JP5551449B2 - Leather-like sheets and clothing - Google Patents
Leather-like sheets and clothing Download PDFInfo
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- JP5551449B2 JP5551449B2 JP2010001932A JP2010001932A JP5551449B2 JP 5551449 B2 JP5551449 B2 JP 5551449B2 JP 2010001932 A JP2010001932 A JP 2010001932A JP 2010001932 A JP2010001932 A JP 2010001932A JP 5551449 B2 JP5551449 B2 JP 5551449B2
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- 239000000835 fiber Substances 0.000 claims description 74
- 239000004744 fabric Substances 0.000 claims description 48
- 229920000642 polymer Polymers 0.000 claims description 27
- 239000002131 composite material Substances 0.000 claims description 26
- 229920002635 polyurethane Polymers 0.000 claims description 25
- 239000004814 polyurethane Substances 0.000 claims description 25
- 229920000728 polyester Polymers 0.000 claims description 14
- 238000009940 knitting Methods 0.000 description 30
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 21
- -1 polyethylene terephthalate Polymers 0.000 description 18
- 238000000034 method Methods 0.000 description 13
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- 230000004580 weight loss Effects 0.000 description 6
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- 229920001971 elastomer Polymers 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- 239000002202 Polyethylene glycol Substances 0.000 description 4
- 239000004721 Polyphenylene oxide Substances 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
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- 150000002148 esters Chemical class 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 229920000570 polyether Polymers 0.000 description 4
- 229920001223 polyethylene glycol Polymers 0.000 description 4
- 238000009987 spinning Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004043 dyeing Methods 0.000 description 3
- 210000004177 elastic tissue Anatomy 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000002074 melt spinning Methods 0.000 description 3
- 229920000747 poly(lactic acid) Polymers 0.000 description 3
- 229920001707 polybutylene terephthalate Polymers 0.000 description 3
- 239000004626 polylactic acid Substances 0.000 description 3
- 229920005749 polyurethane resin Polymers 0.000 description 3
- 206010016322 Feeling abnormal Diseases 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
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- 239000003086 colorant Substances 0.000 description 2
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- 238000002788 crimping Methods 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229920002215 polytrimethylene terephthalate Polymers 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002781 deodorant agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000006081 fluorescent whitening agent Substances 0.000 description 1
- 235000019256 formaldehyde Nutrition 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 239000003230 hygroscopic agent Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000000077 insect repellent Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000006224 matting agent Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000002121 nanofiber Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000005080 phosphorescent agent Substances 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229920000233 poly(alkylene oxides) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 150000003609 titanium compounds Chemical class 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Description
本発明は、ソフトな風合いを有し、かつストレッチ性に優れた皮革様シートおよび衣料に関する。 The present invention relates to a leather-like sheet and clothing having a soft texture and excellent stretchability.
従来、皮革様シートは、天然皮革にはない軽量性などの特長を有しているため、シューズ、バッグなど多岐にわたる用途に使用されている（例えば、特許文献１、特許文献２、特許文献３、特許文献４参照）。
しかしながら、従来の皮革様シートは風合いやストレッチ性の点で十分とはいえず、衣料用途などに用いることができないという問題があった。
Conventionally, leather-like sheets have features such as lightness that are not found in natural leather, and are therefore used in a wide variety of applications such as shoes and bags (for example, Patent Document 1, Patent Document 2, Patent Document 3). , See Patent Document 4).
However, the conventional leather-like sheet is not sufficient in terms of texture and stretchability, and has a problem that it cannot be used for clothing.
本発明は上記の背景に鑑みなされたものであり、その目的は、ソフトな風合いを有し、かつストレッチ性に優れた皮革様シートおよび衣料を提供することにある。 This invention is made | formed in view of said background, The objective is to provide the leather-like sheet | seat and clothing which have a soft texture and was excellent in stretch property.
本発明者は上記の課題を達成するため鋭意検討した結果、単繊維径が極めて小さい超極細繊維を用いて編物を得たのち、該編物に高分子弾性体を含浸させると、ソフトな風合いを有し、かつストレッチ性に優れた皮革様シートが得られることを見出し、さらに鋭意検討を重ねることにより本発明を完成するに至った。 As a result of intensive studies to achieve the above-mentioned problems, the present inventor obtained a knitted fabric using ultrafine fibers having an extremely small single fiber diameter, and then impregnated the knitted fabric with a polymer elastic body to give a soft texture. It has been found that a leather-like sheet having excellent stretchability is obtained, and the present invention has been completed by further intensive studies.
かくして、本発明によれば「単繊維径が１０〜１０００ｎｍであり、かつフィラメント数が１０００本以上の長繊維からなるフィラメント糸Ａを含む編物と、高分子弾性体とで構成され、厚さが０．５０〜０．８２ｍｍの範囲内であることを特徴とする皮革様シート。
」が提供される。 その際、前記フィラメント糸Ａがポリエステルからなることが好ましい。また、前記フィラメント糸Ａが、海成分と島成分とからなる海島型複合繊維の海成分を溶解除去して得られた糸条であることが好ましい。また、前記編物に他糸条として弾性糸が含まれることが好ましい。また、前記高分子弾性体がポリウレタンであることが好ましい。
Thus, according to the present invention, “a knitted fabric including filament yarn A composed of long fibers having a single fiber diameter of 10 to 1000 nm and a filament number of 1000 or more, and a polymer elastic body, and having a thickness Is in the range of 0.50 to 0.82 mm .
Is provided. At that time, the filament yarn A is preferably made of polyester . Moreover , it is preferable that the filament yarn A is a yarn obtained by dissolving and removing a sea component of a sea-island type composite fiber composed of a sea component and an island component. Moreover, it is preferable that an elastic yarn is included as another yarn in the knitted fabric. The polymer elastic body is preferably polyurethane.
本発明の皮革様シートにおいて、シートの目付が５０〜４００ｇ／ｍ２の範囲内であることが好ましい。また、シートのタテ方向またはヨコ方向の破断伸度が６０％以上であることが好ましい。
また、本発明によれば、前記の皮革様シートを用いてなる衣料が提供される。
Oite the leather-like sheet of the present invention, it is preferred basis weight of the sheet is in the range of 50 to 400 g / m 2. Moreover, it is preferable that the breaking elongation of a sheet | seat direction or a horizontal direction is 60% or more.
Moreover, according to this invention, the clothing which uses the said leather-like sheet | seat is provided.
本発明によれば、ソフトな風合いを有し、かつストレッチ性に優れた皮革様シートおよび衣料が得られる。 ADVANTAGE OF THE INVENTION According to this invention, the leather-like sheet | seat and clothing which have a soft texture and were excellent in stretch property are obtained.
以下、本発明の実施の形態について詳細に説明する。
まず、フィラメント糸Ａ（以下、「ナノファイバー」と称することもある。）において、その単繊維径（単繊維の直径）が１０〜１０００ｎｍ（好ましくは１００〜９００ｎｍ、特に好ましくは５５０〜９００ｎｍ）の範囲内であることが肝要である。かかる単繊維径を単繊維繊度に換算すると、０．０００００１〜０．０１ｄｔｅｘに相当する。該単繊維径が１０ｎｍよりも小さい場合は繊維強度が低下するため実用上好ましくない。逆に、該単繊維径が１０００ｎｍよりも大きい場合は、ソフトな風合いが得られないおそれがあり好ましくない。ここで、単繊維の断面形状が丸断面以外の異型断面である場合には、外接円の直径を単繊維径とする。なお、単繊維径は、透過型電子顕微鏡で繊維の横断面を撮影することにより測定が可能である。また、単繊維繊度のばらつきが−２０％〜＋２０％の範囲内であることが好ましい。
Hereinafter, embodiments of the present invention will be described in detail.
First, in the filament yarn A (hereinafter, also referred to as “nanofiber”), the single fiber diameter (single fiber diameter) is 10 to 1000 nm (preferably 100 to 900 nm, particularly preferably 550 to 900 nm). It is important to be within the range. When the single fiber diameter is converted into a single fiber fineness, it corresponds to 0.000001 to 0.01 dtex. When the single fiber diameter is smaller than 10 nm, the fiber strength is lowered, which is not preferable for practical use. Conversely, when the single fiber diameter is larger than 1000 nm, a soft texture may not be obtained, which is not preferable. Here, when the cross-sectional shape of the single fiber is an atypical cross section other than the round cross section, the diameter of the circumscribed circle is defined as the single fiber diameter. The single fiber diameter can be measured by photographing the cross section of the fiber with a transmission electron microscope. Moreover, it is preferable that the dispersion | variation in single fiber fineness exists in the range of -20%-+ 20%.
前記フィラメント糸Ａにおいて、フィラメント数は特に限定されないが、ソフトな風合いを得る上で１０００本以上（より好ましくは３０００〜１００００本）であることが好ましい。また、フィラメント糸Ａの総繊度（単繊維繊度とフィラメント数との積）としては、５〜１５０ｄｔｅｘの範囲内であることが好ましい。 In the filament yarn A, the number of filaments is not particularly limited, but is preferably 1000 or more (more preferably 3000 to 10,000) in order to obtain a soft texture. The total fineness of the filament yarn A (the product of the single fiber fineness and the number of filaments) is preferably in the range of 5 to 150 dtex.
前記フィラメント糸Ａの繊維形態は特に限定されないが、長繊維（マルチフィラメント糸）であることが好ましい。単繊維の断面形状も特に限定されず、丸、三角、扁平、中空など公知の断面形状でよい。また、通常の空気加工、仮撚捲縮加工が施されていてもさしつかえない。 The fiber form of the filament yarn A is not particularly limited, but is preferably a long fiber (multifilament yarn). The cross-sectional shape of the single fiber is not particularly limited, and may be a known cross-sectional shape such as a circle, a triangle, a flat shape, or a hollow shape. In addition, normal air processing and false twist crimping may be applied.
前記フィラメント糸Ａを形成するポリマーの種類としては特に限定されないが、ポリエステル系ポリマーが好ましい。例えば、ポリエチレンテレフタレートやポリトリメチレンテレフタレート、ポリブチレンテレフタレート、ポリ乳酸、ステレオコンプレックスポリ乳酸、第３成分を共重合させたポリエステルなどが好ましく例示される。かかるポリエステルとしては、マテリアルリサイクルまたはケミカルリサイクルされたポリエステルや、特開２００９−０１６９４号公報に記載された、バイオマスすなわち生物由来の物質を原材料として得られたモノマー成分を使用してなるポリエチレンテレフタレートであってもよい。さらには、特開２００４−２７００９７号公報や特開２００４−２１１２６８号公報に記載されているような、特定のリン化合物およびチタン化合物を含む触媒を用いて得られたポリエステルでもよい。該ポリマー中には、本発明の目的を損なわない範囲内で必要に応じて、微細孔形成剤、カチオン染料可染剤、着色防止剤、熱安定剤、蛍光増白剤、艶消し剤、着色剤、吸湿剤、無機微粒子が１種または２種以上含まれていてもよい。 The type of polymer that forms the filament yarn A is not particularly limited, but a polyester polymer is preferable. For example, polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polylactic acid, stereocomplex polylactic acid, polyester obtained by copolymerizing the third component, and the like are preferably exemplified. Examples of such polyester include material-recycled or chemical-recycled polyester and polyethylene terephthalate described in JP-A-2009-01694, which uses a monomer component obtained from biomass, that is, a biological material. May be. Furthermore, the polyester obtained using the catalyst containing the specific phosphorus compound and titanium compound which are described in Unexamined-Japanese-Patent No. 2004-270097 and 2004-21268 may be sufficient. In the polymer, a fine pore forming agent, a cationic dye dyeing agent, an anti-coloring agent, a heat stabilizer, a fluorescent whitening agent, a matting agent, a coloring agent may be added as necessary within the range not impairing the object of the present invention. 1 type (s) or 2 or more types of an agent, a hygroscopic agent, and inorganic fine particles may be contained.
本発明において、編物は、前記フィラメント糸Ａのみで構成されてよいが、前記フィラメント糸Ａと他糸条とで構成されてもよい。その際、かかる他糸条としては、単繊維径が１０００ｎｍより大の、前記のようなポリエステルからなるポリエスエテル糸条や弾性糸が好ましい。特に、他の糸条として弾性糸が含まれていると、編物にさらに優れたストレッチ性が付加され好ましい。 In the present invention, the knitted fabric may be composed of only the filament yarn A, but may be composed of the filament yarn A and other yarns. At this time, as such other yarns, polyester yarns and elastic yarns made of polyester as described above having a single fiber diameter of more than 1000 nm are preferable. In particular, when an elastic yarn is included as another yarn, it is preferable because a further excellent stretch property is added to the knitted fabric.
ここで、前記弾性糸としては、ポリブチレンテレフタレートをハードセグメントとし、ポリオキシエチレングリコールをソフトセグメントとするポリエーテルエステルエラストマーからなる吸水性ポリエーテルエステル弾性糸、ポリブチレンテレフタレートをハードセグメントとし、ポリテトラメチレンオキシドグリコールをソフトセグメントとするポリエーテルエステルエラストマーからなる非吸水性ポリエーテルエステル弾性糸、ポリウレタン弾性糸、ポリトリメチレンテレフタレート糸、合成ゴム系弾性糸、天然ゴム系弾性糸などが好適に例示される。 Here, as the elastic yarn, polybutylene terephthalate is used as a hard segment, polyoxyethylene glycol is used as a soft segment, a water-absorbing polyether ester elastic yarn made of a polyether ester elastomer, and polybutylene terephthalate is used as a hard segment. Preferable examples include non-water-absorbing polyether ester elastic yarn made of polyether ester elastomer having methylene oxide glycol as a soft segment, polyurethane elastic yarn, polytrimethylene terephthalate yarn, synthetic rubber elastic yarn, natural rubber elastic yarn, etc. The
前記弾性糸の総繊度としては、５〜１００ｄｔｅｘ（より好ましくは１０〜４０ｄｔｅｘ）の範囲内であることが好ましい。前記弾性繊維糸の破断伸度は２００％以上のものが好ましく、染色加工時の熱処理によって性能が損なわれないものが好ましい。 The total fineness of the elastic yarn is preferably in the range of 5 to 100 dtex (more preferably 10 to 40 dtex). The breaking elongation of the elastic fiber yarn is preferably 200% or more, and preferably the performance is not impaired by the heat treatment during the dyeing process.
前記の編物は例えば以下の製造方法により製造することができる。まず、海成分と、その径が１０〜１０００ｎｍである島成分とで形成される海島型複合繊維（フィラメント糸Ａ用繊維）を用意する。かかる海島型複合繊維としては、特開２００７−２３６４号公報に開示された海島型複合繊維（島数１００〜１５００）が好ましく用いられる。 The knitted fabric can be manufactured, for example, by the following manufacturing method. First, a sea-island type composite fiber (fiber for filament yarn A) formed of a sea component and an island component having a diameter of 10 to 1000 nm is prepared. As such a sea-island type composite fiber, a sea-island type composite fiber (the number of islands: 100 to 1500) disclosed in JP 2007-2364 A is preferably used.
ここで、海成分ポリマーとしては、繊維形成性の良好なポリエステル、ポリアミド、ポリスチレン、ポリエチレンなどが好ましい。例えば、アルカリ水溶液易溶解性ポリマーとしては、ポリ乳酸、超高分子量ポリアルキレンオキサイド縮合系ポリマー、ポリエチレングルコール系化合物共重合ポリエステル、ポリエチレングリコール系化合物と５−ナトリウムスルホン酸イソフタル酸の共重合ポリエステルが好適である。なかでも、５−ナトリウムスルホイソフタル酸６〜１２モル％と分子量４０００〜１２０００のポリエチレングルコールを３〜１０重量％共重合させた固有粘度が０．４〜０．６のポリエチレンテレフタレート系共重合ポリエステルが好ましい。 Here, as the sea component polymer, polyester, polyamide, polystyrene, polyethylene and the like having good fiber forming properties are preferable. For example, as an easily soluble polymer in an alkaline aqueous solution, polylactic acid, an ultra-high molecular weight polyalkylene oxide condensation polymer, a polyethylene glycol compound copolymer polyester, a copolymer polyester of polyethylene glycol compound and 5-sodium sulfonic acid isophthalic acid may be used. Is preferred. Among them, a polyethylene terephthalate copolymer polyester having an intrinsic viscosity of 0.4 to 0.6 obtained by copolymerizing 6 to 12 mol% of 5-sodium sulfoisophthalic acid and 3 to 10% by weight of polyethylene glycol having a molecular weight of 4000 to 12000. Is preferred.
一方、島成分ポリマーは、最終的にフィラメント糸Ａを形成するポリマーであるので、前述のようなポリマーが好適に用いられる。
上記の海成分ポリマーと島成分ポリマーからなる海島型複合繊維は、溶融紡糸時における海成分の溶融粘度が島成分ポリマーの溶融粘度よりも大きいことが好ましい。また、島成分の径は、１０〜１０００ｎｍの範囲とする必要がある。その際、該径が真円でない場合は外接円の直径を求める。前記の海島型複合繊維において、その海島複合重量比率（海：島）は、４０：６０〜５：９５の範囲が好ましく、特に３０：７０〜１０：９０の範囲が好ましい。
On the other hand, since the island component polymer is a polymer that finally forms the filament yarn A, the above-described polymer is preferably used.
The sea-island composite fiber composed of the sea component polymer and the island component polymer preferably has a sea component melt viscosity higher than that of the island component polymer during melt spinning. Further, the diameter of the island component needs to be in the range of 10 to 1000 nm. At this time, if the diameter is not a perfect circle, the diameter of the circumscribed circle is obtained. In the sea-island composite fiber, the sea-island composite weight ratio (sea: island) is preferably in the range of 40:60 to 5:95, and particularly preferably in the range of 30:70 to 10:90.
かかる海島型複合繊維は、例えば以下の方法により容易に製造することができる。すなわち、前記の海成分ポリマーと島成分ポリマーとを用い溶融紡糸する。溶融紡糸に用いられる紡糸口金としては、島成分を形成するための中空ピン群や微細孔群を有するものなど任意のものを用いることができる。吐出された海島型断面複合繊維マルチフィラメントは、冷却風によって固化され、好ましくは４００〜６０００ｍ／分で溶融紡糸された後に巻き取られる。得られた未延伸糸は、別途延伸工程をとおして所望の強度・伸度・熱収縮特性を有する複合繊維とするか、あるいは、一旦巻き取ることなく一定速度でローラーに引き取り、引き続いて延伸工程をとおした後に巻き取る方法のいずれでも構わない。さらに、仮撚捲縮加工を施してもよい。かかる海島型複合繊維マルチフィラメントにおいて、単糸繊維繊度、フィラメント数、総繊度としてはそれぞれ単糸繊維繊度０．５〜１０．０ｄｔｅｘ、フィラメント数５〜７５本、総繊度３０〜１７０ｄｔｅｘ（好ましくは３０〜１００ｄｔｅｘ）の範囲内であることが好ましい。 Such sea-island type composite fibers can be easily produced, for example, by the following method. That is, melt spinning is performed using the sea component polymer and the island component polymer. As the spinneret used for melt spinning, any one such as a hollow pin group for forming an island component or a group having a fine hole group can be used. The discharged sea-island type cross-section composite fiber multifilament is solidified by cooling air, preferably melt-spun at 400 to 6000 m / min, and wound up. The obtained undrawn yarn is made into a composite fiber having desired strength, elongation, and heat shrinkage properties through a separate drawing process, or is taken up by a roller at a constant speed without being wound once, and subsequently drawn. Any of the methods of winding after passing through may be used. Further, false twist crimping may be performed. In such a sea-island type composite fiber multifilament, the single yarn fiber fineness, the number of filaments, and the total fineness are respectively single yarn fiber fineness of 0.5 to 10.0 dtex, number of filaments of 5 to 75, and total fineness of 30 to 170 dtex (preferably 30). It is preferable to be within the range of ˜100 dtex).
次いで、かかる海島型複合繊維マルチフィラメントを単独で用いるか、必要に応じて単繊維径が１０００ｎｍより大の弾性繊維糸などの他糸条とともに用いて、編物を製編する。 Then, the knitted fabric is knitted by using the sea-island type composite fiber multifilament alone or, if necessary, together with other yarns such as elastic fiber yarn having a single fiber diameter larger than 1000 nm.
その際、編物の種類は、よこ編物であってもよいしたて編物であってもよい。よこ編組織としては、天竺、ゴム編、両面編、パール編、タック編、浮き編、片畔編、レース編、添え毛編等が好ましく例示される。天竺の編組織で２種の糸条で複合ループを形成したプレーテイング天竺、その際、一方の糸条を弾性繊維糸条としたベア天竺などが好適に例示される。たて編組織としては、シングルデンビー編、シングルアトラス編、ダブルコード編、ハーフ編、裏毛編、ジャガード編等が好ましく例示される。なお、製編は、丸編機、横編機、トリコット編機、ラッシェル編機等など通常の編機を用いて通常の方法により製編することができる。層数も特に限定されず単層でもよいし２層以上の多層構造を有する編物でもよい。 At this time, the type of the knitted fabric may be a weft knitted fabric or a newly knitted fabric. Preferable examples of the weft knitting structure include tenshi, rubber knitting, double-sided knitting, pearl knitting, tuck knitting, float knitting, one-side knitting, lace knitting, and bristle knitting. Preferred examples include a platen sheet in which a composite loop is formed by two types of yarns in a knitted structure of a sheet, and a bare sheet having one fiber as an elastic fiber yarn. Preferred examples of the warp knitting structure include a single denby knitting, a single atlas knitting, a double cord knitting, a half knitting, a back knitting, a jacquard knitting and the like. The knitting can be knitted by a normal method using a normal knitting machine such as a circular knitting machine, a flat knitting machine, a tricot knitting machine, and a Raschel knitting machine. The number of layers is not particularly limited and may be a single layer or a knitted fabric having a multilayer structure of two or more layers.
次いで、該布帛にアルカリ水溶液処理を施し、前記海島型複合繊維の海成分をアルカリ水溶液で溶解除去することにより、海島型複合繊維マルチフィラメントを、単繊維径が１０〜１０００ｎｍのフィラメント糸Ａとする。その際、アルカリ水溶液処理の条件としては、濃度０．５〜４％のＮａＯＨ水溶液を使用し５５〜９０℃の温度で処理するとよい。
さらに、該布帛にスパンレース用のウオーターニードル装置で高圧水を噴射すると、凝集密着しているフィラメント糸Ａをばらけさせることができ好ましい。
Next, the fabric is subjected to an alkaline aqueous solution treatment, and sea components of the sea-island composite fiber are dissolved and removed with an alkaline aqueous solution, whereby the sea-island composite fiber multifilament is made into a filament yarn A having a single fiber diameter of 10 to 1000 nm. . At that time, the alkaline aqueous solution treatment may be performed at a temperature of 55 to 90 ° C. using a NaOH aqueous solution having a concentration of 0.5 to 4%.
Furthermore, when high-pressure water is sprayed onto the fabric with a spunlace water needle device, it is preferable because the filament yarn A which is coherently adhered can be dispersed.
また、常法の染色加工、起毛加工、撥水加工、吸水加工、バッフィング加工、さらには、紫外線遮蔽あるいは制電剤、抗菌剤、消臭剤、防虫剤、蓄光剤、再帰反射剤、マイナスイオン発生剤等の機能を付与する各種加工を前記編物に付加適用してもよい。 In addition, conventional dyeing, brushing, water-repellent, water-absorbing, buffing, UV shielding or antistatic agent, antibacterial agent, deodorant, insect repellent, phosphorescent agent, retroreflective agent, negative ion Various processings that impart functions such as a generating agent may be additionally applied to the knitted fabric.
本発明の皮革様シートは前記編物に高分子弾性体を含浸させたものである。ここで、前記高分子弾性体の種類および含浸方法は公知にものでよい。
例えば、高分子弾性体としては、例えばＳＢＲ、ＮＢＲ、ポリウレタン、ポリエステルエラストマー、ポリアクリル酸エステル系エラストマー等があげられる。なかでも、ポリウレタン系のエラストマーであることが好ましい。特に風合い面からはこの高分子弾性体は多孔質であることが好ましく、例えばジメチルホルムアミド溶解性の湿式凝固用ポリウレタンなどが好ましい。
編物中の繊維と高分子弾性体の比率は、高分子弾性体／繊維（以下Ｒ／Ｆとする）が１５〜６０％、さらには３０〜５０％であることが好ましい。
The leather-like sheet of the present invention is obtained by impregnating the knitted fabric with a polymer elastic body. Here, the kind of the polymer elastic body and the impregnation method may be publicly known.
For example, examples of the polymer elastic body include SBR, NBR, polyurethane, polyester elastomer, and polyacrylate elastomer. Of these, polyurethane elastomers are preferred. In particular, the polymer elastic body is preferably porous in terms of texture, for example, dimethylformamide-soluble polyurethane for wet coagulation.
The ratio of the fiber to the polymer elastic body in the knitted fabric is preferably 15 to 60%, more preferably 30 to 50% of the polymer elastic body / fiber (hereinafter referred to as R / F).
含浸方法としては、ポリウレタン樹脂などの高分子弾性体をジメチルホルムアミド（「ＤＭＦ」ということもある。）、ジメチルアセトアミド、テトラヒドロフラン、などの有機溶剤溶液又は水性エマルジョンなどとして編物に含浸し、ポリウレタン樹脂を凝固処理することによって皮革様シートを得ることができる。 As an impregnation method, an elastic polymer such as polyurethane resin is impregnated into a knitted fabric as an organic solvent solution or aqueous emulsion such as dimethylformamide (also referred to as “DMF”), dimethylacetamide, tetrahydrofuran, etc. A leather-like sheet can be obtained by solidification treatment.
ここで、ポリウレタン樹脂を凝固する方法は、ポリウレタン樹脂の非溶剤で溶剤に混和性の液体で処理する湿式法、溶媒を加熱して蒸発させる乾式法など任意に選択できるが風合い、挫屈性など得られるシートの性能から湿式凝固法を採用することがもっとも好ましい。 Here, the method of solidifying the polyurethane resin can be arbitrarily selected, such as a wet method in which a non-solvent of the polyurethane resin is used and a liquid miscible with the solvent, or a dry method in which the solvent is heated to evaporate. The wet coagulation method is most preferably adopted from the performance of the obtained sheet.
かくして得られた皮革様シートにおいて、基体が編物であるので、優れたストレッチ性を有する。その際、ストレッチ性として、皮革様シートのタテ方向またはヨコ方向（好ましくはタテ方向およびヨコ方向）の破断伸度が６０％以上（より好ましくは１００〜５００％）であることが好ましい。 In the leather-like sheet thus obtained, the substrate is a knitted fabric, and therefore has excellent stretch properties. In that case, as stretch property, it is preferable that the breaking elongation of the leather-like sheet in the vertical direction or the horizontal direction (preferably the vertical direction and the horizontal direction) is 60% or more (more preferably 100 to 500%).
また、基体となる編物には、単繊維径が１０〜１０００ｎｍのフィラメント糸Ａが含まれるので、皮革様シートはソフトな風合いを有する。
また、かかる皮革様シートに軽量性を付加する上で、皮革様シート全体の厚さが０．２〜０．８ｍｍの範囲内であることが好ましい。また、皮革様シート全体の目付としては５０〜４００ｇ／ｍ２の範囲内であることが好ましい。
Moreover, since the knitted material used as the base includes filament yarn A having a single fiber diameter of 10 to 1000 nm, the leather-like sheet has a soft texture.
Moreover, when adding lightness to this leather-like sheet, it is preferable that the thickness of the entire leather-like sheet is in the range of 0.2 to 0.8 mm. Moreover, it is preferable that it is in the range of 50-400 g / m < 2 > as a fabric weight of the whole leather-like sheet | seat.
次に、本発明の衣料は前記の皮革様シートを用いてなる衣料である。かかる衣料には前記の皮革様シートが含まれるので、ソフトな風合いを有し、かつストレッチ性に優れる。かかる衣料には、紳士衣料、婦人衣料、スポーツ衣料、下着などが含まれる。
なお、前記の皮革様シートは衣料用途だけでなく、グローブ、シューズ、バッグ、雑貨類など他の用途にも用いることができることはいうまでもない。
Next, the garment of the present invention is a garment made using the leather-like sheet. Such a garment includes the leather-like sheet, so that it has a soft texture and is excellent in stretchability. Such clothing includes men's clothing, women's clothing, sports clothing, underwear and the like.
Needless to say, the leather-like sheet can be used not only for clothing but also for other uses such as gloves, shoes, bags, and miscellaneous goods.
次に本発明の実施例及び比較例を詳述するが、本発明はこれらによって限定されるものではない。なお、実施例中の各測定項目は下記の方法で測定した。
＜溶融粘度＞乾燥処理後のポリマーを紡糸時のルーダー溶融温度に設定したオリフィスにセットして５分間溶融保持したのち、数水準の荷重をかけて押し出し、そのときのせん断速度と溶融粘度をプロットする。そのプロットをなだらかにつないで、せん断速度−溶融粘度曲線を作成し、せん断速度が１０００秒−１の時の溶融粘度を見る。
＜溶解速度＞海・島成分の各々０．３φ−０．６Ｌ×２４Ｈの口金にて１０００〜２０００ｍ／分の紡糸速度で糸を巻き取り、さらに残留伸度が３０〜６０％の範囲になるように延伸して、８４ｄｔｅｘ／２４ｆｉｌのマルチフィラメントを作製する。これを各溶剤にて溶解しようとする温度で浴比１００にて溶解時間と溶解量から、減量速度を算出した。
＜単繊維径＞透過型電子顕微鏡で繊維の横断面を撮影することにより測定した。ｎ数５で測定しその平均値を求めた。
＜編物の厚さ＞ＪＩＳ Ｌ １０９６ ８．５に従って測定した。
＜編物の目付＞ＪＩＳ Ｌ １０９６ ８．４．２に従って測定した。
＜編物の破断伸度＞ＪＩＳ Ｌ １０９６ ８．１２に従って測定した。
＜皮革様シートの厚さ＞ＪＩＳ Ｋ ６３２８ ５．３．３に従って測定した。
＜皮革様シートの目付＞ＪＩＳ Ｋ ６３２８ ５．３．４に従って測定した。
＜皮革様シートの破断伸度＞ＪＩＳ Ｋ ６３２８ ５．３．５に従って測定した。
＜風合い＞皮革様シートの風合いを試験者３人が手触りで官能評価し、以下の３段階に評価した。
３級：柔らかくヌメリ感のある風合いを呈し、握りこんだ際の張り・反発感が少なく、ソフト感に優れる。
２級：ややソフト感に欠ける。
１級：張り・反発感が強く、ソフトではない。
Next, although the Example and comparative example of this invention are explained in full detail, this invention is not limited by these. In addition, each measurement item in an Example was measured with the following method.
<Melting viscosity> The polymer after drying is set in the orifice set to the ruder melting temperature at the time of spinning, melted and held for 5 minutes, extruded with several levels of load, and the shear rate and melt viscosity at that time are plotted. To do. By gently connecting the plots, a shear rate-melt viscosity curve is created, and the melt viscosity when the shear rate is 1000 sec- 1 is observed.
<Dissolution rate> The yarn is wound at a spinning speed of 1000 to 2000 m / min with a 0.3φ-0.6L × 24H base of each of the sea and island components, and the residual elongation is in the range of 30 to 60%. To produce a 84 dtex / 24 fil multifilament. The weight loss rate was calculated from the dissolution time and the dissolution amount at a bath ratio of 100 at a temperature at which the solvent was dissolved in each solvent.
<Single fiber diameter> It was measured by photographing the cross section of the fiber with a transmission electron microscope. Measurement was made with n number of 5, and the average value was obtained.
<Thickness of knitted fabric> Measured according to JIS L 1096 8.5.
<Weight of knitted fabric> Measured according to JIS L 1096 8.4.2.
<Elongation at break of knitted fabric> Measured according to JIS L 1096 8.12.
<Thickness of leather-like sheet> It was measured according to JIS K 6328 5.3.3.
<Weight of leather-like sheet> It was measured according to JIS K 6328 5.3.4.
<Elongation at break of leather-like sheet> Measured according to JIS K 6328 5.3.5.
<Texture> The texture of the leather-like sheet was sensory-evaluated by the three testers and was evaluated in the following three stages.
3rd class: A soft and slimy texture, less tension and rebound when gripped, and excellent softness.
2nd grade: Slightly lacks soft feeling.
1st grade: Strong tension and rebound, not soft.
［実施例１］
島成分としてポリエチレンテレフタレート（２８０℃における溶融粘度が１２００ポイズ）、海成分として５−ナトリウムスルホイソフタル酸６モル％と数平均分子量４０００のポリエチレングリコール６重量％を共重合したポリエチレンテレフタレート（２８０℃における溶融粘度が１７５０ポイズ）を用い（溶解速度比（海／島）＝２３０）、海：島＝３０：７０、島数＝８３６の海島型複合未延伸繊維を、紡糸温度２８０℃、紡糸速度１５００ｍ／分で溶融紡糸して一旦巻き取った。
得られた未延伸糸を、延伸温度８０℃、延伸倍率２．５倍でローラー延伸し、次いで１５０℃で熱セットして巻き取った。得られた海島型複合繊維マルチフィラメント（フィラメント糸Ａ用糸条、延伸糸）は５５ｄｔｅｘ／１０ｆｉｌであり、透過型電子顕微鏡ＴＥＭによる繊維横断面を観察したところ、島の形状は丸形状でかつ島の径は７００ｎｍであった。
[Example 1]
Polyethylene terephthalate (melting viscosity at 280 ° C. at 280 ° C.) as an island component, polyethylene terephthalate (melting at 280 ° C.) copolymerized with 6 mol% of 5-sodium sulfoisophthalic acid and 6% by weight of polyethylene glycol having a number average molecular weight of 4000 as a sea component Viscosity is 1750 poise) (dissolution rate ratio (sea / island) = 230), sea: island = 30: 70, number of islands = 836 sea-island type composite undrawn fiber, spinning temperature: 280 ° C., spinning speed: 1500 m / It was melt-spun in minutes and wound up once.
The obtained undrawn yarn was roller-drawn at a drawing temperature of 80 ° C. and a draw ratio of 2.5 times, and then heat-set at 150 ° C. and wound up. The obtained sea-island type composite fiber multifilament (filament yarn A yarn, drawn yarn) was 55 dtex / 10 fil. When the cross section of the fiber was observed with a transmission electron microscope TEM, the shape of the island was round and the island The diameter was 700 nm.
次いで、該海島型複合繊維マルチフィラメントと、２．２倍にドラフトした市販のポリウレタン弾性糸２２ｄｔｅｘ／１ｆｉｌ（旭化成せんい（株）製、ロイカ）とを引きそろえて、ハーフ組織（バック：１０／１２、ミドル：２３／１０、フロント：１０／２３による編方）によりハーフ組織の経編生機を得た。次いで、該編物を５０℃にて湿熱処理した後、海島型複合延伸糸の海成分を除去するために、２．５％ＮａＯＨ水溶液で、５５℃にて３０％減量（アルカリ減量）した。その後、常法の染色仕上げ加工、湿熱加工、乾熱加工を行った。
得られた編物を走査型電子顕微鏡ＳＥＭで編物表面および断面を観察したところ、海成分は完全に溶解除去されており、編物に均一性に優れた超極細繊維（単繊維径が７００ｎｍのフィラメント糸Ａ）が含まれていることを確認した。得られた編物において、厚さは０．４４ｍｍ、目付は１４８ｇ／ｍ２、破断伸度は経方向２５０％、緯方向２８５％であった。
Next, the sea-island type composite fiber multifilament and a commercially available polyurethane elastic yarn 22 dtex / 1fil (made by Asahi Kasei Fibers Co., Ltd., Leuka) drafted 2.2 times are aligned to form a half structure (back: 10/12). , Middle: 23/10, front: 10/23), a warp knitting machine having a half structure was obtained. Next, the knitted fabric was wet-heat treated at 50 ° C., and then the weight was reduced by 30% (alkaline weight loss) at 55 ° C. with a 2.5% NaOH aqueous solution in order to remove sea components of the sea-island type composite drawn yarn. Thereafter, conventional dyeing finishing, wet heat processing, and dry heat processing were performed.
When the knitted surface and cross section of the obtained knitted fabric were observed with a scanning electron microscope SEM, the sea component was completely dissolved and removed, and ultrafine fibers (filament yarn having a single fiber diameter of 700 nm) having excellent uniformity in the knitted fabric. It was confirmed that A) was included. The obtained knitted fabric had a thickness of 0.44 mm, a basis weight of 148 g / m 2 , a breaking elongation of 250% in the warp direction and 285% in the weft direction.
次いで、得られた編物を６重量％のポリウレタン（大日本インキ化学工業（株）製；クリスボンＴＦ５０Ｐ）−ＤＭＦ溶液に浸漬させた後、繊維集合体表面の余分な溶液をかきとり、基体の厚さの９０％で絞った後、基体の圧縮が回復する前に、編物のバック組織面側に２０重量％のポリウレタン（大日本インキ化学工業（株）製；クリスボンＴＦ５０Ｐ）−ＤＭＦ溶液を４５０ｇ／ｍ２の目付でコーティングし、次いで水中に浸漬してポリウレタンを凝固させ、ＤＭＦを十分に洗浄除去した後、１２０℃で乾燥してポリウレタン多孔質層の形成された皮革様シートを得た。
かくして得られた皮革様シートにおいて、厚さは０．５０ｍｍ、目付は２４０ｇ／ｍ２、破断伸度は経方向１７５％、緯方向２１４％であり、風合いはソフト（３級）であり、ソフトな風合いを有し、かつストレッチ性および軽量性に優れるものであった。また、フィラメント糸Ａの単繊維径は７００ｎｍ、ポリウレタン弾性糸の単繊維径は４５μｍであった。
次いで、該皮革様シートを用いて衣料を得て着用したところ、ソフトな風合い(３級)を有し、かつストレッチ性に優れるものであった。
Next, the obtained knitted fabric was dipped in a 6% by weight polyurethane (Dainippon Ink Chemical Co., Ltd .; Crisbon TF50P) -DMF solution, and then the excess solution on the surface of the fiber assembly was scraped off to obtain the thickness of the substrate. After squeezing at 90%, before the compression of the substrate recovers, 450 g / m of 20% by weight polyurethane (manufactured by Dainippon Ink & Chemicals, Inc .; Crisbon TF50P) -DMF solution is applied to the back structure side of the knitted fabric. After coating with a basis weight of 2 , and then dipping in water to solidify the polyurethane, DMF was thoroughly washed away, and dried at 120 ° C., a leather-like sheet with a polyurethane porous layer formed was obtained.
The leather-like sheet thus obtained has a thickness of 0.50 mm, a basis weight of 240 g / m 2 , a breaking elongation of 175% in the warp direction and 214% in the weft direction, and the texture is soft (class 3). It had a good texture and was excellent in stretchability and lightness. The filament yarn A had a single fiber diameter of 700 nm, and the polyurethane elastic yarn had a single fiber diameter of 45 μm.
Subsequently, when the garment was obtained and worn using the leather-like sheet, it had a soft texture (grade 3) and was excellent in stretchability.
［実施例２］
実施例１と同様にフィラメント糸Ａ用糸条として海島型複合繊維マルチフィラメント５６ｄｔｅｘ／１０ｆｉｌを得た。
次いで、２８ゲージの通常の経編機を使用して、前述の海島型複合繊維マルチフィラメントをフロント筬とミドル筬に用い、ポリエチレンテレフタレートからなるマルチフィラメント（３３ｄｔｅｘ／１２ｆｉｌ、単繊維径１６．１μｍ）をバック筬に用い、サテン組織（バック：１０／２１、ミドル：１０／３４、フロント：１０／３４による編方）によりサテン組織の経編生機を得た。
その後、該編物を実施例１と同様の方法で、湿熱処理、アルカリ減量加工、湿熱加工、乾熱加工を行った。この際のアルカリ減量率は２５％であった。
得られた編物を走査型電子顕微鏡ＳＥＭで編物表面および経断面を観察したところ、海成分は完全に溶解除去されており、編物に均一性に優れた超極細繊維（単繊維径が７００ｎｍのフィラメント糸Ａ）が含まれていることを確認した。得られた編物において、厚さは０．５３ｍｍ、目付は２３３ｇ／ｍ２、破断伸度は経方向８１％、緯方向９７％であった。
[Example 2]
In the same manner as in Example 1, a sea-island type composite fiber multifilament 56 dtex / 10 fill was obtained as the yarn for the filament yarn A.
Next, using a 28-gauge ordinary warp knitting machine, the aforementioned sea-island type composite fiber multifilament was used for the front and middle folds, and the multifilament made of polyethylene terephthalate (33 dtex / 12 film, single fiber diameter 16.1 μm). Was used as a back bag, and a warp knitting machine having a satin structure was obtained from a satin structure (back: 10/21, middle: 10/34, front: 10/34).
Thereafter, the knitted fabric was subjected to wet heat treatment, alkali weight loss processing, wet heat processing, and dry heat processing in the same manner as in Example 1. The alkali weight loss rate at this time was 25%.
When the surface and cross section of the knitted fabric were observed with a scanning electron microscope SEM, the sea component was completely dissolved and removed, and the ultra-fine fibers (filament having a single fiber diameter of 700 nm) having excellent uniformity in the knitted fabric. It was confirmed that thread A) was included. The obtained knitted fabric had a thickness of 0.53 mm, a basis weight of 233 g / m 2 , a breaking elongation of 81% in the warp direction and 97% in the weft direction.
次いで、得られた編物を６重量％のポリウレタン（大日本インキ化学工業（株）製；クリスボンＴＦ５０Ｐ）−ＤＭＦ溶液に浸漬させた後、繊維集合体表面の余分な溶液をかきとり、基体の厚さの９０％で絞った後、基体の圧縮が回復する前に、編物のバック組織面側に２０重量％のポリウレタン（大日本インキ化学工業（株）製；クリスボンＴＦ５０Ｐ）−ＤＭＦ溶液を４５０ｇ／ｍ２の目付でコーティングし、次いで水中に浸漬してポリウレタンを凝固させ、ＤＭＦを十分に洗浄除去した後、１２０℃で乾燥してポリウレタン多孔質層の形成された皮革様シートを得た。
かくして得られた皮革様シートにおいて、厚さは０．５８ｍｍ、目付は３２８ｇ／ｍ２、破断伸度は経方向６５％、緯方向７３％であり、風合いはソフト（３級）であり、ソフトな風合い(３級)を有し、かつストレッチ性および軽量性に優れるものであった。また、フィラメント糸Ａの単繊維径は７００ｎｍ、ポリエチレンテレフタレートからなるマルチフィラメントの単繊維径は１６．１μｍであった。
Next, the obtained knitted fabric was dipped in a 6% by weight polyurethane (Dainippon Ink Chemical Co., Ltd .; Crisbon TF50P) -DMF solution, and then the excess solution on the surface of the fiber assembly was scraped off to obtain the thickness of the substrate. After squeezing at 90%, before the compression of the substrate recovers, 450 g / m of 20% by weight polyurethane (manufactured by Dainippon Ink & Chemicals, Inc .; Crisbon TF50P) -DMF solution is applied to the back structure side of the knitted fabric. After coating with a basis weight of 2 , and then dipping in water to solidify the polyurethane, DMF was thoroughly washed away, and dried at 120 ° C., a leather-like sheet with a polyurethane porous layer formed was obtained.
The leather-like sheet thus obtained has a thickness of 0.58 mm, a basis weight of 328 g / m 2 , a breaking elongation of 65% in the warp direction and 73% in the weft direction, and the texture is soft (grade 3). It had a good texture (3rd grade) and was excellent in stretchability and lightness. The single filament diameter of the filament yarn A was 700 nm, and the single filament diameter of the multifilament made of polyethylene terephthalate was 16.1 μm.
［比較例１］
実施例１において、海島型複合繊維マルチフィラメントにかえて、ポリエチレンテレフタレートからなるマルチフィラメントに通常の仮撚捲縮加工を施した仮撚捲縮加工糸９０ｄｔｅｘ／２８８ｆｉｌ（帝人ファイバー（株）製、単繊維径５．４μm）を用いて、２．２倍にドラフトした市販のポリウレタン弾性糸２２ｄｔｅｘ／１ｆｉｌ（旭化成せんい（株）製、ロイカ）とを引きそろえて、ハーフ組織（バック：１０／１２、ミドル：２３／１０、フロント：１０／２３による編方）によりハーフ組織の経編生機を得た。次いで、該織物生機に定法の湿熱加工、乾熱加工を行った。
得られた編物において、厚さは０．４８ｍｍ、目付は１６５ｇ／ｍ２、破断伸度は経方向２６４％、緯方向２９８％であった。
[Comparative Example 1]
In Example 1, instead of the sea-island type composite fiber multifilament, a false twisted crimped yarn 90 dtex / 288fil (manufactured by Teijin Fibers Ltd. Using a commercial polyurethane elastic yarn 22 dtex / 1fil (manufactured by Asahi Kasei Fibers Co., Ltd., Leica) drafted 2.2 times using a fiber diameter of 5.4 μm), a half structure (back: 10/12, A warp knitting machine having a half structure was obtained by a method of knitting by middle: 23/10, front: 10/23). Next, the wet fabric heat processing and dry heat processing were performed on the fabric raw machine.
In the obtained knitted fabric, the thickness was 0.48 mm, the basis weight was 165 g / m 2 , the breaking elongation was 264% in the warp direction and 298% in the weft direction.
次いで、得られた編物を６重量％のポリウレタン（大日本インキ化学工業（株）製；クリスボンＴＦ５０Ｐ）−ＤＭＦ溶液に浸漬させた後、繊維集合体表面の余分な溶液をかきとり、基体の厚さの９０％で絞った後、基体の圧縮が回復する前に、編物のバック組織面側に２０重量％のポリウレタン（大日本インキ化学工業（株）製；クリスボンＴＦ５０Ｐ）−ＤＭＦ溶液を４５０ｇ／ｍ２の目付でコーティングし、次いで水中に浸漬してポリウレタンを凝固させ、ＤＭＦを十分に洗浄除去した後、１２０℃で乾燥してポリウレタン多孔質層の形成された皮革様シートを得た。
かくして得られた皮革様シートにおいて、厚さは０．５５ｍｍ、目付は２６０ｇ／ｍ２、破断伸度は経方向１８５％、緯方向２２８％であったが、ソフト感は低く硬い風合い（１級）であった。また、ポリエチレンテレフタレートからなるマルチフィラメント糸の単繊維径は５．４μｍであり、ポリウレタン弾性糸の単繊維径は４５μｍであった。
Next, the obtained knitted fabric was dipped in a 6% by weight polyurethane (Dainippon Ink Chemical Co., Ltd .; Crisbon TF50P) -DMF solution, and then the excess solution on the surface of the fiber assembly was scraped off to obtain the thickness of the substrate. After squeezing at 90%, before the compression of the substrate recovers, 450 g / m of 20% by weight polyurethane (manufactured by Dainippon Ink & Chemicals, Inc .; Crisbon TF50P) -DMF solution is applied to the back structure side of the knitted fabric. After coating with a basis weight of 2 , and then dipping in water to solidify the polyurethane, DMF was thoroughly washed away, and dried at 120 ° C., a leather-like sheet with a polyurethane porous layer formed was obtained.
In the leather-like sheet thus obtained, the thickness was 0.55 mm, the basis weight was 260 g / m 2 , the breaking elongation was 185% in the warp direction and 228% in the weft direction, but the soft feeling was low and the hard texture (first grade) )Met. The single fiber diameter of the multifilament yarn made of polyethylene terephthalate was 5.4 μm, and the single fiber diameter of the polyurethane elastic yarn was 45 μm.
［実施例３］
実施例１と同様にフィラメント糸Ａ用糸条として海島型複合繊維マルチフィラメント５６ｄｔｅｘ／１０ｆｉｌを得た。
次いで、該海島型複合繊維マルチフィラメントを３本引き揃え７０回／ｍ（Ｓ方向）にて撚糸し、２８ゲージの通常の経編機を使用して、前述の海島型複合延伸糸の合撚糸をフロント筬に用い、ポリエチレンテレフタレートからなるマルチフィラメント（５６ｄｔｅｘ／１２ｆｉｌ、単繊維径２０．９μｍ）をバック筬に用い、サテン組織（バック：１０／２１、フロント：１０／４５による編方）によりサテン組織の経編生機を得た。
その後、該編物を実施例１と同様の方法で、湿熱処理、アルカリ減量加工、湿熱加工、乾熱加工を行った。この際のアルカリ減量率は２６％であった。
得られた編物を走査型電子顕微鏡ＳＥＭで編物表面および経断面を観察したところ、海成分は完全に溶解除去されており、編物に均一性に優れた超極細繊維（単繊維径が７００ｎｍのフィラメント糸Ａ）が含まれていることを確認した。得られた編物において、厚さは０．７０ｍｍ、目付は３２０ｇ／ｍ２、破断伸度は経方向６１％、緯方向７７％であった。
[Example 3]
In the same manner as in Example 1, a sea-island type composite fiber multifilament 56 dtex / 10 fill was obtained as the yarn for the filament yarn A.
Next, the sea-island type composite fiber multifilaments are aligned and twisted at 70 times / m (S direction), and the above-mentioned sea-island type composite drawn yarn is twisted using a 28-gauge ordinary warp knitting machine. Is used for the front heel, multifilament made of polyethylene terephthalate (56 dtex / 12fil, single fiber diameter 20.9 μm) is used for the back heel, and satin with satin structure (back: 10/21, front: 10/45 knitting) The organization's warp knitting machine was obtained.
Thereafter, the knitted fabric was subjected to wet heat treatment, alkali weight loss processing, wet heat processing, and dry heat processing in the same manner as in Example 1. The alkali weight loss rate at this time was 26%.
When the surface and cross section of the knitted fabric were observed with a scanning electron microscope SEM, the sea component was completely dissolved and removed, and the ultra-fine fibers (filament having a single fiber diameter of 700 nm) having excellent uniformity in the knitted fabric. It was confirmed that thread A) was included. The obtained knitted fabric had a thickness of 0.70 mm, a basis weight of 320 g / m 2 , a breaking elongation of 61% in the warp direction and 77% in the weft direction.
次いで、得られた編物を６重量％のポリウレタン（大日本インキ化学工業（株）製；クリスボンＴＦ５０Ｐ）−ＤＭＦ溶液に浸漬させた後、繊維集合体表面の余分な溶液をかきとり、基体の厚さの９０％で絞った後、基体の圧縮が回復する前に、編物のバック組織面側に２０重量％のポリウレタン（大日本インキ化学工業（株）製；クリスボンＴＦ５０Ｐ）−ＤＭＦ溶液を４５０ｇ／ｍ２の目付でコーティングし、次いで水中に浸漬してポリウレタンを凝固させ、ＤＭＦを十分に洗浄除去した後、１２０℃で乾燥してポリウレタン多孔質層の形成された皮革様シートを得た。
かくして得られた皮革様シートにおいて、厚さは０．８２ｍｍ、目付は４２３ｇ／ｍ２、破断伸度は経方向４３％、緯方向５６％であり、風合いは超極細繊維特有の柔らかくヌメリ感のある風合いはあったが、やや張り、反発感が強く、ややソフト感に欠ける（２級）ものであった。また、フィラメント糸Ａの単繊維径は７００ｎｍであり、ポリエチレンテレフタレートからなるマルチフィラメントの単繊維径は２０．９μｍであった。
Next, the obtained knitted fabric was dipped in a 6% by weight polyurethane (Dainippon Ink Chemical Co., Ltd .; Crisbon TF50P) -DMF solution, and then the excess solution on the surface of the fiber assembly was scraped off to obtain the thickness of the substrate. After squeezing at 90%, before the compression of the substrate recovers, 450 g / m of 20% by weight polyurethane (manufactured by Dainippon Ink & Chemicals, Inc .; Crisbon TF50P) -DMF solution is applied to the back structure side of the knitted fabric. After coating with a basis weight of 2 , and then dipping in water to solidify the polyurethane, DMF was thoroughly washed away, and dried at 120 ° C., a leather-like sheet with a polyurethane porous layer formed was obtained.
The leather-like sheet thus obtained has a thickness of 0.82 mm, a basis weight of 423 g / m 2 , a breaking elongation of 43% in the warp direction and 56% in the weft direction, and the texture is soft and slimy unique to ultrafine fibers. Although there was a certain texture, it was somewhat tight, strongly repelled, and slightly lacked in softness (2nd grade). Moreover, the single fiber diameter of the filament yarn A was 700 nm, and the single fiber diameter of the multifilament made of polyethylene terephthalate was 20.9 μm.
本発明によれば、ソフトな風合いを有し、かつストレッチ性に優れた皮革様シートおよび衣料が提供され、その工業的価値は極めて大である。 ADVANTAGE OF THE INVENTION According to this invention, the leather-like sheet | seat and clothing which have a soft texture and were excellent in stretch property are provided, The industrial value is very large.
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| JPS60139879A (en) * | 1983-12-28 | 1985-07-24 | Toray Ind Inc | Production of artificial leather sheet |
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| JP4100327B2 (en) * | 2002-10-30 | 2008-06-11 | 東レ株式会社 | Composite fiber |
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| JP2009161883A (en) * | 2008-01-08 | 2009-07-23 | Teijin Fibers Ltd | Method for producing fabric and resultant fabric, and textile product comprising the same |
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