JP2022027103A - Animal excrement disposal sheet - Google Patents

Abstract

To provide an animal excrement disposal sheet with which a pet can grasp a right excretion position and an owner can grasp a health status of a pet from an amount and a color of urine, a use part and the like.SOLUTION: An animal excrement disposal sheet includes a liquid permeable front sheet, a liquid impermeable rear sheet and an absorber disposed between those sheets. A whiteness in a region (A) where the absorber is present is 85.5 or higher in plan view.SELECTED DRAWING: Figure 3

Description

The present invention relates to an animal excrement treatment sheet used when breeding animals.

As an animal excrement treatment sheet for treating excrement excreted by pets such as dogs, a liquid-permeable front sheet, a liquid-impermeable back sheet, and an absorber located between these sheets are provided. Animal excrement treatment sheets are known (see, for example, Patent Document 1).

In addition, an animal excrement treatment sheet having a good concealing property for excrement excreted from pets is also known. For example, Patent Document 2 describes an animal excrement treatment sheet in which a colored sheet is arranged between a surface sheet and an absorber.

Japanese Patent Application Laid-Open No. 2003-92940 Japanese Unexamined Patent Publication No. 2012-130285

On the other hand, the proportion of elderly pets is increasing with the progress of pet health measures. Older pets may suffer from cataracts and other illnesses that may make their eyes worse. The eyes of pets suffering from cataracts have a small amount of light transmitted from the crystalline lens to the retina, making it difficult to grasp the contours of objects. Therefore, the animal excrement treatment sheet having a low degree of whiteness does not reflect light, and there is a problem of excretion failure due to the inability to recognize the correct excretion position.

Further, when the pet cannot be excreted in the correct position, it is difficult for the pet owner to confirm the pet's urine volume, urine color, place of use, etc., so that there is a problem that it is difficult to grasp the health condition of the pet.

The present invention has been made in view of the above circumstances, and is an animal excrement treatment sheet that allows a pet to grasp the correct excretion position and the owner to grasp the health condition of the pet from the urine volume, urine color, place of use, etc. The challenge is to provide.

In order to achieve the above object, the present invention includes the following aspects.

(1) The animal excrement treatment sheet according to one aspect of the present invention includes a liquid-permeable front surface sheet, a liquid-impermeable back surface sheet, and an absorber arranged between these sheets. In a plan view, the whiteness in the region (A) where the absorber is present is 85.5 or more.

According to this aspect, the whiteness in the region (A) is as high as 85.5 or more. Therefore, since the pet can easily grasp the area (A), it can be excreted at the correct position. In addition, the owner can grasp the amount of urine, the color of urine, and the place of use of the pet. Therefore, it is easy to grasp the health condition of the pet.

(2) The animal excrement treatment sheet according to (1) above has a difference in whiteness of 10 or more between the region (A) and the region (B) in which the absorber does not exist in a plan view. It may be.
(3) In the animal excrement treatment sheet according to (2) above, the whiteness of the portion where the region (B) is present may be 75 or less.

According to this aspect, since the difference in whiteness between the area (A) and the area (B) is 10 or more, the color contrast between the area (A) and the area (B) tends to be clear. Therefore, it is easy to recognize the target absorber excreted by the pet, and the pet can excrete in a more accurate and correct position. In addition, it becomes easier for the owner to grasp the urine volume, urine color, place of use, etc. of the pet. In addition, the owner can easily recognize the peripheral part of the sheet that has not been excreted, and can easily grasp the peripheral part by hand and process it.

(4) The animal excrement treatment sheet according to any one of (1) to (3) above has an absorption core in which the absorber is arranged on at least one surface of the absorption core and the absorption core. May include a denser intermediate layer.

According to this aspect, the absorber is more conspicuous because the absorber is provided with an intermediate layer having a higher density than the absorption core. Therefore, it is easy to recognize the target absorber excreted by the pet, and the pet can excrete in a more accurate and correct position. In addition, it becomes easier for the owner to grasp the urine volume, urine color, place of use, etc. of the pet.

(5) The animal excrement treatment sheet according to (4) above may have an absorption core having a basis weight of 15 g / m ² to 480 g / m ² .

According to this aspect, it is easy to increase the whiteness of the region (A). Therefore, it is easy to recognize the target absorber excreted by the pet, and the pet can excrete in a more accurate and correct position. In addition, it becomes easier for the owner to grasp the urine volume, urine color, place of use, etc. of the pet. In addition, the owner can easily recognize the peripheral part of the sheet that has not been excreted, and can easily grasp the peripheral part by hand and process it.

(6) The animal excrement treatment sheet according to any one of (1) to (5) above may include a member whose surface sheet has a whiteness of 60 or more.

According to this aspect, since the glossiness of the surface of the animal excrement treatment sheet is sufficiently low, it is easy to visually recognize the target absorber excreted by the pet. In addition, since the whiteness of the region (A) is easily noticeable, the owner can more easily grasp the pet's urine volume, urine color, place of use, and the like.

(7) In the animal excrement treatment sheet according to any one of (1) to (6) above, the region (A) includes a region (A1) having a whiteness of 85.5 or more and the region (A1). It may have a region (A2) having a higher degree of whiteness than A1).

According to this aspect, the color contrast between the region (A1) and the region (A2) tends to be clear. Therefore, it is easy to recognize the target absorber excreted by the pet, and the pet can excrete in a more accurate and correct position. In addition, it becomes easier for the owner to grasp the urine volume, urine color, place of use, etc. of the pet.

(8) In the animal excrement treatment sheet according to (7) above, the region (A2) is present on a pair of longitudinal sides of the absorber or a pair of sides of the absorber in the lateral direction. You may.

According to this aspect, since the region (A2) exists in the peripheral portion of the absorber, the contour portion of the region (A1) can be more easily grasped. Therefore, it is easy to recognize the target absorber excreted by the pet, and the pet can excrete in a more accurate and correct position. In addition, it becomes easier for the owner to grasp the urine volume, urine color, place of use, etc. of the pet.

(9) The animal excrement treatment sheet according to (8) above may have a folding line straddling the region (A2).

According to this aspect, the light and darkness (boundary) is easily emphasized in the folded line portion of the region (A2), and the contour portion of the region (A1) is more easily grasped. Therefore, it is easy to recognize the target absorber excreted by the pet, and the pet can excrete in a more accurate and correct position. In addition, it becomes easier for the owner to grasp the urine volume, urine color, place of use, etc. of the pet.
(10) The animal excrement treatment sheet according to any one of (1) to (9) above may be used for cataract-affected animals.

According to this aspect, even an animal suffering from cataract and having poor eyesight can easily recognize the target (absorber) to be excreted. Therefore, it is easy for the pet to recognize the target absorber excreted by the pet, and the pet can excrete in the correct position. In addition, it becomes easier for the owner to grasp the urine volume, urine color, place of use, etc. of the pet.

According to the present invention, it is possible to provide an animal excrement treatment sheet that allows a pet to grasp the correct excretion position and the owner to grasp the health condition of the pet from the amount of urine, the color of urine, the place of use and the like.

It is a perspective view of the excrement treatment sheet for animals which concerns on one Embodiment of this invention. It is sectional drawing along the line II-II in FIG. 1 of the excrement treatment sheet for animals which concerns on one Embodiment of this invention. It is a top view of the excrement treatment sheet for animals which concerns on one Embodiment of this invention. It is sectional drawing of the excrement processing sheet for animals which concerns on Example. From the left, a commercially available animal excretion treatment sheet A, an animal excretion treatment sheet of Example 1, a photograph of a commercially available animal excretion treatment sheet B observed under normal conditions, and (b) cataract experience goggles. It is a photograph observed in a yellowish view state, and (c) a photograph observed in a yellowish view state and a blurred view state with cataract experience goggles. From the left, the animal excretion treatment sheet of Example 1, the commercially available animal excretion treatment sheet A, and the commercially available animal excretion treatment sheet B are (a) photographed under normal conditions, and (b) with cataract experience goggles. It is a photograph observed in a yellowish view state, and (c) a photograph observed in a yellowish view state and a blurred view state with cataract experience goggles.

Hereinafter, preferred embodiments of the animal excrement treatment sheet of the present invention will be described in detail with reference to the drawings. In the present specification, unless otherwise specified, "an object placed on a horizontal plane so that the supply surface of excrement faces upward in an unfolded state (for example, an excretion treatment sheet for animals, a surface sheet). , Absorber, etc.) from the upper side in the vertical direction in the thickness direction of the object "is simply referred to as" plan view ", and the view in the plan view is referred to as" plan view ".

FIG. 1 is a perspective view of an animal excrement treatment sheet 1 according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1 of the animal excrement treatment sheet 1. be.
As shown in FIG. 1, the animal excrement treatment sheet 1 according to the embodiment of the present invention is a rectangular sheet in a plan view having a longitudinal direction L, a width direction W, and a thickness direction T. In the present invention, the outer shape of the animal excrement treatment sheet is not limited to such a rectangular shape, and may be arbitrary such as a square, polygon, circular, or elliptical shape depending on various uses and design. The shape can be adopted. Further, the size of the animal excrement treatment sheet 1 can be appropriately set according to the size and type of the animal to which the excrement treatment sheet is applied. The length in the direction L is about 400 mm to 1200 mm, and the length in the width direction W is about 250 mm to 800 mm.

As shown in FIG. 1, the animal excrement treatment sheet 1 is placed in a predetermined position in a breeding space for animals such as pets (for example, indoors) in an unfolded state to excrete urine or the like from the animals. It is used to absorb and retain excrement and keep the breeding space clean. The animal excrement treatment sheet 1 may be placed directly on the floor or the ground of the breeding space, or may be placed via a predetermined holder, tray, laying material, or the like.

Here, the "animal" to which the animal excrement treatment sheet of the present invention is applied is not particularly limited as long as it is an animal that can be bred as a pet or the like, and is not limited to mammals such as dogs, cats and hamsters, for example, birds. It can target various animals such as reptiles, reptiles, and amphibians.

Further, in the present invention, the "excrement" absorbed and retained by the animal excrement treatment sheet is not particularly limited as long as it can be absorbed and retained by the absorber described later, and is, for example, liquid or low viscosity. Examples include feces, urine, saliva such as drool, and various body fluids such as blood.

As shown in FIGS. 1 and 2, the animal excrement treatment sheet 1 according to the present embodiment has a supply surface (hereinafter referred to as “first surface”) of excrement excreted from animals in the thickness direction T. The liquid-permeable surface sheet 2 forming (there is) and the surface opposite to the excrement supply surface (hereinafter, may be referred to as "second surface") and the animal excrement treatment sheet. A liquid-impermeable back sheet 4 forming a mounting surface (that is, a floor surface on which an animal excrement treatment sheet is placed or a surface facing the ground) and an arrangement between these sheets. A liquid-absorbing absorber 3 is provided, and the front surface sheet 2 and the back surface sheet 4 are bonded to each other at their respective peripheral edges by any bonding means such as a hot melt type adhesive.

It is a top view of the excrement treatment sheet for animals which concerns on one Embodiment of this invention. As shown in FIG. 3, the animal excrement treatment sheet 1 according to the present embodiment has a whiteness of 85.5 or more in the region (A) where the absorber 3 is present in a plan view. The whiteness of the region (A) can be measured by a whiteness meter according to JIS Z 8715. For example, the whiteness of the central portion of the absorber 3 may be measured for 3 to 10 samples in a plan view, and the average value thereof may be used as the whiteness of the region (A).

The animal excrement treatment sheet 1 according to the present embodiment has a high whiteness of 85.5 or more in the region (A). Therefore, since the pet can easily grasp the area (A), it can be excreted at the correct position. In addition, the owner can grasp the amount of urine, the color of urine, and the place of use of the pet. Therefore, it is easy to grasp the health condition of the pet.

In the animal excrement treatment sheet 1 according to the present embodiment, the difference in whiteness between the region (A) and the region (B) in which the absorber does not exist is preferably 10 or more in a plan view. , More preferably 12 or more, still more preferably 14 or more. Further, it is preferable that the whiteness of the portion where the region (B) is present is 75 or less.
When the difference in whiteness between the region (A) and the region (B) is within the above-mentioned preferable range, the color contrast between the region (A) and the region (B) tends to be clear.

In the animal excrement treatment sheet 1 according to the present embodiment, the region (A) has a whiteness of 85.5 or more (A1) and a region (A2) having a higher whiteness than the region (A1). ) And is preferable.
FIG. 3 shows an example in which the region (A2) exists on a pair of sides of the absorber 3 in the lateral direction, but the present embodiment is not limited to this. The region (A2) may be present on a pair of sides in the longitudinal direction of the absorber 3, or may be present at a position indicating the boundary of the region (A1).
When the region (A2) is present on the peripheral edge of the absorber, the contour portion of the region (A1) can be more easily grasped. Therefore, it is easy to recognize the target absorber excreted by the pet, and the pet can excrete in a more accurate and correct position. In addition, it becomes easier for the owner to grasp the urine volume, urine color, place of use, etc. of the pet.

The region (A2) may have a region (A21) and a region (A22) having a higher whiteness than the region (A21) (see FIG. 4). In such a case, the height of the whiteness is region (A22)> region (A21)> region (A1).
When the region (A2) is present at the peripheral edge of the absorber, it is preferable that the region (A21) is arranged at the endmost portion and the region (A22) is arranged inside the region (A1). By arranging each region as described above, it is possible to reduce the possibility that the pet accidentally causes urine leakage at the end of the region (A2).

As shown in FIG. 3, the animal excrement treatment sheet 1 according to the present embodiment may have a folding line straddling the region (A2). In this case, the light and darkness (boundary) is easily emphasized in the folded line portion of the region (A2), and the contour portion of the region (A1) is more easily grasped. Therefore, it is easy to recognize the target absorber excreted by the pet, and the pet can excrete in a more accurate and correct position. In addition, it becomes easier for the owner to grasp the urine volume, urine color, place of use, etc. of the pet.

In the animal excrement treatment sheet 1 according to the present embodiment, the region (B) has a whiteness of 65 or less (B1) and a region (B2) having a higher whiteness than the region (B1). (See FIG. 4).
When the region (B) has the region (B1) and the region (B2), the region (A) tends to be more conspicuous. Therefore, it is easy to recognize the target absorber excreted by the pet, and the pet can excrete in a more accurate and correct position. In addition, it becomes easier for the owner to grasp the urine volume, urine color, place of use, etc. of the pet.

The thickness of the animal excrement treatment sheet 1 according to the present embodiment is preferably 0.9 mm to 2.0 mm, more preferably 0.95 mm to 1.9 mm.
When the thickness of the animal excrement treatment sheet 1 is equal to or greater than the upper limit of the above-mentioned preferable range, the whiteness of the region (A) tends to be increased. On the other hand, when the thickness of the animal excrement treatment sheet 1 is not more than the lower limit of the above-mentioned preferable range, the handleability tends to be good.

The glossiness of the animal excrement treatment sheet 1 according to the present embodiment is preferably 3.5 or less, and more preferably 3.2 or less.
When the glossiness of the animal excrement treatment sheet 1 is within the above-mentioned preferable range, it is easy to visually recognize the target absorber excreted by the pet.

Hereinafter, various members constituting the animal excrement treatment sheet 1 according to the present embodiment will be described in more detail.

As shown in FIGS. 1 and 2, the surface sheet 2 is arranged on the side where the animal excrement is supplied in the thickness direction T of the animal excrement treatment sheet 1, and the excrement excreted from the animal is excreted. It is composed of a sheet-like member having liquid permeability capable of transferring an object from the supply surface of the excrement to the opposite surface. The liquid-permeable sheet-like member constituting such a surface sheet 2 is not particularly limited as long as the sheet-like member is made of white fibers and satisfies the above-mentioned specific requirements. For example, any non-woven fabric such as air-through non-woven fabric, spun-bonded non-woven fabric, and point-bonded non-woven fabric can be preferably used. The nonwoven fabric may be hydrophilized with a surfactant.
Among them, the air-through non-woven fabric is entangled with short fibers and is difficult to permeate and easily diffusely reflected. Since it is easy to mix titanium oxide, it is preferable from the viewpoint of increasing the whiteness of the animal excrement treatment sheet 1.

The surface sheet 2 preferably includes a member having a whiteness of 60 or more, more preferably includes a member having a whiteness of 61 or more, and further preferably includes a member having a whiteness of 62 or more.
By including the above member in the surface sheet 2, it is easy to visually recognize the target absorber excreted by the pet. In addition, the whiteness of the region (A) is easily noticeable.

The white fibers constituting the surface sheet 2 are not particularly limited as long as the fibers are white, and for example, a thermoplastic resin fiber to which a white pigment or a white dye is added, or a surface structure capable of diffusely reflecting light. Alternatively, a thermoplastic resin fiber having a crystal structure or the like can be preferably used.

Among such white fibers, the white fibers constituting the surface sheet are preferably thermoplastic resin fibers to which a white pigment is added, from the viewpoint that it is easy to form a surface sheet satisfying the above requirements.
Here, the white pigment added to the thermoplastic resin fiber is not particularly limited, and is, for example, titanium oxide (titanium white), zinc oxide (zinc oxide), a mixture of barium sulfate and zinc sulfide, and basic lead carbonate (lead). White lead) and the like can be mentioned, but titanium oxide is preferably used as the white pigment because of its high refractive index and low toxicity to living organisms.
When titanium oxide is used as the white pigment, the content of the titanium oxide in the thermoplastic resin fiber is not particularly limited, but is preferably 0.1 to 10% by mass, preferably 0.3 to 9% by mass. More preferably, it is more preferably 5 to 8% by mass.
When the white fibers constituting the surface sheet contain titanium oxide having a particularly high refractive index among the white pigments within the above-mentioned preferable range, a surface sheet satisfying the above-mentioned requirements can be easily and surely obtained. Therefore, it is easy to visually recognize the target absorber excreted by the pet, and the whiteness of the region (A) is easily noticeable.

The type of the thermoplastic resin fiber is not particularly limited, and any fiber made of a thermoplastic resin is not particularly limited. Examples of the thermoplastic resin include polyethylene (PE), polypropylene (PP), and ethylene-. Examples thereof include olefin resins such as vinyl acetate copolymer (EVA), polyester resins such as polyethylene terephthalate (PET) and polylactic acid (PLA), and known resins such as polyamide resins such as 6-nylon. The resin may be used alone or in combination of two or more kinds of resins.
The structure of the fiber made of such a thermoplastic resin is not particularly limited, and is, for example, a composite fiber such as a core-sheath type fiber, a side-by-side type fiber, and an island / sea type fiber; a hollow type fiber; a flat fiber. Deformed cross-sectional fibers such as Y-shaped and C-shaped; three-dimensional crimped fibers with latent or actual crimped; split fibers that are divided by physical load such as water flow, heat, embossing, etc., and these structures can be described. The fibers may be used alone or in combination of two or more kinds of fibers.

Among such thermoplastic resin fibers, it is preferable to use a core-sheath type thermoplastic resin fiber such as polyester (core) / polyethylene (sheath), and in particular, the above-mentioned titanium oxide is contained only in the core. It is preferable to use the core-sheath type thermoplastic resin fiber.
If the above-mentioned titanium oxide is contained only in the core portion of the core-sheath type thermoplastic resin fiber, the reflected light is reflected when the light incident on the fiber is reflected by the titanium oxide contained in the core portion. In the sheath portion that covers the outer surface of the core portion, it is refracted and emitted from the fiber, and as a result, more light can be diffusely reflected. Obtainable.
Further, if the surface sheet is composed of such a specific core-sheath-type thermoplastic resin fiber (that is, a core-sheath-type thermoplastic resin fiber containing titanium oxide only in the core portion), the surface sheet Since the bonding between fibers due to heat fusion of the sheath portion is less likely to be hindered by titanium oxide, the fibers can be bonded to each other more reliably, and the surface sheet has higher strength. Can be. As a result, in the surface sheet, the core portion of the core-sheath-type thermoplastic resin fiber that constitutes the surface sheet is less likely to be affected by the scratching motion of animals, etc. It can be exerted more continuously.

The fineness of the above-mentioned thermoplastic resin fiber is not particularly limited, and examples thereof include a fineness in the range of 1.1 to 8.8 dtex, but from the viewpoint of strength, flexibility, liquid permeability, etc. of the nonwoven fabric. , 1.5 to 4.6 dtex, preferably in the range.
Further, the above-mentioned thermoplastic resin fiber is subjected to, for example, a treatment using a surfactant, a hydrophilic agent, or the like (for example, kneading the surfactant inside the fiber, applying the surfactant to the fiber surface, etc.). It may be hydrophilized.

Further, in the animal excrement treatment sheet 1 according to the present embodiment, the surface sheet 2 is preferably composed of only white fibers from the viewpoint of making it easier for the pet to grasp the region (A). It may contain other non-white fibers or any additive as long as it does not impair the effects of the invention.
Examples of such other fibers include fibers made of the same thermoplastic resin as the above-mentioned thermoplastic resin, and the content thereof is preferably 75% by mass or less of the total fibers constituting the surface sheet.
Moreover, as an arbitrary additive, for example, a fragrance, a deodorant, an antibacterial agent, a bactericidal agent and the like can be mentioned. Two or more kinds of these additives may be used in combination.

In the present embodiment, the thickness of the surface sheet 2 is not particularly limited as long as it satisfies the above-mentioned specific requirements, but is preferably 0.5 mm or more.
The thickness of the surface sheet can be measured as follows by using, for example, a COMPRESION TESTER (manufactured by Kato Tech Co., Ltd., model: KES-FB3 AUTO-A) as a measuring device. In measuring the thickness of the surface sheet, the measurement sample sampled from the surface sheet is placed in the above-mentioned measuring device, and the thickness is measured when the pressure on the measurement sample by the measurement terminal is 0.5 g / cm ² . do. For the thickness of the surface sheet, the average value of the measured values at N = 10 is adopted.

In the present embodiment, the basis weight of the surface sheet 2 is not particularly limited, but is preferably 20 g / m ² or more, and particularly preferably 22 g / m ² to 25 g / m ² . When the basis weight of the surface sheet is within the above-mentioned preferable range, it is easy to increase the whiteness in the region (A).

Next, the absorber 3 of the animal excrement treatment sheet 1 according to the present embodiment will be described in detail.

As shown in FIG. 2, the absorber 3 is an absorbent member that is arranged on the side opposite to the supply surface of the excrement of the surface sheet 2 and absorbs and holds the excrement that has passed through the surface sheet 2. be. The surface sheet 2 and the absorber 3 are joined by an arbitrary adhesive such as a hot melt type adhesive, and the adhesive has a basis weight (for example, 0.1 to) that does not hinder the permeation of excrement. 10 g / m2) and a coating form (for example, spiral shape, dot shape, stripe shape, etc.) are arranged between the surface sheet 2 and the absorber 3.

In the present embodiment, as shown in FIGS. 1 and 3, the absorber 3 has a substantially rectangular outer shape in a plan view, and is located in the central region of the animal excrement treatment sheet 1. Although arranged, in the present invention, the absorber is not limited to such an embodiment, and the absorber may have an arbitrary planar shape other than a rectangular shape, and may be the center of the animal excrement treatment sheet. It may be arranged unevenly in any direction from.

In the present embodiment, as shown in FIG. 2, the absorber 3 is a hydrophilic upper sheet 31 located on the front sheet side and an absorbent material located on the back sheet side for absorbing and holding excrement. It is composed of an absorption core 32 formed by the above, and a core wrap sheet 33 made of at least one liquid permeable sheet that covers the upper sheet 31 and the absorption core 32 from the back surface sheet side.

Further, as shown in FIG. 2, the absorption core 32 is located on the front surface sheet side and is located on the back surface sheet side with the first absorption core 321 composed of the absorbent polymer 321a as the absorbent material. It is composed of an absorbent polymer 322a as the absorbent material and a second absorbent core 322 composed of the water-absorbent fiber 322b.

The upper sheet 31 is made of white tissue paper (for example, tissue paper having a basis weight of 13.5 g / m ² formed from softwood bleached kraft pulp as a main raw material), and is an absorption core in the absorber 3. It is arranged so as to cover the surface of the 32 on the surface sheet side to prevent the absorption core 32 from losing its shape.

In this embodiment, the upper sheet 31 forms an intermediate layer having a higher density than the absorption core 32. As a result, the absorber 3 becomes more conspicuous, the target absorber to be excreted by the pet can be easily recognized, and the pet can excrete in a more accurate and correct position. In addition, it becomes easier for the owner to grasp the urine volume, urine color, place of use, etc. of the pet.

In this embodiment, the upper sheet 31 and the absorption core 32 are adhered to each other by a water spray. This water spray is applied to the upper surface (that is, the surface sheet side of the animal excrement treatment sheet) of the absorption core 32 (specifically, the first absorption core 321 made of the absorbent polymer 321a) when the absorber 3 is manufactured. Water is sprayed on the surface of the surface), and the upper sheet 31 is attached onto the spraying means. Since the sprayed water then evaporates and the sprayed portion of the water becomes a dry state, the first absorption composed of the above-mentioned upper sheet 31 and the absorption core 32 (specifically, the absorbent polymer 321a). The core 321) is in a directly joined state. When the upper sheet 31 and the absorption core 32 are adhered by such a water spray, the adhesive does not intervene between the upper sheet 31 and the absorption core 32, and excretion of urine or the like transferred from the surface sheet side. Since the substance can be rapidly absorbed by the absorption core 32, the deodorizing effect can be exerted immediately after the animal is excreted, and a comfortable breeding environment can be provided to the animal owner or the like.

The sheet member constituting the upper sheet is not particularly limited, and in addition to the above-mentioned tissue paper, any non-woven fabric such as an air-through non-woven fabric or a spunbonded non-woven fabric can be used.

Hereinafter, the absorption core 32 in the animal excrement treatment sheet 1 according to the above-described embodiment will be described in more detail.

In the present embodiment, as described above, the absorption core 32 is composed of a first absorption core 321 located on the front sheet side and a second absorption core 322 located on the back sheet side.
Further, as shown in FIG. 2, the first absorption core 321 is composed of a granular absorbent polymer 321a that exists in a state of being dispersed in a plane between the above-mentioned upper sheet 31 and the second absorption core 322. The second absorbent core 322 is composed of a mixture of the granular absorbent polymer 322a and the water-absorbent fiber 322b arranged between the first absorbent core 321 and the core wrap sheet 33 described above.

The absorbent polymer 321a constituting the first absorbent core 321 and the absorbent polymer 322a constituting the second absorbent core 322 may be the same absorbent polymer or different absorbent polymers. The absorbent polymer used in the present embodiment is not particularly limited as long as it can absorb and retain a liquid, and for example, any superabsorbent polymer such as polyacrylic acid-based, starch-based, or cellulose-based polymer can be used. Can be adopted. The basis weight of the absorbent polymer is not particularly limited, but the basis weight of the absorbent polymer 321a constituting the first absorption core 321 is set from the viewpoint of enhancing the absorbency of the liquid and the whiteness of the region (A). It is preferably in the range of 5 g / m ² to 170 g / m ² , more preferably 20 g / m ² to 135 g / m ² , and even more preferably 30 g / m ² to 105 g / m ² . The basis weight of the absorbent polymer 322a contained in the second absorption core 322 is preferably in the range of 0.5 g / m ² to 65 g / m ² , and more preferably 5 g / m ² to 50 g / m ² . It is preferable, 5 g / m ² to 40 g / m ² is more preferable.

The water-absorbent fiber contained in the second absorption core 322 is not particularly limited as long as it can absorb and retain the liquid, and for example, a cellulosic water-absorbent fiber such as pulp (for example, fluff pulp) is used. be able to.
The basis weight of the water-absorbent fiber is not particularly limited, but is preferably in the range of 10 g / m ² to 250 g / m ² from the viewpoint of liquid absorbency, and is preferably in the range of 30 g / m ² to 200 g / m ² . Is more preferable, and 45 g / m ² to 150 g / m ² is even more preferable.

The basis weight of the entire absorption core 32 is preferably 15 g / m ² to 480 g / m ² , more preferably 55 g / m ² to 385 g / m ² , and even more preferably 80 g / m ² to 290 g / m ² .
When the basis weight of the entire absorption core 32 is within the above-mentioned preferable range, it is easy to increase the whiteness of the region (A).

In the animal excrement treatment sheet 1 according to the present embodiment, since the absorption core 32 contained in the absorber 3 is composed of the first absorption core 321 and the second absorption core 322 as described above, the surface sheet 2 is provided. The permeated excrement passes between the absorbent polymers 321a of the first absorbing core 321 and becomes the second absorbing core 322 by the affinity of the water-absorbing fiber 322b such as pulp contained in the second absorbing core 322. It is easy to be drawn in. As a result, the animal excrement treatment sheet 1 according to the present embodiment can rapidly absorb excrement such as urine into the absorber 3, thus providing a comfortable breeding environment for animal owners and the like. be able to. Further, in the animal excrement treatment sheet 1 according to the present embodiment, since excrement such as urine is less likely to remain between the surface sheet 2 and the absorber 3, the animal excrement treatment sheet 1 is used. The animal's legs and body hair are less likely to get wet.

Further, when the absorption core 32 included in the absorber 3 is composed of the first absorption core 321 and the second absorption core 322 as described above, an animal such as a dog can use the animal excrement treatment sheet according to the present embodiment. Even if the excrement held between the water-absorbent fibers 322b contained in the second absorption core 322 exudes due to the pressure applied from the animal's foot when riding on the 1, the excrement exudes. Since the excrement can be absorbed by the absorbent polymer 322a contained in the second absorbing core 322 and the absorbent polymer 321a of the first absorbing core 321 located on the surface sheet 2 side, the surface sheet 2 is supplied. It becomes difficult for excrement to return toward the surface. This makes it possible to prevent the animal's feet from becoming dirty and the excrement returned from the absorber 3 from causing a foul odor.

Further, in the animal excrement treatment sheet 1 according to the present embodiment, the absorber 3 contains the absorbent polymer 321a of the first absorption core 321 and the absorbent polymer 322a and the water-absorbent fiber 322b contained in the second absorption core 322. As the absorbent material contains, the amount of water retained by the entire absorber is large, and the excrement excreted from the animal can be reliably absorbed and retained for a long period of time.

In the above-described embodiment, the absorption core 32 included in the absorber 3 is composed of the first absorption core 321 and the second absorption core 322 as described above, but in the present invention, such a configuration is adopted. The absorption core may be composed of a single absorption core as in the conventional case, or may be composed of a plurality of absorption cores of three or more.
Further, the absorbent material constituting the absorbent core is not limited to the above-mentioned absorbent polymer and water-absorbent fiber, and any absorbent material conventionally used in the art can be adopted.

Further, in the present embodiment, the core wrap sheet 33 is formed of the same tissue paper as the above-mentioned upper sheet 31 (for example, coniferous bleached kraft pulp as a main raw material, and has a basis weight of 13.0 g / m ² to 13. It is composed of 5 g / m ² tissue paper or the like), and is arranged so as to cover the upper sheet 31 and the absorption core 32 from the back surface sheet side in the absorber 3, and the shape of the absorption core 32 is lost or the upper sheet 31 is formed. This is to prevent misalignment of the paper.

In the present embodiment, the core wrap sheet 33 is arranged so as to cover the upper sheet 31 and the absorption core 32 from the back surface sheet side, thereby forming an intermediate layer having a higher density than the absorption core 32. With the above configuration, in the region (A), the region (A2) is easily recognized as a boundary of the region (A1), and the color contrast between the region (A1) and the region (A2) is likely to be clearer. As a result, the absorber 3 becomes more conspicuous, the target absorber to be excreted by the pet can be easily recognized, and the pet can excrete in a more accurate and correct position. In addition, it becomes easier for the owner to grasp the urine volume, urine color, place of use, etc. of the pet.

In the present embodiment, the core wrap sheet is not particularly limited as long as it has liquid permeability and can prevent the absorption core from losing its shape, and in addition to the above-mentioned tissue paper, for example, an air-through non-woven fabric and a span. Any non-woven fabric such as a bonded non-woven fabric can be used.

Next, the back surface sheet 4 used for the animal excrement treatment sheet 1 according to the present embodiment will be described in more detail.

In the present embodiment, as shown in FIG. 2, the back surface sheet 4 faces the floor surface or the ground on which the animal excrement treatment sheet 1 is placed in the thickness direction T of the animal excrement treatment sheet 1. It is composed of a liquid-impermeable sheet member that is arranged so as to prevent leakage of excrement excreted from animals.
The liquid-impermeable sheet member constituting such a back surface sheet 4 is not particularly limited, and for example, a non-breathable resin film such as polyethylene or polypropylene, a laminate in which a non-woven fabric is bonded to the resin film, or water repellency. Alternatively, a hydrophobic non-woven fabric or the like can be preferably used.

The animal excrement treatment sheet of the present invention as in the above-described embodiment can be produced, for example, as follows.
(1) Production of surface sheet Carding of fibers (for example, PET (core) / PE (sheath) core-sheath composite fibers) containing a white pigment (for example, titanium oxide) in a predetermined content. It is supplied to the device, and the core-sheath type composite fiber is opened in the carding device to form a web. While further transporting the formed web to the downstream side in the transport direction, it is transported to, for example, an air-through type heating device, and the fibers in the web are entangled with each other in the heating device to form a hydrophilic surface sheet. Obtain a non-woven fabric.
(2) Production of Absorber A substantially flat plate-shaped second absorbent core containing the above-mentioned absorbent material is prepared, and a predetermined amount of the absorbent polymer is uniformly arranged on one surface of the second absorbent core. 1 Absorption core is formed, and an absorption core composed of a laminate of the first absorption core and the second absorption core is obtained. Further, after the above-mentioned upper sheet is attached to the upper surface of the absorption core, the upper sheet and the absorption core are covered with an arbitrary core wrap sheet to obtain an absorber.
(3) Manufacture of excretion treatment sheet for animals After joining the second surface of the above-mentioned surface sheet to one surface of the upper sheet side of the absorber using, for example, a hot melt type adhesive, the absorber On the other surface of the second absorption core side, for example, a polyethylene non-breathable sheet is arranged as a back surface sheet, and the front surface sheet and the back surface sheet are sandwiched between the front surface sheet and the back surface sheet. By joining the peripheral portions of the back surface sheets with a hot melt type adhesive, the animal excretion treatment sheet of the present invention as in the above-described embodiment can be obtained.

The animal excrement treatment sheet of the present invention is not limited to the above-mentioned embodiments and the examples described later, and can be appropriately combined or modified within a range that does not deviate from the object and purpose of the present invention. be. For example, in yet another embodiment of the invention, the animal waste treatment sheet is placed between the front sheet and the absorber, between the absorber and the back sheet, or both in the longitudinal direction L and / or the width direction. W may be provided with an intermediate sheet having liquid diffusivity. When the animal excrement treatment sheet is provided with such an intermediate sheet, the excrement can be absorbed by the absorber while being diffused in the longitudinal direction L and / or the width direction W by the intermediate sheet. In addition to the effect that the region (A) can be easily grasped, it is possible to exhibit high absorption performance such as excellent absorption efficiency and difficulty in liquid return.
In this specification, the ordinal numbers such as "first" and "second" are for distinguishing the items to which the ordinal numbers are attached, and mean the order, priority, importance, etc. of each item. It's not something to do.

Hereinafter, the present invention will be described in more detail by way of examples, but the present invention is not limited to these examples.

(Examples 1 to 4, Comparative Examples 1 to 2)
The front surface sheet and the absorber shown in Table 1 and the back surface sheet were joined by a known method to obtain an animal excrement treatment sheet.

The whiteness and glossiness of the surface sheets used in Examples 1 to 4 and Comparative Examples 1 and 2 and the obtained excrement-treated sheets for animals were evaluated by the following methods. In addition, the thickness of each of the obtained excrement treatment sheets for animals was evaluated by the following method. The results are shown in Table 1.

(Whiteness)
The whiteness was measured according to JIS Z 8715. Specifically, ZERO-BOX of Color meter ZE 6000 (Nippon Denshoku Industries Co., Ltd.) was placed on the sample port and the "0-CAL" key was pressed to perform zero calibration. Place the standard white plate on the sample port and press the "S-CAL" key to confirm that the measurement method for which standard calibration has been performed is "reflection measurement", place the sample on the sample port, and press the "sample holder" from above. After pressing it, the "ENTER" key was pressed to start the measurement.
Five samples were prepared by cutting out the central part of the absorber of one sheet with a size of 30 mm × 30 mm (Size can be appropriately modified according to the measuring instrument and sample), the samples were measured, and the average value was measured for the presence of the absorber. The whiteness in the area (A) to be used was used. Further, the whiteness of the peripheral portion of each sheet was measured for five samples using a whiteness meter, and the average value was taken as the whiteness in the region (B) where the absorber did not exist.

(Glossiness)
The glossiness was measured using Gloss Meter VG7000 (manufactured by Nippon Denshoku Kogyo Co., Ltd.). After confirming that the measurement angle was 60 ° C., the ZERO-BOX was set on the sample table, and the "0-CAL" key was pressed to perform zero calibration. The standard plate was set on the sample table, and the "S-CAL" key was pressed to perform standard calibration. The sample was set on the sample table, and the measurement was started by pressing the "START" key while holding the sample with the "sample holder".

(Thickness)
The thickness was measured using a PEACOCK thickness measuring instrument JB 0.05 mm (manufactured by Ozaki Seisakusho Co., Ltd.). Using the above equipment, the points obtained by dividing the sheet on the absorber in the longitudinal direction into five parts were measured and used as an average value.

In Table 1, the materials of the surface sheet are as follows.
AT22gsm: Air-through non-woven fabric with a basis weight of 22g / m ² .
PB22gsm: 22g / m ² basis weight point bond non-woven fabric.

(Example 5)
A front sheet (air-through non-woven fabric having a basis weight of 22 g / m ² (titanium oxide content: 6%)), an absorbent body composed of an absorbent core and a core wrap sheet, and a back sheet are bonded by a known method for animals. An excrement treatment sheet was obtained.

(Example 6)
A front sheet (air-through non-woven fabric having a basis weight of 22 g / m ² (titanium oxide content: 6%)), an absorber composed of an upper sheet, an absorbent core and a core wrap sheet, and a back sheet are joined by a known method. , Animal excrement treatment sheet was obtained.

(Example 7)
A front sheet (air-through non-woven fabric having a basis weight of 22 g / m ² (titanium oxide content: 6%)), an absorber composed of an upper sheet and an absorption core, and a back sheet are joined by a known method and excreted for animals. Obtained a material processing sheet.

With respect to the animal excrement treatment sheet of Example 6, the whiteness of each of the region (B1), the region (B2), the region (A1) region (A21) and the region (A22) was evaluated by the following method. The results are shown in Table 2.

(Whiteness)
FIG. 4 is a schematic cross-sectional view of the animal excrement treatment sheet according to Example 6. In accordance with JIS Z 8715, the whiteness of the region (B1), region (B2), region (A1), region (A21) and region (A22) shown in FIG. 4 was measured by the same method as described above.

(Evaluation by cataract goggles)
Example 1 animal excrement treatment sheet (whiteness: 90.2), commercially available animal excrement treatment sheet A (whiteness: 84.7), and commercially available animal excrement treatment sheet B (whiteness:: 73.68) was observed using catastrophe experience goggles.
When suffering from cataract, light with a short bluish wavelength does not pass through the turbid crystalline lens, and the light that reaches the retina is only red or yellowish, resulting in an overall yellowish color. This state was defined as "visual field state A".
Also, when suffering from cataracts, the visual field becomes blurred as if it were hazy because the part through which light passes is reduced. This state was defined as "visual field state B".

FIG. 5 shows a photograph of a commercially available animal excrement treatment sheet A, a commercially available animal excrement treatment sheet of Example 1, and a commercially available animal excrement treatment sheet B observed in a normal state from the left, (b). It is a photograph observed in the view state A, and (c) a photograph observed in the view state A and the view state B.
Further, FIG. 6 is a photograph of (a) a photograph of the animal excrement treatment sheet of Example 1, a commercially available animal excrement treatment sheet A, and a commercially available animal excrement treatment sheet B observed in a normal state from the left. b) The photograph observed in the visual state A, and (c) the photograph observed in the visual state A and the visual state B.
As shown in FIGS. 5 and 6, it was confirmed that the animal excrement treatment sheet of Example 1 has high whiteness and can be visually recognized even when observed in the visual field state A or the visual field states A and B. rice field.

1 Animal excrement treatment sheet 2 Front sheet 3 Absorber 31 Top sheet 32 Absorption core 321 1st absorption core 322 2nd absorption core 33 Core wrap sheet 4 Back sheet 5 Folded line

Claims (10)

An animal excrement treatment sheet comprising a liquid-permeable front sheet, a liquid-impermeable back sheet, and an absorber arranged between these sheets.
In a plan view, the whiteness in the region (A) where the absorber is present is 85.5 or more.
Animal excrement treatment sheet. The animal excrement treatment sheet according to claim 1, wherein the difference in whiteness between the region (A) and the region (B) in which the absorber does not exist is 10 or more in a plan view. The animal excrement treatment sheet according to claim 2, wherein the whiteness of the portion where the region (B) is present is 75 or less. The absorber
Absorption core and
An intermediate layer, which is placed on at least one surface of the absorption core and has a higher density than the absorption core,
The animal excrement treatment sheet according to any one of claims 1 to 3, further comprising. The animal excrement treatment sheet according to claim 4, wherein the absorption core has a basis weight of 15 g / m ² to 480 g / m ² . The animal excrement treatment sheet according to any one of claims 1 to 5, wherein the surface sheet includes a member having a whiteness of 60 or more. One of claims 1 to 6, wherein the region (A) has a region (A1) having a whiteness of 85.5 or more and a region (A2) having a whiteness higher than that of the region (A1). Animal excrement treatment sheet according to the section. The animal excrement treatment sheet according to claim 7, wherein the region (A2) is present on a pair of sides in the longitudinal direction of the absorber or a pair of sides in the lateral direction of the absorber. The animal excrement treatment sheet according to claim 8, which has a fold line straddling the region (A2). The animal excrement treatment sheet according to any one of claims 1 to 9, which is used for cataract-affected animals.

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