JPH02191758A - Water-resistant nonwoven fabric and disposable diaper - Google Patents
Water-resistant nonwoven fabric and disposable diaperInfo
- Publication number
- JPH02191758A JPH02191758A JP1003853A JP385389A JPH02191758A JP H02191758 A JPH02191758 A JP H02191758A JP 1003853 A JP1003853 A JP 1003853A JP 385389 A JP385389 A JP 385389A JP H02191758 A JPH02191758 A JP H02191758A
- Authority
- JP
- Japan
- Prior art keywords
- nonwoven fabric
- water
- resistant
- less
- fiber diameter
- 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
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 69
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 239000000835 fiber Substances 0.000 claims abstract description 29
- 230000002745 absorbent Effects 0.000 claims abstract description 12
- 239000002250 absorbent Substances 0.000 claims abstract description 12
- 230000035699 permeability Effects 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 8
- 238000007664 blowing Methods 0.000 claims abstract description 6
- 238000010030 laminating Methods 0.000 claims abstract description 6
- 229920001410 Microfiber Polymers 0.000 claims abstract description 5
- 230000004927 fusion Effects 0.000 claims abstract description 5
- 239000000155 melt Substances 0.000 claims abstract description 4
- 239000002131 composite material Substances 0.000 claims description 6
- 239000011148 porous material Substances 0.000 abstract 1
- -1 polyethylene Polymers 0.000 description 8
- 239000004743 Polypropylene Substances 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 210000002700 urine Anatomy 0.000 description 5
- 239000004744 fabric Substances 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000004750 melt-blown nonwoven Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 238000004049 embossing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000027939 micturition Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 235000013024 sodium fluoride Nutrition 0.000 description 1
- 239000011775 sodium fluoride Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Landscapes
- Absorbent Articles And Supports Therefor (AREA)
- Laminated Bodies (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、防水性及び通気性に優れた耐水性不織布及び
その不織布を防水層として使用したソフトな感触で蒸れ
の少ない使い捨ておむつに関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a water-resistant nonwoven fabric with excellent waterproofness and breathability, and a disposable diaper that uses the nonwoven fabric as a waterproof layer and has a soft feel and less stuffiness.
（従来の技術及びその問題点）
従来、使い捨ておむつの最外層の防水シートには、ポリ
エチレンフィルムが薄くても防水性があり、且つ経済性
の点でも優れているため多用されている。(Prior Art and its Problems) Conventionally, polyethylene film has been widely used as the outermost waterproof sheet of disposable diapers because it has waterproof properties even if it is thin and is also economical.
しかしながら、ポリエチレンフィルムは防水性に優れて
いる反面、通気性がほとんどなく、そのために使用時に
蒸れを生じやすい、またフィルムには、特有の冷たい感
触があり肌に直接触れるものとしては好ましくない。However, although polyethylene film has excellent waterproof properties, it has almost no air permeability, so it tends to get stuffy during use, and the film has a characteristic cold feel, making it undesirable for direct contact with the skin.
本発明は、前記欠点を解消すべく鋭、＠検９１を重ねた
結果得られたものであって、防水性と通気性とをバラン
スよく保ち、且つソフトで潟かい触感を有する１）水性
不織（Ｊｉ、及びその不織布を防水層として使用した使
い捨ておむつの提供を目的とするものである。The present invention was obtained as a result of extensive @ken91 research in order to eliminate the above-mentioned drawbacks, and has the following characteristics: The purpose of the present invention is to provide a disposable diaper using woven (Ji) and its nonwoven fabric as a waterproof layer.
（問題点を解決するための手段）
本発明によれば、平均繊維径が０．１乃至５μｍの疎水
性極細ｊａ維からなり、目付２０ ｇ ／ ｍ ２以Ｆ
の不織布ａと、平均繊維径が５６．ｘ ｍ以上５０μｍ
以下の繊維からなり、引’Ｊｆ４強度Ｉ Ｋｇ／ ５
ｃｍｌｉ以」二、目付量 ２０ ｇ ／ ｍ ２以下の
不織布すとを積層し、不織布ａと不織布すを部分的熱融
着により一体化した不織布であって、その複合不織布の
通気度が２０ ｃｃ／ ｃｒｍ２／ ｓｅｅ以り、最大
ボアサイズが３０７４ｍ以下である耐水性不織布が提供
される。(Means for Solving the Problems) According to the present invention, the fibers are made of hydrophobic ultrafine JA fibers with an average fiber diameter of 0.1 to 5 μm, and have a basis weight of 20 g/m 2 or more F
nonwoven fabric a with an average fiber diameter of 56. x m or more 50μm
Consisting of the following fibers, tensile strength I Kg/5
cmli" 2. A nonwoven fabric made by laminating nonwoven fabrics with a basis weight of 20 g/m2 or less, and integrating nonwoven fabric a and nonwoven fabric by partial heat fusion, and the air permeability of the composite nonwoven fabric is 20 cc. / crm2 / see provides a water-resistant nonwoven fabric having a maximum bore size of 3074 m or less.
本発明によればまた、Ｏｉｉ記酎水耐不織市を、前記率
ｉａ／ｌ′ｉｂを最外層となるように配置し、中間層に
は吸収性材料、内層には透水性不織布を用いて構成して
なる使い捨ておむつが提供される。According to the present invention, a water-resistant non-woven fabric according to Oii is arranged so that the ratio ia/l'ib is the outermost layer, an absorbent material is used for the middle layer, and a water-permeable non-woven fabric is used for the inner layer. A disposable diaper is provided.
（発明の好適態様）
一般に、不織布はその構造上、通気性に優れるものの防
水性は劣るのであるが、本発明者らは。(Preferred Embodiment of the Invention) In general, nonwoven fabrics have excellent breathability due to their structure, but are inferior in waterproofness.
不織布の緻密度をあるレベル以上にすれば、使い捨てお
むつなどにおいて要求される防水性を満足することがで
き、防水機能付与を目的とする不織布の最大ボアサイズ
を３０μｍ以下とすれば、この用途での使用が可能とな
ることを見出した８このような不織布の製造方法として
は、メルトブロー法、スパンボンド法、フラシュ紡糸法
、繊維分割法等を挙げることができるが、なかでもメル
トブロー法により得られる極細不織布は、緻密度、結合
、自己融４．疎水性が高（、更に、経済的にも優れてい
る点で好ましい。If the density of the non-woven fabric is set above a certain level, it can satisfy the waterproof properties required for disposable diapers, etc., and if the maximum bore size of the non-woven fabric for the purpose of imparting waterproof function is 30 μm or less, it can be used for this purpose. 8 Methods for manufacturing such nonwoven fabrics include melt blowing, spunbonding, flash spinning, fiber splitting, etc. Among them, ultrafine fibers obtained by melt blowing Non-woven fabrics have high density, bonding, and self-melting 4. It is preferred because it has high hydrophobicity (and is also economically superior).
メルトブロー法は、ポリマーを低粘度に熱溶融させ、ノ
ズルより吐出し、高温高速気流で引きちぎるため、平均
繊維径５ｇｍ以下、絡合、自己融着した［」開きの少な
い不織布を容易に（ｌることができる。The melt-blowing method heat-melts the polymer to a low viscosity, discharges it from a nozzle, and tears it with a high-temperature, high-speed air stream. This process easily produces nonwoven fabrics with an average fiber diameter of 5 gm or less, which are entangled, self-fused, and have little opening. be able to.
平均ｌａ維径は０．１乃至５μｍ、好ましくは０，５乃
全５１）ｍの範囲にあることが必要で、平均繊維径が５
μｍを超えると、目開きが大きくなり防水↑′１に劣る
ようになる。また＋均繊ｍ径が０．ｌｕｍ未満であると
１通気性が著しく低下する。The average la fiber diameter needs to be in the range of 0.1 to 5 μm, preferably 0.5 to 51) m, and the average fiber diameter is 5 μm.
If it exceeds μm, the opening becomes large and the waterproofness becomes inferior to ↑'1. In addition, the uniform fiber m diameter is 0. If it is less than lum, the air permeability will be significantly reduced.
本発明の１・１水性不織布の最大ボアサイズは不織ｌ［
ｉの［１付、繊維径、圧密度、その地熱処理等の製ｌａ
技術、加工技術などにより左右される。一方。The maximum bore size of the 1.1 aqueous nonwoven fabric of the present invention is the nonwoven l[
i [1 attached, fiber diameter, compaction density, geothermal treatment, etc.
Depends on technology, processing technology, etc. on the other hand.
不織布の通気度は２０ ｃｃ／ ａｍ” ／ ｓｅｅ以
上であることが好ましいが、通気度も１４イー↑、繊維
径、圧密ＩＯに影響さね、その関係はボアリーイズの場
合と逆となるために、両１３のバランスを取ることが肝
要である。It is preferable that the air permeability of the non-woven fabric is 20 cc/am”/see or higher, but the air permeability is also 14E↑, which does not affect the fiber diameter and consolidation IO, and the relationship is the opposite of that for boreholes. It is important to balance both 13.
メルトブロー法にｉ５いては、ショットとよばれる繊Ｐ
Ｉｉ ＩＦ５状にならなかった工状の溶融樹脂が発−卜
する１合があり、そのシｊソ！・のために形成途中のつ
ｒブに数ｔ−ｕ ｍ或いはそれ以上の孔があきやすい、
そのために繊維径を小さくして平均ボアサイズを小さく
してもショットによるところの最大ボアサイズは、小さ
くできないこともあるが、これは−穀にメルトブロー法
によって作られる不織７：１を２枚以上重ねて不織７１
’ｉ （ａｉ として使用することにより解決すること
ができる。ずなわら、シＥ（ットの数は極めて少ないた
め２枚以−１−重ねて使用することにより実質的に貫通
したショットをなくすることができる。In the melt blow method, fiber P called shot is used.
Ii There is a case where the molten resin that has not become the IF5 shape develops, and that is the case! Due to
For this reason, even if the average bore size is reduced by reducing the fiber diameter, the maximum bore size determined by shot may not be able to be reduced. Te non-woven 71
This can be solved by using 'i (ai). However, since the number of shots is extremely small, by using two or more shots one on top of the other, you can virtually eliminate penetrating shots. can do.
次に、このメルトブロー不織布だけでは耐水性は満足す
るものの１強度と耐摩耗性に劣るため、その補強として
強度のある不織布すを積層し、体止することが必要であ
る。このＭ強用不織布すは、引・ｊＲ強度がＩ Ｋｇ７
５ｃｏ＋中以上、目付２０ｇ／ｍ”以ドで、薄くて柔軟
性に富むものが好ましい。Next, although this melt-blown nonwoven fabric alone has satisfactory water resistance, it is inferior in strength and abrasion resistance, so it is necessary to laminate and hold a strong nonwoven fabric as reinforcement. This M-strength nonwoven fabric has a tensile/jR strength of I Kg7.
Preferably, the material is 5co+ medium or higher, has a basis weight of 20 g/m" or less, and is thin and highly flexible.
なお、目付については不織布ａは、本発明条件によれば
２０ｇ／が以下で通気性と防水性のバランスを保つこと
が可能となる。不織布すは目付２０ｇ／１）１２以下で
補強の［］的を十分達し得る。また、経済性の点におい
て従来のポリエチレンフィルムより１憂れるためには不
ｊａ７ｆｉａ、ｂはそれぞれ目付２０Ｈ／ａ＋２以下と
することが必要である。Regarding the basis weight, nonwoven fabric a can maintain a balance between breathability and waterproofness at a weight of 20 g/or less according to the conditions of the present invention. The purpose of reinforcement can be fully achieved when the nonwoven fabric has a basis weight of 20 g/1) 12 or less. In addition, in order to be superior to conventional polyethylene films in terms of economical efficiency, it is necessary that each of inja7fia and b has a basis weight of 20H/a+2 or less.
中間層の吸収性材亨・）としては、吸収紙、綿状バルブ
、高分子吸収体等を挙げることができ、この吸収性材ｔ
１を単独もしくは神々番こ組合せることにより、ベビー
用、大人用などの使用目的に合った保水能力を有するよ
うに設定するができる０例えば、ベビー用のように高い
保水能力を必要としない場合は、高分子吸収体単独で用
いてもよいし、また、大人用においては、吸収紙と高分
子吸収体及び／又は綿状バルブを組合せて用いることに
より、より高い保水能力を得ることが可能となる。Examples of the absorbent material in the intermediate layer include absorbent paper, cotton-like bulbs, polymeric absorbers, etc.
By using 1 alone or in combination, it can be set to have a water retention capacity suitable for the purpose of use, such as for babies or adults. 0 For example, when a high water retention capacity is not required, such as for babies. can be used with a polymeric absorbent alone, or for adults, higher water retention capacity can be obtained by using a combination of absorbent paper, polymeric absorbent and/or cotton valve. becomes.
内層に用いる透水性不織４１は、排尿が戻らず且つ肌触
りを良好に保−）ために、それ自体疎水性繊維から成る
ことが好ましく、例えば、ポリプロピレン、ポリエステ
ル、ポリアミド、またはそれらの変性物の如きものでも
よい。The water-permeable non-woven material 41 used for the inner layer is preferably made of hydrophobic fibers, such as polypropylene, polyester, polyamide, or modified materials thereof, in order to prevent urine from returning and maintain a good texture. Something like this is fine.
疎水性繊維の不織４１への製法は、前述したノ５法、メ
ルトブロー法等により製造することができる。The hydrophobic fiber nonwoven 41 can be manufactured by the above-mentioned method No. 5, melt blowing method, or the like.
内層は排尿時、速やかに尿を吸収性材料に移動さ→４る
透水性を要することから、［１付はｔＪｉ尿温層温度排
尿時圧の関係から、３０ｇ／ｒｎ”以下であることが好
ましい、また、目付が５ｇ／ｍ”未満になると目開きが
多くなり、逆戻りするおそれがあるので好ましくない、
また、目付が多い範囲では、該不織布にポリエチレング
リコールのような界面活性剤で親木処理を施し、排尿の
移動をはやめてもよい。The inner layer must have water permeability that allows urine to move quickly to the absorbent material during urination. Preferable, and undesirable because if the basis weight is less than 5 g/m", the opening will increase and there is a risk of relapse.
Further, in a range where the fabric weight is large, the nonwoven fabric may be treated with a surfactant such as polyethylene glycol to prevent the movement of urine.
本発明の耐水性不織布は、使い捨ておむつのみならず１
例えば９生理用ナプキン、ベットパッドなど各行の吸収
体のＬ目途として用いることももちろんできる。The water-resistant nonwoven fabric of the present invention is suitable for use not only in disposable diapers but also in diapers.
For example, it can also be used as the L measure for each row of absorbent materials such as 9 sanitary napkins and bed pads.
（実施例）
本実施例において、引張強度、ボアサイズ及び通気度は
、それぞれ、 ＪＩＳ Ｌ １０８５、ＡＳＴ１４ Ｆ
３１（ｉ８６ 、 ＪＩＳ Ｌ ｌＱ９６ （７ラジ
ール法）ニヨリ測定シた。(Example) In this example, the tensile strength, bore size, and air permeability were determined according to JIS L 1085 and AST14 F, respectively.
31 (i86, JIS L1Q96 (7 Razer method)).
実施例Ｉ
平均繊維径２ｇｒｎ、［］付１０ｇ／ｍ”、最大ボア勺
イズ：３０ ｍ Ｕのポリプロピレンメルトブロー法不
織布と、ｆ均繊Ｈ１ｌＬ ｌ ５ ｕ ｍ 、目付ｌｏ
ｇ／ＩＴＩ ” 、引Ｉｊ長強度２にｇ７５ｃｍ幅のポ
リプロピレンスパンボンド法不織４ｉを、エンボス面積
０．５ｍｍＸ０．５ｍｍ、ピッ−ｙ１５ｍｌ１）でヒー
トエンボスにより部分的に熱融むさせて一体化した。こ
の複合不織１５の通気度は５０ ｃｃｌ ｃｍ２／ ｓ
ｅｃであり、最大ボアサイズは３０μｍでっだ７この複
合不織布のスパンボンド法王Ｑｔ５側をＩ）！外層にし
て、中間層である吸収性材料としては、外層側から吸水
紙２０ｇ／ｍ２．綿状バルブ２００ ｇ ／ ｍ ″、
高分子吸収体のポリアク＋フル酸ソーダのバウグー７５
ｇ／ｍ２．綿状バルブ２００４ｇ ／ ｍ ” 、吸水
紙２０ｇ／ｍ２２核からなる６層構造どした。また内層
には、界面活性剤で親木処理を施した平均繊度２デニー
ル、目（ｔ１８ｇ／口１２のポリプロピレンスパンボン
ド法不織布を使ｆｉｌ Ｉ、 、外層、中間層、内層を
一体化してベビー用おむつを作成した。このおむつは外
層の感触が非常にソフトであり、その表面を木綿のタオ
ルで５０回こすっても毛羽）７ちは認められなかった。Example I A polypropylene melt-blown nonwoven fabric with an average fiber diameter of 2grn, 10g/m" with [], maximum bore size: 30m, uniform fiber H11L15um, and basis weight lo
g/ITI'', tensile Ij length strength 2, g75cm width polypropylene spunbond non-woven 4i was partially melted and integrated by heat embossing with an embossing area of 0.5mm x 0.5mm and a pitch of 15ml1). The air permeability of this composite nonwoven 15 is 50 ccl cm2/s
ec, and the maximum bore size is 30 μm.7 The spunbond Pope Qt5 side of this composite nonwoven fabric is I)! The absorbent material for the outer layer and the middle layer was water-absorbing paper of 20 g/m2 from the outer layer side. Cotton bulb 200 g/m″,
Polyac of polymer absorber + Baugu 75 of sodium fluoride
g/m2. It has a 6-layer structure consisting of cotton-like bulbs with a weight of 2004 g/m" and water-absorbing paper of 20 g/m22. The inner layer is made of polypropylene with an average fineness of 2 denier and a grain size (t18 g/m2) treated with a surfactant. A baby diaper was created by integrating the outer layer, middle layer, and inner layer using spunbond nonwoven fabric.The outer layer of this diaper was very soft to the touch, and the surface was rubbed 50 times with a cotton towel. (But fluff) 7th was not recognized.
ｒｉｉ’ｉ記内層側より人工尿２００ＣＣを吸収させ
、３０分後の外層不ＪＲｉ側の洩れを調べた結果、全く
洩れがなかった。200 cc of artificial urine was absorbed from the inner layer side, and leakage from the outer layer side was examined after 30 minutes, and no leakage was found.
実施例２
＝Ｔ’均繊維（￥３ ｕｍ、 ［］ｆ’ｔ５ ｇ／ｌｎ
２．最大ボアサイズ４０１４ ｍのボリブ〔１ピレン
メルトブロー法不織布を２枚重ね、八番こｉ＋ｚ均繊維
径１５ Ｈｍ、［１付１ （］ 、、：／ｍ ２ 、引
張強度２ Ｋｇ／ ５ ｃａ１幅のポリプロピレンスパ
ンボンド法不織布を東ね、これをエンボス面積０．５
ｍｒｎＸ Ｏ，５ｒｎｒｓ、ビッヂ１．５■でヒートエ
ンボスにより部分的に熱融着させて一体化したにの複合
不織／ｉｉの最大ボアサイズは２５回ｍ１通気度は５０
ｃｃｌ ｃｍ２／ ５（ＩＣであった。この複合不織
布を最外層にしてそのほかは実施例■と同じようにして
ベビー用おむつを作製した。内層側より人工尿２００ｅ
ｅを吸収させ、：３０分後の外層不織小側の洩れを調べ
た結果、全く洩れがなか−ｒｔ二。Example 2 = T' uniform fiber (¥3 um, []f't5 g/ln
2. Bolibu with a maximum bore size of 4014 m [2 layers of 1 pyrene melt-blown nonwoven fabric, 8th grade I+Z average fiber diameter 15 Hm, [1 attached 1 (] , :/m 2 , tensile strength 2 Kg/5 ca 1 width polypropylene) Lay out the spunbond nonwoven fabric and emboss it with an area of 0.5
mrn
ccl cm2/5 (IC).A baby diaper was produced using this composite nonwoven fabric as the outermost layer in the same manner as in Example 2.Artificial urine 200e was added from the inner layer side.
As a result of checking for leakage on the small side of the outer nonwoven layer after 30 minutes, there was no leakage at all.
（発明の効果）
本発明によれば、干、均繊維径が０．１乃至５μｍの疎
水性極細繊維からなり、目付２０ ｇ／ ｍ ２以Ｆの
不織／ｌｉ ｉｘと、″Ｐ均繊維径が５１！ＩＴＩ以）
）５０ｇｍ以下の繊維からなり、引張強度Ｉ Ｋｇ／
５ ｃｖａ中以上、目付ｆｆ１２０ｇ／ｍ”以下の不織
布すとを積層し、不織布ａと不織布を部分的熱融着によ
り一体化することにより、その複合不織布の通気度が２
０ ｃｃ／ ｃｏ＋” ／ ｓｅｅ以」二、最大ボアサ
イズが３０ｕｍ以下である防水性、通気性ならびに柔軟
性に優れた不織布が提供され、この耐水性不織布を最外
層として使用した使い捨ておむつは、防水性及び通気性
に優れ、且つソフトな感触で蒸れの少ない使用感の優れ
たものとなる。(Effects of the Invention) According to the present invention, non-woven/li ix consisting of hydrophobic ultrafine fibers with a dry average fiber diameter of 0.1 to 5 μm and a basis weight of 20 g/m 2 or more F, and “P uniform fibers” Diameter is 51!ITI or more)
) Consists of fibers of 50 gm or less, tensile strength I Kg/
5 By laminating non-woven fabrics with cva medium or above and basis weight ff 120 g/m or less, and integrating non-woven fabric a and non-woven fabric by partial heat fusion, the air permeability of the composite non-woven fabric is 2.
0 cc/co+"/see"2.A nonwoven fabric with a maximum bore size of 30 um or less and excellent in waterproofness, breathability, and flexibility is provided, and a disposable diaper using this waterproof nonwoven fabric as the outermost layer is waterproof. It also has excellent air permeability, a soft feel, and less stuffiness, making it comfortable to use.
第１図は１本発明の使い捨ておむつの一例を示す断面図
である。
引明数字ｌは、透水性不織布シート（内層）、２は吸収
性材料（中間層）、３は耐水性不織布シート（外層）を
それぞれ表わす。FIG. 1 is a sectional view showing an example of the disposable diaper of the present invention. The numeral 1 represents a water permeable nonwoven fabric sheet (inner layer), 2 represents an absorbent material (intermediate layer), and 3 represents a water resistant nonwoven fabric sheet (outer layer).
Claims (5)
からなり、目付２０ｇ／ｍ＾２以下の不織布ａと、平均
繊維径が５μｍ以上５０μｍ以下の繊維からなり、引張
強度１Ｋｇ／５ｃｍ巾以上、目付量２０ｇ／ｍ＾２以下
の不織布ｂとを積層し、不織布ａと不織布ｂを部分的熱
融着により一体化した不織布であって、その複合不織布
の通気度が２０ｃｃ／ｃｍ＾２／ｓｅｃ以上、最大ボア
サイズが３０μｍ以下である耐水性不織布。(1) Nonwoven fabric a made of hydrophobic ultrafine fibers with an average fiber diameter of 0.1 to 5 μm and a basis weight of 20 g/m^2 or less, and fibers with an average fiber diameter of 5 μm to 50 μm and a tensile strength of 1 Kg/5 cm. A nonwoven fabric made by laminating a nonwoven fabric b with a width of at least 20 g/m^2 and a basis weight of 20 g/m^2 or less, and integrating nonwoven fabric a and nonwoven fabric B by partial heat fusion, and the air permeability of the composite nonwoven fabric is 20 cc/cm^ A water-resistant nonwoven fabric having a maximum bore size of 2/sec or more and a maximum bore size of 30 μm or less.
、該不織布ａ全体として目付２０ｇ／ｍ＾２以下である
請求項（１）記載の耐水性不織布。(2) The water-resistant nonwoven fabric according to claim 1, wherein the nonwoven fabric a is formed by laminating a plurality of nonwoven fabric layers, and the nonwoven fabric a as a whole has a basis weight of 20 g/m^2 or less.
のである請求項（１）もしくは（２）記載の耐水性不織
布。(3) The water-resistant nonwoven fabric according to claim (1) or (2), wherein the nonwoven fabric layer a is made by a melt blowing method.
ｂを最外層となるように配置し，中間層には吸収性材料
、内層には透水性不織布を用いて構成してなる使い捨て
おむつ。(4) A disposable nonwoven fabric made of the water-resistant nonwoven fabric according to claim (1), wherein the nonwoven fabric b is arranged as the outermost layer, an absorbent material is used as the middle layer, and a water permeable nonwoven fabric is used as the inner layer. Diapers.
不織布である請求項（４）記載の使い捨ておむつ。(5) The disposable diaper according to claim (4), wherein the water-resistant nonwoven fabric is the water-resistant nonwoven fabric according to claim (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1003853A JP2571889B2 (en) | 1989-01-12 | 1989-01-12 | Water-resistant nonwoven and disposable diapers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1003853A JP2571889B2 (en) | 1989-01-12 | 1989-01-12 | Water-resistant nonwoven and disposable diapers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02191758A true JPH02191758A (en) | 1990-07-27 |
| JP2571889B2 JP2571889B2 (en) | 1997-01-16 |
Family
ID=11568742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1003853A Expired - Lifetime JP2571889B2 (en) | 1989-01-12 | 1989-01-12 | Water-resistant nonwoven and disposable diapers |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2571889B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0768687A (en) * | 1993-09-02 | 1995-03-14 | Unitika Ltd | Laminated nonwoven structure |
| JPH0819570A (en) * | 1994-07-06 | 1996-01-23 | Kuraray Co Ltd | Leakage preventing sheet and sanitary material |
| JP2002046245A (en) * | 2000-08-01 | 2002-02-12 | Crecia Corp | Highly water absorbable paper |
| JP2008196104A (en) * | 2002-07-29 | 2008-08-28 | E I Du Pont De Nemours & Co | Nonwoven fabric |
| JP5290992B2 (en) * | 2007-11-28 | 2013-09-18 | ユニ・チャーム株式会社 | Wear absorbent article |
| JP2015038263A (en) * | 2013-08-19 | 2015-02-26 | アモグリーンテク カンパニー，リミテッド | Moisture-permeable waterproof fabric and production method thereof |
| JP2020097029A (en) * | 2018-12-14 | 2020-06-25 | 凸版印刷株式会社 | Heavy metal adsorption sheet and method for producing heavy metal adsorption sheet |
| WO2022088041A1 (en) * | 2020-10-30 | 2022-05-05 | The Procter & Gamble Company | Nonwoven and absorbent articles containing the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5071976A (en) * | 1973-10-31 | 1975-06-14 | ||
| JPS612854A (en) * | 1984-06-15 | 1986-01-08 | ユニ・チヤ−ム株式会社 | Facing material of absorbable article |
| JPS6192667A (en) * | 1984-08-10 | 1986-05-10 | キンバリ− クラ−ク コ−ポレ−シヨン | Sanitary napkin |
| JPH0288056A (en) * | 1988-09-26 | 1990-03-28 | Oji Paper Co Ltd | Surface material for sanitary good and manufacture thereof |
-
1989
- 1989-01-12 JP JP1003853A patent/JP2571889B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5071976A (en) * | 1973-10-31 | 1975-06-14 | ||
| JPS612854A (en) * | 1984-06-15 | 1986-01-08 | ユニ・チヤ−ム株式会社 | Facing material of absorbable article |
| JPS6192667A (en) * | 1984-08-10 | 1986-05-10 | キンバリ− クラ−ク コ−ポレ−シヨン | Sanitary napkin |
| JPH0288056A (en) * | 1988-09-26 | 1990-03-28 | Oji Paper Co Ltd | Surface material for sanitary good and manufacture thereof |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0768687A (en) * | 1993-09-02 | 1995-03-14 | Unitika Ltd | Laminated nonwoven structure |
| JPH0819570A (en) * | 1994-07-06 | 1996-01-23 | Kuraray Co Ltd | Leakage preventing sheet and sanitary material |
| JP2002046245A (en) * | 2000-08-01 | 2002-02-12 | Crecia Corp | Highly water absorbable paper |
| JP2008196104A (en) * | 2002-07-29 | 2008-08-28 | E I Du Pont De Nemours & Co | Nonwoven fabric |
| JP5290992B2 (en) * | 2007-11-28 | 2013-09-18 | ユニ・チャーム株式会社 | Wear absorbent article |
| JP2015038263A (en) * | 2013-08-19 | 2015-02-26 | アモグリーンテク カンパニー，リミテッド | Moisture-permeable waterproof fabric and production method thereof |
| JP2020097029A (en) * | 2018-12-14 | 2020-06-25 | 凸版印刷株式会社 | Heavy metal adsorption sheet and method for producing heavy metal adsorption sheet |
| WO2022088041A1 (en) * | 2020-10-30 | 2022-05-05 | The Procter & Gamble Company | Nonwoven and absorbent articles containing the same |
| CN116324064A (en) * | 2020-10-30 | 2023-06-23 | 宝洁公司 | Nonwoven and absorbent article comprising same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2571889B2 (en) | 1997-01-16 |
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