JPH0255059A - Surface material for absorptive article - Google Patents
Surface material for absorptive articleInfo
- Publication number
- JPH0255059A JPH0255059A JP63206068A JP20606888A JPH0255059A JP H0255059 A JPH0255059 A JP H0255059A JP 63206068 A JP63206068 A JP 63206068A JP 20606888 A JP20606888 A JP 20606888A JP H0255059 A JPH0255059 A JP H0255059A
- Authority
- JP
- Japan
- Prior art keywords
- openings
- liquid
- area
- surface material
- liquid permeability
- 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
- 239000000463 material Substances 0.000 title claims abstract description 36
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 21
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 230000001568 sexual effect Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 60
- 230000035699 permeability Effects 0.000 abstract description 25
- 230000003405 preventing effect Effects 0.000 abstract description 5
- 230000001788 irregular Effects 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 description 17
- 230000002745 absorbent Effects 0.000 description 11
- 239000002250 absorbent Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 239000011148 porous material Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 239000004745 nonwoven fabric Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- -1 polyethylene Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- 239000012463 white pigment Substances 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002175 menstrual effect Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000037307 sensitive skin Effects 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229920001862 ultra low molecular weight polyethylene Polymers 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、−数的に使い捨てオムツ、生理用ナプキン等
の吸収性物品に好適に使用できる表面材に関し、更に詳
細には、生理用ナプキン及びその類似品等の衛生用品に
好適に使用され得る表面材に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a surface material that can be numerically suitably used for absorbent articles such as disposable diapers and sanitary napkins, and more specifically for sanitary napkins. The present invention relates to surface materials that can be suitably used for sanitary products such as and similar products.
人体からの液体を吸収、保持するために用いられる吸収
性物品は、液体透過性の表面材と液体不透過性の防漏材
との間に液体を吸収、保持する吸収体を介在させた構造
を有することは衆知のことである。この吸収性物品にふ
いて、液体透過性の表面材（時折、外包材、被覆材、ト
ップシート、カバーストック等と称されることもある）
は、吸収すべき液体を速やかに吸収体に移行させること
（これを以下、液体透過性と記す）は勿論のこと、吸収
体中に移行した液体を逆戻りさせず人体に乾燥した感覚
を与えること（これを以下、液戻り防止性と記す）、外
観が美しく使用者に不快感を与えないこと、更には風合
いの良好なことなどが要望されている。Absorbent articles used to absorb and retain liquid from the human body have a structure in which an absorbent material that absorbs and retains liquid is interposed between a liquid-permeable surface material and a liquid-impermeable leakage prevention material. It is common knowledge to have. This absorbent article is coated with a liquid-permeable surface material (sometimes referred to as an outer wrapper, covering, topsheet, cover stock, etc.)
Not only does it allow the liquid to be absorbed to quickly transfer to the absorbent body (hereinafter referred to as liquid permeability), but it also prevents the liquid that has migrated into the absorbent body from returning and gives a dry feeling to the human body. (hereinafter referred to as liquid return prevention property), it is desired to have a beautiful appearance and not cause discomfort to the user, and also to have a good texture.
この目的達成のため、様々な提案がなされその改良技術
も数多い。To achieve this objective, various proposals have been made and there are many improved techniques.
具体的には、まず、表面材として疎水性の微細繊維集合
体である不織布を用い、体表面と吸収体との間に疎水雰
囲気の空間を形成することにより、液透過性を損なわず
に液戻り防止性を向上させる技術が挙げられる。しかし
、従来の不織布においては、液戻り防止性は十分である
ものの、液体透過性は繊維の集合体として形成される微
小空間によってのみ付与されているため、液体透過性の
向上には自ずから限界がある。Specifically, first, by using a nonwoven fabric, which is an aggregate of hydrophobic fine fibers, as the surface material and creating a space with a hydrophobic atmosphere between the body surface and the absorbent body, it is possible to absorb liquid without impairing liquid permeability. One example is a technique that improves the ability to prevent return. However, although conventional nonwoven fabrics have sufficient liquid return prevention properties, liquid permeability is only provided by the microscopic spaces formed as aggregates of fibers, so there is a natural limit to improving liquid permeability. be.
そこで、開孔を有する疎水性シートを表面材として用い
ることにより、液体透過性を向上させる技術（特公昭５
７−１７０８１号公報など）が提案されている。ところ
が、このような有孔疎水性シートは、十分な液体透過性
と液戻り防止性を有するものの、開孔の面積が実質的に
均一であり、格子様の不快な外観を呈するため、使用者
の評判は予想に反して非常に低いものであった。Therefore, a technology to improve liquid permeability by using a hydrophobic sheet with holes as a surface material (Japanese Patent Publication No. 5
7-17081, etc.) have been proposed. However, although such perforated hydrophobic sheets have sufficient liquid permeability and liquid return prevention properties, the pores have a substantially uniform area, giving them an unpleasant lattice-like appearance, which may be objectionable to users. Contrary to expectations, its reputation was very low.
これに対して、不規則な開孔を有する疎水性シートを表
面材として用いることにより、外観を改善する技術（特
開昭５５−１４６７３８号公報など）も提案された。確
かに、このような有孔疎水性シートは、開孔の面積が実
質的に均一なものに比べ美しい外観を有するが、肝心の
性能は全く不十分であった。即ち、このような有孔疎水
性シートにおいては、開孔の面積の変動が大きすぎるた
め、過大ないし過小な開孔が必然的に形成される。この
過大な開孔は、液戻り防止性と強度を著しく低下させ、
また、過小な開孔は液体透過性を著しく低下させる。On the other hand, a technique (such as Japanese Patent Laid-Open No. 146738/1983) has been proposed in which the appearance is improved by using a hydrophobic sheet having irregular pores as a surface material. It is true that such perforated hydrophobic sheets have a more beautiful appearance than those in which the area of the pores is substantially uniform, but the essential performance is completely unsatisfactory. That is, in such a perforated hydrophobic sheet, since the variation in the area of the pores is too large, pores that are too large or too small are inevitably formed. This excessive opening significantly reduces the liquid return prevention property and strength.
Furthermore, too small openings significantly reduce liquid permeability.
このように、美しい外観を有し、且つ、液体透過性、液
戻り防止性及び強度に共に優れた表面材がなかったため
、十分な吸収性と快適な使用を有する吸収性物品を得る
ことが出来なかった。As described above, since there has been no surface material that has a beautiful appearance and is excellent in liquid permeability, liquid return prevention property, and strength, it has not been possible to obtain an absorbent article that has sufficient absorbency and is comfortable to use. There wasn't.
本発明者らは、かかる問題点を克服すべく鋭意研究を重
ねた結果、有孔疎水性シートの開孔の面積の変動を適度
に制御することにより美しい外観を有し、且つ、液体透
過性、液戻り防止性及び強度に共に優れた表面材を創造
することに成功し、本発明を完成するに到った。As a result of extensive research to overcome these problems, the inventors of the present invention have found that by appropriately controlling the variation in the area of the pores in a porous hydrophobic sheet, it has a beautiful appearance and liquid permeability. They succeeded in creating a surface material that is excellent in both liquid return prevention properties and strength, and have completed the present invention.
即ち本発明は、開孔を有する疎水性シートからなり、開
孔の面積の平均値が０．０５〜１． ００ｍｍ２であり
、かつ変動係数が０．０５〜０．７０であることを特徴
とする吸収性物品の表面材を提供するものである。That is, the present invention consists of a hydrophobic sheet having openings, and the average value of the area of the openings is 0.05 to 1. 00 mm2 and a coefficient of variation of 0.05 to 0.70.
本発明における開孔の面積とは、開孔を含む平面に対し
て垂直方向から見た面積を意味し、開孔の面積が表面材
の厚さ方向にわたって変化している場合には、その最も
小さな部分の面積とする。In the present invention, the area of an opening means the area viewed from a direction perpendicular to the plane containing the opening, and if the area of the opening changes over the thickness direction of the surface material, the area at the maximum Let it be the area of a small part.
表面材に必要な液体透過性と液戻り防止性を付与するた
め、本発明においては開孔の面積が０、０５〜１．００
ｍｍ”であることを要件とする。０．０５ｍｍ’以下で
は液体透過性が低下し、また、１．００ｍｍ２以上では
液戻り防止性と強度が悪化するので、いずれも好ましく
ない。さらに、開孔の面積が０．１０〜０．５０ｍｍで
あれば、液体透過性と液戻り防止性のバランスがより向
上するので、より好ましい。In order to impart the necessary liquid permeability and liquid return prevention property to the surface material, in the present invention, the area of the openings is 0.05 to 1.00.
mm". If the hole is less than 0.05 mm, the liquid permeability will decrease, and if it is more than 1.00 mm, the liquid return prevention property and strength will deteriorate, so both are not preferable. It is more preferable that the area is 0.10 to 0.50 mm because the balance between liquid permeability and liquid return prevention property is further improved.
一方、変動係数Ｖとは、開孔の面積の標準偏差σｎ−１
と面積の平均値百との比であり、（１）式により定義さ
れる。On the other hand, the coefficient of variation V is the standard deviation of the area of the opening σn-1
It is the ratio of the average area value 100 and is defined by equation (1).
ただし、
この変動係数が０．０５以上であれば、開孔の面積が十
分に不規則となり、良好な外観が付与されるが、０．７
０以上であると過大ないし過小な開孔が現れ、強度が低
下し液体透過性や液戻り防止性が悪化するので、本発明
の意図するところではない。更に、変動係数が０．０７
〜０．４０であれば、強度、液体透過性及び液戻り防止
性のバランスが非常によくとれた表面材で得られるので
好ましく 、０．１５〜０．３２であればより好ましい
。However, if this coefficient of variation is 0.05 or more, the area of the openings will be sufficiently irregular and a good appearance will be imparted, but 0.7
If it is 0 or more, too many or too small openings will appear, the strength will decrease, and liquid permeability and liquid return prevention properties will deteriorate, and this is not the intention of the present invention. Furthermore, the coefficient of variation is 0.07
A value of ~0.40 is preferable, since a surface material with a very good balance of strength, liquid permeability, and liquid return prevention property can be obtained, and a value of 0.15 to 0.32 is more preferable.
開孔はシートのほぼ全面に亘って一様に設けられ、開孔
の密度は一般に５０〜５００個／ｃｍ２が好ましく、よ
り好ましくは７０〜３００個／ｃｍ”である。The openings are uniformly provided over almost the entire surface of the sheet, and the density of the openings is generally preferably 50 to 500 holes/cm2, more preferably 70 to 300 holes/cm''.
本発明に用いる有孔疎水性シートの構成材料は、疎水性
であれば何を用いてもよい。例えば、疎水性の繊維から
なる紙、不織布、織布もしくは編み物、疎水性の樹脂か
らなるフィルムやネットもしくは発泡体などが挙げられ
るが、実生産における加工性を考慮すると、疎水性の繊
維からなる不織布、又は疎水性の樹脂からなるフィルム
もしくはネットが好ましく、液戻り防止性も考慮すると
、疎水性の樹脂からなるフィルムもしくはネットがより
好ましい。この疎水性の樹脂としては、例えば、ポリオ
レフィン、オレフィンと他のビニルモノマー（酢酸ビニ
ル、アクリル酸エチルなど）の共重合樹脂、ポリウレタ
ン、ポリエステル、ナイロン、アセテートといった合成
樹脂及びこれらのブレンドポリマーなどがあげられるが
、柔軟性を考慮するとポリオレフィン、オレフィンと他
モノマーとの共重合樹脂又はこれらのブレンドポリマー
が好ましく、その中でもポリエチレン、もしくはポリエ
チレンと他のビニルモノマーとの共重合体（エチレン−
酢酸ビニル共重合体など）、ないしはそれらのブレンド
物がより好ましい。尚、ポリエチレンには、高密度、中
密度、低密度、直鎖状低密度、超低密度などといった様
々なタイプが知られているが、この中でも柔軟性の面で
は、低密度、直鎖状低密度、超低密度タイプが好ましく
、特に高度な柔軟性が重視される場合には超低密度タイ
プがより好ましい。Any material may be used for the perforated hydrophobic sheet used in the present invention as long as it is hydrophobic. Examples include paper, nonwoven fabric, woven fabric, or knitted fabric made of hydrophobic fibers, and films, nets, or foams made of hydrophobic resin. A nonwoven fabric or a film or net made of a hydrophobic resin is preferable, and a film or net made of a hydrophobic resin is more preferable in consideration of liquid return prevention properties. Examples of this hydrophobic resin include polyolefins, copolymer resins of olefins and other vinyl monomers (vinyl acetate, ethyl acrylate, etc.), synthetic resins such as polyurethane, polyester, nylon, acetate, and blend polymers thereof. However, in consideration of flexibility, polyolefins, copolymers of olefins and other monomers, or blended polymers thereof are preferred, and among these, polyethylene or copolymers of polyethylene and other vinyl monomers (ethylene-
vinyl acetate copolymers, etc.) or blends thereof are more preferred. Various types of polyethylene are known, such as high density, medium density, low density, linear low density, and ultra-low density, but among these, low density, linear Low-density and ultra-low-density types are preferred, and especially when a high degree of flexibility is important, the ultra-low-density type is more preferred.
また、吸収体に拡散した液体の色を遮断する効果（これ
を以下遮蔽性と記す）も考慮すると、不透明であること
が好ましい。表面材が不透明であれば、経血のような着
色した液体を吸収する吸収性物品の表面材として好まし
く使用できる。この表面材の不透明度は、一般に白色度
として数値化されるが、その白色度は２０以上であるこ
とが好ましく、３０以上であればより好ましい。尚、不
透明度を付与するための方法としては様々なものが考え
られる。例えば、二酸化チタンなどの白色顔料を有孔疎
水性シートの構成材料に添加する方法、有孔疎水性シー
トの表面に白色顔料を適当なバインダーと混合して塗布
する方法などが挙げられるが、目的とする不透明度を付
与できれば、これらの方法に限らずどんな方法を用いて
もよい。Furthermore, in consideration of the effect of blocking the color of the liquid diffused in the absorber (hereinafter referred to as shielding property), it is preferable that the absorbent material be opaque. If the surface material is opaque, it can be preferably used as a surface material for absorbent articles that absorb colored liquids such as menstrual blood. The opacity of this surface material is generally quantified as whiteness, and the whiteness is preferably 20 or more, more preferably 30 or more. Note that various methods can be considered for imparting opacity. Examples include a method of adding a white pigment such as titanium dioxide to the constituent materials of the porous hydrophobic sheet, and a method of coating the surface of the porous hydrophobic sheet with a white pigment mixed with an appropriate binder. Any method other than these methods may be used as long as it can provide the desired opacity.
更に、液体透過性を改善するための手段として、界面活
性剤の塗布、プラズマ照射などの物理的処理又は鉱酸処
理などの化学的処理などにより、有孔疎水性シートの表
面を親水化処理することも可能であるし、液戻り防止性
を改善するため、シリコン系やフッソ系の薬剤の塗布な
どにより、表面を抱水化処理することも可能である。Furthermore, as a means to improve liquid permeability, the surface of the porous hydrophobic sheet is made hydrophilic by applying a surfactant, physical treatment such as plasma irradiation, or chemical treatment such as mineral acid treatment. In addition, in order to improve the property of preventing liquid return, it is also possible to treat the surface with water hydration by applying a silicone-based or fluorine-based chemical.
また、風合いの改善などの必要に応じて、カレンダー処
理や微細なパターンのエンボス処理を施すことも可能で
あるし、液体透過性を改善するため、裏面に親水性の繊
維層を一体化することも可能である。In addition, it is possible to perform calendering or fine pattern embossing to improve texture, and to improve liquid permeability, a hydrophilic fiber layer can be integrated on the back side. is also possible.
尚、本発明の表面材は詳述した例に限定されることなく
、上記に規定した範囲において種々の改変をなし得るも
のである。Incidentally, the surface material of the present invention is not limited to the detailed examples, but can be variously modified within the range specified above.
以下、本発明がいかに有用であるかを具体的に例を挙げ
て説明するが、本発明はこれらの実施例に限定されるも
のではない。Hereinafter, how useful the present invention is will be explained with specific examples, but the present invention is not limited to these examples.
第１表に示す種々の表面材を作製し、それらの物性及び
吸収性能を以下の方法で評価した。Various surface materials shown in Table 1 were prepared, and their physical properties and absorption performance were evaluated by the following methods.
結果を第１表に示す。The results are shown in Table 1.
（１）物 性：
ｉ）開孔の面積及び変動係数：
表面材を吸収性物品に構成する際に吸液部分となる部分
の４０Ｘ２０ｍｍ （タテ×ヨコ）における無作為に選
んだ２０個の開孔について測定を行った。(1) Physical properties: i) Opening area and coefficient of variation: 20 randomly selected openings in the area of 40 x 20 mm (vertical x horizontal) that will become the liquid absorbing part when forming the surface material into an absorbent article. Measurements were made on the holes.
電子顕微鏡を用いて開孔面をその垂直方向から見た拡大
写真を撮影し、写真上での開孔の面積Ｓを測定し、（２
）式によって実際の開孔の面積Ｓを算出し、更に（１）
式により変動係数Ｖを計算した。An enlarged photograph of the aperture surface viewed from the vertical direction was taken using an electron microscope, the area S of the aperture on the photograph was measured, and (2
) Calculate the actual aperture area S using the equation (1)
The coefficient of variation V was calculated using the formula.
ｓ （ｍｍ２） ＝ Ｓ （ｍｍ２） ／ ｘ ２−（
２）ただし、
Ｘ：実物に対する写真の倍率
ｉｉ）強 度：
表面材を短冊状に裁断し、これを試験片として、引張試
験機を用いて試験片を破壊するのに要する荷重を測定し
、これを強度とした。一般に、この値は１０００ ｇ以
上であることが好ましく、２０００ｇ以上であれば理想
的である。s (mm2) = S (mm2) / x 2-(
2) Where, This was defined as strength. Generally, this value is preferably 1000 g or more, ideally 2000 g or more.
（２）吸収性能：
評価に際しては、市販の生理用ナプキン「ロリエ」 （
花王■製）の表面材を取り除き、代わりに各表面材を入
れて構成し、これをナプキン想定サンプルとして評価し
た。(2) Absorption performance: For evaluation, commercially available sanitary napkins “Laurier” (
The surface material (manufactured by Kao ■) was removed and each surface material was inserted in its place, and this was evaluated as a hypothetical napkin sample.
■ 吸収時間及び液戻り量：
所定量の試験液をナプキン想定サンプルに加圧下で注入
し、吸収されるに要した時間を吸収時間とした。一般に
、この吸収時間が小さい程、表面材の液体透過性が優れ
ていることを示し、５０秒以下であることが好ましく、
２０秒以下であれば理想的である。■ Absorption time and liquid return amount: A predetermined amount of the test liquid was injected into a hypothetical napkin sample under pressure, and the time required for it to be absorbed was defined as the absorption time. Generally, the shorter the absorption time, the better the liquid permeability of the surface material, and it is preferably 50 seconds or less.
Ideally, the time is 20 seconds or less.
そして更に、一定時間後に加圧し、内部より表面材を通
って戻ってくる試験液の量を測定し、液戻り量とした。Further, after a certain period of time, pressure was applied, and the amount of test liquid that returned from the inside through the surface material was measured, and this was determined as the amount of liquid returned.
この液戻り量が小さい程、表面でのべたつきが少なく、
使用感が良好であることを示し、２．００ ｇ以下であ
ることが好ましく、１．００ｇ以下であれば理想的であ
る。The smaller the amount of liquid returned, the less sticky it will be on the surface.
It indicates a good feel in use, and is preferably 2.00 g or less, ideally 1.00 g or less.
■外観：
ナプキン想定サンプルを成人女子１０人に見せ、その視
覚的印象を尋ねた結果に基づいて、以下の３つにランク
分けした。■Appearance: Samples of napkins were shown to 10 adult women, and based on the results of their visual impressions, they were ranked into the following three categories.
３級：美しいと答えた者が８Å以上で あった。Grade 3: Those who answered that it was beautiful were 8 Å or more. there were.
２級：美しいと答えた者が３〜７人で あった。Grade 2: 3 to 7 people answered that it was beautiful. there were.
１級：美しいと答えた者が２Å以下で あった。Grade 1: Those who answered that it was beautiful were less than 2Å there were.
■柔軟性：
ナプキン想定サンプルの肌に接すべき
面を、手の平で軽く撫でた時の感触を以下の４つにラン
ク分けした。■Flexibility: The feel when lightly stroking the surface of the napkin sample with the palm of the hand that should be in contact with the skin was ranked into the following four categories.
４級：非常に軟らかい。Grade 4: Very soft.
３級二十分に軟らかい。Soft enough for grade 3.
２級：やや硬い。Grade 2: Slightly hard.
１級：硬い。Grade 1: Hard.
実施例１〜１１に示されるように、本発明の表面材は強
度、外観、液体透過性、液戻り防止性の全てに優れてい
る。特に、実施例１〜９に示したものは、液戻り量がい
ずれも１．５ｇ以下であり非常に優れており、更に実施
例２．６．９及び１０は、強度、外観、液体透過性、液
戻り防止性の全てにふいて理想的な値を有し、画期的な
表面材と言え、この中でも超低密度ポリエチレンのネッ
トを用いた実施例９は、非常に高度な柔軟性を有するた
め、肌が極度に敏感な使用者にも全く不快感を与えるこ
とがない表面材が得られた。As shown in Examples 1 to 11, the surface material of the present invention is excellent in all of strength, appearance, liquid permeability, and liquid return prevention property. In particular, Examples 1 to 9 have very good liquid return amounts of 1.5 g or less, and Examples 2, 6, 9, and 10 have excellent strength, appearance, and liquid permeability. It has ideal values in all aspects of liquid return prevention properties, and can be said to be an innovative surface material. Among these, Example 9, which uses an ultra-low density polyethylene net, has an extremely high degree of flexibility. As a result, a surface material that does not cause any discomfort even to users with extremely sensitive skin was obtained.
これに対して、比較例１においては、開孔の面積が０．
０５ｍｍ２以下であるため液体透過性が悪く、また、比
較例２においては、開孔の面積が１、 ００ｍｍ２以上
であるため液戻り防止性が悪い。On the other hand, in Comparative Example 1, the area of the opening was 0.
Since the opening area is 0.05 mm2 or less, the liquid permeability is poor, and in Comparative Example 2, the opening area is 1.00 mm2 or more, so the liquid return prevention property is poor.
そして、比較例３は、変動係数が０．０５以下であるた
め外観が劣悪であり、また、比較例４は、変動係数が０
，７０以上であるため強度、液体透過性及び液戻り防止
性が劣悪である。従って、比較例として示したものは、
全て表面材としては甚だ不十分なものであると言わざる
を得ない。In Comparative Example 3, the coefficient of variation is 0.05 or less, so the appearance is poor, and in Comparative Example 4, the coefficient of variation is 0.05.
, 70 or more, the strength, liquid permeability, and liquid return prevention properties are poor. Therefore, what is shown as a comparative example is
It must be said that all of these materials are extremely inadequate as surface materials.
Claims (1)
平均値が０．０５〜１．００ｍｍ＾２であり、かつ変動
係数が０．０５〜０．７０であることを特徴とする吸収
性物品の表面材。1. An absorption sheet made of a hydrophobic sheet with openings, characterized in that the average value of the area of the openings is 0.05 to 1.00 mm^2, and the coefficient of variation is 0.05 to 0.70. Surface material for sexual articles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63206068A JP2804270B2 (en) | 1988-08-19 | 1988-08-19 | Surface material for absorbent articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63206068A JP2804270B2 (en) | 1988-08-19 | 1988-08-19 | Surface material for absorbent articles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0255059A true JPH0255059A (en) | 1990-02-23 |
| JP2804270B2 JP2804270B2 (en) | 1998-09-24 |
Family
ID=16517307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63206068A Expired - Fee Related JP2804270B2 (en) | 1988-08-19 | 1988-08-19 | Surface material for absorbent articles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2804270B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07501721A (en) * | 1991-09-28 | 1995-02-23 | ダンロップ・リミテッド | golf club head |
| JP2016011471A (en) * | 2014-06-27 | 2016-01-21 | 花王株式会社 | Fiber product treatment agent composition |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55146738A (en) * | 1979-03-05 | 1980-11-15 | Procter & Gamble | Flexible plastic web showing fibrous characteristic and its preparation and device |
| JPS62197327U (en) * | 1986-06-06 | 1987-12-15 |
-
1988
- 1988-08-19 JP JP63206068A patent/JP2804270B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55146738A (en) * | 1979-03-05 | 1980-11-15 | Procter & Gamble | Flexible plastic web showing fibrous characteristic and its preparation and device |
| JPS62197327U (en) * | 1986-06-06 | 1987-12-15 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07501721A (en) * | 1991-09-28 | 1995-02-23 | ダンロップ・リミテッド | golf club head |
| JP2016011471A (en) * | 2014-06-27 | 2016-01-21 | 花王株式会社 | Fiber product treatment agent composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2804270B2 (en) | 1998-09-24 |
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