JP2005325470A - Machine for manufacturing nonwoven fabric and method for producing nonwoven fabric - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a machine for manufacturing nonwoven fabrics, preventing occurrence of nonwoven fabric disturbance and fiber arrangement disturbance on a collector plane and obtaining well-set-up nonwoven fabrics even when setting two or more spinneret arrays comprising plural spinnerets for melt-spinning continuous thread groups where, which spinnerets are arranged in the cross direction, and to provide a method for manufacturing balanced nonwoven fabrics by using the machine. <P>SOLUTION: The machine for manufacturing nonwoven fabrics has two or more spinneret arrays comprising plural spinnerets arranged in the cross direction and for melt-spinning continuous thread groups, is equipped with an air sucker corresponding to the spinnerets and for drafting, drawing and withdrawing the continuous thread groups spun from the spinnerets and an opening device for opening the continuous thread groups, and has, thereunder, a moving collector plane for continuously collecting and accumulating the continuous thread groups to form nonwoven webs, wherein a D.C. static eliminator is set between positions for collecting on the moving collector plane the continuous thread groups melt-spun from each array of the spinnerets. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、連続糸条からなる不織ウェブを製造する装置及びその装置を用いた不織布の製造方法に関するものである。   The present invention relates to an apparatus for producing a nonwoven web composed of continuous yarns and a method for producing a nonwoven fabric using the apparatus.

従来から、連続糸条からなる不織ウェブを製造するに際して、紡出糸条群を紡糸口金の下流に該紡糸口金に対応して配設されたエアーサッカにより牽引・延伸・引き取り、開繊装置により開繊した後、連続して移動式捕集面上に捕集・堆積して不織ウェブを得るスパンボンド法が多く採用されている。スパンボンド法による連続糸条群からなる不織ウェブの製造方法は、例えば、特許文献１に提案されており、近年、高生産性、低コストといった優位性により、ますますその需要は高まっている。   Conventionally, when producing a nonwoven web composed of continuous yarns, a spinning yarn group is pulled, drawn and pulled by an air sucker disposed downstream of the spinneret corresponding to the spinneret, and a fiber opening device. A spunbond method is often employed in which a nonwoven web is obtained by continuously collecting and depositing on a movable collection surface after the fiber is opened. A method for producing a nonwoven web composed of continuous yarns by the spunbond method has been proposed in, for example, Patent Document 1, and in recent years, the demand is increasing due to advantages such as high productivity and low cost. .

このスパンボンド法による連続糸条群からなる不織ウェブの製造に際して、さらに生産性を向上させる方法あるいは目付の大きいウェブを得る方法として、幅方向に多数配置させた紡糸口金の列（紡糸口金列）を、機械方向を横切るように２列以上配置することが行われている。この方法は、第１列目の紡糸口金列より紡出された連続糸条群により形成された不織ウェブ上にさらに第２列目以降の紡糸口金列より紡出された連続糸条群を噴き付けて捕集・堆積するが、一旦、捕集・堆積させたウェブ上に、さらに糸条群が噴きつけられるため、エアーサッカによる噴きつけ気流や開繊装置等による帯電の影響により、ウェブのめくれや繊維配列の乱れが生じ、均整な地合の不織布が得にくいという問題がある。   When producing a nonwoven web composed of continuous yarns by the spunbond method, as a method for improving productivity or obtaining a web having a large basis weight, a series of spinneret rows arranged in the width direction (spinneret rows) ) Are arranged in two or more rows so as to cross the machine direction. In this method, continuous yarn groups spun from the second and subsequent spinneret rows are further formed on the nonwoven web formed by the continuous yarn groups spun from the first row of spinneret rows. The yarns are collected and deposited by spraying, but since the yarn group is further sprayed on the collected and accumulated web, the web is affected by the air flow from the air sucker and the charging by the fiber opening device. There is a problem that curling and disorder of the fiber arrangement occur and it is difficult to obtain a nonwoven fabric with a uniform texture.

このような問題の解決策として特許文献２に、移動式捕集面をネットとし、ネットを介してエアーを吸引するゾーンを設けて不織ウェブを捕集することによって、ウェブのめくれやフィラメント配列の乱れを防止する方法が提案されている。しかし、この方法においても、エアーの吸引量を多くすると周辺空間の空気を吸引することによる気流の乱れを生じ、一方、吸引量が少ないとエアーサッカによる高速気流を充分に吸引することができないことによる気流の乱れが生じ、吸引量の設定だけでは不織ウェブのめくれやフィラメント配列の乱れを完全に防止することは困難である。   As a solution to such a problem, in Patent Document 2, a movable collection surface is used as a net, and a non-woven web is collected by providing a zone for sucking air through the net, thereby turning the web and arranging the filaments. There has been proposed a method for preventing the disturbance. However, even in this method, if the air suction amount is increased, the air current is disturbed by sucking the air in the surrounding space. On the other hand, if the suction amount is small, the high-speed air flow by the air sucker cannot be sufficiently sucked. Therefore, it is difficult to completely prevent the non-woven web from being turned up and the filament arrangement from being disturbed only by setting the suction amount.

特公昭３７−４９９３号公報Japanese Patent Publication No. 37-4993 特許第２８３１４９９号公報Japanese Patent No. 2831499

本発明は、上記のごとき現状を鑑みてなされたものであり、連続糸条群を溶融紡出する紡糸口金を幅方向に複数配置した紡糸口金列を２列以上設置した場合においても、捕集面上での不織ウェブの乱れや糸条の配列の乱れが発生することを防止し、均整な不織布を得ることができる不織布製造装置および均整な不織布の製造方法を提供することを課題とするものである。   The present invention has been made in view of the current situation as described above. Even when two or more spinneret rows in which a plurality of spinnerets for melt spinning a continuous yarn group are arranged in the width direction are installed, the collection is performed. It is an object of the present invention to provide a nonwoven fabric manufacturing apparatus and a method for manufacturing a uniform nonwoven fabric that can prevent the occurrence of disorder of the nonwoven web on the surface and disorder of the arrangement of the yarns and obtain a uniform nonwoven fabric. Is.

本発明は、上記の課題を解決するものであり、連続糸条群を溶融紡出する紡糸口金を幅方向に多数配置した紡糸口金列を、機械方向を横切るように少なくとも２列有し、該紡糸口金から紡出した連続糸条群を該紡糸口金に対応して配設されたエアーサッカにより牽引・延伸・引取り、開繊装置により開繊した後、連続して移動式捕集面上に捕集・堆積させて不織ウェブを得る不織布製造装置であって、第１列目の紡糸口金列の紡糸口金から溶融紡出した連続糸条群が捕集される位置と、第２列目の紡糸口金列の紡糸口金から溶融紡出した連続糸条群が捕集される位置との間に帯電装置が設置されていることを特徴とする不織布製造装置を要旨とするものである。   The present invention solves the above-described problem, and has at least two spinneret rows in which a plurality of spinneret for melt spinning the continuous yarn group is arranged in the width direction so as to cross the machine direction, A group of continuous yarns spun from the spinneret is pulled, drawn, and pulled by an air sucker arranged corresponding to the spinneret, and opened by a fiber opening device. A non-woven fabric manufacturing apparatus for obtaining a nonwoven web by collecting and depositing on a position where a continuous yarn group melt-spun from a spinneret of a first spinneret row is collected, and a second row The gist of the nonwoven fabric manufacturing apparatus is characterized in that a charging device is installed between the continuous yarn group melt-spun from the spinneret of the spinneret row of the eye and the position where the continuous yarn group is collected.

また、本発明は、連続糸条群を溶融紡出する紡糸口金を幅方向に多数配置した紡糸口金列を、機械方向を横切るように少なくとも２列有し、該紡糸口金から紡出した連続糸条群を該紡糸口金に対応して配設されたエアーサッカにより牽引・延伸・引取り、開繊装置により開繊した後、連続して移動式捕集面上に捕集・堆積させて不織ウェブを得る不織布の製造方法であって、第１列目の紡糸口金列の紡糸口金より溶融紡出した連続糸条群を移動式捕集面上に捕集・堆積した第１の不織ウェブを、帯電装置により、捕集・堆積時の帯電状態とは逆の帯電状態にし、次いで、帯電装置により処理した第１の不織ウェブ上に、第２列目の紡糸口金列の紡糸口金から紡出した連続糸条群を捕集・堆積させることを特徴とする不織布の製造方法を要旨とするものである。   The present invention also includes a continuous yarn spun from the spinneret having at least two rows of spinneret rows in which a number of spinnerets for melt spinning the continuous yarn group are arranged in the width direction so as to cross the machine direction. The strips are pulled, stretched and pulled by an air sucker corresponding to the spinneret, opened by a fiber opening device, and then continuously collected and deposited on a mobile collection surface. A non-woven fabric manufacturing method for obtaining a woven web, in which a continuous yarn group melt-spun from a spinneret of a first row of spinneret rows is collected and deposited on a movable collection surface. The web is charged with a charging device opposite to the charged state during collection and deposition, and then the spinneret of the second row of spinneret rows is placed on the first nonwoven web processed by the charging device. A method for producing a nonwoven fabric characterized by collecting and depositing continuous yarns spun from Is shall.

本発明によれば、連続糸条群を溶融紡出する紡糸口金を幅方向に複数配置した紡糸口金列を少なくとも２列有し、該紡糸口金に対応して該紡糸口金から紡出された連続糸条群を牽引・延伸・引取るエアーサッカと連続糸条を開繊する開繊装置を配置し、その下方に連続糸条群を連続して捕集・堆積させて不織ウェブを形成する移動式捕集面を配置した不織布製造装置において、第１列目と第２列目との紡糸口金から溶融紡出された連続糸条群が該移動式捕集面に捕集される位置の間に帯電装置を配設しているため、該帯電装置により、第１列目の連続糸条群が開繊装置を通過し移動式捕集面上に捕集・堆積される時に帯びている電荷を中和しさらに逆に帯電させて、次に重ねられて堆積する第２列目の紡糸口金列よりの連続糸条群の帯電状態とは、逆の帯電状態とすることにより、不織ウェブが重ねられる際に同じ電荷に帯電していることによる静電気的な反発が生じないため、不織ウェブの乱れやフィラメント配列の乱れの発生を防止することができ、均整で地合の良好な不織布を得ることができる。   According to the present invention, there are at least two spinneret rows in which a plurality of spinnerets for melt spinning the continuous yarn group are arranged in the width direction, and a continuous spun from the spinneret corresponding to the spinneret. An air sucker that pulls, stretches, and pulls the yarn group and a spreader that opens the continuous yarn are arranged, and the continuous yarn group is continuously collected and deposited below it to form a nonwoven web. In the nonwoven fabric manufacturing apparatus in which the movable collection surface is arranged, the position of the position where the continuous yarn group melt-spun from the spinneret of the first row and the second row is collected on the movable collection surface. Since the charging device is disposed between them, the charging device is tinged when the continuous yarn group in the first row passes through the opening device and is collected and deposited on the movable collecting surface. Charge state of the continuous yarn group from the second spinneret row that is neutralized and further reversely charged, and then stacked and accumulated In the opposite charging state, when the nonwoven webs are stacked, the electrostatic charge due to the same charge is not generated, so that the nonwoven webs and the filament arrangement are disturbed. It is possible to obtain a non-woven fabric that is uniform and has good texture.

本発明の不織布の製造装置は、熱可塑性重合体からなる複数の連続糸条群を紡糸口金から溶融紡出し、紡出した糸条群を紡糸口金の下流に該口金に対応して配設されたエアーサッカにより牽引・延伸・引き取り、開繊装置により開繊した後、連続して移動式捕集面上に捕集・堆積して不織ウェブを得る、いわゆるスパンボンド法による不織ウェブを得る不織布の製造装置であって、連続糸条群を溶融紡出する紡糸口金を幅方向に複数配置した紡糸口金列を少なくとも２列有し、第１列目の紡糸口金から溶融紡出された連続糸条群が捕集される位置と、第２列目の紡糸口金から溶融紡出された連続糸条群が捕集される位置との間に帯電装置が設置されている。   The apparatus for producing a nonwoven fabric of the present invention includes a plurality of continuous yarn groups made of a thermoplastic polymer melt-spun from a spinneret, and the spun yarn group is disposed downstream of the spinneret corresponding to the spinneret. After pulling, stretching, and picking up with an air sucker and opening with a spreader, a nonwoven web is obtained by the so-called spunbond method, which is continuously collected and deposited on a movable collection surface. An apparatus for producing a nonwoven fabric having at least two spinneret rows in which a plurality of spinnerets for melt spinning a continuous yarn group are arranged in the width direction, and melt spun from a spinneret in the first row A charging device is installed between the position where the continuous yarn group is collected and the position where the continuous yarn group melt-spun from the spinneret in the second row is collected.

帯電装置としては、任意の電荷を発生させることができるものを用いればよく、公知の直流除電装置が好ましい。直流除電装置は、直流コロナ放電方式のものを用いることができる。直流除電装置は、電極針にプラスの直流電圧を印加した場合には電極針からプラスイオン（正電荷）を発生させることができ、一方、電極針にマイナスの直流電圧を印加した場合にはマイナスイオン（負電荷）を発生させる装置である。   As the charging device, a device capable of generating an arbitrary charge may be used, and a known DC neutralizing device is preferable. As the DC neutralizing device, a DC corona discharge type can be used. The DC static eliminator can generate positive ions (positive charge) from the electrode needle when a positive DC voltage is applied to the electrode needle, while it is negative when a negative DC voltage is applied to the electrode needle. It is a device that generates ions (negative charge).

不織布を製造する際、開繊装置を通過し移動式捕集面上に捕集・堆積される糸条群は、正または負の電荷を帯びている。本発明においては、第１列目の紡糸口金列より紡出された糸条群が捕集・堆積された第１の不織ウェブに、帯電装置により処理を行って、糸条群が帯びている電荷とは逆の電荷を与えることにより、糸条群の帯電電荷を中和し、さらに捕集・堆積時とは反対の電荷を帯びた状態にする。次いで、この第１の不織ウェブに、第２列目の紡糸口金列より紡出された糸条群が噴き付けられて堆積されるが、帯電装置により処理が施された第１の不織ウェブと、第２列目の紡糸口金列より紡出された糸条群とは、反対の電荷を帯びた状態であるため、第１の不織ウェブ上に第２列目の糸条群を噴きつける際に、静電的な反発が生にくく、むしろ、引き合うことによって、不織ウェブの乱れやめくれ、糸条の配列の乱れの発生を防止できる。   When manufacturing a nonwoven fabric, the yarn group which passes through the opening device and is collected and deposited on the movable collecting surface has a positive or negative charge. In the present invention, the first nonwoven web in which the yarn groups spun from the first spinneret row are collected and deposited is processed by a charging device, and the yarn groups are formed. By applying a charge opposite to the charged charge, the charged charge of the yarn group is neutralized, and further, the charged charge is opposite to that during collection and deposition. Next, the first nonwoven web spun from the second row of spinneret rows is sprayed and deposited, but the first nonwoven fabric treated by the charging device is deposited. Since the web and the yarn group spun from the second row of spinneret rows are in the opposite charged state, the second row of yarn group is placed on the first nonwoven web. When spraying, electrostatic repulsion is unlikely to occur. Rather, by attracting, it is possible to prevent the nonwoven web from being disturbed or turned up, and the yarn arrangement from being disturbed.

例えば、第１列目の紡糸口金からの連続糸条群（第１の糸条群）が正の電荷を帯びている場合は、この糸条が堆積してなる第１の不織ウェブに、帯電装置よりマイナスイオンを多量に発生させてマイナスイオンを与えることにより、第１の不織ウェブの帯電電荷を中和し、さらに負の電荷を帯びさせる。次いで、負の帯電状態にある第１の不織ウェブに、第２列目の紡糸口金からの正の電荷を帯びている連続糸条群（第２の糸条群）が噴きつけるが、負の電荷を帯びた第１の不織ウェブ上に、正の電荷を帯びた第２の糸条群を噴きつけるため、不織ウェブの乱れやめくれ、糸条の配列の乱れの発生を防止できる。   For example, when the continuous yarn group (first yarn group) from the spinneret in the first row has a positive charge, the first nonwoven web formed by depositing the yarn By generating a large amount of negative ions from the charging device to give negative ions, the charged charge of the first nonwoven web is neutralized and further charged with a negative charge. Next, a continuous yarn group (second yarn group) having a positive charge from the spinneret in the second row is sprayed on the first nonwoven web in a negatively charged state. The second yarn group having a positive charge is sprayed onto the first non-woven web having a negative charge, so that the non-woven web can be prevented from being disturbed or turned up, and the yarn arrangement can be prevented from being disturbed. .

次に、本発明の製造装置および製造方法について、図面に基づいて説明する。図１は、本発明の不織布製造装置の一実施態様を示す概略図であり、紡糸口金列が２列配置された実施態様を示す。図１において、第１列目の紡糸口金列（１）の紡糸口金から紡出された熱可塑性重合体からなる連続糸条群（２）は、紡糸口金列（１）の下流に紡糸口金列（１）に対応して配設されたエアサッカ（３）に導かれることにより牽引・延伸・引き取られ、さらに連続糸条群（２）は開繊装置（４）に導かれて開繊された後、一定速度で移動する移動式捕集面（５）に捕集・堆積されて第１の不織ウェブ６が形成される。一方、第２列目の紡糸口金列（９）の紡糸口金から紡出された熱可塑性重合体からなる連続糸条群（１０）も同様に紡糸口金列（９）の下流に紡糸口金列（９）に対応して配設されたエアサッカ（１１）に導かれることにより牽引・延伸・引き取られ、さらに連続糸条群（１０）は開繊装置（１２）に導かれて開繊された後、移動式捕集面５に捕集・堆積されている第１の不織ウェブの上に重ねて捕集・堆積されて目標目付の不織ウェブ（１３）が形成される。本発明においては、第１列目の連続糸条群（２）が移動式捕集面（５）に捕集される位置Ａと第２列目の連続糸条群（１０）が移動式捕集面（５）に捕集される位置Ｂとの間に直流除電装置（７）が機械方向を横切るように設置されている。連続糸条群が、開繊装置を通過し移動式捕集面上に捕集・堆積される時に負の電荷に帯電している場合には、直流除電装置の電極針からプラスイオンを発生させ、連続糸条群が正の電荷に帯電している場合には、電極針からマイナスイオンを発生させるように設定する。こうして第１列目の連続糸条群（２）が帯びている電荷を中和し、さらに反対の電荷を帯びさせることにより、次に重ねられる第２列目の連続糸条群（１０）が帯びている電荷とは逆の帯電状態となり、両ウェブ間の糸条が静電気的に反発しないようにする。図１において、第１列目の連続糸条群（２）により形成された不織ウェブ（６）が直流除電装置（７）の下を通過した後の不織ウェブ（８）は、直流除電装置（７）の下を通過する前の不織ウェブ（６）の帯電電荷とは反対の電荷を帯びるように直流除電装置（７）より発生させる電荷の種類およびその量を設定する。直流除電装置（７）と処理される不織ウェブ（６）との間隔は、５０〜８００ｍｍとするのが望ましく、さらには２００〜５００ｍｍとするのが望ましい。   Next, the manufacturing apparatus and manufacturing method of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view showing one embodiment of the nonwoven fabric production apparatus of the present invention, and shows an embodiment in which two spinneret rows are arranged. In FIG. 1, a continuous yarn group (2) made of a thermoplastic polymer spun from the spinneret of the first spinneret row (1) is placed downstream of the spinneret row (1). It was pulled, drawn and taken by being guided to the air sucker (3) arranged corresponding to (1), and the continuous yarn group (2) was further led to the opening device (4) and opened. Thereafter, the first nonwoven web 6 is formed by being collected and deposited on the movable collecting surface (5) moving at a constant speed. On the other hand, a continuous yarn group (10) made of a thermoplastic polymer spun from the spinneret of the second spinneret row (9) is similarly placed downstream of the spinneret row (9). After being pulled, drawn and taken by being guided to an air sucker (11) arranged corresponding to 9), the continuous yarn group (10) is further led to the opening device (12) and opened. The non-woven web (13) having a target weight is formed by being collected and deposited on the first non-woven web collected and deposited on the movable collecting surface 5. In the present invention, the position A where the continuous yarn group (2) in the first row is collected on the movable collecting surface (5) and the continuous yarn group (10) in the second row are collected by the movable catch. A direct current neutralizing device (7) is installed across the machine direction between the position B collected on the collecting surface (5). If the continuous yarn group is charged with a negative charge when it passes through the opening device and is collected and deposited on the movable collection surface, it generates positive ions from the electrode needle of the DC static elimination device. When the continuous yarn group is charged with a positive charge, it is set so that negative ions are generated from the electrode needle. In this way, by neutralizing the charge carried by the first row of continuous yarn groups (2) and further by applying the opposite charge, the second row of continuous yarn groups (10) to be stacked next is obtained. The charged state is opposite to the charged electric charge so that the yarn between the two webs does not electrostatically repel. In FIG. 1, the nonwoven web (8) after the nonwoven web (6) formed by the continuous yarn group (2) in the first row passes under the DC neutralization device (7) The type and amount of charge generated by the DC neutralization device (7) are set so as to have a charge opposite to that of the nonwoven web (6) before passing under the device (7). The distance between the direct current neutralizing device (7) and the nonwoven web (6) to be treated is preferably 50 to 800 mm, more preferably 200 to 500 mm.

本発明の不織布製造装置および不織布の製造方法において、採用できる熱可塑性重合体としては、繊維形成性を有するものであれば、特に限定されるものではなく、例えば、ポリエステル系重合体、ポリアミド系重合体、ポリオレフィン系重合体等の熱可塑性重合体を挙げることができる。   The thermoplastic polymer that can be employed in the nonwoven fabric production apparatus and the nonwoven fabric production method of the present invention is not particularly limited as long as it has fiber-forming properties, and examples thereof include polyester polymers and polyamide polymers. Examples thereof include thermoplastic polymers such as a polymer and a polyolefin polymer.

本発明においては、第１列目の不織ウェブに第２列目の連続糸条を噴きつけて目標目付けの不織ウェブを得、その後、熱カレンダー装置やニードルパンチ装置、バインダー樹脂付与装置を通過させて、形態安定化した不織布を得ることができる。   In the present invention, a continuous web in the second row is sprayed onto the nonwoven web in the first row to obtain a target nonwoven fabric web, and then a thermal calendar device, a needle punch device, and a binder resin application device are provided. By passing it through, it is possible to obtain a non-woven fabric having a stabilized shape.

次に本発明を実施例により具体的に説明する。
実施例
図１に示すごとき２列の紡糸口金列を有する不織布製造装置を用いて、極限粘度０．７０のポリエチレンテレフタレートのチップを通常の溶融紡糸装置を用いて温度２８５℃で溶融した後、孔径０．３５ｍｍ、孔数１９２の紡糸口金を通し、単孔吐出量１．７ｇ／分として紡出し、紡出した連続糸条群を冷却装置で冷却して、紡糸口金の下流２０００ｍｍの位置に該紡糸口金に対応して配設したエアーサッカにより速度５０００ｍ／分で牽引・延伸細化し、コロナ放電方式の開繊装置でマイナスに帯電させることで開繊した後、移動式捕集面に捕集・堆積させた第１列目の紡糸口金列による不織ウェブを、直流高圧安定化電源（春日電機株式会社製 ＫＦＶ５０−３ＡＶ＋−Ｓ）に電極バー（春日電機株式会社製 ＳＨＯＲ３２００）が配設された直流除電装置の電極針からプラスイオンを発生させることにより除電し、さらに糸条群をプラスに帯電させ、その上に第２列目の紡糸口金列による連続糸条群（マイナスに帯電）を噴きつけて、捕集・堆積させて、目付け３０ｇ／ｍ²の不織ウェブとし、その後、熱カレンダーを用いて熱圧接処理を行ない、単糸繊度３．３デシテックスの連続糸条からなる幅３２００ｍｍのポリエステルスパンボンド不織布を得た。 Next, the present invention will be specifically described with reference to examples.
Example A polyethylene terephthalate chip having an intrinsic viscosity of 0.70 was melted at a temperature of 285 ° C. using an ordinary melt spinning apparatus using a nonwoven fabric production apparatus having two rows of spinneret rows as shown in FIG. A spinneret having a diameter of 0.35 mm and a number of holes of 192 was passed through and spun at a single-hole discharge rate of 1.7 g / min. The air sucker arranged in correspondence with the spinneret pulls and stretches at a speed of 5000 m / min, and is opened by charging it negatively with a corona discharge type opening device. -The non-woven web formed by the first spinneret row deposited on the DC high-voltage stabilized power source (KFV50-3AV + -S made by Kasuga Electric Co., Ltd.) and the electrode bar (SHOR3200 made by Kasuga Electric Co., Ltd.) Static electricity is generated by generating positive ions from the electrode needle of the installed DC static elimination device, and the yarn group is charged positively. On top of that, a continuous yarn group (charged negatively) by the spinneret row in the second row. ), And collected and deposited into a non-woven web having a basis weight of 30 g / m ² , and then subjected to a heat-welding process using a thermal calendar, and consists of a continuous yarn having a single yarn fineness of 3.3 dtex. A polyester spunbond nonwoven fabric having a width of 3200 mm was obtained.

比較例
実施例の不織布製造装置において、直流除電装置を取り外して不織布を製造したこと以外は、実施例と同様にして比較例のポリエステルスパンボンド不織布を得た。 Comparative Example A polyester spunbond nonwoven fabric of a comparative example was obtained in the same manner as in the example except that the nonwoven fabric was produced by removing the direct current neutralization device in the nonwoven fabric production apparatus of the example.

実施例および比較例で得られたポリエステルスパンボンド不織布９０００ｍ巻、１０本を検反した結果、実施例は、比較例に比して外観斑が少なく地合が良好であり、不織ウェブのめくれによる欠点発生個所数が、比較例が全体で４６箇所であったのに対して実施例は１２箇所と少なかった。   As a result of inspection of 9000 m rolls of polyester spunbond nonwoven fabric obtained in Examples and Comparative Examples of 9000 m, the Examples have fewer appearance spots than the Comparative Examples and have good texture, and the nonwoven web is turned up. The number of occurrences of defects due to the number of comparative examples was 46 in total, while the number of examples was as small as 12 in the examples.

本発明の不織布製造装置の概略斜視図である。It is a schematic perspective view of the nonwoven fabric manufacturing apparatus of this invention.

符号の説明Explanation of symbols

１ 紡糸口金列
２ 連続糸条群
３ エアーサッカ
４ 開繊装置
５ 移動式捕集面
６ 不織ウェブ
７ 直流除電装置（帯電装置）
８ 不織ウェブ
９ 紡糸口金列
１０ 連続糸条群
１１ エアーサッカ
１２ 開繊装置
１３ 不織ウェブ
DESCRIPTION OF SYMBOLS 1 Spinneret row | line | column 2 Continuous yarn group 3 Air sucker 4 Opening device 5 Mobile collection surface 6 Non-woven web 7 DC static elimination device (charging device)
8 Nonwoven web 9 Spinneret row 10 Continuous yarn group 11 Air sucker 12 Opening device 13 Nonwoven web

Claims (3)

連続糸条群を溶融紡出する紡糸口金を幅方向に多数配置した紡糸口金列を、機械方向を横切るように少なくとも２列有し、該紡糸口金から紡出した連続糸条群を該紡糸口金に対応して配設されたエアーサッカにより牽引・延伸・引取り、開繊装置により開繊した後、連続して移動式捕集面上に捕集・堆積させて不織ウェブを得る不織布製造装置であって、第１列目の紡糸口金列の紡糸口金から溶融紡出した連続糸条群が捕集される位置と、第２列目の紡糸口金列の紡糸口金から溶融紡出した連続糸条群が捕集される位置との間に帯電装置が設置されていることを特徴とする不織布製造装置。 There are at least two rows of spinneret rows in which a number of spinnerets for melt spinning the continuous yarn groups are arranged in the width direction so as to cross the machine direction, and the continuous yarn groups spun from the spinneret are the spinneret. Fabrication of non-woven fabric to obtain a nonwoven web by pulling / drawing / drawing with an air sucker arranged corresponding to, opening with a fiber opening device, and continuously collecting / depositing on a mobile collecting surface A position at which a continuous yarn group melt-spun from the spinneret of the first row of spinneret rows is collected and a continuous melt-spun from the spinneret of the second row of spinneret rows A non-woven fabric manufacturing apparatus, wherein a charging device is installed between the yarn group and a position where the yarn group is collected. 帯電装置が、直流除電装置であることを特徴とする請求項１記載の不織布製造装置。 The nonwoven fabric manufacturing apparatus according to claim 1, wherein the charging device is a direct current static elimination device. 連続糸条群を溶融紡出する紡糸口金を幅方向に多数配置した紡糸口金列を、機械方向を横切るように少なくとも２列有し、該紡糸口金から紡出した連続糸条群を該紡糸口金に対応して配設されたエアーサッカにより牽引・延伸・引取り、開繊装置により開繊した後、連続して移動式捕集面上に捕集・堆積させて不織ウェブを得る不織布の製造方法であって、第１列目の紡糸口金列の紡糸口金より溶融紡出した連続糸条群を移動式捕集面上に捕集・堆積した第１の不織ウェブを、帯電装置により、捕集・堆積時の帯電状態とは逆の帯電状態にし、次いで、帯電装置により処理した第１の不織ウェブ上に、第２列目の紡糸口金列の紡糸口金から紡出した連続糸条群を捕集・堆積させることを特徴とする不織布の製造方法。 There are at least two rows of spinneret rows in which a number of spinnerets for melt spinning the continuous yarn groups are arranged in the width direction so as to cross the machine direction, and the continuous yarn groups spun from the spinneret are the spinneret. Of non-woven fabric to obtain non-woven web by pulling, stretching, and taking up by air sucker arranged corresponding to, opening by opening device, and continuously collecting and depositing on mobile collecting surface A first non-woven web obtained by collecting and depositing a continuous yarn group melt-spun from a spinneret of a first row of spinneret rows on a movable collection surface by a charging device. The continuous yarn spun from the spinneret of the spinneret row of the second row on the first nonwoven web processed by the charging device after being charged opposite to the charged state during collection / deposition A method for producing a nonwoven fabric, comprising collecting and depositing strips.