JP2591167Y2 - Absorber layer - Google Patents
Absorber layerInfo
- Publication number
- JP2591167Y2 JP2591167Y2 JP1993002153U JP215393U JP2591167Y2 JP 2591167 Y2 JP2591167 Y2 JP 2591167Y2 JP 1993002153 U JP1993002153 U JP 1993002153U JP 215393 U JP215393 U JP 215393U JP 2591167 Y2 JP2591167 Y2 JP 2591167Y2
- Authority
- JP
- Japan
- Prior art keywords
- absorber layer
- water
- absorbent
- liquid
- resin
- 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
Landscapes
- Orthopedics, Nursing, And Contraception (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、生理用ナプキンや失禁
パッドとなる吸液性積層体中に吸収体層として用いられ
る吸収体層に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorbent layer used as an absorbent layer in a liquid-absorbent laminate for use as a sanitary napkin or incontinence pad.
【０００２】[0002]
【従来の技術及び考案が解決しようとする課題】従来よ
りパルプや紙やパルプ不織布で吸水性樹脂粒子を挟持し
た吸収体や綿状の解繊パルプ層で吸水性樹脂粒子を挟持
した後、圧縮一体化した吸収体があるが、ウェットバッ
クが大きいことや、均質性や生産性が低いほか、吸液ス
ピードが一様なため吸収面側に近い吸水性樹脂粒子が吸
水して膨潤するので止水層となり、遠くの吸水性樹脂粒
子が有効に利用されていなかった。2. Description of the Related Art Conventionally, after absorbing water-absorbing resin particles with an absorbent body in which pulp, paper or pulp non-woven fabric sandwiches water-absorbing resin particles or a cotton-like fibrillated pulp layer, compression is performed. Although there is an integrated absorber, the wet back is large, the homogeneity and productivity are low, and the uniform liquid absorption speed causes the water-absorbent resin particles near the absorption surface to swell due to water absorption. A water layer was formed, and the distant water-absorbing resin particles were not effectively used.
【０００３】そこで、積層体として吸液スピードを部分
的に変えることに着目し、従来の吸液性積層体にはない
薄型で均質且つ生産性のよい独自の吸液性を発揮させる
ことを目的として二層以上の吸液性の異なる積層体も提
案された（実願平３−９８９０６）。しかしながら、積
層体中に用いられる吸収体層としては、吸水性樹脂がゲ
ルブロッキングし易く、吸収性に今一歩問題が残されて
いた。In view of the above, the present invention focuses on partially changing the liquid absorption speed of a laminated body, and aims to exhibit a unique, thin, uniform, and highly productive liquid absorbing property which cannot be obtained by a conventional liquid absorbing laminated body. A laminate having two or more layers having different liquid absorbing properties was also proposed (Japanese Utility Model Application No. 3-98906). However, as the absorber layer used in the laminate, the water-absorbing resin is easily gel-blocked, and there is still a problem in the absorbability.
【０００４】そこで、本考案においては、吸水性樹脂の
ゲルブロッキングを防止すると共に吸水速度の向上をよ
り一層促進できるような吸収体層を得ることを目的とし
ている。Accordingly, an object of the present invention is to provide an absorbent layer which can prevent gel blocking of a water-absorbing resin and can further promote the improvement of a water absorption rate.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
の本考案による吸収体層の構成としては、シート間に介
在する吸収体層を構成する粉末状吸水性樹脂が多価アル
コールと無機粉末を添着したものからなることを特徴と
している。なお、粉末状吸水性樹脂に対する添着量は多
価アルコールが０．５〜７重量％、無機粉末が０．１〜
３重量％が好ましい。In order to achieve the above object, the structure of the absorber layer according to the present invention is such that the powdery water-absorbing resin constituting the absorber layer interposed between the sheets comprises a polyhydric alcohol and an inorganic powder. Is characterized by being attached. The amount of the polyhydric alcohol to be impregnated with the powdery water-absorbing resin is 0.5 to 7% by weight, and the amount of the inorganic powder is 0.1 to 7% by weight.
3% by weight is preferred.
【０００６】[0006]
【作用】上記本考案の構成によると、粉末状吸水性樹脂
による多価アルコールの添着によって、粉末状吸水性樹
脂のゲルブロッキングを防止すると共に、積層体に用い
る場合に他のシートへの接着性を向上させ、カット面か
らの吸水性樹脂の脱落を防ぐのに役立つ。また、無機粉
末の添着によって粉末状吸水性樹脂を散粒するのに適
し、無機粉末間の液通過性を向上させ、吸収速度を向上
できる。According to the constitution of the present invention, gel blocking of the powdery water-absorbent resin is prevented by the addition of the polyhydric alcohol with the powdery water-absorbent resin, and the adhesiveness to other sheets when used in a laminate. And helps to prevent the water-absorbent resin from falling off the cut surface. Further, it is suitable for dispersing the powdery water-absorbent resin by impregnating the inorganic powder, thereby improving the liquid permeability between the inorganic powders and improving the absorption speed.
【０００７】[0007]
【実施例】次いで、本考案の実施例について図を参照し
ながら以下に例示する。図１は、本考案吸収体層の拡大
概要断面図であって、１０は粉末状吸水性樹脂、２０は
吸水性樹脂に添着された多価アルコール、３０は同じく
添着された無機粉末を示している。Next, an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an enlarged schematic cross-sectional view of the absorber layer of the present invention, in which 10 is a powdery water-absorbent resin, 20 is a polyhydric alcohol attached to the water-absorbent resin, and 30 is an inorganic powder similarly attached. I have.
【０００８】粉末状吸水性樹脂に対する添着量は多価ア
ルコールが０．５〜７重量％、無機粉末が０．１〜３重
量％が好ましい。また、粉末状吸水性樹脂の粒径が３０
〜１５０μｍで、無機粉末の粒径が１０μｍ以下が好ま
しい。上記多価アルコールとしては、グリセリン、プロ
ピレングリコール、１，３−ブタンジオール、ポリエチ
レングリコール４００〜２０００等が好ましく、無機粉
末としては、シリカ、合成ケイ素、炭酸マグネシウム、
ケイ酸マグネシウム、炭酸カルシウム、酸化チタン等が
好ましい。The amount of the polyhydric alcohol adhering to the powdery water-absorbing resin is preferably 0.5 to 7% by weight, and the amount of the inorganic powder is preferably 0.1 to 3% by weight. In addition, the particle size of the powdery water-absorbent resin is 30.
Preferably, the particle size of the inorganic powder is 10 μm or less. The polyhydric alcohol is preferably glycerin, propylene glycol, 1,3-butanediol, polyethylene glycol 400 to 2000, or the like. As the inorganic powder, silica, synthetic silicon, magnesium carbonate,
Magnesium silicate, calcium carbonate, titanium oxide and the like are preferred.
【０００９】そして図２は、本考案吸収体層を第２吸収
体層として積層体に用いた場合の概要断面図を示してい
る。図２のごとく積層体に第２吸収体層として用いた場
合の具体例を示すと、全体は５層構造であって、その５
層の構成要件の個々の具体的説明をする。第１吸収体層２ 粒径１５０〜１０００μｍの粉末状吸水性樹脂、散布量
は１５〜４０好ましくは２５〜３５ｇ／m2、ゲル強度が
２００以上（レオメーター法）第２吸収体層４ 本考案による吸収体層で、粒径３０〜１５０μｍの粉末
状吸水性樹脂、散布量は４０〜８０好ましくは５０〜７
０ｇ／m2、ゲル強度２００以上（レオメーター法）表面シート１ 長繊維パルプ単独もしくはレーヨン繊維が混合された、
目付け１６〜４０ｇ／m2、クレープ率１０〜３０％の紙
もしくはレーヨン紙中間シート３ レーヨン繊維が少なくとも５０重量％の親水性不織布か
らなる目付け１５〜４０好ましくは２０〜３０ｇ／m2の
不織布裏面シート５ 短繊維と長繊維が１：１の混合比からなるパルプ紙、目
付け１６〜４０好ましくは２０〜２７ｇ／m2、クレープ
率１０〜３０％また、表面シートは長繊維パルプかレー
ヨン繊維を使用した方がよく、他の素材では液の拡散が
不十分になり易い。FIG. 2 is a schematic sectional view showing a case where the absorber layer of the present invention is used as a second absorber layer in a laminate. As shown in FIG. 2, a specific example in a case where the laminate is used as a second absorber layer has a five-layer structure.
A specific description of the constituent requirements of the layers will be given. First absorber layer 2 Powdery water-absorbent resin having a particle size of 150 to 1000 μm, spraying amount is 15 to 40, preferably 25 to 35 g / m 2 , and gel strength is 200 or more (rheometric method) Four second absorber layers In the absorber layer according to the invention, a powdery water-absorbing resin having a particle size of 30 to 150 μm, and a spraying amount of 40 to 80, preferably 50 to 7
0 g / m 2 , gel strength 200 or more (rheometric method) Top sheet 1 Long fiber pulp alone or rayon fiber mixed,
Basis weight 16~40g / m 2, creping rate 10-30% of paper or rayon paper intermediate sheet 3 basis weight 15-40 preferably made of rayon fibers of at least 50 wt% of the hydrophilic nonwoven fabric 20 to 30 g / m 2 nonwoven backside Sheet 5 Pulp paper having a 1: 1 mixing ratio of short fibers and long fibers, a basis weight of 16 to 40, preferably 20 to 27 g / m 2 , a crepe ratio of 10 to 30%, and a top sheet of long fiber pulp or rayon fiber It is better to use it, and the diffusion of the liquid tends to be insufficient with other materials.
【００１０】第１吸収体層がこれ以上の散布量になると
吸液した際の膨潤により第２吸収体層に液が移行しなく
なる。又、これ以下だとウェットバックおよび総吸収量
が低下する。第２吸収体層がこれ以下の散布量だと吸収
量が十分でなく吸収速度も遅くなる。これ以上になると
コストの割に吸収速度は向上しない。When the amount of the first absorbent layer sprayed exceeds this, the liquid does not transfer to the second absorbent layer due to swelling when absorbing the liquid. On the other hand, if it is less than this, the wet back and the total absorption are reduced. If the amount of the second absorber layer applied is less than this, the amount of absorption is not sufficient, and the absorption speed becomes slow. Above this, the absorption rate does not improve for the cost.
【００１１】レーヨン不織布等の中間シートを存在させ
ることで液の拡散を表面シートと中間シートの２段階で
十分行ない、かつ中間シートの介在によって２タイプの
吸水性樹脂の特徴が十分発揮できるようにした。特に本
考案の吸収体層を第２吸収体層４として用いているの
で、多価アルコール２０の添着によって粉末樹脂のゲル
ブロッキングを防止すると共に裏面シート５及び中間シ
ート３への接着性を向上させ、カット面からの粉末の脱
落を防止することができ、さらに無機粉末の添着によっ
て液の粉末間の通過を向上させ、吸収速度の向上と樹脂
の有効利用を図る。The presence of an intermediate sheet such as a rayon non-woven fabric allows the liquid to be sufficiently diffused in two stages, a top sheet and an intermediate sheet, and the characteristics of the two types of water-absorbent resins can be fully exhibited by the interposition of the intermediate sheet. did. In particular, since the absorber layer of the present invention is used as the second absorber layer 4, the polyhydric alcohol 20 prevents the gel blocking of the powder resin and improves the adhesion to the back sheet 5 and the intermediate sheet 3. In addition, the powder can be prevented from falling off from the cut surface, and the passage of the liquid between the powders can be improved by the attachment of the inorganic powder, so that the absorption speed can be improved and the resin can be effectively used.
【００１２】一次トラップ性を高めるために表面シート
１にコットンやレーヨン不織布を使用してもかまわな
い。上記のごとき使用例によると、以下の具体的効果が
期待できる。第１吸収体層を吸収速度が遅くゲル強度、
粒径の大きい吸水性樹脂粒子で構成することにより、樹
脂の液吸収による膨潤で第２吸収体層に液が吸収される
前に経路を塞いでしまったり、ゲルに対する外圧による
変形によって経路を塞いでしまうことを防止して第２吸
収体層が有効に働くようにした。In order to enhance the primary trapping property, cotton or rayon non-woven fabric may be used for the topsheet 1. According to the above usage example, the following specific effects can be expected. The first absorbent layer has a low absorption rate and gel strength,
By comprising the water-absorbing resin particles having a large particle size, the path is closed before the liquid is absorbed by the second absorbent layer due to the swelling due to liquid absorption of the resin, or the path is closed by deformation due to external pressure on the gel. And the second absorber layer works effectively.
【００１３】第２吸収体層を吸収速度が速く、粒径の小
さい樹脂粒子で構成したので、液を素早く人体側から最
も遠い側に引き込みトラップできる。また、ゲル強度が
大きく、粒径の小さい樹脂を用いたのでシート平面に均
一に液を保持でき、外圧によるゲルブロッキングを防い
で吸水性樹脂を有効利用できる。中間シートとしてレー
ヨン系不織布を使用することで表面シートで拡散された
液が第１吸収体層から第２吸収体層に液が移行する途中
で再度拡散しシートの広い範囲にわたって吸水性樹脂を
利用できる。Since the second absorber layer is made of resin particles having a high absorption rate and a small particle size, the liquid can be quickly drawn to the farthest side from the human body and trapped. In addition, since a resin having a high gel strength and a small particle size is used, the liquid can be uniformly held on the sheet plane, and gel blocking due to external pressure can be prevented, so that the water-absorbing resin can be effectively used. By using a rayon-based nonwoven fabric as the intermediate sheet, the liquid diffused by the top sheet diffuses again while the liquid is transferred from the first absorbent layer to the second absorbent layer, and the water-absorbent resin is used over a wide area of the sheet. it can.
【００１４】シート状部材の積層による製造工程を採っ
ているので生産性が高い。生理用ナプキンや失禁パッド
に使用されている綿状の解繊パルプ量は紙おむつ程積層
しないので機械的な制約から生産速度を上げるとシート
への散布に均一性が出せない点を解消できた。綿状パル
プを使用していないので生産工程での粉塵発生がなく作
業環境が良い。Since the manufacturing process is performed by laminating the sheet-like members, the productivity is high. Since the amount of cotton-like fibrillated pulp used for sanitary napkins and incontinence pads is not laminated as much as disposable diapers, it was possible to eliminate the point that uniformity could not be obtained when the production speed was increased due to mechanical restrictions due to increased production speed. Since no cottony pulp is used, there is no dust in the production process and the working environment is good.
【００１５】[0015]
【考案の効果】以上のごとき本考案による吸収体層によ
ると、粉末状吸水性樹脂による多価アルコールの添着に
よって、粉末状吸水性樹脂のゲルブロッキングを防止す
ると共に、積層体に用いる場合に他のシートへの接着性
を向上させ、カット面からの吸水性樹脂の脱落を防ぐの
に役立つ。また、無機粉末の添着によって粉末状吸水性
樹脂を散粒するのに適し、無機粉末間の液通過性を向上
させ、吸収速度を向上できる。As described above, according to the absorbent layer according to the present invention, gel blocking of the powdery water-absorbent resin is prevented by impregnation of the polyhydric alcohol with the powdery water-absorbent resin, and when the absorbent is used for a laminate. It helps to improve the adhesiveness of the water-absorbent resin to the sheet and prevents the water-absorbing resin from falling off the cut surface. Further, it is suitable for dispersing the powdery water-absorbent resin by impregnating the inorganic powder, thereby improving the liquid permeability between the inorganic powders and improving the absorption speed.
【００１６】従って、生理用ナプキンや失禁パッドとな
る吸液性積層体中に吸収体層として用いるのに好適とな
る。Therefore, it is suitable for use as an absorber layer in a liquid-absorbent laminate that becomes a sanitary napkin or incontinence pad.
【図１】本考案吸収体層の概要拡大断面図である。FIG. 1 is a schematic enlarged sectional view of the absorber layer of the present invention.
【図２】本考案吸収体層の使用例を示す概要断面図であ
る。FIG. 2 is a schematic sectional view showing an example of use of the absorber layer of the present invention.
【図３】図２の使用例における液移行過程を示す概要断
面図である。FIG. 3 is a schematic sectional view showing a liquid transfer process in the usage example of FIG. 2;
１ 表面シート ２ 第１吸収体層 ３ 中間シート ４ 第２吸収体層 ５ 裏面シート １０ 粉末状吸水性樹脂 ２０ 多価アルコール ３０ 無機粉末 DESCRIPTION OF SYMBOLS 1 Top sheet 2 1st absorber layer 3 Intermediate sheet 4 2nd absorber layer 5 Back sheet 10 Powdery water absorbent resin 20 Polyhydric alcohol 30 Inorganic powder
Claims (2)
末状吸水性樹脂が多価アルコールと無機粉末を添着した
ものからなることを特徴とする吸収体層。1. An absorber layer wherein the powdery water-absorbing resin constituting the absorber layer interposed between the sheets is made by adhering a polyhydric alcohol and an inorganic powder.
ルコールが０．５〜７重量％、無機粉末が０．１〜３重
量％である請求項１記載の吸収体層。2. The absorbent layer according to claim 1, wherein the amount of the polyhydric alcohol is 0.5 to 7% by weight, and the amount of the inorganic powder is 0.1 to 3% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993002153U JP2591167Y2 (en) | 1993-01-29 | 1993-01-29 | Absorber layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993002153U JP2591167Y2 (en) | 1993-01-29 | 1993-01-29 | Absorber layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0658952U JPH0658952U (en) | 1994-08-16 |
| JP2591167Y2 true JP2591167Y2 (en) | 1999-02-24 |
Family
ID=11521415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1993002153U Expired - Lifetime JP2591167Y2 (en) | 1993-01-29 | 1993-01-29 | Absorber layer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2591167Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE60335456D1 (en) * | 2003-06-30 | 2011-02-03 | Procter & Gamble | Absorbent articles containing coated superabsorbent particles |
| ES2527139T3 (en) * | 2008-07-11 | 2015-01-21 | Sumitomo Seika Chemicals Co., Ltd. | Water absorbent sheet composition |
| KR101537137B1 (en) * | 2008-07-11 | 2015-07-15 | 스미또모 세이까 가부시키가이샤 | Water-absorbent sheet composition |
-
1993
- 1993-01-29 JP JP1993002153U patent/JP2591167Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0658952U (en) | 1994-08-16 |
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