JP5122540B2 - Coffee residue mixed plastic molding - Google Patents
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本発明は、加熱処理後のコーヒー残渣を配合した合成樹脂原料を利用して成形したコーヒー残渣混合プラスチック成形品に関するものである。 The present invention relates to a coffee residue-mixed plastic molded product molded using a synthetic resin raw material containing a coffee residue after heat treatment.
インスタントコーヒー等のコーヒー飲料の製造やコーヒーを用いたゼリーやプリンなどの食品を製造する過程で排出されるコーヒー残渣は、これらを生産する工場で、１工場当たり月２１トンあまり発生しており、大量に発生するコーヒー残渣の処分方法については、以前は廃棄、埋め立て、焼却等によって処分されていたが、近年の環境問題に対する高まりで、コーヒー残渣を再利用する工夫がいろいろと考案されている。 Coffee residue discharged in the process of manufacturing coffee beverages such as instant coffee and foods such as jelly and pudding using coffee is generated at a factory that produces these, about 21 tons per month, With regard to the disposal method of coffee residue generated in large quantities, it was previously disposed of by disposal, landfill, incineration, etc. However, due to the recent increase in environmental problems, various devices for reusing coffee residue have been devised.
特許文献１は、板状及び様々な形状に成型出来、コーヒー残渣の多孔性、防腐性、虫害防除性、悪臭マスキング性を利用して、床材、建築材料、電機器具のキャビネット材等の成型物を作る組成物として、コーヒー残渣を主成分とした混合物に、ポリマーを配合せしめてなるコーヒー残渣組成物の内容が記載されている。 Patent Document 1 can be molded into a plate shape and various shapes, and molds floor materials, building materials, cabinet materials for electric appliances, etc. using the porosity, antiseptic properties, insect damage control properties, and odor masking properties of coffee residues. As a composition for producing a product, the content of a coffee residue composition obtained by blending a polymer with a mixture containing a coffee residue as a main component is described.
特許文献２は、使用後にそのまま土壌などに直接鋤き込み分解させ、回収する手間を省き容易に処理できるものとして、生分解性プラスチックに食品残渣の炭化物を配合してなる食品残渣炭混合生分解性プラスチック成形品の内容が記載されている。 Patent Document 2 describes that biodegradable plastic mixed with food residue charcoal is a biodegradable plastic mixed biodegradable product that can be easily processed without being collected by directly invading and decomposing into soil after use. The contents of the plastic molded product are described.
特許文献１は、コーヒー残渣を乾燥させて、そのまま、または粉砕してポリオレフィン樹脂に混ぜたものをシート状や板状に成形したものであり、多孔性、防腐性、虫害防除性、悪臭マスキング性を利用して、シートや板状に成形した床材や建築材料、また、形状が比較的単一な電機器具のキャビネット材等の大型で肉厚なものしか成形することができない。さらに、コーヒー残渣は乾燥させても、きついコーヒー臭が残っているので、その臭いをずっと嗅ぎ続けると不快に感じる人もでてくる。また、コーヒー残渣の乾燥がキッチリとなされない場合は、カビや雑菌等がコーヒー残渣に発生し、コーヒー臭以外の不快に感じる臭気を発してしまう場合がある。 Patent Document 1 is obtained by drying a coffee residue and directly or after crushing and mixing it with a polyolefin resin, and molding it into a sheet or plate, and is porous, antiseptic, insect-controlling, and offensive odor masking Can be used to mold only large and thick materials such as flooring and building materials molded into sheets and plates, and cabinet materials for electric appliances having a relatively single shape. In addition, even if the coffee residue is dried, there is still a strong coffee odor, and some people feel uncomfortable if they continue to smell it. In addition, when the coffee residue is not completely dried, mold, germs, and the like are generated in the coffee residue, and an unpleasant odor other than the coffee odor may be emitted.
そこで、特許文献２の実施例１で紹介している方法である、排出されたコーヒー抽出粕を間接加熱式炭化装置で含水量３０％を含むコーヒー粕炭化物を粉砕し、粒度１ミクロンから１０ミクロンのコーヒー粕粉末炭を生分解性プラスチックと混合し、１８５℃に設定した二軸押出し機に供給して、ペレットにしたプラスチック原料を利用して食品残渣炭混合生分解性プラスチック成形品を成形したものであるので、コーヒー臭を含む焦げ臭が成形品から漂い嫌な臭気を放つ問題があり、手元にもって使用する日常用品やスプーンや容器などの食器具、開閉するために使用するキャップや蓋などへの成形には適さない課題がある。 Therefore, the coffee coffee cake containing 30% water content is pulverized by the indirect heating type carbonization device, and the particle size is 1 micron to 10 microns, which is the method introduced in Example 1 of Patent Document 2. Of coffee mash powdered charcoal with biodegradable plastic, supplied to a twin-screw extruder set at 185 ° C., and formed a food residue charcoal mixed biodegradable plastic molded product using pelletized plastic raw material As a result, there is a problem that the burning odor including coffee odor drifts from the molded product and gives off an unpleasant odor. Everyday items to be used at hand, cooking utensils such as spoons and containers, caps and lids used to open and close There is a problem that is not suitable for molding into the above.
本発明の目的は、上記課題を解決し、コーヒー液を抽出した残渣物を加熱処理したものを粉末化し合成樹脂原料と混練した成形したプラスチック成形品であり、臭気強度が低く、コーヒー臭や焦げ臭などの臭気が低いもしくは、臭気がないコーヒー残渣混合プラスチック成形品を提供することである。 The object of the present invention is a molded plastic molded product that solves the above-mentioned problems and that is obtained by heat-treating the residue obtained by extracting the coffee liquid and kneading it with a synthetic resin raw material. The object is to provide a coffee residue mixed plastic molded article having a low odor such as odor or no odor.
本発明は、コーヒー液を抽出した残渣物を加熱処理したものを粉末化し合成樹脂原料と混練したバイオマス資源を使用して成形したプラスチック成形品であって、前記残渣物は間接加熱式炭化装置を利用して４００℃以上となる温度に達した時点から４００℃以上の高温で１時間以上加熱し、加熱処理後のコーヒー残渣物の粉末の粒子径が、４９０μｍ以下であるとともに、コーヒー抽出残渣物の重量を１００％とした場合に、加熱処理後のコーヒー残渣物の重量の収率が８％以下のコーヒー残渣混合プラスチック成形品である。 The present invention is a plastic molded product formed by using biomass resources obtained by pulverizing a residue obtained by extracting coffee liquid and kneading with a synthetic resin raw material, and the residue is obtained by using an indirect heating carbonization device. When heated to 400 ° C. or higher and heated to a temperature of 400 ° C. or higher for 1 hour or longer , the powder size of the coffee residue after the heat treatment is 490 μm or less, and the coffee extraction residue When the weight of the coffee residue is 100%, the coffee residue mixed plastic molded product has a weight yield of the coffee residue after the heat treatment of 8% or less .
本発明は、１％以上から１６％以下の加熱処理後のコーヒー残渣の粉末を配合して成形したコーヒー残渣混合プラスチック成形品である。 The present invention is a coffee residue mixed plastic molded product obtained by blending and molding a coffee residue powder after heat treatment of 1% or more and 16% or less.
本発明は、コーヒー液を抽出した残渣物を加熱処理したものを粉末化し合成樹脂原料と混練したバイオマス資源を使用して成形したプラスチック成形品であって、前記残渣物は間接加熱式炭化装置を利用して４００℃以上となる温度に達した時点から４００℃以上の高温で１時間以上加熱し、加熱処理後のコーヒー残渣物の粉末の粒子径が、４９０μｍ以下であるとともに、コーヒー抽出残渣物の重量を１００％とした場合に、加熱処理後のコーヒー残渣物の重量の収率が８％以下のコーヒー残渣混合プラスチック成形品であるので、臭気が低いもしくは、臭気がない成形品を作ることができ、プリン・ゼリーなどのデザートカップや、スプーン、フォーク、ナイフ、ストロー、お皿や容器の蓋などの食器具などにも不快感なく使用できるコーヒー残渣混合プラスチック成形品を提供することができる。また、粒子径が細かいことから合成樹脂原料と混練しやすく着色剤としての利用もできる上、たくさんの粉末化したコーヒー残渣物を、合成樹脂原料に混練することが可能となるので、環境問題に貢献したコーヒー残渣混合プラスチック成形品を提供することができる。更に、大量に発生していたコーヒー残渣物の処分については、バイオマス資源として再利用することができるので、環境問題に貢献したコーヒー残渣混合プラスチック成形品を提供することができる。 The present invention is a plastic molded product formed by using biomass resources obtained by pulverizing a residue obtained by extracting coffee liquid and kneading with a synthetic resin raw material, and the residue is obtained by using an indirect heating carbonization device. When heated to 400 ° C. or higher and heated to a temperature of 400 ° C. or higher for 1 hour or longer , the powder size of the coffee residue after the heat treatment is 490 μm or less, and the coffee extraction residue If the weight of the coffee is 100%, the yield of coffee residue after heat treatment is a coffee residue mixed plastic molded product of 8% or less, so make a molded product with low odor or no odor It can be used for dessert cups such as pudding and jelly, and edible utensils such as spoons, forks, knives, straws, plates and container lids without discomfort. It is possible to provide a heating residue mixed plastic molding. In addition, since the particle size is small, it can be easily kneaded with the synthetic resin raw material and can be used as a colorant. In addition, many powdered coffee residues can be kneaded with the synthetic resin raw material, which is an environmental problem. The contributed coffee residue mixed plastic molding can be provided. Furthermore, since the disposal of coffee residue generated in large quantities can be reused as biomass resources, it is possible to provide a coffee residue mixed plastic molded product that contributes to environmental problems.
また、１％以上から１６％以下の加熱処理後のコーヒー残渣物の粉末を配合して成形したコーヒー残渣混合プラスチック成形品であるので、たくさんの粉末化したコーヒー残渣物を、合成樹脂原料に混練することが可能となるので、環境問題に貢献したコーヒー残渣混合プラスチック成形品を提供することができる。 Also, because it is a coffee residue mixed plastic molded product that is molded by blending 1% to 16% heat-treated coffee residue powder, a large amount of powdered coffee residue is kneaded into the synthetic resin raw material Therefore, it is possible to provide a coffee residue mixed plastic molded product that contributes to environmental problems.
まず、以下に示す評価テストを実施するため、工場から排出されたコーヒー残渣物で、含水率が６７％以上の状態のものを利用して、表１に示すように乾燥をさせて含水率を確認した。前記含水率とは、コーヒー残渣物に含まれる水分やコーヒー残渣に含まれる油分等の液体と、その他揮発性物質を含むものとする。サンプルＡはコーヒー残渣物を８０℃の真空乾燥で２時間乾燥させたもので含水率は５２．９８％であった。サンプルＢはコーヒー残渣物を８０℃の真空乾燥で２時間３０分乾燥させたもので含水率は２９．４０％であった。サンプルＣはコーヒー残渣物を８０℃の真空乾燥で３時間乾燥させたもので含水率は１２．８３％であった。 First, in order to carry out the evaluation test shown below, the coffee residue discharged from the factory having a moisture content of 67% or more is used to dry the moisture content as shown in Table 1. confirmed. The water content includes water contained in the coffee residue, liquid such as oil contained in the coffee residue, and other volatile substances. Sample A was obtained by drying the coffee residue by vacuum drying at 80 ° C. for 2 hours, and the water content was 52.98%. Sample B was obtained by drying the coffee residue by vacuum drying at 80 ° C. for 2 hours and 30 minutes, and the water content was 29.40%. Sample C was obtained by drying the coffee residue by vacuum drying at 80 ° C. for 3 hours, and the water content was 12.83%.
また、サンプルＤはコーヒー残渣物を間接加熱式炭化装置に入れ３００℃まで上昇した時点から３００℃で２時間加熱したもので含水率は１１．４７％であった。サンプルＥはコーヒー残渣物を間接加熱式炭化装置に入れ３５０℃まで上昇した時点から３５０℃で２時間加熱したもので含水率は２．４９％であった。サンプルＦはコーヒー残渣物を間接加熱式炭化装置に入れ３５０℃まで上昇した時点から３５０℃で１時間加熱したもので含水率は８．４７％であった。サンプルＧはコーヒー残渣物を間接加熱式炭化装置に入れ４００℃まで上昇した時点から４００℃で１時間加熱したもので含水率は５．２０％であった。サンプルＨはコーヒー残渣物を間接加熱式炭化装置に入れ４５０℃まで上昇した時点から４５０℃１時間加熱したもので含水率は４．３１％であった。但し、間接加熱式炭化装置で設定温度まで上昇させる時間は、３０分から１時間かかるため、その間のコーヒー残渣物は間接加熱式炭化装置の中に入ったままであるので、厳密に言えばコーヒー残渣物は間接加熱式炭化装置の中に入れて温度を上昇させている途中から乾燥は開始される状態になるが、乾燥時間については目的温度に達した時点から測定した時間である。 Sample D was heated at 300 ° C. for 2 hours from the time when the coffee residue was placed in an indirect heating carbonizer and heated to 300 ° C., and the water content was 11.47%. Sample E was obtained by heating a coffee residue in an indirect heating type carbonization apparatus to 350 ° C. and heating at 350 ° C. for 2 hours, and the moisture content was 2.49%. Sample F was obtained by heating the coffee residue in an indirect heating carbonizer to 350 ° C. and heating at 350 ° C. for 1 hour, and the water content was 8.47%. Sample G was obtained by heating the coffee residue in an indirect heating carbonizer to 400 ° C. and heating at 400 ° C. for 1 hour, and the moisture content was 5.20%. Sample H was obtained by heating the coffee residue in an indirect heating type carbonization apparatus to 450 ° C. and heating at 450 ° C. for 1 hour, and the water content was 4.31%. However, since it takes 30 minutes to 1 hour to raise the temperature to the set temperature in the indirect heating carbonization apparatus, the coffee residue during that time remains in the indirect heating carbonization apparatus. Is in a state where drying is started in the middle of raising the temperature in an indirect heating carbonization apparatus, and the drying time is the time measured from the time when the target temperature is reached.
表１に表記の収率とは、工場から排出されたコーヒー残渣物で含水率が６７％以上の状態のものの重量を１００％とした場合に、間接加熱式炭化装置に入れて加熱処理した後のコーヒー残渣物の重量を収率として表したものである。サンプルＤの収率は４３．０％であった。サンプルＥの収率は２３．０％であった。サンプルＦの収率は２９．３％であった。サンプルＧの収率は７．４％であった。サンプルＨの収率は４．０％であった。尚、表１に表記の数値は、あくまでもサンプル値であり、コーヒー残渣物に含まれるコーヒー豆の種類や配合の違い、またはコーヒー残渣物の乾燥前の状態は毎回異なるため、その数値に限定されるものではない。 Yield shown in Table 1 is the amount of coffee residue discharged from the factory and having a moisture content of 67% or more, and the weight is 100%, after being heated in an indirect heating carbonizer The weight of the coffee residue is expressed as a yield. The yield of sample D was 43.0%. The yield of sample E was 23.0%. The yield of sample F was 29.3%. The yield of sample G was 7.4%. The yield of sample H was 4.0%. In addition, the numerical value described in Table 1 is only a sample value, and is limited to the numerical value because the type and composition of coffee beans contained in the coffee residue or the state before drying of the coffee residue is different each time. It is not something.
サンプルＡからサンプルＨまでの８種類の乾燥及び加熱処理済みコーヒー残渣物を用いて、パネル２０名で臭気官能試験を行った結果を表２に示す。パネルについては、男性１３名、女性７名の計２０名で実施を行った。評価法については、臭気強度を６段階臭気強度表示法でにおいの程度を数値化することにした。６段階臭気強度表示法による採点法の評点は、０は無臭、１はやっと感知できるにおい、２は何のにおいか判る弱いにおい、３は楽に感知できるにおい、４は強いにおい、５は強烈なにおいである。 Table 2 shows the results of an odor sensory test conducted on 20 panelists using eight types of dried and heat-treated coffee residues from Sample A to Sample H. The panel was conducted by a total of 20 people: 13 men and 7 women. Regarding the evaluation method, the odor intensity was quantified by a 6-step odor intensity display method. The scoring system based on the 6-level odor intensity display method is as follows: 0 is odorless, 1 is a sensible smell, 2 is a weak scent that can be detected, 3 is a sensible smell, 4 is a strong odor, and 5 is a strong odor. It smells.
その結果、間接加熱式炭化装置で４００℃１時間加熱させたサンプルＧのコーヒー残渣物と間接加熱式炭化装置で４５０℃１時間加熱させたサンプルＨについては、２０名全員のパネルが２以下の臭気強度しか感じない結果となった。 As a result, for the coffee residue of sample G heated at 400 ° C. for 1 hour with an indirect heating type carbonization apparatus and sample H heated at 450 ° C. for 1 hour with an indirect heating type carbonization apparatus, the panel of all 20 people is 2 or less. Only the odor intensity was felt.
そこで、臭気強度のパネル２０名の平均値が２以下であったサンプルＣとサンプルＥとサンプルＧとサンプルＨの４種類のコーヒー残渣物をミキサーにかけて粉末化し、射出成形法にてスプーンの成形を行ってみた。コーヒー残渣物の粉末の粒子径が、直径４９０μｍ以下のものを使用した。合成樹脂原料に対する、コーヒー残渣物の混合率を１％の場合、５％の場合、１０％の場合、１６％の場合の４種類にて成形を行い、再び同パネル２０名で６段階臭気強度表示法による臭気強度を採点してみた。 Therefore, four types of coffee residues, Sample C, Sample E, Sample G, and Sample H, whose average value of 20 odor intensity panels was 2 or less, were pulverized using a mixer, and a spoon was formed by injection molding. I went there. A coffee residue powder having a particle size of 490 μm or less was used. Molding with 4 types of resin residue mixing ratio of 1%, 5%, 10%, 16% with respect to the synthetic resin raw material, again with 6 panel odor intensity by 20 people from the same panel The odor intensity by the display method was scored.
真空乾燥で３時間乾燥させたサンプルＣについては、含水率が高くミキサーによる粉末化が困難であり、また、スプーンなどの比較的小さな成形物を射出成形法にて成形する場合は、合成樹脂原料とサンプルＣのコーヒー残渣物がうまく混合せず、ゲート位置に混合樹脂がつまり成形するのが極めて困難である結果となった。但し、成形物を大きくして、混合樹脂を射出するゲート径を大きくすれば、解消されるものと考えられる。 Sample C, which has been dried for 3 hours by vacuum drying, has a high water content and is difficult to be pulverized by a mixer. In addition, when molding a relatively small molded product such as a spoon by injection molding, And the coffee residue of sample C did not mix well, resulting in the result that it was extremely difficult for the mixed resin to be formed at the gate position. However, it is considered that the problem can be solved by enlarging the molded product and increasing the gate diameter for injecting the mixed resin.
次に、表１のサンプルＥとサンプルＧとサンプルＨを各々の混合率で混ぜ合わせた混合樹脂を使用して射出成形したスプーンサンプルの臭気官能試験を行った結果を表３に示す。Ｅ−１はサンプルＥのコーヒー残渣物を合成樹脂原料へ１％混合させた混合樹脂を使用して射出成形法にて成形したスプーンであり、Ｅ−２はサンプルＥのコーヒー残渣物を合成樹脂原料へ５％混合させた混合樹脂を使用して射出成形法にて成形したスプーンであり、Ｅ−３はサンプルＥのコーヒー残渣物を合成樹脂原料へ１０％混合させた混合樹脂を使用して射出成形法にて成形したスプーンであり、Ｅ−４はサンプルＥのコーヒー残渣物を合成樹脂原料へ１６％混合させた混合樹脂を使用して射出成形法にて成形したスプーンである。 Next, Table 3 shows the results of an odor sensory test of a spoon sample injection-molded using a mixed resin obtained by mixing Sample E, Sample G, and Sample H in Table 1 at respective mixing ratios. E-1 is a spoon formed by an injection molding method using a mixed resin obtained by mixing 1% of the coffee residue of sample E with a synthetic resin raw material, and E-2 is a synthetic resin of the coffee residue of sample E. Spoon molded by injection molding using mixed resin mixed with 5% of raw material, E-3 uses mixed resin of 10% mixed coffee residue of sample E with synthetic resin raw material A spoon molded by an injection molding method, and E-4 is a spoon molded by an injection molding method using a mixed resin obtained by mixing 16% of the coffee residue of sample E with a synthetic resin raw material.
また、Ｇ−１はサンプルＧのコーヒー残渣物を合成樹脂原料へ１％混合させた混合樹脂を使用して射出成形法にて成形したスプーンであり、Ｇ−２はサンプルＧのコーヒー残渣物を合成樹脂原料へ５％混合させた混合樹脂を使用して射出成形法にて成形したスプーンであり、Ｇ−３はサンプルＧのコーヒー残渣物を合成樹脂原料へ１０％混合させた混合樹脂を使用して射出成形法にて成形したスプーンであり、Ｇ−４はサンプルＧのコーヒー残渣物を合成樹脂原料へ１６％混合させた混合樹脂を使用して射出成形法にて成形したスプーンである。 G-1 is a spoon molded by an injection molding method using a mixed resin obtained by mixing 1% of the coffee residue of sample G with a synthetic resin raw material, and G-2 is a coffee residue of sample G. Spoon molded by injection molding method using mixed resin mixed with synthetic resin raw material 5%, G-3 uses mixed resin of sample G coffee residue mixed with synthetic resin raw material 10% G-4 is a spoon molded by an injection molding method using a mixed resin obtained by mixing 16% of the coffee residue of sample G with a synthetic resin raw material.
更に、Ｈ−１はサンプルＨのコーヒー残渣物を合成樹脂原料へ１％混合させた混合樹脂を使用して射出成形法にて成形したスプーンであり、Ｈ−２はサンプルＨのコーヒー残渣物を合成樹脂原料へ５％混合させた混合樹脂を使用して射出成形法にて成形したスプーンであり、Ｈ−３はサンプルＨのコーヒー残渣物を合成樹脂原料へ１０％混合させた混合樹脂を使用して射出成形法にて成形したスプーンであり、Ｈ−４はサンプルＨのコーヒー残渣物を合成樹脂原料へ１６％混合させた混合樹脂を使用して射出成形法にて成形したスプーンである。 Further, H-1 is a spoon formed by an injection molding method using a mixed resin obtained by mixing 1% of the coffee residue of sample H with a synthetic resin raw material, and H-2 is a coffee residue of sample H. Spoon molded by injection molding method using mixed resin mixed with synthetic resin raw material 5%, H-3 uses mixed resin of sample H coffee residue mixed with synthetic resin raw material 10% H-4 is a spoon molded by the injection molding method using a mixed resin obtained by mixing 16% of the coffee residue of sample H with the synthetic resin raw material.
結果、いずれのスプーン成形サンプルも、パネル２０名全員の臭気強度の判定は、平均すると２以下となった。しかし、サンプルＥでコーヒー残渣物の混合率が１０％並びに１６％のもので、臭気３の判定をしたパネルが数人出たことから、臭気が低いもしくはない成形品を作るために、間接加熱式炭化装置を使用して４００℃以上で１時間以上加熱させたものを使用することが望ましいと考えられる。 As a result, in all of the spoon-shaped samples, the judgment of the odor intensity of all 20 panelists was 2 or less on average. However, in Sample E, the mixing ratio of the coffee residue was 10% and 16%, and several panels were judged with odor 3 so that indirect heating was performed to make a molded product with low or no odor. It is considered desirable to use a type carbonized apparatus heated at 400 ° C. or higher for 1 hour or longer.
また、３５０℃以下で間接加熱式炭化装置を使用してコーヒー残渣物を加熱した場合、コーヒー残渣物内に含まれる水分を蒸発するまで加熱しても、臭気が残存してしまう。加熱する温度の違いで、コーヒー残渣物内に含まれる液体や、固体である高分子物質が分解開始される温度はさまざまであり、その中で、間接加熱式炭化装置を使用して４００℃以上の高温で１時間以上加熱することで、臭気が取り除かれる効果があることを、本評価テストを繰り返し行うことで把握することができた。よって、適した条件は間接加熱式炭化装置を使用して４００℃以上で１時間以上加熱させたものを使用するのがよく、さらに、最も適した条件は４５０℃で１時間以上、間接加熱式炭化装置を使用して加熱したコーヒー残渣物を使用することで、ほとんど臭気がしない成形品を作り出すことが可能になる。これにより、プリン・ゼリーなどのデザートカップや、スプーン、フォーク、ナイフ、ストロー、お皿や容器の蓋などの食器具などにも不快感なく、使用できるコーヒー残渣混合プラスチック成形品を提供することができる。 Moreover, when a coffee residue is heated using an indirect heating carbonization apparatus at 350 degrees C or less, even if it heats until the water | moisture content contained in a coffee residue evaporates, an odor will remain. The temperature at which the liquid contained in the coffee residue and the polymer substance that is a solid start to decompose vary depending on the heating temperature, and among them, 400 ° C or higher using an indirect heating carbonizer It was able to grasp by repeating this evaluation test that the effect of removing the odor by heating at a high temperature of 1 hour or more was effective. Therefore, it is preferable to use an indirect heating type carbonization apparatus heated at 400 ° C. or more for 1 hour or more, and the most suitable condition is 450 ° C. for 1 hour or more, indirect heating type. By using the coffee residue heated using the carbonization apparatus, it becomes possible to produce a molded product having almost no odor. As a result, it is possible to provide a coffee residue mixed plastic molded product that can be used without causing discomfort in dessert cups such as pudding and jelly, and food utensils such as spoons, forks, knives, straws, plates and container lids. it can.
更に、本発明で使用するコーヒー残渣物を加熱して粉末化したものは、カーボンブラックやクロム、チタンブラックなどの黒色着色材の代替物として利用することができるものである。現在市場で大半を占めるカーボンブラックは石油由来であり、クロム、チタンブラックは鉱物であるが、それぞれが枯渇資源であるのに対して、本発明で使用するコーヒー残渣物を加熱して粉末化したものは、廃棄されるコーヒー残渣物をバイオマス資源として有効利用するものであり、環境負荷の低減もはかれるメリットもある。また、本発明のコーヒー残渣混合プラスチック成形品は、食品容器やスプーンに使用する際に必要な器具及び容器包装規格試験にも合格している安全性の確認がとれた成形品であるので、これにより、プリン・ゼリーなどのデザートカップや、スプーン、フォーク、ナイフ、ストロー、お皿や容器の蓋などの食器具などにも安心して使用できるコーヒー残渣混合プラスチック成形品を提供することができる。 Furthermore, what was pulverized by heating the coffee residue used by this invention can be utilized as a substitute of black coloring materials, such as carbon black, chromium, and titanium black. Carbon black, which currently occupies the majority of the market, is derived from petroleum, and chromium and titanium black are minerals, but each is a depleted resource, whereas the coffee residue used in the present invention is heated and pulverized. In this case, waste coffee residue is effectively used as biomass resources, and there is also an advantage that the environmental load can be reduced. In addition, the coffee residue-mixed plastic molded product of the present invention is a molded product that has been confirmed to be safe and has passed the equipment and container packaging standard tests necessary for use in food containers and spoons. Thus, it is possible to provide a coffee residue mixed plastic molded product that can be used with confidence in dessert cups such as pudding and jelly, and food utensils such as spoons, forks, knives, straws, plates and container lids.
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