JP2005021071A - Animal excreta treatment material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an animal excreta treatment material for absorbing excreta and preventing emission of an offensive smell. <P>SOLUTION: This animal excreta treatment material for absorbing animal excreta has a water-absorbing matrix composed of a water-absorbable granule aggregate and deodorizing/water-absorbing particles being minute granules having deodorization properties and water absorption. The deodorizing/water-absorbing particles are dispersed and arranged in the water-absorbing matrix. In a part or the whole of the deodorizing/water-absorbing particles, at least a part of the surfaces of the deodorizing/water-absorbing particles is exposed to the surface of the animal excreta treatment material. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an animal excrement disposal material used for animal toilets such as cats and dogs.
[0002]
[Prior art]
As a toilet for animals such as cats and dogs kept indoors, an excrement treatment material called “toilet sand” made of granular material is put in a plastic container and is generally used. Excrements such as urine excreted by animals are absorbed by the excrement disposal material. The owner removes the excrement disposal material soiled with the excrement from the container together with the excrement, and replenishes the new excrement disposal material according to the removed amount.
[0003]
As the excrement treating material, for example, a coarse porous silica gel having a single porous structure is used as a core, and the coarse granular silica gel serving as the core is starch, PVA (polyvinyl alcohol), CMC (carboxymethyl cellulose) in addition to a water absorbent resin. , Bentonite, or a mixture of any one of these and a water-absorbing material having a coagulability to form a composite structure (for example, see Patent Document 1).
[0004]
[Patent Document 1]
Patent No. 3011899 [0005]
[Problems to be solved by the invention]
However, since the excrement disposal material described in Patent Document 1 has a structure in which coarse silica gel is used as a central material and the surface is covered with an absorbent material, the deodorizing function of silica gel is not exhibited and the generation of malodor The problem has arisen. Therefore, it has been a problem imposed on those skilled in the art to provide an excrement disposal material that can absorb excrement and prevent the generation of malodor.
[0006]
This invention is made | formed in view of the above subjects, The objective is to provide the excrement processing material which can prevent generation | occurrence | production of a malodor while absorbing the excrement of an animal.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present inventors have conducted extensive research on the compatibility between water absorption and deodorization and the effect thereof. As a result, by adopting a method in which silica gel is dispersed and arranged on the surface of the granular material composed of the absorbent matrix, it has been possible to effectively provide both the water absorption and deodorizing functions to the excrement disposal material. It was.
[0008]
(1) An animal excrement treatment material that absorbs animal excrement, comprising a water-absorbing matrix composed of an aggregate of particulates having water absorption, and fine granular materials having both deodorizing and water-absorbing properties. The deodorizing / water-absorbing particles, the deodorizing / water-absorbing particles are dispersed in the water-absorbing matrix, and the deodorizing / water-absorbing particles are all or part of the deodorizing / water-absorbing particles. An animal excrement disposal material, wherein at least a part of the surface of the water-absorbent particles is exposed on the surface of the animal excrement disposal material.
[0009]
According to the animal excrement disposal material according to (1), a deodorizing / absorbing water which is a water-absorbing matrix composed of an aggregate of granular materials having water-absorbing properties and fine granular materials having both deodorizing properties and water-absorbing properties. Since both particles are contained, absorption is performed synergistically, and excrement such as urine can be efficiently absorbed. Also, unlike conventional excrement disposal agents, in the total number or a partial number of deodorized / water-absorbing particles, at least a part of the surface is not covered with the water-absorbing matrix or the like and exposed to the surface of the excrement disposal agent. is doing. Therefore, the deodorizing function of the deodorizing / water-absorbing particles is exhibited without being hindered, and the generation of malodor can be prevented.
[0010]
(2) The animal excrement disposal material according to (1), wherein the deodorizing / water-absorbing particles are mainly dispersed and arranged in a surface layer portion of the water-absorbing matrix.
[0011]
According to the animal excrement disposal material according to (2), since the deodorized / water-absorbent particles are mainly dispersed and arranged in the surface layer portion of the water-absorbent matrix, in the majority of the deodorized / absorbent particles, Part of the surface is exposed on the surface of the excrement disposal material. Therefore, the majority of the deodorizing / water-absorbing particles can be exhibited without hindering the deodorizing function, and the generation of malodor can be effectively prevented. Here, the surface layer portion means that a portion of the deodorized / water absorbent particles is exposed on the surface when the deodorized / water absorbent particles are arranged on the surface layer portion.
[0012]
(3) The animal excrement disposal material is a two-layer structure including a core material and a skin material that covers the core material, and the core material and the skin material are each composed of the water-absorbing matrix. (1) or (2), wherein the skin material has the deodorizing / water-absorbing particles and the aggregating particles which are granular materials that exhibit the aggregating property upon water absorption. Animal excrement disposal materials.
[0013]
According to the animal excrement disposal material according to (3), since the deodorizing / water-absorbing particles are contained in the skin material, in the majority of the deodorizing / absorbing particles, a part of the surface thereof is excrement-treated. It is exposed on the surface of the material. Therefore, the deodorizing / water absorbing particles can be exhibited without hindering the deodorizing function, and the generation of malodor can be prevented more effectively. The difference from (2) is that in (3), the animal excrement disposal material is a two-layer structure having a core material and a skin material covering the core material. The weight ratio of the skin material to the core material is skin material / core material = 70/30 to 30/70, preferably skin material / core material = 55/45 to 45/55. Moreover, in (3), since the coagulant particle is contained and the excrement disposal agent is solidified by excrement such as urine, only the contaminated excrement disposal agent can be easily removed.
[0014]
(4) The animal excrement disposal material according to (3), wherein the water-absorbing matrix contained in the core material is a natural organic substance.
[0015]
According to the animal excrement disposal material according to (4), since a natural organic material having excellent water absorption is used as the water absorption matrix contained in the core material, the excrement can be sufficiently absorbed, and It is designed with safety in mind. As the water-absorbing matrix contained in the core material, for example, pulp is used.
[0016]
(5) The animal excrement disposal material according to any one of (1) to (4), wherein the deodorizing / water-absorbing particles are silica gel.
[0017]
According to the animal excrement disposal material according to (5), by using silica gel as the deodorizing and water-absorbing particles, it is possible to absorb excrement and effectively prevent the generation of malodor. Since silica gel has a porous structure, it is an inorganic substance having both deodorizing properties and water absorption properties, and is preferred because it is most well known. The weight ratio of silica gel in the skin material is 3% to 20%, preferably 5% to 10%. When the amount of silica gel is more than 20%, the silica gel itself has no coagulability, so that solidification of the excrement disposal material is inhibited, and when it is less than 3%, the deodorizing function is lowered.
[0018]
(6) The animal excrement disposal material according to any one of (1) to (5), wherein a particle diameter of the deodorizing / water-absorbing particles is 100 μm to 1500 μm.
[0019]
According to the animal excrement disposal material according to (6), the particle size of the deodorized / water-absorbent particles is 100 μm to 1500 μm. Preferably it is 250 micrometers or more, More preferably, they are 300 micrometers-700 micrometers. When the deodorant / water-absorbent particles are colored by using particles having a large particle size, the deodorant / water-absorbent particles are exposed on the surface of the excrement disposal material. Can be visually recognized. Further, when the deodorizing / water-absorbing particles are provided with a function of changing color by absorbing liquid or a function of changing color according to the state of urine to be absorbed, it is easy to visually distinguish the color change. However, when the particle size of the deodorized / water-absorbing particles is smaller than 100 μm, the surface area of the deodorized / water-absorbing particles is increased, so that the absorption rate of excrement such as urine is increased and moisture is transferred to the coagulating particles. The deodorizing / water-absorbing particles absorb moisture before, and the coagulation force of the excrement treating agent becomes weak. On the other hand, when the particle size of the deodorizing / water absorbing particles is larger than 1500 μm, it is difficult to disperse and dispose the deodorizing / water absorbing particles in the water absorbing matrix.
[0020]
(7) The animal excrement disposal material according to any one of (1) to (6), wherein the deodorizing / water-absorbing particles are colored.
[0021]
According to the animal excrement disposal material according to (7), the deodorization / water absorption particles are contained in the excrement disposal material and are exposed on the surface of the excrement disposal material by coloring the deodorization / water absorption particles. You can visually recognize what you are doing. As a result, it can be visually recognized that the deodorizing / water-absorbing particles can sufficiently exhibit the deodorizing function without being inhibited by the water-absorbing matrix. A blue azo dye or the like can be used for coloring.
[0022]
(8) The animal excrement disposal material according to any one of (1) to (7), wherein the deodorizing / water-absorbing particles are discolored by absorbing a liquid.
[0023]
According to the animal excrement disposal material according to (8), the deodorized / water-absorbing particles are discolored by absorbing liquid, for example, carrying a component that discolors by liquid absorption. Examples of the component that changes color due to liquid absorption include cobalt blue and the like, which is supported on silica gel or the like. In consideration of safety and the like, silica gel or the like to which an organic dye moisture sensitive colorant is added may be used. In the case of silica gel supporting cobalt chloride blue, the color changes from blue to pink due to liquid absorption. Thereby, a contamination location can be specified easily and by extension, the labor of the cleaning operation in the toilet imposed on the owner can be reduced.
[0024]
(9) The animal excrement disposal material according to any one of (1) to (8), wherein the deodorizing / water-absorbing particles are discolored according to a component of the liquid to be absorbed.
[0025]
According to the animal excrement disposal material according to (9), the deodorizing / water-absorbing particles change color according to the component of the liquid to be absorbed, for example, a component that changes color according to the component of the liquid to be absorbed. It is what is carried. The components that change color according to the liquid component to be absorbed include urine pH test agent, urine protein test agent, urine glucose test agent, urine occult blood test agent, urine urobilinogen test agent, urine ketone body test agent These are supported on silica gel or the like. Thereby, the state of the animal's urine can be grasped, and the health state of the animal can be known.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of the second embodiment, descriptions of configurations, effects, and usage modes common to the first embodiment are omitted.
[0027]
<First Embodiment>
[Overall structure of excrement disposal materials]
FIG. 1 is a perspective view of the excrement disposal material 1 according to the first embodiment and the second embodiment, and FIG. 2 is a cross-sectional view of the excrement disposal material 1 according to the first embodiment. The excrement disposal material 1 according to the first embodiment has a columnar shape with an approximate diameter of 2 mm to 4 mm and a height of 4 mm to 10 mm, and the cross section is a core material as shown in FIG. 4 has a two-layer structure in which the skin material 3 is coated. The skin material 3 contains a water-absorbing matrix and coagulating particles as main materials. Pulp and superabsorbent resin are used as the water-absorbing matrix, and pregelatinized starch is used as the coagulating particles. Further, in addition to these main materials, the skin material 3 also contains silica gel as the deodorizing / water-absorbing particles 2, and at least a part of the silica gel is exposed on the surface. On the other hand, the core material 4 contains pregelatinized starch as a molding aid in addition to pulp that is a water-absorbing matrix.
[0028]
[Skin material]
As described above, the skin material contains pulp, superabsorbent resin, and pregelatinized starch as main materials, and the weight ratio thereof is (pulp / superabsorbent resin / pregelatinized starch) = (50 / 20/30). Since the excrement treating agent only needs to absorb and solidify excrement, for example, the main material of the skin material is only a superabsorbent resin having a coagulation property with pulp, and these ratios are set (pulp / coagulation). High absorbency resin) = (50/50). The weight ratio of the main material to silica gel is (main material / silica gel) = (100/7). The weight ratio of the skin material to the core material is (skin material / core material) = (50/50).
[0029]
(Water absorption matrix)
Pulp is used as the water-absorbing matrix contained in the skin material. Specifically, in addition to finely pulverized products such as NBKP (coniferous pulp) and LBKP (hardwood pulp), diaper separateds and the like are used, but not limited thereto. In addition, most of the fiber length of a pulp is 20 micrometers-150 micrometers.
[0030]
Similar to pulp, a superabsorbent resin is also used as a water-absorbing matrix contained in the skin material. Specifically, a finely pulverized product such as a polyacrylic acid polymer, a starch-acrylic acid copolymer, an acrylic acid-vinyl alcohol copolymer, or a polyoxyethylene type is used. Most of the particle diameters of these superabsorbent resins are 20 μm to 100 μm.
[0031]
(Condensable particles)
Pregelatinized starch is used as the coagulating particles. Specifically, the starch obtained from tapioca, potato, corn, etc. after being gelatinized and then finely pulverized is used. In addition, adhesive guar gum and the like are also used. The particle diameter of these pregelatinized starches is mostly 20 μm to 100 μm.
[0032]
(Deodorizing / absorbing particles)
Silica gel is used as deodorizing and water-absorbing particles. In order to prevent the deodorizing property from being inhibited, at least a part of the silica gel is exposed on the surface in the total number or a part of the silica gel. The particle size of the silica gel used is 300 μm to 700 μm. The weight ratio of silica gel in the skin material is 5% to 10%.
[0033]
[(A) Colored deodorized / water-absorbing particles]
The deodorizing / water-absorbing particles may be colored. A blue azo dye is used for coloring, but is not limited thereto. As a coloring method, first, silica gel is pulverized and sieved to 300 μm to 700 μm to obtain a finely pulverized silica gel product. Next, an aqueous solution obtained by dissolving 50 g of an azo dye in 50 g of water is gradually added dropwise to 100 kg of the finely pulverized product with stirring. After dropping, the silica gel finely pulverized product is dried so that the water content is 20% or less, whereby a blue colored silica gel is obtained.
[0034]
[(B) Deodorized / water-absorbing particles that discolor by absorbing liquid]
The deodorizing / water-absorbing particles may be silica gel carrying a component that changes color due to liquid absorption. Cobalt chloride blue is used as the component that changes color due to liquid absorption, but is not limited thereto. Considering safety and the like, silica gel or the like to which an organic dye moisture sensitive colorant (for example, “silica gel blue-humidity indicating silica gel” manufactured by Oe Chemical Co., Ltd.) is added may be used. In the case of silica gel supporting cobalt chloride blue, the color changes from blue to pink due to liquid absorption.
[0035]
[(C) Deodorized / water-absorbing particles that change color according to the component of the liquid to be absorbed]
The deodorizing / water-absorbing particles may be silica gel carrying a component that changes color depending on the component of the liquid to be absorbed. The components that change color depending on the components of the liquid to be absorbed include phenolphthalein, bromthymol blue, bromcresol purple, tetraiodophenolsulfonephthalein, brilliant yellow, phenol red, cresol red, and ethyl, which are urine pH test agents. Tetrabromophenol blue, a protein test for orange, urine, glucose oxidase, veroxidase, 2.7 diaminofluorin dihydrochloride, N- (3-sulfopropyl) -3,3 ', 5,5'-Tetremethylbenzidine sodium, urinary occult blood test hydrogen peroxide cumene, tetramethylbenzine, etc., urine urobilinogen test agent methanoic acid, 3,4 methylenedioxybenzenediazonium tetrafluoride With urinary ketone body test agents such as boride That glycine, sodium nitroprusside bromide, and the like, these ones were carried like silica gel can be used.
[0036]
[Core material]
<Water absorption matrix>
What is used as the water-absorbing matrix contained in the core material may be different from the water-absorbing matrix contained in the skin material. Specifically, debris from waste paper such as papermaking waste, newspaper and cardboard, LBKP (hardwood pulp), NBKP (conifer pulp), rayon, polyolefin fibers such as PE and PP, and others, okara, coffee gar, wood Powder / pulverized product, non-woven fabric pulverized product, peat moss, and a mixture thereof.
[0037]
<Molding aid>
The molding aid may be used to improve the moldability of the water-absorbing matrix of the core material. In particular, when industrial waste such as papermaking waste is reused as a core material, by using a molding aid, it is possible to stably mold even when the fiber thickness or length of industrial waste is different. . As a molding aid, propylene glycol, polyethylene glycol, CMC (carboxymethylcellulose), superabsorbent resin, PVA (polyvinyl alcohol), bentonite, and the like are used in addition to pregelatinized starch. The weight ratio of the water-absorbing matrix to the molding aid is 97/3.
[0038]
[Production method]
The manufacturing method of the excrement disposal material according to the first embodiment is as follows. First, the core material is adjusted to a moisture content of 60% (core material / water = 40/60). Next, raw materials for the skin material (pulp, superabsorbent resin, starch, silica gel) are mixed. The core material with adjusted moisture content is extruded from a 3 mm diameter die with a disk pelleter, and is adjusted to approximately 1.5 to 3.5 mm in diameter and 3 to 9 mm in length. After adjusting the size, the skin material is evenly coated on the entire core material using equipment using vibration. Finally, it is dried so that the moisture content of the whole excrement treating agent is 5% to 12%.
[0039]
[Usage]
FIG. 4 is a diagram showing an animal toilet before use, and FIG. 5 is a diagram showing an animal toilet after use. The excrement disposal material 6 before use according to the first embodiment is used in a state of being put in a toilet container 7. When the animal excretes, the excrement disposal material 6 is solidified by the excrement. The owner removes the excrement disposal material 8 solidified by the excrement and replenishes it with a new excrement disposal material.
[0040]
[Effects of First Embodiment]
According to the animal excrement disposal material according to the first embodiment, a water-absorbing matrix composed of an aggregate of water-absorbing granular materials, and a deodorized / water-absorbing material that is a fine granular material having both deodorizing properties and water absorbing properties. Because of the inclusion of sex particles, it can absorb all excretions such as urine. In addition, unlike conventional excrement disposal materials, in the total number or a part of the deodorized / water-absorbing particles, at least a part of the deodorized / absorbent particles is exposed on the surface without being covered with the water-absorbing matrix. The deodorizing function of the water-absorbing particles is exhibited without being hindered, and the generation of malodor can be prevented.
[0041]
According to the animal excrement disposal material according to the first embodiment, since the deodorized / water-absorbent particles are contained in the skin material, in the majority of the deodorized / absorbent particles, a part of the surface thereof is excreted. It is exposed on the surface of the treatment material. Therefore, the deodorizing / water absorbing particles can be exhibited without hindering the deodorizing function, and the generation of malodor can be prevented more effectively.
[0042]
According to the animal excrement disposal material according to the first embodiment, as a water-absorbing matrix contained in the core material, since a pulp derived from a natural organic material having excellent water absorption is used, the excrement can be sufficiently absorbed, In addition, the safety for animals is taken into consideration. Further, silica gel or the like is used as deodorizing / water-absorbing particles, so that excrement can be absorbed and the generation of malodor can be effectively prevented.
[0043]
Further, according to the animal excrement disposal material according to the first embodiment, the deodorization / water absorption particles are contained in the excrement disposal material by coloring the deodorization / water absorption particles, and the excrement disposal material It can be visually recognized that it is exposed on the surface. As a result, it can be visually recognized that the deodorizing / water-absorbing particles can sufficiently exhibit the deodorizing function without being inhibited by the water-absorbing matrix.
[0044]
Furthermore, according to the animal excrement disposal material according to the first embodiment, the deodorized / water-absorbing particles are discolored by absorbing the liquid, so that the contaminated portion can be easily identified, and thus imposed on the owner. Labor cleaning work can be reduced.
[0045]
Furthermore, according to the animal excrement disposal material according to the first embodiment, the deodorizing / water-absorbing particles are discolored according to the component of the liquid to be absorbed, so the urine state of the animal can be grasped, You can know the health status of animals.
[0046]
Second Embodiment
[Configuration of the whole excrement disposal material]
FIG. 1 is a perspective view of the excrement disposal material 1 according to the first embodiment and the second embodiment, and FIG. 3 is a cross-sectional view of the excrement disposal material 1 according to the second embodiment. That is, the excrement disposal material 1 according to the second embodiment is similar in appearance to the first embodiment, but has a single-layer structure in cross section, unlike the first embodiment. Pulp, superabsorbent resin or the like is used as the water-absorbing matrix 5, and pregelatinized starch or the like is used as the coagulating particles. As the deodorizing / water-absorbing particles 2, silica gel or the like is used as in the first embodiment.
[0047]
[Effects of Second Embodiment]
As described above, the second embodiment differs from the first embodiment only in that it has a single-layer structure. Therefore, compared with the first embodiment, the second embodiment has a simpler manufacturing method and is superior from the viewpoint of productivity.
[0048]
【The invention's effect】
According to the present invention, since it contains a water-absorbing matrix composed of an aggregate of granular materials having water absorption, and deodorized and water-absorbing particles that are fine granular materials having both deodorization and water absorption, It can absorb all excretions such as urine. In addition, unlike conventional excrement disposal materials, at least a part of the surface of the deodorized / water-absorbing particles is not covered with the water-absorbing matrix and exposed to the surface of the excrement disposal material. Therefore, the deodorizing function of the deodorizing / water-absorbing particles is exerted without being inhibited, and the generation of malodor can be prevented.
[Brief description of the drawings]
FIG. 1 is a perspective view of an animal excrement disposal material according to first and second embodiments of the present invention.
FIG. 2 is a cross-sectional view of the first embodiment of the animal excrement disposal material of the present invention.
FIG. 3 is a cross-sectional view of a second embodiment of the animal excrement disposal material of the present invention.
FIG. 4 is a view showing a use mode of the animal excrement disposal material of the present invention.
FIG. 5 is a view showing a use mode of the animal excrement disposal material of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Animal excrement disposal material 2 Deodorizing and water absorption particle | grains 3 Skin material 4 Core material 5 Water absorption matrix 6 Animal excrement disposal material 7 before use Toilet container 8 Animal excrement disposal material solidified by excrement

Claims (9)

An animal excrement disposal material that absorbs animal excrement,
A water-absorbing matrix comprising an aggregate of particulates having water absorption;
Deodorizing and water absorbing particles that are fine granular materials having both deodorizing and water absorbing properties,
The deodorant / water-absorbent particles are dispersed in the water-absorbent matrix, and at least a part of the surface of the deodorant / water-absorbent particles is the animal in all or a part of the deodorant / water-absorbent particles. An animal excrement disposal material, which is exposed on the surface of the animal excrement disposal material. 2. The animal excrement disposal material according to claim 1, wherein the deodorizing / water-absorbing particles are mainly dispersed and arranged in a surface layer portion of the water-absorbing matrix. The animal excrement disposal material is a two-layer structure having a core material and a skin material covering the core material,
The core material and the skin material each have the water-absorbing matrix, and the skin material comprises the deodorizing / water-absorbing particles and the coagulating particles that are granular materials that exhibit the coagulation property when water is absorbed. The animal excrement disposal material according to claim 1 or 2, characterized by comprising: The animal excrement disposal material according to claim 3, wherein the water-absorbing matrix contained in the core material is a natural organic material. The animal excrement disposal material according to any one of claims 1 to 4, wherein the deodorizing / water-absorbing particles are silica gel. The animal excrement disposal material according to any one of claims 1 to 5, wherein the deodorizing / water-absorbing particles have a particle size of 100 µm to 1500 µm. The animal excrement disposal material according to any one of claims 1 to 6, wherein the deodorizing / water-absorbing particles are colored. The animal excrement disposal material according to any one of claims 1 to 7, wherein the deodorizing / water-absorbing particles are discolored by absorbing liquid. The animal excrement disposal material according to any one of claims 1 to 8, wherein the deodorizing / water-absorbing particles are discolored according to a component of the liquid to be absorbed.

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