JP2006098133A - Feces sampling sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a feces sampling sheet manufacturable at low cost with a simple process, having feces holdability and water dispersibility with a balance required for the feces sampling sheet. <P>SOLUTION: In this feces sampling sheet, the feces holdability is adjusted to be 180 seconds or longer and the water dispersibility is adjusted to be 300 seconds or shorter by combination of a sizing agent and a pulp beating degree. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a sheet for reliably and easily collecting stool required for colorectal cancer screening and the like, more specifically, collecting stool that floats on the surface of a water reservoir of a flush toilet and excretes thereon. The present invention relates to a stool collection sheet that can hold a stool while the stool is collected and can be discarded without being clogged in a pipe.

  Feces excreted by humans have a variety of information indicating their health status, and stool testing is one of the important test items in various medical tests such as group screening, regular medical check-up, and human dock.

In order to collect a stool for a stool examination, the stool is usually excreted in a toilet and a stool for a stool examination is collected from the stool.
Recently, flush toilets have become widespread in our country, and among them, the proportion of Western flush toilets with toilet seats for sitting is large, but in Western flush toilets, a water reservoir is usually formed. .

Therefore, in order to collect stool, it is necessary to prevent the stool from being submerged in the water reservoir, but the water reservoir has a depth that allows the stool to submerge for the purpose of preventing odor from defecation. It is difficult to collect so that stool does not sink.
In addition, the stool shapes themselves are various, and there are some stools that are difficult to collect, such as watery stools.

Therefore, even if the stool floats above the water in the basin of the flush toilet and defecates it, the stool is maintained for the time required for collecting the stool. It is practiced to use a stool collection sheet that can be discarded.
That is, the stool collection sheet is required to be able to float for about 3 minutes, preferably 5 minutes or more with a stool of about 200 to 300 g, and to have water disintegration property that does not clog the toilet piping. Is done.

  As such a stool collection sheet, at least one surface of a sheet body made of water-soluble paper is subjected to a water-resistant treatment with a water-resistant treatment agent such as a water-resistant printing ink or a water-resistant resin coating agent (for example, see Patent Document 1). ), A sheet of water-soluble or water-dispersible film laminated with water-dispersible paper on one or both sides to add temporary water resistance (see, for example, Patent Document 2), water-soluble paper is irradiated with radiation and hydrolyzed. Sheets with adjusted properties (for example, see Patent Document 3) have been proposed.

  However, any of these sheets is complicated to manufacture and the manufacturing cost is high, and the water immersion time of the sheet is not always appropriate. There is a restriction in handling that the surface must float so as to touch the water surface.

Japanese Patent No. 3568810 JP-A-10-227787 JP 2003-185651 A

  In view of the above-mentioned problems of the background art, the present invention provides a stool collection sheet that can be manufactured at a low cost by a simple process and that has stool retention and water dispersibility in a balance necessary as a stool collection sheet. The purpose is to provide.

As a result of diligent research to solve the above-mentioned problems, the present inventors have prepared a water produced by combining a sizing agent that has not been used in a conventional stool collection sheet with adjustment of the pulp beating degree. It has been found that the problem can be solved by using dispersible paper. The present invention has been made based on such knowledge.
That is, the present invention
(1) A stool collection sheet for collecting stool excreted in a flush toilet, wherein the stool retention measured by the following method is 180 seconds or more depending on the combination of the sizing agent and the pulp beating degree. A basis sheet having a basis weight of 20 to 60 g / m ² , wherein the basis weight is adjusted to 300 seconds or less.
Stool retention: Float a test paper of 250 mm in length and breadth on a bat containing water, place a petri dish with a weight of 200 g in the center of the test paper, and time to sink. Water dispersibility: 150 mL of water in a 200 mL beaker Put in a stirrer and stir at a speed that makes the vortex depth 25 mm, put test paper of 25 mm in each length and breadth into this, time until the test piece becomes a quarter, and (2) stool retention (1) The stool collection sheet having a property of 300 seconds or more.

  The stool collection sheet according to the present invention can be manufactured at a low cost by a simple process, and has stool retention and water dispersibility in a balance necessary for a stool collection sheet.

The stool collection sheet of the present invention comprises water-dispersible paper in which stool retention is adjusted to 180 seconds or more and water dispersibility is adjusted to 300 seconds or less by combining sizing agent and pulp beating degree adjustment. It is.
The water-dispersible paper here is a sheet having a performance capable of being processed without causing clogging of pipes by being dispersed in water by flowing water after the end of stool collection.
Raw pulp for water-dispersible paper includes natural pulp made of wood fiber, bast fiber, scabbard fiber, etc., recycled paper pulp that is recycled material, synthetic fiber such as nylon fiber, rayon fiber, polyester fiber, and fibrillated polyethylene. The pulp used as general papermaking raw materials, such as a synthetic pulp represented, is mentioned. In the present invention, since the used stool collection sheet is finally disposed of together with the stool at the sewage treatment facility, it is preferable to use natural pulp or waste paper pulp having biodegradability. Furthermore, from the viewpoint of economy, wood pulp using wood fibers is the most suitable among natural pulps.
Specific examples of the wood pulp include NBKP (conifer bleached kraft pulp), NBSP (coniferous sulfite pulp), LBKP (hardwood bleached kraft pulp) LBSP (hardwood sulfite pulp), and the like.

The raw material pulp is used after being adjusted to a suitable freeness by beating. Freeness is adjusted by the type and composition of the pulp to be used in order to maintain predetermined fecal retention and water dispersibility.
For example, when NBKP and LBKP are mixed and used as raw pulp, 150 mL or more is preferable and required for freeness (JIS P 8121 Canadian Standard Freeness Test Method) to obtain the required water dispersibility. In order to obtain stool retention, 500 mL or less is preferable.

  The sizing agent is not particularly limited, and any conventionally known sizing agent can be used. A rosin sizing agent, a petroleum resin sizing agent (synthetic sizing agent), an alkyl ketene dimer (AKD), or an alkenyl succinic anhydride ( ASA) and the like.

The amount of sizing agent used depends on the type of sizing agent and the freeness of the raw pulp to maintain the prescribed stool retention and water dispersibility, and the sizing effect is relatively weak, such as rosin sizing agent and petroleum resin sizing agent. In the sizing agent, in order to obtain the required stool retention, the freeness needs to be 0.2 parts by mass or more per 100 parts by mass of the raw pulp when the freeness is around 200 mL, and to obtain the required water dispersibility. It is necessary that the amount be 0.5 parts by mass or less per 100 parts by mass of the raw material pulp. When the freeness is around 400 mL, it is necessary to be 0.5 parts by mass or more per 100 parts by mass of the raw material pulp, and in order to obtain the required water dispersibility, it is 1.0 part by mass or less per 100 parts by mass of the raw material pulp. It is necessary. In addition, in the case of a sizing agent having a strong size effect such as an AKD sizing agent and an ASA sizing agent, in order to obtain the required stool retention, it is necessary that the free pulp is about 0.1 parts by mass or more per 100 parts by weight of raw pulp at around 200 mL In order to obtain the required water dispersibility, it is necessary to be 0.3 parts by mass or less per 100 parts by mass of the raw material pulp. Around 400 mL of freeness, it is necessary to be 0.3 parts by mass or more per 100 parts by weight of raw pulp, and in order to obtain the required water dispersibility, it is 0.5 parts by mass or less per 100 parts by mass of raw pulp. is required.
That is, the preferable use amount of the sizing agent varies depending on the beating degree of the raw pulp and the size effect of the sizing agent.

The stool collection sheet of the present invention is manufactured by papermaking a sample containing sized pulp.
The paper material can contain an internal additive agent such as a filler and a colorant, if necessary, as long as the object of the present invention is not impaired.
The paper making method is not particularly limited, and any of methods using various conventionally known paper machines such as a long net paper machine, a circular net paper machine, and a single net paper machine can be applied.

The basis weight of the stool collection sheet needs to be 20 g / m ² or more in order to obtain the required stool retention, and 60 g / m ² or less to obtain the required water dispersibility. It is necessary to be. That is, the basis weight of the adoption flights sheets must be ^{20~60g / m 2, 30~50g / m} 2 is preferred.

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.
The measurement / evaluation methods performed in the examples are shown below.
(1) Fecal retention: A test paper measuring 250 mm in length and breadth is floated on a bat containing water, and a petri dish with a weight of 200 g is placed in the center of the test paper, and the time until sinking is measured. 180 seconds or more is excellent in stool retention, and 300 seconds or more is particularly excellent in stool retention.
(2) Water dispersibility: Put 150 mL of water in a 200 mL beaker and stir with a magnetic stirrer at a speed where the vortex depth is 25 mm. Time until the specimen becomes a quarter. The water dispersibility is excellent for 300 seconds or less.
(3) Comprehensive evaluation: From the measurement results of fecal retention and water dispersibility, the suitability as a stool collection sheet is evaluated according to the following criteria.
Δ: Suitable (stool retention is good and water dispersibility is excellent)


×: unsuitable (feces retention is inferior and water dispersibility is inferior)

Example 1
In each case, a pulp slurry was prepared by mixing NBKP and LBKP beaten to a freeness of 190 mL at a mass ratio of 4: 6. In this pulp slurry, 0.1 part by mass of rosin sizing agent (size agent, manufactured by Modern Chemical Co., Ltd., trade name: Perosa E3600) with respect to 100 parts by mass of pulp is 1.0 part by mass with respect to 100 parts by mass of pulp. The sulfuric acid band was added to fix the rosin sizing agent to the pulp.
The obtained pulp slurry was paper-made to obtain a stool collection sheet having a basis weight of 40 g / m ² .
The stool retention and water dispersibility of this stool collection sheet were measured and subjected to comprehensive evaluation. The results shown in Table 1 were obtained.

Example 2
It implemented like Example 1 except having changed the usage-amount of the rosin type sizing agent into 0.2 mass part with respect to 100 mass parts of raw material pulp, and obtained the sheet | seat for stool collection of 40 g / m < ² > of basic weight.
The stool retention and water dispersibility of this stool collection sheet were measured and subjected to comprehensive evaluation. The results shown in Table 1 were obtained.

Example 3
It implemented like Example 1 except having changed the usage-amount of the rosin type sizing agent into 0.3 mass part with respect to 100 mass parts of raw material pulp, and obtained the sheet | seat for stool collection of 40 g / m < ² > of basic weight.
The stool retention and water dispersibility of this stool collection sheet were measured and subjected to comprehensive evaluation. The results shown in Table 1 were obtained.

Example 4
It implemented like Example 1 except having changed the usage-amount of the rosin type sizing agent into 0.5 mass part with respect to 100 mass parts of raw material pulp, and obtained the sheet | seat for stool collection of 40 g / m < ² > of basic weight.
The stool retention and water dispersibility of this stool collection sheet were measured and subjected to comprehensive evaluation. The results shown in Table 1 were obtained.

Comparative Example 1
The same procedure as in Example 1 was carried out except that the amount of rosin sizing agent used was zero, and a stool collection sheet having a basis weight of 40 g / m ² was obtained.
The stool retention and water dispersibility of this stool collection sheet were measured and subjected to comprehensive evaluation. The results shown in Table 1 were obtained.

Example 5
In each case, a pulp slurry was prepared by mixing NBKP and LBKP beaten to a freeness of 400 mL at a mass ratio of 4: 6. In this pulp slurry, 0.3 part by mass of an AKD sizing agent (trade name: AD1606, manufactured by Seiko PMC Co., Ltd.) was added to 100 parts by mass of the absolute dry mass of the pulp and mixed well.
The obtained pulp slurry was paper-made to obtain a stool collection sheet having a basis weight of 40 g / m ² .
The stool collection sheet was subjected to comprehensive evaluation by measuring stool retention and water dispersibility, and the results shown in Table 1 were obtained.

Example 6
The same procedure as in Example 5 was carried out except that the amount of the AKD sizing agent was changed to 0.5 parts by mass with respect to 100 parts by mass of the raw material pulp to obtain a stool collection sheet having a basis weight of 40 g / m ² .
The stool retention and water dispersibility of this stool collection sheet were measured and subjected to comprehensive evaluation. The results shown in Table 1 were obtained.

Comparative Example 2
The same procedure as in Example 5 was carried out except that the amount of the AKD sizing agent was zero, and a stool collection sheet having a basis weight of 40 g / m ² was obtained.
The stool retention and water dispersibility of this stool collection sheet were measured and subjected to comprehensive evaluation. The results shown in Table 1 were obtained.

Example 7
In each case, a pulp slurry was prepared by mixing NBKP and LBKP beaten to a freeness of 450 mL at a mass ratio of 4: 6. In this pulp slurry, 0.3 parts by mass of rosin sizing agent (size agent, manufactured by Modern Chemical Co., Ltd., trade name: Perosa E3600) with respect to 100 parts by mass of pulp is 1.0 part by mass with respect to 100 parts by mass of pulp. The sulfuric acid band was added to fix the rosin sizing agent to the pulp.
The obtained pulp slurry was paper-made to obtain a stool collection sheet having a basis weight of 40 g / m ² .
The stool retention and water dispersibility of this stool collection sheet were measured and subjected to comprehensive evaluation. The results shown in Table 1 were obtained.

Example 8
Except having changed the usage-amount of the rosin-type sizing agent into 0.5 mass part with respect to 100 mass parts of raw material pulp, it implemented similarly to Example 8 and obtained the sheet | seat for stool collection of 40 g / m < ² > of basic weight.
The stool retention and water dispersibility of this stool collection sheet were measured and subjected to comprehensive evaluation. The results shown in Table 1 were obtained.

Comparative Example 3
The same procedure as in Example 8 was carried out except that the amount of rosin sizing agent used was zero, and a stool collection sheet having a basis weight of 40 g / m ² was obtained.
The stool retention and water dispersibility of this stool collection sheet were measured and subjected to comprehensive evaluation. The results shown in Table 1 were obtained.

Example 9
In each case, a pulp slurry was prepared by mixing NBKP and LBKP beaten to a freeness of 150 mL at a mass ratio of 4: 6. In this pulp slurry, 0.1 part by mass of an AKD sizing agent (trade name: AD1606, manufactured by Seiko PMC Co., Ltd.) was added to 100 parts by mass of the absolute dry mass of the pulp and mixed well.
The obtained pulp slurry was paper-made to obtain a stool collection sheet having a basis weight of 40 g / m ² .
The stool collection sheet was subjected to comprehensive evaluation by measuring stool retention and water dispersibility, and the results shown in Table 1 were obtained.

Example 10
Except having changed the usage-amount of the AKD sizing agent into 0.2 mass part with respect to 100 mass parts of raw material pulp, it implemented similarly to Example 9 and obtained the sheet for stool collection of 40 g / m < ² > of basic weight.
The stool retention and water dispersibility of this stool collection sheet were measured and subjected to comprehensive evaluation. The results shown in Table 1 were obtained.

Example 11
Except having changed the usage-amount of the AKD size agent into 0.3 mass part with respect to 100 mass parts of raw material pulp, it implemented similarly to Example 9 and obtained the sheet | seat for stool collection of 40 g / m < ² > of basic weight.
The stool retention and water dispersibility of this stool collection sheet were measured and subjected to comprehensive evaluation. The results shown in Table 1 were obtained.

Comparative Example 4
The same procedure as in Example 9 was carried out except that the amount of AKD sizing agent used was zero, and a stool collection sheet having a basis weight of 40 g / m ² was obtained.
The stool retention and water dispersibility of this stool collection sheet were measured and subjected to comprehensive evaluation. The results shown in Table 1 were obtained.

Example 12
A pulp slurry in which NBKP and LBKP were mixed at a mass ratio of 4: 6 was adjusted to a freeness of 200 mL by a disc refiner. In this pulp slurry, 0.2 parts by mass of a rosin sizing agent (size agent, manufactured by Modern Chemical Co., Ltd., trade name: Perosa E3600) with respect to 100 parts by mass of pulp is 1.0 part by mass with respect to 100 parts by mass of pulp. The sulfuric acid band was added to fix the rosin sizing agent to the pulp.
The obtained pulp slurry was subjected to paper making with a long paper machine to obtain a stool collection sheet having a basis weight of 40 g / m ² .
The stool retention and water dispersibility of this stool collection sheet were measured and subjected to comprehensive evaluation. The results shown in Table 1 were obtained.

  The stool collection sheet of the present invention can be manufactured at a low cost by a simple process, and also has stool retention and water dispersibility in a necessary balance as a stool collection sheet, which is important for health management. It can fully meet the increasing demand as the market grows.

Claims (2)

A stool collection sheet for collecting stool excreted in a flush toilet, wherein the stool retention measured by the following method is 180 seconds or more and the water dispersibility is 300 seconds by a combination of sizing agent and pulp beating degree. A stool collection sheet having a basis weight of 20 to 60 g / m ^2, which is adjusted as follows.
Stool retention: Float a test paper 250 mm in length and width on a bat containing water, place a petri dish with a weight of 200 g in the center of the test paper, and time to sink. Water dispersibility: 150 ml of water in a 200 ml beaker Put in a stirrer and stir at a speed that makes the vortex depth 25 mm, put test paper of 25 mm in each length and width into this, and the time until the test piece becomes a quarter The stool collection sheet according to claim 1, wherein the stool retention is 300 seconds or more.