JPH04334448A - Biodegradable composite material and manufacture thereof - Google Patents
Biodegradable composite material and manufacture thereofInfo
- Publication number
- JPH04334448A JPH04334448A JP3135754A JP13575491A JPH04334448A JP H04334448 A JPH04334448 A JP H04334448A JP 3135754 A JP3135754 A JP 3135754A JP 13575491 A JP13575491 A JP 13575491A JP H04334448 A JPH04334448 A JP H04334448A
- Authority
- JP
- Japan
- Prior art keywords
- polylactic acid
- paper
- base material
- derivative
- composite material
- 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
- 239000002131 composite material Substances 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 239000000463 material Substances 0.000 claims abstract description 28
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 20
- 239000004626 polylactic acid Substances 0.000 claims abstract description 20
- 239000000835 fiber Substances 0.000 claims abstract description 10
- 235000013311 vegetables Nutrition 0.000 claims abstract description 10
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000011247 coating layer Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 6
- 230000000704 physical effect Effects 0.000 abstract description 6
- 229920001577 copolymer Polymers 0.000 abstract description 5
- 235000013305 food Nutrition 0.000 abstract description 5
- 239000005022 packaging material Substances 0.000 abstract description 5
- JVTAAEKCZFNVCJ-REOHCLBHSA-N L-lactic acid Chemical compound C[C@H](O)C(O)=O JVTAAEKCZFNVCJ-REOHCLBHSA-N 0.000 abstract description 4
- 244000005700 microbiome Species 0.000 abstract description 4
- 229920000742 Cotton Polymers 0.000 abstract description 2
- JVTAAEKCZFNVCJ-UWTATZPHSA-N D-lactic acid Chemical compound C[C@@H](O)C(O)=O JVTAAEKCZFNVCJ-UWTATZPHSA-N 0.000 abstract description 2
- 240000000907 Musa textilis Species 0.000 abstract description 2
- 229940022769 d- lactic acid Drugs 0.000 abstract description 2
- 229920001432 poly(L-lactide) Polymers 0.000 abstract description 2
- 229920000642 polymer Polymers 0.000 abstract description 2
- 239000002023 wood Substances 0.000 abstract 1
- 239000000123 paper Substances 0.000 description 18
- 229920003023 plastic Polymers 0.000 description 9
- 239000004033 plastic Substances 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- -1 polyethylene Polymers 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- 239000013502 plastic waste Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 229920006238 degradable plastic Polymers 0.000 description 2
- 239000002655 kraft paper Substances 0.000 description 2
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 239000000560 biocompatible material Substances 0.000 description 1
- 229920000704 biodegradable plastic Polymers 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 description 1
- 235000013410 fast food Nutrition 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000005003 food packaging material Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000003504 photosensitizing agent Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
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)
- Laminated Bodies (AREA)
- Polyesters Or Polycarbonates (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は生分解性および生体適合
性を有する複合材料に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to biodegradable and biocompatible composite materials.
【０００２】0002
【従来の技術および課題】近年、ポリ塩化ビニル、ポリ
エチレン、ポリプロピレンなどの各種プラスチックが食
品などの包装材料、各種プラスチック製品などとして広
く用いられており、プラスチック廃棄物の量は増加の一
途をたどっている。プラスチック廃棄物は土中に埋めて
も微生物による生分解を受けず、環境の美観を損なう。
また、分解しないため埋立て処理を行う場合は用地の寿
命が短く、焼却処理にあたっては高性能焼却炉の不足も
深刻であるなど、大きな社会問題となっている。また、
プラスチックの焼却にあたっては有毒物の発生による二
次公害の懸念もある。一方、廃棄プラスチックを再処理
して利用することも検討されてはいるが未だ実用の段階
には至っていない。このようにプラスチック廃棄物がも
たらす諸問題は早急な解決の必要に迫られている。[Prior Art and Problems] In recent years, various plastics such as polyvinyl chloride, polyethylene, and polypropylene have been widely used as packaging materials for foods and other various plastic products, and the amount of plastic waste continues to increase. There is. Even if plastic waste is buried in the ground, it does not undergo biodegradation by microorganisms, damaging the aesthetics of the environment. In addition, because it does not decompose, the lifespan of the site is short when it is disposed of in a landfill, and there is a serious shortage of high-performance incinerators when incinerating it, which has become a major social problem. Also,
There are also concerns about secondary pollution caused by the generation of toxic substances when incinerating plastics. On the other hand, reprocessing and reusing waste plastics has been considered, but this has not yet reached the stage of practical use. The problems brought about by plastic waste are in urgent need of solutions.
【０００３】このような社会的要請にもとづき使用後は
速やかに分解し、環境汚染を引き起こさない分解性のプ
ラスチックが強く望まれている。このような分解性プラ
スチックとしては、ポリエチレンなどに金属塩や光増感
剤などを添加した組成物、あるいはポリエチレンの主鎖
に一酸化炭素を導入した光分解性プラスチックがある。
このような光分解性のプラスチックは光の照射により劣
化してぼろぼろになり、ポリマーのまま微粒子となる。
しかしながら、数年の範囲では二酸化炭素と水にまでに
は分解が進行しない。このため、埋め立て地の延命には
役立たず、自然界への悪影響も減少せず、プラスチック
のリサイクルも困難となるなど、その有効性は疑問であ
る。Based on such social demands, there is a strong desire for degradable plastics that quickly decompose after use and do not cause environmental pollution. Examples of such degradable plastics include compositions in which metal salts, photosensitizers, etc. are added to polyethylene, and photodegradable plastics in which carbon monoxide is introduced into the main chain of polyethylene. Such photodegradable plastics deteriorate and become crumbly when exposed to light, leaving the polymer as fine particles. However, decomposition does not progress to carbon dioxide and water within a few years. For this reason, its effectiveness is questionable, as it does not extend the life of landfills, does not reduce the negative impact on the natural world, and makes it difficult to recycle plastic.
【０００４】これに対して、植物性繊維を主原料とする
織布や紙等の基材は土中で生分解され環境に対する負荷
が少ないが、耐水性、耐油性、気密性等が充分でなく包
材などとしての使用範囲が著しく制約される。従って、
これらの基材を用いて包材を製造するには、一般にポリ
エチレンなどのプラスチックを被覆またはラミネートし
て使用する。このような複合材料は非分解性のため、や
はり廃棄処理に問題が残る。On the other hand, base materials such as woven fabrics and paper that are mainly made from vegetable fibers are biodegradable in the soil and have less impact on the environment, but they do not have sufficient water resistance, oil resistance, airtightness, etc. This severely limits the scope of its use as packaging materials. Therefore,
When manufacturing packaging materials using these base materials, they are generally coated or laminated with plastic such as polyethylene. Since such composite materials are non-degradable, disposal remains a problem.
【０００５】生分解性プラスチックは使用済みのプラス
チックが土中や水中の微生物の作用により二酸化炭素と
水に分解され、無害な状態で自然に還元されるものであ
る。本発明の目的は耐水性、耐油性等の物性に優れ、か
つ生体適合性ならびに生分解性に優れた複合材料を提供
することにある。[0005] Biodegradable plastics are used plastics that are decomposed into carbon dioxide and water by the action of microorganisms in soil or water, and are returned to nature in a harmless state. An object of the present invention is to provide a composite material that has excellent physical properties such as water resistance and oil resistance, as well as excellent biocompatibility and biodegradability.
【０００６】本発明の目的は、ポリ乳酸またはその誘導
体を植物性繊維を主原料とする基材に被覆することによ
り、耐水性、耐油性等の物性に優れ、かつ生体適合性な
らびに生分解性に優れた複合材料を提供することにある
。The object of the present invention is to coat polylactic acid or its derivatives on a base material mainly made of vegetable fibers, thereby achieving excellent physical properties such as water resistance and oil resistance, as well as biocompatibility and biodegradability. Our goal is to provide superior composite materials for
【０００７】[0007]
【課題を解決するための手段】本発明は植物性繊維を含
有する基材の表面にポリ乳酸またはその誘導体を被覆し
た生分解性複合材料、およびその製造法を提供するもの
である。特に、本発明は表面にポリ乳酸またはその誘導
体を被覆した包装用紙およびこれを用いた包装容器を提
供するものである。[Means for Solving the Problems] The present invention provides a biodegradable composite material in which the surface of a base material containing vegetable fibers is coated with polylactic acid or a derivative thereof, and a method for producing the same. In particular, the present invention provides a packaging paper whose surface is coated with polylactic acid or a derivative thereof, and a packaging container using the same.
【０００８】本発明の複合材料は、疎水性生体適合材料
であるポリ乳酸を熱溶融法により植物性繊維を主原料と
する基材に被覆することが好ましく、比較的短期の耐水
性および耐油性に優れ、かつ生分解性、生体適合性が高
い。[0008] The composite material of the present invention is preferably coated with polylactic acid, which is a hydrophobic biocompatible material, on a base material mainly made of vegetable fibers by a heat melting method, and has relatively short-term water resistance and oil resistance. It has excellent biodegradability and biocompatibility.
【０００９】本発明に用いられる基材としては、各種の
植物性繊維を主成分として含有する材料が用いられる。
例えば、木材パルプからなる上質紙、障子紙、クラフト
紙などの紙；綿、マニラ麻などからなる各種の糸、ロー
プ；またこれらから製造される容器、網などが挙げられ
る。[0009] As the base material used in the present invention, a material containing various vegetable fibers as a main component is used. Examples include paper such as high-quality paper made of wood pulp, shoji paper, and kraft paper; various threads and ropes made of cotton, Manila hemp, etc.; and containers and nets made from these materials.
【００１０】基材に被覆されるポリ乳酸はポリＤ−乳酸
、ポリＬ−乳酸、ポリＤ，Ｌ−乳酸のいずれであっても
よい。ポリ乳酸の分子量は耐水性、生分解性、コストの
点から１０万〜１００万であるのが好ましい。またポリ
乳酸の誘導体を用いてもよく、例えば、ポリ乳酸−グリ
コール酸共重合体、ポリ乳酸−グリセリン共重合体、ポ
リ乳酸−カプロラクタム共重合体などが用いられる。
これらの共重合体とすることにより分解速度など種々の
物性の調整を行うことができる。The polylactic acid coated on the substrate may be any of poly-D-lactic acid, poly-L-lactic acid, and poly-D,L-lactic acid. The molecular weight of polylactic acid is preferably 100,000 to 1,000,000 in terms of water resistance, biodegradability, and cost. Further, derivatives of polylactic acid may be used, such as polylactic acid-glycolic acid copolymer, polylactic acid-glycerin copolymer, polylactic acid-caprolactam copolymer, and the like. By using these copolymers, various physical properties such as decomposition rate can be adjusted.
【００１１】基材の表面に被覆材であるポリ乳酸または
その誘導体を被覆するには、基材に被覆材の粉体を溶着
させる方法、基材を被覆材の溶液中に浸漬する方法、被
覆材の溶液を基材にスプレーする方法などがある。ポリ
乳酸およびその誘導体は、クロロホルムなどの塩素系有
機溶剤に溶解するが、これらは毒性を有し環境面への配
慮が必要であり取り扱いに注意を要する。このため溶媒
を用いずに熱溶融法により基材への被覆を行うのが好ま
しい。[0011] In order to coat the surface of the base material with polylactic acid or its derivative as a coating material, there are methods such as welding powder of the coating material to the base material, immersing the base material in a solution of the coating material, and coating. There are methods such as spraying a solution of the material onto the base material. Polylactic acid and its derivatives are soluble in chlorinated organic solvents such as chloroform, but these are toxic and require consideration for the environment and must be handled with care. For this reason, it is preferable to coat the base material by a hot melting method without using a solvent.
【００１２】溶着法により本発明の複合材料を製造する
には、基材の上にポリ乳酸の粉末を散布しこれをホット
プレスなどの装置を用いて溶着させる。かかるホットプ
レスによる溶着を行うには、紙などの基材の上に粉体を
散布して、これを温度１８０℃〜２２０℃、圧力１００
〜２００ｋｇ／ｃｍ２にて溶着する。また、浸漬法では
ポリ乳酸溶液に基材を浸漬し、常温で乾燥させる。[0012] To produce the composite material of the present invention by the welding method, polylactic acid powder is sprinkled onto a base material and then welded using a device such as a hot press. To perform such hot press welding, powder is sprinkled onto a base material such as paper, and the powder is heated at a temperature of 180°C to 220°C and a pressure of 100°C.
Weld at ~200kg/cm2. In addition, in the dipping method, the base material is immersed in a polylactic acid solution and dried at room temperature.
【００１３】このようにして、耐水性、耐油性に優れた
生分解性複合材料が得られる。紙に被覆した複合材料は
特に食品用の包装紙、ファーストフードなどの容器とし
て好ましい。[0013] In this way, a biodegradable composite material with excellent water resistance and oil resistance can be obtained. Composite materials coated on paper are particularly preferred as wrapping paper for food, containers for fast food, and the like.
【００１４】[0014]
【実施例】つぎに本発明を実施例にもとづきさらに具体
的に説明する。EXAMPLES Next, the present invention will be explained in more detail based on examples.
【００１５】［実施例１］ポリ乳酸（分子量３０万以上
）の粉末（１００ｍｅｓｈ）３００ｍｇをケント紙（２
００ｍｍ×２００ｍｍ）に均一に散布した。これをホッ
トプレス（２００℃、１５０ｋｇ／ｃｍ２）の間に挾み
、溶融プレスして紙にポリ乳酸をコーティングした。得
られたコート面は、均一で平滑であった。得られた複合
紙の物性は次のとおりである。[Example 1] 300 mg of powder (100 mesh) of polylactic acid (molecular weight 300,000 or more) was placed on Kent paper (2
00 mm x 200 mm). This was placed in a hot press (200° C., 150 kg/cm 2 ) and melt-pressed to coat the paper with polylactic acid. The resulting coated surface was uniform and smooth. The physical properties of the obtained composite paper are as follows.
【００１６】
吸水度（ＪＩＳ Ｐ８１４０）
０．１ｇ／ｍ２ 撥水度（
ＪＩＳ Ｐ８１３７） Ｒ１
０ 耐油性（ＪＩＳ Ｐ８１４６）
２０ｈ以上 透湿度（Ｊ
ＩＳ Ｚ０２０８） ３０ｇ
／ｍ２・２４ｈ以下 耐ブロッキング度（Ｊ
ＩＳ Ｚ１５１５） ５０℃以上得られた複合紙は
塩化ビニリデン加工紙、ポリエチレン加工紙と同等ある
いはそれ以上の耐水性、耐油性を有しており、食品包装
材料などに適した生分解性材料である。Water absorption (JIS P8140)
0.1g/m2 Water repellency (
JIS P8137) R1
0 Oil resistance (JIS P8146)
20h or more Moisture permeability (J
IS Z0208) 30g
/m2・24h or less Blocking resistance (J
IS Z1515) Composite paper obtained at 50°C or higher has water and oil resistance equivalent to or better than vinylidene chloride-processed paper and polyethylene-processed paper, and is a biodegradable material suitable for food packaging materials, etc. .
【００１７】［実施例２］コート量４３．６ｇ／ｍ２の
ボール紙クラフト紙を用いて実施例１と全く同様に処理
したところ同様の形状の加工紙が得られた。[Example 2] A cardboard kraft paper with a coating amount of 43.6 g/m 2 was treated in exactly the same manner as in Example 1, and a processed paper having the same shape was obtained.
【００１８】［実施例３］５％ポリ乳酸／塩化メチレン
溶液を和紙（２０ｃｍ×３０ｃｍ）に含浸させ、室温に
て風乾した。（コート量４６．６ｇ／ｍ２）。得られた
複合紙は吸水量０．１ｇ／ｍ２、耐油性２０ｈ以上であ
った。[Example 3] Japanese paper (20 cm x 30 cm) was impregnated with a 5% polylactic acid/methylene chloride solution and air-dried at room temperature. (Coating amount: 46.6 g/m2). The resulting composite paper had a water absorption of 0.1 g/m2 and an oil resistance of 20 hours or more.
【００１９】[0019]
【発明の効果】本発明の複合材料は耐水性、耐油性等の
物性が高く、かつ生分解性に優れている。このため、使
用後破棄されると土中、水中の微生物の働きにより自然
界で生分解され環境を汚染しない。本発明の複合材料は
特に食品包装紙、食品包装容器、医療用包装材料などと
して好ましい。[Effects of the Invention] The composite material of the present invention has high physical properties such as water resistance and oil resistance, and is excellent in biodegradability. Therefore, when discarded after use, it is biodegraded in nature by the action of microorganisms in the soil and water, and does not pollute the environment. The composite material of the present invention is particularly preferred as food wrapping paper, food packaging containers, medical packaging materials, and the like.
Claims (3)
リ乳酸またはその誘導体を被覆した生分解性複合材料。1. A biodegradable composite material comprising a base material containing vegetable fibers coated with polylactic acid or a derivative thereof.
いた包装容器。2. A packaging container using the biodegradable composite material according to claim 1.
リ乳酸またはその誘導体を溶融して被覆層を設けること
を特徴とする生分解性複合材料の製造法。3. A method for producing a biodegradable composite material, which comprises providing a coating layer by melting polylactic acid or a derivative thereof on the surface of a base material containing vegetable fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13575491A JP2513091B2 (en) | 1991-05-10 | 1991-05-10 | Biodegradable composite material and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13575491A JP2513091B2 (en) | 1991-05-10 | 1991-05-10 | Biodegradable composite material and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04334448A true JPH04334448A (en) | 1992-11-20 |
| JP2513091B2 JP2513091B2 (en) | 1996-07-03 |
Family
ID=15159086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13575491A Expired - Lifetime JP2513091B2 (en) | 1991-05-10 | 1991-05-10 | Biodegradable composite material and manufacturing method thereof |
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| Country | Link |
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| JP (1) | JP2513091B2 (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07257660A (en) * | 1994-03-22 | 1995-10-09 | Mitsui Toatsu Chem Inc | Packaging film for food |
| WO1996025855A1 (en) * | 1995-02-24 | 1996-08-29 | Ecological Chemical Products Company | Composition and method for packaging moisture-containing foodstuffs |
| JPH08252895A (en) * | 1995-03-16 | 1996-10-01 | Mitsubishi Plastics Ind Ltd | Decomposable laminated material |
| WO2001049584A1 (en) * | 2000-01-06 | 2001-07-12 | Yamanaka Ind. Co. Ltd. | Antibacterial/biodegradable extraction vessel |
| WO2001051545A1 (en) * | 2000-01-12 | 2001-07-19 | Mitsubishi Plastics Inc. | Biodegradable film and box having window with film |
| JP2003212270A (en) * | 2002-10-30 | 2003-07-30 | Mitsubishi Plastics Ind Ltd | Container for seeing through contents |
| EP1483975A1 (en) * | 2003-06-05 | 2004-12-08 | PURAC Biochem BV | Antimicrobial composition comprising a mixture of lactic acid or a derivative thereof and an inorganic acid |
| JP2006001651A (en) * | 2005-08-12 | 2006-01-05 | Mitsubishi Plastics Ind Ltd | Compound natural material container |
| JP2006104622A (en) * | 2004-10-07 | 2006-04-20 | Miyoshi Oil & Fat Co Ltd | Recycled paper |
| US7132490B2 (en) | 2002-03-29 | 2006-11-07 | Mitshi Chemicals, Inc. | Lactic acid-based resin composition |
| US7727568B2 (en) | 2003-06-05 | 2010-06-01 | Purac Biochem B.V. | Antimicrobial composition comprising a mixture of lactic acid or a derivative thereof and an inorganic acid |
| EP2450487A1 (en) * | 2010-11-05 | 2012-05-09 | Arjowiggins Palalda SAS | Biodegradable sterilization wrap |
| WO2013182757A1 (en) * | 2012-06-08 | 2013-12-12 | Upm-Kymmene Corporation | A method and a system for manufacturing packaging material, as well as packaging material and a package |
| JP2014531485A (en) * | 2011-09-18 | 2014-11-27 | バイオ プラズマー リミテッド | Biodegradable composition and use thereof |
| CN106336633A (en) * | 2016-08-19 | 2017-01-18 | 王胜利 | Mushroom package bag |
| WO2020025473A1 (en) * | 2018-07-31 | 2020-02-06 | Sig Technology Ag | Flat composite, in particular for producing dimensionally stable food containers, containing an outer polymer layer with a polyester |
| WO2020081477A1 (en) * | 2018-10-15 | 2020-04-23 | Danimer Bioplastics, Inc. | Biopolymer coated fiber food service items |
| US11730156B2 (en) * | 2018-04-06 | 2023-08-22 | Loren James Wilcox | Renewable natural fiber fishing line |
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| FI126885B (en) * | 2011-05-31 | 2017-07-14 | Stora Enso Oyj | Use of terpene phenol resin in extrusion coating |
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| US1995970A (en) * | 1931-04-04 | 1935-03-26 | Du Pont | Polymeric lactide resin |
| US2362511A (en) * | 1939-11-21 | 1944-11-14 | Du Pont | Modified glycolide resins |
| US3844987A (en) * | 1972-07-28 | 1974-10-29 | Union Carbide Corp | Contour adapted passenger loading ramp biodegradable transplanter containers |
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| JPH01198552A (en) * | 1987-11-19 | 1989-08-10 | Solvay & Cie | Article made of lactic acid polymer usable as biodegradable artificial prosthesis and production thereof |
| JPH02222421A (en) * | 1989-02-23 | 1990-09-05 | Chuko Kasei Kogyo Kk | Biodegradable composite material |
| JPH06500603A (en) * | 1990-09-26 | 1994-01-20 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | Cellulosic pulp bonded with polyhydroxy acid resin |
| US7588412B2 (en) * | 2005-07-28 | 2009-09-15 | General Electric Company | Cooled shroud assembly and method of cooling a shroud |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1995970A (en) * | 1931-04-04 | 1935-03-26 | Du Pont | Polymeric lactide resin |
| US2362511A (en) * | 1939-11-21 | 1944-11-14 | Du Pont | Modified glycolide resins |
| US3844987A (en) * | 1972-07-28 | 1974-10-29 | Union Carbide Corp | Contour adapted passenger loading ramp biodegradable transplanter containers |
| US4057537A (en) * | 1975-01-28 | 1977-11-08 | Gulf Oil Corporation | Copolymers of L-(-)-lactide and epsilon caprolactone |
| JPH01198552A (en) * | 1987-11-19 | 1989-08-10 | Solvay & Cie | Article made of lactic acid polymer usable as biodegradable artificial prosthesis and production thereof |
| JPH02222421A (en) * | 1989-02-23 | 1990-09-05 | Chuko Kasei Kogyo Kk | Biodegradable composite material |
| JPH06500603A (en) * | 1990-09-26 | 1994-01-20 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | Cellulosic pulp bonded with polyhydroxy acid resin |
| US7588412B2 (en) * | 2005-07-28 | 2009-09-15 | General Electric Company | Cooled shroud assembly and method of cooling a shroud |
Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07257660A (en) * | 1994-03-22 | 1995-10-09 | Mitsui Toatsu Chem Inc | Packaging film for food |
| WO1996025855A1 (en) * | 1995-02-24 | 1996-08-29 | Ecological Chemical Products Company | Composition and method for packaging moisture-containing foodstuffs |
| JPH08252895A (en) * | 1995-03-16 | 1996-10-01 | Mitsubishi Plastics Ind Ltd | Decomposable laminated material |
| US6742660B2 (en) | 2000-01-06 | 2004-06-01 | Yamanaka Ind. | Antibacterial and biodegradable extracting container |
| WO2001049584A1 (en) * | 2000-01-06 | 2001-07-12 | Yamanaka Ind. Co. Ltd. | Antibacterial/biodegradable extraction vessel |
| AU767321B2 (en) * | 2000-01-06 | 2003-11-06 | Unitika Fibers Ltd. | Antibacterial/biodegradable extraction vessel |
| WO2001051545A1 (en) * | 2000-01-12 | 2001-07-19 | Mitsubishi Plastics Inc. | Biodegradable film and box having window with film |
| US7132490B2 (en) | 2002-03-29 | 2006-11-07 | Mitshi Chemicals, Inc. | Lactic acid-based resin composition |
| JP2003212270A (en) * | 2002-10-30 | 2003-07-30 | Mitsubishi Plastics Ind Ltd | Container for seeing through contents |
| EP1483975A1 (en) * | 2003-06-05 | 2004-12-08 | PURAC Biochem BV | Antimicrobial composition comprising a mixture of lactic acid or a derivative thereof and an inorganic acid |
| WO2004107877A1 (en) | 2003-06-05 | 2004-12-16 | Purac Biochem B.V. | Antimicrobial composition comprising a mixture of lactic acid or a derivative thereof and an inorganic acid |
| JP2006526594A (en) * | 2003-06-05 | 2006-11-24 | ピュラック バイオケム ビー． ブイ． | Antibacterial composition comprising a mixture of lactic acid or its derivative and inorganic acid |
| US7727568B2 (en) | 2003-06-05 | 2010-06-01 | Purac Biochem B.V. | Antimicrobial composition comprising a mixture of lactic acid or a derivative thereof and an inorganic acid |
| JP2006104622A (en) * | 2004-10-07 | 2006-04-20 | Miyoshi Oil & Fat Co Ltd | Recycled paper |
| JP2006001651A (en) * | 2005-08-12 | 2006-01-05 | Mitsubishi Plastics Ind Ltd | Compound natural material container |
| WO2012059847A1 (en) * | 2010-11-05 | 2012-05-10 | Arjowiggins Palalda | Biodegradable sterilization wrap |
| EP2450487A1 (en) * | 2010-11-05 | 2012-05-09 | Arjowiggins Palalda SAS | Biodegradable sterilization wrap |
| JP2014531485A (en) * | 2011-09-18 | 2014-11-27 | バイオ プラズマー リミテッド | Biodegradable composition and use thereof |
| US9951248B2 (en) | 2011-09-18 | 2018-04-24 | Bioplasmar Ltd. | Bio-degradable compositions and use thereof |
| US10752802B2 (en) | 2011-09-18 | 2020-08-25 | Bioplasmar Ltd. | Bio-degradable compositions and use thereof |
| US11453801B2 (en) | 2011-09-18 | 2022-09-27 | Bioplasmar Ltd. | Bio-degradable compositions and use thereof |
| WO2013182757A1 (en) * | 2012-06-08 | 2013-12-12 | Upm-Kymmene Corporation | A method and a system for manufacturing packaging material, as well as packaging material and a package |
| CN106336633A (en) * | 2016-08-19 | 2017-01-18 | 王胜利 | Mushroom package bag |
| US11730156B2 (en) * | 2018-04-06 | 2023-08-22 | Loren James Wilcox | Renewable natural fiber fishing line |
| WO2020025473A1 (en) * | 2018-07-31 | 2020-02-06 | Sig Technology Ag | Flat composite, in particular for producing dimensionally stable food containers, containing an outer polymer layer with a polyester |
| WO2020081477A1 (en) * | 2018-10-15 | 2020-04-23 | Danimer Bioplastics, Inc. | Biopolymer coated fiber food service items |
| CN113382665A (en) * | 2018-10-15 | 2021-09-10 | 丹尼米尔生物塑料有限公司 | Biopolymer-coated fiber food service article |
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|---|---|
| JP2513091B2 (en) | 1996-07-03 |
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