JP2017189295A - Apparatus and method for manufacturing absorber - Google Patents

Apparatus and method for manufacturing absorber Download PDF

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JP2017189295A
JP2017189295A JP2016079572A JP2016079572A JP2017189295A JP 2017189295 A JP2017189295 A JP 2017189295A JP 2016079572 A JP2016079572 A JP 2016079572A JP 2016079572 A JP2016079572 A JP 2016079572A JP 2017189295 A JP2017189295 A JP 2017189295A
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water
absorbing polymer
supply pipe
air flow
absorbent body
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JP6551286B2 (en
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瀧山　吉宏
Yoshihiro Takiyama
吉宏 瀧山
敏弘 野田
Toshihiro Noda
敏弘 野田
大嗣 中山
Daishi Nakayama
大嗣 中山
竜祐 尾▲崎▼
Ryusuke Ozaki
竜祐 尾▲崎▼
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Oji Holdings Corp
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Oji Holdings Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing apparatus stably and uniformly distributing water absorptive polymer and capable of using a supply part with a different shape by attachably/detachably forming the supply part, and a manufacturing method.SOLUTION: An absorber manufacturing apparatus for manufacturing absorbers by conveying fiber materials and water absorptive polymer fed in a duct using an air flow and accumulating them in a molding die, includes: a water absorptive polymer supply pipe provided to project to the inside of the duct on a downstream side of the air flow with respect to a fiber material feed part, where a cross-sectional shape thereof crossing the projecting direction is a streamline shape; and a supply part connected to a tip end of the supply pipe and having a water absorptive polymer feed port extending in a direction crossing both the air flow and the projection direction of the supply pipe. This configuration can improve the manufacturing quality of the absorber with excellent texture (touch) and appropriate density.SELECTED DRAWING: Figure 2

Description

本発明は、吸収体の製造装置および製造方法に関する。   The present invention relates to an absorbent body manufacturing apparatus and manufacturing method.

吸収性物品（使い捨ておむつ、生理用ナプキン等）には、尿や血液等の体液を吸収するための吸収体が使用されており、一般に、吸収体には吸水性ポリマーが含まれている。   Absorbents for absorbing body fluids such as urine and blood are used for absorbent articles (disposable diapers, sanitary napkins, etc.), and generally, the absorbent contains a water-absorbing polymer.

吸水性ポリマーを含む吸収体を製造する方法として、気流を流すダクト内に繊維素材を供給するとともに、吸水性ポリマーを供給し、気流中に分散した繊維素材および吸水性ポリマーを吸引して成形型に堆積させるものがある。しかしながら、安定した品質の吸収体を得るためには、繊維素材を搬送する気流中に吸水性ポリマーが均一に分散され、繊維素材と混合して成形型に堆積していなければならない。   As a method of manufacturing an absorbent body containing a water-absorbing polymer, a fiber material is supplied into a duct through which an air current flows, a water-absorbing polymer is supplied, and the fiber material and the water-absorbing polymer dispersed in the air current are sucked to form a mold. There is something to deposit on. However, in order to obtain a stable quality absorbent body, the water-absorbing polymer must be uniformly dispersed in the airflow conveying the fiber material, mixed with the fiber material, and deposited on the mold.

そこで、例えば特許文献１には、吸水性ポリマー供給管に圧縮空気を導入するとともに、方向の異なる複数の流れを形成して吸水性ポリマーが導入されるようにする技術が開示されている。そして、特許文献１には、圧縮空気の流速の調整および複数の流れを形成するための分流プレートの角度調整を行うことで、吸収体の厚み方向における吸水性ポリマーの分布状態を制御することができると記載されている。   Thus, for example, Patent Document 1 discloses a technique in which compressed air is introduced into a water absorbent polymer supply pipe and a plurality of flows having different directions are formed so that the water absorbent polymer is introduced. In Patent Document 1, the distribution state of the water-absorbing polymer in the thickness direction of the absorber can be controlled by adjusting the flow rate of the compressed air and adjusting the angle of the flow dividing plate for forming a plurality of flows. It is stated that it can be done.

特開２００９−１１４５５５号公報JP 2009-114555 A

しかしながら、同文献で開示された構成では、圧縮空気の流速調整および分流プレートの角度調整などの煩雑な操作が必要であった。また、圧縮空気の流速を高めるほど良好な分散状態が得られる旨、記載されているが、その分、圧縮空気源の負担が増大する。さらに、圧縮空気の流速を高めすぎると、吸収体の密度が高くなり、吸収体の風合い（手触り）が硬いものになってしまう可能性も考えられる。   However, the configuration disclosed in this document requires complicated operations such as adjusting the flow rate of compressed air and adjusting the angle of the flow dividing plate. Moreover, although it has been described that a better dispersion state can be obtained as the flow rate of compressed air is increased, the burden on the compressed air source increases accordingly. Furthermore, if the flow rate of compressed air is increased too much, the density of the absorber increases and the texture (hand) of the absorber may become hard.

したがって、本発明の目的は安定して吸水性ポリマーを均一に分散させることができるようにすることを目的とする。   Accordingly, an object of the present invention is to make it possible to stably disperse the water-absorbing polymer stably.

本発明は、ダクト内に投入された繊維素材と吸水性ポリマーとを空気流を用いて搬送し、成形型に堆積させることによって、吸収体の製造を行う吸収体製造装置であって、前記繊維素材の投入部よりも前記空気流の下流側において、前記ダクト内に突出して設けられ、当該突出方向に交差する断面の形状が流線型をなしている前記吸水性ポリマーの供給管と、前記供給管の先端に接続され、前記空気流および前記供給管の突出方向の双方と交差する方向に延在する前記吸水性ポリマーの投入口を有する供給部と、を備えたことを特徴とする製造装置を提供する。   The present invention is an absorbent body manufacturing apparatus for manufacturing an absorbent body by transporting a fiber material and a water-absorbing polymer introduced into a duct using an air flow and depositing them on a mold, wherein the fiber The supply pipe for the water-absorbing polymer provided in the duct so as to protrude downstream from the material injection portion in the duct, and the cross-sectional shape intersecting the protruding direction is a streamlined shape, and the supply pipe And a supply part having an inlet for the water-absorbing polymer that extends in a direction intersecting both the air flow and the protruding direction of the supply pipe. provide.

本発明は、ダクト内に投入された繊維素材と吸水性ポリマーとを空気流を用いて搬送し、成形型に堆積させることによって、吸収体の製造を行う吸収体製造方法であって、前記繊維素材の投入部よりも前記空気流の下流側において、前記ダクト内に突出して設けられ、当該突出方向に交差する断面の形状が流線型をなしている前記吸水性ポリマーの供給管と、前記供給管の先端に接続され、前記空気流および前記供給管の突出方向の双方と交差する方向に延在する前記吸水性ポリマーの投入口を有する供給部と、を用い、前記供給管から前記供給部の前記投入口を介して前記空気流に前記吸水性ポリマーを投入する、ことを特徴とする吸収体製造方法を提供する。   The present invention is an absorbent body manufacturing method for manufacturing an absorbent body by transporting a fiber material and a water-absorbing polymer introduced into a duct using an air flow and depositing them on a mold, wherein the fiber The supply pipe for the water-absorbing polymer provided in the duct so as to protrude downstream from the material injection portion in the duct, and the cross-sectional shape intersecting the protruding direction is a streamlined shape, and the supply pipe And a supply part having an inlet for the water-absorbing polymer extending in a direction intersecting both the air flow and the protruding direction of the supply pipe, and from the supply pipe to the supply part There is provided an absorbent body manufacturing method, wherein the water-absorbing polymer is introduced into the air flow through the introduction port.

本発明は、前記供給管と前記供給部とが着脱可能であることを特徴とする製造装置を提供する。   The present invention provides a manufacturing apparatus characterized in that the supply pipe and the supply section are detachable.

本発明によれば、吸水性ポリマー供給管および供給部の形状を適切に定めたことにより、煩雑な操作を必要とすることなく、繊維素材を搬送する気流中に吸水性ポリマーを均一に分散させることができ、繊維素材と吸水性ポリマーの混合斑を抑えた、品質の高い吸収体の提供が可能となる。吸水性ポリマー供給部を着脱可能にすることにより、形状の異なる供給部を使用することができ、品質向上も可能となる。   According to the present invention, by appropriately determining the shape of the water-absorbing polymer supply pipe and the supply unit, the water-absorbing polymer is uniformly dispersed in the airflow conveying the fiber material without requiring a complicated operation. Therefore, it is possible to provide a high-quality absorbent body that suppresses mixed spots of the fiber material and the water-absorbing polymer. By making the water-absorbing polymer supply part detachable, supply parts having different shapes can be used, and quality can be improved.

本発明の第１実施形態に係る吸収体製造装置１の模式的な側断面図である。It is a typical sectional side view of the absorber manufacturing apparatus 1 which concerns on 1st Embodiment of this invention. 本発明の第１実施形態に係る吸水性ポリマー供給装置３０の斜視図である。1 is a perspective view of a water-absorbing polymer supply device 30 according to a first embodiment of the present invention. （ａ）および（ｂ）は、それぞれ、吸水性ポリマー供給管３１を円柱形状とした場合および流線形の断面形状を採用した場合の流れを説明する説明図である。(A) And (b) is explanatory drawing explaining the flow at the time of employ | adopting the streamlined cross-sectional shape when the water absorbing polymer supply pipe | tube 31 is made into a cylindrical shape, respectively. 本発明の第１実施形態に係る吸水性ポリマー６の拡散および混合状態の構成および動作を説明するための吸水性ポリマー供給装置３０の模式的断面図である。It is typical sectional drawing of the water absorbing polymer supply apparatus 30 for demonstrating the structure and operation | movement of the spreading | diffusion and mixing state of the water absorbing polymer 6 which concern on 1st Embodiment of this invention. （ａ）および（ｂ）は、それぞれ、本発明の第１実施形態に係る吸水性ポリマー供給部３２の平面図および断面図である。(A) And (b) is the top view and sectional drawing of the water absorbing polymer supply part 32 which concern on 1st Embodiment of this invention, respectively. （ａ）および（ｂ）は、それぞれ、本発明の第１実施形態に係る吸水性ポリマー供給装置３０の装着前および装着後の斜視図である。(A) And (b) is a perspective view before and after mounting of the water-absorbing polymer supply device 30 according to the first embodiment of the present invention, respectively. 本発明の第２実施形態に係る吸収体製造装置１の模式的な側断面図である。It is a typical sectional side view of the absorber manufacturing apparatus 1 which concerns on 2nd Embodiment of this invention. 本発明の第３実施形態に係る吸水性ポリマー供給装置３０の斜視図である。It is a perspective view of the water absorptive polymer supply apparatus 30 which concerns on 3rd Embodiment of this invention. （ａ）および（ｂ）は、それぞれ、本発明の第３実施形態に係る吸水性ポリマー供給部３２の平面図および底面図である。(A) And (b) is the top view and bottom view of the water-absorbing polymer supply part 32 which concern on 3rd Embodiment of this invention, respectively. （ａ）および（ｂ）は、それぞれ、本発明の第３実施形態に係る吸水性ポリマー供給部３２の正面図である。(A) And (b) is a front view of the water-absorbing polymer supply part 32 which concerns on 3rd Embodiment of this invention, respectively.

以下、図面を参照して本発明の実施形態を詳細に説明する。しかしながら、本発明はその実施形態のみに限らず、本発明の概念に帰属する他の吸収性物品に用いられる吸収体の製造装置および製造方法も包含するものである。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited only to the embodiment, but includes an apparatus and a method for manufacturing an absorbent body used for other absorbent articles belonging to the concept of the present invention.

（第１実施形態）
図１は本発明の第１実施形態に係る吸収体製造装置１の模式的な側断面図である。吸収体製造装置１は、回転ドラム１０に向かうように空気流２を導くダクト４を備え、そのダクト４内に繊維素材３および吸水性ポリマー６をそれぞれ投入するための繊維素材投入口２１および吸水性ポリマー供給装置３０が配設されている。投入された繊維素材３と吸水性ポリマー６は空気流２によって搬送される過程で分散および混合され、その混合物（吸収体材料）が、回転ドラム１０の周面に複数設けられた成形型１２に堆積することで、吸収体１３が形成される。回転ドラム１０は吸水性ポリマー投入口３３の延在方向と平行な方向に回転軸を有する円筒体を本体とし、成形型１２はその周面上に所定の間隔で複数設けられており、各成形型の底部には多数の吸気口が形成されている。 (First embodiment)
FIG. 1 is a schematic side sectional view of an absorbent body manufacturing apparatus 1 according to the first embodiment of the present invention. The absorbent body manufacturing apparatus 1 includes a duct 4 that guides an air flow 2 toward the rotary drum 10, and a fiber material inlet 21 and water absorption for feeding the fiber material 3 and the water-absorbing polymer 6 into the duct 4, respectively. A polymer supply device 30 is disposed. The input fiber material 3 and the water-absorbing polymer 6 are dispersed and mixed in the process of being conveyed by the air flow 2, and the mixture (absorber material) is applied to a molding die 12 provided on the peripheral surface of the rotary drum 10. By depositing, the absorber 13 is formed. The rotary drum 10 has a cylindrical body having a rotation axis in a direction parallel to the extending direction of the water-absorbing polymer inlet 33, and a plurality of molds 12 are provided on the peripheral surface at predetermined intervals. A number of air inlets are formed at the bottom of the mold.

ダクト４は、略矩形の断面を有する管状部材であり、回転ドラム１０の周面に複数設けられた成形型１２は、回転ドラム１０の方向１１への回転に伴って、ダクト４の排気口に対向する領域を通過して行く。そして、当該対向領域において、成形型１２には回転ドラム１０の内側から吸引力を作用させることで、ダクト４から排出される空気流が引き込まれ、成形型１２には吸収体材料が効率よく堆積してゆく。このようにして成形型１２上に形成された吸収体１３は、ダクト４の排気口との対向領域から外れた適宜の部位で、成形型１２から剥離される。   The duct 4 is a tubular member having a substantially rectangular cross section, and a plurality of forming dies 12 provided on the peripheral surface of the rotating drum 10 are provided at the exhaust port of the duct 4 as the rotating drum 10 rotates in the direction 11. Go through the opposite area. And in the said opposing area | region, the suction force is made to act on the shaping | molding die 12 from the inner side of the rotating drum 10, the airflow discharged | emitted from the duct 4 is drawn in, and absorber material accumulates efficiently in the shaping | molding die 12. I will do it. The absorber 13 formed on the mold 12 in this way is peeled from the mold 12 at an appropriate position that is out of the region facing the exhaust port of the duct 4.

なお、本実施形態の繊維素材３については、例えば、広葉樹および針葉樹木材から得られるサルファイトパルプ、アルカリパルプ、クラフトパルプ等の化学パルプや、サーモ・メカニカルパルプ、砕木パルプ等の機械パルプなどが挙げられる。   The fiber material 3 of the present embodiment includes, for example, chemical pulp such as sulfite pulp, alkali pulp, and kraft pulp obtained from hardwood and softwood wood, and mechanical pulp such as thermo-mechanical pulp and groundwood pulp. It is done.

また、吸水性ポリマー６、例えば高吸収性ポリマー（Ｓｕｐｅｒ Ａｂｓｏｒｂｅｎｔ Ｐｏｌｙｍｅｒ；ＳＡＰ）については、通常、水の場合は自重の１００倍〜１０００倍の吸水性保持力があるが、体液の場合は自重の１０倍〜２０倍以上の液吸水性を有する、例えば、デンプン系（デンプン−アクリル酸（塩）グラフト共重合体、デンプン−アクリル酸エチルグラフト共重合体のケン化物等）や、セルロース系（ナトリウムカルボキシメチルセルロースの架橋物等）や、合成樹脂系（アクリル酸（塩）重合体、ポリビニルアルコール−無水マレイン酸反応物の架橋物等）を用いることができる。   In addition, the water-absorbing polymer 6, such as a super absorbent polymer (SAP), usually has a water-absorbing holding power of 100 to 1000 times its own weight in the case of water, but its weight in the case of a body fluid. For example, starch-based (starch-acrylic acid (salt) graft copolymer, saponified starch-ethyl acrylate graft copolymer), cellulose-based (sodium) Carboxymethylcellulose cross-linked products) and synthetic resin systems (acrylic acid (salt) polymers, cross-linked products of polyvinyl alcohol-maleic anhydride reaction products) can be used.

図２は本発明の第１実施形態に係る吸水性ポリマー供給装置３０の斜視図、図３（ａ）および（ｂ）は、それぞれ、一般に用いられる中空円柱状の供給管および本実施形態に係る供給管を採用した場合の気流の流れを示す説明図である。吸水性ポリマー供給装置３０は、吸水性ポリマー供給管３１と、その先端に接続された吸水性ポリマー供給部３２とを有しており、吸水性ポリマー６は吸水性ポリマー供給管３１を通過して吸水性ポリマー供給部３２内に導入され、さらに吸水性ポリマー投入口３３からダクト４内へ投入される。本実施形態の吸水性ポリマー供給管３１は、空気流２の流れの方向と吸水性ポリマー供給管３１が突出する方向とに交差する方向の断面の形状が流線型をなしている。   FIG. 2 is a perspective view of the water-absorbing polymer supply device 30 according to the first embodiment of the present invention, and FIGS. 3A and 3B are respectively a hollow cylindrical supply pipe generally used and the present embodiment. It is explanatory drawing which shows the flow of the airflow at the time of employ | adopting a supply pipe | tube. The water-absorbing polymer supply device 30 has a water-absorbing polymer supply pipe 31 and a water-absorbing polymer supply part 32 connected to the tip thereof, and the water-absorbing polymer 6 passes through the water-absorbing polymer supply pipe 31. It is introduced into the water-absorbing polymer supply part 32 and further introduced into the duct 4 from the water-absorbing polymer inlet 33. In the water-absorbing polymer supply pipe 31 of this embodiment, the shape of the cross section in the direction intersecting the direction of the air flow 2 and the direction in which the water-absorbing polymer supply pipe 31 protrudes is streamlined.

図３（ａ）に示したように、円柱状をなした供給管３１’を吸水ポリマー供給部３２に接続した場合には、気流の方向に対し供給管３１’の後方には渦５が発生して繊維素材３を含んだ空気流２の流線が乱れることがある。すると、その部位において空気流２が円滑に流れない状態となって、吸水性ポリマー投入口３３から投入された吸水性ポリマー６の拡散および混合の状態が不完全もしくは不均一なものとなり、これは吸収体１３の品質に影響を及ぼすことになる。しかしながら、本実施形態では、図３（ｂ）に示したように、断面流線型の吸水性ポリマー供給管３１を採用したことにより、後流には渦５の発生が抑えられるため、吸水性ポリマー６の拡散および混合状態が良好なものとなる。   As shown in FIG. 3A, when the supply pipe 31 ′ having a cylindrical shape is connected to the water-absorbing polymer supply section 32, a vortex 5 is generated behind the supply pipe 31 ′ with respect to the direction of the airflow. Thus, the streamline of the air flow 2 including the fiber material 3 may be disturbed. Then, the air flow 2 does not flow smoothly at that portion, and the state of diffusion and mixing of the water absorbent polymer 6 introduced from the water absorbent polymer inlet 33 becomes incomplete or non-uniform, The quality of the absorber 13 will be affected. However, in the present embodiment, as shown in FIG. 3B, the adoption of the cross-sectional streamlined water-absorbing polymer supply pipe 31 suppresses the generation of the vortex 5 in the wake, so the water-absorbing polymer 6 The diffusion and mixing state of is improved.

以上に加え、本実施形態では、吸水性ポリマー６の拡散および混合状態をさらに良好にする構成を採用している。   In addition to the above, the present embodiment employs a configuration that further improves the diffusion and mixing state of the water-absorbing polymer 6.

図４は、その構成および動作を説明するための吸水性ポリマー供給装置３０の模式的断面図である。吸水性ポリマー供給部３２についても、図１のように側面視した場合において、上記と同様の流線型を呈するものとすることができる。しかし本実施形態では、図４に示すように、吸水性ポリマー供給部３２は、空気流２に対して翼形状をなしており、また、吸水性ポリマー投入口３３は、空気流２の方向および吸水性ポリマー供給管３１の突出方向との双方と交差する方向に開口している。繊維素材投入口２１から流れてくる気流は、吸水性ポリマー供給部３２の前方にて上下面に分流するが、上面側の気流３５のほうが、下面側の気流３６より流速が高いため、吸水性ポリマー投入口３３では上方に向かう流れないしは渦３７が発生する。従って、投入された吸水性ポリマー６は上方に巻き上げられ、繊維素材３を搬送している空気流に効率よく拡散することになる。   FIG. 4 is a schematic cross-sectional view of the water-absorbing polymer supply device 30 for explaining the configuration and operation thereof. The water-absorbing polymer supply unit 32 can also have a streamlined shape similar to the above when viewed from the side as shown in FIG. However, in the present embodiment, as shown in FIG. 4, the water-absorbing polymer supply unit 32 has a wing shape with respect to the air flow 2, and the water-absorbing polymer inlet 33 has the direction of the air flow 2 and The water-absorbing polymer supply pipe 31 is open in a direction intersecting with both the protruding direction. The airflow flowing from the fiber material input port 21 is divided into the upper and lower surfaces in front of the water-absorbing polymer supply unit 32, but the airflow 35 on the upper surface side has a higher flow velocity than the airflow 36 on the lower surface side, so that it absorbs water. An upward flow or vortex 37 is generated at the polymer inlet 33. Therefore, the introduced water-absorbing polymer 6 is wound upward and efficiently diffuses into the air flow carrying the fiber material 3.

以上のように、本発明の第１実施形態では、吸水性ポリマー供給装置３０上の各部位に応じて、それぞれ好ましい気流を発生させる形状を採用したことにより、吸収体材料の均一な混合状態を得て、吸収体１３の品質の向上に資するものとなる。   As described above, in the first embodiment of the present invention, by adopting a shape that generates a preferable air flow according to each part on the water-absorbing polymer supply device 30, a uniform mixed state of the absorber material is obtained. As a result, the quality of the absorber 13 is improved.

図５（ａ）および（ｂ）は、それぞれ、本発明の第１実施形態に係る吸水性ポリマー供給部３２の平面図および断面図である。吸水性ポリマー供給部３２内には吸水性ポリマー６を通過させるための通路を、吸水性ポリマー供給管３１との接続口３４から吸水性ポリマー投入口３３に向かうに従って漸増する幅を有したものとしている。このように、幅が漸増する通路とすることにより、吸水性ポリマー６の分散性を一層向上することができる。   5A and 5B are a plan view and a cross-sectional view, respectively, of the water-absorbing polymer supply unit 32 according to the first embodiment of the present invention. A passage for allowing the water-absorbing polymer 6 to pass through the water-absorbing polymer supply unit 32 has a width that gradually increases from the connection port 34 to the water-absorbing polymer supply pipe 31 toward the water-absorbing polymer input port 33. Yes. Thus, the dispersibility of the water-absorbing polymer 6 can be further improved by using a passage having a gradually increasing width.

ところで、ダクト４や、回転ドラム１０ないしは成形型１２の形状・寸法、あるいは吸水性ポリマー６の材質などの仕様に応じて、適切な吸水性ポリマー供給部３２を採用することが好ましい場合がある。   By the way, it may be preferable to employ an appropriate water-absorbing polymer supply section 32 according to the specifications such as the shape of the duct 4, the rotating drum 10 or the mold 12, or the material of the water-absorbing polymer 6.

図６（ａ）および（ｂ）は、それぞれ、本発明の第１実施形態に係る吸水性ポリマー供給装置３０の装着前および装着後の斜視図であり、吸水性ポリマー供給管３１に対し吸水性ポリマー供給部３２を分離可能に構成したものである。吸水性ポリマー供給装置３０は、吸水性ポリマー供給管３１と接続するために、吸水性ポリマー供給部３２は接続部３８を有し、留め具３９によって吸水性ポリマー供給管３１に着脱可能に固定されている。このように吸水性ポリマー供給部３２を着脱可能な構成とすることで、仕様に応じた好ましい形状のものを採用することができるようになる。   6A and 6B are perspective views of the water-absorbing polymer supply device 30 according to the first embodiment of the present invention before and after mounting, respectively, with respect to the water-absorbing polymer supply pipe 31. The polymer supply unit 32 is configured to be separable. In order to connect the water-absorbing polymer supply device 30 to the water-absorbing polymer supply pipe 31, the water-absorbing polymer supply part 32 has a connection part 38 and is detachably fixed to the water-absorbing polymer supply pipe 31 by a fastener 39. ing. By adopting a structure in which the water-absorbing polymer supply unit 32 is detachable as described above, a preferable shape according to the specification can be adopted.

ここで、接続部３８の接続口３４の外形寸法よりも吸水性ポリマー供給管３１の内形寸法を大きくし、覆い被さるように接続されるようにすれば、気流には影響を及ぼすことはない。さらに、留め具３９を皿ねじの形態とすれば、気流への影響を一層低減することができる。また、吸水性ポリマー供給部の材質は、着脱の繰り返しに耐えられ、また、気流の煽りに耐えられるよう、一定の強度があればよい。   Here, if the inner shape dimension of the water-absorbing polymer supply pipe 31 is made larger than the outer dimension of the connection port 34 of the connection portion 38 and is connected so as to cover it, the airflow is not affected. . Furthermore, if the fastener 39 is in the form of a countersunk screw, the influence on the airflow can be further reduced. In addition, the material of the water-absorbing polymer supply unit only needs to have a certain strength so that it can withstand repeated mounting and dismounting and can withstand the sway of airflow.

（第２実施形態）
続いて、図７を参照し、本発明の第２実施形態について説明する。図７は、本発明の第２実施形態に係る吸収体製造装置１の模式的な側断面図である。第１実施形態に加え、ダクト４内に吸水性ポリマー供給装置３０と回転ドラム１０の間に仕切り７を設け、吸水性ポリマー供給装置３０をもう１つ追加して配設する。吸水性ポリマー供給装置３０の１つはダクト内４の下流かつ仕切り７の下方に配置し、もう一方は、仕切り７の上方を吸水性ポリマー供給装置３０の気流が通過するような位置に配置する。気流を用いて繊維素材３と吸水性ポリマー６とを搬送し、成形型に堆積させる構成においては、ダクトの低部から巻き上がる繊維素材３を多く含んだ吸収体材料が先に堆積する傾向にある。本実施形態のように仕切り７を設けて上下２段の気流の経路を形成することで、成形型１２に繊維素材３もしくはこれを多く含んだ吸収体材料の層と、繊維素材３および吸水性ポリマー６が均一に混合した吸収性材料の層とを厚み方向に交互に堆積させた吸収体１３を得ることができ、吸収体１３の風合い（手触り）の向上に資することができる。 (Second Embodiment)
Subsequently, a second embodiment of the present invention will be described with reference to FIG. FIG. 7 is a schematic sectional side view of the absorbent body manufacturing apparatus 1 according to the second embodiment of the present invention. In addition to the first embodiment, a partition 7 is provided between the water absorbent polymer supply device 30 and the rotary drum 10 in the duct 4, and another water absorbent polymer supply device 30 is additionally provided. One of the water absorbent polymer supply devices 30 is disposed downstream of the duct 4 and below the partition 7, and the other is disposed above the partition 7 at a position where the air current of the water absorbent polymer supply device 30 passes. . In the configuration in which the fiber material 3 and the water-absorbing polymer 6 are transported using an air flow and deposited on the mold, the absorbent material containing a large amount of the fiber material 3 wound up from the lower part of the duct tends to be deposited first. is there. By providing the partition 7 as in the present embodiment to form the upper and lower airflow paths, the fiber material 3 or a layer of absorbent material containing a large amount of the material in the mold 12, the fiber material 3, and the water absorption property The absorbent body 13 in which the layers of the absorbent material in which the polymer 6 is uniformly mixed is alternately deposited in the thickness direction can be obtained, which can contribute to the improvement of the texture (hand) of the absorbent body 13.

（第３実施形態）
更に続いて、図８を参照し、本発明の第３実施形態について説明する。図８は、本発明の第３実施形態に係る吸水性ポリマー供給装置３０の斜視図、図９（ａ）および（ｂ）は、それぞれ、第３実施形態に係る吸水性ポリマー供給部３２の平面図および底面図、図１０（ａ）および（ｂ）は、それぞれ、第３実施形態に係る吸水性ポリマー供給部３２の正面図である。本発明の第３実施形態では、第１実施形態における吸収体製造装置１において、櫛状に形成された吸水性ポリマー投入口３３を備える吸水性ポリマー供給装置３０を設ける。 (Third embodiment)
Subsequently, a third embodiment of the present invention will be described with reference to FIG. FIG. 8 is a perspective view of a water-absorbing polymer supply device 30 according to the third embodiment of the present invention, and FIGS. 9A and 9B are plane views of the water-absorbing polymer supply unit 32 according to the third embodiment, respectively. FIGS. 10A and 10B are a front view of a water-absorbing polymer supply unit 32 according to the third embodiment. In the third embodiment of the present invention, in the absorbent body manufacturing apparatus 1 in the first embodiment, a water absorbent polymer supply device 30 including a water absorbent polymer inlet 33 formed in a comb shape is provided.

吸水性ポリマー投入口３３を櫛状に形成することで、吸水性ポリマー供給装置３０の下流側において、繊維素材３および吸水性ポリマー６の流れを幅方向に互い違いなものにすることができる。これにより、成形型１２上に吸水性ポリマー６のみが堆積した層が形成されることを確実に防ぐことができる。   By forming the water-absorbing polymer inlet 33 in a comb shape, the flow of the fiber material 3 and the water-absorbing polymer 6 can be alternated in the width direction on the downstream side of the water-absorbing polymer supply device 30. This can reliably prevent the formation of a layer in which only the water-absorbing polymer 6 is deposited on the mold 12.

さらに、図１０（ｂ）に示すように、吸水性ポリマー投入口３３を、位相をずらした櫛状とした形態では、吸水性ポリマー６の幅方向の均一性を保ちつつ、成形型１２上に堆積するタイミングをずらすことになり、その結果、吸収体１３の厚み方向における吸水性ポリマー６の拡散性を一層向上させることができる。   Furthermore, as shown in FIG. 10 (b), in the form in which the water-absorbing polymer inlet 33 has a comb-like shape shifted in phase, the water-absorbing polymer 6 is kept on the mold 12 while maintaining the uniformity in the width direction. As a result, the diffusibility of the water absorbent polymer 6 in the thickness direction of the absorber 13 can be further improved.

さらにまた、本発明の第３実施形態では、吸水性ポリマー供給部３２を側面視した場合の流線型が上下対称な形状であれ、上下非対称な形状であれ、吸水性ポリマー６の拡散および混合状態を良好なものにすることができる。   Furthermore, in the third embodiment of the present invention, the state of diffusion and mixing of the water absorbent polymer 6 is determined regardless of whether the streamline shape when the water absorbent polymer supply unit 32 is viewed from the side is a vertically symmetric shape or a vertically asymmetric shape. It can be made good.

（その他）
なお、本発明は、上述した実施形態に限られること無く、適宜の変形、修正および代替などが可能である。例えば、上述した実施形態では、繊維素材と吸水性ポリマーとからなる吸収体材料を回転ドラム側から吸引し、成形型に堆積させることで吸収体を形成するものとしたが、静電効果を利用して成形型への吸着を行わせるようにしてもよい。また、成形型を担持する手段としては、上述の回転ドラムに限らず、無端ベルト状のものであってもよい。 (Other)
The present invention is not limited to the above-described embodiments, and appropriate modifications, corrections, substitutions, and the like are possible. For example, in the embodiment described above, the absorber material is formed by sucking the absorber material composed of the fiber material and the water-absorbing polymer from the rotating drum side and depositing it on the mold, but the electrostatic effect is utilized. Then, adsorption to the mold may be performed. The means for supporting the mold is not limited to the rotating drum described above, and may be an endless belt.

１ 吸収体製造装置
２ 空気流
３ 繊維素材
４ ダクト
６ 吸水性ポリマー
７ 仕切り
１０ 回転ドラム
１２ 成形型
１３ 吸収体
２０ 繊維素材投入部
２１ 繊維素材投入口
３０ 吸水性ポリマー供給装置
３１、３１’吸水性ポリマー供給管
３２ 吸水性ポリマー供給部
３３ 吸水性ポリマー投入口 DESCRIPTION OF SYMBOLS 1 Absorber manufacturing apparatus 2 Air flow 3 Fiber material 4 Duct 6 Water-absorbing polymer 7 Partition 10 Rotating drum 12 Mold 13 Absorber 20 Fiber material input part 21 Fiber material input port 30 Water-absorbing polymer supply apparatus 31, 31 'water absorption Polymer supply pipe 32 Water-absorbing polymer supply section 33 Water-absorbing polymer inlet

Claims (7)

ダクト内に投入された繊維素材と吸水性ポリマーとを空気流を用いて搬送し、成形型に堆積させることによって、吸収体の製造を行う吸収体製造装置であって、
前記繊維素材の投入部よりも前記空気流の下流側において、前記ダクト内に突出して設けられ、当該突出方向に交差する断面の形状が流線型をなしている前記吸水性ポリマーの供給管と、
前記供給管の先端に接続され、前記空気流および前記供給管の突出方向の双方と交差する方向に延在する前記吸水性ポリマーの投入口を有する供給部と、
を備えたことを特徴とする吸収体製造装置。 An absorbent body manufacturing apparatus for manufacturing an absorbent body by transporting a fiber material and a water-absorbing polymer introduced into a duct using an air flow and depositing them on a mold,
The supply pipe of the water-absorbing polymer provided on the downstream side of the air flow with respect to the input portion of the fiber material, protruding in the duct and having a streamlined cross-sectional shape intersecting the protruding direction,
A supply portion connected to the tip of the supply pipe and having an inlet for the water-absorbing polymer extending in a direction intersecting both the air flow and the protruding direction of the supply pipe;
An absorbent body manufacturing apparatus comprising: 前記供給部は、前記空気流に対して流線形状をなしていることを特徴とする請求項１に記載の吸収体製造装置。   The absorbent body manufacturing apparatus according to claim 1, wherein the supply unit has a streamline shape with respect to the air flow. 前記流線形状は、翼形状をなしていることを特徴とする請求項２に記載の吸収体製造装置。   The absorbent body manufacturing apparatus according to claim 2, wherein the streamline shape is a wing shape. 前記投入口は、櫛状をなしていることを特徴とする請求項１ないし請求項３に記載の吸収体製造装置。   4. The absorbent body manufacturing apparatus according to claim 1, wherein the inlet has a comb shape. 前記供給部は、前記供給管の接続部分から前記投入口に向かうに従って内部空間の幅が漸増する前記吸水性ポリマーの供給通路を有することを特徴とする請求項１ないし請求項４の吸収体製造装置。   5. The absorbent body according to claim 1, wherein the supply unit includes a supply passage for the water-absorbing polymer, the width of the internal space gradually increasing from the connection portion of the supply pipe toward the charging port. apparatus. 前記供給管と前記供給部とが着脱可能であることを特徴とする請求項１ないし請求項５に記載の吸収体の製造装置。   6. The absorber manufacturing apparatus according to claim 1, wherein the supply pipe and the supply unit are detachable. ダクト内に投入された繊維素材と吸水性ポリマーとを空気流を用いて搬送し、成形型に堆積させることによって、吸収体の製造を行う吸収体製造方法であって、
前記繊維素材の投入部よりも前記空気流の下流側において前記ダクト内に突出して設けられ、当該突出方向に交差する断面の形状が流線型をなしている前記吸水性ポリマーの供給管と、
前記供給管の先端に接続され、前記空気流および前記供給管の突出方向の双方と交差する方向に延在する前記吸水性ポリマーの投入口を有する供給部と、を用い、
前記供給管から前記供給部の前記投入口を介して前記空気流に前記吸水性ポリマーを投入する、
ことを特徴とする吸収体製造方法。 An absorbent body manufacturing method for manufacturing an absorbent body by conveying a fiber material and a water-absorbing polymer introduced into a duct using an air flow and depositing them on a mold,
The supply pipe of the water-absorbing polymer provided in the duct on the downstream side of the air flow from the input portion of the fiber material, the shape of the cross section intersecting the protruding direction is streamlined,
A supply part connected to the tip of the supply pipe and having an inlet for the water-absorbing polymer extending in a direction crossing both the air flow and the protruding direction of the supply pipe,
Injecting the water-absorbing polymer into the air flow from the supply pipe through the input port of the supply unit;
The absorber manufacturing method characterized by the above-mentioned.
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JPH10510185A (en) * 1994-12-07 1998-10-06 マクニール−ピーピーシー・インコーポレーテツド Method of forming laminated absorbent structure
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JP2009112347A (en) * 2007-11-01 2009-05-28 Kao Corp Method and device for manufacturing absorber
JP2009219710A (en) * 2008-03-17 2009-10-01 Uni Charm Corp Device and method for manufacturing absorbent body
JP2010031398A (en) * 2008-07-25 2010-02-12 Univ Of Shiga Prefecture Electrostatic spinning method and spinning head for electrostatic spinning
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Publication number Priority date Publication date Assignee Title
JPH10510185A (en) * 1994-12-07 1998-10-06 マクニール−ピーピーシー・インコーポレーテツド Method of forming laminated absorbent structure
JP2006115999A (en) * 2004-10-20 2006-05-11 Daio Paper Corp Manufacturing apparatus for absorbent
JP2008132055A (en) * 2006-11-27 2008-06-12 Kao Corp Absorber
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JP2009219710A (en) * 2008-03-17 2009-10-01 Uni Charm Corp Device and method for manufacturing absorbent body
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