JP6722984B2 - Method for producing woven fabric having three-dimensional structure - Google Patents
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Description
本発明は、立体構造を有する織物に関するものである。 The present invention relates to a woven fabric having a three-dimensional structure.
ある程度の厚みを有する布帛としては、多重織物や多重編物が挙げられる。また、２枚の経編地を連結糸で連結して三次元的な立体構造を有する布帛は、ダブルラッセル編物ともいい、よく知られており（例えば、特許文献１）、クッション性を有することから、寝具やマット、また、立体構造の空隙を利用してフィルター分野や、土木分野等の多岐にわたり用いられている。 Examples of the cloth having a certain thickness include multiple woven fabrics and multiple knits. A fabric having a three-dimensional three-dimensional structure in which two warp knitted fabrics are connected by a connecting yarn is also known as a double Russell knit, and is well known (for example, Patent Document 1) and has cushioning properties. Therefore, it is used in a wide variety of fields such as bedding and mats, and filter fields and civil engineering fields by utilizing voids of a three-dimensional structure.
ダブルラッセル編物は、前記したように多岐の分野において用いられているが、編物組織自体は単調なものであり、せいぜい両面の編地の組織を異ならせることはできるものの、一枚の編地において、いろいろな組織や模様を付与しにくい。 Double Russell knitting is used in various fields as described above, but the knitting structure itself is monotonous, and although the structures of the knitted fabrics on both sides can be different at most, in one knitted fabric , It is difficult to add various textures and patterns.
本発明では、ある程度の厚みを有する布帛において、多岐にわたる用途に適用可能であり、また、容易に種々の組織を組み合わせることができる布帛を提供することを課題とする。 An object of the present invention is to provide a cloth having a certain thickness, which can be applied to a wide variety of applications and which can easily combine various tissues.
本発明は上記課題化を達成するものであって、立体構造を有する織物の製造方法であって、蜂巣織組織の完全組織を織組織の少なくとも一部に有する織物であり、
蜂巣織組織において、熱による収縮性の異なる２種の糸として高熱収縮糸と低熱収縮糸とを用い、前記高熱収縮糸および低熱収縮糸はいずれもモノフィラメント糸であり、高熱収縮糸が熱接着性繊維によって構成される糸であり、
蜂巣織組織の経糸および緯糸の長浮きする領域で升目を形成する領域に高熱収縮糸を配し、前記以外の領域には低熱収縮糸を配し、
織物を織成した後、熱処理を施して、低熱収縮糸よりも高熱収縮糸を大きく熱収縮させて、立体構造を形成させるとともに、熱接着性繊維の熱接着成分が溶融または軟化することにより、高熱収縮糸が配された経糸と緯糸の交点が熱接着することを特徴とする立体構造を有する織物の製造方法を要旨とするものである。
The present invention achieves the above object, a method for producing a woven fabric having a three-dimensional structure, which is a woven fabric having a complete weave structure in at least a part of the weave structure,
In a honeycomb structure, a high heat shrinkable yarn and a low heat shrinkable yarn are used as two types of yarns having different heat shrinkability, and the high heat shrinkable yarn and the low heat shrinkable yarn are both monofilament yarns, and the high heat shrinkable yarn has thermal adhesiveness. A thread made up of fibers,
A high heat shrinkable yarn is arranged in a region forming a square in a region where long warps and wefts of a honeycomb structure are arranged, and a low heat shrinkable yarn is arranged in a region other than the above,
After weaving the woven fabric, heat treatment is performed to cause heat shrinkage of the high heat shrinkable yarn to be larger than that of the low heat shrinkable yarn to form a three-dimensional structure, and the heat-adhesive component of the heat-adhesive fiber is melted or softened so that high heat A gist of the present invention is to provide a method for producing a woven fabric having a three-dimensional structure, characterized in that the intersections of the warp yarns and the weft yarns on which the shrinkage yarns are arranged are heat-bonded .
本発明の製造方法により得られる織物は、蜂巣組織の完全組織を織組織の少なくとも一部に有するものであり、蜂巣織組織において、熱収縮性の異なる２種の糸を特定の位置に配することにより、すなわち、蜂巣織組織における経糸および緯糸の長浮する領域に高熱収縮糸を配し、それ以外の領域に低熱収縮糸を配し、熱処理が施されたものである。この熱処理によって、低熱収縮糸よりも高熱収縮糸を大きく収縮するため、高熱収縮糸が配された領域が、長浮する領域であり、蜂巣織による凹凸がより顕著に発現する。すなわち、長浮する領域は、蜂巣織組織の升目を構成する箇所であるため、一方の面から観察した際には、その面側の升目が表面に押出されるように顕れ、他方の面の升目は、一方面からは最も沈み込んで見え、他方面から観察した際には、他方面の表面に升目が押出されて顕れる。また、長浮する領域以外は、低熱収縮糸により構成されるため、長浮する領域と比較して、熱処理による収縮が小さく、両表面に突出して顕れる長浮する領域（升目）同士の空間内に存在し、高熱収縮糸との熱収縮差により、糸が直線的にピンと引っ張られることなく、やや弛んだ状態で緩やかな曲線を描いて配列し、直線的でないため自由度がある。 The woven fabric obtained by the production method of the present invention has the complete structure of the honeycomb structure in at least a part of the woven structure, and in the honeycomb structure, two kinds of yarns having different heat shrinkability are arranged at specific positions. Thus, that is, the high heat shrinkable yarns are arranged in the long floating regions of the warp yarns and the weft yarns in the honeycomb weave structure, the low heat shrinkable yarns are arranged in the other regions, and the heat treatment is performed. By this heat treatment, the high heat shrinkable yarn shrinks more than the low heat shrinkable yarn, so that the region where the high heat shrinkable yarn is arranged is a long floating region, and the unevenness due to the honeycomb weave is more prominently expressed. That is, the region that floats long is a part that constitutes the squares of the honeycomb structure, so when observed from one surface, the squares on the surface side appear to be extruded on the surface, and the other surface of the other surface. The squares appear to be most depressed from one side, and when observed from the other side, the squares are extruded and appear on the surface of the other side. In addition, since the parts other than the long floating region are made of low heat shrinkable yarn, the shrinkage due to heat treatment is smaller than that of the long floating region, and the space between the long floating regions (squares) that protrudes on both surfaces and appears. There is a degree of freedom because the yarn is arranged in a slightly slack state in a gentle curve without being linearly pulled due to the difference in heat shrinkage with the high heat shrinkable yarn, and is not linear.
蜂巣組織は、経糸および緯糸の長い浮によって、布帛が凹凸を形成する組織である。図１（Ａ）は緯糸浮き、図（Ｂ）は経糸浮きのひし形斜文であり、この組織では平坦であり布帛に凹凸は顕れないが、交互に配置することにより、凹凸が顕れることになる。本発明は、２種の熱収縮差を有する糸を用いて、それぞれの糸を特定の位置に配した後に、熱処理を施して熱収縮を発現させ、その熱収縮差を利用することにより、より立体的な凹凸を形成させる。本発明においては、織物の組織の一部に蜂巣織組織の完全組織を有するものであっても、蜂巣織組織のみからなる織物であってもよい。 The honeycomb structure is a structure in which the fabric forms irregularities due to the long floating of the warp and the weft. 1A is a weft float, and FIG. 1B is a warp float rhombus. The texture is flat and no unevenness appears on the fabric, but by arranging them alternately, the unevenness appears. .. According to the present invention, by using yarns having two types of thermal shrinkage differences, each yarn is placed at a specific position, heat treatment is performed to cause thermal shrinkage, and the difference in thermal shrinkage is utilized. Form three-dimensional unevenness. In the present invention, the woven fabric may have a complete weave structure in a part of the weave structure, or may be a woven fabric having only a weave structure.
蜂巣織組織において、経糸および緯糸の長浮きする領域で升目を形成する領域に高熱収縮糸を配する。図２は、蜂巣織組織の完全組織であって、経糸８本、緯糸８本で１完全組織を形成する例である。例えば、図２において、１〜８は経糸、イ〜ホは緯糸である。経糸のうち長浮きする糸でかつ升目を形成する糸としては、山を形成する側の経糸で最も浮の長い経糸は５、谷を形成する側の経糸で最も浮の長い経糸は１である。一方、緯糸のうち長浮する糸でかつ升目を形成する糸としては、山を形成する側の緯糸で最も浮の長い緯糸はホ、谷を形成する側の緯糸で最も浮の長い緯糸はイである。本発明では、図２の組織において、高熱収縮糸は、経糸５、経糸１、緯糸ホ、緯糸イに配される。なお、この例示では、山側と谷側とそれぞれにおいて経糸、緯糸のそれぞれ最も浮の長い糸４本には、高熱収縮糸を配して、長浮する領域であって升目を形成する領域を形成させるとしたが、最も浮の長い４本に隣接して配される糸に高熱収縮糸を配してもよい。例えば、前述の上例示では、完全組織を構成する糸本数が８本に対して、高熱収縮糸を配する糸本数を２本とし、その比率を「完全組織の糸本数／高熱収縮糸」を４／１としたが、その比率は３／１〜５／１程度の範囲がよい。また、完全組織を構成する経糸および緯糸の本数は適宜選択すればよく、５〜３０本程度がよい。また、例示した図２の組織では、経糸と緯糸とは同じ本数配列させた組織であるが、経糸と緯糸の配列本数は異なる数であってもよい。 In the honeycomb weave structure, the high heat shrinkable yarn is arranged in the region where the grids are formed in the region where the warp yarn and the weft yarn float long. FIG. 2 shows an example of a complete weave structure in which one warp and eight wefts form one complete design. For example, in FIG. 2, 1 to 8 are warp yarns, and 1 to 8 are weft yarns. Among the warp yarns, which are long-floating yarns and which form squares, the longest floating warp yarns on the mountain forming side are 5, and the longest floating warp yarns on the valley forming side are 1. .. On the other hand, among the weft yarns that are long-floating and form the grid, the weft yarn on the side forming the crests has the longest float, and the weft yarn on the side forming the valleys has the longest float. Is. In the present invention, in the design of FIG. 2, the high heat shrinkable yarns are arranged on the warp yarn 5, the warp yarn 1, the weft yarn E, and the weft yarn A. In this example, high heat shrinkage yarns are arranged on the four longest floating warp yarns and weft yarns on each of the mountain side and the valley side to form long floating regions that form squares. However, the high heat shrinkable yarns may be arranged adjacent to the four yarns having the longest float. For example, in the above example, the number of threads forming the complete design is 8 and the number of threads providing the high heat shrinkable thread is 2, and the ratio is “the number of threads of the complete design/high heat shrinkable thread”. Although it is set to 4/1, the ratio is preferably in the range of about 3/1 to 5/1. The number of warp threads and weft threads forming the complete design may be appropriately selected and is preferably about 5 to 30. Further, in the illustrated design of FIG. 2, the warp and the weft are arranged in the same number, but the warp and the weft may be arranged in different numbers.
本発明は、熱収縮性の異なる２種の糸を用いる。高熱収縮糸と低熱収縮糸との熱収縮率差は、本発明が目的とする立体構造を効果的に形成させるためには５％以上がよい。好ましくは８％以上である。収縮差が大きくなりすぎると、得られる織物はより立体的になるものの、糸の配列密度や組織にもよるが、低熱収縮糸が緩み過ぎてしまう恐れがあるため、上限は３０％程度とする。熱収縮率は、以下の方法により測定する。すなわち、長さ３５ｃｍの試料を採取し、試料が直線状態となるように試料端に荷重１０ｇをぶら下げ、試料の長手方向２０ｃｍの長さを表す印を付ける。荷重を付加した状態で、織成した織物の熱処理温度（熱収縮のための熱処理）に設定した高温雰囲気内で２分間熱処理を行い、熱処理後、熱処理前に印を付けた箇所の長さ（Ｌ）を０．１ｍｍ単位まで測定する。下式によって収縮率を算出する。なお、糸の収縮率は、試料５本の平均値により求める。
収縮率（％）=（２０−Ｌ／２０）×１００
なお、後述するが、熱収縮のための熱処理は、乾熱でも湿熱でもよく、熱収縮のための熱処理が乾熱の場合は、糸の熱収縮率も乾熱状態で測定し、湿熱で処理する場合は、糸の熱収縮率も湿熱状態で測定する。
The present invention uses two types of yarns having different heat shrinkability. The difference in heat shrinkage between the high heat shrinkable yarn and the low heat shrinkable yarn is preferably 5% or more in order to effectively form the three-dimensional structure intended by the present invention. It is preferably at least 8%. If the difference in shrinkage becomes too large, the resulting woven fabric becomes more three-dimensional, but the low heat shrinkable yarn may be loosened too much, depending on the yarn arrangement density and the texture, so the upper limit is made about 30%. .. The heat shrinkage rate is measured by the following method. That is, a sample having a length of 35 cm is sampled, a load of 10 g is hung on the sample end so that the sample is in a linear state, and a mark representing a length of 20 cm in the longitudinal direction of the sample is attached. With the load applied, heat treatment is performed for 2 minutes in a high temperature atmosphere set to the heat treatment temperature of the woven fabric (heat treatment for heat shrinkage), and after the heat treatment, the length of the marked part (L ) Is measured to the nearest 0.1 mm. The contraction rate is calculated by the following formula. The shrinkage rate of the yarn is determined by the average value of 5 samples.
Shrinkage rate (%)=(20−L/20)×100
As will be described later, the heat treatment for heat shrinkage may be dry heat or wet heat. When the heat treatment for heat shrinkage is dry heat, the heat shrinkage rate of the yarn is also measured in the dry heat state and treated with wet heat. If so, the heat shrinkage rate of the yarn is also measured in a moist heat state.
高熱収縮糸としては、熱可塑性重合体によって構成される糸で収縮性の高い糸を配すればよい。熱可塑性重合体としては、ポリエステル系重合体、ポリオレフィン系重合体、ポリアミド系重合体等が挙げられる。低熱収縮糸としては、上記した熱可塑性重合体によって構成される糸で熱収縮性の低い糸や、天然繊維等を用いてもよい。 As the high heat shrinkable yarn, a yarn made of a thermoplastic polymer and having high shrinkability may be arranged. Examples of the thermoplastic polymer include polyester-based polymers, polyolefin-based polymers, polyamide-based polymers and the like. As the low heat shrinkable yarn, a yarn having a low heat shrinkability, which is a yarn formed of the above-mentioned thermoplastic polymer, or a natural fiber may be used.
また、高熱収縮糸は、熱接着性を有する熱接着繊維によって構成される。熱接着繊維によって構成されることにより、熱処理を施すことによって、熱収縮させるとともに、熱接着成分を溶融または軟化させて、高熱収縮糸同士の交点を熱接着させることができる。高熱収縮糸は、織物の升目を形成しているため、升目の交点が熱接着により固定されることから、目ズレがなく形態安定性に優れた立体織物を得ることができる。熱接着繊維としては、芯部に高融点重合体、鞘部に熱接着成分となる低融点重合体が配された芯鞘型複合繊維を好ましく用いることができる。繊維表面が熱接着成分に覆われているため、効率的に熱接着が可能であり、かつ、芯部は熱処理によっても影響されず繊維形態を維持するため機械的強力に貢献するためである。なお、熱処理についてであるが、熱収縮のための熱処理と、熱接着のための熱処理は、一度で同時に行ってもよいし、同時ではなく逐次でもよい。 Further, the high heat shrinkable yarn is composed of a heat bonding fiber having a heat bonding property. Since the heat-adhesive fiber is constituted by the heat-adhesive fiber , it is possible to heat-shrink by heat treatment and melt or soften the heat-adhesive component to heat-bond the intersections of the high-heat-shrinkable yarns. Since the high heat shrinkable yarn forms the squares of the woven fabric, the intersections of the squares are fixed by thermal bonding, so that it is possible to obtain a three-dimensional woven fabric with no misalignment and excellent in shape stability. As the heat-bonding fiber, a core-sheath type composite fiber having a high-melting polymer in the core and a low-melting polymer serving as a heat-bonding component in the sheath can be preferably used. This is because the surface of the fiber is covered with the heat-adhesive component, so that the heat-bonding can be efficiently performed, and the core portion maintains the fiber shape without being affected by the heat treatment and contributes to the mechanical strength. Regarding the heat treatment, the heat treatment for heat shrinkage and the heat treatment for heat bonding may be performed once at the same time, or may be performed sequentially instead of simultaneously.
高熱収縮糸および低熱収縮糸は、連続繊維によって構成されるものであって、１本の繊維によって構成されるモノフィラメント糸である。経糸および緯糸の太さは、得られる織物の用途や要求性能に応じて適宜設計すればよく、１００〜８０００デシテックス程度とする。また、配する織密度、織物の目合いの大きさや目付についても、用途に応じて適宜設計すればよい。 High heat shrinkage yarn and the low thermal shrinkage yarn, be one that is constituted by continuous fibers, monofilament yarn constituted by one fiber. The thickness of the warp and the weft may be appropriately designed according to the intended use of the woven fabric and the required performance, and is about 100 to 8000 decitex. Also, the weaving density to be arranged, the size of the mesh of the woven fabric, and the fabric weight may be appropriately designed according to the application.
高熱収縮糸と低熱収縮糸とを準備し、蜂巣織組織において、上記した長浮する領域に高熱収縮糸を配し、それ以外の領域に低熱収縮糸を配し、織物を製織し、次いで加熱処理を施して、高熱収縮糸を収縮させ、立体構造を形成させる。加熱処理としては、ピンテンター型の熱風加熱装置、熱風乾燥機等を用いて行うとよい。加熱処理は、湿熱であっても乾熱であってもよい。 A high heat shrinkable yarn and a low heat shrinkable yarn are prepared, and in the honeycomb weave structure, the high heat shrinkable yarn is arranged in the above-mentioned long floating region, the low heat shrinkable yarn is arranged in the other region, and the fabric is woven and then heated. The treatment is performed to shrink the high heat shrinkable yarn and form a three-dimensional structure. The heat treatment may be performed using a pintenter type hot air heating device, a hot air dryer, or the like. The heat treatment may be wet heat or dry heat.
本発明によれば、蜂巣織組織の特定の領域に高熱収縮糸を配して、それ以外の領域に低熱収縮糸を配して、織物を織成し、その後、熱処理を施すことにより、高熱収縮糸を収縮させる。これにより、高熱収縮糸が配された升目を形成する箇所が、熱収縮によって織物の両表面により突出して顕れて大きな凹凸を形成することになり、厚みがより一層増して、三次元的な立体構造の織物が得られる。蜂巣織組織において、熱収縮の異なる糸を特定の領域に配することにより、立体構造の織物を容易に提供することが可能となり、得られた織物は、土木資材、産業資材、生活資材等の各種の分野や用途に適用可能である。 According to the present invention, a high heat-shrinkable yarn is arranged in a specific region of a honeycomb weave structure, a low heat-shrinkable yarn is arranged in the other region, and a woven fabric is woven, and then subjected to heat treatment to obtain a high heat-shrinkable yarn. Contract. As a result, the areas where the high-heat-shrinkable yarns are arranged to form the squares are projected by both surfaces of the woven fabric due to the heat-shrinking to form large irregularities, and the thickness is further increased, resulting in a three-dimensional three-dimensional structure. A structural fabric is obtained. By arranging yarns with different heat shrinkage in a specific area in a honeycomb structure, it becomes possible to easily provide a woven fabric having a three-dimensional structure, and the obtained woven fabric can be used for civil engineering materials, industrial materials, daily life materials, etc. It is applicable to various fields and applications.
次に、実施例に基づいて本発明を具体的に説明するが、本発明が必ずしもこれらの実施例に限定されるものでないことはいうまでもない。また。乾熱収縮率は、上記の方法により測定した。 Next, the present invention will be specifically described based on Examples, but it goes without saying that the present invention is not necessarily limited to these Examples. Also. The dry heat shrinkage was measured by the above method.
実施例
高熱収縮糸として、ポリエステル系熱接着性繊維からなるモノフィラメント糸を準備した。この糸は、芯鞘型複合形態(芯：鞘＝１：２．７)で、芯がポリエチレンテレフタレート（融点２６０℃）、鞘が共重合ポリエステル（融点１６０℃）である単糸繊度が１１００ｄｔｅｘのモノフィラメント糸である。この高熱収縮糸の熱収縮率（乾熱状態１８０℃×２分）は、１０．８％であった。
一方、低熱収縮糸として、ポリエステル系モノフィラメントを準備した。この糸は、単相構造で、ポリエチレンテレフタレート（融点２６０℃）からなる単糸繊度が１１００ｄｔｅｘのモノフィラメント糸である。この低熱収縮糸の熱収縮率（乾熱状態１８０℃×２分）は、０．８％であった。
Example As the high heat shrinkable yarn, a monofilament yarn made of polyester-based heat adhesive fiber was prepared. This yarn has a core-sheath composite form (core:sheath=1:2.7), the core is polyethylene terephthalate (melting point 260° C.), and the sheath is copolyester (melting point 160° C.), and the single yarn fineness is 1100 dtex. It is a monofilament thread. The heat shrinkage ratio (dry heat state: 180° C.×2 minutes) of this high heat shrinkable yarn was 10.8%.
On the other hand, a polyester monofilament was prepared as the low heat shrinkable yarn. This yarn is a monofilament yarn having a single-phase structure and made of polyethylene terephthalate (melting point 260° C.) and having a single yarn fineness of 1100 dtex. The heat shrinkage rate (dry heat state: 180° C.×2 minutes) of this low heat shrinkable yarn was 0.8%.
上記高熱収縮糸と低熱収縮糸を用いて、蜂巣織組織として、図３に示す完全組織からなる蜂巣織組織により編成される織物を製織した。なお、織組織図において、経糸および緯糸の「２」には、高熱収縮糸を配して、長浮する領域で升目を形成する領域を形成した。それ以外の領域「１」の経糸および緯糸には、低熱収縮糸を配した。織密度は、経糸密度１７本／２．５４ｃｍ、緯糸密度２５本／２．５４ｃｍとした。
製織により得られた蜂巣織組織の織物について、ノギスを用いて厚みを測定したところ、０．５ｍｍであった。
Using the above-mentioned high heat shrinkable yarn and low heat shrinkable yarn, a woven fabric having a honeycomb weave design consisting of a complete design shown in FIG. 3 was woven as a honeycomb weave design. In the woven structure diagram, "2" of the warp yarn and the weft yarn was arranged with a high heat shrinkable yarn to form a region in which a grid is formed in a region that floats long. Low heat shrinkable yarns were arranged on the warp yarns and the weft yarns in the other region “1”. The weaving density was 17 threads/2.54 cm and the weft density was 25 threads/2.54 cm.
The thickness of the honeycomb woven fabric obtained by weaving was measured using a caliper and it was 0.5 mm.
次いで、得られた蜂巣織物をピンテンター型熱処理装置に導入して１８０℃、２分間熱処理を施して、本発明の製造方法に係る立体構造の織物を得た。得られた織物は、熱処理前に比較して、厚みが増し、升目が両表面に突出して顕れ、立体的な凹凸感を有する織物であった。また、升目の交点は、熱接着により固定されており、目ズレが起きずに形態保持性が良好であった。厚みを測定したところ、１．１ｍｍであり、２倍以上厚みが増していた。
Next, the obtained honeycomb fabric was introduced into a pin tenter type heat treatment apparatus and heat-treated at 180° C. for 2 minutes to obtain a three-dimensional structure fabric according to the production method of the present invention. The obtained woven fabric was thicker than that before the heat treatment, and the squares were projected on both surfaces, and the woven fabric had a three-dimensional unevenness. In addition, the intersections of the squares were fixed by thermal bonding, and the shape retention was good without any eye misalignment. When the thickness was measured, it was 1.1 mm, which was more than twice as thick.
Claims (2)
蜂巣織組織において、熱による収縮性の異なる２種の糸として高熱収縮糸と低熱収縮糸とを用い、前記高熱収縮糸および低熱収縮糸はいずれもモノフィラメント糸であり、高熱収縮糸が熱接着性繊維によって構成される糸であり、
蜂巣織組織の経糸および緯糸の長浮きする領域で升目を形成する領域に高熱収縮糸を配し、前記以外の領域には低熱収縮糸を配し、
織物を織成した後、熱処理を施して、低熱収縮糸よりも高熱収縮糸を大きく熱収縮させて、立体構造を形成させるとともに、熱接着性繊維の熱接着成分が溶融または軟化することにより、高熱収縮糸が配された経糸と緯糸の交点が熱接着することを特徴とする立体構造を有する織物の製造方法。 A method for producing a woven fabric having a three-dimensional structure, which is a woven fabric having a complete structure of a honeycomb woven structure in at least a part of the woven structure,
In a honeycomb structure, a high heat shrinkable yarn and a low heat shrinkable yarn are used as two types of yarns having different heat shrinkability, and the high heat shrinkable yarn and the low heat shrinkable yarn are both monofilament yarns, and the high heat shrinkable yarn has thermal adhesiveness. A thread made up of fibers,
A high heat shrinkable yarn is arranged in a region forming a square in a region where long warps and wefts of a honeycomb structure are arranged, and a low heat shrinkable yarn is arranged in a region other than the above,
After weaving the woven fabric, heat treatment is performed to cause heat shrinkage of the high heat shrinkable yarn to be larger than that of the low heat shrinkable yarn to form a three-dimensional structure, and the heat-adhesive component of the heat-adhesive fiber is melted or softened so that high heat A method for producing a woven fabric having a three-dimensional structure, characterized in that an intersection of a warp yarn and a weft yarn on which shrink yarns are arranged is heat-bonded .
Thermal bonding fibers, the core portion is a high melting point polymer, method for producing a fabric having a three-dimensional structure according to claim 1, wherein the sheath part is core-sheath composite fibers comprising a low melting polymer.
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