JP3766863B2 - Litter for livestock and its manufacturing method - Google Patents
Litter for livestock and its manufacturing method Download PDFInfo
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- JP3766863B2 JP3766863B2 JP2000185809A JP2000185809A JP3766863B2 JP 3766863 B2 JP3766863 B2 JP 3766863B2 JP 2000185809 A JP2000185809 A JP 2000185809A JP 2000185809 A JP2000185809 A JP 2000185809A JP 3766863 B2 JP3766863 B2 JP 3766863B2
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Description
【０００１】
【発明の属する技術分野】
本発明は、家畜用敷料とその製造方法に関するものである。
【０００２】
【従来の技術】
これまで、家畜用敷料としては、稲ワラが主に利用されてきたが、稲ワラは、コンバインを利用する稲作の普及により、細断されて田んぼにまかれるために稲ワラ敷料を入手することは困難になりつつあり、断熱性が良く、動物の尿等の吸収性の良い、稲ワラ敷料代替品の開発が強く要望されている。
特開平８−２５６６２１号公報には、吸水性の良好な古紙の紙片からなる敷料が記載されているが、このものは、敷料として使用した場合に、尿等を吸収してその機械的強度を容易に失ってしまうため、未だ満足し得るものではなかった。
【０００３】
【発明が解決しようとする課題】
本発明は、動物の糞尿等と接触して尿等を吸収しても、その機械的強度を容易に失うことがなく、しかも使用後に堆肥化の可能な家畜用敷料及びその製造方法を提供することをその課題とする。
【０００４】
【課題を解決するための手段】
本発明者らは、前記課題を解決すべく鋭意研究を重ねた結果、本発明を完成するに至った。
即ち、本発明によれば、吸水性紙片又は吸水性紙解繊物の表面に生分解性樹脂を付着させたものからなり、該樹脂の割合が該紙片又は該紙解繊物１００重量部当り１〜２０重量部の割合であることを特徴とする家畜用敷料が提供される。
また、本発明によれば、単位敷料の集合体からなり、該単位敷料は、吸水性紙片又は吸水性紙解繊物の表面に生分解性樹脂を付着させたものの接着体からなり、かつその重さが０．００３〜３ｇの範囲にあり、さらに該樹脂の割合が該紙片又は該紙解繊物１００重量部当り１〜２０重量部の割合であることを特徴とする家畜用敷料が提供される。
さらに、本発明によれば、吸水性紙片又は吸水性紙解繊物と生分解性樹脂との混合物を、該生分解性樹脂の溶融温度に加熱し、該樹脂を溶融して該樹脂の溶融液を該紙片又は該紙解繊物の表面に付着させた後冷却することからなり、該樹脂の割合が該紙片又は該紙解繊物１００重量部当り１〜２０重量部の割合であることを特徴とする家畜用敷料の製造方法が提供される。
さらにまた、本発明によれば、吸水性紙片又は吸水性紙解繊物と生分解性樹脂との混合物を、押出機を用いて該生分解性樹脂の溶融温度で混練押出しすることからなり、該樹脂の割合が該紙片又は該紙解繊物１００重量部当り１〜２０重量部の割合であることを特徴とする家畜用敷料の製造方法が提供される。
さらにまた、本発明によれば、生分解性樹脂を含む溶液又は懸濁液を吸水性紙片又は吸水性紙解繊物に吹き付けた後乾燥させることからなり、該樹脂の割合が該紙片又は該紙解繊物１００重量部当り１〜２０重量部の割合であることを特徴とする家畜用敷料の製造方法が提供される。
【０００５】
【発明の実施の形態】
本発明においては、敷料素材として、吸水性紙片又は吸水性紙解繊物を用いる。吸水性紙としては、古紙を一般的に用いることができるが、この場合、古紙には、古新聞、古本（電話帳、時刻表、マンガ本等）、使用済みダンボール等が包含される。このような古新聞や古紙等は、これを細断あるいは破砕して敷料素材として用いられる。
【０００６】
本発明で敷料素材として用いる紙片において、その形状、寸法は特に制約されないが、一般的には、その形状は、帯状、フレーク状、短冊状等であることができる。また、その寸法（長さ）は、５〜１００ｃｍ、好ましくは１０〜５０ｃｍ程度である。フレーク状の場合には、その一辺が５〜１５ｍｍであるのを好ましく用いることができる。
【０００７】
本発明で用いる敷料は、吸水性紙解繊物（綿状物）であることができる。本発明では、古紙ダンボール紙の解繊物を敷料素材として好ましく用いることができる。
【０００８】
本発明においては、前記敷料素材に対して、生分解性樹脂を付着させて敷料として用いる。この場合、生分解性樹脂としては、従来公知の各種のものを用いることができる。このようなものには、脂肪族ポリエステル（ポリブチレンサクシネート、ポリヒドロキシブチレート、ポリ乳酸、ポリカプロラクトン等、及びその共重合体）、ポリビニルアルコール、天然高分子（セルロース、デンプン、ゼラチン、カゼイン等）及びそれらのブレンド体等が包含される。
【０００９】
前記敷料素材に対する生分解性樹脂の付着方法は特に制約されず、各種の方法を用いることができる。このような方法には、該素材に対して樹脂の溶融液を混合する方法、水性樹脂分散液（乳化液、懸濁液等）や樹脂水溶液を混合又はスプレーして乾燥する方法、水性樹脂分散液や樹脂水溶液中に浸漬し、乾燥する方法等が包含される。
【００１０】
本発明による家畜用敷料の製造方法の好ましい１つの態様においては、吸水性紙片又は吸水性紙解繊物と生分解性樹脂とをドライブレンドした後、この混合物を該生分解性樹脂の溶融温度に加熱する。この加熱により、生分解性樹脂は溶融し、その紙片又は紙解繊物の表面に付着する。この場合、その加熱装置としては、オーブン等が用いられる。
次に、この生分解性樹脂の溶融液が付着した紙片又は紙解繊物は、これを冷却する。これにより、生分解性樹脂が表面に付着した紙片又は紙解繊物からなる敷料が得られる。
【００１１】
前記紙片又は紙解繊物と生分解性樹脂との混合物を加熱する場合、その混合物は静的状態に保持することもできるが、好ましくは動的状態に保持するのがよい。この場合、動的状態とは、その紙片又は紙解繊物が外力を受けて、その位置を変動させたり、表裏を反転させたり等して、樹脂溶融液が紙片又は紙解繊物全体に対して均一付着しやすいように動いている状態を意味する。この場合の外力には、回転羽根によるかきまぜ力や、上下方向及び／又は水平方向に振動する振動力等がある。
【００１２】
前記のようにして加熱処理して得られる生分解性樹脂の溶融液が付着した紙片又は紙解繊物（以下、単に加熱物とも言う）を冷却する場合、その加熱物は静的状態又は動的状態に保持することができる他、浮遊状態に保持することができる。この場合、浮遊状態とは、その加熱物が気流（例えば空気流）中で浮遊している状態を意味する。
【００１３】
前記のようにして紙片又は紙解繊物の表面に生分解性樹脂が付着した構造の敷料を得ることができるが、この場合、加熱物を冷却させて得られる敷料は、その紙片又は紙解繊物が一体に接着した少重量の接着体からなる単位敷料が多数集った集合体からなるものである。その単位敷料を構成する紙片又は紙解繊物の接着状態は、樹脂の割合等で異なるが、その少重量の接着体からなる単位敷料の重さは、通常、０．００３〜３ｇ、好ましくは０．０１〜２ｇ、より好ましくは０．０１〜１ｇである。
本発明の単位敷料の集合体からなる敷料は、断熱性に富み、全体的には嵩高いものであり、しかもその表面には生分解性樹脂が付着していることから、機械的強度にもすぐれている上、弾力性もあり、しかも、水を吸収してもスラリー状になりにくいものである。
【００１４】
本発明による家畜用敷料の製造方法の好ましい他の態様においては、吸水性紙片又は紙解繊物と生分解性樹脂とをドライブレンドした後、この混合物を押出機に入れ、ここで該生分解性樹脂を溶融させてその樹脂溶融液を紙片又は紙解繊物の表面に付着させた後、押出し、冷却する。これにより、生分解性樹脂が表面に付着した紙片又は紙解繊物からなる敷料が得られる。
このようにして得られる敷料も、前記の方法の場合と同様に、通常、単位敷料の集合体からなるもので、その単位敷料の重さは、通常、０．００３〜３ｇ、好ましくは０．０１〜２ｇ、より好ましくは０．０１〜１ｇである。
【００１５】
本発明による家畜用敷料の製造方法の好ましいさらに他の態様においては、静的又は動的状態にある吸水性紙片又は紙解繊物に対して、生分解性樹脂を含む溶液又は懸濁液を吹き付けた後乾燥する。これにより、生分解性樹脂が表面に付着した紙片又は紙解繊物を得る。
このようにして得られる敷料も、前記の方法の場合と同様に、通常、単位敷料の集合体からなるもので、その単位敷料の重さは、通常、０．００３〜３ｇ、好ましくは０．０１〜２ｇ、より好ましくは０．０１〜１ｇである。
【００１６】
敷料素材に対する生分解性樹脂の付着量は、該素材（紙片又は紙解繊物）１００重量部当り、１〜２０重量部、好ましくは２〜１５重量部、より好ましくは５〜１０重量部の割合である。この生分解性樹脂の付着量の調節は、その製造工程において、紙片又は紙解繊物に対して付着させる樹脂量により行うことができる。
生分解性樹脂の使用割合が前記範囲より低くなると、紙片又は紙解繊物に対して全体的に樹脂を均一付着させることがむつかしくなり、一方、前記範囲を超えると、経済的に不利になる上、敷料の吸水性が大きく低下するので好ましくない。
【００１７】
本発明の敷料は、その表面に生分解性樹脂を有することから、断熱性に優れるとともに、動物の糞尿等と接触時においてもその機械的強度を容易に失うことがなく、さらに、使用済み後においても容易に堆肥化することの可能なものである。
【００１８】
【実施例】
次に、本発明を実施例により更に詳細に説明する。
【００１９】
実施例１
古紙として、まんが本を破砕して得られた約８ｍｍ角（異形）のフレーク状のもの（平均重量：０．００４ｇ）を用いた。また、生分解性高分子として、島津製作所製ポリ乳酸、ラクティ１０１２を用いた。このものの融点（ＤＳＣのピーク温度）は１７４℃であった。このポリ乳酸のペレットをウイレー式粉砕機で粉砕し、約０．３ｍｍ角の粉末を得た。古紙フレーク８０重量％にポリ乳酸粉末を２０重量％の割合で機械的に混合した。この混合物を１９０℃のオーブン中で２０分間加熱した後に、室温に放冷したところ、古紙フレークの間にポリ乳酸が部分的に融着し、複数の古紙フレークどうしが部分的に接着した少重量（平均重量：約０．２ｇ）の接着体の集合体からなる嵩高な古紙／生分解性高分子複合体が得られた。
【００２０】
実施例２
実施例１において、古紙として、電話帳を粉砕して得られた約８ｍｍ角（異形）のフレーク状のもの（平均重量：０．００３ｇ）を用いた。生分解性高分子として、ポリブチレンサクシネート（昭和高分子製ビオノーレ１０２０）を用いた。このものの融点（ＤＳＣのピーク温度）は１１４℃であった。このビオノーレをウイレー式粉砕機で粉砕し、約０．５ｍｍ角の粉末を得た。古紙フレーク８５重量％にビオノーレ粉末を１５重量％の割合で機械的に混合した。この混合物を１５０℃のオーブン中で２０分間加熱した後に、室温に放冷したところ、古紙フレークの間にビオノーレが部分的に融着し、複数の古紙フレークどうしが部分的に接着した少重量（平均重量：約０．１ｇ）の接着体の集合体からなる嵩高な古紙／生分解性高分子複合体が得られた。
【００２１】
実施例３
実施例１において、古紙として、電話帳を粉砕して得られた約８ｍｍ角（異形）のフレーク状のもの（平均重量：０．００３ｇ）を用いた。生分解性高分子として、合成したポリブチレンサクシネートアジペート共重合体を用いた。このものの融点（ＤＳＣのピーク温度）は９５℃であった。この共重合体をウイレー式粉砕機で粉砕し、約０．５ｍｍ角の粉末を得た。古紙フレーク８５重量％に共重合体粉末を１５重量％の割合で機械的に混合した。この混合物を１５０℃のオーブン中で２０分間加熱した後に、室温に放冷したところ、古紙フレークの間に共重合体が部分的に融着し、複数の古紙フレークどうしが部分的に接着した少重量（平均重量：約０．１ｇ）の接着体の集合体からなる嵩高な古紙／生分解性高分子複合体が得られた。
【００２２】
実施例４
実施例１において、古紙として、ＯＡ廃紙を粉砕し得られた約５ｍｍ角（異形）のフレーク状のものを（平均重量：０．００２ｇ）用いた。生分解性高分子として、ＵＣＣ製ポリ（ε−カプロラクトン）、Ｔｏｎｅ Ｐ７９７を用いた。このものの融点（ＤＳＣのピーク温度）は６４℃であった。このポリ（ε−カプロラクトン）をウイレー式粉砕機で粉砕し、約０．５ｍｍ角の粉末を得た。古紙フレーク９０重量％にポリ（ε−カプロラクトン）粉末を１０重量％の割合で機械的に混合した。この混合物を１５０℃のオーブン中で２０分間加熱した後に、室温に放冷したところ、古紙フレークの間にポリ（ε−カプロラクトン）が部分的に融着し、複数の古紙フレークどうしが部分的に接着した少重量（平均重量：約０．１ｇ）の接着体の集合体からなる嵩高な古紙／生分解性高分子複合体が得られた。
【００２３】
実施例５
実施例１〜４において得られた古紙／生分解性高分子複合体１００重量部に対して、水３００重量部を散布した後、かき混ぜて放置したのちの複合体の性質と組成の関係を表１示した。また、比較のために、古紙フレークのみを用いた場合の結果を比較例として表１に示した。
【００２４】
【表１】
【発明の効果】
本発明の敷料は、牛、豚、馬、鶏等の家畜用敷料として有利に用いることができる。また、その使用後には、これを容易に堆肥化することができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a livestock bedding and a method for producing the same.
[0002]
[Prior art]
Up until now, rice straw has been mainly used as livestock litter, but rice straw should be obtained in order to be shredded and sown into rice fields due to the spread of rice cultivation using combine. There is a strong demand for the development of rice straw litter substitutes that have good heat insulation and absorbability of animal urine and the like.
Japanese Patent Application Laid-Open No. 8-256621 discloses a bedding made of waste paper with good water absorption, but when used as a bedding, this absorbs urine and the like to increase its mechanical strength. It was still not satisfactory because it was easily lost.
[0003]
[Problems to be solved by the invention]
The present invention provides a livestock litter which can be composted after use without easily losing its mechanical strength even if it contacts urine of animals and absorbs urine, etc., and a method for producing the same. That is the issue.
[0004]
[Means for Solving the Problems]
As a result of intensive studies to solve the above problems, the present inventors have completed the present invention.
That is, according to the present invention, a biodegradable resin is adhered to the surface of a water-absorbing paper piece or a water-absorbing paper defibrated material, and the ratio of the resin is 100 parts by weight of the paper piece or the paper defibrated material. A livestock litter characterized by having a ratio of 1 to 20 parts by weight is provided.
Further, according to the present invention, the unit covering is composed of an assembly of unit coverings, and the unit covering is composed of an adhesive made by adhering a biodegradable resin to the surface of a water absorbent paper piece or a water absorbent paper defibrated material, and A livestock litter characterized by having a weight in the range of 0.003 to 3 g and a ratio of the resin of 1 to 20 parts by weight per 100 parts by weight of the paper piece or the paper defibrated material. Is done.
Further, according to the present invention, a water absorbent paper piece or a mixture of a water absorbent paper defibrated material and a biodegradable resin is heated to a melting temperature of the biodegradable resin, and the resin is melted to melt the resin. The liquid is attached to the surface of the paper piece or the paper defibrated material and then cooled, and the ratio of the resin is 1 to 20 parts by weight per 100 parts by weight of the paper piece or the paper defibrated material. A method for producing a livestock bedding is provided.
Furthermore, according to the present invention, the water-absorbent paper piece or a mixture of the water-absorbent paper defibrated material and the biodegradable resin is kneaded and extruded at the melting temperature of the biodegradable resin using an extruder. There is provided a method for producing a livestock bedding characterized in that the ratio of the resin is 1 to 20 parts by weight per 100 parts by weight of the paper piece or the paper defibrated material.
Furthermore, according to the present invention, the solution or suspension containing the biodegradable resin is sprayed on a water absorbent paper piece or a water absorbent paper defibrated material and then dried, and the ratio of the resin is the paper piece or the There is provided a method for producing a livestock litter characterized by having a ratio of 1 to 20 parts by weight per 100 parts by weight of a paper defibrated material.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
In the present invention, a water absorbent paper piece or a water absorbent paper defibrated material is used as a bedding material. As the water-absorbent paper, generally used paper can be used. In this case, the used paper includes used newspapers, used books (phone book, timetable, comic book, etc.), used cardboard and the like. Such old newspapers and used papers are shredded or crushed and used as a raw material.
[0006]
The shape and size of the paper piece used as a bedding material in the present invention are not particularly limited, but in general, the shape can be a strip shape, a flake shape, a strip shape, or the like. Moreover, the dimension (length) is 5-100 cm, Preferably it is about 10-50 cm. In the case of flakes, it is preferable to use one side of 5 to 15 mm.
[0007]
The bedding used in the present invention can be a water absorbent paper defibrated material (cotton-like material). In the present invention, the defibrated material of used paper cardboard can be preferably used as a bedding material.
[0008]
In the present invention, a biodegradable resin is attached to the bedding material and used as a bedding. In this case, various conventionally known biodegradable resins can be used. Such things, aliphatic polyester Le (polybutylene succinate, polyhydroxybutyrate, polylactic acid, polycaprolactone and the like, and copolymers thereof), polyvinyl alcohol, natural polymers (cellulose, starch, gelatin, casein Etc.) and blends thereof.
[0009]
The method for attaching the biodegradable resin to the bedding material is not particularly limited, and various methods can be used. Such methods include a method of mixing a molten resin into the material, a method of mixing or spraying an aqueous resin dispersion (emulsified liquid, suspension, etc.) and an aqueous resin solution, and an aqueous resin dispersion. A method of immersing in a liquid or an aqueous resin solution and drying is included.
[0010]
In a preferred embodiment of the method for producing a livestock litter according to the present invention, after water-absorbing paper pieces or water-absorbing paper defibrated material and a biodegradable resin are dry blended, the mixture is melted at the melting temperature of the biodegradable resin. Heat to. By this heating, the biodegradable resin melts and adheres to the surface of the paper piece or paper defibrated material. In this case, an oven or the like is used as the heating device.
Next, the paper piece or paper defibrated material to which the biodegradable resin melt is attached is cooled. Thereby, the litter which consists of a paper piece or paper defibrated material which biodegradable resin adhered to the surface is obtained.
[0011]
When a mixture of the paper piece or paper defibrated material and the biodegradable resin is heated, the mixture can be kept in a static state, but preferably in a dynamic state. In this case, the dynamic state means that the paper piece or paper defibrated material is subjected to external force, the position thereof is changed, the front and back are reversed, etc., and the resin melt is spread over the paper piece or paper defibrated material. On the other hand, it means a state of moving so as to easily adhere uniformly. The external force in this case includes a stirring force by a rotating blade, a vibration force that vibrates in the vertical direction and / or the horizontal direction, and the like.
[0012]
When cooling a piece of paper or a paper defibrated material (hereinafter also simply referred to as a heated product) to which a melt of a biodegradable resin obtained by heat treatment as described above is attached, the heated product is static or dynamic. In addition to being able to be held in a target state, it can be held in a floating state. In this case, the floating state means a state in which the heated object is floating in an air flow (for example, an air flow).
[0013]
As described above, a bedding having a structure in which a biodegradable resin is adhered to the surface of a piece of paper or paper defibrated material can be obtained. In this case, the bedding obtained by cooling the heated material is the piece of paper or paper disintegrated. It consists of an aggregate in which a large number of unit rugs made of a small weight bonded body in which fine objects are bonded together. The adhesive state of the paper piece or paper defibrated material constituting the unit bedding varies depending on the ratio of the resin, etc., but the weight of the unit bedding made of the small weight adhesive is usually 0.003 to 3 g, preferably 0.01 to 2 g, more preferably 0.01 to 1 g.
The rug composed of the aggregate of unit rugs of the present invention is rich in heat insulating properties and is bulky as a whole, and because the biodegradable resin is attached to the surface thereof, the mechanical strength is also improved. In addition to being excellent, it has elasticity, and even if it absorbs water, it is difficult to form a slurry.
[0014]
In another preferred embodiment of the method for producing livestock litter according to the present invention, after water-absorbing paper pieces or paper defibrated material and biodegradable resin are dry blended, this mixture is put into an extruder, where the biodegradation is carried out. The resin melt is melted and the resin melt is adhered to the surface of the paper piece or paper defibrated material, and then extruded and cooled. Thereby, the litter which consists of a paper piece or paper defibrated material which biodegradable resin adhered to the surface is obtained.
Similarly to the case of the above-mentioned method, the thus obtained bedding is usually composed of an aggregate of unit bedding, and the weight of the unit bedding is usually 0.003 to 3 g, preferably 0.00. 01 to 2 g, more preferably 0.01 to 1 g.
[0015]
In still another preferred embodiment of the method for producing livestock litter according to the present invention, a solution or suspension containing a biodegradable resin is applied to a water-absorbent paper piece or paper defibrated material in a static or dynamic state. Dry after spraying. Thereby, a piece of paper or a paper defibrated material with the biodegradable resin attached to the surface is obtained.
Similarly to the case of the above-mentioned method, the thus obtained bedding is usually composed of an aggregate of unit bedding, and the weight of the unit bedding is usually 0.003 to 3 g, preferably 0.00. 01 to 2 g, more preferably 0.01 to 1 g.
[0016]
The amount of the biodegradable resin attached to the bedding material is 1 to 20 parts by weight, preferably 2 to 15 parts by weight, more preferably 5 to 10 parts by weight per 100 parts by weight of the material (paper piece or paper defibrated material). It is a ratio. The amount of biodegradable resin attached can be adjusted by the amount of resin attached to a piece of paper or paper defibrated material in the manufacturing process.
If the use ratio of the biodegradable resin is lower than the above range, it becomes difficult to uniformly adhere the resin to the whole piece of paper or paper defibrated material, while if it exceeds the above range, it is economically disadvantageous. In addition, the water absorption of the litter is greatly reduced, which is not preferable.
[0017]
Since the litter of the present invention has a biodegradable resin on its surface, it has excellent heat insulation properties and does not easily lose its mechanical strength even when in contact with animal manure, etc. Can be easily composted.
[0018]
【Example】
Next, the present invention will be described in more detail with reference to examples.
[0019]
Example 1
As the used paper, flakes (average weight: 0.004 g) of about 8 mm square (an irregular shape) obtained by crushing a manga book were used. Further, as a biodegradable polymer, Shimadzu polylactic acid, Lacty 1012 was used. The melting point (DSC peak temperature) of this product was 174 ° C. The polylactic acid pellets were pulverized with a Wiley pulverizer to obtain about 0.3 mm square powder. Polylactic acid powder was mechanically mixed with 80% by weight of waste paper flakes at a ratio of 20% by weight. This mixture was heated in an oven at 190 ° C. for 20 minutes and then allowed to cool to room temperature. As a result, polylactic acid was partially fused between the used paper flakes, and a plurality of used paper flakes were partially bonded to each other. A bulky used paper / biodegradable polymer composite consisting of an aggregate of adhesive bodies (average weight: about 0.2 g) was obtained.
[0020]
Example 2
In Example 1, as the used paper, flakes (average weight: 0.003 g) of about 8 mm square (unshaped) obtained by pulverizing a phone book were used. As the biodegradable polymer, polybutylene succinate (Bionore 1020 manufactured by Showa Polymer) was used. The melting point (DSC peak temperature) of this product was 114 ° C. This bionore was pulverized with a wheely pulverizer to obtain a powder of about 0.5 mm square. Vionole powder was mechanically mixed in 85% by weight of waste paper flakes at a ratio of 15% by weight. The mixture was heated in an oven at 150 ° C. for 20 minutes, and then allowed to cool to room temperature. As a result, the violore was partially fused between the used paper flakes, and a plurality of used paper flakes were partially adhered to each other. A bulky waste paper / biodegradable polymer composite consisting of an aggregate of adhesives with an average weight of about 0.1 g was obtained.
[0021]
Example 3
In Example 1, as the used paper, flakes (average weight: 0.003 g) of about 8 mm square (unshaped) obtained by pulverizing a phone book were used. The synthesized polybutylene succinate adipate copolymer was used as the biodegradable polymer. The melting point (DSC peak temperature) of this product was 95 ° C. This copolymer was pulverized by a wheely pulverizer to obtain a powder of about 0.5 mm square. The copolymer powder was mechanically mixed at a ratio of 15% by weight with 85% by weight of the waste paper flakes. The mixture was heated in an oven at 150 ° C. for 20 minutes and then allowed to cool to room temperature. As a result, the copolymer was partially fused between the used paper flakes, and a plurality of used paper flakes were partially adhered to each other. A bulky waste paper / biodegradable polymer composite consisting of an aggregate of weight (average weight: about 0.1 g) was obtained.
[0022]
Example 4
In Example 1, used paper (average weight: 0.002 g) of about 5 mm square (irregular shape) flakes obtained by pulverizing OA waste paper was used. As the biodegradable polymer, UCC poly (ε-caprolactone) and Tone P797 were used. The melting point (DSC peak temperature) of this product was 64 ° C. This poly (ε-caprolactone) was pulverized with a Wiley pulverizer to obtain about 0.5 mm square powder. Poly (ε-caprolactone) powder was mechanically mixed at a ratio of 10% by weight with 90% by weight of waste paper flakes. When this mixture was heated in an oven at 150 ° C. for 20 minutes and then allowed to cool to room temperature, poly (ε-caprolactone) was partially fused between the waste paper flakes, and the plurality of waste paper flakes were partially A bulky used paper / biodegradable polymer composite composed of an aggregate of adhered small weight (average weight: about 0.1 g) was obtained.
[0023]
Example 5
The relationship between the properties and the composition of the composite after spraying 300 parts by weight of water to 100 parts by weight of the waste paper / biodegradable polymer composite obtained in Examples 1 to 4 and stirring the mixture is shown. 1 shown. For comparison, Table 1 shows the results of using only waste paper flakes as comparative examples.
[0024]
[Table 1]
【The invention's effect】
The litter of the present invention can be advantageously used as a litter for livestock such as cattle, pigs, horses and chickens. In addition, it can be easily composted after use.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000185809A JP3766863B2 (en) | 2000-06-21 | 2000-06-21 | Litter for livestock and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000185809A JP3766863B2 (en) | 2000-06-21 | 2000-06-21 | Litter for livestock and its manufacturing method |
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| Publication Number | Publication Date |
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| JP2002000101A JP2002000101A (en) | 2002-01-08 |
| JP3766863B2 true JP3766863B2 (en) | 2006-04-19 |
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| JP2000185809A Expired - Lifetime JP3766863B2 (en) | 2000-06-21 | 2000-06-21 | Litter for livestock and its manufacturing method |
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Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0739265A (en) * | 1993-07-30 | 1995-02-10 | Suzuki Sogyo Co Ltd | Toilet material for pet |
| JP3408340B2 (en) * | 1994-11-25 | 2003-05-19 | 信越化学工業株式会社 | Pet urination agent |
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2000
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