JP2004150911A

JP2004150911A - Receiver sheet for collecting feces

Info

Publication number: JP2004150911A
Application number: JP2002315303A
Authority: JP
Inventors: Tokuko Hayashi; 徳鴻林; Yoshinori Kikuchi; 慶典菊池; Kazutomi Okawa; 一臣大川
Original assignee: Daio Paper Corp
Current assignee: Daio Paper Corp
Priority date: 2002-10-30
Filing date: 2002-10-30
Publication date: 2004-05-27
Anticipated expiration: 2022-10-30
Also published as: JP4092178B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a low-cost receiver sheet for collecting feces, having water resistance until feces are collected in a flush toilet without applying a secondary process such as a laminate process, a coating process, etc. and dispersion property in water which will not cause a clogged pipe, when the sheet is flushed. <P>SOLUTION: When the receiver sheet for collecting feces is manufactured, one or both of mercerized pulp and rayon are contained in natural fibers, such as wood pulp, with paper density being 0.7 g/cm<SP>3</SP>or smaller and a sizing agent is internally added by wet papermaking. Since the sizing agent is internally added so as to have sizing degree (JIS P 8140) of 10 to 30 g/10 s, the receiver sheet for collecting feces has the water resistance, having a submersion time as the index of a feces floating time of 3 min or longer and the dispersion property in water, having a raveling property (JIS P 4501 4.5) of 30 to 200 s for preventing clogging of pipe, when water is drained. The receiver sheet for collecting feces has a water resistance, having a submersion time of 3 min or longer and a water dispersion time, having raveling property of 30 to 200 s, by internally adding the sizing agent as an active component of 0.01 to 1% per absolute dry mass of pulp. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本願発明は、水洗トイレ等の水たまりに一時的に浮かべて試料（便）を採取したあと、そのまま水とともに流すことができる採便用便受けシートに関するものである。
【０００２】
【従来の技術及び発明が解決しようとする課題】
医学的諸検査のために行われる採便は、水洗トイレの水たまりに採便用便受けシートを浮かべて行われる場合が多く、この場合、採便用便受けシートとしては、試料採取までの適度の耐水性と試料採取後の適度の水分散性が求められる。
【０００３】
従来公知の採便用便受けシートの中には、このような要求に対応するために、水溶紙に耐水処理剤を塗布する方法（たとえば、特開平１０−６８７２６号公報）、水溶性フィルムに水分散性紙を積層する方法（たとえば、特開平１０−２２７７８７号公報）、繊維状のカルボキシアルキルセルロースを含有する基紙に、アルカリ化剤と、アルカリ化剤と相溶性を有するサイズ剤を含浸塗工する方法（たとえば、特開２００１−２８９７４６号公報）などが提案されている。
【０００４】
これらの各方法は、それなりの効果を奏するものであろうと考えられるが、一方、いずれも、各種の二次加工を要するものであってコスト面で問題があるのではないか、と考えられる。
【０００５】
本願発明は、このような積層加工、コーティング加工などの二次加工を施すことなしに水洗トイレでの便を採取するまでの耐水性と、そのまま流した際にも配管詰まりが発生しないような水分散性を有する安価な採便用便受けシートを提案することを目的とするものである。
【０００６】
【課題を解決するための手段】
本願発明は、上記の目的を達成するためになされたもので、採便用便受けシートの製造において、木材パルプ等の天然系繊維にマーセル化パルプとレーヨンまたはその一方を含有させることにより、紙の密度を０．７ｇ／ｃｍ^３以下とし、サイズ剤を内添したことを第１の特徴とする。
【０００７】
第１の特徴に加えて、第２の特徴として、コブサイズ度（ＪＩＳＰ８１４０）が１０〜３０ｇ／１０秒となるようサイズ剤を内添することにより、水没時間（便を浮かせることのできる時間の指標）が３分以上となる耐水性と、ほぐれやすさ（ＪＩＳＰ４５０１４．５）が３０〜２００秒となる水分散性とを有するようにすることができる。
【０００８】
ここで水没時間の測定方法について説明する。タオル（約８００ｍｍ×約３００ｍｍ、風乾重量約９０ｇ）を長手方法に２回折り畳み、横方向に丸め、一旦水に浸けた後、重量２００ｇ±５ｇとなるまで固く絞る。直径約４５ｍｍ長さ約１６０ｍｍの円柱状になる。採便シート（２５７ｍｍ×３６４ｍｍ）を水に浮かせ、採便シートの中心に絞ったタオルを長手方法に寝かせて静かに置き、タオルを置いてからタオルの体積の半分が水面下に沈むまでの時間を測定し、水没時間とした。
【０００９】
又、上記第１及び第２の特徴をそなえた採便用便受けシートにおいて、第３の特徴として、サイズ剤を絶乾パルプ重量当り有効成分として０．０１〜１％内添することにより、水没時間が３分以上となる耐水性と、ＪＩＳＰ４５０１４．５によるほぐれやすさが３０〜２００秒となる水分散性とを有するようにすることができる。
【００１０】
天然系繊維としては、上記の木材パルプ（針葉樹晒クラフトパルプ、広葉樹晒クラフトパルプ等）のほか、非木材パルプ（ケナフ、麻、バガス、コットンリンター等）等がある。
【００１１】
本願発明の採便用便受けシートは、サイズ剤を適量内添させることにより、紙の密度を０．７ｇ／ｃｍ^３以下としても、必要な浮力と、一定の耐水性（水没時間が３分間以上）及び水分散性（ほぐれやすさが３０〜２００秒）を達成することができるようになる。
【００１２】
本願発明を実施するにあたり、天然系繊維のフリーネス調整を行うには次のようにして行うことができる。
【００１３】
すなわち、抄紙原料（天然系繊維）をパルパーにて水と撹拌混合させたのち、互いに反対方向に回転する円盤の刃の間に通し（ダブルディスクリファイナー）繊維を毛羽立たせる（フィブリル化）事でフリーネスを調整する。また、この方法に限らず、他の方法にてフリーネスを調整してもよい。フリーネスは高いほど水分散性が良く、５００ｃｃ以上が望ましい。
【００１４】
本願発明に用いるマーセル化パルプとしては、次のようなものである。
【００１５】
すなわち、パルプ中のセルロースを水酸化ナトリウムにて処理し、セルロース中のグルコースの６位の−ＯＨ基を−ＯＮａ基に変えアルカリセルロースを生成させた（マーセル化）ものである。マーセル化パルプを配合することで抄紙性を確保しながら密度を低く押さえる事ができ、耐水性と水分散性を適度に有した紙が抄紙できる。また、マーセル化パルプと同様の嵩高性を有するものであれば、マーセル化パルプに限らず使用できる。レーヨンもマーセル化パルプと同様に嵩高性をもたらす事ができる。ただしレーヨンを使用した場合、便を浮かせることのできる時間を確保しにくくなるため注意が必要である。
【００１６】
本願発明で使用可能なサイズ剤としては、有効成分としてアルキルケテンダイマーやロジン等があるが、サイズ効果を有するものであれば成分は限定されるものではない。
【００１７】
【実施例】
次に、表１に示した本願発明の実施例と、その比較対象としての比較例について説明する。
【００１８】
【表１】

【００１９】
※１）水没時間は下記の３段階にて評価した。
○：１８０秒を越える
△：１２０秒を越え１８０秒以下
×：１２０秒未満
【００２０】
※２）ほぐれやすさは下記の３段階にて評価した。
○：１００秒以下
△：１００秒を越え２００秒以下
×：２００秒を越える
【００２１】
※３）総合評価は、◎、○、△、×の４段階にて評価した。
【００２２】
比較例１
米坪を４５±２ｇ／ｍ^２、マーセル化パルプの配合率を２５％としてサイズ剤を使用せずに抄紙したものである。サイズ性がないため、吸水性が高く、便を浮かせる事のできる時間が短く、良好に採便できないケースが生じる。
【００２０】
実施例１〜３
比較例１と同じく、米坪を４５±２ｇ／ｍ^２、マーセル化パルプを２５重量％配合し、サイズ剤添加量を各種変えたものである。実施例２のサイズ剤（日本ＰＭＣ株式会社製ＡＳ−２６３有効成分濃度２０％）を絶乾パルプ重量当たり有効成分として０．１％添加したものが耐水性と分散性の両面で適しており、良好な結果であった。サイズ剤が少なすぎると便を浮かせられる時間が短くなり、逆に多すぎると分散しにくくなり排水時に配管詰まりを生じる危険が生じ、サイズ剤の添加量が重要なポイントであることを確認した。サイズ剤の添加量は絶乾パルプ重量当たり有効成分として０．０１〜１％が好ましく、さらに０．０５〜０．２％が好適である。
【００２１】
比較例２
マーセル化パルプは天然系繊維に比べて高価であり、低コスト化のため、マーセル化パルプ配合率を１０％とし、サイズ剤は絶乾パルプ重量当たり有効成分として０．０２％添加した。マーセル化パルプ配合率を低減しすぎると分散性が悪くなり、配管詰まりが生じやすくなる。
【００２２】
実施例４
マーセル化パルプの配合率を５０％として、密度を低くする事で浮力をアップさせ、便を浮かべることのできる時間を維持しながら、分散性向上を試みた。耐水性、分散性ともに好適な性能を有する事ができた。ただし、マーセル化パルプの配合率が多くなるほどコストが上昇する事となる。マーセル化パルプ配合率は５〜８０重量％が適しており、さらに１５〜５０重量％が好適である。密度は０．７ｇ／ｃｍ^２以下が適している。
【００２３】
【発明の効果】
本願発明の採便用便受けシートは、木材パルプ等の天然系繊維にマーセル化パルプを含有させることにより、紙の密度を０．７ｇ／ｃｍ^３以下としつつ、さらにサイズ剤を湿式抄紙により内添することにより、試料（便）採取に必要な浮力ならびに耐水性と、試料採取後の水分散性とを同時に達成し得たものであり、従来の各種二次加工を施した同種製品より製造コストの低い、安価な製品を提供し得る効果がある。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a stool receiving sheet that can be temporarily floated in a puddle of a flush toilet or the like to collect a sample (feces) and then be allowed to flow with water as it is.
[0002]
Problems to be solved by the prior art and the invention
In many cases, stool collection for medical examinations is performed with a stool collection sheet floating in a puddle in a flush toilet. Is required to have water resistance and a suitable water dispersibility after sampling.
[0003]
In order to respond to such a demand, a conventionally known defecation sheet has a method of applying a water-resistant treatment agent to water-soluble paper (for example, JP-A-10-68726). A method of laminating water-dispersible paper (for example, JP-A-10-227787), impregnating a base paper containing fibrous carboxyalkyl cellulose with an alkalizing agent and a sizing agent compatible with the alkalizing agent. A coating method (for example, JP-A-2001-289746) has been proposed.
[0004]
Each of these methods is considered to have a certain effect, but on the other hand, it is considered that any of these methods requires various types of secondary processing, and may cause problems in terms of cost.
[0005]
The invention of the present application is water-resistant until a stool is collected in a flush toilet without performing secondary processing such as lamination processing and coating processing, and water that does not cause clogging of pipes even when it is flushed. It is an object of the present invention to propose an inexpensive defecation receiving sheet having dispersibility.
[0006]
[Means for Solving the Problems]
The present invention has been made in order to achieve the above-mentioned object, and in the production of a toilet sheet for collecting stool, by incorporating mercerized pulp and / or rayon in natural fibers such as wood pulp, paper Is characterized by having a density of 0.7 g / cm ³ or less and internally adding a sizing agent.
[0007]
In addition to the first feature, as a second feature, a sizing agent is internally added so that the degree of cobb size (JIS P 8140) is 10 to 30 g / 10 sec. (Indicator of No. 3) is 3 minutes or more, and water dispersibility such that the easiness of loosening (JIS P 4501 4.5) is 30 to 200 seconds.
[0008]
Here, a method of measuring the submersion time will be described. A towel (about 800 mm x about 300 mm, air-dry weight about 90 g) is folded twice in the longitudinal direction, rolled in the horizontal direction, immersed in water once, and then squeezed tightly to a weight of 200 g ± 5 g. It has a cylindrical shape with a diameter of about 45 mm and a length of about 160 mm. Float the stool sheet (257 mm x 364 mm) in water, lay the towel squeezed in the center of the stool sheet in the longitudinal direction, gently lay it down, and set the time for the half of the towel to sink below the surface of the water after placing the towel. Was measured and defined as a submersion time.
[0009]
Further, in the stool collection sheet provided with the first and second features, as a third feature, a sizing agent is internally added as an active ingredient in an amount of 0.01 to 1% per weight of the absolutely dried pulp, It can be made to have water resistance in which the water immersion time is 3 minutes or more, and water dispersibility in which the ease of loosening according to JIS P 4501 4.5 is 30 to 200 seconds.
[0010]
Examples of the natural fibers include the above-mentioned wood pulp (such as softwood bleached kraft pulp and hardwood bleached kraft pulp) and non-wood pulp (such as kenaf, hemp, bagasse, and cotton linter).
[0011]
The stool receiving sheet of the present invention has a required buoyancy and a certain level of water resistance (submersion time of 3 minutes) even when the density of the paper is 0.7 g / cm ³ or less by adding an appropriate amount of a sizing agent. Above) and water dispersibility (easiness of unraveling for 30 to 200 seconds) can be achieved.
[0012]
In carrying out the present invention, the freeness of the natural fiber can be adjusted as follows.
[0013]
That is, a papermaking raw material (natural fiber) is stirred and mixed with water by a pulper, and then passed between blades of a disk rotating in opposite directions (double disc refiner) to make the fiber fluff (fibrillation). To adjust. Further, the freeness may be adjusted by another method without being limited to this method. The higher the freeness is, the better the water dispersibility is, and preferably 500 cc or more.
[0014]
The mercerized pulp used in the present invention is as follows.
[0015]
That is, cellulose in pulp is treated with sodium hydroxide, and the -OH group at the 6-position of glucose in cellulose is changed to -ONa group to produce alkali cellulose (mercerization). By blending the mercerized pulp, the density can be kept low while ensuring the papermaking properties, and paper having moderate water resistance and water dispersibility can be made. Further, as long as it has the same bulkiness as the mercerized pulp, it can be used without being limited to the mercerized pulp. Rayon can provide bulkiness as well as mercerized pulp. However, care must be taken when using rayon because it is difficult to secure enough time to lift the stool.
[0016]
Examples of the sizing agent usable in the present invention include alkyl ketene dimer and rosin as active ingredients, but the ingredients are not limited as long as they have a size effect.
[0017]
【Example】
Next, examples of the present invention shown in Table 1 and comparative examples as comparison objects will be described.
[0018]
[Table 1]

[0019]
* 1) The submersion time was evaluated in the following three stages.
：: more than 180 seconds Δ: more than 120 seconds and less than 180 seconds ×: less than 120 seconds
* 2) The ease of loosening was evaluated on the following three levels.
：: 100 seconds or less Δ: More than 100 seconds and 200 seconds or less ×: More than 200 seconds
* 3) The overall evaluation was evaluated in four stages of ◎, ○, Δ, ×.
[0022]
Comparative Example 1
The paper was prepared without using a sizing agent, with a rice tsubo of 45 ± 2 g / m ² and a blending ratio of mercerized pulp of 25%. Due to lack of size, the water absorption is high, the time during which the stool can be floated is short, and there are cases where stool cannot be collected well.
[0020]
Examples 1-3
As in Comparative Example 1, the rice tsubo was blended at 45 ± 2 g / m ² , the mercerized pulp was blended at 25% by weight, and the amount of the sizing agent added was varied. The addition of 0.1% of the sizing agent of Example 2 (AS-263 active ingredient concentration 20%, manufactured by Japan PMC Co., Ltd.) as an active ingredient per bone dry pulp weight is suitable for both water resistance and dispersibility. Good results. When the amount of the sizing agent was too small, the time for floating the feces was shortened. On the other hand, when the amount was too large, it was difficult to disperse, and there was a risk of clogging of the pipe at the time of drainage. The addition amount of the sizing agent is preferably 0.01 to 1%, more preferably 0.05 to 0.2%, as an active ingredient per weight of the absolutely dried pulp.
[0021]
Comparative Example 2
Mercerized pulp is more expensive than natural fibers, and to reduce cost, the mercerized pulp content was 10%, and the sizing agent was added as an active ingredient at 0.02% per weight of absolutely dry pulp. If the blending ratio of the mercerized pulp is excessively reduced, the dispersibility deteriorates, and the clogging of the pipe tends to occur.
[0022]
Example 4
The blending ratio of the mercerized pulp was set to 50%, the buoyancy was increased by lowering the density, and the dispersibility was improved while maintaining the time during which stool could float. Both water resistance and dispersibility were able to have suitable performance. However, as the blending ratio of the mercerized pulp increases, the cost increases. The mercerized pulp compounding ratio is suitably from 5 to 80% by weight, and more preferably from 15 to 50% by weight. The density is suitably 0.7 g / cm ² or less.
[0023]
【The invention's effect】
The feces collection sheet of the present invention has a paper density of 0.7 g / cm ³ or less and a sizing agent formed by wet papermaking by adding mercerized pulp to natural fibers such as wood pulp. By adding, the buoyancy and water resistance required for sample (feces) collection and the water dispersibility after sample collection can be achieved at the same time. Manufactured from similar products that have been subjected to conventional secondary processing There is an effect that a low-cost and inexpensive product can be provided.

Claims

By incorporating mercerized pulp and / or rayon into natural fibers such as wood pulp, the density of the paper is reduced to 0.7 g / cm ³ or less, and a sizing agent is internally added by wet papermaking. Stool receiving sheet.

By internally adding a sizing agent so that the degree of cob sizing according to JIS P 8140 is 10 to 30 g / 10 seconds, the water resistance that the submersion time (indicator of the time during which feces can be lifted) becomes 3 minutes or more, and JIS P 8140 The toilet sheet according to claim 1, which has water dispersibility such that the ease of loosening according to 4501 4.5 is 30 to 200 seconds.

By adding a sizing agent as an active ingredient in an amount of 0.01 to 1% based on the weight of the absolutely dried pulp, a water immersion time (indicator of time over which feces can be floated) of 3 minutes or more, and JIS P 4501 2. The toilet seat sheet according to claim 1, wherein the sheet has a water dispersibility such that the ease of loosening according to 4.5 is 30 to 200 seconds.