JP4668456B2 - Cosmetic paper for skin cleansing - Google Patents
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Description
【０００１】
【発明の属する技術分野】
本願発明は、皮脂吸収作用をもつ皮膚清拭用化粧用紙に関するものである。
【０００２】
【従来の技術】
人体の顔面皮膚に分泌される皮脂を吸収して顔面を清拭する化粧用紙として脂取り紙が知られている。この脂取り紙は、皮脂吸収性は勿論のこと、それ以外にも、顔面皮膚への肌ざわり感触とか柔軟性といった感覚上の要素も重要である。
【０００３】
ところで、皮脂吸収作用をもつ皮膚清拭用化粧用紙（いわゆる「脂取り紙」）に柔軟性を付与するために色々な柔軟剤を使用することが考えられるが、従来から一般的な柔軟剤の添加は、紙の繊維間結合を弱め、脂取り紙の基本的機能である皮脂吸収作用を低下させるという問題がある。
【０００４】
保湿効果により紙を柔軟化させる天然素材に由来するコラーゲンなどの成分・繊維は非常に高価であり、また、硬化しやすく、その保湿能力が低下するため、効果を持続することが難しい。
【０００５】
また、天然に置き換え素材としての合成の柔軟剤（たとえば、東邦化学 ソフノン）があるが、合成柔軟剤は有臭性があり、化粧用紙には不適合である。
【０００６】
一方、紙に柔軟性を付与するための物理的方法として、いわゆる金箔打ち加工法があるが、この方法は、生産性が悪くコスト高になり、消費者に安価な製品を提供できない、という難点がある。
【０００７】
【発明が解決しようとする課題】
本願発明は、すぐれた皮脂吸収性とともに、高度な柔軟性をそなえた皮膚清拭用化粧用紙を低コストに提供しようとなされたものである。
【０００８】
【課題を解決するための手段】
本願発明の皮膚清拭用化粧用紙は、紙の主成分となる繊維原料のほかに、皮脂吸収作用をもつ吸油性填料と、紙に柔軟性を付与する柔軟剤とを基本構成要素としてなる。
【０００９】
本願発明の化粧用紙の原料となる繊維としては、木材パルプ繊維、マニラ麻、亜麻、大麻、黄麻、楮、三椏、雁皮等の靱皮繊維、コットン、藁、竹、ケナフ等の非木材パルプ繊維、アクリルやレーヨン等の化学繊維、シルク等の動物繊維が挙げられる。特にマニラ麻、亜麻、大麻、黄麻、楮、三椏、雁皮等の靱皮繊維を原料とする化粧用紙は強度が高く、吸脂能力に優れている。これらの繊維は、それぞれ単独で用いられてもよく、また２種以上を混合して用いてもよい。一般公知の抄紙方法で抄紙された化粧用紙の坪量（ＪＩＳＰ−８１２４による。以下、同じ）が８〜３０ｇ／ｍ2であれば、化粧用紙として好適に使用できる。上記化粧用紙の坪量が８ｇ／ｍ2未満であると強度が低く使用時に撚れや破損を生じやすくなり、坪量が３０ｇ／ｍ2を超えるとコストが嵩むだけでなく、また、しなやかさがなくなり、使用感が悪化する。
【００１０】
脂取り紙用として好適な填料としては、従来公知の吸油性無機填料が使用可能であるが、たとえばスチレンビーズのような有機填料も使うことができる。
【００１１】
化粧用紙用、特に脂取り紙用として好適な吸油性無機填料としては、クレー、タルク、炭酸カルシウム、ホワイトカーボン、酸化チタン、ヒドロキシアパタイト等があるが、その中で最も好適な無機填料としては本願出願人の先願にかかる特願２０００−２３４９０８号で開示されている「ヒドロキシアパタイト」含有の無機填料がある。ヒドロキシアパタイト［Ｃａ10（ＰＯ4）6（ＯＨ）2］は、人の骨や歯の成分であり、リン酸カリシウムの一種で、工業的には陽イオン、陰イオン、たんぱく質、アミノ酸などに対して優れた吸着性を有する材料として、また、生体への影響が小さいことから、人工歯根など生体適合材として注目されている。ヒドロキシアパタイトは、皮脂の中でも、特に酸化された皮脂（過酸化脂質）を効率よく吸着する性質を有するため、これを吸油性填料中に含有させることにより、酸化皮脂を効率よく吸収する化粧用紙が得られる。ヒドロキシアパタイトの含有量は、化粧用紙の主成分である繊維原料に対して１〜１００重量％とするのがよい。１％未満だと十分な過酸化脂質吸着効果が得られず、１００％以上だと化粧用紙としての十分な紙の強度が得られない。
【００１２】
上記填料中には、さらにタルクを含有させるのが好適である。タルクの含有量は、化粧用紙の主成分である繊維原料に対して０．５〜９０重量％とするのがよい。また、上記填料は平均粒子径を０．５〜８μｍとするのがよい（就中、０．５〜２μｍの範囲が、化粧用紙の平滑度を向上させる上で特に好適である）。更に好適には、２種類以上の填料を組み合わせるのが好適であり、特にヒドロキシアパタイトとタルクの組み合わせは、柔軟性、吸脂性に好適な相乗効果をかもしだす。
【００１３】
平均粒子径が０．５μｍ未満の填料は、紙中への歩留まりが悪く、コスト的に不利であり、脂質の除去性に劣る。平均粒子径が８μｍを超えると肌触りが極端に悪化し、粉落ちなどの問題が生じる。上記のように、填料中にタルクを０．５〜９０重量％含有させると、紙の平滑度が向上し、化粧用紙の肌触りがよくなる。さらに加えて、吸脂時に紙の透明度を向上させる機能がより優れたものとなる。また、本願発明の化粧用紙には、保湿剤およびおしろい粉の少なくとも一方を含有させることもできる。保湿剤やおしろい粉を含有させることにより、皮膚の保護性や化粧の効果により優れた化粧用紙となる。
【００１４】
本願発明の化粧用紙では、上記例示のような填料のほかに、さらに化粧用紙に柔軟性を与付するために多価アルコール系の柔軟剤を添加する。
【００１５】
本願発明にかかる化粧用紙は、上記例示の填料や柔軟剤等が、どのような形態で含まれていてもよい。内添されていてもよいし、抄紙後の原紙に填料を塗工するようにしてもよい。
【００１６】
なお、本願発明の化粧用紙は、既知の化粧用紙の抄紙方法に基づいて、抄紙することが可能である。たとえば、填料や柔軟剤等を添加した繊維パルプスラリーを既知の抄紙機によって抄紙して製造することが可能である。
【００１７】
一方、本願発明の化粧用紙は、次記の疑似吸脂量測定方法による吸脂量が１ｇ／ｍ2以上であることが望ましい。吸脂量が１ｇ／ｍ2未満であると、吸収する皮脂の量が少なすぎて化粧用紙として適さない。吸脂量が１ｇ／ｍ2以上であれば、化粧用紙の皮脂吸収量としては十分である。
【００１８】
上記疑似吸脂量測定法は、印刷適性試験機の胴の表面に２１ｃｍ×２５ｃｍの試料片を粘着テープなどで固定して有効面積１９ｃｍ×１８ｃｍとし、上記印刷適性試験機の印刷ロールに油液（ヒマシ油８０重量％＋ベンジルアルコール２０重量％）０．５ｍｌを膜厚４．８μｍとなるように均一に塗布した上、上記胴と印刷ロールとのニップ幅を５ｍｍとして転写回転速度３０ｒｐｍで１回転させて、上記油液を上記試料に転写させる。その後に、転写後の有効面積分の試料片の重量から転写前の有効面積分の紙の重量を差分した値（数１）に基づいて、試料１ｍ2あたりの吸脂量とする。
【００１９】
【数１】
また、脂取り紙に代表される、皮脂を吸収させて除去することを目的とする化粧用紙は、使用者が皮脂を拭き取れたことを視覚的に確認できるように、多くの場合、皮脂を吸収すると、吸収部分の透明度が向上する機能を有している。本願発明者らは、かかる機能の良否をパンチ力という数値で表している。パンチ力は、吸脂前と吸脂後の紙の色差より算出される値であり、パンチ力の数値が高ければ高いほど、吸脂時に透明度が向上することになり使用者の満足感が得られる化粧用紙である。
【００２１】
本願発明の化粧用紙は、上記パンチ力が５．０以上であることが好ましい。パンチ力が５．０以上あれば、吸脂時に透明性が発現して、吸脂高価を視覚的に確認できる。ここで、パンチ力の測定方法は、次記の通りである。まず、裏当てに白色板および黒色板を用い、分光白色光度計「ＥＰＲ−８０ＷＸ」（東京電色株式会社製）にて、転写前の紙試料の色彩度Ｌｗ、Ａｗ、ＢｗおよびＬａ、Ａｂ、Ｂｂをそれぞれ測定し、両者の色差ΔＥ1を（数２）に従って算出する。それとともに、上記吸脂量の測定と同様に、上記印刷適性試験機の胴の表面に２１ｃｍ×２５ｃｍの試料片を粘着テープなどで固定して有効面積１９ｃｍ×１８ｃｍとし、上記印刷適性試験機の印刷ロールに油液（ヒマシ油８０重量％＋ベンジルアルコール２０重量％）０．５ｍｌを膜厚４．８μｍとにるように均一に塗布し、上記胴と印刷ロールとのニップ幅を５ｍｍとして転写回転速度３０ｒｐｍで１回転させて、上記油液を上記試料に転写させる。次いで、転写後の紙試料の色差ΔＥ2を転写前の紙試料のΔＥ1と転写後の紙試料の色差ΔＥ2とから（数３）にしたがってパンチ力ΔＥを算出する。
【００２２】
【数２】
ΔＥｎ＝{(Ｌｗ−Ｌｂ)2＋(Ａｗ−Ａｂ)2＋(Ｂｗ−Ｂｂ)2}/2
ただし、Ｌｗ：白色使用時の明度、Ｌｂ：黒色使用時の明度
Ａｗ：白色使用時の青〜黄色味、Ａｂ：黒色使用時の青〜黄色味
Ｂｗ：白色使用時の赤〜緑色味、Ｂｂ：黒色使用時の赤〜緑色味
【００２３】
【数３】
ΔＥ＝ΔＥ1＋ΔＥ2
ΔＥ：パンチ力
一方、好適には、本願発明の化粧用紙に含有される上記例示の無機填料は、上記のように、タルク０．５〜９０重量％とヒドロキシアパタイトとを含有するのが好ましい。上記タルクは、平均粒子径が０．５〜８μｍのタルクであり、好適には、平均粒子径０．５〜２μｍの微粉タルクである。タルクの平均粒子径は、既知のマイクロトラック法によって測定すればよい。また、整粒された市販のタルク（日本タルク株式会社製、ＳＧ−２０００）等を用いることもできる。タルクを含有させることにより、紙の平滑度が向上し、肌触りが良くなり、使用感に優れた化粧用紙となる。
【００２４】
かかる化粧用紙は、非常に肌触り感に優れ、かつ酸化皮脂の吸脂性にも優れ、さらに、一般的な化粧用紙、特に脂取り紙の機能である、皮脂を吸収した際に、その吸収部分の透明度が向上するという機能がより優れたものとなる。よって、使用者は、吸脂効果を視覚的に確認でき、満足感が得られるようになる。
【００２５】
また、本願発明の化粧用紙は、保湿剤やおしろい粉などを含有させることも可能である。上記保湿剤としては、ホホバ油、グリセロール、１，３−ブチレングリコール、ヒアルロン酸、コラーゲン等の保湿機能をもった物質が挙げられる。
【００２６】
本願発明の化粧用紙は、着色剤を用いて着色することも可能である。化粧用紙を着色すると、吸脂部分と非吸脂部分とのコントラストがはっきりして、より吸脂効果を視覚によって確認がしやすくなる。着色剤としては、塩基性染料、酸性染料、直接染料といった公知の染料および顔料を用いることが可能である。顔料は、色の滲みが少なく、耐色性に優れている。染料は化粧紙が肌に直接触れるものであることから、食用染料が好ましい。
【００２７】
化粧用紙の柔軟性に関する要素として、本願発明者は、紙の坪量及び密度、柔軟剤の種類と添加量が特に重要であると考えるとともに、これらの３要素と、化粧用紙の軟らかさ、パンチ力、皮脂吸収作用及びふきとり適性との関係をみるために、１２例の試料を作り、それぞれについて種々のテストを行って、表１のような結果を得た。
【００２８】
なお、本願発明の化粧用紙では柔軟剤として日新化学研究所 ネオソフターを使用する。
【００２９】
＜評価基準＞
本願発明者が、化粧用紙の軟らかさ：紙パルプ技術協会が発行するＪＡＰＡＮＴＡＰＰＩ規格 Ｔ４９８による「ハンドルオメータ法」に基づき測定した。パンチ力、吸脂量の測定：前段に記載したとおりである。
【００３０】
過酸化脂質の吸着率：次記のとおり測定した。まず、図１のように組立てた装置のカラム１に試料１ｇを入れ、ｎ−ヘキサン４ｇで希釈したオリーブ油（和光純薬製）２ｇをカラム１の上部から流す。このとき、カラム１内をオリーブ油が流れるように吸引しながら行う。次いで、カラム上部よりｎ−ヘキサン１００ｍｌを流して流出液を採取する。次いで、その流出液をウォーターバスで蒸発させ、残量約１０ｍｌになったところで、ウォータバスより取り出し、該混合液に氷酢酸１０ｍｌおよびヨウ化カリウム２ｇを添加して撹拌する。次いで、この混合液中の遊離したヨウ素を、ビュレットを用いて０．０１ｍｏｌ／ｌチオ硫酸ナトリウムにて滴定する。終点はデンプン指示薬を入れ求める。滴定結果より過酸化物価を求め、求められた過酸化物価より過酸化脂質の吸着量を算出する。
【００３１】
【表１】
表１に記載されている各試料について、柔軟性、パンチ力、吸脂量及びふきとり適性について測定したところ、試料ＮＯ．１〜１２の各試料のうち、試料ＮＯ．１〜６の各試料は、柔らかさ、パンチ力、吸脂量、ふきとり適性とも目標とする数値又は結果が得られた。
【００３３】
これに対して、表１に記載されている試料ＮＯ．１〜１２の各試料のうち、試料ＮＯ．７〜１２の各試料は次のような理由で化粧用紙として不適格であった。
【００３４】
すなわち、試料ＮＯ．７の試料は、坪量を小さくしてみたものであるが（５ｇ／ｍ2）、使用時に撚れや破れが生じ、又吸脂量も１ｇ／ｍ2に満たず、化粧用紙としては不適格であった。
【００３５】
試料ＮＯ．８の試料は、試料ＮＯ．７の試料とは逆に坪量を大きくしてみたものであるが（３３ｇ／ｍ2）、必要な柔軟性が得られなかった。
【００３６】
次に、試料ＮＯ．９の試料は、柔軟剤の添加量を少なくしてみたものであるが、（０．０５重量％）、必要な柔軟性に欠けるものであった。
【００３７】
試料ＮＯ．１０の試料は、密度を大きくしてみたものであるが（０．８５ｇ／ｃｍ3）、必要な吸脂量が得られなかった。
【００３８】
試料ＮＯ．１１の試料は、多量の柔軟剤を添加してみたものであるが（１２０重量％）、柔軟性は十分であったが、その逆作用として必要な吸脂量（１．０ｇ／ｍ2）とパンチ力が得られなかった。
【００３９】
次に、試料ＮＯ．１２の試料は、密度を小さくしてみたものであるが（０．３０ｇ／ｃｍ3）、必要な吸脂量（１ｇ／ｍ2）及びパンチ力が得られなかった。又、ふきとり適性の点でも良好な結果が得られなかった。
【００４０】
以上の考察にもとずいて、本願発明者は、皮膚清拭用の化粧用紙として好適な数値として坪量の範囲を８〜３０ｇ／ｍ2とし、密度を０．４０〜０．７５ｇ／ｃｍ3とし、柔軟剤の添加量を繊維原料に対して０．１〜１００重量％としたものである。
【００４１】
【実施例】
＜実施例１＞
針葉樹パルプと広葉樹パルプとの混合パルプ（針葉樹パルプ／広葉樹パルプ：８０／２０）を原料とし叩解度５００ｍｌに調整し、平均粒子径１μｍのタルク２５重量パーセントおよび平均粒子径３μｍのヒドロキシアパタイト５重量パーセントを添加したパルプスラリーを、既知の抄紙機にて抄紙して坪量１５ｇ／ｍ2の化粧用紙を得た。
【００４２】
＜実施例２＞
針葉樹パルプとマニラ麻パルプとの混合パルプ（針葉樹パルプ／マニラ麻パルプ：５０／５０）を原料とし叩解度５００ｍｌに調整し、平均粒子径３μｍのタルク１０重量パーセントおよび平均粒子径３μｍのヒドロキシアパタイト１０重量パーセントを添加したパルプスラリーを、既知の抄紙機にて抄紙して坪量１５ｇ／ｍ2の化粧用紙を得た。
【００４３】
＜実施例３＞
針葉樹パルプとマニラ麻パルプとの混合パルプ（針葉樹パルプ／マニラ麻パルプ：７５／２５）を原料とし叩解度５００ｍｌに調整し、平均粒子径１μｍのタルク５０重量パーセントおよび平均粒子径５μｍのヒドロキシアパタイト２０重量パーセントを添加したパルプスラリーを、既知の抄紙機にて抄紙して坪量２０ｇ／ｍ2の化粧用紙を得た。
【００４４】
＜実施例４＞
針葉樹パルプとマニラ麻パルプとの混合パルプ（針葉樹パルプ／マニラ麻パルプ：７０／３０）を原料とし叩解度５００ｍｌに調整し、平均粒子径３μｍのタルク３０重量パーセントおよび平均粒子径３μｍのヒドロキシアパタイト５０重量パーセントを添加したパルプスラリーを、既知の抄紙機にて抄紙して坪量１５ｇ／ｍ2の化粧用紙を得た。
【００４５】
＜実施例５＞
針葉樹パルプとマニラ麻パルプとの混合パルプ（針葉樹パルプ／マニラ麻パルプ：３０／７０）を原料とし叩解度５００ｍｌに調整し、平均粒子径１μｍのタルク１０重量パーセントおよび平均粒子径３μｍのヒドロキシアパタイト５０重量パーセントを添加したパルプスラリーを、既知の抄紙機にて抄紙して坪量３０ｇ／ｍ2の化粧用紙を得た。
【００４６】
＜実施例６＞
針葉樹パルプとマニラ麻パルプとの混合パルプ（針葉樹パルプ／マニラ麻パルプ：６０／４０）を原料とし叩解度５００ｍｌに調整し、平均粒子径１μｍのタルク５重量パーセントおよび平均粒子径５μｍのヒドロキシアパタイト５重量パーセントを添加したパルプスラリーを、既知の抄紙機にて抄紙して坪量８ｇ／ｍ2の化粧用紙を得た。
【００４７】
上記実施例１〜６の各化粧用紙における密度、柔軟剤添加量、軟らかさ、パンチ力、吸脂量、肌触り、ふきとり適性等は、表２に示す通りであり、それぞれ本願発明の要件を充足し、総合判定においても良好と認められた。
【００４８】
＜比較例１＞
針葉樹パルプとマニラ麻パルプとの混合パルプ（針葉樹パルプ／マニラ麻パルプ：４０／６０）を原料とし叩解度５００ｍｌに調整し、平均粒子径１０μｍのタルク０．３重量パーセントおよび平均粒子径５μｍのヒドロキシアパタイト５重量パーセントを添加したパルプスラリーを、既知の抄紙機にて抄紙して坪量５ｇ／ｍ2の化粧用紙を得た。
【００４９】
＜比較例２＞
針葉樹パルプとマニラ麻パルプとの混合パルプ（針葉樹パルプ／マニラ麻パルプ：５０／５０）を原料とし叩解度５００ｍｌに調整し、平均粒子径５μｍのタルク１重量パーセントおよび平均粒子径０．３μｍのヒドロキシアパタイト０．５重量パーセントを添加したパルプスラリーを、既知の抄紙機にて抄紙して坪量３３ｇ／ｍ2の化粧用紙を得た。
【００５０】
＜比較例３＞
針葉樹パルプとマニラ麻パルプとの混合パルプ（針葉樹パルプ／マニラ麻パルプ：９０／１０）を原料とし叩解度５００ｍｌに調整し、平均粒子径０．３μｍのタルク５重量パーセントおよび平均粒子径１０μｍのヒドロキシアパタイト３０重量パーセントを添加したパルプスラリーを、既知の抄紙機にて抄紙して坪量１５ｇ／ｍ2の化粧用紙を得た。
【００５１】
＜比較例４＞
針葉樹パルプとマニラ麻パルプとの混合パルプ（針葉樹パルプ／マニラ麻パルプ：４０／６０）を原料とし叩解度５００ｍｌに調整し、平均粒子径３μｍのタルク１５０重量パーセントおよび平均粒子径３μｍのヒドロキシアパタイト３０重量パーセントを添加したパルプスラリーを、既知の抄紙機にて抄紙して坪量２０ｇ／ｍ2の化粧用紙を得た。
【００５２】
＜比較例５＞
針葉樹パルプとマニラ麻パルプとの混合パルプ（針葉樹パルプ／マニラ麻パルプ：７０／３０）を原料とし叩解度５００ｍｌに調整し、平均粒子径５μｍのタルク１０重量パーセントおよび平均粒子径３μｍのヒドロキシアパタイト０．３重量パーセントを添加したパルプスラリーを、既知の抄紙機にて抄紙して坪量１５ｇ／ｍ2の化粧用紙を得た。
【００５３】
＜比較例６＞
針葉樹パルプとマニラ麻パルプとの混合パルプ（針葉樹パルプ／マニラ麻パルプ：５０／５０）を原料とし叩解度５００ｍｌに調整し、平均粒子径３μｍのタルク１００重量パーセントおよび平均粒子径３μｍのヒドロキシアパタイト１２０重量パーセントを添加したパルプスラリーを、既知の抄紙機にて抄紙して坪量１５ｇ／ｍ2の化粧用紙を得た。
【００５４】
上記比較例１〜６の各化粧用紙における密度、柔軟剤添加量、軟らかさ、パンチ力、吸脂量、肌触り、ふきとり適性等は表２に示す通りであり、それらの各比較例のものは、いずれかの項目で本願発明の要件を充足せず、その結果、総合判定においても良好な評価を得られなかった。
【００５５】
【発明の効果】
以上の説明から明らかなように、本願発明の皮膚清拭用化粧用紙は、必要な皮脂吸収作用のほか、十分な柔軟性をそなえており、使用感のすぐれたものであり、しかも安価に製造し得る効果がある。
【００５６】
【表２】
【図面の簡単な説明】
【図１】過酸化脂質の吸着率の測定に用いた装置図である。
【符号の説明】
１・・・カラム。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cosmetic paper for skin wiping having a sebum absorbing action.
[0002]
[Prior art]
Oil removing paper is known as a decorative paper that absorbs sebum secreted into the facial skin of the human body and wipes the face. In addition to the sebum absorbability, this degreased paper is also important in terms of sensory factors such as the feeling of touch and flexibility on the facial skin.
[0003]
By the way, it is conceivable to use various softeners to impart flexibility to the skin-wiping cosmetic paper (so-called “grease paper”) having a sebum-absorbing action. Addition has the problem that the fiber-fiber bond of paper is weakened and the sebum absorbing action, which is the basic function of degreasing paper, is reduced.
[0004]
Ingredients and fibers such as collagen derived from natural materials that soften the paper by the moisturizing effect are very expensive, are easy to harden, and their moisturizing ability is reduced, making it difficult to maintain the effect.
[0005]
In addition, there are synthetic softeners (for example, Toho Kagaku Sophon) as a substitute material for nature, but synthetic softeners are odorous and are not suitable for decorative paper.
[0006]
On the other hand, as a physical method for imparting flexibility to paper, there is a so-called gold foil punching method, but this method has a disadvantage that productivity is low and cost is high, and it is not possible to provide an inexpensive product to consumers. There is.
[0007]
[Problems to be solved by the invention]
The present invention is intended to provide a low-cost cosmetic paper for wiping the skin having excellent sebum absorption and high flexibility.
[0008]
[Means for Solving the Problems]
The cosmetic sheet for skin wiping of the present invention has, as a basic component, an oil-absorbing filler having a sebum-absorbing action and a softening agent that imparts flexibility to the paper, in addition to the fiber raw material that is the main component of the paper.
[0009]
The fibers used as the raw material of the decorative paper of the present invention include wood pulp fibers, manila hemp, flax, cannabis, jute, bast fibers such as cocoons, cocoons, husks, cotton, cocoons, bamboo, kenaf and other non-wood pulp fibers, acrylics And chemical fibers such as rayon and animal fibers such as silk. In particular, decorative paper made from bast fibers such as manila hemp, flax, cannabis, jute, cocoon, cocoon, husk and the like is high in strength and excellent in oil absorption. These fibers may be used alone or in combination of two or more. If the basis weight (according to JISP-8124, the same applies hereinafter) of the decorative paper produced by a generally known paper making method is 8 to 30 g / m 2 , it can be suitably used as a decorative paper. When the basis weight of the decorative paper is less than 8 g / m 2 , the strength is low, and twisting and breakage are likely to occur during use. When the basis weight exceeds 30 g / m 2 , not only the cost increases, but also the flexibility. Disappears and the feeling of use deteriorates.
[0010]
Conventionally known oil-absorbing inorganic fillers can be used as fillers suitable for degreasing paper, but organic fillers such as styrene beads can also be used.
[0011]
Examples of oil-absorbing inorganic fillers suitable for decorative paper, particularly for degreased paper, include clay, talc, calcium carbonate, white carbon, titanium oxide, and hydroxyapatite. There is an inorganic filler containing “hydroxyapatite” disclosed in Japanese Patent Application No. 2000-234908 according to the prior application of the applicant. Hydroxyapatite [Ca 10 (PO 4 ) 6 (OH) 2 ] is a component of human bones and teeth and is a kind of calcium phosphate, industrially for cations, anions, proteins, amino acids, etc. In particular, it has attracted attention as a biocompatible material such as an artificial tooth root because of its excellent adsorptive properties and small influence on the living body. Hydroxyapatite has a property of efficiently adsorbing oxidized sebum (lipid peroxide) among sebum, so that a cosmetic paper that efficiently absorbs oxidized sebum can be obtained by including this in an oil-absorbing filler. can get. The content of hydroxyapatite is preferably 1 to 100% by weight with respect to the fiber raw material which is the main component of the decorative paper. If it is less than 1%, sufficient lipid peroxide adsorption effect cannot be obtained, and if it is 100% or more, sufficient paper strength as decorative paper cannot be obtained.
[0012]
It is preferable to further contain talc in the filler. The content of talc is preferably 0.5 to 90% by weight with respect to the fiber raw material that is the main component of the decorative paper. The filler preferably has an average particle size of 0.5 to 8 μm (in particular, a range of 0.5 to 2 μm is particularly suitable for improving the smoothness of the decorative paper). More preferably, it is preferable to combine two or more kinds of fillers, and in particular, the combination of hydroxyapatite and talc has a synergistic effect suitable for flexibility and oil absorption.
[0013]
A filler having an average particle size of less than 0.5 μm has a poor yield in paper, is disadvantageous in terms of cost, and is inferior in lipid removability. When the average particle diameter exceeds 8 μm, the touch is extremely deteriorated, and problems such as powder falling occur. As described above, when 0.5 to 90% by weight of talc is contained in the filler, the smoothness of the paper is improved and the touch of the decorative paper is improved. In addition, the function of improving the transparency of paper at the time of oil absorption becomes more excellent. In addition, the decorative paper of the present invention may contain at least one of a moisturizing agent and a funny powder. By containing a moisturizing agent and a white powder, the decorative paper is excellent in terms of skin protection and cosmetic effects.
[0014]
In the decorative paper of the present invention, in addition to the fillers as exemplified above, a polyhydric alcohol softener is added to impart flexibility to the decorative paper.
[0015]
The decorative paper according to the present invention may contain the above-mentioned fillers, softeners, and the like in any form. It may be internally added or a filler may be applied to the base paper after paper making.
[0016]
The decorative paper of the present invention can be made based on a known decorative paper making method. For example, it is possible to produce a fiber pulp slurry to which fillers, softening agents, and the like are added, by making paper using a known paper machine.
[0017]
On the other hand, the decorative paper of the present invention desirably has a fat absorption amount of 1 g / m 2 or more according to the pseudo fat absorption amount measuring method described below. If the amount of oil absorption is less than 1 g / m 2 , the amount of sebum absorbed is too small to be suitable as a decorative paper. If the amount of oil absorption is 1 g / m 2 or more, the amount of sebum absorbed by the decorative paper is sufficient.
[0018]
The pseudo fat-absorbing amount measurement method is as follows. A sample piece of 21 cm × 25 cm is fixed to the surface of a cylinder of a printability tester with an adhesive tape or the like to make an effective area of 19 cm × 18 cm, and an oil liquid is applied to a print roll of the printability tester. 0.5 ml of castor oil (80% by weight + benzyl alcohol 20% by weight) was uniformly applied to a film thickness of 4.8 μm, and the nip width between the cylinder and the printing roll was 5 mm, and the transfer rotation speed was 30 rpm. Rotate to transfer the oil to the sample. Then, based on the value (Equation 1) obtained by subtracting the weight of the paper for the effective area before transfer from the weight of the sample piece for the effective area after transfer, the amount of oil absorption per 1 m 2 of the sample is obtained.
[0019]
[Expression 1]
In addition, decorative papers that are intended to absorb and remove sebum, such as degreased paper, often absorb sebum so that the user can visually confirm that the sebum has been wiped off. Then, it has a function of improving the transparency of the absorbing portion. The inventors of the present application express the quality of this function as a numerical value called punching force. The punching force is a value calculated from the color difference between the paper before and after oil absorption. The higher the value of the punching force, the better the transparency during oil absorption and the satisfaction of the user. Decorative paper.
[0021]
The decorative paper of the present invention preferably has a punching power of 5.0 or more. If the punching force is 5.0 or more, transparency is exhibited at the time of oil absorption, and the cost of oil absorption can be visually confirmed. Here, the measuring method of punch force is as follows. First, a white plate and a black plate are used for the backing, and the spectral whiteness photometer “EPR-80WX” (manufactured by Tokyo Denshoku Co., Ltd.) uses the color saturation Lw, Aw, Bw and La, Ab of the paper sample before transfer. , Bb are measured, and the color difference ΔE 1 between them is calculated according to (Equation 2). At the same time, in the same manner as the measurement of the fat absorption amount, a 21 cm × 25 cm sample piece is fixed to the surface of the cylinder of the printability tester with an adhesive tape or the like to obtain an effective area of 19 cm × 18 cm. 0.5 ml of oil solution (80% by weight of castor oil + 20% by weight of benzyl alcohol) is uniformly applied to the printing roll so as to have a film thickness of 4.8 μm, and transferred with the nip width between the cylinder and the printing roll being 5 mm. The oil solution is transferred to the sample by rotating once at a rotation speed of 30 rpm. Next, the punching force ΔE is calculated from the color difference ΔE 2 of the paper sample after transfer from the ΔE 1 of the paper sample before transfer and the color difference ΔE 2 of the paper sample after transfer according to (Equation 3).
[0022]
[Expression 2]
ΔEn = {(Lw−Lb) 2 + (Aw−Ab) 2 + (Bw−Bb) 2 } / 2
However, Lw: Lightness when using white, Lb: Lightness when using black Aw: Blue to yellow when using white, Ab: Blue to yellow when using black Bw: Red to green when using white, Bb : Red to green taste when using black [0023]
[Equation 3]
ΔE = ΔE 1 + ΔE 2
ΔE: Punching force On the other hand, preferably, the above-described inorganic filler contained in the decorative paper of the present invention preferably contains 0.5 to 90% by weight of talc and hydroxyapatite. The talc is talc having an average particle size of 0.5 to 8 μm, and preferably fine talc having an average particle size of 0.5 to 2 μm. The average particle diameter of talc may be measured by a known microtrack method. In addition, commercially available talc that has been sized (Nippon Talc Co., Ltd., SG-2000) or the like can also be used. By containing talc, the smoothness of the paper is improved, the touch is improved, and the decorative paper has an excellent usability.
[0024]
Such a decorative paper has a very soft touch and is excellent in the absorbency of oxidized sebum, and further, when absorbing sebum, which is a function of general decorative paper, particularly a degreased paper, its absorbing portion The function of improving the transparency of the film becomes more excellent. Therefore, the user can visually confirm the fat absorption effect, and satisfaction can be obtained.
[0025]
In addition, the decorative paper of the present invention can contain a moisturizing agent, an interesting powder and the like. Examples of the humectant include substances having a moisturizing function such as jojoba oil, glycerol, 1,3-butylene glycol, hyaluronic acid, collagen and the like.
[0026]
The decorative paper of the present invention can also be colored using a colorant. When the decorative paper is colored, the contrast between the oil-absorbing portion and the non-oil-absorbing portion is clear, and it becomes easier to visually confirm the oil-absorbing effect. As the colorant, known dyes and pigments such as basic dyes, acid dyes, and direct dyes can be used. The pigment has little color bleeding and excellent color resistance. The dye is preferably an edible dye because the decorative paper is in direct contact with the skin.
[0027]
The present inventor considers that the basis weight and density of the paper and the type and amount of the softener are particularly important as factors relating to the flexibility of the decorative paper, and these three factors, the softness of the decorative paper, the punch In order to see the relationship between force, sebum absorption and wipeability, 12 samples were prepared, and various tests were performed on each sample. The results shown in Table 1 were obtained.
[0028]
In the decorative paper of the present invention, Nisshin Chemical Laboratory Neosofter is used as a softening agent.
[0029]
<Evaluation criteria>
The inventor of the present application measured the softness of the decorative paper based on the “handle ohmmeter method” according to JAPANTAPPI standard T498 issued by Japan Paper Pulp Technology Association. Measurement of punch force and oil absorption: as described in the previous section.
[0030]
Lipid peroxide adsorption rate: measured as follows. First, 1 g of a sample is placed in the
[0031]
[Table 1]
Each sample listed in Table 1 was measured for flexibility, punching force, amount of oil absorption and wiping suitability. Among each sample of 1-12, sample NO. For each of the
[0033]
On the other hand, the sample NO. Among each sample of 1-12, sample NO. Samples 7 to 12 were not suitable as decorative paper for the following reasons.
[0034]
That is, sample NO. The sample No. 7 was obtained by reducing the basis weight (5 g / m 2 ), but twisted or torn during use, and the amount of oil absorption was less than 1 g / m 2, which is not suitable for decorative paper. It was eligible.
[0035]
Sample No. Sample No. 8 is sample NO. Contrary to the sample of No. 7, the basis weight was increased (33 g / m 2 ), but the required flexibility was not obtained.
[0036]
Next, sample NO. Sample No. 9 was obtained by reducing the amount of softening agent added (0.05% by weight), but lacked the necessary flexibility.
[0037]
Sample No. The sample No. 10 was obtained by increasing the density (0.85 g / cm 3 ), but the required amount of oil absorption could not be obtained.
[0038]
Sample No. Sample No. 11 was obtained by adding a large amount of softening agent (120% by weight), but the softness was sufficient, but the necessary amount of fat absorption (1.0 g / m 2 ) as the reverse action. And punch power was not obtained.
[0039]
Next, sample NO. Sample No. 12 was obtained by reducing the density (0.30 g / cm 3 ), but the required amount of fat absorption (1 g / m 2 ) and punching power were not obtained. Also, good results were not obtained in terms of wiping suitability.
[0040]
Based on the above consideration, the inventor of the present application has a basis weight range of 8 to 30 g / m 2 and a density of 0.40 to 0.75 g / cm as a suitable numerical value as a cosmetic paper for wiping the skin. 3, and the addition amount of the softening agent is 0.1 to 100% by weight with respect to the fiber raw material.
[0041]
【Example】
<Example 1>
A mixed pulp of softwood and hardwood pulp (softwood pulp / hardwood pulp: 80/20) is used as a raw material, adjusted to a beating degree of 500 ml, 25 weight percent of talc having an average particle size of 1 μm, and 5 weight percent of hydroxyapatite having an average particle size of 3 μm. The pulp slurry to which was added was made with a known paper machine to obtain a decorative paper having a basis weight of 15 g / m 2 .
[0042]
<Example 2>
Mixing pulp of coniferous pulp and manila hemp pulp (conifer pulp / manila hemp pulp: 50/50) was adjusted to a beating degree of 500 ml, and 10% by weight of talc having an average particle diameter of 3 μm and 10% by weight of hydroxyapatite having an average particle diameter of 3 μm The pulp slurry to which was added was made with a known paper machine to obtain a decorative paper having a basis weight of 15 g / m 2 .
[0043]
<Example 3>
Mixing pulp of coniferous pulp and Manila hemp pulp (coniferous pulp / Manila hemp pulp: 75/25) is adjusted to a beating degree of 500 ml, and 50% by weight of talc with an average particle size of 1 μm and 20% by weight of hydroxyapatite with an average particle size of 5 μm The pulp slurry to which was added was made with a known paper machine to obtain a decorative paper having a basis weight of 20 g / m 2 .
[0044]
<Example 4>
A mixed pulp of coniferous pulp and manila hemp pulp (conifer pulp / manila hemp pulp: 70/30) is used as a raw material, adjusted to a beating degree of 500 ml, 30% by weight of talc with an average particle size of 3 μm and 50% by weight of hydroxyapatite with an average particle size of 3 μm The pulp slurry to which was added was made with a known paper machine to obtain a decorative paper having a basis weight of 15 g / m 2 .
[0045]
<Example 5>
Mixing pulp of coniferous pulp and Manila hemp pulp (coniferous pulp / Manila hemp pulp: 30/70) is adjusted to a beating degree of 500 ml, and 10% by weight of talc with an average particle size of 1 μm and 50% by weight of hydroxyapatite with an average particle size of 3 μm The pulp slurry to which was added was made with a known paper machine to obtain a decorative paper having a basis weight of 30 g / m 2 .
[0046]
<Example 6>
Mixing pulp of coniferous pulp and manila hemp pulp (conifer pulp / manila hemp pulp: 60/40) is adjusted to a beating degree of 500 ml, and 5% by weight of talc with an average particle size of 1 μm and 5% by weight of hydroxyapatite with an average particle size of 5 μm The pulp slurry to which was added was made with a known paper machine to obtain a decorative paper having a basis weight of 8 g / m 2 .
[0047]
The density, softener addition amount, softness, punching force, oil absorption, touch, wipeability, etc. of each decorative paper of Examples 1 to 6 are as shown in Table 2, and each satisfies the requirements of the present invention. However, it was recognized as good in the overall judgment.
[0048]
<Comparative Example 1>
A mixed pulp of coniferous pulp and Manila hemp pulp (coniferous pulp / Manila hemp pulp: 40/60) is used as a raw material, adjusted to a beating degree of 500 ml, hydroxyapatite 5 having an average particle diameter of 10 μm and talc of 0.3 weight percent and an average particle diameter of 5 μm. The pulp slurry to which the weight percent was added was made with a known paper machine to obtain a decorative paper having a basis weight of 5 g / m 2 .
[0049]
<Comparative Example 2>
A mixed pulp of coniferous pulp and Manila hemp pulp (coniferous pulp / Manila hemp pulp: 50/50) is used as a raw material, adjusted to a beating degree of 500 ml, 1% by weight of talc having an average particle size of 5 μm, and hydroxyapatite 0 having an average particle size of 0.3 μm The pulp slurry to which 5 weight percent was added was made with a known paper machine to obtain a decorative paper having a basis weight of 33 g / m 2 .
[0050]
<Comparative Example 3>
A mixed pulp of coniferous pulp and manila hemp pulp (conifer pulp / manila hemp pulp: 90/10) is used as a raw material, adjusted to a beating degree of 500 ml, 5 weight percent of talc having an average particle size of 0.3 μm, and hydroxyapatite 30 having an average particle size of 10 μm. The pulp slurry added with the weight percent was made with a known paper machine to obtain a decorative paper having a basis weight of 15 g / m 2 .
[0051]
<Comparative example 4>
A mixed pulp of coniferous pulp and manila hemp pulp (conifer pulp / manila hemp pulp: 40/60) is used as a raw material, adjusted to a beating degree of 500 ml, 150 weight percent of talc with an average particle size of 3 μm and 30 weight percent of hydroxyapatite with an average particle size of 3 μm The pulp slurry to which was added was made with a known paper machine to obtain a decorative paper having a basis weight of 20 g / m 2 .
[0052]
<Comparative Example 5>
Mixing pulp of coniferous pulp and Manila hemp pulp (coniferous pulp / Manila hemp pulp: 70/30) is adjusted to a beating degree of 500 ml, 10% by weight of talc having an average particle size of 5 μm, and hydroxyapatite 0.3 having an average particle size of 3 μm. The pulp slurry added with the weight percent was made with a known paper machine to obtain a decorative paper having a basis weight of 15 g / m 2 .
[0053]
<Comparative Example 6>
A mixed pulp of softwood pulp and Manila hemp pulp (softwood pulp / Manila hemp pulp: 50/50) is used as a raw material, adjusted to a beating degree of 500 ml, 100% by weight of talc with an average particle size of 3 μm and 120% by weight of hydroxyapatite with an average particle size of 3 μm The pulp slurry to which was added was made with a known paper machine to obtain a decorative paper having a basis weight of 15 g / m 2 .
[0054]
The density, softener addition amount, softness, punching force, fat absorption, touch, wipeability, etc. in each decorative paper of Comparative Examples 1 to 6 are as shown in Table 2, and those of each comparative example are as follows. Any of the items did not satisfy the requirements of the present invention, and as a result, good evaluation could not be obtained even in comprehensive judgment.
[0055]
【The invention's effect】
As is clear from the above description, the cosmetic paper for wiping the skin of the present invention has sufficient flexibility in addition to the necessary sebum absorption action, has excellent usability, and is manufactured at a low cost. There is a possible effect.
[0056]
[Table 2]
[Brief description of the drawings]
FIG. 1 is an apparatus diagram used for measuring the adsorption rate of lipid peroxide.
[Explanation of symbols]
1 ... Column.
Claims (4)
前記填料がヒドロキシアパタイトおよびタルクであり、
ＪＩＳＰ−８１２４による坪量が８〜３０ｇ／ｍ2であり、密度が０．４０〜０．７５ｇ／ｃｍ3であり、上記柔軟剤の添加量が上記繊維原料に対して０．１〜１００重量％であり、
ＪＡＰＡＮＴＡＰＰＩ−Ｔ４９８「ハンドルオメーター法」による柔らかさが３０ｍＮ未満、下記擬似吸脂量測定法による吸脂量が１ｇ／ｍ ２ 以上であることを特徴とする皮膚清拭用化粧用紙。
擬似吸脂量測定法
印刷適性試験機の胴の表面に２１ｃｍ×２５ｃｍの試料片を粘着テープなどで固定して有効面積１９ｃｍ×１８ｃｍとし、上記印刷適性試験機の印刷ロールに油液（ヒマシ油８０重量％＋ベンジルアルコール２０重量％）０．５ｍｌを膜厚４．８μｍとなるように均一に塗布した上、上記胴と印刷ロールとのニップ幅を５ｍｍとして転写回転速度３０ｒｐｍで１回転させて、上記油液を上記試料に転写させる。その後に、転写後の有効面積分の試料片の重量から転写前の有効面積分の紙の重量を差分した値（数１）に基づいて、試料１ｍ２あたりの吸脂量とする。
The filler is hydroxyapatite and talc;
The basis weight according to JISP-8124 is 8-30 g / m 2 , the density is 0.40-0.75 g / cm 3 , and the amount of the softener added is 0.1-100 wt. % der is,
A cosmetic paper for wiping the skin characterized by having a softness by JAPANTAPPI-T498 “handle ohmmeter method” of less than 30 mN and a fat absorption by the following pseudo fat absorption measurement method of 1 g / m 2 or more .
Pseudo oil absorption measurement method A 21 cm x 25 cm sample piece is fixed to the surface of the cylinder of a printability tester with an adhesive tape or the like to make an effective area of 19 cm x 18 cm, and an oil liquid (castor oil) is placed on the printing roll of the printability tester. (80% by weight + 20% by weight of benzyl alcohol) 0.5 ml was uniformly applied to a film thickness of 4.8 μm, and the nip width between the cylinder and the printing roll was set to 5 mm, and rotated once at a transfer rotational speed of 30 rpm. The oil liquid is transferred to the sample. Thereafter, based on a value (Equation 1) obtained by subtracting the weight of the paper for the effective area before transfer from the weight of the sample piece for the effective area after transfer, the amount of oil absorption per 1 m 2 of the sample is obtained.
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| JP2001140933A JP4668456B2 (en) | 2001-05-11 | 2001-05-11 | Cosmetic paper for skin cleansing |
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| JP2001140933A JP4668456B2 (en) | 2001-05-11 | 2001-05-11 | Cosmetic paper for skin cleansing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5427339B2 (en) * | 2006-09-28 | 2014-02-26 | 大王製紙株式会社 | Chemical tissue-containing tissue paper |
| JP4916832B2 (en) * | 2006-09-29 | 2012-04-18 | 大王製紙株式会社 | Sanitary paper |
| JP2008188072A (en) * | 2007-01-31 | 2008-08-21 | Daio Paper Corp | Dry type skin cleaning sheet |
| JP5558116B2 (en) * | 2009-01-07 | 2014-07-23 | 株式会社イシダ美容研究所 | Facial wash paper and its manufacturing method |
| JP5766964B2 (en) * | 2011-01-25 | 2015-08-19 | 株式会社 吉井商店 | Oil blotting paper and its manufacturing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS6327411A (en) * | 1986-07-22 | 1988-02-05 | Shiseido Co Ltd | Dust preparation for skin external use |
| JP2613488B2 (en) * | 1989-04-21 | 1997-05-28 | 旭光学工業株式会社 | Functional paper |
| JP2996319B2 (en) * | 1991-12-03 | 1999-12-27 | 河野製紙株式会社 | Tissue paper with high moisture content |
| JPH09224868A (en) * | 1996-02-22 | 1997-09-02 | Daifuku Seishi Kk | Antimicrobial tissue and production thereof |
| JP3019249B2 (en) * | 1996-06-14 | 2000-03-13 | 大福製紙株式会社 | Highly oil-absorbing cosmetic fat removing paper and method for producing the same |
| JPH11127955A (en) * | 1997-10-29 | 1999-05-18 | Oike Ind Co Ltd | Tissue |
| JP3875781B2 (en) * | 1997-11-10 | 2007-01-31 | 大福製紙株式会社 | Oil-blowing paper for makeup and method for producing the same |
| JP2000139755A (en) * | 1998-11-12 | 2000-05-23 | Miki Tokushu Seishi Kk | Sebum-wiping paper and its manufacture |
| JP4936583B2 (en) * | 2000-08-02 | 2012-05-23 | 大王製紙株式会社 | Decorative paper |
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