JP5051488B2 - Sound absorbing fabric and sound absorbing face material - Google Patents

Sound absorbing fabric and sound absorbing face material Download PDF

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JP5051488B2
JP5051488B2 JP2004012250A JP2004012250A JP5051488B2 JP 5051488 B2 JP5051488 B2 JP 5051488B2 JP 2004012250 A JP2004012250 A JP 2004012250A JP 2004012250 A JP2004012250 A JP 2004012250A JP 5051488 B2 JP5051488 B2 JP 5051488B2
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fabric
sound
absorbing
yarn
elongation
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JP2005204739A (en
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具樹 藤川
敦 綿貫
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TB Kawashima Co Ltd
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Description

本発明は、主として車両内装材として使用される吸音布帛に関するものである。   The present invention relates to a sound absorbing fabric mainly used as a vehicle interior material.

ポリウレタンフォームや繊維積層体等の嵩高で弾力性に富む多孔質弾性体は、吸音材やクッション材として使用されている。パイル布帛は、表面がパイルに覆われていて手触りがよく、一般の布帛に比して表面が摩耗し難く、吸音性と弾力性に富むことからして、多孔質弾性体の表面材に好適とされている。パイル布帛を多孔質弾性体の表面材に使用する場合には、多孔質弾性体の吸音特性を損なわないようにするために、パイル布帛のＪＩＳ−Ｌ−１０９６（８．２７．１−Ａ法）に規定される通気度（以下、単に通気度、又は、通気性と言う。）を５ｃｍ3 ／ｃｍ2 ・ｓｅｃ以上にすべきことが公知である（例えば、特許文献１と特許文献２参照）。
特開２００２−２１９９８９号公報（要約書） 特許第３１１４９２号公報（特許請求の範囲） Porous elastic bodies with high bulkiness and elasticity such as polyurethane foams and fiber laminates are used as sound absorbing materials and cushion materials. Pile fabric is suitable for the surface material of porous elastic body because the surface is covered with pile and feels good, the surface is less likely to be worn compared with general fabric, and it is rich in sound absorption and elasticity. It is said that. When the pile fabric is used as the surface material of the porous elastic body, in order not to impair the sound absorption characteristics of the porous elastic body, JIS-L-1096 (8.27.1-A method) of the pile fabric is used. ) (Hereinafter simply referred to as air permeability or air permeability) should be 5 cm 3 / cm 2 · sec or more (see, for example, Patent Document 1 and Patent Document 2). ).
JP 2002-219989 A (Abstract) Japanese Patent No. 311492 (Claims)

パイル布帛の通気度を高くするには、パイルを係止している基布の布目（織目、編目）を大きくする、即ち、経糸密度と緯糸密度、或いは、ウエール間隔（密度）とコース間隔（密度）を粗くすべきことになる。しかし、そうすると、基布が弱く伸び易くなる。特に、車両椅子張や車両カーペットとして多孔質弾性体に重ね合わせて使用するパイル布帛の基布を粗くすると、伸縮による皺がパイル面に発生し、車両内装材に要求される耐久性を欠くものとなる。そして、多孔質弾性体にパイル布帛を重ねた車両内装材は、重厚で嵩張り、軽量化が求められる車両内装材としては好ましいものとは言えない。   In order to increase the air permeability of the pile fabric, the fabric (texture, stitch) of the base fabric that holds the pile is increased, that is, the warp density and the weft density, or the wale interval (density) and the course interval. (Density) should be rough. However, when doing so, the base fabric is weak and easily stretched. In particular, when the pile fabric base fabric used to overlap a porous elastic body as a vehicle chair tension or vehicle carpet is roughened, wrinkles due to expansion and contraction occur on the pile surface and lack the durability required for vehicle interior materials It becomes. And the vehicle interior material which piled the pile fabric on the porous elastic body cannot be said to be preferable as a vehicle interior material which is heavy and bulky and requires weight reduction.

そこで本発明は、多孔質弾性体に代わる吸音材やクッション材として使用することが出来、表面を被覆する表面材を格別必要とせず、軽くて嵩張らない吸音面材を提供しようとするものである。   Accordingly, the present invention is intended to provide a light-absorbing surface material that can be used as a sound-absorbing material or a cushion material instead of a porous elastic body, does not require a surface material that covers the surface, and is light and not bulky. .

本発明に係る吸音布帛は、布帛に吸音層を構成する糸条（以下、その糸条を本発明では”吸音糸条”と言う。）が単糸繊度３０ｄｔｅｘ以下の繊維によって構成されており、その吸音糸条１１が基布１３から起立して繊維密度が０．０５ｇ／ｃｃ以上であり、繊維目付が３５０ｇ／ｍ2 以上の吸音層１２を構成しており、その基布１３に弾性糸条が適用されており、その弾性糸条の連続方向における吸音布帛の１０％伸長時の応力Ｆ（単位：Ｎ／５ｃｍ）が１５０≦Ｆ≦６００であることを第１の特徴とする。 In the sound-absorbing fabric according to the present invention, the yarn constituting the sound-absorbing layer in the fabric (hereinafter, the yarn is referred to as “sound-absorbing yarn” in the present invention) is composed of fibers having a single yarn fineness of 30 dtex or less. The sound absorbing yarn 11 is erected from the base fabric 13 to form a sound absorbing layer 12 having a fiber density of 0.05 g / cc or more and a fiber basis weight of 350 g / m 2 or more. Article have been applied, the elastic yarns of the backing fabric in the continuous direction at 10% elongation stress F (unit: N / 5 cm) is the first feature to 0.99 ≦ F ≦ 600 der Rukoto.

本発明に係る吸音布帛の第２の特徴は、上記第１の特徴に加えて、弾性糸条の破断伸度が６０（％）以上であり、その１５％伸長後の弾性回復率が９０（％）以上であり、前記弾性糸条の連続する方向における吸音布帛の伸度０％から１０％伸長時までのヒステリシスの加圧曲線（ｆ 0 ）によって表される荷重伸度関係式ｆ 0 （ρ）の積分値（Ｖ）と、前記弾性糸条の連続する方向における吸音布帛の１０％伸長時から伸度０％までのヒステリシスの減圧曲線（ｆ 1 ）によって表される荷重伸度関係式ｆ 1 （ρ）の積分値（Ｗ）との差として表される吸音布帛のヒステリシスロス（Ｃ＝Ｖ−Ｗ）における前記ヒステリシスの加圧曲線（ｆ 0 ）によって表される荷重伸度関係式ｆ 0 （ρ）の積分値（Ｖ）に占める吸音布帛のヒステリシスロス率（ΔＥ＝１００×Ｃ／Ｖ＝１００×（Ｖ−Ｗ）／Ｖ）が２０〜４５％（２０≦ΔＥ≦４５）である点にある。 The second feature of the sound-absorbing fabric according to the present invention is that, in addition to the first feature, the breaking elongation of the elastic yarn is 60 (%) or more, and the elastic recovery rate after 15% elongation is 90 ( %) ), And the load elongation relational expression f 0 ( f 0 ) represented by a pressurization curve (f 0 ) of hysteresis from 0% to 10% elongation of the sound absorbing fabric in the continuous direction of the elastic yarn. ρ) integral value (V) and a load elongation relation expressed by a decompression curve (f 1 ) of hysteresis from 10% elongation to 0% elongation of the sound absorbing fabric in the continuous direction of the elastic yarn. Load elongation relational expression expressed by the pressure curve (f 0 ) of the hysteresis in the hysteresis loss (C = V−W) of the sound-absorbing fabric expressed as the difference from the integral value (W) of f 1 (ρ) f 0 (ρ) hysteresis loss rate of sound-absorbing fabric occupying the integral value (V) of ( E = 100 × C / V = 100 × (V-W) / V) is in that it is 20~45% (20 ≦ ΔE ≦ 45 ).

本発明に係る吸音布帛の第３の特徴は、上記第１、第２の何れかの特徴に加えて、基布１３が表布１３Ａと裏布１３Ｂによる二重構造を成し、吸音糸条１１が表布１３Ａと裏布１３Ｂを連結して表布と裏布に挟まれた吸音層１２を形成している点にある。   A third feature of the sound-absorbing fabric according to the present invention is that, in addition to any of the first and second features, the base fabric 13 has a double structure composed of a front cloth 13A and a back cloth 13B, and a sound-absorbing yarn. 11 is that the sound absorbing layer 12 is formed by connecting the front cloth 13A and the back cloth 13B to be sandwiched between the front cloth and the back cloth.

本発明に係る吸音面材は、上記の吸音布帛１８が支桿１４と支桿１５の間に張設して構成され、車両座席の表面材に適用されることを第１の特徴とする。 Sound absorbing surface material according to the present invention, the sound absorbing fabric 18 is constituted by stretched between支桿14 and支桿15, is applied to the surface material of the vehicle seat to the first aspect of Rukoto.

本発明に係る吸音面材の第２の特徴は、上記第１の特徴に加えて、吸音面材１７の表面が吸音糸条１１の起立していない平面になっている点にある。   The second feature of the sound absorbing surface material according to the present invention is that, in addition to the first feature, the surface of the sound absorbing surface material 17 is a flat surface on which the sound absorbing yarn 11 is not raised.

本発明の吸音布帛１８は、基布１３に弾性糸条が適用されているので、基布１３を目粗に構成するときでも永久歪による伸縮皺が発生することがない。
そして、吸音糸条１１に成る吸音層１２は、繊維積層体（厚手不織布）と同様に、単糸繊度３０ｄｔｅｘ以下の繊維によって構成され、繊維密度が０．０５ｇ／ｃｃ以上であり、繊維目付が３５０ｇ／ｍ2 以上であって吸音材やクッション材としての効用を有し、特に、基布１３に起立して表面に向けて垂直に並んだ吸音糸条１１と吸音糸条１１の間、及び、各吸音糸条１１を構成している繊維と繊維の間の垂直な隙間に音波が入り込み易く、又、吸音糸条１１を構成する繊維は、その単糸繊度が３０ｄｔｅｘ以下であり、クリンプ（巻縮）を有するので、ポリウレタンフォームのセル壁（気泡を囲む細かい樹脂皮膜）と同様に弾性的に伸縮変形し易く、ポリウレタンフォームと同様に、優れた吸音特性を示すことになる。
それ故、ポリウレタンフォームや繊維積層体等の多孔質弾性体に重ね合わせることなく、その吸音布帛１８を、ポリウレタンフォームや繊維積層体等の多孔質弾性体に代わる吸音材として使用することが出来、本発明の吸音布帛１８を使用することによって、軽くて嵩張らない吸音面材が得られる。 In the sound-absorbing fabric 18 of the present invention, since elastic yarn is applied to the base fabric 13, even when the base fabric 13 is roughly structured, expansion and contraction wrinkles due to permanent distortion do not occur.
And the sound-absorbing layer 12 which comprises the sound-absorbing yarn 11 is comprised by the fiber of single yarn fineness 30dtex or less similarly to a fiber laminated body (thick nonwoven fabric), the fiber density is 0.05 g / cc or more, and a fiber basis weight is 350 g / m 2 or more, and has an effect as a sound absorbing material or a cushioning material, in particular, between the sound absorbing yarn 11 and the sound absorbing yarn 11 standing on the base fabric 13 and vertically arranged toward the surface, and In addition, the sound wave can easily enter the vertical gap between the fibers constituting each sound absorbing yarn 11, and the fibers constituting the sound absorbing yarn 11 have a single yarn fineness of 30 dtex or less, and crimp ( Therefore, it is easily elastically stretchable and deformed similarly to the cell wall of polyurethane foam (fine resin film surrounding the bubbles), and exhibits excellent sound absorption characteristics like polyurethane foam.
Therefore, without overlapping the porous elastic body such as polyurethane foam or fiber laminate, the sound absorbing fabric 18 can be used as a sound absorbing material in place of the porous elastic body such as polyurethane foam or fiber laminate, By using the sound absorbing fabric 18 of the present invention, a light absorbing surface material that is light and not bulky can be obtained.

そして仮に、吸音布帛１８を表面材として、ポリウレタンフォームや繊維積層体等の多孔質弾性体に重ね合わせて使用する場合でも、永久歪による伸縮皺が発生することがないので、基布１３を目粗に構成し、多孔質弾性体の吸音特性を何ら損なうことなく、吸音布帛１８を表面材として適用することが出来る。本発明の吸音布帛１８の吸音特性を高めるためには、吸音糸条１１を構成している繊維に１ｄｔｅｘ以下の極細繊維を適用するとよい。   Even if the sound-absorbing fabric 18 is used as a surface material and overlapped with a porous elastic body such as polyurethane foam or a fiber laminate, expansion and contraction wrinkles due to permanent distortion do not occur. The sound-absorbing fabric 18 can be applied as a surface material without damaging the sound-absorbing characteristics of the porous elastic body. In order to enhance the sound absorption characteristics of the sound absorbing fabric 18 of the present invention, it is preferable to apply ultrafine fibers of 1 dtex or less to the fibers constituting the sound absorbing yarn 11.

吸音布帛１８を、吸音糸条１１の起立していない平面を表に向けて使用するとしても、ポリウレタンフォームや繊維積層体等と異なり、基布１３は、従来繊維積層体等の表面材に使用されている内装布帛と同様に織成或いは編成された織物や編物であるから、その基布１３の表面を他の内装布帛によって被覆する必要はなく、この点でも軽くて嵩張らず、而も、上記の通り基布１３を目粗に構成しても永久歪による伸縮皺が発生することがなく、又、その布目が吸音層１２を構成している吸音糸条１１に隠蔽されて目立つことがなく、従って、本発明の吸音布帛１８は、通気性に富み、蒸れ感を与えず、車両内装材、特に、座席の表面材に最適のものとなる。
吸音布帛１８はクッション材としても使用することが出来、その場合、その吸音布帛１８の上に通気性のある他の表面材を重ねることによって、吸音性とクッション性に優れた内装材を得ることが出来る。 Even if the sound absorbing fabric 18 is used with the surface on which the sound absorbing yarns 11 do not stand facing upward, unlike the polyurethane foam or fiber laminate, the base fabric 13 is conventionally used as a surface material such as a fiber laminate. Since it is a woven or knitted fabric knitted or knitted in the same manner as the interior fabric, it is not necessary to cover the surface of the base fabric 13 with another interior fabric, and in this respect, it is light and not bulky. As described above, even if the base fabric 13 is roughly structured, there is no occurrence of stretch wrinkles due to permanent distortion, and the fabric texture is conspicuous by being concealed by the sound absorbing yarn 11 constituting the sound absorbing layer 12. Therefore, the sound-absorbing fabric 18 of the present invention is rich in breathability, does not give a feeling of stuffiness, and is optimal for a vehicle interior material, particularly a seat surface material.
The sound-absorbing fabric 18 can also be used as a cushioning material. In that case, an interior material having excellent sound-absorbing properties and cushioning properties can be obtained by stacking another air-permeable surface material on the sound-absorbing fabric 18. I can do it.

それ故に、吸音布帛１８を支桿１４と支桿１５の間に張設して構成された吸音面材１７は、座席の座面や背凭れに適用することが出来、又、そのまま座布団（クッション）に使用することも出来る。   Therefore, the sound-absorbing surface material 17 formed by stretching the sound-absorbing fabric 18 between the support 14 and the support 15 can be applied to the seat surface and the backrest of the seat, and the cushion (the cushion) ) Can also be used.

吸音面材１７を、強い伸長応力が基布に繰り返し作用する座席に使用する場合、基布の疲労、即ち、基布を構成する繊維糸条に生じる永久歪による伸縮皺を回避するため、弾性糸条には、単糸繊度が３００ｄｔｅｘ以上であり、破断伸度が６０（％）以上であり、１５％伸長後の弾性回復率が９０（％）以上のモノフィラメント弾性糸を使用し、その弾性糸条の連続する方向における布帛の１０％伸長時の応力Ｆ（Ｎ／５ｃｍ）が１５０≦Ｆ≦６００であり、その弾性糸条の連続する方向における１０％伸長時までの荷重伸度曲線図に示されるヒステリシスの加圧曲線（ｆ0 ）によって表される荷重伸度関係式ｆ0 （ρ）の積分値（Ｖ）と、そのヒステリシスの減圧曲線（ｆ1 ）によって表される荷重伸度関係式ｆ1 （ρ）の積分値（Ｗ）との差として表されるヒステリシスロス（Ｃ＝Ｖ−Ｗ）の前記加圧曲線（ｆ0 ）によって表される荷重伸度関係式ｆ0 （ρ）の積分値（Ｖ）に占める布帛のヒステリシスロス率（ΔＥ＝１００×Ｃ／Ｖ＝１００×（Ｖ−Ｗ）／Ｖ）が２０〜４５％（２０≦ΔＥ≦４５）となるように吸音布帛を設計する。 When the sound-absorbing surface member 17 is used for a seat in which a strong elongation stress repeatedly acts on the base fabric, it is elastic in order to avoid fatigue of the base fabric, that is, expansion and contraction wrinkles due to permanent distortion generated in the fiber yarn constituting the base fabric. For the yarn, a monofilament elastic yarn having a single yarn fineness of 300 dtex or more, a breaking elongation of 60 (%) or more, and an elastic recovery after 15% elongation of 90 (%) or more is used. The stress F (N / 5 cm) at the time of 10% elongation of the fabric in the continuous direction of the yarn is 150 ≦ F ≦ 600, and the load elongation curve diagram until the 10% elongation in the continuous direction of the elastic yarn The load elongation represented by the integral value (V) of the load elongation relational expression f 0 (ρ) represented by the pressurization curve (f 0 ) of hysteresis and the decompression curve (f 1 ) of the hysteresis. The integral value (W) of the relational expression f 1 (ρ) Hysteresis loss rate of the fabric in the integral value (V) of the load elongation relational expression f 0 (ρ) represented by the pressure curve (f 0 ) of the hysteresis loss (C = V−W) expressed as a difference The sound-absorbing fabric is designed so that (ΔE = 100 × C / V = 100 × (V−W) / V) is 20 to 45% (20 ≦ ΔE ≦ 45).

好ましいモノフィラメント弾性糸は、弾性繊維ポリマーを芯成分とし、熱融着性ポリマーを鞘成分とする芯鞘複合構造の弾性糸、具体的に言えば、ポリエーテル系エステルを芯成分ポリマーとし、その芯成分ポリマーよりも低融点の熱融着性ポリマーを鞘成分ポリマーとする熱融着性芯鞘複合ポリエーテル系エステル弾性糸条（東洋紡績株式会社製品名：ダイヤフローラ）である。
そのように、基布に熱融着性を有する繊維糸条を用いるときは、それを加熱溶融させることによって吸音布帛１８を構成する繊維糸条間を接合することが出来るので、ラテックス接着剤を基布に塗布する必要がなく、従って、その塗布するラテックス接着剤によって布目が塞がれて吸音布帛の吸音特性が損なわれるようなこともなくなる。 A preferred monofilament elastic yarn is an elastic yarn having a core-sheath composite structure having an elastic fiber polymer as a core component and a heat-fusible polymer as a sheath component, specifically, a polyether ester as a core component polymer, and the core. It is a heat-fusible core-sheath composite polyether ester elastic yarn (Toyobo Co., Ltd., product name: Diaflora) having a heat-fusible polymer having a melting point lower than that of the component polymer as a sheath component polymer.
As described above, when the fiber yarn having heat-fusibility is used for the base fabric, the fiber yarn constituting the sound-absorbing fabric 18 can be joined by heating and melting it. It is not necessary to apply to the base fabric, and therefore, the fabric is not blocked by the applied latex adhesive, and the sound absorbing properties of the sound absorbing fabric are not impaired.

吸音布帛１８を、吸音糸条１１の起立していない平面を表に向けて使用する場合、即ち、吸音層１２を内側にし基布１３を外側に露出させて吸音布帛１８を使用する場合、基布１３には、弾性糸条と共に装飾性を有する糸条、例えば、モール糸、シェニール糸、リング糸、ネップ糸、スラブ糸等の弾性糸条に比して嵩高で見栄えのよい意匠糸条を適用するとよい。基布の外面を装飾するためには、起毛布帛や両面パイル布帛のように、起毛毛羽やパイルを形成することも出来る。図３において、１６は、支桿１４と支桿１５の間を規定しているフレーム本体である。   When the sound-absorbing fabric 18 is used with the flat surface of the sound-absorbing yarn 11 facing upward, that is, when the sound-absorbing fabric 18 is used with the sound-absorbing layer 12 inside and the base fabric 13 exposed to the outside, The fabric 13 is a yarn having a decorative appearance along with the elastic yarn, for example, a design yarn that is bulky and attractive compared to an elastic yarn such as a mole yarn, chenille yarn, ring yarn, nep yarn, slab yarn, etc. It is good to apply. In order to decorate the outer surface of the base fabric, a raised fluff or a pile can be formed like a raised fabric or a double-sided pile fabric. In FIG. 3, reference numeral 16 denotes a frame body that defines the space between the support 14 and the support 15.

〔試作１〕
第１筬Ｌ1 と第２筬Ｌ2 と第３筬Ｌ3 と第４筬Ｌ4 と第５筬Ｌ5 と第６筬Ｌ6 との６枚筬を装備したニードルゲージが９／２５．４ｍｍ、釜間が１０ｍｍのダブルラッシェル経編機を使用し、第１筬Ｌ1 と第３筬Ｌ3 と第４筬Ｌ4 と第５筬Ｌ5 と第６筬Ｌ6 にポリエステル繊維ウーリー加工糸（８８８ｄｔｅｘ＝２２２ｄｔｅｘ−７２ｆ×４）を供給し、第２筬Ｌ2 にポリエーテル系エステルを芯成分ポリマーとし、その芯成分ポリマーよりも低融点の熱融着性ポリマーを鞘成分ポリマーとする熱融着性芯鞘複合ポリエーテル系エステルモノフイラメント弾性糸条（２０８０ｄｔｅｘ、東洋紡績株式会社製品名：ダイヤフローラ）を供給し、第１筬Ｌ1 によって０１１１／１５００／………の順に、第２筬Ｌ2 によって００３３／３３００／………の順に、第３筬Ｌ3 によって１２１１／１０１１／２１２２／２３２２／１２２２／３２２２／２１１１／０１１１／………の順に、第４筬Ｌ4 によって１２２２／３２２２／２１１１／０１１１／１２１１／１０１１／２１２２／２３２２／………の順に、第５筬Ｌ5 によって３２２２／１２１１／１０１１／１２２２／………の順に、第６筬Ｌ6 によって１０１１／１２２２／３２２２／１２１１／………の順に、それぞれ操作し、第１筬Ｌ1 と第２筬Ｌ2 によって裏布を編成し、第５筬Ｌ5 と第６筬Ｌ6 によって表布を編成しつつ、それらの裏布と表布を第３筬Ｌ3 と第４筬Ｌ4 から供給するポリエステル繊維ウーリー加工糸によって連結し、裏布と表布の間にポリエステル繊維ウーリー加工糸による吸音層を形成した二重構造の経編地を編成し、１９０℃にて１０分間乾熱処理し、熱融着性芯鞘複合ポリエーテル系エステル弾性糸条とポリエステル繊維ウーリー加工糸が融着したコース密度１３コース／２５．４ｍｍ、ウェール密度１０ウェール／２５．４ｍｍの吸音布帛に仕上げる。 [Prototype 1]
A needle gauge equipped with six rods of a first rod L 1 , a second rod L 2 , a third rod L 3 , a fourth rod L 4 , a fifth rod L 5 and a sixth rod L 6 is 9/25. 4 mm, between the kettle using a double raschel warp knitting machine of 10 mm, polyester fiber woolly processed first reed L 1 and the third reed L 3 and the fourth reed L 4 and the fifth reed L 5 to the sixth reed L 6 Thread (888 dtex = 222 dtex−72f × 4) is supplied, polyether ester is used as the core component polymer for the second heel L 2 , and a heat-fusible polymer having a melting point lower than that of the core component polymer is used as the sheath component polymer. heat-fusible core-sheath composite polyether ester monofilament elastic yarn (2080Dtex, Toyobo Co., Ltd. product name: Dia Flora) supplies, in the order of the first guide bar L 1 0111/1500 / ........., the by 2 reed L 2 0033/3300 / ......... order of , In the order of the third reed L 3 by 1211/1011/2122/2322/1222/3222/2111/0111 / ........., the fourth reeds L 4 1222/3222/2111/0111/1211/1011/2122/2322 In this order, the fifth rod L 5 is operated in the order of 3222/1211/1011/1222 / ... ……, and the sixth rod L 6 is operated in the order of 1011/1222/3222/1211 /. While knitting the lining cloth with the first heel L 1 and the second heel L 2 and knitting the front cloth with the fifth heel L 5 and the sixth heel L 6 , 3 and linked by polyester fiber woolly textured yarn supplied from the fourth reed L 4, organizes warp knitted fabric of double structure forming the sound absorbing layer by polyester fiber woolly finished yarn between the rear cloth and table cloth, A dry heat treatment was performed at 190 ° C. for 10 minutes, and a heat-fusible core-sheath composite polyether-based ester elastic yarn and polyester fiber wooly processed yarn were fused to a course density of 13 course / 25.4 mm and a wale density of 10 wales / 25. Finish into a 4 mm sound-absorbing fabric.

〔試作２〕
第１筬Ｌ1 と第２筬Ｌ2 と第３筬Ｌ3 と第４筬Ｌ4 と第５筬Ｌ5 と第６筬Ｌ6 との６枚筬を装備したニードルゲージが９／２５．４ｍｍ、釜間が１０ｍｍのダブルラッシェル経編機を使用し、第１筬Ｌ1 と第５筬Ｌ5 と第６筬Ｌ6 にポリエステル繊維ウーリー加工糸（８８８ｄｔｅｘ＝２２２ｄｔｅｘ−７２ｆ×４）を供給し、第２筬Ｌ2 にポリエーテル系エステルを芯成分ポリマーとし、その芯成分ポリマーよりも低融点の熱融着性ポリマーを鞘成分ポリマーとする熱融着性芯鞘複合ポリエーテル系エステルモノフイラメント弾性糸条（２０８０ｄｔｅｘ、東洋紡績株式会社製品名：ダイヤフローラ）を供給し、第３筬Ｌ3 と第４筬Ｌ4 にポリエステル繊維モノフイラメント糸（６６０ｄｔｅｘ）を供給し、〔試作１〕と同じ編組織により、裏布と表布の間にポリエステル繊維モノフイラメント糸による吸音層を形成した二重構造の経編地を編成し、１９０℃にて１０分間乾熱処理し、熱融着性芯鞘複合ポリエーテル系エステル弾性糸条とポリエステル繊維ウーリー加工糸が融着したコース密度１２コース／２５．４ｍｍ、ウェール密度１０ウェール／２５．４ｍｍの吸音布帛に仕上げる。 [Prototype 2]
A needle gauge equipped with six rods of a first rod L 1 , a second rod L 2 , a third rod L 3 , a fourth rod L 4 , a fifth rod L 5 and a sixth rod L 6 is 9/25. 4 mm, using a double raschel warp knitting machine of 10mm between the kettle feed polyester fiber woolly finished yarn of (888dtex = 222dtex-72f × 4 ) first guide bar L 1 and the fifth reed L 5 to the sixth reed L 6 In addition, a heat-fusible core-sheath composite polyether-based ester monoester having a polyether ester as the core component polymer in the second base L 2 and a heat-fusible polymer having a melting point lower than that of the core component polymer as the sheath component polymer. Filament elastic yarn (2080 dtex, Toyobo Co., Ltd., product name: Diaflora) is supplied, polyester fiber monofilament yarn (660 dtex) is supplied to the third 筬 L 3 and the fourth 筬 L 4 ; With the same knitting structure, A double-structure warp knitted fabric in which a sound absorbing layer is formed between polyester fabric monofilament yarns is knitted and subjected to dry heat treatment at 190 ° C. for 10 minutes, and a heat-fusible core-sheath composite polyether ester elastic yarn And a polyester fiber wooly processed yarn fused into a sound-absorbing fabric having a course density of 12 course / 25.4 mm and a wale density of 10 wale / 25.4 mm.

〔試作３〕
第１筬Ｌ1 と第２筬Ｌ2 と第３筬Ｌ3 と第４筬Ｌ4 と第５筬Ｌ5 と第６筬Ｌ6 との６枚筬を装備したニードルゲージが９／２５．４ｍｍ、釜間が１０ｍｍのダブルラッシェル経編機を使用し、第１筬Ｌ1 と第５筬Ｌ5 と第６筬Ｌ6 にポリエステル繊維ウーリー加工糸（８８８ｄｔｅｘ＝２２２ｄｔｅｘ−７２ｆ×４）を供給し、第２筬Ｌ2 にポリエステル繊維モノフイラメント糸（２０００ｄｔｅｘ＝１０００ｄｔｅｘ２本引き揃え）を供給し、第３筬Ｌ3 と第４筬Ｌ4 にポリエステル繊維モノフイラメント糸（６６０ｄｔｅｘ）を供給し、〔試作１〕と同じ編組織により、裏布と表布の間にポリエステル繊維モノフイラメント糸による吸音層を形成した二重構造の経編地を編成し、そのまま吸音布帛として使用する。 [Prototype 3]
A needle gauge equipped with six rods of a first rod L 1 , a second rod L 2 , a third rod L 3 , a fourth rod L 4 , a fifth rod L 5 and a sixth rod L 6 is 9/25. 4 mm, using a double raschel warp knitting machine of 10mm between the kettle feed polyester fiber woolly finished yarn of (888dtex = 222dtex-72f × 4 ) first guide bar L 1 and the fifth reed L 5 to the sixth reed L 6 The polyester fiber monofilament yarn (2000 dtex = 1000 dtex, two aligned) is supplied to the second heel L 2 , the polyester fiber monofilament yarn (660 dtex) is supplied to the third heel L 3 and the fourth heel L 4 , [ A warp knitted fabric having a double structure in which a sound absorbing layer made of polyester fiber monofilament yarn is formed between a backing fabric and a front fabric with the same knitting structure as in Prototype 1] is used as a sound absorbing fabric as it is.

〔試作４〕
ポリエステル繊維紡績糸（繊度：２／１０メートル番手）を経糸に適用し、経糸密度を５５本／１０ｃｍに設定して整経する。ポリエーテル系エステルを芯成分ポリマーとし、その芯成分ポリマーよりも低融点の熱融着性ポリマーを鞘成分ポリマーとする熱融着性芯鞘複合ポリエーテル系エステルモノフイラメント弾性糸条（繊度：２０８０ｄｔｅｘ、東洋紡績株式会社製品名：ダイヤフローラ）を緯糸に適用する。緯糸密度を１１５本／１０ｃｍに設定し、綾織組織（２／１斜紋）による織物を織成する。その織物をピンテンターに通して１８５℃で３分間乾熱処理し、経糸と緯糸との接結点を融着固化させて仕上げる。 [Prototype 4]
A polyester fiber spun yarn (fineness: 2/10 meter) is applied to the warp, and the warp density is set to 55/10 cm to warp. A heat-fusible core-sheath composite polyether-based ester monofilament elastic yarn having a polyether-based ester as a core component polymer and a heat-fusible polymer having a melting point lower than that of the core component polymer (fineness: 2080 dtex). Toyobo Co., Ltd. product name: Diaflora) is applied to the weft. The weft density is set to 115/10 cm, and a woven fabric with a twill weave structure (2/1 oblique pattern) is woven. The woven fabric is passed through a pin tenter and subjected to a dry heat treatment at 185 ° C. for 3 minutes, and the connection point between the warp and the weft is fused and solidified to finish.

上記試作１〜４の吸音布帛のＡＳＴＭ−Ｅ−１０５０−２に規定されるマイクロホン法に基づく垂直入射吸音率と布幅方向（弾性糸条の連続方向）における布帛の１０％伸長時の応力Ｆ（単位：Ｎ／５ｃｍ）を測定し、次の〔表１〕に示す通り、試作１の吸音布帛は入射音の全周波音域にわたって優れた吸音率を示したが、試作２と３の吸音布帛は入射音の低周波音域の吸音率が低く、そのことから、第３筬Ｌ3 と第４筬Ｌ4 のポリエステル繊維ウーリー加工糸に成る試作１の吸音層が、第３筬Ｌ3 と第４筬Ｌ4 のポリエステル繊維モノフイラメント糸に成る試作２と３の吸音層よりも吸音特性がよく、吸音層のない試作４の布帛は吸音材としては使用し得ないことが確認された。 Normal absorption sound absorption coefficient based on the microphone method defined in ASTM-E-1050-2 of the sound absorbing fabrics of the above prototypes 1 to 4 and the stress F at 10% elongation of the fabric in the fabric width direction (continuous direction of the elastic yarn) (Unit: N / 5 cm) was measured, and as shown in [Table 1] below, the sound absorbing fabric of Prototype 1 showed an excellent sound absorption rate over the entire frequency range of incident sound, but the sound absorbing fabrics of Prototypes 2 and 3 Has a low sound absorption coefficient in the low frequency range of the incident sound, and therefore, the sound absorption layer of the prototype 1 made of polyester fiber wooly processed yarns of the third 筬 L 3 and the fourth 筬 L 4 has the third 筬 L 3 and the third 筬 L 3 . 4 reeds L 4 polyester fiber monofilament yarns may sound absorption properties than the sound absorbing layer of the prototype 2 and 3 consisting found fabric with no sound absorbing layer prototype 4 was confirmed to not be used as a sound absorbing material.

試作１と試作２と試作３の吸音布帛を支桿と支桿の間に張設して吸音面材を作成して椅子に載せ、その上に腰掛けて座り心地を調べた。
試作１と試作２の吸音布帛では、座り心地が非常に良く、吸音布帛が然程窪まず、吸音布帛から側圧を感じることもなく、繰り返し腰掛けて使用したが弛み皺は見られなかった。
試作３の吸音布帛では、腰掛けたときに窪み、吸音布帛から側圧感を受け、姿勢が不安定に感じられ、長時間の使用（着席）に耐えるものではなかった。 The sound-absorbing fabrics of Prototype 1, Prototype 2 and Prototype 3 were stretched between the supports and the sound-absorbing surface material was created and placed on the chair, and then seated on the chair to examine the sitting comfort.
The sound-absorbing fabrics of Prototype 1 and Prototype 2 were very comfortable to sit on, and the sound-absorbing fabric was not so depressed, and the side pressure was not felt from the sound-absorbing fabric.
The sound-absorbing fabric of Prototype 3 was depressed when seated, received a side pressure from the sound-absorbing fabric, felt unstable, and could not withstand long-term use (sitting).

Figure 0005051488
Figure 0005051488

本発明に係る吸音布帛の断面図である。It is sectional drawing of the sound-absorbing fabric which concerns on this invention. 本発明に係る吸音布帛の断面図である。It is sectional drawing of the sound-absorbing fabric which concerns on this invention. 本発明に係る吸音面材の断面図である。It is sectional drawing of the sound-absorbing surface material which concerns on this invention. 布帛の荷重伸度曲線図である。It is a load elongation curve figure of a fabric.

符号の説明Explanation of symbols

１１：吸音糸条
１２：吸音層
１３：基布
１３Ａ：表布
１３Ｂ：裏布
１４：支桿
１５：支桿
１６：フレーム本体
１７：弾性面材
１８：吸音布帛 11: Sound absorbing yarn 12: Sound absorbing layer 13: Base cloth 13A: Front cloth 13B: Back cloth 14: Support 15: Support 16: Frame body 17: Elastic face material 18: Sound absorbing cloth

Claims (5)

単糸繊度３０ｄｔｅｘ以下の繊維によって構成される吸音糸条（１１）が基布（１３）から起立して繊維密度が０．０５ｇ／ｃｃ以上であり、繊維目付が３５０ｇ／ｍ2 以上の吸音層（１２）を構成しており、その基布（１３）に弾性糸条が適用されており、
その弾性糸条の連続方向における吸音布帛の１０％伸長時の応力Ｆ（単位：Ｎ／５ｃｍ）が１５０≦Ｆ≦６００である吸音布帛。 A sound absorbing layer (11) composed of fibers having a single yarn fineness of 30 dtex or less stands from the base fabric (13), has a fiber density of 0.05 g / cc or more, and has a fiber basis weight of 350 g / m 2 or more. (12) is formed, and the elastic yarn is applied to the base fabric (13) .
Its elastic yarns of the backing fabric in the continuous direction at 10% elongation stress F (Unit: N / 5 cm) is 0.99 ≦ F ≦ 600 der Ru sound absorbing fabric. 前掲請求項１に記載の弾性糸条の破断伸度が６０（％）以上であり、その１５％伸長後の弾性回復率が９０（％）以上であり、前記弾性糸条の連続する方向における吸音布帛の伸度０％から１０％伸長時までのヒステリシスの加圧曲線（ｆ 0 ）によって表される荷重伸度関係式ｆ 0 （ρ）の積分値（Ｖ）と、前記弾性糸条の連続する方向における吸音布帛の１０％伸長時から伸度０％までのヒステリシスの減圧曲線（ｆ 1 ）によって表される荷重伸度関係式ｆ 1 （ρ）の積分値（Ｗ）との差として表される吸音布帛のヒステリシスロス（Ｃ＝Ｖ−Ｗ）における前記ヒステリシスの加圧曲線（ｆ 0 ）によって表される荷重伸度関係式ｆ 0 （ρ）の積分値（Ｖ）に占める吸音布帛のヒステリシスロス率（ΔＥ＝１００×Ｃ／Ｖ＝１００×（Ｖ−Ｗ）／Ｖ）が２０〜４５％である前掲請求項１に記載の吸音布帛。 The breaking elongation of the elastic yarn according to claim 1 is 60 (%) or more, the elastic recovery after 15% elongation is 90 (%) or more, and the elastic yarn is in a continuous direction. The integrated value (V) of the load elongation relational expression f 0 (ρ) represented by the pressurization curve (f 0 ) of hysteresis from 0% to 10% elongation of the sound absorbing fabric, and the elastic yarn As the difference from the integral value (W) of the load elongation relational expression f 1 (ρ) represented by the decompression curve (f 1 ) of hysteresis from 10% elongation to 0% elongation of the sound absorbing fabric in the continuous direction The sound- absorbing fabric occupies the integral value (V) of the load elongation relational expression f 0 (ρ) represented by the hysteresis pressurization curve (f 0 ) in the hysteresis loss (C = V−W) of the sound-absorbing fabric represented. Hysteresis loss rate (ΔE = 100 × C / V = 100 × (V−W) / ) Sound absorption fabric supra claim 1 20 to 45%. 基布（１３）が表布（１３Ａ）と裏布（１３Ｂ）による二重構造を成し、吸音糸条（１１）が表布（１３Ａ）と裏布（１３Ｂ）を連結して表布と裏布に挟まれた吸音層（１２）を形成している前掲請求項１又は請求項２の何れか１項に記載の吸音布帛。   The base fabric (13) forms a double structure of the front fabric (13A) and the back fabric (13B), and the sound absorbing yarn (11) connects the front fabric (13A) and the back fabric (13B) The sound-absorbing fabric according to claim 1 or 2, wherein the sound-absorbing layer (12) sandwiched between the backing fabrics is formed. 前掲請求項１、請求項２又は請求項３の何れか１項に記載の吸音布帛１８を支桿１４と支桿１５の間に張設して構成された車両座席の表面材に適用される吸音面材。 The sound absorbing fabric 18 according to any one of claims 1, 2, or 3 is applied to a surface material of a vehicle seat configured by stretching between the support 14 and the support 15. Sound absorbing surface material. 前掲請求項４に記載の吸音面材（１７）の表面が、吸音糸条（１１）の起立していない平面になっている前掲請求項４に記載の吸音面材。   The sound-absorbing surface material according to claim 4, wherein the surface of the sound-absorbing surface material (17) according to claim 4 is a flat surface on which the sound-absorbing yarn (11) is not raised.
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