【発明の詳細な説明】 ［産業上の利用分野］ 本発明は体液吸収物品に関するものである。TECHNICAL FIELD The present invention relates to a body fluid absorbent article.
更に詳しくは、紙おむつや生理用ナプキン等の衛生用
品に好適に用いられ、優れた体液の吸収・保持能力を有
し使用者に爽快感を与える吸収特性の著しく向上した体
液吸収物品に関するものである。More specifically, the present invention relates to a body fluid absorbent article which is suitably used for hygiene products such as paper diapers and sanitary napkins, has an excellent ability to absorb and retain body fluids, and gives the user a refreshing feeling with significantly improved absorption characteristics. .
［従来の技術］ 近年、紙おむつや生理用ナプキン等の体液吸収物品の
吸収層にいわゆる吸水性ポリマーを使用したものが数多
く出現してきている。これらの吸水性ポリマーは、一般
に粉末状のため、シート状の綿状パルプや紙等の基材に
挟み込んだり或いは綿状パルプと混合するなどして、体
液吸収物品の吸収層中に固定して使用されている。しか
しながら、このようにして得た体液吸収物品では、吸水
性ポリマーの固定が不十分で体液吸収後に吸水性ポリマ
ーゲルが片寄ったり逸出したりして、漏れの原因となる
問題点があった。[Prior Art] In recent years, a large number of articles using a so-called water-absorbent polymer in the absorbent layer of body fluid absorbent articles such as paper diapers and sanitary napkins have appeared. Since these water-absorbent polymers are generally in powder form, they are fixed in the absorbent layer of the body fluid-absorbing article by being sandwiched between sheet-like substrates such as cotton pulp or paper or mixed with cotton-like pulp. It is used. However, the body fluid absorbent article thus obtained has a problem that immobilization of the water-absorbent polymer is insufficient and the water-absorbent polymer gel shifts or escapes after absorbing the body fluid, causing leakage.
また、最近では、これら粉末状の吸水性ポリマーやそ
れを用いた体液吸収物品に代わるものとして、吸水性ポ
リマーに転換し得る水溶性モノマーを基材に塗布し次い
で該モノマーの重合を行なって得られる吸水性複合体
（特開昭57−500546号および特開昭60−149609号）や、
この吸水性複合体を吸水層に用いた体液の吸収体（特開
昭62−170247号）が提案されている。しかしながら、こ
れらの吸水性複合体を用いた体液吸収物品は、体液吸収
後の吸水性ポリマーゲルの移動や逸出を防止できるて
も、吸水性複合体の吸収能力を充分に発揮したものとは
言えず、甚だ不経済で吸収特性に不満の残るものであっ
た。In recent years, as an alternative to these powdery water-absorbent polymers and body fluid-absorbing articles using the same, water-soluble monomers that can be converted into water-absorbent polymers are applied to a substrate and then the monomers are polymerized to obtain Water absorbent composites (JP-A-57-500546 and JP-A-60-149609),
A body fluid absorber using this water-absorbent composite in a water-absorbing layer (JP-A-62-170247) has been proposed. However, a body fluid absorbent article using these water-absorbent composites, even if it is possible to prevent migration or escape of the water-absorbent polymer gel after body fluid absorption, it is said that the absorbent capacity of the water-absorbent composite is sufficiently exhibited. Not to mention, it was extremely uneconomical, and the absorption characteristics remained unsatisfactory.
［発明が解決しようとする問題点］ 本発明は前記した問題点を解決するものである。した
がって、本発明の目的は、尿や経血等の体液を吸収した
後も吸水性ポリマーゲルの移動や逸出の心配がなく、し
かも体液に対して優れた吸収・保持能力を有し使用する
者に爽快感を与える体液吸収物品を提供することにあ
る。[Problems to be Solved by the Invention] The present invention solves the above-mentioned problems. Therefore, the object of the present invention is to use the absorbent polymer gel without any fear of migration or escape of the water-absorbent polymer gel even after absorbing body fluid such as urine or menstrual blood, and having excellent absorption / holding ability for body fluid. An object is to provide a body fluid absorbent article that gives a person a refreshing feeling.
［問題点を解決するための手段および作用］ 本発明者らは、このような事情に鑑み、鋭意研究を重
ねた結果、吸水性ポリマーが繊維ウエブに一体化してな
る吸水性複合体を体液吸収物品の吸収層中の特定位置に
配することにより、該吸水性複合体が本来有している体
液吸収能力を効果的に発揮させて前記目的を容易に達成
できることを見い出し、本発明に到達した。[Means and Actions for Solving Problems] As a result of intensive studies in view of such circumstances, the present inventors have found that a water-absorbent composite in which a water-absorbent polymer is integrated with a fiber web absorbs body fluid. It was found that by arranging at a specific position in the absorbent layer of an article, the above-mentioned object can be easily achieved by effectively exhibiting the body fluid absorbing ability originally possessed by the water-absorbent composite, and arrived at the present invention. .
すなわち、本発明は、重合により吸水性ポリマーを形
成するエチレン性不飽和モノマーまたはその水溶液を繊
維ウエブに施したのち該モノマーを重合させて得られる
吸水性複合体を吸収層に含有する体液吸収物品におい
て、吸水性複合体が吸収層の厚さの半分より体液吸収物
品の人体に接触する側にだけ位置することを特徴とする
体液吸収物品に関するものである。That is, the present invention provides a bodily fluid absorbent article containing an absorbent layer containing a water-absorbing complex obtained by subjecting a fibrous web to an ethylenically unsaturated monomer that forms a water-absorbing polymer by polymerization or an aqueous solution thereof and polymerizing the monomer. In the above, the water absorbent composite is located only on the side of the body fluid absorbent article that comes into contact with the human body with respect to half the thickness of the absorbent layer.
本発明に使用される吸水性複合体とは、吸水性ポリマ
ーが繊維ウエブに一体化してなるものであり、具体的に
は重合により吸水性ポリマーを形成するエチレン性不飽
和モノマーまたはその水溶液を繊維ウエブに含浸・噴霧
または塗布等の方法で施したのち該モノマーを重合させ
て得られるものである。The water-absorbing composite used in the present invention is one in which a water-absorbing polymer is integrated with a fiber web, and specifically, an ethylenically unsaturated monomer or an aqueous solution thereof which forms a water-absorbing polymer by polymerization is formed into a fiber. It is obtained by subjecting a web to a method such as impregnation, spraying or coating and then polymerizing the monomer.
ここでエチレン性不飽和モノマーとしては、吸水性ポ
リマーに転換可能な水溶性モノマーであれば特に限定さ
れない。このような水溶性のエチレン性不飽和モノマー
としては、例えば（メタ）アクリル酸やマレイン酸ある
いはそれらの塩等のカルボキシル基含有モノマー;2−ア
クリルアミド−２−メチルプロパンスルホン酸、２−
（メタ）アクリロイルオキシエタンスルホン酸、２−
（メタ）アクリロイルオキシプロパンスルホン酸、ビニ
ルスルホン酸あるいはそれらの塩等のスルホン酸基含有
モノマーなどを挙げることができる。中でも（メタ）ア
クリル酸またはその塩が好ましい。Here, the ethylenically unsaturated monomer is not particularly limited as long as it is a water-soluble monomer that can be converted into a water-absorbing polymer. Examples of such water-soluble ethylenically unsaturated monomers include carboxyl group-containing monomers such as (meth) acrylic acid, maleic acid or salts thereof; 2-acrylamido-2-methylpropanesulfonic acid, 2-
(Meth) acryloyloxyethanesulfonic acid, 2-
Examples thereof include sulfonic acid group-containing monomers such as (meth) acryloyloxypropane sulfonic acid, vinyl sulfonic acid and salts thereof. Among them, (meth) acrylic acid or a salt thereof is preferable.
また、これらのモノマーに架橋剤や粘度調整剤その他
の添加剤を加えることも可能である。It is also possible to add a crosslinking agent, a viscosity modifier, and other additives to these monomers.
架橋剤としては、例えばメチレンビスアクリルアミ
ド、エチレングリコールジ（メタ）アクリレート、ポリ
エチレングリコールジ（メタ）アクリレート、トリアリ
ルアミン、トリメチロールプロパントリアクリレート等
の多官能エチレン性不飽和モノマーや、エチレングリコ
ールジグリシジルエーテル、ポリエチレングリコールジ
グリシジルエーテル等のポリグリシジルエーテル；グリ
セリン、ペンタエリスリトール等のポリオール；エチレ
ンジアミン、ポリエチレンイミン等のポリアミン；塩化
カルシウム、硫酸アルミニウム等の多価金属塩等のカル
ボキシル基やスルホン酸基等の官能基と反応し得る２個
以上の官能基を有する化合物が好適に使用し得る。Examples of the cross-linking agent include polyfunctional ethylenically unsaturated monomers such as methylenebisacrylamide, ethylene glycol di (meth) acrylate, polyethylene glycol di (meth) acrylate, triallylamine, and trimethylolpropane triacrylate, and ethylene glycol diglycidyl ether. Polyglycidyl ethers such as polyethylene glycol diglycidyl ether; polyols such as glycerin and pentaerythritol; polyamines such as ethylenediamine and polyethyleneimine; functional groups such as carboxyl groups and sulfonic acid groups such as polyvalent metal salts such as calcium chloride and aluminum sulfate. A compound having two or more functional groups capable of reacting with a group can be preferably used.
また、該モノマーを繊維ウエブに施す際の付着効率を
高めるためにメチルセルロース、ヒドロキシエチルセル
ロース等の粘度調整剤を使用することも可能であり、粉
砕パルプや短繊維状の合成繊維等の各種フィラー、ベー
キングパウダー等の起泡剤などの使用も可能である。It is also possible to use a viscosity modifier such as methyl cellulose or hydroxyethyl cellulose in order to increase the adhesion efficiency when applying the monomer to a fiber web, various fillers such as crushed pulp and short fiber synthetic fibers, and baking. It is also possible to use a foaming agent such as powder.
上記のモノマーを繊維ウエブに施して付着せしめる方
法としては、モノマーあるいは該モノマーを水性液で希
釈して得たモノマー水溶液を繊維ウエブに含浸したり、
スクリーン印刷やグラビア印刷等の公知の印刷方法ある
いはロールコータ塗布やスプレー塗布等の公知の塗装方
法が可能である。As a method for applying the above-mentioned monomer to the fiber web to make it adhere, the fiber web is impregnated with a monomer or an aqueous monomer solution obtained by diluting the monomer with an aqueous liquid,
Known printing methods such as screen printing and gravure printing, or known coating methods such as roll coater application and spray application are possible.
繊維ウエブに付着したモノマーは、公知の手段により
重合させ、吸水性ポリマーに転換して吸水性複合体が得
られる。なお、このようなモノマーを重合して得られる
吸水性ポリマーは、これらモノマーの単独重合体あるい
は共重合体あるいはセルロース類へのグラフト重合体等
のいずれであっても良い。The monomer adhered to the fiber web is polymerized by a known means to be converted into a water-absorbent polymer to obtain a water-absorbent composite. The water-absorbing polymer obtained by polymerizing such monomers may be a homopolymer or copolymer of these monomers, or a graft polymer onto cellulose.
重合は、例えば熱、光、紫外線、放射線等で行なうこ
とができ、重合不活性な雰囲気下、例えば窒素雰囲気下
で行なうことが好ましい。一般に、熱での重合では水溶
性ラジカル開始剤を、光や紫外線では光や紫外線でラジ
カルを発生する水溶性の光重合開始剤をモノマー中に添
加しておくとよい。The polymerization can be carried out, for example, with heat, light, ultraviolet rays, radiation or the like, and is preferably carried out in an atmosphere inert to the polymerization, for example, in a nitrogen atmosphere. Generally, it is advisable to add a water-soluble radical initiator to the monomer in the case of thermal polymerization, and a water-soluble photopolymerization initiator that generates a radical in the case of light or ultraviolet rays to the monomers.
モノマー水溶液を用いて吸水性複合体を得る場合に
は、モノマーの重合後に必要により熱風、マイクロ比、
赤外線等の加熱手段により吸水性複合体に含有される水
分を乾燥除去してもよい。When a water-absorbent complex is obtained using an aqueous monomer solution, hot air, a micro ratio, and if necessary after polymerization of the monomer,
Water contained in the water-absorbent composite may be dried and removed by heating means such as infrared rays.
また、得られる吸水性複合体の吸水能を部分的に変化
させることを目的として、前記したカルボキシル基やス
ルホン酸基等の官能基と反応し得る２個以上の官能基を
有する化合物を乾燥時に部分的に添加しても良い。In addition, for the purpose of partially changing the water absorption capacity of the resulting water-absorbent composite, a compound having two or more functional groups capable of reacting with the functional groups such as the carboxyl group and the sulfonic acid group described above is dried at the time of drying. You may add partially.
本発明において吸水性複合体に用いられる繊維ウエブ
としては、例えばポリエステルやポリオレフィン等の合
成繊維あるいは綿やパルプ等のセルロース繊維からなる
紙、紐、不織布、織布等を挙げることができ、中でもポ
リエステル、ポリプロピレン、ポリエチレン等からなる
繊維ウエブが好ましい。また、点状、玉状、輪状、縞
状、碁盤目状等の任意の模様状にヒートエンボスの施さ
れた繊維ウエブを用いてもよい。Examples of the fibrous web used in the water-absorbent composite in the present invention include papers, strings, non-woven fabrics, woven fabrics and the like made of synthetic fibers such as polyester and polyolefin or cellulose fibers such as cotton and pulp, and among them, polyester. Fiber webs made of polypropylene, polypropylene, polyethylene, etc. are preferred. Moreover, you may use the fiber web heat-embossed in arbitrary patterns, such as a dot shape, a ball shape, a ring shape, a stripe shape, and a grid pattern.
本発明の体液吸収物品は、前記方法により得られた吸
水性複合体を吸収層の厚さの半分より体液吸収物品の人
体に接触する側にだけ位置せしめることを特徴とするも
のである。The body fluid absorbent article of the present invention is characterized in that the water-absorbent composite obtained by the above method is positioned only on the side of the body fluid absorbent article that comes into contact with the human body with respect to half the thickness of the absorbent layer.
吸収層とは、体液吸収物品において体液を吸収・保持
する機能を発揮する部分であり、例えば吸収紙、不織
布、綿状パルプ等の繊維質吸水材料を積層する等の常法
により得られ、また吸収層は必要によりエンボスやプレ
ス加工されていても良い。The absorbent layer is a part that exhibits the function of absorbing and retaining body fluid in a body fluid absorbing article, and is obtained by a conventional method such as laminating a fibrous water-absorbing material such as absorbent paper, nonwoven fabric, cotton pulp, or the like, and The absorbing layer may be embossed or pressed if necessary.
本発明では、吸収層の少なくとも一部に前記した吸水
性複合体が含有されており、しかも吸収層の厚さの半分
より体液吸収物品の人体に接触する側にだけ吸水性複合
体が配置されていなければならない。吸水性複合体が吸
収層の厚さの半分より体液吸収物品の人体に接触する側
以外に配置されていても、体液吸収物品の吸収特性を高
めることはできない。例えば吸水性複合体が吸収層の厚
さの半分より人体に接触する側に配置されず反対側に配
置されたものでは、本発明の体液吸収物品に比較して、
体液の吸収速度が著しく劣っており、また吸収した体液
の保持力にも劣っている。In the present invention, the water-absorbent composite is contained in at least a part of the absorbent layer, and the water-absorbent composite is disposed only on the side of the absorbent layer that is in contact with the human body than half the thickness of the absorbent layer. Must be Even if the water-absorbent composite is arranged on a portion other than half of the thickness of the absorbent layer on the side where the body fluid-absorbing article is in contact with the human body, the absorption characteristics of the body fluid-absorbing article cannot be enhanced. For example, the water-absorbing composite is arranged on the opposite side not arranged on the side in contact with the human body from half the thickness of the absorbent layer, as compared with the body fluid absorbent article of the present invention,
The absorption rate of body fluid is remarkably inferior, and the retentivity of absorbed body fluid is also inferior.
このようにして得られる吸収層は、そのままでも体液
吸収物品となりうるが、例えば吸収層を体液透過性の表
面材と体液不透過性の裏面材（防漏シート）との間に配
して組み合わせることによっても体液吸収物品とするこ
とができる。The absorbent layer thus obtained can be used as a body fluid absorbent article as it is. For example, the absorbent layer is arranged between a body fluid permeable front material and a body fluid impermeable back material (leak-proof sheet) and combined. By doing so, the body fluid absorbent article can be obtained.
また、本発明の体液吸収物品の吸収特性をさらに向上
させるため、粉末状の吸水性ポリマーを必要により吸収
層中に含有させてもよい。特に、粉末状の吸水性ポリマ
ーは、吸収層中の前記吸水性複合体の位置よりも人体に
接触しない側に配置するのが好ましい。In order to further improve the absorption characteristics of the body fluid absorbent article of the present invention, a powdery water-absorbent polymer may be contained in the absorbent layer, if necessary. In particular, the powdery water-absorbent polymer is preferably arranged on the side of the absorbent layer that does not come into contact with the human body with respect to the position of the water-absorbent composite.
［発明の効果］ 本発明の体液吸収物品は、吸水性複合体を吸収層の厚
さの半分より人体に接触する側にだけ配置するという簡
単な構成によって、以下の顕著な効果を奏するものであ
る。[Effect of the Invention] The body fluid absorbent article of the present invention has the following remarkable effects due to the simple configuration in which the water-absorbent composite is arranged only on the side in contact with the human body with respect to half the thickness of the absorbent layer. is there.
（イ）吸水性複合体に体液が効率的に吸収・保持される
ために、体液の吸収速度が大きく且つ体液等の加重下に
おいても表面への戻り量が極めて少なく、使用者に爽快
感を与えることができ、ムレやカブレを防止できる。(B) Since the body fluid is efficiently absorbed and retained in the water-absorbing complex, the body fluid has a high absorption rate and the amount of return to the surface is extremely small even under the load of body fluid, which gives the user a refreshing feeling. Can be given to prevent stuffiness and rash.
（ロ）体液吸収後においても吸水性ポリマーゲルの移動
や逸出が起こらず、また吸収性の形くずれが起こらず湿
潤時の強度が向上している。(B) The water-absorbent polymer gel does not move or escape even after absorbing body fluid, and the absorbent does not lose its shape, and the strength when wet is improved.
［実 施 例］ 参考例 １ 75モル％が水酸化ナトリウムによって中和された部分
中和アクリル酸水溶液（モノマー濃度40重量％）100重
量部に、2,2′−アゾビス−N,N′−ジメチレンイソブチ
ラミジン塩酸塩0.2重量部およびN,N′−メチレンビスア
クリルアミド0.005重量部を溶解した後、窒素ガスでモ
ノマー水溶液中の溶存酸素を除去した。[Examples] Reference Example 1 100 parts by weight of a partially neutralized acrylic acid aqueous solution (monomer concentration 40% by weight) in which 75 mol% was neutralized with sodium hydroxide was added to 2,2'-azobis-N, N'-. After dissolving 0.2 parts by weight of dimethyleneisobutyramidine hydrochloride and 0.005 parts by weight of N, N'-methylenebisacrylamide, dissolved oxygen was removed from the aqueous monomer solution with nitrogen gas.
このモノマー水溶液を秤量30g/m2のポリプロピレン製
不織布にスクリーン印刷し、モノマー水溶液の付着量25
0g/m2とした。This monomer aqueous solution was screen-printed on a polypropylene non-woven fabric weighing 30 g / m2 , and the amount of the monomer aqueous solution deposited was 25
It was set to 0 g / m2 .
次いで、このモノマー水溶液の付着した不織布を80℃
に加熱された鉄板の間に５分間保持してモノマーの重合
を行い、更に120℃の熱風乾燥器中で５分間乾燥し、吸
水性複合体（１）を得た。Next, the non-woven fabric to which this aqueous monomer solution has adhered is heated to 80 ° C.
The monomer was polymerized by holding it for 5 minutes between the heated iron plates, and further dried for 5 minutes in a hot air dryer at 120 ° C. to obtain a water absorbent composite (1).
得られた吸水性複合体（１）の吸水倍率を以下の方法
で測定したところ42g/gであった。The water absorption capacity of the resulting water absorbent composite (1) was 42 g / g as measured by the following method.
＜吸水倍率の測定法＞ 細かく裁断した吸水性複合体約0.5gを不織布製のティ
ーバッグ式袋（40mm×150mm）に入れ、0.9重量％塩化ナ
トリウム水溶液中に30分間浸漬した。その後ティーバッ
グ式袋を引き上げ５分間水切りを行った後、ティーバッ
グ式袋の重量を測定し、以下の式で吸水倍率を算出し
た。<Measurement Method of Water Absorption Capacity> About 0.5 g of the finely cut water-absorbent composite was placed in a non-woven tea bag bag (40 mm × 150 mm) and immersed in a 0.9 wt% sodium chloride aqueous solution for 30 minutes. After that, the tea bag type bag was pulled up and drained for 5 minutes, then the weight of the tea bag type bag was measured, and the water absorption ratio was calculated by the following formula.
参考例 ２ 参考例１で用いたのと同じモノマー水溶液に秤量45g/
m2のポリエステル製不織布を浸漬した後、モノマー水溶
液が全面に含浸した不織布をしぼってモノマー水溶液の
付着量を300g/m2とした。 Reference Example 2 The same monomer aqueous solution used in Reference Example 1 was weighed 45 g /
After immersing the m2 polyester non-woven fabric, the non-woven fabric impregnated with the monomer aqueous solution on the entire surface was squeezed to adjust the amount of the monomer aqueous solution deposited to 300 g / m2 .
次いで、このモノマー水溶液の付着した不織布を80℃
で５分間保持してモノマーの重合を行い、更に120℃の
熱風乾燥器中で５分間乾燥し、吸水性複合体（２）を得
た。Next, the non-woven fabric to which this aqueous monomer solution has adhered is heated to 80 ° C.
The mixture was kept for 5 minutes to polymerize the monomer, and further dried in a hot air dryer at 120 ° C. for 5 minutes to obtain a water-absorbent composite (2).
得られた吸水性複合体（２）の吸水倍率を測定したと
ころ43g/gであった。The water absorption capacity of the resulting water absorbent composite (2) was measured and found to be 43 g / g.
実施例 １ 体液不透過性の裏面材として大きさ10cm×10cmの正方
形状ポリエチレンフィルム（坪量180g/m2）の上に、綿
状パルプ3.5gを積層し、次いで参考例１で得た吸水性複
合体（１）を大きさ10cm×10cmの正方形状にカットして
１枚載置した。さらにその上に綿状パルプ1.5gを積層
し、最後に体液透過性の表面材として大きさ10cm×10cm
の正方形状のポリエステル不織布（坪量20g/m2）を載置
して、本発明の体液吸収物品（１）を得た。Example 1 3.5 g of cotton-like pulp was laminated on a 10 cm × 10 cm square polyethylene film (basis weight 180 g / m2 ) as a body fluid impermeable backing material, and then the water absorption obtained in Reference Example 1 The sexual composite (1) was cut into a square shape having a size of 10 cm × 10 cm, and one piece was placed. Furthermore, 1.5 g of cotton-like pulp is laminated on top of it, and finally it is 10 cm x 10 cm in size as a body fluid permeable surface material.
The square-shaped polyester non-woven fabric (basis weight: 20 g / m2 ) was placed to obtain the body fluid absorbing article (1) of the present invention.
このようにして得られた体液吸収物品（１）は、表面
材と裏面材の間に綿状パルプおよび吸水性複合体（１）
からなる吸収層が挟持されたものであり、吸収層の厚さ
は6mm、吸水性複合体（１）の位置は裏面材から厚さ方
向に4mm離れた所であった。The body fluid absorbing article (1) thus obtained has a cotton-like pulp and a water-absorbent composite (1) between the surface material and the back surface material.
The absorbent layer was made up of two layers, and the thickness of the absorbent layer was 6 mm, and the position of the water absorbent composite (1) was 4 mm away from the backing material in the thickness direction.
実施例 ２ 実施例１で用いたのと同じ裏面材のポリエチレンフィ
ルムの上に、綿状パルプ5.0gを積層し、次いで0.3gの吸
収紙、参考例１で得た１枚の吸水性複合体（１）および
0.3gの吸収紙をそれぞれ大きさ10cm×10cmの正方形状に
カットしてから吸水性複合体（１）が吸収紙の間に挟持
されるように順次載置し、最後に実施例１で用いたのと
同じ表面材のポリエステル不織布を載置して、本発明の
体液吸収物品（２）を得た。Example 2 5.0 g of cotton-like pulp was laminated on the polyethylene film of the same backing material as used in Example 1, followed by 0.3 g of absorbent paper, and one sheet of the water-absorbent composite obtained in Reference Example 1. (1) and
0.3 g of absorbent paper was cut into squares each having a size of 10 cm × 10 cm, and then the absorbent composite (1) was placed in order so as to be sandwiched between the absorbent papers, and finally used in Example 1. A polyester non-woven fabric having the same surface material as that used was placed to obtain a body fluid absorbing article (2) of the present invention.
このようにして得られた体液吸収物品（２）は、表面
材と裏面材の間に綿状パルプ、吸収紙および吸水性複合
体（１）からなる吸収層が挟持されたものであり、吸収
層の厚さは6.4mm、吸水性複合体（１）の位置は裏面材
から厚さ方向に5.6mm離れた所であった。The body fluid absorbent article (2) thus obtained has an absorbent layer composed of a cotton-like pulp, absorbent paper and a water-absorbent composite (1) sandwiched between a surface material and a back surface material. The layer thickness was 6.4 mm, and the position of the water-absorbent composite (1) was 5.6 mm away from the backing material in the thickness direction.
実施例 ３ 実施例１における吸水性複合体（１）に代えて参考例
２で得た吸水性複合体（２）を用いる以外は実施例１と
同様にして、体液吸収物品（３）を得た。なお、体液吸
収物品（３）における吸収層の厚さおよび吸水性複合体
（２）の位置は、体液吸収物品（１）のそれと同様であ
った。Example 3 A body fluid absorbent article (3) was obtained in the same manner as in Example 1 except that the water absorbent composite (2) obtained in Reference Example 2 was used instead of the water absorbent composite (1) in Example 1. It was The thickness of the absorbent layer and the position of the water absorbent composite (2) in the body fluid absorbent article (3) were the same as those in the body fluid absorbent article (1).
実施例 ４ 実施例２における吸水性複合体（１）に代えて参考例
２で得た吸水性複合体（２）を用いる以外は実施例２と
同様にして、体液吸収物品（４）を得た。なお、体液吸
収物品（４）における吸収層の厚さおよび吸水性複合体
（２）の位置は、体液吸収物品（２）のそれと同様であ
った。Example 4 A bodily fluid absorbent article (4) was obtained in the same manner as in Example 2 except that the water absorbent composite (2) obtained in Reference Example 2 was used instead of the water absorbent composite (1) in Example 2. It was The thickness of the absorbent layer and the position of the water absorbent composite (2) in the body fluid absorbent article (4) were the same as those in the body fluid absorbent article (2).
比較例 １ 実施例１で用いたのと同じ裏面材のポリエチレンフィ
ルムの上に、綿状パルプ1.5gを積載し、次いで参考例１
で得た吸水性複合体（１）を大きさ10cm×10cmの正方形
状にカットしてから１枚載置した。さらにその上に綿状
パルプ3.5gを積層し、最後に実施例１で用いたのと同じ
表面材のポリエステル不織布を載置して、比較用の比較
体液吸収物品（１）を得た。Comparative Example 1 1.5 g of cotton-like pulp was loaded on a polyethylene film having the same backing material as that used in Example 1, and then Reference Example 1
The water-absorbent composite (1) obtained in 1. was cut into a square shape having a size of 10 cm × 10 cm, and one piece was placed. Furthermore, 3.5 g of cotton-like pulp was laminated thereon, and finally a polyester nonwoven fabric having the same surface material as that used in Example 1 was placed to obtain a comparative body fluid absorbent article (1) for comparison.
このようにして得られた比較体液吸収物品（１）は、
表面材と裏面材の間に綿状パルプおよび吸水性複合体
（１）からなる吸収層が挟持されたものであり、吸収層
の厚さは6mm、吸水性複合体（１）の位置は裏面材から
厚さ方向に2mm離れた所であった。The comparative body fluid absorbent article (1) thus obtained is
An absorbent layer composed of a cotton-like pulp and a water-absorbent composite (1) is sandwiched between a surface material and a back material, the thickness of the absorbent layer is 6 mm, and the position of the water-absorbent composite (1) is on the back surface. It was 2 mm away from the material in the thickness direction.
比較例 ２ 実施例１で用いたのと同じ裏面材のポリエチレンフィ
ルムの上に、0.3gの吸収紙、参考例１で得た１枚の吸水
性複合体（１）および0.3gの吸収紙をそれぞれ大きさ10
cm×10cmの正方形状にカットしてから吸水性複合体
（１）が吸収紙の間に挟持されるように順次載置し、次
いでこの上に綿状パルプ5.0gを積層し、最後に実施例１
で用いたのと同じ表面材のポリエステル不織布を載置し
て、比較用の比較体液吸収物品（２）を得た。Comparative Example 2 0.3 g of absorbent paper, one sheet of the water-absorbent composite (1) obtained in Reference Example 1 and 0.3 g of absorbent paper were placed on the same polyethylene film as the backing material used in Example 1. Each size 10
Cut into squares of 10 cm x 10 cm, then place the absorbent composite (1) in sequence so that it is sandwiched between absorbent paper, then stack 5.0 g of cotton-like pulp on top of this, and finally carry out Example 1
The comparative nonwoven fabric absorbent article (2) for comparison was placed by placing the polyester non-woven fabric having the same surface material as that used in (1).
このようにして得られた比較体液吸収物品（２）は、
表面材と裏面材の間に綿状パルプ、吸水紙および吸水性
複合体（１）からなる吸収層が挟持されたものであり、
吸収層の厚さは6.4mm、吸水性複合体（１）の位置は裏
面材から厚さ方向に0.8mm離れた所であった。The comparative body fluid absorbent article (2) thus obtained is
An absorbent layer composed of a cotton-like pulp, a water-absorbent paper and a water-absorbent composite (1) is sandwiched between a surface material and a back surface material,
The thickness of the absorbent layer was 6.4 mm, and the position of the water absorbent composite (1) was 0.8 mm away from the back material in the thickness direction.
比較例 ３ 比較例１における吸水性複合体（１）に代えて参考例
２で得た吸水性複合体（２）を用いる以外は比較例１と
同様にして、比較体液吸収物品（３）を得た。なお、比
較体液吸収物品（３）における吸収層の厚さおよび吸水
性複合体（２）の位置は、比較体液吸収物品（１）のそ
れと同様であった。Comparative Example 3 A comparative body fluid absorbent article (3) was prepared in the same manner as Comparative Example 1 except that the water absorbent composite (2) obtained in Reference Example 2 was used instead of the water absorbent composite (1) in Comparative Example 1. Obtained. The thickness of the absorbent layer and the position of the water absorbent composite (2) in the comparative body fluid absorbent article (3) were the same as those in the comparative body fluid absorbent article (1).
比較例 ４ 比較例２における吸水性複合体（１）に代えて参考例
２で得た吸水性複合体（２）を用いる以外は比較例１と
同様にして、比較体液吸収物品（４）を得た。なお、比
較体液吸収物品（４）における吸収層の厚さおよび吸水
性複合体（２）の位置は、比較体液吸収物品（２）のそ
れと同様であった。Comparative Example 4 A comparative body fluid absorbent article (4) was prepared in the same manner as Comparative Example 1 except that the water absorbent composite (2) obtained in Reference Example 2 was used instead of the water absorbent composite (1) in Comparative Example 2. Obtained. In addition, the thickness of the absorbent layer and the position of the water absorbent composite (2) in the comparative body fluid absorbent article (4) were the same as those of the comparative body fluid absorbent article (2).
実施例 ５ 実施例１〜４および比較例１〜４で得られた本発明の
体液吸収物品（１）〜（４）および比較体液吸収物品
（１）〜（４）のそれぞれを用いて、以下の方法で体液
吸収物品の吸収特性（吸収速度および一旦吸収した体液
の保持力）を評価して、その結果を第１表に示した。Example 5 Each of the body fluid absorbent articles (1) to (4) and the comparative body fluid absorbent articles (1) to (4) of the present invention obtained in Examples 1 to 4 and Comparative Examples 1 to 4 was used as follows. The absorption characteristics (absorption rate and retention of body fluid once absorbed) of the body fluid absorbent article were evaluated by the method described above, and the results are shown in Table 1.
＜吸収特性の評価方法＞ イ吸収速度：人工尿（塩化ナトリウム0.8％、塩化カル
シウム0.1％、硫酸マグネシウム0.1％および尿素1.9％
の含有水）50ccを、水平な台上に裏面材を下にして載置
した体液吸収物品の表面材の中央部分に注ぎ、人工尿が
体液吸収物品に吸収されて消失するまでの時間を測定し
た。<Evaluation method of absorption characteristics> Absorption rate: artificial urine (sodium chloride 0.8%, calcium chloride 0.1%, magnesium sulfate 0.1% and urea 1.9%
50 cc of water) is poured into the central part of the surface material of the body fluid absorbent article placed with the backing material facing down on a horizontal table, and the time until artificial urine is absorbed by the body fluid absorbent article and disappears is measured. did.
ロ人工尿の保持力：吸収速度測定後の体液吸収物品を20
分間水平な台上に放置した後、体液吸収物品の表面材の
上にペーパータオルを置いて40g/cm2の荷重で加圧し
て、１分間にペーパータオルが吸収した人工尿の量（戻
り量）によって、保持力を評価した。(2) Retention of artificial urine: 20 items for absorbing body fluid after measuring absorption rate
After leaving it on a horizontal table for a minute, place a paper towel on the surface material of the body fluid absorbent article and pressurize it with a load of 40 g / cm2 , and depending on the amount (return amount) of artificial urine absorbed by the paper towel in 1 minute. , Holding power was evaluated.
戻り量が多いほど保持力は劣っていることになる。 The larger the amount of return, the poorer the holding power.
───────────────────────────────────────────────────── フロントページの続き 審査官 齋藤 恵 (56)参考文献 特開 昭61−98713（ＪＰ，Ａ) 特開 昭61−275355（ＪＰ，Ａ) 特開 昭61−55202（ＪＰ，Ａ) 特開 昭49−4393（ＪＰ，Ａ) 特開 昭59−204975（ＪＰ，Ａ) 特開 平１−221575（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page Examiner Megumi Saito (56) References JP 61-98713 (JP, A) JP 61-275355 (JP, A) JP 61-55202 (JP, A) Special Kai 49-4393 (JP, A) JP 59-204975 (JP, A) JP 1-222175 (JP, A)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1075071AJP2683091B2 (en) | 1989-03-29 | 1989-03-29 | Body fluid absorbent article |
| US07/498,846US5098775A (en) | 1989-03-29 | 1990-03-26 | Body fluid-absorbing article |
| KR1019900004134AKR940008961B1 (en) | 1989-03-29 | 1990-03-27 | Body fluid absorbing articles |
| DE90303275TDE69001939T2 (en) | 1989-03-29 | 1990-03-28 | Body fluid absorbent article. |
| EP19900303275EP0390513B1 (en) | 1989-03-29 | 1990-03-28 | Body-fluid-absorbing article |
| ES90303275TES2041504T3 (en) | 1989-03-29 | 1990-03-28 | ARTICLE FOR THE ABSORPTION OF BODY FLUIDS. |
| CA 2013217CA2013217A1 (en) | 1989-03-29 | 1990-03-29 | Body fluid-absorbing article |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1075071AJP2683091B2 (en) | 1989-03-29 | 1989-03-29 | Body fluid absorbent article |
| Publication Number | Publication Date |
|---|---|
| JPH02255142A JPH02255142A (en) | 1990-10-15 |
| JP2683091B2true JP2683091B2 (en) | 1997-11-26 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1075071AExpired - LifetimeJP2683091B2 (en) | 1989-03-29 | 1989-03-29 | Body fluid absorbent article |
| Country | Link |
|---|---|
| JP (1) | JP2683091B2 (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6142131A (en)* | 1998-05-08 | 2000-11-07 | The United States Of America As Represented By The Secretary Of The Army | Electromagnetic launcher with pulse-shaping armature and divided rails |
| US6417425B1 (en)* | 2000-02-01 | 2002-07-09 | Basf Corporation | Absorbent article and process for preparing an absorbent article |
| US6645407B2 (en)* | 2001-12-14 | 2003-11-11 | Kimberly-Clark Worldwide, Inc. | Process for making absorbent material with in-situ polymerized superabsorbent |
| Publication number | Publication date |
|---|---|
| JPH02255142A (en) | 1990-10-15 |
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