JPWO2004088016A1 - FIBER MATERIAL HAVING IMPROVED CLOTH REQUIRED QUALITY AND METHOD FOR IMPROVING THE SAME - Google Patents

FIBER MATERIAL HAVING IMPROVED CLOTH REQUIRED QUALITY AND METHOD FOR IMPROVING THE SAME Download PDF

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JPWO2004088016A1
JPWO2004088016A1 JP2004570154A JP2004570154A JPWO2004088016A1 JP WO2004088016 A1 JPWO2004088016 A1 JP WO2004088016A1 JP 2004570154 A JP2004570154 A JP 2004570154A JP 2004570154 A JP2004570154 A JP 2004570154A JP WO2004088016 A1 JPWO2004088016 A1 JP WO2004088016A1
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fiber
yarn
fibers
fiber material
titanium oxide
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JP3858229B2 (en
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雄祐 廣田
雄祐 廣田
裕夫 牧村
裕夫 牧村
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/38—Threads in which fibres, filaments, or yarns are wound with other yarns or filaments, e.g. wrap yarns, i.e. strands of filaments or staple fibres are wrapped by a helically wound binder yarn
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D02G3/04—Blended or other yarns or threads containing components made from different materials

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Woven Fabrics (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

絹等の天然繊維特有の風合を損なうことなく、経時においても光による黄変や汗による黄ばみが有効に防止され、かつ有毒ガスの付着残留度が少なく、さらに保温性、強度の経時的な低下も有効に防止され得、それのみならず、より低く抑えられた生産コストで製造し得る繊維材料、例えば糸、編物又は織物製品等を提供することを目的とする。 具体的には、０．０１ないし５．０重量％以下の酸化チタンを含有した化学繊維と天然繊維とを接触させてなる改良された被服要求品質を有する繊維材料である。Without damaging the texture peculiar to natural fibers such as silk, yellowing due to light and yellowing due to sweat can be effectively prevented over time, and the adhesion residue of toxic gas is small, and heat retention and strength over time It is an object to provide a fiber material such as a yarn, a knitted fabric or a woven product that can be effectively prevented from being lowered, and can be produced at a lower production cost. Specifically, it is a fiber material having improved clothing requirement quality obtained by bringing a chemical fiber containing 0.01 to 5.0% by weight or less of titanium oxide into contact with a natural fiber.

Description

本発明は、天然繊維特有の風合を有しつつ、なおかつ被服要求品質が改良された繊維材料及びその改良方法に関する。さらに詳細には、酸化チタンを含有する化学繊維と天然繊維からなる繊維材料、例えば糸、該糸からなる編物又は織物に関する。  TECHNICAL FIELD The present invention relates to a fiber material having a texture unique to natural fibers and improved in clothing requirement quality, and a method for improving the same. More specifically, the present invention relates to a fiber material made of a chemical fiber containing titanium oxide and a natural fiber, such as a yarn, a knitted fabric or a woven fabric made of the yarn.

絹等の天然繊維を主体とした、下着、上着、靴下等の編物又は織物製品は、肌触り、見た目等の風合の点において良好であるが、その反面、光の影響による黄変や汗の影響による黄ばみが生じ易い等の欠点をも有している。その為、かかる欠点を克服する為に種々の試みがこれまで為されてきた。例えば、特開平６−１４１７３９号公報は、日光や紫外線の照射で黄変しにくい生糸及び絹を生産する為に、生糸或いは絹にデオキシシチジル酸及びシチジル酸からなる群より選ばれた化合物を含有せしめることを特徴とする生糸及び絹の黄変防止方法を開示している。またその他の技術として、特開２００１−１７２８３５号公報は、遠赤外線放射性材料を含む人造繊維と絹繊維とを組合せて紡績したことを特徴とする耐光性糸及び該耐光性糸を材料の一部として用いた耐光性繊維製品を開示している。さらに、ＷＯ９８／５３１３２号公報は、表面が酸化チタンでメッキされている酸化チタン含有絹繊維を開示し、該絹繊維は酸化チタンの光触媒作用により劣化したり黄変することがないことが記載されている。
しかしながら、これらの公報に記載された発明は、以下に示すような解決すべき課題が残されている。特開平６−１４１７３９号公報において開示されるような、デオキシシチジル酸及びシチジル酸等の紫外線吸収剤を絹自体に含有させることは、該絹の耐光性を向上させて黄変は防止され得るものの、反対に該絹の品質を劣化させ、該絹の肌触り、見た目等の風合を損なうおそれがある。また、特開２００１−１７２８３５号公報においては、遠赤外線放射性材料の入手が比較的困難でかつ高価である為に、これが配合された繊維製品は生産コストが高く、実用化、汎用化の面で課題が残る。さらに、ＷＯ９８／５３１３２号公報においては、絹繊維表面にメッキされた酸化チタンが、汗の影響や体との接触により比較的容易に脱落し、黄変の抑制効果が低下してしまう可能性がある為に、下着や靴下等、皮膚に直接接触する製品の材料として使用するには適切であるとは言い難い。さらに、酸化チタンは絹繊維表面にメッキされるので、絹繊維特有の肌触りや見た目等の風合が表面の該酸化チタンにより損なわれてしまうおそれもある。さらにその上、これら従来の天然繊維を主体として被服に加工した時、作られた被服は、着用されていない未使用品においては、保温性、強度などに関して被服として要求される品質はある程度満足されるものの、被服の着用を繰り返すうちに、熱、光、水分、天候等の影響を受けて前述の被服要求品質が徐々に低下し、もしくは失われていく。例えば、アンモニア臭等の悪臭が着用のうちに被服に染み付いていき、洗濯等によっても容易に消えなくなることはよく見られ、特にホルムアルデヒド等、ハウスシック症の原因物質が経時的に被服に付着し、残留することは、同症の患者にそれだけ苦痛を与えることになる。従って、被服としての商品価値並びに商品寿命を向上させる為にも、それに使用される繊維材料の被服要求品質について改良の必要があり、それが望まれていた。
本発明はかかる要求に応えるべくなされたものであって、絹等の天然繊維特有の風合を損なうことなく、経時においても光による黄変や汗による黄ばみが有効に防止され、かつ有毒ガスの付着残留度が少なく、さらに保温性、強度の経時的な低下も有効に防止され得、それのみならず、より低く抑えられた生産コストで製造し得る繊維材料、例えば糸、編物又は織物製品を提供することを目的とする。Knitted fabrics and textile products such as underwear, outerwear, socks, etc., mainly made of natural fibers such as silk, are good in terms of touch and appearance, but on the other hand, yellowing or sweat due to the influence of light. There are also disadvantages such as yellowing due to the influence of the above. For this reason, various attempts have been made to overcome such drawbacks. For example, Japanese Patent Laid-Open No. 6-141739 discloses a compound selected from the group consisting of deoxycytidylic acid and cytidylic acid on raw silk or silk in order to produce raw silk and silk that are not easily yellowed by irradiation with sunlight or ultraviolet rays. The raw silk and silk yellowing prevention method characterized by making it contain is disclosed. As another technique, Japanese Patent Application Laid-Open No. 2001-172835 discloses a light-resistant yarn obtained by spinning a combination of an artificial fiber containing a far-infrared radioactive material and a silk fiber, and the light-resistant yarn as a part of the material. The light-resistant fiber product used as is disclosed. Furthermore, WO98 / 53132 discloses a titanium oxide-containing silk fiber whose surface is plated with titanium oxide, and it is described that the silk fiber does not deteriorate or yellow due to the photocatalytic action of titanium oxide. ing.
However, the inventions described in these publications still have the following problems to be solved. Inclusion of an ultraviolet absorber such as deoxycytidylic acid and cytidylic acid as disclosed in JP-A-6-141739 improves the light resistance of the silk and can prevent yellowing. However, on the contrary, the quality of the silk may be deteriorated, and the texture of the silk may be impaired. In Japanese Patent Laid-Open No. 2001-172835, since it is relatively difficult and expensive to obtain far-infrared radioactive materials, the fiber product in which the material is blended has a high production cost and is practical and versatile. Issues remain. Furthermore, in WO98 / 53132, titanium oxide plated on the surface of silk fibers may fall off relatively easily due to the influence of sweat or contact with the body, and the effect of suppressing yellowing may be reduced. For this reason, it is difficult to say that it is suitable for use as a material for products that come into direct contact with the skin, such as underwear and socks. Furthermore, since titanium oxide is plated on the surface of the silk fiber, there is a possibility that the texture of the silk fiber and the texture such as appearance may be damaged by the titanium oxide on the surface. In addition, when these conventional natural fibers are mainly processed into clothing, the quality of clothing that is required for clothing in terms of heat retention, strength, etc. is satisfied to some extent in the unused clothing that is made. However, as clothing is repeatedly worn, the above-mentioned required quality of clothing gradually deteriorates or is lost due to the influence of heat, light, moisture, weather, and the like. For example, it is common that bad odors such as ammonia odors permeate clothes during wear and do not disappear easily even after washing. Especially, causative substances such as formaldehyde adhere to clothes over time. Remaining will be more painful for patients with the same disease. Therefore, in order to improve the commercial value as a clothing and the product life, it is necessary to improve the quality required for clothing of the fiber material used therefor, which has been desired.
The present invention has been made to meet such demands, and without damaging the texture peculiar to natural fibers such as silk, yellowing due to light and yellowing due to sweat can be effectively prevented over time, and toxic gas A fiber material, such as a yarn, a knitted fabric or a textile product, which can be produced at a lower production cost can be effectively prevented, as well as a decrease in the residual adhesion, and also can effectively prevent a decrease in heat retention and strength over time. The purpose is to provide.

すなわち本発明は、酸化チタンを含有した化学繊維と天然繊維からなり、これら両繊維が相互に接触する形態で存在することを特徴とする改良された被服要求品質を有する繊維材料に関する。
その中で好ましい態様は、前記繊維材料は、酸化チタンを含有した化学繊維と天然繊維とから紡いで作られた糸である改良された被服要求品質を有する繊維材料に関する。
また本発明は、前記繊維材料は、酸化チタンを含有した化学繊維からなる芯糸の外表面に、天然繊維からなる鞘糸を巻き付けて作られた複合糸であることを特徴とする改良された被服要求品質を有する繊維材料に関する。
本発明の別の態様は、前記複合糸は、前記芯糸が実質露出しない状態で前記鞘糸が前記芯糸に巻き付けられていることを特徴とする改良された被服要求品質を有する繊維材料に関する。
また前記繊維材料は、酸化チタンを含有した化学繊維からなる糸と天然繊維からなる糸とを互いに撚り合わせて作られた撚り糸である改良された被服要求品質を有する繊維材料に関する。
本発明はまた、前記繊維材料は、布を構成する糸の少なくとも一部において、前述の糸、前述の複合糸又は前述の撚り糸を使用して織られた織布又は編成された編物である改良された被服要求品質を有する繊維材料にも関する。
本発明の好ましい態様は、前記繊維材料は、酸化チタンを含有した化学繊維からなる糸を織布の中間材の経糸及び／又は緯糸に用い、該中間材にその上方及び下方より天然繊維からなる糸を該中間材を覆い隠すように織り込んで作られた織布である改良された被服要求品質を有する繊維材料に関する。
本発明の他の態様は、前記繊維材料は、酸化チタンを含有する化学繊維の糸を用いて織られた布と、その上下両側に重ね接結させた、天然繊維の糸を用いて織られた布とからなるサンドイッチ構造布である改良された被服要求品質を有する繊維材料にも関する。
本発明の好ましい態様は、前記化学繊維には、繊維全重量に基づいて０．０１ないし５．０重量％の酸化チタンが含有されている前述の改良された被服要求品質を有する繊維材料に関する。
本発明はとりわけ、前記天然繊維は絹である前述の改良された被服要求品質を有する繊維材料に関する。
また本発明は、前記化学繊維は、ポリエステル系繊維、ポリアミド系繊維（ナイロン繊維）、ポリプロピレン系繊維、ポリエチレン系繊維、ポリプロミックス系繊維、ポリクラール系繊維等の合成繊維、ビスコース繊維、銅アンモニアレーヨン等の再生繊維及びアセテート繊維等の半合成繊維からなる群より選択される少なくとも一種の繊維である前述の改良された被服要求品質を有する繊維材料に関する。
本発明の他の態様は、酸化チタンを含有した化学繊維と天然繊維とから、これら両繊維が相互に接触する形態で存在するように繊維材料を構成することにより、繊維材料の被服要求品質を改良する方法にも関する。That is, the present invention relates to a fiber material having improved clothing quality, characterized in that it is composed of a chemical fiber and a natural fiber containing titanium oxide, and these two fibers are present in contact with each other.
A preferred embodiment of the present invention relates to a fiber material having improved clothing requirement quality, wherein the fiber material is a yarn made by spinning a chemical fiber containing titanium oxide and a natural fiber.
In the present invention, the fiber material is an improved composite yarn produced by winding a sheath yarn made of natural fiber around the outer surface of a core yarn made of chemical fiber containing titanium oxide. The present invention relates to a fiber material having clothing required quality.
Another aspect of the present invention relates to a fiber material having improved clothing requirement quality, wherein the composite yarn has the sheath yarn wound around the core yarn in a state where the core yarn is not substantially exposed. .
Moreover, the said fiber material is related with the fiber material which has the improved clothing requirement quality which is the twisted thread | yarn produced by mutually twisting the thread | yarn which consists of a chemical fiber and a natural fiber containing titanium oxide.
In the invention, it is also preferable that the fibrous material is a woven fabric or a knitted fabric woven using the above-described yarn, the above-described composite yarn or the above-described twisted yarn in at least a part of the yarn constituting the fabric. The present invention also relates to a fiber material having the required clothing quality.
In a preferred aspect of the present invention, the fiber material is a yarn made of chemical fiber containing titanium oxide, used for warp and / or weft of an intermediate material of a woven fabric, and the intermediate material is made of natural fibers from above and below. The present invention relates to a fiber material having an improved clothing requirement quality, which is a woven fabric made by weaving yarn so as to cover the intermediate material.
In another aspect of the present invention, the fiber material is woven using a fabric woven using a yarn of chemical fiber containing titanium oxide, and a yarn of natural fiber overlapped and bonded on both upper and lower sides thereof. The present invention also relates to a fiber material having an improved garment requirement quality, which is a sandwich structure fabric made up of fabrics.
A preferred embodiment of the present invention relates to a fiber material having the above-mentioned improved clothing requirement quality, wherein the chemical fiber contains 0.01 to 5.0% by weight of titanium oxide based on the total weight of the fiber.
In particular, the present invention relates to a fiber material having the above-mentioned improved clothing requirements, wherein the natural fiber is silk.
In the present invention, the chemical fiber may be polyester fiber, polyamide fiber (nylon fiber), polypropylene fiber, polyethylene fiber, polypromix fiber, polyclar fiber, or other synthetic fiber, viscose fiber, copper ammonia rayon. The present invention relates to a fiber material having the above-mentioned improved clothing requirement quality, which is at least one fiber selected from the group consisting of regenerated fibers such as acetate fibers and semi-synthetic fibers such as acetate fibers.
According to another aspect of the present invention, the fiber material is composed of a chemical fiber containing titanium oxide and a natural fiber so that both the fibers are in contact with each other, thereby improving the required quality of clothing of the fiber material. It also relates to an improved method.

図１は、酸化チタンを含有した化学繊維と天然繊維とから紡いで作られた本発明の糸を示す図である。図２は、酸化チタンを含有した化学繊維からなる芯糸の外表面に、天然繊維からなる鞘糸を巻き付けて作られた本発明の複合糸を示す図である。図３は、酸化チタンを含有した化学繊維からなる糸と天然繊維からなる糸とを互いに撚り合わせて作られた本発明の撚り糸を示す図である。図４は、改良された被服要求品質を有する繊維材料の一態様である本発明の平織りされた織布を示す図である。図５は、酸化チタンを含有した化学繊維からなる糸を織布の中間材の経糸に用い、該中間材にその上方及び下方より絹繊維からなる糸を該中間材を覆い隠すように織り込んで作られた本発明の織布の一態様を示す図である。図６は、酸化チタンを含有する化学繊維の糸を用いて織られた布と、その上側に重ね接結させた、絹繊維の糸を用いて織られた布とからなる布の一態様を示す図である。図７は、酸化チタンを含有する化学繊維の糸を用いて織られた布と、その上下両側に重ね接結させた、絹繊維の糸を用いて織られた布とからなるサンドイッチ構造布の一態様を示す図である。  FIG. 1 is a view showing a yarn of the present invention made by spinning a chemical fiber containing titanium oxide and a natural fiber. FIG. 2 is a view showing a composite yarn of the present invention produced by winding a sheath yarn made of natural fiber around the outer surface of a core yarn made of chemical fiber containing titanium oxide. FIG. 3 is a view showing a twisted yarn of the present invention produced by twisting a yarn made of a chemical fiber containing titanium oxide and a yarn made of a natural fiber together. FIG. 4 is a diagram showing a plain woven fabric according to the present invention which is an embodiment of a fiber material having improved clothing quality requirements. In FIG. 5, a yarn made of chemical fiber containing titanium oxide is used as a warp of an intermediate material of a woven fabric, and a yarn made of silk fiber is woven into the intermediate material so as to cover the intermediate material from above and below. It is a figure which shows the one aspect | mode of the produced woven fabric of this invention. FIG. 6 shows an embodiment of a fabric composed of a fabric woven using a yarn of chemical fiber containing titanium oxide and a fabric woven using a yarn of silk fiber overlapped on the upper side thereof. FIG. FIG. 7 shows a sandwich-structured fabric comprising a fabric woven using chemical fiber yarns containing titanium oxide and a fabric woven using silk fiber yarns that are overlapped on both upper and lower sides. It is a figure which shows one aspect | mode.

本発明における被服要求品質とは、糸等の繊維材料から作られる上着、下着、靴下等の被服類において要求され、それらが保持され得るべき品質、例えば黄変、黄ばみが経時的に生じにくいこと、吸着された悪臭やアレルギーの原因となる有害物質の残留が生じないこと、所要の強度、弾性等の物性を有し、破れが生じにくく、並びに保温性に優れること、伸縮性に富み、体形、体の動きに適合し易いこと、通気性が良いこと等の品質を指す。
天然繊維特有の風合を有し、かつ前述の被服要求品質がより良く改良された本発明の繊維材料を得る為には、酸化チタンを含有した化学繊維と天然繊維を用いることが必要であるが、これら両繊維を相互に接触させる形態となすことで十分である。その一の態様として、図１に示すように、複数本の酸化チタンを含有した化学繊維１及び天然繊維２、好適には絹とを紡いでなる糸３が挙げられる。糸３は、それぞれ長さが異なった化学繊維１と天然繊維２とが全体的にほぼ均一に存在して相互に接触してなる形態をとっている為、経時においても光による黄変や汗による黄ばみが有効に防止され、かつ有毒ガスの付着残留度が少なく、さらに保温性、強度の経時的な低下も有効に防止され、かつ糸３全体としても、天然繊維２特有の風合を有するものとなっている。化学繊維１及び天然繊維２は、構成される糸３の改良された被服要求品質が維持され、そして天然繊維２特有の風合を著しく損なわない範囲内において、それぞれ所望の割合において紡ぐことができる。
本発明の繊維材料のより好ましい態様は、図２に示す、酸化チタンを含有した化学繊維からなる芯糸４の外表面に天然繊維からなる鞘糸５を巻き付けて得られた複合糸６である。複合糸６は、芯糸４が鞘糸５と接触すると共にその該表面が完全に覆われた状態となっている為、改良された被服要求品質を有するだけでなく、その風合も天然繊維からなる鞘糸５のそれに限りなく近いものを有しており、大変好ましい態様である。また、複合糸６は、芯糸４が実質露出しない状態で鞘糸５が芯糸４に巻き付けられていればよく、例えば、複合糸６は、芯糸４が露出しない状態で鞘糸５が巻き付けられている態様であっても、又天然繊維からなる鞘糸５の特有の風合が極端に損なわれない範囲内において、芯糸４が露出した状態で鞘糸５が巻き付けられた態様であっても良い。芯糸が実質露出しない状態とは、芯糸が完全に露出しない状態の他、複合糸の一部分又は複数部分において芯糸が露出されている状態をも包含するものとする。
また、糸である本発明の繊維材料としては、酸化チタンを含有した化学繊維からなる糸と天然繊維からなる糸とを互いに撚り合わせて作られた撚り糸も挙げられる。例えば図３に示すように、酸化チタンを含有したナイロン繊維からなる糸７と絹繊維からなる糸８とが撚り合わされることにより相互に接触し、その為、作られた撚り糸は改良された被服要求品質、並びに使用された天然繊維の風合に近い風合を有するものである。
これら前述した本発明の糸である繊維材料は、酸化チタンを含有した化学繊維と天然繊維とがそれぞれ単一種類、例えば酸化チタンを含有したナイロン繊維と絹の組合せから構成される態様の他、所望により複数種類から構成された態様、例えば酸化チタンを含有したナイロン繊維及びポリエステル繊維と絹の組合せであっても構わない。また、例えば本発明の複合糸又は撚り糸を鞘糸又は芯糸として使用して他の複合糸を作っても、本発明の複合糸又は撚り糸を使用して他の撚り糸を作っても良い。
本発明の改良された被服要求品質を有する繊維材料の他の態様は、布を構成する糸の少なくとも一部において、酸化チタンを含有した化学繊維と天然繊維とから紡いで作られた糸、複合糸又は撚り糸（以下、本明細書においてこれらを酸化チタン含有糸と略す）を使用して織られた織布又はこれら酸化チタン含有糸を使用して編成された編物である。該織布は、一例として図４に示すように、酸化チタン含有糸を経糸１０及び／又は緯糸１１として使用して、互いに一本ずつ上下に交差した平織により得られる（織布１２）。ここで、経糸１０及び緯糸１１は、作られた織布の被服要求品質が改良され、かつ天然繊維の風合が大きく損なわれない範囲内であれば、酸化チタン含有糸の他に、他の種類の糸を使用しても良い。例えば、経糸１０及び緯糸１１全てに酸化チタン含有糸を使用する態様の他、全ての経糸１０に絹糸を使用し、全ての緯糸１１に酸化チタン含有糸（撚り糸）を使用する態様、或いは全ての経糸１０の内酸化チタン含有糸を適当な割合で使用し、その他の残りの経糸１０には絹糸を使用し、かつ、全ての緯糸１１には絹糸、酸化チタン含有糸、又は絹糸と酸化チタン含有糸の双方を使用する態様等が挙げられる。本発明の織布は織り方は任意であり、平織の他、斜文織、繻子織、紋織、搦み織、重ね織又は添毛織等によっても得ることもできる。
また、本発明の織布においてより好ましい態様は、酸化チタンを含有した化学繊維からなる糸を織布の中間材の経糸及び／又は緯糸に用い、該中間材にその上方及び下方より天然繊維からなる糸を該中間材を覆い隠すように織り込んで作られた織布である。例えば図５に示すような織布１３は、酸化チタンを含有した化学繊維からなる糸１４を中間材の経糸とし、天然繊維（絹繊維）からなる糸１５及び１５’にて上下から中間材の経糸１４を覆い隠すように接触して作られてなる。したがって、織布１３は改良された被服要求品質を有しつつ、その上に肌触り、見た目等の風合も天然繊維単一で織られた織布のそれと同等であり、特に下着類、靴下等の肌に直接に接触する製品の材料としては好適である。また、天然繊維からなる糸１５及び１５’は同一種類であっても、又は異なった種類であってももちろん差し支えない。
また本発明の改良された被服要求品質を有する編物は、その編み方は任意であり、例えば手編又は機械編により、平編（メリヤス編、天竺編）、ゴム編（畦編）、パール編（ガータ編）、タック編、浮編、片畦編、両面編、レース編、添毛編、デンビー編（トリコット編）、バンダイク（アトラス）編、プレンコード編、二目編、ペレリン編、二重デンビー編、二重バンダイク編、ミラニーズ編、ラッシェル編、裏毛編又はジャカード編等により得られる。
本発明の改良された被服要求品質を有する繊維材料の他の態様としては、図６に示す、酸化チタンを含有する化学繊維の糸を用いて織られた布１６と、その上側に重ね接結させた、絹繊維の糸を用いて織られた布１７とからなる布１８が挙げられる。布１８は、布１６の上下どちらかの側においてのみ布１７が絹糸１９により縦横に縫い付けられて（図中の破線）接結されている態様である。
本発明の繊維材料の別の好ましい態様としては、図７に示す、酸化チタンを含有する化学繊維の糸を用いて織られた布２０と、その上下両側に重ね接結させた、絹繊維の糸を用いて織られた布２１とからなるサンドイッチ構造布２２が挙げられる。構造布２２は、布２０が布２１及び２１とによりサンドイッチ状に挟まれる形態で布２１及び２１が布２０と接触している為に、サンドイッチ構造布２２全体としてみれば、改良された被服要求品質を有するのみならず、肌触り、見た目等の風合は布２１のそれと同等である。図７においては、布２０、２１は絹糸１９により縦横に縫い付けられて（図中の破線）接結されているが、むろん、絹以外の糸を使用しても良いし、或いは他の接結手段を適宜選択しても良い。
本発明に使用され、繊維材料の被服要求品質を改良し得る酸化チタンの形態は粉末形態が望ましく、その平均粒径は０．５μｍ以下であることが好ましい。粒径が０．５μｍを超えると、該酸化チタンが含有された化学繊維からなる糸が切れ易くなる。また酸化チタンは、繊維全重量に基づき、一般に０．０１ないし５．０重量％の量で該化学繊維に含有される。０．０１重量％より少ないと、構成される繊維材料の被服要求品質が効果的に改良されない。５．０重量％を超えると繊維材料の被服要求品質がそれ以上向上せず、その上、化学繊維の紡糸工程や延伸工程での糸切れが発生しやすくなり、また紡糸機、編機又は織機のローラーやガイド等に摩擦損傷を与えるおそれも高まる為に好ましいとは言い難い。酸化チタンの含有量は、繊維材料の被服要求品質の改良の効果の向上と、前述した糸切れの防止とのバランスを考慮すると、繊維全重量に基づいて０．１ないし１．０重量％が好ましい。かかる酸化チタンが含有された化学繊維は、適宜湿式紡糸、乾式紡糸又は溶融紡糸することによって、例えばその原料となるポリマーを溶融し、そしてこれに酸化チタンを直接混合し、その後に紡糸することによって製造することができる。
本発明において好適に用いられる天然繊維は、例えば絹、綿、獣毛（羊毛、カシミヤ、ビキューナ、アルパカ、アンゴラ、モヘヤ、キャメル等）、麻、紙、が挙げられ、化学繊維としては、例えばポリエステル系繊維、ポリアミド系繊維（ナイロン繊維）、ポリプロピレン系繊維、ポリエチレン系繊維、ポリプロミックス系繊維、ポリクラール系繊維等の合成繊維、ビスコース繊維、銅アンモニアレーヨン等の再生繊維及びアセテート繊維等の半合成繊維等が挙げられる。
以上説明したように、本発明の改良された被服要求品質を有する繊維材料は、酸化チタンを含有した化学繊維と天然繊維からなるものであり、例えば糸又は該糸を材料とした編物及び織物が挙げられる。これら繊維材料は、天然繊維が用いられているにもかかわらず、その天然繊維が酸化チタンを含有する化学繊維と常に接触する形態にあることから、経時においても光による黄変や汗による黄ばみが有効に防止され得る。また、長期にわたって有毒ガスの徐放性も優れ、本発明の繊維材料から作られた被服に対して、例えば悪臭を発するガスや人体に有害なガスが吸着されても、それらガスが存在しない環境においては、吸着したガスが非常に高い割合で徐放される。その為、悪臭やハウスシック症の原因となる有害ガスが常に被服に吸着する状態を有効に回避することができる。さらに、本発明の繊維材料からなる生地は、長期間の使用後においても絹繊維のみから構成される生地と比較してより保温性に優れている他、強度においてもより持続性に優れている為、従来品より薄手で軽量であっても保温性及び強度が変わらない被服を製造することも出来る。また、本発明の繊維材料は、見た目、肌触り等の風合も天然繊維単一からなる繊維材料に極めて近い特性を有している。のみならず、生産面においても、酸化チタンが安価で入手しやすい上に、酸化チタンの化学繊維への含有も容易になし得るので、該繊維材料の生産コストも抑えられ、生産性の面でも有利であるという利点をも有している。
以下、本発明を試験例により更に具体的に説明するが、これによって本発明が限定されるものではない。
（試験例１）黄変及び黄ばみ試験
本発明の繊維材料である織布の、光又は汗による黄変及び黄ばみの度合いを、天然繊維のみからなる織布の光又は汗による黄変及び黄ばみの度合いと比較検討した。
試料Ａ：１００重量％の溶融したナイロン−６ポリマーに１．０重量％の酸化チタン（平均粒経０．１μｍ）を加えて均一となるまで混合した後、この溶融液を紡糸機を通して紡糸し、酸化チタンを含有した糸を得た。そして、この酸化チタンを含有した糸を芯糸とし、鞘糸として絹糸を巻き付けて得た複合糸を用いて平織りにし、本発明の織布である試料Ａを得た。
試料Ｂ：実施例１と同様の方法で得た酸化チタンを含有した糸を図４に示す経糸１０に用い、実施例１で使用した同様の絹糸を図４に示す緯糸１１に用いて平織りすることにより、図４に示す本発明の織布である試料Ｂを得た。
試料Ｃ：鞘糸として羊毛からなる毛糸を使用した以外は実施例１と同様の操作を行い、本発明の織布である試料Ｃを得た。
試料Ｄ：鞘糸として木綿からなる綿糸を使用した以外は実施例１と同様の操作を行い、本発明の織布である試料Ｄを得た。
試料Ｅ：実施例１で使用した同様の絹糸を平織にして、織布である試料Ｅを得た。
試料Ｆ：１００重量％の溶融したナイロン−６ポリマーに０．００５重量％の酸化チタン（平均粒経０．１μｍ）を加えて均一となるまで混合した後、この溶融液を紡糸機を通して紡糸し、酸化チタンを含有した糸を得た。そして、この酸化チタンを含有した糸を芯糸とし、鞘糸として絹糸を巻き付けて得た複合糸を用いて平織りにし、織布である試料Ｆを得た。
比較例：１００重量％の溶融したナイロン−６ポリマーに８．０重量％の酸化チタン（平均粒経０．１μｍ）を加えて均一となるまで混合した後、この溶融液を紡糸機を通して紡糸した。しかしながら、該紡糸工程そして続く延伸工程において糸切れが多発し、所望の太さの糸を入手することが困難となった為に中止した。
これら得られた試料Ａ、Ｂ、Ｃ、Ｄ、Ｅ及びＦについて、染色堅ろう度試験を行った。なお、以下に示すとおり耐光性試験はＪＩＳ Ｌ０８４２（カーボンアーク灯光試験）にしたがって行い、耐汗性試験（酸及びアルカリ）はＪＩＳ Ｌ０８４８にしたがって行った。
ＪＩＳ Ｌ０８４２（カーボンアーク灯光試験）の方法
試料Ａ、Ｂ、Ｃ、Ｄ、Ｅ又はＦ及びブルースケールをそれぞれ厚紙に挟んで、カーボンアーク灯形耐光試験機の試料ホルダに取り付けた。次に、該試験片ホルダを試験片回転架に隙間がないように取り付け、そしてＪＩＳ Ｌ ０８４１の６．（１）（第１露光法）にしたがって露光を行った。その判定は、ＪＩＳ Ｌ ０８０１の９．（染色堅ろう度の判定）にしたがって行った。
ＪＩＳ Ｌ０８４８（耐汗性試験）の方法
試料Ａ、Ｂ、Ｃ、Ｄ、Ｅ又はＦをそれぞれ１００×４０ｍｍの大きさの試料片に裁断し、これと同じ大きさの、ＪＩＳ Ｌ０８０３に規定する添付白布２枚の間に挟み、２辺をそれぞれ縫い合わせて複合試験片を各々作成した。次に、酸性人工汗液及びアルカリ性人工汗液をそれぞれ入れた２個のビーカー中に、それぞれの複合試験片を押し付け、動かして試験液を十分均一に浸透させた。そして試験液を流し出し、複合試験片を２本のガラス棒の間に挟んで余分の試験液がしたたり落ちない程度にまでしごき取った。複合試験片をガラス板２枚の間に挟み、汗試験機に取り付けて１２．５ｋＰａの圧力をかけた。続いて、垂直位置に複合試験片を取り付けた汗試験機を、３７±２℃の乾燥機中に入れて４時間保持した。その後、汗試験機から複合試験片を取り離し、試験片と添付白布２枚を切り離して６０℃以下で乾燥した。試験片の変退色の判定は、ＪＩＳ Ｌ ０８０１の９．（染色堅ろう度の判定）にしたがって行った。結果を表１に示す。

Figure 2004088016
表１の結果から分かるように、試料Ｅ及び試料Ｆはそれぞれ、耐光性試験、耐汗性試験共に２−３級及び３級にとどまったのに対し、本発明の織布である試料Ａ、Ｂ、Ｃ及びＤはいずれも４級以上の良好な結果が得られた。すなわち、本発明に規定される量の酸化チタンを含有したナイロン糸と絹糸、毛糸又は綿糸とからなる試料Ａ、Ｂ、Ｃ及びＤは、光の影響による黄変や汗の影響による黄ばみが非常に有効に抑制されたものであると理解される。なおかつ、試料Ａ、Ｂ、Ｃ及びＤは、化学繊維であるナイロン糸をも用いているにもかかわらず、見た目、肌触り等の風合が絹糸、羊毛糸又は木綿糸単一の布と同等であった。
（試験例２）有害ガスの吸着性及び徐放性試験
本発明の繊維材料である生地の有毒ガスの吸着・残留特性の経時的変化を、絹繊維のみからなる生地のそれと比較検討した。
試験試料
試料ａ：絹からなる糸を全体の７０％及び酸化チタン含有ナイロン繊維からなる糸を全体の３０％用いて丸編した本発明の繊維材料である生地を、１年の間、着用、洗濯を繰り返して使用した生地。
試料ｂ：絹からなる糸を１００％用いて丸編した未使用の生地。
試料ｃ：生地ｂを１年の間、着用、洗濯を繰り返して使用した生地。
試験方法
有毒ガス吸着性試験：試料ａ、ｂ又はｃに有毒ガスを吸着させ、その吸着した量を測定する為、試料ａ、ｂ又はｃを各々の合成樹脂製パック中に入れ、そして各パックを既知のコントロール濃度の有毒ガスとしてホルムアルデヒド、イソ吉草酸又はアンモニアで満たし、そして３時間経過後の各パック中のそれぞれのガス濃度を検知管を用いて測定した。そして既知のコントロール濃度からパック中に残存するガス濃度を差し引いて得た値を、各々の試料に対して吸着した有毒ガス濃度とした。結果を表２に示す。なお、吸着率は、各種有毒ガスのコントロール濃度に対する各試料に吸着した各種有毒ガス濃度の割合を指す。
有毒ガス徐放性試験：上記の有毒ガス吸着性試験において有毒ガスが吸着された試料ａ、ｂ及びｃを、ホルムアルデヒド、イソ吉草酸及びアンモニアが含有されない空気が封入されたテトラーパック（容量５リットル）中に移して、３時間後の該パック中のホルムアルデヒド、イソ吉草酸及びアンモニア濃度を検知管を用いてそれぞれ測定した。結果を表３に示す。なお、徐放率は、表２において記載される各種有毒ガスの吸着量に対する放出量の割合を指す。
Figure 2004088016
Figure 2004088016
表２及び３の結果より、絹繊維のみからなる生地ｂの有毒ガス徐放率を、該生地を１年使用した状態の生地である試料ｃの徐放率と比較すると、その数値が極端に低下しているが、これに対し、１年間使用された本発明の繊維材料である試料ａは、有毒ガスの吸着率こそ決して低くはないが、同様に１年間使用された試料ｃと比較して、表２及び３に記載される３種の有毒ガスに対して非常に高い有毒ガス徐放率を保っている。このことから、本発明の繊維材料である生地ａは、１年使用された後においても、有毒ガスは吸着されるものの、該ガスが存在しない環境においては、吸着されたガスは生地ａから容易に放出され得ることが分かる。すなわち、本発明の繊維材料である生地から作られた被服は、トイレ等において悪臭の原因であるアンモニア臭が吸着したとしても、トイレ外の環境においては該アンモニアは簡単にすぐに該被服から消え去る効果が、被服をたとえ１年使用した場合においても有効に持続され得、もってアンモニアの悪臭が被服への悪臭残存防止効果もまた長期にわたって有効に持続されることを示している。またホルムアルデヒドの高い徐放率から、近年において問題となっているハウスシック症防止において有効な被服の材料となり得ると言える。さらに、イソ吉草酸の高い徐放率からも、汗による不快臭の染み付きが有効に回避され得ることが見て取れる。かように高い有毒ガス徐放率を長期にわたって維持し得る本発明の繊維材料は、衣服の材料として好適な材料であると言うことが出来る。
（試験例３）保温率測定試験
本発明の繊維材料である生地の保温性の経時的変化を、絹繊維のみからなる生地のそれと比較検討した。
試験試料
試料ａ：絹からなる糸を全体の６０％及び酸化チタン含有ナイロン繊維からなる糸を全体の４０％用いて丸編した本発明の繊維材料である生地を１年の間、着用、洗濯を繰り返して使用した生地。
試料ｂ：絹からなる糸を１００％用いて丸編した生地。
試験方法
得られた試験試料ａ及びｂの保温率を、ＪＩＳ Ｌ １０１８Ａ法（恒温法）にしたがって測定した。
試料ａ及びｂのそれぞれ異なる２箇所から試験片３０ｃｍ×３０ｃｍを採取し、保温性試験機を用い、試験片を恒温発熱体に取り付け、低温度の外気に向かって流れ出す熱量が一定となり、発熱体の表面温度が一定値を示すようになってから２時間後に試験片を透過して放散される熱損失を求め、これと試験片のない裸状のままで同様の温度差及び時間に放散される熱損失との比から、保温率（％）を求めた。なお、測定は２回行い、その平均値を算出して結果とした。結果を表４に示す。
Figure 2004088016
本試験前においては、生地ａは保温性の点で絹繊維より劣るナイロン繊維も使用されている為に、絹繊維のみからなる生地ｂよりも保温率が劣ると推測されたが、驚くべきことに、表４から、１年にわたって使用されたにもかかわらず、生地ａの保温率の方が生地ｂのそれと比較して極めて高い結果が得られた。この結果から、生地ａは、未使用の時点で高い保温性を有し、そして１年使用後においても絹繊維のみからなる生地ｂよりも高い保温性が持続されているものと推測され得る。かように、絹のみからなる生地と比較してより高い保温性を長期にわたって維持し得る本発明の生地である繊維材料は、たとえより肉薄で軽量の被服を構成したとしても、絹のみからなる生地と同等の保温性を維持することも可能であるので、被服の材料としてなお一層好適な材料であると言うことが出来る。
（試験例４）破断強度及び破断伸度の測定
本発明の繊維材料である生地の破断強度及び破断伸度の経時変化を、絹繊維のみからなる生地のそれらと比較検討した。
試験試料
試料ａ：絹からなる糸を全体の７０％及び酸化チタン含有ナイロン繊維からなる糸を全体の３０％用いて丸編した本発明の繊維材料である未使用の生地。
試料ｂ：生地ａを１年の間、着用、洗濯を繰り返して使用したもの。
試料ｃ：絹からなる糸を１００％用いて丸編した未使用の生地。
試料ｄ：生地ｃを１年の間、着用、洗濯を繰り返して使用したもの。
試験方法
得られた試験試料ａ、ｂ、ｃ及びｄについてそれぞれ、破断強度及び破断伸度の測定試験を行った。なお、該試験は農林水産消費技術センターに依頼して、テンシロン２型材料試験機を用い、試長１０ｃｍ、Ｈ．Ｓ４０ｍｍ／分、Ｃ．Ｓ１００ｍｍ／分の条件において行われた。その結果を表５に示す。
Figure 2004088016
表５より、本発明の生地からなる試料の場合は、未使用（試料ａ）から１年使用後（試料ｂ）に至っても、破断強度が３．４６ｇ／ｄから２．４７ｇ／ｄ及び破断伸度が１４．３％から１０．８％までの低下にとどまり、経時による性能低下が効果的に抑制される結果を示している。これに対し、絹１００％の生地からなる試料の場合は、未使用（試料ｃ）から１年使用後（試料ｄ）に至った時、破断強度が３．２５４ｇ／ｄから０．４９３ｇ／ｄ及び破断伸度が１５．１％から３．２％まで大きく低下した結果を示している。すなわち、かように、破断強度及び破断伸度を長期にわたって維持し得る本発明の繊維材料である生地からなる被服は、肉薄であっても、絹繊維のみからなる生地と同等の強度を有し得るので、軽量の被服の材料としてより一層適したものである。The clothing requirement quality in the present invention is required for clothing such as outerwear, underwear, and socks made from a fiber material such as yarn, and the quality that these can be held, for example, yellowing and yellowing are less likely to occur over time. In addition, there is no residue of harmful substances that cause adsorbed malodors and allergies, physical properties such as required strength and elasticity, resistance to tearing, and excellent heat retention, rich elasticity, It refers to quality such as body shape, ease of adapting to body movement, and good ventilation.
In order to obtain the fiber material of the present invention having a texture unique to natural fibers and improved in the above-mentioned clothing requirement quality, it is necessary to use chemical fibers and natural fibers containing titanium oxide. However, it is sufficient that these two fibers are brought into contact with each other. As one aspect thereof, as shown in FIG. 1, there is a yarn 3 formed by spinning a chemical fiber 1 and a natural fiber 2, preferably silk, containing a plurality of titanium oxides. The yarn 3 has a form in which the chemical fibers 1 and the natural fibers 2 having different lengths are almost uniformly present and are in contact with each other. Is effectively prevented from yellowing, and has a low residual residue of toxic gas. Further, it is possible to effectively prevent a decrease in heat retention and strength over time, and the yarn 3 as a whole has a unique texture. It has become a thing. The chemical fiber 1 and the natural fiber 2 can be spun at a desired ratio within the range in which the improved clothing requirement quality of the yarn 3 is maintained and the texture unique to the natural fiber 2 is not significantly impaired. .
A more preferred embodiment of the fiber material of the present invention is a composite yarn 6 obtained by winding a sheath yarn 5 made of natural fiber around the outer surface of a core yarn 4 made of chemical fiber containing titanium oxide, as shown in FIG. . The composite yarn 6 is in a state where the core yarn 4 is in contact with the sheath yarn 5 and the surface thereof is completely covered. Therefore, the composite yarn 6 not only has improved clothing quality requirements but also has a natural texture. This is a very preferable embodiment. Further, the composite yarn 6 may be formed by winding the sheath yarn 5 around the core yarn 4 in a state where the core yarn 4 is not substantially exposed. For example, the composite yarn 6 is formed by the sheath yarn 5 in a state where the core yarn 4 is not exposed. Even in the wound mode, the sheath yarn 5 is wound in a state where the core yarn 4 is exposed as long as the specific texture of the sheath yarn 5 made of natural fibers is not significantly impaired. There may be. The state in which the core yarn is not substantially exposed includes not only the state in which the core yarn is not completely exposed but also the state in which the core yarn is exposed in a part or a plurality of portions of the composite yarn.
In addition, examples of the fiber material of the present invention that is a yarn include a twisted yarn made by twisting a yarn made of a chemical fiber containing titanium oxide and a yarn made of a natural fiber together. For example, as shown in FIG. 3, the yarn 7 made of nylon fiber containing titanium oxide and the yarn 8 made of silk fiber are in contact with each other by being twisted together, so that the produced twisted yarn is improved in clothing. It has the required quality as well as the texture of the natural fibers used.
The fiber material that is the thread of the present invention described above is a mode in which the chemical fiber and the natural fiber containing titanium oxide are each composed of a single type, for example, a combination of nylon fiber containing titanium oxide and silk, If desired, it may be composed of a plurality of types, for example, nylon fibers containing titanium oxide, a combination of polyester fibers and silk. Further, for example, the composite yarn or the twisted yarn of the present invention may be used as a sheath yarn or a core yarn to make another composite yarn, or the composite yarn or the twisted yarn of the present invention may be used to make another twisted yarn.
According to another aspect of the present invention, there is provided a fiber material having improved clothing requirement quality, in which at least a part of the yarn constituting the cloth is a yarn or composite made by spinning a chemical fiber containing titanium oxide and a natural fiber. A woven fabric woven using yarns or twisted yarns (hereinafter abbreviated as titanium oxide-containing yarns in the present specification) or a knitted fabric knitted using these titanium oxide-containing yarns. As an example, as shown in FIG. 4, the woven fabric is obtained by plain weaving that crosses one by one up and down using a titanium oxide-containing yarn as warp yarn 10 and / or weft yarn 11 (woven fabric 12). Here, the warp yarn 10 and the weft yarn 11 are not limited to titanium oxide-containing yarns, as long as the required quality of the woven fabric produced is improved and the texture of the natural fibers is not significantly impaired. Different types of yarn may be used. For example, in addition to an embodiment in which titanium oxide-containing yarns are used for all the warp yarns 10 and weft yarns 11, silk yarn is used for all the warp yarns 10 and titanium oxide-containing yarns (twisted yarns) are used for all the weft yarns 11 The warp yarn 10 contains an internal titanium oxide-containing yarn at an appropriate ratio, the remaining warp yarn 10 uses silk yarn, and all the weft yarns 11 contain silk yarn, titanium oxide-containing yarn, or silk yarn and titanium oxide-containing yarn. Examples include using both yarns. The woven fabric of the present invention can be woven in any manner, and can be obtained by plain weave, oblique weave, satin weave, crest weave, kneaded weave, layered weave or additive weave.
In a more preferred embodiment of the woven fabric of the present invention, a yarn made of a chemical fiber containing titanium oxide is used as a warp and / or weft of an intermediate material of the woven fabric, and the intermediate material is made from natural fibers from above and below. Is a woven fabric made by weaving the yarn so as to cover the intermediate material. For example, in the woven fabric 13 as shown in FIG. 5, a yarn 14 made of a chemical fiber containing titanium oxide is used as a warp of an intermediate material, and yarns 15 and 15 'made of natural fiber (silk fiber) are used as intermediate materials from above and below. It is made in contact with the warp 14 so as to cover it. Therefore, the woven fabric 13 has an improved quality required for clothing, and the texture on the touch and the appearance of the woven fabric 13 is equivalent to that of a woven fabric woven with a single natural fiber, particularly underwear and socks. It is suitable as a material for products that come into direct contact with the skin. Of course, the yarns 15 and 15 'made of natural fibers may be the same type or different types.
Further, the knitted fabric having the improved quality required for clothing according to the present invention can be knitted in any manner, for example, by hand knitting or machine knitting, flat knitting (knitted knitting, tengu knitting), rubber knitting (knitting knitting), pearl knitting. (Gata), Tuck, Float, One-sided, Double-sided, Lace, Added hair, Denby (Tricot), Bandaik (Atlas), Plencord, Second stitch, Perelin, Second It is obtained by heavy denby knitting, double bandai knitting, miranese knitting, raschel knitting, fleece knitting or jacquard knitting.
As another embodiment of the fiber material having improved clothing quality of the present invention, as shown in FIG. 6, a cloth 16 woven using chemical fiber yarns containing titanium oxide and a lap joint on the upper side thereof are shown. And a cloth 18 composed of the cloth 17 woven with silk fiber threads. The cloth 18 is a mode in which the cloth 17 is sewn vertically and horizontally with a silk thread 19 (dashed line in the drawing) only on either the upper or lower side of the cloth 16.
As another preferred embodiment of the fiber material of the present invention, as shown in FIG. 7, a fabric 20 woven using a chemical fiber yarn containing titanium oxide and a silk fiber which is lap-bonded on both upper and lower sides thereof are used. A sandwich structure fabric 22 composed of a fabric 21 woven with yarn is used. Since the fabric 21 is in contact with the fabric 20 in a form in which the fabric 20 is sandwiched between the fabrics 21 and 21, the structure fabric 22 has improved clothing requirements when viewed as the sandwich fabric 22 as a whole. Not only has the quality, but the texture such as touch and appearance is the same as that of the cloth 21. In FIG. 7, the fabrics 20 and 21 are sewn vertically and laterally by the silk thread 19 (broken lines in the figure), but of course, other threads may be used, or other contact may be used. You may select a binding means suitably.
The form of titanium oxide that can be used in the present invention and can improve the required quality of clothing of the fiber material is preferably a powder form, and the average particle diameter is preferably 0.5 μm or less. When the particle diameter exceeds 0.5 μm, the yarn made of the chemical fiber containing the titanium oxide is easily cut. Titanium oxide is generally contained in the chemical fiber in an amount of 0.01 to 5.0% by weight based on the total weight of the fiber. If it is less than 0.01% by weight, the required clothing quality of the constructed fiber material is not effectively improved. If it exceeds 5.0% by weight, the required quality of clothing of the fiber material will not be further improved, and further, yarn breakage will likely occur in the spinning process and drawing process of chemical fibers, and the spinning machine, knitting machine or loom It is difficult to say that it is preferable because it may increase the risk of frictional damage to the rollers and guides. The content of titanium oxide is 0.1 to 1.0% by weight based on the total weight of the fiber, taking into account the balance between the improvement in the required quality of clothing of the fiber material and the prevention of thread breakage described above. preferable. Such a titanium oxide-containing chemical fiber is appropriately wet-spun, dry-spun or melt-spun, for example, by melting a polymer as a raw material, and directly mixing titanium oxide with this, followed by spinning. Can be manufactured.
Examples of natural fibers that are preferably used in the present invention include silk, cotton, animal hair (wool, cashmere, vicuuna, alpaca, angora, mohair, camel, etc.), hemp, and paper. Examples of chemical fibers include polyester. Fiber, polyamide fiber (nylon fiber), polypropylene fiber, polyethylene fiber, polypromix fiber, synthetic fiber such as polyclar fiber, viscose fiber, recycled fiber such as copper ammonia rayon, and semi-synthetic fiber such as acetate fiber Examples thereof include fibers.
As described above, the fiber material having improved clothing requirement quality according to the present invention is composed of a chemical fiber and a natural fiber containing titanium oxide. For example, a yarn or a knitted fabric and a woven fabric using the yarn as a material are used. Can be mentioned. Even though natural fibers are used, these fiber materials are always in contact with the chemical fibers containing titanium oxide, so that yellowing due to light and yellowing due to sweat are also observed over time. It can be effectively prevented. In addition, the sustained release of toxic gases is excellent over a long period of time, and even when clothes that are made of the fiber material of the present invention, for example, gases that generate odors or gases harmful to the human body are adsorbed, these gases do not exist. In, the adsorbed gas is released at a very high rate. For this reason, it is possible to effectively avoid a state in which harmful gases that cause malodor and house sickness are always adsorbed on clothes. In addition, the fabric made of the fiber material of the present invention is superior in heat retention compared to a fabric composed only of silk fibers even after long-term use, and is more durable in strength. Therefore, it is also possible to manufacture clothing that is thinner and lighter than conventional products and that does not change in heat retention and strength. In addition, the fiber material of the present invention has properties such as appearance and feel that are very close to those of a fiber material composed of a single natural fiber. Not only in terms of production, but also because titanium oxide is inexpensive and readily available, and titanium oxide can be easily contained in chemical fibers, the production cost of the fiber material can be reduced, and productivity is also reduced. It also has the advantage of being advantageous.
Hereinafter, the present invention will be described more specifically with reference to test examples, but the present invention is not limited thereto.
(Test Example 1) Yellowing and yellowing test The degree of yellowing and yellowing due to light or sweat of the woven fabric that is the fiber material of the present invention is determined by the degree of yellowing and yellowing due to light or sweat of the woven fabric consisting only of natural fibers. It was compared with the degree.
Sample A: After adding 1.0% by weight of titanium oxide (average particle size of 0.1 μm) to 100% by weight of melted nylon-6 polymer and mixing it uniformly, the melt was spun through a spinning machine. A yarn containing titanium oxide was obtained. Then, this yarn containing titanium oxide was used as a core yarn, and a plain yarn was used using a composite yarn obtained by winding a silk yarn as a sheath yarn to obtain Sample A which is a woven fabric of the present invention.
Sample B: Plain weaving using titanium oxide-containing yarn obtained by the same method as in Example 1 for warp yarn 10 shown in FIG. 4, and using the same silk yarn used in Example 1 for weft yarn 11 shown in FIG. Thus, a sample B which is the woven fabric of the present invention shown in FIG. 4 was obtained.
Sample C: Sample C which is a woven fabric of the present invention was obtained in the same manner as in Example 1 except that wool yarn made of wool was used as the sheath yarn.
Sample D: A sample D which is a woven fabric of the present invention was obtained by performing the same operation as in Example 1 except that cotton yarn made of cotton was used as the sheath yarn.
Sample E: The same silk thread used in Example 1 was made into a plain weave to obtain Sample E as a woven fabric.
Sample F: After adding 0.005% by weight of titanium oxide (average particle size of 0.1 μm) to 100% by weight of melted nylon-6 polymer and mixing until uniform, the melt is spun through a spinning machine. A yarn containing titanium oxide was obtained. Then, this yarn containing titanium oxide was used as a core yarn, and a composite yarn obtained by winding a silk yarn as a sheath yarn was used for plain weaving to obtain Sample F as a woven fabric.
Comparative Example: 8.0 wt% titanium oxide (average particle size 0.1 μm) was added to 100 wt% melted nylon-6 polymer and mixed until uniform, and then the melt was spun through a spinning machine. . However, yarn breakage occurred frequently in the spinning step and the subsequent drawing step, and it was difficult to obtain a yarn having a desired thickness.
These samples A, B, C, D, E, and F were subjected to a dye fastness test. In addition, as shown below, the light resistance test was performed according to JIS L0842 (carbon arc lamp light test), and the sweat resistance test (acid and alkali) was performed according to JIS L0848.
Method of JIS L0842 (Carbon arc lamp test) Samples A, B, C, D, E or F and a blue scale were sandwiched between cardboards and attached to a sample holder of a carbon arc lamp light resistance tester. Next, the test specimen holder is attached so that there is no gap in the test specimen rotating rack, and JIS L 0841 6. (1) Exposure was performed according to (first exposure method). The judgment is made according to JIS L 0801, 9. (Determination of fastness to dyeing)
Method of JIS L0848 (Sweat resistance test) Sample A, B, C, D, E or F is cut into 100 x 40 mm sample pieces, and attached in accordance with JIS L0803. Composite test pieces were prepared by sandwiching between two white cloths and sewing the two sides together. Next, each composite test piece was pressed into two beakers each containing an acidic artificial sweat solution and an alkaline artificial sweat solution, and moved to allow the test solution to penetrate sufficiently uniformly. Then, the test solution was poured out, and the composite test piece was sandwiched between two glass rods and scraped to such an extent that excess test solution was not dripped or dropped. The composite test piece was sandwiched between two glass plates, attached to a sweat tester, and a pressure of 12.5 kPa was applied. Subsequently, the sweat tester with the composite test piece attached to the vertical position was placed in a dryer at 37 ± 2 ° C. and held for 4 hours. Thereafter, the composite test piece was removed from the sweat test machine, and the test piece and two attached white cloths were separated and dried at 60 ° C. or lower. Judgment of discoloration of the test piece is based on JIS L 0801, 9. (Determination of fastness to dyeing) The results are shown in Table 1.
Figure 2004088016
As can be seen from the results in Table 1, the sample E and the sample F were both in the light resistance test and the sweat resistance test in the grades 2-3 and 3, whereas the sample A, which is the woven fabric of the present invention, As for B, C and D, good results of grade 4 or higher were obtained. That is, samples A, B, C, and D comprising nylon yarn and silk yarn, wool yarn, or cotton yarn containing the amount of titanium oxide defined in the present invention have very yellowing due to the influence of light and yellowing due to the influence of sweat. It is understood that it was effectively suppressed. In addition, samples A, B, C, and D are similar in appearance and texture to a single cloth such as silk, wool, or cotton, despite using nylon yarn that is a chemical fiber. there were.
Test Example 2 Adsorption and Sustained Release Test of Toxic Gas The time-dependent change in the adsorption / residual characteristics of the toxic gas of the fabric, which is the fiber material of the present invention, was compared with that of the fabric consisting only of silk fibers.
Test sample sample a: worn for 1 year with a fabric which is a fiber material of the present invention circularly knitted using 70% of the yarn made of silk and 30% of the yarn made of titanium oxide-containing nylon fiber, Fabric used after repeated washing.
Sample b: An unused fabric circularly knitted with 100% silk thread.
Sample c: A fabric obtained by repeatedly wearing and washing fabric b for one year.
Test method Toxic gas adsorption test: To adsorb toxic gas to sample a, b or c, and to measure the adsorbed amount, sample a, b or c is put in each synthetic resin pack, and each pack Was filled with formaldehyde, isovaleric acid or ammonia as a toxic gas of known control concentration, and the concentration of each gas in each pack after 3 hours was measured using a detector tube. The value obtained by subtracting the gas concentration remaining in the pack from the known control concentration was defined as the concentration of the toxic gas adsorbed to each sample. The results are shown in Table 2. The adsorption rate refers to the ratio of various toxic gas concentrations adsorbed on each sample to the control concentration of various toxic gases.
Toxic gas sustained release test: Samples a, b and c adsorbed with toxic gas in the toxic gas adsorption test described above were filled with air containing no formaldehyde, isovaleric acid and ammonia (capacity 5 liters). The concentration of formaldehyde, isovaleric acid and ammonia in the pack after 3 hours was measured using a detector tube. The results are shown in Table 3. The sustained release rate refers to the ratio of the release amount to the adsorption amount of various toxic gases described in Table 2.
Figure 2004088016
Figure 2004088016
From the results in Tables 2 and 3, when comparing the toxic gas sustained release rate of the fabric b consisting only of silk fibers with the sustained release rate of the sample c which is a fabric in a state where the fabric is used for one year, the numerical value is extremely high. In contrast, although the sample a which is the fiber material of the present invention used for one year is not necessarily low in the adsorption rate of the toxic gas, it is similarly compared with the sample c used for one year. Thus, a very high toxic gas sustained release rate is maintained for the three toxic gases described in Tables 2 and 3. From this, the fabric a which is the fiber material of the present invention can absorb the toxic gas even after it has been used for one year. However, in the environment where the gas does not exist, the adsorbed gas can be easily removed from the fabric a. It can be seen that In other words, even if the clothing made from the fabric material of the present invention absorbs the ammonia odor that causes odor in the toilet or the like, the ammonia easily and immediately disappears from the clothing in the environment outside the toilet. The effect can be effectively maintained even when the clothes are used for one year, and therefore, the malodor of ammonia shows that the effect of preventing the residual offensive odors on the clothes is also effectively maintained for a long time. Moreover, it can be said that the high sustained release rate of formaldehyde can be a material for clothing effective in preventing house sickness which has been a problem in recent years. Furthermore, it can be seen from the high sustained release rate of isovaleric acid that staining of unpleasant odor due to sweat can be effectively avoided. The fiber material of the present invention that can maintain such a high toxic gas sustained release rate over a long period can be said to be a material suitable as a material for clothes.
(Test Example 3) Heat retention rate measurement test The time-dependent change in the heat retention property of the fabric that is the fiber material of the present invention was compared with that of the fabric made of silk fibers alone.
Test sample Sample a: Wearing and washing for 1 year the fabric, which is a textile material of the present invention, circularly knitted using 60% of the yarn made of silk and 40% of the yarn made of titanium oxide-containing nylon fiber for one year The fabric used repeatedly.
Sample b: A fabric knitted circularly using 100% silk thread.
Test Method The heat retention rates of the obtained test samples a and b were measured according to the JIS L 1018A method (constant temperature method).
Samples 30cm x 30cm are collected from two different locations of samples a and b, and using a heat insulation tester, the test piece is attached to a constant temperature heating element, the amount of heat flowing toward the low temperature outside air becomes constant, and the heating element 2 hours after the surface temperature of the sample reaches a constant value, the heat loss transmitted through the test piece is obtained, and it is dissipated at the same temperature difference and time without leaving the test piece. The heat retention rate (%) was determined from the ratio to the heat loss. The measurement was performed twice, and the average value was calculated as the result. The results are shown in Table 4.
Figure 2004088016
Before this test, it was speculated that fabric a was inferior in heat retention rate compared to fabric b consisting only of silk fibers because nylon fibers inferior to silk fibers in terms of heat retention were also used. In addition, from Table 4, the heat retention rate of the fabric a was much higher than that of the fabric b although it was used for one year. From this result, it can be inferred that the fabric a has a high heat retaining property when not in use and maintains a higher heat retaining property than the fabric b made only of silk fibers even after one year of use. Thus, the fiber material that is the fabric of the present invention that can maintain higher heat retention over a long period of time as compared with a fabric made only of silk is made only of silk, even if it constitutes a thinner and lighter clothing. Since it is possible to maintain heat retention equivalent to that of the fabric, it can be said that the material is still more suitable as a material for clothing.
(Test Example 4) Measurement of Breaking Strength and Breaking Elongation Changes in the breaking strength and breaking elongation of the fabric that is the fiber material of the present invention over time were compared with those of the fabric consisting only of silk fibers.
Test sample sample a: An unused fabric which is a fiber material of the present invention circularly knitted using 70% of a yarn made of silk and 30% of a yarn made of titanium oxide-containing nylon fiber.
Sample b: A fabric a that was repeatedly worn and washed for one year.
Sample c: An unused fabric circularly knitted with 100% silk yarn.
Sample d: The fabric c was repeatedly worn and washed for one year.
Test Method The test samples a, b, c and d obtained were subjected to measurement tests for breaking strength and breaking elongation. The test was requested from the Agriculture, Forestry and Fisheries Consumption Technology Center, using a Tensilon type 2 material testing machine, a test length of 10 cm, and H.264. S40 mm / min, C.I. The test was performed under the condition of S100 mm / min. The results are shown in Table 5.
Figure 2004088016
From Table 5, in the case of the sample made of the fabric of the present invention, the breaking strength was 3.46 g / d to 2.47 g / d and the breaking strength even after 1 year of use (sample b) from unused (sample a). This shows that the elongation is only reduced from 14.3% to 10.8%, and the performance deterioration with time is effectively suppressed. On the other hand, in the case of a sample made of 100% silk fabric, the breaking strength was changed from 3.254 g / d to 0.493 g / d when it was not used (sample c) and was used for one year (sample d). In addition, the results show that the elongation at break greatly decreased from 15.1% to 3.2%. That is, the clothing made of the fabric that is the fiber material of the present invention capable of maintaining the breaking strength and the breaking elongation over a long period of time has a strength equivalent to that of the fabric made only of silk fibers even if it is thin. Therefore, it is more suitable as a material for lightweight clothing.

絹等の天然繊維特有の風合を損なうことなく、経時においても光による黄変や汗による黄ばみが有効に防止され、かつ有毒ガスの付着残留度が少なく、さらに保温性、強度の経時的な低下も有効に防止され得、それのみならず、より低く抑えられた生産コストで製造し得る繊維材料、例えば糸、編物又は織物製品等が提供され得る。  Without damaging the texture peculiar to natural fibers such as silk, yellowing due to light and yellowing due to sweat can be effectively prevented over time, and the adhesion residue of toxic gas is small, and heat retention and strength over time Degradation can also be effectively prevented, as well as fiber materials such as yarns, knitted fabrics or woven products that can be produced at lower production costs.

Claims (13)

酸化チタンを含有した化学繊維と天然繊維からなり、これら両繊維が相互に接触する形態で存在することを特徴とする、改良された被服要求品質を有する繊維材料。A fiber material having improved qualities required for clothing, comprising a chemical fiber containing titanium oxide and a natural fiber, and the two fibers are present in contact with each other. 前記繊維材料は、酸化チタンを含有した化学繊維と天然繊維とから紡いで作られた糸である請求項１記載の、改良された被服要求品質を有する繊維材料。2. The fiber material having improved clothing requirement quality according to claim 1, wherein the fiber material is a yarn made by spinning a chemical fiber containing titanium oxide and a natural fiber. 前記繊維材料は、酸化チタンを含有した化学繊維からなる芯糸の外表面に、天然繊維からなる鞘糸を巻き付けて作られた複合糸であることを特徴とする請求項２記載の、改良された被服要求品質を有する繊維材料。The improved fiber material according to claim 2, wherein the fiber material is a composite yarn made by winding a sheath yarn made of natural fiber around an outer surface of a core yarn made of chemical fiber containing titanium oxide. A textile material with the required clothing quality. 前記複合糸は、前記芯糸が実質露出しない状態で前記鞘糸が前記芯糸に巻き付けられていることを特徴とする請求項３記載の、改良された被服要求品質を有する繊維材料。4. The fiber material having improved clothing requirement quality according to claim 3, wherein the composite yarn has the sheath yarn wound around the core yarn in a state where the core yarn is not substantially exposed. 前記繊維材料は、酸化チタンを含有した化学繊維からなる糸と天然繊維からなる糸とを互いに撚り合わせて作られた撚り糸である請求項２記載の、改良された被服要求品質を有する繊維材料。3. The fiber material having improved clothing requirement quality according to claim 2, wherein the fiber material is a twisted yarn made by twisting a yarn made of a chemical fiber containing titanium oxide and a yarn made of natural fiber. 前記繊維材料は、布を構成する糸の少なくとも一部において、請求項２記載の糸、請求項３若しくは４記載の複合糸又は請求項５記載の撚り糸を使用して織られた織布である請求項１記載の、改良された被服要求品質を有する繊維材料。The fiber material is a woven fabric woven by using the yarn according to claim 2, the composite yarn according to claim 3 or 4, or the twisted yarn according to claim 5 in at least a part of the yarn constituting the fabric. 2. A textile material having improved clothing requirements as claimed in claim 1. 前記繊維材料は、布を構成する糸の少なくとも一部において、請求項２記載の糸、請求項３又は４記載の複合糸又は請求項５記載の撚り糸を使用して編成された編物である請求項１記載の、改良された被服要求品質を有する繊維材料。The fiber material is a knitted fabric knitted using the yarn according to claim 2, the composite yarn according to claim 3 or 4, or the twisted yarn according to claim 5 in at least a part of the yarn constituting the cloth. Item 2. A fiber material having improved clothing requirement quality. 前記繊維材料は、酸化チタンを含有した化学繊維からなる糸を織布の中間材の経糸及び／又は緯糸に用い、該中間材にその上方及び下方より天然繊維からなる糸を該中間材を覆い隠すように織り込んで作られた織布である請求項６記載の、改良された被服要求品質を有する繊維材料。As the fiber material, a yarn made of a chemical fiber containing titanium oxide is used as a warp and / or weft of an intermediate material of a woven fabric, and a yarn made of natural fiber is covered on the intermediate material from above and below. 7. A textile material having improved clothing quality requirements according to claim 6, wherein the textile material is a woven fabric woven so as to hide. 前記繊維材料は、酸化チタンを含有する化学繊維の糸を用いて織られた布と、その上下両側に重ね接結させた、天然繊維の糸を用いて織られた布とからなるサンドイッチ構造布である請求項１記載の、改良された被服要求品質を有する繊維材料。The fiber material is a sandwich-structured cloth comprising a cloth woven using chemical fiber yarns containing titanium oxide and a fabric woven using natural fiber yarns that are overlapped on both upper and lower sides thereof. The fiber material according to claim 1, which has an improved clothing requirement quality. 前記化学繊維には、繊維全重量に基づいて０．０１ないし５．０重量％の酸化チタンが含有されている請求項１ないし９のうちいずれか１項記載の、改良された被服要求品質を有する繊維材料。10. The improved clothing requirement quality according to claim 1, wherein the chemical fiber contains 0.01 to 5.0% by weight of titanium oxide based on the total weight of the fiber. Having fiber material. 前記天然繊維は、絹である請求項１ないし９のうちいずれか１項記載の、改良された被服要求品質を有する繊維材料。The said natural fiber is silk, The fiber material which has the improved clothing requirement quality of any one of Claim 1 thru | or 9. 前記化学繊維は、ポリエステル系繊維、ポリアミド系繊維（ナイロン繊維）、ポリプロピレン系繊維、ポリエチレン系繊維、ポリプロミックス系繊維、ポリクラール系繊維等の合成繊維、ビスコース繊維、銅アンモニアレーヨン等の再生繊維及びアセテート繊維等の半合成繊維からなる群より選択される少なくとも一種の繊維である請求項１ないし１０のうちいずれか１項記載の、改良された被服要求品質を有する繊維材料。The chemical fibers include polyester fibers, polyamide fibers (nylon fibers), polypropylene fibers, polyethylene fibers, polypromix fibers, polyclar fibers, and other synthetic fibers, viscose fibers, regenerated fibers such as copper ammonia rayon, and the like. The fiber material having improved clothing quality requirements according to any one of claims 1 to 10, which is at least one fiber selected from the group consisting of semi-synthetic fibers such as acetate fibers. 酸化チタンを含有した化学繊維と天然繊維とから、これら両繊維が相互に接触する形態で存在するように繊維材料を構成することにより、繊維材料の被服要求品質を改良する方法。A method for improving the quality of clothing requirements of a fiber material by composing the fiber material from a chemical fiber containing titanium oxide and a natural fiber so that both the fibers are in contact with each other.
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