JP3249712B2 - Manufacturing method and manufacturing apparatus for absorber - Google Patents
Manufacturing method and manufacturing apparatus for absorberInfo
- Publication number
- JP3249712B2 JP3249712B2 JP14090595A JP14090595A JP3249712B2 JP 3249712 B2 JP3249712 B2 JP 3249712B2 JP 14090595 A JP14090595 A JP 14090595A JP 14090595 A JP14090595 A JP 14090595A JP 3249712 B2 JP3249712 B2 JP 3249712B2
- Authority
- JP
- Japan
- Prior art keywords
- pulp
- water
- absorber
- duct
- absorbing polymer
- 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.)
- Expired - Lifetime
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は、紙おむつや生理用ナプ
キン等の衛生品に用いられる吸収体の製造方法及びそれ
に好適な製造装置に関するものである。更に詳しくは、
パルプ中に吸水ポリマーが均一に分散保持され、吸水力
及び使用感に優れた吸収体の製造方法及びそれに好適な
製造装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an absorbent used for sanitary articles such as disposable diapers and sanitary napkins, and a manufacturing apparatus suitable for the method. More specifically,
TECHNICAL FIELD The present invention relates to a method for producing an absorbent body in which a water-absorbing polymer is uniformly dispersed and held in pulp, and has excellent water-absorbing power and usability, and a production apparatus suitable for the method.
【０００２】[0002]
【従来の技術】衛生品に用いられる吸収体は粉砕パルプ
等を積繊して製造されるが、その製造に際しては、例え
ば、複数の空気同伴ファイバー流を生じさせる装置（特
開昭６３−５４１６２号公報）、分散粒子を含むファイ
バウェブのエアレイ装置（特開昭６３−５９４６３号公
報）、複数の要素を有するエアレイドファイバウェブの
形成装置（特開昭６３−５９４６５号公報）等の装置が
用いられている。2. Description of the Related Art Absorbents used for sanitary goods are produced by laminating pulverized pulp or the like. In the production, for example, an apparatus for generating a plurality of air-entrained fiber streams (Japanese Patent Laid-Open No. 63-54162). Japanese Patent Application Laid-Open No. 63-59465), an air-laying apparatus for a fiber web containing dispersed particles (Japanese Patent Application Laid-Open No. 63-59463), and an apparatus for forming an air-laid fiber web having a plurality of elements (Japanese Patent Application Laid-Open No. 63-59465). Have been.
【０００３】[0003]
【発明が解決しようとする課題】上記のような従来の吸
収体製造装置においては、粉砕パルプと吸水ポリマーと
の混合方法は、特に、両原料の混合に際して粉砕パルプ
の搬送流に対して吸水ポリマーを投入する場合の投入方
向は、一般に、パルプ搬送流に逆らわない方向（図３に
おけるα2 が９０度未満）が採用されている。In the above-mentioned conventional absorber manufacturing apparatus, the method of mixing the ground pulp and the water-absorbing polymer is particularly difficult when mixing the two raw materials with respect to the water-absorbing polymer with respect to the conveying flow of the ground pulp. In general, a direction that does not go against the pulp conveyance flow (α 2 in FIG. 3 is less than 90 degrees) is adopted as the charging direction.
【０００４】しかし、このような投入方法を採用した場
合、図５に示すような吸収体が成形される。そして、こ
のようにして成形された吸収体は、パルプ中に吸水ポリ
マーが均一に分散しておらず、これらの二成分が吸収体
の厚み方向に別々の層を作った層分離状態で存在してい
るため、それに伴って次のような問題点を有している。However, when such a charging method is adopted, an absorber as shown in FIG. 5 is formed. In the absorbent thus formed, the water-absorbing polymer is not uniformly dispersed in the pulp, and these two components exist in a layer-separated state in which separate layers are formed in the thickness direction of the absorbent. Therefore, it has the following problems.
【０００５】まず、このような吸収体面に上方向から水
分が与えられた場合、吸収ポリマー層内の上層部分のみ
が膨潤してゲル化し、そのゲル化により同層内の下層部
分への水分の移動を阻害する、いわゆる「ブロッキン
グ」を起こしやすくなる。このような「ブロッキング」
が生じた場合、吸水ポリマーのうちの一部しか活用され
ないため、吸収体の吸収量が大きく低下してしまう。[0005] First, when water is applied to the absorber surface from above, only the upper layer portion in the absorbent polymer layer swells and gels, and the gelation causes the lower layer portion in the same layer to lose moisture. So-called “blocking” that hinders movement is likely to occur. Such "blocking"
Occurs, only a part of the water-absorbing polymer is used, so that the absorption amount of the absorber significantly decreases.
【０００６】次に、上述のとおり、吸水ポリマー層内部
において部分的なゲル化が生じている場合、吸収体に対
して外部から剪断力が加わると、ゲル化した吸水ポリマ
ー同士の摩擦が非常に小さくなることに起因して、パル
プ層とゲル化した吸水ポリマー層との間で滑りや剥離が
生じる。この問題は、パルプと吸水ポリマーとが均一に
分散されている吸収体に比べると格段に発現しやすくな
る。[0006] Next, as described above, when partial gelation occurs inside the water-absorbing polymer layer, the friction between the gelled water-absorbing polymers becomes extremely large when a shearing force is applied to the absorber from the outside. Due to the reduction in size, slipping or peeling occurs between the pulp layer and the gelled water-absorbing polymer layer. This problem is much more likely to occur as compared to an absorbent in which pulp and a water-absorbing polymer are uniformly dispersed.
【０００７】以上のとおり、成形工程前において粉砕パ
ルプと吸水ポリマーの混合が均一になされていないと、
得られる吸収体の厚み方向において二成分間で層分離が
生じ、種々の問題を発生させるに至る。そして、このよ
うな吸収体を用いた紙おむつ等の衛生品は、吸収力が低
下するだけでなく、ずれ変形が起こること等により使用
感も低下するので、吸収体として好ましくない。As described above, if the mixing of the ground pulp and the water-absorbing polymer is not uniform before the molding step,
Layer separation occurs between the two components in the thickness direction of the obtained absorber, which causes various problems. A sanitary article such as a disposable diaper using such an absorber is not preferable as an absorber because not only does the absorbency decrease, but also the usability decreases due to the occurrence of shear deformation.
【０００８】従って、本発明の目的は、パルプ中に吸収
ポリマーが均一に分散された吸収体、特に、紙おむつ、
生理用ナプキン等の衛生品用として適した吸収体を得る
ことができる吸収体の製造方法及びそれに好適な製造装
置を提供することにある。[0008] Accordingly, an object of the present invention is to provide an absorbent, in particular, a disposable diaper, in which an absorbent polymer is uniformly dispersed in pulp.
An object of the present invention is to provide a method of manufacturing an absorbent body that can obtain an absorbent body suitable for sanitary goods such as sanitary napkins, and a manufacturing apparatus suitable for the method.
【０００９】[0009]
【課題を解決するための手段】本発明者は、種々検討し
た結果、吸水ポリマーをある特定の方向からパルプ流に
合流させると、両者は均一に混合され、上記目的が達成
されることを知見した。本発明は、上記知見に基づいて
なされたもので、粉砕パルプを、空気によりパルプ搬送
流としてダクト内を搬送させると共に、空気により別に
搬送される吸収ポリマーを上記パルプ搬送流に上記ダク
ト内で合流させて、上記粉砕パルプと上記吸水ポリマー
との混合流を形成し、該混合流を吸収体成形工程に搬送
し、該吸収体成形工程で上記混合流を吸収体に成形する
吸収体の製造方法において、上記吸水ポリマーを含む空
気流を、上記パルプ搬送流の流れ方向に対して、直交す
る角度〜正対向する角度で対向するように上記パルプ搬
送流に合流させることを特徴とする吸収体の製造方法を
提供することにより上記目的を達成したものである。As a result of various studies, the present inventors have found that when a water-absorbing polymer is combined with a pulp stream from a specific direction, the two are uniformly mixed and the above object is achieved. did. The present invention has been made on the basis of the above-described findings, and while pulverized pulp is transported in a duct as a pulp transport stream by air, an absorbing polymer separately transported by air is joined to the pulp transport stream in the duct. And forming a mixed stream of the ground pulp and the water-absorbing polymer, conveying the mixed stream to an absorber forming step, and forming the mixed stream into an absorber in the absorber forming step. in the air stream containing the water-absorbing polymeric, with respect to the flow direction of the pulp transport stream, orthogonal angle-positive opposing absorber, characterized in that to join the said pulp conveyance flow so as to face at an angle The above object has been achieved by providing a manufacturing method.
【００１０】また、本発明は、上記本発明の吸収体の製
造方法の実施に好適な装置として、パルプ供給用の破砕
機と、空気による強制押出手段を備えた吸水ポリマー供
給管と、パルプ及び吸水ポリマーを混合し、空気流によ
り搬送するためのダクトと、吸収体を成形するための回
転積繊ドラムと、該回転積繊ドラムの内部を負圧に保持
し、該ダクト内部に空気流を生じさせるための吸引手段
とを備えており、該パルプ供給用の破砕機が該ダクトの
一端開口部に取り付けられ、該回転積繊ドラムがその外
周面において該ダクトの他端開口部に回転自在に圧接さ
れ、該吸水ポリマー供給管が該ダクト両端間の所望の位
置に取り付けられており、上記吸水ポリマー供給管が、
上記ダクト内を回転積繊ドラム方向へ搬送されるパルプ
搬送流の流れ方向に対して吸水ポリマーを含む空気流が
直交する角度〜正対向する角度で対向して合流するよう
にダクトに取り付けられていることを特徴とする吸収体
の製造装置を提供するものである。[0010] The present invention also provides a crusher for supplying pulp, a water-absorbing polymer supply pipe provided with forced air extrusion means, a pulp, A duct for mixing the water-absorbing polymer and transporting it by an air flow, a rotating fiber drum for forming an absorber, and the inside of the rotating fiber drum is maintained at a negative pressure, and an air flow is supplied to the inside of the duct. Suction means for generating the pulp; the crusher for supplying pulp is attached to one end opening of the duct; and the rotating laying drum is rotatable at the other end opening of the duct on the outer peripheral surface thereof. And the water-absorbing polymer supply pipe is attached at a desired position between both ends of the duct, and the water-absorbing polymer supply pipe is
Attached to the duct so that the air flow containing the water-absorbing polymer is opposed and merges at an angle orthogonal to the angle directly opposite to the flow direction of the pulp conveyance flow conveyed in the direction of the rotating layup drum in the duct. And a manufacturing apparatus for an absorber.
【００１１】以下、本発明について詳述する。本発明の
製造方法は、空気流により搬送される粉砕パルプと吸水
ポリマーを合流させ、これら二成分の混合流を形成し、
成形工程に移行させる従来技術において、粉砕パルプ搬
送流と吸水ポリマーを含む空気流（以下、「吸水ポリマ
ー流」という）とを対向するように合流させる方法、即
ち、パルプ搬送流の流れ方向に対する吸水ポリマー流の
合流角度（以下、単に「合流角度」という）を改良する
ものである。本発明における合流角度は、パルプと吸水
ポリマーとが均一に混合した吸収体を得るため、直交す
る角度〜正対向する角度であることが必要である。ま
た、本発明の目的を達成するため、この合流角度は１２
０〜１７０度であることが好ましく、特に１３５〜１７
０度であることが好ましい。Hereinafter, the present invention will be described in detail. The production method of the present invention combines the pulverized pulp and the water-absorbing polymer conveyed by an air flow to form a mixed flow of these two components,
In the prior art shifting to the molding process, air stream containing fluff pulp transport stream and water-absorbing polymeric (hereinafter, referred to as "water-absorbing polymer stream") method for combining so as to face the, i.e., water to the flow direction of the pulp transport stream This is to improve the merging angle of the polymer stream (hereinafter, simply referred to as "merging angle"). In order to obtain an absorber in which pulp and a water-absorbing polymer are uniformly mixed, the merging angle in the present invention needs to be an angle from orthogonal to an angle directly opposite. Also, in order to achieve the object of the present invention, this merging angle is 12
It is preferably 0 to 170 degrees, particularly 135 to 17 degrees.
Preferably it is 0 degrees.
【００１２】合流角度を上記の範囲に設定することによ
り、パルプ搬送流と吸水ポリマー流が合流する際に、吸
水ポリマー流がパルプ搬送流に局所的な乱れを生じさせ
る。この乱れにより、吸水ポリマーはダクト内部に広く
拡散され、その結果、パルプと吸水ポリマーとが均一に
分散された混合流が形成される。By setting the merging angle in the above range, when the pulp transport stream and the water-absorbing polymer stream merge, the water-absorbing polymer stream causes local turbulence in the pulp transport stream. Due to this turbulence, the water-absorbing polymer is widely diffused into the duct, and as a result, a mixed flow in which the pulp and the water-absorbing polymer are uniformly dispersed is formed.
【００１３】上記の製造方法を実施するために好適な製
造装置は、パルプ供給用の破砕機、空気による強制押出
手段を備えた吸水ポリマー供給管、パルプ及び吸水ポリ
マーを混合し、空気流により搬送するためのダクト、吸
収体を成形するための回転積繊ドラム及び回転積繊ドラ
ム内を負圧に保持するための吸引手段とを備えた従来技
術において、ダクトに対する吸水ポリマー供給管の取付
角度（以下、単に「取付角度」という）を改良するもの
である。即ち、本発明における取付角度は、ダクト内を
回転積繊ドラム方向へ搬送されるパルプ搬送流の流れ方
向に対して吸水ポリマー流が直交する角度〜正対向する
角度で合流する角度である。また、本発明の目的を達成
するため、この取付角度は１２０〜１７０度であること
が好ましく、特に１３５〜１７０度であることが好まし
い。取付角度はパルプ搬送流と吸水ポリマー流により規
定されるものであるが、空気流はダクト及び吸水ポリマ
ー供給管の内壁形状に応じて流れるため、前記内壁形状
とそれらの外壁形状とが一致するかぎりにおいては、そ
れぞれの外壁面を基準として取付角度を設定することが
できる。[0013] A production apparatus suitable for carrying out the above production method is a crusher for supplying pulp, a water-absorbing polymer supply pipe provided with means for forcibly extruding by air, a pulp and a water-absorbing polymer mixed, and conveyed by an air flow. In the prior art, which includes a duct for forming the absorbent, a rotary fiber drum for molding the absorber, and suction means for holding the inside of the rotary drum at a negative pressure, the mounting angle of the water-absorbing polymer supply pipe to the duct ( Hereinafter, simply referred to as “mounting angle”). That is, the attachment angle in the present invention is determined by the flow direction of the pulp conveyance flow conveyed in the duct in the direction of the roving drum.
This is the angle at which the water-absorbing polymer flow merges at an angle perpendicular to the direction of the water-absorbing polymer. Further, in order to achieve the object of the present invention, the mounting angle is preferably 120 to 170 degrees, and particularly preferably 135 to 170 degrees. The mounting angle is defined by the pulp conveying flow and the water-absorbing polymer flow, but the air flow flows according to the inner wall shapes of the duct and the water-absorbing polymer supply pipe, so that the inner wall shape and their outer wall shapes match each other. In, the mounting angle can be set based on each outer wall surface.
【００１４】取付角度を上記範囲内に設定することによ
り、パルプ搬送流と吸水ポリマー流の合流時においてパ
ルプ搬送流に局所的な乱れを生じさせ、パルプと吸水ポ
リマーが均一に混合された混合流を形成することができ
るため、本発明の製造方法に用いる装置として好適なも
のとなる。By setting the mounting angle within the above range, a local turbulence is caused in the pulp transport stream when the pulp transport stream and the water-absorbing polymer stream merge, and the mixed stream in which the pulp and the water-absorbing polymer are uniformly mixed is produced. Can be formed, which is suitable as an apparatus used in the production method of the present invention.
【００１５】[0015]
【実施例】以下、実施例及び比較例により本発明を更に
詳しく説明する。The present invention will be described below in more detail with reference to Examples and Comparative Examples.
【００１６】実施例１（吸収体の製造装置） 本発明の吸収体の製造装置について図面を参照しながら
具体的に説明する。図１は、本発明の吸収体の製造装置
の一実施例を本発明の製造方法の一実施例と共に示す斜
視図、図２は、図１における要部を拡大して示す断面
図、図３は、本発明の製造方法により得られた吸収体の
断面図である。製造装置１は、原料を供給するための破
砕機３及び吸水ポリマー供給管５と、原料を混合し、成
形工程まで搬送するためのダクト７と、吸収体を成形す
るための内部を負圧に保った回転積繊ドラム９と、回転
積繊ドラム９で形成された吸収体を受け取るためのバキ
ュームコンベア１１とを備えている。回転積繊ドラム９
からバキュームコンベア１１への吸収体の受け渡しは、
回転積繊ドラム９の一部に備わる圧縮空気による強制押
出手段（図示せず）の押出とバキュームコンベア１１の
吸引とによる。Embodiment 1 (Absorbent Manufacturing Apparatus) An absorbent manufacturing apparatus of the present invention will be specifically described with reference to the drawings. FIG. 1 is a perspective view showing one embodiment of a manufacturing apparatus of an absorber of the present invention together with one embodiment of a manufacturing method of the present invention. FIG. 2 is a cross-sectional view showing an enlarged main part in FIG. FIG. 2 is a cross-sectional view of an absorber obtained by the production method of the present invention. The production apparatus 1 has a crusher 3 and a water-absorbing polymer supply pipe 5 for supplying the raw material, a duct 7 for mixing the raw material and conveying the raw material to a molding process, and a negative pressure for the interior for molding the absorber. The rotating conveyor fiber drum 9 and the vacuum conveyor 11 for receiving the absorber formed by the rotating conveyor drum 9 are provided. Rotating fiber drum 9
The transfer of the absorber from the vacuum conveyor 11 to
This is based on the extrusion of forced extrusion means (not shown) by compressed air provided on a part of the rotary fiber drum 9 and the suction of the vacuum conveyor 11.
【００１７】破砕機３は、原料となるパルプ原皮を送り
込むための一対の送りローラー４を備えており、ダクト
７の一端開口部に取り付けられている。回転積繊ドラム
９は、その外周面１０において回転自在になるようにダ
クト７の他端開口部に圧接されている。また、回転積繊
ドラム９の外周面１０には、目的とする吸収体の形状に
応じた通気可能な金属メッシュ製の凹部が形成されてい
る。バキュームコンベア１１は、吸収体支持用の台紙１
５を介して、回転積繊ドラム９の一部に当接されてい
る。ダクト７の両端間における所望の位置には、吸水ポ
リマー供給管５が取り付けられており、この吸水ポリマ
ー供給管５には、図示していない圧縮空気による強制押
出手段を備えた吸水ポリマーシュート６が接続されてい
る。なお、図１中、１３は成形された吸収体を示す。The crusher 3 has a pair of feed rollers 4 for feeding the raw pulp skin as a raw material, and is attached to one end opening of a duct 7. The rotary fiber drum 9 is pressed against the other end opening of the duct 7 so as to be rotatable on the outer peripheral surface 10 thereof. In addition, a concave portion made of a metal mesh that can be ventilated according to the shape of the target absorber is formed on the outer peripheral surface 10 of the rotary fiber stack drum 9. The vacuum conveyor 11 is provided with a mount 1 for supporting the absorber.
5, it is in contact with a part of the rotary pile drum 9. At a desired position between both ends of the duct 7, a water-absorbing polymer supply pipe 5 is attached. The water-absorbing polymer supply pipe 5 is provided with a water-absorbing polymer chute 6 provided with a forced extrusion means (not shown) using compressed air. It is connected. In FIG. 1, reference numeral 13 denotes a molded absorber.
【００１８】ここで吸水ポリマー供給管５のダクト７に
対する取付角度は、ダクト７内を回転積繊ドラム９方向
へ搬送されるパルプ搬送流に対して吸水ポリマー流が直
交する角度〜正対向する角度で合流する角度である。こ
の取付角度を図２に基づいて説明すれば、吸水ポリマー
供給管５内部を流れる吸水ポリマー流（白ぬきの矢印で
表示）とダクト７内部を流れるパルプ搬送流（黒矢印で
表示）とがなす角度α 1 が９０度≦α1 ≦１８０度で表
される角度である。図２中における破線は、パルプ搬送
流と吸水ポリマー流が合流してパルプ搬送流に局所的な
乱れが生じ、吸水ポリマー流がダクト７内部に拡散して
いく様子を表したものである。Here, the duct 7 of the water-absorbing polymer supply pipe 5
Attachment angle is in the direction of the rotating pile drum 9 in the duct 7
The water-absorbing polymer flow is
It is the angle at which the angles intersect to the angle at which they meet directly. This
The mounting angle of the water-absorbing polymer will be described with reference to FIG.
Water-absorbing polymer flow flowing inside the supply pipe 5 (indicated by the white arrow
(Shown) and the pulp conveyance flow flowing inside the duct 7 (indicated by the black arrow)
Display) and the angle α 1 Is 90 degrees ≦ α1 ≤ 180 degrees
Angle. The dashed line in FIG.
Stream and water-absorbing polymer stream merge into a local pulp transport stream
Disturbance occurs, and the water-absorbing polymer flow diffuses into the duct 7
It is a representation of how it goes.
【００１９】比較例１ ダクトと吸水ポリマー供給管との取付角度を変えたほか
は、まったく実施例１と同一構成の製造装置を製作し
た。即ち、図４に示すとおり、ダクト２７（図１のダク
ト７に相当する）に対する吸水ポリマー供給管２５（図
１の吸水ポリマー供給管５に相当する）の取付角度を、
吸水ポリマー供給管２５内部を流れる吸水ポリマー流
（白ぬきの矢印で表示）とダクト２７内部を流れるパル
プ搬送流（黒矢印で表示）とがなす角度α2 がα2 ＜９
０度になるように設定した。図４中の破線は、合流後の
吸水ポリマー流の動きを表したものである。Comparative Example 1 A manufacturing apparatus having exactly the same configuration as in Example 1 was manufactured except that the mounting angle between the duct and the water-absorbing polymer supply pipe was changed. That is, as shown in FIG. 4, the mounting angle of the water-absorbing polymer supply pipe 25 (corresponding to the water-absorbing polymer supply pipe 5 in FIG. 1) with respect to the duct 27 (corresponding to the duct 7 in FIG.
The angle α 2 formed between the water-absorbing polymer flow (indicated by a white arrow) flowing inside the water-absorbing polymer supply pipe 25 and the pulp conveying flow (indicated by a black arrow) flowing inside the duct 27 is α 2 <9.
It was set to be 0 degrees. The dashed line in FIG. 4 represents the movement of the water-absorbing polymer stream after the merging.
【００２０】実施例２（吸収体の製造方法） 実施例１の製造装置を用いて、紙おむつ用の吸収体を製
造した。この製造方法を図１及び図２を参照しながら説
明する。まず、回転積繊ドラム９を図１中の矢印の方向
に一定速度で回転させると共に、回転積繊ドラム９に接
続された吸気ファン（図示せず）を稼働させ、回転積繊
ドラム９の内部を負圧に保持し、ダクト７の内部に一定
方向への空気流を生じさせた。この時の負圧レベルは、
原料となる粉砕パルプと吸水ポリマーを搬送できる空気
流を生じさせる程度であり、これを目安に原料の供給量
に応じて適宜調節した。次に、パルプ原皮１６を一対の
送りローラー４間に挿入し、連続的に破砕機３に送り、
所望の大きさに粉砕した。この粉砕パルプは連続的にダ
クト７に送られ、空気流により回転積繊ドラム９方向に
搬送されることになる。粉砕パルプのダクト７への供給
とほぼ同時に、吸水ポリマーシュート６から吸水ポリマ
ーを連続的に投入し、付設した圧縮空気による押出手段
により、吸水ポリマー供給管５を経て、吸水ポリマー流
として送り込んだ。その後ただちにダクト７内部で粉砕
パルプ搬送流と吸水ポリマー流は合流し、図２に示すよ
うに、吸水ポリマー流はダクト７内部に拡散し、粉砕パ
ルプと吸水ポリマーとが均一に混合された混合流が生
じ、回転積繊ドラム９に送られることになる。次に、前
記混合流を、回転積繊ドラム９の外周面上に形成された
所定形状の金属メッシュ製の凹部に吸引保持させ、吸収
体を形成させた。回転積繊ドラム９を回転させることに
より、連続的に吸収体１３を形成させ、形成させた吸収
体１３は順次回転移動させ、回転積繊ドラム９とバキュ
ームコンベア１１との当接面において台紙１５上に吸引
移動させた。この一連の操作を繰り返し、所望枚数の紙
おむつ用の吸収体１３を得た。なお、ここで台紙１５
は、ベルトコンベア等の適当な手段により連続的に長さ
方向に移動させた。Example 2 (Method of Manufacturing Absorber) Using the manufacturing apparatus of Example 1, an absorber for a disposable diaper was manufactured. This manufacturing method will be described with reference to FIGS. First, the rotating fabric drum 9 is rotated at a constant speed in the direction of the arrow in FIG. 1, and an intake fan (not shown) connected to the rotating fabric drum 9 is operated, so that the inside of the rotating fabric drum 9 is rotated. Was maintained at a negative pressure to generate an airflow in a certain direction inside the duct 7. The negative pressure level at this time is
An air flow capable of conveying the pulverized pulp as a raw material and the water-absorbing polymer was generated, and this was appropriately adjusted according to the supply amount of the raw material based on this. Next, the pulp raw leather 16 is inserted between the pair of feed rollers 4 and continuously sent to the crusher 3,
Crushed to desired size. The pulverized pulp is continuously sent to the duct 7 and is conveyed in the direction of the rotating fiber drum 9 by an air flow. Almost simultaneously with the supply of the pulverized pulp to the duct 7, the water-absorbing polymer was continuously introduced from the water-absorbing polymer chute 6 and fed as a water-absorbing polymer stream through the water-absorbing polymer supply pipe 5 by means of the attached compressed air. Immediately thereafter, the pulverized pulp transport stream and the water-absorbing polymer stream merge inside the duct 7, and as shown in FIG. 2, the water-absorbing polymer stream diffuses into the duct 7, and the mixed stream in which the milled pulp and the water-absorbing polymer are uniformly mixed Is generated and sent to the rotating pile drum 9. Next, the mixed flow was sucked and held in a concave portion made of a metal mesh having a predetermined shape formed on the outer peripheral surface of the rotary textile drum 9 to form an absorber. By rotating the roving drum 9, the absorber 13 is continuously formed, and the formed absorber 13 is sequentially rotated and moved, and the mounting paper 15 is formed on the contact surface between the rotatable drum 9 and the vacuum conveyor 11. It was moved upward by suction. This series of operations was repeated to obtain a desired number of absorbent articles 13 for disposable diapers. Here, the mount 15
Was continuously moved in the length direction by a suitable means such as a belt conveyor.
【００２１】こうして得られた吸収体１３を長さ方向に
切断し、その断面図（図３参照）を観察した。その結
果、吸収体１３は、その厚み方向においてパルプ１７中
に吸水ポリマー１８が均一に分散していることを目視に
より確認した。The absorber 13 thus obtained was cut in the longitudinal direction, and its cross-sectional view (see FIG. 3) was observed. As a result, the absorber 13 visually confirmed that the water-absorbing polymer 18 was uniformly dispersed in the pulp 17 in the thickness direction.
【００２２】比較例２ 比較例１の製造装置を用い、実施例１と同様にして吸収
体を製造した。こうして得られた吸収体を長さ方向に切
断し、その断面図（図５参照）を観察した。その結果、
吸収体３３においては、厚み方向の特定位置にのみ吸水
ポリマー３５が集中しており、パルプ３４と吸水ポリマ
ー３５の層に分離していた。Comparative Example 2 Using the production apparatus of Comparative Example 1, an absorber was produced in the same manner as in Example 1. The absorber thus obtained was cut in the length direction, and its cross-sectional view (see FIG. 5) was observed. as a result,
In the absorber 33, the water-absorbing polymer 35 was concentrated only at a specific position in the thickness direction, and was separated into layers of the pulp 34 and the water-absorbing polymer 35.
【００２３】本発明の吸収体の製造方法及び製造装置
は、上記した実施例により限定されるものではなく、ま
た、当業者が通常行う程度の変形例も本発明に含まれる
ものである。The method and apparatus for manufacturing an absorber of the present invention are not limited to the above-described embodiment, and the present invention includes modifications that are generally performed by those skilled in the art.
【００２４】[0024]
【発明の効果】本発明の製造方法及び製造装置において
は、パルプ搬送流と吸水ポリマー流との合流角度を直交
する角度〜正対向する角度に設定しているので、パルプ
と吸水ポリマーが均一に混合された混合流を形成するこ
とができる。このため、厚み方向においてパルプ中に吸
水ポリマーが均一に分散された（即ち、層分離が生じて
いない）吸収体を得ることができ、含有された吸水ポリ
マーの吸収力を十分に発揮させることができる。また、
この吸収体は、層分離が生じていないので、使用時にお
ける滑りや剥れ等の変形が生じることなく、使用感も良
好である。According to the manufacturing method and the manufacturing apparatus of the present invention, the pulp conveying stream and the water-absorbing polymer stream are set at a converging angle of a right angle to a directly opposing angle. A mixed mixed stream can be formed. For this reason, it is possible to obtain an absorber in which the water-absorbing polymer is uniformly dispersed in the pulp in the thickness direction (that is, no layer separation occurs), and it is possible to sufficiently exhibit the absorbing power of the contained water-absorbing polymer. it can. Also,
Since this absorber does not undergo layer separation, it does not undergo deformation such as slipping or peeling during use and has a good feeling in use.
【図１】本発明の吸収体の製造装置の一実施例を本発明
の製造方法の一実施例と共に示す斜視図である。FIG. 1 is a perspective view showing one embodiment of a manufacturing apparatus of an absorber of the present invention together with one embodiment of a manufacturing method of the present invention.
【図２】図１における要部を拡大して示す断面図であ
る。FIG. 2 is an enlarged sectional view showing a main part in FIG.
【図３】本発明の製造方法により得られた吸収体の断面
図である。FIG. 3 is a cross-sectional view of an absorber obtained by the manufacturing method of the present invention.
【図４】比較例を示すもので、図２に相当する断面図で
ある。FIG. 4 shows a comparative example, and is a cross-sectional view corresponding to FIG.
【図５】比較例の製造方法により得られた吸収体の断面
図である。FIG. 5 is a cross-sectional view of an absorber obtained by a manufacturing method of a comparative example.
１ 吸収体の製造装置 ３ 破砕機 ４ 送りローラー ５ 吸水ポリマー供給管 ６ 吸水ポリマーシュート ７ ダクト ９ 回転積繊ドラム １１ バキュームコンベア １３ 吸収体 １７ パルプ １８ 吸水ポリマー DESCRIPTION OF SYMBOLS 1 Absorber manufacturing apparatus 3 Crusher 4 Feed roller 5 Water-absorbing polymer supply pipe 6 Water-absorbing polymer chute 7 Duct 9 Rotating fiber drum 11 Vacuum conveyor 13 Absorber 17 Pulp 18 Water-absorbing polymer
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭63−59463（ＪＰ，Ａ) 特開 昭60−231853（ＪＰ，Ａ) 特開 平５−263348（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) D04H 1/00 - 18/00 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-59463 (JP, A) JP-A-60-231185 (JP, A) JP-A-5-263348 (JP, A) (58) Field (Int.Cl. 7 , DB name) D04H 1/00-18/00
Claims (3)
としてダクト内を搬送させると共に、空気により別に搬
送される吸収ポリマーを上記パルプ搬送流に上記ダクト
内で合流させて、上記粉砕パルプと上記吸水ポリマーと
の混合流を形成し、該混合流を吸収体成形工程に搬送
し、該吸収体成形工程で上記混合流を吸収体に成形する
吸収体の製造方法において、 上記吸水ポリマーを含む空気流を、上記パルプ搬送流の
流れ方向に対して、直交する角度〜正対向する角度で対
向するように上記パルプ搬送流に合流させることを特徴
とする吸収体の製造方法。The pulp is conveyed by air as a pulp conveying flow in a duct, and an absorbent polymer separately conveyed by air is joined to the pulp conveying flow in the duct to form the crushed pulp and the water absorption. Forming a mixed stream with a polymer, conveying the mixed stream to an absorber forming step, and forming the mixed stream into an absorber in the absorber forming step; the, of the pulp transport flow
The flow direction, pairs orthogonal angle-positive opposite angle
A method for producing an absorbent body, comprising joining the pulp transport stream so as to face the pulp transport stream.
記吸水ポリマーを含む空気流の合流角度が、１２０〜１The joining angle of the air flow containing the water-absorbing polymer is 120 to 1
７０度であることを特徴とする請求項１に記載の吸収体The absorber according to claim 1, wherein the angle is 70 degrees.
の製造方法。Manufacturing method.
施に用いられる吸収体の製造装置であって、 パルプ供給用の破砕機と、空気による強制押出手段を備
えた吸水ポリマー供給管と、パルプ及び吸水ポリマーを
混合し、空気流により搬送するためのダクトと、吸収体
を成形するための回転積繊ドラムと、該回転積繊ドラム
の内部を負圧に保持し、該ダクト内部に空気流を生じさ
せるための吸引手段とを備えており、該パルプ供給用の
破砕機が該ダクトの一端開口部に取り付けられ、該回転
積繊ドラムがその外周面において該ダクトの他端開口部
に回転自在に圧接され、該吸水ポリマー供給管が該ダク
ト両端間の所望の位置に取り付けられており、 上記吸水ポリマー供給管が、上記ダクト内を回転積繊ド
ラム方向へ搬送されるパルプ搬送流の流れ方向に対して
吸水ポリマーを含む空気流が直交する角度〜正対向する
角度で対向して合流するようにダクトに取り付けられて
いることを特徴とする吸収体の製造装置。3. The method for producing an absorber according to claim 1.
The absorbent body manufacturing apparatus used in the facilities, and crusher for pulp feed, a water-absorbing polymer feed tube equipped with a forced pushing means by air, a mixture of pulp and water absorption polymer, for conveying the air flow A duct, a rotating fabric drum for forming an absorber, and suction means for holding the inside of the rotating fabric drum at a negative pressure and generating an air flow inside the duct; A crusher for supplying pulp is attached to one end opening of the duct, the rotary laying drum is rotatably pressed against the other end opening of the duct on its outer peripheral surface, and the water-absorbing polymer supply pipe is connected to both ends of the duct. is attached to a desired position between, the water polymer supply pipe, an air stream containing water-absorbing polymeric with respect to the flow direction of the pulp transport stream which is conveyed in the duct to the rotary product fiber drum direction perpendicular An absorber manufacturing apparatus, wherein the absorber is attached to a duct so as to merge at an angle to a directly opposite angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14090595A JP3249712B2 (en) | 1995-06-07 | 1995-06-07 | Manufacturing method and manufacturing apparatus for absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14090595A JP3249712B2 (en) | 1995-06-07 | 1995-06-07 | Manufacturing method and manufacturing apparatus for absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08337954A JPH08337954A (en) | 1996-12-24 |
| JP3249712B2 true JP3249712B2 (en) | 2002-01-21 |
Family
ID=15279541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14090595A Expired - Lifetime JP3249712B2 (en) | 1995-06-07 | 1995-06-07 | Manufacturing method and manufacturing apparatus for absorber |
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| Country | Link |
|---|---|
| JP (1) | JP3249712B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106264872A (en) * | 2016-07-29 | 2017-01-04 | 泉州市汉威机械制造有限公司 | A kind of cotton core forming device |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4070661B2 (en) * | 2002-06-10 | 2008-04-02 | 花王株式会社 | Absorber manufacturing method |
| CN101405207B (en) | 2006-03-14 | 2013-07-17 | 巴斯夫欧洲公司 | Method for the pneumatic conveying of water-absorbent polymer particles |
| JP4711946B2 (en) * | 2006-12-22 | 2011-06-29 | 花王株式会社 | Absorber |
| JP4711945B2 (en) * | 2006-12-22 | 2011-06-29 | 花王株式会社 | Absorbent manufacturing method and manufacturing apparatus |
| JP5390575B2 (en) * | 2011-09-30 | 2014-01-15 | 大王製紙株式会社 | Absorber manufacturing equipment |
| JP5743282B2 (en) | 2012-07-10 | 2015-07-01 | 株式会社瑞光 | Absorber manufacturing equipment |
| JP5892883B2 (en) | 2012-07-10 | 2016-03-23 | 株式会社瑞光 | Absorber manufacturing equipment |
| JP6045302B2 (en) | 2012-10-31 | 2016-12-14 | ユニ・チャーム株式会社 | Method for manufacturing an absorbent for body fluid treatment |
| JP6377500B2 (en) * | 2014-11-14 | 2018-08-22 | 花王株式会社 | Fiber stacking equipment |
| JP6663893B2 (en) * | 2017-10-03 | 2020-03-13 | 花王株式会社 | Manufacturing method of absorber |
-
1995
- 1995-06-07 JP JP14090595A patent/JP3249712B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106264872A (en) * | 2016-07-29 | 2017-01-04 | 泉州市汉威机械制造有限公司 | A kind of cotton core forming device |
| CN106264872B (en) * | 2016-07-29 | 2019-07-02 | 泉州市汉威机械制造有限公司 | A kind of cotton core forming device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08337954A (en) | 1996-12-24 |
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