JP2007030309A - Biodegradable laminated film, method for producing the film, and biodegradable container using the film - Google Patents

Biodegradable laminated film, method for producing the film, and biodegradable container using the film Download PDF

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JP2007030309A
JP2007030309A JP2005215927A JP2005215927A JP2007030309A JP 2007030309 A JP2007030309 A JP 2007030309A JP 2005215927 A JP2005215927 A JP 2005215927A JP 2005215927 A JP2005215927 A JP 2005215927A JP 2007030309 A JP2007030309 A JP 2007030309A
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biodegradable
resin composition
container
laminated film
film
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Takeyuki Yamamatsu
剛行 山松
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SANWA SHOKAI KK
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    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
    • 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

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  • Details Of Rigid Or Semi-Rigid Containers (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a biodegradable laminated film which can form a biodegradable container in good productivity while satisfying functions such as designability, food hygienic safety, etc. , a method for producing the film, and a biodegradable container using the film. <P>SOLUTION: The biodegradable laminated film in which a substrate layer made of a biodegradable resin composition (A) substantially in an unoriented state and an adhesive layer made of a biodegradable, heat-sealable resin composition (B) substantially in an unoriented state are at least laminated is adhered to the inner surface of a container main body formed approximately in the shape of a container from a biodegradable material by using a vacuum forming or pressure forming method to be laminated on the container main body by the adhesive strength of the adhesive layer. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、生分解性積層フィルム、この生分解性積層フィルムの製造方法およびこの生分解性積層フィルムを用いた生分解性容器に関する。   The present invention relates to a biodegradable laminated film, a method for producing the biodegradable laminated film, and a biodegradable container using the biodegradable laminated film.

従来から生分解性フィルムに関してや生分解性容器については、実際の使用に寄与すべ
く方法が数多く提案されて来たが、必ずしも地球環境にやさしい技術が完成されているとは言えない。
たとえば、セルロースを主成分とする成型容器（所謂パルプモールド）は、自然に分解する地球環境にやさしい、あるいは断熱性に優れた容器であるが、そのままでは、防水性、フレーバー性、平滑性等に劣るため、意匠性、衛生性・安全性に優れた所謂トレーを得ることは出来ない。 Conventionally, many methods have been proposed for biodegradable films and biodegradable containers in order to contribute to actual use, but it cannot be said that a technology that is friendly to the global environment has been completed.
For example, a molded container containing cellulose as a main component (so-called pulp mold) is a container that is naturally decomposed to the earth environment or excellent in heat insulation, but as it is, it is waterproof, flavorable, smooth, etc. Since it is inferior, a so-called tray excellent in design, hygiene, and safety cannot be obtained.

そこで、上記のような問題を解決するために、紙、板紙等のセルロースを主成分とする基材表面に生分解性樹脂組成物からなる樹脂コート層を設けるようにした積層体が既に提案され、このような積層体が包装容器等に成形されて使用されている（たとえば、特許１、２参照）。   In order to solve the above problems, a laminate in which a resin coating layer made of a biodegradable resin composition is provided on the surface of a base material mainly composed of cellulose, such as paper and paperboard, has already been proposed. Such a laminate is used after being molded into a packaging container or the like (for example, see Patents 1 and 2).

また、パルプモールド法によってパルプ素材から成形されたトレーと、ポリプロピレンまたはポリエチレンに生分解性助剤を混合することによって生分解性が付与された樹脂組成物によって成形された内容器とを、澱粉糊を用いて貼り合わせた食品容器も提案されている（たとえば、特許文献３参照）。   Also, a tray formed from a pulp material by a pulp molding method and an inner container formed from a resin composition imparted with biodegradability by mixing a biodegradable auxiliary agent with polypropylene or polyethylene are used as starch paste. Food containers that have been pasted together using a glass have also been proposed (see, for example, Patent Document 3).

しかしながら、上記のような積層体の場合、プレス成形等によって容器形状に成形しようとした場合、紙、板紙等のセルロースを主成分とする基材と、樹脂コート層との間の伸縮率が異なるため、深絞り加工などでは、樹脂コート層が基材から剥離したり、しわが生じたりする恐れがあり、得られる容器形状に限界がある。   However, in the case of the laminate as described above, when an attempt is made to form into a container shape by press molding or the like, the stretch ratio between the base material mainly composed of cellulose, such as paper and paperboard, and the resin coat layer is different. Therefore, in deep drawing or the like, the resin coat layer may be peeled off from the base material or wrinkles may occur, and the resulting container shape is limited.

一方、上記食品容器の場合、トレーと、内容器とを別々に成形したのち貼り合わせるようにしているので、生産性が悪い。しかも、内容器がポリプロピレンまたはポリエチレンに生分解性助剤を混合することによって生分解性が付与された樹脂組成物によって成形されているので、十分な生分解性がなく、どうしてもポリプロピレンまたはポリエチレンの部分が残ってしまうという問題がある。   On the other hand, in the case of the food container, since the tray and the inner container are separately molded and then bonded together, the productivity is poor. Moreover, since the inner container is molded from a resin composition that has been provided with biodegradability by mixing a biodegradable auxiliary agent with polypropylene or polyethylene, there is no sufficient biodegradability, and the polypropylene or polyethylene part is unavoidable. There is a problem that will remain.

特開平５−２４５９９６号公報JP-A-5-245996 特表平１１−５０６９９０号公報Japanese National Patent Publication No. 11-506990 特開平１１−１７１２３８号公報JP-A-11-171238

本発明は、上記事情に鑑みて、生分解成型容器を意匠性、食品衛生安全性等の機能を満足しつつ、生産性良く得ることができる生分解性積層フィルム、この生分解性積層フィルムの製造方法およびこの生分解性積層フィルムを用いた生分解性容器を提供することを目的としている。   In view of the above circumstances, the present invention provides a biodegradable laminated film capable of obtaining a biodegradable molded container with good productivity while satisfying functions such as designability and food hygiene safety, and the biodegradable laminated film. It aims at providing the manufacturing method and the biodegradable container using this biodegradable laminated film.

上記目的を達成するために、本発明にかかる生分解性積層フィルムは、生分解可能な実質未延伸状態の樹脂組成物(Ａ)からなる基材層と、生分解可能でヒートシール性を有する実質未延伸状態の樹脂組成物（Ｂ）からなる接着層とが少なくとも積層されていることを特徴としている。   In order to achieve the above object, a biodegradable laminated film according to the present invention is a biodegradable substrate layer made of a substantially unstretched resin composition (A), biodegradable and heat-sealable. It is characterized in that at least an adhesive layer made of the substantially unstretched resin composition (B) is laminated.

本発明にかかる生分解性積層フィルムは、特に限定されないが、たとえば、樹脂組成物(Ａ)と、樹脂組成物（Ｂ）とを共押し出しして積層する工程を備える製造方法、樹脂組成物(Ａ)からなる予め基材層形状に成形された成形品の表面に沿って樹脂組成物（Ｂ）を押し出してラミネーションする工程を備える製造方法、樹脂組成物(Ａ)からなるフィルム状成形品と、樹脂組成物(Ｂ)からなるフィルム状成形品とを重ね合わせた状態で一対の加熱ローラ間で挟み付けてサーマルラミネーションする工程を備える製造方法、あるいは、樹脂組成物(Ａ)からなる予め基材層形状に成形された成形品の表面に溶媒分散した樹脂組成物（Ｂ）をコーティングする工程を備える製造方法等によって製造することができる。   The biodegradable laminated film according to the present invention is not particularly limited. For example, the biodegradable laminated film includes a step of coextruding and laminating the resin composition (A) and the resin composition (B), and a resin composition ( A manufacturing method comprising a step of extruding and laminating the resin composition (B) along the surface of a molded product previously formed into a base material layer shape comprising A), a film-shaped molded product comprising the resin composition (A), and , A production method comprising a step of sandwiching a film-shaped molded article made of the resin composition (B) between a pair of heating rollers and performing thermal lamination, or a pre-base made of the resin composition (A) It can be manufactured by a manufacturing method or the like including a step of coating a resin composition (B) in which a solvent is dispersed on the surface of a molded product formed into a material layer shape.

また、本発明にかかる生分解性容器は、上記本発明の生分解性積層フィルムが、生分解可能な材料でほぼ容器形状に形成された容器本体の内面に真空成形または圧空成形法を用いて密着させられ、接着層の接着力によって容器本体に貼り合わされていることを特徴としている。   In addition, the biodegradable container according to the present invention uses a vacuum forming method or a pressure forming method on the inner surface of a container body in which the biodegradable laminated film of the present invention is formed in a substantially container shape with a biodegradable material. It is made to adhere | attach and is affixed on the container main body with the adhesive force of the contact bonding layer.

本発明の生分解性積層フィルムにおいて、基材層の厚みが１０μｍ以上１０００μｍ以下で、接着層の厚みが５μｍ以上５００μｍ以下であることが好ましい。
すなわち、基材層の厚みが１０μｍ未満では、フィルムが破れる恐れがあり、１０００μｍを超えるとロール状に巻き取れない恐れがある。一方、接着層の厚みが５μｍ未満では、平滑でない容器形状との接着が不十分な恐れがあり、５００μｍを超えると経済的に無理が生じる恐れがある。 In the biodegradable laminated film of the present invention, the thickness of the base material layer is preferably 10 μm or more and 1000 μm or less, and the thickness of the adhesive layer is preferably 5 μm or more and 500 μm or less.
That is, if the thickness of the base material layer is less than 10 μm, the film may be torn, and if it exceeds 1000 μm, it may not be wound into a roll. On the other hand, when the thickness of the adhesive layer is less than 5 μm, there is a fear that the adhesion to the non-smooth container shape may be insufficient, and when it exceeds 500 μm, there is a risk that it may be economically impossible.

樹脂組成物（Ａ）を構成する樹脂としては、特に限定されないが、たとえば、脂肪族ポリエステル系生分解性樹脂である、高分子名称で示すところのポリ乳酸（ＰＬＡ、例えば三井化学社の商品名レイシア）、ポリカプロラクトン（ＰＣＬ、例えばダイセル化学社の商品名ブラクセルＨ−７）、ポリブチレンサクシネート（昭和高分子社の商品名ビオノレ）、ポリ-3-ヒドロキシ酪酸（PHB、三菱ガス化学社の商品名ビオグリーン 融点175℃）などが挙げられ、これらが単独で、あるいは、２種以上ブレンドしたり、共重合したものが用いられる。   Although it does not specifically limit as resin which comprises a resin composition (A), For example, the polylactic acid (PLA, for example, the brand name of Mitsui Chemicals, Inc.) which is an aliphatic polyester-type biodegradable resin and is shown by the polymer name Lacia), polycaprolactone (PCL, for example, trade name Braxel H-7 from Daicel Chemical Industries), polybutylene succinate (trade name Bionore from Showa Polymer Co., Ltd.), poly-3-hydroxybutyric acid (PHB, Mitsubishi Gas Chemical) The product name Biogreen has a melting point of 175 ° C.), etc., and these may be used alone, or two or more of them may be blended or copolymerized.

樹脂組成物（Ｂ）を構成する樹脂としては、特に限定されないが、たとえば、脂肪族―芳香族ランダム共重合ポリエステルであるポリブチレンアジペート／ブチレンテレフタレート（ＰＢＡＴ、例えば、ＢＡＳＦ社の商品名Ｅｃｏｆｌｅｘ）、ポリブチレンサクシネート／アジペート、ポリブチレンサクシネート／カーボネート、ポリブチレンサクシネート／テレフタレート、ポリテトラメチレンアジペート／テレフタレート、ポリブチレンサクシネート／アジペート／テレフタレート、ポリエチレンサクシネート、ポリビニールアルコール、ポリ乳酸樹脂などが挙げられ、ポリ乳酸樹脂としては、たとえば、市販の東洋紡績社製商品名バイロエコール（Ｔｇ５０℃のもの）やミヨシ油脂社製の商品名ランディＰＬシリーズを用いることができる。   The resin constituting the resin composition (B) is not particularly limited. For example, polybutylene adipate / butylene terephthalate (PBAT, for example, trade name Ecoflex of BASF), which is an aliphatic-aromatic random copolymer polyester, Polybutylene succinate / adipate, polybutylene succinate / carbonate, polybutylene succinate / terephthalate, polytetramethylene adipate / terephthalate, polybutylene succinate / adipate / terephthalate, polyethylene succinate, polyvinyl alcohol, polylactic acid resin, etc. As the polylactic acid resin, for example, a commercially available product name Viro Ecole (Tg 50 ° C.) manufactured by Toyobo Co., Ltd. or a product name Randy PL series manufactured by Miyoshi Oil & Fats Co., Ltd. can be used. That.

また、上記樹脂組成物（Ａ）および樹脂組成物（Ｂ）の何れかもしくは両方に、生分解を阻害しない着色剤、離型剤などの有機や無機の添加剤を含んでも差し支えない。
本発明の生分解性積層フィルムは、必要に応じて、基材層および接着層の少なくともいずれかの面に、生分解を阻害しないインクで形成された印刷層を積層するようにしても構わないし、接着層に離型シートを添設し、使用時に離型シートを取り除くようにしても構わない。 In addition, either or both of the resin composition (A) and the resin composition (B) may contain an organic or inorganic additive such as a colorant or a release agent that does not inhibit biodegradation.
The biodegradable laminated film of the present invention may be laminated with a printing layer formed of an ink that does not inhibit biodegradation on at least one of the base material layer and the adhesive layer, as necessary. A release sheet may be attached to the adhesive layer, and the release sheet may be removed during use.

本発明の生分解性容器において、容器本体の材料としては、生分解性を備えた材料で形成されていれば特に限定されないが、生分解性樹脂、木質材料、パルプモールド、繊維モールドや固形食品等が挙げられる。ただし、容器本体は、真空成形あるいは圧空成形型に耐えうる硬度を保持している事とガス化する物質を含まない材質である事が必要である。   In the biodegradable container of the present invention, the material of the container body is not particularly limited as long as it is formed of a material having biodegradability, but biodegradable resin, woody material, pulp mold, fiber mold and solid food Etc. However, the container body needs to have a hardness that can withstand vacuum forming or a pressure forming mold and be made of a material that does not contain a gasifying substance.

容器本体と、生分解性積層フィルムとの接着は、接着層による熱圧着のみでも構わないが、接着剤を容器本体との間に介在させてさらに接着強度をあげるようにしても構わない。   The adhesion between the container main body and the biodegradable laminated film may be performed only by thermocompression bonding with an adhesive layer, but an adhesive may be interposed between the container main body and the adhesive strength may be further increased.

本発明にかかる生分解性積層フィルムは、以上のように構成されているので、生分解性成型容器を意匠性、食品衛生安全性等の機能を満足しつつ生産性良く得ることができる。   Since the biodegradable laminated film according to the present invention is configured as described above, a biodegradable molded container can be obtained with high productivity while satisfying functions such as designability and food hygiene safety.

以下に、本発明の実施例を詳しく説明する。
（実施例１）
基材層となる２５μｍ厚みのポリ乳酸系フィルムと接着層となる２０μｍ厚みのポリブチレンアジペート／ブチレンテレフタレート（ＢＡＳＦ社製商品名Ｅｃｏｆｌｅｘ）フィルムを各々インフレーション方式で得た。２枚のフィルムを重ね合わせて１０５℃に加熱
した一対のロール間を通して、厚み４５μｍの生分解性積層フィルムを得た。 Examples of the present invention will be described in detail below.
Example 1
A 25 μm-thick polylactic acid film serving as a base material layer and a 20 μm-thick polybutylene adipate / butylene terephthalate (trade name Ecoflex, manufactured by BASF) film serving as an adhesive layer were obtained respectively by an inflation method. A biodegradable laminated film having a thickness of 45 μm was obtained through a pair of rolls heated to 105 ° C. by superposing two films.

（実施例２）
多年生の植物である葦の繊維素を水に４％分散させた液から、金網製の型に抄いて得られたパルプモールド葦製容器を容器本体として真空成形機にセットするとともに、上記実施例１で得られた生分解性積層フィルムをその接着層側が容器本体側を向くように型枠にセットしたのち、生分解性積層フィルムを１０２℃に予熱後、容器本体に覆い被せながら真空吸引して、生分解性積層フィルム内貼り容器を得た。
得られた生分解性積層フィルム内貼り容器を食品容器として使用した後は、そのまま粉砕してコンポスト化に供した。 (Example 2)
The pulp mold smoked container obtained by drawing a 4% persimmon plant fiber element in water into a wire mesh mold is set as a container body in a vacuum forming machine, and the above examples After setting the biodegradable laminated film obtained in 1 on the mold so that the adhesive layer side faces the container body side, the biodegradable laminated film is preheated to 102 ° C. and then vacuum sucked while covering the container body. Thus, a biodegradable laminated film-laminated container was obtained.
After using the obtained biodegradable laminated film-laminated container as a food container, it was pulverized as it was for composting.

（実施例３）
実施例１で得られた生分解性積層フィルムを、７５ｇ／m2晒しクラフト紙に接着層側を添設させた状態で、１２０℃の加熱ローラを用いて、サーマルラミネートした。
得られたラミネート紙を用いて、Ｌ／Ｄ＝１．０の生分解性紙カップを得た。 (Example 3)
The biodegradable laminated film obtained in Example 1 was thermally laminated using a heating roller at 120 ° C. while being exposed to 75 g / m 2 and attached to the kraft paper with the adhesive layer side.
A biodegradable paper cup with L / D = 1.0 was obtained using the obtained laminated paper.

（実施例４）
実施例１で得られた生分解性積層フィルムを、金属銅板の保護フィルムとして用いたところ、密着性に問題はなく、使用後のフィルムは粉砕後埋め立てが可能であった。 Example 4
When the biodegradable laminated film obtained in Example 1 was used as a protective film for a metal copper plate, there was no problem in adhesion, and the used film could be buried after pulverization.

（比較例１）
実施例１で得られた生分解性積層フィルムに代えて、２５m厚みの未延伸ポリエチレンテレフタレート（東洋紡績社製商品名Ａ−ＰＥＴ）フィルムにエチレン酢酸ビニル共重合体（ＥＶＡ）を接着層として２０μｍの厚みにラミネートした積層フィルムを用いた以外は、実施例２と同様にして、ポリエチレンテレフタレート内貼り容器を得た。この容器を食品トレーとして使用した後、廃棄する時、容器本体、すなわち、葦パルプモールド部分は粉砕したら生分解の可能性があったが、ポリエチレンテレフタレート積層フィルム部分は容器本体から剥ぎ取って焼却処分に供した。 (Comparative Example 1)
In place of the biodegradable laminated film obtained in Example 1, 20 μm of an unstretched polyethylene terephthalate (trade name: A-PET, manufactured by Toyobo Co., Ltd.) film having a thickness of 25 m and an ethylene vinyl acetate copolymer (EVA) as an adhesive layer. A polyethylene terephthalate inner-attached container was obtained in the same manner as in Example 2 except that a laminated film laminated to a thickness of was used. When this container is used as a food tray and then discarded, the container body, that is, the pulp pulp mold part, may be biodegraded if pulverized, but the polyethylene terephthalate laminated film part is peeled off from the container body and incinerated. It was used for.

本発明にかかる生分解性積層フィルムは、特開２００５―１５３１４６号公報に記載の被覆成形品の被膜となる被覆フィルムとしてや、食品容器等だけではなく、たとえば、金属板・プラスチック板の保護シート、塗装時のマスキングフィルム、七夕用の人工笹飾り
ディスポーザブル介護シート、自動車の内装シート、自動車輸出用ディスポーザブル保護カバー、包装用ストレッチフィルム等として使用することができる。また、カップ原紙の片面若しくは両面に接着させた後カップを形成したり、基材層を外や内側に変えて、滑り防止容器（お盆・皿）に成型することもできる。 The biodegradable laminated film according to the present invention can be used not only as a food film or the like, but also as a protective sheet for a metal plate / plastic plate, for example, as a coating film for a coated molded product described in JP-A-2005-153146. It can be used as a masking film for painting, a disposable care sheet for artificial tan decoration for Tanabata, an automobile interior sheet, a disposable protective cover for automobile export, a stretch film for packaging, and the like. Moreover, after making it adhere | attach on the one side or both surfaces of a cup base paper, a cup can be formed, or a base material layer can be changed into the outside or the inside, and it can also shape | mold into an anti-slip container (a tray and a dish).

Claims (7)

生分解可能な実質未延伸状態の樹脂組成物(Ａ)からなる基材層と、生分解可能でヒートシール性を有する実質未延伸状態の樹脂組成物（Ｂ）からなる接着層とが少なくとも積層されていることを特徴とする生分解性積層フィルム。   A base material layer composed of a biodegradable substantially unstretched resin composition (A) and a biodegradable and heat sealable adhesive composition composed of a substantially unstretched resin composition (B) are laminated at least. A biodegradable laminated film characterized by being made. 基材層の厚みが１０μｍ以上１０００μｍ以下で、接着層の厚みが５μｍ以上５００μｍ以下である請求項１に記載の生分解性積層フィルム。   The biodegradable laminated film according to claim 1, wherein the thickness of the base material layer is 10 µm or more and 1000 µm or less, and the thickness of the adhesive layer is 5 µm or more and 500 µm or less. 樹脂組成物(Ａ)と、樹脂組成物（Ｂ）とを共押し出しして積層する工程を備える請求項1に記載の生分解性積層フィルムの製造方法。   2. The method for producing a biodegradable laminated film according to claim 1, comprising a step of coextruding and laminating the resin composition (A) and the resin composition (B). 樹脂組成物(Ａ)からなる予め基材層形状に成形された成形品の表面に沿って樹脂組成物（Ｂ）を押し出してラミネーションする工程を備える請求項1に記載の生分解性積層フィルムの製造方法。   2. The biodegradable laminated film according to claim 1, further comprising a step of extruding and laminating the resin composition (B) along the surface of a molded product previously formed into a base material layer shape made of the resin composition (A). Production method. 樹脂組成物(Ａ)からなるフィルム状成形品と、樹脂組成物(Ｂ)からなるフィルム状成形品とを重ね合わせた状態で一対の加熱ローラ間で挟み付けてサーマルラミネーションする工程を備える請求項1に記載の生分解性積層フィルムの製造方法。   A film-shaped molded article made of the resin composition (A) and a film-shaped molded article made of the resin composition (B) are sandwiched between a pair of heating rollers in a state where the film-shaped molded article is superimposed, and thermal lamination is provided. 1. A method for producing a biodegradable laminated film according to 1. 樹脂組成物(Ａ)からなる予め基材層形状に成形された成形品の表面に溶媒分散した樹脂組成物（Ｂ）をコーティングする工程を含む請求項1に記載の生分解性積層フィルムの製造方法。   2. The production of the biodegradable laminated film according to claim 1, comprising a step of coating a resin composition (B) dispersed in a solvent on the surface of a molded product previously formed into a base material layer shape comprising the resin composition (A). Method. 請求項１または請求項２に記載の生分解性積層フィルムが、生分解可能な材料でほぼ容器形状に形成された容器本体の内面に真空成形または圧空成形法を用いて密着させられ、接着層の接着力によって容器本体に貼り合わされていることを特徴とする生分解性容器。   The biodegradable laminated film according to claim 1 or 2 is adhered to an inner surface of a container body formed of a biodegradable material in a substantially container shape by using a vacuum forming or a pressure forming method, and an adhesive layer A biodegradable container, which is bonded to the container body by the adhesive force of.
JP2005215927A 2005-07-26 2005-07-26 Biodegradable laminated film, method for producing the film, and biodegradable container using the film Pending JP2007030309A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007105191A3 (en) * 2006-03-16 2008-03-20 Uzet Patents Ltd Protective covers
CN102092525A (en) * 2009-12-10 2011-06-15 方卫良品股份有限公司 Biodegradable mixture
WO2023223701A1 (en) * 2022-05-16 2023-11-23 住友化学株式会社 Composition

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007105191A3 (en) * 2006-03-16 2008-03-20 Uzet Patents Ltd Protective covers
CN102092525A (en) * 2009-12-10 2011-06-15 方卫良品股份有限公司 Biodegradable mixture
WO2023223701A1 (en) * 2022-05-16 2023-11-23 住友化学株式会社 Composition

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