JPH0724769B2 - Body fluid absorbent article - Google Patents
Body fluid absorbent articleInfo
- Publication number
- JPH0724769B2 JPH0724769B2 JP61271963A JP27196386A JPH0724769B2 JP H0724769 B2 JPH0724769 B2 JP H0724769B2 JP 61271963 A JP61271963 A JP 61271963A JP 27196386 A JP27196386 A JP 27196386A JP H0724769 B2 JPH0724769 B2 JP H0724769B2
- Authority
- JP
- Japan
- Prior art keywords
- absorbent
- body fluid
- water
- absorbent article
- 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
- 239000002250 absorbent Substances 0.000 title claims description 65
- 230000002745 absorbent Effects 0.000 title claims description 50
- 210000001124 body fluid Anatomy 0.000 title description 32
- 239000010839 body fluid Substances 0.000 title description 30
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 42
- 229920000642 polymer Polymers 0.000 claims description 28
- 239000006096 absorbing agent Substances 0.000 description 8
- 230000006866 deterioration Effects 0.000 description 6
- 239000000499 gel Substances 0.000 description 6
- 210000002700 urine Anatomy 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 210000004243 sweat Anatomy 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000004745 nonwoven fabric Substances 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 206010016807 Fluid retention Diseases 0.000 description 2
- 229920002125 Sokalan® Polymers 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 229920000578 graft copolymer Polymers 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004584 polyacrylic acid Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000017 hydrogel Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002175 menstrual effect Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、吸水性ポリマーを含有してなる特定の吸収体
を用いた体液吸収物品に関する。更に詳しくは、体液吸
収後も経時的に安定に体液を保持でき横もれのない、吸
収特性が著しく向上した体液吸収物品に関する。TECHNICAL FIELD The present invention relates to a body fluid absorbent article using a specific absorbent body containing a water-absorbing polymer. More specifically, the present invention relates to a body fluid-absorbing article which is capable of stably retaining body fluid over time even after absorbing body fluid, has no lateral leakage, and has significantly improved absorption characteristics.
（従来の技術） 紙おむつ・生理的ナプキン・吸汗パッド等の体液吸収物
品の吸収体としては、従来からの綿・パルプ・紙等の繊
維質材料に吸水性ポリマーを複合化したものが近年用い
られている。そして、持ち運びや装着性の点からこれら
吸収物品をコンパクトにする傾向が強まっており、吸収
体中の吸水性ポリマーの割合を高めた吸収物品も数多く
出現してきている。(Prior Art) As absorbent bodies for bodily fluid absorbent articles such as paper diapers, physiological napkins, sweat absorbent pads, etc., composites of water absorbent polymers with conventional fibrous materials such as cotton, pulp and paper have been used in recent years. ing. From the viewpoint of portability and wearability, there is an increasing tendency to make these absorbent articles compact, and a large number of absorbent articles in which the proportion of the water-absorbent polymer in the absorbent body has been increased.
（発明が解決しようとする問題点） しかし、これら吸水性ポリマーを複合化した吸収体を用
いた従来の体液吸収物品では、尿・経血・汗等の体液を
吸収後に吸収体中の吸水性ポリマーの膨潤ゲルが経時的
に劣化・分解を起こし、吸収体が経時的に安定に体液を
保持できずに横もれが起こって、蒲団・シーツ・衣服等
を体液で汚すことがあった。(Problems to be solved by the invention) However, in a conventional body fluid absorbent article using an absorbent body in which these water-absorbent polymers are composited, water absorption in the absorbent body after absorbing body fluids such as urine, menstrual blood, and sweat. In some cases, the swollen gel of the polymer deteriorates and decomposes with time, and the absorbent body cannot stably hold the body fluid with time, and the body lays sideways, so that the lumps, sheets, clothes, etc. are soiled with the body fluid.
この様に従来の体液吸収物品は、吸収体の体液保持性が
経時的に低下して横もれを起こしやすいという問題点が
あり、吸水性ポリマーを含有してなる吸収体の経時的な
体液保持性にすぐれた吸収特性の向上した体液吸収物品
の出現が待ち望まれている。As described above, the conventional body fluid-absorbing article has a problem that the body fluid retention of the absorbent body is liable to be decreased due to lapse of time, and the body fluid of the absorbent body containing the water-absorbing polymer is liable to change with time. The advent of a body fluid absorbent article having excellent retentivity and improved absorption characteristics has been desired.
（問題点を解決するための手段および作用） 本発明者らは、この様な事情に鑑み鋭意研究を重ねた結
果、クエン酸が、体液を吸収後の吸水性ポリマーの膨潤
ゲルの経時的な劣化・分解を防止することを見出し、本
発明に到着した。(Means and Actions for Solving Problems) The inventors of the present invention have conducted extensive studies in view of such circumstances, and as a result, citric acid shows that the swelling gel of a water-absorbing polymer after absorbing body fluid changes with time. The inventors have found that deterioration and decomposition are prevented, and have arrived at the present invention.
即ち、本発明は、吸水性ポリマーを含有してなる吸収体
中にクエン酸を配してな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 relates to a body fluid absorbent article characterized in that citric acid is placed in an absorbent body containing a water-absorbing polymer.
本発明で吸収体に含有されて用いられる吸水性ポリマー
は、水中において多量の水を吸収して膨潤しヒドロゲル
を形成するものであり、例えばデンプン−アクリロニト
リルグラフト共重合体の加水分解物、デンプン−アクリ
ル酸グラフト重合体の中和物、アクリル酸エステル−酢
酸ビニル共重合体のケン化物、架橋ポリビニルアルコー
ル変成物、部分中和ポリアクリル酸塩架橋体、架橋イソ
ブチレン−無水マレイン酸共重合体等を挙げることがで
きる。The water-absorbing polymer contained in the absorbent of the present invention absorbs a large amount of water in water and swells to form a hydrogel. For example, a hydrolyzate of starch-acrylonitrile graft copolymer, starch- Neutralized products of acrylic acid graft polymers, saponified products of acrylic acid ester-vinyl acetate copolymers, crosslinked polyvinyl alcohol modified products, partially neutralized polyacrylic acid salt crosslinked products, crosslinked isobutylene-maleic anhydride copolymers, etc. Can be mentioned.
本発明におけるクエン酸の使用量は、吸水性ポリマー10
0重量部に対して0.001〜10重量部の範囲の割合が好まし
い。クエン酸の使用量が0.001重量部未満の場合は実質
有効量とはならず、膨潤ゲルの劣化防止効果が低くな
り、10重量部を越える多量としても増量にみあった効果
が得られず逆に吸収体の体液吸収量が低下するためコス
トの面から好ましくない。The amount of citric acid used in the present invention is the water-absorbing polymer 10
A ratio in the range of 0.001 to 10 parts by weight with respect to 0 parts by weight is preferable. If the amount of citric acid used is less than 0.001 part by weight, it will not be a substantially effective amount, and the effect of preventing deterioration of the swollen gel will be low. In addition, the amount of body fluid absorbed by the absorber is reduced, which is not preferable in terms of cost.
本発明の体液吸収物品は、前記の吸水性ポリマーを含有
してなる吸収体に前記のクエン酸を配して構成される
が、吸収体の形状や構成により制限を受けるものではな
い。したがって、紙おむつ・生理用ナプキン・吸汗パッ
ド等の体液吸収物品を構成するのに都合のよい形状例え
ばシートやフィルム状の吸収体に吸水性ポリマーを加工
するのに採用される従来公知の方法をとることができ
る。具体的には、吸水性ポリマーを吸収紙や不織布の間
に挟持したり、吸水性ポリマーと粉砕パルプとを乾式ま
たは湿式で混合したのちシート状に成形することによっ
て、吸水性ポリマーを含有してなる吸収体を得ることが
できる。The body fluid absorbent article of the present invention is configured by disposing the citric acid in the absorbent containing the water-absorbing polymer, but is not limited by the shape or configuration of the absorbent. Therefore, a conventionally known method adopted for processing a water-absorbent polymer into a shape, such as a sheet or a film, which is convenient for constructing a body fluid absorbent article such as a disposable diaper, a sanitary napkin, a sweat absorbent pad, etc., is adopted. be able to. Specifically, by sandwiching the water-absorbent polymer between absorbent paper or a nonwoven fabric, or by mixing the water-absorbent polymer and crushed pulp in a dry or wet form and then forming into a sheet form, the water-absorbent polymer is contained. Can be obtained.
本発明において、クエン酸を吸収体に配するには、クエ
ン酸を吸収体中に好ましくは均一に配置することができ
るのであれば、その手段は特に制限なく、例えば吸収体
の製造過程で、吸収体を構成する吸水性ポリマーや紙・
パルプ等の繊維質材料にクエン酸を添加するだけでよ
い。その添加方法は、クエン酸をそのまま添加してもよ
く、あるいはその他の溶媒に溶かしたり分散させたりし
た液状として添加してもよい。中でも、吸水性ポリマー
の製造過程でクエン酸を添加するなどして、クエン酸が
吸水性ポリマー中に含有されるように配しておくこと
が、吸水性ポリマーの膨潤ゲルの経時的な劣化・分解を
防止する効果が大きいので好ましい。In the present invention, in order to distribute citric acid to the absorber, if the citric acid can be preferably uniformly arranged in the absorber, the means is not particularly limited, for example, in the manufacturing process of the absorber, Water-absorbent polymer or paper that constitutes the absorber
It is only necessary to add citric acid to fibrous material such as pulp. As the addition method, citric acid may be added as it is, or may be added in the form of a liquid which is dissolved or dispersed in another solvent. Among them, by adding citric acid in the process of manufacturing the water-absorbent polymer, so that the citric acid is contained in the water-absorbent polymer, deterioration of the swollen gel of the water-absorbent polymer over time It is preferable because it has a large effect of preventing decomposition.
このようにして得られる吸収体を用いて本発明の体液吸
収物品を得るには、目的とする吸収物品の用途に応じ
て、この吸収体を単独あるいはその他の成分と適宜組み
合わせて体液吸収物品を構成すればよい。例えば吸汗用
パッドでは、得られた吸収体をそのままフトン上に置い
て体液吸収物品とすることができる。また、紙おむつや
生理用ナプキン等の衛生材料では、得られた吸収体を体
液透過性シートと体液防漏シートとの間に配して組み合
わせることにより、体液吸収物品とすることができる。In order to obtain the body fluid absorbent article of the present invention using the absorbent body thus obtained, a body fluid absorbent article may be prepared by combining the absorbent body alone or in combination with other components as appropriate depending on the intended use of the absorbent article. Just configure it. For example, in a sweat absorbent pad, the obtained absorbent body can be placed on a futon as it is to form a body fluid absorbent article. Further, in a sanitary material such as a paper diaper or a sanitary napkin, the obtained absorbent can be provided between the body fluid permeable sheet and the body fluid leak-proof sheet and combined to form a body fluid absorbent article.
本発明の体液吸収物品は、排出量が多く且つ吸水性ポリ
マーの膨潤ゲルが劣化・分解する現象をより顕著に発現
させる尿との接触時間の長いおむつ用に用いられて、特
に優れた効果を発揮する。The body fluid absorbent article of the present invention is used for a diaper having a long contact time with urine, which has a large discharge amount and causes the phenomenon in which the swollen gel of the water-absorbent polymer deteriorates and decomposes more significantly, and has a particularly excellent effect. Demonstrate.
（発明の効果） 本発明の体液吸収物品は、吸水性ポリマーを含有してな
る吸収体の体液保持性が経時的に低下することがなく、
横もれを起こすことがないため、紙おむつ・生理用ナプ
キン・吸汗パッドなどとして有効に使用できる。(Effect of the invention) The body fluid absorbent article of the present invention does not have a decrease in body fluid retention of an absorbent body containing a water-absorbing polymer over time,
Since it does not cause sideways leakage, it can be effectively used as a paper diaper, sanitary napkin, sweat absorbent pad, etc.
また、本発明の体液吸収物品では、吸収体中に配されて
いるクエン酸の作用で吸水性ポリマーの劣化・分解が体
液吸収後も完全に抑えられているため、吸収体中の吸水
性ポリマーの割合を増大することができる。したがっ
て、本発明は、コンパクトで持ち運びや装着性にすぐれ
且つ吸収特性にもすぐれた体液吸収物品を提供するもの
である。Further, in the body fluid absorbent article of the present invention, since the deterioration / decomposition of the water-absorbent polymer is completely suppressed by the action of citric acid disposed in the absorbent body even after absorbing the body fluid, the water-absorbent polymer in the absorbent body Can be increased. Therefore, the present invention provides a body fluid absorbent article that is compact, has excellent portability and wearability, and has excellent absorption characteristics.
（実施例） 以下、実施例を示すが、本発明はこれら実施例に限定さ
れるものではない。なお、以下に示す実施例の中でとく
に断りのない限り、部および％はすべて重量部および重
量％を表わす。(Examples) Examples will be shown below, but the present invention is not limited to these examples. In the following examples, all parts and% represent parts by weight and% by weight, unless otherwise specified.
実施例１ 部分中和ポリアクリル酸塩架橋体を主成分とする吸水性
ポリマー（商品名：アクアリックCA、日本触媒化学工業
（株）製）100部に20％クエン酸水溶液を５部噴霧混合
して、顆粒状の吸水剤（１）を得た。Example 1 5 parts of 20% citric acid aqueous solution was spray-mixed with 100 parts of a water-absorbing polymer (trade name: Aqualic CA, manufactured by Nippon Shokubai Kagaku Co., Ltd.) containing a partially neutralized polyacrylic acid salt cross-linked product as a main component. Thus, a granular water absorbing agent (1) was obtained.
次に、２枚の積層粉砕パルプシート（坪量150g/m2、密
度0.1g/cm3、大きさ190mm×140mm）の間に、吸収剤
（１）1.5gを均一に散布・サンドイッチして、吸収体を
得た。この吸収体を１枚のポリエチレンフィルムおよび
１枚のポリプロピレンスパンボンド不織布で挟持して、
本発明の体液吸収物品（１）を得た。Next, 1.5 g of the absorbent (1) was evenly dispersed and sandwiched between two laminated crushed pulp sheets (basis weight 150 g / m 2 , density 0.1 g / cm 3 , size 190 mm × 140 mm). , An absorber was obtained. This absorbent body is sandwiched between one polyethylene film and one polypropylene spunbond nonwoven fabric,
The body fluid absorbent article (1) of the present invention was obtained.
得られた体液吸収物品（１）の不織布側からその中央部
に成人尿60gを注いで吸収させた。８時間放置後、体液
吸収物品（１）の不織布側から23cm×23cmのペーパータ
オルを10枚かぶせて40g/cm2の圧力を１分間かけた後、
ペーパータオルを秤量し、ペーパータオルに吸収された
成人尿の戻り量を測定した。また、膨潤ゲルの様子を肉
眼により観察し、吸水性ポリマーの劣化状態を○〜△〜
×の三段階評価した。それらの結果を第１表に示した。Adult urine (60 g) was poured from the nonwoven fabric side of the obtained bodily fluid absorption article (1) to its central portion to absorb the urine. After standing for 8 hours, cover the non-woven fabric side of the body fluid absorbent article (1) with 10 23 cm × 23 cm paper towels and apply a pressure of 40 g / cm 2 for 1 minute.
The paper towel was weighed and the return amount of adult urine absorbed by the paper towel was measured. In addition, the appearance of the swollen gel is observed with the naked eye, and the deterioration state of the water-absorbent polymer is evaluated as ○ ～ △ ～
It was evaluated in three levels of x. The results are shown in Table 1.
比較例１ 実施例１における吸水剤（１）のかわりに実施例１で用
いたのと同じ吸水性ポリマーを用いる以外は実施例１と
同様にして、比較用体液吸収物品（１）を得た。Comparative Example 1 A body fluid absorbent article for comparison (1) was obtained in the same manner as in Example 1 except that the same water-absorbing polymer as that used in Example 1 was used instead of the water absorbing agent (1) in Example 1. .
得られた比較用体液吸収物品（１）を用いて、実施例１
で行ったと同様の方法により、成人尿の戻り量の測定と
吸水性ポリマーの劣化状態の評価を行った。それらの結
果を第１表に示した。Example 1 using the obtained comparative body fluid absorbing article (1)
The return amount of adult urine was measured and the deterioration state of the water-absorbent polymer was evaluated by the same method as that used in. The results are shown in Table 1.
Claims (1)
クエン酸を配してなることを特徴とする体液吸収物品。1. A body fluid-absorbing article, characterized in that citric acid is placed in an absorbent body containing a water-absorbing polymer.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61271963A JPH0724769B2 (en) | 1986-11-17 | 1986-11-17 | Body fluid absorbent article |
| CA000551946A CA1300866C (en) | 1986-11-17 | 1987-11-16 | Body fluid-absorbing article |
| ES198787310137T ES2041269T3 (en) | 1986-11-17 | 1987-11-17 | ARTICLE FOR THE ABSORPTION OF BODY FLUIDS. |
| KR1019870012947A KR940008960B1 (en) | 1986-11-17 | 1987-11-17 | Body fluid absorption article |
| DE87310137T DE3786232T2 (en) | 1986-11-17 | 1987-11-17 | Body fluid absorbent article. |
| EP87310137A EP0268459B1 (en) | 1986-11-17 | 1987-11-17 | Body fluid-absorbing article |
| US07/449,456 US4959060A (en) | 1986-11-17 | 1989-12-12 | Body fluid-adsorbing article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61271963A JPH0724769B2 (en) | 1986-11-17 | 1986-11-17 | Body fluid absorbent article |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63127754A JPS63127754A (en) | 1988-05-31 |
| JPH0724769B2 true JPH0724769B2 (en) | 1995-03-22 |
Family
ID=17507247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61271963A Expired - Lifetime JPH0724769B2 (en) | 1986-11-17 | 1986-11-17 | Body fluid absorbent article |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0724769B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2559447B2 (en) * | 1988-02-18 | 1996-12-04 | 花王株式会社 | Water-absorbent resin composition with excellent stability |
| JPH0768316B2 (en) * | 1990-09-07 | 1995-07-26 | 三洋化成工業株式会社 | Water absorbent resin manufacturing method |
| JPH04103115U (en) * | 1991-01-25 | 1992-09-04 | 荒川化学工業株式会社 | sachet |
| JP3558756B2 (en) * | 1995-09-13 | 2004-08-25 | 三洋化成工業株式会社 | Water absorbing agent |
| US6716894B2 (en) | 2001-07-06 | 2004-04-06 | Nippon Shokubai Co., Ltd. | Water-absorbent resin powder and its production process and uses |
| CN104582832B (en) * | 2012-08-27 | 2017-10-24 | 株式会社日本触媒 | Particulate water-absorbing agent and its manufacture method |
| EP3056268B1 (en) | 2013-10-09 | 2023-03-22 | Nippon Shokubai Co., Ltd. | Particulate water absorber comprising water-absorbing resin as main component and process for manufacturing same |
-
1986
- 1986-11-17 JP JP61271963A patent/JPH0724769B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63127754A (en) | 1988-05-31 |
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