JP4640799B2 - Excrement disposal material for pets - Google Patents
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- JP4640799B2 JP4640799B2 JP2005179760A JP2005179760A JP4640799B2 JP 4640799 B2 JP4640799 B2 JP 4640799B2 JP 2005179760 A JP2005179760 A JP 2005179760A JP 2005179760 A JP2005179760 A JP 2005179760A JP 4640799 B2 JP4640799 B2 JP 4640799B2
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Description
本発明は、猫や犬等のペットの***物の処理に用いられるペット用***物処理材、特に、猫用トイレ本体を簀の子により上下に区画した場合に、上層部分に用いる***物処理材に関する。 The present invention relates to a pet excrement disposal material used for the treatment of pet excrement such as cats and dogs, and more particularly to an excrement disposal material used for an upper layer portion when a cat toilet body is partitioned vertically by a puppet. .
猫や犬等のペットの***物を処理するためのペット用トイレとして、トイレ本体を多孔質部材である簀の子により上下に区画して、上層部分（上方部分）に***物処理材を敷設し、下層部分（下方部分）に例えば吸水性樹脂、植物性繊維、パルプ等からからなる尿吸収材を敷設してなるものが知られている（例えば、特許文献１、特許文献２参照）。 As a toilet for pets for processing pet excrement such as cats and dogs, the toilet body is partitioned vertically by a spider that is a porous member, and excrement disposal material is laid on the upper layer part (upper part), A material obtained by laying a urine absorbent material made of, for example, a water-absorbent resin, vegetable fiber, pulp, or the like in the lower layer portion (lower portion) is known (see, for example, Patent Document 1 and Patent Document 2).
これらのペット用トイレにおいては、上層部分に敷設された***物処理材は、ペットが***する尿を素早く通過させ、通過した尿を簀の子の透液孔を介して下層部分に落下させ、落下した尿を下層部分に配置された尿吸収マット等の尿吸収材に積極的に吸収させるものである。***物処理材としては、天然針葉樹のおが屑からなる挽素材を加熱圧縮してペレット状とし、水分の吸収によって自己崩壊するようにしたトイレ砂があるが（特許文献３参照）、これを上記ペット用トイレに使用すると、吸尿によって該トイレ砂が崩壊し、吸尿した状態にある崩壊物が前記多孔質部材の開口を通じて落下して、その下にある前記吸尿部材上に散乱してしまい、前記トイレ砂のみの取り替えに非常に手間がかかってしまう。また崩壊物の一部が前記多孔質部材上に残存して悪臭が発生する。更に、吸尿による崩壊の度に該トイレ砂を取り替えなければならず不経済である。 In these pet toilets, the excrement disposal material laid in the upper layer part quickly passes the urine excreted by the pet, drops the passed urine to the lower part part through the perforated hole of the spider child, and dropped. Urine is actively absorbed by a urine absorbing material such as a urine absorbing mat disposed in the lower layer portion. As the excrement disposal material, there is toilet sand which is made by compressing a ground material made from sawdust of natural conifers into a pellet form and self-disintegrating by absorbing moisture (see Patent Document 3). When the toilet sand is used, the toilet sand collapses due to urine absorption, and the collapsed substance in the urine absorption state falls through the opening of the porous member and is scattered on the urine absorption member underneath. It takes a lot of time to replace only the toilet sand. Further, a part of the collapsed material remains on the porous member, and a bad odor is generated. Furthermore, it is uneconomical that the toilet sand must be replaced each time it collapses due to urine absorption.
そこで、植物由来の素材の粉砕物と合成樹脂を組合せ、吸水しても崩壊しない程度の保型性を持たせることにより、当該問題を解決した技術がある（特許文献４参照）。これは、２５℃の水中に５秒間浸漬したときの微粉発生率５％以下、吸水率１０％以下とすることにより達成したものである。しかしながら、当該技術は、１週間〜１ヶ月程度の使用であれば性能が十分発揮されているが、１ヶ月以上長期使用する場合は、猫の尿によって膨潤した当該物品は消臭性能が低下してしまうのでこれを取り除き、新たに補給するという作業が必要であった。これらの飼い主負担を軽減するには、更に膨潤や崩壊しないという耐水性に加え、高度な消臭性を保証し、かつ、飼い主に物品の物性変化を認知させない程度の外観安定性が必要である。 Therefore, there is a technique that solves this problem by combining a pulverized material of a plant-derived material and a synthetic resin, and having a shape-retaining property that does not collapse even when water is absorbed (see Patent Document 4). This is achieved by setting the fine powder generation rate to 5% or less and the water absorption rate to 10% or less when immersed in water at 25 ° C. for 5 seconds. However, the technology is sufficiently effective when used for about one week to one month, but when used for more than one month, the article swelled by cat urine has reduced deodorizing performance. It was necessary to remove this and replenish it. To reduce the burden on these owners, in addition to water resistance that prevents swelling and disintegration, it is necessary to ensure a high level of deodorization and to ensure that the owner does not recognize changes in physical properties of the articles. .
一方、ゼオライトを結合剤を用いて円柱状に造粒したペットサンド用造粒体が開示されている（特許文献5参照）。この技術は、ゼオライトの微孔に臭気分子が吸着されることにより消臭効果を発現するものである。また、悪臭の消臭剤として、特定のアルミノシリケート粒子を用いた技術もある（特許文献６参照）。
本発明は、例えば１ヶ月以上の長期使用をした場合にも、部分的な除去作業や補給作業を施さなくても使用できる、膨潤や崩壊しないという耐水性に加え、消臭性能を高度なレベルで持続するペット用***物処理材を提供することを目的とする。
ペット用トイレにおいては、繰り返し***される尿に耐え得る性能を維持し続けることが要求される。例えば、猫用トイレに使用する猫砂は、単に撥水性を高めただけでは、表面に付着して残った尿が臭いを発生する。このため、表面に付着した尿は適時吸収し、消臭するという性能を持続させることが要求される。一方で、猫砂は尿を吸収するに従って消臭性能は低下する。従って、尿を吸収しつつ、かつ消臭性能を維持するという高度な性能が要求される。
The present invention has a high level of deodorizing performance in addition to water resistance that does not swell or disintegrate even if it is used for a long period of time such as one month or longer, without partial removal work or replenishment work. It aims at providing the excrement disposal material for pets which is sustained by.
In a pet toilet, it is required to continue to maintain performance capable of withstanding urine excreted repeatedly. For example, cat sand used for a cat litter simply raises the water repellency, and urine remaining on the surface generates odor. For this reason, it is required to maintain the performance of absorbing and deodorizing urine adhering to the surface in a timely manner. On the other hand, the deodorizing performance of cat sand decreases as it absorbs urine. Therefore, high performance is required to absorb urine and maintain deodorant performance.
本発明者は、当該課題について検討した結果、植物由来の素材の粉砕物が有する消臭機能を持続させるためには、植物由来の素材の粉砕物を使用して成形された***物処理材が、使用するに従って徐々に膨潤することにより、内部の消臭機能を有する新たな素材の表面を露出させることが有効であることを見出した。そして、植物由来の素材の粉砕物を主構成基材としたペット用***物処理材にテクトケイ酸塩を加えると、単にテクトケイ酸塩による消臭性能の向上のみならず、長期間使用した場合でも徐々に膨潤する特徴を有し、高度な消臭機能を持続することを見出した。また、その膨潤度合いは、崩壊しない程度に進行することが有効であり、その最適範囲も見出した。 As a result of studying the problem, the present inventor, in order to maintain the deodorizing function of the pulverized material derived from the plant, the excrement treatment material formed using the pulverized material derived from the plant The present inventors have found that it is effective to expose the surface of a new material having an internal deodorizing function by gradually swelling as it is used. And, when tectonic silicate is added to pet excreta treating material whose main constituent is a pulverized material derived from plants, not only the improvement in deodorizing performance by tectonic silicate but also when used for a long time It has been found that it has a characteristic of gradually swelling and maintains a high deodorizing function. In addition, it is effective that the degree of swelling proceeds to such an extent that it does not collapse, and the optimum range was also found.
従って、本発明は、植物由来の素材の粉砕物を主構成基材としたペット用***物処理材であって、１）植物由来の素材の粉砕物を７０〜９８．９９質量％、２）合成樹脂を１〜２０質量％、及び３）テクトケイ酸塩を０．０１〜５質量％含むペット用***物処理材を提供することにより、上記目的を達成したものである。 Therefore, the present invention is a pet excreta treating material using a pulverized product of plant-derived material as a main constituent substrate, and 1) 70 to 99.99% by mass of pulverized product of plant-derived material and 2) The object is achieved by providing a pet excreta treating material containing 1 to 20% by mass of a synthetic resin and 3 to 5% by mass of tectosilicate.
本発明のペット用***物処理材によれば、例えば１ヶ月以上の長期使用をした場合にも、外観の変化が少なく（保型性）、徐々に膨潤するという耐水性（撥水性、膨潤防止性）を有し、消臭性能を高度なレベルで持続する（消臭効果持続性）、ペット用***物処理材を得ることができる。
According to the excrement disposal material for pets of the present invention, for example, even when used for a long period of one month or longer, there is little change in appearance (shape retention) and water resistance (water repellency, prevention of swelling ) that gradually swells. The pet excrement treating material can be obtained that has a deodorizing performance at a high level (deodorizing effect persistence).
本発明のペット用***物処理材（以下、単に***物処理材ともいう）は、植物由来の素材の粉砕物を７０〜９８．９９質量％、合成樹脂を１〜２０質量％、及びテクトケイ酸塩を０．０１〜５質量％含むものであるが、所定形状に成形された成形物とすることが好ましい。***物処理材の形状の一例を図１に示す。図１に示す***物処理材１は、高さが直径よりもやや大きな円柱状の形状を
している。この直径は、３〜７ｍｍ、好ましくは４〜６ｍｍ程度であり、高さは３〜１５ｍｍ、好ましくは７〜１５ｍｍ程度である。
The excrement disposal material for pets of the present invention (hereinafter also simply referred to as excrement disposal material) is 70 to 99.99% by mass of plant-derived material, 1 to 20% by mass of synthetic resin, and tectosilicate. Although it contains 0.01-5 mass% of salt, it is preferable to set it as the molded object shape | molded by the predetermined shape. An example of the shape of the excrement disposal material is shown in FIG. The excrement disposal material 1 shown in FIG. 1 has a cylindrical shape whose height is slightly larger than the diameter. This diameter is about 3 to 7 mm, preferably about 4 to 6 mm, and the height is about 3 to 15 mm, preferably about 7 to 15 mm.
***物処理材１は、そのまま浅底のトレー等に敷き詰めて、いわゆる猫砂として用いることもできるが、好ましくは図１に示すペット用***物処理システム１０において用いられる。ペット用***物処理システム１０においては、トレー２内に板状又はシート状の***物吸収体３を敷設し、その上に透液性のすのこ４を載置し、該すのこ４上に***物処理材１が敷き詰められている。
The excrement disposal material 1 can be used as so-called cat sand by being spread on a shallow tray or the like as it is, but is preferably used in the pet
本発明の***物処理材に使用する植物由来の素材としては、木本及び草本の何れを用いることもできる。これらの粉砕物としては、例えば木本の粉砕物（木質又は樹皮の粉砕物）、種子油残査、穀物外皮粉砕物、草本粉砕物などが挙げられる。特に、成形性、消臭効果の点から、木本の粉砕物、特にスギ科、マツ科又はヒノキ科などの針葉樹の粉砕物を用いることが好ましい。粉砕物の大きさは、０．０１〜５ｍｍ、特に０．０５〜２ｍｍ程度であることが成形性の点から好ましい。ペット用***物処理材中の含有量は、７０〜９８．９９質量％であるが、更に８５〜９８．９９質量％、特に８８〜９８．９９質量％とすることが、消臭効果持続性、植物由来の素材特有の好ましい匂いを有する点から好ましい。 As the plant-derived material used for the excrement disposal material of the present invention, either woody or herbaceous can be used. Examples of these pulverized products include wood pulverized products (woody or bark pulverized products), seed oil residue, grain hull pulverized products, herbaceous pulverized products, and the like. In particular, from the viewpoint of moldability and deodorizing effect, it is preferable to use a pulverized product of wood, particularly a crushed product of conifers such as cedar, pine or cypress. The size of the pulverized product is preferably about 0.01 to 5 mm, particularly about 0.05 to 2 mm from the viewpoint of moldability. The content in the excrement disposal material for pets is 70 to 99.99% by mass, but it is 85 to 99.99% by mass, particularly 88 to 99.99% by mass, and the deodorizing effect is sustained. From the point of having a preferable odor peculiar to plant-derived materials.
本発明の***物処理材に使用する合成樹脂としては、ポリエチレンやポリプロピレン等のポリオレフィン類、ポリエチレンテレフタレート等のポリエステル類、ポリアミド類、ビニル系樹脂類などが挙げられる。接着材としては、エチレン・酢酸ビニル共重合体などの木材との親和性が高いものが望ましく、また、メルトフローレート（以下、「MFR」と記載する）が０．１〜２００g/10mim.、更に０．２〜５０g/10mim.、特に２〜１５g/10mim.のものを用いることが、保型性、膨潤性、消臭効果の持続性の点から好ましい。ＭＦＲは、ＪＩＳ Ｋ７２１０−１９９９（ＩＳＯ１１３３−１９９７）に従い測定される。ペット用***物処理材中の含有量は、１〜２０質量％であるが、更に５〜１５質量％、特に８〜１２質量％とすることが、長期使用をした場合にも保型性、撥水性、膨潤防止性を有し、消臭効果持続性が高い点から好ましい。 Examples of the synthetic resin used in the excrement disposal material of the present invention include polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate, polyamides, and vinyl resins. The adhesive preferably has a high affinity with wood such as ethylene / vinyl acetate copolymer, and has a melt flow rate (hereinafter referred to as “MFR”) of 0.1 to 200 g / 10 mim. Further, it is preferable to use 0.2 to 50 g / 10 mim., Particularly 2 to 15 g / 10 mim. From the viewpoint of shape retention, swelling property, and deodorizing effect. MFR is measured according to JIS K7210-1999 (ISO1133-1997). Although the content in the excrement disposal material for pet is 1 to 20% by mass, it is further 5 to 15% by mass, particularly 8 to 12% by mass, even when used for a long time, It is preferable because it has water repellency and anti-swelling properties and has a high deodorizing effect.
更に、本発明の***物処理材に使用する合成樹脂は、MFRが０．１〜１００g/10mim.、好ましくは０．２〜５０g/10mim.で引張弾性率が１００MPa以下、好ましくは７０MPa以下のものと、MFRが０．１〜２００g/10mim.、好ましくは２〜５０g/10mim.で引張弾性率が１００〜７００Mpa、好ましくは１００〜３００MPaのものを１／９〜９／１の質量比で混合したものを用いることが好ましい。配合比率は、更に３／７〜７／３、特に３／７〜５／５であることが、保型性、膨潤性、消臭効果の持続性の点から好ましい。MFRが低く、かつ引張弾性率が低い樹脂に、MFRが高く、かつ引張弾性率が高い樹脂を混ぜることにより、木材と合成樹脂が十分に結合し、かつ剛性が十分となり、水の浸潤性が過度にならず、結合部の破壊が進まず、撥水性を高めなくても適度な耐水性を確保できるため、消臭効果持続性の点から好ましい。 Furthermore, the synthetic resin used for the excrement disposal material of the present invention has an MFR of 0.1 to 100 g / 10 mim., Preferably 0.2 to 50 g / 10 mim. And a tensile elastic modulus of 100 MPa or less, preferably 70 MPa or less. And those having an MFR of 0.1 to 200 g / 10 mim., Preferably 2 to 50 g / 10 mim. And a tensile modulus of 100 to 700 MPa, preferably 100 to 300 MPa, in a mass ratio of 1/9 to 9/1. It is preferable to use a mixture. The blending ratio is further preferably 3/7 to 7/3, and particularly preferably 3/7 to 5/5 from the viewpoints of shape retention, swelling property, and deodorizing effect. By mixing a resin with a low MFR and a low tensile elastic modulus with a resin with a high MFR and a high tensile elastic modulus, the wood and the synthetic resin are sufficiently bonded, the rigidity is sufficient, and the water is infiltrated. This is preferable from the viewpoint of sustaining the deodorizing effect because it does not become excessive, the breakage of the bonding portion does not proceed, and appropriate water resistance can be secured without increasing water repellency.
本発明の***物処理材に使用するテクトケイ酸塩は、文献 鉱物化学II（著者：須藤俊男、発
行：共立出版株式会社）Ｐ．２５９〜Ｐ．２６３に記載されているものが挙げられる。ペット用***物処理材中の含有量は、０．０１〜５質量％であるが、更に０．０１〜３質量％、特に０．０１〜２質量％とすることが、長期使用をした場合にも保型性、撥水性、膨潤防止性を有し、消臭効果持続性が高い点、植物由来の素材特有の匂いに影響を与えない点から好ましい。テクトケイ酸塩の中でも、特に、ゼオライト（沸石群）が好ましい。ゼオライトはその単位格子組成からタイプＡ、Ｘ、Ｌ等が知られているが、特に限定されない。
The tectosilicate used in the excrement disposal material of the present invention is described in the literature Mineral Chemistry II (author: Toshio Sudo, published by Kyoritsu Shuppan Co., Ltd.) 259-P. Those described in H.263. The content in the excrement disposal material for pets is 0.01 to 5% by mass, but further 0.01 to 3% by mass, especially 0.01 to 2% by mass, when used for a long time Furthermore, it is preferable in that it has shape retention, water repellency, and swelling prevention, has a high deodorizing effect, and does not affect the odor peculiar to plant-derived materials. Among the tectosilicates, zeolite (zeolite group) is particularly preferable. Zeolite is known from types A, X, L, etc. from its unit cell composition, but is not particularly limited.
また、テクトケイ酸塩の組成は、sM(1)xOy・tM(2)2O・Al2O3・uSiO2・vRmQn・wH2O
（式中、M(1)はAg、Cu、Zn及びFeからなる群より選ばれる１種又は２種以上、M(2)はNa、K及びHからなる群より選ばれる1種又は２種以上、RはNa、K、Ca及びMgからなる群より選ばれる1種又は２種以上、QはCO3、SO4、NO3、OH及びClからなる群より選ばれる1種又は２種以上、sは0＜s≦3 、tは0≦t≦3、但し、s+t＝0.5〜3、uは0.5≦u≦6、vは0＜v≦2、wはw≧0、xは1≦x≦2、yは1≦y≦3、mは1≦m≦2、nは1≦n≦3を満たす）であることが長期使用をした場合にも保型性、撥水性、膨潤防止性を有し、消臭効果持続性が高い点から好ましい。更に、テクトケイ酸塩は、比表面積が１m2／g以上70m2／g未満、更に１〜
６５m2／g、特に３０〜６５m2／gであることが、高度な消臭効果を有する点から好ましい。従
来、上記組成を有するテクトケイ酸塩は、それ自体は悪臭の消臭剤として知られているが、その特定量を植物由来の素材の粉砕物及び合成樹脂と組み合わせ、ペット用***物処理材とした場合には、***物処理材の物性を変え、保型性、撥水性、膨潤防止性を付与することにより消臭効果の持続性を向上させる特性を有することは意外であった。
The composition of tectosilicate is sM (1) xOy ・ tM (2) 2 O ・ Al 2 O 3・ uSiO 2・ vRmQn ・ wH 2 O
(Wherein M (1) is one or more selected from the group consisting of Ag, Cu, Zn and Fe, and M (2) is one or two selected from the group consisting of Na, K and H R is one or more selected from the group consisting of Na, K, Ca and Mg, and Q is one or more selected from the group consisting of CO 3 , SO 4 , NO 3 , OH and Cl. , S is 0 <s ≦ 3, t is 0 ≦ t ≦ 3, where s + t = 0.5 to 3, u is 0.5 ≦ u ≦ 6, v is 0 <v ≦ 2, w is w ≧ 0, x Is 1 ≦ x ≦ 2, y is 1 ≦ y ≦ 3, m is 1 ≦ m ≦ 2, and n is 1 ≦ n ≦ 3). From the point of having swelling prevention property and high deodorant effect persistence. Furthermore, the tectosilicate has a specific surface area of 1 m 2 / g or more and less than 70 m 2 / g,
65 m 2 / g, to be particularly 30~65m 2 / g, from the viewpoint of having a high deodorizing effect. Conventionally, the tectosilicate having the above composition is known as a deodorant of bad odor itself, but a specific amount thereof is combined with a pulverized product of a plant-derived material and a synthetic resin, In such a case, it was surprising that the properties of the excrement treatment material were changed to improve the sustainability of the deodorizing effect by imparting shape retention, water repellency, and swelling resistance.
上記組成を有するテクトケイ酸塩の形態は、針状、板状、柱状等が挙げられるが、ペット用***物処理材の保型性、膨潤防止性等の点から、カンクリナイト様の形態を有するものが好ましい。また、カンクリナイト様の形態には、ウニ型、テトラポッド型があるが、ペット用***物処理材の保型性、撥水性、膨潤防止性等の点からウニ型が好ましい。また、製造条件にもよるが、針状、板状、柱状等の集合体でもよく、これらが更に集合して球状、塊状となっていても良い。更に、非晶質、結晶質のいずれでも良いが、ペット用***物処理材の保型性、撥水性、膨潤防止性等の点から結晶質であることが好ましい。 Examples of the form of the tectosilicate having the above composition include needle-like, plate-like, and columnar shapes, but have a cancrinite-like form from the viewpoint of shape retention and anti-swelling property of pet excrement disposal materials. Those are preferred. The cancrinite-like forms include a sea urchin type and a tetrapod type, but the sea urchin type is preferred from the viewpoint of the shape retention property, water repellency, anti-swelling property, etc. of pet excrement disposal materials. Depending on the production conditions, it may be an aggregate such as a needle shape, a plate shape, or a column shape, and these may be further aggregated into a spherical shape or a lump shape. Furthermore, although it may be either amorphous or crystalline, it is preferably crystalline from the viewpoints of shape retention, water repellency, anti-swelling property, etc. of pet excrement disposal materials.
本発明の***物処理材に使用するテクトケイ酸塩の粒子径は、保型性、撥水性、膨潤防止性、成型性等の点から0.1〜1000μmであることが好ましい。 The particle diameter of the tectosilicate used in the excrement disposal material of the present invention is preferably 0.1 to 1000 μm from the viewpoints of shape retention, water repellency, anti-swelling property, moldability and the like.
本発明の***物処理材には、前述の各成分に加えて、必要に応じ抗菌剤、着色剤等を含有させることもできる。これらの成分の量は、***物処理材１の質量に対して、それぞれ０．０１〜０．５質量％とすることが好ましい。抗菌剤としては、安息香酸ナトリウム、ソルビン酸、ソルビン酸カリウム、ジデシルメチルアンモニウム、塩化ベンザルコニウム、ポリフェノール類、銀、銅等が挙げられる。 The excrement disposal material of the present invention may contain an antibacterial agent, a coloring agent, and the like as necessary in addition to the above-described components. It is preferable that the quantity of these components shall be 0.01-0.5 mass% with respect to the mass of the excrement disposal material 1, respectively. Antibacterial agents include sodium benzoate, sorbic acid, potassium sorbate, didecylmethylammonium chloride, benzalkonium chloride, polyphenols, silver, copper and the like.
本発明の***物処理材は多孔質とし、ある程度の吸水性を有していることが好ましい。吸水性は、***物処理材１が多孔質であること、及び***物処理材１が植物由来の素材を含んでいることに由来している。ここで、***物処理材１はその吸水性が高いことは必須でなく、むしろ適度な吸水性を有し、かつ一旦吸水した後は徐々に膨潤し、新たに表面が露出することによって次に吸水する場合の吸水率が増大するものであることが好ましい。 The excrement disposal material of the present invention is preferably porous and has a certain level of water absorption. The water absorption is derived from the fact that the excrement disposal material 1 is porous and that the excrement disposal material 1 contains a plant-derived material. Here, it is not essential that the excrement disposal material 1 has a high water absorption. Rather, the excrement disposal material 1 has an appropriate water absorption, and once it absorbs water, it gradually swells and the surface is newly exposed. It is preferable that the water absorption rate when water is absorbed is increased.
ここで吸水率は、一定量の***物処理材を一定温度の水中に一定時間浸漬し、余分な水を拭き取った後、浸漬前の***物処理材の質量に対する浸漬後の質量増加分の割合を測定することにより求める等の方法により求めることができる。 Here, the water absorption rate is the ratio of the increase in mass after immersion to the mass of excrement treatment material before immersion after immersing a certain amount of excrement treatment material in water at a constant temperature for a certain period of time and wiping off excess water. It can obtain | require by methods, such as calculating | requiring by measuring.
***物処理材１の最初の吸水率は２〜９質量％、更に３〜８質量％、特に４〜７質量％であることが、***物処理材の保型性、撥水性、膨潤防止性、消臭効果持続性の点から好ましい。 The initial water absorption rate of the excrement disposal material 1 is 2 to 9% by mass, more preferably 3 to 8% by mass, and particularly 4 to 7% by mass. From the standpoint of sustaining the deodorizing effect.
本発明の***物処理材は、上記吸水率の測定方法にて測定した場合に、３回目の吸水率が１回目の吸水率よりも増加しており、かつ３回目の吸水率が３〜３０質量％の範囲にあることが好ましい。また、３回目の吸水率は、好ましくは５〜２０質量％、更に７〜１２質量％であることが、消臭効果持続性の点から好ましい。３回目の吸水率を３〜３０質量％の範囲とすることにより、長期間使用しても尿を適量吸収し、消臭効果持続性を有する点から好ましい。 When the excrement disposal material of the present invention is measured by the method for measuring water absorption, the third water absorption is higher than the first water absorption, and the third water absorption is 3 to 30. It is preferable to be in the range of mass%. In addition, the third water absorption rate is preferably 5 to 20% by mass, and more preferably 7 to 12% by mass from the viewpoint of sustaining the deodorizing effect. By setting the third water absorption rate within the range of 3 to 30% by mass, it is preferable from the viewpoint of absorbing a proper amount of urine even when used for a long period of time and having a deodorant effect sustainability.
更に、１回目から３回目の吸水率の増加率は、１．１〜６倍、更に１．２〜４倍、特に２〜３倍であることが、消臭効果持続性の点から好ましい。１回目から３回目の吸水率の増加率を１．１〜６倍の範囲とすることにより、長期間使用しても尿を適量吸収し、消臭効果持続性の点から好ましい。 Furthermore, the rate of increase in the water absorption rate from the first time to the third time is preferably 1.1 to 6 times, more preferably 1.2 to 4 times, and particularly preferably 2 to 3 times from the viewpoint of sustaining the deodorizing effect. By setting the rate of increase in the water absorption rate from the first time to the third time in the range of 1.1 to 6 times, an appropriate amount of urine is absorbed even when used for a long period of time, which is preferable from the viewpoint of sustaining the deodorizing effect.
本発明の***物処理材は、製造後、一度も吸水していない時点の比重が０．８〜１．２であることが好ましい。比重は、更に０．９〜１．１、特に０．９８〜１．０７とすることが好ましい。比重を０．８〜１．２の範囲とすることにより、長期使用をした場合にも保型性、撥水性、膨潤防止性を有し、消臭効果持続性を有する点から好ましい。 The excrement disposal material of the present invention preferably has a specific gravity of 0.8 to 1.2 when it has not absorbed water after production. The specific gravity is preferably 0.9 to 1.1, particularly 0.98 to 1.07. By setting the specific gravity in the range of 0.8 to 1.2, it is preferable from the viewpoint of having a shape retention property, water repellency and swelling prevention property even when used for a long period of time, and having a deodorizing effect persistence.
本発明の***物処理材の成形方法は、植物由来の素材の粉砕物、合成樹脂、及びテクトケイ酸塩を混合した後、合成樹脂の融点以上の温度にて圧縮押出成形造粒することが、保型性、膨潤防止性、消臭効果持続性の点から好ましい。また、圧縮押出成形造粒する際に、加熱保温することが保型性、撥水性、膨潤防止性を有し、消臭効果持続性を高くする点から好ましい。加熱保温の条件は、素材の構成、圧縮度によって異なる。 The method for molding the excrement disposal material of the present invention is to mix the pulverized material of plant-derived material, synthetic resin, and tectosilicate, and then to perform compression extrusion granulation at a temperature equal to or higher than the melting point of the synthetic resin. It is preferable from the viewpoints of shape retention, swelling prevention, and deodorant effect sustainability. In addition, it is preferable to keep the temperature by heating at the time of compression extrusion molding granulation from the viewpoint of having shape retention, water repellency, and swelling prevention and increasing the deodorizing effect sustainability. The conditions of heat insulation are different depending on the material composition and the degree of compression.
従来技術においては、植物由来の素材の粉砕物と合成樹脂を混合した場合に、合成樹脂の比率を高くすると、撥水性が高くなり吸水率は低下するが、一方で成形の際に多孔質となることで比重が低くなること、内部に発生したガス等の圧力によって内部から破壊されること等により、膨潤し易く、保型性、消臭効果の持続性の点から好ましくなかった。従来の加工時の自然発熱を利用した方法（特許文献４）や、加熱成型（特許文献３）といった製法では、圧縮時に発生する内部のガス圧力により生じた抵抗力を利用して圧密化するが、ガス圧力に破壊されないように圧密化度合いを強めるために抵抗力を高める手段を施すと発熱量が大きくなる。すると、却ってガスの発生量が増加し、内部から破壊しようとする力が大きくなり、破壊されるという矛盾があった。合成樹脂の比率を多くすると合成樹脂が溶融している高温状態では剛性が弱くなり、内部のガス圧力に耐えられずに破壊され、比重が低下することとなる。以上の理由から、合成樹脂の比率を１０質量％程度とすると、その比重は０．８程度となり、比率を増やすと更に比重が低下する。 In the prior art, when plant material-derived pulverized material and synthetic resin are mixed, increasing the ratio of the synthetic resin increases water repellency and decreases the water absorption rate. As a result, the specific gravity is lowered, and it is destroyed from the inside by the pressure of the gas generated inside, etc., which is not preferable from the viewpoint of shape retention and deodorizing effect. In a conventional method using natural heat generation during processing (Patent Document 4) and a method such as heat molding (Patent Document 3), consolidation is performed using a resistance force generated by internal gas pressure generated during compression. If a means for increasing the resistance force is applied in order to increase the degree of consolidation so as not to be destroyed by the gas pressure, the amount of heat generation increases. Then, there was a contradiction that the amount of gas generated increased, the force to destroy from the inside increased, and it was destroyed. When the ratio of the synthetic resin is increased, the rigidity becomes weak in a high temperature state where the synthetic resin is melted, and the resin is destroyed without being able to withstand the internal gas pressure, and the specific gravity is lowered. For the above reasons, when the ratio of the synthetic resin is about 10% by mass, the specific gravity is about 0.8, and when the ratio is increased, the specific gravity further decreases.
そこで、本願発明の***物処理材においては、例えば圧縮成型前の原料を予備加熱（１００〜１７０℃、好ましくは１１０〜１３０℃）し、高温で発生する水蒸気を含むガスを予め減少させる（植物由来の素材の水分率が８％以下になる程度）ことによって圧縮時の内部の圧力を下げ、更にガスの減少によって低下する押出穴内の抵抗力を高める（押出穴の長さを極端に長くしたり、入り口よりも高い圧力が内部でかかるように穴内部もしくは出口に押し出し力に対する抵抗力が最大となる狭い部分を設ける）等の手段を施すことにより、合成樹脂の比率を高めても比重を低下させないことが可能となった。 Therefore, in the excrement disposal material of the present invention, for example, the raw material before compression molding is preheated (100 to 170 ° C., preferably 110 to 130 ° C.), and the gas containing water vapor generated at a high temperature is reduced in advance (plant). The moisture content of the raw material is about 8% or less), reducing the internal pressure during compression, and further increasing the resistance in the extrusion hole, which decreases due to the decrease in gas (extending the length of the extrusion hole extremely long) Or by providing a narrow part that maximizes the resistance to the pushing force inside the hole or at the outlet so that a higher pressure is applied to the inside than the inlet), the specific gravity can be increased even if the ratio of the synthetic resin is increased. It became possible not to reduce.
また、***物処理材の成形において、十分な合成樹脂の接着力を得るために、混合物を押出穴へ押し込む押し込みロールが隣接するように設置されている高圧押出が可能な押出成型機を用いて成形するのが好ましい。成形に該押出成型機を用いると、高圧力で上記混合物を成形穴に押し込むことが可能であり、押出穴が深く、押出穴内壁に発生する抵抗力を十分に高めることができる。高い押出抵抗力によって上記混合物を圧密化することができる。先ず、植物由来の素材の粉砕物、合成樹脂の粉末、及びテクトケイ酸塩、必要により殺菌剤、着色剤等を十分に混合する。該混合物を合成樹脂の融点以上に昇温された押出成型機内部に投入する。成型機内部では、昇温、攪拌された後に押出穴内にて圧縮されて混合物粒子が接着し、比重１程度に圧縮成形されることが好ましい。当該成形により、長期間において高い消臭性を維持することができる***物処理材を得ることができる。 In addition, in the molding of the excrement disposal material, in order to obtain a sufficient synthetic resin adhesive force, using an extrusion molding machine capable of high-pressure extrusion installed so that a pushing roll for pushing the mixture into the extrusion hole is adjacent. It is preferable to mold. When the extrusion molding machine is used for molding, the mixture can be pushed into the molding hole with high pressure, the extrusion hole is deep, and the resistance force generated on the inner wall of the extrusion hole can be sufficiently increased. The mixture can be consolidated by high extrusion resistance. First, a plant-derived material pulverized product, synthetic resin powder, tectosilicate, and if necessary, a bactericidal agent, a coloring agent, and the like are sufficiently mixed. The mixture is put into an extruder that has been heated to a temperature higher than the melting point of the synthetic resin. In the molding machine, it is preferable that the mixture particles are compressed in the extrusion hole after being heated and stirred, and the mixture particles are bonded to each other and compression molded to a specific gravity of about 1. By the said shaping | molding, the excrement disposal material which can maintain high deodorizing property in a long term can be obtained.
上記成型機による成形においては、合成樹脂の融点以上に該混合物を昇温するのが好ましい。押出成型機内部の該混合物の圧縮、摩擦による自然発熱を利用しても良く、電熱ヒータ等の発熱体を利用しても良い。合成樹脂の溶融、固化によって、植物由来の素材の粉砕物が該接着材により接着されて所定の成形物が得られる。 In molding by the molding machine, it is preferable to raise the temperature of the mixture above the melting point of the synthetic resin. Natural heat generation due to compression and friction of the mixture inside the extruder may be used, or a heating element such as an electric heater may be used. By melting and solidifying the synthetic resin, a pulverized product of plant-derived material is adhered by the adhesive, and a predetermined molded product is obtained.
以下、本発明を実施例及び比較例に基づいてさらに詳細に説明するが、本発明はこれらに限定されるものではない。 EXAMPLES Hereinafter, although this invention is demonstrated further in detail based on an Example and a comparative example, this invention is not limited to these.
〔実施例１〜３、比較例１、２〕
***物処理材に使用する植物由来の素材として０．０５〜２ｍｍに粉砕した針葉樹の粉砕物、合成樹脂としてポリエチレン（ＭＦＲ：25g／10min、引張弾性率：125Mpa）、又はエチレン・酢酸ビニル共重合体（ＭＦＲ：2g／10min、引張弾性率：50Mpa）、テクトケイ酸塩として市販のゼオライト−Ａ（トヨビルダー：東ソー(株)製）、又はテクトケイ酸塩（組成：0.05Ag2O・0.9Na2O3・Al2O3・2SiO2・0.4NaNO3・0.7H2O）を、表1に示す配合で混合し、実施例１〜３、比較例１、２の***物処理材を成形した。成形方法としては、押し込みロールが隣接するように設置されている高圧押出が可能な押出成型機（(株)ダルトン社 ディスクペレッターＦ−５）を用い、当該押出成型機に針葉樹の粉砕物、合成樹脂、テクトケイ酸塩との混合物を投入した後、１２０℃の温度（合成樹脂の融点以上の温度）にて圧縮押出成形造粒した。
成形された実施例１〜３、比較例１、２の***物処理材について、下記の吸水率測定方法に従って、吸水率を３回測定し、また、下記評価基準に従い、吸水率（撥水性）、膨潤防止性、消臭性を評価した。結果を表１に示す。
[Examples 1 to 3, Comparative Examples 1 and 2]
As a plant-derived material used for excrement disposal materials, pulverized softwood crushed to 0.05 to 2 mm, synthetic resin polyethylene (MFR: 25 g / 10 min, tensile modulus: 125 Mpa), or ethylene / vinyl acetate Combined (MFR: 2 g / 10 min, tensile modulus: 50 Mpa), commercially available zeolite-A as a tectosilicate (Toyobuilder: manufactured by Tosoh Corporation), or tectosilicate (composition: 0.05 Ag 2 O · 0.9 Na 2 O 3 · Al 2 O 3 · 2SiO 2 · 0.4NaNO 3 · 0.7H 2 O) were mixed in the composition shown in Table 1, and the excrement disposal materials of Examples 1 to 3 and Comparative Examples 1 and 2 were molded. . As a molding method, an extrusion molding machine (Dalton Co., Ltd. disk pelleter F-5) capable of high-pressure extrusion is installed so that the pressing rolls are adjacent to each other. After adding a mixture of a synthetic resin and tectosilicate, compression extrusion molding granulation was performed at a temperature of 120 ° C. (a temperature equal to or higher than the melting point of the synthetic resin).
About the excrement disposal material of Examples 1 to 3 and Comparative Examples 1 and 2, the water absorption was measured three times according to the following water absorption measurement method, and the water absorption (water repellency) was measured according to the following evaluation criteria. Swelling prevention property and deodorizing property were evaluated. The results are shown in Table 1.
〔吸水率〕
底面に目開２．８ｍｍのネットを配した直径８０ｍｍ、高さ１００ｍｍの円筒内に、予め４０℃の恒温槽に２時間保管して乾燥させた***物処理材を７０±１ｇ入れ、該***物処理材を該円筒ごと２５℃±３℃の水に３秒間浸漬させる。水から引き上げた後、吸収シート〔キムタオル（商品名、クレシア社製、坪量３０ｇ／ｍ2 ）〕で容器に付着した水を拭き取った後、前記***物処理材を別の同円筒容器に移し替えて該***物処理材の質量を測定する。測定された吸水後の該***物処理材の質量から、水に浸漬させる前に予め測定しておいた該***物処理材の質量を差し引き、該***物処理材の吸水量を求め、次の式に従い、***物処理材の吸水率（％）とした。
吸水率（％）＝〔（浸漬後の***物処理材質量−浸漬前の***物処理材質量）／（浸漬前の***物処理材質量）〕×１００
[Water absorption rate]
70 ± 1g of excrement treatment material stored in a constant temperature bath at 40 ° C for 2 hours and dried in a cylinder of 80mm diameter and 100mm height with a net of 2.8mm mesh on the bottom, is excreted. The material treatment material is immersed in water at 25 ° C. ± 3 ° C. for 3 seconds together with the cylinder. After pulling up from the water, wipe off the water adhering to the container with an absorbent sheet [Kim towel (trade name, manufactured by Crecia Co., Ltd., basis weight 30 g / m @ 2)], and then transfer the excrement disposal material to another cylindrical container. To measure the mass of the excrement disposal material. Subtract the mass of the excrement disposal material measured in advance before immersing in water from the mass of the excrement disposal material after the measured water absorption, determine the water absorption amount of the excrement disposal material, According to the formula, the water absorption rate (%) of the excrement disposal material was determined.
Water absorption rate (%) = [(excrement treatment material mass after immersion−excretion treatment material mass before immersion) / (excrement treatment material mass before immersion)] × 100
〔膨潤防止性〕
吸水率を３回測定した後に２時間乾燥させた***物処理材、及び吸水率測定前の***物処理材について、それぞれ直径４０ｍｍ、高さ６０ｍｍの容量７５．４ｍｌの円筒容器内に入れ、上面ですり切りしたものの質量を測定し、次式により嵩密度を求めた。
嵩密度（ｇ／ｍｌ）＝測定質量／７５．４
更に、次式により体積膨張率を求め、「保型性」の評価を行った。
体積膨張率（％）＝〔（吸水率測定前の嵩密度／吸水率３回測定後の嵩密度）−１〕×１００
（保型性評価）
○：体積膨張率が５０％以内
△：体積膨張率が５０以上、１００％未満
×：体積膨張率が１００％以上
[Swelling prevention]
About the excrement disposal material dried for 2 hours after measuring the water absorption rate three times and the excrement disposal material before measuring the water absorption rate, put them in a cylindrical container with a diameter of 40 mm and a height of 60 mm and a capacity of 75.4 ml. The mass of the chopped material was measured, and the bulk density was determined by the following formula.
Bulk density (g / ml) = Measured mass / 75.4
Further, the volume expansion coefficient was obtained by the following formula, and “shape retention” was evaluated.
Volume expansion rate (%) = [(bulk density before water absorption measurement / bulk density after
(Evaluation of shape retention)
○: Volume expansion coefficient is within 50% Δ: Volume expansion coefficient is 50 or more and less than 100% ×: Volume expansion coefficient is 100% or more
〔消臭性〕
目開２．８mmの網目を底面に配した直径８０mm、高さ４０mmの円筒容器に、充填高さ３０mmに***物処理材を敷き、上方から２０ｃｃの猫尿をかけ、５分後に臭いを嗅ぐという方法を用い、「初回の消臭性」を評価した。また、同様の円筒容器を用い、吸水率を３回測定した後に２時間乾燥させた***物処理材を同量敷き、上方から２０ｃｃの猫尿を１日１回計７日間かけ、７日目の尿滴下５分後に臭いを嗅ぐという方法により評価した消臭性を、「使用１ヵ月後の消臭性」とみなして評価した。評価基準を下記に示した。なお、猫尿は、実際に猫が***した尿を１日１回採取し、冷凍保存しておいたものをその都度解凍し、４０℃に調温したものを使用した。
○：「臭いがしない」、又は「尿臭と認識できない弱い臭いしか発生していない」
△：「尿臭と認識できるが弱い臭い」
×：「明らかに尿臭とわかり、不快感を感じる強い臭い」
[Deodorization]
Put a waste disposal material at a filling height of 30mm on a cylindrical container with a diameter of 80mm and a height of 40mm with a mesh opening of 2.8mm on the bottom, apply 20cc of cat urine from the top, and smell the smell after 5 minutes The “first deodorant property” was evaluated using the method. In addition, using the same cylindrical container, the same amount of excrement disposal material dried for 2 hours after measuring the
○: “No odor” or “A weak odor that cannot be recognized as urine odor is generated”
△: “Recognizable urine odor but weak odor”
×: “A strong odor that is clearly urine and uncomfortable”
表1に示す評価結果から、本発明に係る実施例１〜３の***物処理材は、例えば１ヶ月以上の長期使用をした場合にも、吸水性が高過ぎず、膨潤防止性があり、そのため保型性を有し、消臭性能を高度なレベルで持続できることが判明した。 From the evaluation results shown in Table 1, the excrement disposal materials of Examples 1 to 3 according to the present invention are not too high in water absorption, for example, when they are used for a long period of 1 month or longer, and have swelling prevention properties. Therefore, it has been found that it has shape retention and can maintain the deodorizing performance at a high level.
１ ペット用***物処理材
２ トレー
３ ***物吸収体
４ すのこ
１０ ペット用***物処理システム
1 Pet
Claims (3)
（式中、M(1)はAg、Cu、Zn及びFeからなる群より選ばれる１種又は２種以上、M(2)はNa、K及びHからなる群より選ばれる1種又は２種以上、RはNa、K、Ca及びMgからなる群より選ばれる1種又は２種以上、QはCO3、SO4、NO3、OH及びClからなる群より選ばれる1種又は２種以上、sは0＜s≦3 、tは0≦t≦3、但し、s+t＝0.5〜3、uは0.5≦u≦6、vは0＜v≦2、wはw≧0、xは1≦x≦2、yは1≦y≦3、mは1≦m≦2、nは1≦n≦3を満たす）であり、かつ比表面積が１m2／g以上70m2／g未満である請求項１記載のペット用***物処理材。 The tectosilicate composition is sM (1) xOy ・ tM (2) 2 O ・ Al 2 O 3・ uSiO 2・ vRmQn ・ wH 2 O
(Wherein M (1) is one or more selected from the group consisting of Ag, Cu, Zn and Fe, and M (2) is one or two selected from the group consisting of Na, K and H R is one or more selected from the group consisting of Na, K, Ca and Mg, and Q is one or more selected from the group consisting of CO 3 , SO 4 , NO 3 , OH and Cl. , S is 0 <s ≦ 3, t is 0 ≦ t ≦ 3, where s + t = 0.5 to 3, u is 0.5 ≦ u ≦ 6, v is 0 <v ≦ 2, w is w ≧ 0, x Is 1 ≦ x ≦ 2, y is 1 ≦ y ≦ 3, m is 1 ≦ m ≦ 2, and n is 1 ≦ n ≦ 3), and the specific surface area is 1 m 2 / g or more and less than 70 m 2 / g The pet excreta treating material according to claim 1, wherein
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| JP2007174942A (en) * | 2005-12-27 | 2007-07-12 | Kao Corp | Excrement-treating material for pet |
| JP2009124952A (en) * | 2007-11-20 | 2009-06-11 | Tottori Univ | Deodorant antibacterial bedding for raising animals, and deodorant antibacterial liquid formulation usable therefor |
| JP5713297B2 (en) * | 2012-01-30 | 2015-05-07 | 株式会社コ−チョ− | Method for producing water-absorbing material for excrement disposal and water-absorbing material for excrement disposal |
| JP6168985B2 (en) * | 2013-12-24 | 2017-07-26 | 花王株式会社 | adhesive |
| JP2017079622A (en) * | 2015-10-26 | 2017-05-18 | 花王株式会社 | Pet waste disposal material |
| JP7261042B2 (en) * | 2019-03-05 | 2023-04-19 | 花王株式会社 | Excrement treatment material for pets |
| JP2022042668A (en) | 2020-09-03 | 2022-03-15 | エステー株式会社 | Pet toilet and method for manufacturing the same |
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