JPH083853A - Production of nonwoven fabric and apparatus therefor - Google Patents
Production of nonwoven fabric and apparatus thereforInfo
- Publication number
- JPH083853A JPH083853A JP4670695A JP4670695A JPH083853A JP H083853 A JPH083853 A JP H083853A JP 4670695 A JP4670695 A JP 4670695A JP 4670695 A JP4670695 A JP 4670695A JP H083853 A JPH083853 A JP H083853A
- Authority
- JP
- Japan
- Prior art keywords
- cooling
- filament
- filaments
- spinneret
- cooling air
- 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.)
- Granted
Links
Landscapes
- Nonwoven Fabrics (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、医療、衛生資材、土木
資材、産業資材、包装資材などの各種用途に用いられる
不織布、ことにスパンボンド不織布の製造方法及び装置
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nonwoven fabric used for various purposes such as medical, hygiene materials, civil engineering materials, industrial materials and packaging materials, and more particularly to a method and apparatus for producing spunbonded nonwoven fabric.
【０００２】[0002]
【従来技術】スパンボンド不織布の製造方法には、紡糸
したフィラメントを丸型エアガン或いはスリットエアガ
ンに通して延伸したのち、セパレータやオシレータによ
りメッシュベルト上に散布する開放型のものと、特開昭
５７−３５０５３号、特開昭６０−１５５７６５号等に
示されるように、紡糸したフィラメントを冷却室に導入
した冷却風により冷却したのち、ノズルを通して引出
し、メッシュベルト上に散布する密閉型タイプのものと
がある。後者の密閉型タイプのものにおいては、簡便な
プロセスで良好なフィラメントが得られ、均一性に優れ
たウェブを得ることができるが、冷却室に導入した冷却
風で延伸を行い、冷却風と延伸風を共用しているため、
冷却と延伸を独立して行うことができない。独国特許第
４０１４９８９号には、密閉系タイプのこうした問題を
解消するため、冷却風と延伸風を分離したものが開示さ
れている。2. Description of the Related Art As a method for producing a spunbonded non-woven fabric, an open type one in which a spun filament is drawn through a round type air gun or a slit air gun and then spread on a mesh belt by a separator or an oscillator, and Japanese Patent Laid-Open No. 57-57570 is used. -35053, JP-A-60-155765, etc., the spun filament is cooled by cooling air introduced into a cooling chamber, then drawn out through a nozzle and sprayed on a mesh belt. There is. In the latter closed type, a good filament can be obtained by a simple process and a web with excellent uniformity can be obtained, but stretching is performed with the cooling air introduced into the cooling chamber, and the stretching is performed with the cooling air. Because it shares the wind,
Cooling and stretching cannot be done independently. German Patent No. 4014989 discloses a system in which cooling air and drawing air are separated in order to solve these problems of the closed system type.
【０００３】[0003]
【発明が解決しようとする課題】密閉型タイプのものに
おいて、冷却風と延伸風を分離した上述する従来の方法
では、溶融したフィラメントの結晶化開始前に分子配向
を進めるために必要な徐冷する区間を有しないので、繊
度の小さなフィラメントを安定的に供給することが困難
である。本発明は、冷却室を用いたスパンボンド不織布
の製造方法及び装置において、十分な強度を有する細デ
ニールのフィラメントよりなる不織布を安定的に製造で
きるようにすることを目的とする。In the closed type, the conventional method described above in which the cooling air and the drawing air are separated, the gradual cooling required to advance the molecular orientation before the start of crystallization of the molten filament is carried out. It is difficult to stably supply a filament having a small fineness because it does not have a section. An object of the present invention is to make it possible to stably produce a nonwoven fabric composed of filaments of fine denier having sufficient strength in a method and an apparatus for producing a spunbonded nonwoven fabric using a cooling chamber.
【０００４】[0004]
【課題の解決手段】本発明の不織布の製造方法は、紡糸
口から紡糸された多数の連続フィラメントを冷却室に導
入した冷却風により冷却したのち、移動捕集面上に堆積
させるスパンボンド不織布の製造方法において、紡糸口
金から冷却室に達するまでの間でフィラメントを自然冷
却して徐冷する徐冷過程と、冷却室においてフィラメン
トに冷却風を流して強制冷却する過程と、冷却されたフ
ィラメントをノズルから導入した延伸風で延伸する過程
と、延伸したフィラメントを移動捕集面上に堆積させる
過程とよりなることを特徴とする。A method for producing a non-woven fabric according to the present invention is a spun-bonded non-woven fabric in which a large number of continuous filaments spun from a spinneret are cooled by cooling air introduced into a cooling chamber and then deposited on a moving collection surface. In the manufacturing method, a slow cooling process in which the filament is naturally cooled and gradually cooled until it reaches the cooling chamber from the spinneret, a process in which cooling air is blown to the filament in the cooling chamber to forcibly cool it, and the cooled filament is It is characterized in that it comprises a process of drawing with a drawing wind introduced from a nozzle and a process of depositing the drawn filament on the moving and collecting surface.
【０００５】本方法において、冷却風はフィラメントに
対し、対向する二方向から流されることが好ましく、ま
た冷却前の徐冷過程は紡糸口金からの距離が５０〜２０
０mmの範囲で行うのが望ましい。５０mm未満だとフィラ
メントが急冷されるために糸切れが発生し易くなり、ま
た２００mmを越えると、糸揺れが発生するようになり、
糸揺れが激しくなると、紡糸できなくなるからである。
冷却風は０．１〜２．０ｍ／秒程度で冷却室に導入さ
れ、好ましくは上述するように、フィラメントに対し、
対向する二方向から流される。フィラメントに両側より
当てられることによりフィラメトの振動がなく、紡糸が
安定して行えるようになる。導入に際してはまた、好ま
しくは温度や湿度、更にはダンパー等により風量が調整
され、より好ましくは冷却風の導入部に角度が調整可能
なルーパが設けられ、冷却風の導入角度が制御できるよ
うにされる。In the present method, it is preferable that the cooling air is applied to the filament in two opposite directions, and in the slow cooling process before cooling, the distance from the spinneret is 50 to 20.
It is desirable to do it in the range of 0 mm. If it is less than 50 mm, the filament will be rapidly cooled and thread breakage will easily occur. If it exceeds 200 mm, thread sway will occur.
This is because spinning becomes impossible when the yarn shake becomes severe.
Cooling air is introduced into the cooling chamber at a rate of 0.1 to 2.0 m / sec, and preferably, as described above, for the filament,
It is made to flow from two opposite directions. Since the filament is applied from both sides, there is no vibration of filament and stable spinning can be performed. At the time of introduction, the air volume is preferably adjusted by temperature and humidity, and further by a damper or the like, and more preferably, a looper having an adjustable angle is provided at the introduction part of the cooling air so that the cooling air introduction angle can be controlled. To be done.
【０００６】本発明の装置においては、更に補集面上に
補集されたフィラメントを交絡させる手段を付加するこ
とができる。この場合の交絡過程は、ニードルパンチ
機、熱エンボス、ウォータージェットのうち、少なくと
もいづれか一つによっておこなわれる。本方法を実施す
るための装置は、多数のフィラメントを連続して紡糸す
る紡糸口金と、冷却風の導入口と排出口を備え、紡糸さ
れたフィラメントを冷却する冷却室と、紡糸口金と冷却
室を接続し、紡糸口金より紡出されたフィラメントを徐
冷する喉部と、延伸風の導入口を有し、冷却室で冷却さ
れたフィラメントを延伸するノズルと、ノズルより吹出
されたフィラメントを捕集する移動捕集面とよりなるこ
とを特徴とする。In the device of the present invention, it is possible to add a means for intertwining the collected filaments on the collecting surface. The entanglement process in this case is performed by at least one of a needle punch machine, heat embossing, and water jet. The apparatus for carrying out the present method comprises a spinneret for continuously spinning a large number of filaments, a cooling chamber for introducing cooling air, and a cooling chamber for cooling the spun filament, a spinneret and a cooling chamber. , A nozzle for gradually cooling the filament spun from the spinneret, a nozzle for drawing the filament cooled in the cooling chamber and an inlet for drawing air, and a filament blown out from the nozzle. It is characterized by comprising a moving collection surface for collecting.
【０００７】図１は、本装置の一例を示すもので、紡糸
口金１に喉部２を介して接続される冷却室３は、上部に
冷却風の導入口３ａを両側に、下部に排出口３ｂを有
し、導入口３ａには外部操作によって角度が調整可能な
ルーパ４とダンパー６とを備え、ブロワー５より供給さ
れ、ダンパー６により風量を調整された冷却風がルーパ
４において導入角度を調整され、フィルター７を経てフ
ィラメント８に吹付けられるようにしてあり、フィラメ
ント８を冷却した冷却風は、排出口３ｂを出たのち、切
換弁９を経て循環若しくは排出される。なお、ブロワー
５より排出される冷却風は、クーラ１０等の温度調整手
段により温度を、更には温度調整手段やそれに付属する
加湿器により湿度を調整されるようにしてある。FIG. 1 shows an example of this apparatus. A cooling chamber 3 connected to a spinneret 1 via a throat 2 has cooling air inlets 3a on both sides and an outlet on the lower side. 3b, the inlet 3a is provided with a looper 4 and a damper 6 whose angle can be adjusted by an external operation, and the cooling air supplied from the blower 5 and having the air volume adjusted by the damper 6 changes the introduction angle at the looper 4. The adjusted air is blown to the filament 8 through the filter 7, and the cooling air that has cooled the filament 8 exits the outlet 3b and is then circulated or exhausted through the switching valve 9. The temperature of the cooling air discharged from the blower 5 is adjusted by the temperature adjusting means such as the cooler 10, and the humidity is adjusted by the temperature adjusting means and the humidifier attached thereto.
【０００８】冷却室３において冷却されたフィラメント
８は、次にノズル１１から導入された延伸風で延伸さ
れ、捕集面１２上に散布されたのち、図示しないニード
ルパンチ機等の交絡手段により交絡される。本装置によ
れば、紡糸口金１より紡出されたフィラメント８は、喉
部２で徐冷されたのち、冷却室３において、導入口３ａ
より温度、湿度、風量、風向きを調整された冷却風によ
り冷却される。喉部２を設けることにより冷却が緩やか
に行われ、これにより溶融樹脂の粘度が低く保たれ、低
圧のプロセスエアを用いても、フィラメント繊度を小さ
くすることができる。The filament 8 cooled in the cooling chamber 3 is then drawn by a drawing wind introduced from a nozzle 11 and scattered on the collecting surface 12, and then entangled by a entanglement means such as a needle punch machine (not shown). To be done. According to this device, the filament 8 spun from the spinneret 1 is gradually cooled in the throat 2 and then is introduced into the cooling chamber 3 through the inlet 3a.
It is cooled by cooling air whose temperature, humidity, air volume, and direction are adjusted. By providing the throat portion 2, cooling is performed gently, whereby the viscosity of the molten resin is kept low, and the filament fineness can be reduced even when low-pressure process air is used.
【０００９】また、冷却風は延伸風とは独立して用いら
れるため、冷却をより積極的に行う場合には冷却風の使
用量を増し、冷却を抑えたい場合は冷却風を減らすとよ
い。延伸と冷却過程を独立させることにより、広範囲の
繊度のフィラメントを安定して紡糸することができる。Further, since the cooling air is used independently of the drawing air, it is preferable to increase the amount of the cooling air used for more positive cooling and decrease the cooling air for suppressing the cooling. By making the drawing and cooling processes independent, filaments with a wide range of fineness can be stably spun.
【実施例】図１に示す装置を用い、冷却風量２０００Ｎ
ｍ3／ｈｒ／ｍ幅、延伸風速６０００ｍ／分で喉部２の
Ｌ1の長さを２０、５０、２００、３００、５００mmと
順次変えて０．３mmφ、２４７０孔の紡糸口金１から、
ＭＦＲ３５のポリプロピレンを単孔当たり、毎分０．２
１ｇ紡出した。その結果、Ｌ1が２０mmでは、紡出直後
に糸切れが発生し、紡糸することができなかったが、Ｌ
1を５０mm及び２００mmにすると、フィラメントの糸揺
れがなく安定した紡糸が行え、繊度も０．８ｄと、比較
的小さな繊度のフィラメントが得られた。またＬ1を３
００mmにすると、紡糸中のフィラメントに糸揺れが見ら
れ、繊度も１．０ｄと大きくなった。更にＬ1を５００m
mにした場合、糸揺れのためフィラメント同志が融着
し、紡糸ができなかった。以上の結果を表１に示す。EXAMPLE Using the apparatus shown in FIG. 1, a cooling air flow rate of 2000N
m 3 / hr / m width, drawing wind speed of 6000 m / min, the length of L 1 of the throat 2 is changed sequentially to 20, 50, 200, 300, 500 mm, and from the spinneret 1 of 0.3 mmφ, 2470 holes,
MFR35 polypropylene per hole 0.2 per minute
1 g was spun out. As a result, when L 1 was 20 mm, yarn breakage occurred immediately after spinning, and spinning could not be performed.
When 1 was set to 50 mm and 200 mm, stable spinning could be performed without filament sway, and filaments having a relatively small fineness of 0.8d were obtained. In addition, L 1 is 3
When it was set to 00 mm, the filament during spinning showed yarn wobbling and the fineness increased to 1.0 d. Further 500m the L 1
When the length was set to m, the filaments fused with each other due to the shaking of the yarn, and the spinning could not be performed. Table 1 shows the above results.
【表１】 [Table 1]
【００１０】[0010]
【発明の効果】本発明の不織布の製造方法及び装置によ
れば、冷却風は延伸風と独立して用いられるため、それ
ぞれ最適な条件に調整して冷却と延伸を行うことができ
るほか、強制冷却を行う前に自然冷却して徐冷する徐冷
過程を設けたことにより、繊度の大きなフィラメントは
もとより小さなフィラメントのものまで広範囲のデニー
ルのフィラメントよりなる不織布を安定して製造するこ
とができる。According to the method and apparatus for producing a nonwoven fabric of the present invention, since the cooling air is used independently of the drawing air, it is possible to adjust the cooling conditions to the optimum conditions and perform the cooling and the drawing. By providing the gradual cooling process of natural cooling and gradual cooling before cooling, it is possible to stably produce a non-woven fabric composed of a wide range of denier filaments including filaments having a large fineness and small filaments.
【図１】 本発明に係るスパンボンド不織布の製造装置
の概略図。FIG. 1 is a schematic view of an apparatus for producing a spunbonded nonwoven fabric according to the present invention.
１・・・紡糸口金 ２・・・喉部 ３・・・冷却室 ４・・・ルーパ ５・・・ブロワー ６・・・ダンパー ８・・・フィラメント ９・・・切換弁 1 ... Spinneret 2 ... Throat 3 ... Cooling chamber 4 ... Looper 5 ... Blower 6 ... Damper 8 ... Filament 9 ... Switching valve
Claims (8)
メントを冷却室に導入した冷却風により冷却したのち、
移動捕集面上に堆積させるスパンボンド不織布の製造方
法において、紡糸口金から冷却室に達するまでの間でフ
ィラメントを自然冷却して徐冷する徐冷過程と、冷却室
においてフィラメントに冷却風を流して強制冷却する過
程と、冷却されたフィラメントをノズルから導入した延
伸風で延伸する過程と、延伸したフィラメントを移動捕
集面上に堆積させる過程とよりなることを特徴とする不
織布の製造方法。1. After cooling a large number of continuous filaments spun from a spinning port with cooling air introduced into a cooling chamber,
In the method for producing a spunbonded nonwoven fabric that is deposited on the moving collection surface, a slow cooling process in which the filament is naturally cooled and gradually cooled from the spinneret to the cooling chamber, and cooling air is blown to the filament in the cooling chamber. And a process of forcibly cooling the filament, drawing the cooled filament with a drawing wind introduced from a nozzle, and depositing the drawn filament on the moving and collecting surface.
二方向から流される請求項１記載の不織布の製造方法。2. The method for producing a non-woven fabric according to claim 1, wherein the cooling air is applied to the filament in two opposite directions.
２００mmの範囲で行われる請求項１又は２記載の不織布
の製造方法。3. The distance from the spinneret is 50 to 50 in the slow cooling process.
The method for producing a nonwoven fabric according to claim 1 or 2, which is performed in a range of 200 mm.
度及び風量が調整される請求項１記載の不織布の製造方
法。4. The method for producing a nonwoven fabric according to claim 1, wherein the cooling air introduced into the cooling chamber is adjusted in temperature, humidity and air volume.
が調整される請求項１又は４記載の不織布の製造方法。5. The method for producing a non-woven fabric according to claim 1, wherein the cooling air introduced into the cooling chamber has an introduction angle adjusted.
絡過程は、ニードルパンチ機、熱エンボス、ウォーター
ジェットのうち、少なくともいづれか一つによっておこ
なわれる請求項１記載の不織布の製造方法。6. The method for producing a non-woven fabric according to claim 1, wherein the process of entanglement of the filaments deposited on the collecting surface is performed by at least one of a needle punch machine, heat embossing, and water jet.
紡糸口金と、冷却風の導入口と排出口を備え、紡糸され
たフィラメントに冷却風を流して強制冷却する冷却室
と、紡糸口金と冷却室を接続し、紡糸口金より紡出され
たフィラメントを自然冷却して徐冷する喉部と、延伸風
の導入口を有し、冷却室で強制冷却されたフィラメント
を延伸するノズルと、ノズルより吹出されたフィラメン
トを捕集する移動捕集面とよりなることを特徴とする不
織布の製造装置。7. A spinneret for continuously spinning a large number of filaments, a cooling chamber for introducing cooling air and an outlet for cooling air, forcing cooling air to flow through the spun filaments, forcibly cooling, and a spinneret and cooling. The chamber is connected, the throat that naturally cools and slowly cools the filament spun from the spinneret, the nozzle that has the inlet for drawing air, and the nozzle that draws the filament that is forcibly cooled in the cooling chamber, and the nozzle An apparatus for producing a non-woven fabric, comprising a moving collection surface for collecting blown filaments.
二方向から流される請求項７記載の不織布の製造装置。8. The apparatus for manufacturing a nonwoven fabric according to claim 7, wherein the cooling air is applied to the filament in two opposite directions.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4670695A JP3442896B2 (en) | 1994-04-22 | 1995-03-07 | Nonwoven fabric manufacturing method and apparatus |
| CN 95105161 CN1112975A (en) | 1994-04-22 | 1995-04-22 | Method and apparatus for producing nonwoven fabric |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8424794 | 1994-04-22 | ||
| JP6-84247 | 1994-04-22 | ||
| JP4670695A JP3442896B2 (en) | 1994-04-22 | 1995-03-07 | Nonwoven fabric manufacturing method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH083853A true JPH083853A (en) | 1996-01-09 |
| JP3442896B2 JP3442896B2 (en) | 2003-09-02 |
Family
ID=26386820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4670695A Expired - Lifetime JP3442896B2 (en) | 1994-04-22 | 1995-03-07 | Nonwoven fabric manufacturing method and apparatus |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3442896B2 (en) |
| CN (1) | CN1112975A (en) |
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| WO2011117146A2 (en) * | 2010-03-24 | 2011-09-29 | Oerlikon Textile Gmbh & Co. Kg | Method and device for melt spinning and cooling a plurality of synthetic threads |
| CN103370464B (en) | 2011-02-15 | 2016-08-17 | 三井化学株式会社 | Spun-bonded non-woven |
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-
1995
- 1995-03-07 JP JP4670695A patent/JP3442896B2/en not_active Expired - Lifetime
- 1995-04-22 CN CN 95105161 patent/CN1112975A/en active Pending
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| FR2792655A1 (en) * | 1999-04-23 | 2000-10-27 | Icbt Perfojet Sa | Plant making non=woven polymeric fabric, has independently controlled extrusion, cooling, stretching and laying down of fibres |
| WO2000065133A2 (en) * | 1999-04-23 | 2000-11-02 | Rieter Perfojet | Installation for making a nonwoven textile web and method for using such an installation |
| WO2000065133A3 (en) * | 1999-04-23 | 2002-10-03 | Rieter Perfojet | Installation for making a nonwoven textile web and method for using such an installation |
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| US8057205B2 (en) | 2001-04-06 | 2011-11-15 | Mitsui Chemicals, Inc. | Apparatus for manufacturing nonwoven fabric |
| US7780904B2 (en) | 2001-04-06 | 2010-08-24 | Mitsui Chemicals, Inc. | Method and apparatus for manufacturing nonwoven fabric |
| EP1937879A4 (en) * | 2005-09-14 | 2011-04-20 | Perry Hartge | Method and apparatus for forming melt spun nonwoven webs |
| WO2007091444A1 (en) | 2006-02-06 | 2007-08-16 | Mitsui Chemicals, Inc. | Spun-bonded nonwoven fabric |
| JP2016027222A (en) * | 2011-05-18 | 2016-02-18 | 株式会社シーエンジ | Method for manufacturing three-dimensional net-like structure and apparatus for manufacturing three-dimensional net-like structure |
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| WO2014119687A1 (en) * | 2013-01-30 | 2014-08-07 | 出光興産株式会社 | Fibrous nonwoven fabric |
| JPWO2014119687A1 (en) * | 2013-01-30 | 2017-01-26 | 出光興産株式会社 | Fiber nonwoven fabric |
| JP2019206792A (en) * | 2018-05-28 | 2019-12-05 | ライフェンホイザー・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング・ウント・コンパニー・コマンデイトゲゼルシャフト・マシイネンファブリーク | Device and method for manufacturing spun fleece composed of endless filaments |
| CN111139542A (en) * | 2019-12-18 | 2020-05-12 | 太仓荣文合成纤维有限公司 | Asymmetric cooling system spouts a silk |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1112975A (en) | 1995-12-06 |
| JP3442896B2 (en) | 2003-09-02 |
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