JPS62170246A - Absorbing material of absorbable sanitary article - Google Patents
Absorbing material of absorbable sanitary articleInfo
- Publication number
- JPS62170246A JPS62170246A JP61009575A JP957586A JPS62170246A JP S62170246 A JPS62170246 A JP S62170246A JP 61009575 A JP61009575 A JP 61009575A JP 957586 A JP957586 A JP 957586A JP S62170246 A JPS62170246 A JP S62170246A
- Authority
- JP
- Japan
- Prior art keywords
- polymer particles
- superabsorbent polymer
- absorbent body
- fibrous web
- absorbent
- 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.)
- Granted
Links
- 239000011358 absorbing material Substances 0.000 title 1
- 230000002745 absorbent Effects 0.000 claims description 49
- 239000002250 absorbent Substances 0.000 claims description 49
- 239000002245 particle Substances 0.000 claims description 45
- 229920000247 superabsorbent polymer Polymers 0.000 claims description 33
- 239000000835 fiber Substances 0.000 claims description 32
- 238000009826 distribution Methods 0.000 claims description 21
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 6
- 239000000470 constituent Substances 0.000 claims description 5
- 239000004745 nonwoven fabric Substances 0.000 claims description 4
- 230000002209 hydrophobic effect Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000012209 synthetic fiber Substances 0.000 claims 1
- 229920002994 synthetic fiber Polymers 0.000 claims 1
- 239000000463 material Substances 0.000 description 15
- 210000001124 body fluid Anatomy 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 9
- 239000010839 body fluid Substances 0.000 description 9
- 238000009792 diffusion process Methods 0.000 description 9
- 239000002585 base Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method 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
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- -1 furthermore Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000001953 sensory effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 206010021639 Incontinence Diseases 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000007870 radical polymerization initiator Substances 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、使い捨ておむつ、生理用ナプキン、失禁パッ
ド、その他の衛生物品用として利用することができる吸
収体に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an absorbent body that can be used for disposable diapers, sanitary napkins, incontinence pads, and other sanitary articles.
従来、この種の吸収体として、高吸収性ポリマー粒子を
、吸水紙、繊維をゆるく集積させまたは繊維を結合させ
たウェブ等の基材上に接着剤を介してまたは前記粒子に
加湿し粘着性を付与して基材の面方向に連続的または間
欠的に固定した複合体、さらに前記複合体を複数積層し
たもの、さらにまた繊維または／および綿状（粉砕）パ
ルプと混合して形態を賦与したもの等が知られている。Conventionally, as this type of absorbent material, superabsorbent polymer particles are placed on a base material such as water-absorbing paper, a web made of loosely assembled fibers, or a web made of bonded fibers, etc. via an adhesive or moistened with the particles to make them sticky. composites that are fixed continuously or intermittently in the surface direction of a base material, furthermore, composites that are laminated with multiple layers of the above-mentioned composites, and furthermore, that are mixed with fibers or/and flocculent (pulverized) pulp to give a shape. Those who have done so are known.
しかし、これら公知のものは、前記粒子の基材における
安定性が悪く、前記粒子が基材から脱落したり移動偏在
したりし、また体液拡散性が悪く、前記粒子の有効利用
ができないといった多くの問題点を有している。However, in these known methods, the stability of the particles in the base material is poor, the particles fall off from the base material or are unevenly distributed, and the dispersibility of body fluids is poor, making it impossible to use the particles effectively. It has the following problems.
最近、かかる問題点を解決するため、繊維ウェブ中に高
吸収性ポリマー成分の七ツマー水溶液を繊維質基材に含
浸させたのち該七ツマ−を重合させる吸収体の製法が、
例えば、特開昭ＧＯ−１４９８０９号公報において提案
されている。Recently, in order to solve this problem, a method for manufacturing an absorbent body has been developed in which a fibrous base material is impregnated with an aqueous solution of a superabsorbent polymer component, 7mer, and then the 7mer is polymerized.
For example, it is proposed in Japanese Patent Application Laid-Open No. 149809.
前記提案にかかる吸収体は、七ツマー水溶液を重合、乾
燥させることによりポリマーを基材中に一体的に固定す
ることから、前記ポリマーの基材中における安定性はき
わめて良好である。しかし、それがため、しかも基材の
全域にわたり均一に前記ポリマーを存在させであるため
、衛生物品の吸収体として用いるのには剛性が高すぎ、
しかも体液の拡散方向性がないため、前記ポリマーの有
効利用が改善されず、甚だ不経済であるといったいまだ
多くの問題点がある。In the absorbent body according to the above proposal, the polymer is integrally fixed in the base material by polymerizing and drying the aqueous solution of 7mer, and therefore, the stability of the polymer in the base material is extremely good. However, because of this, and because the polymer is uniformly present over the entire area of the base material, it is too rigid to be used as an absorbent material for sanitary articles.
Moreover, since there is no directionality in the diffusion of body fluids, there are still many problems such as the effective utilization of the polymer is not improved and it is extremely uneconomical.
（発明の目的）
本発明は、主として、前記提案にかかるがごとき吸収体
の前記問題点を解決して、吸収性衛生物−品として良好
な剛軟度、体液拡散方向性、経済性等の利点を有する吸
収体を提供することにある。(Objective of the Invention) The present invention mainly solves the above-mentioned problems of the absorbent body as proposed above, and provides good bending resistance, directionality of bodily fluid diffusion, economic efficiency, etc. as an absorbent sanitary product. The object of the present invention is to provide an absorbent body having advantages.
（発明の構成）
本発明は、前記目的を達成するため、繊維ウェブ中に高
吸収性ポリマー粒子が混在する吸収性衛生物品の吸収体
において、前記高吸収性ポリマー粒子は繊維ウェブ中に
群れを形成してその面方向に間欠的にかつ厚さ方向に連
続的に分布するとともに繊維に一体的に固定しているこ
とを特徴とする前記吸収体に存する。(Structure of the Invention) In order to achieve the above object, the present invention provides an absorbent body for an absorbent sanitary article in which superabsorbent polymer particles are mixed in a fibrous web, in which the superabsorbent polymer particles are clustered in the fibrous web. The absorbent body is characterized in that it is formed and distributed intermittently in the surface direction and continuously in the thickness direction, and is integrally fixed to the fibers.
（実施態様）
さらに、本発明を図示の実施態様に基づいて説明すると
、以下のとおりである。(Embodiments) Further, the present invention will be explained based on the illustrated embodiments as follows.
第１図ＡないしＣに示すように、吸収体ｌは、繊維ウェ
ブ２と、高吸収性ポリマー粒子３とを含む、高吸収性ポ
リマー粒子３は、繊維ウェブ２の中に群れを形成してそ
の面方向に間欠的にかつ厚さ方向に連続的に分布させる
とともにｍ維に一体に固定させである。高吸収性ポリマ
ー粒子３が群れを形成して分布する領域４は、第１図Ａ
においては、繊維ウェブ２の幅方向に間隔をおきかつ長
さ方向に連続する縦縞模様をなし、第１図Ｂにおいては
、第１図Ａの縦縞領域が波模様をなし、第１図Ｃにおい
ては、第１図Ａの縦縞状領域が長さ方向に幅方向の間隔
よりも長く断続する模様をなしている。As shown in FIGS. 1A to 1C, the absorbent body 1 includes a fibrous web 2 and superabsorbent polymer particles 3. The superabsorbent polymer particles 3 form clusters in the fibrous web 2. It is distributed intermittently in the surface direction and continuously in the thickness direction, and is fixed integrally with the m-fiber. The region 4 where the superabsorbent polymer particles 3 are distributed in clusters is shown in FIG. 1A.
In FIG. 1B, the vertical striped area in FIG. 1A has a wave pattern, and in FIG. 1A, the vertical striped regions shown in FIG. 1A have a pattern in which the longitudinal striped regions are discontinuously longer than the intervals in the width direction.
高吸収性ポリマー粒子の分布領域４の長さと幅の方向に
おけるピッチは１０〜５０ｍｍ、好ましくは２５〜４０
ｍｍである。また繊維ウェブ２に対する高吸収性ポリマ
ー粒子３の分布量は、繊維ウェブ２の重量の１〜６．２
５倍、具体的には１５〜５００ｇ１０２ 、好ましくは
４０〜３００ｇ／ｍ２ である、前記ピッチが１０ｇ＋
■以下、前記分布量が５ＱＯｇ／ｍ２以上であると、吸
収体１の剛性が身体に当接する衛生物品用としては高く
なり、圧縮復元性が悪くなり、かつ、吸収体１中におけ
る高吸収性ポリマー粒子３の吸液時の膨張許容空隙率が
低くなる。また前記ピッチが５０ｍｍ以上、前記分布量
が１５ｇ／ｍ２以下であると、体液の吸収容量が少なく
なり、高吸収性ポリマー粒子３を用いた効果を十分に奏
しない。なお、高吸収性ポリマー粒子の分布領域４の対
向端の間隔、すなわち、非分布領域５の幅または長さは
３ｍｍ以上であることが好ましい。The pitch in the length and width direction of the distribution region 4 of superabsorbent polymer particles is 10 to 50 mm, preferably 25 to 40 mm.
It is mm. The distribution amount of the superabsorbent polymer particles 3 with respect to the fibrous web 2 is 1 to 6.2 of the weight of the fibrous web 2.
5 times, specifically 15-500g/m2, preferably 40-300g/m2, the pitch is 10g+
■Hereinafter, when the above-mentioned distribution amount is 5QOg/m2 or more, the rigidity of the absorbent body 1 becomes high for sanitary products that come into contact with the body, the compression recovery property becomes poor, and the absorbent body 1 has high absorbency. The allowable porosity for expansion of the polymer particles 3 during liquid absorption becomes low. Further, if the pitch is 50 mm or more and the distribution amount is 15 g/m2 or less, the absorption capacity for body fluids will be reduced, and the effect of using the superabsorbent polymer particles 3 will not be sufficiently achieved. Note that the distance between opposing ends of the distribution region 4 of superabsorbent polymer particles, that is, the width or length of the non-distribution region 5, is preferably 3 mm or more.
高吸収性ポリマー粒子３は、第２図および第３図に示す
ように、分布領域４において間欠的にかつ実質的に均一
分布するとともに、Ｆａ維間、繊維交差部や非交差部に
繊維の一部の周囲を包みまたは包まない状態で一体的に
結合している。As shown in FIGS. 2 and 3, the superabsorbent polymer particles 3 are distributed intermittently and substantially uniformly in the distribution region 4, and the fibers are distributed between the Fa fibers, at fiber intersections, and at non-intersection locations. It is integrally joined with or without wrapping around a part.
Ｈ＆維ウェブ２は、目付が１５〜８０ｇ／ｍ２、好まし
くは２５〜４０ｇ／ｍ２である。目付が１５ｇ／ｍ２以
下であると、所要の高吸収性ポリマー粒子３を支持させ
、かつ所要の弾性（クッション）を付与することができ
ない、また目付が８０ｇ／■２以上であると、高吸収性
ポリマー粒子３の使用量を少なくせざるをえず、それを
用いる効果を十分に奏しない。The H&fiber web 2 has a basis weight of 15 to 80 g/m2, preferably 25 to 40 g/m2. If the basis weight is 15 g/m2 or less, it will not be possible to support the required superabsorbent polymer particles 3 and provide the required elasticity (cushion), and if the basis weight is 80 g/m2 or more, the superabsorbent Therefore, the amount of the polymer particles 3 used must be reduced, and the effect of using them cannot be sufficiently achieved.
吸収体ｌ、すなわち繊維ウェブ２に高吸収性ポリマー粒
子３を分布させたものは、乾燥状態において、圧縮復元
率が３０％以上、好ましくは５０％以上である。圧縮復
元率が３０％以下であると、着用者に剛性感を与え、繊
維ウェブ２の繊維間や高吸収性ポリマー粒子３間の所定
空隙率が低下して体液吸収容量が少なくなり、かつ、通
気性も低下する。The absorbent body 1, that is, the fiber web 2 in which superabsorbent polymer particles 3 are distributed, has a compression recovery rate of 30% or more, preferably 50% or more in a dry state. When the compression recovery rate is 30% or less, the wearer feels stiff, the predetermined porosity between the fibers of the fibrous web 2 and the superabsorbent polymer particles 3 decreases, and the body fluid absorption capacity decreases, and Breathability also decreases.
繊維ウェブ２の構成繊維は、コツトン・レーヨン等の親
水性繊維、ポリエステル−ポリプロピレン等の疎水性繊
維の単独または混合物からなる。The constituent fibers of the fibrous web 2 include hydrophilic fibers such as cotton rayon and hydrophobic fibers such as polyester-polypropylene, either singly or in combination.
吸収体ｌにおける体液の浸透性、湿潤下の圧縮復元性等
を向上させるためには、表面を親水化した合成ｍａ、特
にそのポリエステル繊維を適宜量を含むことが好ましい
、また前記圧縮復元性を向上させるためには、繊度は３
ｄ以上、好ましくは５〜１５ｄである。繊維ウェブ２の
形態としては、繊維をゆるく集積したもの、繊維を高速
水流噴射処理やニードリング処理で交絡させ、または熱
溶融で接合することにより、シート状化した不織布を好
適に用いるこができる。なお、繊維ウェブ２の密度は０
．Ｏ１〜０．５ｇ／ｃ＋ａ３ものが好ましいが、特に限
定されない。In order to improve the permeability of body fluids, compression recovery properties under humidity, etc. in the absorbent body 1, it is preferable to include an appropriate amount of synthetic ma whose surface has been made hydrophilic, especially its polyester fibers, and to improve the compression recovery properties. In order to improve the fineness, the fineness should be 3.
d or more, preferably 5 to 15 d. As the form of the fibrous web 2, a nonwoven fabric formed by loosely accumulating fibers, or a nonwoven fabric made into a sheet by intertwining the fibers by high-speed water jet treatment or needling treatment, or joining them by heat melting can be suitably used. . Note that the density of the fiber web 2 is 0.
．． Although O1 to 0.5 g/c+a3 is preferable, there is no particular limitation.
高吸収性ポリマー粒子３は、例えば、澱粉のグラフト重
合体、セルロース変性物、水溶性高分子の架橋物、自己
架橋型アクリル酸アルカリ金属塩ポリマー等、従来、吸
収性衛生物品や園芸用の吸収性材料等として知られてい
るものを用いることができるが、特に限定されない。The superabsorbent polymer particles 3 are conventional absorbent materials such as starch graft polymers, modified cellulose, crosslinked water-soluble polymers, self-crosslinked alkali metal acrylate polymers, etc. Although it is possible to use materials known as flexible materials, there are no particular limitations.
前述のような吸収体１は、高吸収性ポリマー粒子３の成
分、例えば、アクリル酸またはアクリル酸／メタクリル
醜の混合物のアルカリ金属塩またはアンモニュウム塩を
含むモノマーの水溶液に水溶性ラジカル重合開始剤を溶
解させてこれをスプレーノズルにより繊維ウェブ２に前
記模様状に噴霧含浸させたのち、重合、乾燥させること
により製造することができる。The absorbent body 1 as described above is prepared by adding a water-soluble radical polymerization initiator to an aqueous solution of a monomer containing a component of the superabsorbent polymer particles 3, for example, an alkali metal salt or an ammonium salt of acrylic acid or an acrylic acid/methacrylic acid mixture. It can be produced by dissolving and impregnating the fibrous web 2 by spraying it in the pattern using a spray nozzle, followed by polymerization and drying.
第４図に示す吸収体６は、前記吸収体１の上下面に綿状
バルブ層７．８を重積して形成しである。The absorbent body 6 shown in FIG. 4 is formed by stacking cotton-like valve layers 7.8 on the upper and lower surfaces of the absorbent body 1.
前記吸収体１は衛生物品の吸収体として単独またはそれ
を複数重積して用いることができることはいうまでもな
いが、使い捨ておむつ、生理用ナプキン等においては、
綿状パルプ層７または／および８と重積して用いること
が、体液の吸収性、柔軟性、経済性等のうえで好ましい
、綿状パルプ層７．８の目付は物品の種類によって異な
るが、両者合計で１００〜８５０ｇ／膳２であることが
好ましい、また目的とする吸収機構の採択に当っては、
吸収体ｌ、綿状パルプ７．８の少なくとも一つに加湿し
てまたは加湿せずにエンボスを賦与し、または全面プレ
スすることもある。It goes without saying that the absorbent body 1 can be used alone or in a stack of multiple absorbers for sanitary articles, but in disposable diapers, sanitary napkins, etc.
It is preferable to use the floc-like pulp layer 7 and/or 8 in a stacked manner from the viewpoint of absorbency of body fluids, flexibility, economic efficiency, etc. Although the basis weight of the floc-like pulp layer 7.8 varies depending on the type of article, , it is preferable that the total amount of both is 100 to 850 g/meal 2. Also, when selecting the intended absorption mechanism,
At least one of the absorbent material 1 and the flocculent pulp 7.8 may be embossed with or without humidification, or the entire surface may be pressed.
第４図に示すような高吸収性ポリマー粒子の分布模様と
構造を有する吸収体を既述の製法により得た。An absorbent body having the distribution pattern and structure of superabsorbent polymer particles as shown in FIG. 4 was obtained by the above-mentioned manufacturing method.
全体の大きさ 縦３７ｈｍＸ ＠ １４ｈａ繊維
ウエブ ４０ｇ／ｍ２高吸収性ポリマー
粒子 ２８０ｇ／層２上部綿状パルプ層 １３
０ｇ／ｍ２下部綿状バルブ層 １５０ｇ／ｍ２高
吸収性ポリマー粒子の分布領域の幅 ２０．。Overall size Length 37hm
0g/m2 Lower flocculent valve layer 150g/m2 Width of distribution area of superabsorbent polymer particles 20. .
高吸収性ポリマー粒子の非分布領域の＠ １０ｍｍ比
較例として、高吸収性ポリマー粒子を繊維ウェブの全体
に均一に分布させた吸収体を得た以外は、前記実施例と
同条件とした。Non-distribution area of superabsorbent polymer particles @ 10 mm As a comparative example, the same conditions as in the previous example were used, except that an absorbent body in which superabsorbent polymer particles were uniformly distributed throughout the fibrous web was obtained.
実施例、比較例の各吸収体を３６．１ｍｍＸ ５０ｍｇ
＋にカットし、それらの剛軟度１体液拡散方向性を測定
した。剛軟度は、手で触わる官能評価と、テーバーステ
ィフネステスター（Ｋ、に、社安田精機製造所）でＪ
ｌ５−Ｐ−８１２５に準拠する測定とによった。また実
施例、比較例の各吸収体（３７０ｍｍＸ １４０ｍｍ）
の液体拡散方向性は、それらの上部から生理食塩水４０
ｃｃを投入し、５分間放置したのち、再び同一個所に同
水 ４０ｃｃを投入し、５分間放置したのち、液体の拡
散状態を測定した。36.1 mm x 50 mg of each absorber of Examples and Comparative Examples
+ cut, and their bending resistance 1 body fluid diffusion directionality was measured. The bending resistance was determined by the sensory evaluation by touching with the hand and by the Taber stiffness tester (K, Ni, Yasuda Seiki Seisakusho).
Measurement based on 15-P-8125. In addition, each absorber of Examples and Comparative Examples (370 mm x 140 mm)
The liquid diffusion direction of the saline 40 from the top of them
cc was added and left to stand for 5 minutes, then 40 cc of the same water was added to the same location again, and after being left to stand for 5 minutes, the state of liquid diffusion was measured.
比較例 実施例
官能評価 腰があり硬い 柔かいテスター測定
３５．０ ５．Ｑ（曲げモーメント、ｇ
°ｃ厘）
拡散方向性 １３０Ｘ １３０ １１０Ｘ ２
２０（幅×長さ、ａ＋ｍ）
前記性能の比較から、柔かさに関して実施例が比較例よ
りも優れており、また前記物品における横漏れを防止し
長さ方向に拡散して吸収体の有効利用をはかることに関
して実施例が比較例よりも優れていることが判る。Comparative Example Sensory Evaluation of the Example Tough and Hard Soft Tester Measurement 35.0 5. Q (bending moment, g
°c) Diffusion directionality 130X 130 110X 2
20 (width x length, a+m) From the above performance comparison, the example is superior to the comparative example in terms of softness, and it also prevents side leakage in the article and diffuses it in the length direction, making effective use of the absorbent material. It can be seen that the Examples are superior to the Comparative Examples in terms of measuring.
（発明の作用・効果）
本発明にかかる吸収体は、上述のように構成しであるか
ら、繊維ウェブ中の全域に均一に高吸収性ポリマー成分
のモノマーを含浸させたのち、重合、乾燥させることに
より、繊維に固定させた公知の吸収体に比較して、身体
に当接して用いる衛生物品に要求される柔かさが著しく
優れている。(Operations and Effects of the Invention) Since the absorbent body according to the present invention is configured as described above, the entire area of the fiber web is uniformly impregnated with the monomer of the superabsorbent polymer component, and then polymerized and dried. As a result, compared to known absorbent bodies fixed to fibers, the softness required for sanitary articles used in contact with the body is significantly superior.
また体液は、高吸収性ポリマー粒子の分布領域において
は、隣接する前記粒子間の吸引作用と繊維による誘導作
用とにより前記粒子の分布領域に沿う面方向（特に長さ
方向）と厚さ方向に拡散吸収されるが、そして、単にそ
のような拡散吸収状態であれば、比較的に拡散吸収速度
が遅く、吸収容量も少ないが、さらに体液は、前記粒子
の非分布領域を素早く透過して前記粒子の分布領域の厚
さ方向に交差する方向である側面からも吸収されるので
、前記拡散吸収速度が著しく高くなり、そのため前記粒
子を有効に利用することができるとともに、前記粒子の
少ない使用量で吸収性能を著しく向上させることができ
、またそのためきわめて経済的である。したがって、本
発明にかかる吸収体は、吸収性衛生物品のそれとしてま
ことに好適である。In addition, in the distribution area of superabsorbent polymer particles, body fluids are absorbed in the surface direction (particularly the length direction) and the thickness direction along the distribution area of the particles due to the suction effect between the adjacent particles and the guiding effect by the fibers. However, if the body fluid is simply in such a state of diffusion absorption, the diffusion absorption rate is relatively slow and the absorption capacity is small. Since the particles are also absorbed from the side surface, which is the direction intersecting the thickness direction of the distribution area of the particles, the rate of diffusion and absorption is significantly increased, which makes it possible to utilize the particles effectively and reduce the amount of particles used. It is possible to significantly improve the absorption performance with this method, and it is therefore extremely economical. Therefore, the absorbent body according to the present invention is truly suitable as an absorbent sanitary article.
図面は本発明にかかる吸収体の実施態様を模式的に示す
もので、第１図ＡないしＣは高吸収性ポリマー粒子の分
布領域の形態を示す平面図、第２図は第１図ｘ−Ｘ線拡
大断面図、第３図は前記粒子の分布領域の拡大図、第４
図は前記吸収体の上下面に綿状パルプ層を重積して構成
した吸収体をに示す部分切欠斜視図である。
１・・・吸収体
２・・・繊維ウェブ
３・・・高吸収性ポリマー粒子
４・・・該粒子の分布領域
５・・・該粒子の非分布領域
８・・・吸収体
７．８・・・綿状パルプ層The drawings schematically show embodiments of the absorbent body according to the present invention, and FIGS. 1A to 1C are plan views showing the morphology of the distribution area of superabsorbent polymer particles, and FIG. FIG. 3 is an enlarged X-ray cross-sectional view, and FIG. 4 is an enlarged view of the distribution area of the particles.
The figure is a partially cutaway perspective view showing an absorbent body constructed by stacking cotton-like pulp layers on the upper and lower surfaces of the absorbent body. 1... Absorbent body 2... Fibrous web 3... Super absorbent polymer particles 4... Distribution area of the particles 5... Non-distribution area of the particles 8... Absorbent body 7.8.・・Flot-like pulp layer
Claims (13)
吸収性衛生物品の吸収体において、前記高吸収性ポリマ
ー粒子は前記繊維ウェブ中に群れを形成してその面方向
に間欠的にかつ厚さ方向に連続的に分布するとともに繊
維に一体的に固定していることを特徴とする前記吸収体
。(1) In an absorbent body for an absorbent sanitary article in which superabsorbent polymer particles are mixed in a fibrous web, the superabsorbent polymer particles form clusters in the fibrous web and are distributed intermittently in the surface direction and thickly. The absorbent body is characterized in that it is continuously distributed in the width direction and is integrally fixed to the fibers.
幅方向に間隔をおきかつ長さ方向に連続する縦縞模様を
なす特許請求の範囲第１項記載の吸収体。(2) The absorbent article according to claim 1, wherein the distribution regions of the superabsorbent polymer particles form a vertical striped pattern spaced apart in the width direction of the fiber web and continuous in the length direction.
幅方向に間隔をおきかつ長さ方向に該間隔よりも長く断
続的に延びる模様をなす特許請求の範囲第１項記載の吸
収体。(3) The absorbent article according to claim 1, wherein the distribution regions of the superabsorbent polymer particles form a pattern that is spaced apart in the width direction of the fibrous web and intermittently extends longer than the distance in the length direction.
〜５０ｍｍである特許請求の範囲第１項記載の吸収体。(4) The pitch of the distribution area of superabsorbent polymer particles is 10
The absorbent body according to claim 1, which has a thickness of 50 mm.
量は前記繊維ウェブの重量の１〜６．２５倍である特許
請求の範囲第１項記載の吸収体。(5) The absorbent article according to claim 1, wherein the amount of superabsorbent polymer particles distributed in the fiber web is 1 to 6.25 times the weight of the fiber web.
特許請求の範囲第１項記載の吸収体。(6) The absorbent body according to claim 1, wherein the fiber web has a basis weight of 15 to 80 g/m^2.
／ｍ＾２である特許請求の範囲第１項記載の吸収体。(7) The distribution amount of superabsorbent polymer particles is 15-500g
/m^2. The absorbent body according to claim 1.
ウェブは乾燥状態における圧縮復元率が少なくとも３０
％である特許請求の範囲第１項記載の吸収体。(8) The fibrous web in which superabsorbent polymer particles are distributed and bonded has a compression recovery rate of at least 30 in the dry state.
% of the absorbent body according to claim 1.
独または混合物である特許請求の範囲第１項記載の吸収
体。(9) The absorbent body according to claim 1, wherein the fiber web is composed of hydrophilic/hydrophobic fibers alone or in a mixture.
した合成繊維を含む特許請求の範囲第１項記載の吸収体
。(10) The absorbent body according to claim 1, wherein the fibrous web contains synthetic fibers whose surfaces have been subjected to hydrophilic treatment as constituent fibers.
ある特許請求の範囲第１項記載の吸収体。(11) The absorbent article according to claim 1, wherein the fibrous web is a loose collection of constituent fibers.
を賦与された不織布である特許請求の範囲第１項記載の
吸収体。(12) The absorbent article according to claim 1, wherein the fibrous web is a nonwoven fabric in which the constituent fibers are intertwined to give a sheet-like shape.
を賦与された不織布である特許請求の範囲第１項記載の
吸収体。(13) The absorbent article according to claim 1, wherein the fibrous web is a nonwoven fabric in which constituent fibers are fused and given a sheet-like shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61009575A JPS62170246A (en) | 1986-01-20 | 1986-01-20 | Absorbing material of absorbable sanitary article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61009575A JPS62170246A (en) | 1986-01-20 | 1986-01-20 | Absorbing material of absorbable sanitary article |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62170246A true JPS62170246A (en) | 1987-07-27 |
| JPH0580220B2 JPH0580220B2 (en) | 1993-11-08 |
Family
ID=11724108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61009575A Granted JPS62170246A (en) | 1986-01-20 | 1986-01-20 | Absorbing material of absorbable sanitary article |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62170246A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019058739A (en) * | 2014-12-23 | 2019-04-18 | ザ プロクター アンド ギャンブル カンパニー | Absorbent core comprising high loft central layer and channels |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57500546A (en) * | 1980-05-12 | 1982-04-01 | ||
| JPS59204975A (en) * | 1983-04-18 | 1984-11-20 | パ−ソナル・プロダクツ・カンパニ− | Production of absorbable composite |
| US4559050A (en) * | 1984-08-17 | 1985-12-17 | Personal Products Company | Thin, soft, absorbent product |
| JPS6185942A (en) * | 1984-08-17 | 1986-05-01 | パ−ソナル・プロダクツ・カンパニ− | Softening of composite absorbing article |
-
1986
- 1986-01-20 JP JP61009575A patent/JPS62170246A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57500546A (en) * | 1980-05-12 | 1982-04-01 | ||
| JPS59204975A (en) * | 1983-04-18 | 1984-11-20 | パ−ソナル・プロダクツ・カンパニ− | Production of absorbable composite |
| US4559050A (en) * | 1984-08-17 | 1985-12-17 | Personal Products Company | Thin, soft, absorbent product |
| JPS6185942A (en) * | 1984-08-17 | 1986-05-01 | パ−ソナル・プロダクツ・カンパニ− | Softening of composite absorbing article |
| JPS6185943A (en) * | 1984-08-17 | 1986-05-01 | パ−ソナル・プロダクツ・カンパニ− | Thin and soft absorbing product |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019058739A (en) * | 2014-12-23 | 2019-04-18 | ザ プロクター アンド ギャンブル カンパニー | Absorbent core comprising high loft central layer and channels |
| US11110014B2 (en) | 2014-12-23 | 2021-09-07 | The Procter & Gamble Company | Absorbent core comprising a high loft central layer and channels |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0580220B2 (en) | 1993-11-08 |
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