JPH11318253A - Excrement absorber for pet and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an excrement absorber for a pet capable of having structurally small apparent specific gravity in especially emphasizing to lowering of apparent specific gravity among basic properties and capable of ensuring the basic property while keeping a small apparent specific gravity by selecting a material, and provide a method of its production. SOLUTION: This excrement absorber for a pet is obtained by dropping an aqueous solution of sodium alginate of 1.5% concentration from a small hole in a vessel placed at a position of 200 mm height into an aqueous solution of calcium chloride of 5% concentration, gelling the dropped liquid particle, taking out the resultant granular material from the aqueous solution of calcium chloride, transferring onto the surface in a wet state of a mixture of 100 pts.wt. of wood flour and 3 pts.wt. of MC and uniformly covering the surface with the granular material, then putting the resultant covered material in a fluidizing drier, thus drying to afford the objective excrement absorber for a pet as a hollow granular material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pet excrement absorbent used as a litter for pet toilets such as cats and dogs, and a method for producing the same.

[0002]

2. Description of the Related Art The term "laying material" as used herein refers to a material laid on the bottom of a breeding box, a nesting box, a basket or the like of a bred animal as well as a toilet of a bred small animal. The excrement absorbing material is used to absorb and retain urine excreted by the breeding small animal by laying the excrement on such as a toilet bowl. The breeding small animals are cats, dogs, and other small animals generally bred as pets.

[0003] These excrement absorbents for pets have, as basic performances, a urine absorbing ability for surely absorbing urine excreted by pets, and absorbent particles that have absorbed urine are combined with each other to form a nodule. In addition to the ability to generate nodules and the ability to deodorize and deodorize urine, it is also required to have a light weight and to facilitate handling and handling.

[0004]

SUMMARY OF THE INVENTION The present invention can reduce the apparent specific gravity structurally with emphasis on the reduction of the apparent specific gravity among the above basic performances of the pet excrement absorbent. A pet excrement absorbing material for pets, the other basic performance of which can be easily secured by selecting materials and other simple processing while maintaining a small apparent specific gravity, and the pet excrement absorbing material. An object of the present invention is to provide a manufacturing method.

[0005]

According to a first aspect of the present invention, there is provided a pet excrement absorbent comprising a urine absorbent as a main component and formed into a hollow granular material. Therefore, according to the pet excrement absorbent of the present invention, its apparent specific gravity becomes small, and its transportation and handling become easy. The apparent specific gravity can be freely set by selecting various materials for the urine absorbent, changing the diameter and / or thickness of the hollow granular material, and the like.

A second aspect of the present invention (corresponding to claim 2) is the pet excrement absorbent according to the first aspect of the present invention, wherein the urine absorbent comprises one of an inorganic material powder and a natural organic material powder. Or a pet excrement absorber using a mixture of both. Therefore, according to the pet excrement absorbent of the present invention, by selecting the material of the urine absorbent according to the purpose, the urine absorbent is combustible, decomposable in soil, and urine absorbing capacity. Expensive, strong baby boomers,
Those having high deodorizing ability, those capable of trapping odors therein, and the like can be used. In addition, regardless of the case of the powder of the inorganic material or the natural organic material, when a white or light-colored material is employed, it is easy to look and gives a clean feeling when placed in a room.

A third aspect of the present invention (corresponding to claim 3) is the pet excrement absorbent according to the first aspect of the present invention, wherein the urine absorbent is added with a nodule forming material. Therefore, according to the pet excrement absorbent of the present invention, when urine is absorbed, the hollow particulate matter is combined with each other to form a nodule, and the urine is retained in the nodule without transferring to the other. Only the part that has been exposed to urine is distinguished from the others, and only that part can be easily removed. Therefore it is both economical and hygienic. In addition, when the material forming the urine absorbing material is of a type that does not have a shape-retaining property, the nodule forming material is used as an adhesive bonding the materials forming the urine absorbing material to each other. Also act as a material to form strong hollow granules.

A fourth aspect of the present invention (corresponding to claim 4) is the pet excrement absorbing material according to the first aspect of the present invention, wherein the urine absorbing material is added with a deodorant. Therefore,
ADVANTAGE OF THE INVENTION According to the excrement absorbent material for pets of this invention, since the malodor mainly absorbed by the ammonia odor of the absorbed urine can be absorbed or decomposed, it can be made into a state almost odorless, so that it can be placed indoors. Does not give pleasure or discomfort.

According to a fifth aspect of the present invention, there is provided the pet excrement absorbing material according to the first aspect of the present invention, wherein the hollow granular material has an outer diameter of 1 to 10 mm and a thickness of 0.5 to 2 mm. It is a pet excrement absorbent material with a thickness of 0.0 mm. Therefore, according to the pet excrement absorbing material of the present invention, since the diameter and thickness of each granule are appropriate, when laid in a toilet container, even if the layer is made thin, it is laid almost without gaps. The urine can be reliably absorbed no matter where the pets excrete urine in the toilet container. In addition, since the thickness of the hollow granular material has been adjusted appropriately, in addition to the reduction in weight, it is made to be durable and hard to break when transporting and handling products or when laying in a toilet container and pets riding on it be able to.

A sixth aspect of the present invention (corresponding to claim 6) is that an aqueous solution of a water-soluble polymer substance is placed in an aqueous solution of chloride through a small hole from a height at which liquid particles passing through the small hole can maintain its shape. , And in the aqueous solution of chloride, the liquid particles of the water-soluble polymer substance are gelled to form granules, and then the surface of the granules is coated with a urine absorbing material powder. This is a method for producing a pet excrement absorbent material that is formed into a hollow particulate material by drying and evaporating the water content of a granular material of a water-soluble polymer substance therein. Therefore, according to the method for producing a pet excrement absorbent of the present invention, a pet excrement absorbent that retains the functions and effects of the first to fifth aspects can be produced safely, inexpensively, and easily.

A seventh aspect of the present invention (corresponding to claim 7) is the method for producing a pet excrement absorbent according to the sixth aspect of the present invention, wherein the water-soluble polymer substance contains sodium alginate in an amount of 0.5 to 0.5%.
This is a method for producing a pet excrement absorbent using a 2.5% aqueous solution and a 4 to 6% calcium chloride aqueous solution as the chloride aqueous solution. Therefore, according to the method for producing a pet excrement absorbent of the present invention, in the step of forming liquid droplets by dropping from small holes, it is possible to form stable, hard-to-break liquid particles. In addition, the gelation of the liquid particles can be performed at an appropriate speed, and the ratio of each aqueous solution is moderate, so that the gelation hardness is also moderate, and the urine absorbent powder This is facilitated when drying the granules coated with. Further, the above-mentioned sodium alginate and calcium chloride are both used in the production of human foods, and are extremely safe for pets.

An eighth aspect of the present invention (corresponding to claim 8) is the method for producing a pet excrement absorbent according to the sixth aspect of the present invention, wherein the water-soluble polymer substance contains sodium alginate of 0.5 to 0.5%.
When a 2.5% aqueous solution and a 4 to 6% calcium chloride aqueous solution are used as the chloride aqueous solution, respectively, and the diameter of the small hole is 4 mm, the height of the liquid particles can be maintained. This is a method for producing a pet excrement absorbent that employs a height of 180 to 220 mm. Therefore, 8 of the present invention
According to the method for producing a pet excrement absorbent for pets described above, a liquid particle of a sodium alginate 0.5-2.5% aqueous solution is dropped onto a liquid surface of a calcium chloride 4-6% aqueous solution from a small hole having a diameter of 4 mm. In addition, the shape of the liquid droplets is ensured and good, and there is no problem such as flowing without forming the liquid droplets or breaking the shape of the liquid droplets due to the impact of dropping.

[0013]

Embodiments of the present invention will be described below in detail. The excrement absorbent for pets of the present invention comprises a urine absorbent as a main component, to which a nodule forming material and a deodorant are added as necessary, to form a hollow granular material.

As the urine absorbing material, either one of inorganic material powder and natural organic material powder can be employed, or a mixture of both can be employed. As the inorganic material, bentonite, zeolite, mineral powders such as gypsum, natural organic materials, wood powder, pulp powder, powders such as paper powder, etc. are used, each alone or in combination of both Can be used. In addition, a superabsorbent polymer (superabsorbent resin), which is a synthetic organic material, can be used to enhance urine absorption.

When the urine absorbing material is constituted by using only the organic material as the urine absorbing material, an excrement absorbing material which can be incinerated is obtained, and the treatment after use is further facilitated.
Further, as a hue of these urine absorbents, a white or light-colored one can be preferably used because it has a gentle appearance and gives a clean feeling.

As the agglomeration material, powders of starch, carboxymethylcellulose, methylcellulose, ethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, sodium alginate, guar gum, xanthan gum, bean gum, carrageenan, gluten and the like may be used alone or in combination. Can be. It is appropriate that the amount used is about 3 to 5% of the urine absorbent.

Usually, when these nodules are absorbed, the hollow granules are bonded to each other to form a nodule when the urine is absorbed, and the urine is retained in the nodule without being transferred to the other nodules. In order to make it possible to remove only the part, and when the material constituting the urine absorbing material has no preform, it acts as an adhesive to join those materials together, and a strong hollow It is added to a urine absorbent for the purpose of forming a granular material.

As the deodorant, a natural or synthetic acidic substance such as citric acid, succinic acid or malic acid is added for the purpose of removing malodor mainly composed of ammonia odor in urine. It is appropriate that the amount added is about 3% of the urine absorbent.

It is preferable that the hollow granular material has an outer diameter of about 1 to 10 mm and a thickness of about 0.5 to 2.0 mm. If the outside diameter of the hollow particulate material constituting the excrement absorbent is within this range, when this is laid in a toilet container, even if the layer is thinned, it can be laid without gaps, and the pet can be placed in the toilet container. Even if urine is excreted at any position in the inside, it can be surely absorbed.

When the thickness of the hollow particulate material constituting the excrement absorbent is within the above range, the weight is reduced, and in addition to the pet being transported or handled, or laid in a toilet container, It is durable and hard to break when riding on it. On the other hand, when the outer diameter is smaller than this, it is not easy to reduce the apparent specific gravity and the weight, and a load is imposed on the transportation and handling. Conversely, if the outer diameter is larger than this, when the toilet is laid tightly and without gaps in the toilet container, it is necessary to make the layer thicker, and the amount of use is increased, which is not economical.

On the other hand, if the thickness of the hollow particulate material constituting the excrement absorbent is thinner than this, the strength is weakened, the hollow structure is easily broken, and the appearance is deteriorated. Conversely, if the thickness is thick, the apparent specific gravity is large. It is not preferable because the transporting and handling is burdened after all.

Next, a method for producing the pet excrement absorbent of the present invention will be described. First, a granular material serving as a core of the hollow granular structure is manufactured. First, an aqueous solution of a water-soluble polymer substance is dropped into a chloride aqueous solution through a small hole from a height at which a liquid particle passing through the small hole can maintain its shape. The liquid particles of the water-soluble polymer substance are gelled to form granules, which are taken out by an appropriate means.

Thereafter, a hollow granular material is formed by using the granular material. Then, subsequently, the surface of the granular material taken out as described above is coated with a urine absorbing material powder, and then immediately dried to evaporate the water content of the water-soluble polymer substance granular material inside. Then, by reducing the size, a hollow granular material is formed.

As the water-soluble polymer substance, sodium alginate is usually preferably used in consideration of safety and cost.
About 5% is preferably used.

When the concentration of the aqueous sodium alginate solution is 0.5% or less, the shape of the liquid particles after dropping the aqueous sodium alginate solution is unstable, and the gelled particles are soft and easily collapsed. Conversely, when the concentration is 2.5% or more, the viscosity of the aqueous sodium alginate solution becomes too high, and it is difficult to drop the solution, assuming that the pore size of the small hole for dropping therefrom is about 4 mm. The resulting gel particles are hard and do not collapse, but are difficult to dry in a later step. Further, when the concentration is 3% or more, the viscosity of the solution is further increased, and dripping cannot be performed at all under the above preconditions.

Examples of the water-soluble polymer include sodium alginate, propylene glycol alginate, sodium cellulose glycolate, calcium cellulose glycolate, sodium starch glycolate, sodium starch phosphate, polyacrylic acid. Sodium, methylcellulose and the like can be used alone or in combination of two or more.

The pore size of the small pores varies depending on the water-soluble polymer substance used. When sodium alginate is used and the concentration of the aqueous solution is 0.5 to 2.5%, the pore size is usually About 4 mm is appropriate. In the case of such a pore diameter, it is preferable that the shape of the dropped liquid droplets becomes stable if an appropriate drop height is set.

A 0.5 to 2.5% aqueous solution of sodium alginate is used as the water-soluble polymer substance, and a 4 to 6% aqueous solution of calcium chloride is used as the chloride aqueous solution. In this case, the height at which the liquid droplets can maintain the shape is 4 to 4 of calcium chloride.
A height of about 180 to 220 mm from the level of the 6% aqueous solution is appropriate. By setting the height to this level, it is easy to obtain a liquid particle of sodium alginate having a good shape and good shape. If the height is lower than this, the liquid particles flow and the shape becomes unstable, while if it is higher than this, the liquid particles are broken by an impact when dropped on the liquid surface, which is inconvenient.

As the aqueous chloride solution, an aqueous chloride solution which generates divalent or higher valent metal ions including calcium chloride, zinc chloride, magnesium chloride and the like can be used. An aqueous solution of calcium chloride is preferred because it has a progress rate. The concentration of the aqueous solution of calcium chloride is preferably about 4 to 6% because the liquid particles of sodium alginate can be gelled to an appropriate hardness in an appropriate time (40 to 60 seconds). Here, when the concentration of the aqueous solution of calcium chloride is 3.5% or less, gelation is unstable, and the time required for gelation becomes longer, resulting in poor efficiency.
On the other hand, if the content is less than 1.5%, the liquid particles cannot be gelled. vice versa,
At 6.5% or more, the gelation proceeds sufficiently to form a liquid particle with a clean surface, but the riding of the urine absorbing material coated thereon becomes poor, and the coated urine absorbing material tends to peel off. The coating becomes unstable. Further, the progress of the gelation is too fast and the workability is poor, and the gelation proceeds too much and becomes hard,
It becomes a granular material that is difficult to dry and shrink.

Further, the manufacturing method will be specifically described step by step. First, an aqueous solution of calcium chloride having a concentration of 4 to 6% is put in a container of an appropriate size to prepare a gelling solution of sodium alginate liquid particles.

On the other hand, an aqueous solution of sodium alginate having a concentration of 0.5 to 2.5% is placed in a container having a large number of small holes having a diameter of about 4 mm at the bottom and dropped from a position having a height of about 180 to 220 mm. The liquid droplets are received with the previously prepared aqueous solution having a concentration of 4 to 6% of calcium chloride, and the liquid droplets of sodium alginate are gelled in about 40 to 60 seconds to produce granules.

Next, the granular material is separated from the calcium chloride solution by a screen or a colander (the recovered calcium chloride solution is returned to the container and circulated), and the surface of the granular material is kept wet. Then, the particles are transferred onto the urine absorbing powder, and the surface of the granular material is almost uniformly coated with the urine absorbing material to a thickness of about 0.5 to 2.0 mm.

Further, immediately after that, this is sent to a drier and dried while slowly flowing to evaporate the moisture inside the above-mentioned granules, whereby the outer diameter is 1 to 10 mm and the thickness is 0.5 to 0.5 mm.
A pet excrement absorber having a hollow structure of about 2.0 mm can be obtained.

[0034]

Next, the present invention will be described in more detail with reference to the following examples, which are intended to explain the effects of the present invention and do not limit the present invention.

<Example 1> A 5% -concentration aqueous solution of calcium chloride was placed in a container having a length of about 300 mm, a width of about 400 mm and a depth of about 350 mm, and placed about 250 mm in depth. Next, a 1.5% strength aqueous sodium alginate solution was placed in a container having a number of small holes having a diameter of 4 mm at the bottom of another container, and a small hole at the bottom of the container was placed at a height of 200 mm. The liquid droplets of sodium alginate are dropped into the 5% -concentration aqueous solution of calcium chloride, and the liquid particles are gelled in about 50 seconds into granules. Separated from the aqueous solution and transferred to the following material 1 in a flat container in a wet state,
While the container is vibrated, the surface of the granular material is uniformly coated with the material 1. Next, this was placed in a fluidized drier and dried at a temperature of 90 ° C. for 15 minutes while slowly flowing to obtain a pet excrement absorbent of Example 1. [Material 1] Bentonite 100 parts by weight

<Example 2> A pet excrement absorbent for Example 2 was obtained in the same manner as in Example 1 except that Material 1 of Example 1 was replaced with Material 2 below. [Material 2] Bentonite 100 parts by weight Methyl cellulose 3 parts by weight

Example 3 A pet excrement absorbent of Example 3 was obtained in the same manner as in Example 1 except that Material 1 of Example 1 was replaced with Material 3 below. [Material 3] Wood flour 100 parts by weight Methyl cellulose 3 parts by weight

Example 4 A pet excrement absorbent for Example 4 was obtained in the same manner as in Example 1 except that Material 1 of Example 1 was replaced with Material 4 below. [Material 4] Wood flour 100 parts by weight Gypsum 5 parts by weight Methyl cellulose 5 parts by weight

Example 5 A pet excrement absorbent of Example 5 was obtained in the same manner as in Example 1 except that Material 1 of Example 1 was replaced with Material 5 below. [Material 5] Wood flour 100 parts by weight Gypsum 5 parts by weight Methylcellulose 5 parts by weight Citric acid 3 parts by weight

Example 6 A pet excrement absorbent of Example 6 was obtained in the same manner as in Example 1 except that Material 1 of Example 1 was replaced with Material 6 below. [Material 6] Paper powder 100 parts by weight Methyl cellulose 3 parts by weight

Example 7 A pet excrement absorbent of Example 7 was obtained in the same manner as in Example 1 except that Material 1 of Example 1 was replaced with Material 7 below. [Material 7] Paper powder 100 parts by weight Plaster 5 parts by weight Methyl cellulose 3 parts by weight

Example 8 A pet excrement absorbent of Example 8 was obtained in the same manner as in Example 1 except that Material 1 of Example 1 was replaced with Material 8 below. [Material 8] Paper powder 100 parts by weight Gypsum 5 parts by weight Methylcellulose 5 parts by weight Citric acid 3 parts by weight

<Comparative Example 1> The raw material 2 used in Example 2 was kneaded with an appropriate amount of water, and granulated by a granulator into granules having a diameter of about 4 mm. 1 in C
After drying for 0 minutes, the mixture was finally sieved to obtain a granular material having a size of about 3.5 mm.

<Comparative Example 2> The raw material 3 used in Example 3 was kneaded with an appropriate amount of water, and granulated by a granulator into granules having a diameter of about 4 mm. 1 in C
After drying for 0 minutes, the mixture was finally sieved to obtain a granular material of about 3.5 mm, which was used as a pet excrement absorbing material of Comparative Example 2.

<Comparative Example 3> The raw material 6 used in Example 6 was kneaded with an appropriate amount of water, and granulated by a granulator into granules having a diameter of about 4 mm. 1 in C
After drying for 0 minutes, the mixture was finally sieved to obtain a granular material having a size of about 3.5 mm.

Comparative Example 4 A columnar excrement absorbing material of about 3 mm made of commercially available paper was used as Comparative Example 4.

Comparative Example 5 A rod-shaped excrement absorbing material of about 4 mm made of commercially available wood was used as Comparative Example 5.

Comparative Example 6 A columnar excrement absorbing material of about 3 mm made of commercially available bentonite was used as Comparative Example 6.

Each of the pet excrement absorbents obtained in Examples 1 to 8 and Comparative Examples 1 to 6 was used as a test sample, and each of the following items was measured by the corresponding measuring method. Table 1 summarizes the results.

<Measurement Items and Measurement Method> Apparent specific gravity: A sample was dropped from a position of 20 cm height into a cylindrical container having a diameter of 5 cm, a height of 5 cm, and a content of 100 ml and weighed in advance. At the point when the falling object of the sample rises from the sample, it is cut off at the edge of the opening and the weight of the container with the sample is measured. The weight value of the container is subtracted from the measured weight value, and the obtained value is divided by 100 to obtain an apparent specific gravity. That is, apparent specific gravity = content weight (g) / 1.
00 (ml)

Absorption: 10 g of a sample is placed in a 200 ml beaker, 1% saline is poured little by little onto the sample, and the weight is measured at the time when water cannot be completely absorbed.
The sample weight value is subtracted from the measured weight value, and the obtained weight value is converted into a saline solution volume value, which is defined as the water absorption. (Unit: m
l)

Deodorizing power: 20 g of a sample is placed in a 300 cc Erlenmeyer flask, 0.1 g of 10% aqueous ammonia is dropped into the sample, and the sample is immediately sealed. After 10 minutes, the residual concentration of ammonia in the flask is measured with a gas detector tube. (Unit: pp
m)

[0053]

[Table 1]

As is apparent from the data shown in Table 1, the apparent specific gravity is 0.21 or 0.2 in Example 1 or 2 in which bentonite is the main material.
4, the value of Comparative Example 1 having the same composition as Example 1 is 0.74, and that of Comparative Example 6, which is a commercially available absorbent mainly composed of bentonite, is 0.80.
Thus, Examples 1 and 2 were compared with Comparative Examples 1 and 6.
With the same or almost the same composition, the apparent specific gravity is approximately 1/3 to 1/4, which indicates that the apparent specific gravity can be sufficiently reduced.

The apparent specific gravity of Examples 3 to 5 using wood flour as a main material is 0.11 to 0.15, and that of Comparative Example 2 having the same composition as that of Example 3 is 0.31. Comparative Example 5 which is a commercially available absorbent mainly made of wood flour has 0.28
It is. Thus, Examples 3 to 5 have the same or almost the same composition as Comparative Examples 2 and 5, and have an apparent specific gravity of about 1/2, which is smaller than the case where bentonite is the main material. Although the difference from the comparative example is small, it can be seen that the apparent specific gravity can be sufficiently reduced.

The apparent specific gravity of Examples 6 to 8 using paper powder as a main material is 0.15 to 0.18, and that of Comparative Example 3 having the same composition as that of Example 6 is 0.28. In Comparative Example 4, which is a commercially available absorbent mainly composed of paper powder, that of 0.27
It is. Thus, Examples 6 to 8 are approximately the same as Comparative Examples 3 and 4 with the same or almost the same composition, and are approximately 2/3 to 1/2.
The apparent specific gravity is smaller than that in the case of using the bentonite or the wood flour as a main material, but it can be seen that the apparent specific gravity can be sufficiently reduced.

The difference in apparent specific gravity between the example and the comparative example is largest when bentonite is the main material, because the true specific gravity of bentonite is the largest. In the case where wood powder is used as the main material and the case where paper powder is used as the main material, the difference in apparent specific gravity from the comparative example becomes smaller in that order. This is also considered to be due to the fact that the true specific gravity of the wood flour, which is the main material, is larger than that of the paper flour.However, since the difference between the apparent specific gravity and the comparative example is not large, other factors It could be the cause.

Thus, according to the examples, it can be seen that the greater the true specific gravity of the urine absorbent as the main material, the more the apparent specific gravity can be reduced. In any case, as described above, the excrement absorbent for pets of the embodiment has a small apparent specific gravity and a light weight per unit surface area, so that the product can be easily transported and carried. I understand.

In terms of the amount of water absorption, in the case of Examples 1 and 2 in which bentonite was used as the main material, the amount was 27.0 ml or 26.0 ml, whereas the comparative example comprising the same or almost the same main material was used. For 1 and 6, 13.3 ml or 15.
0 ml, which indicates that Examples 1 and 2 have a water absorption about 1.7 to 2 times that of Comparative Examples 1 and 6. In the case of Examples 3 to 5 using wood flour as the main material, 42.0 to 45.0.
ml, whereas in Comparative Examples 2 and 5 made of the same or almost the same main material, it is 37.5 ml or 18.0 ml, and in this case, Examples 3 to 5 are Comparative Examples 2 and 5. It can be seen that it has about 1.12 to 2.5 times the water absorption. Further, in the case of Examples 6 to 8 using paper powder as a main material, 3
6.0 to 43.0 ml, whereas in Comparative Examples 3 and 4 made of the same or almost the same main material, 35.0 ml
Or 12.0 ml. In this case, it can be seen that Examples 6 to 8 have about 1.03 to 3.5 times the water absorption of Comparative Examples 3 and 4.

In each of the examples, compared with the corresponding example in the comparative example, the water absorption was excellent, and the amount of the material used was reduced if the outer diameter was the same because of the hollowness. Nevertheless, it can be seen that the ability to absorb urine has increased.

Regarding the deodorizing power, in Examples 5 and 8 in which citric acid was blended as a deodorizing material, the residual ammonia concentration was 15 ppm, which was compared with the other Examples and Comparative Examples in which no deodorizing material was blended. , 1/4 to 1/2 of them
It has a residual concentration of 0, indicating extremely excellent deodorizing properties. Example 2 and Comparative Example 1 each having the same composition
Compared with the former, the residual ammonia concentration of the former is 160pp
m, whereas that of the latter is 170 ppm. Comparing Example 3 with Comparative Example 2, the former has a residual ammonia concentration of 250 ppm, whereas the latter has a residual ammonia concentration of 250 ppm.
pm, comparing Example 6 with Comparative Example 3, the former has a residual ammonia concentration of 300 ppm, while the latter has a residual ammonia concentration of 500 ppm. When no deodorizing material is used, there is almost no difference between the example and the comparative example, or a slightly superior degree.

[0062]

As described above, according to the pet excrement absorbent of one aspect of the present invention, the apparent specific gravity is reduced, and the transportation and handling are facilitated. Further, the apparent specific gravity can be freely set by appropriately selecting the material of the urine absorbing material or changing the diameter of the hollow granular material.

According to the excrement absorbing material for pets of the second aspect of the present invention, by selecting the urine absorbing material according to the purpose, it is combustible, decomposable in soil, and urine absorbing capacity. It can be appropriately configured as a material having a high water content, a material having a strong nodule generation ability, a material having a high deodorizing ability, a material capable of trapping an odor, a light or heavy material, or the like. Further, when a white or light-colored material is used as the urine absorbing material, it gives a feeling of cleanliness when placed in a room with a gentle appearance.

According to the excrement absorbing material for pets of the third aspect of the present invention, when urine is absorbed, the hollow particulate matter is combined with each other to form a nodule, and the urine is stored in the nodule without being transferred to another. However, only the part where urine is applied is distinguished from the others, and only that part can be easily removed, so that it is economical and sanitary. Further, depending on the material constituting the urine absorbing material, the material also acts as an adhesive between the urine absorbing materials, and becomes a material forming a strong hollow granular material.

According to the excrement for pet excrement 4 of the present invention, the odor mainly absorbed by the ammonia odor of the absorbed urine is adsorbed or decomposed to a state close to odorless. Does not give pleasure or discomfort.

According to the pet excrement absorbing material 5 of the present invention, when the pet excrement is laid in a toilet container, even if the layer is made thin, it can be spread almost without gaps, and the pet can be placed at any position in the toilet container. Even if urine is excreted, it can be reliably absorbed. In addition to reducing the weight, it is possible to form a durable hollow granular material that is hard to break when transported or handled, or when a pet rides on it laid in a toilet container.

According to the method of manufacturing a pet excrement absorbent of the sixth aspect of the present invention, it is possible to safely, inexpensively and easily manufacture a pet excrement absorbent retaining the functions and effects of the first to fifth aspects. it can.

According to the method for producing a pet excrement absorbent of the seventh aspect of the present invention, in the step of forming liquid droplets by dripping through small holes, it is possible to form stable, hard-to-break liquid droplets. it can. In addition, when the liquid particles are gelled, gelation can be performed at an appropriate progress rate, and since the ratio of each aqueous solution concentration is moderate, the hardness of the gelation becomes moderate, and drying is performed when drying. It will be easier. Furthermore, these materials are used in the manufacture of human food and are very safe for pets.

According to the method for producing a pet excrement absorbent according to item 8 of the present invention, sodium alginate is used in an amount of 0.5 to 2.5%.
When the liquid droplets of the aqueous solution are dropped on the liquid surface of the 4 to 6% aqueous solution of calcium chloride, a good liquid droplet having a good shape can be obtained. Is not broken.

Claims (8)

[Claims] 1. An excrement absorbent for pets comprising a urine absorbent as a main component and formed into a hollow granular material. 2. The excrement absorbent for pets according to claim 1, wherein either one of inorganic material powder and natural organic material powder or a mixture of both is employed as said urine absorbent. 3. The excrement absorbent for pets according to claim 1, wherein a nodule generator is added to said urine absorbent. 4. The pet excrement absorbent according to claim 1, wherein a deodorant is added to said urine absorbent. 5. The excrement absorbent for pets according to claim 1, wherein said hollow granular material has an outer diameter of 1 to 10 mm and a thickness of 0.5 to 2.0 mm. 6. An aqueous solution of a water-soluble polymer substance is dropped through a small hole into an aqueous solution of chloride from a height at which a liquid particle passing through the small hole can maintain its shape. Then, the liquid particles of the water-soluble polymer substance are gelled into granules, and then the surface of the granules is coated with a urine absorbent powder, and then dried to form a water-soluble polymer substance inside. A method for producing a pet excrement absorbent, which is formed into a hollow granular material by evaporating the water content of the granular material. 7. The pet according to claim 6, wherein a 0.5 to 2.5% aqueous solution of sodium alginate is used as said water-soluble polymer substance, and a 4 to 6% aqueous solution of calcium chloride is used as said chloride aqueous solution. Method for producing excrement absorbents. 8. A 0.5 to 2.5% aqueous solution of sodium alginate as the water-soluble polymer substance, a 4 to 6% aqueous solution of calcium chloride as the aqueous solution of chloride, and the small pores are used. When the diameter of the liquid particles is 4 mm, the height at which the liquid droplets can maintain the shape is 180 to 22.
7. The method for producing a pet excrement absorbent according to claim 6, wherein the height is 0 mm.