JP4785459B2 - Cushion material - Google Patents

Cushion material Download PDF

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JP4785459B2
JP4785459B2 JP2005233955A JP2005233955A JP4785459B2 JP 4785459 B2 JP4785459 B2 JP 4785459B2 JP 2005233955 A JP2005233955 A JP 2005233955A JP 2005233955 A JP2005233955 A JP 2005233955A JP 4785459 B2 JP4785459 B2 JP 4785459B2
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knitted fabric
yarn
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dimensional knitted
value
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JP2007044386A (en
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直美 森戸
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Asahi Kasei Fibers Corp
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Description

本発明は、立体編物を表面に使用したクッション材に関し、特に長時間皮膚接触時においても肌刺激の少ないクッション材に関する。   The present invention relates to a cushioning material using a three-dimensional knitted fabric on the surface, and more particularly to a cushioning material with little skin irritation even when touching the skin for a long time.

寝具等のクッション材の表面に使用される生地の皮膚刺激性は、通常、発汗のない状態での刺激性有無が確認されており、安全性が認められているが、発汗時を想定した評価はなされていないのが現状である。人間の皮膚は、湿潤が継続すると皮膚がふやけた状態となって抵抗力が弱まり、雑菌が繁殖しやすくなる。従って、例えば睡眠中等に発汗しそのまま放置すると、寝具表面との皮膚接触面が長時間湿った状態が持続し、痒みを感じたり、かぶれ等の皮膚障害を生じたりすることがある。   The skin irritation of the fabric used on the surface of cushion materials such as bedding has been confirmed to be irritating in the absence of sweating, and safety has been confirmed. It is the current situation that has not been made. When the human skin continues to be wet, the skin becomes soft and the resistance is weakened, so that germs can easily propagate. Therefore, for example, if sweat is left during sleep or the like and left as it is, the skin contact surface with the bedding surface may remain moist for a long time, and it may cause itchiness or skin damage such as a rash.

また、従来より、立体編物はクッション材として広く使用されているが、その目的の多くは湿潤の解消であり、発汗により湿潤し、かつ長時間皮膚に接触している場合において、編地表面の特性が皮膚に与える刺激性までは考慮されていなかった。
特開2002−325657号公報
Conventionally, a three-dimensional knitted fabric has been widely used as a cushioning material, but most of its purpose is to eliminate moisture, and when it is wet by sweating and is in contact with the skin for a long time, the surface of the knitted fabric is The irritation that the properties give to the skin was not considered.
JP 2002-325657 A

本発明の課題は、発汗して皮膚が湿潤し、臥床又は着座を長時間続けた場合においても、肌刺激の少ないクッション材を提供することである。   An object of the present invention is to provide a cushion material with less skin irritation even when the skin is moistened by sweating and the bed or sitting is continued for a long time.

本発明者は、上記課題を解決するために、長時間の臥床あるいは着座における肌刺激のメカニズムと、クッション材の表面編地を構成する要件、例えば使用する繊維素材、組織等の構造との関連について詳細な検討を繰り返した結果、表面編地の立体構造と、表面凹凸状態を表すMMD値とが大きく関係することを究明し、本発明に到達するに至った。   In order to solve the above-mentioned problems, the inventor of the present invention relates to the relationship between the mechanism of skin irritation in long-term bed resting or sitting and the requirements of the surface knitted fabric of the cushion material, for example, the structure of the fiber material, tissue, etc. to be used. As a result of repeating detailed studies on the above, it has been found that the three-dimensional structure of the surface knitted fabric and the MMD value representing the surface irregularity state are greatly related, and the present invention has been reached.

すなわち、本発明は、
表裏二層の編地と、該二層の編地を連結する連結糸とから構成された立体編物を有する表面材を持ったクッション材であって、立体編物の総カバーファクター(TCF)が650以上、1550以下、立体編物表面のメッシュの開孔面積が0.13cm 2 以下、立体編物の連結糸出現面積割合(A)と連結糸直径(D)の積(A×D)が0.001以上、1.200以下(但し、Aは30以下)であり、該表面材のMMD値の経緯平均値が0.001以上、0.04以下であることを特徴とするクッション材である(但し、上記MMD値は、カトーテック株式会社製「摩擦感テスターKES−SE」を使用し、評価条件は、感度H、試験台移動速度1.00mm/秒、摩擦静荷重50gf、摩擦子は指先を模した装置付属のものとし、温度20℃、湿度65%RHの環境下で測定した値とする)。
That is, the present invention
A cushioning material having a surface material having a three-dimensional knitted fabric composed of two layers of front and back knitted fabrics and connecting yarns connecting the two knitted fabrics, and the total cover factor (TCF) of the three-dimensional knitted fabric is 650 Above, 1550 or less, the opening area of the mesh on the surface of the three-dimensional knitted fabric is 0.13 cm 2 or less, and the product (A × D) of the connecting yarn appearance area ratio (A) and the connecting yarn diameter (D) of the three-dimensional knitted fabric is 0.001. The cushioning material is characterized in that it is 1.200 or less (where A is 30 or less), and the background average value of the MMD value of the surface material is 0.001 or more and 0.04 or less (however, The above MMD value uses “Friction Sense Tester KES-SE” manufactured by Kato Tech Co., Ltd., and the evaluation conditions are sensitivity H, test table moving speed 1.00 mm / sec, static static load 50 gf, and the friction element is a fingertip. It comes with a simulated device and has a temperature of 20 (Measured in an environment of ° C. and humidity of 65% RH).

本発明のクッション材は、ざらつきが小さく、肌刺激の小さいクッション材であり、発汗した状態で長時間使用しても、皮膚に与える刺激性が小さく、その機能を維持することができる。   The cushioning material of the present invention is a cushioning material having a small roughness and a small skin irritation. Even if it is used for a long time while sweating, the cushioning material has a small irritation to the skin and can maintain its function.

以下、本発明を詳細に説明する。
本発明の表面材に使用する立体編物の特徴について説明する。
Hereinafter, the present invention will be described in detail.
The characteristics of the three-dimensional knitted fabric used for the surface material of the present invention will be described.

先ず立体編物の表面(肌が直接触れる面)に使用する繊維素材は、綿、麻、絹、ウール等の天然繊維、キュプラ、レーヨン、精製セルロース繊維、アセテート(ジ並びにトリアセテート)等のセルロース系繊維、ポリエチレンテレフタレート、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等のポリエステル系繊維、W型等の異型断面糸や吸湿性や吸水性を改質したポリエステル系、ポリアミド系等合成繊維等のいずれでもよい。繊維の断面形状は、丸型、三角、L型、T型、Y型、W型、八葉型、偏平、ドッグボーン型等の多角形型、多葉型、中空型や不定形があり、繊維の形態も、原糸(未加工糸)、紡績糸、有撚糸、仮撚加工糸、流体噴射加工糸等いずれのものを採用してもよく、マルチフィラメント糸でもモノフィラメント糸でも良く、これらの素材及び又は断面や形態の異なる二種以上を交絡、交撚、複合仮撚加工、交編等の公知の複合手段で混用して用いてもよい。   First, the fiber materials used for the surface of the three-dimensional knitted fabric (the surface directly touched by the skin) are natural fibers such as cotton, hemp, silk, and wool, and cellulosic fibers such as cupra, rayon, purified cellulose fibers, and acetate (di and triacetate). Polyester fibers such as polyethylene terephthalate, polytrimethylene terephthalate, and polybutylene terephthalate, W-shaped atypical cross-section yarns, polyesters with improved hygroscopicity and water absorption, synthetic fibers such as polyamides, and the like may be used. The cross-sectional shape of the fiber includes a round shape, a triangular shape, an L shape, a T shape, a Y shape, a W shape, a polygonal shape such as a flat leaf shape, a dogbone shape, a multileaf shape, a hollow shape, and an indeterminate shape. The form of the fiber may be any of raw yarn (unprocessed yarn), spun yarn, twisted yarn, false twisted yarn, fluid injection processed yarn, etc., and may be a multifilament yarn or a monofilament yarn. Two or more materials and / or different cross-sections and forms may be mixed and used by known composite means such as entanglement, twisting, composite false twisting, and knitting.

肌触り等の快適性から吸湿性や吸水性に優れたものがより好ましく用いられるが、特に連結糸にモノフィラメント糸を用いる場合、編地表面にモノフィラメント糸が露出しないように、マルチフィラメントの仮撚加工糸、紡績糸等の嵩高糸を用いて被覆率を上げることが好ましい。特にW型や扁平の断面形状を有する糸がしなやかな表面とするために好ましく、W型は吸水速乾性も付与できるためより好ましい。   Those with excellent hygroscopicity and water absorption from comfort such as touch are more preferably used, but especially when using monofilament yarn for the connecting yarn, multifilament false twisting so that the monofilament yarn is not exposed on the surface of the knitted fabric It is preferable to increase the coverage by using a bulky yarn such as yarn or spun yarn. In particular, a thread having a W shape or a flat cross-sectional shape is preferable for providing a supple surface.

又、裏面(肌に接触しない面)の編地については特に制限は無く、表面の編地と同様の繊維素材、断面、形態のものを用いることができる。
表裏の編地を構成する繊維素材の好ましい繊度は、50〜300dtex、特に100〜250dtexが好ましい。構成する繊維の単糸繊度は1〜7dtex、特に2〜6dtexが好ましい。
Moreover, there is no restriction | limiting in particular about the knitted fabric of a back surface (surface which does not contact skin), The thing of the same fiber material, a cross section, and a form as the knitted fabric of a surface can be used.
The fineness of the fiber material constituting the front and back knitted fabrics is preferably 50 to 300 dtex, particularly preferably 100 to 250 dtex. The single yarn fineness of the constituent fibers is preferably 1 to 7 dtex, particularly 2 to 6 dtex.

更に、これら表裏の編地を連結する連結糸としては、モノフィラメント糸が好ましく、ポリエチレンテレフタレート系繊維、ポリトリメチレンテレフタレート系繊維、ポリブチレンテレフタレート系繊維等のポリエステル系繊維、ポリアミド系繊維、ポリプロピレン系繊維、ポリ塩化ビニル系繊維、ポリエステル系エラストマー繊維等、任意の素材の繊維を用いることができるが、このうちポリトリメチレンテレフタレート系繊維を連結糸の少なくとも一部に用いると、得られる編地は、弾力感のあるクッション性を有し、繰り返し或いは長時間圧縮後のクッション性の耐久性が良好となり好ましい。繊維の断面形状は、丸型、三角、L型、T型、Y型、W型、八葉型、偏平、ドッグボーン型等の多角形型、多葉型、中空型や不定形なものでもよいが、丸型断面が立体編物の圧縮耐久性を向上させる上で好ましい。   Furthermore, as the connecting yarn for connecting the front and back knitted fabrics, monofilament yarn is preferable, polyester fiber such as polyethylene terephthalate fiber, polytrimethylene terephthalate fiber, polybutylene terephthalate fiber, polyamide fiber, polypropylene fiber, etc. , Fibers of any material such as polyvinyl chloride fiber, polyester elastomer fiber, etc. can be used, but when polytrimethylene terephthalate fiber is used for at least a part of the connecting yarn, the resulting knitted fabric is: It has a cushioning property with elasticity, and the durability of the cushioning property after repeated or long-time compression is good, which is preferable. The cross-sectional shape of the fiber may be round, triangular, L-shaped, T-shaped, Y-shaped, W-shaped, Yaba-shaped, flat-shaped, dog-bone-shaped, etc., multi-leafed, hollow, or irregular Although it is good, a round cross section is preferable for improving the compression durability of the three-dimensional knitted fabric.

連結糸は、モノフィラメント糸100%が最適であるが、マルチフィラメント原糸やその仮撚加工糸を混用してもよく、その際はモノフィラメント糸が30質量%以上、特に50質量%以上で構成するのが好ましい。
連結糸の好ましい太さは、モノフィラメント糸の場合は20〜500dtex、特に30〜300dtexが好ましく、マルチフィラメント糸の場合は総繊度では20〜300dtex、特に30〜200dtexが好ましい。単糸繊度は1〜7dtex、特に2〜6dtexが好ましい。
The connecting yarn is optimally 100% monofilament yarn, but a multifilament raw yarn or false twisted yarn may be mixed, and in this case, the monofilament yarn is composed of 30% by mass or more, particularly 50% by mass or more. Is preferred.
The preferred thickness of the connecting yarn is 20 to 500 dtex, particularly 30 to 300 dtex in the case of monofilament yarn, and 20 to 300 dtex, particularly 30 to 200 dtex in terms of the total fineness in the case of multifilament yarn. The single yarn fineness is preferably 1 to 7 dtex, particularly 2 to 6 dtex.

連結糸の180℃乾熱収縮率は、5%以上、25%以下、特に、8%以上、20%以下が好ましい。尚、180℃乾熱収縮率とは、編成前の糸を180℃で30分間乾熱した時の糸の収縮率をいう。更に、連結糸の突出防止のため、表糸との180%乾熱収縮率の差は、連結糸の方が収縮を大きくする必要があり、1%以上、より好ましくは、3%以上連結糸の方を大きくすることが望ましい。   The 180 ° C. dry heat shrinkage of the connecting yarn is preferably 5% or more and 25% or less, and particularly preferably 8% or more and 20% or less. The 180 ° C. dry heat shrinkage refers to the shrinkage of the yarn when the yarn before knitting is dry heated at 180 ° C. for 30 minutes. Furthermore, in order to prevent protrusion of the connecting yarn, the difference in the 180% dry heat shrinkage from the front yarn needs to be larger in the connecting yarn, and the connecting yarn needs to be larger than 1%, more preferably more than 3%. It is desirable to make this larger.

連結糸の密度については、立体編物2.54cm平方(6.45cm)の面積中にある連結糸の本数をN(本/6.45cm)、連結糸のdtexをT(g/1×106cm)、連結糸の比重をρ(g/cm3)とした時、立体編物6.45cmの面積中にある連結糸の総断面積(N・ T/1×106・ρ)が0.01〜0.3cm2が好ましく、より好ましくは0.03〜0.2cm2である。この範囲に設定することによって、適度な剛性による良好なクッション性を有するものとなる。
又、本発明の表裏の編地または連結糸に用いる繊維は、未着色でもよく、着色されていてもよい。
Regarding the density of the connecting yarn, the number of connecting yarns in an area of 2.54 cm square (6.45 cm 2 ) of a three-dimensional knitted fabric is N (lines / 6.45 cm 2 ), and the dtex of the connecting yarn is T (g / 1 × 10 6 cm), when the specific gravity of the connecting yarn is ρ 0 (g / cm 3 ), the total cross-sectional area of the connecting yarn in the area of the solid knitted fabric 6.45 cm 2 (N · T / 1 × 10 6 · ρ 0) is preferably 0.01~0.3cm 2, more preferably 0.03~0.2cm 2. By setting to this range, it will have the favorable cushioning property by moderate rigidity.
The fibers used for the front and back knitted fabrics or connecting yarns of the present invention may be uncolored or colored.

立体編物の構造について説明すると、本発明の立体編物は、相対する2列の針床を有する編機で編成することができ、ダブルラッセル編機、ダブル丸編機、Vベッドを有する横編機等で編成できるが、寸法安定性のよい立体編物を得るには、ダブルラッセル編機を用いるのが好ましい。編機のゲージは9ゲージから28ゲージまでが好ましく用いられる。   The structure of the three-dimensional knitted fabric will be described. The three-dimensional knitted fabric of the present invention can be knitted by a knitting machine having two rows of needle beds facing each other. A double raschel knitting machine, a double circular knitting machine, and a flat knitting machine having a V bed In order to obtain a three-dimensional knitted fabric with good dimensional stability, it is preferable to use a double raschel knitting machine. The gauge of the knitting machine is preferably 9 gauge to 28 gauge.

立体編物の表裏の編地は、編組織は同一である必要は無く、異なる編組織でもよく、4角、6角等のメッシュ編地、マーキゼット編地等複数の開孔部を有する編地にして軽量性、通気性を向上させてもよいが、表面を平坦な組織あるいはメッシュひとつ分の開孔面積が0.13cm2以下の細かいメッシュ組織にして肌触りを良好にしたものが好ましい。又、表面を起毛するとより肌触りの良好なものが得られる。裏面の編組織は、開孔部のあるメッシュ組織であることが通気性を向上させるためには好ましいが、平坦な構造でも立体構造により通気性は確保されるため、特に限定されるものではない。
又、立体編物は、表裏の少なくとも一方の編地のタテ方向及び/又はヨコ方向に挿入糸(モノフィラメント糸及び又はマルチフィラメント糸)が直線状に挿入されていてもよい。
The knitted fabrics on the front and back sides of the three-dimensional knitted fabric do not need to have the same knitted structure, and may be different knitted structures. Light weight and air permeability may be improved, but a surface having a flat structure or a fine mesh structure having an opening area of one mesh of 0.13 cm 2 or less and having good touch is preferable. Further, when the surface is raised, a material having a better touch can be obtained. The knitted structure on the back surface is preferably a mesh structure having an opening, in order to improve the air permeability, but is not particularly limited because the air permeability is ensured by a three-dimensional structure even in a flat structure. .
In the three-dimensional knitted fabric, insertion yarns (monofilament yarns and / or multifilament yarns) may be linearly inserted in the warp direction and / or the transverse direction of at least one of the front and back knitted fabrics.

連結糸は、表裏の編地中にループ状の編目を形成してもよく、表裏編地に挿入組織状に引っかけた構造でもよいが、少なくとも2本の連結糸が表裏の編地を互いに逆方向に斜めに傾斜して、クロス状(X状)やトラス状に連結することが、立体編物の形態安定性を向上させる上で好ましい。又、表裏糸と連結糸のランナー長のバランスは、連結糸の出現面積に大きな影響を及ぼすため非常に重要である。   The connecting yarns may be looped stitches formed on the front and back knitted fabrics, or may have a structure in which they are hooked on the front and back knitted fabrics, but at least two connecting yarns reverse the knitted fabrics on the front and back sides. In order to improve the form stability of the three-dimensional knitted fabric, it is preferable to incline in the direction and connect it in a cross shape (X shape) or a truss shape. Further, the balance between the runner lengths of the front and back yarns and the connecting yarn is very important because it greatly affects the appearance area of the connecting yarn.

立体編物の厚みは目的に応じて任意に設定できるが、水分放出性を考慮すると、厚みは1〜12mmが好ましく、特に2〜10mmがより好ましい。
着色方法は、未着色の糸をかせやチーズ状で糸染めする方法(先染め)、紡糸前の原液に顔料、染料等を混ぜて着色する方法(原液着色)、立体編物状で染色したりプリントする方法等によって着色することができる。
The thickness of the three-dimensional knitted fabric can be arbitrarily set according to the purpose. However, in consideration of moisture release properties, the thickness is preferably 1 to 12 mm, and more preferably 2 to 10 mm.
Coloring methods include dying uncolored yarn in the form of skein or cheese (dyeing), coloring by mixing pigments, dyes, etc. in the stock solution before spinning (dye solution coloring), dyeing in three-dimensional knitting It can be colored by a printing method or the like.

立体編物の仕上げ加工方法は、立体編物を未着色で用いる場合や、先染め糸や原液着色糸を使用した立体編物の場合は生機をプレヒートセット、精練、ヒートセット等の工程を通して仕上げることができる。通常は生機を精練、ヒートセットする工程であるが、プレヒートセットを入れることで、連結糸が締まり、表面に突出するのを防ぐことができる。又、連結糸或いは表裏糸のいずれかが未着色の立体編物の場合は、生機をプレヒートセット、精練、染色、ヒートセット等の工程を通して仕上げることができる。
仕上げ加工後の立体編物は、融着、縫製、樹脂加工等の手段で端部を処理したり、熱成形等により所望の形状にして用いることができる。
3D knitting finish processing method can be finished through preheating set, scouring, heat setting, etc. when using 3D knitted fabric uncolored or 3D knitted fabric using dyed yarn or stock colored yarn . Usually, it is a process of scouring and heat setting the raw machine, but by inserting a preheat set, it is possible to prevent the connecting yarn from being tightened and protruding to the surface. Further, when either the connecting yarn or the front and back yarns are uncolored solid knitted fabric, the raw machine can be finished through processes such as preheat setting, scouring, dyeing, and heat setting.
The finished three-dimensional knitted fabric can be used in a desired shape by processing the end by means of fusion, sewing, resin processing, or by thermoforming.

クッション材として表面の立体編物と組み合わせる他素材としては、天然綿、合成繊維綿、又はこれらの繊維を複合した綿、並びにこれらの繊維綿を適宜圧縮した綿やそれらの綿に合成樹脂を施して圧縮回復性を改良したもの、または、発泡ポリウレタン、発泡ポリエチレン、発泡ポリスチレン等の発泡体、並びにこれらの発泡体と綿とを組み合わせたもの、または、熱可塑性樹脂や熱可塑性弾性樹脂からなる繊維が互いに不規則に交絡し、交絡により接触した接点を形成する厚さが5〜50mm程度の立体的構造体等が挙げられる。表面素材と同様あるいは類似の表裏二層の編地と該二層の編地を連結する連結糸から構成された立体編物であってもよい。又、それらを表面材としての立体編物と一体化させるために綿布や合成繊維布等を使用する場合もある。   Other materials to be combined with the surface knitted fabric as a cushioning material include natural cotton, synthetic fiber cotton, or a combination of these fibers, as well as cottons obtained by appropriately compressing these fiber cottons, and synthetic resins applied to those cottons. What has improved compression recovery, or foams such as foamed polyurethane, foamed polyethylene, foamed polystyrene, etc., and a combination of these foams and cotton, or fibers made of thermoplastic resin or thermoplastic elastic resin Examples thereof include a three-dimensional structure having a thickness of about 5 to 50 mm that forms a contact point that is entangled irregularly and contacted by entanglement. It may be a three-dimensional knitted fabric composed of two layers of front and back knitted fabrics similar to or similar to the surface material and connecting yarns connecting the two layers of knitted fabrics. Moreover, in order to integrate them with the three-dimensional knitted fabric as the surface material, a cotton cloth or a synthetic fiber cloth may be used.

立体編物の肌接触面に当たる表面のMMD値の経緯平均値は、0.001以上、0.04以下好ましくは0.001以上、0.03以下である。MMD値とは、表面の凹凸状態を示す数値であり、大きい程凹凸が大きいことを示す。MMD値の評価は、カトーテック株式会社製「摩擦感テスターKES−SE」を使用し、感度H、試験台移動速度1.00mm/秒、摩擦静荷重50gf、摩擦子は指先を模した装置付属のものとし、温度20℃、湿度65%RHの環境下で実施したものである。この範囲より大きい場合では、立体編物であったとしても肌への刺激が大きく、発汗時でなくても皮膚障害を発生させる危険性があり、この範囲より小さい場合は、すべり過ぎたり、あるいは、発汗時に肌へ貼り付いて不快と感じる。又、編地の経方向のMMD値は0.001以上、0.04以下が好ましく、より好ましくは0.005以上、0.02以下であり、編地の緯方向のMMD値は0.001以上、0.06以下が好ましく、より好ましくは0.005以上、0.04以下である。平面織物あるいは平面編物では空気層が非常に少なく、発生した汗が皮膚表面に残り、皮膚をふやかせて耐久性を低下させ、本発明のMMD値の範囲であったとしても肌刺激を受けやすくなってしまう。従って、皮膚の蒸れによる耐久性低下を抑制するためには、立体編物であることが非常に重要で、必要不可欠な条件であるといえる。   The background average value of the MMD value of the surface corresponding to the skin contact surface of the three-dimensional knitted fabric is 0.001 or more and 0.04 or less, preferably 0.001 or more and 0.03 or less. The MMD value is a numerical value indicating the uneven state of the surface, and the larger the value, the larger the unevenness. The MMD value is evaluated by using “Friction Sense Tester KES-SE” manufactured by Kato Tech Co., Ltd., with sensitivity H, test table moving speed 1.00 mm / sec, static friction load 50 gf, and a friction piece attached to the device simulating a fingertip. This was carried out in an environment with a temperature of 20 ° C. and a humidity of 65% RH. If it is larger than this range, even if it is a three-dimensional knitted fabric, there is a great irritation to the skin, and there is a risk of causing skin damage even when not sweating. Feels uncomfortable by sticking to the skin when sweating. Also, the MMD value in the warp direction of the knitted fabric is preferably 0.001 or more and 0.04 or less, more preferably 0.005 or more and 0.02 or less, and the MMD value in the weft direction of the knitted fabric is 0.001. Above, 0.06 or less is preferable, More preferably, it is 0.005 or more and 0.04 or less. In flat woven fabrics or flat knitted fabrics, the air layer is very small, and the generated sweat remains on the skin surface, causing the skin to soften and lowering the durability. Even if it is within the MMD value range of the present invention, it is subject to skin irritation. It becomes easy. Therefore, it can be said that a three-dimensional knitted fabric is a very important and indispensable condition in order to suppress a decrease in durability due to skin stuffiness.

尚、本発明の立体編物においては編地表面のMMD値の経緯平均値が0.001以上、0.04以下である必要があるが、ここにいう編地表面とはクッション材として使用する場合に人体に接する面のことをいう。表裏の区別がつかない場合は、いずれか一方の面のMMD値の経緯平均値が範囲内であればよく、他方の面のMMD値の経緯平均値は限定されるものではない。   In the three-dimensional knitted fabric of the present invention, the mean value of the MMD value of the knitted fabric surface needs to be 0.001 or more and 0.04 or less, but the knitted fabric surface here is used as a cushioning material. The surface that touches the human body. If the front and back sides cannot be distinguished, it is only necessary that the background average value of the MMD value of any one surface is within the range, and the background average value of the MMD value of the other surface is not limited.

上記のMMD値を達成するために、立体編物の表面の編地を構成する糸、連結部を構成する糸、立体編物の表面状態等について鋭意検討した。その結果、総カバーファクター、メッシュ開孔面積、連結糸出現面積割合(A)と連結糸直径(D)の積(A×D)という3つのファクター全てが特定の範囲を満たすことで、上記MMD値を達成することが可能であることを見出した。この3つのファクターについて、以下に詳細に説明する。   In order to achieve the above-mentioned MMD value, intensive studies were made on the yarn constituting the knitted fabric on the surface of the three-dimensional knitted fabric, the yarn constituting the connecting portion, the surface state of the three-dimensional knitted fabric, and the like. As a result, all the three factors of the total cover factor, mesh opening area, connected yarn appearance area ratio (A) and connected yarn diameter (D) (A × D) satisfy a specific range, so that the MMD We found that it was possible to achieve the value. These three factors will be described in detail below.

まず、好ましいMMD値を達成するために必要な一つ目のファクターは、立体編物の総カバーファクター(TCF)である。TCFは、650以上、1550以下、特に、800以上、1200以下であることが好ましい。
尚、ここで、総カバーファクター(TCF)とは、下記式で計算されるものである。
First, the first factor necessary to achieve a preferable MMD value is the total cover factor (TCF) of the three-dimensional knitted fabric. TCF is preferably 650 or more and 1550 or less, particularly 800 or more and 1200 or less.
Here, the total cover factor (TCF) is calculated by the following equation.

総カバーファクター(TCF)=コースカバーファクター(CCF)+ウェールカバーファクター(WCF)
但し、コースカバーファクター(CCF)=(コース数;本/2.54cm)×(表面の編地を構成する糸条の太さ;dtex)1/2
ウェールカバーファクター(WCF)=(ウェール数;本/2.54cm)×(表面の編地を構成する糸条の太さ;dtex)1/2
尚、表面の編地を構成する糸条の太さとは、表面の編地2.54cm平方(6.45cm)の面積中に存在する編目を構成する糸条の太さをいう。例えば2枚筬から同一の針に2本の表糸が供給されて一つの編目を構成する場合は、2本の表糸の太さを合計した太さをいう。
Total Cover Factor (TCF) = Course Cover Factor (CCF) + Wail Cover Factor (WCF)
However, course cover factor (CCF) = (number of courses; book / 2.54 cm) × (thickness of yarn constituting surface knitted fabric; dtex) 1/2
Wale cover factor (WCF) = (number of wales; number / 2.54 cm) × (thickness of yarn constituting surface knitted fabric; dtex) 1/2
The thickness of the yarn constituting the surface knitted fabric refers to the thickness of the yarn constituting the stitch existing in the area of 2.54 cm square (6.45 cm 2 ) of the surface knitted fabric. For example, when two front yarns are supplied to the same needle from two halves to form one stitch, the thickness is the sum of the thicknesses of the two front yarns.

編目を構成する糸条の太さが異なる場合は、先ず表面の編地2.54cm平方(6.45cm)の面積中に存在する編目の総数(n)と、各編目を構成する糸条の太さ(D1、D2、D3、・・・、Dn;dtex)を測定する。次いで、各編目を構成する糸条の太さの合計(D1+D2+D3+・・・Dn;dtex)を編目の総数(n)で割ったもので表す。
上記記載の総カバーファクターの範囲は、9ゲージ以上、28ゲージ以下の編機を用い、表糸繊度を総dtexで60dtex以上、300dtex以下、単糸dtexで1dtex以上、5dtex以下にすることで達成することができる。
When the thicknesses of the yarns constituting the stitches are different, first, the total number (n) of the stitches existing in the surface area of 2.54 cm square (6.45 cm 2 ) and the yarns constituting each stitch. The thickness (D1, D2, D3,..., Dn; dtex) is measured. Next, the total thickness (D1 + D2 + D3 +... Dn; dtex) of the yarns constituting each stitch is divided by the total number (n) of the stitches.
The range of the total cover factor described above is achieved by using a knitting machine of 9 gauge or more and 28 gauge or less, and setting the surface yarn fineness to 60 dtex or more and 300 dtex or less in total dtex, and 1 dtex or more and 5 dtex or less in single yarn dtex. can do.

次に、好ましいMMD値を達成するために必要な二つ目のファクターは、立体編物表面のメッシュの開孔面積である。最大の開孔面積(メッシュひとつ分)は、0.13cm以下、特に、0.10cm以下であることが好ましい。
ここで、開孔面積とは、立体編物1cmと面積既知の図を描いた紙を合わせて、表面拡大写真(5〜50倍)を直角方向から撮影し、写真をイメージスキャナーでコンピューターに読み込み、画像解析ソフト「高精細画像解析システムIP1000PC」(商品名、旭化成(株)製)を用いて、編地表面のひとつの開孔部と面積既知の図をそれぞれ領域指定し、領域指定したそれぞれの面積の画素数を比較することにより、開孔ひとつ分の面積を算出したものである。
Next, the second factor necessary for achieving a preferable MMD value is the mesh opening area of the surface of the three-dimensional knitted fabric. Maximum open area (mesh one minute), 0.13 cm 2 or less, in particular, is preferably 0.10 cm 2 or less.
Here, the aperture area is 1 cm 2 of a three-dimensional knitted fabric and a paper on which a known area is drawn, and an enlarged surface photograph (5 to 50 times) is taken from a right angle, and the photograph is read into a computer by an image scanner. Using the image analysis software “High-definition image analysis system IP1000PC” (trade name, manufactured by Asahi Kasei Co., Ltd.), specify one area of each hole in the surface of the knitted fabric and a known area, and specify each area. By comparing the number of pixels with the same area, the area for one opening was calculated.

上記記載の最大開孔面積の範囲は、表面を開孔のない編構造とするか、あるいは、8コースリピート以下のメッシュ構造とすることで達成できる。
好ましいMMD値を達成するために必要な三つ目のファクターは、連結糸出現面積割合(A)と連結糸直径(D)の積(A×D)である。A×D値は、0.001以上、1.200以下、特に、0.001以上、0.800以下であることが好ましい。又、連結糸出現面積割合(A)の範囲は30%以下、好ましくは20%以下である。
The range of the maximum hole area described above can be achieved by making the surface a knitted structure having no holes or a mesh structure having an 8-course repeat or less.
A third factor necessary to achieve a preferable MMD value is the product (A × D) of the connected yarn appearance area ratio (A) and the connected yarn diameter (D). The A × D value is preferably 0.001 or more and 1.200 or less, and particularly preferably 0.001 or more and 0.800 or less. The range of the connected yarn appearance area ratio (A) is 30% or less, preferably 20% or less.

ここで、連結糸出現面積割合(A)とは、立体編物1cmの表面拡大写真(5〜50倍)を直角方向から撮影し、写真をイメージスキャナーでコンピューターに読み込み、画像解析ソフト「高精細画像解析システムIP1000PC」(商品名、旭化成(株)製)を用いて、任意の領域を指定し、連結糸が出現している面積が全体の面積に占める割合を、画素数を比較することにより、百分率で算出したものである。但し、連結糸が出現している面積とは、表面材として用いたときに肌に接触する可能性のある部分の面積であり、例えば、開孔部の中に見えて肌に接触する可能性のないものは含めない。また、連結糸直径(D)は、光学顕微鏡を用いて、任意の3箇所を測定し、それらの平均値を算出したものである。 Here, the connected thread appearance area ratio (A) means that a surface enlarged photograph (5 to 50 times) of a solid knitted fabric 1 cm 2 is taken from a right angle direction, and the photograph is read into a computer by an image scanner. By specifying an arbitrary area using "Image Analysis System IP1000PC" (trade name, manufactured by Asahi Kasei Co., Ltd.) and comparing the ratio of the area where the connecting yarn appears to the total area with the number of pixels , Calculated as a percentage. However, the area where the connecting thread appears is the area of the part that may come into contact with the skin when used as a surface material, for example, the possibility that it appears in the opening part and comes into contact with the skin. Do not include anything without. In addition, the connecting yarn diameter (D) is obtained by measuring three arbitrary positions using an optical microscope and calculating an average value thereof.

上記記載のA×D値の範囲を達成するためには、連結糸の180℃乾熱収縮率は、5%以上、25%以下、好ましくは、8%以上、20%以下とし、更に、表糸と連結糸の180℃乾熱収縮率の差を、1%以上、より好ましくは、3%以上連結糸の収縮を大きくして連結糸の出現面積を抑えることが必要である。尚、180℃乾熱収縮率とは、編成前の糸を180℃で30分間乾熱した時の糸の収縮率をいう。更に、使用する糸が上記乾熱収縮率を有するだけでなく、生機を精練及びヒートセットする工程で、通常は生機を精練後にヒートセットするが、精練前にプレヒートセットを入れることで、連結糸が締まり、表面に突出するのを防いで、A×D値を最適な範囲内にすることができる。   In order to achieve the above A × D range, the 180 ° C. dry heat shrinkage of the connecting yarn is 5% or more and 25% or less, preferably 8% or more and 20% or less. It is necessary to reduce the difference in the 180 ° C. dry heat shrinkage between the yarn and the connecting yarn by 1% or more, more preferably by 3% or more to increase the shrinkage of the connecting yarn to suppress the appearance area of the connecting yarn. The 180 ° C. dry heat shrinkage refers to the shrinkage of the yarn when the yarn before knitting is dry heated at 180 ° C. for 30 minutes. Furthermore, the yarn used not only has the above-mentioned dry heat shrinkage rate, but in the process of scouring and heat setting the raw machine, usually the raw machine is heat-set after scouring, but by connecting the preheat set before scouring, the connecting yarn Can be prevented from protruding to the surface, and the A × D value can be within the optimum range.

以下、本発明を実施例で具体的に説明するが、本発明は実施例のみに限定されるものではない。   EXAMPLES Hereinafter, although an Example demonstrates this invention concretely, this invention is not limited only to an Example.

本発明に用いられる評価方法は以下の通りである。
(1)MMD値(凹凸状態)の評価
(イ)評価装置は、カトーテック株式会社製「摩擦感テスターKES−SE」を使用する。評価条件は、感度H、試験台移動速度1.00mm/秒、摩擦静荷重50gf、摩擦子は指先を模した装置付属のものとし、温度20℃、湿度65%RHの環境下で実施する。サンプルサイズは6cm×8cm(8cmの方が測定方向)とし、おもりを乗せて固定し、測定時に移動しないようにする。サンプルは、クッション材の表面編地1枚とし、クッション材使用時に肌接触面となる側を測定する。
The evaluation method used in the present invention is as follows.
(1) Evaluation of MMD value (unevenness state) (a) The evaluation device uses “Friction feeling tester KES-SE” manufactured by Kato Tech Co., Ltd. The evaluation conditions are sensitivity H, test table moving speed 1.00 mm / second, frictional static load 50 gf, and a friction piece attached to the device simulating a fingertip, and is performed in an environment of temperature 20 ° C. and humidity 65% RH. The sample size is 6 cm × 8 cm (8 cm is the measurement direction), and is fixed with a weight so that it does not move during measurement. The sample is one surface knitted fabric of the cushion material, and the side that becomes the skin contact surface when the cushion material is used is measured.

(ロ)上記の測定法にて、経緯2方向をそれぞれ3回測定し、その平均値を求める。
尚、MMD値は、表面の凹凸状態を示す数値であり、数値が大きいほど凹凸が大きく、数値が小さいほど滑らかであることを示す。
(B) Using the above measurement method, measure the background 2 directions three times, and determine the average value.
The MMD value is a numerical value indicating the uneven state of the surface. The larger the numerical value, the larger the unevenness, and the smaller the value, the smoother.

(2)皮膚刺激性の評価
(イ)2cm角の評価生地(クッション材の表面に使用する立体編物またはその比較生地)に水0.5mlを含ませ、被験者の上腕内側部に貼り付ける。この時、製品となったときに肌接触面となる面を肌側となるようにし、幅1cm、長さ4〜6cmの絆創膏2枚で十字になるように固定する。上半身は綿100%の半袖Tシャツを着用し、サンプル貼り付け部に袖が触れないようにする。評価生地を貼り付けた状態で、気温35±2℃、湿度70±5%RH環境下で6時間臥床する。その後の感覚的な皮膚刺激の有無を確認し、更にサンプルを取り除き30分安静後の皮膚の状態変化を観察する。
(2) Evaluation of skin irritation (A) 0.5 cm of water is contained in a 2 cm square evaluation fabric (three-dimensional knitted fabric or a comparative fabric used for the surface of the cushioning material), and is applied to the inner side of the upper arm of the subject. At this time, the surface that becomes the skin contact surface when it becomes a product is made to be the skin side, and it is fixed so as to form a cross with two adhesive bandages having a width of 1 cm and a length of 4 to 6 cm. Wear 100% cotton short-sleeved T-shirt on the upper body so that the sleeve does not touch the sample application area. With the evaluation fabric pasted, the bed is placed for 6 hours in an environment with an air temperature of 35 ± 2 ° C. and a humidity of 70 ± 5% RH. After that, the presence or absence of sensory skin irritation is confirmed, the sample is further removed, and the skin state change after 30 minutes rest is observed.

(ロ)上記評価を5名の被験者について実施し、平均点で評価した。採点基準は、下記の通りである。
3点:かゆみ等の刺激を感じず、皮膚の変化はない
2点:かゆみ等の刺激を感じるが、皮膚の変化はない
1点:かゆみ等の刺激を感じ、かつ、皮膚に発赤等の変化が見られた
(B) The above evaluation was performed on five subjects, and the average score was evaluated. The scoring criteria are as follows.
3 points: no irritation such as itching and no skin change 2 points: irritation such as itching but no skin change 1 point: irritation such as itching and skin redness change has seen

[実施例1]
6枚筬を装備した22ゲージ、釜間4.2mmのダブルラッセル編機を用い、表面の編地を形成する2枚の筬(L1、L2)から167dtex/48fのW型断面のポリエチレンテレフタレート系繊維の仮撚加工糸(旭化成せんい株式会社製、商標「テクノファイン」仮撚加工糸、180℃乾熱収縮率:3%)をいずれもオールインの配列で供給し、裏面の編地を形成する2枚の筬(L5、L6)からも同一の仮撚加工糸をいずれも3イン1アウトの配列で供給し、連結糸を形成するL3の筬から56dtexのナイロン66繊維モノフィラメント糸(180℃乾熱収縮率:18%)をオールインの配列で供給して、表面の編地の密度が33.3コース/2.54cm、24.8ウェール/2.54cmの立体編物の生機を下記組織で編成した。
[Example 1]
Polyethylene terephthalate system with a W-shaped cross section of 167 dtex / 48f from two ridges (L1, L2) forming a surface knitted fabric using a 22 gauge, 4.2 mm double raschel knitting machine equipped with 6 ridges All the fiber false twisted yarn (Asahi Kasei Fiber Co., Ltd., trademark “Technofine” false twisted yarn, 180 ° C. dry heat shrinkage: 3%) is supplied in an all-in arrangement to form the back knitted fabric The same false twisted yarn is supplied from two cocoons (L5, L6) in a 3 in 1 out arrangement, and a 56 dtex nylon 66 fiber monofilament yarn (180 ° C.) is formed from the L3 cocoons that form the connecting yarn. A dry knitting shrinkage rate of 18%) is supplied in an all-in arrangement, and the raw fabric of a three-dimensional knitted fabric with a surface knitted fabric density of 33.3 course / 2.54 cm and 24.8 wale / 2.54 cm Organized by It was.

L1:2422/2022/
L2:2022/4644/
L3:0220/2002/
L5:4420/2224/2220/2242/4468/6664/6668
/6646/
L6:4468/6664/6668/6646/4420/2224/2220
/2242/
得られた生機をプレヒートセットして精練後、再度ヒートセットして、厚み3.5mmの立体編物Aを得た。この立体編物Aは、表面の編地が平坦な組織で、表面の開孔がなく、裏面の編地がメッシュ組織であり、表面の編地密度は、35.0コース/2.54cm、22.2ウェール/2.54cmであった。実施例1で得られた立体編物Aの総カバーファクター、開孔面積およびA×D値、MMD値、肌刺激性評価等の結果を表1に示す。
L1: 2422/2022 /
L2: 2022/4644 /
L3: 0220/2002 /
L5: 4420/2224/2220/2242/4468/6664/6668
/ 6646 /
L6: 4468/6664/6668/6646/4420/2224/2220
/ 2242 /
The obtained raw machine was preheated and refined, and then heatset again to obtain a solid knitted fabric A having a thickness of 3.5 mm. This three-dimensional knitted fabric A has a structure in which the surface knitted fabric is flat, there are no openings in the surface, the knitted fabric on the back surface has a mesh structure, and the surface knitted fabric density is 35.0 course / 2.54 cm, 22 .2 wal / 2.54 cm. Table 1 shows the results of the total cover factor, pore area, A × D value, MMD value, skin irritation evaluation, etc. of the three-dimensional knitted fabric A obtained in Example 1.

立体編物Aの表面のMMD経緯平均値は、表1に示すように0.0200であり、皮膚刺激性を評価した結果は、2.8点と極めて優れ、肌触りも良好なものであった。この立体編物を表面材として使用したクッション材に、発汗する環境下で3時間着座しても、皮膚の刺激は全く感じられず、非常に快適なものであった。   The average value of the MMD background on the surface of the three-dimensional knitted fabric A was 0.0200 as shown in Table 1, and the result of evaluating the skin irritation was 2.8 points, and the touch was also excellent. Even when sitting on a cushion material using this three-dimensional knitted fabric as a surface material in a sweating environment for 3 hours, no skin irritation was felt and it was very comfortable.

[実施例2]
6枚筬を装備した22ゲージ、釜間4.2mmのダブルラッセル編機を用い、裏面の編地を形成する筬(L2)に110dtex/36fのポリエチレンテレフタレート系繊維(旭化成せんい株式会社製)をオールインの配列で供給し、表面の編地を形成する2枚の筬(L5、L6)に110dtex/60fのW型断面のポリエチレンテレフタレート系繊維の仮撚加工糸(旭化成せんい株式会社製、商標「テクノファイン」仮撚加工糸、180℃乾熱収縮率:3%)をいずれも3イン1アウトの配列で供給し、連結糸を形成するL3の筬に56dtexのナイロン6繊維モノフィラメント糸をオールインの配列で供給して、表面の編地の密度が37.6コース/2.54cm、25.4ウェール/2.54cmの立体編物の生機を下記組織で編成した。
[Example 2]
Using a 22 gauge, 4.2 mm double raschel knitting machine equipped with 6 ridges, 110 dtex / 36f polyethylene terephthalate fiber (manufactured by Asahi Kasei Fibers Co., Ltd.) is used on the ridge (L2) that forms the back knitted fabric. A false twisted yarn made of polyethylene terephthalate fiber with a W-shaped cross section of 110 dtex / 60f on two ridges (L5, L6) that are supplied in an all-in arrangement and form a surface knitted fabric (trade name, manufactured by Asahi Kasei Fibers Co., Ltd.) "Technofine" false twisted yarn, 180 ° C dry heat shrinkage: 3%) are all supplied in a 3 in 1 out array, and 56 dtex nylon 6 fiber monofilament yarn is all on the L3 heel forming the connecting yarn Supplied in an in-line arrangement, the raw fabric of solid knitted fabric with a surface knitted fabric density of 37.6 courses / 2.54 cm, 25.4 wales / 2.54 cm It was organized.

L2:2422/2022/
L3:0220/2002/
L5:4420/2224/2220/2242/4468/6664/6668/6
646/
L6:4468/6664/6668/6646/4420/2224/2220/2
242/
得られた生機をプレヒートセットして精練後、再度ヒートセットして、厚み3.1mmの立体編物Bを得た。
L2: 2422/2022 /
L3: 0220/2002 /
L5: 4420/2224/2220/2242/4468/6664/6668/6
646 /
L6: 4468/6664/6668/6646/4420/2224/2220/2
242 /
The obtained raw machine was preheated and scoured, and then heatset again to obtain a solid knitted fabric B having a thickness of 3.1 mm.

得られた立体編物Bの表面の編地密度は、41.0コース/2.54cm、20.0ウェール/2.54cmであった。この立体編物Bの評価結果を表1に示す。
表面にひとつの面積が0.01cmの開孔がある立体編物Bの表面のMMD経緯平均値は、0.0241であり、皮膚刺激性を評価した結果、開孔があるため立体編物Aよりは若干劣るものの、2.6点と優れ、肌触りも良好なものであった。
The knitted fabric density on the surface of the obtained three-dimensional knitted fabric B was 41.0 course / 2.54 cm, 20.0 wal / 2.54 cm. The evaluation results of this three-dimensional knitted fabric B are shown in Table 1.
The average value of the MMD background on the surface of the three-dimensional knitted fabric B having an opening having an area of 0.01 cm 2 on the surface is 0.0241. Although it was a little inferior, it was excellent with 2.6 points and the touch was also favorable.

[実施例3]
連結糸に32dtexのポリエチレンテレフタレートモノフィラメント糸(180℃乾
熱収縮率:15%)を2本引き揃えて用いた以外は、実施例2の立体編物Bと同様に編成
し加工して立体編物Cを得た。評価結果を表1に示す。立体編物Bより連結糸の繊度が低
下した結果、A×D値がより良好な範囲となり、MMD経緯平均値は0.0189と若干低下した。肌刺激性は2.8点と極めて優れたものであった。
[Example 3]
The three-dimensional knitted fabric C is knitted and processed in the same manner as the three-dimensional knitted fabric B of Example 2 except that two 32 dtex polyethylene terephthalate monofilament yarns (180 ° C. dry heat shrinkage: 15%) are used as the connecting yarn. Obtained. The evaluation results are shown in Table 1. As a result of the fineness of the connecting yarn being lower than that of the three-dimensional knitted fabric B, the A × D value was in a better range, and the MMD background average value was slightly lowered to 0.0189. The skin irritation was very excellent at 2.8 points.

[比較例1]
表編地用糸の繊度を56dtex/60fとした以外は、実施例1の立体編物Aと同様に編成し加工して得られた立体編物について評価を行った。その結果を表1に示す。開孔面積とA×D値は範囲内であったが、総カバーファクターは範囲外となった。MMD値も範囲外となり、肌刺激性は1.8点と劣ったものであった。
[Comparative Example 1]
The three-dimensional knitted fabric obtained by knitting and processing in the same manner as the three-dimensional knitted fabric A of Example 1 was evaluated except that the fineness of the surface knitted fabric yarn was set to 56 dtex / 60f. The results are shown in Table 1. The aperture area and A × D value were within the range, but the total cover factor was out of range. The MMD value was also out of the range, and the skin irritation was inferior at 1.8 points.

[比較例2]
連結糸の180℃乾熱収縮率が3%である以外は、実施例1の立体編物Aと同様に編成し加工して得られた立体編物について評価を行った。その結果を表1に示す。総カバーファクターと開孔面積は範囲内であったが、連結糸飛び出し面積(A)が大きく、A×D値は範囲外となった。MMD値も範囲外となり、肌刺激性は1.6点と劣ったものであった。
[Comparative Example 2]
The three-dimensional knitted fabric obtained by knitting and processing in the same manner as the three-dimensional knitted fabric A of Example 1 was evaluated except that the 180 ° C. dry heat shrinkage of the connecting yarn was 3%. The results are shown in Table 1. The total cover factor and the aperture area were within the range, but the connected yarn pop-out area (A) was large, and the A × D value was out of the range. The MMD value was also outside the range, and skin irritation was inferior at 1.6 points.

[比較例3]
プレヒートセットをしない以外は、立体編物Aと同様に編成し加工して得られた立体編物について評価を行った。その結果を表1に示す。総カバーファクターと開孔面積は範囲内であったが、連結糸飛び出し面積(A)が大きく、A×D値は範囲外となった。MMD値も範囲外となり、肌刺激性は1.8点と劣ったものであった。
[Comparative Example 3]
A solid knitted fabric obtained by knitting and processing in the same manner as the solid knitted fabric A was evaluated except that the preheat setting was not performed. The results are shown in Table 1. The total cover factor and the aperture area were within the range, but the connected yarn pop-out area (A) was large, and the A × D value was out of the range. The MMD value was also out of the range, and the skin irritation was inferior at 1.8 points.

[比較例4]
総カバーファクターとA×D値は範囲内であるが、メッシュ構造が12コースリピートで表面の開孔面積が好ましい範囲よりも大きい立体編物Cについて評価を行った。その結果を表1に示す。表面のMMD経緯平均値が0.0501であり、肌刺激性は1.6点と劣ったものであった。
[Comparative Example 4]
Although the total cover factor and the A × D value were within the range, the three-dimensional knitted fabric C having a mesh structure of 12-course repeat and having a surface opening area larger than the preferred range was evaluated. The results are shown in Table 1. The average MMD history on the surface was 0.0501, and the skin irritation was inferior at 1.6 points.

[比較例5]
立体ではない二次元の綿織物でMMD経緯平均値が0.0221のものを評価した。その結果、肌刺激性は1.6点で、MMD値が範囲内の立体編地よりも劣ったものであった。
[Comparative Example 5]
A non-solid two-dimensional cotton fabric having an MMD history average value of 0.0221 was evaluated. As a result, the skin irritation was 1.6 points, and the MMD value was inferior to that of the solid knitted fabric within the range.

Figure 0004785459
Figure 0004785459

本発明のクッション材は、表面材のざらつきが小さく水分放出性に優れたクッション材であり、臥床又は着座を長時間続け、発汗した場合においても肌刺激が少なく、快適性にも優れたクッション材であるため、特に敷き寝具やシーツに最適であるが、枕や座布団、乗り物用シート、椅子等を含む一般のクッション材やそれらのカバー材として好適に利用できる。
The cushioning material of the present invention is a cushioning material that has a small surface roughness and excellent moisture release properties, and is a cushioning material that has low skin irritation even when sweating or sitting for a long time and sweating, and excellent comfort. Therefore, it is particularly suitable for bedding and sheets, but it can be suitably used as a general cushioning material including pillows, cushions, vehicle seats, chairs, etc., and cover materials thereof.

Claims (1)

表裏二層の編地と、該二層の編地を連結する連結糸とから構成された立体編物を有する表面材を持ったクッション材であって、立体編物の総カバーファクター(TCF)が650以上、1550以下、立体編物表面のメッシュの開孔面積が0.13cm 2 以下、立体編物の連結糸出現面積割合(A)と連結糸直径(D)の積(A×D)が0.001以上、1.200以下(但し、Aは30以下)であり、該表面材の皮膚接触面のMMD値の経緯平均値が0.001以上、0.04以下であることを特徴とするクッション材(但し、上記MMD値は、カトーテック株式会社製「摩擦感テスターKES−SE」を使用し、評価条件は、感度H、試験台移動速度1.00mm/秒、摩擦静荷重50gf、摩擦子は指先を模した装置付属のものとし、温度20℃、湿度65%RHの環境下で測定した値とする)。 A cushioning material having a surface material having a three-dimensional knitted fabric composed of two layers of front and back knitted fabrics and connecting yarns connecting the two knitted fabrics, and the total cover factor (TCF) of the three-dimensional knitted fabric is 650 Above, 1550 or less, the opening area of the mesh on the surface of the three-dimensional knitted fabric is 0.13 cm 2 or less, and the product (A × D) of the connecting yarn appearance area ratio (A) and the connecting yarn diameter (D) of the three-dimensional knitted fabric is 0.001. The cushioning material is characterized in that it is 1.200 or less (where A is 30 or less), and the mean value of the MMD value of the skin contact surface of the surface material is 0.001 or more and 0.04 or less. (However, the above MMD value uses "Friction Sense Tester KES-SE" manufactured by Kato Tech Co., Ltd., and the evaluation conditions are sensitivity H, test table moving speed 1.00 mm / sec, friction static load 50 gf, and friction element: It should come with a device that simulates a fingertip and And a value measured in an environment of a temperature of 20 ° C. and a humidity of 65% RH).
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