JPS633062B2 - - Google Patents
Info
- Publication number
- JPS633062B2 JPS633062B2 JP55034158A JP3415880A JPS633062B2 JP S633062 B2 JPS633062 B2 JP S633062B2 JP 55034158 A JP55034158 A JP 55034158A JP 3415880 A JP3415880 A JP 3415880A JP S633062 B2 JPS633062 B2 JP S633062B2
- Authority
- JP
- Japan
- Prior art keywords
- nonwoven sheet
- superabsorbent
- ultrafine
- needle punching
- nonwoven fabric
- 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
Links
- 239000011347 resin Substances 0.000 claims description 34
- 229920005989 resin Polymers 0.000 claims description 34
- 239000002250 absorbent Substances 0.000 claims description 21
- 229920001410 Microfiber Polymers 0.000 claims description 20
- 239000004745 nonwoven fabric Substances 0.000 claims description 18
- 230000002745 absorbent Effects 0.000 claims description 14
- 238000004080 punching Methods 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 238000010521 absorption reaction Methods 0.000 description 11
- 239000000853 adhesive Substances 0.000 description 10
- 230000001070 adhesive effect Effects 0.000 description 10
- 239000000463 material Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 2
- 239000003658 microfiber Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010413 gardening Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Laminated Bodies (AREA)
- Manufacturing Of Multi-Layer Textile Fabrics (AREA)
- Nonwoven Fabrics (AREA)
Description
【発明の詳細な説明】
本発明は、シート自体の体積に比し、きわめて
大量の水を吸収保持することのできる不織シート
に係るものである。最近、自重の数100倍もの水
を吸収保持し、少々の圧力がかかつても一且吸収
した水は放出しないという特性をもつた高吸水性
樹脂が粉末状あるいは鱗片状で一般に提供され、
このものを応用した商品が開発されている。例え
ば、この高吸水性樹脂を構成素材の一つとして用
いることによつて、従来に比べて極端に薄い生理
用ナプキンが提供され、また吸水性能が高くかつ
べとつかない紙おむつ等が提供されている。さら
に又最近ではこの高吸水性樹脂を不織布でサンド
イツチしてなるシートも提供されている。いづれ
にしても、粉末状の高吸水性樹脂を２枚の紙ある
いは不織布の間に狭持せしめた構成がほとんどで
あつて、前者の生理用ナプキンおよび紙おむつの
ごとき完成品にあつては、その周辺をシールして
いるがために、高吸水性樹脂の脱落の問題は起ら
ない。しかし後者の不織布でサンドイツチしてな
るシートは、各種用途に供するための中間素材で
あるためその加工過程において、あるいは特別な
加工なしに断切だけの状態で吸水使用する場合に
おいて、高吸水性樹脂の脱落が問題となる。この
高吸水性樹脂の脱落防止のため一般には接着剤が
用いられている。このように接着剤を用いての高
吸水性樹脂の保持では、使用する接着剤の量によ
つて、最終的に得られるシートの性能が左右され
るためその使用量のコントロールがきわめて困難
である。すなわち、高吸水性樹脂の量に対して接
着剤の量が少なすぎると保持力が弱く、脱落防止
の目的が達成されない。反面、高吸水性樹脂の量
に対して接着剤の量が多すぎると高吸水性樹脂本
来の吸水性能が阻害され、充分に満足な吸水性を
発揮するシートは得られない。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a nonwoven sheet that is capable of absorbing and retaining an extremely large amount of water relative to the volume of the sheet itself. Recently, super-absorbent resins that can absorb and retain several hundred times their own weight in water and do not release even a single ounce of absorbed water even when subjected to slight pressure have been generally provided in powder or scale form.
Products using this technology are being developed. For example, by using this super absorbent resin as one of the constituent materials, sanitary napkins that are extremely thin compared to conventional ones are provided, and paper diapers that have high water absorption performance and are not sticky are provided. Furthermore, sheets made by sandwiching this highly water-absorbent resin with non-woven fabric have also recently been provided. In most cases, powdered superabsorbent resin is sandwiched between two sheets of paper or non-woven fabric, and in the case of finished products such as sanitary napkins and disposable diapers, Since the periphery is sealed, there is no problem of the super absorbent resin falling off. However, since the latter non-woven fabric sheet is an intermediate material used for various purposes, it is difficult to use super absorbent resin during the processing process or when using it by cutting it without any special processing. Falling off becomes a problem. An adhesive is generally used to prevent the superabsorbent resin from falling off. In this way, when using adhesives to hold superabsorbent resins, the performance of the final sheet depends on the amount of adhesive used, so it is extremely difficult to control the amount used. . That is, if the amount of adhesive is too small relative to the amount of superabsorbent resin, the holding force will be weak and the purpose of preventing falling off will not be achieved. On the other hand, if the amount of adhesive is too large relative to the amount of superabsorbent resin, the water absorption performance inherent to the superabsorbent resin will be inhibited, and a sheet that exhibits sufficiently satisfactory water absorption will not be obtained.
本発明は、不織布の間に高吸水性樹脂を接着剤
を用いることなく完全に保持せしめ得たものであ
る。本発明は、平均繊維径10μm以下の極細繊維
がランダムに集積してなる極細繊維不織布２枚の
間に高吸水性樹脂（粉末状、鱗片状等）を介在せ
しめ、これにニードルパンチングを施したことを
特徴とする高吸水性不織シートに関するものであ
り、特に好ましくはニードルパンチングのパンチ
密度を100〜1000パンチ／cm2にすること、ならび
に完成品すなわち高吸水性不織シートの構成にお
いて極細繊維不織布成分ｆと高吸水性樹脂成分ｒ
とが、その重量比でｒ／ｆ＝0.002〜0.2であるこ
とを特徴とする高吸水性不織シートに関するもの
である。すなわち、10μm以下の極細繊維でなる
不織布を高吸水性樹脂の狭持用素材として用い、
これにニードルパンチングを施すことによつて目
的を達成しているのである。つまり、10μm以下
という極細繊維およびその集合体は、そこに接触
共存する他物体への優れた絡み能力を本質的に有
するものであり、この共存状態においてニードル
パンチングを施すことで、極細繊維の他物体への
絡み効果をより一層助長するものである。 The present invention makes it possible to completely hold a superabsorbent resin between nonwoven fabrics without using an adhesive. In the present invention, a super absorbent resin (in powder form, scale form, etc.) is interposed between two sheets of ultrafine fiber nonwoven fabric made of randomly accumulated ultrafine fibers with an average fiber diameter of 10 μm or less, and needle punching is performed on this. The present invention relates to a highly water-absorbent nonwoven sheet, and it is particularly preferable that the punch density of needle punching be 100 to 1000 punches/cm 2 , and that the finished product, that is, the highly water-absorbent nonwoven sheet, be extremely fine in its composition. Fiber nonwoven fabric component f and super absorbent resin component r
and a weight ratio of r/f=0.002 to 0.2. In other words, a nonwoven fabric made of ultrafine fibers of 10 μm or less is used as a material for holding the superabsorbent resin,
The purpose is achieved by applying needle punching to this. In other words, ultrafine fibers of 10 μm or less and their aggregates inherently have an excellent ability to entangle other objects that coexist in contact with them, and by performing needle punching in this coexistence state, ultrafine fibers and other objects can be entangled with each other. This further promotes the entanglement effect with objects.
本発明はこのような極細繊維の絡み効果を利用
することによつて、接着剤を使用することなく高
吸水性樹脂を不織布内に良く保持し、接着剤不使
用であるが故に高吸水性樹脂本来の吸水性能を阻
害させることなく、その性能を完全に発揮せしめ
得た不織シートを提供するものである。 By utilizing the entangling effect of such microfibers, the present invention can retain the superabsorbent resin well within the nonwoven fabric without using adhesives, and since no adhesive is used, the superabsorbent resin To provide a nonwoven sheet that can fully exhibit its original water absorption performance without inhibiting its original water absorption performance.
本発明においては、極細繊維と高吸水性樹脂と
の組み合わせ体にニードルパンチング処理を施す
ことによつて優れた高吸水性不織シートを提供す
るものではあるが、さらにニードルパンチングの
密度を100〜1000パンチ／cm2に、また狭持用素材
である極細繊維不織布成分ｆと高吸水性樹脂成分
ｒとをその重量比でｒ／ｆ＝0.002〜0.2に設定す
ることによつて、より高性能の高吸水性不織シー
トが得られるのであるが、その理由は以下のとお
りである。 In the present invention, an excellent superabsorbent nonwoven sheet is provided by subjecting a combination of ultrafine fibers and a superabsorbent resin to a needle punching process, but the density of the needle punching is further increased from 100 to 100. 1000 punches/cm 2 , and by setting the weight ratio of the ultrafine fiber nonwoven fabric component f and the super absorbent resin component r, which are the holding materials, to r/f = 0.002 to 0.2, higher performance can be achieved. The reason for this is as follows.
まず、ニードルパンチング密度の好ましい範囲
を100〜1000パンチ／cm2とするのは、100パンチ／
cm2に満たないと高吸水性樹脂保持効果の助長がそ
れほど顕著には現われず、一方1000パンチ／cm2よ
りも高ければ、シートが緊縮しすぎて充分満足す
べき吸水性が発揮されないのである。 First, the preferred range of needle punching density is 100 to 1000 punches/ cm2 .
If it is less than 1,000 punches/cm 2 , the effect of retaining the superabsorbent resin will not be so pronounced, while if it is higher than 1000 punches/cm 2 , the sheet will become too tight and will not exhibit sufficient water absorbency. .
次に、極細繊維不織布成分ｆと高吸水性樹脂成
分ｒとの重量比の好ましい範囲をｒ／ｆ＝0.002
〜0.2とするのは、以下では高吸水性樹脂の保持
効果が満足でなく一方以上では高吸水性樹脂に比
べて極細繊維不織布が多すぎ、これが高吸水性樹
脂の吸水能力を阻害する結果となるのである。 Next, the preferred range of the weight ratio of the ultrafine fiber nonwoven fabric component f and the superabsorbent resin component r is r/f=0.002.
The reason why the value is set at ~0.2 is that the retention effect of the superabsorbent resin is not satisfactory if it is less than that, and if it is more than the other hand, there is too much microfiber nonwoven fabric compared to the superabsorbent resin, which inhibits the water absorption ability of the superabsorbent resin. It will become.
以上詳述したごとく、本発明の高吸水性不織シ
ートは、高吸水性樹脂の保持に接着剤を使用して
いないにもかかわらず、乾燥、吸水いづれの状態
にあつても高吸水性樹脂の脱落がなく、自由にカ
ツトし、その切断端を特にシールすることなく使
用することが可能である。 As detailed above, although the superabsorbent nonwoven sheet of the present invention does not use an adhesive to hold the superabsorbent resin, the superabsorbent nonwoven sheet retains the superabsorbent resin even in both dry and water-absorbed states. It does not fall off, can be cut freely, and can be used without sealing the cut end.
また接着剤を使用していないがために、内部保
持の高吸水性樹脂の吸水性能を阻害することな
く、これを充分に発揮せしめるものである。 Furthermore, since no adhesive is used, the water absorbing performance of the super absorbent resin held inside is not inhibited and can be fully utilized.
本発明で用いられる極細繊維不織布は、10μm
以下の極細繊維で構成されておればよくその形成
方法を特に限定するものではない。例えば、メル
トブロー法によつて得られた極細繊維を集積した
ものが用いられる。またその種類も特に限定しな
いが、本発明の高吸水性という目的をより高度に
発揮せしめるためには繊維成分自体も例えばナイ
ロン繊維のような吸水性能を有する方が好まし
い。本発明の高吸水性不織シートは、種々加工す
ることによつて多くの用途に供する中間素材では
あるが、これを単に適宜大きさにウエルダーカツ
トあるいはヒートカツトしたものはそのままでワ
イピングクロス等の用途に供し得る。 The ultrafine fiber nonwoven fabric used in the present invention has a diameter of 10 μm.
There is no particular limitation on the method of forming the fiber as long as it is composed of the following ultrafine fibers. For example, a collection of ultrafine fibers obtained by a melt blow method is used. Although the type thereof is not particularly limited, it is preferable that the fiber component itself has water absorption performance, such as nylon fiber, in order to achieve the purpose of high water absorption according to the present invention. The highly water-absorbent nonwoven sheet of the present invention is an intermediate material that can be used for many purposes by being processed in various ways, but it can be simply welded or heat cut to an appropriate size and used as is for wiping cloths, etc. It can be used for
本発明によつて得られる高吸水性不織シート
は、例えば上述したワイピングクロスの他、生理
用ナプキン、オムツ、園芸用保水シート、壁材、
天井材用結露防止シート等その用途はきわめて広
いものである。 The superabsorbent nonwoven sheet obtained by the present invention can be used, for example, in addition to the above-mentioned wiping cloth, sanitary napkins, diapers, water retaining sheets for gardening, wall materials, etc.
Its uses are extremely wide, including dew condensation prevention sheets for ceiling materials.
以下実施例によつて本発明を具体的に説明す
る。 The present invention will be specifically explained below using Examples.
実施例
メルトブロー法で作られた平均径5μmの６―ナ
イロン極細繊維でなる100ｇ／m2の極細繊維不織
布の片面に、高吸水性樹脂（サンウエツトIM―
300三洋化成株式会社製）10ｇ／m2を散布し、そ
の上に上記と同じ極細繊維不織布を重ね合せ、パ
ンチ密度170パンチ／cm2のニードルパンチングを
表裏交互に合計５回行つた。以上によつて得られ
た高吸水性不織シートは、極細繊維不織布成分と
高吸水性樹脂成分との重量比が0.02であつて、こ
のものの吸水性能は吸水率950％というきわめて
優れたものでり、乾燥状態、吸水状態いづれにお
いても高吸水性樹脂の脱落はなかつた。Example A super water absorbent resin (Sunwet IM-
300 (manufactured by Sanyo Kasei Co., Ltd.) at 10 g/m 2 , and the same ultrafine fiber nonwoven fabric as above was superimposed on it, and needle punching at a punch density of 170 punches/cm 2 was performed for a total of 5 times on the front and back sides alternately. The superabsorbent nonwoven sheet obtained in the above manner has an extremely excellent water absorption performance with a water absorption rate of 950%, with a weight ratio of the ultrafine fiber nonwoven fabric component and the superabsorbent resin component of 0.02. The superabsorbent resin did not fall off in either the dry state or the water-absorbed state.
また、上記高吸水性不織シートを30cm×30cmの
大きさにウエルダーカツトしたものは、きめ細か
でソフトな表面状態と高吸水性能とを備えたワイ
ピングクロスとして非常に優れたものであつた。 Furthermore, the above superabsorbent nonwoven sheet was welded into a size of 30 cm x 30 cm and was an excellent wiping cloth with a fine, soft surface and high water absorption performance.
Claims (1)
に集積してなる２枚の極細繊維不織布の間に高吸
水性樹脂を介在せしめ、これにニードルパンチン
グを施したことを特徴とする高吸水性不織シー
ト。 ２ ニードルパンチング密度が100〜1000パン
チ／cm2である特許請求の範囲第１項記載の高吸水
性不織シート。 ３ 極細繊維不織布成分ｆと高吸水性樹脂成分ｒ
との重量比がｒ／ｆ＝0.002〜0.2である特許請求
の範囲第１項または第２項記載の高吸水性不織シ
ート。 ４ 平均繊維径10μm以下の極細繊維がランダム
に集積してなる２枚の極細繊維不織布の間に高吸
水性樹脂を介在せしめ、これにニードルパンチン
グを施して後、適宜大きさにウエルダーカツトま
たはヒートカツトしたことを特徴とする高吸水性
不織シート。 ５ ニードルパンチング密度が100〜1000パン
チ／cm2である特許請求の範囲第４項記載の高吸水
性不織シート。 ６ 極細繊維不織布成分ｆと高吸水性樹脂成分ｒ
との重量比がｒ／ｆ＝0.002〜0.2である特許請求
の範囲第４項または第５項記載の高吸水性不織シ
ート。[Claims] 1. A super absorbent resin is interposed between two sheets of ultrafine fiber nonwoven fabric made of randomly accumulated ultrafine fibers with an average fiber diameter of 10 μm or less, and needle punching is performed on this. Highly absorbent nonwoven sheet. 2. The superabsorbent nonwoven sheet according to claim 1, having a needle punching density of 100 to 1000 punches/cm 2 . 3 Ultrafine fiber nonwoven fabric component f and super absorbent resin component r
The highly water-absorbent nonwoven sheet according to claim 1 or 2, wherein the weight ratio of r/f to r/f is 0.002 to 0.2. 4 A super absorbent resin is interposed between two pieces of ultrafine nonwoven fabric made of randomly accumulated ultrafine fibers with an average fiber diameter of 10 μm or less, and after needle punching, welder cut or heat cut to an appropriate size. Highly absorbent nonwoven sheet. 5. The superabsorbent nonwoven sheet according to claim 4, having a needle punching density of 100 to 1000 punches/cm 2 . 6 Ultrafine fiber nonwoven fabric component f and super absorbent resin component r
The highly water-absorbent nonwoven sheet according to claim 4 or 5, wherein the weight ratio of r/f to r/f is 0.002 to 0.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3415880A JPS56134249A (en) | 1980-03-19 | 1980-03-19 | High water absorbale nonwoven sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3415880A JPS56134249A (en) | 1980-03-19 | 1980-03-19 | High water absorbale nonwoven sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56134249A JPS56134249A (en) | 1981-10-20 |
| JPS633062B2 true JPS633062B2 (en) | 1988-01-21 |
Family
ID=12406389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3415880A Granted JPS56134249A (en) | 1980-03-19 | 1980-03-19 | High water absorbale nonwoven sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56134249A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010004895A1 (en) * | 2008-07-11 | 2010-01-14 | 住友精化株式会社 | Water absorbing sheet composite |
| WO2010004894A1 (en) * | 2008-07-11 | 2010-01-14 | 住友精化株式会社 | Water-absorbent sheet composition |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6270196U (en) * | 1985-10-21 | 1987-05-02 | ||
| JPH01157655U (en) * | 1988-04-19 | 1989-10-31 | ||
| JP2612128B2 (en) * | 1992-03-30 | 1997-05-21 | キヤノン株式会社 | Lens device |
| JP2612151B2 (en) * | 1994-07-18 | 1997-05-21 | キヤノン株式会社 | Camera lens equipment |
| JP2644450B2 (en) * | 1994-07-18 | 1997-08-25 | キヤノン株式会社 | Lens unit guide device |
| JP6367008B2 (en) * | 2014-06-02 | 2018-08-01 | 株式会社ダイセル | Absorber manufacturing method and absorber manufacturing apparatus |
| JP2018164753A (en) * | 2018-07-03 | 2018-10-25 | 株式会社ダイセル | Absorber manufacturing method and absorber manufacturing apparatus |
-
1980
- 1980-03-19 JP JP3415880A patent/JPS56134249A/en active Granted
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010004895A1 (en) * | 2008-07-11 | 2010-01-14 | 住友精化株式会社 | Water absorbing sheet composite |
| WO2010004894A1 (en) * | 2008-07-11 | 2010-01-14 | 住友精化株式会社 | Water-absorbent sheet composition |
| JPWO2010004894A1 (en) * | 2008-07-11 | 2012-01-05 | 住友精化株式会社 | Water absorbent sheet composition |
| JP5345145B2 (en) * | 2008-07-11 | 2013-11-20 | 住友精化株式会社 | Water absorbent sheet composition |
| AU2009269278B2 (en) * | 2008-07-11 | 2015-04-09 | Sumitomo Seika Chemicals Co., Ltd. | Water-absorbent sheet composition |
| AU2009269279B2 (en) * | 2008-07-11 | 2015-04-09 | Sumitomo Seika Chemicals Co., Ltd. | Water-Absorbent Sheet Composition |
| AU2009269278C1 (en) * | 2008-07-11 | 2015-08-27 | Sumitomo Seika Chemicals Co., Ltd. | Water-absorbent sheet composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56134249A (en) | 1981-10-20 |
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