JPH0584876A - Biodegradable resin laminate - Google Patents
Biodegradable resin laminateInfo
- Publication number
- JPH0584876A JPH0584876A JP24861891A JP24861891A JPH0584876A JP H0584876 A JPH0584876 A JP H0584876A JP 24861891 A JP24861891 A JP 24861891A JP 24861891 A JP24861891 A JP 24861891A JP H0584876 A JPH0584876 A JP H0584876A
- Authority
- JP
- Japan
- Prior art keywords
- biodegradable polyester
- laminate
- biodegradable
- polyvinyl alcohol
- resin laminate
- 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.)
- Pending
Links
Landscapes
- Laminated Bodies (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、多層フィルム、多層シ
ート、多層容器に関し、より詳細には、優れた酸素バリ
ア性を有し、かつ生分解性を有する積層体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multilayer film, a multilayer sheet and a multilayer container, and more particularly to a laminate having an excellent oxygen barrier property and biodegradability.
【０００２】[0002]
【従来の技術】生分解性ポリエステルは酸素透過度が大
きく、内容物の保存性が悪い。また、生分解性を有し、
酸素バリア性に優れるポリビニルアルコール（以下ＰＶ
Ａとする）は耐水性が悪く、単体で包材に適用すること
は困難であった。2. Description of the Related Art Biodegradable polyester has a high oxygen permeability, and the storability of its contents is poor. It also has biodegradability,
Polyvinyl alcohol with excellent oxygen barrier properties (hereinafter PV
A) was poor in water resistance, and it was difficult to apply it alone to the packaging material.
【０００３】[0003]
【発明が解決しようとする課題】本発明は以上のような
問題点を解決する為になされたもので、その課題とする
ところは、酸素バリア性に優れ、生分解性を有する樹脂
積層体を提供することである。SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a resin laminate having excellent oxygen barrier properties and biodegradability. Is to provide.
【０００４】[0004]
【課題を解決するための手段】本発明は以上の課題を解
決するために、基本的には、２種以上の樹脂層が積層さ
れた積層体において、その構成が生分解性ポリエステル
／ＰＶＡ／生分解性ポリエステルであることを特徴とす
る生分解性樹脂積層体を提供するものであり、また、そ
の構成が生分解性ポリエステル／ＰＶＡ／生分解性ポリ
エステル＋スクラップである場合、生分解性ポリエステ
ル／ＰＶＡ／生分解性ポリエステル＋スクラップ／生分
解性ポリエステルである場合なども含むものとする。In order to solve the above problems, the present invention is basically a laminate in which two or more resin layers are laminated, and the constitution thereof is biodegradable polyester / PVA / The present invention provides a biodegradable resin laminate characterized by being a biodegradable polyester, and when the composition is biodegradable polyester / PVA / biodegradable polyester + scrap, the biodegradable polyester. / PVA / biodegradable polyester + scrap / biodegradable polyester etc. are also included.
【０００５】本発明に用いる生分解ポリエステルは、ポ
リ−３−ヒドロキシブチレート、３−ヒドロキシブチレ
ート−３−ヒドロキシバリレート共重合体、３−ヒドロ
キシブチレート−４−ヒドロキシブチレート共重合体、
３−ヒドロキシブチレート−３−ヒドロキシバリレート
−４−ヒドロキシブチレート三元共重合体、またはポリ
カプロラクトンを用いることができる。The biodegradable polyester used in the present invention includes poly-3-hydroxybutyrate, 3-hydroxybutyrate-3-hydroxyvalerate copolymer, 3-hydroxybutyrate-4-hydroxybutyrate copolymer,
3-hydroxybutyrate-3-hydroxyvalerate-4-hydroxybutyrate terpolymer or polycaprolactone can be used.
【０００６】本発明に用いるＰＶＡは平均重合度が３０
０〜２４００、ケン化度９８モル％以上の完全ケン化Ｐ
ＶＡ、またはケン化度８７〜８９モル％の部分ケン化Ｐ
ＶＡものが使用できるが、耐水性の面から完全ケン化Ｐ
ＶＡが好ましい。The PVA used in the present invention has an average degree of polymerization of 30.
0 to 2400, complete saponification P with saponification degree of 98 mol% or more
VA or partially saponified P having a saponification degree of 87 to 89 mol%.
Although VA can be used, it is completely saponified P from the viewpoint of water resistance.
VA is preferred.
【０００７】本発明の樹脂積層体は共押出成形、共射出
成形、またはラミネーションで加工できる。ただし、共
押出、共射出の場合、各材料を溶融するのに適した押出
機が必要である。The resin laminate of the present invention can be processed by coextrusion molding, coinjection molding, or lamination. However, in the case of co-extrusion and co-injection, an extruder suitable for melting each material is required.
【０００８】また、酸素バリア効果を著しく向上させる
ため延伸させることも有効である。Stretching is also effective in order to remarkably improve the oxygen barrier effect.
【０００９】[0009]
【作用】以上のように本発明によって、ＰＶＡが酸素の
透過を妨げ、両側に位置する生分解性ポリエステルがＰ
ＶＡと水が接触するのを妨げる。両者の接着性はＰＶＡ
の有する接着性によって保持される。As described above, according to the present invention, PVA impedes the permeation of oxygen and biodegradable polyesters located on both sides are P
Prevents contact between VA and water. Adhesiveness of both is PVA
It is retained by the adhesiveness of.
【００１０】[0010]
【実施例】本発明を次の実施例で説明する。 ＜実施例１＞生分解ポリエステルとして３−ヒドロキシ
ブチレート−３−ヒドロキシバリレート共重合体（以下
３ＨＢ−３ＨＶとする）を使用し、ＰＶＡとして重合度
１７００〜２４００、ケン化度９８〜９９モル％の完全
ケン化ＰＶＡを使用した。The present invention will be described in the following examples. <Example 1> A 3-hydroxybutyrate-3-hydroxyvalerate copolymer (hereinafter referred to as 3HB-3HV) is used as a biodegradable polyester, and PVA has a polymerization degree of 1700 to 2400 and a saponification degree of 98 to 99 mol. % Fully saponified PVA was used.
【００１１】前記各物質より、３ＨＢ−３ＨＶ／ＰＶＡ
／３ＨＢ−３ＨＶの多層シートを成形した。各層の厚さ
は、４８０μｍ／５０μｍ／４５０μｍ／にした。From the above substances, 3HB-3HV / PVA
A multilayer sheet of / 3HB-3HV was molded. The thickness of each layer was 480 μm / 50 μm / 450 μm /.
【００１２】＜実施例２＞実施例１と同様にして、各層
の厚さを４３０μｍ／５０μｍ／４００μｍにした。<Embodiment 2> In the same manner as in Embodiment 1, the thickness of each layer was 430 μm / 50 μm / 400 μm.
【００１３】＜実施例３＞実施例１と同様にして、各層
の厚さを４７０μｍ／５０μｍ／４６０μｍにした。<Embodiment 3> In the same manner as in Embodiment 1, the thickness of each layer was set to 470 μm / 50 μm / 460 μm.
【００１４】比較例として、生分解ポリエステルとして
３ＨＢ−３ＨＶの平均厚さ１０３０μｍのシートを成形
した。As a comparative example, a sheet of 3HB-3HV having an average thickness of 1030 μm was formed as a biodegradable polyester.
【００１５】これらの酸素透過度のデータ、及び分解性
試験の結果を表１に示す。Table 1 shows the data of the oxygen permeability and the result of the decomposability test.
【００１６】[0016]
【表１】 [Table 1]
【００１７】表１において、重量減少率はペニシリウム
−フニクロサム（Penicillium funicurosum）菌液より
単離した酵素を用いて、３日後の重量減少率を測定した
ものである。In Table 1, the weight loss rate is obtained by measuring the weight loss rate after 3 days using an enzyme isolated from a Penicillium funicurosum bacterium solution.
【００１８】[0018]
【発明の効果】本発明によれば、生分解性を有し、かつ
酸素バリア性に優れた生分解性樹脂積層体を得ることが
できる。またＰＶＡ単体のような耐水性の問題もないの
で。包装材やその積層材料としての使用にも適してい
る。According to the present invention, it is possible to obtain a biodegradable resin laminate having biodegradability and excellent oxygen barrier properties. Also, there is no problem of water resistance like PVA alone. It is also suitable for use as a packaging material and its laminated material.
【００１９】[0019]
【図１】本発明に係る生分解性樹脂積層体の一実施例の
断面を示す説明図である。FIG. 1 is an explanatory view showing a cross section of an embodiment of a biodegradable resin laminate according to the present invention.
１…生分解性ポリエステル ２…ＰＶＡ ３…生分解性ポリエステル 1 ... Biodegradable polyester 2 ... PVA 3 ... Biodegradable polyester
Claims (3)
いて、その構成が生分解性ポリエステル／ポリビニルア
ルコール／生分解性ポリエステルであることを特徴とす
る生分解性樹脂積層体。1. A biodegradable resin laminate in which two or more kinds of resin layers are laminated and the constitution is biodegradable polyester / polyvinyl alcohol / biodegradable polyester.
いて、その構成が生分解性ポリエステル／ポリビニルア
ルコール／生分解性ポリエステル＋スクラップであるこ
とを特徴とする生分解性樹脂積層体。2. A biodegradable resin laminate comprising a laminate in which two or more resin layers are laminated, the composition of which is biodegradable polyester / polyvinyl alcohol / biodegradable polyester + scrap.
いて、その構成が生分解性ポリエステル／ポリビニルア
ルコール／生分解性ポリエステル＋スクラップ／生分解
性ポリエステルであることを特徴とする生分解性樹脂積
層体。3. A biodegradation characterized by comprising a biodegradable polyester / polyvinyl alcohol / biodegradable polyester + scrap / biodegradable polyester in a laminate in which two or more resin layers are laminated. Resin laminate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24861891A JPH0584876A (en) | 1991-09-27 | 1991-09-27 | Biodegradable resin laminate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24861891A JPH0584876A (en) | 1991-09-27 | 1991-09-27 | Biodegradable resin laminate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0584876A true JPH0584876A (en) | 1993-04-06 |
Family
ID=17180796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24861891A Pending JPH0584876A (en) | 1991-09-27 | 1991-09-27 | Biodegradable resin laminate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0584876A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0654504A2 (en) | 1993-11-18 | 1995-05-24 | Toyo Seikan Kaisha Limited | Resin composition having improved mechanical properties and bio-disintegrating property and containers comprising thereof |
| WO1997035922A1 (en) * | 1996-03-26 | 1997-10-02 | Gunze Limited | Biodegradable card base |
| DE102006024568A1 (en) * | 2006-05-23 | 2007-12-06 | Huhtamaki Forchheim Zweigniederlassung Der Huhtamaki Deutschland Gmbh & Co. Kg | Process for producing a biodegradable plastic film and film |
| JP2009096096A (en) * | 2007-10-18 | 2009-05-07 | Tohcello Co Ltd | Laminated film |
| JP2009196287A (en) * | 2008-02-25 | 2009-09-03 | Nippon Synthetic Chem Ind Co Ltd:The | Biodegradable laminate |
| JP2010525962A (en) * | 2007-04-30 | 2010-07-29 | エバプ エンバイロンメンタルズ リミテッド | Biodegradable multilayer polymer film and packaging material produced therefrom |
| EP3366470A1 (en) | 2015-10-19 | 2018-08-29 | Denka Company Limited | Laminated sheet and formed container |
| JP2020044717A (en) * | 2018-09-19 | 2020-03-26 | 株式会社平和化学工業所 | Resin molding and method for producing the same |
| WO2020203536A1 (en) | 2019-03-29 | 2020-10-08 | 三菱ケミカル株式会社 | Molded article and method for producing molded article |
-
1991
- 1991-09-27 JP JP24861891A patent/JPH0584876A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0654504A2 (en) | 1993-11-18 | 1995-05-24 | Toyo Seikan Kaisha Limited | Resin composition having improved mechanical properties and bio-disintegrating property and containers comprising thereof |
| WO1997035922A1 (en) * | 1996-03-26 | 1997-10-02 | Gunze Limited | Biodegradable card base |
| US6350530B1 (en) | 1996-03-26 | 2002-02-26 | Gunze Limited | Biodegradable card base |
| DE102006024568A1 (en) * | 2006-05-23 | 2007-12-06 | Huhtamaki Forchheim Zweigniederlassung Der Huhtamaki Deutschland Gmbh & Co. Kg | Process for producing a biodegradable plastic film and film |
| JP2010525962A (en) * | 2007-04-30 | 2010-07-29 | エバプ エンバイロンメンタルズ リミテッド | Biodegradable multilayer polymer film and packaging material produced therefrom |
| JP2009096096A (en) * | 2007-10-18 | 2009-05-07 | Tohcello Co Ltd | Laminated film |
| JP2009196287A (en) * | 2008-02-25 | 2009-09-03 | Nippon Synthetic Chem Ind Co Ltd:The | Biodegradable laminate |
| EP3366470A1 (en) | 2015-10-19 | 2018-08-29 | Denka Company Limited | Laminated sheet and formed container |
| JP2020044717A (en) * | 2018-09-19 | 2020-03-26 | 株式会社平和化学工業所 | Resin molding and method for producing the same |
| WO2020059793A1 (en) * | 2018-09-19 | 2020-03-26 | 株式会社平和化学工業所 | Resin molded article and method for producing same |
| WO2020203536A1 (en) | 2019-03-29 | 2020-10-08 | 三菱ケミカル株式会社 | Molded article and method for producing molded article |
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