JP2004016560A - Cleaning sheet - Google Patents

Cleaning sheet Download PDF

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Publication number
JP2004016560A
JP2004016560A JP2002177239A JP2002177239A JP2004016560A JP 2004016560 A JP2004016560 A JP 2004016560A JP 2002177239 A JP2002177239 A JP 2002177239A JP 2002177239 A JP2002177239 A JP 2002177239A JP 2004016560 A JP2004016560 A JP 2004016560A
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JP
Japan
Prior art keywords
fatty acid
cleaning sheet
weight
acid ester
wiping
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.)
Pending
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JP2002177239A
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Japanese (ja)
Inventor
Teruo Arai
新井 輝夫
Emi Koide
小出 恵美
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asahi Kasei Corp
Original Assignee
Asahi Kasei Life and Living Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Asahi Kasei Life and Living Corp filed Critical Asahi Kasei Life and Living Corp
Priority to JP2002177239A priority Critical patent/JP2004016560A/en
Publication of JP2004016560A publication Critical patent/JP2004016560A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a cleaning sheet which has safety characteristics used for washing oily stains in the circumference of the kitchen, elimination of stains, wiping residues, and the usability of an excellent feel. <P>SOLUTION: It is characterized by a nonwoven fabric with a chemical which contains 1-10 wt.% polyglycerol fatty acid ester with a 50 wt.% of triglycerol fatty acid monoester ratio of a 8-22C fatty acid and 0.1 to 3.0 wt.% of a glycerol mono fatty acid ester consisting of at least one of the 8-12C fatty acid esters and a glycerol. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は清掃用シートに関する。更に詳しくは台所周辺や台所用品の油汚れを清掃するのに適した洗浄性、安全性、優れた使用感を兼ね備えた清掃用シートに関する。
【0002】
【従来の技術】
調理によって飛び散った油汚れや、それが酸化して固着した油汚れは、一般家庭や、調理厨房で清掃しにくい汚れの一つであり、一般に界面活性剤、アルカリ剤、溶剤を配合した洗浄剤が用いられていたり、洗浄液を紙製のシートに含浸させたウエットクリーナーが使用されたりしている。同時に、台所や厨房周りでは食生活の安全性を保つために汚れの洗浄とともに、より安全性の高い洗浄剤が求められている。
【0003】
従来より人体洗浄用や、食品、食品容器の洗浄作業用に、安全性の高い洗浄剤として、ポリグリセリン脂肪酸エステルが使用されており、たとえば、特開平9−217088号公報にはモノエステル体の含有量の高いポリグリセリンモノ脂肪酸エステルが頭髪の洗浄用に有効であることが開示されている。また、特開2002−248192号公報には安全性の高い洗浄剤組成物として主としてトリグリセリンの脂肪酸エステルからなる洗浄剤組成物の例が開示されている。しかしながら、油で汚れた台所の周辺、たとえば、壁、ガスレンジ、カウンター、あるいは、台所家電用品、たとえば、冷蔵庫や、炊飯器に付着した油汚れの清掃に適した清掃用具についてはなんら開示されていない。
【0004】
一方、清掃用具の一つとして洗浄成分を不織布等の布帛に含浸させた清掃用シートが知られているが、従来からその製造工程や使用時において落下菌等、空気中に存在する細菌類やカビ等の真菌類が混入し、これらが保管中に基材である不織布上で繁殖することがある。この状態で清拭操作を行うと拭き取り面をかえって汚染してしまうという問題点があった。このため、以前からウエットティッシュにはパラベン等が添加され、基材上で細菌類やカビ等の真菌類の繁殖を防止していた。しかしながら、パラベンは、細菌類やカビ等の真菌類の繁殖抑制効果が高いものの、消費者の安全意識が高まるにつれて、より安全性が高く、繁殖抑制効果が高い薬剤が求められていた。パラベンを使用せずに細菌類やカビ等の真菌類の繁殖を抑制するには、通常のウエットティッシュに除菌剤や殺菌剤、速乾剤として使用されるアルコールの濃度を高くすることが考えられる。しかし、アルコール濃度が高いと、皮膚が弱い人が使用した場合、皮脂を必要以上に除去し、手荒れを起こしたり、刺激臭が強かったりと言う問題点があった。
【0005】
【発明が解決しようとする課題】
本発明の目的は安全性が高く、台所周りの油汚れの洗浄の効果が高く、かつ、優れた使用感を兼ね備えた清掃用シートを提供することである。
【0006】
【課題を解決するための手段】
本発明者らは、前記課題を解決するために鋭意検討した結果、特定のポリグリセリン脂肪酸エステルと、特定のグリセリン脂肪酸エステルからなる薬液を含む清掃用シートが上記の課題を解決することを見いだし、本発明をなすに至った。すなわち、本発明は、
(1)炭素数が8から22である脂肪酸のトリグリセリン脂肪酸モノエステル比率が50重量%以上であるポリグリセリン脂肪酸エステルを1〜10重量%、炭素数が8から12である脂肪酸の少なくとも1つとグリセリンからなるグリセリンモノ脂肪酸エステルを0.1〜3.0重量%含む薬液が不織布に付与されている清掃用シート、(2)薬液が、さらにエタノールを1〜30重量%含む(1)に記載の清掃用シート、および、(3)不織布の拭き取り面の面積率20%以上が、単糸径0.2〜5.0μmの繊維である極細繊維を含む素材である(1)または(2)に記載の清掃用シートである。
【0007】
【発明の実施の形態】
以下、本発明について、特にその好ましい実施態様を中心に、詳細に説明する。
本発明の洗浄成分として用いられるポリグリセリン脂肪酸エステルは、脂肪酸とポリグリセリンと反応物からなり、脂肪酸の炭素数は、8から22の範囲である。直鎖状、分岐状および、飽和、不飽和の脂肪酸の中から、1種、または、2種以上の混合物を用いることができる。例えば、カプリル酸、カプリン酸、ラウリン酸などが挙げられる。脂肪酸の炭素数が22を越えると粘度が高くなりすぎて取り扱いが困難になり、一方、炭素数が8未満では、十分な洗浄効果が得られないと同時に特有の臭気を発生し、本発明の使用には適さない。
【0008】
また、ポリグリセリン脂肪酸エステル中にはポリグリセリンの縮合度が3のポリグリセリンと脂肪酸のモノエステル比率が50重量%のものが用いられる。このようなポリグリセリン脂肪酸モノエステル含有量の高いポリグリセリン脂肪酸エステルは、例えば特開平9−217088号公報に記載のように、グリシドールと脂肪酸との付加重合によって得ても良いし、特開2002−60783号公報に記載のように、あらかじめポリグリセリン中のトリグリセリン含有量を、減圧蒸留や、分子蒸留などの定法により高めたポリグリセリンと脂肪酸を反応させた後、減圧蒸留や、分子蒸留などの定法によりさらに、分取することによって得てもよい。トリグリセリン脂肪酸モノエステルの含有量が50重量%未満では、反応後のポリグリセリン脂肪酸エステルに十分な洗浄力が得られない。なお、トリグリセリン脂肪酸モノエステルの含有量は、高速液体クロマトグラフィーを用いて測定される。
【0009】
本発明の清掃用シートに含まれる薬液にはポリグリセリンモノ脂肪酸エステルが1〜10重量%含有されなければならない。1重量%未満では十分な洗浄作用が得られず、一方、10重量%以上では、洗浄液の泡立ちが多かったり、洗浄液のぬめり感が高すぎたりして、好ましくない。
次に、本発明に用いられるグリセリンモノ脂肪酸エステルについて説明する。グリセリンモノ脂肪酸エステルは、食品添加物として広く安全性が高いことが知られており、本発明では清掃用シートの防かび性を付与するために加えられる。炭素数が8から12である脂肪酸のグリセリンモノエステルが用いられる。炭素数が8未満では防腐効果が小さく、一方12を越えると泡立ちが大きくなり好ましくない。また、グリセリンモノ脂肪酸エステルの含有量は、0.1から3重量%の範囲で用いられる。0.1重量%未満では十分な防腐効果が得られず、一方、3.0重量%を越えると、洗浄液の泡立ちやぬめり感が高すぎたり、溶解性が悪くなったりして好ましくない。
【0010】
本発明の清掃用シートに含まれる薬液には、手触りと、拭き残りをさらに良好に保つために1から30重量%のエタノールを含有させることが好ましい。手触りや、拭き残りの改良の点で1重量%以上、アルコール特有の臭気を抑制する観点から30重量%以下が好ましい。
次に、本発明に用いられる不織布について説明する。本発明に用いられる不織布の素材は限定されるものではない。例えば、コットン、ビスコースレーヨン、キュプラレーヨン等のセルロース系の繊維素材、アクリル、ポリエステル、ナイロン、ポリプロピレン等の合成繊維系の素材等が用途に応じて用いられる。また、これらの素材が混合されていてもよい。素材の混合の状態も限定されず、繊維同士が混合されていてもよいし、層状に複合されていてもよい。
【0011】
また、本発明における不織布を構成する繊維の繊度も特に限定されないが、拭き取り面が極細繊維を含む素材で不織布を構成すれば、清掃用シートの表面積が増加し、拭き取り性が向上するので好ましい。特にアクリル系の割繊、フィブリル化した超極細繊維を用いれば、拭き取り性も向上し、親水性も向上するのでより好ましい。
ここで、拭き取り面が極細繊維を含む素材のなかでも拭き取り面となる不織布表面のうち、面積率20%以上が単糸径0.2〜5.0μmの繊維であることが好ましい。単糸径が5μm以下であれば油分や固形汚れ等の拭き取り効果に優れ、0.2μm以上であれば摩擦による単繊維の切断を抑えることができる。より好ましくは面積率40%以上が単糸径0.3〜4.0μmの繊維であり、最も好ましくは面積率60%以上が単糸径0.35〜3.5μmの繊維である。ここでいう単糸径とは、単繊維の断面が円状の場合の直径をいい、断面が楕円状の場合は長径を、扁平の場合は最大幅がこれに相当する。面積率は数式(1)で与えられる。
面積率(%)=(単糸径が所定範囲である繊維が拭き取り面に占める面積)×100/(拭き取り面に占める全繊維の面積)     (1)
【0012】
本発明の清掃用シートに用いる不織布の目付は15〜200g/mが好ましい。不織布の目付が15g/m未満では、清拭中に不織布が破れることがある。また、目付が200g/mを越えると、不織布が地厚となりすぎて拭き取り面へ沿いにくくなり、拭き取り性が低下することがある。
清掃用シートの製法としては、一般に用いられているように、一定のサイズにカットし、これに、上記の薬液を一定量含浸させることで作製すればよい。含浸量としては不織布シートに対して、(薬液の重量)/(不織布シートの重量)が1.0〜3.0であることが好ましい。洗浄性の点で含浸量比は1.0以上、薬液が拭き跡として残るのを防止する点で含浸量比は3.0以下が好ましい。
なお、本願の清掃用シートには、本願の効果を損なわない範囲で他の防腐剤、香料等を添加することができる。
【0013】
本発明について、実施例に基づいて以下具体的に説明する。但し、本発明は以下の実施例でなんら制限されるものではない。
なお、汚れ落とし性、拭き残り性、手触り、防カビ性の評価は下記に示す方法で行った。
(1)汚れ落とし性
市販のサラダ油0.3gを5×20cmのステンレス板に塗布したのち、130℃のオーブンで3時間及び、6時間加熱し、食用油汚れが固着した試験板をそれぞれ作製する。試験板上を5×2cmの面積の清掃用シートに500gの荷重をかけながら10往復させて汚れ落としを行った。目視にて汚れ落ちの面積を判定し、面積に応じて4段階の評価を行った。
◎:ほとんど汚れを落とした。
○:わずかに汚れが残ったがほとんど気にならない。
△:若干汚れのこりがあった。
×:大部分の汚れが落ちなかった。
××:汚れがほとんど落ちなかった。
【0014】
(2)拭き残り性評価方法
得られた清掃用シートでパネラーに拭き跡等のないきれいなステンレスの表面を5往復清拭させ、表面を乾燥させた。パネラーが拭き取り面を観察して、拭き残りについて3段階で評価した。
5:ほとんど拭き残りが目立たない、又は拭き残りがあっても気にならない。
3:若干拭き残りがあり、拭き残りが少し気になる。
1:拭き残りがあるため、拭き残りが気になり、乾拭きが必要である。
パネラーは20名とし、その平均点を評価結果とした。
【0015】
(3)手触り
得られた清掃用シートでパネラーにステンレスの表面を清拭さる際の手触りについて3段階で評価した。
5:ほとんどべたつきが気にならない、又はべたつきがあっても気にならない。
3:若干べたつきがあり、手触りが少し気になる。
1: べたつきが気になり、手触りが悪い。
パネラーは20名とし、その平均点を評価結果とした。
【0016】
(4)防カビ性評価方法
試料の防カビ性の評価は、ハロー法(JIS L1902−1990)に準拠して行った。すなわち、黒カビの保存用のサブロー寒天培地(10ml)に2週間生育した黒カビ(IFO−4414)の試験管1本分の分生子を菌糸と共に胞子分散剤(0.005%ジオクチルスルホコハク酸)10mlに分散させ、滅菌脱脂綿で濾過し、溶解して45℃に保った100mlのサブロー寒天培地に加え、シャ−レ1枚当り10ml分注して平板培地を作製した。
得られた清掃用シートを2cm×2cmの大きさに切り、作製した培地の上におき、25℃で7日間の培養を行った。評価は、試料の周囲に生育阻止帯(ハロ−)の形成されたものを(−−)、試料上で菌の生育が認められなかったものを(−)、試料上にまで菌の生育の認められたものを(+)とした。
【0017】
【参考例1】
5kgのグリセリンに0.5重量%の水酸化ナトリウムを加え250℃の温度下で3時間の重合反応を行い、5mmHgの減圧下に蒸留、および分子蒸留によりグリセリンおよび、ジグリセリンを除去した。得られたポリグリセリン300gに60gのラウリン酸を加え定法によりエステル化したのち、50%飽和食塩水で処理して未反応のポリグリセリンを除去し、ポリグリセリン脂肪酸エステルを得た。液体クロマトグラフィーにより、メタノールを溶剤として、カラムにShodex  Asahipak GS−320HQを用いて210nmの吸収により組成分析を行った。トリグリセリンモノラウリン酸エステルの含有量は62%であった。
【0018】
【参考例2】
参考例1で、脂肪酸としてカプリル酸を60g用いた以外は参考例1と同様にしてポリグリセリン脂肪酸エステルを得た。トリグリセリンモノカプリル酸エステルの含有量は68%であった。
【0019】
【参考例3】
参考例1で、グリセリンの重合反応を5時間とし、ラウリン酸の量を200gとした以外は参考例1と同様にしてポリグリセリン脂肪酸エステルを得た。トリグリセリンモノラウリン酸エステルの含有量は54%であった。
【0020】
【参考例4】
参考例1で、グリセリンの重合反応を24時間とし、減圧蒸留によりグリセリンを取り除いたポリグリセリンを得た。得られたポリグリセリン300gにラウリン酸70gを加えてエステル化してポリグリセリン脂肪酸エステルを得た。トリグリセリンモノラウリン酸エステルの含有量は17%であった。
【0021】
【実施例1】
参考例1で得られたポリグリセリン脂肪酸エステル5重量%、およびグリセリンモノラウリン酸エステル(理研ビタミン(株)社製ポエムM−200)1重量%となるように精製水に溶解させた薬液を作製した。レーヨンを主体とする不織布(オーミケンシ(株)社製(PXD7055M:目付55g/m))に対し、2倍重量の薬液を含浸させて、清掃用シートを作製した。汚れ落とし性、拭き残り性、手触り、防カビ性の評価結果を表1に示す。
【0022】
【実施例2〜4】
ポリグリセリン脂肪酸エステル、グリセリンモノラウリン酸エステルの量を表1に示した量とした以外は実施例1と同様にして清掃用シートを作製した。評価結果を表1に示す。
【0023】
【実施例5】
参考例2で得られたポリグリセリン脂肪酸エステルを用いた以外は実施例1と同様にして清掃用シートを作製した。評価結果を表1に示す。
【0024】
【実施例6】
不織布としてアクリル極細繊維90%とポリエステル繊維10%からなる不織布(旭化成(株)製(シャレリアC1030:目付30g/m))を用いた以外は実施例1と同様にして清掃用シートを作製した。評価結果を表1に示す。
【0025】
【実施例7〜9】
ポリグリセリン脂肪酸エステル、グリセリンモノラウリン酸エステルの量を表1に示した量とした以外は実施例6と同様にして清掃用シートを作製した。評価結果を表1に示す。
【0026】
【実施例10】
参考例3で得られたポリグリセリン脂肪酸エステルを用いた以外は実施例6と同様にして清掃用シートを作製した。評価結果を表1に示す。
【0027】
【実施例11〜12】
ポリグリセリン脂肪酸エステル、グリセリンモノラウリン酸エステル、およびエタノールの量を表1に記載のとおりとした以外は、実施例6と同様にして清掃用シートを作製した。評価結果を表1に示す。
【0028】
【実施例13〜14】
ポリグリセリン脂肪酸エステル、グリセリンモノラウリン酸エステル、およびエタノールの量を表1に記載のとおりとした以外は、実施例1と同様にして清掃用シートを作製した。評価結果を表1に示す。
【0029】
【比較例1】
ポリグリセリン脂肪酸エステル、グリセリンモノラウリン酸エステルの量を表1に示した量とした以外は実施例1と同様にして清掃用シートを作製した。評価結果を表1に示す。
【0030】
【比較例2〜4】
ポリグリセリン脂肪酸エステル、グリセリンモノラウリン酸エステルの量を表1に示した量とした以外は実施例6と同様にして清掃用シートを作製した。評価結果を表1に示す。
【0031】
【比較例5】
参考例4で得られたポリグリセリン脂肪酸エステルを用いた以外は実施例1と同様にして清掃用シートを作製した。評価結果を表1に示す。
【0032】
【表1】

Figure 2004016560
【0033】
【発明の効果】
本発明のにより、食品を取り扱う台所周りでの使用に対して安全性が高い、かつ、固着した油汚れの洗浄の効果高さと拭き残り、手触りに優れた使用感を兼ね備えた清掃用シートの提供が可能になった。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a cleaning sheet. More particularly, the present invention relates to a cleaning sheet having a cleaning property, a safety property, and an excellent feeling of use suitable for cleaning oil stains around the kitchen and kitchen utensils.
[0002]
[Prior art]
Oil stains scattered by cooking and oil stains oxidized and fixed are one of the stains that are difficult to clean in ordinary households and cooking kitchens, and are generally detergents containing surfactants, alkali agents, and solvents. Or a wet cleaner in which a paper sheet is impregnated with a cleaning liquid. At the same time, in the kitchen and around the kitchen, there is a need for a cleaner that is more safe in addition to cleaning dirt to maintain the safety of eating habits.
[0003]
Hitherto, polyglycerin fatty acid esters have been used as a highly safe cleaning agent for washing the human body, for cleaning foods and food containers, and for example, Japanese Patent Application Laid-Open No. 9-217088 discloses a monoester compound. It is disclosed that polyglycerol monofatty acid esters having a high content are effective for washing hair. Japanese Patent Application Laid-Open No. 2002-248192 discloses an example of a highly safe detergent composition mainly composed of a fatty acid ester of triglycerin. However, there is no disclosure of a cleaning tool suitable for cleaning oily soil around a kitchen, for example, a wall, a gas range, a counter, or a kitchen appliance, such as a refrigerator or a rice cooker. Absent.
[0004]
On the other hand, a cleaning sheet in which a cleaning component is impregnated into a cloth such as a nonwoven fabric is known as one of the cleaning tools. However, bacteria that exist in the air, such as falling bacteria in the manufacturing process and during use, have been conventionally used. Fungi such as mold may be mixed in and may propagate on the nonwoven fabric as a base material during storage. When the wiping operation is performed in this state, there is a problem that the wiping surface is changed and the surface is contaminated. For this reason, parabens and the like have been added to wet tissues to prevent the growth of fungi such as bacteria and mold on the substrate. However, although paraben has a high effect of suppressing the growth of fungi such as bacteria and fungi, as the safety consciousness of consumers increases, a drug having higher safety and a higher effect of suppressing the reproduction has been required. In order to suppress the growth of fungi such as bacteria and mold without using parabens, it is conceivable to increase the concentration of alcohol used as a disinfectant, fungicide, and quick-drying agent in ordinary wet tissues. Can be However, when the alcohol concentration is high, there is a problem that, when used by a person with weak skin, the sebum is removed more than necessary, resulting in rough hands and a strong irritating odor.
[0005]
[Problems to be solved by the invention]
An object of the present invention is to provide a cleaning sheet that is highly safe, has a high effect of cleaning oil stains around the kitchen, and has an excellent feeling of use.
[0006]
[Means for Solving the Problems]
The present inventors have conducted intensive studies to solve the above-described problems, and found that a specific polyglycerin fatty acid ester and a cleaning sheet containing a drug solution composed of a specific glycerin fatty acid ester solve the above-described problems, The present invention has been made. That is, the present invention
(1) 1 to 10% by weight of a polyglycerol fatty acid ester having a triglycerin fatty acid monoester ratio of 50% by weight or more of a fatty acid having 8 to 22 carbon atoms, and at least one fatty acid having 8 to 12 carbon atoms. A cleaning sheet in which a non-woven fabric is provided with a chemical solution containing 0.1 to 3.0% by weight of glycerin monofatty acid ester composed of glycerin, (2) The chemical solution further contains 1 to 30% by weight of ethanol. (3) The cleaning sheet of (1) or (2), wherein the area ratio of the wiping surface of the nonwoven fabric is 20% or more and contains ultrafine fibers that are fibers having a single yarn diameter of 0.2 to 5.0 μm (1) or (2). 4. The cleaning sheet according to (1).
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail with a particular emphasis on its preferred embodiments.
The polyglycerin fatty acid ester used as the cleaning component of the present invention comprises a fatty acid and a reaction product of polyglycerin, and the fatty acid has a carbon number in the range of 8 to 22. One or a mixture of two or more of linear, branched, and saturated and unsaturated fatty acids can be used. For example, caprylic acid, capric acid, lauric acid and the like can be mentioned. When the fatty acid has more than 22 carbon atoms, the viscosity becomes too high and handling becomes difficult. On the other hand, when the fatty acid has less than 8 carbon atoms, a sufficient odor cannot be obtained, and at the same time, a specific odor is generated. Not suitable for use.
[0008]
In the polyglycerin fatty acid ester, a polyglycerin having a polyglycerin condensation degree of 3 and a monoester ratio of fatty acid of 50% by weight is used. Such a polyglycerol fatty acid monoester having a high content of polyglycerin fatty acid monoester may be obtained by addition polymerization of glycidol and a fatty acid, as described in JP-A-9-217088, for example. As described in Japanese Patent No. 60783, after a triglycerin content in polyglycerin is increased by a conventional method such as vacuum distillation or molecular distillation, polyglycerin is allowed to react with a fatty acid, and then vacuum distillation or molecular distillation. It may also be obtained by fractionation by a conventional method. When the content of the triglycerin fatty acid monoester is less than 50% by weight, sufficient detergency cannot be obtained for the polyglycerin fatty acid ester after the reaction. The content of triglycerin fatty acid monoester is measured by using high performance liquid chromatography.
[0009]
The chemical solution contained in the cleaning sheet of the present invention must contain 1 to 10% by weight of polyglycerin monofatty acid ester. If the amount is less than 1% by weight, a sufficient washing action cannot be obtained, while if it is more than 10% by weight, the foaming of the washing solution is large and the slimy feeling of the washing solution is too high, which is not preferable.
Next, the glycerin monofatty acid ester used in the present invention will be described. Glycerin monofatty acid esters are widely known to be highly safe as food additives, and are added in the present invention in order to impart mold resistance to the cleaning sheet. A glycerin monoester of a fatty acid having 8 to 12 carbon atoms is used. If the number of carbon atoms is less than 8, the preservative effect is small, while if it exceeds 12, foaming is undesirably large. The content of glycerin monofatty acid ester is used in the range of 0.1 to 3% by weight. If it is less than 0.1% by weight, a sufficient antiseptic effect cannot be obtained, while if it exceeds 3.0% by weight, the foaming and slimy feeling of the cleaning solution is too high, and the solubility is unfavorably deteriorated.
[0010]
The chemical solution contained in the cleaning sheet of the present invention preferably contains 1 to 30% by weight of ethanol in order to keep the touch and the remaining wiping more satisfactorily. The content is preferably 1% by weight or more from the viewpoint of improvement in touch and remaining after wiping, and 30% by weight or less from the viewpoint of suppressing odor peculiar to alcohol.
Next, the nonwoven fabric used in the present invention will be described. The material of the nonwoven fabric used in the present invention is not limited. For example, cellulosic fiber materials such as cotton, viscose rayon and cupra rayon, and synthetic fiber materials such as acryl, polyester, nylon, and polypropylene are used depending on the application. Further, these materials may be mixed. The state of mixing the materials is not limited, and the fibers may be mixed with each other or may be composited in a layer.
[0011]
The fineness of the fibers constituting the nonwoven fabric in the present invention is not particularly limited, but it is preferable that the wiping surface is formed of a material containing ultrafine fibers, since the surface area of the cleaning sheet increases and the wiping property is improved. In particular, it is more preferable to use an acrylic split or fibrillated ultrafine fiber because the wiping property is improved and the hydrophilic property is also improved.
Here, it is preferable that the area ratio of not less than 20% is a fiber having a single yarn diameter of 0.2 to 5.0 μm in the surface of the nonwoven fabric which is the wiping surface among the materials including the ultrafine fibers. If the single yarn diameter is 5 μm or less, the effect of wiping oil and solid dirt is excellent, and if it is 0.2 μm or more, cutting of the single fibers due to friction can be suppressed. More preferably, an area ratio of 40% or more is a fiber having a single yarn diameter of 0.3 to 4.0 μm, and most preferably, an area ratio of 60% or more is a fiber having a single yarn diameter of 0.35 to 3.5 μm. Here, the single yarn diameter refers to the diameter when the cross section of the single fiber is circular, the long diameter when the cross section is elliptical, and the maximum width when the cross section is flat. The area ratio is given by Expression (1).
Area ratio (%) = (Area occupied by wiping surface of fibers having a single yarn diameter within a predetermined range) × 100 / (Area of all fibers occupying wiping surface) (1)
[0012]
The basis weight of the nonwoven fabric used for the cleaning sheet of the present invention is preferably from 15 to 200 g / m 2 . If the basis weight of the nonwoven fabric is less than 15 g / m 2 , the nonwoven fabric may be broken during wiping. On the other hand, when the basis weight exceeds 200 g / m 2 , the nonwoven fabric becomes too thick and difficult to follow the wiping surface, and the wiping properties may be reduced.
As a method for manufacturing the cleaning sheet, as is generally used, the sheet may be cut into a predetermined size and impregnated with a predetermined amount of the above-mentioned chemical solution. As the impregnation amount, (the weight of the chemical solution) / (the weight of the nonwoven fabric sheet) is preferably 1.0 to 3.0 with respect to the nonwoven fabric sheet. The impregnation ratio is preferably 1.0 or more from the viewpoint of detergency, and the impregnation ratio is preferably 3.0 or less from the viewpoint of preventing the chemical solution from remaining as wiping marks.
In addition, other preservatives, fragrances, and the like can be added to the cleaning sheet of the present application as long as the effects of the present application are not impaired.
[0013]
The present invention will be specifically described below based on examples. However, the present invention is not limited by the following examples.
In addition, evaluation of the stain removal property, the remaining property of wiping, the touch, and the antifungal property was performed by the following methods.
(1) Stain removing property After applying 0.3 g of commercially available salad oil to a 5 × 20 cm stainless steel plate, it was heated in an oven at 130 ° C. for 3 hours and 6 hours to prepare test plates to which edible oil stains adhered, respectively. . A cleaning sheet having an area of 5 × 2 cm was reciprocated 10 times while applying a load of 500 g on the test plate to remove dirt. The area of stain removal was visually determined, and a four-level evaluation was performed according to the area.
A: Almost dirt was removed.
:: Slight stains remained, but hardly noticed.
Δ: Some stains were observed.
X: Most of the dirt was not removed.
XX: Dirt was hardly removed.
[0014]
(2) Evaluation method of remaining wipeability A stainless steel surface having no trace of wiping or the like was wiped on the panel by the cleaning sheet obtained five times, and the surface was dried. The panelists observed the wiping surface and evaluated the remaining wiping in three steps.
5: The remaining wiping is hardly noticeable, or the remaining wiping does not matter.
3: There is slight wiping residue, and the wiping residue is slightly anxious.
1: Since there is a residue to be wiped, the residue to be wiped is a concern, and it is necessary to dry wipe.
There were 20 panelists, and the average score was used as the evaluation result.
[0015]
(3) Touch The touch when a stainless steel surface was wiped on a panel with the obtained cleaning sheet was evaluated in three steps.
5: Almost no stickiness or little stickiness.
3: Slightly sticky and slightly annoying to the touch.
1: The stickiness is worrisome and the touch is poor.
There were 20 panelists, and the average score was used as the evaluation result.
[0016]
(4) Evaluation method of mold resistance The evaluation of the mold resistance of the sample was performed in accordance with the halo method (JIS L1902-1990). That is, a conidia of one test tube of black mold (IFO-4414) grown on a Sabouraud agar medium (10 ml) for preserving black mold was added together with mycelium to 10 ml of a spore dispersant (0.005% dioctyl sulfosuccinic acid). It was dispersed, filtered with sterile cotton wool, dissolved and added to 100 ml of Sabouraud agar medium kept at 45 ° C., and 10 ml was dispensed per plate to prepare a plate medium.
The obtained cleaning sheet was cut into a size of 2 cm × 2 cm, placed on the prepared medium, and cultured at 25 ° C. for 7 days. In the evaluation, the growth inhibition zone (halo-) was formed around the sample (-), and the growth was not observed on the sample (-). Those recognized were rated (+).
[0017]
[Reference Example 1]
0.5 kg of sodium hydroxide was added to 5 kg of glycerin, a polymerization reaction was performed at a temperature of 250 ° C. for 3 hours, and glycerin and diglycerin were removed by distillation under reduced pressure of 5 mmHg and molecular distillation. 60 g of lauric acid was added to 300 g of the obtained polyglycerin, esterified by a conventional method, and treated with 50% saturated saline to remove unreacted polyglycerin, thereby obtaining a polyglycerin fatty acid ester. The composition was analyzed by liquid chromatography using Shodex Asahipak GS-320HQ as a column and absorption at 210 nm using methanol as a solvent. The content of triglycerin monolaurate was 62%.
[0018]
[Reference Example 2]
A polyglycerin fatty acid ester was obtained in the same manner as in Reference Example 1, except that 60 g of caprylic acid was used as the fatty acid in Reference Example 1. The content of triglycerin monocaprylate was 68%.
[0019]
[Reference Example 3]
A polyglycerin fatty acid ester was obtained in the same manner as in Reference Example 1, except that the polymerization reaction of glycerin was changed to 5 hours and the amount of lauric acid was changed to 200 g. The content of triglycerin monolaurate was 54%.
[0020]
[Reference Example 4]
In Reference Example 1, the polymerization reaction of glycerin was performed for 24 hours, and polyglycerin from which glycerin had been removed by vacuum distillation was obtained. 70 g of lauric acid was added to 300 g of the obtained polyglycerin for esterification to obtain a polyglycerin fatty acid ester. The content of triglycerin monolaurate was 17%.
[0021]
Embodiment 1
A chemical solution was prepared by dissolving the polyglycerin fatty acid ester obtained in Reference Example 1 in 5% by weight and glycerin monolaurate (Poem M-200 manufactured by Riken Vitamin Co., Ltd.) in 1% by weight in purified water. . A cleaning sheet was prepared by impregnating a non-woven fabric mainly composed of rayon (manufactured by Ohmicense Co., Ltd. (PXD7055M: basis weight 55 g / m 2 )) with twice the weight of a chemical solution. Table 1 shows the evaluation results of the property of removing dirt, the property of remaining after wiping, the feel, and the property of preventing mold.
[0022]
[Examples 2 to 4]
A cleaning sheet was prepared in the same manner as in Example 1 except that the amounts of polyglycerin fatty acid ester and glycerin monolaurate were changed to the amounts shown in Table 1. Table 1 shows the evaluation results.
[0023]
Embodiment 5
A cleaning sheet was prepared in the same manner as in Example 1 except that the polyglycerin fatty acid ester obtained in Reference Example 2 was used. Table 1 shows the evaluation results.
[0024]
Embodiment 6
A cleaning sheet was prepared in the same manner as in Example 1, except that a nonwoven fabric (90% by Asahi Kasei Co., Ltd. (Chaleria C1030; weight per unit area: 30 g / m 2 )) composed of 90% of acrylic fine fibers and 10% of polyester fibers was used as the nonwoven fabric. . Table 1 shows the evaluation results.
[0025]
Embodiments 7 to 9
A cleaning sheet was prepared in the same manner as in Example 6, except that the amounts of polyglycerin fatty acid ester and glycerin monolaurate were changed to the amounts shown in Table 1. Table 1 shows the evaluation results.
[0026]
Embodiment 10
A cleaning sheet was prepared in the same manner as in Example 6, except that the polyglycerin fatty acid ester obtained in Reference Example 3 was used. Table 1 shows the evaluation results.
[0027]
Examples 11 to 12
A cleaning sheet was produced in the same manner as in Example 6, except that the amounts of polyglycerin fatty acid ester, glycerin monolaurate, and ethanol were as shown in Table 1. Table 1 shows the evaluation results.
[0028]
Embodiments 13 and 14
A cleaning sheet was prepared in the same manner as in Example 1, except that the amounts of polyglycerin fatty acid ester, glycerin monolaurate, and ethanol were as shown in Table 1. Table 1 shows the evaluation results.
[0029]
[Comparative Example 1]
A cleaning sheet was prepared in the same manner as in Example 1 except that the amounts of polyglycerin fatty acid ester and glycerin monolaurate were changed to the amounts shown in Table 1. Table 1 shows the evaluation results.
[0030]
[Comparative Examples 2 to 4]
A cleaning sheet was prepared in the same manner as in Example 6, except that the amounts of polyglycerin fatty acid ester and glycerin monolaurate were changed to the amounts shown in Table 1. Table 1 shows the evaluation results.
[0031]
[Comparative Example 5]
A cleaning sheet was prepared in the same manner as in Example 1 except that the polyglycerin fatty acid ester obtained in Reference Example 4 was used. Table 1 shows the evaluation results.
[0032]
[Table 1]
Figure 2004016560
[0033]
【The invention's effect】
According to the present invention, there is provided a cleaning sheet which is highly safe for use around a kitchen where food is handled, and has a high effect of cleaning fixed oil stains, a remaining wipe, and an excellent feel to use. Is now possible.

Claims (3)

炭素数が8から22である脂肪酸のトリグリセリン脂肪酸モノエステル比率が50重量%以上であるポリグリセリン脂肪酸エステルを1〜10重量%、炭素数が8から12である脂肪酸の少なくとも1つとグリセリンからなるグリセリンモノ脂肪酸エステルを0.1〜3.0重量%含む薬液が不織布に付与されていることを特徴とする清掃用シート。It is composed of 1 to 10% by weight of a polyglycerin fatty acid ester having a triglycerin fatty acid monoester ratio of a fatty acid having 8 to 22 carbon atoms of 50% by weight or more, and at least one fatty acid having 8 to 12 carbon atoms and glycerin. A cleaning sheet, wherein a non-woven fabric is provided with a chemical solution containing 0.1 to 3.0% by weight of glycerin monofatty acid ester. 薬液が、さらにエタノールを1〜30重量%含むことを特徴とする請求項1に記載の清掃用シート。The cleaning sheet according to claim 1, wherein the chemical solution further contains 1 to 30% by weight of ethanol. 不織布の拭き取り面の面積率20%以上が、単糸径0.2〜5.0μmの繊維である極細繊維を含む素材であることを特徴とする請求項1または2に記載の清掃用シート。The cleaning sheet according to claim 1, wherein an area ratio of the wiping surface of the nonwoven fabric of 20% or more is a material containing ultrafine fibers that are fibers having a single yarn diameter of 0.2 to 5.0 μm.
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