JP3463222B2 - Method for producing biodegradable molded articles - Google Patents
Method for producing biodegradable molded articlesInfo
- Publication number
- JP3463222B2 JP3463222B2 JP19864094A JP19864094A JP3463222B2 JP 3463222 B2 JP3463222 B2 JP 3463222B2 JP 19864094 A JP19864094 A JP 19864094A JP 19864094 A JP19864094 A JP 19864094A JP 3463222 B2 JP3463222 B2 JP 3463222B2
- Authority
- JP
- Japan
- Prior art keywords
- starch
- weight
- parts
- biodegradable molded
- biodegradable
- 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
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Biological Depolymerization Polymers (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Description
【産業上の利用分野】この発明は、使い捨てにされてい
る各種容器類や、電子機器、家電製品などの箱詰め緩衝
材、電子部品の発送用トレー等として用いることのでき
る生分解性成形品の製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a biodegradable molded product which can be used as various disposable containers, cushioning materials for boxing electronic devices, home electric appliances and the like, and trays for shipping electronic parts. The present invention relates to a manufacturing method.
【従来の技術】従来、上記した各種容器類や緩衝材、ト
レー等の多くは、石油化学製品であるプラスチックで製
造されている。プラスチックは、加工が容易であり、し
かも安価で軽量であり、可塑性が高く且つ耐水性に優れ
ている等の優位な点が多いため一般に用いられている。2. Description of the Related Art Conventionally, most of the above-mentioned various containers, cushioning materials, trays, etc. are made of plastic which is a petrochemical product. Plastic is generally used because it has many advantages such as easy processing, inexpensiveness, light weight, high plasticity, and excellent water resistance.
【発明が解決しようとする課題】しかしながら、枯渇が
予想される化石資源を原料とする石油化学製品を大量に
消費し続けている現代社会の生活形態は、同時に大量の
廃棄ガスと廃棄物を産出し、地球環境を日に日に汚染し
続けている。特に、上記した各種容器類や緩衝材、トレ
ー等の廃棄物は、焼却すると有毒ガスや高熱を発生し、
土中に埋めても分解しないため、その廃棄処理が非常に
困難であるという課題を有していた。また近年、ポリビ
ニルアルコール等の生分解性プラスチックを使用したも
のが出現しているが、このものにおいても、生分解速度
が遅いので、土中に埋めても長期間たたないと分解せ
ず、その廃棄処理に苦慮しているのが現状である。そこ
で、この発明は、上記従来の課題を解決するためになさ
れたものであり、加工が容易であると共に軽量で適度な
強度を有し、しかも生分解速度が速く廃棄処理が容易で
地球環境を汚染することのない生分解性成形品の製造方
法を提供することを目的としている。[Problems to be Solved by the Invention] However, the life style of the modern society, which continues to consume a large amount of petrochemical products made from fossil resources, which are expected to be exhausted, produces a large amount of waste gas and waste at the same time. And, it continues to pollute the global environment day by day. In particular, waste such as the above-mentioned various containers, cushioning materials, and trays generate toxic gas and high heat when incinerated,
Since it does not decompose even if it is buried in the soil, it has a problem that its disposal is very difficult. In addition, in recent years, those using biodegradable plastics such as polyvinyl alcohol have appeared, but even with this, the biodegradation rate is slow, so even if it is buried in the soil it will not decompose until a long time has passed, At present, it is difficult to dispose of it. Therefore, the present invention has been made in order to solve the above-mentioned conventional problems, and is easy to process, has a light weight and has appropriate strength, and has a high biodegradation rate and is easy to dispose of and is environmentally friendly. It is an object of the present invention to provide a method for producing a biodegradable molded article that does not contaminate.
【課題を解決するための手段】そのため、この発明の生
分解性成形品の製造方法は、澱粉に水を加え、澱粉１０
０重量部に対し生分解性プラスチックを５〜１００重量
部添加して混練混和した原料を金型に入れ、この金型の
適宜個所から蒸気を逃がしながら加圧加熱成形するもの
としている。そして、この発明の生分解性成形品の製造
方法は、前記原料の澱粉と水との割合を、澱粉１００重
量部に対し水を１００〜２００重量部とするのが好まし
い。Therefore, in the method for producing a biodegradable molded article of the present invention, water is added to starch to prepare starch 10
It is supposed that 5 to 100 parts by weight of biodegradable plastic is added to 0 parts by weight and kneaded and mixed into a metal mold, and pressure heating molding is performed while steam is allowed to escape from appropriate parts of the metal mold. Further, in the method for producing a biodegradable molded article of the present invention, it is preferable that the ratio of the raw material starch to water is 100 to 200 parts by weight with respect to 100 parts by weight of starch.
【作用】この発明の生分解性成形品の製造方法は、金型
の適宜個所から蒸気を逃がしながら加圧加熱成形してい
るため、生分解性成形品の内部が均質で緻密なポーラス
状に膨化するので、澱粉の生分解速度をより速める。そ
して、この発明の製造方法により製造した生分解性成形
品は、耐水性に優れたものとなる。In the method for producing a biodegradable molded product according to the present invention, the biodegradable molded product has a uniform and dense porous shape because the pressure-heat molding is performed while allowing steam to escape from an appropriate portion of the mold. Since it swells, it accelerates the rate of starch biodegradation. The biodegradable molded article produced by the production method of the present invention has excellent water resistance.
【実施例】以下、この発明の生分解性成形品の製造方法
について、詳細に説明する。先ず、この発明の生分解性
成形品の製造方法は、澱粉に水を加え、生分解性プラス
チックを添加して混練混和した原料を金型に入れる。次
に、前記金型の適宜個所から蒸気を逃がしながら加圧加
熱成形するものとしている。原料の澱粉は、馬鈴薯澱粉
またはタピオカ澱粉、あるいは他の各種澱粉を用いるこ
とができる。原料コストの低減には、タピオカ澱粉が有
効である。そして、生分解性成形品を各種容器やトレー
類とする場合には、前記原料は、澱粉１００重量部に対
し加水量を１００〜２００重量部としたものとし、成形
温度を１５０〜２５０°Ｃ、成形時間を１〜５分とし、
可塑性を有し強度の高い成形品とする。また、前記生分
解性プラスチックは、５〜１００重量部添加したものと
することができる。この生分解性プラスチックの添加に
より、生分解性成形品は耐水性に優れたものとなる。な
お、電子部品などの発送用トレーでは、部品重量が重い
場合はトレーに剛性が必要となるが、このような場合に
は、木粉または粉砕した古新聞などの紙の粉末を５〜１
００重量部添加すればよい。The method for producing a biodegradable molded article of the present invention will be described in detail below. First, in the method for producing a biodegradable molded article according to the present invention, water is added to starch, biodegradable plastic is added, and kneaded and mixed into a mold. Next, pressure heating molding is performed while steam is allowed to escape from appropriate portions of the mold. As the raw material starch, potato starch, tapioca starch, or other various starches can be used. Tapioca starch is effective in reducing raw material costs. When the biodegradable molded product is used in various containers and trays, the raw material is 100 to 200 parts by weight of water based on 100 parts by weight of starch, and the molding temperature is 150 to 250 ° C. , The molding time is 1 to 5 minutes,
A molded product having plasticity and high strength. The biodegradable plastic may be added in an amount of 5 to 100 parts by weight. The addition of this biodegradable plastic makes the biodegradable molded article excellent in water resistance. In the case of a tray for shipping electronic parts or the like, when the weight of the parts is heavy, the tray needs to have rigidity. In such a case, it is possible to add 5 to 1 of wood powder or pulverized paper powder such as old newspapers.
It may be added in an amount of 00 parts by weight.
【発明の効果】この発明の生分解性成形品の製造方法
は、以上に述べたように構成されており、加工が容易で
あると共に軽量で可塑性に富み適度な強度を有し、しか
も生分解速度が速く廃棄処理が容易で地球環境を汚染す
ることのない生分解性成形品を得ることができた。ま
た、この発明の製造方法で得られた生分解性成形品は、
飼料や肥料等にも混合することができるので、リサイク
ル製品としても活用することができるものとなった。Industrial Applicability The method for producing a biodegradable molded article of the present invention is configured as described above, is easy to process, is light in weight, rich in plasticity, has appropriate strength, and is biodegradable. It was possible to obtain a biodegradable molded product that is fast and easy to dispose of and does not pollute the global environment. Further, the biodegradable molded article obtained by the production method of the present invention,
Since it can be mixed with feed and fertilizer, it can be used as a recycled product.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｃ０８Ｌ 3:00 Ｃ０８Ｌ 3:00 (58)調査した分野(Int.Cl.7，ＤＢ名) C08J 5/00 - 5/24 B29C 39/00 - 39/44 B29C 43/00 - 43/58 C08J 9/00 - 9/42 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 identification code FI C08L 3:00 C08L 3:00 (58) Fields investigated (Int.Cl. 7 , DB name) C08J 5/00-5/24 B29C 39/00-39/44 B29C 43/00-43/58 C08J 9/00-9/42
Claims (2)
し生分解性プラスチックを５〜１００重量部添加して混
練混和した原料を金型に入れ、この金型の適宜個所から
蒸気を逃がしながら加圧加熱成形したことを特徴とする
生分解性成形品の製造方法。1. Water is added to the starch so that 100 parts by weight of the starch are added to the starch.
A biodegradable molded article characterized by adding 5 to 100 parts by weight of biodegradable plastic, kneading and kneading the raw material into a mold, and pressurizing and heating while allowing steam to escape from an appropriate part of the mold. Manufacturing method.
００重量部に対し水を１００〜２００重量部としたこと
を特徴とする請求項１記載の生分解性成形品の製造方
法。2. The ratio of the starting starch to water is starch 1
The method for producing a biodegradable molded article according to claim 1, wherein the amount of water is 100 to 200 parts by weight with respect to 00 parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19864094A JP3463222B2 (en) | 1994-08-23 | 1994-08-23 | Method for producing biodegradable molded articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19864094A JP3463222B2 (en) | 1994-08-23 | 1994-08-23 | Method for producing biodegradable molded articles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0859844A JPH0859844A (en) | 1996-03-05 |
| JP3463222B2 true JP3463222B2 (en) | 2003-11-05 |
Family
ID=16394578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19864094A Expired - Fee Related JP3463222B2 (en) | 1994-08-23 | 1994-08-23 | Method for producing biodegradable molded articles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3463222B2 (en) |
-
1994
- 1994-08-23 JP JP19864094A patent/JP3463222B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0859844A (en) | 1996-03-05 |
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