JP4916781B2 - Method for producing double layer yarn - Google Patents
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Description
本発明は、複重層糸の製造方法に関するものである。 The present invention relates to a manufacturing method of the multi-layer yarn.
従来、多くの化学繊維・合成繊維が生産され天然繊維と共にそれぞれの繊維特性を生かして種々の分野に使用されている。しかしながら、各繊維の特性はある特定の用途では満足されるものの、他の用途においてはその特性が逆に欠点となることがしばしばある。このために、これらの各繊維を必要に応じて交織あるいは混紡し、特性の短所を補完して所望の用途に供するようにしている。 Conventionally, many chemical fibers / synthetic fibers have been produced and used in various fields by taking advantage of their respective fiber characteristics together with natural fibers. However, while the properties of each fiber are satisfactory in certain applications, the properties are often disadvantageous in other applications. For this purpose, these fibers are woven or blended as necessary to supplement the disadvantages of the characteristics and provide them for a desired use.
２種の短繊維束を紡績工程の最終工程である精紡工程において、紡出、加撚して得られる複重層糸がその一例として広く知られている。例えば、古くからの複重層糸として、芯部がポリエステル短繊維、鞘部が綿からなる複重層糸がある（例えば、特許文献１参照）。この複重層糸を用いてなる織編物は、綿織編物と同様の風合いを有すると共にアイロンセット性、形態安定性などを有しており、ユニフォーム衣料に好適に使用することができる。 A multilayer yarn obtained by spinning and twisting two kinds of short fiber bundles in the fine spinning process, which is the final process of the spinning process, is widely known as an example. For example, as an old multi-layered yarn, there is a multi-layered yarn in which a core portion is a polyester short fiber and a sheath portion is made of cotton (for example, see Patent Document 1). The woven or knitted fabric using the multi-layered yarn has a texture similar to that of the cotton woven knitted fabric and has iron setability, form stability and the like, and can be suitably used for uniform clothing.
複重層糸は、原料の異なる２種の繊維の一方を芯部に、他方を鞘部に配したものに止まらず、原料は同一であるが異なる特性の繊維を芯部、鞘部に配したものもある。例えば、特許文献２には、単糸繊度の異なる２種のポリエステル短繊維の一方を芯部に、他方を鞘部に配した複重層糸が開示されており、この複重層糸を用いれば、張腰感と共にソフト感に優れる織編物が得られる。
しかしながら、上記のような複重層糸は、一般に粗紡工程で芯鞘型の複合粗糸を作製した後、精紡して得られるものである。この製法によれば、複合粗糸の段階では芯部が鞘部に完全に被覆されているものの、精紡時のドラフトにより芯部の一部が糸表面に露出した複重層糸が得られるため、織編物の染色欠点を誘発するという問題がある。 However, the multi-layer yarn as described above is generally obtained by producing a core-sheath type composite roving yarn by a roving process and then spinning it. According to this production method, although the core portion is completely covered with the sheath portion at the composite roving stage, a multi-layered yarn is obtained in which a portion of the core portion is exposed on the yarn surface by a draft during spinning. There is a problem of inducing a dyeing defect of the woven or knitted fabric.
本発明は、このような問題点を解決し、被覆性に優れた複重層糸と、該複重層糸を安定に製造できる方法とを提供することを目的とするものである。 An object of the present invention is to solve such problems and provide a multi-layer yarn excellent in covering property and a method capable of stably producing the multi-layer yarn.
本発明者は、上記の課題を解決すべく鋭意検討の結果、精紡工程において、複重層糸の芯部及び鞘部をそれぞれ形成しうる紡績糸及び繊維束同士を絡ませた状態で加撚すれば、被覆性に優れた複重層糸が得られることを見出し、本発明に到達した。 As a result of intensive studies to solve the above-mentioned problems, the present inventor has twisted the spun yarn and the fiber bundle that can form the core portion and the sheath portion of the multi-layer yarn, respectively, in the fine spinning process. Thus, the present inventors have found that a multi-layer yarn excellent in covering property can be obtained, and reached the present invention.
すなわち、本発明は、断面が芯鞘型の二層構造をなし、芯部が紡績糸でありかつ鞘部が短繊維からなり、芯部の撚方向と同方向に鞘部が捲回している複重層糸の製造方法において、紡績糸と繊維束とをリング精紡機のフロントローラーへ同時に供給して複重層糸を製造する方法であって、セカンドローラーとフロントローラーとの間のドラフト比（Ｄ）を０．９６０＜Ｄ＜１．０００に設定して前記短繊維束をフロントローラーへ供給しつつ、前記紡績糸を同じフロントローラーへ供給し、フロントローラーにおいて両者を重ね合わせた後、前記紡績糸と同方向に加撚することを特徴とする複重層糸の製造方法を要旨とするものである。
That is, the present invention has a two-layer structure with a core-sheath cross section, the core part is a spun yarn, the sheath part is made of short fibers, and the sheath part is wound in the same direction as the twisting direction of the core part. In the method for producing a multi-layer yarn, a method for producing a multi-layer yarn by simultaneously supplying a spun yarn and a fiber bundle to a front roller of a ring spinning machine, wherein a draft ratio between the second roller and the front roller (D ) Is set to 0.960 <D <1.000 and the short fiber bundle is supplied to the front roller, the spun yarn is supplied to the same front roller, the two are superposed on the front roller, and then the spinning The gist of the present invention is a method for producing a multilayer yarn characterized by twisting in the same direction as the yarn.
本発明の複重層糸は、被覆性に優れているため、織編物を染色してもイラツキ感、杢感などの欠点が生じ難い。したがって、この複重層糸を用いれば、各種用途に用いうる織編物を得ることができる。 Since the multi-layer yarn of the present invention is excellent in covering properties, defects such as irritation and wrinkle are unlikely to occur even when a woven or knitted fabric is dyed. Therefore, if this multi-layer yarn is used, a woven or knitted fabric that can be used for various applications can be obtained.
さらに、本発明の長短複合紡績糸の製造方法によれば、被覆性に優れた複重層糸を安定して得ることができる。 Furthermore, according to the method for producing long and short composite spun yarns of the present invention, it is possible to stably obtain a multi-layer yarn having excellent coverage.
以下、本発明を詳細に説明する。 Hereinafter, the present invention will be described in detail.
本発明の複重層糸は、断面が芯鞘型の二層構造をなし、芯部、鞘部共に短繊維からなるものである。ここでいう「芯部、鞘部共に短繊維からなる」とは、芯部、鞘部共に複数の短繊維が集合して形成されているという意味であり、短繊維１本から形成されているという意味ではない。また、「短繊維」とは、連続繊維でない短い繊維（ステープル）を指す。 The multi-layer yarn of the present invention has a two-layer structure with a core-sheath cross section, and both the core and the sheath are made of short fibers. The phrase “consisting of short fibers in both the core and the sheath” as used herein means that the core and the sheath are formed of a plurality of short fibers, and are formed from a single short fiber. It does not mean that. “Short fiber” refers to short fibers (staples) that are not continuous fibers.
係る短繊維としては、例えば、綿、羊毛、麻、竹などの天然繊維、芳香族ポリエステル、脂肪族ポリエステル、ポリアミド、ポリオレフィン、ポリアクリロニトリルなどの合成繊維、ビスコースレーヨン、溶剤紡糸セルロース繊維などの再生繊維、ジアセテート、トリアセテートなどの半合成繊維があげられ、本発明では、これらを単独又は混合して用いるが、中でも、綿、溶剤紡糸セルロース繊維、羊毛を用いることが好ましい。短繊維の単糸繊度、繊維長はどのようなものであっても特に限定されるものではないが、綿、溶剤紡糸セルロース繊維の場合は、単糸繊度として０．６〜４．２ｄｔｅｘが、繊維長として１０〜５０ｍｍが好ましく、羊毛の場合は、短繊維の平均直径として１５〜３０μｍが、繊維長として６４〜１０２ｍｍが好ましい。 Examples of such short fibers include natural fibers such as cotton, wool, hemp and bamboo, synthetic fibers such as aromatic polyester, aliphatic polyester, polyamide, polyolefin and polyacrylonitrile, viscose rayon and solvent-spun cellulose fibers. Examples thereof include semi-synthetic fibers such as fibers, diacetates, and triacetates. In the present invention, these are used alone or in combination. Among these, cotton, solvent-spun cellulose fibers, and wool are preferably used. The single yarn fineness and fiber length of the short fiber are not particularly limited, but in the case of cotton and solvent-spun cellulose fiber, the single yarn fineness is 0.6 to 4.2 dtex. The fiber length is preferably 10 to 50 mm, and in the case of wool, the average diameter of short fibers is preferably 15 to 30 μm, and the fiber length is preferably 64 to 102 mm.
本発明は、芯部及び鞘部に配された短繊維双方の特性を併せ持つ複重層糸であるから、双方を互いに異なる繊維から構成させることが好ましい。具体的には、原料の異なる繊維を使用することや、原料は同じであるが異なる特性を有している繊維を使用することなどがあげられる。中でも双方の短繊維として最も好ましい組み合わせとしては、芯部にポリエステル短繊維、鞘部に綿を配するのがよい。 Since the present invention is a multi-layered yarn having the characteristics of both short fibers arranged in the core and the sheath, it is preferable that both are composed of different fibers. Specifically, it is possible to use fibers having different raw materials, or to use fibers having the same raw material but different characteristics. Of these, the most preferred combination of both short fibers is preferably polyester short fibers in the core and cotton in the sheath.
また、本発明の複重層糸においては、芯部の撚方向と同方向に鞘部が捲回している必要がある。鞘部の捲回方向を芯部と逆方向にすると、複重層糸の引張強度が著しく低下すると共に被覆性も低下する。これは、精紡工程において、芯部に配された紡績糸を解撚方向に導いてしまうからである。 In the multilayer yarn of the present invention, the sheath portion needs to be wound in the same direction as the twisting direction of the core portion. When the winding direction of the sheath part is opposite to the core part, the tensile strength of the multi-layer yarn is remarkably lowered and the covering property is also lowered. This is because in the spinning process, the spun yarn arranged in the core portion is guided in the untwisting direction.
上記のように本発明の複重層糸は、芯部に鞘部が捲回する構造を有している。したがって、本発明の複重層糸と、カバーリング機を用いて得られるシングルカバードヤーン、芯鞘構造を有する複合粗糸を精紡して得られる複重層糸、２本の粗糸を同時に精紡して得られる複重層糸といった従来公知の糸とは、芯鞘型の二層構造をなしている点で共通しているが、その構造的特徴は、明確に相違する。つまり、本発明の複重層糸においては、鞘部自体の加撚が非常に甘く、短繊維がばらけたような状態、言い換えれば、芯部に配された紡績糸の周囲に短繊維があたかも１本づつ均一に積み重なるかのような態様で巻きついているのに対し、上記従来公知の糸は何れも、鞘部自体の加撚が強く、短繊維同士が収束している。したがって、本発明の複重層糸は、芯部の内、糸表面に露出する部分が非常に少ないのに対し、上記従来公知の糸は何れも芯部へ螺旋状に捲回している鞘部の隙間から芯部が露出している。 As described above, the multi-layer yarn of the present invention has a structure in which the sheath portion is wound around the core portion. Therefore, the double-layer yarn of the present invention, the single-covered yarn obtained by using the covering machine, the double-layer yarn obtained by spinning the composite roving having the core-sheath structure, and the two rovings are simultaneously spun. The conventionally known yarn such as the multi-layer yarn obtained in this way is common in that it has a core-sheath type two-layer structure, but the structural features are clearly different. That is, in the multi-layer yarn of the present invention, the sheath itself is very untwisted and the short fibers are scattered, in other words, it is as if the short fibers are around the spun yarn arranged in the core portion. Whereas the yarns are wound in such a manner that they are uniformly stacked one by one, the above-mentioned conventionally known yarns all have a strong twist of the sheath itself and the short fibers converge. Therefore, the multi-layer yarn of the present invention has very few exposed portions on the yarn surface in the core portion, whereas all of the conventionally known yarns have a sheath portion spirally wound around the core portion. The core is exposed from the gap.
このように本発明の複重層糸と上記従来公知の糸とは、外観が全く異なっている。そして、本発明の作用効果は、上記の構造的特徴により奏されるものであり、そのような特徴を有しない従来公知の糸は、本発明の作用効果を全く奏しえないのである。 Thus, the appearance of the multi-layer yarn of the present invention and the conventionally known yarn are completely different. The operational effects of the present invention are exhibited by the above structural features, and conventionally known yarns that do not have such features cannot exhibit the operational effects of the present invention at all.
本発明の複重層糸は被覆性に優れているため、外観上は芯部に配された短繊維のみからなる紡績糸と酷似している。したがって、本発明の複重層糸を用いた織編物は、染色してもイラツキ感、杢感などの欠点が生じ難い。この織編物の用途は、多岐に渡り、具体例として、スポーツウエア、カジュアルウエア、作業服、事務服、学生服、業務用エプロンなどがあげられる。 Since the multi-layer yarn of the present invention is excellent in coverage, it is very similar in appearance to a spun yarn consisting only of short fibers arranged in the core. Therefore, the knitted or knitted fabric using the multi-layer yarn of the present invention is less prone to defects such as irritation and wrinkle even when dyed. The use of the knitted and knitted fabrics is wide-ranging. Specific examples include sportswear, casual wear, work clothes, office clothes, school uniforms, and business apron.
次に、本発明の複重層糸の製造方法について説明する。 Next, the manufacturing method of the multilayer yarn of this invention is demonstrated.
本発明の複重層糸の製造方法（以下、「本発明の製造方法」と記す）においては、まず、公知法により得られる紡績糸と粗糸とを用意する。これらの内、紡績糸は、複重層糸の芯部を形成するためのものである。この紡績糸は、当然のことながら加撚されており、下記（１）式よって算出される撚係数が２．０〜４．５であることが好ましい。 In the method for producing a multi-layer yarn of the present invention (hereinafter referred to as “the production method of the present invention”), first, a spun yarn and a coarse yarn obtained by a known method are prepared. Of these, the spun yarn is for forming the core of the multi-layer yarn. This spun yarn is naturally twisted, and it is preferable that the twist coefficient calculated by the following formula (1) is 2.0 to 4.5.
一方、粗糸は、鞘部を形成するためのものである。 On the other hand, the roving is for forming a sheath.
上記２糸を用意した後は、粗糸を精紡機に導入し、セカンドローラーとフロントローラーとの間のドラフト比を特定範囲に設定し、繊維束をフロントローラーへ供給しながら、上記の紡績糸を同じフロントローラーへ供給し、両者を重ね合わせ、前記紡績糸と同方向に加撚することで本発明の複重層糸を得ることができる。 After preparing the above two yarns, the spun yarn is introduced into the spinning machine, the draft ratio between the second roller and the front roller is set to a specific range, and the fiber bundle is supplied to the front roller, Is supplied to the same front roller, the two are superposed, and twisted in the same direction as the spun yarn, whereby the multilayer yarn of the present invention can be obtained.
本発明の製造方法を、図面を用いてさらに具体的に説明する。 The production method of the present invention will be described more specifically with reference to the drawings.
図１は、本発明の製造方法の一実施態様を示す概略説明図である。 FIG. 1 is a schematic explanatory view showing one embodiment of the production method of the present invention.
図１に示すリング精紡機に供給された粗糸１は、バックローラー２、２′、エプロン３、３′及びセカンドローラー４、４′を介してドラフトされ、短繊維束８となる。そして、短繊維束８を、弛緩した状態でフロントローラー５、５′に供給するため、セカンドローラーとフロントローラーとの間のドラフト比（Ｄ）を０．９６０＜D＜１．０００に設定する。これにより、短繊維束の糸道が左右に振られるのと同時に該短繊維束が開繊される。そうすると、紡績糸の周囲に短繊維があたかも１本づつ均一に積み重なるかのような態様で巻きつき、複重層糸の被覆性が飛躍的に向上する。 The roving 1 supplied to the ring spinning machine shown in FIG. 1 is drafted through back rollers 2, 2 ′, aprons 3, 3 ′ and second rollers 4, 4 ′ to form a short fiber bundle 8. In order to supply the short fiber bundle 8 to the front rollers 5 and 5 'in a relaxed state, the draft ratio (D) between the second roller and the front roller is set to 0.960 <D <1.000. . Thereby, the yarn path of the short fiber bundle is swung left and right, and at the same time, the short fiber bundle is opened. As a result, the short fibers are wound around the spun yarn as if they are uniformly stacked one by one, and the coverage of the multi-layer yarn is greatly improved.
ここで、セカンドローラーとフロントローラーとの間のドラフト比（Ｄ）は、所謂機械ドラフトを指し、下記式（２）により算出される。 Here, the draft ratio (D) between the second roller and the front roller indicates a so-called mechanical draft, and is calculated by the following equation (2).
ドラフト比が０．９６０以下であると、短繊維束の糸道が左右に大きく振れすぎて芯部の被覆に斑が発生したり、場合によっては、紡績糸と短繊維束とを重ね合わせることができなくなる。一方、１．０００以上であると、短繊維束が弛緩せずに突っ張った状態となるため、紡績糸と短繊維束との絡みつきが促進されない。なお、紡績糸と短繊維束との絡みつき度合いを考慮し、ドラフト比の上限は、０．９９０とするのが好ましい。 When the draft ratio is 0.960 or less, the yarn path of the short fiber bundle is swung too much to the left and right, and the coating of the core portion is uneven. In some cases, the spun yarn and the short fiber bundle are overlapped. Can not be. On the other hand, if it is 1.000 or more, the short fiber bundle is stretched without being loosened, so that the entanglement between the spun yarn and the short fiber bundle is not promoted. In consideration of the degree of entanglement between the spun yarn and the short fiber bundle, the upper limit of the draft ratio is preferably 0.990.
一方、紡績糸６は、プレスローラー７、７′を介してフロントローラー５、５′へ供給される。紡績糸６の給糸張力としては、特に限定されず、糸道を形成しうる程度であればよい。ただし、張力をあまり低く設定してしまうと、芯部と鞘部とが逆転したり交撚状となったりする場合があるので好ましくない。一方、高すぎると糸切れする場合がある。 On the other hand, the spun yarn 6 is supplied to the front rollers 5, 5 'via the press rollers 7, 7'. The supply tension of the spun yarn 6 is not particularly limited as long as the yarn path can be formed. However, if the tension is set too low, the core portion and the sheath portion may be reversed or may have a twisted shape, which is not preferable. On the other hand, if it is too high, the thread may break.
その後、フロントローラー５、５′において、内側に紡績糸６が、外側に短繊維束８が配されるように両者を重ね合わせる。紡績糸６と短繊維束８とを重ね合わせるにあたり、特別なものは必要なく、短繊維束８が弛緩した状態であるのに対し、紡績糸６が突っ張った状態であるため、必然的に芯部に紡績糸６が、鞘部に短繊維束８が配されるのである。 Thereafter, the front rollers 5 and 5 'are overlapped with each other so that the spun yarn 6 is arranged on the inner side and the short fiber bundle 8 is arranged on the outer side. When the spun yarn 6 and the short fiber bundle 8 are overlapped, no special thing is necessary, and the short fiber bundle 8 is in a relaxed state, whereas the spun yarn 6 is in a stretched state, so that the core is inevitably cored. The spun yarn 6 is arranged in the part, and the short fiber bundle 8 is arranged in the sheath part.
紡績糸６と短繊維束８とを重ね合わせた後は、スネルワイヤーガイド９を通過させ、スピンドル１１とリングトラベラ１０とにより加撚して本発明の複重層糸１２を得る。ここで、この加撚は、撚方向として紡績糸６と同方向に行わなければならず、逆方向に行ってしまうと紡績糸６が解撚され、得られる複重層糸の引張強度が著しく低下すると共に被覆性も低下してしまう。さらに、織編物の風合いをソフトなものにできるという観点から、加撚は甘撚りとするのが好ましく、具体的には、下記（３）式よって算出される撚係数が１．３〜３．３であることが好ましい。 After the spun yarn 6 and the short fiber bundle 8 are superposed, the snell wire guide 9 is passed through and twisted by the spindle 11 and the ring traveler 10 to obtain the multilayer yarn 12 of the present invention. Here, this twisting must be performed in the same direction as the spun yarn 6 as the twist direction, and if it is performed in the reverse direction, the spun yarn 6 is untwisted, and the tensile strength of the resulting multilayer yarn is significantly reduced. In addition, the coverage is also reduced. Further, from the viewpoint that the texture of the woven or knitted fabric can be made soft, the twist is preferably a sweet twist. Specifically, the twist coefficient calculated by the following equation (3) is 1.3 to 3. 3 is preferred.
得られた複重層糸は、通常精紡管糸として巻き取られる。したがって、工場出荷の際は、公知の仕上工程に投入しチーズにすることが好ましい。 The obtained multi-layer yarn is usually wound up as a fine spinning tube yarn. Therefore, at the time of factory shipment, it is preferable to use a known finishing process to make cheese.
次に、実施例により本発明を具体的に説明する。 Next, the present invention will be described specifically by way of examples.
（実施例１）
粗糸１として綿粗糸２００ｇｒ／３０ｙｄを図１に示すリング精紡機に供給し、粗糸１をバックローラー２、２′エプロン３、３′及びセカンドローラー４、４′を介して、４５．２倍にドラフトして短繊維束８とした後、該短繊維束８を弛緩した状態でフロントローラー５、５′に供給した。セカンドローラー４、４′の表面速度は１３．５６ｍ／分であり、フロントローラー５、５′の表面速度は、セカンドローラー４、４′とフロントローラー５、５′との間のドラフト比が０．９８８となるように、１３．４０ｍ／分に設定した。
Example 1
A cotton coarse yarn 200 gr / 30 yd as the coarse yarn 1 is supplied to the ring spinning machine shown in FIG. 1, and the coarse yarn 1 is passed through the back roller 2, 2 ′ apron 3, 3 ′ and second rollers 4, 4 ′. After drafting twice to make the short fiber bundle 8, the short fiber bundle 8 was supplied to the front rollers 5, 5 'in a relaxed state. The surface speed of the second rollers 4 and 4 ′ is 13.56 m / min, and the surface speed of the front rollers 5 and 5 ′ is 0 in the draft ratio between the second rollers 4 and 4 ′ and the front rollers 5 and 5 ′. It was set to 13.40 m / min to be .988.
一方、紡績糸６として、撚方向がＺ方向で撚係数が２．０のポリエステル紡績糸８０番手を、プレスローラー７、７′を介してフロントローラー５、５′に供給した。そして、該フロントローラーにおいて紡績糸６と短繊維束８とを重ね合わせた後、スピンドル回転数８０００ｒｐｍにて、撚方向Ｚ方向、撚係数２．６で加撚し、３２番手（英式綿番手）の本発明の複重層糸１２を得た。 On the other hand, 80 spun polyester spun yarn having a twist direction of Z and a twist coefficient of 2.0 as the spun yarn 6 was supplied to the front rollers 5, 5 'via the press rollers 7, 7'. Then, after the spun yarn 6 and the short fiber bundle 8 were superposed on the front roller, the yarn was twisted at a spindle rotation speed of 8000 rpm with a twisting direction of Z direction and a twisting factor of 2.6. ) Of the present invention was obtained.
（比較例１）
紡績糸６の撚方向をＺ方向に替えてＳ方向にする以外は、実施例１と同様にして複重層糸を得た。
(Comparative Example 1)
A multilayer yarn was obtained in the same manner as in Example 1 except that the twist direction of the spun yarn 6 was changed to the Z direction and changed to the S direction.
（比較例２）
フロントローラーの表面速度を１３．４０ｍ／分に替えて１３．０２ｍ／分に設定することでセカンドローラーとフロントローラーとの間のドラフト比を０．９６０とする以外は、実施例１と同様にして複重層糸を得た。
(Comparative Example 2)
The surface speed of the front roller was changed to 13.40 m / min and set to 13.02 m / min, so that the draft ratio between the second roller and the front roller was 0.960, as in Example 1. Thus, a multi-layer yarn was obtained.
（比較例３）
フロントローラーの表面速度を１３．４０ｍ／分に替えて１３．５６ｍ／分に設定することでセカンドローラーとフロントローラーとの間のドラフト比を１．０００とする以外は、実施例１と同様にして複重層糸を得た。
(Comparative Example 3)
The surface speed of the front roller was changed to 13.40 m / min and set to 13.56 m / min, so that the draft ratio between the second roller and the front roller was 1.000. Thus, a multi-layer yarn was obtained.
以上の実施例、比較例に係る複重層糸をそれぞれカセ取りした後、直接染料を含有する浴で同時に染色し、被覆性や外観などについて評価した。 Each of the multi-layer yarns according to the above Examples and Comparative Examples was diced, and then simultaneously dyed in a bath containing a direct dye, and the covering property and appearance were evaluated.
実施例１に係る複重層糸は、芯部の内、糸表面に露出した部分が非常に少なく、摩擦を与えても芯部と鞘部とが剥離し難い糸であった。これに対し、比較例１に係る複重層糸は、引張強度が低く、長手方向の至る所で芯部が糸表面に露出していた。また、比較例２に係る複重層糸は、太さ斑の多い糸であり、比較例３に係る複重層糸は、摩擦を与えると容易に芯部と鞘部とが剥離する糸であった。 The multi-layered yarn according to Example 1 was a yarn in which the portion of the core portion exposed on the yarn surface was very small, and the core portion and the sheath portion were not easily separated even when friction was applied. In contrast, the multi-layer yarn according to Comparative Example 1 had low tensile strength, and the core portion was exposed on the yarn surface throughout the longitudinal direction. In addition, the multi-layer yarn according to Comparative Example 2 is a yarn with a lot of thick spots, and the multi-layer yarn according to Comparative Example 3 was a yarn in which the core portion and the sheath portion easily peeled when friction was applied. .
１ 粗糸
２、２′ バックローラー
３、３′ エプロン
４、４′ セカンドローラー
５、５′ フロントローラー
６ 紡績糸
７、７′ プレスローラー
８ 短繊維束
９ スネルワイヤーガイド
１０ リングトラベラ
１１ スピンドル
１２ 複重層糸
DESCRIPTION OF SYMBOLS 1 Coarse yarn 2, 2 'Back roller 3, 3' Apron 4, 4 'Second roller 5, 5' Front roller 6 Spinning yarn 7, 7 'Press roller 8 Short fiber bundle 9 Snell wire guide 10 Ring traveler 11 Spindle 12 Duplex Layered yarn
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| JP6211885B2 (en) * | 2013-10-11 | 2017-10-11 | ユニチカトレーディング株式会社 | Thermal insulation fabric |
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| JPS616341A (en) * | 1984-06-20 | 1986-01-13 | 東洋紡績株式会社 | Composite yarn |
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