JPH07216737A - Water repellent fiber and nonwoven fabric using the same - Google Patents
Water repellent fiber and nonwoven fabric using the sameInfo
- Publication number
- JPH07216737A JPH07216737A JP6031016A JP3101694A JPH07216737A JP H07216737 A JPH07216737 A JP H07216737A JP 6031016 A JP6031016 A JP 6031016A JP 3101694 A JP3101694 A JP 3101694A JP H07216737 A JPH07216737 A JP H07216737A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- water
- fibers
- fiber
- repellent fiber
- 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.)
- Pending
Links
Landscapes
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、紙おむつや生理用ナプ
キンの表面材等に有用な不織布、及びその原料である加
工性に優れた撥水性繊維に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-woven fabric which is useful as a surface material for diapers and sanitary napkins, and a water-repellent fiber which is a raw material thereof and which is excellent in processability.
【0002】[0002]
【従来の技術】紙おむつや生理用ナプキン等の吸収性物
品の表面材は、吸収性物品の中央部には吸収すべき液体
を迅速に吸収材に伝達するための透水性が要求される
が、吸収性物品の端部には吸収すべき液体あるいは一度
吸収した液体の横漏れを防ぐために撥水性であることが
要求される。ポリオレフインやポリエステルからなる繊
維は疎水性で水に濡れにくい性質を有するので、上記の
端部への使用に適している。しかし、吸収性物品の表面
材に要求される性能も高度化し、端部の材料には出来る
だけ小さな不織布重量を保ちながら更に高い撥水性を求
められている。2. Description of the Related Art The surface material of absorbent articles such as paper diapers and sanitary napkins is required to have water permeability in the central part of the absorbent article for promptly transmitting the liquid to be absorbed to the absorbent material. The end of the absorbent article is required to be water repellent in order to prevent side leakage of the liquid to be absorbed or the liquid once absorbed. Fibers made of polyolefin or polyester are hydrophobic and have a property of being difficult to be wet with water, and thus are suitable for use in the above-mentioned end portions. However, the performance required for the surface material of the absorbent article has been enhanced, and the material for the end portion is required to have higher water repellency while keeping the weight of the nonwoven fabric as small as possible.
【0003】ポリオレフインやポリエステルからなる繊
維は疎水性であるが故に極めて帯電し易く、カード機の
シリンダーやガイドロールに巻き付く等の事故を起こし
易く、加工性が悪い。加工性を改良するには、一般には
帯電防止剤を付着させることが行われているが、帯電防
止剤を付着させた繊維は本来の疎水性を失って親水性と
なり、撥水性がなくなる。Since fibers made of polyolefin or polyester are hydrophobic, they are very easily charged with static electricity, tend to cause accidents such as winding around a cylinder of a card machine or a guide roll, and have poor workability. In order to improve the processability, an antistatic agent is generally attached, but the fiber to which the antistatic agent is attached loses its original hydrophobicity and becomes hydrophilic and loses its water repellency.
【0004】疎水性すなわち撥水性と、加工性すなわち
帯電防止性とを同時に満足させる方法として、特公昭6
3−24116号公報には炭素数10〜30のアルキル
リン酸エステル塩等からなる表面改質剤の使用が記載さ
れている。しかし、この方法によっても撥水性について
はまだ満足な結果が得られていない。As a method of simultaneously satisfying both hydrophobicity, that is, water repellency and processability, that is, antistatic property, Japanese Patent Publication No.
JP-A 3-24116 describes the use of a surface modifier composed of an alkyl phosphate ester salt having 10 to 30 carbon atoms. However, even with this method, satisfactory results regarding water repellency have not yet been obtained.
【0005】[0005]
【発明が解決しようとする課題】本発明の目的は、ポリ
オレフインやポリエステルからなる繊維の撥水性と帯電
防止性の両方を実用上満足な程度に同時に改良した繊維
を提供することにある。An object of the present invention is to provide a fiber in which both the water repellency and the antistatic property of a fiber made of polyolefin or polyester are simultaneously improved to a practically satisfactory level.
【0006】[0006]
【課題を解決するための手段】本発明者は上記課題を解
決すべく鋭意研究の結果、以下に示すような発明に到達
した。すなわち、 「(1) ステアリルホスフエートカリ塩(A)40〜
80重量%、ベヘニルホスフエートカリ塩(B)50〜
10重量%及びポリエチレンワックス乳化物(C)50
〜10重量%からなる表面改質材を、繊維重量に対して
0.1〜1.0重量%付着させたことを特徴とする、ポ
リオレフインまたはポリエステルからなる撥水性繊維。 (2) 単糸繊度が1.0〜6.0デニールである上記
(1)項に記載の撥水性繊維。 (3) 上記(1)項又(2)項に記載の撥水性繊維を
30重量%以上と、他の繊維70重量%以下とからなる
不織布。 (4) 目付が8〜50g/m2である上記(3)項に
記載の不織布。」である。Means for Solving the Problems As a result of intensive research to solve the above problems, the present inventor has reached the invention as described below. That is, "(1) Stearyl phosphate potassium salt (A) 40-
80% by weight, behenyl phosphate potassium salt (B) 50 to
10% by weight and polyethylene wax emulsion (C) 50
A water-repellent fiber made of polyolefin or polyester, characterized in that a surface modifier made up of 10% by weight is attached to the fiber at 0.1% to 1.0% by weight. (2) The water-repellent fiber according to item (1), wherein the single yarn fineness is 1.0 to 6.0 denier. (3) A non-woven fabric comprising 30% by weight or more of the water-repellent fiber according to the above (1) or (2) and 70% by weight or less of other fibers. (4) The non-woven fabric according to item (3), which has a basis weight of 8 to 50 g / m 2 . It is.
【0007】本発明で用いるポリオレフインまたはポリ
エステルからなる繊維とは、ポリエチレン繊維、ポリプ
ロピレン繊維、ポリエチレン/ポリプロピレン複合繊
維、ポリプロピレン/エチレン酢酸ビニル共重合体複合
繊維等のポリオレフイン繊維、ポリエチレンテレフタレ
ート繊維、ポリエチレンテレフタレート/ポリエチレン
テレフタレート・イソフタレート共重合体複合繊維等の
ポリエステル繊維、さらにポリエチレンテレフタレート
/ポリエチレン複合繊維等のポリエステル/ポリオレフ
ィン複合繊維を指す。The fibers made of polyolefin or polyester used in the present invention include polyethylene fibers, polypropylene fibers, polyethylene / polypropylene composite fibers, polypropylene / ethylene vinyl acetate copolymer composite fibers, etc., polyolefin fibers, polyethylene terephthalate fibers, polyethylene terephthalate / This refers to polyester fibers such as polyethylene terephthalate / isophthalate copolymer composite fibers, and further polyester / polyolefin composite fibers such as polyethylene terephthalate / polyethylene composite fibers.
【0008】本発明で用いるステアリルホスフエートカ
リ塩は、通常モノ−、ジ−あるいはトリ−エステルの各
種混合体のカリ塩である。本発明においてはそのモノ
−:ジ−:トリ−の割合(重量)が30〜40:50〜
60:5〜15の範囲のものが好適に用いられる。本発
明で用いるベヘニルホスフエートカリ塩も、通常モノ
−、ジ−あるいはトリ−エステルの各種混合体のカリ塩
である。本発明においてはそのモノ−:ジ−:トリ−の
割合(重量)が30〜40:50〜60:5〜15の範
囲のものが好適に用いられる。本発明で用いるポリエチ
レンワックス乳化物は、アニオン系乳化剤あるいはノニ
オン系乳化剤を用いてポリエチレンワックスを乳化した
ものであり、融点が30〜90℃の範囲のものが好まし
く用いられる。The potassium stearyl phosphate used in the present invention is usually a potassium salt of various mixtures of mono-, di- or triesters. In the present invention, the ratio (weight) of the mono-: di-: tri- is from 30 to 40:50.
Those in the range of 60: 5 to 15 are preferably used. The potassium behenyl phosphate salt used in the present invention is also usually a potassium salt of various mixtures of mono-, di- or triesters. In the present invention, a mono-: di-: tri-ratio (weight) of 30-40: 50-60: 5-15 is preferably used. The polyethylene wax emulsion used in the present invention is obtained by emulsifying polyethylene wax with an anionic emulsifier or a nonionic emulsifier, and preferably has a melting point in the range of 30 to 90 ° C.
【0009】本発明で用いる表面改質剤は、上記ステア
リルホスフエートカリ塩(A)、ベヘニルホスフエート
カリ塩(B)およびポリエチレンワックス乳化物(C)
を重量比で、A/B/C=40〜80/50〜10/5
0〜10(全体で100重量%)の範囲にある混合物で
ある。 (A)が40%未満では繊維の制電性が不十分となり、
カード工程でトラブルが生じ易くなり、80%を超すと
撥水性が不十分となる。 (B)が10%以下では繊維の撥水性が不十分であり、
50%を超すと撥水性は向上するが、溶解性が小さいの
で表面改質剤中に析出し、繊維の品質斑が生じるので好
ましくない。 (C)が10%以下では繊維の撥水性が不十分であり、
50%を超すと撥水性は向上するが制電性が悪くなりカ
ード工程でトラブルが生じ易くなる。The surface modifier used in the present invention is the above-mentioned potassium stearyl phosphate salt (A), potassium behenyl phosphate salt (B) and polyethylene wax emulsion (C).
By weight ratio, A / B / C = 40-80 / 50-10 / 5
It is a mixture in the range of 0 to 10 (total 100% by weight). When (A) is less than 40%, the antistatic property of the fiber becomes insufficient,
Problems easily occur in the card process, and if it exceeds 80%, the water repellency becomes insufficient. When (B) is 10% or less, the water repellency of the fiber is insufficient,
If it exceeds 50%, the water repellency will be improved, but since the solubility is low, it will precipitate in the surface modifier and cause unevenness in the quality of the fiber, which is not preferable. When (C) is 10% or less, the water repellency of the fiber is insufficient,
If it exceeds 50%, the water repellency is improved, but the antistatic property is deteriorated and troubles are likely to occur in the card process.
【0010】本発明では上記(A)、(B)及び(C)
からなる表面改質材を繊維重量に対して0.1〜1.0
重量%、好ましくは0.2〜0.8重量%、付着させ
る。付着量が0.1%未満では制電性が不十分となり、
1.0%を超すとカード工程でウエブが切れ易くなった
り余分な表面改質剤が加工機械を汚染する等の問題が生
じる。繊維に表面改質剤を付着させる方法としては、紡
糸工程でのオイリングロール法、あるいはウエブや不織
布へのスプレー法や浸漬法等公知の方法を使用すること
ができる。In the present invention, the above (A), (B) and (C)
0.1 to 1.0 based on the weight of fiber
%, Preferably 0.2-0.8% by weight. If the adhesion amount is less than 0.1%, the antistatic property becomes insufficient,
If it exceeds 1.0%, problems such as easy breakage of the web in the card process and excessive surface modifier contaminating the processing machine occur. As a method of attaching the surface modifier to the fiber, a known method such as an oiling roll method in a spinning step, or a spray method or a dipping method on a web or a non-woven fabric can be used.
【0011】本発明の不織布は、上記の撥水性繊維をカ
ード機を用いて所望の目付のウエブとし、にードルパン
チ法、サクションドライヤー法あるいは熱ロール法によ
り不織布とする公知の方法で得ることができる。この不
織布を紙おむつや生理用ナプキンの表面材に使用する場
合には、撥水性繊維の単糸繊度は1.0〜6.0デニー
ル、不織布の目付は8〜50g/m2、のものが好まし
く、より好ましくは目付は10〜30g/m2とする。
単糸繊度が1.0デニール未満ではカード機で均質なウ
エブを得ることが困難となり、6.0デニールを超すと
不織布の目が粗くなり所望の撥水性が得られず、さら
に、これを表面材として使用すれば肌触りの粗硬なもの
となるので好ましくない。また、目付けが8g/m2未
満では表面材が薄すぎて十分な撥水性が得られず、50
g/m2を超すと好ましい撥水性はえられるものの肌触
りが悪くコスト高になることから実用的でない。The nonwoven fabric of the present invention can be obtained by a known method in which the water-repellent fiber is made into a web having a desired areal weight using a card machine, and the nonwoven fabric is made into a nonwoven fabric by a needle punch method, a suction dryer method or a heat roll method. . When this non-woven fabric is used as the surface material of a paper diaper or a sanitary napkin, the water-repellent fiber preferably has a single yarn fineness of 1.0 to 6.0 denier and a non-woven fabric weight of 8 to 50 g / m 2 . More preferably, the basis weight is 10 to 30 g / m 2 .
If the single yarn fineness is less than 1.0 denier, it becomes difficult to obtain a uniform web on a card machine, and if it exceeds 6.0 denier, the nonwoven fabric becomes coarse and the desired water repellency cannot be obtained. If it is used as a material, it will be rough and hard to the touch, which is not preferable. If the basis weight is less than 8 g / m 2 , the surface material is too thin to obtain sufficient water repellency.
If it exceeds g / m 2 , water repellency is preferable, but it is unpractical because it is uncomfortable to touch and costly.
【0012】上記の表面材には、本発明の効果を損なわ
ない範囲で、本発明の撥水性繊維に他の繊維を混合して
用いることが出来る。この他の繊維としては、ポリエス
テル繊維、ポリアミド繊維、ポリプロピレン繊維、ポリ
エチレン繊維、レーヨン、木綿、羊毛等を例示できる。
また、これら他の繊維との混合比は、一般に不織布重量
に対し本発明の撥水性繊維を30重量%以上混合する。
不織布中の本発明の撥水性繊維の量が30%未満では所
望の撥水性が得られなくなることが多い。As the above surface material, other fibers can be mixed with the water-repellent fiber of the present invention within a range not impairing the effects of the present invention. Examples of other fibers include polyester fibers, polyamide fibers, polypropylene fibers, polyethylene fibers, rayon, cotton and wool.
The mixing ratio of the other fibers is generally 30% by weight or more of the water repellent fiber of the present invention with respect to the weight of the nonwoven fabric.
If the amount of the water-repellent fiber of the present invention in the nonwoven fabric is less than 30%, the desired water repellency cannot be obtained in many cases.
【0013】[0013]
【発明の効果】本発明の撥水性繊維は加工性及び撥水性
に優れるため、これを加工して紙おむつや生理用ナプキ
ンの端部に用いた場合、液体の横漏れを効果的に防止で
きる良好な製品が得られる。The water-repellent fiber of the present invention is excellent in workability and water repellency. Therefore, when the water-repellent fiber is processed and used as an end portion of a paper diaper or a sanitary napkin, it is possible to effectively prevent lateral leakage of liquid. Various products can be obtained.
【0014】[0014]
【実施例】本発明を実施例及び比較例によって更に具体
的に説明する。各例において物性評価には以下の方法を
用いた。撥水性: 試料短繊維をカード機に通して整綿
したウエブを、サクションドライヤーを用いて表1に示
した目付の不織布とする。この不織布から切り取った1
5cm角の試験片を、JIS L 1092の低水圧法
(a)に準じて、昇降速度10m/minで耐水圧(m
m)を測定した。撥水性の良いものほど耐水圧が高く、
40mm以上であることが必要である。測定液には下記
の組成の人工尿を用いた。EXAMPLES The present invention will be described more specifically with reference to Examples and Comparative Examples. In each example, the following methods were used for physical property evaluation. Water repellency: A web prepared by passing short fibers of a sample through a card machine to prepare a nonwoven fabric having a weight per unit area shown in Table 1 using a suction dryer. 1 cut from this non-woven fabric
A 5 cm square test piece was subjected to water pressure resistance (m) at a lifting speed of 10 m / min according to the low water pressure method (a) of JIS L 1092.
m) was measured. The better the water repellency, the higher the water pressure resistance,
It must be 40 mm or more. The artificial urine having the following composition was used as the measurement liquid.
【0015】人工尿組成(1kg中の含量) 尿素 20.0g NaCl 8.0g MgSO4・7H2O 0.8g CaCl2・2H2O 0.3g H2O 970.9g 制電性: 試料短繊維を20℃、総体湿度65%の条件
でカード機に通してウエブとし、このウエブに発生した
静電気の電圧を測定した。電圧が100V以下であれば
実用に共し得る。Artificial urine composition (content in 1 kg) Urea 20.0 g NaCl 8.0 g MgSO4 · 7H2O 0.8 g CaCl2 · 2H2O 0.3 g H2O 970.9 g Antistatic property: sample short fiber at 20 ° C., total body humidity 65 %, The web was passed through a card machine, and the voltage of static electricity generated on this web was measured. If the voltage is 100 V or less, it can be practically used.
【0016】実施例1〜5、比較例1〜7 ポリプロピレンを芯成分としポリエチレンを鞘成分とす
る複合比50/50の鞘/芯型複合繊維を紡糸し、延伸
工程でオイリングロールにより表1に示した各種組成の
表面改質材を付着させた各種のトウを得、これを繊維長
51mmに切断して試料短繊維を得た。これらの試料短
繊維を、又は試料短繊維に他の繊維を混合して、それぞ
れカード機を通してウエブとし、140℃のサクション
ドライヤーで熱処理して表1に示した目付の不織布とし
た。それぞれの試料について、カード工程で測定した静
電気電圧及び不織布の撥水性(=耐水圧)を表1に併せ
表示した。Examples 1 to 5 and Comparative Examples 1 to 7 A sheath / core type composite fiber containing polypropylene as a core component and polyethylene as a sheath component at a composite ratio of 50/50 was spun, and shown in Table 1 by an oiling roll in a drawing process. Various tows to which the surface modifiers having various compositions shown were attached were cut into fiber lengths of 51 mm to obtain sample short fibers. These sample short fibers, or other fibers were mixed with the sample short fibers, passed through a card machine to obtain webs, and heat-treated with a suction dryer at 140 ° C. to obtain nonwoven fabrics having a fabric weight shown in Table 1. For each sample, the electrostatic voltage measured in the card process and the water repellency (= water pressure resistance) of the nonwoven fabric are also shown in Table 1.
【0017】[0017]
【表1】 [Table 1]
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 FI 技術表示箇所 D06M 101:32 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI technical display location D06M 101: 32
Claims (4)
0〜80重量%、ベヘニルホスフエートカリ塩(B)5
0〜10重量%及びポリエチレンワックス乳化物(C)
50〜10重量%からなる表面改質材を、繊維重量に対
して0.1〜1.0重量%付着させたことを特徴とす
る、ポリオレフインまたはポリエステルからなる撥水性
繊維。1. Stearyl phosphate potassium salt (A) 4
0-80% by weight, behenyl phosphate potassium salt (B) 5
0-10% by weight and polyethylene wax emulsion (C)
A water-repellent fiber made of polyolefin or polyester, characterized in that a surface modifier made of 50 to 10% by weight is attached to the fiber in an amount of 0.1 to 1.0% by weight.
る請求項1に記載の撥水性繊維。2. The water repellent fiber according to claim 1, wherein the single yarn fineness is 1.0 to 6.0 denier.
維を30重量%以上と、他の繊維70重量%以下とから
なる不織布。3. A nonwoven fabric comprising 30% by weight or more of the water-repellent fiber according to claim 1 or 2 and 70% by weight or less of other fibers.
に記載の不織布。4. The weight per unit area is 8 to 50 g / m 2.
The non-woven fabric described in.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6031016A JPH07216737A (en) | 1994-02-02 | 1994-02-02 | Water repellent fiber and nonwoven fabric using the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6031016A JPH07216737A (en) | 1994-02-02 | 1994-02-02 | Water repellent fiber and nonwoven fabric using the same |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH07216737A true JPH07216737A (en) | 1995-08-15 |
Family
ID=12319747
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6031016A Pending JPH07216737A (en) | 1994-02-02 | 1994-02-02 | Water repellent fiber and nonwoven fabric using the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH07216737A (en) |
-
1994
- 1994-02-02 JP JP6031016A patent/JPH07216737A/en active Pending
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