and photoaging phenomena such as age spots and wrinkles.
Further, the average transmittance of UV-A is the average value of the transmittance of ultraviolet light in the range of 320 nm to 400 nm, as measured by a spectrophotometer.
Further, the average visible light transmittance of the knitted fabric of the present invention is preferably 15 to 25%, more preferably 20 to 23%. If the visible light average transmittance is less than 15%, an air permeability of 150 cc/cm 2 /sec may not be obtained, and there is a possibility that coolness may not be obtained. If the average visible light transmittance exceeds 25%, UV-A will also be transmitted through openings that cannot be completely covered by the thread bundle, resulting in insufficient protection of the skin.
The average visible light transmittance in the present invention indicates the area ratio of through holes present in the knitted fabric, and the average visible light transmittance in the range of 400 nm to 700 nm is measured using a spectrophotometer. This value is obtained from the average value.
上記のようなダブル編物は、無機酸化微粒子を含有する仮撚加工糸の使用と、ダブルニットの構成による素材の膨らみを持たすことにより、高通気性と紫外線の遮蔽性という、相反する機能を両立することが可能となり、この編物を用いた衣料は、紫外線、特にＵＶ-Ａによる皮膚障害を抑制できるとともに、通気性が良く着心地の良い衣料を得ることができる。この編物は衣料の一部はたは全部に用いることができる。 The double knit fabric shown above achieves the contradictory functions of high air permeability and ultraviolet shielding properties by using false twisted yarn containing fine inorganic oxide particles and by creating a bulge in the material due to the double knit structure. Clothing using this knitted fabric can suppress skin damage caused by ultraviolet rays, particularly UV-A, and can provide clothing that is breathable and comfortable to wear. This knitted fabric can be used for part or all of the garment.
本発明を実施例により更に具体的に説明するが、本発明は実施例に限定されるものではない。
なお、実施における布帛の性量、物性は下記の方法を用いて測定、評価し、表１にまとめて示す。
The present invention will be explained in more detail with reference to Examples, but the present invention is not limited to the Examples.
In addition, the properties and physical properties of the fabric in the implementation were measured and evaluated using the following methods, and are summarized in Table 1.
編地厚み
デジタル定圧厚み計（測定子面積 １０ｃｍ２、圧力３．７ｇｆ／ｃｍ２ 株式会社テックロック社製）により測定した。
見掛け密度
編地の厚み及び生地の目付から次式により算出した。
見掛け密度（ｇ／ｃｍ３）＝目付（ｇ／ｍ２）／生地厚み（μｍ）
カバーファクター
デンシメーターにより測定した生地の経および緯の２．５４ｃｍあたりの本数と、使用している糸のデシテックス数から、次式により算出した。
Ｋ＝（（Ｄｗ√Ｄｔ１＋Ｄｃ√Ｄｔ１）＋（Ｄｗ√Ｄｔ２＋Ｄｃ√Ｄｔ２））／２
Ｋ：カバーファクター
Ｄｗ：編物の経密度 ウェル数／２．５４ｃｍ
Ｄｃ：編物の緯密度 コース数／２．５４ｃｍ
Ｄｔ１：編物の片面に使用される糸の平均繊度（ｄｔｅｘ）
Ｄｔ２：編物のもう一方の片面に使用される糸の平均繊度（ｄｔｅｘ）
可視光透過率およびＵＶ－Ａの平均透過率の測定
分光光度計を用い、３２０～７００ｎｍの範囲における可視光および紫外光透過率を５ｎｍ間隔で測定し、可視光透過率は４０５～７００ｎｍの範囲の透過率の平均値、ＵＶ－Ａの透過率は３２０～４００ｎｍの範囲の透過率の平均値を算出した。
通気度
ＪＩＳ－Ｌ－１０９６フラジール法に準じて通気度（ｃｃ／ｃｍ2 ／ｓｅｃ）を測定した。
Knitted Fabric Thickness Measured using a digital constant-pressure thickness meter (measurement element area 10 cm 2 , pressure 3.7 gf/cm 2 manufactured by Techlock Co., Ltd.).
Apparent Density Calculated from the thickness of the knitted fabric and the basis weight of the fabric using the following formula.
Apparent density (g/cm 3 ) = basis weight (g/m 2 )/fabric thickness (μm)
Cover factor It was calculated by the following formula from the number of threads per 2.54 cm of the warp and weft of the fabric measured with a densimeter and the decitex number of the thread used.
K=((Dw√Dt1+Dc√Dt1)+(Dw√Dt2+Dc√Dt2))/2
K: Cover factor Dw: Warp density of knitted fabric Number of wells/2.54cm
Dc: Weft density of knitted fabric Number of courses/2.54cm
Dt1: Average fineness (dtex) of yarn used on one side of knitted fabric
Dt2: Average fineness (dtex) of the yarn used on the other side of the knitted fabric
Measurement of visible light transmittance and average UV-A transmittance Visible light and ultraviolet light transmittance in the range of 320 to 700 nm was measured at 5 nm intervals using a spectrophotometer, and the visible light transmittance was in the range of 405 to 700 nm. For the UV-A transmittance, the average value of the transmittance in the range of 320 to 400 nm was calculated.
Air Permeability Air permeability (cc/cm 2 /sec) was measured according to JIS-L-1096 Frazier method.
〔実施例1〕
ハニカム編部分を、平均粒径０．２５μｍの酸化チタンを８．０重量％含有する芯部と、同様の酸化チタンを３．０重量％含有する鞘部からなる、芯鞘重量比率が２／１である同心円状のポリエステル芯鞘型合成繊維（８４ｄｔｅｘ／２４ｆ）を１段ヒーターで仮撚加工したものと、平均粒径０．２５μｍの酸化チタンを０．３重量％含有するポリエステル合成繊維（８４ｄｔｅｘ／３６ｆ）を１段ヒーターで仮撚加工をしたものとを、１：１の割合で使用して編成してなり、
天竺編部分を、平均粒径０．２５μｍの酸化チタンを３．０重量％含有するポリエステル合成繊維（８４ｄｔｅｘ／３６ｆ）を１段ヒーターで仮撚加工したものを使用して、２８ゲージの編機にて天竺ハニカム組織のダブル編物を編成した。
この編物を、精練後、１８０℃乾熱でプレセットを施し、蛍光白色による染色を行った後、ファイナルセットを行い、コース密度５２本／２．５４ｃｍ、ウエル密度４３本／２．５４ｃｍのダブル編物を得た。
ハニカム部分のポリエステル芯鞘型合成繊維の糸重量割合は２７重量％、酸化チタンを０．３重量％含有するポリエステル合成繊維の糸重量割合は３０重量％で、天竺部分の糸重量割合は４３重量％であった。評価結果を表１に示す。
[Example 1]
The honeycomb knitted part consists of a core containing 8.0% by weight of titanium oxide with an average particle size of 0.25 μm and a sheath containing 3.0% by weight of the same titanium oxide, with a core-sheath weight ratio of 2/2. Concentric polyester core-sheath type synthetic fiber (84 dtex/24 f) of No. 1 was false-twisted using a single-stage heater, and polyester synthetic fiber containing 0.3% by weight of titanium oxide with an average particle size of 0.25 μm ( 84dtex/36f) which has been false-twisted using a single-stage heater, in a ratio of 1:1.
The jersey knitted part was fabricated using a polyester synthetic fiber (84 dtex/36 f) containing 3.0% by weight of titanium oxide with an average particle size of 0.25 μm, which was false twisted using a single-stage heater, using a 28 gauge knitting machine. A double-knit fabric with a cotton jersey honeycomb structure was knitted at the same time.
After scouring, this knitted fabric was preset with dry heat at 180°C, dyed with fluorescent white, and then final set to a double layer with a course density of 52 threads/2.54 cm and a well density of 43 threads/2.54 cm. I got knitting.
The thread weight percentage of the polyester core-sheath type synthetic fiber in the honeycomb part is 27% by weight, the thread weight percentage of the polyester synthetic fiber containing 0.3% by weight of titanium oxide is 30% by weight, and the thread weight percentage in the jersey part is 43% by weight. %Met. The evaluation results are shown in Table 1.
〔実施例２〕
天竺編部分とピンメッシュ編部分を、平均粒径０．２５μｍの酸化チタンを３．０重量％含有するポリエステル合成繊維（８４ｄｔｅｘ／７２ｆ）を１段ヒーターで仮撚加工したものを使用した天竺ピンメッシュのダブル組織の丸編み素材を３２ゲージの編み機により編成した。
この編物を、精練後、１８０℃乾熱でプレセットを施し、蛍光白色による染色を行った後、ファイナルセットを行い、コース密度６０本／２．５４ｃｍ、ウエル密度４８本／２．５４ｃｍのダブル編物を得た。天竺部分の糸重量割合は５２重量％、ピンメッシュ部分の糸重量割合は４８重量％であった。評価結果を表１に示す。
[Example 2]
A jersey pin in which the jersey knitted part and the pin mesh knitted part are made of polyester synthetic fiber (84dtex/72f) containing 3.0% by weight of titanium oxide with an average particle size of 0.25μm, which has been false-twisted using a single-stage heater. A double mesh circular knitted material was knitted using a 32 gauge knitting machine.
After scouring, this knitted fabric was preset with dry heat at 180°C, dyed with fluorescent white, and then final set to a double layer with a course density of 60 pieces/2.54 cm and a well density of 48 pieces/2.54 cm. I got knitting. The thread weight percentage of the cotton jersey portion was 52% by weight, and the thread weight percentage of the pin mesh portion was 48% by weight. The evaluation results are shown in Table 1.
〔実施例３〕
ハニカム編部分を、平均粒径０．２５μｍの酸化チタンを８．０重量％含有する芯部と、酸化チタンを３．０重量％含有する鞘部からなり、芯鞘重量比率２／１である同心円状のポリエステル芯鞘型合成繊維（８４ｄｔｅｘ／２４ｆ）を１段ヒーターで仮撚加工したものと、平均粒径０．２５μｍの酸化チタンを３．０重量％含有するポリエステル合成繊維（５６ｄｔｅｘ／７２ｆ）を１段ヒーターで仮撚加工したものを、重量比１：１の割合で使用し、
天竺編部分を、平均粒径０．２５μｍの酸化チタンを２重量％含有するポリエステル合成繊維（８４ｄｔｅｘ／３６ｆ）を１段ヒーターで仮撚加工したものを用い、２８ゲージの編機にて天竺ハニカムのダブル編物を編成した。この編物を、精練後、１８０℃乾熱でプレセットを施し、蛍光白色による染色を行った後、ファイナルセットを行い、コース密度５３本／２．５４ｃｍ、ウエル密度４８本／２．５４ｃｍの編物を得た。ダブル編物の無機酸化微粒子含有仮撚加工糸の割合は１００％であった。天竺部分の糸重量割合は５３重量％、ハニカム部分の糸重量割合は４７重量％であった。評価結果を表１に示す。
[Example 3]
The honeycomb knitted portion consists of a core containing 8.0% by weight of titanium oxide with an average particle size of 0.25 μm and a sheath containing 3.0% by weight of titanium oxide, with a core-sheath weight ratio of 2/1. Concentric polyester core-sheath type synthetic fiber (84 dtex/24 f) false-twisted using a single-stage heater, and polyester synthetic fiber (56 dtex/72 f) containing 3.0% by weight of titanium oxide with an average particle size of 0.25 μm. ) was false-twisted using a single-stage heater at a weight ratio of 1:1,
The jersey knitted part is made of polyester synthetic fiber (84 dtex/36f) containing 2% by weight of titanium oxide with an average particle size of 0.25 μm, which has been false-twisted using a single-stage heater, and is made into a cotton jersey honeycomb using a 28 gauge knitting machine. A double knitted fabric was knitted. After scouring, this knitted fabric was preset with dry heat at 180°C, dyed with fluorescent white, and then final set, resulting in a knitted fabric with a course density of 53 lines/2.54 cm and a well density of 48 lines/2.54 cm. I got it. The ratio of the false twisted yarn containing inorganic oxide fine particles in the double knitted fabric was 100%. The thread weight percentage of the jersey part was 53% by weight, and the thread weight percentage of the honeycomb part was 47% by weight. The evaluation results are shown in Table 1.
〔実施例４〕
ピンメッシュ編部分を、平均粒径０．２５μｍの酸化チタンを１０．０重量％含有するポリエステル合成繊維（８４ｄｔｅｘ／４８ｆ）を１段ヒーターで仮撚加工したものと、平均粒径０．２５μｍの酸化チタンを３．０重量％含有するポリエステル合成繊維（５６ｄｔｅｘ／３６ｆ）を１段ヒーターで仮撚加工したものを、重量比で３：２の割合で使用し、
天竺編部分を、平均粒径０．２５μｍの酸化チタンを３．０重量％含有するポリエステル合成繊維（５６ｄｔｅｘ／７２ｆ）を１段ヒーターで仮撚加工したものを用い、３２ゲージの編機にて天竺ピンメッシュのダブル編物を編成した。この編物を、精練後、１８０℃乾熱でプレセットを施し、蛍光白色による染色を行った後、ファイナルセットを行い、コース密度６８本／２．５４ｃｍ、ウエル密度５０本／２．５４ｃｍの編物を得た。ダブル編物の無機酸化微粒子含有仮撚加工糸の割合は１００％であった。天竺部分の糸重量割合は４７重量％、ハニカム部分の糸重量割合は５３重量％であった。評価結果を表１に示す。
[Example 4]
The pin mesh knitted part is made of polyester synthetic fiber (84 dtex/48 f) containing 10.0% by weight of titanium oxide with an average particle size of 0.25 μm, which has been false-twisted using a single-stage heater, and a fabric with an average particle size of 0.25 μm. Polyester synthetic fibers (56 dtex/36 f) containing 3.0% by weight of titanium oxide were false-twisted using a single-stage heater at a weight ratio of 3:2,
The jersey knitted part was made of polyester synthetic fiber (56 dtex/72 f) containing 3.0% by weight of titanium oxide with an average particle size of 0.25 μm, which was false-twisted using a single-stage heater, and was fabricated using a 32-gauge knitting machine. A double knitted fabric of jersey pin mesh was knitted. After scouring, this knitted fabric was preset with dry heat at 180°C, dyed with fluorescent white, and then final set, resulting in a knitted fabric with a course density of 68 lines/2.54cm and a well density of 50 lines/2.54cm. I got it. The ratio of the false twisted yarn containing inorganic oxide fine particles in the double knitted fabric was 100%. The thread weight percentage of the jersey part was 47% by weight, and the thread weight percentage of the honeycomb part was 53% by weight. The evaluation results are shown in Table 1.
〔比較例１〕
平均粒径０．２５μｍの酸化チタンを３．０重量％含有するポリエステル合成繊維（８４ｄｔｅｘ／３６ｆ）を１段ヒーターで仮撚加工したものを、２８ゲージの編機にて、ピンメッシュ編部分と天竺編部分を有する天竺ピンメッシュのダブル編物を編成した。この編物を、精練後、１８０℃乾熱でプレセットを施し、蛍光白色による染色を行った後、ファイナルセットを行い、コース密度４８本／２．５４ｃｍ、ウエル密度４８／２．５４ｃｍの編物を得た。ダブル編物の無機酸化微粒子含有仮撚加工糸の割合は１００％であった。天竺部分の糸重量割合は５０重量％、ハニカム部分の糸重量割合は５０重量％であった。評価結果を表１に示す。
[Comparative example 1]
A polyester synthetic fiber (84 dtex/36 f) containing 3.0% by weight of titanium oxide with an average particle size of 0.25 μm was false-twisted using a single-stage heater, and then twisted into a pin mesh knitted part using a 28-gauge knitting machine. A double knit fabric of jersey pin mesh having a jersey knitted part was knitted. After scouring, this knitted fabric was preset with dry heat at 180°C, dyed with fluorescent white, and then final set to produce a knitted fabric with a course density of 48 threads/2.54 cm and a well density of 48/2.54 cm. Obtained. The ratio of the false twisted yarn containing inorganic oxide fine particles in the double knitted fabric was 100%. The weight percentage of yarn in the jersey portion was 50% by weight, and the weight percentage of yarn in the honeycomb portion was 50% by weight. The evaluation results are shown in Table 1.
〔比較例２〕
平均粒径０．２５μｍの酸化チタンを３．０重量％含有するポリエステル合成繊維６０番手スパン糸を１段ヒーターで仮撚加工したものを用いて、２８ゲージの編機にて、鹿の子組織のダブル編物を編成した。この編物を、精練後、１８０℃乾熱でプレセットを施し、蛍光白色による染色を行った後、ファイナルセットを行い、コース密度５４本／２．５４ｃｍ、ウエル密度４５／２．５４ｃｍの編物を得た。ダブル編物の無機酸化微粒子含有仮撚加工糸の割合は１００％であった。評価結果を表１に示す。
[Comparative example 2]
A polyester synthetic fiber 60 count spun yarn containing 3.0% by weight of titanium oxide with an average particle size of 0.25 μm was false-twisted using a single-stage heater, and a pique texture double yarn was fabricated using a 28-gauge knitting machine. I organized the knitting. After scouring, this knitted fabric was preset with dry heat at 180°C, dyed with fluorescent white, and then final set to produce a knitted fabric with a course density of 54 threads/2.54 cm and a well density of 45/2.54 cm. Obtained. The ratio of the false twisted yarn containing inorganic oxide fine particles in the double knitted fabric was 100%. The evaluation results are shown in Table 1.
〔比較例３〕
平均粒径０．２５μｍの酸化チタンを０．３重量％含有するポリエステル合成繊維（８４ｄｔｅｘ／３６ｆ）を１段ヒーターで仮撚加工したものを、２８ゲージの編機にて、天竺部分とピンメッシュ部分に用いた天竺ピンメッシュのダブル編物を編成した。この編物を、精練後、１８０℃乾熱でプレセットを施し、蛍光白色による染色を行った後、ファイナルセットを行い、コース密度５２本／２．５４ｃｍ、ウエル密度４４本／２．５４ｃｍの編物を得た。ダブル編物の無機酸化微粒子含有仮撚加工糸の割合は５０％であった。評価結果を表１に示す。
[Comparative example 3]
A polyester synthetic fiber (84 dtex/36 f) containing 0.3% by weight of titanium oxide with an average particle size of 0.25 μm was false-twisted using a single-stage heater, and then the jersey part and pin mesh were fabricated using a 28-gauge knitting machine. A double knitted fabric of jersey pin mesh was used for the section. After scouring, this knitted fabric was preset with dry heat at 180°C, dyed with fluorescent white, and then final set, resulting in a knitted fabric with a course density of 52 lines/2.54 cm and a well density of 44 lines/2.54 cm. I got it. The ratio of the false twisted yarn containing inorganic oxide fine particles in the double knitted fabric was 50%. The evaluation results are shown in Table 1.
〔比較例４〕
ピンメッシュ編部分を、平均粒径０．２５μｍの酸化チタンを３．０重量％含有するポリエステル合成繊維（８４ｄｔｅｘ／３６ｆ）を１段ヒーターで仮撚加工したものを用い、
天竺編部分に、平均粒径０．２５μｍの酸化チタンを３．０重量％含有するポリエステル合成繊維（８４ｄｔｅｘ／３６ｆ）を１段ヒーターで仮撚加工したものと、仮撚加工していない延伸糸で平均粒径０．２５μｍの酸化チタンを３．０重量％含有するポリエステル合成繊維（８４ｄｔｅｘ／７２ｆ）を用いた天竺ピンメッシュのダブル組織の丸編み素材を２８ゲージの編み機により作製し、精練後、１８０℃乾熱でプレセットを施し、蛍光白色による染色を行った後、５２コース／２．５４ｃｍ、４０ウエル／２．５４ｃｍでファイナルセットを行い、目的とする編物を得た。ダブル編物の無機酸化微粒子含有仮撚加工糸の割合は１００％であった。作製した編物の目付、厚み、見掛け密度、カバーファクター、無機酸化微粒子を含有する仮撚加工糸の割合、通気度、可視光透過率、ＵＶ－Ａ透過率を表１に示す。
[Comparative example 4]
The pin mesh knitted part is made of polyester synthetic fiber (84 dtex/36 f) containing 3.0% by weight of titanium oxide with an average particle size of 0.25 μm, which has been false-twisted using a single-stage heater.
In the cotton jersey part, polyester synthetic fiber (84 dtex/36 f) containing 3.0% by weight of titanium oxide with an average particle size of 0.25 μm was false-twisted using a single-stage heater, and a stretched yarn that was not false-twisted. A jersey pin mesh double-structured circular knitted material using a polyester synthetic fiber (84 dtex/72 f) containing 3.0% by weight of titanium oxide with an average particle size of 0.25 μm was produced using a 28 gauge knitting machine, and after scouring. After presetting with dry heat at 180° C. and dyeing with fluorescent white, final setting was performed with 52 courses/2.54 cm and 40 wells/2.54 cm to obtain the desired knitted fabric. The ratio of the false twisted yarn containing inorganic oxide fine particles in the double knitted fabric was 100%. Table 1 shows the basis weight, thickness, apparent density, cover factor, proportion of false twisted yarn containing inorganic oxide fine particles, air permeability, visible light transmittance, and UV-A transmittance of the produced knitted fabric.
〔比較例５〕
平均粒径０．２５μｍの酸化チタンを３．０重量％含有するポリエステル合成繊維（８４ｄｔｅｘ／３６ｆ）を１段ヒーターで仮撚加工したものを用いて、２８ゲージの編機にて、鹿の子組織のダブル編物を編成した。この編物を、精練後、１８０℃乾熱でプレセットを施し、蛍光白色による染色を行った後、ファイナルセットを行い、コース密度４８本／２．５４ｃｍ、ウエル密度３７本／２．５４ｃｍの編物を得た。ダブル編物の無機酸化微粒子含有仮撚加工糸の割合は１００％であった。評価結果を表１に示す。
[Comparative example 5]
A polyester synthetic fiber (84 dtex/36 f) containing 3.0% by weight of titanium oxide with an average particle size of 0.25 μm was false-twisted using a single-stage heater, and a pique texture was created using a 28-gauge knitting machine. A double knit was knitted. After scouring, this knitted fabric was preset with dry heat at 180°C, dyed with fluorescent white, and then final set, resulting in a knitted fabric with a course density of 48 threads/2.54 cm and a well density of 37 threads/2.54 cm. I got it. The ratio of the false twisted yarn containing inorganic oxide fine particles in the double knitted fabric was 100%. The evaluation results are shown in Table 1.
〔表１〕
Claims (3)
一方側が天竺編からなるダブル編物であって、
ダブル編物のカバーファクターが８５０～１２００、ダブル編物の見掛け密度が０．１８～０．２４ｇ／ｃｍ３、ダブル編物のＵＶ－Ａ（波長が３２０～４００ｎｍの紫外線）の平均透過率が１２％以下で、且つ、ダブル編物の通気度が１５０～３００ｃｃ／ｃｍ２／ｓｅｃ、であることを特徴とするダブル編物。 Synthetic fiber containing 2 to 12% by weight of inorganic oxide fine particles, and/or core containing 3 to 20% by weight of inorganic oxide fine particles, and 3% by weight or less of inorganic oxide fine particles. 70% or more by weight of false twisted yarn made of core-sheath type synthetic fiber having a sheath part of
It is a double knitted fabric with one side made of jersey stitch,
The cover factor of the double knitted material is 850 to 1200, the apparent density of the double knitted material is 0.18 to 0.24 g/cm 3 , and the average transmittance of UV-A (ultraviolet light with a wavelength of 320 to 400 nm) of the double knitted material is 12% or less A double knitted fabric characterized in that the double knitted fabric has an air permeability of 150 to 300 cc/cm 2 /sec.
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| JP2015010282A (en) | 2013-06-26 | 2015-01-19 | 帝人フロンティア株式会社 | Woven or knitted fabric excellent in heat shielding properties and heat radiation properties and textile products |
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| JP2000282345A (en) | 1999-03-30 | 2000-10-10 | Asahi Chem Ind Co Ltd | Ultraviolet screening fabric |
| JP2014234579A (en) | 2013-06-04 | 2014-12-15 | 日本エステル株式会社 | Multifilament yarn and woven and knitted fabric of the same |
| JP2015010282A (en) | 2013-06-26 | 2015-01-19 | 帝人フロンティア株式会社 | Woven or knitted fabric excellent in heat shielding properties and heat radiation properties and textile products |
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