JP5883573B2 - Non-woven fabric for support that prevents drug from oozing out - Google Patents
Non-woven fabric for support that prevents drug from oozing out Download PDFInfo
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本発明は、医療用貼付剤の基材に用いられ、薬剤の染み出し防止に優れた効果を示す支持体用不織布に関する。 The present invention relates to a non-woven fabric for a support, which is used as a base material for a medical patch and exhibits an excellent effect in preventing a drug from exuding.
従来から、医療用貼付剤の基材として不織布を使用すると、各種の貼付剤、膏体などが水分を含有するため、これらの薬剤を塗工したり、薬剤を含む貼付剤を放置すると、薬剤が不織布の裏面まで染みだす場合があった。そのため、例えば、使用前に複数枚の貼付剤が重なった状態で貼りついたり、薬剤が衣類に付着するなどの問題があった。これらに対処するため、様々な不織布が製造されてきた。例えば、不織布自身の厚みと不織布に付与した撥水性を利用し、薬剤の染みだしを防止するものとして、撥水性短繊維と捲縮性複合繊維とを混綿して形成された伸縮性不織布がある（特許文献１）。また、捲縮性繊維からなる伸縮性不織布を、撥水剤を含む処理液に含浸させて撥水処理させた伸縮性不織布や（特許文献２）、撥水剤を用いて撥水加工された捲縮繊維を主体とする伸縮性不織布なども開発されている（特許文献３）。 Conventionally, when a non-woven fabric is used as a base material for a medical patch, various patches, plasters, etc. contain water. Therefore, if these drugs are applied or a patch containing the drug is left untreated, Sometimes oozes out to the back of the nonwoven fabric. Therefore, for example, there were problems such as sticking in a state where a plurality of patches overlapped before use, and the drug adhered to clothing. Various non-woven fabrics have been manufactured to address these. For example, there is a stretchable nonwoven fabric formed by blending water-repellent short fibers and crimped composite fibers as a means of preventing drug seepage by utilizing the thickness of the nonwoven fabric itself and the water repellency imparted to the nonwoven fabric. (Patent Document 1). In addition, a stretchable nonwoven fabric made by impregnating a stretchable nonwoven fabric made of crimpable fibers into a treatment liquid containing a water repellent and subjected to water repellent treatment (Patent Document 2), and water repellent processed using a water repellent An elastic nonwoven fabric mainly composed of crimped fibers has also been developed (Patent Document 3).
その他、粘着性膏体層中に含有される薬物の不織布への染み込みを防止するために、不織布の単繊維同士を熱融着させ、熱融着層を設けた貼付剤や（特許文献４）、特定のブロック重合体、ポリオレフィン及び軟化剤を特定の割合で含有するエラストマー組成物を不織布に被覆することにより、薬効成分や水分などの染みだしを防止する方法なども知られている（特許文献５）。 In addition, in order to prevent the drug contained in the adhesive plaster layer from penetrating into the nonwoven fabric, a patch in which the single fibers of the nonwoven fabric are thermally fused to each other and a thermal fusion layer is provided (Patent Document 4) Also known is a method for preventing exudation of medicinal components and moisture by coating a nonwoven fabric with an elastomer composition containing a specific block polymer, polyolefin and softener in a specific ratio (Patent Literature) 5).
しかしながら、近年では、薬剤中における水分量が増加しており、また薬剤の粘度の低下や、薬剤を支持体に塗工する際の塗工速度の高速化による支持体の加工張力や塗工圧の増加によって、薬剤は容易に染みだしやすくなっており、貼付剤の支持体には従来に増して、染みだし防止性能が要求されている。 However, in recent years, the amount of water in the drug has increased, and the processing tension and coating pressure of the support have been reduced by decreasing the viscosity of the drug and increasing the coating speed when the drug is applied to the support. With this increase, the drug easily oozes out, and the support for the patch is required to have a bleed-out preventing performance as compared with the conventional one.
水分を多く含有する薬剤を高速で塗工したり、貼付剤を長期間保存しても、薬剤が染みだしにくい支持体用不織布を提供する。 Provided is a non-woven fabric for a support which is difficult to ooze a drug even when a drug containing a lot of water is applied at high speed or a patch is stored for a long period of time.
薬剤が染みだしにくい支持体用不織布をうる方法としては、薬剤が浸透しないよう不織布を厚くする方法と、不織布を圧密し、薬剤が裏面まで染みだす際に通る空隙を圧縮して不織布の密度を上げる方法が一般的である。しかし、前者の方法では、不織布が厚く１箱に納入できる枚数が限られるため、保管スペースや運送コストが嵩むため好ましくない。一方、後者の方法では、支持体用不織布の通気性が極度に低下し、実際に肌に貼付するとムレなどの不快感が発生するため好ましくない。従って、この二つの方策のバランスを取りながら、新規の方策を講じることが肝要である。 There are two methods for obtaining a nonwoven fabric for support that is difficult for the drug to bleed out: a method of thickening the non-woven fabric so that the drug does not penetrate; The method of raising is common. However, the former method is not preferable because the nonwoven fabric is thick and the number of sheets that can be delivered to one box is limited, which increases storage space and transportation costs. On the other hand, the latter method is not preferable because the breathability of the nonwoven fabric for support is extremely lowered, and when it is actually applied to the skin, discomfort such as stuffiness occurs. Therefore, it is important to take new measures while balancing these two measures.
本発明者は、前記課題を解決するために鋭意研究を重ねた結果、薬剤が馴染みやすく浸透しやすい親水性繊維層と、薬剤が浸透し難い撥水性繊維層からなる積層不織布を、撥水性繊維層の面からニードルパンチ加工やウォーターパンチ加工などの機械的交絡法により親水性繊維と撥水性繊維を絡合させることで、医療用貼付剤の基材として使用可能な支持体用不織布を完成するに至った。 As a result of intensive studies to solve the above problems, the present inventor has obtained a laminated non-woven fabric comprising a hydrophilic fiber layer in which a drug is easy to be familiar and easy to penetrate and a water-repellent fiber layer in which the drug is difficult to penetrate. The support nonwoven fabric that can be used as a base material for medical patches is completed by entanglement of hydrophilic fibers and water-repellent fibers by mechanical entanglement methods such as needle punching and water punching from the surface of the layer. It came to.
すなわち、本発明に係る支持体用不織布は、親水性繊維層と撥水性繊維層との積層体が、撥水性繊維層の面から機械的交絡法により絡合されることを特徴としている。前記親水性繊維層はニードルパンチ法により目付１００ｇ／ｍ2の繊維層を形成した時に、ＪＩＳ Ｌ １９０７滴下法にて計測される水滴の吸収時間が１０秒以下となる繊維で形成されており、前記撥水性繊維層はＪＩＳ Ｌ １０９２ ６．２スプレー法にて得られる評価がレベル３以上となる繊維で形成されていることが好ましい。前記機械的交絡法とは、例えば、ニードルパンチ加工またはウォーターパンチ加工であることが好ましい。特にニードルパンチ加工において絡合に使用される針は、針番手３６〜４２番であることが好ましく、また、前記親水性繊維層の目付は２０〜１５０ｇ／ｍ2であり、前記撥水性繊維層の目付は２０〜１５０ｇ／ｍ2であることが好ましい。 That is, the nonwoven fabric for a support according to the present invention is characterized in that a laminate of a hydrophilic fiber layer and a water-repellent fiber layer is entangled from the surface of the water-repellent fiber layer by a mechanical entanglement method. The hydrophilic fiber layer is formed of fibers having a water droplet absorption time of 10 seconds or less measured by a JIS L 1907 dropping method when a fiber layer having a basis weight of 100 g / m 2 is formed by a needle punch method. The water-repellent fiber layer is preferably formed of fibers having an evaluation level of 3 or higher obtained by JIS L 1092 6.2 spray method. The mechanical entanglement method is preferably, for example, needle punching or water punching. In particular, needles used for entanglement in needle punching are preferably needle numbers 36 to 42, and the basis weight of the hydrophilic fiber layer is 20 to 150 g / m 2. Is preferably 20 to 150 g / m 2 .
本発明の支持体用不織布によれば、薬剤を高速で親水性繊維層面に塗工したり、貼付剤を長時間積み重ねた状態で放置しても、薬剤が撥水性繊維層面から染みだすことがなく、また染みだした薬剤で衣服などを汚すこともない。さらに、本発明の不織布はバインダーなどの加工剤を含有しないため、医療用として安全に使用することが可能である。また繊維層を絡合させることで、不織布の風合いを柔らかく仕上げることが可能となり、貼付剤を皮膚に直接貼付しても不快感が少ない。 According to the non-woven fabric for a support of the present invention, even if the drug is applied to the hydrophilic fiber layer surface at a high speed or the patches are left in a state of being stacked for a long time, the drug may ooze out from the water-repellent fiber layer surface. There is also no stains on clothes etc. Furthermore, since the nonwoven fabric of the present invention does not contain a processing agent such as a binder, it can be safely used for medical purposes. Further, by entanglement of the fiber layers, it is possible to finish the texture of the nonwoven fabric softly, and there is little discomfort even if the patch is directly applied to the skin.
本発明は、例えば、貼付剤や薬剤の塗布基材（支持体）として有用な不織布に関する。本発明の支持体用不織布は、親水性繊維層と撥水性繊維層からなる積層体が、撥水性繊維層の面から機械的交絡法により絡合されて接合されている点に特徴がある。親水性繊維層を設けることにより、薬剤を含浸させやすくなるとともに、撥水性繊維層面から各繊維層を機械的に絡合させることで、薬剤の染み出しを防ぐことが可能である。 The present invention relates to a nonwoven fabric useful as, for example, a base material (support) for a patch or drug. The nonwoven fabric for a support of the present invention is characterized in that a laminate comprising a hydrophilic fiber layer and a water-repellent fiber layer is entangled and joined from the surface of the water-repellent fiber layer by a mechanical entanglement method. By providing the hydrophilic fiber layer, it becomes easy to impregnate the drug, and it is possible to prevent the drug from exuding by mechanically intertwining each fiber layer from the surface of the water-repellent fiber layer.
本願発明の親水性繊維層は、ニードルパンチ法により目付１００ｇ／ｍ2の繊維層を形成した時に、ＪＩＳ Ｌ １９０７滴下法にて計測される水滴の吸収時間が、例えば１０秒以下、好ましくは７秒以下、より好ましくは５秒以下となる親水性繊維で形成されている。吸収時間が１０秒より長くなると、薬剤が親水性繊維層に吸収され難くなるため好ましくない。 In the hydrophilic fiber layer of the present invention, when a fiber layer having a basis weight of 100 g / m 2 is formed by the needle punch method, the water droplet absorption time measured by the JIS L 1907 dropping method is, for example, 10 seconds or less, preferably 7 It is formed of a hydrophilic fiber that is 2 seconds or less, more preferably 5 seconds or less. When the absorption time is longer than 10 seconds, it is not preferable because the drug is hardly absorbed by the hydrophilic fiber layer.
前記親水性繊維層を構成する繊維としては、例えばレーヨン繊維などのセルロース系化学繊維、綿などの天然繊維、及び親水処理（親水加工）された合成繊維（例えば、ポリエステル繊維、ナイロン繊維、ポリオレフィン系繊維）などが有用に用いられる。前記合成繊維は、例えば、親水剤によって親水処理（親水加工）することにより、あるいはポリエチレングリコールなどの親水成分と共重合することにより親水化されている。これらの中で特にレーヨン繊維、親水加工されたあるいはポリエチレングリコールなどの親水成分と共重合したポリエステル繊維が本願発明には好適である。 Examples of fibers constituting the hydrophilic fiber layer include cellulosic chemical fibers such as rayon fibers, natural fibers such as cotton, and synthetic fibers subjected to hydrophilic treatment (hydrophilic processing) (for example, polyester fibers, nylon fibers, and polyolefin fibers). Fiber) and the like are usefully used. The synthetic fiber is hydrophilized, for example, by hydrophilic treatment (hydrophilic processing) with a hydrophilic agent or by copolymerizing with a hydrophilic component such as polyethylene glycol. Among these, rayon fibers, polyester fibers that are hydrophilically processed or copolymerized with a hydrophilic component such as polyethylene glycol are particularly suitable for the present invention.
前記親水性繊維層は、上記に例示される繊維を複数混綿して形成してもよい。一般に、前記セルロース系化学繊維や天然繊維は、水分の吸収速度は遅いものの保水性に優れている。その一方、前記親水処理された合成繊維は、水分の吸収速度は速いものの保水性に劣る。そこで、セルロース系化学繊維や天然繊維と、親水処理された合成繊維を用いて親水性繊維層を形成する際は、吸収速度と保水性のバランスを考慮し、レーヨン繊維と親水処理されたポリエステル繊維の混率は、例えば２０／８０〜８０／２０、好ましくは３０／７０〜７０／３０となるように混綿し、最適化を図るとよい。 The hydrophilic fiber layer may be formed by blending a plurality of the fibers exemplified above. In general, the cellulosic chemical fibers and natural fibers are excellent in water retention although they have a low moisture absorption rate. On the other hand, although the hydrophilic synthetic fiber has a high moisture absorption rate, it is inferior in water retention. Therefore, when forming a hydrophilic fiber layer using cellulosic chemical fibers or natural fibers and hydrophilic synthetic fibers, considering the balance between absorption rate and water retention, rayon fibers and hydrophilic polyester fibers The blending ratio of 20/80 to 80/20, for example, preferably 30/70 to 70/30 may be mixed and optimized.
本願発明の撥水性繊維層は、ニードルパンチ法により目付１００ｇ／ｍ2の繊維層を形成した時に、ＪＩＳ Ｌ １０９２ ６．２スプレー法にて得られる評価が、例えばレベル３以上、好ましくはレベル４以上となる撥水性繊維で形成されている。評価がレベル２以下の撥水性繊維層では、撥水効果が十分に発揮されないため、薬剤が染みだしやすくなり、好ましくない。 The water-repellent fiber layer of the present invention has an evaluation obtained by the JIS L 1092 6.2 spray method when a fiber layer having a basis weight of 100 g / m 2 is formed by the needle punch method, for example, level 3 or higher, preferably level 4 It is formed with the water repellent fiber which becomes the above. A water-repellent fiber layer having an evaluation of level 2 or less is not preferable because the water-repellent effect is not sufficiently exerted, so that the drug easily oozes out.
前記撥水性繊維層を構成する繊維としては、例えばシリコーン繊維、ポリテトラフルオロエチレン繊維、及び撥水処理（撥水加工）された合成繊維（例えば、ポリエステル繊維、ナイロン繊維、ポリオレフィン系繊維）などが有用に用いられる。前記撥水処理には、例えば、フッ素系撥水剤（例えば、パーフルオロヘキサンの共重合体など）、シリコーン系撥水剤（例えば、撥水性シリコーンなど）、ワックス系撥水剤など撥水剤が使用可能である。これらの中で特にポリテトラフルオロエチレン繊維、撥水加工されたポリエステル繊維が本願発明には好適である。 Examples of the fibers constituting the water-repellent fiber layer include silicone fibers, polytetrafluoroethylene fibers, and water-repellent-treated (water-repellent processed) synthetic fibers (for example, polyester fibers, nylon fibers, and polyolefin fibers). Useful. For the water repellent treatment, for example, a water repellent such as a fluorine water repellent (for example, a perfluorohexane copolymer), a silicone water repellent (for example, a water repellent silicone), a wax water repellent or the like. Can be used. Of these, polytetrafluoroethylene fibers and water-repellent polyester fibers are particularly suitable for the present invention.
撥水性繊維層を形成する際は、各種薬剤の浸透防止の目的、及び製品価格を抑える目的でシリコーン繊維を混綿するのが常法である。シリコーン繊維の混率は、例えば２０重量％未満である。シリコーン繊維はフッ素系の繊維に比べて撥水性が劣るので、混率が２０重量％より高くなると、撥水効果が十分に発揮されず、染みだしが発生しやすくなるため好ましくない。 When forming the water-repellent fiber layer, it is a common practice to blend silicone fibers for the purpose of preventing the penetration of various drugs and for the purpose of reducing the product price. The mixing ratio of silicone fibers is, for example, less than 20% by weight. Silicone fibers are inferior in water repellency compared to fluorine-based fibers. Therefore, if the mixing ratio is higher than 20% by weight, the water-repellent effect is not sufficiently exhibited and bleeding is likely to occur.
本発明の支持体用不織布を、体に直接貼付する医療用用具の支持体として用いる場合には、親水性繊維及び撥水性繊維の両方、もしくは親水性繊維又は撥水性繊維のいずれか一方に捲縮性複合繊維を用いることが好ましい。捲縮性の繊維を使用することで、支持体用不織布の自由な伸縮変型が可能となるため、患部に製品を貼付しやすくなる。また貼付後も、体の動きと一体となって支持体が変型するため、長時間に亘って、塗工された薬剤が患部に接触できるため好ましい。 When the support nonwoven fabric of the present invention is used as a support for a medical device that is directly attached to the body, both hydrophilic fibers and water-repellent fibers, or either hydrophilic fibers or water-repellent fibers are used. It is preferable to use a compressible conjugate fiber. By using the crimpable fiber, the nonwoven fabric for support can be freely stretched and deformed, so that the product can be easily applied to the affected area. In addition, since the support is deformed integrally with the movement of the body even after application, it is preferable because the coated medicine can contact the affected area for a long time.
また、使用できる親水性繊維及び撥水性繊維の繊維径（繊度）に、特に制限はない。しかし可能であれば、例えば繊維径は１〜１０デシテックスであり、好ましくは１．６〜７デシテックスである。 Moreover, there is no restriction | limiting in particular in the fiber diameter (fineness) of the hydrophilic fiber and water-repellent fiber which can be used. However, if possible, for example, the fiber diameter is 1 to 10 dtex, preferably 1.6 to 7 dtex.
同様に、使用できる親水性繊維及び撥水性繊維の繊維長にも制限はない。しかし可能であれば、例えば繊維長は２０〜８０ｍｍであり、好ましくは３０〜７０ｍｍであり、より好ましくは４０〜６０ｍｍである。 Similarly, there are no restrictions on the fiber length of the hydrophilic fiber and the water-repellent fiber that can be used. However, if possible, for example, the fiber length is 20 to 80 mm, preferably 30 to 70 mm, and more preferably 40 to 60 mm.
親水性繊維層の目付は、例えば２０〜１５０ｇ／ｍ2であり、好ましくは４０〜１００ｇ／ｍ2である。また、撥水性繊維層の目付は、例えば２０〜１５０ｇ／ｍ2であり、好ましくは４０〜１００ｇ／ｍ2である。親水性繊維層並びに撥水性繊維層の目付が少ないと必然的に不織布も薄くなり、薬剤の染みだしが発生しやすくなり好ましくない。また、目付が多いと、不織布が厚くなり、包装箱に入る貼付剤の枚数が減少するため好ましくない。 The basis weight of the hydrophilic fiber layer is, for example, 20 to 150 g / m 2 , and preferably 40 to 100 g / m 2 . The basis weight of the water repellent fiber layer is, for example, 20 to 150 g / m 2 , and preferably 40 to 100 g / m 2 . If the basis weight of the hydrophilic fiber layer and the water-repellent fiber layer is small, the nonwoven fabric is inevitably thinned, which is not preferable because the drug oozes out easily. Moreover, when there are many fabric weights, since a nonwoven fabric becomes thick and the number of patches which enter a packaging box reduces, it is unpreferable.
更に、親水性繊維層／撥水性繊維層の重量比率は、例えば２０／８０〜８０／２０であり、好ましくは３０／７０〜６０／４０である。前記親水性繊維層の重量比率が８０重量％より大きくなると、親水性繊維が過剰となって塗工された薬剤が、支持体用不織布に浸透し、裏側にまで染みだすため好ましくない。また、前記撥水性繊維層の重量比率が８０重量％より大きくなると、塗工された薬剤が十分に浸透し難くなるため好ましくない。 Furthermore, the weight ratio of hydrophilic fiber layer / water-repellent fiber layer is, for example, 20/80 to 80/20, and preferably 30/70 to 60/40. When the weight ratio of the hydrophilic fiber layer is more than 80% by weight, it is not preferable because the agent coated with excess hydrophilic fibers penetrates into the nonwoven fabric for support and oozes out to the back side. Moreover, when the weight ratio of the water-repellent fiber layer is larger than 80% by weight, it is not preferable because the coated drug is not easily penetrated.
支持体用不織布の厚みは、例えば０．５〜２．０ｍｍであり、好ましくは０．７〜１．８ｍｍであり、より好ましくは０．９〜１．６ｍｍである。不織布の厚みが０．５ｍｍ未満では、不織布が薄いため薬剤が染みだしやすくなるため好ましくない。また、不織布が２．０ｍｍより厚くなると、貼付剤が患部に沿い難く、また不織布が厚くなると包装箱に入る貼付剤の枚数が減少するため好ましくない。 The thickness of the nonwoven fabric for support body is 0.5-2.0 mm, for example, Preferably it is 0.7-1.8 mm, More preferably, it is 0.9-1.6 mm. If the thickness of the non-woven fabric is less than 0.5 mm, the non-woven fabric is thin. Moreover, when the nonwoven fabric is thicker than 2.0 mm, it is difficult for the patch to follow the affected area, and when the nonwoven fabric is thick, the number of patches entering the packaging box decreases, which is not preferable.
支持体用不織布の目付は、例えば４０〜３００ｇ／ｍ2であり、好ましくは６０〜２５０ｇ／ｍ2であり、より好ましくは８０〜２００ｇ／ｍ2である。目付が４０ｇ／ｍ2未満では支持体としての強度を保持することが困難となるため好ましくなく、また３００ｇ／ｍ2より多いと、不織布が厚くなり、包装箱に入る貼付剤の枚数が減少するため好ましくない。 Basis weight of the support-body nonwoven, for example, 40~300g / m 2, preferably 60~250g / m 2, more preferably from 80 to 200 g / m 2. If the basis weight is less than 40 g / m 2 , it is difficult to maintain the strength as a support, and it is not preferable. If it exceeds 300 g / m 2 , the nonwoven fabric becomes thick and the number of patches in the packaging box decreases. Therefore, it is not preferable.
本発明の支持体用不織布は、まず親水性繊維層、撥水性繊維層を製造するそれぞれの系列で繊維を計量し、計量された繊維を混綿した後、カード機を用いて形成された中間ウェブをラッピングして各層を形成し、前記各層を機械的交絡法の打ち込み側に撥水性繊維層がくるようにオンライン上で積み重ね、繊維層を絡合することにより製造される。 The nonwoven fabric for support of the present invention is an intermediate web formed by first measuring the fibers in each series for producing a hydrophilic fiber layer and a water-repellent fiber layer, blending the measured fibers, and then using a card machine. Each layer is formed by wrapping on-line so that the water-repellent fiber layer is on the driving side of the mechanical entanglement method, and the fiber layers are entangled.
積層体を絡合させる際に、撥水性繊維層面から圧力をかけて、針もしくは水流を貫通させることにより繊維を絡合させると、２層が一体化するのみでなく、撥水性繊維が部分的に親水性繊維層側に入り込むことにより薬剤の染みだし防止効果が向上するため好ましい。逆に親水性繊維層面から機械的に絡合させると撥水性繊維層に入った親水性繊維が、薬剤が染みだす通路となるため好ましくない。 When the laminate is entangled, pressure is applied from the surface of the water-repellent fiber layer and the fibers are entangled by penetrating a needle or a water flow, not only the two layers are integrated but also the water-repellent fiber is partially It is preferable to enter the hydrophilic fiber layer side because the effect of preventing the drug from bleeding out is improved. Conversely, mechanically entangled from the surface of the hydrophilic fiber layer is not preferable because the hydrophilic fiber that has entered the water-repellent fiber layer becomes a passage through which the drug exudes.
親水性繊維層と撥水性繊維層とを絡合させるには公知の方法が採用でき、例えばニードルパンチ加工や、ウォーターパンチ加工などが挙げられる。 In order to entangle the hydrophilic fiber layer and the water-repellent fiber layer, a known method can be employed, and examples thereof include needle punching and water punching.
前記ニードルパンチ加工では、番手の大きい、即ち細い針を用いると、薬剤が染みだす通路が形成され難いため本発明には有用である。針番手は、例えば３６〜４２番であり、好ましくは３８〜４０番である。しかし本発明の不織布は、人体に直接触れる医療用途などにも使用されるため、針番手が４２番より大きい細い針は、加工時に針が折れ、不織布に針が残る恐れがあるため好ましくない。 In the needle punch processing, if a needle having a large count, that is, a thin needle is used, it is difficult to form a passage through which a drug oozes, and this is useful for the present invention. The needle count is, for example, 36 to 42, and preferably 38 to 40. However, since the nonwoven fabric of the present invention is also used for medical applications that directly touch the human body, a fine needle with a needle count greater than 42 is not preferred because the needle may break during processing and remain on the nonwoven fabric.
また、ニードルパンチ加工の場合、針の打ち込み本数は、例えば３０〜１８０本／ｃｍ2であり、好ましくは５０〜１５０本／ｃｍ2である。打ち込み本数が３０本／ｃｍ2未満になると、親水性繊維層と撥水性繊維層の間で層間剥離が起こりやすくなり且つ、毛羽立ちも多くなり好ましくない。一方打ち込み本数が１８０本／ｃｍ2より多くなると、繊維の絡合が強くなるため、薬剤が繊維層に入りづらくなり、また繊維層から脱落しやすくなるため好ましくない。また、不織布が硬くなり、貼付剤を使用した際に肌に密着し難くなるため好ましくない。 In the case of needle punching, the number of needles to be driven is, for example, 30 to 180 / cm 2 , and preferably 50 to 150 / cm 2 . When the number of driving is less than 30 / cm 2 , delamination is likely to occur between the hydrophilic fiber layer and the water-repellent fiber layer, and fuzzing increases, which is not preferable. On the other hand, when the number of driven-in wires exceeds 180 / cm 2 , the entanglement of the fibers becomes strong, so that it becomes difficult for the drug to enter the fiber layer and easily fall off from the fiber layer. Moreover, since a nonwoven fabric becomes hard and it becomes difficult to adhere | attach on skin when a patch is used, it is not preferable.
前記支持体用不織布は、撥水性を発現するために加熱処理されていることが好ましい。特に撥水性繊維層を構成する繊維として、フッ素系撥水剤で撥水処理された合成繊維を用いる場合には、不織布の加熱処理は必須である。加熱処理に使用される加熱装置としては、例えば熱風循環式乾燥機等が挙げられる。また加熱温度は、例えば１５０℃以上であり、好ましくは１７０℃以上であり、加熱温度の上限は、例えば２００℃以下である。加熱時間は、１６０℃の温度で加熱する場合には１分半以上、１８０℃の温度で加熱する場合には３０秒以上加熱することが好ましい。 The nonwoven fabric for support is preferably heat-treated in order to exhibit water repellency. In particular, when a synthetic fiber subjected to a water repellent treatment with a fluorine-based water repellent is used as the fiber constituting the water repellent fiber layer, the heat treatment of the nonwoven fabric is essential. As a heating apparatus used for the heat treatment, for example, a hot air circulation dryer or the like can be given. Moreover, heating temperature is 150 degreeC or more, for example, Preferably it is 170 degreeC or more, and the upper limit of heating temperature is 200 degreeC or less, for example. The heating time is preferably 1 minute and a half or more when heating at a temperature of 160 ° C., and 30 seconds or more when heating at a temperature of 180 ° C.
上記支持体用不織布は、薬剤を塗布するための基材として使用される。薬剤は、支持体用不織布の親水性繊維層面に塗工される。親水性繊維層面から塗工することで、薬剤は親水性繊維層に浸透した後固着され、浸透しすぎた薬剤も撥水性繊維層にて阻まれて反対面までは染みだすことがない。 The said nonwoven fabric for support bodies is used as a base material for apply | coating a chemical | medical agent. The drug is applied to the hydrophilic fiber layer surface of the support nonwoven fabric. By coating from the hydrophilic fiber layer surface, the drug penetrates the hydrophilic fiber layer and is fixed, and the excessively penetrated drug is blocked by the water-repellent fiber layer and does not ooze out to the opposite surface.
以下、実施例を挙げて本発明をより具体的に説明するが、本発明はもとより下記実施例によって制限を受けるものではなく、前・後記の趣旨に適合し得る範囲で適当に変更を加えて実施することも勿論可能であり、それらはいずれも本発明の技術的範囲に包含される。 EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples. However, the present invention is not limited by the following examples, but may be appropriately modified within a range that can meet the purpose described above and below. Of course, it is possible to implement them, and they are all included in the technical scope of the present invention.
本実施例で使用した繊維は以下の通りである。
１．親水性繊維
（１）レーヨン繊維
（２）親水性共重合体ポリエステル繊維
（３）レギュラーポリエステル繊維（親水剤にて処理済）
２．撥水性繊維
（４）潜在捲縮性ポリエステル繊維（撥水剤にて処理済）
（５）レギュラーポリエステル繊維（シリコーン剤にて処理済）
なお本実施例では、（１）〜（５）に示す繊維は全て、繊度２．２デシテックス、繊維長５１ｍｍのものを使用した。
The fibers used in this example are as follows.
1. Hydrophilic fiber (1) rayon fiber (2) hydrophilic copolymer polyester fiber (3) regular polyester fiber (treated with hydrophilic agent)
2. Water repellent fiber (4) Latent crimped polyester fiber (treated with water repellent)
(5) Regular polyester fiber (treated with silicone agent)
In this example, all the fibers shown in (1) to (5) were those having a fineness of 2.2 dtex and a fiber length of 51 mm.
本発明で採用した評価方法は以下の通りである。
（１）目付
ＪＩＳ Ｌ １９１３ ６．２法に準ずる
（２）厚さ
ＪＩＳ Ｌ １９１３ ６．１．Ｂ法に準ずる
（３）染みだし性
２０ｃｍ×２０ｃｍのガラス板の上に水１００ｃｃに青色インク１滴を入れた試験水１ｃｃを落とし、その上に５ｃｍ×５ｃｍに切った試験片をそっと置き、更に荷重として６．３ｇのスライドグラスに、まず５０ｇの分銅を１０分間載せた後の表面状態を目視観察し、判定を行った。ついで３０ｇの分銅（合計８０ｇの分銅）を１０分間載せた後の表面状態を目視観察し判定を行った。
◎：８０ｇ荷重で染みだしが全く認められない
○：５０ｇ荷重では染みだしが全く認められないが、８０ｇ荷重ではうっすらと青色水の染みだしが認められる
△：５０ｇ荷重でうっすらと青色水の染みだしが認められる
×：５０ｇ荷重で青色水の浮き出しが認められる
The evaluation methods employed in the present invention are as follows.
(1) Based on JIS L 1913 6.2 method (2) Thickness JIS L 1913 6.1. According to Method B (3) Permeability: 1 cc of test water containing 1 drop of blue ink in 100 cc of water is dropped on a 20 cm x 20 cm glass plate, and a test piece cut into 5 cm x 5 cm is gently placed on it. Furthermore, the surface state after placing 50 g of weight on a 6.3 g slide glass as a load for 10 minutes was visually observed and judged. Then, the surface state after placing 10 g of 30 g of weight (total weight of 80 g) for 10 minutes was visually observed and judged.
◎: No oozing out at 80 g load ○: No oozing out at 50 g load, but slight blue water oozing out at 80 g load △: Blue water oozing out slightly at 50 g load Dashi is recognized ×: Blue water is raised at a load of 50 g
実施例１
まずレーヨン繊維（１）及び親水性共重合体ポリエステル繊維（２）をそれぞれ計量した後、繊維を混綿し、カード機で繊維を一定方向に送り出して形成された中間ウェブをラッピングして親水性繊維層（塗膏面となる）を形成した。ついで撥水処理された潜在捲縮性ポリエステル繊維（４）と、シリコーン処理されたレギュラーポリエステル繊維（５）をそれぞれ計量した後、繊維を混綿し、カード機で繊維を一定方向に送り出して中間ウェブを形成し、ラッピングして撥水性繊維層を形成した。前記２層をオンライン上で重ね合わせた後、針番手４０番の針にて打ち込み本数１２０本／ｃｍ2、針深さ９．０ｍｍにて撥水性繊維層側からニードルパンチ加工をおこない支持体用不織布を得た。続いて１８０℃に保った熱風循環式乾燥機に３０秒通し熱処理をおこない撥水性の発現を図った。
Example 1
First, the rayon fiber (1) and the hydrophilic copolymer polyester fiber (2) are weighed, then the fibers are mixed, and the intermediate web formed by sending the fibers in a certain direction with a card machine is wrapped to make the hydrophilic fibers. A layer (being a plaster surface) was formed. Next, after measuring the water-repellent latent crimpable polyester fiber (4) and the silicone-treated regular polyester fiber (5), the fibers are blended, and the fibers are sent out in a certain direction by a card machine, and the intermediate web And wrapping to form a water-repellent fiber layer. After the two layers are overlaid on-line, needle punching is performed from the water-repellent fiber layer side at a needle depth of 120 mm / cm 2 and a needle depth of 9.0 mm with a needle of needle number 40 for support. A nonwoven fabric was obtained. Subsequently, heat treatment was performed for 30 seconds in a hot-air circulating drier maintained at 180 ° C. to develop water repellency.
実施例２〜３
実施例１の親水性繊維層の構成を、表１に記載の量に変更する以外は、実施例１と同様の加工、処理をおこなった。
Examples 2-3
Except for changing the configuration of the hydrophilic fiber layer of Example 1 to the amounts shown in Table 1, the same processing and treatment as Example 1 were performed.
実施例４
まず、親水性共重合ポリエステル繊維（２）を計量した後、カード機で繊維を一定方向に送り出して形成された中間ウェブをラッピングして親水性繊維層を形成した。ついで撥水処理された潜在捲縮性ポリエステル繊維（４）とシリコーン処理されたレギュラーポリエステル繊維（５）をそれぞれ計量し、撥水性繊維層を形成した後、実施例１と同様の方法により支持体用不織布を得た。続いて１８０℃に保った熱風循環式乾燥機に３０秒通し熱処理をおこない、撥水性の発現を図った。
Example 4
First, after the hydrophilic copolyester fiber (2) was weighed, the intermediate web formed by sending out the fiber in a certain direction with a card machine was wrapped to form a hydrophilic fiber layer. Subsequently, the water-repellent-treated latent crimpable polyester fiber (4) and the silicone-treated regular polyester fiber (5) were weighed to form a water-repellent fiber layer, and then a support by the same method as in Example 1. A nonwoven fabric was obtained. Subsequently, heat treatment was performed for 30 seconds in a hot-air circulating dryer maintained at 180 ° C. to develop water repellency.
比較例１
親水処理されたレギュラーポリエステル繊維（３）と撥水処理された潜在捲縮性ポリエステル繊維（４）をそれぞれ計量し、実施例１と同様の方法により、撥水性及び親水性を併せ持った繊維層を形成した。ついで１８０℃に保った熱風循環式乾燥機に３０秒通し熱処理をおこない、撥水性の発現を図った。
Comparative Example 1
The regular polyester fiber (3) subjected to hydrophilic treatment and the latent crimpable polyester fiber (4) subjected to water repellent treatment were weighed, and a fiber layer having both water repellency and hydrophilicity was obtained in the same manner as in Example 1. Formed. Next, heat treatment was performed for 30 seconds in a hot air circulating dryer maintained at 180 ° C. to develop water repellency.
比較例２
撥水処理された潜在捲縮性ポリエステル繊維（４）とシリコーン処理されたレギュラーポリエステル繊維（５）をそれぞれ計量し、実施例１と同様の方法により、撥水性を有する繊維層を形成した。ついで１８０℃に保った熱風循環式乾燥機に３０秒通し熱処理をおこない、撥水性の発現を図った。
Comparative Example 2
The water-repellent latent crimpable polyester fiber (4) and the silicone-treated regular polyester fiber (5) were weighed, and a fiber layer having water repellency was formed in the same manner as in Example 1. Next, heat treatment was performed for 30 seconds in a hot air circulating dryer maintained at 180 ° C. to develop water repellency.
比較例３
レーヨン繊維（１）及び親水性共重合体ポリエステル繊維（２）をそれぞれ計量し、実施例１と同様の方法により、親水性を有する繊維層を得た。
Comparative Example 3
Rayon fiber (1) and hydrophilic copolymer polyester fiber (2) were weighed, and a hydrophilic fiber layer was obtained in the same manner as in Example 1.
比較例４
レーヨン繊維（１）及び親水性共重合体ポリエステル繊維（２）をそれぞれ計量し、さらに撥水処理された潜在捲縮性ポリエステル繊維（４）及びシリコーン処理されたレギュラーポリエステル繊維（５）をそれぞれ計量した後、実施例１と同様の方法により、親水性繊維層及び撥水性繊維層を形成した。前記２層をオンライン上で重ね合わせた後、実施例１とは逆方向である親水性繊維層側から針番手４０番の針にて打ち込み本数１２０本／ｃｍ2、針深さ９．０ｍｍにてニードルパンチ加工をおこない支持体用不織布を得た。続いて１８０℃に保った熱風循環式乾燥機に３０秒間通し熱処理をおこない撥水性の発現を図った。
Comparative Example 4
Rayon fiber (1) and hydrophilic copolymer polyester fiber (2) are weighed, and water-repellent latent crimpable polyester fiber (4) and silicone-treated regular polyester fiber (5) are weighed respectively. Then, a hydrophilic fiber layer and a water-repellent fiber layer were formed by the same method as in Example 1. After the two layers are overlaid on-line, the number of the needles is 120 / cm 2 and the needle depth is 9.0 mm from the hydrophilic fiber layer side opposite to that of Example 1 with a needle number 40 Then, a needle punch process was performed to obtain a nonwoven fabric for support. Subsequently, heat treatment was performed for 30 seconds through a hot-air circulating drier maintained at 180 ° C. to develop water repellency.
上記実施例及び比較例の結果を整理すると、下記表１及び表２の通りである。 The results of the examples and comparative examples are summarized as shown in Tables 1 and 2 below.
Claims (10)
前記撥水性繊維層を構成する繊維が捲縮性複合繊維と非捲縮性繊維である請求項１〜７のいずれかに記載の支持体用不織布。 The fibers constituting the hydrophilic fiber layer are non-crimpable fibers,
The nonwoven fabric for a support according to any one of claims 1 to 7, wherein the fibers constituting the water-repellent fiber layer are a crimpable conjugate fiber and a non-crimpable fiber.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016001978A1 (en) | 2014-06-30 | 2016-01-07 | 花王株式会社 | Adhesive sheet for cooling |
| JP6726421B2 (en) * | 2015-11-13 | 2020-07-22 | ダイワボウホールディングス株式会社 | Non-woven fabric for liquid-impregnated skin covering sheet and liquid-impregnated skin covering sheet |
| CN114768387B (en) * | 2022-04-07 | 2023-12-05 | 上海博格工业用布有限公司 | Super-hydrophobic filter felt and preparation method thereof |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5517355A (en) * | 1978-07-26 | 1980-02-06 | Japan Vilene Co Ltd | Skin plaster |
| JP2855739B2 (en) * | 1990-01-12 | 1999-02-10 | 東洋紡績株式会社 | Elastic nonwoven |
| JP2003286158A (en) * | 2002-03-26 | 2003-10-07 | Tokuhon Corp | Plaster and method for producing the same |
| JP2004162246A (en) * | 2002-10-24 | 2004-06-10 | Toray Ind Inc | Nonwoven fabric containing cellulosic fiber |
| JP2005029907A (en) * | 2003-07-08 | 2005-02-03 | Kanebo Ltd | Stretchable nonwoven fabric, method for producing the same and pressure-sensitive adhesive sheet using the same |
| JP4444724B2 (en) * | 2004-04-20 | 2010-03-31 | 株式会社リブドゥコーポレーション | Absorbent article using granular material carrying sheet |
| JP5292615B2 (en) * | 2007-04-11 | 2013-09-18 | クラレクラフレックス株式会社 | Non-woven sheet, water-containing sheet and cosmetic containing the same |
| JP5095457B2 (en) * | 2008-03-21 | 2012-12-12 | 東洋紡株式会社 | Non-woven fabric for heating tool and heating tool using the same |
| JP5043795B2 (en) * | 2008-10-08 | 2012-10-10 | 呉羽テック株式会社 | Elastic nonwoven fabric |
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2011
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