JPH06156524A - Container and tool made of biodegradable thermoplastic resin - Google Patents
Container and tool made of biodegradable thermoplastic resinInfo
- Publication number
- JPH06156524A JPH06156524A JP33813592A JP33813592A JPH06156524A JP H06156524 A JPH06156524 A JP H06156524A JP 33813592 A JP33813592 A JP 33813592A JP 33813592 A JP33813592 A JP 33813592A JP H06156524 A JPH06156524 A JP H06156524A
- Authority
- JP
- Japan
- Prior art keywords
- thermoplastic resin
- biodegradable thermoplastic
- container
- tools
- foam
- 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.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Landscapes
- Wrappers (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、安価で、生分解性速度
が大きく、自然環境中に放置すると微生物によって分解
し、焼却等人工的に分解する必要のない生分解性の熱可
塑性樹脂製容器及び道具に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is made of a biodegradable thermoplastic resin which is inexpensive, has a high rate of biodegradability, is decomposed by microorganisms when left in a natural environment and does not need to be artificially decomposed by incineration or the like. It concerns containers and tools.
【０００２】[0002]
【従来の技術】従来、自然環境中に放置すると微生物に
よって分解し、焼却等人工的に分解する必要のない生分
解性容器及び道具（例えば食器類・食品包装材・玩具、
その他農業・漁業各種産業用容器・道具類）として、疎
水性の生分解性熱可塑性樹脂を成形してつくったものが
ある。2. Description of the Related Art Conventionally, biodegradable containers and tools (for example, tableware, food packaging materials, toys, etc.) that decompose by microorganisms when left in a natural environment and do not need to be artificially decomposed by incineration.
Other containers and tools for various agricultural and fishery industries are made by molding a hydrophobic biodegradable thermoplastic resin.
【０００３】また、汎用プラスチックにでんぷんなどの
天然物あるいは生分解性のプラスチックを練り込み自然
環境中に放置すると、崩壊するものがある。[0003] In addition, when a natural product such as starch or a biodegradable plastic is kneaded into a general-purpose plastic and left to stand in a natural environment, some of them may collapse.
【０００４】しかしながら、上記疎水性の生分解性熱可
塑性樹脂は価格が高く、従ってそれを使用して製造した
製品は高く、しかも生分解性速度が小さいため、放置し
ていてもなかなか分解せず、一般になかなか普及しない
と言う問題点がある。However, since the above-mentioned hydrophobic biodegradable thermoplastic resin is expensive, the products produced by using it are expensive and the biodegradability is low, so that they do not easily decompose even if they are left standing. However, there is a problem that it is not popular in general.
【０００５】また、天然物あるいは生分解性プラスチッ
クを練り込んだ生崩解性のものは、完全には分解しない
うえ、分解残滓についての安全性の問題点もある。In addition, natural products or biodegradable products prepared by kneading biodegradable plastics are not completely decomposed, and there is a safety problem regarding decomposition residues.
【０００６】[0006]
【発明が解決しようとする課題】解決しようとする問題
点は、原料として疎水性の生分解性熱可塑性樹脂を使っ
て製造した容器及び道具は価格が高く、生分解速度が小
さいため、生分解に時間が掛かることである。The problem to be solved is that containers and tools manufactured by using a hydrophobic biodegradable thermoplastic resin as a raw material are expensive and have a low biodegradation rate. It takes time.
【０００７】[0007]
【課題を解決するための手段】本発明は、生分解性の熱
可塑性樹脂を成形した容器及び道具であって、気泡構造
を有する生分解性の熱可塑性樹脂からなるものである。SUMMARY OF THE INVENTION The present invention is a container and a tool formed by molding a biodegradable thermoplastic resin, which is made of a biodegradable thermoplastic resin having a cell structure.
【０００８】[0008]
【実施例】実施例について図により説明すると、先ず生
分解性の熱可塑性樹脂であるポリカプロラクトン（ダイ
セル化学工業製ＰＬＡＣＣＥＬ Ｈ−７）１０００ｇを
８５℃，３時間掛けて加熱融解させ、これに発泡剤とし
てアゾジカルボンアミドを２０ｇ加え、温度を約７０℃
に保持し、混練りを行い、ポリカプロラクトンにアゾジ
カルボンアミドが均一に分散したところで、シート状に
切出し、厚さ４ｍｍ、縦４０ｍｍ，横４０ｍｍのコンパ
ウンド１０を製造する。これを下型２０上で２１０℃、
１５分間加熱し、発泡させると、見掛け密度約０．３ｇ
／ｃｍ3の発泡体３０が得られる。この状態で上型４０
を重ね、プレス成形すると、見掛け密度約０．３ｇ／ｃ
ｍ3の製品５０が得られる。なお、生分解性の熱可塑性
樹脂として、ポリカプロラクトンの他、ポリグリコリ
ド、微生物産のポリヒドロキシアルカノエート等を用い
ることが出来る。なお、樹脂の材質を改善するために、
必要に応じて、可塑剤・フィラー等を添加することが出
来る。EXAMPLES Examples will be described with reference to the drawings. First, 1000 g of polycaprolactone (PLACCEL H-7 manufactured by Daicel Chemical Industries, Ltd.), which is a biodegradable thermoplastic resin, is heated and melted at 85 ° C. for 3 hours, and then foamed. Add 20 g of azodicarbonamide as an agent and raise the temperature to about 70 ° C.
The azodicarbonamide is uniformly dispersed in polycaprolactone, and the mixture is cut into a sheet to prepare a compound 10 having a thickness of 4 mm, a length of 40 mm, and a width of 40 mm. 210 ° C. on the lower mold 20,
When heated for 15 minutes to foam, an apparent density of about 0.3g
A foam body 30 of / cm 3 is obtained. Upper mold 40 in this state
When stacked and press molded, an apparent density of about 0.3 g / c
A product 50 of m 3 is obtained. As the biodegradable thermoplastic resin, polyglycolide, microbial polyhydroxyalkanoate, etc. can be used in addition to polycaprolactone. In addition, in order to improve the resin material,
If necessary, a plasticizer, a filler, etc. can be added.
【０００９】[0009]
【作用】得られた製品は、気泡構造を有し、見掛け比重
が小さく、製品容積当りに要する生分解性の熱可塑性樹
脂量が減少し、コストが低下すると共に、比表面積が大
きいため、微生物との接触度合いが高く、生分解速度が
大きく、放置しておくと、短期間に生分解する。発泡体
３０としては、独立気泡発泡体３１・連続気泡発泡体３
２のいずれも製造可能であるが、外部に通じる連続気泡
発泡体３２構造のものが、生分解速度が高い。しかし、
気密・液密性に欠けるため、気体・液体を透過させない
ためには表面にスキン層又はコーティング層３３を形成
する必要がある。The obtained product has a cellular structure, an apparent specific gravity is small, the amount of biodegradable thermoplastic resin required per product volume is reduced, the cost is reduced, and the specific surface area is large. It has a high degree of contact with, has a high rate of biodegradation, and if left alone, biodegrades in a short period of time. As the foam 30, the closed cell foam 31, the open cell foam 3
Both of the two can be produced, but the one having the structure of the open cell foam 32 leading to the outside has a high biodegradation rate. But,
Since it lacks airtightness and liquidtightness, it is necessary to form a skin layer or coating layer 33 on the surface in order to prevent gas and liquid from permeating.
【００１０】[0010]
【発明の効果】本発明は以上のように構成されるため、
安価であって、耐水性に優れ、しかも生分解速度が大き
く、使用後は自然環境中に放置して、何等、手を加えな
くても、微生物によって短期間に分解し、使用者の要求
に応えるものである。Since the present invention is constructed as described above,
It is inexpensive, has excellent water resistance, and has a high biodegradation rate. After use, it is left in the natural environment and decomposed by microorganisms in a short period of time without any modification, and it meets the needs of users. To respond.
【図１】本発明の製品のうち、独立気泡構造を有する容
器を示す断面図である。FIG. 1 is a cross-sectional view showing a container having a closed cell structure in a product of the present invention.
【図２】連続気泡構造を有する容器を示す断面図であ
る。FIG. 2 is a cross-sectional view showing a container having an open cell structure.
【図３】本発明の製造工程を示す工程図である。FIG. 3 is a process drawing showing the manufacturing process of the present invention.
１０ コンパウンド ２０ 下型 ３０ 発泡体 ３１ 独立気泡発泡体 ３２ 連続気泡発泡体 ３３ スキン層又はコーティング層 ４０ 上型 ５０ 製品 10 Compound 20 Lower Mold 30 Foam 31 Closed Cell Foam 32 Open Cell Foam 33 Skin or Coating Layer 40 Upper Mold 50 Products
───────────────────────────────────────────────────── フロントページの続き (72)発明者 棚谷 彰 広島市西区三篠町２丁目２番８号西川ゴム 工業株式会社内 (72)発明者 橋本 邦彦 広島市西区三篠町２丁目２番８号西川ゴム 工業株式会社内 (72)発明者 山本 博一 広島市西区三篠町２丁目２番８号西川ゴム 工業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akira Tanaya 2-2-8, Misonomachi, Nishi-ku, Hiroshima City Nishikawa Rubber Industrial Co., Ltd. Inside the Rubber Industry Co., Ltd. (72) Inventor Hirokazu Yamamoto 2-2-8 Misonomachi, Nishi-ku, Hiroshima City Nishikawa Rubber Industry Co., Ltd.
Claims (3)
及び道具であって、独立気泡構造を有する生分解性の熱
可塑性樹脂製容器及び道具。1. A container and a tool molded of a biodegradable thermoplastic resin, the container and the tool being made of a biodegradable thermoplastic resin having a closed cell structure.
及び道具であって、連続気泡構造を有する生分解性の熱
可塑性樹脂製容器及び道具。2. A container and a tool made of a biodegradable thermoplastic resin, the container and the tool being made of a biodegradable thermoplastic resin having an open cell structure.
の生分解性の熱可塑性樹脂製容器及び道具。3. The biodegradable thermoplastic resin container and tool according to claim 2, wherein a skin layer is formed on the surface layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33813592A JP3160607B2 (en) | 1992-11-24 | 1992-11-24 | Biodegradable thermoplastic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33813592A JP3160607B2 (en) | 1992-11-24 | 1992-11-24 | Biodegradable thermoplastic device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06156524A true JPH06156524A (en) | 1994-06-03 |
| JP3160607B2 JP3160607B2 (en) | 2001-04-25 |
Family
ID=18315244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33813592A Expired - Lifetime JP3160607B2 (en) | 1992-11-24 | 1992-11-24 | Biodegradable thermoplastic device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3160607B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006103928A1 (en) * | 2005-03-28 | 2006-10-05 | Kaneka Corporation | Process for producing extruded foam of polyhydroxyalkanoate resin and extruded foam obtained by the process |
| WO2006103926A1 (en) * | 2005-03-28 | 2006-10-05 | Kaneka Corporation | Process for producing extruded polyhydroxyalkanoate resin foam |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2476797A1 (en) * | 2002-02-21 | 2003-08-28 | Nissei Kabushiki Kaisha | Tightly covered container |
-
1992
- 1992-11-24 JP JP33813592A patent/JP3160607B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006103928A1 (en) * | 2005-03-28 | 2006-10-05 | Kaneka Corporation | Process for producing extruded foam of polyhydroxyalkanoate resin and extruded foam obtained by the process |
| WO2006103926A1 (en) * | 2005-03-28 | 2006-10-05 | Kaneka Corporation | Process for producing extruded polyhydroxyalkanoate resin foam |
| JPWO2006103926A1 (en) * | 2005-03-28 | 2008-09-04 | 株式会社カネカ | Method for producing extruded product of polyhydroxyalkanoate resin |
| JPWO2006103928A1 (en) * | 2005-03-28 | 2008-09-04 | 株式会社カネカ | Process for producing extruded polyhydroxyalkanoate resin and extruded foam obtained from the process |
| JP4653162B2 (en) * | 2005-03-28 | 2011-03-16 | 株式会社カネカ | Method for producing extruded product of polyhydroxyalkanoate resin |
| JP4733694B2 (en) * | 2005-03-28 | 2011-07-27 | 株式会社カネカ | Process for producing extruded polyhydroxyalkanoate resin and extruded foam obtained from the process |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3160607B2 (en) | 2001-04-25 |
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