JP2004098321A - Biodegradable laminated packaging material - Google Patents
Biodegradable laminated packaging material Download PDFInfo
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- JP2004098321A JP2004098321A JP2002259675A JP2002259675A JP2004098321A JP 2004098321 A JP2004098321 A JP 2004098321A JP 2002259675 A JP2002259675 A JP 2002259675A JP 2002259675 A JP2002259675 A JP 2002259675A JP 2004098321 A JP2004098321 A JP 2004098321A
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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
- 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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- Extrusion Moulding Of Plastics Or The Like (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
Description
【０００１】
【発明の属する技術分野】
本発明は、生分解性を有する積層包装材料に関するものである。
【０００２】
【従来の技術】
近年、耐久消費材のひんぱんな買い換え、使い捨て型の商品や容器包装の普及などにより一般廃棄物の量が増え続け、焼却工場の能力不足、埋立地の不足が叫ばれている。また、一般廃棄物の多くを占める容器包装廃棄物の中の樹脂類は一般的に焼却時の発熱量が高い為焼却されないで直接埋め立てざるを得ないため、ますます埋立地の不足に拍車をかける状況になっている。容器包装材料は内容物の保存性、利便性など種々の優れた機能を持っているが、前述の状況からその減量化が叫ばれている。一方、内容物を包装後、不用になって廃棄され、土中に埋められた後に土中の微生物によって分解され、最終的に炭酸ガスと水になる生分解性樹脂も種々研究され、一部実用化されている。容器包装材料として使用される生分解性樹脂は大きく分けて、微生物系、天然物系、化学合成系に分類できる。微生物系は微生物が作る樹脂であり、天然物系は澱粉系などの樹脂があり、化学合成系は脂肪族ポリエステル樹脂が知られ、最近はポリ乳酸系樹脂等が注目を集めている。
これらの生分解性樹脂を利用する分野としては、農業用フィルム等の農林水産用資材、保水シート等の環境土木資材、生ごみを包む袋類、肉、魚などの生鮮食品類の包装フィルムあるいは容器、さらにはシャンプーや洗剤などの容器等がある。
【０００３】
【発明が解決しようとする課題】
現在、これらの資材、フィルム、容器などに使用される生分解性樹脂は容器包装材料として単体で使用されている場合が多いが、今後、前記生分解性樹脂を広く容器包装分野、特に軟包装分野で使用していく為には、紙などの生分解性を有する基材に積層して、各種機能をさらに付加させる必要がある。一般的に、生分解性を有する基材に他の生分解性樹脂を溶融押出法で直接積層する場合、基材として使用した紙への接着性を向上させる為に生分解性樹脂の押出樹脂温度を樹脂の分解温度近辺まで上げて押出加工し、紙の繊維間への樹脂の入り込みを良くする方法で積層している。しかし、この方法で積層すると加工時に使用した生分解性樹脂が熱分解し、ゲルが発生して良好な製膜性が得られなかったり、樹脂の熱分解臭で作業環境を悪化させる等の欠点があった。
【０００４】
本発明の課題は、紙層へ生分解性を有する樹脂を積層する時に、樹脂が良好に製膜され、樹脂の紙層への接着が良好な生分解性を有する積層包装材料を提供することにある。
【０００５】
【課題を解決するための手段】
本発明の請求項１に係る発明は、紙層を基材とし、紙層の一方の面に紙への接着が良く、生分解性を有するテレフタル酸／アジピン酸／１，４ブタンジオールの３成分の脂肪族／芳香族共重合ポリエステル樹脂層と、ポリ乳酸、ポリブチレンサクシネート又はデンプン／ポリカプロラクトン混合物からなる生分解性樹脂若しくは前記脂肪族／芳香族共重合ポリエステル樹脂１０〜５０重量％に対し、ポリ乳酸、ポリブチレンサクシネート又はデンプン／ポリカプロラクトン混合物からなる生分解性樹脂９０〜５０重量％を混練したブレンド樹脂からなるシール層との少なくとも二層を、脂肪族／芳香族共重合ポリエステル樹脂層を紙層側にして共押出法で積層したものからなることを特徴とする生分解性を有する積層包装材料である。
【０００６】
【作用】
本発明によれば、積層包装材料が紙層の一方の面に紙への接着が良く、生分解性を有するテレフタル酸／アジピン酸／１，４ブタンジオールの３成分の脂肪族／芳香族共重合ポリエステル樹脂層と、ポリ乳酸、ポリブチレンサクシネート又はデンプン／ポリカプロラクトン混合物からなる生分解性樹脂若しくは前記脂肪族／芳香族共重合ポリエステル樹脂１０〜５０重量％に対し、ポリ乳酸、ポリブチレンサクシネート又はデンプン／ポリカプロラクトン混合物からなる生分解性樹脂９０〜５０重量％を混練したブレンド樹脂からなるシール層との少なくとも二層を、脂肪族／芳香族共重合ポリエステル樹脂層を紙層側にして共押出法で積層しているので、単層で押出す場合に比べて製膜性が良く、２００℃程度の低温の押出樹脂温度で加工できるので、樹脂の熱分解臭も無く、作業環境を悪化させることも無い。さらに、紙層への樹脂の接着も良好で、生分解性も優れている。
【０００７】
【発明の実施の形態】
本発明の生分解性を有する積層包装材料を以下に詳細に説明する。
【０００８】
図１は本発明の生分解性を有する積層包装材料の一例を示す側断面図であり、紙層（１）の片面に脂肪族／芳香族共重合ポリエステル樹脂層（２）とシール層（３）を共押出法で同時に積層した構成になっている。押出樹脂温度２００℃程度で二層樹脂を共押出法で同時に積層するので、単層押出の場合に比べて良好な製膜性が得られ、樹脂の熱分解臭も無い。従って作業環境が悪化することも無い。
【０００９】
前記紙層（１）に使用する材料は、包装材料に使用できる紙であれば特に限定されない。例えば純白ロール紙、上質紙、薄葉紙、模造紙、板紙、ボール紙、クラフト紙などで、厚みも用途により適宜選定する。紙層（１）の積層側の表面は接着し易いようにコロナ放電処理等を施しても良い。
【００１０】
前記脂肪族／芳香族共重合ポリエステル樹脂層（２）は、テレフタル酸／アジピン酸／１，４ブタンジオールの３成分の共重合体樹脂からなっており、この共重合体樹脂は紙層（１）への接着が良く、優れた生分解性を合わせ持っている。単層で溶融押出加工した場合は離ロール性が悪い。厚みは５〜４０μｍが良い。
【００１１】
前記シール層（３）は、ポリ乳酸、ポリブチレンサクシネート又はデンプン／ポリカプロラクトン混合物からなる生分解性樹脂若しくは前記脂肪族／芳香族共重合ポリエステル樹脂１０〜５０重量％に対し、ポリ乳酸、ポリブチレンサクシネート又はデンプン／ポリカプロラクトン混合物からなる生分解性樹脂９０〜５０重量％を混練したブレンド樹脂からなっており、シール性を有すると共に優れた生分解生を有している。前記の如く脂肪族／芳香族共重合ポリエステル樹脂を生分解性樹脂に混練する理由は脂肪族／芳香族共重合ポリエステル樹脂層（２）とシール層（３）の接着をより強固にする為である。厚みは１５〜５０μｍである。
【００１２】
なお、前記脂肪族／芳香族共重合ポリエステル樹脂層（２）とシール層（３）の間に生分解性を有し、かつガスバリア性を有する樹脂層をさらに設けた多層構成にしても良い。この場合は積層包装材料にガスバリア性を付与させることができる。
【００１３】
【実施例】
本発明の生分解性を有する積層包装材料を、以下に具体的な実施例に従って説明するが、本発明がこれらの実施例に限定されるものではない。
【００１４】
＜実施例１＞
紙層（１）の材料として坪量２７０ｇ／ｍ２ のカップ用の板紙を使用し、脂肪族／芳香族共重合ポリエステル樹脂層（２）の樹脂としてＢＡＳＦ（株）製の脂肪族／芳香族共重合ポリエステル樹脂（商品名：エコフレックス）を使用し、シール層（３）の樹脂としてポリ乳酸樹脂（三井化学（株）、商品名：レイシア）を使用した。共押出ラミネート機を用いて、前記板紙の片面にコロナ放電処理を施し、その処理面にエコフレックスとレイシアの二層樹脂を、エコフレックスを紙層側にして、両方の押出樹脂温度２００℃で、エコフレックス／レイシアの厚み比率が３０／３０μｍになるように設定して共押出し、積層して本発明の生分解性を有する積層包装材料を作成した。
【００１５】
＜比較例１＞
紙層（１）として坪量２７０ｇ／ｍ２ のカップ用の板紙を使用し、単層押出ラミネート機を用いて、その板紙の片面にコロナ放電処理を施し、その処理面にレイシアを押出樹脂温度２００℃で厚み４０μｍで単層押出し、積層して比較用の積層包装材料を作成した。
【００１６】
＜比較例２＞
比較例１において、レイシアを押出樹脂温度２３０℃で単層押出し、積層した以外は、同様にして比較用の積層包装材料を得た。
【００１７】
＜比較例３＞
比較例１において、レイシアを押出樹脂温度２６０℃で単層押出し、積層した以外は、同様にして比較用の積層包装材料を作成した。
【００１８】
＜比較例４＞
紙層（１）として坪量２７０ｇ／ｍ２ のカップ用の板紙を使用し、単層押出ラミネート機を用いて、その板紙の片面にコロナ放電処理を施し、その処理面にエコフレックスを押出樹脂温度２００℃で単層押出し、積層して比較用の積層包装材料を作成した。
【００１９】
＜比較例５＞
比較例４において、エコフレックスを押出樹脂温度２３０℃で単層押出し、積層した以外は、同様にして比較用の積層包装材料を作成した。
【００２０】
＜評価＞
実施例１及び比較例１〜５の積層包装材料の製造時に積層する樹脂の製膜性の良否、樹脂の熱分解臭の有無及び紙層との接着の良否を評価した。その結果を表１に示す。
【００２１】
【表１】
表１から、実施例１の積層包装材料は積層時の押出樹脂温度が２００℃と低温であったが、樹脂の製膜性は良好で、樹脂の熱分解臭も無かった。さらに、紙層への接着も強固であった。比較例１の積層包装材料は、ポリ乳酸樹脂を単層で積層しており、積層時の樹脂の製膜性は良好で、樹脂温度が低温の為に樹脂の熱分解臭も無かったが、紙層への接着が不良であった。比較例２の積層包装材料は同様にポリ乳酸樹脂を単層で積層しており、積層時の押出樹脂温度が２３０℃であったので、樹脂分解臭はなかったが、製膜性は不良で、紙層への接着も不良であった。比較例３の積層包装材料は同様にポリ乳酸樹脂を単層で積層しており、積層時の押出樹脂温度が２６０℃であったので紙層への接着は良かったが、製膜性は不良で、樹脂の熱分解臭もあった。比較例４の積層包装材料は脂肪族／芳香族共重合ポリエステル樹脂を単層で積層しており、積層時の押出樹脂温度が２００℃で紙層への接着は良く、樹脂の熱分解臭も無かったが、樹脂の離ロール性が悪く、樹脂の製膜性は不良であった。比較例５の積層包装材料は同様に脂肪族／芳香族共重合ポリエステル樹脂を単層で積層しており、積層時の押出樹脂温度が２３０℃で紙層への接着は良く、樹脂の熱分解臭も無かったが、樹脂の離ロール性が悪く、樹脂の製膜性は不良であった。
【００２３】
【発明の効果】
本発明の生分解性を有する積層包装材料は、紙層の一方の面に紙への接着が良く、生分解性を有するテレフタル酸／アジピン酸／１，４ブタンジオールの３成分の脂肪族／芳香族共重合ポリエステル樹脂層と、ポリ乳酸、ポリブチレンサクシネート又はデンプン／ポリカプロラクトン混合物からなる生分解性樹脂若しくは前記脂肪族／芳香族共重合ポリエステル樹脂１０〜５０重量％に対し、ポリ乳酸、ポリブチレンサクシネート又はデンプン／ポリカプロラクトン混合物からなる生分解性樹脂９０〜５０重量％を混練したブレンド樹脂からなるシール層との少なくとも二層を、脂肪族／芳香族共重合ポリエステル樹脂層を紙層側にして共押出法で積層しているので、積層時に二層樹脂の押出樹脂温度が低くても製膜性が良好で、樹脂の熱分解臭もなく、紙層への樹脂の接着も強く、かつ、優れた生分解性を有している。従って、生分解性を要求される包装分野で広く利用出来る。
【図面の簡単な説明】
【図１】本発明の生分解性を有する積層包装材料の一例を示す側断面図である。
【符号の説明】
１…紙層
２…脂肪族／芳香族共重合ポリエステル樹脂層
３…シール層[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a laminated packaging material having biodegradability.
[0002]
[Prior art]
In recent years, the amount of general waste has continued to increase due to the frequent replacement of durable consumables and the widespread use of disposable products and containers and packaging. In addition, resins in container and packaging waste, which account for a large portion of general waste, generally have a high calorific value during incineration and must be reclaimed directly without being incinerated. It is in a situation to be applied. Containers and packaging materials have various excellent functions such as preservability and convenience of contents, but the above-mentioned situation calls for a reduction in weight. On the other hand, biodegradable resins that are packaged, discarded after becoming unneeded, buried in the soil, decomposed by microorganisms in the soil, and eventually become carbon dioxide and water have been studied in various ways. Has been put to practical use. Biodegradable resins used as containers and packaging materials can be broadly classified into microbial, natural product, and chemically synthesized systems. Microbial systems are resins made by microorganisms, natural products include starch-based resins, and chemically synthesized systems include aliphatic polyester resins. Recently, polylactic acid-based resins have attracted attention.
Fields that use these biodegradable resins include agricultural and forestry and fishery materials such as agricultural films, environmental engineering materials such as water retention sheets, bags that wrap garbage, packaging films for fresh foods such as meat and fish, or Containers, and also containers for shampoo, detergent, and the like.
[0003]
[Problems to be solved by the invention]
At present, these materials, films, biodegradable resins used for containers and the like are often used alone as containers and packaging materials, but in the future, the biodegradable resins will be widely used in the container and packaging field, especially in soft packaging. In order to use it in the field, it is necessary to add various functions by laminating on a biodegradable base material such as paper. Generally, when another biodegradable resin is directly laminated on a biodegradable base material by a melt extrusion method, the extruded resin of the biodegradable resin is used to improve the adhesion to the paper used as the base material. Extrusion is performed by raising the temperature to a temperature near the decomposition temperature of the resin, and lamination is performed by a method for improving the penetration of the resin between the fibers of the paper. However, when laminated by this method, the biodegradable resin used at the time of processing is thermally decomposed and gels are generated, and good film-forming properties cannot be obtained, and the working environment is deteriorated due to the thermal decomposition odor of the resin. was there.
[0004]
An object of the present invention is to provide a laminated packaging material having a good biodegradability in which a resin is formed into a good film when a biodegradable resin is laminated on a paper layer, and the adhesion of the resin to the paper layer is good. It is in.
[0005]
[Means for Solving the Problems]
The invention according to
[0006]
[Action]
According to the present invention, the three-component aliphatic / aromatic copolymer of terephthalic acid / adipic acid / 1,4-butanediol, which has good adhesion to paper on one side of the paper layer and has biodegradability, is provided. A polylactic acid, a polybutylene succinate, or a biodegradable resin composed of a polylactic acid, a polybutylene succinate, or a starch / polycaprolactone mixture, or 10 to 50% by weight of the aliphatic / aromatic copolymerized polyester resin is used. At least two layers with a seal layer made of a blended resin kneaded with 90 to 50% by weight of a biodegradable resin made of a mixture of a sodium salt or a starch / polycaprolactone, with the aliphatic / aromatic copolymerized polyester resin layer facing the paper layer. Because it is laminated by co-extrusion method, it has better film-forming properties than when extruded in a single layer, and is processed at a low extruded resin temperature of about 200 ° C. Since the wear, thermal decomposition odor of resin without any, it is also not worsen the work environment. Furthermore, the adhesion of the resin to the paper layer is good, and the biodegradability is excellent.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
The laminated packaging material having biodegradability of the present invention will be described in detail below.
[0008]
FIG. 1 is a side sectional view showing an example of the laminated packaging material having biodegradability according to the present invention, wherein an aliphatic / aromatic copolymerized polyester resin layer (2) and a seal layer (3) are provided on one side of a paper layer (1). ) Are simultaneously laminated by a co-extrusion method. Since the two-layer resin is simultaneously laminated by the co-extrusion method at an extruded resin temperature of about 200 ° C., good film-forming properties are obtained as compared with the case of single-layer extrusion, and there is no thermal decomposition odor of the resin. Therefore, the working environment does not deteriorate.
[0009]
The material used for the paper layer (1) is not particularly limited as long as the paper can be used for a packaging material. For example, pure white roll paper, high quality paper, tissue paper, imitation paper, paperboard, cardboard, kraft paper, etc., and the thickness is appropriately selected according to the application. The surface of the paper layer (1) on the lamination side may be subjected to corona discharge treatment or the like so as to be easily adhered.
[0010]
The aliphatic / aromatic copolymerized polyester resin layer (2) is composed of a three-component copolymer resin of terephthalic acid / adipic acid / 1,4-butanediol, and the copolymer resin is formed of a paper layer (1). )) And has excellent biodegradability. When a single layer is melt-extruded, the roll release property is poor. The thickness is preferably 5 to 40 μm.
[0011]
The sealing layer (3) is composed of polylactic acid, polybutylene succinate or a biodegradable resin composed of a starch / polycaprolactone mixture or 10-50% by weight of the aliphatic / aromatic copolymerized polyester resin. It is made of a blended resin obtained by kneading 90 to 50% by weight of a biodegradable resin made of butylene succinate or a starch / polycaprolactone mixture, and has excellent biodegradability while having sealability. The reason why the aliphatic / aromatic copolymerized polyester resin is kneaded with the biodegradable resin as described above is to strengthen the adhesion between the aliphatic / aromatic copolymerized polyester resin layer (2) and the seal layer (3). is there. The thickness is 15 to 50 μm.
[0012]
In addition, a multi-layer structure in which a resin layer having biodegradability and a gas barrier property is further provided between the aliphatic / aromatic copolymerized polyester resin layer (2) and the seal layer (3) may be used. In this case, a gas barrier property can be imparted to the laminated packaging material.
[0013]
【Example】
The laminated packaging material having biodegradability of the present invention will be described below with reference to specific examples, but the present invention is not limited to these examples.
[0014]
<Example 1>
A paperboard for a cup having a basis weight of 270 g / m 2 was used as a material for the paper layer (1), and an aliphatic / aromatic resin manufactured by BASF Corporation was used as a resin for the aliphatic / aromatic copolymerized polyester resin layer (2). A copolyester resin (trade name: Ecoflex) was used, and a polylactic acid resin (trade name: Lacia) was used as a resin for the seal layer (3). Using a co-extrusion laminator, one side of the paperboard is subjected to a corona discharge treatment, a double-layered resin of Ecoflex and Laecia on the treated side, and with Ecoflex on the paper layer side, both extruded resin temperatures of 200 ° C. The coextruded product was set so that the thickness ratio of Ecoflex / Lacia was 30/30 μm, and laminated to prepare a biodegradable laminated packaging material of the present invention.
[0015]
<Comparative Example 1>
Using a paperboard for a cup having a basis weight of 270 g / m 2 as the paper layer (1), using a single-layer extrusion laminating machine, subjecting one side of the paperboard to corona discharge treatment, and extruding Lacia onto the treated surface with resin temperature. Single-layer extrusion was performed at 200 ° C. with a thickness of 40 μm and laminated to prepare a laminated packaging material for comparison.
[0016]
<Comparative Example 2>
In Comparative Example 1, a laminated packaging material for comparison was obtained in the same manner except that lathia was extruded in a single layer at an extrusion resin temperature of 230 ° C. and laminated.
[0017]
<Comparative Example 3>
In Comparative Example 1, a laminated packaging material for comparison was prepared in the same manner except that lathia was extruded in a single layer at an extrusion resin temperature of 260 ° C. and laminated.
[0018]
<Comparative Example 4>
Using a paperboard for a cup having a basis weight of 270 g / m 2 as the paper layer (1), using a single-layer extrusion laminating machine, performing corona discharge treatment on one surface of the paperboard, and extruding Ecoflex onto the treated surface. A single-layer extrusion was performed at a temperature of 200 ° C. and laminated to prepare a laminated packaging material for comparison.
[0019]
<Comparative Example 5>
In Comparative Example 4, a laminated packaging material for comparison was prepared in the same manner except that Ecoflex was extruded in a single layer at an extrusion resin temperature of 230 ° C and laminated.
[0020]
<Evaluation>
The quality of the film-forming property of the resin laminated in the production of the laminated packaging materials of Example 1 and Comparative Examples 1 to 5, the presence or absence of the thermal decomposition odor of the resin, and the quality of the adhesion to the paper layer were evaluated. Table 1 shows the results.
[0021]
[Table 1]
As shown in Table 1, although the extruded resin temperature at the time of lamination of the laminated packaging material of Example 1 was as low as 200 ° C., the film-forming property of the resin was good, and there was no thermal decomposition odor of the resin. Further, the adhesion to the paper layer was strong. The laminated packaging material of Comparative Example 1 was formed by laminating a single layer of polylactic acid resin, the film forming property of the resin at the time of lamination was good, and the resin temperature was low, so that there was no thermal decomposition odor of the resin. The adhesion to the paper layer was poor. Similarly, the laminated packaging material of Comparative Example 2 was formed by laminating a single layer of polylactic acid resin, and the extruded resin temperature at the time of lamination was 230 ° C., so there was no resin decomposition odor, but the film-forming property was poor. The adhesion to the paper layer was also poor. Similarly, the laminated packaging material of Comparative Example 3 was formed by laminating a single layer of polylactic acid resin, and the extruded resin temperature at the time of lamination was 260 ° C., so the adhesion to the paper layer was good, but the film-forming property was poor. There was also a thermal decomposition odor of the resin. The laminated packaging material of Comparative Example 4 is formed by laminating an aliphatic / aromatic copolymerized polyester resin in a single layer, the extruded resin temperature at the time of lamination is 200 ° C., the adhesion to the paper layer is good, and the thermal decomposition odor of the resin is also good. Although there was no resin, the roll releasing property of the resin was poor and the film forming property of the resin was poor. The laminated packaging material of Comparative Example 5 was similarly laminated with a single layer of an aliphatic / aromatic copolymerized polyester resin. The temperature of the extruded resin at the time of lamination was 230 ° C., the adhesion to the paper layer was good, and the resin was thermally decomposed. There was no odor, but the roll release property of the resin was poor, and the film forming property of the resin was poor.
[0023]
【The invention's effect】
The biodegradable laminated packaging material of the present invention has good adhesion to paper on one side of a paper layer, and has three biodegradable terephthalic acid / adipic acid / 1,4-butanediol aliphatic / Aromatic copolymerized polyester resin layer, polylactic acid, polybutylene succinate or a biodegradable resin composed of a starch / polycaprolactone mixture or 10-50% by weight of the aliphatic / aromatic copolymerized polyester resin, polylactic acid, At least two layers including a polybutylene succinate or a seal layer composed of a blend resin kneaded with 90 to 50% by weight of a biodegradable resin composed of a starch / polycaprolactone mixture, and an aliphatic / aromatic copolymerized polyester resin layer as a paper layer Since the two layers are laminated by the co-extrusion method on the side, even if the extruded resin temperature of the two-layer resin is low at the time of lamination, the film forming property is good and the heat Odor even without strongly bonding the resin to the paper layer, and has excellent biodegradability. Therefore, it can be widely used in the field of packaging requiring biodegradability.
[Brief description of the drawings]
FIG. 1 is a side sectional view showing an example of a laminated packaging material having biodegradability of the present invention.
[Explanation of symbols]
1: paper layer 2: aliphatic / aromatic copolymerized polyester resin layer 3: seal layer
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| JP2002259675A JP2004098321A (en) | 2002-09-05 | 2002-09-05 | Biodegradable laminated packaging material |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2002259675A JP2004098321A (en) | 2002-09-05 | 2002-09-05 | Biodegradable laminated packaging material |
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| JP2004098321A true JP2004098321A (en) | 2004-04-02 |
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| JP2002259675A Pending JP2004098321A (en) | 2002-09-05 | 2002-09-05 | Biodegradable laminated packaging material |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008513234A (en) * | 2004-09-09 | 2008-05-01 | インターナショナル・ペーパー・カンパニー | Biodegradable paper-based cup or package and manufacturing method |
| US20110163101A1 (en) * | 2006-07-14 | 2011-07-07 | Dupont Teijin Films U.S. Limited Partnership | Multilayer sealant film |
| JP2011184599A (en) * | 2010-03-09 | 2011-09-22 | Fujimori Kogyo Co Ltd | Resin film having biodegradability and resin film laminate having biodegradability |
| JP2012504195A (en) * | 2008-09-29 | 2012-02-16 | ビーエーエスエフ ソシエタス・ヨーロピア | How to coat paper |
| JP2013522079A (en) * | 2010-03-12 | 2013-06-13 | ストラ エンソ オーワイジェイ | Heat-sealable biodegradable packaging material, manufacturing method thereof and product packaging made from the material |
| CN103649167A (en) * | 2011-07-15 | 2014-03-19 | 沙特基础工业公司 | Color-stabilized biodegradable aliphatic-aromatic copolyesters, methods of manufacture, and articles thereof |
| CN112026321A (en) * | 2020-08-21 | 2020-12-04 | 安徽同光邦飞生物科技有限公司 | Composite preservative film containing polylactic acid and preparation method thereof |
| RU213719U1 (en) * | 2022-02-11 | 2022-09-26 | федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский национальный исследовательский технологический университет" (ФГБОУ ВО "КНИТУ") | BIODEGRADABLE PACKAGING PRODUCT |
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- 2002-09-05 JP JP2002259675A patent/JP2004098321A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008513234A (en) * | 2004-09-09 | 2008-05-01 | インターナショナル・ペーパー・カンパニー | Biodegradable paper-based cup or package and manufacturing method |
| US20110163101A1 (en) * | 2006-07-14 | 2011-07-07 | Dupont Teijin Films U.S. Limited Partnership | Multilayer sealant film |
| US8507084B2 (en) * | 2006-07-14 | 2013-08-13 | Dupont Teijin Films U.S. Limited Partnership | Multilayer sealant film |
| US9073674B2 (en) * | 2006-07-14 | 2015-07-07 | Dupont Teijin Films U.S. Limited Partnership | Multilayer sealant film |
| JP2012504195A (en) * | 2008-09-29 | 2012-02-16 | ビーエーエスエフ ソシエタス・ヨーロピア | How to coat paper |
| JP2011184599A (en) * | 2010-03-09 | 2011-09-22 | Fujimori Kogyo Co Ltd | Resin film having biodegradability and resin film laminate having biodegradability |
| JP2013522079A (en) * | 2010-03-12 | 2013-06-13 | ストラ エンソ オーワイジェイ | Heat-sealable biodegradable packaging material, manufacturing method thereof and product packaging made from the material |
| CN103649167A (en) * | 2011-07-15 | 2014-03-19 | 沙特基础工业公司 | Color-stabilized biodegradable aliphatic-aromatic copolyesters, methods of manufacture, and articles thereof |
| US9334360B2 (en) * | 2011-07-15 | 2016-05-10 | Sabic Global Technologies B.V. | Color-stabilized biodegradable aliphatic-aromatic copolyesters, methods of manufacture, and articles thereof |
| CN112026321A (en) * | 2020-08-21 | 2020-12-04 | 安徽同光邦飞生物科技有限公司 | Composite preservative film containing polylactic acid and preparation method thereof |
| RU213719U1 (en) * | 2022-02-11 | 2022-09-26 | федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский национальный исследовательский технологический университет" (ФГБОУ ВО "КНИТУ") | BIODEGRADABLE PACKAGING PRODUCT |
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