Pet toilet and manufacturing method thereof

Abstract

To provide a toilet for various pets that prevents unpleasant odors from occurring from excreted fluids and excreta, maintains a good rearing environment, and has reduced running costs.SOLUTION: A toilet for pets is at least partially formed of a synthetic resin that contains a fibrous component prepared by heating the woody component and / or leaves of a tree with microwaves under reduced pressure and removing at least some of essential oil or moisture therefrom.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a pet toilet and a method for manufacturing the same. [Background technology]

[0002] Conventionally, known pet toilets for treating excrement from pets such as cats and dogs include those that have a structure in which an excrement treatment material that forms a toilet bed, such as cat litter or litter, is contained in the lower part of the toilet body (single-layer type); those that divide the toilet body into upper and lower parts by a urine-permeable partition layer such as a lattice, with the upper part containing the excrement treatment material and the lower part containing, as necessary, a urine absorbent such as a urine absorbing mat made of, for example, absorbent resin, vegetable fiber, pulp, etc. (two-layer type); and those that divide the toilet body into upper and lower parts by a urine-permeable partition layer such as a lattice, with the upper part containing the excrement treatment material and the lower part containing a urine absorbent such as the urine absorbing mat (system type).

[0003] Among these pet toilets, the system type is convenient because the waste treatment material contained in the upper layer allows the urine excreted by pets to pass through quickly and then drop to the lower layer through the liquid passage holes in the drainboard, where the urine that has fallen is actively absorbed by the urine absorbent contained in the tray in the lower layer.

[0004] In the above-mentioned system-type pet toilet, the smell of excrement in the tray placed below the grate may volatilize to the outside through the grate, which may cause a bad smell. If cat litter or the like is laid on the top of the grate, the smell can be blocked, but since cats have the habit of stirring up the excrement treatment material with their feet after excretion, stirring up the excrement treatment material after excretion may scoop out the excrement treatment material and expose the grate, which may cause excrement to volatilize to the outside.

[0005] Patent Document 2 describes a pet excrement absorption sheet in which a liquid medicine containing at least one of a fragrance component (e.g., alcohols such as geraniol), a deodorizing component (e.g., catechin), and a bactericidal component (e.g., benzalkonium salt) is applied to the top sheet. Patent Document 3 discloses a pet excrement treatment material whose main component is a pulverized plant-derived material, and which contains 70 to 98.99% by mass of the pulverized plant-derived material, 1 to 20% by mass of synthetic resin, and 0.01 to 5% by mass of tectosilicate. However, since absorption sheets and excrement treatment materials are usually disposable and replaced with new ones at regular intervals, those containing expensive deodorizing agents have problems in terms of running costs. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2013-17446 A [Patent Document 2] JP 2006-238745 A [Patent Document 3] JP 2006-345830 A Summary of the Invention [Problem to be solved by the invention]

[0007] Therefore, the object of the present invention is to provide a pet toilet for various pets that is less likely to produce unpleasant odors caused by excrement or waste, maintains a good breeding environment, and has reduced running costs. [Means for solving the problem]

[0008] As a result of intensive research into solving the above problems, the inventors discovered that the above problems could be solved by molding at least a portion of the pet toilet from a synthetic resin containing a specific fibrous component, and thus completed the present invention.

[0009] In other words, the present invention is a pet toilet characterized in that at least a portion of the pet toilet is molded from a synthetic resin containing a fibrous component obtained by heating the wood and / or leaves of a tree with microwaves under reduced pressure to remove at least a portion of the essential oils and moisture.

[0010] The present invention also relates to a method for manufacturing a pet toilet, which comprises supplying a synthetic resin composition containing a synthetic resin and a fibrous component obtained by removing at least a portion of the essential oil and moisture from a wood raw material containing Japanese larch to a kneading device, heating and melting and kneading the synthetic resin composition, and then supplying the composition to a mold to manufacture the pet toilet. Effect of the Invention

[0011] The pet toilet of the present invention has an excellent deodorizing effect against odors originating from excrement and waste, and the effect lasts for a long time. Furthermore, the pet toilet of the present invention has a fragrance originating from fibrous components, and the fragrance lasts for a long time. Therefore, the pet toilet of the present invention stably maintains excellent deodorizing and aromatic effects for a long period of time. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a perspective view of a pet toilet (single-layer type) of the present invention. [Diagram 2] FIG. 2 is an exploded perspective view of a pet toilet (two-layer type) according to another embodiment of the present invention. [Diagram 3] FIG. 3 is an exploded perspective view of a pet toilet (system type) according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] The pet toilet of the present invention is not particularly limited as long as it is a toilet for treating pet excrement and waste, but examples thereof include a container (single layer type) structured to accommodate an excrement treatment material forming a toilet bed such as cat litter or litter, a container (two layer type) structured to divide the toilet body into upper and lower parts by a urine-permeable partition layer such as a lattice, and accommodate the excrement treatment material in the upper part and a urine absorbent such as a urine absorption mat made of water-absorbent resin, vegetable fiber, pulp, etc. in the lower part as necessary, and a container (system type) in which the toilet body is divided into upper and lower parts by a urine-permeable partition layer such as a lattice, and accommodates the excrement treatment material in the upper part and the urine absorbent such as the urine absorption mat in the tray of the lower part. The single layer type, two layer type, and system type may be provided with a door as an entrance and exit for pets, a hood covering the entire or part of the upper part of the toilet, a handle for moving the toilet, etc., as necessary. As the pet toilet of the present invention, the system type is preferable in terms of deodorizing effect and cost.

[0014] In the pet toilet of the present invention, at least a part of the pet toilet is molded with a synthetic resin containing a fibrous component obtained by heating the wood and / or leaves of a tree with microwaves under reduced pressure to remove at least a part of the essential oils and moisture. Here, "at least a part" means that all or some of the parts constituting the pet toilet are molded with the synthetic resin, or some of the parts are molded with the synthetic resin. When the pet toilet is a single-layer type, it is preferable to mold the entire container that contains the excrement treatment material or at least the container wall surface with the synthetic resin. When the pet toilet is a two-layer type, it is preferable to mold at least the lower layer container and urine-permeable partition layers such as lattice with the synthetic resin, and it is more preferable to mold at least the urine-permeable partition layers such as lattice with the synthetic resin. In the case of the system type, it is preferable to mold at least the urine-permeable partition layer such as the lattice, the tray, the lower portion container, and the hood from the above-mentioned synthetic resin, it is more preferable to mold at least the urine-permeable partition layer such as the lattice, and the tray from the above-mentioned synthetic resin, and it is particularly preferable to mold at least the urine-permeable partition layer such as the lattice from the above-mentioned synthetic resin.

[0015] The synthetic resin used in the present invention may be either a thermoplastic resin or a thermosetting resin, but a thermoplastic resin is preferred because it can more effectively transfer at least a part of the essential oil contained in the fibrous component to the synthetic resin side to improve the deodorizing effect of the fibrous component. The thermoplastic resin is not particularly limited, and examples thereof include polyolefin resins, polystyrene, polyacrylate, polymethacrylate, polyacrylonitrile, polyester, polyamide, polyurethane, polyethersulfone, polyetherketone, polyimide, polydimethylsiloxane, polycarbonate, and polyphenylsulfide, and polyolefin resins are preferred. The thermoplastic resins may be used alone or in combination of two or more.

[0016] Examples of polyolefin resins include polyethylene resins and polypropylene resins.

[0017] The polyethylene resin is not particularly limited, and examples thereof include low-density polyethylene, medium-density polyethylene, high-density polyethylene, linear low-density polyethylene, and ultra-high molecular weight polyethylene. The polyethylene resin may be used alone or in combination of two or more kinds. Copolymers having polyethylene as a partial structure, such as ethylene-vinyl acetate copolymers, which are copolymers of vinyl acetate and polyethylene, may also be used in the same manner as the above polyethylene.

[0018] The polypropylene resin is not particularly limited, and examples thereof include homopolypropylene and copolymers of propylene and other olefins. The polypropylene resin may be used alone or in combination of two or more kinds. The copolymer of propylene and other olefins may be any of block copolymers, random copolymers, and random block copolymers.

[0019] Examples of the olefin to be copolymerized with propylene include α-olefins such as ethylene, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-hexene, 1-octene, 1-nonene, and 1-decene.

[0020] The synthetic resin contains a fibrous component obtained by removing at least a part of essential oil and water from a tree raw material. The tree used to obtain the fibrous component is not particularly limited, but examples thereof include genus Chamaecyparis obtusifolia (Cupressaceae), genus Thuja genus (Cupressaceae), genus Juniperus genus (Cupressaceae), genus Cedar genus (Cupressaceae), genus Abies genus (Pinaceae), genus Cedrus genus (Pinaceae), genus Picea genus (Pinaceae), genus Larch genus (Pinaceae), genus Tsuga genus (Pinaceae), genus Eucalyptus genus (Myrtaceae), genus Sciadopitys genus (Sciadopitys genus (Cupressaceae), genus Kaya genus (Taxaceae), and genus Thuja genus (Cupressaceae).

[0021] Examples of trees in the Cupressaceae family include Japanese cypress, Taiwan cypress, Japanese cypress, Lawson cypress, banyan cypress, sawara, peacock cypress, golden banyan cypress, Suiryu cypress, Scutellaria sieboldii, Golden cypress, Japanese cedar, Japanese cedar, Japanese cedar, and Himurosugi. Examples of trees in the Cupressaceae family include Arborescens and Japanese cedar. Examples of trees in the C. cernua genus include Japanese laurel, Japanese mouse-leaf juniper, Japanese emperor juniper, Okinawan juniper, etc. Examples of trees in the C. cernua genus of the Cupressaceae family include Japanese cedar, Japanese cedar, Japanese enkousugi, Japanese cedar, Japanese silverleaf cedar, Japanese red cedar, and Japanese midorisugi, etc.

[0022] Examples of trees belonging to the genus Abies of the family Pinaceae include Abies sachalinensis, Fir, Abies salicina, Abies mariesii, Abies veitchii, Abies veitchii, Balsam fir, Abies mitsunense, White fir, Amabilis fir, Abies sachalinensis, California red fir, Grand fir, Noble fir, etc. Examples of trees belonging to the genus Picea of ​​the family Pinaceae include Picea glehnii and Picea abies. Examples of trees belonging to the genus Pinus of the family Pinaceae include Picea densiflora, Pinus grandiflora, Pinus strobus, Pumila umbellata, etc. Examples of trees belonging to the genus Larch of the family Pinaceae include Larch, etc. Examples of trees belonging to the genus Tsuga of the family Pinaceae include Tsuga umbellata, etc.

[0023] Examples of trees of the genus Eucalyptus in the family Myrtaceae include eucalyptus, silverleaf eucalyptus, camaldolensis, lemon eucalyptus, and the like.

[0024] Examples of trees of the Sciadopitys genus of the Sciadopitys family include Sciadopitys umbellata and the like.

[0025] Examples of trees of the genus Torreya in the family Taxaceae include Torreya.

[0026] Examples of trees in the genus Thujopsis of the Cupressaceae family include Japanese hiba (Thujopsis dolabrata), Thujopsis dolabrata, Hinoki-asunaro (Cypress) and Narrow-leaved-asunaro (Asunaro).

[0027] Among the above-mentioned trees, the genus Chamaecyparis obtusifolia, the genus Cryptomeria japonica, the genus Abies japonica, the genus Pinaceae, the genus Eucalyptus, the genus Sciadopitys umbellata, and the genus Thujopsis umbellata are preferred, and since they are widely distributed in Japan and are easily available, the cypress of the genus Chamaecyparis obtusifolia, the Taiwanese cypress, the Japanese cedar, the Japanese cedar of the genus Cryptomeria japonica, the fir of the genus Abies umbellata, the eucalyptus of the genus Eucalyptus, the genus Sciadopitys umbellata, and the cypress of the genus Thujopsis umbellata are more preferred. A plurality of species of these trees may be combined.

[0028] The method of heating the wood and / or leaves of the above-mentioned trees, preferably the wood and leaves, with microwaves under reduced pressure to remove at least a portion of the essential oils and water is called the reduced pressure drying method. This reduced pressure drying method utilizes the property of microwaves to directly heat water molecules to remove the water and essential oils originally contained in the material.

[0029] This reduced pressure drying method can be carried out using, for example, a microwave distillation apparatus described in International Publication WO2010 / 098440. In this reduced pressure drying method, the pressure in the distillation tank may be set to 1 to 95 kPa, preferably 5 to 80 kPa, and particularly preferably 10 to 60 kPa. The steam temperature at this time is 40 to 100°C. Among the distillation components produced, the oily components can be used as essential oils for other purposes, such as nitrogen oxide removers and fragrances.

[0030] In the reduced pressure drying method, the wood and / or leaves of the tree are heated by microwaves under reduced pressure to remove at least a portion of the essential oil and water, and then a drying step is preferably carried out to remove water at normal pressure. The drying temperature and drying time are not particularly limited, but may be carried out, for example, at 50 to 80°C for about 1 to 5 hours. The remaining essential oil component is 0.01 to 10% by mass, preferably 0.1 to 5% by mass. The remaining water content is 1% by mass or less.

[0031] The fibrous component thus obtained is solid and exhibits an excellent deodorizing effect. Although there are many unknown reasons why the fibrous component exhibits the deodorizing effect, it is presumed at present that, in view of the structure of wood in which cellulose is fixed by lignin and essential oil, after a part of the essential oil is removed, sites capable of absorbing malodors are generated in the lignin structure or cellulose structure.

[0032] Furthermore, although the moisture has been almost entirely removed from this fibrous component, the essential oil components have not been completely removed; rather, some of the essential oil components contained in the wood and / or leaves of the tree have been removed, with some of the essential oil components remaining in the fibrous component.

[0033] The essential oil remaining in the fiber component is preferably low volatile and / or non-volatile. The lower the volatility, the longer the essential oil's function (e.g., deodorizing function and / or fragrance function) will be exhibited. In addition, the essential oil component preferably contains a component with a relatively large molecular weight. The higher the molecular weight, the less likely it is to volatilize. When essential oil is extracted from wood of a tree, etc., essential oils with smaller molecular weights and / or more easily volatile are preferentially extracted, so that essential oils with lower volatility and / or larger molecular weights tend to remain in the material. The essential oil component remaining in the material preferably contains less monoterpene and more sesquiterpene, diterpene or tetraterpene. If the proportion of terpenes with large molecular weights such as sesquiterpene and diterpene is high, it is possible to exhibit a deodorizing effect and / or fragrance effect for a long period of time, as well as a deodorizing effect against various malodors caused by acidic, alkaline and neutral malodorous substances and a nitrogen oxide removal effect. Examples of the malodorous substances include ammonia, methyl mercaptan, hydrogen sulfide, methyl sulfide, methyl disulfide, trimethylamine, acetaldehyde, propionaldehyde, normal butyraldehyde, isobutyraldehyde, normal valeraldehyde, isovaleraldehyde, isobutanol, ethyl acetate, methyl isobutyl ketone, toluene, styrene, xylene, propionic acid, normal butyric acid, normal valeric acid, isovaleric acid, and 3-mercapto-3-methyl-1-butanol.

[0034] Since the deodorizing properties of the fibrous component are sustained for a long period of time, it is preferable that the fibrous component contains an essential oil with low volatility and / or a non-volatile essential oil. It is preferable that the fibrous component contains an essential oil with a large molecular weight.

[0035] The fibrous component preferably contains essential oils such as monoterpenes and sesquiterpenes, such as α-pinene, β-pinene, camphene, tricyclene, myrcene, β-phellandrene, bornyl acetate, δ-3-carene, terpinolene, and limonene.

[0036] Examples of sesquiterpenes include β-caryophyllene and sabinene.

[0037] It is preferable that the essential oil remaining in the fibrous component contains a small amount of monoterpene and a large amount of sesquiterpene, diterpene and / or tetraterpene. If the proportion of terpenes with large molecular weights such as sesquiterpene and diterpene is large, the fibrous component can maintain excellent deodorizing properties for a long period of time.

[0038] The fibrous component has excellent deodorizing properties and exerts an excellent deodorizing effect on odors generated from pet litter boxes, particularly cat feces and urine. The fibrous component has excellent deodorizing properties against odors derived from at least one selected from the group consisting of ammonia, hydrogen sulfide, methyl mercaptan, acetic acid, toluene, and formaldehyde, and more preferably has excellent deodorizing properties against odors derived from at least one selected from the group consisting of ammonia, hydrogen sulfide, and methyl mercaptan.

[0039] Furthermore, since the fiber component is a natural product obtained from trees, it is not dangerous to pets. Also, since it is not easily volatile, the deodorizing effect can be sustained for a long period of time.

[0040] It is preferable that the fibrous component is further subjected to precision pulverization to have an average particle size of 1 to 500 μm. If the average particle size is 1 μm or less, it may aggregate during molding, making molding difficult, and if it is more than 500 μm, it may clog the nozzle of the injection molding machine and may be difficult to mix uniformly, resulting in a poor deodorizing effect. A more preferable average particle size is 5 to 400 μm. The average particle size and maximum particle size are measured using laser diffraction, a scattering type particle size distribution measuring device, and particle size distribution, and are expressed as a value represented by the median diameter (D50).

[0041] The method of precision grinding is not particularly limited, and any conventionally known precision grinding machine may be used, such as a turbo mill, jet mill, bead mill, blade mill, motor grinder, rotor mill, cutting mill, disk mill, and vibration mill.

[0042] The amount of the fibrous component contained in the synthetic resin is not particularly limited, but is, for example, 0.01 to 20 parts by mass, preferably 0.1 to 10 parts by mass, of the fibrous component per 100 parts by mass of the synthetic resin.

[0043] There is no particular limitation on the method for incorporating a fibrous component into a synthetic resin, but kneading is preferred because it can reduce the amount of plastic raw materials used, reduce the environmental burden, and has a high deodorizing effect that can be maintained for a long period of time.

[0044] When kneading the fibrous component into the synthetic resin, a master batch pellet containing the fibrous component is prepared, and the pellet is mixed with a ribbon blender or the like, and molded using a general-purpose synthetic resin molding method. The synthetic resin and the fibrous component can be effectively mixed, and the fibrous component can be heated in the synthetic resin to smoothly transfer a part of the essential oil and moisture in the fibrous component to the synthetic resin side, thereby promoting the porosity of the fibrous component and improving the deodorizing property, so that a synthetic resin molding method using an extruder is preferable. Examples of such synthetic resin molding methods include extrusion molding, injection molding, inflation molding, and blow molding.

[0045] The synthetic resin may also contain other functional components, such as silica gel, zeolite, activated carbon, clay minerals, photocatalysts (titanium dioxide), fragrances, deodorants, antibacterial agents, etc. When these are added, they may be added according to a conventional method.

[0046] The method for manufacturing the pet toilet of the present invention is not particularly limited as long as it is a method that can form at least a part of the pet toilet with the above-mentioned synthetic resin, but an example of the method is to supply a synthetic resin composition containing a synthetic resin and a fibrous component obtained by removing at least a part of the essential oil and water from a wood material containing Abies sachalinensis to a kneading device, heat the synthetic resin composition to melt and knead it, and then supply it to a mold. Examples of the mold include the entire container, a lower part of the container, a urine-permeable partition layer such as a lattice, a tray, and a part of the container wall surface.

[0047] In the above-mentioned manufacturing process, the fibrous component is heated by the molten synthetic resin. This heating causes at least a part of the essential oil and moisture contained in the fibrous component to migrate to the synthetic resin, and the fibrous component becomes finer and more porous, and the essential oil with excellent deodorizing properties is concentrated in the fibrous component. Therefore, the fibrous component can more effectively exhibit the excellent deodorizing properties caused by the essential oil through the fine pores formed in the fibrous component.

[0048] The pet toilet of the present invention is at least partially formed from a resin containing a fibrous component that has an excellent deodorizing effect over a long period of time, and therefore the pet toilet of the present invention can deodorize the bad odor generated from the excrement and waste discharged into the pet toilet, and can prevent the bad odor from leaking out of the pet toilet body for a long period of time.

[0049] Furthermore, the pet toilet of the present invention is suitable for deodorizing the odors generated from the excrement and waste of pets such as cats and dogs, and is particularly suitable for deodorizing the odors generated from the excrement and waste of cats, which have a unique odor.

[0050] Examples of the pet toilet of the present invention will be described below with reference to the drawings. These pet toilets are typical examples of each type, and the shape of the pet toilet of the present invention is not limited to these.

[0051] <First embodiment: single layer type> Pet toilet of the first embodiment 1 The toilet is shown in Figure 1. 1 is a container with a structure capable of storing excrement treatment material (not shown) such as cat litter or litter that forms a toilet bed at the lower part (bottom surface) of the toilet body. If necessary, the pet toilet body may have a concave wall or holes in the wall to allow pets (small animals) such as cats and dogs to easily enter. The excrement treatment material is not particularly limited, but is preferably one that absorbs excrement and solidifies, in which case the excrement can be easily removed together with the solidified excrement treatment material. Furthermore, the excrement can be easily removed because it remains on the excrement treatment material.

[0052] <Second embodiment: 2-layer type> Pet toilet of the second embodiment 10 FIG. 2 shows the structure of the pet toilet 13. The pet toilet 13 is a container with a structure divided into upper and lower parts by a lattice 11, which is a urine-permeable partition layer that allows the pet's excrement to pass through. The pet toilet 13 may have a concave wall or holes in the wall, if necessary, so that the pet can easily enter. The upper part (above the lattice) contains the excrement treatment material (not shown). The lower part contains the urine absorber 12, if necessary. The excrement treatment material is not particularly limited, but is preferably one that absorbs the excrement and disintegrates, or one that allows the excrement to pass through without absorbing it. In the case of one that absorbs the excrement and disintegrates, the excrement and the disintegrated excrement treatment material pass through the lattice 11 and move to the lower part. In the case of one that allows the excrement to pass through without absorbing it, the excrement passes through the lattice 11 and moves to the lower part. In the case of one that allows the excrement to pass through without absorbing it, the excrement passes through the lattice 11 and moves to the lower part. In the case of one that has a urine absorber 12, it is absorbed by it and can be easily removed. Furthermore, the excrement remains on the excrement treatment material and can be easily removed.

[0053] <Third embodiment: System type> Pet toilet of the third embodiment 20FIG. 3 shows the structure of the pet toilet 23. The pet toilet 23 is a container with a structure divided into upper and lower parts by a lattice 21, which is a urine-permeable partition layer that allows the pet's excrement to pass through. The pet toilet 23 may have a concave wall or holes in the wall, if necessary, so that the pet can easily enter. The excrement treatment material (not shown) is accommodated in the upper part (above the lattice). The lower part has a space for the tray 24 to be placed in. The excrement treatment material is not particularly limited, but is preferably one that absorbs the excrement and disintegrates, or one that does not absorb the excrement but allows the excrement to pass through. In the case of one that absorbs the excrement and disintegrates, the excrement and the disintegrated excrement treatment material pass through the lattice 21 and move to the lower part. In the case of one that does not absorb the excrement but allows the excrement to pass through, the excrement passes through the lattice 11 and moves to the lower part. It is absorbed by the urine absorber 22 on the tray 24 and can be easily removed. The tray 24 contains the urine absorbent 22. Moreover, the excrement remains on the excrement treatment material, so it can be easily removed. EXAMPLES

[0054] Examples of the present invention will be described below, but the present invention is not limited to these examples.

[0055] (Production of fiber components) 90 kg of branches of Abies sachalinensis with leaves attached were crushed using a crushing mill (manufactured by KYB Corporation) to obtain small pieces of wood raw material with dimensions of about 10 to 20 mm. The wood raw material was fed into the distillation tank of a microwave distillation apparatus.

[0056] Next, the pressure in the distillation tank was kept at a reduced pressure of about 15 kPa, and the wood raw material was irradiated with microwaves for one hour. The generated steam (essential oil and water) was removed from the distillation tank by sucking with a vacuum pump, and a treated product of Abies sachalinensis was obtained. The amount of the treated product obtained was 68 kg.

[0057] The resulting treated fir was pulverized using a jet mill with high-speed airflow to obtain a fibrous component from which at least a portion of the essential oil and water had been removed from the wood raw material. When the fibrous component was observed under an optical microscope, it was confirmed that it contained green or blue parts and contained leaf-derived materials.

[0058] By adjusting the conditions of the crushing process of the treated Todomatsu material, a solid fibrous component A with an average particle size of 7 μm was produced.

[0059] (Examples 1 to 5, Comparative Example 1) A resin composition containing the specified amounts of polypropylene and fibrous component A shown in Table 1 was fed into an extruder and melt-kneaded at 180°C. The resin composition was then extruded from the extruder, and the extruded resin composition was cooled to prepare a cubic test piece with a side length of 100 mm.

[0060] The deodorizing properties (sensory deodorizing effect) of the obtained test pieces were measured in the following manner, and the results are shown in Table 1.

[0061] (Sensory deodorizing effect 1) A 10-liter air bag with a cock was prepared. One test piece and about 30 ppm ammonia gas were fed into the air bag, which was then sealed and left at 20°C for 300 minutes. The cock of the air bag was then opened, and the air bag was directly sniffed and evaluated according to the six-level odor intensity rating method. Ten people were used to evaluate the sensory deodorizing effect of each test piece. The arithmetic mean value of the evaluations of the test pieces was calculated.

[0062] <Evaluation criteria> (Score) (Content) 0. It was odorless. 1...It was a smell that I could finally detect. 2. It was a smell that I could recognize. 3. It was an easily detectable smell. 4. There was a strong smell. 5. It had a strong smell.

[0063] [Table 1]

[0064] Example 6 A resin composition containing 100 parts by weight of polypropylene and 0.6 parts by weight of fibrous component A was fed to an extruder and melt-kneaded at 180°C, and then molded into a tray (length 48 cm x width 36 cm x depth 4.5 cm) corresponding to 24 in Figure 3 using an injection molding machine.

[0065] (Sensory deodorizing effect 2) The tray formed above is 2m 3 The booth was set up in a windowed booth, and filter paper soaked in 0.5ml of 7% aqueous ammonia solution was placed on the tray and left at 20℃ for 300 minutes. Next, the inside of the booth was directly smelled through the booth window and rated according to the six-level odor intensity rating method (the same rating method as in Sensory Deodorizing Effect 1) and the nine-level pleasantness / unpleasantness rating method. Ten people were assigned to evaluate the sensory deodorizing effect of each test piece. The arithmetic mean of the ratings was calculated.

[0066] <Comfort / discomfort evaluation criteria> (Score) (Content) -4: Extremely uncomfortable -3: Very uncomfortable -2: Unpleasant -1: Somewhat uncomfortable 0: Neither pleasant nor unpleasant +1: Somewhat comfortable +2: pleasure +3: Very comfortable +4: Extremely comfortable

[0067] [Table 2]

[0068] (Sensory deodorizing effect 3) The test was conducted in the same manner as above for sensory deodorizing effect 1 and 2, except that the odor was replaced with a simulated cat feces and urine odor and three drops were dropped onto the filter paper using a disposable pipette, and the evaluation was performed according to the six-level odor intensity rating method and the nine-level pleasantness / unpleasantness rating method. Ten people were assigned to evaluate the sensory deodorizing effect of each test piece. The arithmetic mean of the evaluations was calculated.

[0069] [Table 3]

[0070] As described above, a synthetic resin containing a fibrous component obtained by heating the wood and / or leaves of a tree with microwaves under reduced pressure and removing at least a portion of the essential oils and water content was found to be less susceptible to the generation of unpleasant odors caused by ammonia and imitation cat feces and urine odors.

[0071] Therefore, it has been found that by using the above-mentioned synthetic resin for at least a part of a pet toilet, it is possible to prevent the generation of unpleasant odors caused by pet excrement and waste, thereby maintaining a good breeding environment.

[0072] Example 7 A resin composition containing 100 parts by weight of polypropylene and 0.6 parts by weight of fibrous component A was fed to an extruder and melt-kneaded at 180°C, after which an injection molding machine was used to mold a lattice corresponding to 21 in Fig. 3. This lattice was installed in place of the lattice of a conventional system-type pet toilet, cat litter was placed on top of the lattice, an absorbent was placed in the tray, and the toilet was used as a cat toilet for about 3 days, and the smell of cat feces and urine was successfully suppressed. [Explanation of symbols]

[0073] 1 …Pet toilet (single layer type) 10 …Pet toilet (2-layer type) 11...Slat 12...Urine absorbent 13…Pet toilet unit 20…Pet toilet (system type) 21...Slat 22 …Urine absorbent 23…Pet toilet unit 24…Tray

Claims

1. A two-layer or system-type pet toilet in which the toilet body is divided into upper and lower sections by a urine-permeable partition layer, wherein at least the urine-permeable partition layer is molded from a synthetic resin containing a fibrous component obtained by heating the wood and / or leaves of a tree with microwaves under reduced pressure to remove at least a portion of the essential oils and moisture.

2. 2. The pet toilet according to claim 1, which contains 0.01 to 20 parts by mass of a fibrous component per 100 parts by mass of the synthetic resin.

3. 3. The pet toilet according to claim 1, wherein the synthetic resin contains a polyolefin resin.

4. 4. The pet toilet according to claim 1, wherein the toilet body is divided into upper and lower layers by a urine-permeable partition layer, and an excrement treating material is placed in the upper layer and a urine absorbing material is placed in the lower layer.

5. 2. The pet toilet according to claim 1, wherein the urine-permeable partition layer is a lattice.

6. A method for manufacturing a pet toilet, comprising: supplying a synthetic resin composition containing a synthetic resin and a fibrous component obtained by removing at least a part of essential oil and moisture from a wood material containing Abies sachalinensis to a kneading device; heating and melting and kneading the synthetic resin composition; and supplying the synthetic resin composition to a mold to manufacture the pet toilet, A method for manufacturing a pet toilet, characterized in that the mold is a two-layer type or system type urine-permeable partition layer in which the toilet body is divided into upper and lower parts by a urine-permeable partition layer.

7. A method for manufacturing a pet toilet as described in claim 6, wherein the urine-permeable partition layer is a lattice.

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