JP2021160108A - Laminate having biomass-derived resin layer, and paper container for liquid and packaging product using the same - Google Patents

Laminate having biomass-derived resin layer, and paper container for liquid and packaging product using the same Download PDF

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JP2021160108A
JP2021160108A JP2020061667A JP2020061667A JP2021160108A JP 2021160108 A JP2021160108 A JP 2021160108A JP 2020061667 A JP2020061667 A JP 2020061667A JP 2020061667 A JP2020061667 A JP 2020061667A JP 2021160108 A JP2021160108 A JP 2021160108A
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biomass
resin layer
polyethylene
derived
laminate
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絵里 鈴木
Eri Suzuki
政博 浜村
Masahiro Hamamura
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Nippon Paper Industries Co Ltd
Jujo Paper Co Ltd
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Nippon Paper Industries Co Ltd
Jujo Paper Co Ltd
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Priority to PCT/JP2021/012793 priority patent/WO2021200624A1/en
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Abstract

To provide a laminate having a biomass-derived resin layer, the laminate being configured to prevent emanation of an odor of biomass feedstocks from the back side of the laminate having the biomass-derived resin layer, and a paper container for liquid and a packaging product each provided with the laminate.SOLUTION: The present invention provides a laminate 1 in which a biomass polyethylene resin layer 3 containing biomass-derived polyethylene and fossil fuel-derived polyethylene, an odor barrier layer 4, and a thermoplastic resin layer 5 composed mainly of polyethylene are laminated in this order on a back surface of a paper substrate layer 2. An odor from the biomass polyethylene resin layer 3 is blocked by the odor barrier layer 4, so that the odor can be prevented from emanating from the back surface of the laminate.SELECTED DRAWING: Figure 1

Description

本発明は、バイオマス由来の樹脂層を有する積層体、およびそれを用いた液体用紙容器および包装製品に関する。 The present invention relates to a laminate having a resin layer derived from biomass, and a liquid paper container and a packaging product using the same.

近年、地球温暖化対策や循環型社会の構築といった観点から、材料分野において化石燃料の代替品としてバイオマスが広く利用されている。
その利用の１つとして、バイオマス由来のポリエチレンと化石燃料由来のポリエチレンとを含んだバイオマスポリエチレン樹脂が、例えば、紙を基材とする液体用紙容器や包装製品などに用いる積層体に、化石燃料由来のポリエチレンに代わるものとして利用されている。 In recent years, biomass has been widely used as a substitute for fossil fuels in the material field from the viewpoint of global warming countermeasures and the construction of a sound material-cycle society.
As one of its uses, a biomass polyethylene resin containing polyethylene derived from biomass and polyethylene derived from fossil fuel is used, for example, in a laminate used for liquid paper containers and packaging products based on paper, and is derived from fossil fuel. It is used as an alternative to polyethylene.

従来、バイオマスポリエチレン樹脂が利用された積層体として、少なくとも、第１のポリオレフィン樹脂層と、紙基材層と、第２のポリオレフィン樹脂層とを備える積層体であって、前記の第１および第２のポリオレフィン樹脂層がバイオマス由来のポリエチレンと化石燃料由来のポリエチレンとを含むものとした積層体が開示されている（例えば、特許文献１、２参照）。 Conventionally, as a laminate in which a biomass polyethylene resin is used, it is a laminate including at least a first polyolefin resin layer, a paper base material layer, and a second polyolefin resin layer, and the first and first layers are described above. A laminate in which the polyolefin resin layer of No. 2 contains polyethylene derived from biomass and polyethylene derived from fossil fuel is disclosed (see, for example, Patent Documents 1 and 2).

特開２０１８−１６０９号公報Japanese Unexamined Patent Publication No. 2018-1609 特開２０１８−１６１０号公報JP-A-2018-1610

しかし、バイオマス由来のポリエチレンは、その原料に独特の臭気があり、しかも低分子量成分が多く、その低分子量成分は表面にブリードアウトし易い。そのため、バイオマス由来のポリエチレンと化石燃料由来のポリエチレンとを含む第１および第２のポリオレフィン樹脂層から、バイオマス原料の臭気が発散されることになる。このような第１および第２のポリオレフィン樹脂層を備えた積層体で、液体用紙容器や包装製品を成形した場合、その臭気が内容物に移り、例えば内容物が飲料水や食品である場合、その風味や味を損ねてしまうおそれがあるといった問題がある。 However, biomass-derived polyethylene has a peculiar odor as its raw material and has many low molecular weight components, and the low molecular weight components tend to bleed out to the surface. Therefore, the odor of the biomass raw material is emitted from the first and second polyolefin resin layers containing polyethylene derived from biomass and polyethylene derived from fossil fuel. When a liquid paper container or a packaging product is molded with such a laminate provided with the first and second polyolefin resin layers, the odor is transferred to the contents, for example, when the contents are drinking water or food. There is a problem that the flavor and taste may be impaired.

本発明の目的は、少なくとも、バイオマス由来の樹脂層を有する積層体の裏面側からのバイオマス原料の臭気の発散を阻止できるようにしたバイオマス由来の樹脂層を有する積層体、およびそれを備える液体用紙容器および包装製品を提供することにある。 An object of the present invention is at least a laminate having a biomass-derived resin layer capable of preventing the emission of odor of a biomass raw material from the back surface side of the laminate having a biomass-derived resin layer, and a liquid paper containing the same. To provide containers and packaging products.

上記の目的を達成するために、請求項１に記載の発明は、紙基材層の裏面に、バイオマス由来のポリエチレンと、化石燃料由来のポリエチレンとを含んだバイオマスポリエチレン樹脂層と、臭気バリア層と、ポリエチレンを主成分とする熱可塑性樹脂層とが、この順で積層されていることを特徴とする。 In order to achieve the above object, the invention according to claim 1 comprises a biomass polyethylene resin layer containing polyethylene derived from biomass and polyethylene derived from fossil fuel, and an odor barrier layer on the back surface of the paper base material layer. And the thermoplastic resin layer containing polyethylene as a main component are laminated in this order.

請求項１に記載の発明によれば、紙基材層の裏面に、バイオマス由来のポリエチレンと、化石燃料由来のポリエチレンとを含んだバイオマスポリエチレン樹脂層と、臭気バリア層と、ポリエチレンを主成分とする熱可塑性樹脂層とが、この順で積層されているので、バイオマスポリエチレン樹脂層から出る臭気を臭気バリア層で遮断し、積層体の裏面から発散されるのを防止することができ、この積層体で裏面側を内面とする液体用紙容器や包装製品を成形した場合、バイオマスポリエチレン樹脂層から出る臭気が内容物に移ることを防止できるので、例えば内容物が飲料水や食品である場合、その風味や味を損ねてしまうおそれがない。 According to the invention of claim 1, on the back surface of the paper base material layer, a biomass polyethylene resin layer containing polyethylene derived from biomass and polyethylene derived from fossil fuel, an odor barrier layer, and polyethylene as a main component are used. Since the thermoplastic resin layers to be packed are laminated in this order, the odor emitted from the biomass polyethylene resin layer can be blocked by the odor barrier layer and prevented from being emitted from the back surface of the laminated body. When a liquid paper container or packaging product with the back side as the inner surface is molded by the body, the odor emitted from the biomass polyethylene resin layer can be prevented from being transferred to the contents. For example, if the contents are drinking water or food, the odor can be prevented. There is no risk of spoiling the flavor or taste.

請求項２に記載の発明は、請求項１に記載の、前記紙基材層の表面に、バイオマス由来のポリエチレンと、化石燃料由来のポリエチレンとを含んだバイオマスポリエチレン樹脂層が積層されていることを特徴とする。 The invention according to claim 2 is that a biomass polyethylene resin layer containing polyethylene derived from biomass and polyethylene derived from fossil fuel is laminated on the surface of the paper base material layer according to claim 1. It is characterized by.

請求項２に記載の発明によれば、請求項１に記載の、前記紙基材層の表面に、バイオマス由来のポリエチレンと、化石燃料由来のポリエチレンとを含んだバイオマスポリエチレン樹脂層が積層されているので、化石燃料由来のポリエチレンを主成分とする熱可塑性樹脂層が積層されている場合に比べ、化石燃料由来のポリエチレンの使用量の低減が図れ、地球温暖化対策や循環型社会の構築に一層寄与するものとなる。 According to the invention of claim 2, a biomass polyethylene resin layer containing polyethylene derived from biomass and polyethylene derived from fossil fuel is laminated on the surface of the paper base material layer according to claim 1. Therefore, compared to the case where a thermoplastic resin layer containing polyethylene derived from fossil fuel as the main component is laminated, the amount of polyethylene derived from fossil fuel can be reduced, and it is suitable for global warming countermeasures and construction of a recycling society. It will contribute even more.

請求項３に記載の発明は、液体用紙容器であって、請求項１または２に記載の積層体を用いてなることを特徴とする。 The invention according to claim 3 is a liquid paper container, characterized in that the laminate according to claim 1 or 2 is used.

請求項３に記載の発明によれば、液体用紙容器が請求項１または２に記載の積層体を用いて成形されるので、バイオマスポリエチレン樹脂層から出る臭気が内容物に移ることを防止できる液体用紙容器を得ることができる。 According to the invention of claim 3, since the liquid paper container is formed by using the laminate according to claim 1 or 2, a liquid capable of preventing the odor emitted from the biomass polyethylene resin layer from being transferred to the contents. A paper container can be obtained.

請求項４に記載の発明は、包装製品であって、請求項１または２に記載の積層体を用いてなることを特徴とする。 The invention according to claim 4 is a packaged product, and is characterized by using the laminate according to claim 1 or 2.

請求項４に記載の発明によれば、包装製品が請求項１または２に記載の積層体を用いて成形されるので、バイオマスポリエチレン樹脂層から出る臭気が内容物に移ることを防止できる包装製品を得ることができる。 According to the invention of claim 4, since the packaged product is molded by using the laminate according to claim 1 or 2, the packaged product can prevent the odor emitted from the biomass polyethylene resin layer from being transferred to the contents. Can be obtained.

本発明に係るバイオマス由来の樹脂層を有する積層体によれば、バイオマスポリエチレン樹脂層から出る臭気を臭気バリア層で積層体の裏面へ発散されるのを遮断することができ、この積層体を用いて、裏面側を内面とする液体用紙容器や包装製品を成形することにより、バイオマスポリエチレン樹脂層から出る臭気が内容物に移ることを防止できる液体用紙容器や包装製品を得ることができる。 According to the laminate having the resin layer derived from biomass according to the present invention, the odor emitted from the biomass polyethylene resin layer can be blocked from being emitted to the back surface of the laminate by the odor barrier layer, and this laminate is used. By molding the liquid paper container or packaged product having the back surface as the inner surface, it is possible to obtain the liquid paper container or packaged product capable of preventing the odor emitted from the biomass polyethylene resin layer from being transferred to the contents.

本発明に係るバイオマス由来の樹脂層を有する積層体の積層構造の第１例を示す説明図である。It is explanatory drawing which shows the 1st example of the laminated structure of the laminated body which has a resin layer derived from biomass which concerns on this invention. 本発明に係るバイオマス由来の樹脂層を有する積層体の積層構造の第２例を示す説明図である。It is explanatory drawing which shows the 2nd example of the laminated structure of the laminated body which has a resin layer derived from biomass which concerns on this invention.

以下、本発明に係る積層体およびこの積層体を用いた液体用紙容器および包装製品の実施の形態の一例を詳細に説明する。 Hereinafter, an example of the laminate according to the present invention and the embodiment of the liquid paper container and the packaging product using the laminate will be described in detail.

先ず、本発明に係るバイオマス由来の樹脂層を有する積層体の実施の形態の一例を説明する。
図１は本発明に係るバイオマス由来の樹脂層を有する積層体の積層構造の第１例を示す説明図である。 First, an example of an embodiment of a laminate having a biomass-derived resin layer according to the present invention will be described.
FIG. 1 is an explanatory view showing a first example of a laminated structure of a laminated body having a biomass-derived resin layer according to the present invention.

本例のバイオマス由来の樹脂層を有する積層体１（以下、単に積層体という。）は、紙基材層２の裏面に、バイオマス由来のポリエチレンと、化石燃料由来のポリエチレンとを含んだバイオマスポリエチレン樹脂層３と、臭気バリア層４と、ポリエチレンを主成分とする熱可塑性樹脂層５とが、この順で積層されている。 The laminate 1 having the biomass-derived resin layer of this example (hereinafter, simply referred to as the laminate) is a biomass polyethylene containing polyethylene derived from biomass and polyethylene derived from fossil fuel on the back surface of the paper base material layer 2. The resin layer 3, the odor barrier layer 4, and the thermoplastic resin layer 5 containing polyethylene as a main component are laminated in this order.

紙基材層２にあって、紙基材は特に限定されるものではなく、液体用紙容器や包装製品に使用される公知の紙基材が用いられる。
また、本例では、紙基材層２の裏面側が液体用紙容器や包装製品の内面側となっている。 The paper base material in the paper base material layer 2 is not particularly limited, and a known paper base material used for liquid paper containers and packaging products is used.
Further, in this example, the back surface side of the paper base material layer 2 is the inner surface side of the liquid paper container or the packaging product.

紙基材層２の裏面に積層されているバイオマスポリエチレン樹脂層３は、バイオマス由来のポリエチレンと、化石燃料由来のポリエチレンとを含んでいる。 The biomass polyethylene resin layer 3 laminated on the back surface of the paper base material layer 2 contains polyethylene derived from biomass and polyethylene derived from fossil fuel.

バイオマス由来のポリエチレンは、バイオマス由来のエチレンを含むモノマーの重合体からなる。
バイオマス由来のエチレンの製造にあっては、特に限定されるものではなく、公知の方法で製造される。バイオマス由来のエチレンの製造では、植物原料から得られるバイオマス由来の発酵エタノールを原料として用い製造することが好ましい。植物原料としては、例えば、トウモロコシ、サトウキビ、ビートなどが挙げられるが、これらに限られない。また、バイオマス由来のエチレンを含むモノマーを重合する方法は、特に限定されるものではなく、公知の方法で行うことができる。 Biomass-derived polyethylene consists of a polymer of biomass-derived ethylene-containing monomers.
The production of biomass-derived ethylene is not particularly limited, and is produced by a known method. In the production of ethylene derived from biomass, it is preferable to use fermented ethanol derived from biomass obtained from a plant raw material as a raw material. Examples of plant raw materials include, but are not limited to, corn, sugar cane, beet, and the like. The method for polymerizing a monomer containing ethylene derived from biomass is not particularly limited, and a known method can be used.

また、化石燃料由来のポリエチレンは、化石燃料由来のエチレンおよび／またはα−オレフィンを含むモノマーの重合体からなる。
化石燃料由来のエチレンおよび／またはα−オレフィンの製造にあっては、特に限定されるものではなく、公知の方法で製造され、また、化石燃料由来のエチレンおよび／またはα−オレフィンを含むモノマーを重合する方法は特に限定されるものではなく、公知の方法で行うことができる。 Further, the fossil fuel-derived polyethylene is composed of a polymer of a fossil fuel-derived ethylene and / or a monomer containing an α-olefin.
The production of ethylene and / or α-olefin derived from fossil fuel is not particularly limited, and a monomer produced by a known method and containing ethylene and / or α-olefin derived from fossil fuel is used. The method of polymerization is not particularly limited, and a known method can be used.

また、バイオマス由来のポリエチレンと、化石燃料由来のポリエチレンとを含んだバイオマスポリエチレン樹脂層３の製造方法にあっても、特に限定されるものではなく、公知の方法で行うことができる。 Further, the method for producing the biomass polyethylene resin layer 3 containing polyethylene derived from biomass and polyethylene derived from fossil fuel is not particularly limited, and a known method can be used.

臭気バリア層４は、アルミ箔、金属蒸着フィルム、金属以外のセラミック蒸着フィルム、エチレンビニルアルコール共重合体（ＥＶＯＨ）、ポリ塩化ビニリデン（ＰＶＤＣ）、ポリエチレンテレフタレート（ＰＥＴ）、ナイロン樹脂などが素材として使用される。 The odor barrier layer 4 is made of aluminum foil, metal vapor deposition film, ceramic vapor deposition film other than metal, ethylene vinyl alcohol copolymer (EVOH), polyvinylidene chloride (PVDC), polyethylene terephthalate (PET), nylon resin and the like. Will be done.

ポリエチレンを主成分とする熱可塑性樹脂層５は、本例では、高圧法低密度ポリエチレン樹脂（ＬＤＰＥ）を主成分としている。 In this example, the thermoplastic resin layer 5 containing polyethylene as a main component contains a high-pressure method low-density polyethylene resin (LDPE) as a main component.

このような積層構造を有する積層体１の製造の一例を説明する。
先ず、紙基材層２の裏面にバイオマスポリエチレン樹脂層３をラミネートして積層させる。 An example of manufacturing the laminated body 1 having such a laminated structure will be described.
First, the biomass polyethylene resin layer 3 is laminated and laminated on the back surface of the paper base material layer 2.

次に、バイオマスポリエチレン樹脂層３の上に、臭気バリア層４をラミネートして積層させる。次に、臭気バリア層４の上に、ポリエチレンを主成分とする熱可塑性樹脂層５をラミネートして積層させる。 Next, the odor barrier layer 4 is laminated and laminated on the biomass polyethylene resin layer 3. Next, the thermoplastic resin layer 5 containing polyethylene as a main component is laminated and laminated on the odor barrier layer 4.

臭気バリア層４の上へのポリエチレンを主成分とする熱可塑性樹脂層５の積層にあって、臭気バリア層４がエチレンビニルアルコール共重合体（ＥＶＯＨ）、ポリ塩化ビニリデン（ＰＶＤＣ）、ナイロン樹脂などの樹脂で形成される場合は、臭気バリア層４とポリエチレンを主成分とする熱可塑性樹脂層５の素材同士を共押出しによりバイオマスポリエチレン樹脂層３の上にラミネートして積層してもよい。 In the lamination of the thermoplastic resin layer 5 containing polyethylene as a main component on the odor barrier layer 4, the odor barrier layer 4 is an ethylene vinyl alcohol copolymer (EVOH), polyvinylidene chloride (PVDC), nylon resin, etc. In the case of being formed of the above resin, the materials of the odor barrier layer 4 and the thermoplastic resin layer 5 containing polyethylene as a main component may be laminated and laminated on the biomass polyethylene resin layer 3 by coextrusion.

また、臭気バリア層４の素材がアルミ箔や、金属蒸着フィルム、金属以外のセラミック蒸着フィルムの場合は、図示しないが、臭気バリア層４とポリエチレンを主成分とする熱可塑性樹脂層５との間に接着樹脂層を積層する。接着樹脂層を形成する素材としてエチレン・メタクリル酸共重合樹脂（ＥＭＡＡ）が好適である。 When the material of the odor barrier layer 4 is aluminum foil, a metal vapor-deposited film, or a ceramic vapor-deposited film other than metal, it is not shown, but between the odor barrier layer 4 and the thermoplastic resin layer 5 containing polyethylene as a main component. An adhesive resin layer is laminated on the surface. Ethylene / methacrylic acid copolymer resin (EMAA) is suitable as the material for forming the adhesive resin layer.

以上のように構成された本例の積層体１によれば、紙基材層２の裏面に、バイオマスポリエチレン樹脂層３と、臭気バリア層４と、ポリエチレンを主成分とする熱可塑性樹脂層５とが、この順で積層されているので、バイオマスポリエチレン樹脂層３から出る臭気を臭気バリア層４で遮断し、積層体１の裏面から発散されるのを防止することができ、この積層体１で裏面側を内面とする液体用紙容器や包装製品を成形した場合、バイオマスポリエチレン樹脂層３から出る臭気が内容物に移ることを防止できる。 According to the laminated body 1 of this example configured as described above, the biomass polyethylene resin layer 3, the odor barrier layer 4, and the thermoplastic resin layer 5 containing polyethylene as a main component are formed on the back surface of the paper base material layer 2. Since the layers are laminated in this order, the odor emitted from the biomass polyethylene resin layer 3 can be blocked by the odor barrier layer 4 and prevented from being emitted from the back surface of the laminate 1, and the laminate 1 can be prevented from being emitted from the back surface of the laminate 1. When a liquid paper container or a packaged product having the back surface side as the inner surface is molded, it is possible to prevent the odor emitted from the biomass polyethylene resin layer 3 from being transferred to the contents.

図２は本発明に係るバイオマス由来の樹脂層を有する積層体の積層構造の第２例を示す説明図である。
本例の積層体１は、紙基材層２の表面に、バイオマス由来のポリエチレンと、化石燃料由来のポリエチレンとを含んだバイオマスポリエチレン樹脂層６が積層されている。それ以外の構成は第１例と同様であり、第１例の説明を援用する。 FIG. 2 is an explanatory view showing a second example of a laminated structure of a laminated body having a biomass-derived resin layer according to the present invention.
In the laminate 1 of this example, a biomass polyethylene resin layer 6 containing polyethylene derived from biomass and polyethylene derived from fossil fuel is laminated on the surface of the paper base material layer 2. Other configurations are the same as in the first example, and the description of the first example is incorporated.

本例の積層体１によれば、紙基材層２の表面に、バイオマス由来のポリエチレンと、化石燃料由来のポリエチレンとを含んだバイオマスポリエチレン樹脂層６が積層されているので、化石燃料由来のポリエチレンを主成分とする熱可塑性樹脂層が積層されている場合に比べ、化石燃料由来のポリエチレンの使用量の低減が図れ、地球温暖化対策や循環型社会の構築に一層寄与するものとなる。
その他の効果は第１例と同様であり、第１例の説明を援用する。 According to the laminate 1 of this example, the biomass polyethylene resin layer 6 containing polyethylene derived from biomass and polyethylene derived from fossil fuel is laminated on the surface of the paper base material layer 2, and thus is derived from fossil fuel. Compared to the case where a thermoplastic resin layer containing polyethylene as the main component is laminated, the amount of polyethylene derived from fossil fuels can be reduced, which will further contribute to global warming countermeasures and the construction of a recycling-oriented society.
Other effects are the same as in the first example, and the explanation of the first example is incorporated.

なお、本発明に係る積層体１は、上記した第１例、第２例の積層構造に限られるものではなく、紙基材層２の裏面に、バイオマスポリエチレン樹脂層３と、臭気バリア層４と、ポリエチレンを主成分とする熱可塑性樹脂層５とが、この順を変えないで積層されている限り、これらの層の前後や間に他の層が積層されていてもよい。 The laminated body 1 according to the present invention is not limited to the laminated structures of the first and second examples described above, and the biomass polyethylene resin layer 3 and the odor barrier layer 4 are formed on the back surface of the paper base material layer 2. And the thermoplastic resin layer 5 containing polyethylene as a main component are laminated without changing this order, and other layers may be laminated before, after, or between these layers.

次に、前記の積層体１を用いた液体用紙容器および包装製品の実施の形態の一例を詳細に説明する。
本発明に係る液体用紙容器および包装製品は、前記の積層体１を用いて成形されるものであって、公知の成形工程に従って成形される。成形される液体用紙容器および包装製品の形状にあっては特に限定されるものではない。 Next, an example of the embodiment of the liquid paper container and the packaged product using the laminated body 1 will be described in detail.
The liquid paper container and the packaged product according to the present invention are molded using the above-mentioned laminate 1, and are molded according to a known molding process. The shape of the liquid paper container and the packaged product to be molded is not particularly limited.

液体用紙容器および包装製品は、前記の積層体１を用いて成形されるので、バイオマスポリエチレン樹脂層３から出る臭気が内容物に移ることを防止できる液体用紙容器および包装製品を得ることができる。 Since the liquid paper container and the packaged product are molded using the laminate 1, it is possible to obtain the liquid paper container and the packaged product capable of preventing the odor emitted from the biomass polyethylene resin layer 3 from being transferred to the contents.

１ 積層体
２ 紙基材層
３ バイオマスポリエチレン樹脂層
４ 臭気バリア層
５ ポリエチレンを主成分とする熱可塑性樹脂層
６ バイオマスポリエチレン樹脂層
1 Laminate 2 Paper base layer 3 Biomass polyethylene resin layer 4 Odor barrier layer 5 Thermoplastic resin layer containing polyethylene as the main component 6 Biomass polyethylene resin layer

Claims (4)

紙基材層の裏面に、バイオマス由来のポリエチレンと、化石燃料由来のポリエチレンとを含んだバイオマスポリエチレン樹脂層と、臭気バリア層と、ポリエチレンを主成分とする熱可塑性樹脂層とが、この順で積層されていることを特徴とするバイオマス由来の樹脂層を有する積層体。 On the back surface of the paper base material layer, a biomass polyethylene resin layer containing polyethylene derived from biomass and polyethylene derived from fossil fuel, an odor barrier layer, and a thermoplastic resin layer containing polyethylene as a main component are arranged in this order. A laminate having a biomass-derived resin layer, which is characterized by being laminated. 前記紙基材層の表面に、バイオマス由来のポリエチレンと、化石燃料由来のポリエチレンとを含んだバイオマスポリエチレン樹脂層が積層されていることを特徴とするバイオマス由来の樹脂層を有する積層体。 A laminate having a biomass-derived resin layer, wherein a biomass polyethylene resin layer containing polyethylene derived from biomass and polyethylene derived from fossil fuel is laminated on the surface of the paper base material layer. 請求項１または２に記載の積層体を用いてなることを特徴とする液体用紙容器。 A liquid paper container using the laminate according to claim 1 or 2. 請求項１または２に記載の積層体を用いてなることを特徴とする包装製品。
A packaged product comprising the laminate according to claim 1 or 2.
JP2020061667A 2020-03-30 2020-03-30 Laminate having biomass-derived resin layer, and paper container for liquid and packaging product using the same Pending JP2021160108A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014121857A (en) * 2012-12-22 2014-07-03 Nihon Tetra Pak Kk Paper container for filling liquid food and packaging material
JP2015509862A (en) * 2011-12-30 2015-04-02 テトラ・ラヴァル・ホールディングス・アンド・ファイナンス・ソシエテ・アノニムＴｅｔｒａ Ｌａｖａｌ Ｈｏｌｄｉｎｇｓ ＆ Ｆｉｎａｎｃｅ Ｓ．Ａ． Laminating AOM
JP2018001608A (en) * 2016-07-01 2018-01-11 大日本印刷株式会社 Laminate equipped with polyolefin resin layer and packing product equipped with the same
JP2019043147A (en) * 2018-11-29 2019-03-22 大日本印刷株式会社 Laminate for packaging product having biomass-derived resin layer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015509862A (en) * 2011-12-30 2015-04-02 テトラ・ラヴァル・ホールディングス・アンド・ファイナンス・ソシエテ・アノニムＴｅｔｒａ Ｌａｖａｌ Ｈｏｌｄｉｎｇｓ ＆ Ｆｉｎａｎｃｅ Ｓ．Ａ． Laminating AOM
JP2014121857A (en) * 2012-12-22 2014-07-03 Nihon Tetra Pak Kk Paper container for filling liquid food and packaging material
JP2018001608A (en) * 2016-07-01 2018-01-11 大日本印刷株式会社 Laminate equipped with polyolefin resin layer and packing product equipped with the same
JP2019043147A (en) * 2018-11-29 2019-03-22 大日本印刷株式会社 Laminate for packaging product having biomass-derived resin layer

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