JP3876367B2 - Cleaning sheet - Google Patents

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Publication number
JP3876367B2
JP3876367B2 JP33945497A JP33945497A JP3876367B2 JP 3876367 B2 JP3876367 B2 JP 3876367B2 JP 33945497 A JP33945497 A JP 33945497A JP 33945497 A JP33945497 A JP 33945497A JP 3876367 B2 JP3876367 B2 JP 3876367B2
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Prior art keywords
fiber
heat
sheet
fusible
wiping
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JPH11155791A (en
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正夫 木村
芳廣 斎藤
紀久雄 及川
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Hokuetsu Paper Mills Ltd
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Hokuetsu Paper Mills Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、清拭用シートに関する。更に詳しくは食器あるいは食材等の洗浄に用いることができ、汚れ落し効果が高く、かつ、衛生的で安全性の高い清拭用シートに関する。
【0002】
【従来の技術】
従来より、食器あるいは食材等の洗浄には亀の子タワシ、ウレタンスポンジ、金属タワシなどが使用されている。
【0003】
【発明が解決しようとする課題】
しかし、かかる亀の子タワシ、ウレタンスポンジ、、金属タワシ等は一般に繰り返し使用されるため、大腸菌等の各種細菌が増殖しやすく衛生面及び安全性の点で好ましくない。
よって、汚れ落し効果が高く、かつ、大腸菌等の増殖の心配のない衛生的でかつ安全な洗浄具の出現が強く求められていた。
【0004】
本発明者は、かかる課題を解決すべく鋭意検討を行ったところ、親水性であり所定の湿潤強度及び厚さを有する基材シートに多数のスリット状の切り込み加工を施し、使用時に該多数のスリット状の切り込み部を開いて細い帯状部分により囲繞される開口部を多数形成し得る形状である清拭用シートを使い捨て使用することにより汚れ落し効果が高く、かつ各種細菌の増殖を伴わずに衛生的でかつ安全に食器あるいは食材等の洗浄を行うことができることを見い出し本発明を完成した。
【0005】
【課題を解決するための手段】
本発明にかかる清拭用シートは、熱融着性繊維とセルロース繊維を含有し、前記熱融着性繊維同志あるいは該熱融着性繊維とセルロース繊維が繊維間結合している基材シートからなる清拭用シートであって、前記基材シートは、湿式抄造法によって抄造し、前記熱融着性繊維同志あるいは該熱融着性繊維とセルロース繊維が熱融着による繊維間結合を形成し、親水性であり、厚さが0.3mm以上で、かつ20℃の蒸留水に5分間浸漬後の繊維配向方向及びこれと直角をなす方向について測定して両者の平均を求めた湿潤引張強度(JIS P−8113に基づく測定)及び湿潤裂断長(JIS P−8113に基づく測定)のそれぞれは該湿潤引張強度が1.0kg/15mm幅以上で、該湿潤裂断長が0.3km以上であり、かつ前記基材シートに多数のスリット状の切り込みを施し、使用時に該多数のスリット状の切り込み部を開いて細い帯状部分により囲繞される開口部を多数形成し得る形状である。
【0006】
本発明にかかる清拭用シートは、基材シート中の熱融着性繊維含有率が固形分で10〜50重量%、セルロース繊維の含有率が固形分で30〜90重量%としたものである。
【0007】
また本発明にかかる清拭用シートは、熱融着性繊維として、ポリエステル系繊維、ビニロン系繊維、ポリオレフィン系繊維の内の少なくとも1種類よりなるものである。
【0008】
本発明の清拭用シートにかかる基材シート中の熱融着性繊維は、熱融着機能を発現するのに十分な温熱を与えた際、該熱融着性繊維同志あるいは該熱融着性繊維とセルロース繊維等との間に熱融着による繊維間結合を形成し得るものであれば特にその種類を限定するものではない。
【0009】
ただし、熱融着機能の発現のしやすさ、あるいは経済性等を考慮すると、ポリエステル系熱融着性繊維、ビニロン系熱融着性繊維あるいはポリエチレン繊維、ポリプロピレン繊維等のポリオレフィン系繊維などの中から少なくとも1種類を選択するのが好ましい。
【0010】
かかる熱融着性繊維の含有率は固形分で10〜50重量%とするのが好ましく、さらに好ましくは15〜40重量%である。該含有率が10重量%未満では所定の湿潤引張強度あるいは湿潤裂断長が得られないことがあり得る。反対に50重量%を超えた場合は熱融着性繊維の種類によっては十分な親水性あるいは柔軟性が得られなくなることがあり得る。
【0011】
本発明の清拭用シートにかかる基材シート中のセルロース繊維としては針葉樹系あるいは広葉樹系の化学パルプ、セミケミカルパルプ等の木材パルプ、麻パルプあるいは各種古紙、リンター、ケナフなどの中から選ばれる1種類あるいは2種類以上を併用して使用することができる。親水性向上の点でリンターあるいはマーセル化処理を施したパルプを用いるのがより好ましい。
【0012】
かかるセルロース繊維の含有率は、固形分で30〜90重量%とするのが好ましく、さらに好ましくは40〜80重量%である。該含有率が30重量%未満では十分な親水性あるいは柔軟性が得られなくなることがあり得る。反対に90重量%を超えた場合、所定の湿潤引張強度あるいは湿潤裂断長が得られないことがあり得る。
【0013】
本発明の清拭用シートにかかる基材シートを20℃の蒸留水に5分間浸漬した後にJIS P−8113に基づいて測定した湿潤引張強度は、繊維配向方向及びこれと直角をなす方向の平均で1.0kg/15mm幅以上、好ましくは1.5kg/15mm幅以上、さらに好ましくは2.0kg/15mm幅以上でなければならない。また、該湿潤引張強度から求めた湿潤裂断長は0.3km以上、好ましくは0.5km以上、さらに好ましくは1km以上でなければならない。前記した湿潤引張強度が0.5kg/15mm幅未満もしくは前記した湿潤裂断長が0.3km未満のときは、洗浄時の耐久性が不十分でシートが破断したり破れたりあるいはシート表面からの紙質の脱落等が発生しやすくなる。
【0014】
本発明の清拭用シートにかかる基材シートの厚さは0.3〜2mm、好ましくは0.5〜1mmでなければならない。該厚さが0.3mm未満では強度が不足し洗浄時の耐久性が不十分となりやすい。反対に2mmを超えた場合は、柔軟性が不足し、手に握った際の手触り感が悪化しやすく、また、狭い所に挿入しにくくなるなど使い勝手も悪化しやすい。0.5〜1mm厚の場合に手触り感及び握った際のボリューム感が最も良好となる。
【0015】
本発明の清拭用シートにかかる基材シートの製造は、湿式抄造法による。すなわち、本発明の清拭用シートにかかる基材シートを湿式抄造法により製造するには熱融着性繊維とセルロース繊維の所定量を含有する原料スラリーを調成し通常の抄造法により抄造すればよい。
【0016】
抄造については、通常の長網、円網あるいは傾斜網等の抄造網上に原料スラリーを供給し、濾過、脱水した後、圧搾・乾燥すればよい。また、必要に応じて各種コンビネーション網や多層円網あるいは各種ラミネーターなどにより、紙層を2層以上重ね合わせてもよい。
なお、乾燥の際、配合した熱融着性繊維が熱融着機能を発揮するのに十分な温熱条件を与えることにより、熱融着性繊維同志あるいは熱融着性繊維とセルロース繊維等との間に熱融着による繊維間結合を形成せしめることが望ましいが、場合によっては熱カレンダー等の後加工で熱融着機能を発現せしめてもよい。
【0017】
かかる乾燥あるいは後加工によって、シートは十分に熱処理される結果、細菌等の付着量を基本的にきわめて少なくできるが、必要に応じて各種抗菌処理を施してもよい。
また、必要に応じて、乾燥または湿潤紙力増強剤、親水化剤、各種合成繊維または着色のための色顔料もしくは染料などを配合せしめてもよい。
【0018】
このようにして製造した基材シート1から、本発明の清拭用シートを得るには、該基材シート1にハニカム形状賦形用等の多数のスリット状の切り込み2を施せばよい(図1参照)。多数のスリット状の切り込み2の形状については特に限定しないが、使用時に手で引っぱって多数のスリット状の切り込み部を開き(図2参照)、ハニカム状等の形状にした際に細い帯状部分により囲繞される開口部を多数形成し得る形状とし、その細い帯状部分により形成される多数の角部により、食器や食材等の被清拭材表面への研磨効果が向上するとともに、手で握るときに指でつかみやすく使用感の良い形状となる必要がある。
【0019】
さらに、本発明の清拭用シートにガラスビーズ、シラスなどの研磨粒子を含有せしめることによりさらに強力な汚れ落し効果を持たせることも可能である。
【0020】
【実施例】
次に、本発明を以下の実施例に基づいてさらに具体的に説明する。
本実施例中、各項目の測定は次の方法によった。
▲1▼ シートの厚さ:JIS P−8118
▲2▼ シートの密度:JIS P−8118
▲3▼ シートの引張強度:JIS P−8113(ただし、繊維配向方向とこれと直角をなす方向について測定し、両者の平均を求めた。)
▲4▼ シートの裂断長:上記の▲1▼ シートの厚さ、▲2▼ シートの密度及び▲3▼ シートの引張強度より

Figure 0003876367
で求めた。
【0021】
▲5▼ シートの湿潤引張強度:20℃蒸留水5分浸漬後にJIS P−8113によって測定した(ただし、繊維配向方向とこれと直角をなす方向について測定し、両者の平均を求めた。)。
▲6▼ シートの湿潤裂断長:上記の▲1▼ シートの厚さ、▲2▼ シートの密度及び▲5▼シートの湿潤引張強度より
Figure 0003876367
で求めた。
【0022】
▲7▼ 清拭試験:長さ30cm、幅25cmの清拭用シートを手で引っぱり多数のスリット状の切り込み部を開き、ハニカム状を呈しせしめた後、手でにぎりやすいように4つ折り乃至8つ折りにして、水道水中に浸してから、亀の子タワシやスポンジタワシによる通常の清拭作業に準じた方法で、御飯粒の付いた食器、カレーの付いた食器、油の付いた食器、ガラスコップ、まな板、及び鍋釜について清拭を実施し、汚れの落ち具合、及び清拭用シートの破断、破れ、あるいは表面からの紙質の脱落の有無等について観察した。
なお、評価は次に示す評価基準に基づいて行った。
◎: 汚れが大変よく落ちる。使用感も良好で清拭用シートの破断、破れ、表面からの紙質の脱落も認められない。
○: 汚れがよく落ちる。使用感も概ね良好で清拭用シートの破断、破れ、表面からの紙質の脱落もほとんど認められない。
△: 汚れは比較的よく落ちる。
×: 汚れの落ちは不十分。場合によって、清拭用シートの破断、破れ、表面からの紙質の脱落が発生する。
【0023】
▲8▼ 細菌付着量検査
食品衛生試験法に準拠し、一般細菌数をスパイラルプレーティング法にて、大腸菌群を混釈法にて、黄色ブドウ球菌を直接法にて、サルモネラ菌、腸炎ビブリオ及び病原性大腸菌O−157を増菌培養法にてそれぞれ測定した。
【0024】
実施例1
マーセル化を施した針葉樹系晒硫酸塩パルプのビータ叩解原料と別途調成したポリエステル系熱融着性繊維(融点110℃、1.5デニール、カット長5mmである。以下同じ。)と非熱融着性のポリエステル系繊維(1.4デニール、カット長5mmである。以下同じ。)の分散液を混合し、固形分重量比でセルロース繊維/熱融着性繊維/非熱融着性ポリエステル系繊維=63/12/25の原料スラリーを得、かかる原料スラリーを多層円網抄紙機に供給し、2層抄合せにて抄紙し、圧搾、乾燥(乾燥温度は最高で130℃)し、熱融着性繊維同志、及び熱融着性繊維とセルロース繊維等との間に熱融着による繊維間結合を形成せしめて基材シートAを得た。
【0025】
基材シートAについて厚さ、密度、引張強度、裂断長、湿潤引張強度及び湿潤裂断長をそれぞれ測定し、その結果を表1に示した。
次いで、基材シートAに、ハニカム形状賦形用の多数のスリット状の切り込み加工を施し、清拭用シートAを得た。
清拭用シートAについて清拭試験を行い、その結果を表2に示した。
また、清拭用シートAについて細菌付着量検査を実施し、その結果を表3に示した。なお、細菌付着量検査に際しては、未使用のものと10分間食器の清拭作業に使用後、水洗いし、よくしぼった後2時間経過したものについて検査した。
【0026】
実施例2
実施例1においてマーセル化した針葉樹系晒硫酸塩パルプに代えて、非マーセル化針葉樹系晒硫酸塩パルプと麻パルプを等量ずつ用い、セルロース繊維/熱融着性繊維/非熱融着性ポリエステル系繊維=56/22/22とした以外は実施例1と同様にして、基材シートBを得た。
基材シートBについて厚さ、密度、引張強度、裂断長、湿潤引張強度及び湿潤裂断長をそれぞれ測定し、その結果を表1に示した。
次いで、基材シートBに、ハニカム形状賦形用の多数のスリット状の切り込み加工を施し、清拭用シートBを得た。
清拭用シートBについて清拭試験を行い、その結果を表2に示した。
また、清拭用シートBについて細菌付着量検査を行い、その結果を表3に示した。なお、細菌付着量検査に際しては、未使用のものと10分間食器の清拭作業に使用後、水洗いし、よくしぼった後2時間経過したものについて検査した。
【0027】
実施例3
実施例1において、セルロース繊維/熱融着性繊維/非熱融着性ポリエステル系繊維=60/40/0とし、さらにポリアクリルアミド系乾燥紙力増強剤及びポリアミドアミンエピクロルヒドリン系湿潤紙力増強剤をそれぞれ固形分で対原料5重量%添加した以外は実施例1と同様にして、基材シートCを得た。
基材シートCについて厚さ、密度、引張強度、裂断長、湿潤引張強度及び湿潤裂断長をそれぞれ測定し、その結果を表1に示した。
次いで、基材シートCに、ハニカム形状賦形用の多数のスリット状の切り込み加工を施し、清拭用シートCを得た。
清拭用シートCについて清拭試験を行い、その結果を表2に示した。
また、清拭用シートCについて細菌付着量検査を行い、その結果を表3に示した。なお、細菌付着量検査に際しては、未使用のものと10分間食器の清拭作業に使用後、水洗いし、よくしぼった後2時間経過したものについて検査した。
【0028】
比較例1
実施例1において、セルロース繊維/熱融着性繊維/非熱融着性ポリエステル系繊維=70/5/25とした以外は実施例1と同様にして、基材シートDを得た。
基材シートDについて厚さ、密度、引張強度、裂断長、湿潤引張強度及び湿潤裂断長をそれぞれ測定し、その結果を表1に示した。
次いで、基材シートDに、ハニカム形状賦形用の多数のスリット状の切り込み加工を施し、清拭用シートDを得た。
清拭用シートDについて清拭試験を行い、その結果を表2に示した。
【0029】
比較例2
実施例1で得た多数のスリット状の切り込み加工を施す前の基材シートAについて、清拭試験を行い、その結果を表2に示した。
【0030】
比較例3
市販のペーパータオルについて、厚さ、密度、引張強度、裂断長、湿潤引張強度及び湿潤裂断長をそれぞれ測定し、その結果を表1に示した。
次いで、かかる市販のペーパータオルについて、清拭試験を行い、その結果を表2に示した。
【0031】
比較例4
市販の亀の子タワシについて、清拭試験を行い、その結果を表2に示した。
【0032】
比較例5
市販のスポンジタワシについて、清拭試験を行い、その結果を表2に示した。また、かかるスポンジタワシについて、細菌付着量検査を実施し、その結果を表3に示した。
なお、細菌付着量検査に際しては、10分間食器の清拭作業に使用した後、水洗いしよく水をしぼって24時間静置し、再度10分間食器の清拭作業に使用した後、水洗いしよく水をしぼった後、2時間経過したものについて検査した。
【0033】
比較例6
実施例1得た清拭用シートAについて細菌付着量検査を実施し、その結果を表3に示した。
なお、細菌付着量検査に際しては、10分間食器の清拭作業に使用した後、水洗いしよく水をしぼって24時間静置し、再度10分間食器の清拭作業に使用した後、水洗いしよく水をしぼった後、2時間経過したものについて検査した。
【0034】
【表1】
Figure 0003876367
【0035】
【表2】
Figure 0003876367
【0036】
【表3】
Figure 0003876367
【0037】
【発明の効果】
本発明の清拭用シートは、上記した実施例1〜3、比較例1〜6、表1、表2及び表3からわかるように以下に記すような利点を有する。
まず第一に、使用時の清拭用シートに付着している各種細菌数が非常に少なく衛生的でかつ安全性が高い。すなわち、たとえば市販のスポンジタワシの通常使用時の一般細菌数が520000、大腸菌群が5100000であり、新潟県の食品指導基準(一般細菌数が100000以下、大腸菌群が陰性)を大きく超えているのに対し、本発明の清拭用シートを使い捨て使用した場合は一般細菌数が200〜400程度、大腸菌群は陰性であり、市販のスポンジタワシの通常使用時に比べはるかに細菌数が少なく、新潟県の食品指導基準に十分に適合する清拭作業条件を確保できる。
【0038】
なお、市販の亀の子タワシやスポンジタワシ等の細菌増殖を防止するために、次亜塩素酸処理をすることも行われるが、この場合、細菌増殖はある程度押えられるものの、トリクロロメタン等の発癌性物質やダイオキシンの発生が指摘されており、必ずしも安全とは言えない。
本発明の清拭用シートを使い捨て使用すれば次亜塩素酸処理をせずとも細菌増殖の心配がなく安全性を確保できる。
【0039】
また、本発明の清拭用シートは、市販の亀の子タワシやスポンジタワシ等と同等以上の汚れ落し効果を有する。さらに、本発明の清拭用シートは柔軟性がありシート状を呈しており使用時に利用目的に応じて折りたたんだりまるめたり、複数枚重ねたりして任意の形状にして利用できるので、狭い所にも入りやすいなど市販の亀の子タワシやスポンジタワシよりも利用範囲が広く便利である。
【0040】
さらに従来の亀の子タワシやスポンジタワシは嵩高のものであるため、その保管や陳列に多くの場所を取るという問題がある他、旅行時等の携帯用としては不便であるが、本発明の清拭用シートは多数のスリット状の切り込みを入れた段階では嵩ばらない薄型のシート状であり、使用時に手で引っぱって多数のスリット状の切り込み部を開き、ハニカム状等の形状にし、このスリット状の切り込み部を開いた状態では、細い帯状部分で囲繞される開口部が形成され、その細い帯状部分の角部が多数形成され、これらの角部によって食器類を傷つけることなく汚れ落としが楽に行われる。したがって、使用感及び汚れ落し効果によいボリュームにすればよく、使用直前まで嵩ばらない薄型シート状としておけるので、その保管や陳列にも場所を取らず、また使い捨てであることも併せ、旅行時等の携帯用としてきわめて有効である。
【図面の簡単な説明】
【図1】 本発明の一実施例を示す部分平面図である。
【図2】 本発明に係る清拭用シートを使用時に手で引っぱった状態を示す部分斜視図である。
【符号の説明】
1 基材シート
2 スリット状の切り込み[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wiping sheet. More specifically, the present invention relates to a wiping sheet that can be used for cleaning tableware or food, has a high effect of removing dirt, and is hygienic and highly safe.
[0002]
[Prior art]
Conventionally, turtle scallops, urethane sponges, metal scrubs, and the like have been used for cleaning tableware or ingredients.
[0003]
[Problems to be solved by the invention]
However, such turtle scallops, urethane sponges, metal scrubs and the like are generally used repeatedly, and therefore various bacteria such as Escherichia coli are likely to proliferate, which is not preferable in terms of hygiene and safety.
Therefore, there has been a strong demand for the appearance of a hygienic and safe cleaning tool that is highly effective in removing dirt and that does not worry about the growth of E. coli or the like.
[0004]
The present inventor has conducted intensive studies to solve the above problems. As a result, the substrate sheet is hydrophilic and has a predetermined wet strength and thickness . Disposable use of a wiping sheet that has a shape that can open a slit-like incision to form a large number of openings surrounded by a thin band-like portion , and is highly effective in removing stains and without causing the growth of various bacteria. The present invention has been completed by finding that it is possible to clean dishes and foods hygienically and safely.
[0005]
[Means for Solving the Problems]
The wiping sheet according to the present invention includes a heat-fusible fiber and a cellulose fiber, and the heat-fusible fiber or a base sheet in which the heat-fusible fiber and the cellulose fiber are bonded to each other. The substrate sheet is made by a wet papermaking method, and the heat-fusible fibers or the heat-fusible fibers and the cellulose fibers form an interfiber bond by heat-sealing. a hydrophilic, wet tensile strength thickness in 0.3mm or more, and to obtain an average of the two was measured direction forming fiber orientation direction and this perpendicular after distilled water for 5 minutes in 20 ° C. (Measurement based on JIS P-8113) and wet tear length (measurement based on JIS P-8113) each have a wet tensile strength of 1.0 kg / 15 mm width or more, and the wet tear length is 0.3 km or more. And the base material Subjecting a number of cuts slit in over bets, a shape capable of forming a number of openings which are surrounded by the slit-shaped cut portion of strip-like portion open to said multiple in use.
[0006]
In the wiping sheet according to the present invention, the content of the heat-fusible fiber in the base sheet is 10 to 50% by weight in solid content, and the content of the cellulose fiber is 30 to 90% by weight in solid content. is there.
[0007]
Further, the wiping sheet according to the present invention is made of at least one of polyester fiber, vinylon fiber, and polyolefin fiber as the heat-fusible fiber.
[0008]
When the heat-fusible fiber in the base material sheet according to the wiping sheet of the present invention is given sufficient heat to exhibit the heat-fusing function, the heat-fusible fiber or the heat-fusing fiber The type of the fiber is not particularly limited as long as the fiber-to-fiber bond can be formed by heat fusion between the conductive fiber and the cellulose fiber.
[0009]
However, taking into account the ease of developing the heat-sealing function or economic efficiency, polyester-based heat-fusible fibers, vinylon-based heat-fusible fibers, polyethylene fibers, polyolefin fibers such as polypropylene fibers, etc. Preferably, at least one type is selected from
[0010]
The content of the heat-fusible fiber is preferably 10 to 50% by weight, more preferably 15 to 40% by weight in terms of solid content. If the content is less than 10% by weight, a predetermined wet tensile strength or wet tear length may not be obtained. On the other hand, when it exceeds 50% by weight, sufficient hydrophilicity or flexibility may not be obtained depending on the kind of the heat-fusible fiber.
[0011]
Cellulose fibers in the base sheet according to the wiping sheet of the present invention are selected from softwood or hardwood chemical pulp, wood pulp such as semi-chemical pulp, hemp pulp, various waste paper, linter, kenaf, etc. One type or two or more types can be used in combination. It is more preferable to use a pulp that has been subjected to linter or mercerization treatment in terms of improving hydrophilicity.
[0012]
The cellulose fiber content is preferably 30 to 90% by weight, more preferably 40 to 80% by weight in terms of solid content. If the content is less than 30% by weight, sufficient hydrophilicity or flexibility may not be obtained. On the other hand, when it exceeds 90% by weight, a predetermined wet tensile strength or wet tear length may not be obtained.
[0013]
The wet tensile strength measured based on JIS P-8113 after dipping the substrate sheet according to the wiping sheet of the present invention in distilled water at 20 ° C. for 5 minutes is the average of the fiber orientation direction and the direction perpendicular thereto. 1.0 kg / 15 mm width or more, preferably 1.5 kg / 15 mm width or more, more preferably 2.0 kg / 15 mm width or more. Further, the wet tear length determined from the wet tensile strength should be 0.3 km or more, preferably 0.5 km or more, more preferably 1 km or more. When the above-described wet tensile strength is less than 0.5 kg / 15 mm width or the above-mentioned wet tear length is less than 0.3 km, the durability at the time of washing is insufficient and the sheet may be broken or torn, or from the sheet surface. Dropping of paper quality is likely to occur.
[0014]
The thickness of the base material sheet according to the wiping sheet of the present invention should be 0.3 to 2 mm, preferably 0.5 to 1 mm. If the thickness is less than 0.3 mm, the strength is insufficient and the durability during cleaning tends to be insufficient. On the other hand, when the thickness exceeds 2 mm, the flexibility is insufficient, and the touch feeling when gripped by the hand is likely to deteriorate, and the usability is also likely to deteriorate due to difficulty in insertion in a narrow place. In the case of a thickness of 0.5 to 1 mm, the touch feeling and the volume feeling when grasped are the best.
[0015]
The base sheet according to the wiping sheet of the present invention is manufactured by a wet papermaking method . That is, in order to produce a base sheet according to the wiping sheet of the present invention by a wet papermaking method, a raw material slurry containing a predetermined amount of heat-fusible fiber and cellulose fiber is prepared and then made by a normal papermaking method. That's fine.
[0016]
For papermaking, the raw material slurry may be supplied onto a papermaking net such as a normal long net, circular net or inclined net, filtered and dehydrated, and then compressed and dried. Further, if necessary, two or more paper layers may be overlapped by various combination nets, multilayer circular nets, or various laminators.
It should be noted that, when drying, by giving sufficient thermal conditions for the blended heat-fusible fiber to exhibit the heat-fusing function, the heat-fusible fiber or between the heat-fusible fiber and the cellulose fiber, etc. It is desirable to form a fiber-to-fiber bond between them by thermal fusion, but in some cases, the thermal fusion function may be expressed by post-processing such as a thermal calendar.
[0017]
The sheet is sufficiently heat-treated by such drying or post-processing, and as a result, the amount of bacteria and the like attached thereto can be basically extremely reduced. However, various antibacterial treatments may be applied as necessary.
If necessary, a dry or wet paper strength enhancer, a hydrophilizing agent, various synthetic fibers, or a color pigment or dye for coloring may be blended.
[0018]
In order to obtain the wiping sheet of the present invention from the base sheet 1 thus manufactured, the base sheet 1 may be subjected to a number of slit-like cuts 2 for honeycomb shape shaping or the like (see FIG. 1). Although not particularly limited for a number of slit-like cuts 2 shape, opening a large number of slit-shaped cut portion by pulling by hand during use (see FIG. 2), the strip-like part upon the shape of the honeycomb-shaped, etc. A shape that can form a large number of openings to be surrounded, and a large number of corners formed by the thin band-shaped portion improves the polishing effect on the surface of the wiping material such as tableware and foodstuffs, and is gripped by hand It is necessary to have a shape that is easy to grasp with a finger and easy to use.
[0019]
Furthermore, it is also possible to give a stronger dirt removing effect by incorporating abrasive particles such as glass beads and shirasu into the wiping sheet of the present invention.
[0020]
【Example】
Next, the present invention will be described more specifically based on the following examples.
In this example, each item was measured by the following method.
(1) Sheet thickness: JIS P-8118
(2) Sheet density: JIS P-8118
{Circle around (3)} Tensile strength of sheet: JIS P-8113 (however, the fiber orientation direction and the direction perpendicular thereto were measured, and the average of both was determined.)
(4) Sheet tear length: From the above (1) sheet thickness, (2) sheet density, and (3) sheet tensile strength
Figure 0003876367
I asked for it.
[0021]
(5) Wet tensile strength of sheet: Measured according to JIS P-8113 after immersion in distilled water at 20 ° C. for 5 minutes (however, the fiber orientation direction and the direction perpendicular thereto were measured to determine the average of both).
(6) Wet tear length of sheet: From the above (1) sheet thickness, (2) sheet density and (5) sheet wet tensile strength
Figure 0003876367
I asked for it.
[0022]
(7) Wiping test: After wiping a 30 cm long and 25 cm wide wiping sheet by hand to open a large number of slit-like incisions to form a honeycomb shape, it is folded in 4 to 8 so that it can be easily gripped by hand. Fold it up and immerse it in tap water, then use a method similar to the normal cleaning process with a turtle sardine or sponge sardine, tableware with rice grains, tableware with curry, tableware with oil, glass Cups, cutting boards, and pots were wiped, and the degree of dirt was removed, and the wiping sheet was observed for breakage, tearing, or the absence of paper quality from the surface.
The evaluation was performed based on the following evaluation criteria.
A: Dirt is removed very well. The feeling of use is good, and the wiping sheet is not broken or torn, and the paper quality is not dropped from the surface.
○: Dirt is well removed. The feeling of use is generally good, and the wiping sheet is almost free from breakage, tearing, and loss of paper quality from the surface.
Δ: Dirt is removed relatively well.
X: Dirt removal is insufficient. In some cases, the wiping sheet breaks and breaks, and the paper quality drops off from the surface.
[0023]
(8) Bacterial adherence test In accordance with the food hygiene test method, the number of general bacteria is determined by spiral plating method, coliform group by pour method, Staphylococcus aureus by direct method, Salmonella, Vibrio parahaemolyticus and pathogen Escherichia coli O-157 was measured by the enrichment culture method.
[0024]
Example 1
A non-heated polyester heat-fusible fiber (melting point 110 ° C., 1.5 denier, cut length 5 mm; the same applies hereinafter) prepared separately from a beater raw material of softwood bleached sulfate pulp subjected to mercerization. A dispersion of a fusible polyester fiber (1.4 denier, cut length of 5 mm, the same applies hereinafter) is mixed, and the cellulose fiber / heat-fusible fiber / non-heat-fusible polyester in weight ratio by solid content. A raw material slurry of system fiber = 63/12/25 is obtained, the raw material slurry is supplied to a multi-layered circular paper machine, paper is made in a two-layered composition, pressed and dried (up to 130 ° C. drying temperature), The base sheet A was obtained by forming a fiber-to-fiber bond by heat fusion between the heat-fusible fibers and between the heat-fusible fibers and the cellulose fibers.
[0025]
The thickness, density, tensile strength, tear length, wet tensile strength, and wet tear length were measured for the base sheet A, and the results are shown in Table 1.
Next, the substrate sheet A was subjected to a number of slit-shaped cutting processes for forming the honeycomb shape to obtain a wiping sheet A.
A wiping test was conducted on the wiping sheet A, and the results are shown in Table 2.
Further, the bacterial adhesion amount inspection was performed on the wiping sheet A, and the results are shown in Table 3. In addition, when inspecting the amount of adhered bacteria, the unused one and the one that had been used for the wiping work of the tableware for 10 minutes, washed with water, and well squeezed for 2 hours were inspected.
[0026]
Example 2
In place of the mercerized bleached sulfate pulp converted to mercerized in Example 1, an equal amount of non-merceled softwood bleached sulfate pulp and hemp pulp was used, and cellulose fiber / heat-sealable fiber / non-heat-sealable polyester. A base sheet B was obtained in the same manner as in Example 1 except that the system fiber was 56/22/22.
The base sheet B was measured for thickness, density, tensile strength, tear length, wet tensile strength, and wet tear length, and the results are shown in Table 1.
Next, the substrate sheet B was subjected to a number of slit-shaped cutting processes for forming the honeycomb shape, whereby a wiping sheet B was obtained.
A wiping test was conducted on the wiping sheet B, and the results are shown in Table 2.
Further, the bacterial adhesion amount inspection was performed on the wiping sheet B, and the results are shown in Table 3. In addition, when inspecting the amount of adhered bacteria, the unused one and the one that had been used for the wiping work of the tableware for 10 minutes, washed with water, and well squeezed for 2 hours were inspected.
[0027]
Example 3
In Example 1, cellulose fiber / heat-sealable fiber / non-heat-sealable polyester fiber = 60/40/0, and polyacrylamide-based dry paper strength enhancer and polyamidoamine epichlorohydrin-based wet strength strength agent A base sheet C was obtained in the same manner as in Example 1 except that 5% by weight of the raw material was added in the solid content.
The thickness, density, tensile strength, tear length, wet tensile strength, and wet tear length were measured for the base sheet C, and the results are shown in Table 1.
Next, the substrate sheet C was subjected to a number of slit-shaped incisions for forming the honeycomb shape to obtain a wiping sheet C.
A wiping test was conducted on the wiping sheet C, and the results are shown in Table 2.
Moreover, the amount of bacteria adhesion test was performed on the wiping sheet C, and the results are shown in Table 3. In addition, when inspecting the amount of adhered bacteria, the unused one and the one that had been used for the wiping work of the tableware for 10 minutes, washed with water, and well squeezed for 2 hours were inspected.
[0028]
Comparative Example 1
A base sheet D was obtained in the same manner as in Example 1 except that cellulose fiber / heat-sealable fiber / non-heat-sealable polyester fiber = 70/5/25 in Example 1.
The base sheet D was measured for thickness, density, tensile strength, tear length, wet tensile strength, and wet tear length, and the results are shown in Table 1.
Next, the substrate sheet D was subjected to a number of slit-shaped cutting processes for forming the honeycomb shape, whereby a wiping sheet D was obtained.
A wiping test was performed on the wiping sheet D, and the results are shown in Table 2.
[0029]
Comparative Example 2
A wiping test was conducted on the base sheet A before the slit-like cutting process obtained in Example 1 was performed, and the results are shown in Table 2.
[0030]
Comparative Example 3
The thickness, density, tensile strength, tear length, wet tensile strength, and wet tear length of the commercially available paper towel were measured, and the results are shown in Table 1.
Next, a wiping test was performed on the commercially available paper towel, and the results are shown in Table 2.
[0031]
Comparative Example 4
A wiping test was performed on commercially available turtle scallops, and the results are shown in Table 2.
[0032]
Comparative Example 5
A commercially available sponge scrub was subjected to a wiping test, and the results are shown in Table 2. Moreover, about this sponge scrub, the bacterial adhesion amount inspection was implemented and the result was shown in Table 3.
In addition, when inspecting the amount of bacteria attached, use for tableware wiping work for 10 minutes, then wash with water and squeeze water for 24 hours, and again use for tableware wiping work for 10 minutes, then wash with water. After squeezing the water, it was inspected after 2 hours.
[0033]
Comparative Example 6
Example 1 A bacterial adhesion amount test was performed on the wiping sheet A obtained, and the results are shown in Table 3.
In addition, when inspecting the amount of bacteria attached, use for tableware wiping work for 10 minutes, then wash with water and squeeze water for 24 hours, and again use for tableware wiping work for 10 minutes, then wash with water. After squeezing the water, it was inspected after 2 hours.
[0034]
[Table 1]
Figure 0003876367
[0035]
[Table 2]
Figure 0003876367
[0036]
[Table 3]
Figure 0003876367
[0037]
【The invention's effect】
The wiping sheet of the present invention has the following advantages as can be seen from Examples 1 to 3, Comparative Examples 1 to 6, Table 1, Table 2, and Table 3.
First of all, the number of various bacteria adhering to the wiping sheet at the time of use is very small and hygienic and highly safe. That is, for example, the number of general bacteria at the time of normal use of commercially available sponge sardines is 520000, coliform group is 5100000, which greatly exceeds the food guidance standard of Niigata Prefecture (general bacteria count is 100,000 or less, coliform group is negative). On the other hand, when the wiping sheet of the present invention is used in a disposable manner, the number of general bacteria is about 200 to 400, the coliform group is negative, and the number of bacteria is much smaller than that of normal use of commercially available sponge sardines. It is possible to secure the wiping work conditions that fully meet the food guidance standards.
[0038]
In addition, hypochlorous acid treatment is also performed to prevent bacterial growth such as commercially available turtle scallops and sponge sardines, but in this case, although bacterial growth is suppressed to some extent, carcinogenesis such as trichloromethane The occurrence of toxic substances and dioxins has been pointed out, which is not necessarily safe.
If the wiping sheet of the present invention is used in a disposable manner, safety can be ensured without worrying about bacterial growth without hypochlorous acid treatment.
[0039]
In addition, the wiping sheet of the present invention has a stain removal effect equivalent to or better than commercially available turtle scallops, sponge scourers, and the like. Further, the wiping sheet of the present invention is flexible and presents a sheet shape, and can be folded and rounded according to the purpose of use during use, or can be used in any shape by stacking multiple sheets, so it can be used in a narrow space. It is more convenient than the commercially available turtle scallops and sponge sardines.
[0040]
Furthermore, since the conventional turtle scallops and sponge sardines are bulky, there is a problem of taking up a lot of space for storage and display, and it is inconvenient for portable use such as traveling, The wiping sheet is a thin sheet that does not become bulky when a large number of slit-like cuts are made, and when used, it is pulled by hand to open a large number of slit-like cuts into a honeycomb-like shape. In the state where the slit-shaped cut portion is opened, an opening surrounded by a thin strip portion is formed, and a number of corner portions of the thin strip portion are formed, and these corner portions can remove dirt without damaging tableware. It is done easily. Therefore, it can be made into a volume that is good for the feeling of use and the effect of removing dirt, and it can be made into a thin sheet that does not bulk up to just before use. It is extremely effective for portable use.
[Brief description of the drawings]
FIG. 1 is a partial plan view showing an embodiment of the present invention.
FIG. 2 is a partial perspective view showing a state in which the wiping sheet according to the present invention is pulled by hand during use.
[Explanation of symbols]
1 Substrate sheet 2 Slit cut

Claims (3)

熱融着性繊維とセルロース繊維を含有し、前記熱融着性繊維同志あるいは該熱融着性繊維とセルロース繊維が繊維間結合している基材シートからなる清拭用シートであって、前記基材シートは、湿式抄造法によって抄造し、前記熱融着性繊維同志あるいは該熱融着性繊維とセルロース繊維が熱融着による繊維間結合を形成し、親水性であり、厚さが0.3mm以上で、かつ20℃の蒸留水に5分間浸漬後の繊維配向方向及びこれと直角をなす方向について測定して両者の平均を求めた湿潤引張強度(JIS P−8113に基づく測定)及び湿潤裂断長(JIS
P−8113に基づく測定)のそれぞれは該湿潤引張強度が1.0kg/15mm幅以上で、該湿潤裂断長が0.3km以上であり、かつ前記基材シートに多数のスリット状の切り込みを施し、使用時に該多数のスリット状の切り込み部を開いて細い帯状部分により囲繞される開口部を多数形成し得る形状であることを特徴とする清拭用シート。
A wiping sheet comprising a heat-fusible fiber and a cellulose fiber, and comprising a base sheet in which the heat-fusible fiber or the heat-fusible fiber and the cellulose fiber are bonded between the fibers, The base sheet is made by a wet paper making method, and the heat-fusible fibers or the heat-fusible fibers and the cellulose fibers form a fiber-to-fiber bond by heat fusion , are hydrophilic, and have a thickness of 0. Wet tensile strength (measurement based on JIS P-8113) measured for the fiber orientation direction after immersion for 5 minutes in distilled water at 20 ° C. for 3 minutes or more and the direction perpendicular thereto. Wet tear length (JIS
Each of the measurements based on P-8113) has the wet tensile strength of 1.0 kg / 15 mm width or more, the wet tear length of 0.3 km or more, and a number of slit-like cuts in the base sheet. A wiping sheet characterized by having a shape capable of forming a large number of openings surrounded by thin strips by opening the large number of slit-shaped cut portions during use .
基材シート中の熱融着性繊維含有率が固形分で10〜50重量%、セルロース繊維の含有率が固形分で30〜90重量%である請求項1記載の清拭用シート。The wiping sheet according to claim 1, wherein the content of heat-fusible fibers in the base sheet is 10 to 50% by weight in terms of solids and the content of cellulose fibers is 30 to 90% by weight in terms of solids. 熱融着性繊維はポリエステル系繊維、ビニロン系繊維、ポリオレフィン系繊維の内の少なくとも1種類よりなる請求項1または2記載の清拭用シート。  The wiping sheet according to claim 1 or 2, wherein the heat-fusible fiber comprises at least one of polyester fiber, vinylon fiber, and polyolefin fiber.
JP33945497A 1997-11-26 1997-11-26 Cleaning sheet Expired - Fee Related JP3876367B2 (en)

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