JP6398189B2 - Heat and abrasion resistant multiple fabric - Google Patents
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- JP6398189B2 JP6398189B2 JP2013269335A JP2013269335A JP6398189B2 JP 6398189 B2 JP6398189 B2 JP 6398189B2 JP 2013269335 A JP2013269335 A JP 2013269335A JP 2013269335 A JP2013269335 A JP 2013269335A JP 6398189 B2 JP6398189 B2 JP 6398189B2
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Description
本発明は、耐熱耐摩耗性を有する摺動性多重織物に関する。 The present invention relates to a slidable multiple fabric having heat and abrasion resistance.
従来からフッ素樹脂はその低摩擦係数を生かして摺動部材の表層にラミネートやコーティングされて様々な場所で使用されている。しかしながら、フッ素樹脂のラミネートやコーティングではフッ素樹脂膜が薄く、かつ非接着性のため剥がれやすく、長期的に摺動性を維持するためにはラミネートやコーティングを繰り返す必要があった。このような欠点を解消するためにフッ素樹脂を繊維化し、織り編み物や不織布として摺動部材の表面に配置させることで摩擦耐久性を向上させ、さらに他素材と接着しやすい織り編み物と複合してより強固に接着する摺動材が開発されている。そして近年では、フッ素樹脂の耐熱性を生かして、プリンターなどのＯＡ機器の摺動部にも使用されている。 Conventionally, a fluororesin has been used in various places by being laminated or coated on the surface layer of a sliding member by taking advantage of its low friction coefficient. However, in the lamination and coating of fluororesin, the fluororesin film is thin and non-adhesive, so that it is easy to peel off. In order to maintain the slidability for a long time, it is necessary to repeat the lamination and coating. In order to eliminate these disadvantages, the fluororesin is made into a fiber and placed on the surface of the sliding member as a woven or non-woven fabric to improve friction durability, and further combined with a woven or knitted fabric that easily adheres to other materials. Sliding materials that adhere more firmly have been developed. In recent years, it has also been used in sliding parts of office automation equipment such as printers by taking advantage of the heat resistance of fluororesins.
例えば、特許文献１には自動車のスタビライザーバーの防振ゴムの摩擦を低減するため、多層構造を有する布帛で、一方の表面がフッ素系繊維を含み、他方の表面が熱融着性繊維を含んでいることを特徴とする布帛と防振ゴムの摺動面への接着性を向上させたものが開示されている。 For example, Patent Document 1 discloses a fabric having a multilayer structure in order to reduce friction of an anti-vibration rubber for a stabilizer bar of an automobile, one surface including a fluorine-based fiber and the other surface including a heat-fusible fiber. What improved the adhesiveness to the sliding surface of the fabric and vibration-proof rubber characterized by the above is disclosed.
さらに特許文献２には一方の表面がフッ素系繊維を含んでなり、他方の表面がフッ素系繊維以外の繊維に予め樹脂が被覆してなるディップ糸を含んでいることを特徴とする布帛によりゴムとの接着性を改善させる技術が開示されている。 Further, in Patent Document 2, one surface includes a fluorinated fiber, and the other surface includes a dip yarn in which a fiber other than the fluorinated fiber is coated with a resin in advance. A technique for improving the adhesiveness is disclosed.
また、特許文献３には横断面Ｃ字状を呈し、無端状に形成された本体樹脂部と、この本体樹脂部の内側面に、本体樹脂部の長手に沿って設けられた帆布とを備え、この帆布は本体樹脂部に設けられた基布と、前記基布の表面の一部を覆うように基布に設けられ、基布よりも低い摩擦特性を有するフッ素繊維摺動布とを備えたことを特徴とするマンコンベアの移動手摺が開示されている。 Patent Document 3 includes a main body resin portion that has a C-shaped cross section and is formed endlessly, and a canvas that is provided on the inner side surface of the main body resin portion along the length of the main body resin portion. The canvas includes a base cloth provided in the main body resin portion, and a fluorine fiber sliding cloth provided on the base cloth so as to cover a part of the surface of the base cloth and having a friction characteristic lower than that of the base cloth. A moving handrail of a man conveyor is disclosed.
しかしながら、上記特許文献１、２に具体的に記載された布帛を、高温環境下で処理した上で摺動させる用途に使用すると、ベース側の繊維が破断し、耐久性の低下が起きやすかった。 However, when the fabrics specifically described in Patent Documents 1 and 2 are used for sliding after treatment in a high temperature environment, the fibers on the base side break and durability tends to decrease. .
特許文献３記載の技術は、走行中のマンコンベアベルトの摩擦低減を図り寿命を伸ばすものであるが、マンコンベアベルトの内側にある帆布と摺動布帛の固定を容易に且つ確実におこなうためのもので、マンコンベアベルトでの使用環境下での摺動を前提としており、具体的に記載された布帛では高温状態が続くと耐久性が極端に低くなるものであった。 The technique described in Patent Document 3 is intended to reduce the friction of the traveling man conveyor belt and extend the life. However, the canvas and the sliding cloth on the inner side of the man conveyor belt can be fixed easily and reliably. However, it is premised on sliding in a use environment with a man conveyor belt, and the fabric described specifically has extremely low durability when the high temperature state continues.
このようにフッ素樹脂摺動材に関する従来の多重布帛は、フッ素樹脂面で摺動させ、もう一方の面（ベース面）で他部材とより強固に接着させることのみが追求され、高温環境下において十分な摺動性を発揮する耐熱耐摩耗性布帛については未だ得られていないのが実状である。 As described above, the conventional multi-layer fabric relating to the fluororesin sliding material is sought only to slide on the fluororesin surface and more firmly adhere to the other member on the other surface (base surface). In fact, a heat-resistant and wear-resistant fabric that exhibits sufficient slidability has not yet been obtained.
本発明は、かかる従来技術の問題点を改善し、ベース面の最適な構成とすることで、耐熱性と耐摩耗性が高く、従来より高温環境下でも長期間摺動性を発揮することができる耐熱耐摩耗性布帛を提供することを目的とする。 The present invention improves the problems of the prior art and has an optimum base surface configuration, so that it has high heat resistance and wear resistance, and can exhibit slidability for a long time even in a higher temperature environment than before. An object of the present invention is to provide a heat-resistant and wear-resistant fabric.
かかる課題を解決するため本発明は、次の構成を有する。
（１）摺動織物とベース織物からなる多重織物であって、摺動織物がポリテトラフルオロエチレン（ＰＴＦＥ）繊維を含んだ織物であり、ベース織物は２００℃で１６８時間熱処理後の引張強度が３．０ｃＮ／ｄｔｅｘ以上である繊維からなる織物であり、摺動織物とべース織物が互いの経糸と／あるいは緯糸で互いに絡み合い結合していることを特徴とする、耐熱耐摩耗性多重織物。
（２）前記摺動織物がタテ糸、ヨコ糸共にＰＴＦＥ繊維からなることを特徴とする、（１）記載の耐熱耐摩耗性多重織物。
（３）前記摺動織物の摺動方向が織物のタテ又はヨコ方向に平行であることを特徴とする、（１）または（２）記載の耐熱耐摩耗性多重織物。
（４）前記摺動織物のタテ・ヨコ表面比率が１．１以上であることを特徴とする、（１）から（３）のいずれかに記載の耐熱耐摩耗性多重織物。
（５）前記ベース織物のカバーファクターが１３５０〜２３００であることを特徴とする、（１）から（４）のいずれかに記載の耐熱耐摩耗性多重織物。
（６）前記ベース織物が平織物であることを特徴とする、（１）から（５）のいずれかに記載の耐熱耐摩耗性多重織物。
（７）前記摺動織物とベース織物の絡み合い結合の頻度が０．１以上０．６以下であることを特徴とする、（１）から（６）のいずれかに記載の耐熱耐摩耗性多重織物。
（８）前記ベース織物を構成する繊維の熱処理後の引張強度保持率が８０％以上であることを特徴とする（１）から（７）のいずれかに記載の耐熱耐摩耗性多重織物。
（９）摺動相手材の温度が２００℃以上になる環境下で使用されることを特徴とする、（１）から（８）のいずれかに記載の耐熱耐摩耗性多重織物。
In order to solve this problem, the present invention has the following configuration.
(1) A multi-woven fabric composed of a sliding fabric and a base fabric, wherein the sliding fabric includes a polytetrafluoroethylene (PTFE) fiber, and the base fabric has a tensile strength after heat treatment at 200 ° C. for 168 hours. A heat-resistant and wear-resistant multi-woven fabric, characterized in that it is a woven fabric composed of fibers of 3.0 cN / dtex or more, and a sliding woven fabric and a base woven fabric are intertwined with each other by mutual warps and / or wefts.
(2) The heat-resistant and wear-resistant multi-woven fabric according to (1), wherein the sliding fabric is made of PTFE fiber for both warp and weft.
(3) a feature that the sliding direction of the sliding fabric is parallel to the longitudinal or transverse direction of the fabric, (1) or (2) heat abrasion resistance multiplex fabric according.
(4) said to feature the vertical and horizontal surface ratio of the sliding fabric is 1.1 or more, heat wear resistance multiplex fabric according to any one of (1) to (3).
(5) the base fabric cover factor is the feature that it is 1,350 to 2,300, heat wear resistance multiplex fabric according to any one of (1) (4).
(6) The heat- and abrasion-resistant multi-fabric according to any one of (1) to (5), wherein the base fabric is a plain fabric.
(7) The frequency of the entangled bond between the sliding fabric and the base fabric is 0.1 or more and 0.6 or less, and the heat-resistant and wear-resistant multilayer according to any one of (1) to (6) fabric.
(8) The heat-resistant and wear-resistant multi-woven fabric according to any one of (1) to (7), wherein the fiber constituting the base fabric has a tensile strength retention after heat treatment of 80% or more.
(9) The heat-resistant and wear-resistant multi-woven fabric according to any one of (1) to (8), which is used in an environment where the temperature of the sliding partner material is 200 ° C. or higher.
本発明によれば、耐熱性と耐摩耗性が高く、従来よりも高温環境下でも長期間摺動性を発揮することができる耐熱耐摩耗性布帛が提供される。 According to the present invention, there is provided a heat and wear resistant fabric that has high heat resistance and wear resistance and can exhibit slidability for a long time even in a higher temperature environment than before.
本発明による耐熱耐摩耗性布帛は、摺動織物とベース織物からなる多重織物であって、摺動織物がＰＴＦＥ繊維を含んだ織物であり、ベース織物は２００℃で１６８時間熱処理後の引張強度が３．０ｃＮ／ｄｔｅｘ以上である繊維からなる織物で構成され、さらに摺動織物とべース織物が互いの経糸と／あるいは緯糸で互いに絡み合い結合していることが必要である。 The heat-resistant and wear-resistant fabric according to the present invention is a multiple fabric composed of a sliding fabric and a base fabric, and the sliding fabric is a fabric containing PTFE fibers, and the base fabric has a tensile strength after heat treatment at 200 ° C. for 168 hours. It is necessary that the woven fabric is made of a fiber having a fiber strength of 3.0 cN / dtex or more, and that the sliding fabric and the base fabric are intertwined with each other by the warp and / or the weft.
本発明において用いられる低摩擦摺動を可能とするＰＴＦＥ繊維としてはポリテトラフルオロエチレン繊維が用いられる。ポリテトラフルオロエチレン繊維としては、テトラフルオロエチレンのホモポリマー、また全体の９０モル％以上、好ましくは９５モル％以上がテトラフルオロエチレンであるコポリマーが挙げられるが、摺動特性の点からテトラフルオロエチレン単位の含有量は多い方が好ましく、ホモポリマーであることがより好ましい。上記テトラフルオロエチレンに共重合可能な単量体としては、トリフルオロエチレン、トリフルオロクロロエチレン、テトラフルオロプロピレン、ヘキサフルオロプロピレンなどのフッ化ビニル化合物やさらにプロピレン、エチレン、イソブチレン、スチレン、アクリロニトリルなどのビニル化合物があげられるが、これらに限定する必要はない。かかるモノマーの中でもフッ化ビニル化合物、それもフッ素含有量の多い化合物であることが繊維摩擦特性の上から好ましい。 Polytetrafluoroethylene fiber is used as the PTFE fiber that enables low friction sliding used in the present invention. Examples of the polytetrafluoroethylene fiber include tetrafluoroethylene homopolymers and copolymers in which 90 mol% or more, preferably 95 mol% or more of the whole is tetrafluoroethylene. A higher unit content is preferable, and a homopolymer is more preferable. Examples of the monomer copolymerizable with tetrafluoroethylene include vinyl fluoride compounds such as trifluoroethylene, trifluorochloroethylene, tetrafluoropropylene, hexafluoropropylene, and further propylene, ethylene, isobutylene, styrene, acrylonitrile, and the like. Examples of the vinyl compound include, but need not be limited to these. Among these monomers, a vinyl fluoride compound, which is also a compound having a high fluorine content, is preferable from the viewpoint of fiber friction characteristics.
ＰＴＦＥ繊維には、セルロース系繊維溶液に微細粉末を混合して紡糸した後セルロースを昇華させる湿式紡糸法、フィルムを割繊するスリット法やフィルムを擦過して開繊するスカイブ法などがあり、その製造法に適した重合度のＰＴＦＥ樹脂が使用されている。 PTFE fibers include a wet spinning method in which a fine powder is mixed into a cellulose fiber solution and spun, and then the cellulose is sublimated, a slit method in which the film is split, and a skive method in which the film is rubbed and opened. A PTFE resin having a polymerization degree suitable for the production method is used.
ＰＴＦＥ繊維は耐熱性のある柔らかい材質であり、高温で処理しても優れた摺動性を示すが、柔らかさ故により摩滅し擦り減り易く耐久性に乏しい傾向にある。しかしながら、本発明においては、耐熱耐久性のあるベース織物との多重織物とすることで、高温環境下でも優れた摺動性と耐久性をもつ耐熱耐摩耗性織物が得られるものである。すなわち本発明のような多重織物とすることで、高温環境下での摺動により擦り減るＰＴＦＥを、摺動織物とベース織物の絡み合い結合点やベース織物の摺動面側で受け取め、ＰＴＦＥの一部が絡み合い結合点やベース織物の摺動織物側表面にコートされるとともに、余ったＰＴＦＥはベース織物の凹凸部分に溜まっていくこととなる。そのため多重織物全体が摩滅していっても、ベース織物の凹凸部分に溜まったＰＴＦＥがベース織物表面をコートし続けることで、布帛表面は継続的にＰＴＦＥコートされた状態となり、長期にわたり摺動性を維持し続ける。 PTFE fiber is a heat-resistant soft material and exhibits excellent slidability even when treated at high temperatures, but tends to wear out and wear due to its softness and tends to have poor durability. However, in the present invention, a heat-resistant and wear-resistant woven fabric having excellent slidability and durability even in a high-temperature environment can be obtained by forming a multiple woven fabric with a heat-resistant and durable base fabric. That is, by using the multiple woven fabric as in the present invention, PTFE that is worn away by sliding in a high temperature environment is received at the entangled connection point between the sliding fabric and the base fabric or the sliding surface side of the base fabric. A part of the PTFE is coated on the entangled joint point and the sliding fabric side surface of the base fabric, and the excess PTFE is accumulated in the uneven portion of the base fabric. Therefore, even if the entire multi-woven fabric is worn out, PTFE accumulated in the uneven portions of the base fabric continues to coat the surface of the base fabric, so that the fabric surface is continuously PTFE-coated and slidable for a long time. Continue to maintain.
本発明のＰＴＦＥ繊維の形態としては、１本のフィラメントで構成されるモノフィラメント、複数本のフィラメントで構成されるマルチフィラメントのいずれも用いることができる。 As a form of the PTFE fiber of the present invention, either a monofilament composed of one filament or a multifilament composed of a plurality of filaments can be used.
また、本発明のＰＴＦＥ繊維を構成するモノフィラメントまたはマルチフィラメントからなる繊維の総繊度としては、５０〜２０００ｄｔｅｘが好ましく、さらに好ましくは１００〜１０００ｄｔｅｘの範囲内であることが好ましい。布帛を構成する繊維の総繊度が５０ｄｔｅｘ以上であると繊維の強力が強く、製織時の糸切れを低減できるので工程通過性が向上する。２０００ｄｔｅｘ以下であれば布帛表面の凹凸が少ないので、摺動性への影響がなく、かつ、布帛の剛性が高くなり過ぎず、柔軟性が損なわれないので使用面の形状に沿い易くなる。 In addition, the total fineness of the monofilament or multifilament fiber constituting the PTFE fiber of the present invention is preferably 50 to 2000 dtex, more preferably 100 to 1000 dtex. When the total fineness of the fibers constituting the fabric is 50 dtex or more, the strength of the fibers is strong and thread breakage during weaving can be reduced, so that the process passability is improved. If it is 2000 dtex or less, there are few unevenness | corrugations on the surface of a fabric, it will have no influence on slidability, the rigidity of a fabric will not become high too much, and flexibility will not be impaired, and it will become easy to follow the shape of a use surface.
また、摺動織物はＰＴＦＥ繊維とその他の繊維を合撚した繊維や、ＰＴＦＥ繊維のみあるいはその他の繊維を混ぜた紡績糸を用いることもできるが、摺動特性の点からＰＴＦＥ繊維のみを使用する方が好ましい。 In addition, the sliding fabric may be a fiber in which PTFE fibers and other fibers are twisted together, or a spun yarn in which only PTFE fibers or other fibers are mixed, but only PTFE fibers are used in terms of sliding characteristics. Is preferred.
本発明の耐熱耐摩耗性多重織物を構成するベース織物は、２００℃で１６８時間熱処理した後の引張強度が３．０ｃＮ／ｄｔｅｘ以上である繊維からなるものである。 The base fabric constituting the heat and abrasion resistant multiple fabric of the present invention is composed of fibers having a tensile strength of 3.0 cN / dtex or more after heat treatment at 200 ° C. for 168 hours.
ベース織物を構成する繊維を２００℃で１６８時間熱処理した後の引張強度が３．０ｃＮ／ｄｔｅｘ以上であることで、高温環境下での摺動時にベース繊維が破れにくくなり、耐熱耐久性が著しく向上する。より好ましくは４．２ｃＮ／ｄｔｅｘ以上である。上限としては、高いほど好ましいが、工業的には、最大３５ｃＮ／ｄｔｅｘ程度であり、２３ｃＮ／ｄｔｅｘ以下がより好ましい。 The tensile strength after heat-treating the fibers constituting the base fabric at 200 ° C. for 168 hours is 3.0 cN / dtex or more, so that the base fibers are not easily broken when sliding in a high temperature environment, and the heat resistance is remarkably high. improves. More preferably, it is 4.2 cN / dtex or more. As an upper limit, it is so preferable that it is high, but industrially it is about 35 cN / dtex at the maximum, and 23 cN / dtex or less is more preferable.
また、ベース織物を構成する繊維の２００℃で１６８時間熱処理後の引張強度保持率は８０％以上であることが好ましい。８０％以上であることで、２００℃付近で使用される場合において、十分な耐摩耗性を得ることが出来る。より好ましくは８５％以上であり、さらに好ましくは９０％以上である。上限としては１００％であることが最も好ましいが、工業的には９５％以下程度である。 The tensile strength retention after heat treatment at 200 ° C. for 168 hours of the fibers constituting the base fabric is preferably 80% or more. When it is 80% or more, sufficient wear resistance can be obtained when used near 200 ° C. More preferably, it is 85% or more, More preferably, it is 90% or more. The upper limit is most preferably 100%, but is industrially about 95% or less.
ベース織物を構成する繊維としては、ポリパラフェニレンテレフタルアミド、ポリメタフェニレンイソフタルアミド、ガラス、カーボン、ポリパラフェニレンベンゾビスオキサゾール（ＰＢＯ）、ポリフェニレンサルファイド（ＰＰＳ）、全芳香族ポリエステルから選ばれる１つ以上の繊維であって、かつ２００℃で１６８時間熱処理した後の引張強度が３．０ｃＮ／ｄｔｅｘ以上である繊維を用いることが好ましい。上記繊維の中では耐熱性、耐薬品性、耐加水分解性など過酷な環境下でも耐久性のあるＰＰＳ繊維であることがより好ましい。このようなＰＰＳ繊維は、例えば、溶融紡糸法により製糸をする際に上記範囲となるよう延伸倍率等の延伸条件を制御することにより得ることができる。 The fiber constituting the base fabric is one selected from polyparaphenylene terephthalamide, polymetaphenylene isophthalamide, glass, carbon, polyparaphenylene benzobisoxazole (PBO), polyphenylene sulfide (PPS), and wholly aromatic polyester. It is preferable to use a fiber having the above-described fiber and a tensile strength of 3.0 cN / dtex or more after heat treatment at 200 ° C. for 168 hours. Among the above fibers, PPS fibers that are durable even under harsh environments such as heat resistance, chemical resistance, and hydrolysis resistance are more preferable. Such a PPS fiber can be obtained, for example, by controlling the drawing conditions such as the draw ratio so as to be in the above-mentioned range when the yarn is produced by the melt spinning method.
本発明の摺動織物とベース織物は互いの経糸と／あるいは緯糸で互いに絡み合い結合されていることが必要である。この絡み合い結合の頻度は０．１以上０．６以下であることが好ましく、０．２以上０．４以下であることがより好ましい。絡み合いの結合の頻度を０．１以上とすることでベース織物と摺動織物の接合がより強固になり、ベース織物と摺動織物がずれにくくなり、かつベース織物と摺動織物での摩擦による摩滅が防げる。一方０．６以下とすることで、絡み増加で糸の隙間が減少し、インチ（２．５４ｃｍ）あたりの糸本数を表す糸密度が上がりにくくなることを防ぎ、タテ糸／緯糸の密度バランスを整えることが出来る。 The sliding fabric and the base fabric of the present invention need to be intertwined with each other with their warps and / or wefts. The frequency of the entangled bond is preferably 0.1 or more and 0.6 or less, and more preferably 0.2 or more and 0.4 or less. By setting the frequency of entanglement to be 0.1 or more, the base fabric and the sliding fabric are more firmly joined, the base fabric and the sliding fabric are less likely to be displaced, and the friction between the base fabric and the sliding fabric is caused. Wear can be prevented. On the other hand, by setting it to 0.6 or less, it is possible to prevent the yarn gap due to the increase in entanglement from decreasing and the yarn density representing the number of yarns per inch (2.54 cm) from becoming difficult to increase, and to maintain the density balance of warp / weft. Can be arranged.
また、本発明の耐熱耐摩耗性多重織物が一方向の摺動に使用される場合、摺動織物の摺動面側の織物のタテ糸方向又はヨコ糸方向に平行な方向を摺動方向とすることが好ましい。タテ糸やヨコ糸に対して、斜め方向に摺動させると、目合い部（隣り合う経糸同士と隣り合う緯糸同士の真ん中に位置する部分）と織物表面（タテ糸やヨコ糸が渡っている部分）という高低差のある部分を交互に進む摺動していくのに対し、平行方向に摺動させれば、比較的高低差の小さい状態で摺動させることができるので、よりいっそう摩擦抵抗を小さくすることができる。方向性のない摺動の場合は、方向を決める必要はないが、織物表面の高低差は小さい方が摩擦抵抗が小さくなるため好ましい。 Further, when the heat-resistant and wear-resistant multiple fabric of the present invention is used for sliding in one direction, the direction parallel to the warp yarn direction or the weft yarn direction of the fabric on the sliding surface side of the sliding fabric is defined as the sliding direction. It is preferable to do. When sliding in an oblique direction with respect to the warp and weft yarns, the mesh portion (the portion located in the middle of the adjacent warps and the adjacent wefts) and the fabric surface (the warp and weft yarns cross) The part with the difference in height (alternating part) slides alternately, but if it is slid in the parallel direction, it can be slid with a relatively small difference in height, so it is even more resistant to friction. Can be reduced. In the case of sliding without directionality, it is not necessary to determine the direction, but it is preferable that the difference in height of the fabric surface is smaller because the frictional resistance becomes smaller.
さらに、摺動方向に平行な繊維の表面積を摺動方向に垂直な繊維の表面積で除したタテ・ヨコ表面比率が１．１以上であることが好ましく、１．２以上であることがより好ましい。１．１未満であると摺動方向に対して垂直な繊維の量が多くなり、摩擦係数が上がるだけでなく、熱でより柔軟になったＰＴＦＥ繊維の摩滅を促進させてしまうため、好ましくない。上限としては３未満であることが好ましい。３以上であると、繊維の拘束性が弱くなり、摩滅し易くなるため、好ましくない。タテ・ヨコ表面比率を制御する方法としては、摺動方向に太い繊維を用いることや、製織時の張力を制御する、例えば経糸張力を大きくすることで経糸の繊維束を広げ面積を大きくできるなどで実現できる。上記タテ・ヨコ表面比率は後述の方法で求めた値とする。 Further, the vertical / horizontal surface ratio obtained by dividing the surface area of the fiber parallel to the sliding direction by the surface area of the fiber perpendicular to the sliding direction is preferably 1.1 or more, and more preferably 1.2 or more. . If it is less than 1.1, the amount of fibers perpendicular to the sliding direction increases, which not only increases the coefficient of friction, but also promotes wear of PTFE fibers that have become more flexible with heat, which is not preferable. . The upper limit is preferably less than 3. When it is 3 or more, the restraint property of the fiber becomes weak and wears easily, which is not preferable. Methods for controlling the vertical / horizontal surface ratio include using thick fibers in the sliding direction and controlling the tension during weaving. Can be realized. The vertical / horizontal surface ratio is a value determined by the method described later.
本発明の耐熱耐摩耗性多重織物におけるベース織物のカバーファクターは、耐摩耗性の点から１３５０〜２３００であることが好ましく、１５５０〜２２００であることがより好ましい。１３５０未満であると、十分な強度が得られないだけでなく、織物の空隙率が大きすぎ、摺動時にＰＴＦＥ樹脂の一部をベース織物で十分に担持できなくなり、耐久性が得られなくなる。また、カバーファクターが２３００よりも大きくなると織物の凹凸が少なくなり、ＰＴＦＥが保持できなくなる。上記カバーファクターは後述の方法で求めた値とする。 The cover factor of the base fabric in the heat and abrasion resistant multiple fabric of the present invention is preferably from 1350 to 2300, more preferably from 1550 to 2200, from the viewpoint of wear resistance. If it is less than 1350, not only the sufficient strength cannot be obtained, but also the porosity of the fabric is too large, and a part of the PTFE resin cannot be sufficiently supported by the base fabric during sliding, and durability cannot be obtained. Further, when the cover factor is larger than 2300, the unevenness of the fabric is reduced, and PTFE cannot be held. The cover factor is a value obtained by the method described later.
本発明の耐摩耗性織物におけるベース織物の組織は、平織、綾織、サテンおよびその他組織が適用できるが、ベース織物は摩滅ＰＴＦＥを受け止める凹凸がより均一に分布していること、相手材との密着性を高くするには平滑性等が高い方がよいことなどから平織りが好ましい。 The base fabric in the wear-resistant fabric of the present invention can be applied to plain weave, twill, satin and other structures, but the base fabric has more evenly distributed irregularities for receiving worn PTFE, and is in close contact with the mating material. Plain weaving is preferred because higher smoothness and the like are better for improving the properties.
より好ましくはベース織物を平織り、摺動織物を平織りとした構造である。 More preferably, the base fabric is a plain weave and the sliding fabric is a plain weave.
かくして得られる本発明の耐熱耐摩耗性多重織物は、高温環境下において耐熱性に優れたベース織物が摺動織物のＰＴＦＥ繊維を強固に拘束し、かつ、ＰＴＦＥ繊維を多重織物内に蓄積する構造であるため、従来よりも高温環境下で用いられる摺動材とした場合において特に長期間摺動性を発揮することができ、例えば摺動相手材の温度が２００℃以上という高温環境下であっても好ましく使用することができる。本発明の耐熱耐摩耗性多重織物は特に２００℃以上の高温相手材と摺動させる場合従来の他のＰＴＦＥ摺動布帛に対して、より優れた耐久性向上効果を発揮できる。 The heat-resistant and wear-resistant multilayer fabric of the present invention thus obtained has a structure in which the base fabric excellent in heat resistance in a high-temperature environment firmly binds the PTFE fibers of the sliding fabric and accumulates the PTFE fibers in the multilayer fabric. Therefore, when the sliding material is used in a higher temperature environment than in the past, the sliding performance can be exhibited particularly for a long period of time, for example, in a high temperature environment where the temperature of the sliding material is 200 ° C. or higher. However, it can be preferably used. The heat-resistant and abrasion-resistant multi-woven fabric of the present invention can exhibit a superior durability improvement effect with respect to other conventional PTFE sliding fabrics, particularly when sliding with a high-temperature partner material of 200 ° C. or higher.
また、本発明の耐摩耗性多重織物に、必要に応じフッ素系潤滑剤などを添加することも可能である。 Moreover, it is also possible to add a fluorine-type lubricant etc. to the abrasion-resistant multilayer fabric of this invention as needed.
以下、本発明の実施例を比較例と共に説明する。 Examples of the present invention will be described below together with comparative examples.
なお、本実施例で用いる各種特性の測定方法は、以下のとおりである。 In addition, the measuring method of the various characteristics used by a present Example is as follows.
（１）引張強度（ｃＮ／ｄｔｅｘ）
織物を分解して得られた糸をＪＩＳ Ｌ１０１３：２０１０（化学繊維フィラメント糸試験方法）に準じて標準状態（２０℃×６５％ＲＨ）で破断強力を測定し、原糸繊度（ｄｔｅｘ）で除し、引張強度を計算した。
(1) Tensile strength (cN / dtex)
The breaking strength of the yarn obtained by disassembling the woven fabric was measured in a standard state (20 ° C. × 65% RH) according to JIS L1013: 2010 (chemical fiber filament yarn testing method), and divided by the yarn fineness (dtex). And the tensile strength was calculated.
（２）強度保持率（％）
２００℃、１６８時間オーブンで熱処理する前後の引張強度を（１）項に則り測定し、以下の方法で強度保持率を算出した。
強度保持率（％）＝（熱処理後の引張強度）／（熱処理前の引張強度）×１００
(2) Strength retention (%)
The tensile strength before and after heat treatment in an oven at 200 ° C. for 168 hours was measured according to the item (1), and the strength retention was calculated by the following method.
Strength retention (%) = (Tensile strength after heat treatment) / (Tensile strength before heat treatment) × 100
（３）摺動織物のタテ・ヨコ表面比率
摺動織物側の織物表面をキーエンス製マイクロスコープＶＨＸ−２０００にて３０倍に拡大した写真をもとに、摺動方向と平行なフッ素繊維の表面積と摺動方向に垂直なフッ素繊維の表面積の比率を計算した。
タテ・ヨコ表面比率＝（摺動方向に平行なフッ素繊維の表面積）／（摺動方向に垂直なフッ素繊維の表面積）
(3) Vertical / horizontal surface ratio of sliding fabric The surface area of the fluorine fibers parallel to the sliding direction based on a photograph of the fabric surface on the sliding fabric side enlarged 30 times with a Keyence microscope VHX-2000 The ratio of the surface area of the fluorine fibers perpendicular to the sliding direction was calculated.
Vertical / horizontal surface ratio = (surface area of fluorine fiber parallel to sliding direction) / (surface area of fluorine fiber perpendicular to sliding direction)
（４）摺動織物とベース織物の絡み合い結合の頻度（絡合頻度）（タテ糸を絡み糸とする場合、ヨコ糸を絡み糸とする場合（ ）内に読み替え）
少なくとも１ｃｍ四方のサイズの多重織物を分解し摺動織物のタテ糸（ヨコ糸）がベース織物側を通る回数に対して、摺動織物のタテ糸（ヨコ糸）とベース織物のヨコ糸（タテ糸）が絡み合う割合と、ベース織物のタテ糸（ヨコ糸）が摺動織物側を通る回数に対して、ベース織物のタテ糸（ヨコ糸）と摺動織物のヨコ糸（タテ糸）が絡み合う割合の平均値である。
Ａ＝摺動織物のタテ糸（ヨコ糸）とベース織物のヨコ糸（タテ糸）が絡み合う回数／摺動織物のタテ糸（ヨコ糸）がベース織物側を通る回数
Ｂ＝ベース織物のタテ糸（ヨコ糸）と摺動織物のヨコ糸（タテ糸）が絡み合う回数／ベース織物のタテ糸（ヨコ糸）が摺動織物側を通る回数
摺動織物とベース織物の絡み合い結合の頻度割合＝（Ａ＋Ｂ）／２
(4) Frequency of entanglement and coupling of sliding fabric and base fabric (entanglement frequency) (when warp yarn is used as entanglement yarn, when weft yarn is used as entanglement yarn, read in parentheses)
The warp yarn of the sliding fabric (the weft yarn) and the warp yarn of the base fabric (the warp yarn) and the warp yarn of the base fabric (the warp yarn) are compared with the number of times the warp yarn (the weft yarn) of the sliding fabric passes through the base fabric side by disassembling the multiple woven fabric of at least 1 cm square The warp yarn of the base fabric and the weft yarn of the sliding fabric (warp yarn) are intertwined with the ratio of the warp yarn of the base fabric and the number of times the warp yarn of the base fabric passes through the sliding fabric side. It is the average value of the ratio.
A = Number of times the warp yarn of the sliding fabric (the weft yarn) and the weft yarn of the base fabric (the warp yarn) are entangled / the number of times the warp yarn of the sliding fabric (the weft yarn) passes through the base fabric side B = the warp yarn of the base fabric Number of times that the weft yarn (warp yarn) and the weft yarn (warp yarn) of the sliding fabric are entangled / Number of times that the warp yarn (width yarn) of the base fabric passes through the sliding fabric side Frequency ratio of the intertwined connection between the sliding fabric and the base fabric = ( A + B) / 2
（５）織り密度
ＪＩＳＬ１０９６：２０１０（織物及び編物の生地試験方法）８．６．１Ａ法に準じ、試料を平らな台上に置き，不自然なしわ及び張力を除いて，異なる箇所について５０ｍｍのたて糸及びよこ糸の本数を数え，それぞれの平均値を単位長さについて算出した。
(5) Weaving density JISL1096: 2010 (Fabric and knitted fabric test method) According to the method of 8.6.1A, place the sample on a flat table and remove unnatural wrinkles and tension. The number of warps and wefts was counted, and the average value of each was calculated for the unit length.
（６）ベース織物のカバーファクター
ベース織物のカバーファクター（ＣＦ）は、各素材の比重差を鑑みて、以下の式にて算出した。
ＣＦ＝（ベース織物の経糸繊度（ｄｔｅｘ）／ベース織物の経糸繊維の比重）１／２×ベース織物の経糸密度（本／ｉｎ（２．５４ｃｍ））＋（ベース織物の緯糸繊度（ｄｔｅｘ）／ベース織物の緯糸繊維の比重）１／２×ベース織物の緯糸密度（本／ｉｎ（２．５４ｃｍ））
(6) Cover factor of base fabric The cover factor (CF) of the base fabric was calculated by the following formula in consideration of the specific gravity difference of each material.
CF = (base fabric warp fineness (dtex) / base fabric warp fiber specific gravity) 1/2 × base fabric warp density (main / in (2.54 cm)) + (base fabric weft fineness (dtex) / Specific gravity of the weft fibers of the base fabric) 1/2 x Weft density of the base fabric (lines / in (2.54 cm))
（７）リング摩耗試験(摩擦摩耗試験１、２)
ＪＩＳ Ｋ７２１８：１９８６ （プラスチックの滑り摩耗試験方法）Ａ法に準じ、織物は、縦３０ｍｍ、横３０ｍｍにサンプリングし、それぞれ同じ大きさの厚さ２ｍｍのアルミ板とポリカーボネート樹脂板の上に順に乗せてサンプルホルダーに固定した。
(7) Ring wear test (friction wear test 1, 2)
JIS K7218: 1986 (Plastic sliding wear test method) In accordance with method A, fabric is sampled 30 mm long and 30 mm wide, and placed on an aluminum plate and a polycarbonate resin plate of the same size, each 2 mm thick. Fixed to the sample holder.
相手材はＳ４５Ｃで作られた、外径 ２５．６ｍｍ、内径 ２０ｍｍ、長さ １５ｍｍ の中空円筒形状の表面をサンドペーパーで磨き、粗さ測定器（ミツトヨ製ＳＪ−２０１）にて測定し０．８μｍｍ±０．１Ｒａの範囲の相手材を使用した。 The mating material was made of S45C, and the surface of a hollow cylindrical shape having an outer diameter of 25.6 mm, an inner diameter of 20 mm, and a length of 15 mm was polished with sandpaper and measured with a roughness measuring instrument (SJ-201 manufactured by Mitutoyo Corporation). The counterpart material in the range of 8 μm ± 0.1 Ra was used.
リング摩耗試験機は、オリエンテック製ＭＯＤＥＬ：ＥＦＭ−III−ＥＮを用い、摩擦荷重：０．１５（ＭＰａ）、摩擦速度：１８０ｍｍ／秒にて試験を行った。 The ring wear tester used MODEL: EFM-III-EN manufactured by Orientec, and the test was performed at a friction load of 0.15 (MPa) and a friction speed of 180 mm / sec.
試験１は、熱処理前のサンプルを摩耗時間が１６８時間になるまで摺動させ、１６８時間後の摺動トルクを測定し、下記式より摩擦係数を算出すると共に、摺動後の織物サンプルの表面状態を観察し、フッ素部の摩滅がほとんどないものを◎、摩滅はあるが摩擦係数が安定しているものを○、摩滅して摩擦係数が上昇したものを△、織物が破壊されたものを×とした。
摩擦係数＝トルク（Ｎ）／荷重（Ｎ）
In Test 1, the sample before heat treatment was slid until the wear time reached 168 hours, the sliding torque after 168 hours was measured, the friction coefficient was calculated from the following formula, and the surface of the woven fabric sample after sliding Observe the condition, ◎ if there is almost no wear of the fluorine part, ○ if there is wear but the coefficient of friction is stable, △ if the coefficient of friction is increased by wear, △, if the fabric is destroyed X.
Friction coefficient = Torque (N) / Load (N)
試験２は、２００℃１６８時間熱処理後のサンプルを摩耗時間が８時間になるまでの摺動トルクを測定した。安定部分の摺動トルクを用い、下記式より摩擦係数を計算するとともに、摺動後の織物サンプルの表面状態を観察し、フッ素部の摩滅がほとんどないものを◎、摩滅はあるが摩擦係数が安定しているものを○、摩滅して摩擦係数が上昇したものを△、織物が破壊されたものを×とした。
摩擦係数＝トルク（Ｎ）／荷重（Ｎ）
In test 2, the sliding torque until the wear time of the sample after heat treatment at 200 ° C. for 168 hours was 8 hours was measured. Using the sliding torque of the stable part, calculate the friction coefficient from the following formula, observe the surface condition of the fabric sample after sliding, ◎ if there is little abrasion of the fluorine part, wear, but the friction coefficient is The stable ones were marked with ◯, the ones with increased friction coefficient due to abrasion were marked with △, and the ones with broken fabric were marked with ×.
Friction coefficient = Torque (N) / Load (N)
実施例１
ベース織物繊維として、２２０ｄｔｅｘ、５０フィラメント、引張強度４．９ｃＮ／ｄｔｅｘ、比重１．３４ｇ／ｃｍ３のＰＰＳ繊維をタテ糸、ヨコ糸に用い、摺動織物として４４０ｄｔｅｘ、６０フィラメント、比重２．３ｇ／ｃｍ３、ＰＴＦＥ繊維をタテ糸、ヨコ糸に用い、それぞれの織り密度がタテ４０＋８０本／ｉｎｃｈ（２．５４ｃｍ）（摺動織物タテ＋ベース織物タテ（本／ｉｎｃｈ（２．５４ｃｍ）、以下同じ）、ヨコ６４＋６４本／ｉｎｃｈ（２．５４ｃｍ）（摺動織物ヨコ＋ベース織物ヨコ（本／ｉｎｃｈ（２．５４ｃｍ）、以下同じ）、摺動織物とベース織物の絡み合いは摺動織物とベース織物のタテ糸を絡み糸として結合の頻度が０．５となるように、リボン織機にて２重平織物を製作した（リボン織機の特性上、ヨコ糸は２本同口で打ち込まれている。）。その後８０℃の精練槽にて精練を行い、２００℃でセットした。
Example 1
PPS fibers having 220 dtex, 50 filaments, tensile strength of 4.9 cN / dtex and specific gravity of 1.34 g / cm 3 are used as warp yarns and weft yarns as base fabric fibers, and 440 dtex, 60 filaments and specific gravity of 2.3 g are used as sliding fabrics. / Cm 3 , PTFE fiber is used for warp and weft yarns, and the weaving density of each is 40 + 80 warps / inch (2.54 cm) (sliding woven warp + base woven warp (main / inch (2.54 cm), below) Same), horizontal 64 + 64 / inch (2.54cm) (sliding woven fabric horizontal + base woven fabric horizontal (book / inch (2.54cm), the same applies hereinafter)) The entanglement between the sliding fabric and the base fabric is the sliding fabric and the base. A double flat fabric was produced with a ribbon loom so that the warp yarn of the fabric was entangled and the binding frequency was 0.5 (due to the characteristics of the ribbon loom, Co yarn is implanted with two same mouth.). Performs scouring at scouring bath then 80 ° C., was set at 200 ° C..
この織物を分解してタテ糸、ヨコ糸の引張強度、２００℃１６８時間処理後の引張強度、強度保持率を測定するとともに、織物として表面比率、摩擦摩耗試験機等で評価した結果を表１にまとめた。 Table 1 shows the results of disassembling this fabric, measuring the tensile strength of warp and weft yarns, the tensile strength after treatment at 200 ° C for 168 hours, and the strength retention, and evaluating the fabric with a surface ratio and a friction and wear tester. Summarized in
実施例２
ベース織物繊維として、２２０ｄｔｅｘ−１３４フィラメント、引張強度２１．３ｃＮ／ｄｔｅｘ、比重１．４４ｇ／ｃｍ３のポリパラフェニレンテレフタルアミド（商標“ケブラー”）繊維をタテ糸、ヨコ糸に用い、摺動織物として４４０ｄｔｅｘ、６０フィラメント、比重２．３ｇ／ｃｍ３、ＰＴＦＥ繊維をタテ糸、ヨコ糸に用い、それぞれの織り密度がタテ７０＋７０本／ｉｎｃｈ（２．５４ｃｍ）（摺動織物タテ＋ベース織物タテ（本／ｉｎｃｈ（２．５４ｃｍ）、以下同じ）、ヨコ６０＋６０本／ｉｎｃｈ（２．５４ｃｍ）（摺動織物ヨコ＋ベース織物ヨコ（本／ｉｎｃｈ（２．５４ｃｍ）、以下同じ）、摺動織物とベース織物の絡み合いは摺動織物とベース織物のタテ糸を絡み糸として結合の頻度が０．２となるように、レピア織機にて２重平織物を製作した。その後８０℃の精練槽にて精練を行い、２００℃でセットした。
Example 2
As a base fabric fiber, a sliding fabric using 220 dtex-134 filament, polyparaphenylene terephthalamide (trademark “Kevlar”) fiber having a tensile strength of 21.3 cN / dtex and a specific gravity of 1.44 g / cm 3 for warp and weft yarns. 440 dtex, 60 filaments, specific gravity 2.3 g / cm 3 , PTFE fibers are used for warp and weft yarns, and each weave density is 70 + 70 yarns / inch (2.54 cm) (sliding fabric warp + base fabric warp ( Book / inch (2.54 cm), the same applies hereinafter), width 60 + 60 / inch (2.54 cm) (sliding fabric width + base fabric width (book / inch (2.54 cm), the same applies hereinafter)), sliding fabric The base fabric is entangled so that the frequency of coupling is 0.2 using the warp yarn of the sliding fabric and the base fabric as the entanglement yarn. Were fabricated 2 Juhei fabric in a loom. Performs scouring at scouring bath then 80 ° C., was set at 200 ° C..
この織物を分解してタテ糸、ヨコ糸の引張強度、２００℃１６８時間処理後の引張強度、強度保持率を測定するとともに、織物として表面比率、摩擦摩耗試験機等で評価した結果を表１にまとめた。 Table 1 shows the results of disassembling this fabric, measuring the tensile strength of warp and weft yarns, the tensile strength after treatment at 200 ° C for 168 hours, and the strength retention, and evaluating the fabric with a surface ratio and a friction and wear tester. Summarized in
比較例１
ベース織物繊維として、４４０ｄｔｅｘ、６０フィラメント、引張強度１．８ｃＮ／ｄｔｅｘ、比重２．３ｇ／ｃｍ３、ＰＴＦＥ繊維をタテ糸、ヨコ糸に用いた以外は、実施例２と同様に、２重平織物を製作し、実施例２と同様の精練、セット処理を行った。この織物を、表面比率、摩擦摩耗試験機等で評価した結果を表１にまとめた。
Comparative Example 1
As in Example 2, a double flat fiber was used except that 440 dtex, 60 filaments, tensile strength 1.8 cN / dtex, specific gravity 2.3 g / cm 3 , and PTFE fiber were used for warp and weft. A woven fabric was produced and subjected to the same scouring and setting treatment as in Example 2. The results of evaluating this fabric with a surface ratio, a friction and wear tester, etc. are summarized in Table 1.
比較例２
ベース織物として、２２０ｄｔｅｘ、４８フィラメント、引張強度５．０ｃＮ／ｄｔｅｘ、比重１．３８ｇ／ｃｍ３のＰＥＴ繊維をタテ糸、ヨコ糸に用いた以外は、実施例２と同様に、２重平織物を製作し、実施例２と同様の精練、セット処理を行った。この織物を、表面比率、摩擦摩耗試験機等で評価した結果を表１にまとめた。
Comparative Example 2
A double flat woven fabric as in Example 2 except that PET fibers with 220 dtex, 48 filaments, tensile strength 5.0 cN / dtex, and specific gravity 1.38 g / cm 3 were used as warp and weft yarns as the base fabric. The same scouring and setting process as in Example 2 was performed. The results of evaluating this fabric with a surface ratio, a friction and wear tester, etc. are summarized in Table 1.
比較例３
ベース織物繊維として、２２０ｄｔｅｘ、５０フィラメント、引張強度３．３ｃＮ／ｄｔｅｘ、比重１．３４ｇ／ｃｍ３の低延伸ＰＰＳ繊維をタテ糸、ヨコ糸に用いた以外は、実施例１と同様に、２重平織物を製作し、実施例１と同様の精練、セット処理を行った。この織物を、表面比率、摩擦摩耗試験機等で評価した結果を表１にまとめた。
Comparative Example 3
As the base woven fiber, the same double as in Example 1 except that a low-stretched PPS fiber having 220 dtex, 50 filaments, tensile strength 3.3 cN / dtex, and specific gravity 1.34 g / cm 3 was used for warp and weft. A plain woven fabric was produced and subjected to the same scouring and setting treatment as in Example 1. The results of evaluating this fabric with a surface ratio, a friction and wear tester, etc. are summarized in Table 1.
実施例３〜５、参考例１
ベース織物、摺動織物の条件を表１のように種々変更して織物を作成し、実施例２と同
様の精練、セット処理を行った。この織物を分解してタテ糸、ヨコ糸の引張強度、２００
℃１６８時間処理後の引張強度、強度保持率を測定するとともに、織物として表面比率、
摩擦摩耗試験機等で評価した結果を表１にまとめた。
Examples 3-5, Reference Example 1
Fabrics were prepared by changing the conditions of the base fabric and sliding fabric as shown in Table 1, and the same scouring and setting treatment as in Example 2 was performed. This fabric is disassembled to obtain warp and weft tensile strength, 200
Measure the tensile strength and strength retention after processing at 168 ° C., and the surface ratio as a fabric.
The results of evaluation with a friction and wear tester are summarized in Table 1.
このように本発明の耐熱耐摩耗性多重織物とすることにより、高温環境下での耐熱耐摩耗性が飛躍的に向上することが明らかとなった。 As described above, it has been clarified that the heat and abrasion resistance in a high temperature environment is remarkably improved by using the heat and abrasion resistant multiple woven fabric of the present invention.
Claims (8)
表面比率＝（摺動方向に平行な繊維の表面積）／（摺動方向に垂直な繊維の表面積） The heat-resistant and wear-resistant multi-woven fabric according to claim 1 or 2, wherein the sliding fabric has a vertical / horizontal surface ratio of 1.1 or more.
Surface ratio = (surface area of fibers parallel to sliding direction) / (surface area of fibers perpendicular to sliding direction)
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| WO2020137287A1 (en) | 2018-12-26 | 2020-07-02 | 東レ株式会社 | Sliding fabric |
| WO2021124687A1 (en) | 2019-12-20 | 2021-06-24 | 東レ株式会社 | Fabric, and cable cover for robot arm |
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| CN105386204A (en) * | 2015-12-21 | 2016-03-09 | 常熟市卫丰针纺织有限公司 | Bamboo-fiber and chinlon blended fabric |
| JP6957943B2 (en) * | 2017-04-05 | 2021-11-02 | 東レ株式会社 | Sliding fabric and window glass stabilizer |
| WO2023171604A1 (en) * | 2022-03-07 | 2023-09-14 | 東レ株式会社 | Fabric |
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| JPH02234945A (en) * | 1989-03-09 | 1990-09-18 | Nippon Pillar Packing Co Ltd | Sliding material |
| JP2005220486A (en) * | 2004-02-06 | 2005-08-18 | Toray Ind Inc | Fluorofiber union cloth and composite material |
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| KR20210101234A (en) | 2018-12-26 | 2021-08-18 | 도레이 카부시키가이샤 | sliding fabric |
| WO2021124687A1 (en) | 2019-12-20 | 2021-06-24 | 東レ株式会社 | Fabric, and cable cover for robot arm |
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