JPH0633360A - Production of nonwoven fabric - Google Patents
Production of nonwoven fabricInfo
- Publication number
- JPH0633360A JPH0633360A JP4223133A JP22313392A JPH0633360A JP H0633360 A JPH0633360 A JP H0633360A JP 4223133 A JP4223133 A JP 4223133A JP 22313392 A JP22313392 A JP 22313392A JP H0633360 A JPH0633360 A JP H0633360A
- Authority
- JP
- Japan
- Prior art keywords
- spun yarn
- air
- jet
- yarn
- conveyor
- 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.)
- Pending
Links
Landscapes
- Nonwoven Fabrics (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は紡出糸を捕集・移送コン
ベアー上に流体牽引装置を用いて細化牽引し放出して捕
集し、非織性ウエッブとなす所謂スパンボンド法不織布
製造法に関するものであり、就中ウエッブ沈積分布斑の
改善を行った高生産性にて均質な不織布を製造する方法
を提供するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the production of a so-called spunbonded non-woven fabric in which spun-bonded nonwoven fabric is obtained by thinning and drawing spun yarn on a collecting / transferring conveyor using a fluid towing device, discharging and collecting the spun yarn. The present invention relates to a method, and particularly to a method for producing a highly productive non-woven fabric with improved unevenness in web deposition distribution.
【０００２】[0002]
【従来の技術】紡出糸を捕集・移送コンベアー上に流体
牽引装置を用いて細化牽引し放出して捕集し不織布を製
造する不織布製造方法に於いては、紡出糸を如何にして
均等に捕集コンベアー上に分散分布させ捕集し均質なウ
エッブを製造するか、又この製造プロセスが高速生産時
に於いても斑の均質性を損なはずに何処まで高生産性を
維持できるプロセスであるかが、該不織布製造技プロセ
スの優劣を決定する最重要要素であり、従来多くの均等
化のための紡出糸分散分布方式が考案され優れた生産プ
ロセスが実用化されて居る。即ち、 多数のフィラメント束に静電気を負荷して帯電により
紡出糸を反発開繊させ、紡出糸が均等に沈積する如き位
置に配置させた多数のエアージェット装置を用いて高速
空気流により、該フィラメント束を移送し捕集コンベア
ー上に沈積させる方法（特公昭３７−４９９３ 特公昭
３７−１１２９３、特公昭４２−２３９９８） 直線上に並んだ紡糸口金のオリフィスから押出される
高重合体物質のフィラメントバンドの両側面に平行に吹
き当てる気流で紡出フィラメントを伸張し、該フィラメ
ントバンドを取り囲む平函状空気導管を通しフィラメン
トバンドを攪乱する事なく移送し又、必要なら該空気導
管を揺り動かせて紡出糸を均等に捕集コンベアー上に沈
積させる方法（特公昭４１−７８８３、特公昭４２−２
７５９９） 捕集・移送コンベアーの全幅に渡る狭小な矩形の面状
配置にした多数の紡糸オリフィスから紡出されたスダレ
状フィラメント帯を、フィラメントが固化するにたる距
離だけ下方に離して設置した狭小な矩形状スリツトを通
してスダレ状態でサッカーに導入し、高速エアージェッ
トで牽引細化しスダレ状の状態を乱さずに保ちながらサ
ッカーから空気流と共に捕集コンベアー上に吹き付け紡
出糸を均等に沈積させる方法（特公昭４８−３８０２
５） 捕集・移送コンベアーの幅方向に狭小な矩形状の紡糸
ノズルを配列し、紡出されるフィラメント群を矩形状の
エアージェツトで牽引し捕集コンベアーに向け噴出させ
非織性ウエッブを製造するに際し、牽引用エアージェッ
トの下方に設置し幅方向に平行で且つ下方が狭められ、
又両端面が開放された邪魔板状ガイドに吹き当てて紡出
糸を随伴する気流を幅方向に拡散させ、紡出糸を開繊拡
散させ均等にコンベアー上に沈積させる方法（特公昭５
３−３２４２４） 紡出糸牽引用ジェットから噴出する紡出糸を随伴する
高速気流を衝撃板に吹き当て紡出フィラメント束を開繊
してコンベアー上に沈積させる方法（特開昭４７−２９
４５７、特開昭５７−１７４６３、特開昭５２−２５４
６７） 等の他、何れも紡出されるフィラメント束を如何に効率
良く牽引細化するか、又如何に均等に開繊し拡散分布し
均等な沈積分布を持った不織布を得るかに工夫を懲ら
せ、幾多のプロセスが開発され実用化されて居る。2. Description of the Related Art In a non-woven fabric manufacturing method for producing a non-woven fabric by collecting a spun yarn on a collecting / transporting conveyor by using a fluid towing device, it is drawn and discharged to collect a spun yarn. Or evenly disperse and distribute it on the collection conveyor to collect and produce a uniform web, or this production process can maintain high productivity without impairing the uniformity of spots even during high-speed production. Whether or not it is a process is the most important factor that determines the superiority or inferiority of the non-woven fabric manufacturing process. Conventionally, many spun yarn distribution distribution systems for equalization have been devised and excellent production processes have been put to practical use. That is, by applying static electricity to a large number of filament bundles to repel and spread the spun yarn by electrification, and using a large number of air jet devices arranged at positions such that the spun yarn is evenly deposited A method of transferring the filament bundle and depositing it on a collecting conveyor (Japanese Patent Publication No. 37-4993, Japanese Patent Publication No. 37-11293, and Japanese Patent Publication No. 42-23998) of high polymer substance extruded from the orifices of the spinneret aligned in a straight line. The spun filament is stretched by a stream of air blown parallel to both sides of the filament band, and is transferred without disturbing the filament band through a flat air duct surrounding the filament band, and the air duct can be rocked if necessary. To evenly spun the spun yarn on the collecting conveyor (Japanese Patent Publication No. 41-7883, Japanese Patent Publication No. 42-2).
7599) A narrow filament strip spun from a large number of spinning orifices arranged in a narrow rectangular plane across the entire width of the collecting / transporting conveyor is installed at a distance below the filament as it solidifies. A method of introducing the spun yarn into the sucker through a rectangular rectangular slit, spraying it with a high-speed air jet, and spraying the spun yarn evenly from the sucker onto the collecting conveyor along with the air flow while keeping the streak state without disturbing. (Japanese Patent Publication Sho 48-3802
5) Narrow rectangular spinning nozzles are arranged in the width direction of the collecting / transferring conveyor, and the filaments to be spun are drawn by a rectangular air jet and ejected toward the collecting conveyor to produce a non-woven web. At the time of installation, it is installed below the towing air jet, which is parallel to the width direction and narrowed down,
In addition, a method in which the air current accompanying the spun yarn is diffused in the width direction by spraying the baffle-shaped guides whose both end surfaces are open, and the spun yarn is spread and diffused to be evenly deposited on the conveyor (Japanese Patent Publication No.
3-32424) A method in which a high-speed air stream accompanied with spun yarn ejected from a spun yarn towing jet is blown onto an impact plate to open the spun filament bundle and deposit it on a conveyor (Japanese Patent Laid-Open No. 47-29).
457, JP-A-57-17463, and JP-A-52-254.
67) In addition to the above, it is necessary to devise how to efficiently draw and thin the filament bundle to be spun, and how to evenly spread the fibers to obtain a non-woven fabric having a uniform distribution of distribution. Many processes have been developed and put into practical use.
【０００３】[0003]
【発明が解決しようとする課題】前記の如き開発の結果
紡出糸を開繊し均等に分散分布沈積させ非織性ウエッブ
を高生産性で生産するスパンボンド法不織布製造プロセ
スが開発されで実用化されるに至って居る。然しなが
ら、本スパンボンドプロセスの宿命的課題は、幅方向の
沈積分布の均質性に対して強制的に補正する手段が現在
開発されたプロセスの範囲内に於いては何ら提起され解
決されて居らず活気的対応策がない事であり、このため
紡出糸条の部分的開繊斑、部分的収束斑や、紡出糸の糸
道の揺れに伴う部分的紡出糸条帯密度分布斑の他、紡出
錘間のオーバーラップ不良やズレ等に伴う幅方向沈積分
布斑、所謂”タテ筋 ”の決定的解決策が未だに確立さ
れて居ない。そもそもスパンボンド法不織布製造法によ
り製造される不織布は、本質的に設定通り理想的に紡出
糸が沈積するならば均質な非織性ウエッブが得られる如
く紡糸ノズル−牽引用エアージェット等が配置され、ギ
アーポンプを用いて原料ポリマーを厳密な定量的管理下
にノズルより押出して製造するプロセスであるため、マ
クロな目付け斑は（例えば１ｍ×１ｍ角の如き大面積に
於ける目付けの斑）極めて少なく、又製造された不織布
を「タテ５ｃｍ×ヨコ全幅」の如く切り取り測定したタ
テ方向目付け分布斑は極めて少ないものであるのに反
し、部分的開繊斑、部分的収束斑や、紡出糸の糸道の揺
れに伴う部分的紡出糸条帯密度分布斑の他、紡出錘間の
オーバーラッブ不良やズレ等に基づく幅（ヨコ）方向沈
積分布斑はその発生因を矯正する効果的手段がないため
のため「タテ１ｍ×ヨコ５ｃｍ」の如く切り取り測定し
たヨコ方向目付け分布斑は大きく、このヨコ方向沈積分
布斑を解消する事が高生産性で均質なスパンボンド不織
布製造法を確立するために課せられる永遠の課題であ
る。本発明に於いては、このスパンボンド不織布製造法
に課せられた永遠の課題とも言はれる幅（ヨコ）方向沈
積分布斑発生因を矯正する効果的手段を提供し高生産性
で均質な不織布製造する活気的製造方法を開示した。As a result of the development as described above, a spunbonded non-woven fabric manufacturing process has been developed to open the spun yarn and deposit it in a uniform distribution distribution to produce a non-woven web with high productivity. It has been converted to. However, the fatal issue of this spunbond process has not been raised or solved within the scope of the process that has been developed to forcibly correct the homogeneity of the deposition distribution in the width direction. This is because there is no vigorous countermeasure, and as a result, there are partial spread irregularities, partial convergence irregularities of the spun yarn, and partial spun yarn band density distribution irregularities due to the fluctuation of the yarn path of the spun yarn. In addition, a decisive solution to the so-called "vertical muscle", which is the uneven distribution of the sedimentation in the width direction due to the overlap failure between the spinning spindles and the deviation, has not yet been established. In the first place, the non-woven fabric manufactured by the spun bond non-woven fabric manufacturing method has a spinning nozzle-a traction air jet or the like so that a homogeneous non-woven web is essentially obtained if the spun yarn is ideally deposited as set. Since it is a process in which a raw material polymer is extruded from a nozzle under strict quantitative control using a gear pump, macroscopic eye spotting (for example, eye spotting in a large area such as 1 m x 1 m square) is extremely large. Although the number of non-woven fabrics produced was cut and measured as "vertical 5 cm x width full width", the uneven distribution of the basis weight in the vertical direction was extremely small. On the contrary, partial spread spots, partial convergent spots and spun yarn In addition to the uneven density distribution of partially spun yarn strips due to the fluctuation of the yarn path, uneven distribution in the width (horizontal) direction due to defective overlapping or misalignment between the spinning weights is effective in correcting the cause. Since there is no fruitful means, the uneven distribution of the fabric weight in the horizontal direction, which is cut and measured like "1 m in the vertical direction × 5 cm in the horizontal direction", is large. It is a highly productive and uniform spunbonded nonwoven fabric manufacturing method that eliminates the uneven distribution in the horizontal direction deposition distribution. Is an eternal task that is imposed to establish. In the present invention, a non-woven fabric with high productivity and high homogeneity is provided, which provides an effective means for correcting the cause of the unevenness of deposition distribution in the width (horizontal) direction, which is said to be an eternal problem imposed on the spunbonded nonwoven fabric manufacturing method. A lively manufacturing method for manufacturing is disclosed.
【０００４】[0004]
【課題を解決する手段】前記の如くスパンポンド不織布
に於いて発生するヨコ方向の目付け分布斑は、紡出糸の
糸道の揺れに伴う部分的紡出糸条帯密度分布斑や紡出錘
間のオーバーラップ不良及び部分的開繊斑、部分的収束
斑等に基づくもので、これら斑発生因が生じた際その発
生因を除去しない限り、生産されるウエッブは斑発生箇
所が固定された状態で継続的に斑を発生しながら高速度
で連続的にウエッブ生産が行はれる事になるため所謂
”タテ筋 ”斑を持った不織布が得られる事になるの
である。然しながら、紡出糸の糸道の揺れに伴う部分的
紡出糸条帯密度分布斑や紡出錘間のオーバーラップ不良
及び部分的開繊斑、部分的収束斑等欠陥を強制的に矯正
する事は、これ等全ての斑発生因が気流に乗って移送さ
れる紡出糸条のユレ、収束、偏り等を制御しようとする
ものであり完全な制御は不可能であるため、これ等の抑
制レベルを現在得られる最高のレベルに維持する事を前
提に、そのレベルでの欠陥発生を容認して尚且つ均質な
非織性ウエッブを製造するプロセスの開発が必要であ
り、そこで本発明に於いてはこの要求を満足する手段と
して、斯かる状態の斑要素を内蔵する流体牽引機構（エ
アージェット）にて細化牽引され捕集・移送コンベアー
に向け放出される紡出糸条帯を随伴する気流を、該流体
牽引装置（エアージェット等）以降に設置した機械的気
流偏向機構或いは流体力学的気流偏向機構を用いてコン
ベアー進行方向と交叉する方向（即ちヨコ方向）に揺動
せしめ沈積位置を左右或いはやや斜め左右にずらしなが
ら捕集する方法を適用する事により、従来不可避であっ
た欠陥発生位置が固定されて継続的に発生する”タテ筋
斑 ”発生を回避させ、又局部斑の分散と平均化効果に
より沈積分布斑の改善を行うことに成功したのである。Means for solving the problems As mentioned above, the uneven distribution of the basis weight distribution in the spun-pond nonwoven fabric is caused by the unevenness of the partially spun yarn band density distribution and the spun weight caused by the fluctuation of the yarn path of the spun yarn. This is due to poor overlap between the spots, partial open spots, partial convergence spots, etc. When these spots are generated, unless the cause is removed, the web produced has the spots fixed. Since web production is continuously performed at a high speed while continuously producing spots in a state, a non-woven fabric having so-called "vertical streak" spots can be obtained. However, defects such as partial spun yarn band density distribution unevenness due to swaying of the yarn path of the spun yarn, defective overlap between spun weights, partial open spots, and partial convergence spots are forcibly corrected. The fact is that all of these plaque-causing factors try to control the swaying, converging, biasing, etc. of the spun yarn carried by the air flow, and complete control is impossible. Given the need to maintain the suppression levels at the highest levels currently available, there is a need for the development of a process that allows for the production of defects at that level and still produces a non-woven web that is homogeneous. In order to satisfy this requirement, a spun yarn band that is thinned and drawn by a fluid traction mechanism (air jet) containing the spot element in such a state and discharged toward a collection / transfer conveyor is accompanied. The air flow to be generated by the fluid traction device (air jet, etc.) A method of collecting by shifting the deposition position left or right or slightly diagonally left and right by swinging in a direction intersecting the conveyor traveling direction (that is, horizontal direction) using a mechanical airflow deflection mechanism or a hydrodynamic airflow deflection mechanism installed thereafter. By applying, it is possible to avoid the occurrence of "vertical muscle spots" that are continuously unavoidable by fixing the defect occurrence position, and improve the deposit distribution spots by dispersing and averaging local spots. It was successful.
【０００５】本発明の実施態様の詳細を以下に示す。前
記の如く本発明は紡糸ノズルより紡出された糸条帯を流
体牽引機構（エアージェット）より細化牽引しコンベア
ーに向け噴出させ、この紡出糸条を随伴した噴出気流を
該流体牽引装置（エアージェット等）出口以下に設置し
た機械的気流偏向機構或いは流体力学的気流偏向機構を
用いてコンベアー進行方向と交叉する方向（即ちヨコ方
拘）に揺動せしめ沈積位置を左右或いはやや斜め左右に
ずらせながら捕集する事により”タテ筋 ”のない均質
な非織性ウエッブを製造するプロセスであり、従来の均
整化に対する配慮で達成できなかった紡出糸条の収束
斑、開繊斑、糸道不安定に基く糸条分布密度不均等、オ
ーバーラッブ不良等に基く沈積分布の均質性不良を、紡
出糸条の沈積位置ををコンベアー進行方向に対し交叉す
る方向（即ちヨコ方向）に揺動させ左右或いはやや左右
にずらせて沈積させる事により、固定位置に連続して斑
が発生する事を避け斑を分散させ平均化して均質化する
方法であるため、紡出糸条帯を流体牽引機構（エアージ
ェット）より細化牽引しコンベアーに向け噴出させる方
法自体は、後の気流偏向機構により紡出糸条を揺動せし
めるプロセスの適用を困難ならしめたり、効率的な気流
偏向機構の設置或いは適用を阻害しない限り従来の如何
なる方法も紡出糸沈積分布に対し充分な配慮がなされて
居るものであれば適用可能であり従来プロセスへの適用
性も高い。然し気流偏向機構の効率を考えた時、紡出糸
がコンベアー進行方向に対し直交をなす方向に一列に並
んで紡出される如き紡糸ノズル及びエアージェットを選
定し配置する事がより望ましい。特に、紡出糸の糸条分
布密度の均質性の確保の容易さ、開繊状態の保持の容易
さと、気流偏向機構の効率を考えた際、全幅を通して一
体もので出来たノズル及びエアージェットの採用が好適
である。Details of the embodiments of the present invention will be given below. As described above, according to the present invention, the yarn band spun from the spinning nozzle is thinned and drawn by the fluid traction mechanism (air jet) and jetted toward the conveyor, and the jet airflow accompanied with the spun yarn is generated by the fluid traction device. (Air jet, etc.) Use a mechanical airflow deflection mechanism or a hydrodynamic airflow deflection mechanism installed below the exit to rock the depositing position to the left or right or slightly diagonally to the left or right in a direction intersecting with the conveyor traveling direction (that is, horizontal direction). It is a process to produce a uniform non-woven web without "vertical streaks" by collecting it while displacing it. Inhomogeneity of the sediment distribution due to uneven yarn distribution density due to instability of the yarn path, defective over-lapping, etc. is used in the direction in which the deposition position of the spun yarn crosses the conveyor traveling direction (that is, the horizontal direction). It is a method to disperse the spots and to homogenize by homogenizing them by avoiding continuous spots at a fixed position by rocking them to the left and right or slightly to the left and right to deposit them. The method of thinning and drawing the belt from the fluid traction mechanism (air jet) and ejecting it toward the conveyor itself makes it difficult to apply the process of oscillating the spun yarn by the air flow deflection mechanism later, or the efficient air flow. As long as the installation or application of the deflection mechanism is not hindered, any conventional method can be applied as long as sufficient consideration is given to the spun yarn deposition distribution, and the applicability to the conventional process is high. However, considering the efficiency of the air flow deflection mechanism, it is more preferable to select and arrange the spinning nozzles and air jets so that the spun yarns are spun in a line in a direction perpendicular to the traveling direction of the conveyor. In particular, considering the ease of ensuring the homogeneity of the yarn distribution density of the spun yarn, the ease of maintaining the opened state, and the efficiency of the air flow deflection mechanism, the nozzle and air jet that are made integral over the entire width Adoption is preferred.
【０００６】本発明に於ける紡出糸随伴気流偏向機構に
より揺動させ紡出糸条の沈積位置をコンベアー進行方向
に対しヨコ方向、即ち左右に平行移動或いはやや斜め左
右にずらせて沈積捕集させ、非織性ウエッブの均質性改
善を行うために必要な沈積位置変位量はさして大きな変
位を必要とせず１〜２０ｃｍ程度の変位があれば充分で
あり、特に好ましくは５〜１０ｃｍの変位を与える事が
好適である。この紡出糸沈積位置変位付与に於ける最重
要事項は全紡出糸条に同時に同一変位量を付与する事で
あり、少なくとも総体的変位量を部分的に変化させない
様に考慮する必要がある。好ましくは一斉に一体一列と
なった、同時同一方向揺動変位沈積捕集が望ましい。
又、揺動周期は製造対象の不織布がランダムループ組織
の不織布である事から特に高速揺動が必須事項とはなら
ないが、ウエッブ生産速度と揺動速度の関係から、ウエ
ッブに揺動パターンに基く斑が現れないように配慮すべ
き点より、３０サイクル／分以上の揺動速度が望まし
い。尚、紡出糸条を随伴する気流をコンベアー進行方向
と交叉する方向に揺動させ、沈積位置を左右に平行移動
或いはやや斜め左右にずらせながら沈積捕集させるため
の気流偏向機構には、以下に示す如く機械的気流偏向機
構と流体力学的気流偏向機構の２種類の偏向構構が適用
出来る。The deposition position of the spun yarn is oscillated by the air flow deflecting mechanism associated with the spun yarn in the present invention, and the deposition position is shifted in the horizontal direction with respect to the traveling direction of the conveyor, that is, leftward or rightward, or slightly slanted to the left or right. The amount of displacement of the deposition position required for improving the homogeneity of the non-woven web does not require a large displacement, and a displacement of about 1 to 20 cm is sufficient, and a displacement of 5 to 10 cm is particularly preferable. It is preferable to give it. The most important point in applying the displacement of the spun yarn deposition position is to apply the same displacement amount to all the spun yarns at the same time, and it is necessary to consider so that at least the total displacement amount is not partially changed. . It is preferable to simultaneously collect the swing displacement deposits in the same direction in one line at a time.
In addition, since the non-woven fabric to be manufactured is a non-woven fabric with a random loop structure, high-speed rocking is not particularly essential for the rocking cycle, but based on the relationship between the web production speed and the rocking speed, the web is based on the rocking pattern. A rocking speed of 30 cycles / minute or more is desirable from the viewpoint of preventing the appearance of spots. In addition, the air flow deflection mechanism for swaying the air flow accompanied by the spun yarn in a direction intersecting with the conveyor traveling direction, parallelly moving the deposition position to the left or right or slightly slanting to the left and right while collecting the deposition is as follows. Two types of deflection structures, a mechanical airflow deflection mechanism and a hydrodynamic airflow deflection mechanism, can be applied as shown in FIG.
【０００７】機械的気流偏向機構としては、紡出糸を随
伴する気流の進路を偏向できる機構であれば何れにても
良く、最も単純な例としては気流案内路を並べた気流偏
向ガイドを、紡出糸条を噴出するエアージェット出口下
に設置し、左右方向への機械的往復運動による揺動を行
えば良い。然しながら、長期間連続的に高速の機械的往
復運動を繰り返すことは耐久性面に問題もあるため、本
発明に於いては長期間の連続的高速揺動に適する高速機
械的気流偏向機構として、図１．図２．に示す如くロー
ラー軸に垂直をなす方向に対し傾斜した溝を並べて彫ら
れた回転するローラーを、コンベアー進行方向と交叉す
る方向に配列配置されたエアージェット装置と平行に且
つ、効果的にコアンダ効果を発揮し紡出糸を伴う噴出気
流がローラーに彫られた気流偏向案内溝に沿い流れる如
く紡出糸条を噴出するエアージェット出口下方位置に配
置せしめて、高速揺動させる機構を開発して適用し本発
明の生産システムを実用化した。気流偏向機構用ローラ
ーに彫る溝は傾斜角の大きくなく（１〜１０°）深さも
幅も大きくない（例えば〜３０ｍｍ）単なる螺旋溝でも
良いし、好ましい例としては実施例に於いても用いた如
き、ローラーの１／２周はローラー軸に対し＋１〜１０
°の傾斜角を持ち１／２周進んだ位置で傾斜角０とし反
転折り返させ、残り１／２周に於いて−１〜１０°の傾
斜角を持ち１／２周進んだ位置で傾斜角０とし反転折り
返させる如くローラー軸方向の変位量を正弦波曲線（Ａ
ｓｉｎθ）に従って彫られた、深さが深くなく又幅も広
くない面取りをした溝を隣接させて彫ったローラーが好
適である。これらのローラーの直径は１０ｃｍ〜６０ｃ
ｍが好ましく特に２０〜４０ｃｍが好適である。又この
ローラーは絶えず紡出糸条を随伴する気流を吹き当てら
れ紡出糸条で摩擦を受けるため、セラミック熔射による
コーティング他磨耗対策を講じて置くことが望ましい。
斯様に、気流偏向機構用ローラーを（コンベアー進行方
向と直角に配置配列した）エアージェット出口下方位置
にエアージェット装置と平行に且つ、効果的にコアンダ
効果を発揮する如き位置に配置し、紡出糸条を随伴する
気流を所定回転速度で回転せしめるローラー面に吹き当
てながら噴出させると、糸条随伴気流ははコアンダ効果
によりローラーに表面沿い流れ且つローラーに彫られた
溝に沿って流れるためローラー回転周期に応じただけの
揺動作用を受け、回転周期に対応する揺動周期でコンベ
アー進行方向と直角方向（左右方向）に平行に変位しな
がら、或いはやや斜め方向左右に平行に変位しながら沈
積させることが出来る。紡出糸の揺動変位沈積位置の変
位量（変位振幅）は、気流偏向機構用ローラーに彫られ
た溝の傾斜角と、該ローラー−捕集コンベアー関距離に
より決定されるので、所定の変位振幅（５〜３０ｃｍ）
が得られる如くこれらの値を設定すれば良い。The mechanical air flow deflecting mechanism may be any mechanism capable of deflecting the course of the air flow accompanying the spun yarn, and the simplest example is an air flow deflecting guide in which air flow guide paths are arranged. It may be installed below the air jet outlet for ejecting the spun yarn and oscillated by a mechanical reciprocating motion in the left-right direction. However, repeating high-speed mechanical reciprocating motion continuously for a long period of time has a problem in terms of durability. Therefore, in the present invention, as a high-speed mechanical airflow deflecting mechanism suitable for long-term continuous high-speed rocking, Figure 1. Figure 2. As shown in, the rotating roller engraved with grooves inclined with respect to the direction perpendicular to the roller axis is parallel to the air jet device arranged in the direction intersecting the traveling direction of the conveyor, and effectively the Coanda effect Developed a mechanism for oscillating at high speed by arranging the spun yarn below the air jet outlet that spouts the spun yarn so that the spouted air flow along with the air flow deflection guide groove engraved on the roller It was applied and the production system of the present invention was put into practical use. The groove engraved on the roller for the air flow deflecting mechanism may be a simple spiral groove having a large inclination angle (1 to 10 °) and a large depth and width (for example, to 30 mm), or as a preferable example, it is also used in Examples. As such, ½ round of the roller is +1 to 10 with respect to the roller axis.
It has a tilt angle of 0 ° and has a tilt angle of 0 at the position advanced by 1/2 turn. The amount of displacement in the roller axis direction is set to 0 and the sine wave curve (A
A roller with adjacent chamfered grooves that are not deep or wide and are engraved according to sin θ) is preferred. The diameter of these rollers is 10 cm to 60 c
m is preferable and 20 to 40 cm is particularly preferable. Further, since this roller is constantly blown with an air flow accompanied by the spun yarn and is rubbed by the spun yarn, it is desirable to take measures against abrasion such as coating by ceramic spraying.
As described above, the air flow deflecting mechanism rollers are arranged below the air jet outlet (arranged at right angles to the conveyor traveling direction) in parallel with the air jet device and at a position where the Coanda effect is effectively exhibited. When jetting air while entraining the air stream accompanying the yarns on the surface of the roller that rotates at a predetermined rotation speed, the air stream associated with the yarns flows along the surface of the roller due to the Coanda effect and along the grooves carved in the roller. It receives the oscillating action corresponding to the roller rotation cycle and displaces in parallel with the conveyor traveling direction at right angles (horizontal direction) at a oscillating cycle corresponding to the rotation cycle, or slightly diagonally to the left and right. Can be deposited while. Swing displacement of spun yarn The amount of displacement at the deposition position (displacement amplitude) is determined by the inclination angle of the groove engraved in the roller for the air flow deflection mechanism and the distance between the roller and the collecting conveyor. Amplitude (5-30 cm)
These values may be set so that
【０００８】流体力学的気流偏向機構としては、図３．
図４．に示した如きウエッブ捕集コンベアー進行方向と
交叉する方向に配列配置された紡出糸条牽引用（狭小矩
形形状）エアージェット装置出口の両側面に、該エアー
ジェットから紡出糸状を随伴して噴出する主噴流をスリ
ット軸方向（即ちコンベアー進行方向と直角をなす方
向）に平行或いはやや斜め左右方向に変位偏向せしめる
ために、第２のスリット状エアー噴射口を有するエアー
噴射装置を配置せしめ、この第２のエアー噴射装置のそ
れぞれ片側のスリット状噴射口から交互に、偏向用エア
ーをエアージェットのスリット長手軸面にほぼ平行に
（０〜１０°の傾斜角を持たせ）、且つコンベアー水平
面に対する垂直軸に対し１〜１５°、好ましくは３〜１
０°傾けて噴射させ、紡出糸状帯随伴気流をほぼ左右方
向に揺動させ紡出糸沈積位置を左右方向に平行に変位或
いはやや斜め左右方向に揺動変位させ沈積させる気流偏
向用ジェットが目的達成のために有効である。本流体力
学的気流偏向機構の実施態様例としては図３．図４．に
示す如く紡出糸条牽引用（狭小矩形形状）エアージェッ
ト装置出口の両側面に配置した、吹き出し方向を定めた
流路を持つ偏向用エアージェットにロータリーバルブを
介して、交互に片側ずつエアー供給サイドを切り替えて
エアーを供給して交互にジェット噴射させる方式の装置
が普遍的例として好適であり機構的にも単純な装置で、
紡出糸条が機械的な力により或いは偏向装置に触れて摩
擦を受けながら偏向されるものでないため、機械的要因
又は摩擦に基づく要因で発生するトラブルの心配はな
く、揺動周期も早く取り易い利点がある。A hydrodynamic air flow deflection mechanism is shown in FIG.
Figure 4. As shown in Fig. 2, the spun yarns are drawn from the air jets on both sides of the outlet of the air jet device for drawing a spun yarn (narrow rectangular shape) arranged in a direction intersecting with the traveling direction of the web collecting conveyor. An air jetting device having a second slit-shaped air jetting port is arranged in order to displace and deflect the jetting main jet in the axial direction of the slit (that is, in the direction perpendicular to the conveyor traveling direction) in a parallel or slightly oblique left-right direction, The deflecting air is alternately and substantially parallel to the slit longitudinal axis plane of the air jet (having an inclination angle of 0 to 10 °) from the slit-shaped jetting ports on one side of the second air jetting device, and the conveyor horizontal plane. 1 to 15 ° with respect to the vertical axis to, preferably 3-1
A jet for air flow deflection that injects at an angle of 0 ° and oscillates the spun yarn-like band-related airflow substantially in the left-right direction and displaces the spun yarn deposition position in parallel to the left-right direction or slightly oscillates in the left-right direction to deposit. It is effective for achieving the purpose. An example of an embodiment of the present hydrodynamic air flow deflection mechanism is shown in FIG. Figure 4. As shown in Fig. 4, the air jet device for drawing the spun yarn (narrow and rectangular shape) is arranged on both sides of the outlet, and the deflecting air jets with flow passages that define the blowing direction are alternately rotated one by one through a rotary valve. A device of a system in which the supply side is switched and air is supplied to alternately jet the jet is suitable as a universal example, and the device is mechanically simple.
Since the spun yarn is not deflected by mechanical force or by touching the deflecting device and being subjected to friction, there is no concern about troubles caused by mechanical factors or factors based on friction, and the swing cycle can be set quickly. There is an easy advantage.
【０００９】以下に本発明の方法による不織布製造プロ
セスの実施態様を実施例にて具体的に説明する。The embodiment of the nonwoven fabric manufacturing process according to the method of the present invention will be specifically described below with reference to examples.
【実施例１】図１．に示した如きスパンボンド不織布製
造装置、即ち２９０℃に加熱され温度調節された直線配
列紡糸ノズルから（オリフィス径：０．３ｍｍ，オリ
フィス間ピッチ：６．５ｍｍ，列数：８列，の長尺直線
配列ノズル）、極限粘度０．６０のポリエチレンテレフ
タレートを１．５ｇ／孔．分の押出し速度で溶融紡糸
し、ノズル下６０ｃｍに及ぶクエンチ装置より紡出糸状
帯に対し片側側面より、直交する整流された２５℃、６
５％Ｒ．Ｈ，の冷却風を吹き当て冷却し、ノズル下８０
ｃｍの位置に配置した紡糸ノズル長軸方向と軸方向を同
じくする狭小矩形形状（スリット型）糸条牽引エアージ
ェット装置にて４，５００ｍ／分の紡速で牽引細化延
伸し、エアージェット出口よりコンベアー面に向け紡出
糸条帯を随伴する高速牽引気流と伴に噴出させ、該エア
ージェット出口下１０ｃｍの位置に、表面円周方向に
１．８５６ｓｉｎθの正弦波曲線をなす気流偏向用ガイ
ド溝を隣接して彫った、直径３０ｃｍのローラーをロ
ーラー軸をエアージェット長軸方向と平行に保ち且つ、
該ローラー面をエアージェット長軸面に対し５ｃｍ突き
出し噴出気流が吹き当たる位置に設置せしめ、紡出糸条
随伴気流を１２０ｒｐｍで回転する該気流偏向用ローラ
ーに吹き当て、紡出糸条帯随伴気流をコアシダ効果によ
り該ローラーの気流偏向用ガイド溝に沿って流れせしめ
左右に揺動させ、更に該ローラーの下方５０ｃｍに設置
された捕集コンベアー（走行速度６０ｍ／分）の進行
方向に向かってやや後方位置左右方向に平行に振幅１０
ｃｍ、揺動周期１２０ヘルツ／分で変位揺動させられな
がら沈積捕集させ、紡出糸条帯に於ける糸道ユレに伴う
糸条分布密度の部分的偏り、収束斑、開繊斑に基づく非
織性ウエッブに於けるヨコ方向沈積分布斑、即ち所謂
”タテ筋 ”を解消した均整度に優れたスパンボンド
不織布（３０ｇ／ｍ２）を得た。斯くして得られた不
織布の幅方向沈積分布斑は、全幅にわたり５ｃｍ（幅）
×１００ｃｍ（縦）の寸法の目付け分布測定用試料を隣
接して切り取り、目付け分布のバラツキを測定したとこ
ろ、目付け分布変動係数ＣＶ％＝４％で目視的にも均整
で、同一スパンボンド不織布製造装置で気流偏向機構用
ローラーを付さずに製造したスパンボンド不織布の幅方
向沈積分布斑変動係数がＣＶ％＝７．５％で目視的に
も”タテ筋”が認められるのに対し均整度が一段と向上
されて居た。本気流偏向揺動機構は、気流偏向機構用ロ
ーラーの回転数変更により揺動周期を変更出来るため揺
動周期変更を機械的負担なく容易に行う事ができ、気流
偏向機構用ローラー回転に追従し揺動可能な上限も２０
０ｒｐｍ程度と、実用上充分な高速揺動周期まで追従可
能で、高生産速度のウエッブ生産に於いても完全な沈積
分布斑改善効果を得ることが出来る事を実証した。[Embodiment 1] FIG. From the spunbonded non-woven fabric manufacturing apparatus as shown in FIG. 1, that is, from a linear array spinning nozzle heated to 290 ° C. and adjusted in temperature (orifice diameter: 0.3 mm, pitch between orifices: 6.5 mm, number of rows: 8 rows) (Linear array nozzle), 1.5 g / hole of polyethylene terephthalate having an intrinsic viscosity of 0.60. It is melt-spun at an extrusion speed of 1 minute, and is spun by a quenching device extending to 60 cm below the nozzle. One side surface is orthogonal to the filamentous strip, and it is straightened at 25 ° C.
5% R. H, cooling air is blown to cool, and the nozzle bottom 80
Spinning nozzle placed at a position of cm. A narrow rectangular shape (slit type) that has the same axial direction as the major axis direction. A yarn drawing air jet device draws and draws at a spinning speed of 4,500 m / min, and the air jet outlet. A guide for air flow deflection which is ejected along with a high-speed traction air flow accompanied by a spun yarn band toward the conveyor surface and forms a sinusoidal curve of 1.856 sin θ in the surface circumferential direction at a position 10 cm below the air jet outlet. A roller having a diameter of 30 cm with a groove engraved adjacently is kept with the roller axis parallel to the long axis direction of the air jet,
The roller surface is placed at a position where it is projected 5 cm from the long axis of the air jet and the jet air stream blows against it, and the spun yarn associated air stream is blown against the air flow deflecting roller rotating at 120 rpm. Is made to flow along the air flow deflecting guide groove of the roller by the core fern effect and rocked to the left and right, and a little further toward the advancing direction of the collecting conveyor (running speed 60 m / min) installed 50 cm below the roller. Rear position Amplitude 10 parallel to left-right direction
cm, oscillating cycle of 120 hertz / min. While being oscillated and collected, the sediment is collected, resulting in partial deviation of the yarn distribution density due to yarn path strain in the spun yarn band, convergence unevenness, and spread unevenness. As a result, a spunbonded nonwoven fabric (30 g / m 2 ) having excellent uniformity was obtained in which the unevenness in the horizontal distribution of the non-woven web, that is, the so-called "vertical streak" was eliminated. The widthwise deposition distribution unevenness of the non-woven fabric thus obtained is 5 cm (width) over the entire width.
A sample for measuring the basis weight distribution having a dimension of × 100 cm (length) was cut out adjacently, and the variation in the basis weight distribution was measured. As a result, the coefficient of variation of the basis weight distribution CV% = 4% was visually evenly proportioned to produce the same spunbond nonwoven fabric. In the spunbonded non-woven fabric manufactured without using the air flow deflecting mechanism roller, the coefficient of variation of deposition distribution in the width direction is CV% = 7.5%, and "vertical streak" is visually recognized, while the uniformity ratio is observed. Was being further improved. This airflow deflecting and swinging mechanism can change the swinging cycle by changing the number of rotations of the roller for the airflow deflecting mechanism, so that the swinging cycle can be easily changed without mechanical load, and it follows the rotation of the roller for the airflow deflecting mechanism. The upper limit of rocking is also 20
It has been demonstrated that it is possible to follow a high-speed rocking cycle of about 0 rpm, which is practically sufficient, and it is possible to obtain a complete deposit distribution unevenness improving effect even in high-speed web production.
【実施例２】実施例１と同一のスパンボンド不織布製造
装置に於いて製造条件も同一にして、紡出糸条揺動機構
のみを流体力学的揺動機構に変更して不織布を製造し下
記の結果を得た。即ち、実施例１の気流偏向機構用ロー
ラーに換え、図３．図４．に示した紡出糸条細化牽引用
エアージェット装置出口部分の両側面に装着した噴出気
流偏向用ジェットプレナムより、スリット状エアージェ
ット装置長軸方向に平行な垂直面方向、即ち噴出気流面
に対する（コンベアー進行方向前後への傾き）傾き５
°、コンベアーベルト平面（コンベアー左右方向への傾
き）に対し５°の傾きを有する気流をロータリーバルブ
を用いて交互に片側より噴出させ、紡出糸条帯を６０ヘ
ルツ／分の揺動周期で、振幅１０ｃｍにてやや斜め左右
方向に揺動させ沈積捕集し、３０ｇ／ｍ２のスパンボン
ド不織布を製造した。この不織布の幅方向沈積分布斑変
動係数は、ＣＶ％＝４．５％で実施例１と同様気流偏向
機構を付さないで製造した不織布に比べ均整度が一段と
改善されて居た。Example 2 In the same spunbonded nonwoven fabric manufacturing apparatus as in Example 1, the manufacturing conditions were the same, and only the spun yarn rocking mechanism was changed to a hydrodynamic rocking mechanism to manufacture a nonwoven fabric. Got the result. That is, instead of the roller for the air flow deflecting mechanism of Example 1, as shown in FIG. Figure 4. From the jet plenum for jet air flow deflection installed on both sides of the outlet part of the air jet device for spun yarn drawing and pulling shown in Fig. 5, the slit-like air jet device with respect to the vertical plane direction parallel to the long axis direction, that is, the jet air flow face (Tilt to the front and back of the conveyor direction) Tilt 5
°, an air flow having an inclination of 5 ° to the plane of the conveyor belt (inclination to the left and right of the conveyor) is alternately jetted from one side using a rotary valve, and the spun yarn strip is oscillated at a rate of 60 hertz / min. Then, it was rocked slightly obliquely in the left-right direction at an amplitude of 10 cm, deposited and collected to produce a spunbonded nonwoven fabric of 30 g / m 2 . The coefficient of variation of deposition distribution unevenness in the width direction of this non-woven fabric was CV% = 4.5%, and the uniformity was further improved as compared with the non-woven fabric manufactured without the air flow deflection mechanism as in Example 1.
【００１０】[0010]
【発明の効果】本発明は上記の如く構成されて居り下記
の如き効果を有する。 紡糸ノズルより押出される紡出糸条を牽引ローラー等
の機械的手段か或いは又、エアージェット等の流体牽引
装置を用いて牽引細化延伸し、該紡出糸束或いは糸条帯
をエアージェット等の流体牽引装置にて噴出エアーとと
もに、吸引装置を設けたウエッブ捕集コンベアー上に放
出し均等に沈積分散分布せしめ捕集してウエッブを製造
する不織布製造方法に於いて、エアージェット等の流体
牽引装置下方に設置した機械的気流偏向機構或いは流体
力学的気流偏向機構により、紡出糸随伴気流をコンベア
ー進行方向と交叉する方向（ヨコ左右方向）に揺動せし
めて捕集する事により、従来強制的に矯正不可能であっ
た紡出糸束或いは紡出糸帯に於ける糸条分布不均等、或
いは収束斑又は開繊斑等の糸条密度不均等に基きヨコ方
向定位置に連続して生じるウエッブの沈積分布斑を分散
均等化し、所謂 ”タテ筋 ”を解消し均整度優秀な不
織布を製造する方法を提供した。 本発明は、紡出糸条帯を流体牽引機構（エアージェッ
ト）より細化牽引しコンベアーに向け噴出さる紡出糸条
の沈積位置を、コンベアー進行方向に対し交叉する方向
（即ちヨコ方向）に気流偏向機構により揺動させ左右或
いはやや左右にずらせて沈積させる事により斑を分散さ
せ平均化して均質化する方法であるため、効率的な気流
偏向機構の設置或いは適用を阻害しない限り従来の如何
なる方法も適用可能であり従来プロセスへの適用性も高
い。 本発明の気流偏向機構は高速揺動に対応可能な機構で
あり、故障なく高生産性のプロセスに適用して優れたウ
エッブ均整化効果を示す事が出来る。The present invention is constructed as described above and has the following effects. The spun yarn extruded from the spinning nozzle is drawn and stretched by mechanical means such as a traction roller or a fluid traction device such as an air jet, and the spun yarn bundle or yarn band is air jetted. In a non-woven fabric manufacturing method in which a web is ejected by a fluid towing device such as a jetting air and discharged onto a web collecting conveyer provided with a suction device to evenly deposit and disperse the web to collect and produce a web, a fluid such as an air jet With a mechanical airflow deflection mechanism or hydrodynamic airflow deflection mechanism installed below the traction device, the spun yarn-associated airflow is swung in a direction intersecting the traveling direction of the conveyor (horizontal left-right direction) and collected. Based on uneven yarn distribution in the spun yarn bundle or spun yarn band that could not be forcibly corrected, or uneven yarn density such as uneven spots or spread spots hand It dispersed equalize the deposition distribution plaque Jill web, to provide a method of manufacturing a uniformity ratio excellent nonwoven eliminating so-called "vertical muscle". INDUSTRIAL APPLICABILITY The present invention is directed to a direction in which the deposition position of the spun yarn, which is drawn and spun toward the conveyor by thinning and drawing the spun yarn band from the fluid traction mechanism, crosses the traveling direction of the conveyor (that is, horizontal direction). It is a method of oscillating by the air flow deflecting mechanism and shifting it to the left or right or a little to the left and right to disperse the spots so as to average and homogenize it, so that it does not interfere with the installation or application of an efficient air flow deflecting mechanism. The method can be applied and is highly applicable to conventional processes. The air flow deflecting mechanism of the present invention is a mechanism that can cope with high-speed rocking, and can be applied to a highly productive process without failure to exhibit an excellent web balancing effect.
【図１】図面は機械的気流偏向機構を付した不織布製造
装置の実施態様例を示す概要図である。 図中 ：紡糸ノズル ：紡出糸条帯 ：紡出糸細化牽引用エアージェット装置 ：（気流偏向揺動ガイド溝付き）機械的気流偏向機構
ロール ：沈積非織性ウエッブ ：捕集・移送用コンベアー ：サクションボックスFIG. 1 is a schematic view showing an embodiment example of a nonwoven fabric manufacturing apparatus provided with a mechanical air flow deflection mechanism. In the figure: Spinning nozzle: Spinning yarn strip: Air jet device for spinning yarn thinning and traction: Mechanical airflow deflection mechanism (with airflow deflection swing guide groove) Roll: Deposited non-woven web: Collection / transportation Conveyor: Suction box
【図２】図は気流偏向揺動ガイド溝付き機械的気流偏向
機構ロールを示す。 図中 ：気流偏向揺動方イド溝付き機械的気流偏向機
構ロール ：同上ロール表層気流偏向揺動ガイド溝彫刻パターン
表示展開図FIG. 2 shows a mechanical air flow deflection mechanism roll with an air flow deflection swing guide groove. In the figure: Mechanical air flow deflecting mechanism roll with air flow deflection swing groove ： Same as above Roll surface layer Air flow deflection swing guide groove Engraved pattern display development view
【図３】図面は流体力学的気流偏向機構を付した不織布
製造装置の実施態様例を示す概要図である。 図中 ：紡糸ノズル ：紡出糸条帯 ：紡出糸細化牽引用エアージェット装置 ：気流偏向機構ジェットプレナム供給エアー用ロータ
リバルブ ：流体力学的気流偏向機構ジェットプレナム ：沈積非織性ウエッブ ：捕集・移送用コンベアー ：サクションボックスFIG. 3 is a schematic view showing an embodiment example of a nonwoven fabric manufacturing apparatus provided with a hydrodynamic air flow deflection mechanism. In the figure: Spinning nozzle: Spinning yarn strip: Air jet device for spinning yarn thinning and pulling: Airflow deflection mechanism Jet plenum Supply air rotary valve: Hydrodynamic airflow deflection mechanism Jet plenum: Non-woven web deposited: Captured Collection and transfer conveyor: Suction box
【図４】図面は流体力学的気流偏向機構ジェットプレナ
ムの概要図を示す。 図中 ：紡出糸条細化牽引用エアージェット ：同上ジェツト供給エアー用ヘッダー ：気流偏向機構用ジェットプレナム供給エアー用ヘッ
ダー ：気流偏向機構用ジェットプレナムエアー供給用ロ
ータリーバルブ紡出糸条細化牽引用エアージェツトを挟
み構成される一対の気流偏向機構ジェットプレナムに対
し、交互にエアー供給する用一対のロータリーバルブで
構成される。 ：気流偏向機構用ジェットプレナム ：気流偏向機構用ジェットプレナムエアー噴射スリッ
ト部 一対の気流偏向機構用ジェットプレナムのエアー噴射ス
リット部で、噴射方向を左右交互に噴射可とする如くス
リット傾斜方向を異とする一対の噴射スリットより構成
されて居る。（片側のみ図示）FIG. 4 shows a schematic view of a hydrodynamic airflow deflector jet plenum. In the figure: Air jet for towing spun filaments: Same as above Jet supply air header: Jet plenum supply air header for air flow deflection mechanism: Jet plenum air supply rotary valve for air flow deflection mechanism It is composed of a pair of rotary valves for alternately supplying air to a pair of air flow deflection mechanism jet plenums that sandwich the air jet. : Jet plenum for air flow deflection mechanism: Jet plenum for air flow deflection mechanism Air injection slits The air injection slits of a pair of jet plenums for air flow deflection mechanism have different slit inclination directions so that the injection directions can be alternated right and left. It is composed of a pair of injection slits. (Only one side shown)
Claims (3)
ベヤー上方に配置された紡糸ノズルに穿たれたオリフイ
スより押出される紡出糸条を、牽引ローラー等の機械的
手段か或いは又、エアージェット等の流体牽引装置を用
いて牽引細化延伸し、該紡出糸束或いは糸条帯をエアー
ジェット等の流体牽引装置にて噴出エアーとともにウエ
ッブ捕集コンベアー上に放出し均等に沈積分散分布せし
め捕集してウエッブを製造する不織布製造方法に於い
て、エアージェット等の流体牽引装置下方に設置した気
流偏向機構により紡出糸随伴気流をコンベアー進行方向
と交叉する方向に揺動せしめて捕集し、紡出糸束或いは
紡出糸帯に於ける糸条分布不均或いは収束斑又は開繊斑
等の糸条密度不均等に基くウエッブの沈積分布斑を解消
した均整度優秀な不織布製造方法Claim: What is claimed is: 1. A spinning yarn extruded from an orifice formed in a spinning nozzle disposed above a web collecting / transferring conveyor provided with a suction device, is provided by a mechanical means such as a pulling roller or air. It is drawn and stretched by using a fluid towing device such as a jet, and the spun yarn bundle or yarn band is discharged onto a web collecting conveyor together with jet air by a fluid towing device such as an air jet, and evenly deposited and distributed. In a non-woven fabric manufacturing method for collecting webs to collect webs, an air flow deflecting mechanism installed below a fluid traction device such as an air jet swings a spun yarn-associated air flow in a direction intersecting with a traveling direction of a conveyor and captures the web. The uneven distribution of the yarns in the spun yarn bundle or the spun yarn band or the uneven distribution of the web due to uneven distribution of yarn density such as uneven spots or spread yarns Cloth manufacturing method
て、捕集コンベアー進行方向と交差する方向に並ぶ糸条
帯として、エアージェツト装置から糸条帯を随伴エアー
と共に噴出せしめ、該エアージュット装置の下方にロー
ラー軸と垂直をなす方向に対し傾斜した溝を並べて彫ら
れた回転するローラーを、エアージェット装置と平行に
且つ、効果的にコアンダ効果を発揮し紡出糸を伴う噴出
気流がローラーに彫られた気流偏向案内溝に沿い流れる
如く配置せしめる事により、紡出糸を伴う噴出気流をコ
ンベアー進行方向に交叉する方向に偏向揺動せしめて沈
積捕集し、紡出糸の糸条分布密度不均整に基くウエッブ
の幅方向に於ける沈積分布斑を解消せしめる事を特徴と
する均整度の優秀な不織布製造方法2. The non-woven fabric manufacturing apparatus according to claim 1, wherein the yarn jets are jetted together with the accompanying air from the air jetting device as the yarn strips arranged in a direction intersecting with the traveling direction of the collecting conveyor. A rotating roller engraved with grooves slanting with respect to the direction perpendicular to the roller axis under the device is installed in parallel with the air jet device and effectively exerts the Coanda effect to generate a jet of air with spun yarn. By arranging so that it flows along the air flow deflection guide groove engraved on the roller, the spouted air flow accompanied with the spun yarn is deflected and swung in the direction intersecting the traveling direction of the conveyor to collect and collect the spun yarn, A method for producing a non-woven fabric with excellent uniformity, which is characterized by eliminating unevenness in the deposition distribution in the width direction of the web based on the uneven distribution density.
て、捕集コンベアー進行方向と交叉する方向に列をなす
糸条帯として糸条を細化延伸しコンベアーに向け噴射す
る牽引装置としてスリット型エアージェットを用い、更
にこのスリット型エアージェットの噴出部に紡出糸を伴
う噴出気流の噴出飛翔方位をスリット軸方向と平行変位
に、或いはスリット軸と平行変位に近い傾斜角位置に向
け偏向させ飛翔させるべく、交互に正逆の噴射方向に切
り替えて偏向用エアー噴射可能な一対の流体噴射スリッ
トを持った偏向機構用ジェットプレナムを設け、偏向用
噴射気流を紡出糸を伴う噴出気流に向け噴射させ偏向揺
動せしめ、紡出糸条をコンべアー進行方向に交叉する方
向にて揺動変位沈積捕集し、紡出糸の糸条分布密度不均
整に基くウエッブの幅方向に於ける沈積分布斑を解消せ
しめた事を特徴とする均整度の優秀な不織布製造方法3. The non-woven fabric manufacturing apparatus according to claim 1, wherein as a towing device for thinning and stretching the yarns as yarn bands forming a row in a direction intersecting with the advancing direction of the collecting conveyer, A slit-type air jet is used, and the jetting direction of the jet airflow accompanied with spun yarn is further directed to the slit axis direction to a displacement parallel to the slit axis direction, or to a tilt angle position close to the slit axis parallel displacement. To deflect and fly, the jet plenum for the deflection mechanism is provided with a pair of fluid jet slits that can switch the forward and reverse jetting directions alternately and can jet air for deflection. The spun yarn is collected by rocking displacement deposition in a direction intersecting the conveyor traveling direction, and the web is formed based on the yarn distribution density imbalance of the spun yarn. Excellent nonwoven fabric manufacturing method of the uniformity ratio, characterized in that was allowed overcome in deposition distribution unevenness in a direction
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4223133A JPH0633360A (en) | 1992-07-10 | 1992-07-10 | Production of nonwoven fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4223133A JPH0633360A (en) | 1992-07-10 | 1992-07-10 | Production of nonwoven fabric |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0633360A true JPH0633360A (en) | 1994-02-08 |
Family
ID=16793317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4223133A Pending JPH0633360A (en) | 1992-07-10 | 1992-07-10 | Production of nonwoven fabric |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0633360A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1178142A1 (en) * | 2000-07-25 | 2002-02-06 | Carl Freudenberg KG | Method and apparatus for making a spunbonded nonwoven |
| US6787192B2 (en) | 2000-04-27 | 2004-09-07 | Otsuka Kagaku Kabushiki Kaisha | Process for producing part made of magnesium and/or magnesium alloy |
| FR2858985A1 (en) * | 2003-07-24 | 2005-02-25 | Yao Chang Lin | Production of non-woven fabric, involves passing filaments extruded from fiber forming resin through cooling device, rollers and heater, stretching filaments, and forming filaments into non-woven fabric on conveyor screen belt |
| CN106988021A (en) * | 2017-05-08 | 2017-07-28 | 大连华纶无纺设备工程有限公司 | A kind of helix drum wire oscillator for spun-bonded hot rolling non-woven fabric equipment |
| EP3754082A1 (en) * | 2019-06-18 | 2020-12-23 | SICAM - S.R.L. Societa' Italiana Costruzioni Aeromeccaniche | Fiber deposition tool for production of non-woven fabrics by spunbonding |
-
1992
- 1992-07-10 JP JP4223133A patent/JPH0633360A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6787192B2 (en) | 2000-04-27 | 2004-09-07 | Otsuka Kagaku Kabushiki Kaisha | Process for producing part made of magnesium and/or magnesium alloy |
| EP1178142A1 (en) * | 2000-07-25 | 2002-02-06 | Carl Freudenberg KG | Method and apparatus for making a spunbonded nonwoven |
| US6887331B2 (en) | 2000-07-25 | 2005-05-03 | Firma Carl Freudenberg | Method and device for producing a spunbonded nonwoven fabric |
| US7191813B2 (en) | 2000-07-25 | 2007-03-20 | Firma Carl Freudenberg | Method and device for producing a spunbonded nonwoven fabric |
| FR2858985A1 (en) * | 2003-07-24 | 2005-02-25 | Yao Chang Lin | Production of non-woven fabric, involves passing filaments extruded from fiber forming resin through cooling device, rollers and heater, stretching filaments, and forming filaments into non-woven fabric on conveyor screen belt |
| CN106988021A (en) * | 2017-05-08 | 2017-07-28 | 大连华纶无纺设备工程有限公司 | A kind of helix drum wire oscillator for spun-bonded hot rolling non-woven fabric equipment |
| EP3754082A1 (en) * | 2019-06-18 | 2020-12-23 | SICAM - S.R.L. Societa' Italiana Costruzioni Aeromeccaniche | Fiber deposition tool for production of non-woven fabrics by spunbonding |
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