JPH0657610A - Highly water-absorbable nonwoven fabric material - Google Patents
Highly water-absorbable nonwoven fabric materialInfo
- Publication number
- JPH0657610A JPH0657610A JP23779492A JP23779492A JPH0657610A JP H0657610 A JPH0657610 A JP H0657610A JP 23779492 A JP23779492 A JP 23779492A JP 23779492 A JP23779492 A JP 23779492A JP H0657610 A JPH0657610 A JP H0657610A
- Authority
- JP
- Japan
- Prior art keywords
- water
- nonwoven fabric
- fiber
- absorbent
- woven 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.)
- Granted
Links
Landscapes
- Nonwoven Fabrics (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は極めて大きな吸水能力を
有した繊維を含有した不織布材料に関する。FIELD OF THE INVENTION The present invention relates to a non-woven material containing fibers having an extremely large water absorption capacity.
【０００２】[0002]
【従来の技術】吸水性を有した高分子体は、衛生用品等
の材料として一般化しつつあり、近年ではより吸水能力
を高めて、自重の数十〜数百倍もの吸水能力を有した所
謂超高吸水性ポリマーも開発されている。このように自
重の数百倍もの吸水能力を有した超高吸水性ポリマーに
なると、その用途は従来の衛生材料のみに留まらず、土
木分野、医療分野、農園芸分野、食品包装分野、新機能
材料分野等多数の応用分野が考えられる。2. Description of the Related Art Polymers having water absorbency are becoming popular as a material for sanitary goods and the like, and in recent years, the water absorbency has been increased to a so-called tens to hundreds of times its own weight. Ultra-super absorbent polymers have also been developed. In this way, when it comes to an ultra-super absorbent polymer that has a water absorption capacity of several hundred times its own weight, its applications are not limited to conventional sanitary materials, but also civil engineering fields, medical fields, agricultural and horticultural fields, food packaging fields, new functions. Many application fields such as materials field can be considered.
【０００３】ただ、現在の高吸水性ポリマーはこれを自
由な形状に成形することが困難であって顆粒状等で用い
られることが多い。このため、前記の如く新たな用途へ
の応用を考えても、実際に適用しようとするとその加工
が障害となることが多々あった。However, current superabsorbent polymers are difficult to mold into free shapes and are often used in granular form. For this reason, even if the application to a new use is considered as described above, the processing is often an obstacle when actually applied.
【０００４】一方、形状を繊維状とすれば、織編・不織
布などの布帛化技術をもって、均一にしかも他の素材と
混用して高吸水ポリマーを用いることができ、后次の成
形加工も容易であるため材料の形状としては好都合であ
る。ところが、高吸水性ポリマーは強力が極めて低く、
これを繊維化すると単独では一般の用途に耐え得ない程
度の糸しか得られない。このため特開昭５８−３１１４
９号公報等では、複合紡糸技術を用いて高吸水性ポリマ
ーと強力のあるポリマーとを併用することなどが記載さ
れている。しかし、高吸水ポリマーの比率が低下すれば
それだけ吸水能力の低下は否めず、新規用途への応用の
障害となっていた。On the other hand, if the shape is fibrous, the superabsorbent polymer can be used uniformly and mixed with other materials by using the technique of woven or knitted fabric, and the subsequent molding process is easy. Therefore, the shape of the material is convenient. However, the super absorbent polymer has extremely low strength,
If it is made into fibers, it is possible to obtain only yarns that cannot withstand general use by themselves. For this reason, JP-A-58-3114
In Japanese Patent Publication No. 9 and the like, it is described that a super absorbent polymer and a strong polymer are used in combination using a composite spinning technique. However, if the ratio of the highly water-absorbing polymer is decreased, the water-absorbing ability is unavoidably decreased, which has been an obstacle to application to new applications.
【０００５】複合紡糸技術に因らずに、高吸水ポリマー
単独からなる糸を他の繊維と併用して布帛状物を製造す
るものとしては、特開昭３−９７９４８号公報や特開昭
３−４５７６９号公報に熱融着繊維と併用して不織布と
なすことが、特開昭２−８０２３６号公報に高捲縮繊維
と併用して不織布となすことが夫々記載されている。Japanese Patent Application Laid-Open No. 3-97948 and Japanese Patent Application Laid-Open No. 3948/1994 are known as a method for producing a fabric-like article by using a yarn made of a superabsorbent polymer alone together with other fibers, irrespective of the composite spinning technique. -45769 describes that a non-woven fabric is formed by using heat-sealing fibers together, and JP-A-2-80236 describes that a non-woven fabric is formed by using high-crimped fibers.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、前記の
如き従来技術には次の問題点が存在する。すなはち、高
吸水繊維として自重の数百倍もの吸水能力を有するもの
を用いる場合、水を吸うと該繊維は膨潤してその体積が
肥大する。更に、このような高吸水繊維は一般に強力が
低いのが常である。However, the above-mentioned conventional techniques have the following problems. That is, when a highly water-absorbent fiber having a water absorption capacity of several hundred times its own weight is used, the fiber swells and its volume increases when water is absorbed. Furthermore, such superabsorbent fibers generally have low strength.
【０００７】このため、特開昭３−９７９４８号公報や
特開昭３−４５７６９号公報に開示された如く、熱融着
繊維を用いて不織布構造を強化することが行われるので
あるが、熱融着繊維のみで不織布の構造を固定してしま
うと、体積の肥大分を吸収することが困難となって実際
上吸水量を高めることができない。Therefore, as disclosed in JP-A-3-97948 and JP-A-3-45769, the structure of the non-woven fabric is strengthened by using the heat fusion fiber. If the structure of the non-woven fabric is fixed only by the fusion-bonded fibers, it is difficult to absorb the volume expansion, and the water absorption amount cannot be practically increased.
【０００８】また、特開昭２−８０２３６号公報では、
中間層に熱融着繊維を用いず代わりに上下層に熱融着繊
維を用いて補強を行い、中間層ではクッション性を高め
るため高捲縮繊維と併用することが開示されているが、
中間層での高吸水繊維の体積肥大分の吸収は可能となっ
ても、上下層は高吸水繊維の体積肥大分を吸収できない
ため、結局吸水量を高めることができない。Further, in Japanese Patent Application Laid-Open No. 2-80236,
It is disclosed that the intermediate layer is reinforced by using the heat fusion fiber in the upper and lower layers instead of using the heat fusion fiber, and the intermediate layer is used in combination with the highly crimped fiber in order to enhance the cushioning property.
Even if the middle layer can absorb the volume expansion of the super absorbent fiber, the upper and lower layers cannot absorb the volume expansion of the super absorbent fiber, so that the water absorption cannot be increased.
【０００９】本発明はかかる問題点を解決するものであ
って、極めて大きな吸水性能を有ししかも種々の材料素
材として充分な強力を有した不織布材料を提供すること
を目的とする。The present invention is intended to solve such problems, and an object thereof is to provide a non-woven fabric material having extremely large water absorption performance and having sufficient strength as various material materials.
【００１０】[0010]
【課題を解決するための手段】本発明は、吸水量１０ｇ
／ｇ以上の高吸水性繊維からなる吸水性不織布層の少な
くとも片面に、伸度５０％以上の伸縮性不織布層が積層
され、部分的に一体化されたことを特徴とする高吸水性
不織布材料である。The present invention has a water absorption of 10 g.
/ G or more superabsorbent fiber made of superabsorbent fiber, at least one surface of the stretchable nonwoven layer having an elongation of 50% or more is laminated and partially integrated, a superabsorbent nonwoven material Is.
【００１１】本発明で用いる高吸水性繊維は、試料を
０．９％食塩水２００ｃｃ入りのビーカー内に浸漬して
５分間放置した後取り出し１０メッシュの金網上に１分
間放置した後の重量と吸水前の重量との差によって求め
られる吸水量が１０ｇ／ｇ以上と極めて高く、自重の１
０倍以上の吸水能力を有するものである。また、繊維化
にあたっては、該高吸水ポリマー単独で紡糸を行うこと
が好ましく、複合紡糸手段等を用いると前記吸水能力を
維持することが困難である。The superabsorbent fiber used in the present invention is the weight after the sample is dipped in a beaker containing 200 cc of 0.9% saline and left for 5 minutes and then taken out for 1 minute on a wire mesh of 10 mesh. The water absorption obtained by the difference from the weight before water absorption is extremely high at 10 g / g or more, which is 1 of its own weight.
It has a water absorption capacity of 0 times or more. In addition, it is preferable that the superabsorbent polymer is spun alone when the fiber is formed, and it is difficult to maintain the water absorption capacity by using a composite spinning means or the like.
【００１２】このような高吸水性繊維としては、例えば
エステル架橋結合を含む非水溶性鎖状ポリマーからなる
ものが挙げられ、たとえば特開昭６３−１５９４０５号
公報及び特開昭６３−１５９４４０号公報に記載された
ものがある。Examples of such super absorbent fibers include those made of a water-insoluble chain polymer containing an ester cross-linking bond. For example, JP-A 63-159405 and JP-A 63-159440. There is one described in.
【００１３】該繊維の繊度は一般に不織布化が容易な１
〜３０デニールが好ましく、繊維長５〜１５０ｍｍのス
テープルとして不織布化を行うことが望ましい。The fineness of the fiber is generally 1 which makes it easy to form a non-woven fabric.
-30 denier is preferable, and it is desirable to make a nonwoven fabric as a staple having a fiber length of 5-150 mm.
【００１４】本発明の吸水性不織布層は、前記の高吸水
繊維からなるものであるが、高吸水性繊維の含有量は高
々９０重量％程度とすることが強力の点で好ましく、一
方、吸水効果が顕著となる１０重量％程度以上の含有量
とすることが好ましい。更に、吸水性不織布層には後述
するような高捲縮繊維を併用すると吸水性能が向上する
ため好ましい。また勿論、吸水性不織布層には他の第３
成分を含有していてもよい。吸水性不織布層の目付は本
発明の用途に応じて適宜選択すればよいが、一般に２５
〜２５０ｇ／ｍ2 程度のものが扱い易い。The water-absorbent nonwoven fabric layer of the present invention comprises the above-mentioned highly water-absorbent fibers, and it is preferable that the content of the highly water-absorbent fibers is at most about 90% by weight in view of its strength. The content is preferably about 10% by weight or more at which the effect becomes remarkable. Furthermore, it is preferable to use a highly crimped fiber as described later together in the water absorbent nonwoven fabric layer because the water absorbing performance is improved. In addition, of course, the water-absorbent non-woven fabric layer may have other third
You may contain the component. The basis weight of the water-absorbent nonwoven fabric layer may be appropriately selected according to the application of the present invention, but is generally 25
The thing of about 250 g / m 2 is easy to handle.
【００１５】本発明の不織布材料は、かかる吸水性不織
布層の少なくとも片面に以下の伸縮性不織布層が積層さ
れたものである。伸縮性不織布層は、伸度５０％以上の
不織布であって、経緯両方向に５０％以上の伸度を有す
るものが好ましく、１００％伸長時の応力が５００ｇ／
ｃｍ以下のものが好ましい。The non-woven fabric material of the present invention is one in which the following stretchable non-woven fabric layer is laminated on at least one surface of such a water-absorbent non-woven fabric layer. The stretchable non-woven fabric layer is preferably a non-woven fabric having an elongation of 50% or more and having an elongation of 50% or more in both longitudinal and longitudinal directions, and a stress at 100% elongation is 500 g /
Those of cm or less are preferable.
【００１６】このような、高伸度不織布は、種々の方法
により得られるが、例えば国際公開ＷＯ８８／０９３８
号公報等に記載された如く、熱収縮性の異なる２種の成
分をサイドバイサイド等の偏芯状に接合してなる複合繊
維に、熱処理を施して、スパイラルクリンプを発現せし
めた高捲縮繊維を用いる方法や、特公平１−３０９４５
号公報や特公昭６４−８７４６号公報等に記載された如
く、ポリウレタン弾性体フィラメント等の高弾性繊維を
用いる方法等がある。[0016] Such a high elongation nonwoven fabric can be obtained by various methods, for example, International Publication WO88 / 0938.
As described in Japanese Unexamined Patent Publication (Kokai), a composite fiber obtained by joining two kinds of components having different heat shrinkability in an eccentric shape such as side-by-side is subjected to heat treatment to obtain a highly crimped fiber having a spiral crimp. Method used and Japanese Patent Publication 1-30945
As described in Japanese Patent Publication No. 64-8746 and Japanese Patent Publication No. 64-8746, there is a method of using a highly elastic fiber such as a polyurethane elastic filament.
【００１７】以下、図面を用いて本発明を説明する。図
１は、高捲縮繊維を用いた本不織布の断面図であって、
１は高吸水繊維、２は熱融着繊維を示す。吸水性不織布
層（Ａ）は、熱融着繊維の溶融により繊維の交差部分
（３）が融着して網目状構造をなしている。The present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of the present non-woven fabric using highly crimped fibers,
Reference numeral 1 is a highly water-absorbent fiber, and 2 is a heat fusion fiber. The water-absorbent nonwoven fabric layer (A) has a network structure in which the intersecting portions (3) of the fibers are fused by the fusion of the heat-fusible fibers.
【００１８】高吸水繊維（１）と混用する熱融着繊維
（２）としては、公知の種々のものが用い得るが、芯部
にポリエステルやポリアミド等の高融点成分、鞘部にポ
リエチレンや共重合ポリエステル等の低融点成分を用い
て芯鞘状に複合紡糸したものが好ましく、８０〜１５０
℃程度で融着可能なものが挙げられる。As the heat-fusible fiber (2) to be mixed with the highly water-absorbent fiber (1), various known ones can be used. The core portion has a high melting point component such as polyester or polyamide, and the sheath portion has polyethylene or copolyester. Composite spinning in a core-sheath form using a low melting point component such as polymerized polyester is preferable, and 80 to 150
One that can be fused at about ℃ is mentioned.
【００１９】該熱融着繊維（２）の繊度も高吸水性繊維
と同程度の１〜３０デニールが好ましく、繊維長１０〜
１００ｍｍのステープルで用いるとよい。また、熱融着
繊維（２）は９０〜１０重量％の範囲で均一に高吸水繊
維（１）と混合することが好ましい。The fineness of the heat-fusible fiber (2) is preferably 1 to 30 denier, which is the same level as the super absorbent fiber, and the fiber length is 10 to 10.
It is recommended to use a 100 mm staple. Further, it is preferable that the heat-fusible fiber (2) is uniformly mixed with the highly water-absorbent fiber (1) in the range of 90 to 10% by weight.
【００２０】伸縮性不織布層（Ｂ）は、前記熱融着繊維
（２）と高捲縮繊維（４）とを用いたもので、該高捲縮
繊維（４）としては、ポリエチレンテレフタレートと金
属スルホネート基等を共重合した所謂カチオン可染ポリ
エステルとを接合したもの等が挙げられ、繊度は、１〜
２０デニール、繊維長は３０〜１００ｍｍが好ましい。
さらに、高捲縮繊維（４）は１０〜９０重量％、熱融着
繊維（２）は９０〜１０重量％を均一に混合して目付１
０〜５０ｇ／ｍ2 程度の不織布となすことが好ましく、
このような原反をフリーテンション下で熱処理してスパ
イラルクリンプを発現せしめ伸度を５０％以上とする。The stretchable non-woven fabric layer (B) comprises the above-mentioned heat-sealing fibers (2) and highly crimped fibers (4), and the highly crimped fibers (4) include polyethylene terephthalate and metal. Examples thereof include those in which a so-called cationic dyeable polyester obtained by copolymerizing a sulfonate group or the like is joined, and the fineness is 1 to
20 denier and the fiber length is preferably 30 to 100 mm.
Further, the highly crimped fiber (4) is uniformly mixed in an amount of 10 to 90% by weight, and the heat-sealing fiber (2) is uniformly mixed in an amount of 90 to 10% by weight.
It is preferable to use a non-woven fabric of about 0 to 50 g / m 2 ,
Such a raw material is heat-treated under free tension to develop a spiral crimp and have an elongation of 50% or more.
【００２１】次に、図２は高弾性繊維を用いた本不織布
の断面図であって、吸水性不織布層（Ａ）は、図１と同
様であるが、伸縮性不織布層（Ｂ）は、高弾性繊維
（５）からなるもので、熱可塑性ポリウレタン弾性体に
ポリイソシアネート化合物を添加し、高速気流に随伴さ
せて噴出させシート状に堆積、捕集して自己の熱融着に
より交点を接着せしめて不織布化したものである。かか
る不織布の場合、ポリウレタン弾性体フィラメントは３
０μ以下の極細モノフィラメントとなっており、微細な
３次元網目構造をなしている。該不織布の目付は用途に
もよるが、２０〜１００ｇ／ｍ2 程度が好ましく１００
％伸長時の応力は５００ｇ／ｃｍ以下となるであろう。Next, FIG. 2 is a cross-sectional view of this non-woven fabric using highly elastic fibers. The water-absorbent non-woven fabric layer (A) is the same as that in FIG. 1, but the stretchable non-woven fabric layer (B) is Consisting of highly elastic fibers (5), a polyisocyanate compound is added to a thermoplastic polyurethane elastic body, ejected along with a high-speed air stream, ejected, accumulated in a sheet form, collected, and bonded at intersections by self-heat fusion. At the very least, it is a non-woven fabric. In the case of such a non-woven fabric, the polyurethane elastic filament is 3
It is an ultrafine monofilament of 0 μ or less, and has a fine three-dimensional network structure. The unit weight of the non-woven fabric depends on the application, but is preferably about 20 to 100 g / m 2.
The% elongation stress will be less than 500 g / cm.
【００２２】本不織布材料は、前記の如き吸水性不織布
層（Ａ）と伸縮性不織布層（Ｂ）とが積層され部分的に
一体化されたものである。吸水性不織布層（Ａ）と伸縮
性不織布層（Ｂ）とを部分的に一体化する方法として
は、ニードリング法、エンボス法、接着法等の方法が採
り得、接着面積が積層面の２５％以下で散在しているこ
とが好ましい。尚、ここでいう接着面積とは、例えばエ
ンボス法であればロールのエンボス面の設計面積をもっ
て代用し、他の接着法ではこれに準じて算出を行う。The non-woven fabric material of the present invention comprises the water-absorbent non-woven fabric layer (A) and the stretchable non-woven fabric layer (B) which are laminated and partially integrated. As a method for partially integrating the water-absorbent nonwoven fabric layer (A) and the stretchable nonwoven fabric layer (B), a needling method, an embossing method, an adhesion method, or the like can be adopted, and the adhesion area is 25 % Or less is preferable. Note that, for example, in the case of the embossing method, the design area of the embossed surface of the roll is used as a substitute for the adhesion area here, and in other adhesion methods, the calculation is performed according to this.
【００２３】図１では、吸水性不織布層（Ａ）と伸縮性
不織布層（Ｂ）とに同一の熱融着繊維（２）を用いてい
るため、両不織布層に含有されている熱接着繊維（２）
の融着をもって、一体化する方法が最も効率的である。
したがって、水玉柄等を彫刻したエンボスロールによっ
て加熱加圧すれば良い。また、図２の如くウレタン等の
素材を用いた場合は、高周波ウエルダー機等を用いて融
着することも可能である。In FIG. 1, since the same heat-sealing fiber (2) is used for the water-absorbent nonwoven fabric layer (A) and the stretchable nonwoven fabric layer (B), the heat-bonding fibers contained in both nonwoven fabric layers are used. (2)
The most efficient method is to integrate by fusion.
Therefore, it suffices to heat and press with an embossing roll engraved with a polka dot pattern or the like. Further, when a material such as urethane is used as shown in FIG. 2, it is possible to perform fusion bonding using a high frequency welder machine or the like.
【００２４】更に、不織布表面に高吸水繊維（１）を現
出させるかどうかは、不織布材料の用途に応じて選択す
ればよいが、表面には高吸水繊維（１）を現出させない
のであれば、通常のニードルパンチ法は避けた方が良
く、前記の熱融着法等によれば、不織布材料の表面（伸
縮性不織布層（Ｂ）表面）に高吸水繊維（１）が見られ
ることはない。Further, whether or not the super absorbent fiber (1) is exposed on the surface of the non-woven fabric may be selected according to the use of the non-woven fabric material, but the super absorbent fiber (1) is not exposed on the surface. For example, it is better to avoid the ordinary needle punching method, and the highly water-absorbent fiber (1) can be seen on the surface of the nonwoven fabric material (the surface of the elastic nonwoven fabric layer (B)) according to the above-mentioned heat fusion method or the like. There is no.
【００２５】また、伸縮性不織布層（Ｂ）は吸水性不織
布層（Ａ）の少なくとも片面に積層すれば本不織布材料
の強力を保持することや、使用面には高吸水繊維（１）
が存在しないようになすことができるが、勿論吸水性不
織布層（Ａ）の両面に伸縮性不織布層（Ｂ）を用いてサ
ンドウィチ構造としても良い。The stretchable nonwoven fabric layer (B) retains the strength of the nonwoven fabric material by laminating it on at least one side of the water absorbent nonwoven fabric layer (A), and the highly absorbent fiber (1) is used on the use side.
However, it is also possible to use a stretchable nonwoven fabric layer (B) on both sides of the water absorbent nonwoven fabric layer (A) to form a sandwich structure.
【００２６】いずれにしても、本不織布材料全体に対す
る高吸水繊維（１）の使用量は１０重量％以上とすると
充分な吸水能力を有した材料が得られるであろう。尚、
本不織布材料には、染色、柔軟、防炎、抗菌等の各種後
加工が施されていても良いことは勿論である。In any case, if the amount of the highly water-absorbent fiber (1) used in the whole nonwoven fabric material is 10% by weight or more, a material having a sufficient water-absorbing ability will be obtained. still,
Needless to say, the nonwoven fabric material may be subjected to various post-processings such as dyeing, softening, flameproofing and antibacterial.
【００２７】[0027]
【作用】本発明の不織布材料は、極めて吸水量の多い繊
維からなるものである。このような繊維は通常強度に劣
り、不織布等の形状となすことが困難であるが、本発明
では、他の不織布との積層構造となすことにより強度を
保持している。The non-woven fabric material of the present invention comprises fibers having a very high water absorption. Such fibers are usually inferior in strength and difficult to form into a non-woven fabric or the like, but in the present invention, the strength is maintained by forming a laminated structure with another non-woven fabric.
【００２８】更に、該高吸水繊維は、吸水時に繊維が大
きく膨潤し、かかる体積の肥大空間を確保しなければ所
望の吸水量が望めないのであるが、本発明では積層する
不織布に伸度の高いものを用い、加えて部分的に一体化
することにより、吸水時不織布が伸長して前記空間を形
成する。Further, the highly water-absorbent fibers are largely swelled at the time of water absorption, and the desired water absorption amount cannot be expected unless an enlarged space of such a volume is secured. By using a high one, and by additionally partially integrating it, the nonwoven fabric stretches when absorbing water to form the space.
【００２９】[0029]
実施例１、２ アクリル酸ナトリウム、アクリル酸、ヒドロキシプロピ
ルメタクリルレート、アクリル酸メチルを含有するコポ
リマーを特開昭６３−１５９４４０号公報に記載された
方法で紡糸し、８ｄ、５１ｍｍの高吸水繊維ステープル
（イ）を得た。かかる高吸水繊維ステープルの強度は１
ｇ／ｄ、伸度は２．５％、吸水量は７０ｇ／ｇであっ
た。Examples 1 and 2 A copolymer containing sodium acrylate, acrylic acid, hydroxypropylmethacrylate, and methyl acrylate was spun by the method described in JP-A-63-159440, and 8d, 51 mm highly water-absorbent fiber staples were used. I got (a). The strength of such highly absorbent fiber staples is 1
g / d, the elongation was 2.5%, and the water absorption was 70 g / g.
【００３０】また、芯にポリエチレンテレフタレート、
鞘に共重合ポリエステル（軟化点１１０℃）を配した複
合繊維からなる４ｄ、５１ｍｍの熱接着繊維ステープル
（鐘紡製ベルコンビ４０８０）（ロ）と、５−ナトリウ
ム−スルホイソフタル酸を共重合したポリエチレンテレ
フタレート（極限粘度０．５２９）とポリエチレンテレ
フタレート（極限粘度０．６３４）とをサイドバイサイ
ドに接合してなる２．５ｄ、５１ｍｍの複合繊維ステー
プル（ハ）を、混合して、カーディング後クロスラッパ
ーで混合ウエッブを作製し、予備的に軽くニードルパン
チ処理を行って、吸水性不織布を得た。Further, polyethylene terephthalate is used for the core,
Polyethylene terephthalate obtained by copolymerizing 5-d sodium-sulfoisophthalic acid with 4d, 51 mm heat-bonded fiber staple (Belcombi 4080 manufactured by Kanebo Co., Ltd.) (b) made of composite fiber in which copolyester (softening point 110 ° C.) is arranged in a sheath 2.5d, 51mm composite fiber staples (c) obtained by joining polyethylene terephthalate (intrinsic viscosity 0.634) side-by-side (intrinsic viscosity 0.529), and mixing with a cross wrapper after carding. A web was prepared and lightly needle-punched to obtain a water-absorbent nonwoven fabric.
【００３１】一方、前記複合繊維ステープル（ハ）と熱
接着繊維ステープル（ロ）とを、混合して同様に混合ウ
エッブを製作した。次に、両不織布を重ねてフリーテン
ション下で１４０℃の乾熱処理を施し、熱融着繊維を溶
着せしめ、両不織布を一体化したのち、１３０℃でエン
ボス加工を行って部分的に接着した。結果を表１に示
す。On the other hand, the composite fiber staple (c) and the heat-bonding fiber staple (b) were mixed to produce a mixed web in the same manner. Next, both nonwoven fabrics were overlapped and subjected to dry heat treatment at 140 ° C. under free tension to fuse the heat-sealing fibers, and the both nonwoven fabrics were integrated, and then embossed at 130 ° C. to partially bond them. The results are shown in Table 1.
【００３２】[0032]
【表１】 [Table 1]
【００３３】比較例１ 実施例１において、混合ウエッブとして、ポリエチレン
テレフタレートからなる２．５ｄ、５１ｍｍのステープ
ルと熱接着繊維ステープル（ロ）とを混合したものを用
いた他は、全く同様にして不織布材料を得た。結果を表
１に示す。同表より明らかな如く、本発明に係わる不織
布材料は極めて大きな吸水性を示す。Comparative Example 1 A non-woven fabric was prepared in the same manner as in Example 1, except that the mixing web used was a mixture of 2.5 d, 51 mm staple made of polyethylene terephthalate and a heat-bonding fiber staple (b). Got the material. The results are shown in Table 1. As is clear from the table, the non-woven fabric material according to the present invention exhibits extremely high water absorption.
【００３４】実施例３ 実施例１の高吸水繊維ステープル（イ）と、熱接着繊維
ステープル（鐘紡製ベルコンビ４０８０）（ロ）とを８
０：２０の重量比で混綿して実施例１と同様に吸水性不
織布を得た。一方、ポリウレタン弾性体フィラメントが
自己融着により接着してなる伸度４００％、１００％伸
長時の応力１００ｇ／ｃｍのメルトブローン不織布（鐘
紡製エスパンシオーネ）と、該吸水性不織布とを積層
し、ウエルダー加工機により部分的に接着した。結果を
表２に示す。Example 3 The highly water-absorbent fiber staple (a) of Example 1 and the heat-bonding fiber staple (Belcombi 4080 made by Kanebo) (b) were used.
A water absorbent nonwoven fabric was obtained in the same manner as in Example 1 by mixing cotton in a weight ratio of 0:20. On the other hand, a polyurethane elastic filament is adhered by self-fusing to have an elongation of 400%, a melt blown nonwoven fabric (Espansion made by Kanebo) having a stress of 100 g / cm at 100% elongation, and the water absorbent nonwoven fabric are laminated, Partially adhered by a welder machine. The results are shown in Table 2.
【００３５】[0035]
【表２】 [Table 2]
【００３６】比較例２ 実施例２において、接着を湿式法により、全面にわたっ
ておこなった他は、全く同様にして不織布材料を得た。
結果を表２に示す。同表より明らかな如く、本発明に係
わる不織布材料は極めて大きな吸水性を示す。Comparative Example 2 A nonwoven fabric material was obtained in exactly the same manner as in Example 2, except that the adhesion was carried out by the wet method over the entire surface.
The results are shown in Table 2. As is clear from the table, the non-woven fabric material according to the present invention exhibits extremely high water absorption.
【００３７】[0037]
【発明の効果】本発明は、吸水性に優れ、しかも高吸水
性繊維が表面に現れないため、ベタツキ感のない、安全
性に優れた不織布材料であって、各種用途に極めて有用
なものである。INDUSTRIAL APPLICABILITY The present invention is a non-woven fabric material which is excellent in water absorption and does not show superabsorbent fibers on the surface, and is not sticky, and is excellent in safety, and is extremely useful for various purposes. is there.
【００３８】かかる用途としては、種々のものが挙げら
れ特に限定されないが、例えば、吸水マット、食品用ト
レー、養生シート、種菌マット、止水用テープ、汗取り
パッド等がある。Examples of such applications include various ones and are not particularly limited, and examples thereof include a water absorbing mat, a food tray, a curing sheet, an inoculum mat, a water blocking tape, and a sweat removal pad.
【図１】高捲縮繊維を用いた本発明の不織布材料の断面
図である。1 is a cross-sectional view of a nonwoven material of the present invention using highly crimped fibers.
【図２】高弾性繊維を用いた本発明の不織布材料の断面
図である。FIG. 2 is a cross-sectional view of the non-woven material of the present invention using high elasticity fiber.
Claims (1)
らなる吸水性不織布層の少なくとも片面に、伸度５０％
以上の伸縮性不織布層が積層され、部分的に一体化され
たことを特徴とする高吸水性不織布材料1. An elongation of 50% on at least one surface of a water-absorbent nonwoven fabric layer made of highly water-absorbent fibers having a water absorption of 10 g / g or more.
A highly water-absorbent nonwoven material, characterized in that the above stretchable nonwoven layers are laminated and partially integrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23779492A JP3126510B2 (en) | 1992-08-12 | 1992-08-12 | Super absorbent nonwoven material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23779492A JP3126510B2 (en) | 1992-08-12 | 1992-08-12 | Super absorbent nonwoven material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0657610A true JPH0657610A (en) | 1994-03-01 |
| JP3126510B2 JP3126510B2 (en) | 2001-01-22 |
Family
ID=17020529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23779492A Expired - Fee Related JP3126510B2 (en) | 1992-08-12 | 1992-08-12 | Super absorbent nonwoven material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3126510B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6596583B2 (en) | 2000-06-08 | 2003-07-22 | Micron Technology, Inc. | Methods for forming and integrated circuit structures containing ruthenium and tungsten containing layers |
| JP2006104635A (en) * | 2004-10-08 | 2006-04-20 | Kureha Ltd | Nonwoven fabric |
| JP2006283278A (en) * | 2005-03-31 | 2006-10-19 | Daiwabo Co Ltd | Water cutoff vegetative base material |
| JP2012041281A (en) * | 2010-08-17 | 2012-03-01 | Daiwa:Kk | Water absorbing/discharging antibacterial deodorant unit, and rug and spray apparatus applying the same |
| WO2023222291A1 (en) * | 2022-05-19 | 2023-11-23 | Carl Freudenberg Kg | Wound dressing |
-
1992
- 1992-08-12 JP JP23779492A patent/JP3126510B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6596583B2 (en) | 2000-06-08 | 2003-07-22 | Micron Technology, Inc. | Methods for forming and integrated circuit structures containing ruthenium and tungsten containing layers |
| US6833576B2 (en) | 2000-06-08 | 2004-12-21 | Micron Technology, Inc. | Methods for forming and integrated circuit structures containing ruthenium and tungsten containing layers |
| JP2006104635A (en) * | 2004-10-08 | 2006-04-20 | Kureha Ltd | Nonwoven fabric |
| JP2006283278A (en) * | 2005-03-31 | 2006-10-19 | Daiwabo Co Ltd | Water cutoff vegetative base material |
| JP2012041281A (en) * | 2010-08-17 | 2012-03-01 | Daiwa:Kk | Water absorbing/discharging antibacterial deodorant unit, and rug and spray apparatus applying the same |
| WO2023222291A1 (en) * | 2022-05-19 | 2023-11-23 | Carl Freudenberg Kg | Wound dressing |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3126510B2 (en) | 2001-01-22 |
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