JP3292343B2 - Nonwoven fabric and method for producing the same - Google Patents
Nonwoven fabric and method for producing the sameInfo
- Publication number
- JP3292343B2 JP3292343B2 JP6515194A JP6515194A JP3292343B2 JP 3292343 B2 JP3292343 B2 JP 3292343B2 JP 6515194 A JP6515194 A JP 6515194A JP 6515194 A JP6515194 A JP 6515194A JP 3292343 B2 JP3292343 B2 JP 3292343B2
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- JP
- Japan
- Prior art keywords
- fiber
- section
- fibers
- nonwoven fabric
- cross
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Nonwoven Fabrics (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、三日月断面、又は異形
断面又は中空断面の繊維からなる不織布、及びその製造
方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nonwoven fabric made of fibers having a crescent cross section, irregular cross section, or hollow cross section, and a method for producing the same.
【０００２】[0002]
【従来の技術】熱可塑性樹脂を溶融紡糸し、これを高速
の気体によって微細繊維として移動している捕集板上に
吹き付けて捕集することによって不織布を製造する方法
は、一般的には、特開昭４９−１０２５８号公報、特開
昭４９−４８９２１号公報、特開昭５０−１２１５７０
号公報、特開昭５２−９８２３号公報等で知られてい
る。 しかし、これらの方法によって製造した不織布は
すべて円形中空繊維からなるものである。2. Description of the Related Art A method of producing a nonwoven fabric by melt-spinning a thermoplastic resin and spraying the molten resin onto a collecting plate moving as fine fibers by a high-speed gas to collect the non-woven fabric generally involves the following steps. JP-A-49-10258, JP-A-49-48921, JP-A-50-121570
And Japanese Patent Application Laid-Open No. 52-9823. However, the nonwoven fabrics produced by these methods are all made of circular hollow fibers.
【０００３】また、極細中空糸を製造する方法として
は、特開平２−３３３１３号公報に開示されている。す
なわち、この方法はメルトブロー法における紡糸口金の
吐出孔をＸ形、Ｙ形、く形 又はＣ形とし、この形で吐
出したポリマーの端面どうしを双方からの噴射エアによ
って融着させ、中空部を得るといったものであるが、こ
の様な方法では、噴射エア量によっては端面どうしの融
着が生じない、または中空部がつぶれてしまうといった
場合があった。A method for producing an ultrafine hollow fiber is disclosed in JP-A-2-33313. That is, in this method, the discharge hole of the spinneret in the melt blow method is X-shaped, Y-shaped, square-shaped or C-shaped, and the end faces of the polymer discharged in this form are fused by jet air from both sides, and the hollow portion is formed. However, in such a method, the end faces may not be fused or the hollow portion may be crushed depending on the amount of the injected air.
【０００４】[0004]
【発明が解決しようとする課題】このように、従来の不
織布は嵩高に乏しく、また、前記中空糸の製造法によっ
て不織布を作っても嵩高の乏しいものしか得られない。
そこで、本発明は、横断面が三日月断面などである繊維
からなる嵩高性に富み、通気性に富み、保温性にも優れ
た不織布、及びその不織布を安定して製造する方法を提
供することを課題とする。As described above, the conventional nonwoven fabric has a poor bulkiness, and even if a nonwoven fabric is produced by the above-described method for producing hollow fibers, only a nonwoven fabric having a poor bulkiness can be obtained.
Therefore, the present invention provides a nonwoven fabric which is rich in bulkiness, which is made of fibers having a cross section of a crescent cross section or the like, which is rich in air permeability, and which is excellent in heat retention, and a method for stably producing the nonwoven fabric. Make it an issue.
【０００５】[0005]
【課題を解決するための手段】本発明は、前記課題を解
決するために、次の手段をとる。すなわち、本発明は、
溶融状態の熱可塑性樹脂を複数の吐出孔を具備した紡糸
口金から紡出し、紡糸口金に隣接して設置したスリット
からホットエアを高速で噴出させて該熱可塑性樹脂の繊
維を延伸すると共に、該繊維と該ホットエアからなる繊
維流を形成せしめ、次いで該繊維流を捕集板上に吹き付
けて、該繊維からなる不織布を製造するに際し、該吐出
孔の内部に流体の通る管を具備した紡糸口金より、断面
形状が三日月断面を有する繊維を少なくとも紡糸して直
接製造された不織布であり、繊維横断面が三日月断面で
ある繊維を少なくとも１０重量％以上含むことを特徴と
し、繊維横断面が三日月断面である繊維と異形断面であ
る繊維とからなることを特徴とする不織布、繊維横断面
が三日月断面である繊維、異形断面である繊維、中空断
面である繊維からなることを特徴とする不織布である。The present invention employs the following means to solve the above-mentioned problems. That is, the present invention
Spinning molten thermoplastic resin with multiple discharge holes
Slits spun from the spinneret and installed adjacent to the spinneret
Hot air is blown out of the thermoplastic resin at high speed.
While stretching the fiber, the fiber consisting of the fiber and the hot air
A fiber stream is formed, and then the fiber stream is sprayed on a collecting plate.
In producing a nonwoven fabric made of the fibers,
From the spinneret equipped with a fluid passage tube inside the hole, the cross section
A nonwoven fabric directly manufactured by spinning at least a fiber having a crescent cross-section, characterized by containing at least 10% by weight or more of a fiber having a crescent cross-section, and a fiber having a crescent cross-section. And a fiber having a cross section of a crescent moon, a fiber having a irregular cross section, and a fiber having a hollow cross section.
【０００６】さらに、本発明は、溶融状態の熱可塑性樹
脂を複数の吐出孔を具備した紡糸口金から紡出し、紡糸
口金に隣接して設置したスリットからホットエアを高速
で噴出させて該熱可塑性樹脂の繊維を延伸すると共に、
該繊維と該ホットエアからなる繊維流を形成せしめ、次
いで該繊維流を捕集板上に吹き付けて、該繊維からなる
不織布を製造する方法において、該吐出孔の内部に流体
の通る管を具備した紡糸口金より、断面形状が三日月断
面を有する繊維を少なくとも紡糸して不織布を製造する
ことを特徴とする不織布の製造方法である。Further, the present invention provides a method of spinning a thermoplastic resin in a molten state from a spinneret having a plurality of discharge holes and jetting hot air at high speed from a slit provided adjacent to the spinneret. While stretching the fiber of
Forming a fiber stream comprising the fibers and the hot air, and then spraying the fiber stream onto a collecting plate to produce a nonwoven fabric comprising the fibers, wherein a pipe through which a fluid flows is provided inside the discharge hole. A method for producing a nonwoven fabric, comprising spinning at least a fiber having a crescent cross section from a spinneret to produce a nonwoven fabric.
【０００７】以下に、本発明を詳細に説明する。本発明
の不織布は、溶融状態の熱可塑性樹脂を複数の吐出孔を
具備した紡糸口金から紡出し、紡糸口金に隣接して設置
したスリットからホットエアを高速で噴出させて該熱可
塑性樹脂の繊維を延伸すると共に、該繊維と該ホットエ
アからなる繊維流を形成せしめ、次いで該繊維流を捕集
板上に吹き付けて、該繊維からなる不織布を製造する方
法において、該吐出孔の内部に流体の通る管を具備した
紡糸口金より、断面形状が三日月断面を有する繊維を少
なくとも紡糸して直接製造された不織布であり、繊維横
断面が三日月断面である繊維と異形断面である繊維とか
らなり、繊維横断面が三日月断面である繊維を少なくと
も１０重量％以上含んでなるものである。かかる三日月
断面の繊維を１０重量％以上含むことにより、嵩高性、
風合い、保温性、柔軟性に優れたものが得られる。Hereinafter, the present invention will be described in detail. The nonwoven fabric of the present invention has a plurality of discharge holes formed by melting a thermoplastic resin.
Spins from the spinneret provided and is installed adjacent to the spinneret
Hot air is spouted at high speed from the slit
The fiber of the plastic resin is drawn, and the fiber and the hot air are drawn.
To form a fiber stream, and then collect the fiber stream
Spraying onto a board to produce a nonwoven fabric made of the fibers
Method, comprising a pipe through which a fluid passes inside the discharge hole.
From the spinneret, reduce the number of fibers with a crescent cross section.
At least 10% by weight or more of a fiber having a crescent cross section and a fiber having a crescent cross section, and comprising at least 10% by weight of a fiber having a crescent cross section. Things. By containing 10% by weight or more of such a fiber having a crescent cross section, bulkiness,
Good texture, heat retention and flexibility are obtained.
【０００８】さらに、本発明の不織布は、溶融状態の熱
可塑性樹脂を複数の吐出孔を具備した紡糸口金から紡出
し、紡糸口金に隣接して設置したスリットからホットエ
アを高速で噴出させて該熱可塑性樹脂の繊維を延伸する
と共に、該繊維と該ホットエアからなる繊維流を形成せ
しめ、次いで該繊維流を捕集板上に吹き付けて、該繊維
からなる不織布を製造する方法において、該吐出孔の内
部に流体の通る管を具備した紡糸口金より、断面形状が
三日月断面を有する繊維を少なくとも紡糸して直接製造
された不織布であり、溶融紡糸して直接製造された不織
布であり、三日月断面の繊維を１０重量％以上含み、さ
らに該三日月断面を除く異形断面及び中空断面の繊維か
らなるものである。このような構成をとることにより、
より保温性に優れ、柔軟性、風合いに優れた不織布が得
られる。図１に、三日月断面(a)、異形断面(b) 、中空
断面(c) の一例を示す。Furthermore, the nonwoven fabric of the present invention, a molten hot
Spins plastic resin from spinneret with multiple discharge holes
From the slit installed adjacent to the spinneret.
A high-speed jet to stretch the thermoplastic resin fibers
At the same time, forming a fiber stream comprising the fibers and the hot air.
Squeezing and then spraying the fiber stream onto a collecting plate
In the method for producing a nonwoven fabric comprising:
From the spinneret equipped with a tube through which the fluid passes, the cross-sectional shape is
A nonwoven fabric directly manufactured by spinning at least a fiber having a crescent cross-section; a nonwoven fabric directly manufactured by melt-spinning; containing at least 10% by weight of a crescent cross-section fiber; It is made of a fiber having a hollow cross section. By taking such a configuration,
A nonwoven fabric having more excellent heat retention, flexibility and texture can be obtained. FIG. 1 shows an example of a crescent section (a), an irregular section (b), and a hollow section (c).
【０００９】なお、異形断面の繊維は５重量％以上、中
空断面の繊維は７５重量％以下が好ましい。また、三日
月断面の繊維は１０重量％〜８５重量％、異形断面の繊
維は９０重量％〜１５重量％の組合せの不織布が好まし
い。また、三日月断面、異形断面、中空断面の繊維は夫
々１０〜８５重量％、１５〜５重量％、７５〜１０重量
％が好ましい。It is preferable that the fiber having an irregular cross section has a weight of 5% by weight or more and the fiber having a hollow cross section has a weight of 75% by weight or less. Further, a nonwoven fabric of a combination of 10% to 85% by weight of the fiber having a crescent cross section and 90% to 15% by weight of the fiber having an irregular cross section is preferable. The fibers having a crescent cross section, a modified cross section, and a hollow cross section are preferably 10 to 85% by weight, 15 to 5% by weight, and 75 to 10% by weight, respectively.
【００１０】次に、本発明の製造方法について説明す
る。図２は本発明の製造方法に用いる製造装置の概略図
であり、図３は図２の III-III線に沿って矢印方向に見
た断面図であり、図４は吐出孔部分の拡大図である。導
入管１よりダイヘッド２へ流入したポリマーは整流溝１
０によって拡幅した後分配溝１１、１２によって２方向
に分岐する。分岐したポリマーは、中板２３に沿ってポ
リマースリット２６、２７へ流れ込み、吐出孔２８で合
流し吐出される。同時に、整流管５、６から流入した流
体は、圧力室２５から均一に、吐出孔２８に挿入された
細管２４から流出させる。その結果、吐出孔２８からの
紡出糸は中心に空間のあるパイプ状の中空糸となって、
エア管路３、４からの高速エアによって、延伸され繊維
流７を形成する。Next, the manufacturing method of the present invention will be described. 2 is a schematic view of a manufacturing apparatus used in the manufacturing method of the present invention, FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2, and FIG. 4 is an enlarged view of a discharge hole portion. It is. The polymer flowing into the die head 2 from the introduction pipe 1
After the width is widened by 0, the light is branched in two directions by the distribution grooves 11 and 12. The branched polymer flows into the polymer slits 26 and 27 along the middle plate 23, and is merged and discharged at the discharge hole 28. At the same time, the fluid that has flowed in from the flow straightening pipes 5 and 6 flows out uniformly from the pressure chamber 25 through the thin pipe 24 inserted into the discharge hole 28. As a result, the spun yarn from the discharge hole 28 becomes a pipe-shaped hollow fiber having a space in the center,
The fiber stream 7 is drawn by the high-speed air from the air lines 3 and 4.
【００１１】安定して中空糸を得るためには、細管２４
からの流量を、細管外形×ポリマーの吐出速度±１０％
以下に制御し、かつ、温度をポリマー温度±１０％以下
に制御し、かつ、温度をポリマー温度±５％以下に制御
した流体を用いることが好ましく、特にエアを用いるこ
とが好ましい。In order to stably obtain a hollow fiber, a thin tube 24 is required.
Flow rate from the capillary, x 10% of polymer discharge speed
It is preferable to use a fluid whose temperature is controlled to be less than or equal to ± 10% of the polymer temperature and the temperature is controlled to be less than or equal to ± 5% of the polymer temperature. In particular, it is preferable to use air.
【００１２】また、吐出孔２８と細管２４の断面積の比
（吐出孔／細管）は、大きすぎると紡出糸が中実糸とな
り、逆に、小さすぎると中空糸の肉厚が薄くなり、糸切
れ等の原因となるため、１／５〜１０／１が好ましく、
さらに２／１〜５／１が好ましい。ここで、吐出孔とは
ポリマーの通過する通路をいう。On the other hand, if the ratio of the cross-sectional area of the discharge hole 28 to the thin tube 24 (discharge hole / thin tube) is too large, the spun yarn becomes a solid yarn, and if it is too small, the thickness of the hollow fiber becomes thin. , It is preferably 1/5 to 10/1 to cause thread breakage.
Further, 2/1 to 5/1 is preferable. Here, the discharge hole means a passage through which the polymer passes.
【００１３】また、細管２４を吐出孔２８の中心からず
らし、紡出糸に薄肉部を設け、吐出延伸する過程で薄肉
部が破れることによって、紡出糸の断面形状を三日月形
とすることができる。加えて、導入管１からのポリマー
とは他成分のポリマーを整流管５、６へ流入することに
よって、２成分シースコア型の紡出糸を得ることもでき
る。Further, the cross section of the spun yarn may be crescent-shaped by displacing the thin tube 24 from the center of the discharge hole 28, providing a thin portion in the spun yarn, and breaking the thin portion in the process of discharging and stretching. it can. In addition, by flowing a polymer other than the polymer from the introduction tube 1 into the flow straightening tubes 5 and 6, a two-component spice core type spun yarn can be obtained.
【００１４】[0014]
実施例１ 図２において、ポリプロピレンのポリマーを導入管１に
流入し、吐出孔２８の孔径を０．８（ｍｍ）、孔数５０
０ホール、細管２４に外形０．４１（ｍｍ）、内径０．
１９（ｍｍ）のステンレスチューブを用い、紡糸口金温
度２８０℃、単孔吐出量０．３（ｇ／ｍｉｎ）、細管の
エア流量０．１２（ｃｍ3 ／ｍｉｎ）、紡糸口金から捕
集板までの距離２００（ｍｍ）で紡糸したところ、中空
糸が７０％、三日月形の断面をもつ繊維２０％、異形断
面をもつ繊維１０％のメルトブロー不織布が得られた。
その性能を表１に示す。Example 1 In FIG. 2, a polymer of polypropylene was introduced into the introduction pipe 1, the diameter of the discharge hole 28 was 0.8 (mm), and the number of holes was 50.
0 hole, outer diameter 0.41 (mm) in capillary 24, inner diameter 0.
Using a stainless steel tube of 19 (mm), the spinneret temperature is 280 ° C, the single hole discharge amount is 0.3 (g / min), the air flow rate of the thin tube is 0.12 (cm3 / min), and the distance from the spinneret to the collecting plate is When spun at a distance of 200 (mm), a melt-blown nonwoven fabric comprising 70% hollow fibers, 20% fibers having a crescent cross section, and 10% fibers having an irregular cross section was obtained.
The performance is shown in Table 1.
【００１５】実施例２ また、前記紡糸口金において、細管２４を吐出孔２８の
中心から０．１（ｍｍ）ずらし、同様な紡糸を行ったと
ころ、三日月形の断面をもつ繊維８０％、異形断面をも
つ繊維２０％のメルトブロー不織布が得られた。性能を
表１に示す。従来例も合わせて表１に示した。Example 2 In the spinneret, when the thin tube 24 was shifted from the center of the discharge hole 28 by 0.1 (mm) and the same spinning was performed, 80% of the fiber had a crescent-shaped cross section, And a melt-blown nonwoven fabric of 20% of fibers having The performance is shown in Table 1. Table 1 also shows a conventional example.
【００１６】[0016]
【表１】 [Table 1]
【００１７】なお、厚み（ｍｍ）はマイクロメータによ
り測定した。通気抵抗は、φ５０ｍｍの不織布（目付５
０ｇ／ｍ2 ）に５０ｌ／ｍｉｎのエアを通すことにより
測定した。また、熱伝導率（ｗ／ｍｋ）は２００ｍｍ角
の不織布を２０枚重ね合わし、ＪＩＳ−Ａ−１４１２−
１９８９の５．１平板直接法により試験体一枚方式の測
定装置で高温面温度５０℃、低温面温度２０℃で測定し
た。また、柔軟性、風合いについては、非常に良いを
◎、良いを○、硬いを△、非常に硬いを×とし、２０人
の評価の多数意見をとったものである。The thickness (mm) was measured with a micrometer. The airflow resistance of the non-woven fabric of 50 mm
(0 g / m 2 ) by passing 50 l / min of air. In addition, thermal conductivity (w / mk) of 20 non-woven fabrics of 200 mm square was superposed on each other, and the JIS-A-1412-
The measurement was performed at a high-temperature surface temperature of 50 ° C. and a low-temperature surface temperature of 20 ° C. by a single-specimen measuring apparatus according to the 1989 5.1 flat plate direct method. Regarding flexibility and texture, ◎ indicates very good, を indicates good, △ indicates hard, and × indicates very hard.
【００１８】表１で、実施例１のものは、中空糸の中空
部、異形糸、三日月糸の外形によってエア溜まりが形成
されるため熱伝導率が低く、したがって保温性が良かっ
た。実施例２のものは、実施例１のものに対して、中空
糸がないため熱伝導率はやや大きく保温性は若干落ちる
ものの三日月、異形断面が多いために通気抵抗が小さか
った。従来例のものは、円形の中実糸１００％であるた
めに通気抵抗が大きく、保温性も悪かった。In Table 1, in Example 1, the air portion was formed by the hollow portion of the hollow fiber, the irregularly shaped yarn, and the outer shape of the crescent yarn, so that the heat conductivity was low and the heat retention was good. In the case of Example 2, the heat conductivity was slightly higher due to the absence of the hollow fiber and the heat retention was slightly lower than that in Example 1, but the airflow resistance was low due to the large number of crescents and irregular cross sections. The conventional example had a large airflow resistance and poor heat retention because it was a circular solid yarn of 100%.
【００１９】[0019]
【発明の効果】本発明のメルトブローン不織布は、繊維
が少なくとも三日月形の断面形状であるため、嵩高で風
合いが良好であり、また多くのエア溜まりを含むため、
非常に保温性が良く、メルトブローン不織布の機能を極
めて向上するものである。The melt-blown nonwoven fabric of the present invention has a bulky and good texture because the fibers have at least a crescent-shaped cross section, and contains many air pockets.
It has a very good heat retaining property and extremely improves the function of the melt blown nonwoven fabric.
【図１】本発明の不織布構成繊維の断面図である。FIG. 1 is a cross-sectional view of a nonwoven fabric constituting fiber of the present invention.
【図２】本発明にかかる製造装置の１例を示した概略図
である。FIG. 2 is a schematic view showing one example of a manufacturing apparatus according to the present invention.
【図３】本発明にかかる紡糸口金の１例を示した概略断
面図である。FIG. 3 is a schematic sectional view showing an example of a spinneret according to the present invention.
【図４】本発明にかかる紡糸口金先端の拡大図である。FIG. 4 is an enlarged view of a tip of a spinneret according to the present invention.
１ 導入管 １５ エアリップ ２ ダイヘッド １６ エアリップ ３ エア管路 １７ 締め付けボルト ４ エア管路 １８ 締め付けボルト ５ 整流管 １９ 締め付けボルト ６ 整流管 ２０ 締め付けボルト ７ 繊維流 ２１ 締め付けボルト ８ 流量調節計 ２２ 締め付けボルト ９ 流量調節計 ２３ 中板 １０ 整流溝 ２４ 細管 １１ 分配溝 ２５ 圧力室 １２ 分配溝 ２６ ポリマースリ
ット １３ 分配ブロック ２７ ポリマースリ
ット １４ 紡糸口金 ２８ 吐出孔DESCRIPTION OF SYMBOLS 1 Introduction pipe 15 Air lip 2 Die head 16 Air lip 3 Air pipe 17 Tightening bolt 4 Air pipe 18 Tightening bolt 5 Straightening pipe 19 Tightening bolt 6 Straightening pipe 20 Tightening bolt 7 Fiber stream 21 Tightening bolt 8 Flow controller 22 Tightening bolt 9 Flow rate Controller 23 Middle plate 10 Rectifying groove 24 Narrow tube 11 Distribution groove 25 Pressure chamber 12 Distribution groove 26 Polymer slit 13 Distribution block 27 Polymer slit 14 Spinneret 28 Discharge hole
フロントページの続き (56)参考文献 特開 平１−201567（ＪＰ，Ａ) 特開 平１−201566（ＪＰ，Ａ) 特開 平１−148862（ＪＰ，Ａ) 特開 昭63−182462（ＪＰ，Ａ) 特開 昭57−61717（ＪＰ，Ａ) 特開 平５−279948（ＪＰ，Ａ) 特開 平５−31137（ＪＰ，Ａ) 特開 平４−253857（ＪＰ，Ａ) 特開 平４−174753（ＪＰ，Ａ) 特開 平４−146226（ＪＰ，Ａ) 特開 平４−41762（ＪＰ，Ａ) 特開 平３−287848（ＪＰ，Ａ) 特開 平３−249213（ＪＰ，Ａ) 特開 平３−241055（ＪＰ，Ａ) 特開 平１−292117（ＪＰ，Ａ) 特開 平１−260051（ＪＰ，Ａ) 特開 平１−213452（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) D04H 1/00 - 18/00 D01D 1/00 - 13/02 Continuation of front page (56) References JP-A-1-201567 (JP, A) JP-A-1-201566 (JP, A) JP-A-1-148862 (JP, A) JP-A-63-182462 (JP) JP-A-57-61717 (JP, A) JP-A-5-279948 (JP, A) JP-A-5-31137 (JP, A) JP-A-4-253857 (JP, A) JP-A-4-174753 (JP, A) JP-A-4-146226 (JP, A) JP-A-4-41762 (JP, A) JP-A-3-287848 (JP, A) JP-A-3-249213 (JP, A A) JP-A-3-241055 (JP, A) JP-A-1-292117 (JP, A) JP-A-1-260051 (JP, A) JP-A-1-213452 (JP, A) (58) Survey Field (Int.Cl. 7 , DB name) D04H 1/00-18/00 D01D 1/00-13/02
Claims (3)
を具備した紡糸口金から紡出し、紡糸口金に隣接して設
置したスリットからホットエアを高速で噴出させて該熱
可塑性樹脂の繊維を延伸すると共に、該繊維と該ホット
エアからなる繊維流を形成せしめ、次いで該繊維流を捕
集板上に吹き付けて、該繊維からなる不織布を製造する
に際し、該吐出孔の内部に流体の通る管を具備した紡糸
口金より、断面形状が三日月断面を有する繊維を少なく
とも紡糸して直接製造された不織布であり、繊維横断面
が三日月断面である繊維と異形断面である繊維からな
り、かつ前記三日月断面である繊維を少なくとも１０重
量％以上含むことを特徴とする不織布。A plurality of discharge holes for a thermoplastic resin in a molten state.
Spinning from a spinneret equipped with
Hot air is spouted at high speed from the slit
While stretching the fiber of the plastic resin, the fiber and the hot
A fiber stream composed of air is formed, and then the fiber stream is captured.
Spraying on a collecting plate to produce a nonwoven fabric made of the fibers
In this case, the spinning is provided with a pipe through which a fluid passes inside the discharge hole.
Fewer fibers with a crescent cross section than the base
Both a nonwoven fabric produced directly by spinning, nonwoven fiber cross-section made fibers are fibers and modified cross-section is crescent cross section, and wherein said containing fibers are crescent sectional least 10 wt% or more .
を具備した紡糸口金から紡出し、紡糸口金に隣接して設
置したスリットからホットエアを高速で噴出させて該熱
可塑性樹脂の繊維を延伸すると共に、該繊維と該ホット
エアからなる繊維流を形成せしめ、次いで該繊維流を捕
集板上に吹き付けて、該繊維からなる不織布を製造する
に際し、該吐出孔の内部に流体の通る管を具備した紡糸
口金より、断面形状が三日月断面を有する繊維を少なく
とも紡糸して直接製造された不織布であり、繊維横断面
が三日月断面である繊維、異形断面である繊維、中空断
面である繊維からなり、かつ三日月断面である繊維を少
なくとも１０重量％以上含むことを特徴とする不織布。2. A plurality of discharge holes for a thermoplastic resin in a molten state.
Spinning from a spinneret equipped with
Hot air is spouted at high speed from the slit
While stretching the fiber of the plastic resin, the fiber and the hot
A fiber stream composed of air is formed, and then the fiber stream is captured.
Spraying on a collecting plate to produce a nonwoven fabric made of the fibers
In this case, the spinning is provided with a pipe through which a fluid passes inside the discharge hole.
Fewer fibers with a crescent cross section than the base
Non-woven fabric directly manufactured by spinning with both fibers having a crescent cross section, a fiber having a modified cross section, a fiber having a hollow cross section, and containing at least 10% by weight or more of a fiber having a crescent cross section. Nonwoven fabric characterized by the following.
を具備した紡糸口金から紡出し、紡糸口金に隣接して設
置したスリットからホットエアを高速で噴出させて該熱
可塑性樹脂の繊維を延伸すると共に、該繊維と該ホット
エアからなる繊維流を形成せしめ、次いで該繊維流を捕
集板上に吹き付けて、該繊維からなる不織布を製造する
方法において、該吐出孔の内部に流体の通る管を具備し
た紡糸口金より、断面形状が三日月断面を有する繊維を
少なくとも紡糸して不織布を製造することを特徴とする
不織布の製造方法。3. A thermoplastic resin in a molten state is spun from a spinneret having a plurality of discharge holes, and hot air is spouted at a high speed from a slit provided adjacent to the spinneret to stretch the thermoplastic resin fibers. And forming a fiber stream comprising the fibers and the hot air, and then spraying the fiber stream onto a collecting plate to produce a nonwoven fabric comprising the fibers. A method for producing a nonwoven fabric, comprising producing a nonwoven fabric by spinning at least a fiber having a crescent cross-section from a spinneret provided with:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6515194A JP3292343B2 (en) | 1994-04-01 | 1994-04-01 | Nonwoven fabric and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6515194A JP3292343B2 (en) | 1994-04-01 | 1994-04-01 | Nonwoven fabric and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07279028A JPH07279028A (en) | 1995-10-24 |
| JP3292343B2 true JP3292343B2 (en) | 2002-06-17 |
Family
ID=13278600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6515194A Expired - Fee Related JP3292343B2 (en) | 1994-04-01 | 1994-04-01 | Nonwoven fabric and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3292343B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6127942B2 (en) * | 2013-12-02 | 2017-05-17 | トヨタ紡織株式会社 | Melt blow die and nonwoven fabric manufacturing equipment |
| JP6904260B2 (en) * | 2016-11-17 | 2021-07-14 | 東レ株式会社 | Spunbonded non-woven fabric and its manufacturing method |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5761717A (en) * | 1980-09-25 | 1982-04-14 | Toyobo Co Ltd | Polyester fiber for padding |
| JPH0765263B2 (en) * | 1987-01-24 | 1995-07-12 | 東洋紡績株式会社 | Open nonwoven fabric |
| JPH01148862A (en) * | 1987-12-04 | 1989-06-12 | Asahi Chem Ind Co Ltd | Bulky spun bond nonwoven fabric made of crystalline thermoplastic resin |
| JPH01201567A (en) * | 1988-01-30 | 1989-08-14 | Asahi Chem Ind Co Ltd | Production of bulky spun-bond nonwoven fabric |
| JPH01201566A (en) * | 1988-01-30 | 1989-08-14 | Asahi Chem Ind Co Ltd | Bulky spun-bond nonwoven fabric |
| JP2579660B2 (en) * | 1988-02-16 | 1997-02-05 | チッソ株式会社 | Method for producing bulky nonwoven fabric |
| JPH01260051A (en) * | 1988-04-01 | 1989-10-17 | Mitsubishi Rayon Co Ltd | Fiber web |
| JPH01292117A (en) * | 1988-05-12 | 1989-11-24 | Mitsubishi Rayon Co Ltd | Heat-weldable hollow core-sheath fiber and production thereof |
| JP2816865B2 (en) * | 1989-07-25 | 1998-10-27 | 市川毛織株式会社 | Needle felt for polishing |
| JPH03241055A (en) * | 1990-02-20 | 1991-10-28 | Toyobo Co Ltd | Bulky filament non-woven fabric |
| JPH03249213A (en) * | 1990-02-21 | 1991-11-07 | Nippon Ester Co Ltd | Heat-weldable hollow conjugate fiber |
| JPH03287848A (en) * | 1990-04-03 | 1991-12-18 | Toyobo Co Ltd | Bulky nonwoven fabric |
| JP2956134B2 (en) * | 1990-06-07 | 1999-10-04 | 東洋紡績株式会社 | Bulk nonwoven fabric and method for producing the same |
| JPH04146226A (en) * | 1990-10-05 | 1992-05-20 | Toray Ind Inc | Raw staple for padding with high bulkiness |
| JPH04174753A (en) * | 1990-11-02 | 1992-06-22 | Teijin Ltd | Nonwoven filament cloth |
| JPH0531137A (en) * | 1991-02-02 | 1993-02-09 | Oji Paper Co Ltd | Bulky non-woven fabric being suitable for surface material of hygienic material |
| JPH04253857A (en) * | 1991-02-02 | 1992-09-09 | Oji Paper Co Ltd | Unwoven cloth used as surface material of sanitary material |
| JPH05279948A (en) * | 1992-03-30 | 1993-10-26 | Kuraray Co Ltd | Production of melt blown fiber nonwoven fabric with modified cross section |
-
1994
- 1994-04-01 JP JP6515194A patent/JP3292343B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07279028A (en) | 1995-10-24 |
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