JP2000060338A - Granular treating material for animal excrement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a granular treating material for animal excrement composed of a specific granule and a surfactant attached to the surface of the granule, enabling effective utilization of resources having excellent deodorizing property and water-absorptivity and preservable over a long period without causing the generation of mold, or the like. SOLUTION: The objective treating material is composed of a granule having a particle diameter of <=3 mm and produced by granulating waste paper powder such as crushed waste paper having scarcely wettable surface and a powdery water-absorbing resin such as a crosslinked polyacrylic acid of an amount less than the amount of the waste paper powder and a surfactant such as an anionic surfactant attached to the surface of the granule. Preferably, the waste paper powder is crushed materials of waste paper diaper, slitting scrap of paper diaper, printed paper or paper having paraffin-coated or plastic-coated surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste paper material, that is, a crushed waste material of a paper diaper, a crushed waste material for manufacturing a diaper, a punch waste material, a crushed waste paper material, or a laminated paper. Crushed paper whose surface is covered with paraffin film or plastic material film Crushed paper waste material such as paper diaper waste powder, etc., or a mixture of the above, or an animal using as a raw material a mixture of the above paper waste material and plastic waste material For excrement disposal material for animal and its manufacturing method,
The present invention relates to an animal excrement disposal material that can be incinerated in a water-containing state after use and a method for producing the same.

[0002]

2. Description of the Related Art As an animal excrement disposal material such as cat sand,
Mineral sand such as zeolite is used. But,
Cat sand made from such mineral sand is a problem because it is difficult to dispose of it after use. Therefore, flammable pulp or paper powder that is easily wetted by water is mixed with a super absorbent resin to form a granular shape. These cat sands are collected with garbage, crushed with the garbage and incinerated.

[0003]

However, the use of crushed pulp is problematic because it is more difficult to obtain than before and it is relatively expensive. The present inventor has already, for example, crushed waste paper diaper waste materials such as defective paper diapers,
Crushed waste animal paper diapers such as defective animal paper diapers,
Pulverized material of sanitary napkin waste such as defective sanitary napkin,
The crushed product of waste milk pads such as bad milk pad, the crushed product of sweat pad waste such as bad sweat pad, the crushed product of plastic coated processed paper waste and / or the crushed product of plastic waste material should have water absorption and water retention. It was discovered, and it was proposed to granulate the crushed materials of these waste materials and to make them as animal excrement disposal materials such as cat sand. In addition, the present inventor considers that among the pulverized materials of these waste materials, in the case of a material such as newspaper that is relatively easy to repel water, even if it has water retention, the water absorption rate becomes relatively small, which is a problem. ing. The present invention is intended to solve the problems related to the water absorption speed of waste paper materials.

[0004]

DISCLOSURE OF THE INVENTION The present invention provides a material for treating animal excrement having a large water retention and water absorption rate even in the case of a paper waste material, particularly a material which is relatively water repellent such as newspaper. Is intended to provide. The present inventor treats the surface of a granulated product of a pulverized material of a paper waste material and a pulverized material of a plastic waste material which are difficult to wet with water or repels water with a surfactant to increase the water absorption performance and increase the water absorption rate. The present invention has been accomplished by discovering that the amount is increased and that it can be used as cat sand.

That is, according to the present invention, a granular material containing a waste paper powder having a grain size of 3 mm or less and a powdery water-absorbing resin in an amount smaller than that of the waste paper, and a granular surface are provided on the surface of the granular material. The present invention relates to a granular animal excrement disposal material characterized by having a surfactant attached, and the present invention also relates to a paper waste material powder having a particle size of 3 mm or less, and a water absorbent resin and an amount less than that of the paper waste material. Granules having a grain size of 3 mm or less and containing a smaller amount of plastic waste material powder than paper waste material powder, and a granular material characterized by having a surface-active agent attached to the surface of the granular material. It is found in animal excrement disposal materials.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, a paper waste material which is hard to get wet with water or easily repels water is, for example, a crushed material of a disposable diaper material, a crushed material of a cutting waste during the production of a paper diaper, a punch waste material, a waste paper, a print. Crushed printed paper such as newspapers, magazines and advertisements, or crushed paper such as laminated paper whose surface is covered with paraffin film or plastic material film, crushed paper waste materials such as paper diaper waste powder, etc. In addition, the above mixture or a mixture of the above-mentioned waste paper and crushed plastic waste is included.

In the present invention, the surfactant is a granulated product of a pulverized waste paper material, which is applied in order to increase the water absorption rate, and may be a cationic surfactant, a nonionic surfactant or a surfactant. , Anionic surfactants can be used. Examples of anionic surfactants include dodecylbenzene sulfonic acid and sulfosuccinic acid type anionic surfactants, and examples of nonionic surfactants include octyl phenyl ether and polyoxyethylene derivatives, and cations. Examples of the surfactant include lauryl trimethyl ammonium chloride, stearyl trimethyl ammonium chloride, and coconut amine acetate.

In the present invention, the granulated product may be a pulverized product of waste paper material or a mixture of the pulverized product of waste paper material and a water absorbent resin. In the present invention, the granular animal excrement disposal material has a water content of 15% by weight or less, preferably 10%.
Drying to a weight percentage can prevent the development of mold during storage, so when granulating with a moisture content of 20 wt% or more, the final moisture content should be 10 wt% or less. It is preferable to dry until.

In the present invention, the pulverized particles of laminated paper have water absorbability and water retentivity because they can be wet with water and can retain water between the pulverized particles. It is preferable to add a functional resin, since the excrement can be absorbed and the water can be sufficiently retained when the granular animal excrement disposal material is used. Further, adding a water-absorbent resin to the mixture used for molding enhances the water-retaining function of the mixture to be molded in the step of granulating the mixture to be molded, and also serves as a lubricant during granulation of the mixture to be molded. In order to function, extrusion granulation can be performed smoothly,
More preferable. In this case, the water absorbent resin is 1
It is set to 0% or less, preferably 0.5 to 5% by weight.

In the present invention, the animal excrement disposal material is
The core and / or the coating can be formed. In this case, the highly water-absorbent resin can be used for the core part or the covering part or the core part and the covering part. In the granular core portion of the granular animal excrement disposal material, for example, when a superabsorbent resin is blended, the superabsorbent resin absorbs water from the periphery of the granular core portion during excretion,
Since it swells and acts to retain water, the humidity of the core portion and the coating portion can be adjusted, which is preferable.

In the present invention, the superabsorbent resin is a resin capable of retaining its shape even when absorbing several tens to 200 times its own weight of water, such as vinyl ester and ethylenically unsaturated carboxylic acid. Or a saponified copolymer of a derivative thereof, a graft polymer of starch and acrylic acid, a crosslinked product of polyacrylic acid, a copolymer of vinyl alcohol and acrylic acid, a partial hydrolyzed product of polyacrylonitrile, and a crosslinked product of carboxymethylcellulose. , Cross-linked polyethylene glycol, chitosan salt, pullulan gel and the like, and these are used as a compounding substance alone or in a mixture of two or more kinds of waste diapers.

In the present invention, the water-absorbent resin is preferably a highly water-absorbent resin having high water-absorbing performance, but for example, the water-absorption capacity is less than 20 g / g and the water-absorbing performance is poor.
A defective resin can be used as the highly water-absorbent resin. Such defective polyacrylic acid resin products having low water absorption performance have a particle size of 600 μm or more and 10 μm or less.
Some of them are as fine as m or less, and defective products of these super absorbent polymers can be obtained, for example, by classifying them from waste diaper materials, or can be obtained as non-standard products of polyacrylic acid resin. Defective products having a particle size of 600 μm or more are preferably used for the granular core part, and fine defective products having a particle size of 10 μm or less are preferably used for the coating part. Thus, since the waste material of the diaper contains the highly water-absorbent resin, when the waste material of the diaper is mixed with the paper powder, the amount of the water-absorbent resin added can be reduced accordingly.

In the present invention, the granulated product of the animal excrement disposal material may be a granulated product alone, but may have a core and a coating layer. When forming the core part and the coating part, it is preferable that the surfactant is contained in the coating part. In the present invention, an antifungal agent, that is, a substance having a bactericidal action can be added to the granular core portion or the coating layer portion or the granular core portion and the coating layer portion in order to prevent the generation of mold during storage. Examples of the fungicide having such a bactericidal action include salt, sorbic acid or a salt thereof, calcium propionate, sodium hypochlorite and / or sodium benzoate or a salt thereof, a preservative and a fungicide. There is. In the present invention, it is preferable to mix an adsorbent or deodorant such as powdered activated carbon, bentonite or silica into the granular granules, the core or the coating material.

In the present invention, in order to avoid pulverization of the excrement disposal material at the time of use, it is preferable to add a substance having an adhesive function to the pulverized waste diaper powder. Examples of substances having such an adhesive function include water-soluble or water-dispersible substances such as paper powder, paper pulp, paper sludge, pulp sludge, polyvinyl alcohol (PVA), wheat flour, starch, corn starch, carboxymethyl cellulose (CMC). ), Pullulan, gelatin and the like, which can be used alone or can be used as a blended substance by mixing two or more kinds thereof. Further, as the alcohol-soluble compounding substance, there are hydroxyethyl cellulose (HEC), hydroxypropyl cellulose (HPC), polyvinylpyrrolidone or (PVP) and the like. In this case as well, these are each used alone, Alternatively, two or more of these may be mixed and used.

In the present invention, when the granular animal excrement treating material is granulated by mixing bentonite powder and / or amorphous silica powder with waste diaper waste material powder, fine dust after granulation is obtained. In order to avoid its existence as much as possible, it is preferable to granulate into granules with a particle size of 3 mm or more, but granulating into particles with a particle size of 5 mm or more makes it difficult to disperse from the toilet box into the room, for example. Even if the particles are scattered temporarily, it is easy to collect the particles, which is preferable from the viewpoint of maintaining hygiene in the room. However, in these cases, the presence of particles of 3 mm or less and the presence of particles of 5 mm or less are not completely excluded. In the present invention, the granulated product, spherical, columnar, granular,
It can be formed into various shapes such as granules.

Further, when the paper waste powder of the coating material to be attached to the surface of the granulated product of the waste paper diaper is adhered together with the water-soluble or alcohol-soluble adhesive, the granulated product is excreted when the animal is excreted. The urine and the like adhered to the granules are preferable because the granules are easily stuck to each other and solidify. When the coating layer formed on the surface of the granulated product of waste paper diaper powder is formed of a mixture of waste paper powder and water-absorbent resin, if polyacrylamide having a cohesive action is blended, the mutual adhesion of the coated particles will be good. preferable. In the present invention, the mixture of waste diaper powder and superabsorbent resin can be mixed in a mixing device with or without water and granulated by a granulating device. As the granulating device, a conventionally well-known extrusion granulating device can be used when water is added and mixed, and a roll type disc extrusion granulator or a disk pelleter can be used when mixing without adding water. And the like. When adding water and granulating,
Drying is necessary, but when granulating without adding water,
When the coating layer is formed, it is sprayed with water, but it can be 5% by weight or less and can be manufactured without a drying step.

However, in the present invention, when granulating by adding water, various granulating apparatuses of pan type, drum type and fluidized bed type can be used in addition to the extrusion granulating apparatus. In the granulated product of the waste paper diaper powder, after granulation, a substance having an adhesive ability, a water-absorbent resin, an oil-absorbing material, a substance having a bactericidal action or the like is sprayed to obtain the desired property on the surface of the granulated product. It is preferable that a coating layer having the above-mentioned structure is formed, a substance having an adhesive property or the like is attached to the coating layer, and then the coating layer is dried so as not to be easily peeled off.

The granular animal excrement disposal material of the present invention comprises:
In particular, in the step of coating the coating material on the granules to be the core, waste paper powder and superabsorbent resin, and additionally wheat flour, poval, starch or other substances having an adhesive action, or a substance having a bactericidal action Alternatively, since two or more of these compounded substances can be mixed, they adhere to the animal excrement and wrap the excrement in a lump form, and the disposition is simple and easy. Further, when a deodorant and / or a water absorbent is mixed in the coating layer, the smell of food and drink adhering to tableware such as diaper waste powder dishes is eliminated, and the deodorant is excellent as a material for excrement disposal for animals. And water absorbency can be exhibited. Furthermore, when the granular core portion and / or the covering portion is mixed with a substance having a bactericidal action, the animal excrement disposal material can be stored for a long period of time without generation of mold or the like. it can

[0020]

EXAMPLES The embodiments of the present invention will be described below with reference to examples, but the present invention is not limited to the following description and examples. FIG. 1 is a schematic process drawing showing a process for producing a granular animal excrement disposal material according to an embodiment of the present invention.

In FIG. 1, an apparatus 1 for producing granular animal excrement disposal materials comprises a belt 2 for feeding waste newsprint paper.
Is connected to the crusher 3. In this example, the outlet 4 of the crusher 3 is connected to a belt conveyor 5 for forming a dry crushing pulp for newspaper, and the outlet 6 of the belt conveyor 5 is connected to a belt conveyor 7. The belt conveyor 7 is connected to the inlet 9 of the crusher 8 and
The outlet section 10 of is connected to an inlet section 13 of a settling chamber 12 for settling and separating the pulverized material via an air transfer pipe 11. The outlet 14 of the settling chamber 12 is connected to a screw feeder 15, and the screw feeder 15 is provided with a superabsorbent resin supply tank 16 for supplying superabsorbent resin to crushed newsprint paper via a quantitative conveyor 17. A water supply tank 18 for supplying granulation water to the mixture of newsprint and super absorbent resin is connected via a water supply pipe 19 to the downstream side thereof. In this example, the screw feeder 15 is connected to the inlet portion 21 of the disk pelleter type granulator 20. The outlet 22 of the granulator 20 is connected to a belt conveyor 23, and the granulated material thus granulated is vibrated from the outlet of the granulator 20 by the belt conveyor 23.
4 is sent to the inlet 25. In this example, the vibration type coating device 24 is provided with a spray nozzle 27 of a hydrophilic agent spraying device connected to the hydrophilic agent dilution tank 26 so as to project therefrom. The outlet pipe 28 of the vibrating type covering device 24 is
The granules extending in 9 and coated with the hydrophilic agent are sent to the vibrating type sieving machine 29, and the granulated matter having a diameter of 5 mm and a length of 6 mm is sieved, and the outlet portion 30 of the vibrating type sieving machine 29 is Is sent to the belt conveyor 31 connected to. The outlet 32 of the belt conveyor 31 is connected to the product tank 33 and has a diameter of 5 m.
m products are collected and sent to the automatic packaging device 35 via the belt conveyor 34 connected to the product tank 33 to be packaged.

Example 1 In the apparatus shown in FIG. 1, in the apparatus 1 for producing granular animal excrement disposal materials, first, a belt 2 for feeding waste newsprint materials is used.
Then, 95 parts by weight of newspaper is supplied and crushed by the crusher 3. In this example, the roughly crushed newspaper is sent from the outlet 4 of the crusher 3 to a crusher 8 via belt conveyors 5 and 7 to form a dry crushing pulp of the newspaper, and is crushed to a particle size of 3 mm or less. . The crushed crushed newspaper is
The outlet part 10 of the crusher 8 is sent from the inlet part 13 to the settling chamber 12 for settling and separating the pulverized material via the air transfer pipe 11, and is separated in the settling chamber 12. The crushed newsprint material separated in the settling chamber 12 is sent to the screw feeder 15, and 5 parts by weight of the superabsorbent resin is mixed with the crushed newsprint material from the superabsorbent resin supply tank 16 through the quantitative conveyor 17. Next, 10% of the total water is supplied from the water supply tank 18 through the water supply pipe 19 to the mixture of the crushed newsprint containing the superabsorbent resin and the superabsorbent resin. The mixture of crushed newspaper and highly water-absorbent resin mixed with water is introduced by a screw feeder 15 into an inlet 21 of a disk pelleter type granulator 20 and granulated.
The granulated product granulated by the granulator 20 is fed from the outlet of the granulator 20 through a belt conveyor 23 to a vibration type coating device 24.
To the inlet 25 of the hydrophilic agent dilution tank 26 where
The hydrophilic agent diluting liquid is sprayed from the spray nozzle 27 of the hydrophilic agent spraying device. The granulated material sprayed with the hydrophilic agent diluting liquid is passed through the outlet pipe 28 of the vibrating type coating device 24 to the vibrating type sifter 29.
The granules that have been sent to and coated with the hydrophilic agent are vibrated type sifter 29
Then, a granulated product having a diameter of less than 5 mm and a length of less than 6 mm can be sieved. Sifted diameter 5 mm or more and length 6 mm
The above-mentioned crushed newsprint and granulated product of super absorbent polymer are
It is delivered to the belt conveyor 31 from the outlet 30 of the vibrating screen 29. The mixed granulated product sent to the belt conveyor 31 is introduced into the product tank 33 from the outlet 32, and the product having a diameter of 5 mm and a length of 6 mm is collected. The products collected in the product tank 33 are sent to the automatic wrapping device 35 via the belt conveyor 34 connected thereto and packaged.

Example 2 In this example, a crushed material of newspaper was used as the waste paper powder, and 5% of a super absorbent polymer (super absorbent polymer) was mixed and granulated to produce animal excrement. Although treated as a treated material, since the waste paper diaper material contains a highly water-absorbent resin, 15 parts by weight of a crushed product having a particle size of 3 mm or less of a defective paper diaper, which is generated in the cutting step during the production of the paper diaper, is mainly made of polyethylene and polypropylene. 3 of cutting waste (trim loss) contained
80% by weight of a pulverized product having a particle size of mm or less and 5% by weight of a pulverized product of a defective sanitary napkin can be mixed and granulated to obtain an animal excrement disposal material.

Example 3 In this example, as waste paper powder of Example 1, 30% by weight of a crushed product of defective paper diaper was used instead of a crushed product of newspaper and 5% of a super absorbent polymer (super absorbent polymer). 70% by weight of trim loss can be used as an animal excrement disposal material.

Test Examples As the hydrophilic agents used in Test Examples 1, 2, and 3, for each surfactant, 10 ml of surfactant was diluted with 80 ml of water to dilute the surfactant (a), 10 ml of the surfactant. An animal excrement disposal material produced by using a surfactant diluent (b) prepared by diluting 10 ml of water with 140 ml of water and a surfactant diluent prepared by diluting 10 ml of surfactant with 740 ml of water is used as a sample. , For each sample, 140 mm in diameter and 1 in height
A 50 mm glass cylindrical container was filled to a height of 100 mm, and 20 ml of simulated urine was placed in the center of the cylindrical container for 5 to 6 seconds with a 50 ml syringe. The results are shown in Table 1 below. Comparative examples 1, 2 and 3 are examples in which a hydrophilic agent is not used in the process of producing animal excrement disposal materials according to Examples 1, 2 and 3, respectively.
And In the table, the surfactant A is sodium dodecylbenzenesulfonate as a surfactant, and the surfactant B is. The surfactant is octyl phenyl ether, and the surfactant C is the surfactant lauryl trimethyl ammonium chloride.

[0026]

INDUSTRIAL APPLICABILITY The present invention provides a granular animal excrement disposal material which is a material such as a plastic material having water repellency or a property which is hard to be wet with water, or a waste material thereof, or a plastic which has water repellency or a property which is hard to wet with water. A paper waste material having a thin film or the like is formed into a granule by mixing a paper waste material powder having a particle size of 3 mm or less, and the surface active agent solution is applied to the surface of the formed granule material. The absorption rate of the liquid such as urine is higher than that of the material, and the liquid can be absorbed in a relatively short time. After use, it can be incinerated as general waste.

In the present invention, a water-repellent paper waste material that has not been used as a raw material for conventional animal excrement disposal materials is used as a raw material for animal excrement disposal materials by utilizing its water retention property.
In addition to compensating for the shortage of raw materials for animal excrement disposal materials, the plastic material in the waste materials is used to solve the problems related to the flame retardancy of wet animal excrement disposal materials at once.
This is significant in terms of effective use of resources, reduction of costs for the disposal of waste paper, and reduction of processing of environmental waste.

[Brief description of drawings]

FIG. 1 is a schematic flow process chart showing a process for producing an animal excrement disposal material according to an embodiment of the present invention.

[Explanation of symbols]

1 Granular animal excrement disposal materials manufacturing equipment 2, 5, 7 belt conveyor 3 crusher 4 Crusher outlet 5 quantitative belt conveyor 6 Belt conveyor 5 exit 8 crusher 9 Entrance of crusher 10 Crusher outlet 11 Air transfer pipe 12 sedimentation chamber 13 Settling chamber 12 entrance 14 Exit of sedimentation chamber 12 15 screw feeder 16 High-grade aqueous resin supply tank 17 Fixed quantity conveyor 18 Water supply tank 19 Water supply pipe 20 granulator 21 Granulator entrance 22 Granulator exit

[Procedure amendment]

[Submission date] August 29, 1998 (1998.8.2)
9)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction content]

[0007] In the present invention, surfactants are those granulated product pulverized paper waste is applied in order to increase the absorption rate of the water, cationic surfactants, non-ion field surfactant Agents and anionic surfactants can be used.
Examples of the anionic surfactant include dodecylbenzenesulfonic acid and sulfosuccinic acid type anionic surfactant, and examples of the nonionic surfactant include octylphenyl ether and polyoxyethylene derivative.
Examples of the cationic surfactant include lauryl trimethyl ammonium chloride, stearyl trimethyl ammonium chloride, and coconut amine acetate.

[Procedure 3]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a schematic flow process chart showing a process for producing an animal excrement disposal material according to an embodiment of the present invention.

[Explanation of Codes] 1 Granular animal excrement disposal material manufacturing apparatus 2, 5, 7, 23 , 31 , 34 Belt conveyor 3 Crusher 4 Crusher outlet 5 Quantitative belt conveyor 6 Belt conveyor 5 outlet 8 Crusher 9 Crusher inlet 10 Crusher outlet 11 Air transfer pipe 12 Settling chamber 13 Settling chamber 12 inlet 14 Settling chamber 12 outlet 15 Screw feeder 16 High-grade aqueous resin supply tank 17 Quantitative conveyor 18 Water supply Tank 19 water supply pipe 20 granulator 21 granulator inlet 22 granulator outlet 24 coating device 25 coating device 24 inlet 26 hydrophilic agent dilution tank 27 hydrophilic agent spraying device spray nozzle 28 coating device 24 Outlet pipe 29 Vibrating type sieving machine 30 Outlet part 32 of the oscillating type sieving machine 29 Outlet part of the belt conveyor 31 Product tank 35 Automatic packaging device

Claims (5)

[Claims] 1. Granules formed into granules containing a waste paper powder having a particle size of 3 mm or less and a powdery water-absorbing resin in an amount smaller than that of the waste paper, and a surfactant on the surface of the granules. A granular animal excrement disposal material characterized by being adhered. 2. A paper waste material powder having a particle size of 3 mm or less, and a water absorbent resin in an amount smaller than that of the paper waste material, and a plastic waste material powder having a particle size of 3 mm or less in an amount less than the paper waste material powder and formed into a granular shape. A granular animal excrement disposal material, characterized in that the particles are present and a surface active agent is attached to the surface of the particles. 3. The paper waste material powder is a pulverized product of paper waste material having a surface which is difficult to wet with water.
The granular animal excrement disposal material described in. 4. A paper waste material is a crushed waste material of a diaper, a crushed waste material at the time of manufacturing a diaper, a crushed printed paper, a crushed paper whose surface is covered with a paraffin film or a plastic material film. The granular animal excrement disposal material according to any one of claims 1 to 3, which is a product. 5. The granular animal excrement disposal material according to claim 1 or 2, wherein the surfactant is a cationic surfactant.