JP2000239440A - Composition of starch-based biodegradable resin/waste paper complex and molded product thereof - Google Patents
Composition of starch-based biodegradable resin/waste paper complex and molded product thereofInfo
- Publication number
- JP2000239440A JP2000239440A JP11045545A JP4554599A JP2000239440A JP 2000239440 A JP2000239440 A JP 2000239440A JP 11045545 A JP11045545 A JP 11045545A JP 4554599 A JP4554599 A JP 4554599A JP 2000239440 A JP2000239440 A JP 2000239440A
- Authority
- JP
- Japan
- Prior art keywords
- starch
- waste paper
- molding
- biodegradable resin
- fine powder
- 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.)
- Withdrawn
Links
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- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Biological Depolymerization Polymers (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、微粉末故紙を主成
分とし、さらに澱粉及び生分解性樹脂を含む成形材料で
あって、成型時の流動性に優れ、かつこの成形材料から
形成された成形品は高い生分解性を有する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding material containing finely powdered waste paper as a main component and further containing starch and a biodegradable resin, which has excellent fluidity during molding and is formed from this molding material. Molded articles have high biodegradability.
【０００２】[0002]
【従来の技術及び発明が解決すべき課題】最近、構造的
な故紙の余剰がリサイクルの輪を脅かし始めており、故紙の
新規用途開発が強く求めっれて来ている。故紙を紙以外
の用途にリサイクルする技術として、梱包や緩衝材に使
われているハ゜ルフ゜モールト゛がある。しかし、従来法で製造さ
れたハ゜ルフ゜モールトは、製造コストが高いこと、成形した時
の厚みが最大でも３mmと薄く、重量物の梱包・緩衝には
向かないと言った欠点があった。そこで、射出成形、押
出し成形、フ゛ロー成形等のフ゜ラスチック成形技術を使て、ハ゜ルフ゜
モールト゛に変わる新たな技術開発が試みられている。2. Description of the Related Art Recently, the surplus of structural waste paper has begun to threaten the recycling cycle, and there is a strong demand for the development of new uses of waste paper. As a technology for recycling waste paper for uses other than paper, there is a palm mortar used for packing and cushioning materials. However, the balm mortar manufactured by the conventional method has a drawback that the manufacturing cost is high, the thickness when molded is as thin as 3 mm at the maximum, and it is not suitable for packing and cushioning of heavy objects. In view of this, a new technology development has been attempted using plastic molding techniques such as injection molding, extrusion molding, and flow molding, in place of the ball molding.
【０００３】例えば、特開平７−１７５７１号公報に
は、澱粉を主たる成分とし、他の成分として植物繊維質
成分および／または蛋白質成分を含む原料を発泡成形す
る方法、及びこの方法により得られる、多孔性あるいは
海面状とした、生分解性の緩衝材が開示されている。し
かし、この発泡成形方法では、植物繊維の配合比率が多
くなると成形が不可能になるばかりでなく発泡率も極端
に悪くなることが知られている。また、特開平７−１２
４９１４号公報には、開放状態にある成形型の内面に所
要量の微小紙片と粉末状澱粉と水を吹きかけ、その後加
熱して澱粉糊化するか、開放状態にある成形型の内面に
所要量の微小紙片と澱粉糊を吹き付け、その後加熱乾燥
する紙成形品の成形方法が記載されている。しかし、こ
の方法では、微小紙片と澱粉粉体、水及び澱粉糊を金型
に噴霧するため作業性に問題が生じるばかりでなく、精
密な形状が要求される成形品を作ることができなかっ
た。特開平９−３１３３２６号公報には、故紙粉砕品と
生分解性フ゜ラスチックとの混合物を用いて、射出成形またはフ
゛ロー成形にて作られた分解可能な成形物が記載されてい
る。しかしこの公報に記載の成形物の場合、故紙の配合
率を高くすると流動性が悪くなり、成形が不可能になる
という欠点があった。また、生分解速度が相対的に遅い
と言う問題点もあった。特開平１０−３０９１３５公報
には、故紙のような植物系繊維、澱粉のような水溶性結
合材に水を混練りして、育苗容器を成形方法が記載され
ている。しかし、この公報に記載されている育苗容器の
成形原料は流動性が悪く、各種成形体が作りにくいと言
った欠点があった。[0003] For example, Japanese Patent Application Laid-Open No. 7-17571 discloses a method of foam-forming a raw material containing starch as a main component and a plant fiber component and / or a protein component as other components, and a method obtained by this method. A biodegradable cushioning material that is porous or sea-like is disclosed. However, in this foam molding method, it is known that when the blending ratio of the plant fiber is large, not only molding is impossible, but also the foaming rate is extremely deteriorated. Also, JP-A-7-12
No. 4914 discloses that a required amount of fine paper chips, powdered starch and water are sprayed on the inner surface of a mold in an open state and then heated to starch gelatinization or the required amount is sprayed on the inner surface of the mold in an open state. A method of forming a molded paper product is described in which a micro paper piece is sprayed with a starch paste and then heated and dried. However, according to this method, a fine paper piece, starch powder, water and starch paste are sprayed onto a mold, which causes not only a problem in workability but also a molded article requiring a precise shape cannot be produced. . Japanese Patent Application Laid-Open No. 9-313326 describes a decomposable molded product produced by injection molding or flow molding using a mixture of ground paper and a biodegradable plastic. However, in the case of the molded product described in this publication, there is a drawback that when the blending ratio of the waste paper is increased, the fluidity is deteriorated and molding becomes impossible. There is also a problem that the biodegradation rate is relatively slow. Japanese Patent Application Laid-Open No. 10-309135 describes a method for forming a seedling growing container by kneading water with a plant fiber such as waste paper and a water-soluble binder such as starch. However, the molding raw material for the seedling raising container described in this publication has a drawback that it has poor fluidity and it is difficult to produce various molded products.
【０００４】[0004]
【発明が解決しようとする課題】そこで、本発明の目的
は、比較的故紙の配合量が高いにも係わらず、成形時に
優れた流動性を示し得る成形材料（成形用原料）を提供
することにある。さらに本発明の目的は、比較的故紙の
配合量が高いにも係わらず容易に成形でき、かつ優れた
生分解性を有する成形品を提供することにある。Accordingly, an object of the present invention is to provide a molding material (raw material for molding) which can exhibit excellent fluidity at the time of molding despite the relatively high content of waste paper. It is in. It is a further object of the present invention to provide a molded article which can be easily molded in spite of a relatively high amount of waste paper and has excellent biodegradability.
【０００５】[0005]
【課題を解決するための手段】本発明者らは、上記目的
を達成するため、固形分中の故紙に生分解性フ゜ラスチックを
配合した種々の系について検討した。その結果、故紙の
配合量が５０％以上と高いにも係わらず、射出成形、押
出し成形及びフ゛ロー成形等の成形時に、容易に成形できる
流動性を示し、しかも優れた生分解性を示す組成を見出
して本発明を完成した。本発明は、澱粉、生分解性樹
脂、微粉末故紙及び澱粉可塑剤を含む成形材料であっ
て、澱粉及び生分解性樹脂からなる混合物〔但し、重量
比率（澱粉：生分解性樹脂）は90:10〜５0:50の範囲で
ある〕と微粉末故紙の重量比率(混合物：微粉末故紙)は
２０：８０〜５０：５０の範囲であり、かつ澱粉可塑剤
の含有量は、澱粉、生分解性樹脂及び微粉末故紙の合計
重量の１０〜５０重量％の範囲である材料に関する。Means for Solving the Problems In order to achieve the above object, the present inventors have studied various systems in which biodegradable plastics are mixed with waste paper in solid content. As a result, even though the amount of waste paper is as high as 50% or more, the composition exhibits fluidity that can be easily molded during molding such as injection molding, extrusion molding, and flow molding, and has excellent biodegradability. We have completed the present invention. The present invention relates to a molding material containing starch, a biodegradable resin, finely powdered waste paper and a starch plasticizer, wherein a mixture of starch and a biodegradable resin (provided that the weight ratio (starch: biodegradable resin) is 90%) : 10 to 50:50) and the weight ratio of fine powder waste paper (mixture: fine powder waste paper) is 20:80 to 50:50, and the content of starch plasticizer is starch, green For materials that range from 10 to 50% by weight of the total weight of the degradable resin and the finely divided waste paper.
【０００６】[0006]
【発明の実施の形態】従来の技術では、澱粉系生分解性
フ゜ラスチック（澱粉及び生分解性樹脂からなる混合物）に故
紙等の植物系繊維を配合すると、流動性が極端に悪くな
ってしまった。そのため、澱粉系生分解性フ゜ラスチックに対
する繊維質の固形分中の配合比率を２０〜３０％程度ま
で下げざるを得なかった。さらに、配合比率をこのよう
なレベルに下げてもペレット化や各種成形は、依然とし
て困難であった。それに対して、本発明においては、澱
粉系生分解性フ゜ラスチック（澱粉及び生分解性樹脂からなる
混合物）と粉末故紙からなる固形分中の微粉末故紙の配
合率を５０〜８０％としても、成形可能な流動性を維持
でき、かつハ゜ルフ゜モールト゛の風合いを持つ成形品を製造する
ことができるという利点がある。DESCRIPTION OF THE PREFERRED EMBODIMENTS In the prior art, when plant-based fibers such as waste paper are blended with starch-based biodegradable plastics (mixture of starch and biodegradable resin), fluidity is extremely deteriorated. . Therefore, the mixing ratio of the fibrous material to the starch-based biodegradable plastic in the solid content has to be reduced to about 20 to 30%. Further, even if the mixing ratio is reduced to such a level, pelletization and various moldings are still difficult. On the other hand, in the present invention, even if the mixing ratio of the fine powder waste paper in the solid content of the starch-based biodegradable plastic (a mixture of starch and biodegradable resin) and the powder waste paper is 50 to 80%, There is an advantage that it is possible to maintain a possible fluidity and to produce a molded product having a feel of a half-mold.
【０００７】本発明の成形材料には、従来からの公知の
澱粉をそのまま使用でき、澱粉としては、例えば未加工
澱粉及び加工澱粉のいずれを用いることできる。未加工
澱粉としては、例えば馬鈴薯澱粉、甘藷澱粉、タヒ゜オカ澱
粉等の地下澱粉及び小麦澱粉、コーンスターチ、サゴ澱
粉、米澱粉等の地上澱粉、ワキシースターチ、ハイアミ
ローススターチ等の特殊澱粉を挙げることが出来る。For the molding material of the present invention, conventionally known starch can be used as it is, and as the starch, for example, either unprocessed starch or processed starch can be used. Examples of the raw starch include ground starch such as potato starch, sweet potato starch, and tapioca starch, and ground starch such as wheat starch, corn starch, sago starch, rice starch, and special starch such as waxy starch and high amylose starch. .
【０００８】加工澱粉としては、白色デキストリン、黄
色デキストリン、ブリテイシュガムなどの焙焼デキスト
リン、酸化澱粉、低粘度変性澱粉等の分解産物とアルフ
ァー澱粉を挙げることが出来る。さらに、澱粉誘導体と
しては酢酸エステル、リン酸エステル等の澱粉エステ
ル、カルボキシエチルエーテル、ヒドロキシエチルエー
テル、ヒドロキシプロピルエーテル、陽性澱粉等の澱粉
エーテルを挙げることが出来る。Examples of the processed starch include roasted dextrins such as white dextrin, yellow dextrin and british gum, degradation products such as oxidized starch and low-viscosity modified starch, and alpha starch. Further, examples of the starch derivatives include starch esters such as acetate esters and phosphate esters, and starch ethers such as carboxyethyl ether, hydroxyethyl ether, hydroxypropyl ether and positive starch.
【０００９】生分解性樹脂としては、例えば、脂肪族ポ
リエステル樹脂であるポリカプロラクトン、ポリ乳酸、
ポリブチレンアジペート、ポリブチレンサクシネート、
ポリヒドロキシブチレート・バリレート共重合体、アセ
チルセルロース、ポリビニルアルコールなどを挙げるこ
とが出来る。Examples of the biodegradable resin include aliphatic polyester resins such as polycaprolactone, polylactic acid, and the like.
Polybutylene adipate, polybutylene succinate,
Examples thereof include polyhydroxybutyrate / valerate copolymer, acetylcellulose, and polyvinyl alcohol.
【００１０】澱粉と生分解性樹脂の配合比率は９０：１
０〜５０：５０の範囲であることが好ましい。澱粉の配
合率が５０：５０以上であれば故紙との接着性を良好に
維持でき、かつ澱粉の配合率が９０：１０以下であれ
ば、吸湿性を抑えることができ、優れた耐水性を有する
成形品を提供することができる。The mixing ratio of starch and biodegradable resin is 90: 1.
It is preferably in the range of 0 to 50:50. When the blending ratio of starch is 50:50 or more, good adhesion to waste paper can be maintained, and when the blending ratio of starch is 90:10 or less, hygroscopicity can be suppressed and excellent water resistance can be obtained. A molded article having the same can be provided.
【００１１】澱粉可塑剤は、澱粉を可塑化する薬剤であ
って、水以外の公知の可塑剤から適宜選択することが出
来る。澱粉可塑剤は、例えば、生分解性を有し、かつ高
沸点（例えば、１５０℃以上、好ましくは１８０℃）の
可塑剤を挙げることが出来る。そのような可塑剤の例と
しては、沸点１５０℃以上、好ましくは１８０℃以上の
アルコール化合物を挙げることができ、具体的には、エ
チレングリコール、プロピレングリコール、グリセリ
ン、ソルビトール、ポリエチレングリコ−ル、ポリプロ
ピレングリコール、１，３−ブタンジオール、イソデシ
ルアルコール、n−デシルアルコール、ジエチレングリ
コール、ジグリセリン、ポリグリセリン、ジプロピレン
グリコール、ｎ−オクチルアルコール等を挙げることが
出来る。[0011] The starch plasticizer is an agent for plasticizing starch, and can be appropriately selected from known plasticizers other than water. Examples of the starch plasticizer include a plasticizer having biodegradability and having a high boiling point (for example, 150 ° C. or higher, preferably 180 ° C.). Examples of such plasticizers include alcohol compounds having a boiling point of 150 ° C. or higher, preferably 180 ° C. or higher. Specifically, ethylene glycol, propylene glycol, glycerin, sorbitol, polyethylene glycol, polypropylene Glycol, 1,3-butanediol, isodecyl alcohol, n-decyl alcohol, diethylene glycol, diglycerin, polyglycerin, dipropylene glycol, n-octyl alcohol and the like can be mentioned.
【００１２】故紙は、回収された紙製品のいずれであっ
ても良いが、本発明では、微粉末故紙を用いる。微粉末
の故紙を用いることで、成型時の流動性を改善すること
ができる。微粉末の故紙は、故紙を粉砕または研磨等す
ることにより製造することができる。特に、長軸方向の
平均の繊維長が０．０２〜１ｍｍの範囲である微粉末故
紙を用いることが好ましい。長軸方向の平均の繊維長が
０．０２ｍｍ以上であれば、過大な処理操作無しに製造
でき、また、長軸方向の平均の繊維長が１ｍｍ以下であ
れば、所望の流動性改善効果が得られる。より好ましく
は、長軸方向の平均の繊維長の下限は０．１ｍｍであ
り、長軸方向の平均の繊維長の上限は、０．８ｍｍであ
る。微粉末の故紙としては、例えば製本の研磨時に出る
紙粉を使用することが経済的である。勿論、通常の故紙
を微粉砕して、これを微粉末故紙として使用することも
出来る。The waste paper may be any recovered paper product, but in the present invention, fine powder waste paper is used. Use of fine powder wastepaper can improve the fluidity during molding. Fine powder waste paper can be produced by grinding or polishing the waste paper. In particular, it is preferable to use fine powder wastepaper having an average fiber length in the long axis direction in the range of 0.02 to 1 mm. If the average fiber length in the long axis direction is 0.02 mm or more, it can be manufactured without excessive processing operation. If the average fiber length in the long axis direction is 1 mm or less, the desired fluidity improving effect is not obtained. can get. More preferably, the lower limit of the average fiber length in the long axis direction is 0.1 mm, and the upper limit of the average fiber length in the long axis direction is 0.8 mm. As the fine powder waste paper, it is economical to use, for example, paper powder generated during bookbinding polishing. Of course, ordinary waste paper can be finely pulverized and used as fine powder waste paper.
【００１３】澱粉及び生分解性樹脂からなる混合物と微
粉末故紙との重量比率は２０：８０〜５０：５０の範囲
であることが好ましい。微粉末故紙の重量比率を５０：
５０以上とすることで、ハ゜ルフ゜モールト゛のように紙の風合い
を出すことができ、かつ８０：２０以下とすることで、
流動性低下を抑制でき、良好な成形及び成形時の安定操
業が可能になる。[0013] The weight ratio of the mixture of starch and biodegradable resin to the finely powdered waste paper is preferably in the range of 20:80 to 50:50. The weight ratio of the fine powder waste paper is 50:
By setting the ratio to 50 or more, the texture of the paper can be obtained as in the case of a malt malt, and by setting the ratio to 80:20 or less,
Fluidity reduction can be suppressed, and good molding and stable operation during molding can be performed.
【００１４】澱粉、生分解性樹脂及び微粉末故紙からな
る全固形分に対する澱粉可塑剤の重量比率は、１０〜５
０％の範囲であることが適当である。澱粉可塑剤の重量
比率は、澱粉及び生分解性樹脂からなる混合物の組成
（澱粉と生分解性樹脂との比率）及びこの混合物に対す
る故紙の比率に応じて、上記範囲で適宜決定できる。ま
た、本発明の成形材料の用途によっても澱粉可塑剤の重
量比率は適宜変更できる。澱粉可塑剤の上記重量比率が
１０％未満だと流動性が得られにくく、また、５０％を
超えると逆に柔らかすぎたり、製品にした後で可塑剤が
ブリーデイングする恐れが生ずる。The weight ratio of the starch plasticizer to the total solid content of starch, biodegradable resin and fine waste paper is 10 to 5%.
Suitably, it is in the range of 0%. The weight ratio of the starch plasticizer can be appropriately determined within the above range according to the composition of the mixture of starch and the biodegradable resin (the ratio of starch to the biodegradable resin) and the ratio of waste paper to this mixture. Also, the weight ratio of the starch plasticizer can be appropriately changed depending on the use of the molding material of the present invention. If the above weight ratio of the starch plasticizer is less than 10%, it is difficult to obtain fluidity, and if it exceeds 50%, on the contrary, it is too soft or the plasticizer may be bleeding after being made into a product.
【００１５】本発明の成形材料は、上記澱粉、生分解性
樹脂、微粉末故紙及び澱粉可塑剤以外に、必要により、
本発明の材料の物性を損なわない範囲で、公知の添加剤
を含むこともできる。そのような添加剤としては、例え
ば、等を挙げることができる。[0015] In addition to the above-mentioned starch, biodegradable resin, finely powdered waste paper and starch plasticizer, the molding material of the present invention may further comprise
Known additives can be included as long as the physical properties of the material of the present invention are not impaired. Examples of such additives include, for example, and the like.
【００１６】本発明の成形材料は、粉末状、粒状、ペレ
ット状、シート状等の形状を有することができる。この
ような形状の成形材料は、例えば、上記澱粉、生分解性
樹脂、微粉末故紙及び澱粉可塑剤、さらには、必要によ
り適宜の添加剤を、公知の方法により、混合し、押出成
形機等により成形することで得られる。このようにして
得られた成形材料は、さらに、射出成形、押出し成形ま
たはフ゛ロー成形等の公知の方法により、所望の形状の成形
物にすることができる。The molding material of the present invention can have a shape such as powder, granule, pellet, sheet and the like. The molding material having such a shape is prepared by, for example, mixing the above-mentioned starch, biodegradable resin, finely powdered waste paper and starch plasticizer, and if necessary, an appropriate additive by a known method, and using an extruder. It is obtained by molding. The molding material thus obtained can be further molded into a desired shape by a known method such as injection molding, extrusion molding or flow molding.
【００１７】[0017]
【実施例】以下、実施例に基づいて本発明を更に説明す
る。 実施例１コ -ンスターチ（水分１３％）４０部、ヒ゛オノーレ＃３００１（昭
和高分子製）１０部、微粉末故紙（製本時にでた紙粉、
繊維長０．２mm）５０部、グリセリン４０部をヘンシェルミキサ
ー（三井三池化工機製）で１０００rpm、１０分間混合し
た後試験用押出機（東洋精機製）にて１５０℃でペレッ
ト化した。得られたヘ゜レットを日精樹脂工業製射出成形機
（８０Ｔ）にてMAX１６０℃、肉圧０．５〜１mm、の条
件で苗ポットを試作した。結果を表１に示す。The present invention will be further described below with reference to examples. Example 1 40 parts of starch (13% moisture), 10 parts of Hionore # 3001 (manufactured by Showa Kobunshi), fine powder waste paper (paper powder produced during bookbinding,
50 parts of a fiber length of 0.2 mm) and 40 parts of glycerin were mixed at 1000 rpm for 10 minutes by a Henschel mixer (manufactured by Mitsui Miike Kakoki Co., Ltd.) and then pelletized at 150 ° C. by a test extruder (manufactured by Toyo Seiki). A seedling pot was trial-produced from the obtained pellet using an injection molding machine (80T) manufactured by Nissei Plastic Industrial Co., Ltd. under the conditions of MAX160 ° C. and a meat pressure of 0.5 to 1 mm. Table 1 shows the results.
【００１８】比較例１ 微粉末故紙の代わりに通常の故紙（繊維長１．５mm）を
用いた以外は実施例１と同様にして試験押出機にてペレ
ット化を試みた。Comparative Example 1 Pelletization was attempted using a test extruder in the same manner as in Example 1 except that ordinary waste paper (fiber length: 1.5 mm) was used instead of fine powder waste paper.
【００１９】比較例２ 澱粉可塑剤としてグリセリンの代わりに水を用いた以外
は実施例１と同様の方法にてペレット及び苗ポットを試
作した。ただし押出温度は１００℃とした。Comparative Example 2 A pellet and a seedling pot were prepared in the same manner as in Example 1 except that water was used instead of glycerin as a starch plasticizer. However, the extrusion temperature was 100 ° C.
【００２０】[0020]
【表１】 表１に示すように実施例１ではペレット及び苗ポット共
試作でき、成形性及び物性共良好であった。比較例１で
は粘度が高すぎ、ペレットさえも出来なかった。比較例
２ではペレット化時に発泡現象が見られ、フロテスター試験で
は測定不能で、流動性に問題が有ることを示唆した。苗
ポットの試作では金型の中でショートモールドになっ
た。[Table 1] As shown in Table 1, in Example 1, a pellet and a seedling pot were co-prototyped, and both moldability and physical properties were good. In Comparative Example 1, the viscosity was too high, and even pellets could not be formed. In Comparative Example 2, a foaming phenomenon was observed at the time of pelletization, and the foaming phenomenon could not be measured by the flotte test, suggesting that there was a problem in fluidity. In the trial production of the seedling pot, it became a short mold in the mold.
【００２１】実施例２ コ-ンスターチ（水分１３％）３５部、ラクティー＃９
０００（島津製作所製ポリ乳酸）１５部、微粉末故紙
（繊維長０．２mm）５０部、エチレングリコール３０部
をヘンシェルミキサーで１０００rpm,１０分間混合した
後、試験用押出機にて１８０℃でペレット化した。得ら
れたヘ゜レットを日精樹脂工業製射出成形機（６０Ｔ）にて
ＭＡＸ１８０℃、肉圧１mmの条件でトレーを試作した。
結果を表２に示す。Example 2 Corn starch (13% moisture) 35 parts, Lacty # 9
000 (polylactic acid manufactured by Shimadzu Corporation), 15 parts of fine powder waste paper (fiber length: 0.2 mm), and 30 parts of ethylene glycol were mixed with a Henschel mixer at 1000 rpm for 10 minutes, and then pelletized at 180 ° C. with a test extruder. It has become. Using an injection molding machine (60T) manufactured by Nissei Plastic Industrial Co., Ltd., a tray was trial-produced under the conditions of MAX 180 ° C. and a wall pressure of 1 mm.
Table 2 shows the results.
【００２２】実施例３ 澱粉可塑剤としてエチレングリコールの代わりにポリエ
チレングリコールを用いた以外は実施例２と同様な方法
にてペレット及び苗ポットを試作した。Example 3 Pellets and seedling pots were prepared in the same manner as in Example 2 except that polyethylene glycol was used instead of ethylene glycol as a starch plasticizer.
【００２３】比較例３ 澱粉可塑剤としてエチレングリコールの代わりに水を用
いて、実施例２と同様の方法でにてペレット及びトレー
を試作した。Comparative Example 3 Pellets and trays were produced in the same manner as in Example 2 except that water was used as the starch plasticizer instead of ethylene glycol.
【００２４】[0024]
【表２】 [Table 2]
【００２５】表２に示す結果から明らかの如く、水を可
塑剤として使った時はペレットが何とかできたが発泡現
象が見られ、またフローテスター試験では測定不能で、流動性
に問題が有ることを示唆した。トレーの試作ではショー
トモ−ルドになった。それに対して実施例２，３のエチ
レングリコール、ポリエチレングリコールを使用した場
合は離型性、成形性共に良好であった。As is evident from the results shown in Table 2, when water was used as a plasticizer, pellets were managed to some extent, but the foaming phenomenon was observed, and the flow tester test was unable to measure and there was a problem in fluidity. Suggested. The prototype of the tray was short-molded. On the other hand, when the ethylene glycol and polyethylene glycol of Examples 2 and 3 were used, both the releasability and the moldability were good.
【００２６】実施例4 コンスターチ（水分１３％）２０部、ポリカプロラクト
ン（ダイセル化学工業製セルグリーンP-HB05）１０部、
微粉末故紙（故紙を平均繊維長０．５ｍｍに粉砕)７０
部を使用した。これにエチレングリコール２０部をヘン
シェルミキサーで１０００ｒｐｍ、１０分間混合した後
試験用押し出し機にて１３０℃でペレット化した。得ら
れたペレットを日精樹脂工業製射出成形機（６０T)にて
MAX１４０℃、肉圧１mmの条件でトレーを試作した。結
果を表３に示す。Example 4 20 parts of constarch (13% water), 10 parts of polycaprolactone (Cell Green P-HB05 manufactured by Daicel Chemical Industries),
Fine powder waste paper (crushed waste paper to an average fiber length of 0.5 mm) 70
Parts were used. This was mixed with 20 parts of ethylene glycol by a Henschel mixer at 1000 rpm for 10 minutes and then pelletized at 130 ° C. by a test extruder. The obtained pellets are processed with an injection molding machine (60T) manufactured by Nissei Plastic Industry.
A tray was prototyped under the conditions of a maximum of 140 ° C. and a meat pressure of 1 mm. Table 3 shows the results.
【００２７】比較例４ 澱粉可塑剤としてエチレングリコールの代わりに水を用
いて、実施例４と同様な方法にてペレット及びトレーを
試作した。結果を表３に示す。Comparative Example 4 Pellets and trays were experimentally produced in the same manner as in Example 4 except that water was used as the starch plasticizer instead of ethylene glycol. Table 3 shows the results.
【００２８】[0028]
【表３】 [Table 3]
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 2B260 AA20 BA04 BA15 BA18 BA19 BA25 BA30 CB02 CC02 CD16 DB13 EA11 EA12 EA13 EB02 4F071 AA08 AA09 AA44 AC05 AE04 AF53 AH05 AH19 BA01 BB03 BB05 BB06 BC01 BC04 BC07 4J002 AB011 AB023 AB032 AB042 AB052 BE023 CF033 CF193 EC036 EC046 EC056 FA041 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2B260 AA20 BA04 BA15 BA18 BA19 BA25 BA30 CB02 CC02 CD16 DB13 EA11 EA12 EA13 EB02 4F071 AA08 AA09 AA44 AC05 AE04 AF53 AH05 AH19 BA01 BB03 BB05 BB06 AB03 AB002 AB03 AB002 AB02 AB002 BE023 CF033 CF193 EC036 EC046 EC056 FA041
Claims (4)
粉可塑剤を含む成形材料であって、澱粉及び生分解性樹
脂からなる混合物〔但し、重量比率（澱粉：生分解性樹
脂）は90:10〜５0:50の範囲である〕と微粉末故紙の重
量比率(混合物：微粉末故紙)は２０：８０〜５０：５０
の範囲であり、かつ澱粉可塑剤の含有量は、澱粉、生分
解性樹脂及び微粉末故紙の合計重量の１０〜５０重量％
の範囲である材料。1. A molding material containing starch, a biodegradable resin, finely ground waste paper and a starch plasticizer, wherein a mixture of starch and a biodegradable resin (where the weight ratio (starch: biodegradable resin) is 90:10 to 50:50] and fine powder waste paper (mixture: fine powder waste paper) is 20:80 to 50:50.
And the content of the starch plasticizer is 10 to 50% by weight based on the total weight of the starch, the biodegradable resin and the fine powder wastepaper.
The materials that are in the range.
ール化合物である請求項１に記載の成形材料。2. The molding material according to claim 1, wherein the starch plasticizer is an alcohol compound having a boiling point of 150 ° C. or higher.
０．０２〜１mmの範囲である請求項１または２に記載の
成形材料。3. The molding material according to claim 1, wherein the fine powder waste paper has an average fiber length in the major axis direction of 0.02 to 1 mm.
形材料を射出成形、押出し成形またはフ゛ロー成形すること
により成形した成形物。4. A molded product obtained by subjecting the molding material according to claim 1 to injection molding, extrusion molding, or flow molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11045545A JP2000239440A (en) | 1999-02-23 | 1999-02-23 | Composition of starch-based biodegradable resin/waste paper complex and molded product thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11045545A JP2000239440A (en) | 1999-02-23 | 1999-02-23 | Composition of starch-based biodegradable resin/waste paper complex and molded product thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000239440A true JP2000239440A (en) | 2000-09-05 |
Family
ID=12722345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11045545A Withdrawn JP2000239440A (en) | 1999-02-23 | 1999-02-23 | Composition of starch-based biodegradable resin/waste paper complex and molded product thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000239440A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7378149B2 (en) | 2001-12-26 | 2008-05-27 | Kansai Technology Licensing Organization Co, Ltd. | High strength material using cellulose microfibrils |
| JP2009090669A (en) * | 2007-10-09 | 2009-04-30 | Homatherm Ag | Woody fiber heat insulator and its manufacturing method |
| JP2015096584A (en) * | 2013-11-15 | 2015-05-21 | 株式会社ケイケイ | Biodegradable resin composition, and manufacturing method and molded article of the resin composition |
| JP2018087354A (en) * | 2018-03-05 | 2018-06-07 | 株式会社ケイケイ | Biodegradable resin composition and method for producing the same |
| JP2019163487A (en) * | 2019-06-07 | 2019-09-26 | 株式会社ケイケイ | Biodegradable resin composition and manufacturing method therefor |
| CN114381135A (en) * | 2021-12-15 | 2022-04-22 | 淮安金利达包装有限公司 | Degradable environment-friendly fiber packaging material and manufacturing process thereof |
-
1999
- 1999-02-23 JP JP11045545A patent/JP2000239440A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7378149B2 (en) | 2001-12-26 | 2008-05-27 | Kansai Technology Licensing Organization Co, Ltd. | High strength material using cellulose microfibrils |
| JP2009090669A (en) * | 2007-10-09 | 2009-04-30 | Homatherm Ag | Woody fiber heat insulator and its manufacturing method |
| JP2015096584A (en) * | 2013-11-15 | 2015-05-21 | 株式会社ケイケイ | Biodegradable resin composition, and manufacturing method and molded article of the resin composition |
| JP2018087354A (en) * | 2018-03-05 | 2018-06-07 | 株式会社ケイケイ | Biodegradable resin composition and method for producing the same |
| JP2019163487A (en) * | 2019-06-07 | 2019-09-26 | 株式会社ケイケイ | Biodegradable resin composition and manufacturing method therefor |
| CN114381135A (en) * | 2021-12-15 | 2022-04-22 | 淮安金利达包装有限公司 | Degradable environment-friendly fiber packaging material and manufacturing process thereof |
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