JPH0375056A - Facing of sanitary equipment - Google Patents
Facing of sanitary equipmentInfo
- Publication number
- JPH0375056A JPH0375056A JP1211007A JP21100789A JPH0375056A JP H0375056 A JPH0375056 A JP H0375056A JP 1211007 A JP1211007 A JP 1211007A JP 21100789 A JP21100789 A JP 21100789A JP H0375056 A JPH0375056 A JP H0375056A
- Authority
- JP
- Japan
- Prior art keywords
- nonwoven fabric
- facing
- fibers
- polymer
- vinyl acetate
- 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
- 239000000835 fiber Substances 0.000 claims abstract description 96
- 229920000642 polymer Polymers 0.000 claims abstract description 23
- 239000004744 fabric Substances 0.000 claims abstract description 20
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000005977 Ethylene Substances 0.000 claims abstract description 16
- 239000005038 ethylene vinyl acetate Substances 0.000 claims abstract description 16
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims abstract description 16
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 8
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 7
- 229920001600 hydrophobic polymer Polymers 0.000 claims abstract description 6
- 239000002344 surface layer Substances 0.000 claims abstract description 6
- 239000004745 nonwoven fabric Substances 0.000 claims description 69
- 239000010410 layer Substances 0.000 claims description 21
- 239000004750 melt-blown nonwoven Substances 0.000 claims description 14
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000011230 binding agent Substances 0.000 claims description 7
- 239000004408 titanium dioxide Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 16
- 239000010839 body fluid Substances 0.000 abstract description 14
- 210000001124 body fluid Anatomy 0.000 abstract description 14
- 229920001577 copolymer Polymers 0.000 abstract description 8
- 239000000155 melt Substances 0.000 abstract description 6
- 230000006835 compression Effects 0.000 abstract description 4
- 238000007906 compression Methods 0.000 abstract description 4
- 239000000047 product Substances 0.000 description 23
- 229920001410 Microfiber Polymers 0.000 description 18
- 238000010521 absorption reaction Methods 0.000 description 14
- -1 polyethylene Polymers 0.000 description 14
- 239000007788 liquid Substances 0.000 description 13
- 238000009987 spinning Methods 0.000 description 10
- 239000002131 composite material Substances 0.000 description 9
- 229920000728 polyester Polymers 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000004698 Polyethylene Substances 0.000 description 6
- 230000002745 absorbent Effects 0.000 description 6
- 239000002250 absorbent Substances 0.000 description 6
- 238000004049 embossing Methods 0.000 description 6
- 229920000573 polyethylene Polymers 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 5
- 239000003658 microfiber Substances 0.000 description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 description 5
- 239000005020 polyethylene terephthalate Substances 0.000 description 5
- 230000002209 hydrophobic effect Effects 0.000 description 4
- 238000007127 saponification reaction Methods 0.000 description 4
- 241000288673 Chiroptera Species 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- 210000004251 human milk Anatomy 0.000 description 3
- 235000020256 human milk Nutrition 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 239000002504 physiological saline solution Substances 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000002074 melt spinning Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 239000002964 rayon Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 206010021639 Incontinence Diseases 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229920000305 Nylon 6,10 Polymers 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
Abstract
Description
本発明は体液を吸収する吸収性基材を被覆する衛生用品
のフェーシングに関するものである。特に、吸収した体
液が速やかに浸透拡散する、隠蔽効果の高いフェーシン
グに関するものである。The present invention relates to facings for sanitary products that cover absorbent substrates that absorb body fluids. In particular, it relates to a facing that has a high concealing effect and allows absorbed body fluids to quickly permeate and diffuse.
従来、衛生用品のフェーシングとして使用される不織布
には多くの提案がなされている。例えば、不織布の構成
に特徴を持たせて液体の吸収性、拡散性を改良しようと
するものとして、複層の不織布からなり、表側になる層
がポリエステル繊維６０〜８０％、レーヨン繊維２０〜
４０％からなり、内側になる層がポリエステル繊維２０
〜４０％、ジ−３フ１
複合繊維４０〜５０％からなる不織布フェーシング材が
特公昭６０−２９４８８号公報に、疎水性繊維を主体と
する第１層と２デニール以下の親水性繊維を主体とする
第２層とを積層したウェブを部分的に結合した不織布の
おむつ用フェーシング材が実開昭６０−１８９５０５号
公報に、上層と下層とでバインダー繊維量および親水性
の異なる繊維を積層した不織布を表面材とすることが特
開昭６１−２８５４号公報に、表裏２層よりなる複合ウ
ェブであって、表層が２０〜５５重量％の熱融着繊維を
含み、裏層が表層より多くの熱融着繊維を含み融着繊維
によって相互の交差点において融着している衛生材料用
カバーが特公昭６１−１３８２０号公報に、疎水性繊維
を主体とした繊維でなる開孔を有する第１層、親水性繊
維を主体とした繊維でなる非開孔の第２層の積層不織布
でなる吸収性物品の表面材が特開昭６１−ｌ５３４３号
公報、特開昭６２−１７０５６５号公報に、繊維長の異
なる３種類の不織布を積層した紙おむつの表面材が特開
昭６１−１８６５０４号公報に、非円形断面ポリエステ
ル繊維の湿式不織布を生理用吸収体の被覆紙とすること
が特公昭６１−１５６９３号公報に、ポリエステル繊維
：レーヨン繊維：ポリオレフィン繊維が４５〜８０ ：
２０〜４０：１０〜３０の割合で混繊した日付ｌ〜４
０ｇ／ｍ”の有孔不織布を生理用ナプキンやおむつのよ
うな衛生用品のフェーシングに使用することが実公昭６
１−３２６７１号公報に、３葉以上の多葉形の異形断面
繊維と熱バインダー繊維とよりなる乾式不織布により、
液体の逆流を防止した不織布からなるフェーシングが特
公昭６２−２７１６１号公報に、ポリエステル−ポリエ
チレンの複合繊維を主体とした表層繊維ウェブと、ポリ
エステル−ポリエチレンの複合繊維とポリエステル−高
収縮性ポリエステルのサイドバイサイド型複合繊維の裏
層繊維ウェブが積層一体化してなる表面シートが特開昭
６３−４０５４９号公報に、熱溶融性繊維のみからなる
捲縮を付与されていない繊維の表面第１層と捲縮を付与
した繊維の第２層とから構成された不織布を表面材とし
た吸収性物品が特公昭６４−９０２０号公報に、疎水性
繊維を主体とした細い繊度の高密度の上部層と、疎水性
繊維と親水性繊維とからなる太い繊度からなる低密度の
下部層とからなる不織布状外装材が特公平１ー１６５０
０号公報に提案されている。
また、不織布を加工して吸液性、肌触りを改良しようと
するものとして、低融点繊維を含む厚さ０、１〜３．０
ｍｍのウェブの片面に他面に達する部分熱圧着エンボス
処理し、表層を点在状に熱接着せしめた衛生シートが特
開昭５９−４６９５８号公報、特開昭６１−２８２４６
４号公報に、不織布繊維密度が高い条部と低い条部とが
衛生用品の幅方向に交互に配列された縦縞模様を有した
外装不織布が特公昭６０−５０４５８号公報に、メルト
ブロー不織布に多数の溶融型押しされた領域とそれに隣
接する実質的に溶融していない領域とを有する熱可塑性
繊維ウェブからなるナプキン用表面材孔あき不織布が特
開昭６１−６５５号公報に、多数の開孔が配設された不
織布からなるトップシートを使用した吸収性物品が特開
昭６３−２４９４４号公報に提案されている。Conventionally, many proposals have been made for nonwoven fabrics used as facings for sanitary products. For example, in an attempt to improve liquid absorption and dispersion by adding characteristics to the structure of a nonwoven fabric, a nonwoven fabric is made of multiple layers, with the front layer being 60 to 80% polyester fibers and 20 to 20% rayon fibers.
40%, the inner layer is 20% polyester fiber.
~40%, G-3F1 A nonwoven facing material consisting of 40 to 50% composite fibers is disclosed in Japanese Patent Publication No. 60-29488, with a first layer mainly consisting of hydrophobic fibers and a first layer mainly consisting of hydrophilic fibers of 2 deniers or less. Japanese Utility Model Application Publication No. 60-189505 discloses a non-woven diaper facing material in which a web of laminated second layers is partially bonded, and fibers having different amounts of binder fibers and hydrophilicity are laminated in the upper layer and the lower layer. JP-A No. 61-2854 discloses that a nonwoven fabric is used as a surface material, and is a composite web consisting of two layers, the front layer containing 20 to 55% by weight of heat-sealable fibers, and the back layer containing more fiber than the surface layer. Japanese Patent Publication No. 61-13820 discloses a cover for sanitary materials containing heat-fusible fibers, which are fused at mutual intersections by the fusible fibers. A surface material for an absorbent article made of a non-porous second layer of laminated nonwoven fabric made of fibers mainly composed of hydrophilic fibers is disclosed in JP-A-61-15343 and JP-A-62-170565. A surface material for disposable diapers made by laminating three types of nonwoven fabrics with different fiber lengths is disclosed in JP-A-61-186504, and a wet-laid non-woven fabric made of non-circular cross-section polyester fibers is disclosed in JP-A-61-1865 as a covering paper for sanitary absorbent materials. 15693, polyester fiber: rayon fiber: polyolefin fiber is 45 to 80:
Date l~4 mixed fibers at a ratio of 20~40:10~30
0g/m" perforated nonwoven fabric for the facing of sanitary products such as sanitary napkins and diapers.
No. 1-32671 discloses that a dry nonwoven fabric made of three or more multilobed irregular cross-section fibers and a thermal binder fiber,
A facing made of a nonwoven fabric that prevents backflow of liquid is disclosed in Japanese Patent Publication No. 62-27161, with a surface fiber web mainly made of polyester-polyethylene composite fibers, and a side-by-side facing made of polyester-polyethylene composite fibers and polyester-high shrinkage polyester. JP-A No. 63-40549 discloses a surface sheet formed by laminating and integrating a back layer fiber web of composite fibers with a first surface layer of non-crimped fibers consisting only of heat-fusible fibers and crimped fibers. Japanese Patent Publication No. 64-9020 discloses an absorbent article whose surface material is a nonwoven fabric comprising a second layer of fibers imparted with hydrophobic fibers, a high-density upper layer with fine fineness mainly composed of hydrophobic fibers, and a second layer of fibers imparted with hydrophobic fibers. Japanese Patent Publication No. 1-1650 discloses a nonwoven fabric-like exterior material consisting of a low-density lower layer made of thick fineness and hydrophilic fibers and hydrophilic fibers.
This is proposed in Publication No. 0. In addition, in order to improve the absorbency and texture of non-woven fabrics by processing non-woven fabrics, thicknesses of 0, 1 to 3.0 including low melting point fibers are available.
A sanitary sheet in which one side of a mm web is partially thermocompressed and embossed to reach the other side, and the surface layer is thermally bonded in a dotted manner is disclosed in JP-A-59-46958 and JP-A-61-28246.
Japanese Patent Application Publication No. 60-50458 describes an exterior nonwoven fabric having a vertical striped pattern in which stripes with high and low fiber density are arranged alternately in the width direction of sanitary products, and a large number of melt-blown nonwoven fabrics are disclosed in Japanese Patent Publication No. 50458/1983. Japanese Patent Laid-Open No. 61-655 discloses a perforated nonwoven fabric for a napkin surface material comprising a thermoplastic fiber web having a melt-embossed region and an adjacent substantially unmelted region. An absorbent article using a top sheet made of a nonwoven fabric on which is disposed is proposed in Japanese Patent Application Laid-Open No. 63-24944.
従来の衛生用品のフェーシングは表面の毛羽だちを抑え
、形態の保持性が良く、肌触り、風合いおよび液体の戻
りを抑制することを主体に改良がなされてきたが、従来
のフェーシング不織布の構成繊維の主体が合成繊維であ
るために、透明度が高く、それがために使用後の衛生用
品は吸収した体液により着色した内部の吸収体が透けて
見え、不快感を抱くことがある。更に、体液の吸収、拡
散があまり良いものではない。
本発明は表面の毛羽だちを抑え、形態の保持性が良く、
肌触り、風合いおよび液体の戻りを抑制すると共に、体
液の吸収、拡散が速やかに行われ、吸収した体液が透け
て見えない隠蔽効果を有する衛生材用品のフェーシング
を提供するにある。Conventional facings for sanitary products have been improved mainly to suppress surface fuzz, retain their shape, improve texture, and suppress liquid return.However, the constituent fibers of conventional facing nonwoven fabrics Because they are mainly made of synthetic fibers, they are highly transparent, which can cause discomfort as the inner absorbent material colored by absorbed body fluids can be seen through the sanitary products after use. Furthermore, absorption and diffusion of body fluids is not very good. The present invention suppresses fuzz on the surface and has good shape retention.
To provide a facing for a sanitary product that suppresses the touch and texture and the return of liquid, quickly absorbs and diffuses body fluids, and has a concealing effect so that the absorbed body fluids cannot be seen through.
本発明は、固有粘度〔η〕が０．０５５〜０．０８５４
／ｇの範囲にあるエチレン含有量４０〜６０モル％のエ
チレン−酢酸ビニル共重合体鹸化物あるいは該重合体を
主体とした重合体からなる平均繊維直径８ミクロン以下
のメルトブローン不織布で構成されていることを特徴と
する衛生用品のフェーシングである。
また、本発明は、固有粘度〔η〕が０．０５５〜０．０
８５Ｑ／ｇの範囲にあるエチレン含有量４０〜６０モル
％のエチレン−酢酸ビニル共重合体鹸化物あるいは該重
合体を主体とした重合体からなる平均繊維直径８ミクロ
ン以下のメルトブローン不織布で構成され、圧縮による
透明化または半透明化された条部Ａと不透明条部Ｂとが
衛生用品の幅方向に交互に配列された縦縞模様を有して
いることを特徴とする衛生用品のフェーシングである。
また、本発明は、熱可塑性疎水性重合体繊維と熱バイン
ダー繊維とからなる不織布を表層とし、固有粘度〔η〕
が０．０５５〜０．０８５（２／ｇの範囲にあるエチレ
ン含有量４０〜６０モル％のエチレン−酢酸ビニル共重
合体鹸化物あるいは該重合体を主体とした重合体からな
る平均繊維直径８ミクロン以下のメルトブローン不織布
を下層とした積層不織布で構成され、該積層不織布は圧
縮による透明化または半透明化された条部Ａと不透明条
部Ｂとが衛生用品の幅方向に交互に配列された縦縞模様
を有していることを特徴とする衛生用品のフェーシング
である。
更に、本発明は二酸化チタンを０．３〜２重量％含有し
た固有粘度〔η〕が０．０５５〜０．０８５Ｑ／ｇの範
囲にあるエチレン含有量４０〜６０モル％のエチレン−
酢酸ビニル共重合体鹸化物あるいは該重合体を主体とし
に重合体からなる平均繊維直径８ミクロン以下のメルト
ブローン不織布で構成され、圧縮による透明化または半
透明化された条部Ａと不透明条部Ｂとが衛生用品の幅方
向に交互に配列された縦縞模様を有していることを特徴
とする衛生用品のフェーシングである。
本発明の衛生用品のフェーシングは、特定の物性範囲に
あるエチレン−酢酸ビニル共重合体鹸化物をメルトブロ
ーン紡糸法で均一性の良好な極細繊維不織布を製造し、
そのメルトブローン極細繊維不織布を加工することにあ
る。
すなわち、本発明の衛生用品のフェーシングを構成する
エチレン−酢酸ビニル共重合体鹸化物は、エチレン含有
量が４０〜６０モル％の範囲にあり、固有粘度〔η〕が
０．０５５〜０．０８５ｌ／ｇの重合体である。重合体
のエチレン含有量が４０モル％未満である場合には、重
合体の熱安定性が悪くなり、溶融粘度が上昇し、不溶融
性物（ゲル状物）が発生して安定なメルトブローン法紡
糸ができないとか、良好な繊維流の形成が得られないと
か、不織布中に未溶粒物などの粒状物の混入が多くなる
などして、良好な不織布を製造することができない。一
方、エチレン含有量が６０モル％を越えて多くなると、
ポリビニルアルコール特有の剛性、引張特性、吸液性、
液の拡散性、耐熱性が低下し、不織布の触感がポリオレ
フィン様あるいはワックス様の好ましくないものとなる
。更に、柔軟な不織布を製造するのに適したエチレン−
酢酸ビニル共重合体鹸化物は、重合体溶液で測定した固
有粘度〔η〕が０．０５５〜０．０８！Ｍ／ｇの範囲の
重合体である。この固有粘度〔η〕が０．０５５ｆ２／
ｇ未満では溶融粘度が小さくて、十分な曳糸性が得られ
ず、十分に細化した良好な繊維流を形成することができ
ないため、均一性の良い不織布が得られないとか、不織
布中に微小な玉状物が多数混入するとか、不織布の強力
が低く、腰がなくなるとか、耐熱性が低下するなどのた
めに好ましくないものとなる。一方、固有粘度〔η〕が
０．０８５Ｑ／ｇを越えて高粘度になると、メルトブロ
ーン法では十分に細化、配向した繊維の繊維流を形成す
ることができないため、均一性の良い極細繊維不織布を
得ることができず、得られた不織布は強力が弱く、風合
いの粗硬なものとなって柔軟で肌触りの良い、フェーシ
ング材として適したものにならない。
更に、本発明の衛生用品のフェーシングは、極細繊維の
不織布であるため、通常の繊維不織布に比較して不透明
性であり、隠蔽効果は高いものの、フェーシングの厚み
が薄いものでは十分な隠蔽効果が得られない。そのため
、構成する重合体には二酸化チタンを０．３〜２重量％
添加して紡糸し、艶消し極細繊維とすることも好ましい
。
次に、重合体のメルトブローン紡糸法は、紡糸温度２７
０〜３００℃、搬送気体圧力（ゲージ圧力）０．５〜５
Ｋｇ／ｃ−の条件下で紡糸することによって、平均繊維
直径８ミクロン以下の極細繊維が得られ、均一性の良好
な繊維流を形成することができる。この繊維流をコンベ
アーネット上にシート状に捕集することによって、広幅
であっても均一性の良好な極細繊維不織布とすることが
できる。この不織布の目付は、衛生用品の使用目的によ
って異なり、生理用ナプキン、母乳バットなどのフェー
シングでは薄めであり、おむつなどのフェーシングでは
やや厚めであるが、一般に、平均日付は１０〜６０ｇ／
ｍ”の範囲である。また、２層の積層不織布として使用
する場合には、１層の不織布平均目付が８〜３０ｇ／ｍ
２の範囲である。
次に、得られたメルトブローン極細繊維不織布は、少な
くとも肌に接する面を緻密化して繊維の接触部のみが接
着する処理を行う。すなわち、捕集した極細繊維不織布
の一面あるいは両面を、繊維を軟化する温度に加熱した
ロールあるいはエンドレスベルトでプレス処理すること
によって不織布面を緻密化し、繊維の接触部を接着させ
る。また、好ましい不織布の処理方法は、プレス機に使
用スるロールあるいはエンドレスベルトの一方の面が深
い凹部と凸部が０．７〜２ｍｍ間隔で交互に配列した縦
縞模様を彫刻したエンボスロールあるいはエンドレスベ
ルトを使用することであり、そのエンボス機で不織布を
エンボスして、強く圧縮され透明化または半透明化した
条部Ａと弱くまたは殆ど圧縮されず不透明なままの条部
Ｂとが衛生用品の幅方向に交互に配列された縦縞模様を
形成したものとする。それによってフェーシングとして
は柔軟で伸縮性があり、肌添い性がよくなると共に、体
液の吸収、拡散性を高めることができる。
また、本発明のエチレン−酢酸ビニル共重合体鹸化物に
は他の熱可塑性重合体、例えば、ポリエチレン、ポリプ
ロピレン、ポリブチレンなどのポリオレフィン、ポリビ
ニルアルコール、ナイロン−６、ナイロン−６６、ナイ
ロン−６１０などのポリアミド、ポリエチレンテレフタ
レート、ポリブチレンテレフタレートなどのポリエステ
ルから選ばれた重合体を混合して紡糸し、フェーシング
材としての不織布の物性を改善することもよい。
更に、本発明の衛生用品のフェーシングは、肌に接する
表層不織布として熱可塑性疎水性重合体繊維、例えば、
ポリエチレンテレフタレート繊維、エチレンテレフタレ
ート共重合体繊維、ポリブチレンテレフタレート繊維、
ポリプロピレン繊維などから選ばれた熱可塑性疎水性重
合体繊維と、熱バインダー繊維、例えば、ポリエチレン
繊維、ポリプロピレン繊維、ポリエチレン繊維・リプロ
ピレン複合繊維、ポリエチレン／ポリエステル複合繊維
、共重合ポリエステル／ポリエチレンテレフタレート複
合繊維などから選ばれた熱バインダー繊維とを、熱可塑
性疎水性重合体繊維３０〜８０重量％、熱バインダー繊
維７０〜２０重量％の範囲でＲＩｍして得た混繊不織布
を用い、エチレン−酢酸ビニル共重合体鹸化物あるいは
該重合体を主体とした重合体でなる平均繊維直径８ミク
ロン以下のメルトブローン不織布を下層として積層し、
その積層した不織布をフェーシングとして使用すること
も、肌触り、体液の通過性などの改良として効果的であ
る。
本発明の衛生用品のフェーシングは表面ノ毛羽だちを抑
え、表面形態の保持性がよく、柔軟で伸縮性があり、肌
触り、肌添い性、体液の吸収、拡散性がよく、かつ液体
の戻りを抑制し、透けて見えない隠蔽効果の高いフェー
シングである。このフェーシングはおむつ、生理用ナプ
キン、母乳バット、産褥バット、失禁者用バット、化粧
用パフなどの衛生用品のフェーシングとして好適である
。The present invention has an intrinsic viscosity [η] of 0.055 to 0.0854.
It is composed of a melt-blown nonwoven fabric with an average fiber diameter of 8 microns or less, which is made of a saponified ethylene-vinyl acetate copolymer with an ethylene content of 40 to 60 mol% in the range of /g or a polymer mainly composed of this polymer. This is a facing for sanitary products that is characterized by: Further, the present invention has an intrinsic viscosity [η] of 0.055 to 0.0.
Consisting of a melt-blown nonwoven fabric with an average fiber diameter of 8 microns or less, made of a saponified ethylene-vinyl acetate copolymer with an ethylene content of 40 to 60 mol% in the range of 85Q/g, or a polymer mainly composed of this polymer, This facing of a sanitary product is characterized in that it has a vertical striped pattern in which striations A and opaque striations B, which have been made transparent or translucent by compression, are arranged alternately in the width direction of the sanitary product. In addition, the present invention has a nonwoven fabric made of thermoplastic hydrophobic polymer fibers and thermal binder fibers as a surface layer, and has an intrinsic viscosity [η]
is 0.055 to 0.085 (2/g), and the average fiber diameter is 8 It is composed of a laminated nonwoven fabric with a sub-micron melt-blown nonwoven fabric as the lower layer, and the laminated nonwoven fabric has stripes A and opaque stripes B, which have been made transparent or translucent by compression, and are arranged alternately in the width direction of the sanitary product. This is a facing for a sanitary product characterized by having a vertical striped pattern.Furthermore, the present invention is a facing for a sanitary product that contains 0.3 to 2% by weight of titanium dioxide and has an intrinsic viscosity [η] of 0.055 to 0.085Q/ Ethylene with an ethylene content of 40 to 60 mol% in the range of g
Composed of a saponified vinyl acetate copolymer or a melt-blown nonwoven fabric mainly composed of this polymer and having an average fiber diameter of 8 microns or less, the strip A and the opaque strip B are made transparent or translucent by compression. This facing of a sanitary product is characterized in that it has a vertical striped pattern alternately arranged in the width direction of the sanitary product. The facing of the sanitary goods of the present invention is produced by producing a microfiber nonwoven fabric with good uniformity using a melt-blown spinning method using a saponified ethylene-vinyl acetate copolymer having a specific physical property range.
The purpose is to process the melt-blown microfiber nonwoven fabric. That is, the saponified ethylene-vinyl acetate copolymer constituting the facing of the sanitary product of the present invention has an ethylene content in the range of 40 to 60 mol% and an intrinsic viscosity [η] of 0.055 to 0.085 l. /g of polymer. If the ethylene content of the polymer is less than 40 mol%, the thermal stability of the polymer will deteriorate, the melt viscosity will increase, and infusible matter (gel-like matter) will be generated, making it difficult to use a stable melt-blown method. A good nonwoven fabric cannot be produced because spinning cannot be performed, good fiber flow cannot be formed, or particulate matter such as undissolved particles increases in the nonwoven fabric. On the other hand, when the ethylene content increases beyond 60 mol%,
Rigidity, tensile properties, liquid absorption properties unique to polyvinyl alcohol,
Liquid diffusibility and heat resistance are reduced, and the nonwoven fabric has an undesirable polyolefin-like or wax-like feel. Additionally, ethylene is suitable for producing flexible non-woven fabrics.
The saponified vinyl acetate copolymer has an intrinsic viscosity [η] of 0.055 to 0.08 when measured with a polymer solution! M/g range of polymers. This intrinsic viscosity [η] is 0.055f2/
If the melt viscosity is less than This is undesirable because a large number of minute beads are mixed in, the strength of the nonwoven fabric is low and it loses its elasticity, and its heat resistance is reduced. On the other hand, if the intrinsic viscosity [η] exceeds 0.085Q/g and the viscosity becomes high, the melt blowing method cannot form a fiber stream of sufficiently thinned and oriented fibers, so the ultrafine fiber nonwoven with good uniformity cannot be produced. The resulting nonwoven fabric is not strong enough and has a rough and hard texture, making it unsuitable for use as a facing material that is soft and pleasant to the touch. Furthermore, since the facing of the sanitary product of the present invention is a non-woven fabric made of ultra-fine fibers, it is more opaque than ordinary fiber non-woven fabrics and has a high concealing effect, but if the facing is thin, it may not have a sufficient concealing effect. I can't get it. Therefore, the constituent polymer contains 0.3 to 2% by weight of titanium dioxide.
It is also preferable to add it and spin it into matte ultrafine fibers. Next, in the melt-blown spinning method of polymer, the spinning temperature is 27
0~300℃, carrier gas pressure (gauge pressure) 0.5~5
By spinning under the conditions of Kg/c-, ultrafine fibers with an average fiber diameter of 8 microns or less can be obtained, and a fiber stream with good uniformity can be formed. By collecting this fiber flow in the form of a sheet on a conveyor net, it is possible to obtain an ultrafine fiber nonwoven fabric with good uniformity even if it is wide. The basis weight of this nonwoven fabric varies depending on the purpose of use of the sanitary product, and is thin for facings such as sanitary napkins and breast milk bats, and slightly thicker for facings such as diapers, but in general, the average weight is 10 to 60g/
When used as a two-layer laminated nonwoven fabric, the average basis weight of one layer of nonwoven fabric is 8 to 30 g/m.
The range is 2. Next, the obtained melt-blown ultrafine fiber nonwoven fabric is subjected to a treatment in which at least the surface that contacts the skin is densified so that only the contact portions of the fibers are bonded. That is, one or both sides of the collected microfiber nonwoven fabric is pressed with a roll or endless belt heated to a temperature that softens the fibers, thereby making the surface of the nonwoven fabric dense and bonding the contact areas of the fibers. In addition, a preferred method for processing the nonwoven fabric is an embossed roll or endless belt in which one surface of a roll used in a press machine is engraved with a vertical striped pattern in which deep concave portions and convex portions are arranged alternately at intervals of 0.7 to 2 mm. By using a belt, the nonwoven fabric is embossed with the embossing machine, and the strips A are strongly compressed and become transparent or translucent, and the strips B are weakly compressed or hardly compressed and remain opaque. A vertical striped pattern alternately arranged in the width direction is formed. As a result, the facing is flexible and stretchable, has good skin adhesion, and can improve absorption and diffusion of body fluids. The saponified ethylene-vinyl acetate copolymer of the present invention may also contain other thermoplastic polymers, such as polyolefins such as polyethylene, polypropylene, and polybutylene, polyvinyl alcohol, nylon-6, nylon-66, and nylon-610. It is also possible to improve the physical properties of the nonwoven fabric as a facing material by mixing and spinning a polymer selected from polyesters such as polyamide, polyethylene terephthalate, and polybutylene terephthalate. Furthermore, the facing of the sanitary product of the present invention comprises a thermoplastic hydrophobic polymer fiber, for example, as a surface nonwoven fabric in contact with the skin.
Polyethylene terephthalate fiber, ethylene terephthalate copolymer fiber, polybutylene terephthalate fiber,
Thermoplastic hydrophobic polymer fibers selected from polypropylene fibers and thermal binder fibers, such as polyethylene fibers, polypropylene fibers, polyethylene fibers/lipropylene composite fibers, polyethylene/polyester composite fibers, copolymerized polyester/polyethylene terephthalate composite fibers Using a mixed fiber nonwoven fabric obtained by RIm of thermoplastic hydrophobic polymer fibers with thermal binder fibers selected from A melt-blown nonwoven fabric made of a saponified copolymer or a polymer mainly composed of the copolymer and having an average fiber diameter of 8 microns or less is laminated as a lower layer,
Using the laminated nonwoven fabric as a facing is also effective in improving the texture and permeability of body fluids. The facing of the sanitary product of the present invention suppresses surface fuzz, has good surface shape retention, is flexible and stretchable, has good texture, skin-friendly properties, good absorption and diffusion of body fluids, and has good liquid return properties. This is a facing that has a high concealment effect and suppresses the amount of visible light. This facing is suitable as a facing for sanitary products such as diapers, sanitary napkins, breast milk vats, postpartum vats, incontinent vats, and cosmetic puffs.
次に、本発明の実施態様を具体的な実施例で説明するが
、本発明はこれら実施例に限定されるものではない。な
お、実施例中の部および％は断りのない限り、重量に関
するものである。
また、本発明のエチレン−酢酸ビニル共重合体鹸化物の
固有粘度〔η〕は、フェノール８５％、水１５％の混合
溶媒に溶解し、毛細管粘度計を用いて温度３０℃で測定
し、固有粘度〔η〕を次式で求めた。
η、、ａ＋＋ （ｔ−ｔｏ）／ｌｏ−（ｔ／１ｏ）−
１（η）−Ｊｉｍη、、／Ｃ
ただし、ｔ は溶液の流下時間（秒）
ｔｏは溶媒の流下時間（秒）
Ｃは重合体の濃度（ｇｌｏ
更に、液体の吸収、拡散性の判定は、液体吸収材として
濾紙（東洋濾紙株式会社製、Ｎｏ、５濾紙）を１０枚重
ね、その上に被測定不織布を載置し、赤インキで着色し
た生理食塩水１ｍｌを滴下し、表面に水滴がなくなるま
でに要した時間で判定した。
実施例１
エチレン含有量４７モル％、鹸化度９８モル％、固有粘
度〔η）＝０．０６６ｌ／ｇのエチレン−酢酸ビニル共
重合体鹸化物をエクストルーダーで溶融し、メルトブロ
ーン用ダイに直径０．３ｍｍの吐出孔をｌ ｍｍ間隔で
一列に配列したノズル部と、その両側に輻０．２５ｍｍ
の気体噴出用スリットを設けたダイを用い、溶融紡糸温
度２８０℃、孔当たりの吐出量０．２ｇ／分で吐出させ
、搬送空気温度２８Ｑ’Ｏ，空気ゲージ圧１．５Ｋｇ／
ｃ−の条件でメルトブローン法で紡糸し、紡出極細繊維
流はダイより約２５ｃｍの位置に設置した、一定速度で
走行するベルトコンベアーネット捕集機のネット上に捕
集して、平均目付２５ｇ／ｍ”のメルトプローン不織布
Ｉを得た。
このメルトブローン不織布を走査型電子顕微鏡（以下Ｓ
ＥＭと略記する）で５００倍に拡大して観察したところ
、不織布構成繊維の平均直径は約４．７ミクロンであっ
た。また、該不織布は緻密な集積状態ではあるが柔軟な
風合いを有していた。
このメルトブローン不織布に圧着部面積２０％、線圧力
５ Ｋｇ／ Ｃｍ、ロール温度１００℃、処理速度１０
ｍ／分でエンボスカレンダーロールでプレス処理を行っ
て、表面が平滑で繊維の大部分を接合した不織布を得た
。得られｔ；不織布は強力が高く、表面が平滑で伸長性
があるため肌添い性、肌触りが良く、更に全体が不透明
な不織布であった。この不織布の生理食塩水吸収時間は
平均０．９秒であって、良好なものであった。
この極細繊維不織布を生理用バットのフェーシングに使
用したところ、肌触り、着用感の良いものであった。
比較例１
エチレン含有量４９モル％、鹸化度９８％、固有粘度〔
η）−０，０９２Ｑ／ｇのエチレン−酢酸ビニル共重合
体鹸化物を実施４１と同じ装置でメルトブローン法紡糸
を行った。しかし、実施例１と同一条件では十分な紡糸
性が得られないため、紡糸温度を３００ ’Ｏ１搬送空
気温度３００℃、空気ゲージ圧５Ｋｇ／Ｃｍ”に変更し
て紡糸した。しかし、溶融粘度が高くて十分に細化した
繊維が得られず、繊維の太さは不揃いで、細い繊維でも
平均直径が約ｌミクロンもあり、しかも均一性の良い極
細繊維流は得られなかった。また、得られた不織布は粗
硬なものであって、強力も弱くフェーシングに加工して
使用しても、ざらつき感が有り肌触りの悪いものであっ
た。
実施例２
実施例１のメルトブローン不織布Ｉを、深い凹部と凸部
が約１ ｍｍ間隔で交互に配列した縦縞模様を彫刻した
エンボスロールを使用し、エンボスロール温度１１５℃
、線圧力２−５ Ｋｇ／ ｃｍ、処理速度１０ｍ／分で
不織布をエンボスして、強く圧縮された条部Ａと弱く圧
縮された条部Ｂとが幅方向に交互に配列された縦縞模様
を形成した極細繊維不織布を得た。この加工した不織布
は強く圧縮された条部Ａは繊維の大部分が熱圧着されほ
ぼ透明化しており、弱く圧縮された条部Ｂは表面の繊維
の大部分が接合しているが不透明なままの不織布である
。得られた不織布は強力が高く、柔軟で伸縮性があるた
め肌添い性、肌触りが良く、更に全体としては不透明性
の高い不織布であった。この不織布の生理食塩水吸収時
間は平均０．７秒であって、良好な液体吸収、拡散性の
ものであった。
この極細繊維不織布を生理用バットのフェーシングに使
用したところ、肌触り、着用感の良いものであって、液
体吸収速度の速いものであった。
実施例３
エチレン含有量５５モル％、鹸化度９８％、固有粘度〔
η）−０，０７２ｌ／ｇのエチレン−酢酸ビニル共重合
体鹸化物９９部、二酸化チタン１部とを混練して実施例
１と同じ装置、同じ紡糸条件でメルトブローン法紡糸を
行った。紡糸性は良好で、平均直径が約５ミクロンの極
細繊維の、平均目付２５ｇ／ｍ”の均一性の良いメルト
ブローン不織布が得られた。このメルトブローン不織布
は木綿で作られた布帛に類似の触感と風合いを有してい
た。
この極ｍ繊維不織布に実施例２で用いた深い凹凸模様の
彫刻を施したエンボスロールを用い、ロール温度ｌ０℃
、線圧力３Ｋｇ／ａｍでエンボスを行った。得られた不
織布は伸長切断強力が高く、柔軟で伸縮性があって肌添
い性が良く、シかも高い隠蔽性の有るもので、この不織
布の生理食塩水吸収時間は平均０．８秒であって、良好
な液体吸収、拡散性のものであった。
この極細繊維不織布を生理用バットのフェーシングに使
用したところ、肌触り、着用感の良いものであって、液
体吸収速度が速く、吸収した体液による着色を隠蔽して
着用時の不快感のないものであっＩ；。
実施例４
繊度２デニール、繊維長３８ｍｍからなるポリエチレン
テレフタレート繊維５５部と、熱バインダー繊維として
鞘成分が共重合体ポリエステル、芯成分がポリエチレン
テレフタレートの芯鞘型複合繊維４５部を混繊し、ラン
ダムウニバーで平均目付１０ｇ／ｍ”の乾式ウェブＩを
作った。
一方、エチレン含有量４３モル％、鹸化度９８モル％、
固有粘度〔η）−０，０６２Ｑ／ｇのエチレン−酢酸ビ
ニル共重合体鹸化物をエクストルーダーで溶融し、メル
トブローン用ダイに直径０．３ｍｍの吐出孔を１ｍｍ間
隔で一列に配列したノズル部と、その両側に輻０．２５
ｍｍの気体噴出用スリットを設けたダイを用い、溶融紡
糸温度２８０℃、孔当たりの吐出量０．２ｇ／分で吐出
させ、搬送空気温度２８０ ’Ｃ！、空気ゲージ圧１．
５ Ｋｇ／ ｃｍ”の条件でメルトプロコン法で紡糸し
て、平均繊維直径４．４ミクロンの極細繊維を紡出し、
極細繊維流はグイより約２５ｃｍの位置に設置した、一
定速度で走行するベルトコンベアーネット捕集機のネッ
ト上に捕集して、平均目付１３ｇ／ｍ”のメルトプロー
ン不織布■を得た。
次いで、メルトプローン不織布■の表面に、上記乾式ウ
ェブＩを載置し、実施例２と同様に縦縞模様を彫刻した
エンボスロールで積層不織布にエンボス加工を行い、積
層不織布を一体化すると共に縦縞模様を付与してフェー
シング材を作った。
このフェーシング材を用いて生理用ナプキンを作り着用
試験を行ったところ、肌触りが一層良くなり、体液の吸
収拡散性も更に良くなった。Next, embodiments of the present invention will be explained using specific examples, but the present invention is not limited to these examples. Note that parts and percentages in the examples are by weight unless otherwise specified. In addition, the intrinsic viscosity [η] of the saponified ethylene-vinyl acetate copolymer of the present invention is determined by dissolving it in a mixed solvent of 85% phenol and 15% water and measuring it at a temperature of 30°C using a capillary viscometer. The viscosity [η] was determined using the following formula. η,, a++ (t-to)/lo-(t/1o)-
1(η)-Jimη, , /C where t is the solution flow time (seconds), to is the solvent flow time (seconds), and C is the concentration of the polymer (glo). 10 sheets of filter paper (manufactured by Toyo Roshi Co., Ltd., No. 5 filter paper) were stacked as a liquid absorbing material, the nonwoven fabric to be measured was placed on top of the filter paper, and 1 ml of physiological saline colored with red ink was dripped on top of it, so that water droplets appeared on the surface. Judgment was made based on the time required for the water to disappear. Example 1 A saponified ethylene-vinyl acetate copolymer having an ethylene content of 47 mol%, a degree of saponification of 98 mol%, and an intrinsic viscosity [η) of 0.066 l/g was extruded. The melt blown die has a nozzle part with discharge holes of 0.3 mm in diameter arranged in a row at 1 mm intervals, and a nozzle part with a radius of 0.25 mm on both sides.
Using a die equipped with a slit for blowing out gas, the melt spinning temperature was 280°C, the discharge amount per hole was 0.2 g/min, the conveying air temperature was 28 Q'O, and the air gauge pressure was 1.5 kg/min.
The spun fibers were spun using the melt-blown method under the conditions of c-, and the spun ultrafine fiber stream was collected on the net of a belt conveyor net collection machine installed at a position approximately 25 cm from the die and running at a constant speed to obtain an average basis weight of 25 g. /m" melt-blown nonwoven fabric I was obtained. This melt-blown nonwoven fabric was examined under a scanning electron microscope (hereinafter referred to as S
When observed under 500 times magnification using an EM (abbreviated as EM), the average diameter of the fibers constituting the nonwoven fabric was about 4.7 microns. Further, although the nonwoven fabric was in a densely accumulated state, it had a soft texture. This melt-blown non-woven fabric has a crimped area of 20%, a linear pressure of 5 Kg/Cm, a roll temperature of 100°C, and a processing speed of 10%.
Pressing was performed with an embossing calendar roll at a speed of m/min to obtain a nonwoven fabric with a smooth surface and most of the fibers bonded together. Obtained: The nonwoven fabric had high strength, had a smooth surface and extensibility, so it was comfortable to the skin and felt good against the skin, and was completely opaque. The physiological saline absorption time of this nonwoven fabric was 0.9 seconds on average, which was good. When this microfiber nonwoven fabric was used for the facing of a sanitary bat, it felt good to the touch and comfortable to wear. Comparative Example 1 Ethylene content 49 mol%, degree of saponification 98%, intrinsic viscosity [
A saponified ethylene-vinyl acetate copolymer of η)-0,092Q/g was subjected to melt-blown spinning using the same apparatus as in Example 41. However, sufficient spinability could not be obtained under the same conditions as in Example 1, so the spinning temperature was changed to 300°C, the conveying air temperature was 300°C, and the air gauge pressure was 5Kg/Cm. It was difficult to obtain fibers that were high and sufficiently fine, the thickness of the fibers was uneven, and even the thin fibers had an average diameter of about 1 micron, and it was not possible to obtain a flow of ultrafine fibers with good uniformity. The nonwoven fabric obtained was coarse and hard, and had a rough feel and was uncomfortable to the touch even when processed into a facing. An embossing roll engraved with a vertical striped pattern in which recesses and protrusions are arranged alternately at approximately 1 mm intervals was used, and the embossing roll temperature was 115°C.
The nonwoven fabric was embossed at a linear pressure of 2-5 Kg/cm and a processing speed of 10 m/min to form a vertical striped pattern in which strongly compressed stripes A and weakly compressed stripes B were arranged alternately in the width direction. An ultrafine fiber nonwoven fabric was obtained. In this processed nonwoven fabric, most of the fibers in the strongly compressed strip A are bonded by thermocompression and become almost transparent, and in the weakly compressed strip B, most of the fibers on the surface are bonded but remain opaque. It is a non-woven fabric. The obtained nonwoven fabric was highly strong, flexible, and stretchable, so it had good skin adhesion and touch, and was highly opaque as a whole. The physiological saline absorption time of this nonwoven fabric was 0.7 seconds on average, and it had good liquid absorption and diffusivity. When this microfiber nonwoven fabric was used for the facing of a sanitary bat, it felt good to the touch and comfortable to wear, and had a fast liquid absorption rate. Example 3 Ethylene content 55 mol%, degree of saponification 98%, intrinsic viscosity [
η)-0,072 l/g of saponified ethylene-vinyl acetate copolymer and 1 part of titanium dioxide were kneaded and subjected to melt-blown spinning using the same equipment and spinning conditions as in Example 1. The spinnability was good, and a melt-blown non-woven fabric with good uniformity and an average basis weight of 25 g/m'' was obtained, consisting of ultra-fine fibers with an average diameter of about 5 microns.This melt-blown non-woven fabric had a texture similar to that of a fabric made of cotton. The ultra-m fiber nonwoven fabric was engraved with the deep uneven pattern used in Example 2 using an emboss roll, and the roll temperature was 10°C.
Embossing was performed at a linear pressure of 3 kg/am. The obtained nonwoven fabric has high elongation cutting strength, is flexible and stretchable, has good skin adhesion, and has high stain hiding properties.The average saline absorption time of this nonwoven fabric is 0.8 seconds. It had good liquid absorption and diffusivity. When this ultra-fine fiber nonwoven fabric was used for the facing of a sanitary bat, it felt good to the touch and comfortable to wear, had a fast liquid absorption rate, and concealed the coloring caused by absorbed body fluids, causing no discomfort when worn. Ah I;. Example 4 55 parts of polyethylene terephthalate fiber with a fineness of 2 denier and a fiber length of 38 mm was mixed with 45 parts of a core-sheath composite fiber whose sheath component was a copolymer polyester and whose core component was polyethylene terephthalate as a thermal binder fiber, and randomly Dry web I with an average basis weight of 10 g/m'' was made using Univar. On the other hand, the ethylene content was 43 mol%, the degree of saponification was 98 mol%,
A saponified ethylene-vinyl acetate copolymer having an intrinsic viscosity of [η)-0,062Q/g was melted using an extruder, and a nozzle part in which discharge holes with a diameter of 0.3 mm were arranged in a row at 1 mm intervals in a melt-blown die was prepared. , convergence 0.25 on both sides
Using a die equipped with a mm-thick gas ejection slit, the melt spinning temperature was 280°C, the discharge amount per hole was 0.2 g/min, and the conveying air temperature was 280'C! , air gauge pressure 1.
5 Kg/cm" using the melt procon method to produce ultrafine fibers with an average fiber diameter of 4.4 microns.
The ultrafine fiber stream was collected on the net of a belt conveyor net collector installed at a position approximately 25 cm from the wire and running at a constant speed to obtain a melt-prone nonwoven fabric ■ with an average basis weight of 13 g/m. , the dry web I was placed on the surface of the melt-prown nonwoven fabric ■, and the laminated nonwoven fabric was embossed using an embossing roll engraved with a vertical striped pattern in the same manner as in Example 2, thereby integrating the laminated nonwoven fabric and forming a vertical striped pattern. When a sanitary napkin was made using this facing material and a wear test was conducted, it felt even better on the skin and had better absorption and diffusion of body fluids.
本発明の衛生用品のフェーシングは表面の毛羽だちを抑
え、表面形態の保持性がよく、柔軟で伸縮性があり、肌
触り、肌添い性、体液の吸収、拡散性がよく、かつ液体
の戻りを抑制し、透けて見えない隠蔽効果の高いフェー
シングである。このフェーシングはおむつ、生理用ナプ
キン、母乳バット、産褥バットなどの衛生用品のフェー
シングとして好適である。The facing of the sanitary product of the present invention suppresses surface fuzz, has good surface shape retention, is flexible and stretchable, has good texture, skin-friendly properties, good absorption and diffusion of body fluids, and liquid return. This is a facing that has a high concealment effect and suppresses the amount of visible light. This facing is suitable as a facing for sanitary products such as diapers, sanitary napkins, breast milk bats, and postpartum bats.
Claims (4)
の範囲にあるエチレン含有量４０〜６０モル％のエチレ
ン−酢酸ビニル共重合体鹸化物あるいは該重合体を主体
とした重合体からなる平均繊維直径８ミクロン以下のメ
ルトブローン不織布で構成されていることを特徴とする
衛生用品のフェーシング。(1) Intrinsic viscosity [η] is 0.055 to 0.085 l/g
It is composed of a melt-blown nonwoven fabric with an average fiber diameter of 8 microns or less made of a saponified ethylene-vinyl acetate copolymer with an ethylene content of 40 to 60 mol% in the range of Facings are featured sanitary products.
の範囲にあるエチレン含有量４０〜６０モル％のエチレ
ン−酢酸ビニル共重合体鹸化物あるいは該重合体を主体
とした重合体からなる平均繊維直径８ミクロン以下のメ
ルトブローン不織布で構成され、圧縮による透明化また
は半透明化された条部Ａと不透明条部Ｂとが衛生用品の
幅方向に交互に配列された縦縞模様を有していることを
特徴とする衛生用品のフェーシング。(2) Intrinsic viscosity [η] is 0.055 to 0.085 l/g
It is composed of a melt-blown nonwoven fabric with an average fiber diameter of 8 microns or less, made of a saponified ethylene-vinyl acetate copolymer with an ethylene content of 40 to 60 mol% in the range of 40 to 60 mol%, or a polymer mainly composed of this polymer. A facing for a sanitary product, characterized in that it has a vertical striped pattern in which transparent or translucent stripes A and opaque stripes B are alternately arranged in the width direction of the sanitary product.
からなる不織布を表層とし、固有粘度〔η〕が０．０５
５〜０．０８５ｌ／ｇの範囲にあるエチレン含有量４０
〜６０モル％のエチレン−酢酸ビニル共重合体鹸化物あ
るいは該重合体を主体とした重合体からなる平均繊維直
径８ミクロン以下のメルトブローン不織布を下層とした
積層不織布で構成され、該積層不織布は圧縮による透明
化または半透明化された条部Ａと不透明条部Ｂとが衛生
用品の幅方向に交互に配列された縦縞模様を有している
ことを特徴とする衛生用品のフェーシング。(3) The surface layer is a nonwoven fabric made of thermoplastic hydrophobic polymer fibers and thermal binder fibers, and the intrinsic viscosity [η] is 0.05.
Ethylene content ranging from 5 to 0.085 l/g40
It is composed of a laminated nonwoven fabric with a lower layer of meltblown nonwoven fabric with an average fiber diameter of 8 microns or less made of ~60 mol% saponified ethylene-vinyl acetate copolymer or a polymer mainly composed of this polymer, and the laminated nonwoven fabric is compressed. A facing for a sanitary product, characterized in that it has a vertical striped pattern in which transparent or translucent stripes A and opaque stripes B are alternately arranged in the width direction of the sanitary product.
重合体を主体とした重合体が二酸化チタンを０．３〜２
重量％含有したものである請求項１、２または３記載の
衛生用品のフェーシング。(4) Saponified ethylene-vinyl acetate copolymer or a polymer mainly composed of this polymer contains titanium dioxide by 0.3 to 2
The facing for sanitary products according to claim 1, 2 or 3, wherein the facing contains % by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1211007A JP2843371B2 (en) | 1989-08-15 | 1989-08-15 | Facing hygiene products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1211007A JP2843371B2 (en) | 1989-08-15 | 1989-08-15 | Facing hygiene products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0375056A true JPH0375056A (en) | 1991-03-29 |
| JP2843371B2 JP2843371B2 (en) | 1999-01-06 |
Family
ID=16598788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1211007A Expired - Fee Related JP2843371B2 (en) | 1989-08-15 | 1989-08-15 | Facing hygiene products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2843371B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0775572A2 (en) | 1995-11-21 | 1997-05-28 | Chisso Corporation | Laminated non-woven fabric and process for producing the same |
| JP2000507126A (en) * | 1996-03-11 | 2000-06-13 | キンバリー クラーク ゲゼルシャフト ミット ベシュレンクテル ハフツング | Absorbent articles and methods for locally directing and draining fluids |
| JP2003265528A (en) * | 2002-03-15 | 2003-09-24 | Daio Paper Corp | Disposable paper diaper |
| WO2006068541A1 (en) * | 2004-12-20 | 2006-06-29 | Sca Hygiene Products Ab | Absorbent article comprising one or several patterns |
| WO2006068542A1 (en) * | 2004-12-20 | 2006-06-29 | Sca Hygiene Products Ab | Absorbent article comprising one or several visible patterns |
| JP2011143009A (en) * | 2010-01-13 | 2011-07-28 | Kao Corp | Sanitary napkin |
| JP2016524657A (en) * | 2013-05-20 | 2016-08-18 | ザ プロクター アンド ギャンブル カンパニー | Nonwoven web having visually different binding sites and method of making |
-
1989
- 1989-08-15 JP JP1211007A patent/JP2843371B2/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0775572A2 (en) | 1995-11-21 | 1997-05-28 | Chisso Corporation | Laminated non-woven fabric and process for producing the same |
| US5733635A (en) * | 1995-11-21 | 1998-03-31 | Chisso Corporation | Laminated non-woven fabric and process for producing the same |
| JP2000507126A (en) * | 1996-03-11 | 2000-06-13 | キンバリー クラーク ゲゼルシャフト ミット ベシュレンクテル ハフツング | Absorbent articles and methods for locally directing and draining fluids |
| JP2003265528A (en) * | 2002-03-15 | 2003-09-24 | Daio Paper Corp | Disposable paper diaper |
| WO2006068541A1 (en) * | 2004-12-20 | 2006-06-29 | Sca Hygiene Products Ab | Absorbent article comprising one or several patterns |
| WO2006068542A1 (en) * | 2004-12-20 | 2006-06-29 | Sca Hygiene Products Ab | Absorbent article comprising one or several visible patterns |
| US8003846B2 (en) | 2004-12-20 | 2011-08-23 | Sca Hygiene Products Ab | Absorbent article comprising one or several patterns |
| JP2011143009A (en) * | 2010-01-13 | 2011-07-28 | Kao Corp | Sanitary napkin |
| JP2016524657A (en) * | 2013-05-20 | 2016-08-18 | ザ プロクター アンド ギャンブル カンパニー | Nonwoven web having visually different binding sites and method of making |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2843371B2 (en) | 1999-01-06 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |