JP2012130285A - Toilet sheet for pet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deodorant toilet sheet for pet with which a pet owner can visually check the presence or absence of excretions.SOLUTION: The toilet sheet 1 for pet includes a light-permeable and liquid-permeable surface sheet 2 and an absorbent 4. Between the absorbent 4 and the surface sheet 2, a colored sheet 5 containing a black component and an intermediate sheet 6 are arranged in this order upward from the absorbent 4 side. The colored sheet 5 is a liquid-permeable sheet, and the intermediate sheet 6 is a sheet that has an Lvalue larger than the black component, can retain a liquid, and has a light transmittance lower than the surface sheet 2.

Description

  The present invention relates to a pet toilet sheet used for the treatment of excretory fluid of pets (small animals) such as dogs and cats.

  Conventionally, when pets such as dogs and cats are raised in a house, toilet sheets have been used to absorb excreta such as urine excreted by pets (for example, see Patent Document 1 below). The sheet described in the document includes a liquid-permeable top sheet, a liquid-impermeable back sheet, and a liquid-retaining absorbent such as a water-absorbing polymer interposed between the two sheets. Such a sheet is generally used by being placed on the floor, and when a pet urinates on it, excreta is absorbed by the absorbability of the absorber. Depending on the size of the pet, such a sheet is usually replaced with a new sheet after absorbing one to several times of urine or after one day of use.

  When urination is made on a pet toilet seat, the urine odor spreads in the house. In order to prevent this, a sheet having a deodorizing function is known (for example, Patent Documents 2 to 4). According to these techniques, an effective deodorizing effect on urine odor is expected.

JP 2003-92940 A JP-A-1-120234 JP 2008-14014 A JP 2008-161150 A

  In a toilet sheet containing a deodorant, the higher the deodorant performance, the more difficult it is to olfactorily determine the presence or absence of pet urination. In particular, as in Patent Document 2, when a black material such as activated carbon is used as a deodorant, the color of urine is invisible or extremely difficult to see, so the pet owner also visually recognizes the presence or absence of urination. It becomes difficult. In particular, when the behavior of the pet urinating is missed, it is difficult to determine the presence or absence of urination after a long time.

  Accordingly, an object of the present invention is to provide a pet toilet sheet that is easy for a pet owner to understand whether or not a pet is urinating, even though it is difficult for a customer or the like to know that the sheet is after urination. .

The present invention is a pet toilet sheet including a light-permeable liquid-permeable surface sheet and a liquid-retaining absorbent disposed on the excretion-side surface, and between the surface sheet and the absorbent body , a liquid-permeable colored sheet containing a black-based component, between the organic color sheet and the topsheet, the blackish greater L ^* value than the component, and a lower liquid retained light transmittance than the surface sheet The problem is solved by providing a pet toilet seat on which a possible colored liquid-permeable intermediate sheet is arranged.

  The pet toilet seat of the present invention makes it easy for pet owners to know the presence or absence of urination for a while immediately after urination, so it is useful for determining the replacement time. Can be used for a long time.

FIG. 1 is a perspective view schematically showing an embodiment of a pet toilet sheet of the present invention. FIG. 2 is a cross-sectional view schematically showing a cross section taken along line II of FIG. FIG. 3 is a perspective view of the deodorizing sheet 5 of FIG. 4 is a cross-sectional view taken along line II-II in FIG. FIG. 5 is a view showing another embodiment of the pet toilet seat of the present invention. FIG. 6 is a view showing still another embodiment of the pet toilet seat of the present invention.

  Hereinafter, the toilet seat for pets of the present invention will be described based on a preferred embodiment thereof with reference to the drawings. A pet toilet sheet 1 (hereinafter, also referred to as “toilet sheet 1”) of the present embodiment includes a liquid-permeable surface sheet 2 disposed on the excretion side surface, as shown in FIG. 1 and FIG. A liquid-retaining absorbent body 4 is provided between the liquid-impermeable back sheet 3 and the sheets 2 and 3 that are disposed far away. Between the surface sheet 2 and the absorber 4, a deodorizing sheet 5 as a colored sheet containing a black deodorant as a black component is provided, and further, an intermediate sheet is provided between the deodorizing sheet 5 and the surface sheet 2. 6 is provided.

  In the pet toilet seat or the material constituting the pet toilet seat of the present invention, the side closer to the pet excretion is the “excretion side surface” or “upper side”, and the far side is the “excretion side far” or “ Called “lower side”. A direction perpendicular to the vertical direction is referred to as a “plane direction”.

  The topsheet 2 is light transmissive and liquid permeable. Here, the light transmissive property means that the light irradiated from the opposite surface can be seen when the light normally used at home is irradiated from one surface, that is, when the light is irradiated from the upper side of the top sheet. The member provided with such a property that a member disposed in contact with the surface opposite to the irradiation side (lower side) can be visually recognized. More specifically, a reflectance / transmittance meter (trade name “HR-100” manufactured by Murakami Color Research Laboratory Co., Ltd.) is used as the reflectance according to the total light transmittance measuring method based on the JIS K 7105 method. Using 10 points on the surface sheet, measure the value of total light transmittance Tt with A light source, take the average value as light transmittance, and the value is 30-90%, especially 40-80% Are preferred. Within this range, in the mechanism described later, the presence or absence of urination is easy to see, and in the normal state, the color of the lower layer sheet is moderately shielded, creating a visually soft impression. It is preferable because it is easy to harmonize with the surroundings.

  As the surface sheet 2, for example, a nonwoven fabric or a porous film sheet can be used. Preferably, a material that has no or very low liquid retention and that allows the liquid to pass quickly downward is preferable. By using such a material, liquid residue on the surface is reduced, so that urine odor is less likely to be generated and diffused, and the deodorant sheet and urine are more likely to come into contact with each other. . Accordingly, the material of the top sheet 2 is preferably a non-woven fabric made of water-repellent fibers, a non-woven fabric obtained by hydrophilizing it, or a resinous porous film sheet.

In the case where a nonwoven fabric is used for the top sheet 2, when the pet is a dog or the like, it is preferable to have sufficient strength to perform operations such as scratching or digging up with mischief. Examples of such a nonwoven fabric include a heat roll nonwoven fabric, a spunbond nonwoven fabric, and an air-through nonwoven fabric. From the viewpoint of ensuring sufficient liquid permeability and mechanical strength, and economical efficiency, the basis weight of the nonwoven fabric is preferably 10 to 100 g / m ² , particularly preferably 15 to 40 g / m ² .

  As shown in FIG. 2, the liquid-impermeable back sheet 3 is disposed far away from the excretion side, and is located at the lowest side in the present embodiment (toilet sheet 1), so that it is used. In this case, it becomes a part that comes into direct contact with the toilet tray or floor used together with the toilet seat. Therefore, it is preferable that the back sheet 3 has no moisture permeability or low moisture, because moisture does not easily accumulate on the floor or the toilet tray even if the toilet sheet is left after urine is excreted. As the back sheet 3, a water-repellent nonwoven fabric having a high water pressure resistance such as a liquid-impermeable film made of a synthetic resin or a spunbond-meltblown-spunbond laminated (SMS) nonwoven fabric can be used. From the point of view, it is preferable to use a synthetic resin film.

  The liquid-retaining absorbent 4 is composed of a mixture of liquid-absorbing fibers made of cellulose fibers such as pulp and particles made of a hydrogel material such as a super-absorbent polymer, or the mixture The body is covered with a liquid-permeable sheet made of tissue paper, nonwoven fabric, etc., and further has a pal press structure in which a superabsorbent polymer is sandwiched between two nonwoven fabrics in a swellable state. And an absorbent sheet described in JP-A-8-246395 can be used. In this embodiment (toilet sheet 1), the absorbent body 4 mainly composed of a mixture of a water-absorbing polymer, defibrated pulp, etc. is unexposed and covered with pulp paper to form an absorbent structure.

  As shown in FIG. 1, the shape of the toilet seat 1 in plan view is rectangular, but the shape in plan view is not particularly limited, and may be, for example, an ellipse or a polygon. The shape of the absorbent body 4 constituting the toilet seat 1 in plan view is not particularly limited, but preferably coincides with the shape of the toilet seat 1 in plan view, and the toilet seat 1 has a rectangular shape. The top sheet 2 and the back sheet 3 constituting the toilet sheet 1 extend outward from the outer periphery of the absorbent body 4, and the toilet sheet 1 is formed in the same shape and size as each other. It has a contour that matches the contour of.

As shown in FIG. 2, a liquid-permeable deodorant sheet 5 containing a black deodorant is disposed between the top sheet 2 and the absorber 4, that is, above the absorber 4. In the present invention, the “black color” means that the L ^* value in the CIE-L ^* a ^* b ^* color system is 20 or less, preferably 15 or less, more preferably 10 or less. Here, the "L ^* value of the black-based deodorant" refers to a L ^* value of itself blackish deodorant, in the case of granular or the like is measured laid without a gap as possible to the petri dish or the like . In this specification, for example, a black glass deodorant is spread on a transparent glass petri dish having a mouth inner diameter of 30 mm and a height of 15 mm, and measurement is performed with a color difference meter without a lid. It may replace with this and may use the color difference meter provided with the cell and attachment which can be filled with a powder body. In the present embodiment (toilet sheet 1), the deodorizing sheet 5 is unexposed together with the absorbent body 4 and is covered with pulp paper to constitute a part of the absorbent structure. By disposing the deodorizing sheet 5 on the upper side of the absorber 4, the urine odor absorbed and held by the absorber 4 can be effectively deodorized.
The shape of the deodorant sheet 5 in plan view is not particularly limited, but the toilet sheet 1 is formed in the same shape and size as the absorber 4. The deodorant sheet 5 has an L ^* value of 25 or less, particularly 20 or less, more preferably 15 or less, from the viewpoint of shielding the presence of urine after a long period of time. preferable. Moreover, when a black-type component is a deodorizer, it is preferable at the point which ensures sufficient deodorizing function. In addition, the measuring method of L ^* value of the deodorizing sheet 5 is the same as the measuring method of the intermediate sheet 6 mentioned later.

As shown in FIGS. 3 and 4, the deodorizing sheet 5 in the present embodiment (toilet sheet 1) includes a deodorizing layer 51 containing activated carbon as a black deodorant, an upper pulp sheet 52 and a lower pulp. The structure is sandwiched between the sheets 53. The deodorant layer 51 and the pulp sheets 52 and 53 are laminated by paper making or bonding using an adhesive or the like. The size of the deodorizing layer 51 is slightly smaller than the size of the pulp sheets 52 and 53, so that the joining portions 5s of the two pulp sheets 52 and 53 are formed on the left and right sides so that the deodorizing layer 51 containing activated carbon is interposed and enclosed. To. Therefore, the lengths of both sheets 52 and 53 are set to be longer to the left and right than the deodorizing layer 51 and extend beyond the left and right end edges 51 t of the deodorizing layer 51. On the other hand, the lengths of the deodorizing layer 51 and the pulp sheets 52 and 53 are aligned in the front-rear direction. Although the thickness of the deodorizing sheet 5 should just be adjusted suitably according to a use, Preferably it is 0.1-2.0 mm, More preferably, it is 0.2-0.5 mm. The thickness of the pulp sheets 52 and 53 may be appropriately adjusted according to the use, but is preferably 0.1 to 2.0 mm, and more preferably 0.2 to 0.5 mm.
In the present invention, unless otherwise specified, the thickness of the sheet material is a value measured under a load of 0.245 kPa with a laser thickness meter (trade name: LK-080) manufactured by Keyence Corporation.

  The deodorizing sheet 5 in this embodiment (toilet sheet 1) is formed by interposing a deodorizing layer 51 containing a non-antibacterial black deodorant between two pulp sheets (hydrophilic) 52 and 53. (See FIG. 3). The deodorizing layer 51 is mainly composed of a porous black deodorant and a fiber raw material that holds the black deodorant. As a fiber raw material, known natural fibers such as non-wood pulp such as straw and cotton can be used in addition to wood pulp such as NBKP and LBKP. Further, for the purpose of improving the sheet strength, synthetic fibers such as polyethylene fibers may be appropriately mixed. The content rate of the fiber raw material in the deodorizing layer 51 becomes like this. Preferably it is 50-99 mass%, More preferably, it is 70-97 mass%. By setting it as 50 mass% or more, sheet | seat strength and flexibility become sufficient, and a deodorizing effect is fully show | played by setting it as 99 mass% or less.

  The black deodorant constituting the deodorant layer 51 of the deodorant sheet 5 is porous, and the pore volume of 2 to 20 nm in pore diameter is 0.2 ml / g in 1 g of the porous black deodorant. The above are preferable, and those having the pores are more preferable so as to be 0.6 ml / g or more. If the pore diameter is too small, the adsorption rate may be slow, such as when the particle size is large, and the deodorizing function may not be exhibited. If the pore volume is too small, the required amount of deodorant increases, which may increase the cost of the product and may not provide sufficient deodorizing ability.

  It is preferable that at least a part of the black deodorant of the deodorant sheet 5 is hydrophobic. That at least a part is hydrophobic preferably means that at least the surface is hydrophobic, which makes the porous black deodorant difficult to wet and deodorizing performance by getting wet with excrement. Decreases. The average particle size of the porous black deodorant is preferably 1 to 500 μm from the viewpoint of fixability, dispersibility, and texture when introduced into the toilet seat 1.

  Various black deodorants for the deodorant sheet 5 can be used, and activated carbon, Bincho charcoal, bamboo charcoal, coffee husk, and the like can be used. Among these, it is preferable to use activated carbon. As the activated carbon, water vapor activated activated carbon or chemical activated carbon can be used, but chemical activated activated carbon is preferable because it has a high deodorizing effect on urine odor. Examples of the chemical activated carbon include zinc chloride activated activated carbon and phosphoric acid activated activated carbon.

The content of the black deodorant in the deodorant sheet 5 is preferably such that the volume of pores of 2 to 20 nm is 0.3 ml / 100 g or more with respect to the saturated absorption amount (g) of the toilet sheet, 0.6 ml / 100g or more is more preferable. By setting it to 0.3 ml / 100 g or more, a sufficient deodorizing effect can be exhibited. The saturated absorption amount is measured as follows.
Saturated absorption amount: Toilet sheet is immersed in physiological saline for 30 minutes. After 30 minutes, the absorbent article is pulled up, drained for 30 minutes, and the weight (g) before immersion is subtracted from the weight (g) after draining, and this is defined as the saturated absorption amount. The deodorant layer 51 can be obtained from a slurry containing a porous black deodorant and a fiber raw material and molded into a sheet by a normal wet papermaking method as usual.

  The deodorant layer 51 and the pulp sheets 52 and 53 obtained as described above are combined with each other on a paper machine as usual, or bonded with an adhesive using a bonding machine. Thereby, it can be set as the deodorizing sheet 5 which interposed the deodorizing layer 51 between the two pulp sheets. Thereafter, the sheet width is adjusted to a desired sheet width in the slitting process, and the deodorant sheet 5 of the present embodiment (toilet sheet 1) can be obtained. Therefore, it is preferable that the black deodorant does not fall off and the product and the production line are not contaminated.

  As the pulp sheets 52 and 53 constituting the deodorizing sheet 5, a liquid permeable material is used, and specifically, paper, nonwoven fabric or the like is used. In the case of paper, the same fiber material as the deodorant layer 51 can be used. Moreover, when it is set as a nonwoven fabric, all well-known nonwoven fabrics, such as a spunlace nonwoven fabric and a spun bond nonwoven fabric, can be used, for example. In the present embodiment (toilet sheet 1), paper is used for the pulp sheets 52 and 53, and liquid such as urine diffuses in the surface direction on the pulp sheet when it comes into contact with the pulp sheets 52 and 53. Since the part remains on the pulp sheet for a while, there is an effect of raising the color of the black deodorant, which is preferable. In particular, it is preferable to use pulp that has not been exposed to the pulp sheets 52 and 53 because the diffusibility in the surface direction is higher and the deodorizing effect and the shielding effect of the black deodorant can be added. Moreover, when using paper for the pulp sheets 52 and 53, it is possible to improve liquid diffusibility by using creped paper. As the creping process, it is preferable to use a dry crepe, since the crepe portion extends after the contact with the liquid and the area increases, so that the area where the color of the black deodorant is raised can be expected to increase.

In the present invention, between the deodorant sheet 5 and the top sheet 2, a colored L ^* value larger than that of the black deodorant and having a light transmittance lower than that of the top sheet 2 can be retained. A liquid permeable intermediate sheet 6 is disposed. In the present invention, “colored” means not only colorless and transparent but also white. In the present specification, “white” means that the L ^* value is 90 or more, and “white” means that the L ^* value is 80 or more. In the toilet sheet 1, the intermediate sheet 6 extends outward from the outer periphery of the absorbent body 4 and the deodorizing sheet 5, and the deodorizing sheet 5 is stacked on the upper side of the absorbent body 4 as shown in FIG. 2. Covered and wrapped.

  As shown in FIG. 2, the toilet sheet 1 includes an intermediate sheet 6 that encloses the absorbent body 4 and the deodorizing sheet 5 between the top sheet 2 and the back sheet 3, and the outer periphery of the wrapped intermediate sheet 6. It is formed by fixing the parts of the top sheet 2 and the back sheet 3 that extend outward more than each other. In addition, although the intermediate sheet 6 wraps the absorber 4 and the deodorizing sheet 5 in the toilet sheet 1, the intermediate sheet 6 does not have to be wrapped and is disposed between the deodorizing sheet 5 and the top sheet 2. That's fine. By arranging the intermediate sheet 6 between the deodorizing sheet 5 and the top sheet 2, the following effects are exhibited.

First, in the toilet sheet 1 before urination, the black deodorant black is shielded, and it is easy to balance the beauty of the toilet sheet used indoors and the indoor atmosphere. Further, immediately after urination, the black deodorant is made to stand up so that the pet owner can easily determine the presence or absence of urination that is difficult to understand olfactoryly by the deodorant. The visual effect immediately after urination is explained by the following mechanism. That is, when the pet urinates on the toilet sheet 1, the urine passes through the top sheet 2 and then reaches the intermediate sheet 6. Here, since the intermediate sheet 6 is capable of retaining liquid, it is pressed against the deodorizing sheet 5 located below it while retaining the liquid. Further, since the intermediate sheet 6 is also liquid permeable, most of the urine that reaches the intermediate sheet 6 is transmitted downward and delivered to the deodorizing sheet 5. At this time, the black color of the black deodorant present in the wet part of the pulp sheet 52 located on the upper side of the deodorant sheet 5 appears to be raised as compared with the non-wet part. Since the intermediate sheet 6 can hold the liquid, the time that it appears to be raised continues for a while, so that it is easy for the pet owner to visually recognize the presence or absence of urination from the surface sheet 2 side for a while immediately after urination. Become. Next, the urine delivered to the deodorant sheet 5 passes further downward and is finally held by the absorber 4. In the deodorizing sheet 5 through which the urine has passed, the black deodorant becomes less conspicuous, so that it becomes difficult to recognize the sheet after urination as time passes after urination. Therefore, when time elapses after urination, it becomes difficult for a customer who does not want to see the sheet after urination to recognize that the sheet is after urination. In addition, by changing the basis weight of the absorbent body 4 constituting the toilet seat 1, it is possible to adjust the time to make it difficult to recognize that the sheet is after urination, for example, about 20 to 40 minutes have passed since immediately after urination. Later, in order to make it difficult to identify the sheet after urination, the basis weight of the absorbent body 4 is preferably 50 to 300 g / m ² , particularly preferably 80 to 250 g / m ² .

The intermediate sheet 6 has an L ^* value of L ^* a ^* b ^* color system larger than that of a black deodorant, specifically, an L ^* value of 2 to 40, particularly 2 as compared with a black deodorant. It is preferable that it is higher by 30 to 30 or 25 because the black deodorant is easily lifted and visible when it is not used and when wet. Further, it is more preferable that the intermediate sheet 6 has an L ^* value larger than the deodorizing sheet 5.

Further, L ^* value of the intermediate sheet 6 2-30 than the L ^* value of deodorant sheet 5, in particular 5 to 30, that further 7-25 higher, preferably from the same viewpoint. Here, the L ^* value of the sheet only needs to be in the above-described relationship at a place where the black deodorant of the deodorant sheet 5 exists and where the intermediate sheet 6 overlaps the place. That is, in the case where the black deodorant is disposed only in the central portion and not in the peripheral portion of the deodorant sheet, the effect of the present invention is exhibited if the L ^* value is in the relationship in the central portion. Therefore, it is not necessary to have the relationship in the peripheral part.

The L ^* value of the intermediate sheet 6 is specifically 5 to 60, particularly 10 to 50, from the viewpoint of achieving a balance between the shielding effect when not in use and the aesthetics of the room, and after urination It is preferable from the viewpoint of visibility. The L ^* value of the intermediate sheet 6 can be measured with a color difference meter. For example, using a hand-held spectral color difference meter NF777 (trade name) manufactured by Nippon Denshoku Industries Co., Ltd., under the measurement conditions of illumination condition C, viewing angle condition 2 °, front light receiving condition 0/45 °, and luminous flux diameter φ10 mm, The reflected light of the intermediate sheets 6 corresponding to the number of sheets arranged on the sheet 1 can be measured and obtained. At this time, it is preferable to measure using a white plate having an L ^* value of 95 or more as the background plate.

  Although the intermediate sheet 6 is light transmissive, the light transmissive property is lower than that of the top sheet 2. For this reason, it is easy to check the presence or absence of urination from the surface sheet side while being excellent in shielding when not in use. The difference in light transmittance between the top sheet 2 and the intermediate sheet 6 is preferably 20 to 90%, particularly preferably 25 to 70%. In addition, the measuring method of light transmittance is performed similarly to the measuring method in the surface sheet 2.

When the toilet sheet 1 of the present invention has an L ^* value measured from the upper side of the top sheet 2 of 4 to 70, in particular 10 to 65, and further 20 to 65, the shielding effect when not in use and the aesthetics of the room It is preferable from the viewpoint of achieving both harmony and from the viewpoint of visibility after urination.

  The intermediate sheet 6 is liquid permeable and can hold liquid. Here, “holding liquid” is not limited to the semi-permanent holding ability required for the absorbent body 4, but also includes the case of having a temporary holding force. Since the intermediate sheet 6 exists above the deodorizing sheet 5, it is preferable that the intermediate sheet 6 has a temporary holding force because it is difficult to leak odors to the outside. Examples of the material that is liquid permeable and capable of holding liquid include paper products including thin paper such as tissue paper, cardboard paper, and hydrophilic non-woven fabrics and woven fabrics containing hydrophilic fibers as constituents. .

When the sheet constituting the intermediate sheet 6 is a paper product, when the basis weight of the constituent sheet is 10 to 50 g / m ² , particularly 20 to 45 g / m ² , the balance between liquid permeability and liquid retention is good. Moreover, since the shielding effect is also sufficient, it is preferable. In particular, it is preferable to use creped paper from the viewpoint of both the shielding properties when not in use and the visibility after urination. As a fiber raw material of the intermediate sheet 6, known natural fibers such as non-wood pulp such as straw and cotton can be used in addition to wood pulp such as NBKP and LBKP. Further, for the purpose of improving the sheet strength, synthetic fibers such as polyethylene fibers may be appropriately mixed.

  A preferred sheet material for the intermediate sheet 6 is unbleached pulp paper. Unbleached pulp paper itself is brown and has excellent shielding properties, is given deodorizing performance by wood components, and has moderate hydrophilicity due to components such as lignin in the surface direction. The balance between liquid diffusibility and downward liquid permeability is good. For this reason, since the liquid diffusion area after urination is moderate, the presence or absence of urination is easily visible. Further, if pulp paper that is not exposed to the intermediate sheet 6 is used, the black deodorant shielding effect of the deodorant sheet 5 can be added.

In the toilet seat of the present invention, it is preferable that the deodorizing sheet 5 has a higher liquid diffusion rate than the intermediate sheet 6. By doing so, the liquid tends to remain on the surface of the deodorizing sheet 5 for a relatively long time, and urine is easily retained in a wide area of the intermediate sheet 6 by spreading in the surface direction. Therefore, the presence or absence of urination can be easily visually recognized even after a relatively long time has elapsed since urination. In order to make the liquid absorption rate such a relationship, while using a method of lowering the hydrophilicity of the deodorant sheet 5 than the intermediate sheet 6 as a constituent sheet material, or using a sheet material with an equivalent absorption rate The method etc. which make the deodorizing agent used for the deodorizing sheet 5 hydrophobic are mentioned. It is preferable to use the latter method because deodorization performance over a long period of time can be obtained, and when a large amount of urine is excreted at once, deodorization is performed quickly. The absorption rate is measured as follows.
Method for measuring liquid diffusion rate: Each sheet is left in a tensioned state on a petri dish with a diameter of 30 mm, and 5 ml of physiological saline colored red from above is dropped into one place over 10 seconds using a pipette. The spread area of the liquid after the completion of the dropping was measured, and this was defined as the diffusion rate.

  According to the toilet seat of the present invention, the presence or absence of urination can be visually recognized even after a lapse of time after urination. Moreover, since the color of the black deodorant can be shielded to give a soft impression, it is easy to harmonize with the indoor environment. If a black deodorant is used as the black component, the above-described effects can be achieved while sufficiently exerting the deodorizing effect and suppressing the spread of urine odor in the room. Therefore, in a home where pets are kept indoors, it is easy to determine the replacement timing of the toilet seat while reducing the burden of worrying about odors and aesthetics.

  As mentioned above, although the toilet sheet for pets of this invention was demonstrated based on preferable embodiment, this invention is not limited to these. For example, it is possible to insert another sheet member as long as the effects of the present invention are not impaired. FIGS. 5 and 6 show pet toilet sheets 1B and 1C, respectively, which are modifications of the above embodiment. In the pet toilet sheet 1B, a white sheet 7 is disposed between the intermediate sheet 6 and the surface sheet 2 (FIG. 5), and in the pet toilet sheet 1C, between the intermediate sheet 6 and the deodorizing sheet 5 (FIG. 6). ), A white sheet 7 is disposed. Although not shown, white sheets 7 may be further disposed between the intermediate sheet 6 and the top sheet 2 and between the intermediate sheet 6 and the deodorizing sheet 5 (FIG. 7). The white sheet 7 can be made of paper or non-woven fabric as long as it can visually recognize the colors of the intermediate sheet 6 and the deodorizing sheet 5 when urination is performed and the sheet gets wet. When using an intermediate sheet with deodorant or antibacterial performance (for example, unbleached pulp paper), arrange a liquid-holding sheet as a white sheet as shown in FIG. The visible time can be further increased. Further, as the black component, it is also possible to use a black dye, black powder or the like instead of the deodorant.

  Moreover, you may mix | blend various additives with the constituent material of the toilet seat for pets of this invention in the range which does not impair the effect of this invention. Examples of the additive include antibacterial agents, colorless or light-colored deodorants, and fragrances.

  The pet toilet seat 1 of the present embodiment is suitable as a toilet seat for animals such as dogs and cats, but can also be used as a toilet seat for animals such as rabbits and hamsters.

DESCRIPTION OF SYMBOLS 1 Pet toilet sheet 2 Top sheet 3 Back sheet 4 Absorber 5 Deodorant sheet 51 Deodorant layer containing black type deodorant 52, 53 Pulp sheet 5s Joint part 6 Intermediate sheet

Claims (6)

A pet toilet sheet comprising a liquid-permeable surface sheet that is light transmissive and disposed on the excretion side surface, and a liquid-retaining absorbent body,
Between the surface sheet and the absorber, a liquid permeable colored sheet containing a black component, and between the colored sheet and the surface sheet, the L ^* value is larger than the black component, and A toilet sheet for pets in which a colored liquid-permeable intermediate sheet capable of holding liquid with a light transmittance lower than that of the top sheet is arranged.   The pet toilet seat according to claim 1, wherein the intermediate sheet is an unbleached pulp sheet.   The pet toilet sheet according to claim 1 or 2, wherein the colored sheet is obtained by sandwiching the black component between two unbleached pulp sheets.   The toilet sheet for pets according to any one of claims 1 to 3, wherein the colored sheet is faster in liquid diffusion rate than the intermediate sheet. The pet toilet seat according to any one of claims 1 to 4, wherein a difference in L ^* value of the L ^* a ^* b ^* color system of the colored sheet and the intermediate sheet is 2 to 30.   The pet toilet sheet according to any one of claims 1 to 5, wherein the black component is a deodorant.

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