JPH1060782A - Synthetic leather - Google Patents
Synthetic leatherInfo
- Publication number
- JPH1060782A JPH1060782A JP8218695A JP21869596A JPH1060782A JP H1060782 A JPH1060782 A JP H1060782A JP 8218695 A JP8218695 A JP 8218695A JP 21869596 A JP21869596 A JP 21869596A JP H1060782 A JPH1060782 A JP H1060782A
- Authority
- JP
- Japan
- Prior art keywords
- elastic
- fibers
- synthetic leather
- fabric
- polyurethane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、衣料、産業用資材
として使用できる高伸縮弾性合成皮革及びその製造方法
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high elastic elastic synthetic leather which can be used as clothing and industrial materials, and a method for producing the same.
【０００２】[0002]
【従来の技術】合成繊維、再生繊維、又は天然繊維等の
布帛を基布として使用して、起毛処理の後の基布にポリ
ウレタン溶液をコーテイング乃至含浸して、水等の中で
ポリウレタンを凝固、固化して合成皮革、通気性布帛を
製造する方法が知られている。この場合基布として用い
る布帛は、編み、織り等の汎用の布帛形成手段を用いて
ナイロン等の合成繊維、綿、レーヨン等の弾性伸縮性の
ない繊維からなる布帛に限られていた。昨今では、ファ
ッシン性、快適性に富み、伸縮性の布帛素材の要求が多
く、合成皮革素材の分野でもより高度な伸縮弾性を有す
る素材が要望されている。2. Description of the Related Art Using a fabric such as synthetic fiber, regenerated fiber or natural fiber as a base cloth, the base cloth after the raising treatment is coated or impregnated with a polyurethane solution to coagulate the polyurethane in water or the like. A method for producing a synthetic leather or a breathable fabric by solidification is known. In this case, the cloth used as the base cloth is limited to a cloth made of synthetic fibers such as nylon or fibers having no elasticity such as cotton or rayon using a general-purpose cloth forming means such as knitting or weaving. In recent years, there are many demands for stretchable fabric materials which are rich in fashionability and comfort, and materials having higher stretch elasticity are also demanded in the field of synthetic leather materials.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、伸縮性の充
分に大きな、軽く、柔らかく、快適性に富む高伸縮弾性
合成皮革の提供を目的とするものである。SUMMARY OF THE INVENTION An object of the present invention is to provide a highly stretchable elastic synthetic leather that is sufficiently large in elasticity, light, soft and comfortable.
【０００４】[0004]
【課題を解決するための手段】本発明の目的は、基布層
が弾性繊維と非弾性繊維（硬性繊維）とが混用された布
帛構造体で形成され、前記基布層の少なくとも一方の面
側の断面で布帛構造構成繊維の間隙にポリウレタン凝固
体相の充填層が形成され、前記ポリウレタン凝固体相の
充填層が介在する布帛構造体の断面において弾性繊維が
実質的にその弾性伸長性を維持し、かつ前記弾性繊維の
少なくとも一部が前記ポリウレタン凝固体相との間に空
隙構造を形成していることを特徴とする高伸縮弾性合成
皮革によって達成することができる。SUMMARY OF THE INVENTION An object of the present invention is to provide a base fabric layer formed of a fabric structure in which elastic fibers and inelastic fibers (hard fibers) are mixed, and at least one surface of the base fabric layer. A filling layer of the polyurethane coagulated phase is formed in the gap between the constituent fibers of the fabric structure in the cross section on the side, and the elastic fiber substantially exhibits its elastic extensibility in the cross section of the fabric structure in which the filling layer of the coagulated polyurethane phase is interposed. This can be achieved by a highly stretchable elastic synthetic leather, wherein the elastic fiber is maintained and at least a part of the elastic fiber forms a void structure with the polyurethane coagulated body phase.
【０００５】そして、かかる高伸縮弾性合成皮革は、弾
性繊維と非弾性繊維とを混用して形成される基布を、該
基布の布帛構造を組織する弾性繊維の表面をマスクする
手段を適用した後、ポリウレタン溶液で飽充し、次いで
前記飽充溶液中のポリウレタンを凝固させることによっ
て調製することができる。本発明の高伸縮弾性合成皮革
は、従来にない伸縮性に富んだものであり、その伸縮性
は、例えば、従来合成皮革では不可能であった細身のパ
ンツ、タイトなスカートを製作でき、ボタン、ジッパー
を省いても、着脱ができる腰部位を絞ったワンピース等
の製作を可能にする程優れた伸縮弾性を呈する布帛素材
である。ファッション性の高い合成皮革材として従来の
合成皮革に類例のない合成皮革である。[0005] Such high-stretch elastic synthetic leather employs means for masking the surface of an elastic fiber that organizes the fabric structure of the base fabric formed by mixing elastic fibers and inelastic fibers. After that, it can be prepared by filling with a polyurethane solution and then coagulating the polyurethane in said filling solution. The high elastic elastic synthetic leather of the present invention is rich in elasticity that has never been seen before, and its elasticity is, for example, thin pants and tight skirts that were impossible with conventional synthetic leather. This is a fabric material exhibiting excellent elasticity and elasticity enough to enable the production of a dress or the like with a narrowed waist portion that can be attached and detached even if the zipper is omitted. It is a synthetic leather that is unique to conventional synthetic leather as a synthetic leather material with high fashionability.
【０００６】本発明の高伸縮弾性合成皮革は、前記の合
成皮革構造の故に、布の布帛構造中の弾性繊維の特徴を
最高度に発揮せしめて、軽量で、柔軟、ドレープ性に富
んだ性能を有しているので、肘、膝、腰まわり等運動の
激しい部位においても、着圧力の緩和されたタイトで、
ファッション性に富んだ被服の製作に、又引きつれ、ず
りあがりの軽減された身体にフィットした被服の製作に
好都合な衣料素材としての用いることができる。[0006] The high elastic elastic synthetic leather of the present invention, by virtue of the above-mentioned synthetic leather structure, makes the most of the characteristics of the elastic fiber in the fabric structure of the cloth, and is lightweight, flexible and drapable. Because it has, even in areas where exercise is intense such as elbows, knees, hips, etc., tight wearing pressure is relaxed,
It can be used as a garment material that is convenient for the production of fashion-rich clothing and for the production of clothing that fits the body with reduced dragging and slipping.
【０００７】本発明の高伸縮弾性合成皮革は、基布が弾
性繊維を含みそれ自体伸縮弾性を有する布帛構造物で構
成され、基布の布帛構造の少なくとも一方の面にポリウ
レタンエラストマ−凝固相の充填相を形成したものであ
る。本発明の合成皮革はポリウレタンエラトマ−充填層
が弾性繊維の溶剤を使用する湿式合成皮革によるにも係
わらず、基布の布帛構造体を形成している弾性繊維がそ
の弾性伸長性を実質的に維持し、かつその少なくとも一
部が前記ポリウレタン凝固体相との間に空隙構造を形成
しているので、基布の弾性布帛構造の伸縮弾性性能が実
質的に失われることがない。すなわち本発明の合成皮革
の構造は、エラストマー凝固相の充填工程で基布を組織
している伸縮弾性繊維の繊維構造が破壊されて、その弾
性伸長性が失れることがないので、基布の布帛構造を弾
性繊維の特徴を最高度に発揮でき、柔軟で、軽量で、ま
たドレープ性に富んだ合成皮革を製造することができ
る。The high-stretch elastic synthetic leather of the present invention comprises a fabric structure in which a base fabric contains elastic fibers and has elasticity in itself, and a polyurethane elastomer-coagulated phase is formed on at least one surface of the fabric structure of the base fabric. It is one in which a packed phase is formed. In the synthetic leather of the present invention, although the polyurethane elastomer-filled layer is made of wet synthetic leather using a solvent for the elastic fiber, the elastic fiber forming the fabric structure of the base fabric substantially increases its elastic extensibility. , And at least a part thereof forms a void structure with the coagulated polyurethane phase, so that the elasticity and elasticity of the elastic fabric structure of the base fabric are not substantially lost. That is, the structure of the synthetic leather of the present invention is such that the fiber structure of the stretchable elastic fibers forming the base fabric is not destroyed in the filling step of the elastomer solidification phase, and the elastic extensibility thereof is not lost. The fabric structure can exhibit the characteristics of elastic fibers to the highest degree, and it is possible to produce a soft, lightweight, and drape-rich synthetic leather.
【０００８】本発明の高伸縮弾性合成皮革を構成する基
布は、ゴム弾性伸縮性を有するいわゆる弾性繊維と汎用
天然繊維又は汎用化合繊繊維（以下、非弾性繊維若しく
は硬性繊維と総称する）を混用して調製され、代表的に
は編織物、不織布形態の布帛構造体である。ここで弾性
繊維は、繊維素材そのものが裸のままで弾性を示す繊維
をいい、ベアのゴムフィラメンット、ベアのポリウレタ
ンウレアのフィランメント、ポリエーテルエステルフィ
ラメント等がその代表例である。実用上、破断強度が少
なくとも１／ｄ、破断伸度が少なくとも２００％、好ま
しくは３００％の弾性繊維の使用が高度の弾性伸長弾性
合成皮革を得る上で好ましい。[0008] The base fabric constituting the high elastic elastic synthetic leather of the present invention comprises so-called elastic fibers having rubber elasticity and general-purpose natural fibers or general-purpose synthetic fibers (hereinafter collectively referred to as inelastic fibers or hard fibers). It is a knitted woven fabric or a nonwoven fabric type fabric structure which is prepared by mixing. Here, the elastic fiber refers to a fiber which shows elasticity when the fiber material itself is bare, and examples thereof include bare rubber filament, bare polyurethaneurea filament, and polyetherester filament. In practice, the use of elastic fibers having a breaking strength of at least 1 / d and a breaking elongation of at least 200%, preferably 300% is preferred for obtaining a highly elastic and elastic elastic leather.
【０００９】一方、非弾性繊維は、あらゆる衣服繊維素
材、産業用繊維資材として、常用される繊維素材、すな
わち天然繊維、化学繊維 合成繊維である。天然繊維に
あっては、木綿、羊毛、絹等、化学繊維にあってはアセ
テート繊維、ビスースレーヨン繊維、キュプラレーヨン
繊維等、合成繊維にあってはナイロン、ポリエステル、
アクリル繊維の３大合成繊維他ポリオレフィン繊維、ビ
ニロン等凡そ紡織繊維素材と用いることができるあらゆ
る繊維を含む。これらの繊維は、紡績糸、長繊維糸、場
合によってはモノフィラメントの形態で用いることもで
きる。合成皮革の表面にシボ模様を顕著に形成するため
には、非弾性繊維の少なくとも非弾性繊維の５０重量％
がセルロース繊維であることが好ましいく、特にキュプ
ラアンモニウムレーヨンの使用が美麗で、繊細なシボ模
様を形成する上で好ましい。On the other hand, inelastic fibers are fiber materials commonly used as all kinds of clothing fiber materials and industrial fiber materials, that is, natural fibers and synthetic fibers. For natural fibers, cotton, wool, silk, etc., for chemical fibers, acetate fibers, viscose rayon fibers, cupra rayon fibers, etc. For synthetic fibers, nylon, polyester,
It includes all kinds of fibers that can be used as a roughly woven fiber material such as polyolefin fiber, vinylon, and other three large synthetic fibers of acrylic fiber. These fibers can also be used in the form of spun yarns, long fiber yarns and, in some cases, monofilaments. In order to form a grain pattern remarkably on the surface of the synthetic leather, at least 50% by weight of the inelastic fiber is used.
Is preferably a cellulose fiber, and the use of cupra ammonium rayon is particularly preferable for forming a beautiful and delicate grain pattern.
【００１０】弾性繊維と非弾性繊維とが混用された基布
用布帛は、既知方法によって調製することができる。基
布を編物で構成するる場合は、弾性糸を伸長下にトリコ
ット機等の経編機若しくは緯編機、丸編機の所定の選択
された各ガイド孔に供給しつつ、非弾性繊維の紡績糸若
しくは長繊維糸等を供給し所望の組織に編成することで
調製することができる。弾性糸芯のコアヤ−ン、弾性芯
カバーヤ−ンもガイド編機に給糸して基布布帛として用
いることができ、又弾性糸／非弾性糸の交編布帛の各種
の変形技術を用いて基布用編地を調製することもでき
る。[0010] A fabric for a base cloth in which elastic fibers and non-elastic fibers are mixed can be prepared by a known method. When the base fabric is composed of a knitted fabric, the elastic yarn is supplied to a predetermined selected guide hole of a warp knitting machine or a weft knitting machine such as a tricot machine or a circular knitting machine under elongation, and the inelastic fiber is formed. It can be prepared by supplying spun yarn or long fiber yarn and knitting into a desired structure. The core yarn of the elastic yarn core and the cover yarn of the elastic core can be fed to the guide knitting machine and used as the base fabric, and various deformation techniques of the cross-knitted fabric of the elastic yarn / inelastic yarn can be used. A knitted fabric for a base fabric can also be prepared.
【００１１】基布を織物で構成する場合は、経糸に前記
の非弾性繊維の糸を使用し、緯糸に弾性繊維フィラメン
トを伸長下に非弾性繊維の糸引き揃えた合糸又は弾性糸
芯コアヤアーン若しくはカバーヤーンを用いて調製する
のが一般的である。基布が不織構造布帛である場合は、
伸長下にシート状に配列した弾性糸群をサンドイッチし
て、その両側面に非弾性繊維の不織シート乃至はウエブ
を積層しステッチボンド、接着法等により布帛の構造を
固定する等既知の弾性不織布構造のシートの製法を適用
して調製することができる。When the base fabric is made of a woven fabric, the above-mentioned inelastic fiber yarn is used for the warp, and the elastic fiber filament is stretched for the weft while the inelastic fiber is drawn under elongation. Alternatively, it is generally prepared using a cover yarn. When the base fabric is a non-woven fabric,
A known elastic non-woven fabric such as sandwiching a group of elastic yarns arranged in a sheet shape under elongation, laminating a non-woven sheet or web of inelastic fibers on both sides thereof, and fixing the structure of the fabric by stitch bonding, an adhesive method or the like. It can be prepared by applying the manufacturing method of the sheet having the structure.
【００１２】弾性繊維と非弾性繊維との混用割合は、最
終製品が目標とする合成皮革に求められる伸縮弾性性能
と合成皮革に要求される機械的強度、柔らかさやしなや
かさを考慮して、適宜決定することができるが、合成皮
革の基布を形成する布帛の組織構造にも依存する。基布
の布帛組織が編物である場合は、編物組織自体が伸長弾
性を有するので、さまざまな混用率で多様な伸長弾性を
有する基布を調製することができる。一般に、弾性繊維
の混用率は基布の重量の２重量％より大きく、多くとも
５０重量％を越えない。伸縮性が特に求められる合成皮
革では、編物基布の繊維素材は、弾性繊維が好ましくは
１０〜４０重量％程度の比較的高い混用率で構成されて
いることが必要である。The mixing ratio of the elastic fiber and the non-elastic fiber is appropriately determined in consideration of the elasticity and elasticity required for the synthetic leather and the mechanical strength and softness and suppleness required for the synthetic leather. Although it can be determined, it also depends on the structure of the fabric forming the base fabric of the synthetic leather. When the fabric structure of the base fabric is a knitted fabric, the knitted fabric itself has elongation elasticity, so that a base fabric having various elongation elasticities at various mixing ratios can be prepared. Generally, the mixing ratio of the elastic fibers is more than 2% by weight of the weight of the base fabric, and does not exceed at most 50% by weight. In synthetic leather, which is particularly required to have elasticity, it is necessary that the fiber material of the knitted base fabric is composed of a relatively high mixing ratio of elastic fibers, preferably about 10 to 40% by weight.
【００１３】一方、基布が織物である場合、基布織物は
緯糸弾性繊維糸用いて織られているのが一般的で、編物
の基布に比べて弾性収縮性が小さい。織物基布の繊維素
材は、弾性繊維が５〜１０重量％程度の混用率で構成さ
れているのが好ましい。以上のようにして調製された基
布用布帛は、そのまま基布として用いることができるが
片面若しくは両面起毛処理を施して基布として使用され
る。基布は、必要に応じて染色加工してもよいことはい
うまでもない。On the other hand, when the base fabric is a woven fabric, the base fabric is generally woven using weft elastic fiber yarns, and has a lower elastic shrinkage than a knitted base fabric. It is preferable that the fiber material of the woven fabric is composed of elastic fibers at a mixing ratio of about 5 to 10% by weight. The fabric for a base fabric prepared as described above can be used as a base fabric as it is, but is used as a base fabric after a single- or double-sided raising treatment. It goes without saying that the base fabric may be dyed if necessary.
【００１４】本発明の合成皮革構造は、基布にポリウレ
タンエラストマーの溶液をコーテング法若しくは浸漬法
を適用して塗布乃至飽充して、次いで基布に担持飽充填
されたポリウレタンエラストマー溶液を例えば水に接触
せしめてポリウレタンエラストマーを凝固させ、基布の
布帛構造の断面の組織内にポリウレタンエラストマー凝
固相を充填沈積させることにより形成される。According to the synthetic leather structure of the present invention, a polyurethane elastomer solution is applied to a base fabric by applying a coating method or a dipping method, and then the base fabric is filled with the polyurethane elastomer solution. The polyurethane elastomer is solidified by contacting the polyurethane elastomer, and the polyurethane elastomer solidified phase is filled and deposited in the cross-sectional structure of the fabric structure of the base fabric.
【００１５】合成皮革構造を形成させるにあたって、基
布の布帛構造を組織する弾性繊維の表面をマスクする手
段を適用した後、ポリウレタン溶液を凝固させる方法を
適用することで、基布組織内のポリウレタン凝固体充填
層領域で、弾性繊維の少なくとも一部が空隙を介して前
記ポリウレタン凝固体充填層内に埋め込まれて存在する
前述の合成皮革構造が形成される。In forming the synthetic leather structure, a method of masking the surface of the elastic fiber that organizes the fabric structure of the base fabric is applied, and then a method of coagulating the polyurethane solution is applied, whereby the polyurethane in the base fabric structure is applied. In the coagulated body filling layer region, the above-described synthetic leather structure is formed in which at least a part of the elastic fiber is embedded in the polyurethane coagulated body filling layer through a void.
【００１６】ここで、合成皮革構造は、ポリウレタンエ
ラストマー凝固相が基布構造の断面全体に層形成せしめ
られていても、基布の起毛表面側を被覆して基布の断面
の起毛側の一部に形成してもよいが、柔軟で、軽くより
高い伸縮弾性の構造を形成するためには、後者のごとく
ポッリウレタンエラスト層が裏抜けしていないものであ
ることが好ましい。Here, the synthetic leather structure covers the raised surface side of the base cloth and forms one side of the raised side of the cross section of the base cloth even if the polyurethane elastomer solidified phase is formed on the entire cross section of the base cloth structure. However, in order to form a flexible, light, and highly elastic structure, it is preferable that the polyurethane elastomer layer does not strike through as in the latter case.
【００１７】合成皮革構造の形成には、ポリウレタンエ
ラストマー溶液による基布の一連の加工処理において、
基布の布帛組織内でポリウレタンエラストマーが特に弾
性繊維との間で空隙を形成して沈積充填し、かつポリウ
レタンエラストマ−の溶剤、例えばジメチルホルムアミ
ド、ジメチルアセタミド等に因る弾性繊維の劣化乃至破
壊が実質的に抑制される条件を満足する加工方法を適用
することが肝要である。In the formation of the synthetic leather structure, a series of processing treatments of the base fabric with the polyurethane elastomer solution is performed.
In the fabric structure of the base fabric, the polyurethane elastomer forms voids particularly with the elastic fibers, deposits and fills, and deteriorates the elastic fibers due to the solvent of the polyurethane elastomer, such as dimethylformamide, dimethylacetamide and the like. It is important to apply a processing method that satisfies the conditions under which fracture is substantially suppressed.
【００１８】その加工方法の一つは、基布をポリウレタ
ン溶液でコーテング若しくは浸漬するにあたって、基布
に混用されている弾性繊維がポリウレタン弾性繊維であ
る場合には、その弾性繊維の形成に用いられる溶剤より
も溶解性の低い溶剤を用いて調製されたポリウレタンエ
ラストマー溶液を用いる加工方法である。例えば、ジメ
チルアセトアミドを溶剤に用いる紡糸により製造された
ポリウレタン弾性繊維を用いた弾性基布を用いて合成皮
革を製造する場合、ジメチルホルムアルデヒドを溶剤に
用いるポリウレタンエラストマー溶液を合成皮革構造形
加工に用いて、基布の布帛構造を構成するポリウレタン
弾性繊維劣化乃至破壊を回避することができる。One of the processing methods is used for forming or immersing the base fabric in the case where the base fabric is coated or immersed in a polyurethane solution and the elastic fiber mixed with the base fabric is a polyurethane elastic fiber. This is a processing method using a polyurethane elastomer solution prepared using a solvent having lower solubility than the solvent. For example, when manufacturing synthetic leather using an elastic base fabric using polyurethane elastic fibers manufactured by spinning using dimethylacetamide as a solvent, a polyurethane elastomer solution using dimethylformaldehyde as a solvent is used for synthetic leather structural processing. In addition, deterioration or destruction of the polyurethane elastic fiber constituting the fabric structure of the base cloth can be avoided.
【００１９】その加工法の二つは、ポリウレタンエラス
トマーの溶液の付与、凝固沈積の工程中、基布の布帛組
織を構成する弾性繊維の表面をマスクする手段を適用す
る加工方法である。次のマスク手段が好ましい例として
挙げられる。 （１）ポリウレタンエラストマー溶液の付与に先立っ
て、基布に水等の弾性繊維に不活性の溶媒を浸漬法、パ
デイング法等により飽充させる。この不活性溶媒に溶解
性の高分子を溶解した溶液（例えば、ＰＶＡ水溶液）を
併用することもできる。 （２）ポリウレタンエラストマー溶液の付与に先立っ
て、撥水若しくは撥油処理を適用する。汎用されている
撥水（撥油）処理加工法がこの方法に適用できる。The two processing methods are processing methods in which a means for masking the surface of elastic fibers constituting the fabric structure of the base fabric is applied during the steps of applying and coagulating and depositing a polyurethane elastomer solution. The following mask means is a preferred example. (1) Prior to the application of the polyurethane elastomer solution, the base cloth is saturated with an inert solvent such as water in an elastic fiber by a dipping method, a padding method, or the like. A solution in which a soluble polymer is dissolved in the inert solvent (for example, an aqueous PVA solution) may be used in combination. (2) Prior to applying the polyurethane elastomer solution, a water-repellent or oil-repellent treatment is applied. A commonly used water-repellent (oil-repellent) treatment method can be applied to this method.
【００２０】これらのマスク手段の適用は、基布を構成
する弾性繊維がポリウレタン弾性繊維の場合、その繊維
形成に用いられる溶剤よりも溶解性の低い溶剤を用いる
ことで省くこともできる。以上の如く合成皮革構造を形
成した後、合成皮革の表面を更に既知の加工を付加適用
してヌバック、スエード調等の所望の外観をもった合成
皮革を得ることができる。In the case where the elastic fibers constituting the base cloth are polyurethane elastic fibers, the application of these mask means can be omitted by using a solvent having a lower solubility than the solvent used for forming the fibers. After the synthetic leather structure is formed as described above, the surface of the synthetic leather is further subjected to known processing to obtain a synthetic leather having a desired appearance such as nubuck or suede.
【００２１】[0021]
【実施例】本発明の着想を具体的に説明するが、以下に
示す実施例により本発明が限定されるものではない。実
施例中、合成皮革の評価試験は以下の方法によりもので
ある。 （１）合成皮革等の伸度の測定方法 インストロン機を用いて、幅３．０ｃｍの短冊状のサン
プル片に、長手方向に平行に２．２５ｋｇの荷重をかけ
て、その伸度を測定した。 （２）伸縮処理 デマッチア式伸縮試験機を用いて、５．０ｃｍ幅のサン
プル片の最大伸度１００％で５０００回繰り返し伸縮し
た。 （３）合成皮革の品位の評価 表面の凹凸を程度、凹凸面と広がりを目視により判定し
たし、以下の評価基準により品位を５段階に格付けた。DESCRIPTION OF THE PREFERRED EMBODIMENTS The concept of the present invention will be specifically described, but the present invention is not limited by the following embodiments. In the examples, the evaluation test of the synthetic leather is performed by the following method. (1) Method of measuring elongation of synthetic leather etc. Using an Instron machine, a load of 2.25 kg was applied to a strip-shaped sample piece having a width of 3.0 cm in parallel with the longitudinal direction, and the elongation was measured. did. (2) Expansion / contraction treatment A sample piece having a width of 5.0 cm was repeatedly expanded and contracted 5000 times at a maximum elongation of 100% using a dematcher type expansion / contraction tester. (3) Evaluation of Quality of Synthetic Leather The degree of unevenness on the surface, the uneven surface and the spread were visually determined, and the quality was rated on a five-point scale according to the following evaluation criteria.
【００２２】 ５ 表面に凹凸がなく平滑性良好 ４ 表面に微小な凹凸が観測される（凹凸部面積概
ね５％以下） ３ 表面の凹凸が目立つ（凹凸部面積概ね１０％以
下） ２ 凹凸部面積概ね５０％ １ 前面凹凸 （４）合成皮革のカール性の評価 合成皮革サンプル（縦／横：１０ｃｍ／１０ｃｍ）をガ
ラス板に載置して、サンプル端に顕れる反りの接線が平
面となす角度求めた（角度０°が最良）。 〔実施例 １〕ポリウレタン弾性繊維フィラメント（２
０ｄ）を後筬に、ナイロン６６のマルチフィラメント糸
（４０ｄ／１３ｆ）前筬に用いて、２８ゲージのハーフ
組織で弾性トリコット編地（混用率：ポリウレタン弾性
繊維４０重量％）を編成した。この編地を染色、起毛処
理して、合成皮革用基布を得た。この基布に、起毛面と
は反対面に綿布を貼付け、以後の合成皮革加工工程にお
ける基布の寸法安定性を確保した。5 Good smoothness without unevenness on the surface 4 Fine unevenness is observed on the surface (approximately 5% or less of unevenness area) 3 Surface unevenness is conspicuous (approximately 10% or less area of unevenness) 2 Area of unevenness Approximately 50% 1 Unevenness on the front side (4) Evaluation of curl property of synthetic leather A synthetic leather sample (length / width: 10 cm / 10 cm) is placed on a glass plate, and the angle at which the tangent of the warp appearing at the sample end forms a plane is determined. (An angle of 0 ° is best). [Example 1] Polyurethane elastic fiber filament (2
Using 0d) as a rear reed and a nylon 66 multifilament yarn (40d / 13f) front reed, an elastic tricot knitted fabric (mixing rate: polyurethane elastic fiber of 40% by weight) was knitted with a half structure of 28 gauge. The knitted fabric was dyed and raised to obtain a base fabric for synthetic leather. A cotton cloth was stuck to this base cloth on the side opposite to the raised surface to ensure the dimensional stability of the base cloth in the subsequent synthetic leather processing step.
【００２３】なお、ここで用いたポリウレタン弾性繊維
フィラメントは、ポリテトラメチレンエールグリコール
と過剰量の４、４’−ジフェニルメタンジイソシアネー
トからプレポリマーを得、ジメチルアセトアミドに溶解
したあと、これをエチレンジアミンで鎖延長して得られ
たポリウレタン溶液を乾式紡糸することによって得られ
たものである。The polyurethane elastic fiber filaments used here were obtained from polytetramethylene glycol and an excess amount of 4,4'-diphenylmethane diisocyanate, dissolved in dimethylacetamide, and then chain-extended with ethylenediamine. This is obtained by dry spinning the polyurethane solution obtained as described above.
【００２４】この基布を水に浸漬して基布組織に水を充
分に飽充させた後、合成皮革製造のコーテンイグ用ポリ
ウレタンのジメチルホルムアミド溶液（ポリウレタン４
０重量％）を基布の起毛面にコーテング（１２０ｇ／ｍ
2 ）した。コーテングした基布を水浴に通して、含浸ポ
リウレタン溶液の脱溶剤、ポリウレタンの凝固させ、起
毛面側の基布組織の繊維間隙にポリウレタンの傾斜充填
層が形成された合成皮革（３００ｇ／ｍ2 ）を得た。得
られた合成皮革の諸物性と合成皮革の品位評価結果を表
１にまとめて示す。 〔比較例 １〕実施例１で得た基布を用い、基布の基布
組織への水による飽充処理を省いて、実施例１と同じく
方法、条件を用いてポリウレタン溶液処理、脱溶剤、凝
固所期を適用し、比較対照の合成皮革を調製した。得ら
れた合成皮革の諸物性と合成皮革の品位評価結果を表１
にまとめて示す。After the base cloth is immersed in water to sufficiently fill the base cloth with water, a dimethylformamide solution (polyurethane 4) of polyurethane for coaten ig for producing synthetic leather is prepared.
0% by weight) on the brushed surface of the base cloth (120 g / m2).
2 ) I did. The coated base cloth is passed through a water bath to remove the solvent of the impregnated polyurethane solution and solidify the polyurethane, and a synthetic leather (300 g / m 2 ) having an inclined filling layer of polyurethane formed in the fiber gap of the base cloth structure on the raised side. I got Table 1 summarizes various physical properties of the obtained synthetic leather and evaluation results of the quality of the synthetic leather. [Comparative Example 1] Using the base fabric obtained in Example 1 and omitting the process of filling the base fabric structure with water with water, using the same method and conditions as in Example 1, treating with a polyurethane solution and removing the solvent. The coagulation stage was applied to prepare a comparative synthetic leather. Table 1 shows the physical properties of the obtained synthetic leather and the evaluation results of the quality of the synthetic leather.
Are shown together.
【００２５】[0025]
【表１】 [Table 1]
【００２６】〔比較例 ２〕実施例１で調製された基布
を用い、コーテイング溶液のポリウレタンの溶剤をジメ
チルホルムアミドに替えて、ジメチルアセトアミドを用
いた他は、実施例１の方法、条件を繰り返して合成皮革
を得た。 〔実施例 ２〕実施例１で用いたポリウレタン弾性繊維
（２０ｄ）を後筬に、キュプラ長繊維糸４０ｄを前筬に
用いて、ハーフ組織のトリコットを、実施例１と同様の
条件で編成した。この交編トリコットを染色、次いで起
毛処理して弾性編物の基布（１５０ｇ／ｍ2 ）を調製し
た。この基布を水に浸漬して、基布組織中に水を充分に
飽充せしめ、更に起毛面の反対側の面側に綿布をラミネ
ートして、基布に寸法安定性を与えた。Comparative Example 2 The procedure and conditions of Example 1 were repeated except that the base cloth prepared in Example 1 was used, and dimethylacetamide was used instead of dimethylformamide as the solvent for the polyurethane of the coating solution. To obtain synthetic leather. [Example 2] A tricot having a half structure was knitted under the same conditions as in Example 1 using the polyurethane elastic fiber (20d) used in Example 1 for the rear reed and the cupra long fiber yarn 40d for the front reed. . The mixed knitted tricot was dyed and then brushed to prepare an elastic knitted fabric (150 g / m 2 ). This base cloth was immersed in water to sufficiently fill the base cloth with water, and a cotton cloth was laminated on the side opposite to the raised surface to give dimensional stability to the base cloth.
【００２７】このように調製したラミネートを、実施例
１と同じ条件で水浸漬処理による基布の飽充処理を経て
起毛面側の面にウレタン溶液をコーテング（１２０ｇ／
ｍ2）を適用し、合成皮革中間製品を得た。この合成皮
革のコーテング適用面に更にポリウレタンフィルム（１
０ミクロン）をラミネートし、次いで液流れ染色機を用
いてシボ立て処理し、乾燥して、前記の綿布を剥離して
合成皮革（２７０ｇ／ｍ2 ）を得た。得られた合成皮革
の諸物性と合成皮革の品位評価結果を表２にまとめて示
す。 〔比較例 ３〕ウレタンエラストマー溶液のコーテング
先立つ水浸漬処理を省いて、ウレタンーテングを適用す
る他は、実施例４を繰り返して、合成皮革を得た。得ら
れた合成皮革の諸物性と合成皮革の品位評価結果を表２
にまとめて示す。The laminate thus prepared was subjected to a treatment for filling the base fabric by water immersion under the same conditions as in Example 1, and then a urethane solution was coated on the raised surface side (120 g /
m 2 ) was applied to obtain a synthetic leather intermediate product. A polyurethane film (1
0 micron), and then subjected to a crimping treatment using a liquid flow dyeing machine, dried, and peeled off the cotton cloth to obtain a synthetic leather (270 g / m 2 ). Table 2 summarizes various physical properties of the obtained synthetic leather and evaluation results of the quality of the synthetic leather. [Comparative Example 3] Synthetic leather was obtained by repeating Example 4 except that the water immersion treatment prior to coating of the urethane elastomer solution was omitted and urethane-engaging was applied. Table 2 shows the physical properties of the obtained synthetic leather and the evaluation results of the quality of the synthetic leather.
Are shown together.
【００２８】[0028]
【表２】 [Table 2]
【００２９】[0029]
【発明の効果】本発明の合成皮革は、弾性繊維と非弾性
繊維を混用した基布布帛構造体の弾性繊維が実質的にそ
の弾性伸長性を維持し、かつその少なくとも一部が前記
ポリウレタン凝固体相との間に空隙構造を形成している
ので、基布の弾性布帛構造の伸縮弾性性能を実質的に失
うことのない、高伸縮弾性合成皮革を得ることができ
る。湿式の合成皮革製造過程で溶剤による基布布帛構造
体を形成している弾性繊維が破壊され、その弾性伸長性
が失れることがないので、基布の布帛構造を弾性繊維の
特徴を最高度に発揮でき、柔軟で、軽量で、またドレー
プ性に富んだ合成皮革を提供することができる。According to the synthetic leather of the present invention, the elastic fibers of the base fabric structure in which the elastic fibers and the non-elastic fibers are mixed substantially maintain their elastic extensibility, and at least a part of the elastic fibers is coagulated with the polyurethane. Since a void structure is formed between the base fabric and the body, high stretch elastic synthetic leather can be obtained without substantially losing the stretch elastic performance of the elastic fabric structure of the base fabric. In the wet synthetic leather manufacturing process, the elastic fibers forming the base fabric structure due to the solvent are destroyed and their elastic extensibility is not lost. The present invention can provide a synthetic leather which is soft, lightweight, and drape-rich.
Claims (6)
維）とが混用された布帛構造体で形成され、前記基布層
の少なくとも一方の面側の断面で布帛構造構成繊維の間
隙にポリウレタン凝固体相の充填層が形成され、前記ポ
リウレタン凝固体相の充填層が介在する布帛構造体の断
面において弾性繊維が実質的にその弾性伸長性を維持
し、かつ前記弾性繊維の少なくとも一部が前記ポリウレ
タン凝固体相との間に空隙構造を形成していることを特
徴とする高伸縮弾性合成皮革。The base fabric layer is formed of a fabric structure in which elastic fibers and inelastic fibers (hard fibers) are mixed, and a gap between fibers constituting the fabric structure in a cross section on at least one surface side of the base fabric layer. A filled layer of the polyurethane coagulated phase is formed in the fabric structure, the elastic fiber substantially maintains its elastic extensibility in a cross section of the fabric structure in which the filled layer of the polyurethane coagulated phase is interposed, and at least one of the elastic fibers A highly stretchable elastic synthetic leather, wherein the portion forms a void structure between the polyurethane coagulated body phase and the solidified polyurethane.
革断面と一方面にのみ形成されてなることを特徴とする
請求項１記載の高伸縮弾性合成皮革。2. The highly elastic elastic synthetic leather according to claim 1, wherein the filled layer of the coagulated polyurethane phase is formed only on the cross section of the synthetic leather and on one side.
項１記載の高伸縮弾性合成皮革。3. The highly elastic elastic synthetic leather according to claim 1, wherein the inelastic fiber is a cellulose fiber.
ロース繊維であることを特徴とする請求項１記載の高伸
縮弾性合成皮革。4. The highly elastic elastic synthetic leather according to claim 1, wherein at least 50% by weight of the inelastic fibers are cellulose fibers.
れた基布を、該基布の布帛構造を組織する弾性繊維の表
面をマスクする手段を適用した後、ポリウレタン溶液で
飽充し、次いで前記飽充溶液中のポリウレタンを凝固さ
せることを特徴とする高伸縮弾性合成皮革の製造方法。5. A base fabric formed by mixing elastic fibers and inelastic fibers is saturated with a polyurethane solution after applying means for masking the surface of elastic fibers that organize the fabric structure of the base fabric. And then coagulating the polyurethane in the saturated solution to produce a highly elastic elastic synthetic leather.
面をマスクする手段が前記基布を水で飽充することを特
徴とする請求項３記載の高伸縮弾性合成皮革の製造方
法。6. The method according to claim 3, wherein the means for masking the surface of the elastic fiber forming the fabric base fabric fills the base fabric with water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8218695A JPH1060782A (en) | 1996-08-20 | 1996-08-20 | Synthetic leather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8218695A JPH1060782A (en) | 1996-08-20 | 1996-08-20 | Synthetic leather |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1060782A true JPH1060782A (en) | 1998-03-03 |
Family
ID=16723972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8218695A Pending JPH1060782A (en) | 1996-08-20 | 1996-08-20 | Synthetic leather |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1060782A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1510621A1 (en) * | 2003-08-28 | 2005-03-02 | Kuraray Co., Ltd. | Leather-like sheets and method for producing them |
| JP2011140727A (en) * | 2010-01-07 | 2011-07-21 | Teijin Fibers Ltd | Leather-like sheet and clothes |
| JP2016164316A (en) * | 2015-03-06 | 2016-09-08 | 東レコーテックス株式会社 | Manufacturing method of sewn product including elastic synthetic leather |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| JP2016164316A (en) * | 2015-03-06 | 2016-09-08 | 東レコーテックス株式会社 | Manufacturing method of sewn product including elastic synthetic leather |
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