JP6302617B2 - Excrement treatment material - Google Patents

Description

  The present invention relates to a granular excrement treating material having non-water absorption performance for the purpose of treating human or animal excrement.

  Recently, many pet supplies have been provided for processing excrement such as pet animals. For example, the inventor of the present invention includes a urine container having a lid and a bottomed hollow box shape, and a plurality of treatment body containers, and a plurality of urine outlets are formed in the lid part. We are developing an animal toilet with multiple urinary tracts that communicate with each urination port. On the upper surface of the lid portion of this animal toilet, a granular processing body containing a non-water-absorbing adsorbent material and molded into a granular shape is laid (Patent Document 1).

  On the other hand, as an example of an excrement treatment material that can be used for the animal toilet, granular excretion that retains water-repellent performance by granulating powdery zeolite more firmly than usual and spraying a water-repellent agent There is a material treatment material (Patent Document 2).

JP 2011-244722 A JP 2008-141956 A

  However, the above-mentioned conventional excrement disposal material is premised on water absorption, as can be seen from the fact that it is composed of a water-repellent portion having a surface area of 30% to 70% and other water-absorbing portions. Because the water-repellent agent is merely sprayed onto the granular zeolite, the water-repellent effect is poor, the upper and side surfaces have openings, and the lower part of the animal toilet (hereinafter referred to as “open-type flow-down”) When it is used for a "type toilet"), it has a problem that malodor may be generated from the urine of a pet animal that has absorbed water. Further, since zeolite is used, there is a problem that the manufacturing cost becomes expensive.

  The present invention has been made to solve the above-described problems, and can effectively prevent malodors. It is an inexpensive non-water-absorbing material that can be suitably used mainly for an open-type downflow toilet. An object is to provide a waste disposal material.

  In order to solve the above problems, the first excrement disposal material of the present invention is at least one of paper, fibers, woods, plants, plastics, rubbers, organic sludge and animal waste materials. A core material comprising a core material composed of the above-described material, and a synthetic resin adhesive, and a covering layer portion covering the granular core portion, the covering layer portion having an HLB value ( A water repellent layer portion containing a surfactant having a Hydrophile Lipophile Balance value) of 6 or less (more preferably 3 or less), and an antibacterial layer portion containing a bactericidal surfactant having a cationic functional group (cation charge) It is characterized by providing.

Since the present invention includes a core material and a synthetic resin adhesive as constituent materials, and has a granular core portion that is tightly bound with a small amount of voids, the granular core portion itself absorbs water. Has the ability to prevent And since the granular core is covered with a water-repellent layer containing a surfactant having an HLB value of 6 as small as below and having excellent water-repellent performance, non-water-absorbing performance (water-permeable performance) is more effectively exhibited. Can be made.
Moreover, since the antibacterial layer part containing the bactericidal surfactant having a cationic functional group is provided, it is possible to prevent the propagation of miscellaneous bacteria that cause malodor.
Therefore, when the present invention is used in an open-type downflow toilet, urination does not remain inside the excrement disposal material because it can flow down along the surface without absorbing urine. A bad odor can be effectively prevented.

In the first excrement disposal material of the present invention, the water-repellent layer portion is configured as an inner covering layer portion that covers the granular core portion, and the antibacterial layer portion is further covered with the water-repellent layer portion. Even when configured as an outer coating layer, a predetermined effect is obtained.
However, the antibacterial layer part is configured as an inner (granular core part side) coating layer part covering the granular core part, and the water-repellent layer part is configured as an outer coating layer further covering the antibacterial layer part. In some cases, the water-repellent performance of the outer coating layer is increased to increase the non-water-absorbing performance, while the inner coating layer maintains the sterilizing performance, so that a small amount of moisture can permeate the water-repellent layer portion for some reason. Even in such a case, it is more preferable because it is possible to prevent the propagation of germs that cause malodors.

  The second excrement disposal material of the present invention is composed of at least one material selected from papers, fibers, woods, plants, plastics, rubbers, organic sludge and animal waste. In a granular excrement disposal material including a core material and a synthetic resin adhesive, a surfactant having an HLB value of 6 or less is included in a region having a predetermined thickness from the surface layer of the excrement disposal material. The antibacterial layer formed by including a bactericidal surfactant having a cationic functional group in a region having a predetermined thickness from the surface layer of the excrement disposal material. And a section.

  According to the second excrement disposal material of the present invention, each surfactant is not coated on the granular core portion, but is contained in a region having a predetermined thickness near the surface layer of the granular core portion, thereby providing a water repellent layer. By forming the part and the antibacterial layer part, the same effect as the first excrement disposal material of the present invention can be obtained.

  In the second excrement disposal material of the present invention, if the antibacterial layer portion is provided inside the water-repellent layer portion, the same as in the case of the first excrement disposal material. This is preferable for the reason.

  In addition, as the surfactant for forming the coating layer portion, there is a substance having an sterilizing performance having an HLB value of 6 or less and having a cationic functional group. In that case, it is formally a single-layer covering layer portion, but is within the scope of the right because it exhibits the effects of the present invention.

  According to the present invention, it is possible to provide an inexpensive non-water-absorbing excrement disposal material that can effectively prevent malodor and can be suitably used mainly for an open type animal toilet.

It is sectional drawing of the excrement disposal material (1st Embodiment) of this invention. It is sectional drawing of the excrement disposal material (2nd Embodiment) of this invention.

  About one form (henceforth "embodiment") for implementing this invention, the excrement processing material for processing the excrement for pets, such as a cat and a dog (henceforth "this excrement processing material"). Will be described in detail with reference to the drawings.

[Excrement treatment material]
(Granular core 10)
As shown in FIG. 1, an example of the embodiment of the excrement disposal material 1 is a composite core formed of a granular core portion 10 and a covering layer portion 15 having a predetermined thickness that covers the surface layer of the granular core portion 10. It has a layer structure.

The granular core part 10 uses a core part material and a synthetic resin adhesive as main constituent materials.
The granular core portion 10 only needs to be formed in the shape of a small lump, and does not need to be a perfect sphere or the like, and the shape thereof may be any shape such as a columnar body (elongated shape) or a flat shape.

(1) Core material The core material is made of at least one of paper, fibers, woods, plants, plastics, rubbers, organic sludge materials and animal waste materials. it can.

  The paper is not particularly limited as long as it is made of pulp, and various waste materials as well as virgin pulp can be used. For example, waste paper waste, sanitary paper waste, toilet paper waste, tissue paper waste, toilet paper waste, dust paper waste, paper cotton waste, paper towel waste, toilet seat waste, newspaper waste, magazine waste, buff powder (mainly in printing companies, Fine paper powder generated during bookbinding cutting and scraping), mechanical pulp waste, chemical pulp waste, titanium paper waste, semi-chemical pulp waste, cotton pulp waste, wood pulp waste, waste paper pulp pulverized product, fluff pulp, Water-absorbing fiber waste, non-woven fabric waste, paper dust generated during non-woven fabric manufacture, paper dust generated during the paper making process or paper dust generated during sanitary material manufacture, waste laminate paper, laminate paper printing waste, laminate paper scrap, cardboard Waste, waste paper (trimming loss, non-woven fabric, etc. generated from sanitary materials manufacturers, etc.) Soshi, paperboard, may be used used ticket, the punch chip and the like.

  The above-mentioned fibers are yarn-like substances used as raw materials for fabrics, etc., and waste fibers (cotton waste, wool waste, hemp waste, waste waste, etc.), regardless of the type of natural fiber and chemical fiber, etc. , Cloth waste, cotton waste, waste eyebrows, rayon waste, nylon waste, polyester waste, rope waste), etc. can be used.

  There is no question about the type of wood. Various types of waste wood (waste wood for structures, waste wood related to the wood product manufacturing industry, wooden furniture, wooden pallets, sawdust, sawdust, barks, packaging waste, Waste chips, felled timber, roots, pruned branches, wood flour, etc.) can be used.

  Plants are not limited to any kind, and plant residues and the like can be used as well as sasa, bamboo, fallen leaves, cut grass and the like. Here, the vegetable residue means solid waste of plants used as raw materials in the food manufacturing industry, pharmaceutical manufacturing industry, fragrance manufacturing industry or restaurants, etc. Rice cake, beer cake, rice cake, seaweed cake, starch cake, tofu cake, okara, rice cake, tea husk, roasted coffee bean extraction residue, rice / flour, soybean cake, fruit peel / seed, vegetable waste, medicinal herb It is possible to use dregs, oil dregs, etc.

  Plastics are also solid materials of synthetic polymer compounds (for example, polypropylene, vinyl chloride, polychlorinated biphenyls, polystyrene, polyacetal, polycarbonate, polyethylene, polyamide, polyethylene terephthalate, vinylidene chloride, acrylic resin, polyurethane (urethane foam), etc.) , Biodegradable plastics, etc.), any type can be used, and various waste materials can be used. Waste plastics, waste polyurethane, waste polystyrene (including foamed polystyrene), waste agricultural film, wallpaper waste (including waste residue classification of wallpaper waste), scraps of various synthetic resin packaging materials, waste photo film, waste plastic containers For example, it is possible to use coating waste, lining waste, waste polymer, paint residue, adhesive residue, waste baked land (print base, etc.).

  In addition, waste materials from other excrement disposal materials, disposable diaper waste materials, sanitary napkin waste materials, milk pad waste materials, sweat pad waste materials, incontinence pad waste materials, animal sheet waste materials, bed sheet waste materials, mask waste materials, eye mask waste materials, seats Head cover scraps, pillow cover scraps, etc. can be used (both including plastic-rich separated products of each scrap).

  As long as the rubber is a polymer material having excellent stretchability, natural rubber, synthetic rubber and the like are not limited, and various waste materials can be used. For example, waste tires, synthetic rubber scraps, etc. can be used.

  The organic sludge is a muddy substance remaining after the treatment of factory waste water or the like and a muddy substance generated in the manufacturing process of various manufacturing industries, and all organic and inorganic substances can be used. For example, papermaking sludge, pulp sludge, sewage sludge, digested sludge (excess sludge), paste and the like can be used.

  Animal waste refers to animal unnecessarys used as raw materials in the food manufacturing industry, pharmaceutical manufacturing industry, leather manufacturing industry, restaurants, etc., and the kind of leather, bones, etc. is not limited.

  Although the said core part material may use one type, it is also possible to combine two or more types of various materials from which a property differs.

(2) Synthetic Resin Adhesive The synthetic resin adhesive is a material for firmly binding the core material so as not to form a gap as much as possible and maintaining the shape of the finished product. As this synthetic resin adhesive, a water-soluble synthetic resin adhesive such as polyvinyl alcohol (PVA) can be used. However, in order to exhibit non-water absorption performance, a water-insoluble synthetic resin adhesive is used. It is preferable that As this water-insoluble synthetic resin-based adhesive, for example, a known substance such as a hot-melt adhesive or an emulsion-based adhesive can be used.

  The mixing ratio of the core material and the synthetic resin adhesive is preferably 97 parts by weight to 80 parts by weight of the core material and 3 parts by weight to 20 parts by weight of the synthetic resin adhesive.

  In addition, when the inorganic core solidifying material such as gypsum and bentonite is blended in the granular core portion 10, each constituent material can be firmly fixed and the voids can be reduced, so that the water permeability is improved. This is very suitable. When the inorganic solidifying material is blended in the granular core, it is preferable that the blending ratio is 1 to 10 parts by weight with respect to 100 parts by weight of the core material.

  Moreover, as a material which comprises the granular core part 10, substances, such as a deodorizing material, a deodorizing material, a substance which has bactericidal action, and a coloring substance (oil-based colorant etc.), can also be mix | blended.

(Coating layer portion 15)
The covering layer portion 15 is provided to retain water repellency and retain sterilization action. In the present embodiment, the antibacterial layer portion 16 provided on the inner side and the antibacterial layer portion 16 are further provided. The case of a two-layer structure composed of the water repellent layer 17 to be covered will be described.

  In the present embodiment, the antibacterial layer portion 16 that directly covers the granular core portion 10 has a bactericidal surfactant (cationic surfactant, relatively cationic) having a cationic functional group having an excellent bactericidal effect. For example, amphoteric surfactants having superior properties. Further, the water repellent layer portion 17 is formed from a surfactant having an HLB value of 6 or less that is excellent in water repellency.

  Examples of the bactericidal surfactant having a cationic functional group constituting the antibacterial layer portion 16 include known substances such as quaternary ammonium salts having a short alkyl chain length, benzalkonium salts, benzethonium chloride, and pyridinium salts. Any one kind or a mixture of plural kinds can be used.

  Needless to say, the surfactant constituting the water repellent layer portion 17 is preferably a substance excellent in water repellency. As a result of extensive experiments, the inventor has only partly dispersed in water. The inventors have found that it is preferable to use a surfactant having an HLB value of 6 or less (preferably, 3 or less that hardly disperses in water) with a value of 6 as a reference.

  As surfactants having such properties, fluorosurfactants (for example, those containing perfluoroalkyl sulfonic acid, perfluoroalkyl carboxylic acid and the like as main components), silicon surfactants, and cationic surfactants. Any one of known substances such as a quaternary ammonium salt having a long alkyl chain length or 2-ethylhexanoic acid triglyceride, or a mixture of plural kinds thereof can be used.

  In addition, this coating layer part 15 needs to be formed in the layer thickness which can coat | cover the granular core part 10 uniformly.

[Production method]
Then, the manufacturing method (henceforth "this manufacturing method") of this excrement disposal material 1 is demonstrated.
This manufacturing method is mainly composed of a molding process, a covering process, a sizing process, a fragrance adding process, and a bagging process.

(1) Forming process This process is a process of forming a granular core part.
In this process, the core material composed of papers, fibers, woods, plants, plastics, rubbers, organic sludge or animal waste is pulverized to a predetermined size with a crusher The core material thus prepared and a material such as a synthetic resin adhesive are put into a mixer so as to have a predetermined ratio and mixed. Then, if necessary, a desired amount of water is added, and the core material is formed by extrusion granulation using a granulator or other molding methods.

  In general, when extrusion molding or the like is performed, the pressure increases to 50 ° C. or higher (preferably 60 ° C. or higher). Therefore, when a synthetic polymer compound material such as wallpaper waste material (vinyl chloride wallpaper waste material etc.) is used as the core material, the synthetic resin material is thermally deformed under the temperature condition and solidifies after molding. It is preferable because it can be firmly bound and can prevent collapse of the finished product.

(2) Covering step This step is a step of forming the covering layer portion 15 by covering the periphery of the granular core portion 10 with the covering material. In this step, a coating material or the like is sprayed or sprayed around the granular core portion 10 (hereinafter referred to as “spreading or the like”) to form the coating layer portion 15 using a coating apparatus or the like. In this step, the coating layer portion 15 can be formed by, for example, spraying the coating material constituting each layer in order from the inner coating layer.

(3) Sizing process This process is a process of sizing so that the size of the excrement disposal material becomes a predetermined standard. In this step, the non-standard product is separated by passing the excrement disposal material produced in the previous step through a sieve having a predetermined size mesh, and only the predetermined standard product is extracted. become.

(4) Fragrance addition process This process is a process which fills a fragrance | flavor with air etc. in the packaging bag for enclosing the excrement disposal material.

(5) Bag filling process This process is a process of packing the manufactured excrement disposal material into a packaging bag filled with a fragrance. In this step, after a predetermined amount of the excrement disposal material is packed in the packaging bag containing the fragrance, the excrement disposal material is sealed in the packaging bag by performing an operation of sealing the opening of the packaging bag. The fragrance will adhere to the surface of the surface.

  In some cases, a drying process for drying the excrement disposal material with a dryer may be provided between the coating process and the fragrance addition process.

[Function and effect]
The excrement disposal material 1 includes a core material and a synthetic resin adhesive as constituent materials, and has a granular core portion 10 that is firmly bound in a state where there are few voids. 10 itself has the ability to prevent water absorption. And since the granular core part 10 is coat | covered with the water-repellent layer part 17 containing the surfactant which has HLB value as small as 6 or less and outstanding water-repellent performance, non-water-absorbing performance is exhibited more effectively. be able to.
In addition, since the antibacterial layer part 16 containing a bactericidal surfactant having a cationic functional group is provided, even if a small amount of moisture permeates the water repellent layer part 17 for some reason, it has a bad odor. It will be possible to prevent the propagation of causative bacteria.
Therefore, when this excrement disposal material 1 is used in an open-type falling-down toilet, it is possible to flow down along the surface layer without absorbing urine. Therefore, since urine does not remain inside the excrement disposal material, malodor can be effectively prevented.

As mentioned above, although an example about a suitable embodiment was explained about the present invention, the present invention is not restricted to the embodiment concerned, and a design change is possible suitably in the range which does not deviate from the meaning of the present invention.
For example, in the present excrement disposal material 1, the coating layer portion 15 is formed around the granular core portion 10, but the water-repellent layer portion is directly formed at a predetermined depth in the inner portion near the surface layer of the granular core portion 20. The excrement disposal material 2 may be formed by providing 20a and the antibacterial layer part 20b (FIG. 2). In this case, in a region having a predetermined thickness from the surface layer of the granular core part 20, a surfactant having an HLB value of 6 or less is included by infiltration or kneading to form the water repellent layer part 20a. In the inner region of the water repellent layer portion 20a (region having a predetermined thickness from the surface layer of the granular core portion 20), a bactericidal surfactant having a cationic functional group is contained by infiltration or kneading or the like to be antibacterial. The layer part 20b can be formed.

  The excrement disposal material is particularly suitable for use in an open animal toilet, but can naturally be used for other purposes.

  In order to investigate the properties of the excrement disposal material, the following samples were prepared and subjected to a water absorption test and an antibacterial activity test.

[Water absorption test]
(1) Test content In order to investigate the water absorption performance of each sample, the following water absorption test was conducted.
A sample is filled into a container that is a hemisphere having a diameter of 100 mm and a depth of 50 mm and has a mesh body having a mesh opening size of 2 mm on the bottom surface until the height reaches 20 mm from the bottom. And it pulls up after making it infiltrate for 3 second in 25 degreeC +/- 3 degreeC water. Thereafter, the weight of the sample was measured a total of 3 times under the conditions shown in Table 1, and the water absorption was calculated according to the following formula.
Water absorption rate (%) = (sample weight after infiltration−sample weight before infiltration)
/ Sample weight before infiltration × 100

(2) Sample Each sample of the present excrement treatment material used in the following test is an excrement treatment material formed from a granular core part and a covering layer part.

<A> Each sample of this excrement disposal material Each sample 1 and 2 made the granular core part the mixture of 97 weight% of vinyl chloride containing wallpaper waste materials and 3 weight% of polyvinyl alcohol.
Each sample 1 and 2 formed the coating layer part of the 2 layer structure provided with an inner side coating layer part and an outer side coating layer part.

Sample 1 uses a cationic surfactant with high bactericidal performance for the inner coating layer (Lion Corporation Arcard 210-80E dialkylammonium chloride), and a cationic surfactant with high water repellency for the outer coating layer. (Lion Corporation ESO Card 0 / 12E EO addition type ammonium chloride) is used.
On the other hand, in sample 2, a cationic surfactant having a high water repellency performance (Esocard 0 / 12E EO addition type ammonium chloride manufactured by Lion Corporation) is used for the inner coating layer portion, and a cation having a high bactericidal performance is provided for the outer coating layer portion. A surfactant (Lion Corporation, Arcard 210-80E dialkylammonium chloride) is used.

<B> Sample of comparison target product Comparison target sample 3 is a product (competitor's product) that is a single-layer structure covering a granular core formed from a mixture of waste paper pulp and silica gel with a water repellent. .

(3) Test results Table 2 shows the results of the water absorption test. Although the water absorption rate is an index indicating that the water permeability is higher, the samples 1 and 2 using the cationic surfactant in the coating layer portion show better water permeability than the sample 3 for comparison. It was confirmed.
Among them, in particular, Sample 1 uses a cationic surfactant having high bactericidal performance for the inner coating layer portion, and Sample 1 using a cationic surfactant having high water repellency performance for the outer coating layer portion. Compared with 2, it was confirmed that the water permeation performance was good.

[Antimicrobial test]
In order to measure the number of Staphylococcus aureus causing odor due to urination, the following antibacterial activity test was performed.
This antibacterial activity test was carried out by inoculating each sample with 4.0 × 10 ¹² S. aureus per gram of the sample and counting the number of S. aureus 24 hours and 48 hours later.
Moreover, the same test was implemented 3 times and the average value was employ | adopted for the antibacterial activity test.

Each sample 1 and 2 of this excrement disposal material used the same sample as that used in the antibacterial activity test.
On the other hand, the comparative sample 4 was absorbent cotton in which a 2 wt% urea solution was added to a 10 wt% NB medium.

Table 3 shows the results of the antibacterial activity test (the number of Staphylococcus aureus per gram of each sample). The smaller the number of Staphylococcus aureus is, the less odor-causing substance is, but it is an indicator that the samples 1 and 2 using the cationic surfactant in the coating layer are better than the sample 4 for comparison. The antibacterial performance was confirmed.
In addition, as in the case of the water absorption test, it was confirmed that Sample 1 showed better antibacterial performance than Sample 2.

  From the above, it was confirmed that this excrement disposal material has excellent water permeability and exhibits an excellent effect in suppressing the number of Staphylococcus aureus causing malodor.

1, 2 Excrement treatment material 10, 20 Granular core part 15 Covering layer part 16, 20b Antibacterial layer part 17, 20a Water repellent layer part

Claims (3)

Includes a core material composed of at least one of paper, fibers, woods, plants, plastics, rubbers, organic sludge and animal waste, and a synthetic resin adhesive A granular core;
A covering layer portion covering the granular core portion,
The covering layer portion is
A water repellent layer portion containing a surfactant having an HLB value of 6 or less,
An excrement disposal material comprising a two-layer structure comprising an antibacterial surfactant having a cationic functional group and an antibacterial layer formed inside the water-repellent layer . The excrement disposal material according to claim 1 , wherein the covering layer portion covers the whole of the granular core portion. Includes a core material composed of at least one of paper, fibers, woods, plants, plastics, rubbers, organic sludge and animal waste, and a synthetic resin adhesive In granular excrement disposal materials,
The excrement disposal material is a region having a predetermined thickness from the surface layer of the excrement disposal material,
A water repellent layer formed by containing a surfactant having an HLB value of 6 or less,
Excrement characterized by having a two-layer structure composed of an antibacterial layer part formed inside the water repellent layer part by containing a bactericidal surfactant having a cationic functional group Treatment material.

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