JP2008223205A - Method and apparatus for producing organic spun yarn - Google Patents
Method and apparatus for producing organic spun yarn Download PDFInfo
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本発明は、静電噴霧法を用いて有機重合性物質から有機紡績糸を製造するための製造方法及び製造装置に関する。 The present invention relates to a production method and a production apparatus for producing an organic spun yarn from an organic polymerizable substance using an electrostatic spray method.
静電噴霧法は、高電圧を利用した繊維製造方法の一種であり、均質で微細な繊維を製造しうることを特徴としている。この静電噴霧法においては、静電噴霧された有機物質溶液が電荷反発による脱溶媒を受けて固化される。 The electrostatic spraying method is a kind of fiber manufacturing method using a high voltage, and is characterized in that it can manufacture uniform and fine fibers. In this electrostatic spraying method, an electrostatically sprayed organic substance solution is solidified by receiving solvent removal due to charge repulsion.
こうした静電噴霧法を利用した繊維製造方法として、特許文献1には、ゼインタンパク質溶液から繊維構造体を製造する方法が開示されている。 As a fiber manufacturing method using such an electrostatic spraying method, Patent Document 1 discloses a method for manufacturing a fiber structure from a zein protein solution.
また、特許文献2には、紡糸するポリマー溶液を紡糸空間へ供給するステップと、前記ポリマー溶液を供給する方向に第1の気流を供給するステップと、前記供給して形成した繊維に、前記繊維とは反対極性のイオンを照射するステップと、前記ポリマー溶液を供給する方向と交差する方向であって紡糸した繊維を回収する方向に第2の気流を供給しながら、該繊維を回収するステップと、を含むことを特徴とする繊維集合体の製造方法が開示されている。 Patent Document 2 discloses a step of supplying a spinning polymer solution to a spinning space, a step of supplying a first air stream in a direction of supplying the polymer solution, and a fiber formed by supplying the fibers. Irradiating with ions of the opposite polarity, and recovering the fibers while supplying a second air stream in a direction intersecting the direction of supplying the polymer solution and recovering the spun fibers; The manufacturing method of the fiber assembly characterized by including these is disclosed.
また、紡糸空間を1.5〜100気圧に維持することを特徴とする静電紡糸方法が特許文献3に開示されており、形成した繊維に対して繊維と反対極性のイオンを照射することを特徴とする静電紡糸方法が特許文献4に開示されている。
ここで、静電噴霧法を利用した微小繊維の紡糸方法(製造方法)においては、上記特許文献に開示されている発明のように、アースが施された金属板や回転円柱等を集積部分として使用することが一般的である。しかし、これらの方法では、紡糸された有機繊維がフェルト状に集積されているため繊維に方向性がなく、繊維の物性改善に大きく寄与する延伸処理(繊維方向に数十倍に引き延ばして結晶性を向上させる)を行うことができない。その結果、強度の低い材料しか得ることができない。 Here, in the spinning method (manufacturing method) of the microfiber using the electrostatic spraying method, as in the invention disclosed in the above-mentioned patent document, a grounded metal plate, a rotating cylinder, or the like is used as an integrated part. It is common to use. However, in these methods, since the spun organic fibers are accumulated in a felt shape, the fibers do not have directionality, and the drawing process that greatly contributes to the improvement of the physical properties of the fibers (stretching several tens of times in the fiber direction to obtain crystallinity) Cannot be improved). As a result, only materials with low strength can be obtained.
本発明は、静電噴霧法によって得られる微小繊維から紡績糸を製造するための製造方法及び製造装置の提供を目的とする。 An object of this invention is to provide the manufacturing method and manufacturing apparatus for manufacturing a spun yarn from the microfiber obtained by an electrostatic spraying method.
本発明者は、固定集積体と、アースを施した回転集積体とを用い、二つの集積体の中間位置に向けて有機重合性物質を溶解させた紡績液を静電噴霧すれば、有機繊維の大部分が回転集積体に集積されるが、一部は固定集積体にも集積するため、固定集積体と回転集積体とが形成された有機繊維によって結ばれることを見出した。さらに、その状態から固定集積体を徐々に回転集積体から離すことにより、回転集積体から引き剥がされた有機繊維が、固定集積体に近い部分から順に撚りが加えられ、1本の紡績糸として形成されていくことを見出し、本発明を完成させるに至った。 The present inventor uses a fixed assembly and a rotating assembly provided with a ground, and an organic fiber is formed by electrostatically spraying a spinning solution in which an organic polymerizable substance is dissolved toward an intermediate position between the two assemblies. It was found that most of the particles are accumulated in the rotating assembly, but some are also accumulated in the stationary assembly, so that the stationary assembly and the rotating assembly are connected by the formed organic fiber. Further, by gradually separating the fixed stack from the rotating stack from the state, the organic fibers peeled off from the rotating stack are twisted in order from the portion close to the fixed stack, and as one spun yarn As a result, the present invention has been completed.
具体的に、本発明は、
有機重合性物質を溶媒に溶解させた紡績液を調製する調製工程と、
アースを施した回転集積体と、回転集積体の回転中心軸の延長線方向に位置する固定集積体との間の空間に、回転集積体を回転させながら、前記延長線に直交する方向から前記紡績液を静電噴霧する静電噴霧工程と、
回転集積体と固定集積体との間で有機繊維が紡績糸として形成された後、回転集積体と固定集積体との距離を大きくすることによって、紡績糸を延長する延長工程と、
を有する有機紡績糸の製造方法に関する(請求項1)。
Specifically, the present invention
A preparation step of preparing a spinning solution in which an organic polymerizable substance is dissolved in a solvent;
While rotating the rotary stack in a space between the rotary stack with the ground and the fixed stack positioned in the extension line direction of the rotation center axis of the rotary stack, the direction from the direction perpendicular to the extension line An electrostatic spraying process for electrostatically spraying the spinning liquid;
After the organic fiber is formed as a spun yarn between the rotating stack and the fixed stack, the extending step of extending the spun yarn by increasing the distance between the rotating stack and the fixed stack,
The present invention relates to a method for producing an organic spun yarn having the following (claim 1).
また、本発明は、
回転集積体と、
回転集積体の回転中心軸の延長線方向に位置する固定集積体と、
前記延長線に直交する方向に位置する静電噴霧用ノズルとを備え、
回転集積体を回転させながら、有機重合性物質を有機溶媒に溶解させた紡績液を回転集積体及び固定集積体の間の空間に向けて静電噴霧し、
有機繊維が紡績糸として形成された後、回転集積体と固定集積体との距離を大きくすることによって紡績糸を延長することを特徴とする有機紡績糸の製造装置に関する(請求項5)。
The present invention also provides:
A rotating assembly;
A stationary assembly located in the direction of the extension of the rotation center axis of the rotational assembly;
An electrostatic spray nozzle located in a direction orthogonal to the extension line,
While rotating the rotating assembly, electrostatically spray a spinning solution in which an organic polymerizable substance is dissolved in an organic solvent toward the space between the rotating assembly and the stationary assembly,
The present invention relates to an organic spun yarn manufacturing apparatus, wherein an organic fiber is formed as spun yarn, and then the spun yarn is extended by increasing the distance between the rotating and fixed stacks.
回転集積体に向けて紡績液を静電噴霧すれば、固定集積体の場合と異なり、得られる有機繊維には方向性が得られる。しかし、集積体から有機繊維を1本の糸として引き剥がそうとすれば、有機繊維が切断されてしまうために、撚りを加えて紡績糸とすることは不可能である。 If the spinning solution is electrostatically sprayed toward the rotating assembly, unlike the case of the stationary assembly, the obtained organic fiber can have directionality. However, if the organic fiber is to be peeled off as a single yarn from the aggregate, the organic fiber will be cut, so that it is impossible to add a twist to make a spun yarn.
これに対して、本発明の製造方法及び製造装置では、回転集積体の回転中心軸上に固定集積体を配置する。そして、アースを施した回転集積体を回転させながら、回転集積体と固定集積体との間の空間に向けて、紡績液を静電噴霧する。すなわち、アースが施され、主として有機繊維を集積させる回転集積体に対して、斜め方向から紡績液を静電噴霧することを特徴としている。 On the other hand, in the manufacturing method and manufacturing apparatus of the present invention, the fixed stack is arranged on the rotation center axis of the rotary stack. Then, the spinning solution is electrostatically sprayed toward the space between the rotating stack and the stationary stack while rotating the rotating stack with the grounding. That is, it is characterized in that the spinning solution is electrostatically sprayed from an oblique direction with respect to a rotating assembly that is grounded and mainly accumulates organic fibers.
紡績液から形成される有機繊維は、固定集積体(回転集積体よりも小さくてよい)にも集積し、固定集積体と回転集積体とは有機繊維によって結ばれる。回転集積体には継続して有機繊維が集積されるが、固定集積体に集積した有機繊維に引っ張られるようにして1本の糸として順次引き剥がされ、固定集積体に近い位置から順番に、回転集積体の回転速度と同じ速度で撚りがかかり、紡績糸として形成されていく。 The organic fibers formed from the spinning solution are also accumulated in the fixed aggregate (which may be smaller than the rotary aggregate), and the fixed aggregate and the rotary aggregate are connected by the organic fibers. The organic fibers are continuously accumulated on the rotating accumulation body, but are sequentially peeled off as a single thread so as to be pulled by the organic fibers accumulated on the stationary accumulation body, in order from the position close to the stationary accumulation body, Twist is applied at the same speed as the rotational speed of the rotating assembly, and the spun yarn is formed.
ここで、固定集積体と回転集積体との距離を大きくすれば(例えば、固定集積体を移動する)、回転集積体から剥離した有機繊維が、回転集積体の回転に応じて撚りがかかりながら紡績糸へと形成されるため、どんどん紡績糸を長くすることができる。 Here, if the distance between the fixed stack and the rotary stack is increased (for example, the fixed stack is moved), the organic fibers peeled from the rotary stack are twisted according to the rotation of the rotary stack. Since the spun yarn is formed, the spun yarn can be made longer.
本発明の製造方法は、前記延長工程の後、延長された紡績糸を巻き取る巻取工程をさらに有することが好ましい(請求項2)。また、本発明の製造装置は、延長された前記紡績糸を巻き取る巻取手段をさらに備えることが好ましい(請求項6)。 It is preferable that the manufacturing method of the present invention further includes a winding step for winding the extended spun yarn after the extending step. Moreover, it is preferable that the manufacturing apparatus of the present invention further includes winding means for winding the extended spun yarn (Claim 6).
本発明によって得られる紡績糸は、撚りがかかっているために、静電噴霧法によって得られる通常の有機繊維と比較して、強度が高く、少し引っ張った程度では切断されない。このため、紡績糸の先端部分を固定集積体から取り外すか、又は固定集積体ごと巻取装置等にセットすれば、微細な有機繊維から構成される紡績糸を連続して製造することも可能である。 Since the spun yarn obtained by the present invention is twisted, it has higher strength than ordinary organic fibers obtained by electrostatic spraying, and is not cut to the extent that it is pulled slightly. For this reason, it is also possible to continuously produce spun yarns composed of fine organic fibers by removing the tip portion of the spun yarn from the fixed stack or setting the fixed stack together with a winding device or the like. is there.
回転集積体の形状は、円盤状、円筒状等であってもよいが、ロート状であり内周部に帯状のアースが施されていることが好ましい(請求項3,7)。 The shape of the rotating accumulation body may be a disk shape, a cylindrical shape, or the like, but is preferably a funnel shape, and a belt-like ground is preferably provided on the inner peripheral portion (claims 3 and 7).
回転集積体が円盤状や円筒状の場合には、有機繊維が集積部分である底面(円形)の外周部に溜まりやすく、有機繊維を引き付ける力が弱くなりやすいためである。一方、ロート状である場合には、内周部に帯状のアースを施すことにより、有機繊維がアース部分に優先して集積され、その後容易に剥がれやすくなる。 This is because when the rotating accumulation body is disk-shaped or cylindrical, the organic fibers tend to accumulate on the outer peripheral portion of the bottom surface (circular shape) that is the accumulation portion, and the force for attracting the organic fibers tends to be weakened. On the other hand, in the case of a funnel, by providing a belt-like ground to the inner peripheral portion, the organic fibers are preferentially accumulated over the ground portion, and then easily peeled off.
前記有機重合性物質は、コラーゲン又は乳酸/グリコール酸共重合体であることが好ましい(請求項4)。 The organic polymerizable substance is preferably collagen or a lactic acid / glycolic acid copolymer.
本発明の製造方法及び製造装置によれば、従来得られなかった微細な有機繊維から構成される紡績糸を、簡易、かつ、連続的に製造することが可能である。 According to the manufacturing method and the manufacturing apparatus of the present invention, it is possible to easily and continuously manufacture spun yarn composed of fine organic fibers that has not been obtained conventionally.
以下に、本発明の実施の形態について、適宜図面を参照しながら説明する。なお、本発明は、これらに限定されない。 Embodiments of the present invention will be described below with reference to the drawings as appropriate. The present invention is not limited to these.
本発明の有機紡績糸の製造方法の概略フローチャートを、図1に示す。 A schematic flowchart of the method for producing an organic spun yarn of the present invention is shown in FIG.
まず、ステップS1として、有機重合性物質を溶媒に溶解させて紡績液を調製する(調製工程)。有機重合性物質及び溶媒は、静電噴霧法によって繊維化できる組み合わせであれば特に限定することなく、本発明に使用することが可能であるが、溶媒は有機溶媒であるか、又は有機溶媒と水との混合溶媒であることが好ましい。 First, as step S1, an organic polymerizable substance is dissolved in a solvent to prepare a spinning solution (preparation process). The organic polymerizable substance and the solvent can be used in the present invention without any particular limitation as long as they can be fiberized by electrostatic spraying, but the solvent is an organic solvent or an organic solvent and A mixed solvent with water is preferred.
次に、ステップS2として、アースを施した回転集積体と、回転集積体の回転中心軸の延長線方向に位置する固定集積体との間の空間に、回転集積体を回転させながら、延長線に直交する方向から紡績液を静電噴霧する(静電噴霧工程)。回転集積体の形状は特に限定されないが、固定集積体に対峙する面が円形であることが、集積された有機繊維がスムーズに剥がれやすい点で好ましい。特に、開口部をもつ中空の略円錐状又はロート状であり、開口部内周に帯状のアースが施されていることが好ましい。 Next, as step S2, the extension line is rotated while rotating the rotary stack in the space between the rotary stack with the ground and the fixed stack positioned in the extension line direction of the rotation center axis of the rotary stack. The spinning solution is electrostatically sprayed from a direction orthogonal to the direction (electrostatic spraying step). The shape of the rotating assembly is not particularly limited, but it is preferable that the surface facing the stationary assembly is circular in that the accumulated organic fibers are easily peeled off. In particular, it is preferably a hollow substantially conical or funnel shape having an opening, and a belt-like ground is provided on the inner periphery of the opening.
固定集積体は、回転集積体に集積した有機繊維を順に引き剥がすための支点としての役割を果たすものであり、回転集積体と比較して小型で足りる。また、構造にも特徴はなく、例えば、針金やガラス管であってもよい。この固定集積体は、有機繊維を安定して紡績するために回転集積体の回転軸延長線上に位置することが好ましい。 The fixed assembly serves as a fulcrum for sequentially peeling the organic fibers accumulated on the rotating assembly, and is smaller than the rotating assembly. Moreover, there is no characteristic also in a structure, For example, a wire and a glass tube may be sufficient. This fixed assembly is preferably located on the rotation axis extension line of the rotary assembly in order to spin organic fibers stably.
ここで、静電噴霧工程における固定集積体、回転集積体及びノズルの位置関係を示す図を、図2に示す。紡績液5は、回転集積体2を回転させながら、回転集積体2と固定集積体1とを結ぶ直線に直交する方向から、両者の中間位置にノズル4を向けて静電噴霧する。紡績液5から形成された有機繊維6は、固定集積体1と回転集積体2の両方に集積するため、固定集積体1と回転集積体2とが有機繊維6によって結ばれる。 Here, the figure which shows the positional relationship of the fixed integration body in the electrostatic spraying process, a rotation integration body, and a nozzle is shown in FIG. The spinning solution 5 is electrostatically sprayed from the direction perpendicular to the straight line connecting the rotary stack 2 and the fixed stack 1 while the rotary stack 2 is rotated, with the nozzle 4 being directed to an intermediate position therebetween. Since the organic fibers 6 formed from the spinning solution 5 are accumulated in both the fixed accumulation body 1 and the rotation accumulation body 2, the fixed accumulation body 1 and the rotation accumulation body 2 are connected by the organic fibers 6.
その後、図3に示すように、固体集積体1を支点として、回転集積体2へと集積した有機繊維6が、回転集積体2の回転運動に伴って引き剥がされ、かつ、撚りが加えられながら紡績され、紡績糸7が形成される。 Thereafter, as shown in FIG. 3, the organic fibers 6 accumulated on the rotating accumulation body 2 with the solid accumulation body 1 as a fulcrum are peeled off along with the rotation movement of the rotating accumulation body 2 and twisted. The spun yarn 7 is formed while spinning.
この状態のままでは、紡績糸7と回転集積体2との距離がどんどん短くなり、ある程度まで紡績糸7が延長されると、それ以上は有機繊維6を規則正しく撚ることができなくなり、紡績糸が切断されてしまう。そこで、次に、ステップS3として、回転集積体2と固定集積体1との間で有機繊維6が紡績糸7として形成された後、回転集積体2と固定集積体1との距離を大きくすることによって、紡績糸7を延長する(延長工程)。 In this state, when the distance between the spun yarn 7 and the rotary assembly 2 becomes shorter and the spun yarn 7 is extended to a certain extent, the organic fiber 6 can no longer be regularly twisted, and the spun yarn Will be cut off. Then, next, as step S3, after the organic fiber 6 is formed as the spun yarn 7 between the rotary stack 2 and the fixed stack 1, the distance between the rotary stack 2 and the fixed stack 1 is increased. As a result, the spun yarn 7 is extended (extension process).
回転集積体は、静電噴霧中は回転させる必要があり、モーター等に接続されているため、固定集積体を移動させることにより、回転集積体と固定集積体との距離を大きくする方が容易である。距離を大きくすることにより、紡績糸の長さを延長することが可能となる。 Since the rotating assembly needs to be rotated during electrostatic spraying and is connected to a motor or the like, it is easier to increase the distance between the rotating assembly and the fixed assembly by moving the fixed assembly. It is. By increasing the distance, the length of the spun yarn can be extended.
最後に、ステップS4として、延長された紡績糸を巻き取ることにより、紡績糸を連続して製造することができる(巻取工程)。ある程度延長された紡績糸は、固定集積体と共に、あるいは固定集積体から取り外した後、巻取装置等にセットすることによって巻き取りが可能である。なお、ステップS4は任意の工程であるが、固定集積体自体に巻き取り機能を持たせ、ステップS3及びステップS4を同時に行ってもよい。
[実施例1]
本発明の実施例1として、回転集積体として図4に示すような円柱状の回転集積体2(底面の直径9cm、高さ2cmのガラスシャーレ)と、固定集積体として針金(アルミ製、外径1.0mm、長さ30cm)を用い、ポリカプロラクトン紡績糸を製造した。なお、ガラスシャーレの側面には幅1cmのアルミテープを円周に沿って貼り付け、これにアースを施した。また、ガラスシャーレは、高さ部分が針金の逆方向に向くように配置した。
(調製工程)
ポリカプロラクトンをジクロロメタンに溶解させ、20重量%とした。この溶液を紡績液とした。
(静電噴霧工程)
固定集積体である針金1は、回転集積体2の回転中心の延長線上に、長さ方向が回転集積体2にまっすぐ向くような向きで固定した。針金1と回転集積体2との距離は、0cmから始めて徐々に距離を取った。静電噴霧装置のノズルは、針金1の最近部と回転集積体2のアルミテープの最近部とを結ぶ直線に直交する位置であって、針金1と回転集積体2の中間位置とした(針金1と回転集積体2とを結ぶ直線からの距離10cm)。ノズルには、ステンレス製注射針(24G)を用い、押出圧0.02MPa、印加電圧15kVという条件で紡績液を静電噴霧した。静電噴霧時の位置関係は図2に示した通りであり、回転集積体は400rpmの速度で回転させた。
Finally, as step S4, the spun yarn can be continuously manufactured by winding the extended spun yarn (winding step). The spun yarn extended to a certain extent can be wound by being set on a winding device or the like together with or after being removed from the fixed stack. Step S4 is an optional process, but the fixed integrated body itself may have a winding function, and step S3 and step S4 may be performed simultaneously.
[Example 1]
As Embodiment 1 of the present invention, a cylindrical rotating stack 2 (glass petri dish with a bottom diameter of 9 cm and a height of 2 cm) as shown in FIG. 4 is used as a rotating stack, and a wire (aluminum, outside is used as a fixed stack). Polycaprolactone spun yarn was produced using a diameter of 1.0 mm and a length of 30 cm. A 1 cm wide aluminum tape was applied to the side of the glass petri dish along the circumference and grounded. Further, the glass petri dish was arranged so that the height portion was directed in the opposite direction of the wire.
(Preparation process)
Polycaprolactone was dissolved in dichloromethane to make 20% by weight. This solution was used as a spinning solution.
(Electrostatic spraying process)
The wire 1, which is a fixed accumulation body, was fixed on the extension line of the rotation center of the rotation accumulation body 2 in such a direction that the length direction was straight to the rotation accumulation body 2. The distance between the wire 1 and the rotating assembly 2 was gradually increased from 0 cm. The nozzle of the electrostatic spraying device is at a position orthogonal to the straight line connecting the nearest part of the wire 1 and the nearest part of the aluminum tape of the rotating stack 2 and is set at an intermediate position between the wire 1 and the rotating stack 2 (wire). 10cm from the straight line connecting 1 and the rotating assembly 2). A stainless steel injection needle (24G) was used as the nozzle, and the spinning solution was electrostatically sprayed under the conditions of an extrusion pressure of 0.02 MPa and an applied voltage of 15 kV. The positional relationship during electrostatic spraying is as shown in FIG. 2, and the rotating assembly was rotated at a speed of 400 rpm.
ノズルから噴霧された紡績液は、ポリカプロラクトン繊維として針金と、回転集積体の針金に対向する面とに集積され、図3に示したように、針金と回転集積体とが複数のポリカプロラクトン繊維で結ばれた。回転集積体に集積したポリカプロラクトン繊維は、針金に集積した部分を基点として引っ張られ、複数のポリカプロラクトン繊維(繊維鎖)として回転集積体から剥がれていった。このとき、複数のポリカプロラクトン繊維は、回転集積体の回転方向に撚りが加えられた状態で、1本の紡績糸として形成されていった。
(延長工程)
その後、最初の位置(図5(a)参照)から針金を回転集積体から遠ざけるように移動する(図5(b)参照)と、ポリカプロラクトン繊維の紡績糸の長さを延長することができた。針金と回転集積体との距離を30cmまで大きくした結果、紡績糸の長さは30cmまで延長可能であった。なお、紡績糸を構成するポリカプロラクトン繊維は、繊維径約6μmの均質な繊維であり、紡績糸の直径は約100μmであった。
[実施例2]
本発明の実施例2として、図6に示すようなロート状の回転集積体8を用いて、コラーゲン紡績糸を製造した。ロート状の回転集積体8はポリプロピレン製であり、開口部は直径9cmの円形で、開口部の縁から2cm空けて幅1cmのアルミテープ9を、内周面を一周するように貼り付け、これにアースを施した。
(調製工程)
可溶性コラーゲンをpH 2に調整した塩酸に溶解させた後、ろ過してコラーゲン水溶液(コラーゲン濃度:8.12重量%)を得た。次に、このコラーゲン水溶液100 mLに対して20 mLの割合でヘキサフルオロイソプロパノールを添加して、コラーゲン溶液を得た。このコラーゲン溶液を紡績液として使用した。
(静電噴霧工程)
固定集積体である針金と回転集積体8との位置関係、及び紡績液の静電噴霧条件は、すべて実施例1と同じとした。
The spinning solution sprayed from the nozzle is accumulated as a polycaprolactone fiber on a wire and a surface of the rotating stack opposite to the wire, and as shown in FIG. 3, the wire and the rotating stack are a plurality of polycaprolactone fibers. It was tied with. The polycaprolactone fibers accumulated in the rotating aggregate were pulled from the portion accumulated in the wire as a base point, and were peeled off from the rotating aggregate as a plurality of polycaprolactone fibers (fiber chains). At this time, the plurality of polycaprolactone fibers were formed as a single spun yarn in a state where twist was applied in the rotational direction of the rotating assembly.
(Extension process)
After that, the length of the spun yarn of polycaprolactone fiber can be extended by moving the wire away from the rotating assembly from the initial position (see FIG. 5 (a)) (see FIG. 5 (b)). It was. As a result of increasing the distance between the wire and the rotating assembly to 30 cm, the length of the spun yarn could be extended to 30 cm. The polycaprolactone fiber constituting the spun yarn was a homogeneous fiber having a fiber diameter of about 6 μm, and the spun yarn had a diameter of about 100 μm.
[Example 2]
As Example 2 of the present invention, a collagen spun yarn was manufactured using a funnel-shaped rotating assembly 8 as shown in FIG. The funnel-shaped rotating assembly 8 is made of polypropylene, the opening is circular with a diameter of 9 cm, and an aluminum tape 9 with a width of 1 cm is pasted from the edge of the opening so as to go around the inner peripheral surface. Was grounded.
(Preparation process)
Soluble collagen was dissolved in hydrochloric acid adjusted to pH 2 and then filtered to obtain an aqueous collagen solution (collagen concentration: 8.12% by weight). Next, 20 mL of hexafluoroisopropanol was added to 100 mL of this collagen aqueous solution to obtain a collagen solution. This collagen solution was used as a spinning solution.
(Electrostatic spraying process)
The positional relationship between the wire that is a fixed stack and the rotary stack 8 and the conditions for electrostatic spraying of the spinning solution were all the same as in Example 1.
ノズルから噴霧された紡績液は、コラーゲン繊維として針金と、回転集積体9の内周部のアルミテープ9上に集積され、針金とアルミテープ9とが複数のコラーゲン繊維で結ばれた。アルミテープ9に集積したコラーゲン繊維は、針金に集積した部分を基点として引っ張られ、複数のコラーゲン繊維(繊維鎖)としてアルミテープ9から剥がれていった。このとき、複数のコラーゲン繊維は、回転集積体8の回転方向に撚りが加えられた状態で、1本の紡績糸として形成されていった。
(延長工程及び巻取工程)
紡績糸が形成されはじめた後、実施例1と同様、針金を移動して紡績糸を延長させた。紡績糸が約10cmとなったとき、針金から紡績糸を取り外し、外径12cmのアクリル管に巻き付けた。また、アクリル管と紡績糸はテープで固定した。アクリル管の位置は、ロート状の回転集積体8の回転によって形成されるコラーゲン繊維の円錐(アルミテープ9が底面、撚りがかけられている部分が頂点)の頂点付近に調整し、その位置で紡績糸を巻き取るように回転させれば、連続的に紡績糸を製造することが可能であった。
The spinning solution sprayed from the nozzle was collected as collagen fibers on the wire and the aluminum tape 9 on the inner peripheral portion of the rotating stack 9, and the wire and the aluminum tape 9 were connected by a plurality of collagen fibers. The collagen fibers accumulated on the aluminum tape 9 were pulled from the portion accumulated on the wire as a base point, and peeled off from the aluminum tape 9 as a plurality of collagen fibers (fiber chains). At this time, the plurality of collagen fibers were formed as a single spun yarn in a state where twist was applied in the rotational direction of the rotary assembly 8.
(Extension process and winding process)
After the spun yarn started to be formed, the wire was moved to extend the spun yarn as in Example 1. When the spun yarn reached about 10 cm, the spun yarn was removed from the wire and wound around an acrylic tube with an outer diameter of 12 cm. The acrylic tube and spun yarn were fixed with tape. The position of the acrylic tube is adjusted to the vicinity of the apex of the collagen fiber cone formed by the rotation of the funnel-shaped rotating assembly 8 (the aluminum tape 9 is the bottom surface and the twisted portion is the apex). If the spun yarn was rotated so as to be wound, it was possible to continuously produce the spun yarn.
この実施例2では、ロート状の回転集積体8の内周部に貼り付けたアルミテープへとコラーゲン繊維が集積されるため、集積した繊維が剥がれやすく、アルミテープ上に堆積することがなかった。また、延長工程と巻取工程を同時に行うこともでき、紡績糸の生産性が高かった。なお、延長工程及び巻取工程の状況を撮影した写真を、図7に示す。 In Example 2, since collagen fibers are accumulated on the aluminum tape attached to the inner peripheral portion of the funnel-shaped rotating accumulation body 8, the accumulated fibers are easily peeled off and are not deposited on the aluminum tape. . Moreover, the extension process and the winding process could be performed simultaneously, and the productivity of the spun yarn was high. In addition, the photograph which image | photographed the condition of the extension process and the winding process is shown in FIG.
また、ガラス管に巻き取ったコラーゲン繊維からなる紡績糸を、図8に示す。実施例2で得られた紡績糸を構成するコラーゲン繊維は、繊維径約6μmの均質な繊維であり、紡績糸の直径は約100μmであった。
[実施例3]
乳酸/グリコール酸共重合体(平均分子量22万、乳酸:グリコール酸=75:25(モル比))をジクロロメタンに溶解させ、10重量%とした溶液を紡績液として使用し、印加電圧を15kVとすること以外は、すべて実施例2と同様にして、乳酸/グリコール酸共重合体繊維からなる紡績糸を得ることができた。
[実施例4]
本発明の実施例4として、実施例1と同じ紡績液を用いて、実施例2と同様にロート状の回転集積体8を用いて、ポリカプロラクトン紡績糸を製造した。得られたポリカプロラクトン紡績糸は、実施例1と同様の物性であった。
Further, FIG. 8 shows a spun yarn made of collagen fibers wound around a glass tube. The collagen fibers constituting the spun yarn obtained in Example 2 were homogeneous fibers having a fiber diameter of about 6 μm, and the spun yarn had a diameter of about 100 μm.
[Example 3]
Lactic acid / glycolic acid copolymer (average molecular weight 220,000, lactic acid: glycolic acid = 75: 25 (molar ratio)) was dissolved in dichloromethane and used as a spinning solution, and the applied voltage was 15 kV. A spun yarn made of lactic acid / glycolic acid copolymer fiber could be obtained in the same manner as Example 2 except for the above.
[Example 4]
As Example 4 of the present invention, a polycaprolactone spun yarn was produced using the same spinning solution as in Example 1 and using a funnel-like rotating assembly 8 as in Example 2. The obtained polycaprolactone spun yarn had the same physical properties as in Example 1.
上述したように、本発明の有機紡績糸の製造方法及び製造装置によれば、静電噴霧法によって得られた微細な有機繊維から、容易に紡績糸を製造することが可能である。また、繊維化と同時に撚りを加えることができるため、製造工程が単純であり、製造時間も短い。さらに、静電噴霧法によって繊維化しうる有機重合製物質について応用することが可能である。 As described above, according to the method and apparatus for producing an organic spun yarn of the present invention, it is possible to easily produce a spun yarn from fine organic fibers obtained by electrostatic spraying. Moreover, since twist can be added simultaneously with fiberization, a manufacturing process is simple and manufacturing time is also short. Furthermore, it can be applied to organic polymerized substances that can be fiberized by electrostatic spraying.
本発明の有機紡績糸の製造方法及び製造装置は、様々な有機重合製物質を原料として紡績糸を製造する製造方法及び製造装置として、紡績、織物、医療分野等において有用である。 The organic spun yarn production method and production apparatus of the present invention are useful in the spinning, woven fabric, medical field, etc. as a production method and production device for producing spun yarn using various organic polymerization substances as raw materials.
1:固定集積体
2:回転集積体(円柱状)
3:回転軸
4:静電噴霧用ノズル
5:紡績液
6:有機繊維
7:紡績糸
8:回転集積体(ロート状)
9:アルミテープ
1: Fixed stack 2: Rotating stack (columnar)
3: Rotating shaft 4: Nozzle for electrostatic spraying 5: Spinning liquid 6: Organic fiber 7: Spinning yarn 8: Rotating accumulation body (funnel shape)
9: Aluminum tape
Claims (7)
アースを施した回転集積体と、回転集積体の回転中心軸の延長線方向に位置する固定集積体との間の空間に、回転集積体を回転させながら、前記延長線に直交する方向から前記紡績液を静電噴霧する静電噴霧工程と、
回転集積体と固定集積体との間で有機繊維が紡績糸として形成された後、回転集積体と固定集積体との距離を大きくすることによって、紡績糸を延長する延長工程と、
を有する有機紡績糸の製造方法。 A preparation step of preparing a spinning solution in which an organic polymerizable substance is dissolved in a solvent;
While rotating the rotary stack in a space between the rotary stack with the ground and the fixed stack positioned in the extension line direction of the rotation center axis of the rotary stack, the direction from the direction perpendicular to the extension line An electrostatic spraying process for electrostatically spraying the spinning liquid;
After the organic fiber is formed as a spun yarn between the rotating stack and the fixed stack, the extending step of extending the spun yarn by increasing the distance between the rotating stack and the fixed stack,
The manufacturing method of the organic spun yarn which has this.
回転集積体の回転中心軸の延長線方向に位置する固定集積体と、
前記延長線に直交する方向に位置する静電噴霧用ノズルとを備え、
回転集積体を回転させながら、有機重合性物質を有機溶媒に溶解させた紡績液を回転集積体及び固定集積体の間の空間に向けて静電噴霧し、
有機繊維が紡績糸として形成された後、回転集積体と固定集積体との距離を大きくすることによって紡績糸を延長することを特徴とする有機紡績糸の製造装置。 A rotating assembly;
A stationary assembly located in the direction of the extension of the rotation center axis of the rotational assembly;
An electrostatic spray nozzle located in a direction orthogonal to the extension line,
While rotating the rotating assembly, electrostatically spray a spinning solution in which an organic polymerizable substance is dissolved in an organic solvent toward the space between the rotating assembly and the stationary assembly,
An apparatus for producing an organic spun yarn, wherein after the organic fiber is formed as a spun yarn, the spun yarn is extended by increasing the distance between the rotating stack and the fixed stack.
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