JP2015134973A - Woven or knitted fabric - Google Patents
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本発明は、形態安定性に優れるとともに、適度な剛性とフレキシブル性とを併せ持つ織編物に関するものである。 The present invention relates to a woven or knitted fabric that is excellent in form stability and has both appropriate rigidity and flexibility.
従来、織編物からなる粗目のメッシュシートの交点部の固定には、塩化ビニル樹脂等の樹脂を用いて布帛に被覆する加工が行われている。しかし、近年、塩化ビニル樹脂等は環境への影響が問題視され、樹脂加工を行わない加工方法が検討されるようになってきた。 Conventionally, a process of covering a fabric with a resin such as a vinyl chloride resin has been performed to fix an intersection of a coarse mesh sheet made of woven or knitted fabric. However, in recent years, vinyl chloride resins and the like have been considered to have a problem of influence on the environment, and processing methods that do not perform resin processing have been studied.
その一つとして、鞘部が低融点成分からなり芯部が高融点成分からなる芯鞘型複合長繊維を用いて製編織した後、熱処理を行い、低融点成分を溶融または軟化させることによって、交点部を溶融または軟化した低融点成分の固化により固定させ、メッシュシートの粗目形状を固定する方法が提案されている（例えば、特許文献１、２）。そして、用いられる芯鞘型複合長繊維は、寸法安定性や耐候性およびコストを考慮して、芯成分、鞘成分ともにポリエステルが配されたポリエステル系複合長繊維が用いられている。このメッシュシートは、形態安定性や剛性に優れるため、産業資材や土木資材として好適である。 As one of them, after knitting and weaving using a core-sheath type composite continuous fiber whose sheath part is composed of a low melting point component and whose core part is composed of a high melting point component, heat treatment is performed to melt or soften the low melting point component, There has been proposed a method of fixing the coarse shape of the mesh sheet by fixing the intersection part by solidifying a low melting point component which has been melted or softened (for example, Patent Documents 1 and 2). The core-sheath composite long fiber used is a polyester-based composite long fiber in which polyester is arranged for both the core component and the sheath component in consideration of dimensional stability, weather resistance, and cost. Since this mesh sheet is excellent in form stability and rigidity, it is suitable as an industrial material or a civil engineering material.
産業資材や土木資材に好適なメッシュシートは、目ズレが生じず剛性に優れるものが求められることが多いが、用途によっては、剛直過ぎず、繊維製品特有のフレキシブル性が求められる。また、剛直なシートは、柔軟性に欠くため、ロール状に巻物にした場合、強直すぎて径が極めて大きな巻物になり運搬効率が良好とはいえず、また、一旦、ロール状にすると、フレキシブル性がないために、撓んだ形状が残ってしまうという難点がある。 A mesh sheet suitable for industrial materials and civil engineering materials is often required to be free of misalignment and excellent in rigidity, but depending on the application, it is not too rigid and requires flexibility specific to textile products. In addition, since a rigid sheet lacks flexibility, when it is rolled into a roll, it is too strong and has a very large diameter, so it cannot be said that the conveyance efficiency is good. Since there is no property, there exists a difficulty that the bent shape will remain.
本発明は、産業資材や土木資材等に好適なシートであって、目ズレが生じず、かつ、柔軟性が求められる分野においても好適に使用できるシートを提供することを課題とする。 An object of the present invention is to provide a sheet that is suitable for industrial materials, civil engineering materials, and the like, and that can be suitably used even in a field where flexibility is required without causing misalignment.
本発明者等は、上記課題を達成するために検討した。上記した特許文献記載のメッシュシートは、鞘成分が溶融軟化して固化することによって、編織物における糸の交点部が熱固定されるが、交点部以外の織編物全体においても、鞘部の低融点成分が溶融固化しているため、シート全体が硬く剛直になる。そこで、シート全体が剛直にならずに、交点部が固定されて形態安定性に優れるとともに、適度な剛性とフレキシブル性とを併せ持つシートを得るために検討した結果、本発明に到達した。 The present inventors have studied in order to achieve the above-mentioned problems. In the mesh sheet described in the above-mentioned patent document, when the sheath component is melted and softened and solidified, the intersection portion of the yarn in the knitted fabric is heat-set, but the entire woven or knitted fabric other than the intersection portion has a low sheath portion. Since the melting point component is melted and solidified, the entire sheet becomes hard and rigid. Thus, the present invention has been reached as a result of studying to obtain a sheet having not only a rigid sheet but also having an intersection portion fixed and excellent shape stability, and having both moderate rigidity and flexibility.
本発明は、芯部が低融点ポリエステル、鞘部が高融点ポリエステルにより構成される芯鞘型複合繊維からなる糸により製編織された織編物であり、
高融点ポリエステルがポリエチレンテレフタレート、高融点ポリエステルと低融点ポリエステルとの融点差が８０〜１２０℃であり、
該織編物は、少なくとも糸の交点が、加圧により鞘部の形態が破壊されて芯部の低融点ポリエステルが溶出し、溶融または軟化した低融点ポリエステルによって熱接着固定していることを特徴とする織編物を要旨とするものである。
The present invention is a knitted or knitted fabric knitted and woven with a yarn comprising a core-sheath type composite fiber having a core part of a low melting point polyester and a sheath part made of a high melting point polyester,
The high melting point polyester is polyethylene terephthalate, the melting point difference between the high melting point polyester and the low melting point polyester is 80 to 120 ° C.,
The woven or knitted fabric is characterized in that at least at the intersection of the yarn, the shape of the sheath portion is destroyed by pressurization, the low melting point polyester in the core portion is eluted, and the low melting point polyester melted or softened is thermally bonded and fixed. The gist of the knitted or knitted fabric.
以下、本発明について詳細に説明する。 Hereinafter, the present invention will be described in detail.
本発明は、芯鞘型複合繊維からなる糸により製編織された織編物であり、芯鞘型複合繊維においては、芯部に低融点ポリエステル、鞘部に高融点ポリエステルが配されている。一般に、芯鞘型複合繊維は、芯部に高融点ポリエステル、鞘部に低融点ポリエステルが配され、繊維表面に存在する鞘部の低融点ポリエステルを溶融させて熱接着性繊維として用いられることが多い。しかしながら、本発明では、繊維表面には高融点ポリエステルを配し、熱処理により接着成分として機能する低融点ポリエステルは、繊維表面に露出させない繊維形態を採用し、製編織した後の加熱、加圧処理を施したときに、一部の鞘部を破壊させ、鞘部が破壊した箇所から低融点ポリエステルを溶出させて、その箇所において、熱接着成分として機能させる。また、鞘部が破壊していない箇所は、低融点ポリエステルは溶出せず、その箇所においては、繊維は硬くならずに、繊維特有の柔軟性を保持することとなる。 The present invention is a woven or knitted fabric knitted and woven with yarns made of a core-sheath composite fiber. In the core-sheath composite fiber, a low-melting polyester is disposed in the core and a high-melting polyester is disposed in the sheath. In general, the core-sheath type composite fiber is used as a heat-adhesive fiber in which a high-melting point polyester is disposed in the core part and a low-melting point polyester is disposed in the sheath part, and the low-melting point polyester existing in the fiber surface is melted. Many. However, in the present invention, a high melting point polyester is disposed on the fiber surface, and the low melting point polyester that functions as an adhesive component by heat treatment adopts a fiber form that is not exposed on the fiber surface, and is heated and pressurized after knitting and weaving. When a part of the sheath is applied, a part of the sheath is destroyed, and the low-melting polyester is eluted from the location where the sheath is destroyed, and the portion is made to function as a thermal adhesive component. In addition, the low melting point polyester does not elute at a portion where the sheath portion is not broken, and the fiber does not become hard at that portion and the fiber-specific flexibility is maintained.
本発明において、芯鞘型複合繊維は、繊維の長手方向に対して垂直に切断した横断面形状において、芯鞘型の複合形状を呈しているものであればよい。芯部は１つであることが好ましいが、２〜５個程度の複数個ある多芯型であってもよい。また、同心型のものがよいが、偏芯型のものであってもよい。また、横断面形状は芯鞘型であれば、円形断面形状のもののみならず、多角形等の異形のものであってもよい。 In the present invention, the core-sheath type composite fiber only needs to exhibit a core-sheath type composite shape in a cross-sectional shape cut perpendicularly to the longitudinal direction of the fiber. Although the number of cores is preferably one, a multi-core type having a plurality of about 2 to 5 cores may be used. A concentric type is preferable, but an eccentric type may also be used. Moreover, if the cross-sectional shape is a core-sheath type, it may be not only a circular cross-sectional shape but also an irregular shape such as a polygon.
芯鞘型複合繊維においては、鞘部の高融点ポリエステルはポリエチレンテレフタレートであり、芯部のポリエスエルと鞘部の高融点ポリエステルとの融点差は、８０〜１２０℃である。鞘部にポリエチレンテレフタレートを配することにより、引張強力に優れ、織編物の寸法安定性が良好となる。芯部と鞘部との融点差を８０℃以上設けることにより、加熱処理において、鞘部を軟化させることなく、加圧によって被覆形態を良好に破壊して、中の芯部を溶出させることができる。両者の融点差が小さいと、鞘部も熱の影響を受けて可塑化してしまうと、加圧しても芯部を覆ったままの状態で熱変形するだけとなってしまう。融点差の上限を大きくすれば、上記の効果をより奏するが、鞘部の低融点ポリエステルの融点が低いものを採用することになり耐熱性が懸念されることから、上限は１２０℃とする。好ましい融点差は、９０〜１１０℃である。 In the core-sheath type composite fiber, the high melting point polyester in the sheath part is polyethylene terephthalate, and the melting point difference between the polyester in the core part and the high melting point polyester in the sheath part is 80 to 120 ° C. By arranging polyethylene terephthalate in the sheath, the tensile strength is excellent and the dimensional stability of the woven or knitted fabric is improved. By providing a melting point difference of 80 ° C. or more between the core part and the sheath part, in the heat treatment, the sheath form can be favorably destroyed by pressurization without causing the sheath part to soften, and the core part can be eluted. it can. If the melting point difference between the two is small, if the sheath part is plasticized under the influence of heat, it will only be thermally deformed with the core part still covered even if it is pressurized. If the upper limit of the melting point difference is increased, the above effect can be obtained. However, since the low melting point polyester of the sheath part has a low melting point and there is a concern about heat resistance, the upper limit is set to 120 ° C. A preferable melting point difference is 90 to 110 ° C.
ポリエチレンテレフタレートの極限粘度〔η〕は、０．５〜１．１程度が好ましい。極限粘度〔η〕を０．５以上とすることにより、強度に優れた繊維が得られる。一方、極限粘度〔η〕を１．１以下とすることにより、繊維を得る際の溶融紡糸において、芯部の低融点ポリエステルが劣化等起こすことなく、良好に紡糸できる。 The intrinsic viscosity [η] of polyethylene terephthalate is preferably about 0.5 to 1.1. By setting the intrinsic viscosity [η] to 0.5 or more, a fiber excellent in strength can be obtained. On the other hand, by setting the intrinsic viscosity [η] to 1.1 or less, in the melt spinning at the time of obtaining the fiber, the low melting point polyester in the core part can be spun well without causing deterioration or the like.
芯部の低融点ポリエステルは、共重合ポリエステルがよい。共重合ポリエステルとしては、例えば、エチレンテレフタレート単位に、イソフタル酸、２，６−ナフタレンジカルボン酸、アジピン酸、セバシン酸、１，４−ブタンジオール、１，６−ヘキサンジオール等を共重合したものが挙げられる。またさらに、脂肪族ラクトンが共重合されていてもよい。脂肪族ラクトンとしては、炭素数４〜１１のラクトンを単独で用いても２種以上を混合して用いてもよく、特に良好なラクトンとして、ε−カプロラクトンやδ−バレロラクトン等があげられる。熱接着成分として機能する低融点ポリエステルは、高温雰囲気下で使用した際の変形しにくさから、ＤＳＣ曲線を描いた際に明確な融点ピークを示す結晶性のものが好ましい。 The low melting point polyester in the core is preferably a copolyester. Examples of the copolyester include those obtained by copolymerizing ethylene terephthalate units with isophthalic acid, 2,6-naphthalenedicarboxylic acid, adipic acid, sebacic acid, 1,4-butanediol, 1,6-hexanediol, and the like. Can be mentioned. Furthermore, an aliphatic lactone may be copolymerized. As the aliphatic lactone, a lactone having 4 to 11 carbon atoms may be used alone, or two or more kinds thereof may be mixed and used. Particularly preferable lactones include ε-caprolactone and δ-valerolactone. The low-melting polyester that functions as a heat-bonding component is preferably a crystalline polyester that exhibits a clear melting point peak when a DSC curve is drawn because it is not easily deformed when used in a high-temperature atmosphere.
芯鞘型複合繊維を構成するポリエステルには、本発明の目的を損なわない範囲で、他の成分、各種添加剤や着色顔料等を含有してもよい。 The polyester constituting the core-sheath type composite fiber may contain other components, various additives, a color pigment, and the like as long as the object of the present invention is not impaired.
芯鞘型複合繊維の芯鞘複合比（芯／鞘の質量比率）は、１／４〜４／１が好ましく、より好ましくは３／１〜１／３である。芯部が１／４より小さくなると、複合形態が単繊維間で不均一になりやすく、延伸性に劣る傾向となる。また、芯部の質量が相対的に少なく、加熱した熱が芯部に伝わりにくい傾向となり、加圧処理により芯部の低融点ポリエステルが溶出しにくく、交点を接着固化させる機能が低下する。一方、芯部が４／１よりも大きくなると、繊維の強度が低下する傾向となる。 The core-sheath composite fiber core-sheath composite ratio (core / sheath mass ratio) is preferably 1/4 to 4/1, and more preferably 3/1 to 1/3. When the core portion is smaller than 1/4, the composite form tends to be non-uniform between the single fibers, and the stretchability tends to be inferior. Moreover, the mass of the core part is relatively small, and the heated heat tends to be difficult to be transmitted to the core part, and the low melting point polyester of the core part is hardly eluted by the pressurizing process, and the function of bonding and solidifying the intersection point is lowered. On the other hand, when the core is larger than 4/1, the strength of the fiber tends to decrease.
芯鞘型複合繊維の切断強度は、２．０ｃＮ／ｄｔｅｘ以上であることが好ましく、より好ましくは２．２ｃＮ／ｄｔｅｘ以上である。切断強度が２．０ｃＮ／ｄｔｅｘ以上とすることにより、一般的な産業資材用途として実用的な強度を有するといえる。また、強度以外の物性は特に限定しないが、例えば、切断伸度は１０〜３５％程度がよい。 The cutting strength of the core-sheath type composite fiber is preferably 2.0 cN / dtex or more, more preferably 2.2 cN / dtex or more. By setting the cutting strength to 2.0 cN / dtex or more, it can be said that the cutting strength has practical strength as a general industrial material application. Moreover, although physical properties other than intensity | strength are not specifically limited, For example, cutting elongation is good about 10 to 35%.
芯鞘型複合繊維の形態は、特定の繊維長を有する短繊維であっても、実質的にエンドレスである長繊維（連続繊維）であってもよいが、強度等を考慮すると、長繊維であることが好ましい。なお、短繊維を採用する場合は、織編物とする際には、紡績糸の形態や、長繊維と複合した長短複合紡績糸として用いるとよい。 The form of the core-sheath type composite fiber may be a short fiber having a specific fiber length or a substantially continuous endless fiber (continuous fiber). Preferably there is. In addition, when adopting a short fiber, when using it as a woven or knitted fabric, it is good to use it as the form of a spun yarn, or the long and short composite spun yarn combined with the long fiber.
長繊維を採用する場合、織編物を製編織する糸としては、マルチフィラメント糸であってもモノフィラメント糸であってもよいが、取扱い性が良好であることから、マルチフィラメント糸を用いるとよい。また、マルチフィラメント糸を合撚した合撚糸を用いてもよい。 When long fibers are employed, the yarn for knitting or weaving the knitted or knitted fabric may be a multifilament yarn or a monofilament yarn, but a multifilament yarn is preferably used because of good handling properties. Alternatively, a twisted yarn obtained by twisting a multifilament yarn may be used.
モノフィラメント糸の場合は、繊度２００〜２０００ｄｔｅｘの範囲がよい。マルチフィラメント糸の場合、マルチフィラメント糸を構成する繊維数は、２０〜２００本、単繊維繊度は５〜３０ｄｔｅｘ程度がよく、マルチフィラメント糸の総繊度は、２００〜２０００ｄｔｅｘ程度がよい。マルチフィラメント糸を構成するフィラメント数が少ない方が、加圧した際に、鞘部の被覆形態を効率よく破壊させることができる。フィラメント数が多いと、単フィラメントに加わる圧力が小さくなる傾向となるため、加圧時の圧力を大きくすることを要する。なお、合撚糸を採用する場合は、合撚糸の総繊度は６００〜４０００ｄｔｅｘ程度がよい。また、マルチフィラメント糸や合撚糸は、撚りが強い方が、加圧の際の鞘部の破壊効果を良好に奏しやすいため、撚り数は１２０〜２５０Ｔ／Ｍであることが好ましい。 In the case of monofilament yarn, a fineness range of 200 to 2000 dtex is preferable. In the case of multifilament yarn, the number of fibers constituting the multifilament yarn is preferably 20 to 200, the single fiber fineness is preferably about 5 to 30 dtex, and the total fineness of the multifilament yarn is preferably about 200 to 2000 dtex. When the number of filaments constituting the multifilament yarn is smaller, the covering form of the sheath portion can be efficiently broken when pressurized. When the number of filaments is large, the pressure applied to the single filament tends to be small, so that it is necessary to increase the pressure during pressurization. In addition, when employing a twisted yarn, the total fineness of the twisted yarn is preferably about 600 to 4000 dtex. Moreover, since the multifilament yarn and the twisted yarn are more likely to be twisted so that the effect of destroying the sheath portion during pressurization can be favorably achieved, the number of twists is preferably 120 to 250 T / M.
芯鞘型複合長繊維は、公知の方法により得ることができる。まず、芯部と鞘部を構成するポリエステルチップをそれぞれ準備し、公知の複合紡糸装置を用いて溶融紡糸する。そして、未延伸糸を一旦巻き取り、その後延伸を行う２工程法を採用してもよいが、また、一旦巻き取らずに連続して延伸を行うスピンドロー法を採用すると生産性やコスト面において好ましい。延伸方法は、加熱ローラーのみで行うローラー延伸または加熱ローラー間にスチーム熱処理装置を設けて行う方法を採用することができる。巻き取り速度は１５００〜４０００ｍ／分程度が好ましく、巻き取り速度がこの範囲より遅いと生産性が劣り、逆に、速いと高強度が得られ難く、延伸性が劣る傾向となる。 The core-sheath type composite continuous fiber can be obtained by a known method. First, polyester chips constituting the core part and the sheath part are respectively prepared and melt-spun using a known composite spinning apparatus. In addition, a two-step method in which the undrawn yarn is wound once and then drawn may be adopted, but if a spin draw method is used in which drawing is performed continuously without winding, in terms of productivity and cost. preferable. As the stretching method, it is possible to employ roller stretching performed only with a heating roller or a method performed by providing a steam heat treatment apparatus between the heating rollers. The winding speed is preferably about 1500 to 4000 m / min. If the winding speed is slower than this range, the productivity is inferior. Conversely, if the winding speed is high, high strength is difficult to obtain and the stretchability tends to be inferior.
本発明の織編物は、前記した芯鞘型複合繊維からなる糸により製編織されてなる。織物としては、平織物、綾織物、朱子織物、搦み組織の模紗織物等が挙げられるが、一般に、目ズレが起こりやすい粗目のメッシュ構造である模紗織物はより効果的であるため好ましい。また、編物としては、ラッセル編地が挙げられ、粗目のメッシュ構造である緯糸挿入ラッセル編地を好ましく用いることができる。 The woven or knitted fabric of the present invention is knitted and woven with a yarn comprising the above-described core-sheath type composite fiber. Examples of the woven fabric include plain woven fabrics, twill woven fabrics, satin woven fabrics, and simulated woven fabrics with a kneaded structure. Generally, a woven fabric having a coarse mesh structure in which misalignment easily occurs is preferable because it is more effective. . Examples of the knitted fabric include a raschel knitted fabric, and a weft-inserted raschel knitted fabric having a coarse mesh structure can be preferably used.
所望の組織にて製編織された織編物は、熱と圧が加えられる。加熱されることにより、芯部の低融点ポリエステルが溶融または軟化し、加圧されることにより、熱の影響を受けていない鞘部の高融点ポリエスエルの被覆形状が破壊される。そして、鞘部の破壊により、芯部の溶融または軟化した低融点ポリエステルが溶出し、接着固化する。織編物において、糸の交点部が、より厚みを有するため、圧が加わりやすく、この箇所の鞘部が少なくとも破壊されて、芯部が溶出し、交点部を熱接着固定する。これにより、目ズレが生じにくく、形態安定性の良好な織編物が得られる。交点部以外の個所においても、加圧されることにより、部分的に鞘部が破壊されて、芯部が溶出する箇所もあるが、織編物全体において溶出しないため、織編物自体は剛直とならず、繊維製品特有のフレキシブル性を維持する。熱と圧を加えるにあたっては、加熱と加圧を同時に行っても、また、加熱した後に加圧してもよい。 Heat and pressure are applied to the woven or knitted fabric knitted and woven with a desired structure. By heating, the low melting point polyester in the core part is melted or softened, and by applying pressure, the covering shape of the high melting point polyester in the sheath part not affected by heat is destroyed. Then, due to the destruction of the sheath portion, the melted or softened low melting point polyester of the core portion is eluted and is solidified by adhesion. In the knitted or knitted fabric, the intersection portion of the yarn has a greater thickness, so that pressure is easily applied, and at least the sheath portion of this portion is broken, the core portion is eluted, and the intersection portion is fixed by thermal bonding. As a result, it is possible to obtain a woven or knitted fabric with less misalignment and good shape stability. Even at locations other than the intersection, there is a part where the sheath part is partially broken and the core part elutes due to pressurization, but since the whole woven or knitted article does not elute, the woven or knitted article itself must be rigid. The flexibility unique to textile products is maintained. When applying heat and pressure, heating and pressurization may be performed simultaneously, or pressurization after heating.
加熱の際には、鞘部を通して芯部の低融点ポリエステルへ十分に熱を伝える熱源を要する。このため加熱温度は、芯部の低融点ポリエステルの融点よりも２０〜６０℃の範囲で高い温度に設定することが好ましい。設定温度が、低融点ポリエステルの融点＋２０℃よりも低い温度では、芯部まで十分に熱が伝わらず、加圧により良好に溶出せずに、熱接着成分としての機能しない恐れがある。一方、低融点ポリエステルの融点＋６０℃を超える温度に設定すすると、鞘部のポリエチレンテレフタレートが熱の影響を受けたり、また、繊維自体が熱劣化する恐れがある。また、加熱処理の手段としては、織編物を熱ロールに沿わす、熱風処理機に通す等が挙げられる。熱処理時間は、設定温度等によって適宜設定すればよいが、３〜６０秒程度がよい。加熱と加圧を同時に行わない場合は、２０〜６０秒程度がよい。 When heating, a heat source that sufficiently transfers heat to the low-melting polyester in the core through the sheath is required. For this reason, it is preferable to set heating temperature in the range of 20-60 degreeC higher than melting | fusing point of the low melting point polyester of a core part. When the set temperature is lower than the melting point of the low-melting polyester + 20 ° C., heat is not sufficiently transferred to the core, and it does not elute well due to pressurization, and may not function as a thermal adhesive component. On the other hand, if the temperature is higher than the melting point of the low-melting polyester + 60 ° C., the polyethylene terephthalate in the sheath may be affected by heat or the fibers themselves may be thermally deteriorated. Examples of the heat treatment include passing the woven or knitted fabric along a hot roll or passing it through a hot air treatment machine. The heat treatment time may be appropriately set depending on the set temperature or the like, but is preferably about 3 to 60 seconds. When heating and pressurization are not performed simultaneously, about 20 to 60 seconds is preferable.
織編物を加圧する際の条件は、被処理物の厚み等に応じて適宜選択すればよいが、１〜１０ｋｇ／ｃｍ２程度がよい。好ましくは、３〜６ｋｇ／ｍ２である。 The conditions for pressurizing the woven or knitted fabric may be appropriately selected according to the thickness of the object to be treated, but are preferably about 1 to 10 kg / cm 2 . Preferably, a 3~6kg / m 2.
本発明の織編物は、芯部に低融点ポリエステル、鞘部に高融点ポリエステルが配された芯鞘型複合繊維からなる糸により製編物された織編物を加熱および加圧することにより、織編物の少なくとも交点が、溶出した低融点ポリエステルにより熱接着固定しているものである。熱処理により接着成分として機能する低融点ポリエステルは、繊維表面に露出させない繊維形態を採用し、製編織した後の加熱、加圧処理を施したときに、一部の鞘部を破壊させ、鞘部が破壊した箇所から低融点ポリエステルを溶出させて、その箇所において、熱接着成分として機能させ、目ズレを防止して、形態安定性が良好となり、一方、鞘部が破壊していない箇所は、低融点ポリエステルは溶出せず、その箇所においては、繊維は硬くならずに、繊維特有の柔軟性を保持することとなる。 The woven or knitted fabric of the present invention is obtained by heating and pressurizing a woven or knitted fabric knitted with a yarn comprising a core-sheath type composite fiber in which a low melting point polyester is disposed in the core and a high melting point polyester is disposed in the sheath. At least the intersections are heat-bonded and fixed by the low-melting polyester that has eluted. Low melting point polyester that functions as an adhesive component by heat treatment adopts a fiber form that is not exposed on the fiber surface, and when subjected to heating and pressure treatment after weaving and weaving, part of the sheath part is destroyed, and the sheath part The low-melting point polyester is eluted from the broken part, and in that part, it functions as a heat-adhesive component, prevents misalignment, the shape stability is improved, while the sheath part is not broken, The low melting point polyester does not elute, and the fiber does not become hard at that portion, and the fiber-specific flexibility is maintained.
したがって、本発明の織編物は、形態安定性に優れるとともに、一部が熱接着成分により熱固定されているため、程よく剛性があるとともに、繊維製品特有のフレキシブル性も併せ持つ。よって、剛性と柔軟性とを要する用途に、非常に好適に使用可能である。また、柔軟性を有するために、ロール状に巻物にしやすく、また、一旦、ロール状にしてもフレキシブル性を有するために撓んだ形状が残りにくい。 Therefore, the woven or knitted fabric of the present invention is excellent in form stability and partly heat-fixed by the heat-bonding component, so that it has moderate rigidity and also has flexibility unique to textile products. Therefore, it can be used very suitably for applications that require rigidity and flexibility. Moreover, since it has a softness | flexibility, it is easy to make it a roll-shaped scroll, and once it is roll-shaped, since it has flexibility, it is hard to remain the bent shape.
次に、本発明の実施例によって具体的に説明する。なお、実施例における各物性値は、次の方法で測定した。
（１）ポリエステルの極限粘度〔η〕
フェノールと四塩化エタンとの等重量混合物を溶媒とし、濃度０．５ｇ／ｄｌ、温度２０℃で測定した。
（２）繊維の切断強度、切断伸度
ＪＩＳ Ｌ−１０１３ 引張強さ及び伸び率の標準時試験に従い、島津製作所製オートグラフＤＳＳ−５００を用い、つかみ間隔２５ｃｍ、引張速度３０ｃｍ／分で測定した。
（３）融点
パーキンエルマー社製の示差走査型熱量計ＤＳＣ−７型を使用し、昇温速度２０℃／分で測定した。
（４）風合い評価（カンチレバー法）
長さ１６ｃｍ×幅２ｃｍの試料を１０点準備し、４５°カンチレバー法（ＪＩＳ Ｌ １０９６）に基づき測定した。すなわち、カンチレバー形試験機の水平台の上に、スケールの長手方向と試料の長手方向が平行になり、かつ試料の先端がスケール基線に合うように試料を置き、また、試料の上には、試料がスケールと平行に移動するようにステンレス板を載せた。試料を斜面の方向に緩やかに押し出し、試料の先端が斜面と接したとき、他端の位置をスケールによって読み取り、移動した長さ（ｍｍ）を求めた。得られた値の１０点の平均値を剛軟度とした。移動した長さが小さいほど、柔軟性に優れることを表している。
Next, an embodiment of the present invention will be specifically described. In addition, each physical-property value in an Example was measured with the following method.
(1) Intrinsic viscosity of polyester [η]
An equal weight mixture of phenol and ethane tetrachloride was used as a solvent, and measurement was performed at a concentration of 0.5 g / dl and a temperature of 20 ° C.
(2) Cut strength and cut elongation of fiber JIS L-1013 According to a standard time test of tensile strength and elongation, Shimadzu Autograph DSS-500 was used and measured at a grip interval of 25 cm and a tensile speed of 30 cm / min.
(3) Melting point A differential scanning calorimeter DSC-7 manufactured by Perkin Elmer was used and measured at a heating rate of 20 ° C./min.
(4) Texture evaluation (cantilever method)
Ten samples having a length of 16 cm and a width of 2 cm were prepared and measured based on a 45 ° cantilever method (JIS L 1096). That is, on the horizontal stage of the cantilever type tester, place the sample so that the longitudinal direction of the scale and the longitudinal direction of the sample are parallel and the tip of the sample is aligned with the baseline of the scale. A stainless steel plate was placed so that the sample moved parallel to the scale. The sample was gently pushed out in the direction of the slope, and when the tip of the sample was in contact with the slope, the position of the other end was read with a scale to determine the length (mm) moved. An average value of 10 points of the obtained values was defined as bending resistance. The smaller the length moved, the better the flexibility.
実施例１
鞘部に、極限粘度〔η〕０．７、融点２５５℃のポリエチレンテレフタレートを用いた。芯部に、融点が１５７℃の共重合ポリエステル（エチレンテレフタート単位に１，４−ブタンジオールとε−カプロラクトンとを共重合してなる結晶性のポリエステル）を用いた。
Example 1
For the sheath, polyethylene terephthalate having an intrinsic viscosity [η] 0.7 and a melting point of 255 ° C. was used. A copolymer polyester (crystalline polyester obtained by copolymerizing 1,4-butanediol and ε-caprolactone on an ethylene terephthalate unit) having a melting point of 157 ° C. was used for the core.
公知の複合溶融紡糸装置を用いて、孔径が０．５ｍｍ、ホール数が９６個の芯鞘型複合紡糸口金を装着し、口金温度２９０℃、芯鞘質量比を芯：鞘が１：２．７として紡出した。紡糸口金直下に設けた温度２５０℃、長さ１５ｃｍの加熱筒内を通過させた後、長さ２０ｃｍの環状吹付装置で、冷却温度１５℃、速度０．７ｍ／秒で冷却した。
次に、油剤を付着して非加熱のローラーに引き取り、連続して温度１００℃のローラーで１．０２倍に引き揃えを行い、その後、温度１３０℃のローラーで３．０倍の延伸を行い、次いで、温度１１０℃のローラーで４％の弛緩処理を行って、１％のリラックスを掛けて速度２５００ｍ／分のワインダーに巻き取り、円形断面形状で、芯部と鞘部が同心円に配置された１１００ｄｔｅｘ／９６フィラメントの芯鞘型複合長繊維からなるマルチフィラメント糸を得た。
Using a known composite melt spinning apparatus, a core-sheath type composite spinneret having a hole diameter of 0.5 mm and 96 holes is mounted, the base temperature is 290 ° C., and the core-sheath mass ratio is 1: 2. Spinned as 7. After passing through a heating cylinder having a temperature of 250 ° C. and a length of 15 cm provided immediately below the spinneret, it was cooled at a cooling temperature of 15 ° C. and a speed of 0.7 m / sec with an annular spraying device having a length of 20 cm.
Next, the oil agent is attached and taken up by a non-heated roller, and is continuously drawn 1.02 times with a roller at a temperature of 100 ° C., and then stretched 3.0 times with a roller at a temperature of 130 ° C. Next, 4% relaxation treatment is performed with a roller at a temperature of 110 ° C., 1% relaxation is applied and wound around a winder with a speed of 2500 m / min, and the core and sheath are concentrically arranged in a circular cross-sectional shape. In addition, a multifilament yarn composed of a core-sheath type composite continuous fiber of 1100 dtex / 96 filaments was obtained.
次いで、得られたマルチフィラメント糸を撚糸した。撚糸条件は、鞘部が破壊しやすいように硬さをもたせるため、１１００ｄｔｅｘ／９６フィラメントのマルチフィラメント糸をＳ撚り１５０Ｔ／Ｍとした強撚糸（経糸用）と、１１００ｄｔｅｘ／９６フィラメントのマルチフィラメント糸３本をＳ撚り２００Ｔ／Ｍとした強撚の合撚糸（緯糸用）とを得た。 Subsequently, the obtained multifilament yarn was twisted. As for the twisting conditions, in order to give hardness so that the sheath part is easily broken, a multi-filament yarn of 1100 dtex / 96 filament is S twisted (for warp) with 150 T / M and a multifilament yarn of 1100 dtex / 96 filament Three twisted S twisted 200T / M strongly twisted twisted yarn (for weft) was obtained.
得られた２種の撚糸を用いて、織組織を３本模紗織り（経糸密度１７本／インチ、緯糸密度１７本／インチ）として模紗織物を得た。次いで、得られた織物を、ロール温度２２０℃に設定した金属ロールに２５秒間接触するように沿わせた後、プレス機により、圧力５．５ｋｇ／ｃｍ２の加圧処理を行い、実施例１の織物を得た。 Using the obtained two types of twisted yarns, a three-ply weave weave was used (a warp density of 17 yarns / inch, a weft density of 17 yarns / inch) to obtain a dummy woven fabric. Next, the obtained woven fabric was placed so as to be in contact with a metal roll set at a roll temperature of 220 ° C. for 25 seconds, and then subjected to a pressure treatment at a pressure of 5.5 kg / cm 2 by a press machine. Fabric was obtained.
実施例２
加圧処理の条件を４．５ｋｇ／ｃｍ２としたこと以外は、実施例１と同様にして、実施例２の織物を得た。
Example 2
A fabric of Example 2 was obtained in the same manner as in Example 1 except that the pressure treatment condition was 4.5 kg / cm 2 .
実施例３
加熱および加圧処理の条件として、ロール温度を２００℃、プレス機による圧力を４．５ｋｇ／ｃｍ２としたこと以外は、実施例１と同様にして、実施例３の織物を得た。
Example 3
A woven fabric of Example 3 was obtained in the same manner as Example 1 except that the roll temperature was 200 ° C. and the pressure by the press was 4.5 kg / cm 2 as the conditions for the heating and pressurizing treatment.
実施例４
実施例１において、芯鞘質量比を１：１としたこと、５５０ｄｔｅｘ／４８フィラメントのマルチフィラメント糸としたこと、加熱および加圧処理の条件をロール温度を１９０℃とし、プレス機による圧力を２．０ｋｇ／ｃｍ２としたこと以外は、実施例１と同様にして、実施例４の織物を得た。
Example 4
In Example 1, the core-sheath mass ratio was set to 1: 1, the multifilament yarn of 550 dtex / 48 filaments was used, the heating and pressurizing conditions were set to a roll temperature of 190 ° C., and the pressure by the press was 2 A woven fabric of Example 4 was obtained in the same manner as Example 1 except that the amount was 0.0 kg / cm 2 .
比較例１
加熱処理の条件として、ロール温度を１７０℃としたこと以外は、実施例１と同様に行ったが、得られた織物を観察したところ、織物のいずれにおいても熱接着されている箇所はなかった。
Comparative Example 1
The heat treatment was carried out in the same manner as in Example 1 except that the roll temperature was set to 170 ° C. However, when the obtained woven fabric was observed, there was no portion that was thermally bonded in any of the woven fabrics. .
比較例２
実施例１において、芯部と鞘部におけるポリエステルを逆に配した（芯部にポリエチレンテレフタレート、鞘部に共重合ポリエステルを配した。）こと、加熱処理の条件をロール温度１７０℃としたこと以外は、実施例１と同様にした。得られた織物は、織物全面が、溶融固着したものとなり、剛直で硬いシートであった。
Comparative Example 2
In Example 1, the polyester in the core part and the sheath part was arranged in reverse (polyethylene terephthalate was arranged in the core part and copolymer polyester was arranged in the sheath part), and the heat treatment conditions were set to a roll temperature of 170 ° C. Was the same as in Example 1. The obtained woven fabric was a solid and hard sheet, with the entire surface of the woven fabric being melt-fixed.
得られた実施例１〜４、比較例１、２の織物の風合いを評価したところ、実施例１は８９ｍｍ、実施例２は８６ｍｍ、実施例３は８７ｍｍ、実施例４は８６ｍｍであった。一方、熱接着部が観察されなかった比較例１は６６ｍｍ、織物全面が溶融固着してなる比較例２は水平台の端まで移動させても斜面に接することはなく１６０ｍｍ以上（測定不能）となった。 When the textures of the obtained fabrics of Examples 1 to 4 and Comparative Examples 1 and 2 were evaluated, Example 1 was 89 mm, Example 2 was 86 mm, Example 3 was 87 mm, and Example 4 was 86 mm. On the other hand, Comparative Example 1 in which no heat-bonded portion was observed was 66 mm, and Comparative Example 2 in which the entire surface of the fabric was melted and fixed did not touch the slope even when moved to the end of the horizontal base, and was 160 mm or more (measurement impossible). became.
実施例１〜４の織物は、経糸と緯糸の交点部分が良好に接着固定されており、良好な形態安定性を有するとともに、良好にロール状に巻くことができ、かつ巻き状態を解除した後も、撓んだ形状は残っていなかった。
In the woven fabrics of Examples 1 to 4, the intersection of the warp and the weft is well bonded and fixed, has good shape stability, can be wound well in a roll shape, and is released from the wound state. However, the bent shape did not remain.
Claims (5)
高融点ポリエステルがポリエチレンテレフタレート、高融点ポリエステルと低融点ポリエステルとの融点差が８０〜１２０℃であり、
該織編物は、少なくとも糸の交点が、加圧により鞘部の形態が破壊されて芯部の低融点ポリエステルが溶出し、溶融または軟化した低融点ポリエステルによって熱接着固定していることを特徴とする織編物。 It is a woven or knitted fabric knitted and woven with a yarn composed of a core-sheath type composite fiber having a core part made of low melting point polyester and a sheath part made of high melting point polyester,
The high melting point polyester is polyethylene terephthalate, the melting point difference between the high melting point polyester and the low melting point polyester is 80 to 120 ° C.,
The woven or knitted fabric is characterized in that at least at the intersection of the yarn, the shape of the sheath portion is destroyed by pressurization, the low melting point polyester in the core portion is eluted, and the low melting point polyester melted or softened is thermally bonded and fixed. Woven knitting.
The woven or knitted fabric according to any one of claims 1 to 4, wherein the woven or knitted fabric is a dummy woven fabric.
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| JP2014006826A JP6262541B2 (en) | 2014-01-17 | 2014-01-17 | Woven knitting |
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| JP2014006826A JP6262541B2 (en) | 2014-01-17 | 2014-01-17 | Woven knitting |
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| JP6262541B2 JP6262541B2 (en) | 2018-01-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017029268A (en) * | 2015-07-30 | 2017-02-09 | 株式会社タイキ | Liquid cosmetic holding/feeding pad |
| TWI618827B (en) * | 2016-06-21 | 2018-03-21 | Composite reinforced fabric and preparation method thereof | |
| US11060215B2 (en) | 2017-01-26 | 2021-07-13 | Bright Cheers International Limited | Reinforced composite fabric and method for preparing the same |
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| JPH073762A (en) * | 1993-06-18 | 1995-01-06 | Unitika Ltd | Civil engineering sheet |
| JPH07138931A (en) * | 1993-11-17 | 1995-05-30 | Toray Ind Inc | Water pearmeable construction sheet |
| JPH10310963A (en) * | 1997-05-12 | 1998-11-24 | Unitika Ltd | Short fiber nonwoven fabric and its production |
| US20040132376A1 (en) * | 2001-06-22 | 2004-07-08 | Haworth William Stafford | Biocomponent fibers and textiles made therefrom |
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| JP2006183191A (en) * | 2004-12-28 | 2006-07-13 | Unitika Ltd | Biodegradable nonwoven fabric and method for producing the same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017029268A (en) * | 2015-07-30 | 2017-02-09 | 株式会社タイキ | Liquid cosmetic holding/feeding pad |
| TWI618827B (en) * | 2016-06-21 | 2018-03-21 | Composite reinforced fabric and preparation method thereof | |
| US11060215B2 (en) | 2017-01-26 | 2021-07-13 | Bright Cheers International Limited | Reinforced composite fabric and method for preparing the same |
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| Publication number | Publication date |
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| JP6262541B2 (en) | 2018-01-17 |
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