JP3007880B1 - Method for producing molding composition and used paper pellet used therefor - Google Patents
Method for producing molding composition and used paper pellet used thereforInfo
- Publication number
- JP3007880B1 JP3007880B1 JP22673998A JP22673998A JP3007880B1 JP 3007880 B1 JP3007880 B1 JP 3007880B1 JP 22673998 A JP22673998 A JP 22673998A JP 22673998 A JP22673998 A JP 22673998A JP 3007880 B1 JP3007880 B1 JP 3007880B1
- Authority
- JP
- Japan
- Prior art keywords
- waste paper
- resin
- pellets
- paper
- crushed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
【要約】
【課題】解砕した古紙の嵩を小さくして生産性を向上さ
せるとともに、混練する樹脂とのなじみ性を向上させる
成形用組成物の製造方法およびそれに用いる繊維ペレッ
トを提供する。
【解決手段】解砕された古紙にポリオレフィンエラスト
マーを重量比で２〜１０％混合し、混練して造粒するこ
とにより古紙ペレットとし、この古紙ペレットに、組成
物の樹脂含有率が重量比で３０〜７０％となるよう熱可
塑性樹脂ペレットを混合し、この混合物を加熱混練した
のち造粒してペレット化するようにした。The present invention provides a method for producing a molding composition for improving the productivity by reducing the bulk of crushed waste paper and improving the compatibility with a resin to be kneaded, and a fiber pellet used therefor. A crushed waste paper is mixed with a polyolefin elastomer at a weight ratio of 2 to 10%, kneaded and granulated to obtain a waste paper pellet. The resin content of the waste paper pellet is determined by weight. Thermoplastic resin pellets were mixed so as to be 30 to 70%, and the mixture was heated and kneaded, then granulated and pelletized.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、古紙を原料とした
繊維と熱可塑性樹脂とを混練して得られる成形用組成物
の製造方法およびそれに用いる古紙ペレットに関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a molding composition obtained by kneading a fiber made of waste paper and a thermoplastic resin, and a waste paper pellet used for the composition.
【０００２】[0002]
【従来の技術】従来から、古紙をリサイクルして再利用
する方法として、古紙を粉砕し、熱可塑性樹脂と混合し
た複合樹脂組成物とすることが行われている。このよう
な複合樹脂組成物の製法として、たとえば、特開平５−
３２０３６７号に開示された方法がある。この方法は、
解繊した古紙にポリプロピレンと変性ポリプロピレンと
の混合樹脂を溶融含浸させことにより、複合樹脂組成物
を得るものである。2. Description of the Related Art Conventionally, as a method of recycling and recycling used paper, a method of pulverizing used paper and mixing it with a thermoplastic resin has been used. As a method for producing such a composite resin composition, for example, Japanese Patent Application Laid-Open
There is a method disclosed in Japanese Patent No. 320367. This method
A composite resin composition is obtained by melt-impregnating a defibrated waste paper with a mixed resin of polypropylene and modified polypropylene.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記方
法では、解繊された古紙を直接混練装置に供給すること
が行われ、繊維状の古紙が非常に嵩だかいため、供給速
度に限界があり、生産性が悪いという問題がある。した
がって、あらかじめ解繊した古紙の嵩を圧縮機で小さく
してから混練装置に供給する必要がある。また、解繊し
た状態の古紙は、嵩だかいうえ舞散りやすく、保管する
さいに極めて広いスペースを必要とするだけでなく、移
送等の取り扱いも困難である。しかも、重量測定の精度
も悪くなりがちで、樹脂との混合比率もばらつきやすく
品質が安定しないという問題もある。さらに、機械的強
度を確保するためにポリプロピレン系の樹脂のみが用い
られ、他の樹脂を使用できないという問題もある。した
がって、他の樹脂が混じるおそれの多い再生樹脂はほと
んど使用できないという問題もある。However, in the above method, the defibrated waste paper is directly supplied to the kneading device, and the supply speed is limited because the fibrous waste paper is very bulky. However, there is a problem that productivity is low. Therefore, it is necessary to reduce the bulk of the used paper that has been defibrated in advance by a compressor before supplying it to the kneading device. Moreover, the used paper in the defibrated state is bulky and easily scattered, and not only requires an extremely large space for storage, but also it is difficult to handle such as transportation. In addition, there is a problem that the accuracy of the weight measurement tends to be deteriorated, and the mixing ratio with the resin tends to vary, so that the quality is not stable. Further, there is a problem that only a polypropylene-based resin is used to secure mechanical strength, and other resins cannot be used. Therefore, there is also a problem that a recycled resin which is likely to be mixed with another resin can hardly be used.
【０００４】本発明は、このような事情に鑑みなされた
もので、解砕した古紙の嵩を小さくして生産性を向上さ
せるとともに、混練する樹脂とのなじみ性を向上させる
成形用組成物の製造方法およびそれに用いる古紙ペレッ
トの提供をその目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and a molding composition for improving the productivity by reducing the volume of the crushed waste paper and improving the compatibility with the resin to be kneaded. It is an object of the present invention to provide a manufacturing method and used paper pellets used for the method.
【０００５】[0005]
【課題を解決するための手段】上記の目的を達成するた
め、本発明の成形用組成物の製造方法は、解砕された古
紙にポリオレフィンエラストマーを重量比で２〜１０％
混合し、混練して造粒することにより古紙ペレットと
し、この古紙ペレットに、組成物の樹脂含有率が重量比
で３０〜７０％となるよう熱可塑性樹脂ペレットを混合
し、この混合物を加熱混練したのち造粒してペレット化
することを要旨とする。In order to achieve the above-mentioned object, a method for producing a molding composition of the present invention comprises the steps of:
Mix, knead and granulate to obtain waste paper pellets. To this waste paper pellet, thermoplastic resin pellets are mixed so that the resin content of the composition becomes 30 to 70% by weight, and this mixture is heated and kneaded. After that, the gist is to granulate and pelletize.
【０００６】また、本発明の古紙ペレットは、解砕され
た古紙とポリオレフィンエラストマーとからなり、上記
ポリオレフィンエラストマーが重量比で２〜１０％混合
され、この混合物が混練され造粒されてなることを要旨
とする。The waste paper pellets of the present invention are composed of crushed waste paper and a polyolefin elastomer. The polyolefin elastomer is mixed in a weight ratio of 2 to 10%, and the mixture is kneaded and granulated. The gist is that
【０００７】すなわち、本発明の成形用組成物の製造方
法は、解砕された古紙にポリオレフィンエラストマーを
重量比で２〜１０％混合し、混練して造粒することによ
り古紙ペレットとし、この古紙ペレットに熱可塑性樹脂
ペレットを混合して加熱混練したのち造粒してペレット
化する。このように、解砕された古紙を一旦ポリオレフ
ィンエラストマーを混合して混練し、造粒して古紙ペレ
ットとするため、繊維状の古紙の嵩がおよそ１０分の１
から３０分の１程度にまで減少する。したがって、古紙
を装置に供給する速度が早くなり、生産性が極めて向上
する。また、ペレット状であるため、解砕した古紙を保
管する場合にも場所をとらず、移送等の取り扱いも容易
になる。さらに、重量測定の精度も良くなるため、熱可
塑性樹脂との混合比率も安定して品質が向上する。しか
も、上記古紙ペレットでは、ＡＢＳ樹脂，スチロール樹
脂，ポリエチレン樹脂等各種の樹脂と混じりやすいポリ
オレフィンエラストマーが繊維の周囲にコーティングさ
れるため、繊維と熱可塑性樹脂材料とのなじみ性が格段
に向上する。したがって、各種の樹脂が混じる割合が多
い再生樹脂等であっても成形品の強度が確保され、問題
なく使用できるようになる。That is, in the method for producing a molding composition of the present invention, a waste paper pellet is obtained by mixing a polyolefin elastomer in a weight ratio of 2 to 10% with a crushed waste paper, kneading and granulating the waste paper. The pellets are mixed with thermoplastic resin pellets, heated and kneaded, and then granulated to form pellets. In this way, the crushed waste paper is once mixed with a polyolefin elastomer, kneaded, and granulated to obtain waste paper pellets. Therefore, the bulk of the fibrous waste paper is reduced to about 1/10.
To about 1/30. Therefore, the speed of supplying the used paper to the apparatus is increased, and the productivity is extremely improved. In addition, since it is in the form of pellets, it does not take up much space when storing the used paper that has been disintegrated, and handling such as transportation is easy. Further, since the accuracy of the weight measurement is improved, the mixing ratio with the thermoplastic resin is also stabilized and the quality is improved. In addition, in the used paper pellets, a polyolefin elastomer which is easily mixed with various resins such as an ABS resin, a styrene resin, and a polyethylene resin is coated around the fibers, so that the compatibility between the fibers and the thermoplastic resin material is remarkably improved. Therefore, even if it is a recycled resin or the like in which various resins are mixed at a high ratio, the strength of the molded product is ensured and the molded product can be used without any problem.
【０００８】また、本発明の古紙ペレットは、ポリオレ
フィンエラストマーが混合され、混練されることにより
造粒されてなる。このため、繊維状の古紙の嵩がおよそ
１０分の１から３０分の１程度にまで減少し、生産性が
極めて向上する。また、ペレット状であるため、保管や
移送等の際に取り扱いやすい。さらに、重量測定の精度
も良くなり、熱可塑性樹脂との混合比率も安定する。し
かも、ポリオレフィンエラストマーが繊維の周囲にコー
ティングされるため、繊維と各種樹脂とのなじみ性が向
上し、再生樹脂等の使用も可能になる。[0008] The waste paper pellets of the present invention are formed by mixing and kneading a polyolefin elastomer. For this reason, the bulk of the fibrous waste paper is reduced from about 1/10 to about 1/30, and the productivity is extremely improved. In addition, since it is in the form of pellets, it is easy to handle during storage and transfer. Further, the accuracy of the weight measurement is improved, and the mixing ratio with the thermoplastic resin is stabilized. In addition, since the polyolefin elastomer is coated around the fiber, the compatibility between the fiber and various resins is improved, and the use of a recycled resin or the like becomes possible.
【０００９】本発明において、古紙が、平均太さ０．０
１〜０．１ｍｍ，平均長さ０．１〜２．５ｍｍに解砕さ
れている場合には、解砕された古紙の繊維が熱可塑性樹
脂材料と均一に混合され、成形品の機械的強度が確保さ
れる。In the present invention, the waste paper has an average thickness of 0.0
When the paper is crushed to 1 to 0.1 mm and the average length is 0.1 to 2.5 mm, the fibers of the crushed waste paper are uniformly mixed with the thermoplastic resin material, and the mechanical strength of the molded product is obtained. Is secured.
【００１０】[0010]
【発明の実施の形態】つぎに、本発明の実施の形態を詳
しく説明する。Next, embodiments of the present invention will be described in detail.
【００１１】本発明の成形用組成物の製造方法では、ま
ず、古紙を細かく解砕する。In the method for producing a molding composition according to the present invention, first, waste paper is finely crushed.
【００１２】上記古紙としては、特に限定するものでは
なく、各種の古紙を用いることができる。例えば、ＯＡ
関連の古紙，ダンボール，新聞，雑誌，トムソン加工の
破材，樹脂原料ペレットの袋，使用済みの乗車券・馬券
等の磁気粉末が付着したもの等があげられる。The used paper is not particularly limited, and various kinds of used paper can be used. For example, OA
Related papers, corrugated cardboard, newspapers, magazines, Thomson-processed broken materials, resin material pellet bags, used tickets, betting tickets, and the like to which magnetic powder has adhered can be used.
【００１３】上記古紙を解砕する装置は、高速シュレッ
ダーとジェットミルの組み合わせ，紙おむつ用の開綿状
パルプの粉砕機，ターボカッター等、各種のものが用い
られる。この場合、粗粉砕を行った後、あらためてこま
かく解砕するのが好ましい。As the apparatus for crushing the used paper, various apparatuses such as a combination of a high-speed shredder and a jet mill, a pulp crusher for open pulp for disposable diapers, and a turbo cutter are used. In this case, it is preferable that after the coarse pulverization is performed, the pulverization is performed again.
【００１４】古紙は、平均太さ０．０１〜０．１ｍｍ，
平均長さ０．１〜２．５ｍｍ程度の繊維状になるまで解
砕するのが好ましい。平均太さ０．０１ｍｍ未満もしく
は平均長さ０．１ｍｍ未満にするのは、細かすぎて解砕
に時間がかかり、平均太さ０．１ｍｍもしくは平均長さ
２．５ｍｍを超えると、熱可塑性樹脂材料との混合が十
分に行われないほか、成形品の機械的強度も低下するか
らである。The used paper has an average thickness of 0.01 to 0.1 mm,
It is preferable to pulverize the mixture into a fiber having an average length of about 0.1 to 2.5 mm. If the average thickness is less than 0.01 mm or the average length is less than 0.1 mm, it takes too long to disintegrate, and if the average thickness exceeds 0.1 mm or the average length 2.5 mm, the thermoplastic resin is used. This is because the mixing with the material is not sufficiently performed, and the mechanical strength of the molded article is reduced.
【００１５】ついで、上記解砕された繊維状の古紙にポ
リオレフィンエラストマーを重量比で２〜１０％混合
し、混練して造粒することにより古紙ペレットとする。Then, a polyolefin elastomer is mixed with the crushed fibrous waste paper in a weight ratio of 2 to 10%, kneaded and granulated to obtain waste paper pellets.
【００１６】上記ポリオレフィンエラストマーとして
は、高密度ポリエチレン，低密度ポリエチレン，ポリプ
ロピレン，ポリブデン，ポリ−４−メチルペンテン−
１，エチレンとα−オレフィンの共重合体，プロピレン
とα−オレフィンの共重合体などのオリゴマー類、エチ
レン・オクテン・コーポリマー（商品名「エンゲー
ジ」：ダウケミカル社）等のエラストマーがあげられ
る。これらは、単独でもしくは併せて用いられる。Examples of the polyolefin elastomer include high-density polyethylene, low-density polyethylene, polypropylene, polybutene, and poly-4-methylpentene.
Oligomers such as 1, copolymers of ethylene and α-olefins, copolymers of propylene and α-olefins, and elastomers such as ethylene octene copolymer (trade name “Engage”: Dow Chemical Company). These are used alone or in combination.
【００１７】上記ポリオレフィンエラストマーの古紙に
対する混合率は、重量比で２〜１０％が好ましい。２％
未満では、嵩を減少させたり樹脂とのなじみ性を向上さ
せる効果に乏しく、１０％を超えると、生産性は向上す
るものの、オレフィン系以外の樹脂と混合する場合にか
えって成形品の強度が低下するからである。The mixing ratio of the polyolefin elastomer to waste paper is preferably 2 to 10% by weight. 2%
If it is less than 10%, the effect of reducing the bulk or improving the compatibility with the resin is poor. If it exceeds 10%, the productivity is improved, but the strength of the molded product is reduced when mixed with a resin other than olefin resin. Because you do.
【００１８】混練装置は、ヘンシェルミキサーで混合し
て押出機で混練するか、ニーダールーダーのいずれでも
よいし、高混練タイプの二軸押出機も可能である。ま
た、他の方式でもよい。混練および造粒することによ
り、２〜４ｍｍ程度の古紙ペレットが得られる。上記ポ
リオレフィンエラストマーと古紙との混練温度は、８０
〜１１０℃が好ましい。８０℃未満では、混練の際の混
練機の負荷が大きくなりすぎ、主軸（スクリュー等）を
破損するおそれがあるからであり、１１０℃を超える
と、ポリオレフィンエラストマーが完全に溶融してしま
うため、かえって古紙との練りが悪くなるからである。The kneading apparatus may be any of a kneader-ruder or a kneader-ruder mixing with a Henschel mixer and kneading with an extruder, and a twin-screw extruder of high kneading type is also possible. Further, another method may be used. By kneading and granulating, waste paper pellets of about 2 to 4 mm are obtained. The kneading temperature of the polyolefin elastomer and used paper is 80
~ 110 ° C is preferred. If the temperature is lower than 80 ° C., the load of the kneader during kneading becomes too large, and the main shaft (eg, screw) may be damaged. If the temperature exceeds 110 ° C., the polyolefin elastomer is completely melted. This is because the kneading with the used paper becomes worse.
【００１９】つぎに、上記古紙ペレットに、組成物の樹
脂含有率が重量比で３０〜７０％となるよう熱可塑性樹
脂ペレットを混合し、この混合物を加熱混練したのち造
粒してペレット化することにより成形用組成物が得られ
る。Next, thermoplastic resin pellets are mixed with the waste paper pellets so that the resin content of the composition is 30 to 70% by weight, and the mixture is heated and kneaded, then granulated and pelletized. Thereby, a molding composition is obtained.
【００２０】上記熱可塑性樹脂としては、例えば、ポリ
プロピレン，ＡＢＳ樹脂，スチロール樹脂，ポリエチレ
ン樹脂，ポリアセタール，ポリカーボネート等、ポリオ
レフィンエラストマーと容易に混合するものが用いられ
る。熱可塑性樹脂ペレットの混合率は、組成物の樹脂含
有率が重量比で３０〜７０％となる範囲が好ましい。組
成物の樹脂含有率が３０％以下では、繊維の閉める比率
が多すぎて成形品の強度が低下し、７０％を超えると、
成形品を燃焼させたときの発生熱量が高くなり、処分が
困難になるからである。また、上記樹脂材料からなるフ
ィルム，シート粕，成形不良品等を粉砕機で２〜４ｍｍ
程度に粉砕した再生樹脂も好適に用いられる。As the above-mentioned thermoplastic resin, for example, those easily mixed with a polyolefin elastomer, such as polypropylene, ABS resin, styrene resin, polyethylene resin, polyacetal, and polycarbonate are used. The mixing ratio of the thermoplastic resin pellets is preferably in a range where the resin content of the composition is 30 to 70% by weight. When the resin content of the composition is 30% or less, the ratio of closing the fibers is too large, and the strength of the molded article is reduced.
This is because the amount of heat generated when the molded article is burned increases, and disposal becomes difficult. In addition, a film made of the above resin material, sheet residue, defective molded product, etc. are crushed with a crusher by 2 to 4 mm.
Regenerated resin that has been pulverized to an appropriate degree is also suitably used.
【００２１】古紙ペレットと熱可塑性樹脂との混合物の
加熱混練は、押出造粒機等で行われる。押出造粒機は、
Ｌ／Ｄ（ピッチ）が３８以上のスクリューで、圧縮比を
２．５として行うのが好ましい。加熱混練の温度は、１
６０〜１９０℃で行うのが好ましい。１６０℃未満で
は、混練に時間がかかり、１９０℃を超えると繊維が炭
化するおそれがあるからである。造粒は、古紙の保熱に
より繊維が焦げるおそれがあるため、水中押出しによっ
て行うのが好ましい。The heating and kneading of the mixture of the waste paper pellets and the thermoplastic resin is performed by an extrusion granulator or the like. Extrusion granulator,
It is preferable to use a screw having an L / D (pitch) of 38 or more and a compression ratio of 2.5. The heating and kneading temperature is 1
It is preferably performed at 60 to 190 ° C. If the temperature is lower than 160 ° C., it takes a long time to knead, and if it exceeds 190 ° C., the fiber may be carbonized. The granulation is preferably performed by underwater extrusion because the fibers may be scorched by the heat retention of the used paper.
【００２２】上記のようにして得られた成形用組成物
は、通常の射出成形機等で各種の形状に成形することが
できる。成形前に、繊維に吸着した水分を除去するた
め、ホッパードライヤーもしくは箱型乾燥機等で８０〜
１００℃程度で約３〜４時間乾燥させるのが好ましい。
また、成形温度は、繊維の炭化を防止するため、１７０
〜１９０℃程度の比較的低温に設定するのが好ましい。
それ以外は、通常の樹脂材料の成形と同様にして成形す
ることができる。The molding composition obtained as described above can be molded into various shapes by a usual injection molding machine or the like. Before molding, to remove moisture adsorbed on the fiber, use a hopper drier or box type drier etc.
It is preferable to dry at about 100 ° C. for about 3 to 4 hours.
The molding temperature is set at 170 to prevent carbonization of the fiber.
It is preferable to set the temperature to a relatively low temperature of about 190 ° C.
Otherwise, it can be molded in the same manner as the molding of a normal resin material.
【００２３】このようにして得られた成形品は、機械的
強度が良好で、燃焼させたときの発生熱量が少なく、一
般の可燃物と同様の焼却処理が可能である。The molded article thus obtained has good mechanical strength, generates a small amount of heat when burned, and can be incinerated in the same manner as general combustibles.
【００２４】上記成形用組成物の製造方法によれば、解
砕された古紙を一旦古紙ペレットとするため、繊維状の
古紙の嵩がおよそ１０分の１から３０分の１程度にまで
減少する。したがって、混練装置への古紙の供給速度が
早くなる。また、解砕した古紙の保管や移送等の取り扱
いも容易になる。さらに、重量測定の精度も向上するた
め、熱可塑性樹脂との混合比率も安定して品質が向上す
る。しかも、上記古紙ペレットでは、各種の樹脂と混じ
りやすいポリオレフィンエラストマーが繊維状の古紙の
周囲にコーティングされるため、繊維と熱可塑性樹脂材
料とのなじみ性が格段に向上する。According to the method for producing the molding composition, since the crushed waste paper is once made into waste paper pellets, the bulk of the fibrous waste paper is reduced from about 1/10 to about 1/30. . Therefore, the supply speed of the used paper to the kneading device is increased. In addition, handling such as storage and transfer of the disintegrated waste paper becomes easy. Further, since the accuracy of the weight measurement is also improved, the mixing ratio with the thermoplastic resin is also stabilized and the quality is improved. Moreover, in the used paper pellets, a polyolefin elastomer which is easily mixed with various resins is coated around the fibrous used paper, so that the compatibility between the fibers and the thermoplastic resin material is remarkably improved.
【００２５】つぎに、実施例について説明する。Next, an embodiment will be described.
【００２６】[0026]
使用古紙 ：雑誌 解砕状態 ：図１参照 エラストマー混合率：８％ 混練温度 ：１００℃ Used paper: Magazine Crushed state: See Fig. 1 Elastomer mixing ratio: 8% Kneading temperature: 100 ° C
【００２７】上記古紙ペレットでは、解砕された古紙に
対して容積を２０分の１に減少させることができた。In the waste paper pellets described above, the volume could be reduced by a factor of 20 with respect to the crushed waste paper.
【００２８】ついで、上記古紙ペレットと熱可塑性樹脂
とをつぎの条件で混練し、本発明の成形用組成物を得
た。 〔条件〕 熱可塑性樹脂：ポリプロピレン 混合率 ：古紙ペレット５９．８％，ポリプロピレン４０．２％ 混練温度 ：１８０℃Then, the waste paper pellets and the thermoplastic resin were kneaded under the following conditions to obtain a molding composition of the present invention. [Conditions] Thermoplastic resin: polypropylene Mixing ratio: waste paper pellets 59.8%, polypropylene 40.2% Kneading temperature: 180 ° C
【００２９】上記成形用組成物を用い、つぎの条件で射
出成形を行い、成形品を得た。 〔条件〕 乾燥温度・時間：１００℃×３時間 成形温度 ：１８０℃ 成形圧力 ：８０ｋｇ／ｃｍ２ Using the above molding composition, injection molding was performed under the following conditions to obtain a molded product. [Conditions] Drying temperature / time: 100 ° C. × 3 hours Molding temperature: 180 ° C. Molding pressure: 80 kg / cm 2
【００３０】上記のようにして得られた成形品は、重量
比で古紙が５５％、樹脂が４５％である。そして、下記
に示す機械的強度が得られた。 〔機械的強度〕 破断強度 ：１９０ｋｇｆ／ｃｍ２ 破断伸び率：４．５％ 弾性率 ：０．２ｋｇｆ／ｃｍ２ The molded article obtained as described above has a weight
The ratio is 55% of used paper and 45% of resin. And the following
The following mechanical strengths were obtained. [Mechanical strength] Breaking strength: 190 kgf / cm2 Elongation at break: 4.5% Elastic modulus: 0.2 kgf / cm2
【００３１】また、上記成形品を燃焼させたところ、総
発熱量は８２００ｃａｌ／ｇであり、通常の樹脂材料か
らなる成形品を燃焼させた際に生じる発熱量（約１１０
００〜１２０００ｃａｌ／ｇ）を大幅に下回る値が得ら
れ、通常の可燃物と同様に焼却処理できることがわか
る。When the molded article was burned, the total calorific value was 8,200 cal / g, and the calorific value generated when the molded article made of ordinary resin material was burned (about 110 cal / g).
The value is much lower than (00 to 12000 cal / g), indicating that incineration can be performed in the same manner as ordinary combustibles.
【００３２】[0032]
【発明の効果】以上のように、本発明によれば、解砕さ
れた古紙を一旦ポリオレフィンエラストマーを混合して
混練し、造粒して古紙ペレットとするため、繊維状の古
紙の嵩がおよそ１０分の１から３０分の１程度にまで減
少する。したがって、古紙を装置に供給する速度が早く
なり、生産性が極めて向上する。また、ペレット状であ
るため、解砕した古紙を保管する場合にも場所をとら
ず、移送等の取り扱いも容易になる。さらに、重量測定
の精度も良くなるため、熱可塑性樹脂との混合比率も安
定して品質が向上する。しかも、上記古紙ペレットで
は、ＡＢＳ樹脂，スチロール樹脂，ポリエチレン樹脂等
各種の樹脂と混じりやすいポリオレフィンエラストマー
が繊維の周囲にコーティングされるため、繊維と熱可塑
性樹脂材料とのなじみ性が格段に向上する。したがっ
て、各種の樹脂が混じる割合が多い再生樹脂等であって
も成形品の強度が確保され、問題なく使用できるように
なる。As described above, according to the present invention, the crushed used paper is once mixed with a polyolefin elastomer, kneaded, and granulated to obtain used paper pellets. It is reduced from 1/10 to about 1/30. Therefore, the speed of supplying the used paper to the apparatus is increased, and the productivity is extremely improved. In addition, since it is in the form of pellets, it does not take up much space when storing the used paper that has been disintegrated, and handling such as transportation is easy. Further, since the accuracy of the weight measurement is improved, the mixing ratio with the thermoplastic resin is also stabilized and the quality is improved. In addition, in the used paper pellets, a polyolefin elastomer which is easily mixed with various resins such as an ABS resin, a styrene resin, and a polyethylene resin is coated around the fibers, so that the compatibility between the fibers and the thermoplastic resin material is remarkably improved. Therefore, even if it is a recycled resin or the like in which various resins are mixed at a high ratio, the strength of the molded product is ensured, and the molded product can be used without any problem.
【００３３】本発明において、古紙が、平均太さ０．０
１〜０．１ｍｍ，平均長さ０．１〜２．５ｍｍに解砕さ
れている場合には、解砕された古紙の繊維が熱可塑性樹
脂材料と均一に混合され、成形品の機械的強度が確保さ
れる。In the present invention, the used paper has an average thickness of 0.0
When the paper is crushed to 1 to 0.1 mm and the average length is 0.1 to 2.5 mm, the fibers of the crushed waste paper are uniformly mixed with the thermoplastic resin material, and the mechanical strength of the molded product is obtained. Is secured.
【図１】本発明の実施例に使用した解砕された古紙の状
態を示す顕微鏡写真である。FIG. 1 is a photomicrograph showing a state of a crushed waste paper used in Examples of the present invention.
フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B29B 9/00 - 9/14 C08K 7/02 C08L 23/00 Continuation of the front page (58) Fields investigated (Int. Cl. 7 , DB name) B29B 9/00-9/14 C08K 7/02 C08L 23/00
Claims (4)
トマーを重量比で２〜１０％混合し、混練して造粒する
ことにより古紙ペレットとし、この古紙ペレットに、組
成物の樹脂含有率が重量比で３０〜７０％となるよう熱
可塑性樹脂ペレットを混合し、この混合物を加熱混練し
たのち造粒してペレット化することを特徴とする成形用
組成物の製造方法。1. A waste paper pellet obtained by mixing a polyolefin elastomer in a weight ratio of 2 to 10% with a crushed waste paper, kneading and granulating the waste paper pellet, and adding a resin content of the composition to the waste paper pellet by weight. A method for producing a molding composition, comprising mixing thermoplastic resin pellets so as to have a concentration of 30 to 70% by heating, kneading the mixture, granulating the mixture, and pelletizing the mixture.
ｍ，平均長さ０．１〜２．５ｍｍに解砕されている請求
項１記載の成形用組成物の製造方法。2. The waste paper has an average thickness of 0.01 to 0.1 m.
The method for producing a molding composition according to claim 1, wherein the composition is crushed to a mean length of 0.1 to 2.5 mm.
トマーとからなり、上記ポリオレフィンエラストマーが
重量比で２〜１０％混合され、この混合物が混練され造
粒されてなることを特徴とする古紙ペレット。3. Disintegrated waste paper and polyolefin elastomer
Waste paper pellets comprising a tomer, wherein the polyolefin elastomer is mixed in a weight ratio of 2 to 10%, and this mixture is kneaded and granulated.
ｍ，平均長さ０．１〜２．５ｍｍに解砕されている請求
項３記載の古紙ペレット。4. The used paper has an average thickness of 0.01 to 0.1 m.
The used paper pellets according to claim 3, which has been crushed to a mean length of 0.1 to 2.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22673998A JP3007880B1 (en) | 1998-08-11 | 1998-08-11 | Method for producing molding composition and used paper pellet used therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22673998A JP3007880B1 (en) | 1998-08-11 | 1998-08-11 | Method for producing molding composition and used paper pellet used therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP3007880B1 true JP3007880B1 (en) | 2000-02-07 |
| JP2000052339A JP2000052339A (en) | 2000-02-22 |
Family
ID=16849856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22673998A Expired - Fee Related JP3007880B1 (en) | 1998-08-11 | 1998-08-11 | Method for producing molding composition and used paper pellet used therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3007880B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007260941A (en) * | 2006-03-27 | 2007-10-11 | Hokuetsu Paper Mills Ltd | Manufacturing method of paper compounded thermoplastic resin composition and paper pellet used therein |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4509329B2 (en) * | 2000-08-07 | 2010-07-21 | 紀伊産業株式会社 | Marble-patterned resin molded products for cosmetic containers |
| JP4509328B2 (en) * | 2000-08-07 | 2010-07-21 | 紀伊産業株式会社 | Plastic molded products for cosmetic containers |
| JP4509330B2 (en) * | 2000-08-07 | 2010-07-21 | 紀伊産業株式会社 | Marble-patterned resin molded products for cosmetic containers |
| CN107708950A (en) * | 2015-06-12 | 2018-02-16 | 爱富必化成工业株式会社 | The resin granular material of containing cellulose, the resin granular material preparation method of containing cellulose, compound resin composition, the resin granular material manufacture device of the preparation method of compound resin composition and containing cellulose |
| JP6969055B2 (en) * | 2017-03-09 | 2021-11-24 | 株式会社トラスト | Paper binding |
| WO2020137301A1 (en) * | 2018-12-28 | 2020-07-02 | 株式会社環境経営総合研究所 | Cellulose-raw-material-containing resin sheet |
-
1998
- 1998-08-11 JP JP22673998A patent/JP3007880B1/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007260941A (en) * | 2006-03-27 | 2007-10-11 | Hokuetsu Paper Mills Ltd | Manufacturing method of paper compounded thermoplastic resin composition and paper pellet used therein |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000052339A (en) | 2000-02-22 |
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