JP2008119858A - Laminated packaging material - Google Patents

Laminated packaging material Download PDF

Info

Publication number
JP2008119858A
JP2008119858A JP2006303425A JP2006303425A JP2008119858A JP 2008119858 A JP2008119858 A JP 2008119858A JP 2006303425 A JP2006303425 A JP 2006303425A JP 2006303425 A JP2006303425 A JP 2006303425A JP 2008119858 A JP2008119858 A JP 2008119858A
Authority
JP
Japan
Prior art keywords
layer
spiroglycol
ethylene glycol
packaging
packaging 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.)
Pending
Application number
JP2006303425A
Other languages
Japanese (ja)
Inventor
Hiroaki Ogita
弘明 荻田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nihon Tetra Pak KK
Original Assignee
Nihon Tetra Pak KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nihon Tetra Pak KK filed Critical Nihon Tetra Pak KK
Priority to JP2006303425A priority Critical patent/JP2008119858A/en
Publication of JP2008119858A publication Critical patent/JP2008119858A/en
Pending legal-status Critical Current

Links

Landscapes

  • Wrappers (AREA)
  • Laminated Bodies (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a laminated packaging material excellent in aroma retention and having heat sealability necessary for molding a container and melt extrusion laminating characteristics necessary for efficiently manufacturing the laminated packaging material. <P>SOLUTION: The laminated packaging material for food includes a thermoplastic resin outermost layer, a paper base material layer and a sealant innermost layer. The sealant innermost layer comprises a PET polymer obtained by the condensation polymerization of terephthalic acid, ethylene glycol and spiroglycol. This polymer contains ethylene glycol and spiroglycol in a molar ratio of 90-50/10-50 and has heat sealability and melt extrusion laminating characteristics, and the thermoplastic resin outermost layer is also comprises the PET polymer obtained by the condensation polymerization of terephthalic acid, ethylene glycol and spiroglycol and has heat sealability and the melt extrusion laminating characteristics. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、ジュースや牛乳などの液体食品などを充填する紙製包装容器に用いる包装積層材料に関する。 The present invention relates to a packaging laminate material used for a paper packaging container filled with liquid food such as juice or milk.

牛乳、ジュース、ミネラルウォーターなどの飲料、流動食品などの紙包装容器は、例えば、低密度ポリエチレン(LDPE)/印刷インキ層/紙基材層(繊維質キャリア層)/LDPE(接着用押出ラミネート層)/アルミニウム箔(ガスバリア層)/LDPE/LDPE、LDPE/印刷インキ層/紙基材層/LDPE/LDPE、印刷インキ層/LDPE/紙基材層/LDPE/LDPE、また、LDPE/印刷インキ層/紙基材層/LDPE/アルミニウム箔/ポリエステル(PET)等の積層包装材料から得られる。 Paper packaging containers for beverages such as milk, juice, mineral water, and liquid foods are, for example, low density polyethylene (LDPE) / printing ink layer / paper substrate layer (fibrous carrier layer) / LDPE (extruded laminate layer for adhesion) ) / Aluminum foil (gas barrier layer) / LDPE / LDPE, LDPE / printing ink layer / paper substrate layer / LDPE / LDPE, printing ink layer / LDPE / paper substrate layer / LDPE / LDPE, and LDPE / printing ink layer It is obtained from a laminated packaging material such as / paper base material layer / LDPE / aluminum foil / polyester (PET).

積層包装材料は、一般的に、紙基材層の原紙ロールを印刷機に搬入し、原紙面に印刷し印刷済み用紙を再度ロール状に巻き、次いで押出ラミネーターに送り、押出機から溶融ポリオレフィン(例えば、LDPEなど)を原紙面に押し出し、原紙の他にガスバリア層(アルミニウム箔など)がある場合、ガスバリア層との間にも溶融ポリオレフィン押し出してラミネート・コーティングを施して製造する。 In general, a laminated packaging material is obtained by bringing a base paper roll of a paper base layer into a printing machine, printing on the surface of the base paper, winding the printed paper again into a roll, and then feeding it to an extrusion laminator. For example, when there is a gas barrier layer (aluminum foil or the like) in addition to the base paper, LDPE or the like is extruded on the surface of the base paper, and melted polyolefin is extruded between the gas barrier layers to produce a laminate coating.

上記積層包装材料の各々の層は、それぞれが各々の作用・機能を持っている。包装容器の紙の繊維質の基材層には、液密のためのプラスチックコーティングが、この基材層の両側面に設けられていて、水分による浸透から液吸収性繊維質の基材層を効果的に保護する。これらの積層層は、普通、優れたヒートシール性を包装材料に付与し、上述のように、低密度ポリエチレンなどの熱可塑性物質から成っている。 Each layer of the laminated packaging material has its function and function. The fiber base material layer of the packaging container paper is provided with a plastic coating for liquid-tightness on both sides of the base material layer. Protect effectively. These laminated layers usually impart excellent heat sealability to the packaging material and, as described above, are made of a thermoplastic material such as low density polyethylene.

液体食品紙包装容器で用いられる積層材料のポリエチレンは、通常、低密度ポリエチレン(LDPE)であり、特に、高圧法低密度ポリエチレンである。
線形低密度ポリエチレン(LLDPE)も使用されている。特に、メタロセン触媒を用いて重合したエチレンーαオレフィン共重合体(いわゆる、メタロセンPE、mLLDPEと称される)は、低温シール性、フイルムの加工性及び分子量分布が狭いことからの衛生性に良好であり、容器に応用できることが知られている。(特許文献2参照)
The polyethylene of the laminated material used in the liquid food paper packaging container is usually low density polyethylene (LDPE), particularly high pressure method low density polyethylene.
Linear low density polyethylene (LLDPE) is also used. In particular, an ethylene-α-olefin copolymer polymerized using a metallocene catalyst (so-called metallocene PE or mLLDPE) is excellent in hygiene due to low temperature sealability, film processability and narrow molecular weight distribution. It is known that it can be applied to containers. (See Patent Document 2)

紙基材層と上記熱可塑性層だけから成っている積層包装材料では、しかしながら、中身製品の品質を維持することが難しい。
中身製品の品質を維持するためには、中身製品の芳香、風味などが包装材料を透過して外部に飛散することを防止する、又はその芳香、風味などを、中身製品と接触する包装材料が吸収することを防止する、若しくは、包装材料から異臭物などが中身製品に染み出しその芳香、風味など阻害することを防止する保香性と、中身製品の品質を阻害する気体(酸素ガスなど)が包装容器の積層材料器壁などを透過して中身製品を保護するガスバリア性が包装材料に必要になり、保香性及びガスバリア性を十分に具える包装材料が好ましい。
包装材料にガスバリア性を付与するガスバリア材としては、例えば、アルミニウム箔、EVOH(エチレンビニルアルコール、すなわち、エチレン−酢酸ビニルランダム共重合体けん化物)、またはPVOH(ポリビニルアルコール)、無機酸化物の蒸着層などの優れた酸素ガス遮断性を持つ材料が既知である。(特許文献1参照)
However, it is difficult to maintain the quality of the contents product in the laminated packaging material consisting only of the paper base layer and the thermoplastic layer.
In order to maintain the quality of the contents product, it is necessary to prevent the fragrance and flavor of the contents product from passing through the packaging material and scattering to the outside, or to use the packaging material that contacts the fragrance and flavor with the contents product. Perfumes to prevent absorption or odors from oozing out of the packaging material into the contents product, and to inhibit the fragrance, flavor, etc., and gases (oxygen gas etc.) that impair the quality of the contents product However, the packaging material needs a gas barrier property that permeates the laminated container wall of the packaging container and protects the contents product, and a packaging material that has sufficient aroma retaining property and gas barrier property is preferable.
Examples of gas barrier materials that impart gas barrier properties to packaging materials include aluminum foil, EVOH (ethylene vinyl alcohol, that is, saponified ethylene-vinyl acetate random copolymer), PVOH (polyvinyl alcohol), and vapor deposition of inorganic oxides. Materials with excellent oxygen gas barrier properties such as layers are known. (See Patent Document 1)

特開昭63−312143号公報JP-A-63-312143 特開平7−26079号公報JP 7-26079 A

シーラント最内層に低密度ポリエチレンを用いると、中身製品の芳香、風味などを、中身製品と接触する包装材料が吸収し、若しくは、包装材料から異臭物などが中身製品に染み出しその芳香、風味など阻害する恐れがある。
本発明は、保香性に優れ、容器に成形する為に必要なヒートシール性及び包装積層材料を効率的に製造するに必要な溶融押出しラミネート可能特性を備えることができる包装積層材料を提供することを目的とする。
When low-density polyethylene is used for the innermost layer of the sealant, the fragrance, flavor, etc. of the contents product are absorbed by the packaging material that comes into contact with the contents product, or odorous substances ooze out from the packaging material into the contents product, such as the fragrance, flavor, etc. May interfere.
The present invention provides a packaging laminate material that has excellent fragrance retention, heat sealability necessary for molding into a container, and melt extrusion laminateable properties necessary for efficiently producing the packaging laminate material. For the purpose.

この課題を解決する本発明の包装積層材料は、熱可塑性樹脂最外層、紙基材層及び、シーラント最内層を含む包装積層材料であって、
シーラント最内層が、テレフタル酸又はジメチレンテレフタレートと、エチレングリコール及びスピログリコールとの重合によるPETポリマーからなり、このポリマーがエチレングリコールとスピログリコールとのモル比90〜50/10〜50を有し、ヒートシール性及び溶融押出しラミネート可能特性を有し、
熱可塑性樹脂最外層が、テレフタル酸又はジメチレンテレフタレートと、エチレングリコール及びスピログリコールとの縮重合によるPETポリマーからなり、このポリマーがエチレングリコールとスピログリコールとのモル比90〜50/10〜50を有し、ヒートシール性及び溶融押出しラミネート可能特性を有する、ことを特徴とする。
The packaging laminate material of the present invention that solves this problem is a packaging laminate material including a thermoplastic resin outermost layer, a paper base layer, and a sealant innermost layer,
The innermost layer of the sealant consists of a PET polymer by polymerization of terephthalic acid or dimethylene terephthalate and ethylene glycol and spiroglycol, the polymer having a molar ratio of ethylene glycol to spiroglycol of 90-50 / 10-50, It has heat sealability and melt-extrusion laminating properties,
The outermost layer of the thermoplastic resin is made of a PET polymer obtained by condensation polymerization of terephthalic acid or dimethylene terephthalate and ethylene glycol and spiroglycol, and this polymer has a molar ratio of ethylene glycol to spiroglycol of 90 to 50/10 to 50. It has the characteristics of having heat sealability and melt extrusion lamination.

以上の本発明によれば、以下の有利な効果が得られる。
この発明の包装積層材料によれば、最内層が、スピログリコールで変性されたPETポリマーからなり、ヒートシール性及び溶融押出しラミネート可能特性を有する。
包装積層材料を容器に成形する際に、最内層と他方の最内層とを重ね合わせて加熱することによってシールすることができる。また、PET樹脂からなるので保香性に優れ、中身製品の芳香、風味などを吸収することがなく、若しくは、芳香、風味など阻害することがない。
更に、PETポリマーを溶融し包装材料にラミネートして包装積層材料を効率的に製造することができる。
According to the present invention described above, the following advantageous effects can be obtained.
According to the packaging laminate material of the present invention, the innermost layer is made of a PET polymer modified with spiroglycol, and has heat-sealability and melt-extrusion laminating properties.
When the packaging laminate material is formed into a container, the innermost layer and the other innermost layer can be overlapped and heated to be sealed. Moreover, since it consists of PET resin, it is excellent in aroma retention property, does not absorb the fragrance, flavor, etc. of a content product, or does not inhibit fragrance, flavor, etc.
Furthermore, a PET laminate can be melted and laminated to a packaging material to efficiently produce a packaging laminate material.

この発明の包装積層材料によれば、熱可塑性樹脂最外層が、スピログリコールで変性されたPETポリマーからなり、ヒートシール性及び溶融押出しラミネート可能特性を有するので、包装積層材料を容器に成形する際に、最内層と最外層とを重ね合わせて加熱することによってシールすることができる。更に、熱可塑性樹脂最外層のPETポリマーを溶融し包装材料にラミネートして包装積層材料を効率的に製造することができる。 According to the packaging laminate material of the present invention, the outermost layer of the thermoplastic resin is made of a PET polymer modified with spiroglycol and has heat sealability and melt-extrusion laminating characteristics. Therefore, when the packaging laminate material is molded into a container In addition, the innermost layer and the outermost layer can be sealed by heating with overlapping each other. Further, the outermost layer of the thermoplastic resin can be melted and laminated to the packaging material to efficiently produce the packaging laminated material.

以下、本発明の実施の形態について説明する。
この発明の包装積層材料の実施形態において、次の層構造の例がある。
PET外層/PET/紙基材層/PET最内層
PET外層/紙基材層/接着性樹脂/PET最内層
PET外層/接着性樹脂/紙基材層/接着性樹脂/PET最内層
PET外層/紙基材層/低密度ポリエチレン層/アルミ箔層/接着性樹脂/PET最内層
ここで、PET外層は、スピログリコールで変性されたPETポリマーからなり、ヒートシール性及び溶融押出しラミネート可能特性を有する。同様に、また、PET最内層は、スピログリコールで変性されたPETポリマーからなり、ヒートシール性及び溶融押出しラミネート可能特性を有する。
Embodiments of the present invention will be described below.
In the embodiment of the packaging laminate material of the present invention, there is an example of the following layer structure.
PET outer layer / PET / paper substrate layer / PET innermost layer PET outer layer / paper substrate layer / adhesive resin / PET innermost layer PET outer layer / adhesive resin / paper substrate layer / adhesive resin / PET innermost layer PET outer layer / Paper base layer / Low density polyethylene layer / Aluminum foil layer / Adhesive resin / PET innermost layer Here, the PET outer layer is made of PET polymer modified with spiroglycol, and has heat sealability and melt-extrusion laminating properties. . Similarly, the PET innermost layer is made of a PET polymer modified with spiroglycol and has heat-sealability and melt-extrusion laminable properties.

この発明の包装積層材料の実施形態において、基材層は、紙、合成紙、ポリプロピレンにタルクや炭酸カルシウムなどの無機微細粒子を混ぜたフィルム等との複合紙を含む。 In an embodiment of the packaging laminate material of this invention, the base material layer includes composite paper with paper, synthetic paper, a film in which polypropylene is mixed with inorganic fine particles such as talc and calcium carbonate, and the like.

この発明の包装積層材料の実施形態において、シーラント最内層は、テレフタル酸又はジメチレンテレフタレートと、エチレングリコール及びスピログリコールとの縮重合によるPETポリマーからなり、このポリマーがエチレングリコールとスピログリコールとのモル比90〜50/10〜50、好ましくは、モル比85〜70/15〜30を有し、ヒートシール性及び溶融押出しラミネート可能特性を有する。
ここで、スピログリコールは下記化1に示す化学式を有する2価アルコールである。
重合条件、重合度、添加剤及び配合比などは、ヒートシール性及び溶融押出しラミネート可能特性を満足し、損なわない限りにおいて、適宜、変更選択することができる。
In an embodiment of the packaging laminate material of the present invention, the innermost layer of the sealant is composed of a PET polymer obtained by condensation polymerization of terephthalic acid or dimethylene terephthalate and ethylene glycol and spiroglycol, which is a mole of ethylene glycol and spiroglycol. It has a ratio of 90-50 / 10-50, preferably a molar ratio of 85-70 / 15-30, and has heat sealability and melt-extrusion laminating properties.
Here, spiroglycol is a dihydric alcohol having the chemical formula shown in Chemical Formula 1 below.
The polymerization conditions, polymerization degree, additives, blending ratio, and the like can be appropriately changed and selected as long as the heat sealability and melt-extrusion laminating characteristics are satisfied and not impaired.

この発明の包装用積層材料において、外層として、PET最内層と同種の樹脂が用いられる。ただし、重合条件、重合度、添加剤及び配合比などを、最内層と異なるものとすることができる。 In the packaging laminate material of the present invention, the same type of resin as the PET innermost layer is used as the outer layer. However, polymerization conditions, polymerization degree, additives, blending ratio, and the like can be different from those of the innermost layer.

この発明の包装積層材料の任意の実施形態において、付加的積層材の低密度ポリエチレンとして、狭い分子量分布を有する線形低密度ポリエチレンを用いることもできる。この線形低密度ポリエチレンとしては、例えば、メタロセン触媒を用いて重合した狭い分子量分布を有する線形低密度ポリエチレン(mLLDPE)及びその線形低密度ポリエチレンを含有するブレンドポリマーがある。 In any embodiment of the packaging laminate material of this invention, linear low density polyethylene having a narrow molecular weight distribution can also be used as the low density polyethylene of the additional laminate. Examples of the linear low density polyethylene include a linear low density polyethylene (mLLDPE) having a narrow molecular weight distribution polymerized using a metallocene catalyst and a blend polymer containing the linear low density polyethylene.

この発明の包装用積層材料において、その積層方法は、押出し、ドライラミネートなどにより、好ましくは、共押出し工程を含む。また、十分な接着を得るために、上記工程の直前若しくは同時に、層の表面を及び/又は基材の表面を、コロナ、火炎、またはオゾンによる処理などの前処理によって活性化することができる。 In the packaging laminated material of the present invention, the lamination method preferably includes a co-extrusion step by extrusion, dry lamination, or the like. Also, in order to obtain sufficient adhesion, the surface of the layer and / or the surface of the substrate can be activated by pretreatment such as treatment with corona, flame, or ozone immediately before or simultaneously with the above steps.

なお、本発明は前記実施の形態に限定されるものではなく、本発明の趣旨に基づいて種々変形させることが可能であり、それらを本発明の範囲から排除するものではない。 In addition, this invention is not limited to the said embodiment, It can change variously based on the meaning of this invention, and does not exclude them from the scope of the present invention.

この発明の包装容器は、ジュースや牛乳などの液体食品などを充填した包装容器に適用することができる。 The packaging container of the present invention can be applied to a packaging container filled with liquid food such as juice or milk.

Claims (1)

熱可塑性樹脂最外層、紙基材層及び、シーラント最内層を含む包装積層材料であって、
該シーラント最内層が、テレフタル酸又はジメチレンテレフタレートと、エチレングリコール及びスピログリコールとの重合によるPETポリマーからなり、該ポリマーがエチレングリコールとスピログリコールとのモル比90〜50/10〜50を有し、ヒートシール性及び溶融押出しラミネート可能特性を有し、
該熱可塑性樹脂最外層が、テレフタル酸又はジメチレンテレフタレートと、エチレングリコール及びスピログリコールとの重合によるPETポリマーからなり、該ポリマーがエチレングリコールとスピログリコールとのモル比90〜50/10〜50を有し、ヒートシール性及び溶融押出しラミネート可能特性を有する、
ことを特徴とする包装積層材料。
A packaging laminate material comprising an outermost thermoplastic resin layer, a paper base layer, and an innermost sealant layer,
The innermost layer of the sealant is composed of a PET polymer obtained by polymerization of terephthalic acid or dimethylene terephthalate and ethylene glycol and spiroglycol, and the polymer has a molar ratio of ethylene glycol to spiroglycol of 90-50 / 10-50. , Heat sealability and melt extrusion laminateable properties,
The outermost layer of the thermoplastic resin is made of a PET polymer obtained by polymerization of terephthalic acid or dimethylene terephthalate, ethylene glycol and spiroglycol, and the polymer has a molar ratio of ethylene glycol to spiroglycol of 90-50 / 10-50. Having heat sealability and melt extrusion laminateable properties,
Packaging laminated material characterized by the above.
JP2006303425A 2006-11-08 2006-11-08 Laminated packaging material Pending JP2008119858A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006303425A JP2008119858A (en) 2006-11-08 2006-11-08 Laminated packaging material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006303425A JP2008119858A (en) 2006-11-08 2006-11-08 Laminated packaging material

Publications (1)

Publication Number Publication Date
JP2008119858A true JP2008119858A (en) 2008-05-29

Family

ID=39505157

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006303425A Pending JP2008119858A (en) 2006-11-08 2006-11-08 Laminated packaging material

Country Status (1)

Country Link
JP (1) JP2008119858A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011019056A1 (en) * 2009-08-11 2011-02-17 日清食品ホールディングス株式会社 Heat-sealing laminate and method for producing same
CN112823094A (en) * 2018-10-04 2021-05-18 斯道拉恩索公司 Polymer coated paper and paperboard

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0470332A (en) * 1990-07-03 1992-03-05 Toppan Printing Co Ltd Paper cup
JPH04298346A (en) * 1991-03-27 1992-10-22 Du Pont Mitsui Polychem Co Ltd Paper container and laminate used in manufacture thereof
JPH0615784A (en) * 1992-06-30 1994-01-25 Toppan Printing Co Ltd Paper container for liquid
JPH08198236A (en) * 1995-01-24 1996-08-06 Toppan Printing Co Ltd Paper container for liquid
JPH09300544A (en) * 1996-05-20 1997-11-25 Dainippon Printing Co Ltd Heat sealable cover material
JPH11216814A (en) * 1998-01-30 1999-08-10 Nihon Tetrapak Kk Packaging material for paper container and paper container
JP2003211581A (en) * 2002-01-17 2003-07-29 Dainippon Printing Co Ltd Heat-sealable packaging material
JP2003321029A (en) * 2002-02-27 2003-11-11 Mitsubishi Gas Chem Co Inc Hollow container
JP2004035040A (en) * 2002-07-02 2004-02-05 Kanebo Ltd Polyester resin vessel
JP2006256198A (en) * 2005-03-18 2006-09-28 Toppan Printing Co Ltd Paper-made laminate and paper-made container

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0470332A (en) * 1990-07-03 1992-03-05 Toppan Printing Co Ltd Paper cup
JPH04298346A (en) * 1991-03-27 1992-10-22 Du Pont Mitsui Polychem Co Ltd Paper container and laminate used in manufacture thereof
JPH0615784A (en) * 1992-06-30 1994-01-25 Toppan Printing Co Ltd Paper container for liquid
JPH08198236A (en) * 1995-01-24 1996-08-06 Toppan Printing Co Ltd Paper container for liquid
JPH09300544A (en) * 1996-05-20 1997-11-25 Dainippon Printing Co Ltd Heat sealable cover material
JPH11216814A (en) * 1998-01-30 1999-08-10 Nihon Tetrapak Kk Packaging material for paper container and paper container
JP2003211581A (en) * 2002-01-17 2003-07-29 Dainippon Printing Co Ltd Heat-sealable packaging material
JP2003321029A (en) * 2002-02-27 2003-11-11 Mitsubishi Gas Chem Co Inc Hollow container
JP2004035040A (en) * 2002-07-02 2004-02-05 Kanebo Ltd Polyester resin vessel
JP2006256198A (en) * 2005-03-18 2006-09-28 Toppan Printing Co Ltd Paper-made laminate and paper-made container

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011019056A1 (en) * 2009-08-11 2011-02-17 日清食品ホールディングス株式会社 Heat-sealing laminate and method for producing same
US9789670B2 (en) 2009-08-11 2017-10-17 Nissin Foods Holdings Co., Ltd. Heat-sealable laminate and method for producing same
CN112823094A (en) * 2018-10-04 2021-05-18 斯道拉恩索公司 Polymer coated paper and paperboard
CN112823094B (en) * 2018-10-04 2023-07-25 斯道拉恩索公司 Polymer coated paper and paperboard

Similar Documents

Publication Publication Date Title
JP2009525900A (en) Biodegradable paper substrate laminate having oxygen and moisture barrier properties and method for producing biodegradable paper substrate laminate
JP5156161B2 (en) Multilayer resin / paper laminate structure comprising at least one polymer / nanoclay composite layer and packaging material produced thereby
JP2023075140A (en) Laminated film for packaging materials and packaging bags
EP3366470A1 (en) Laminated sheet and formed container
JP6573607B2 (en) Easy-cut absorbable laminate and packaging bag using the same
JP4974893B2 (en) Packaging laminate material
JP6160340B2 (en) Packaging materials
JP3260530B2 (en) Multi-layer products
WO2000003871A1 (en) Easily tearable laminated barrier film and bag product made using the same
TW201236935A (en) Improved composite system for packages
JP2004509030A (en) Packaging laminates and packaging containers made therefrom
JP6699083B2 (en) Laminated film and packaging
JP2010208174A (en) Multi-layer sheet for body member of insulating paper container, method of manufacturing the same and insulating paper container
JP2008119858A (en) Laminated packaging material
JP2003300292A (en) Plastic multilayer structure
JP2008119859A (en) Laminated packaging material
JP5751031B2 (en) Packaging material and paper container comprising the same
JP6699082B2 (en) Laminated film and packaging
JP2007176538A (en) Paper container
JP2007216457A (en) Laminated film
JP2015128907A (en) Packaging material and paper container formed of the same
JP2007176539A (en) Paper container, and method for manufacturing paper container
WO2007069615A1 (en) Thermally shrinkable void-containing laminate film and thermally shrinkable void-containing film
JP2009040460A (en) Packaging laminated material and method for manufacturing packaging laminated material
JP6706427B2 (en) Laminate

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20090702

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110119

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110401

A02 Decision of refusal

Effective date: 20110907

Free format text: JAPANESE INTERMEDIATE CODE: A02