JP5785498B2 - パッケージ用積層体、パッケージ用積層体の製造方法、及びパッケージ用積層体によって作られた包装容器 - Google Patents
パッケージ用積層体、パッケージ用積層体の製造方法、及びパッケージ用積層体によって作られた包装容器 Download PDFInfo
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- JP5785498B2 JP5785498B2 JP2011541137A JP2011541137A JP5785498B2 JP 5785498 B2 JP5785498 B2 JP 5785498B2 JP 2011541137 A JP2011541137 A JP 2011541137A JP 2011541137 A JP2011541137 A JP 2011541137A JP 5785498 B2 JP5785498 B2 JP 5785498B2
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Description
間に乾燥過程を挟む2つの連続するステップによって、溶解され且つ分散せしめられたPVOHと乾燥質量で計算して30重量%のベントナイト粘土との水性ガスバリア組成物からなる2×1g/m2の液体膜コーティングによって、Froviによる320mN CLC/C板紙上にパッケージ用積層体を形成した。
1/Barr Σ1-i = 1/Barr 1 + Barr 2 + ---- + 1/Barr i
1/Total WL = 1/PVOH + bWL + 1/2 × LDPE WL 及び
1/0.49 = 1/PVOHLOPE + 1/1.88
→ PVOHLOPE = 0.66
1/Total WL = 1/PVOH + bWL + 1/(LDPE + 充填HDPE) WL
1/0.23 = 1/PVOHf-LOPE + 1/0.55
→ PVOHf-LOPE = 0.39
A)本発明よるパッケージ用積層体(10a;10b)を製造する方法であり、
−紙又は板紙からなる層(21a)を用意するステップと、
−水性又は溶媒性の液体媒体内に分散せしめられるか又は溶解された重合体バインダを含んでおり更に無機粒子が分散せしめられて含まれている液体ガスバリア組成物を用意するステップと、
−前記紙又は板紙からなる層の第一の側の面に前記液体組成物を膜としてコーティング(22a)し、これに続いて乾燥させて(22b)前記液体を蒸発させることによって、前記重合体バインダと無機粒子とを含む薄い酸素ガスバリア層を形成するステップと、
−ポリオレフィン系重合体マトリックスを含み且つ無機充填材粒子が内部に分散せしめられている溶融加工可能な重合体組成物を用意するステップと、
−溶融押出法を使用して、溶融加工可能な重合体組成物によって水蒸気バリア層(24a;23b;23c)を提供するステップと、
−前記溶融加工可能な組成物による前記溶融押出された水蒸気バリア層(24a;23b;23c)を前記酸素ガスバリア層(21b)の内側の面上に積層させるステップと、
−熱シール可能なポリオレフィンの最も内側の層(15)を前記水蒸気バリア層(24a;23b;23c)の内側の面上に付与するステップと、
−熱シール可能なポリオレフィンからなる最も外側の層(16)をコア層(11)上に付与するステップと、からなることを特徴とする方法。
Claims (20)
- 液体食品の長期保存包装に適したバリア特性を備えた非フォイル型パッケージ用積層体(10a,10b)であって、紙又は板紙からなるコア層(11,11’)と、第一の最も外側の液密で熱シール可能なポリオレフィンからなる層(16)と、第二の最も内側の液密で熱シール可能なポリオレフィンからなる層(15)と、前記紙又は板紙のコア層上に直に隣接して適用され、液体ガスバリア組成物を液体膜コーティングされ且つそれに続いて乾燥されることによって形成される、酸素ガスバリア層(12)とを備え、前記液体ガスバリア組成物は、ガスバリア特性を付与し、ポリビニルアルコール(PVOH)、水分散性エチレンビニルアルコール(EVOH)、多糖、水分散性ポリ塩化ビニリデン(PVDC)若しくは水分散性ポリエステル、又はこれらの2以上の組合せからなる群から選択され、且つ水性又は溶液型媒体内に分散又は溶解されている重合体バインダを含んでおり、
無機粒子も、同じ前記溶液に分散され、その結果、前記酸素ガスバリア層(12)がそれにより、更に前記重合体バインダ内に分散せしめられた層状の無機粒子を含んでおり、
該積層体は、前記適用された酸素ガスバリア層(12)と前記最も内側の液密で熱シール可能なポリオレフィンからなる層(15)との間に配置された水蒸気バリア層(14)を更に備えており、該水蒸気バリア層(14)は、ポリオレフィン系マトリックス重合体と該マトリックス重合体内に分散せしめられた層状の無機充填材粒子とを含んでいる、ことを特徴とする積層体。 - 前記多糖がデンプンである、ことを特徴とする請求項1に記載の積層体。
- 前記液体ガスバリア組成物内に含まれている無機粒子が、主として、縦横比が50〜5000である層状のナノサイズの粘土粒子からなる、ことを特徴とする請求項1又は2に記載の積層体。
- 前記液体ガスバリア組成物内に含まれている無機粒子が、主として、縦横比が10〜500である層状のタルカム粒子からなる、ことを特徴とする請求項1又は2に記載の積層体。
- 前記酸素ガスバリア層(12)が、全量で0.5〜6g/m2の乾燥重量で適用されている、ことを特徴とする請求項1〜4のうちのいずれか一の項に記載の積層体。
- 前記酸素ガスバリア層(12)が、全量で3〜5g/m2の乾燥重量で適用されている、ことを特徴とする請求項1〜4のうちのいずれか一の項に記載の積層体。
- 前記酸素ガスバリア層(12)が、全量で3〜4g/m2の乾燥重量で適用されている、ことを特徴とする請求項1〜4のうちのいずれか一の項に記載の積層体。
- 前記マトリックス重合体が主として高密度ポリエチレン(HDPE)からなる、ことを特徴とする請求項1〜7のうちのいずれか一の項に記載の積層体。
- 前記ポリオレフィン系マトリックス重合体内に含まれている前記無機充填材粒子が、タルカム、マイカ、及び薄片状のナノサイズ粒子から選択されたものである、ことを特徴とする請求項1〜8のうちのいずれか一の項に記載の積層体。
- 前記水蒸気バリア層(14)が、無機粒子を含んでいるポリオレフィン系マトリックス重合体からなる多数の交互のマイクロメータレベルの薄い層(14−1)と、LLDPE、m−LLDPE、VLDPE、エラストマ、及びプラストマからなる群から選択された堅牢な衝撃吸収性重合体の層(14−2)と、を含んでいる、ことを特徴とする請求項1〜9のうちのいずれか一の項に記載の積層体。
- 前記水蒸気バリア層(14)が、ポリオレフィン及びポリオレフィン系接着剤重合体から選択された中間の熱可塑性重合体層(13)によって、紙又は板紙からなる層にコーティングされた前記酸素ガスバリア層に接合されている、ことを特徴とする請求項1〜10のうちのいずれか一の項に記載の積層体。
- 請求項1〜11のうちのいずれか一の項に記載のパッケージ用積層体(10a,10b)を製造する方法であり、
−紙又は板紙からなる層(21a)を用意するステップと、
−ポリビニルアルコール(PVOH)、水分散性エチレンビニルアルコール(EVOH)、多糖、水分散性ポリ塩化ビニリデン(PVDC)若しくは水分散性ポリエステル、又はこれらの2以上の組合せからなる群から選択され、水性又は溶媒性の液体媒体内に分散せしめられるか又は溶解された重合体バインダを含んでおり更に無機粒子が分散せしめられて含まれている液体ガスバリア組成物を用意するステップと、
−前記紙又は板紙からなる層の第一の側の面に直に隣接して前記液体ガスバリア組成物をコーティング(22a)し、これに続いて乾燥させて前記液体を蒸発させることによって、前記重合体バインダと無機粒子とを含む薄い酸素ガスバリア層を形成するステップと、
−ポリオレフィン系重合体マトリックスを含み且つ層状の無機充填材粒子が内部に分散せしめられている溶融加工可能な重合体組成物を用意するステップと、
−溶融押出法を使用して、溶融加工可能な重合体組成物によって水蒸気バリア層(24a;23b;23c)を提供するステップと、
−前記溶融加工可能な組成物による前記溶融押出された水蒸気バリア層(24a;23b;23c)を前記酸素ガスバリア層(21b)の内側の面上に積層させるステップと、
−熱シール可能なポリオレフィンの最も内側の層(15)を前記水蒸気バリア層(24a;23b;23c)の内側の面上に付与するステップと、
−熱シール可能なポリオレフィンからなる最も外側の層(16)をコア層(11)上に付与するステップと、からなることを特徴とする方法。 - 前記酸素ガスバリア層(12)が、乾燥重量で0.5〜6g/m2のトータル量で適用される、ことを特徴とする請求項12に記載の方法。
- 前記酸素ガスバリア層(12)が、乾燥重量で3〜5g/m2のトータル量で適用される、ことを特徴とする請求項12に記載の方法。
- 前記酸素ガスバリア層(12)が、乾燥重量で3〜4g/m2のトータル量で適用される、ことを特徴とする請求項12に記載の方法。
- 前記溶融加工可能な重合体組成物の前記水蒸気バリア層(24a)を用意し且つ前記コーティングされた板紙上に押出コーティング又は同時押出コーティングすることによって前記酸素バリア層(21b)の内側の面上に積層させる、ことを特徴とする請求項12〜15のうちのいずれか一の項に記載の方法。
- 前記溶融加工可能な重合体組成物からなる前記水蒸気バリア層(23b;23c)が、同時押出注型法又は吹出成型法によって膜を提供し、これに続いて該膜を中間の熱可塑性接合層(13;24b;24c)と共に押出積層することによって前記酸素ガスバリア層(21b)の内側の面上に積層させることによって付与される、ことを特徴とする請求項12〜16のうちのいずれか一の項に記載の方法。
- 熱シール可能なポリオレフィンからなる最も内側の層(15)を、前記水蒸気バリア層(24a;23b;23c)と一緒に同じステップにおいて同時押出を使用して形成することによって前記水蒸気バリア層(24a)の内側の面上に付与する、ことを特徴とする請求項16又は17に記載の方法。
- 前記水蒸気バリア層(24a;23b;23c)を、ポリオレフィン及びポリオレフィン系接着剤重合体から選択された中間の熱可塑性重合体層(13)によって、前記バリアがコーティングされた紙又は板紙の層に接合させる、ことを特徴とする請求項12〜18のうちのいずれか一の項に記載の方法。
- 請求項1〜11のうちのいずれか一の項に記載のパッケージ用積層体によって製造された包装容器(30a;30b)。
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US20140030500A1 (en) * | 2011-04-13 | 2014-01-30 | Dow Global Technologies Llc | Microlayer barrier films |
JP5846539B2 (ja) * | 2011-05-23 | 2016-01-20 | 凸版印刷株式会社 | 液体用紙容器 |
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BR112014012938B1 (pt) * | 2011-12-29 | 2021-01-19 | Tetra Laval Holdings & Finance S.A. | laminado e recipiente de acondicionamento |
US20140295031A1 (en) * | 2011-12-29 | 2014-10-02 | Tetra Laval Holdings & Finance S.A | Packaging laminate for a packaging container, as well as a packaging container produced from the packaging laminate |
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Cited By (2)
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JP2020519481A (ja) * | 2017-04-25 | 2020-07-02 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニーE.I.Du Pont De Nemours And Company | 酸素バリア性を有する多糖コーティング |
JP7136810B2 (ja) | 2017-04-25 | 2022-09-13 | ニュートリション・アンド・バイオサイエンシーズ・ユーエスエー・フォー,インコーポレイテッド | 酸素バリア性を有する多糖コーティング |
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RU2519451C2 (ru) | 2014-06-10 |
US8409679B2 (en) | 2013-04-02 |
MX2011006168A (es) | 2011-07-28 |
EP2199077B1 (en) | 2017-04-12 |
EP2199077A1 (en) | 2010-06-23 |
WO2010069451A1 (en) | 2010-06-24 |
JP2012512058A (ja) | 2012-05-31 |
CN102245386A (zh) | 2011-11-16 |
CN102245386B (zh) | 2015-01-21 |
AU2009328741A1 (en) | 2011-07-07 |
US20110248076A1 (en) | 2011-10-13 |
ES2628056T3 (es) | 2017-08-01 |
BRPI0922571A2 (pt) | 2015-12-15 |
AU2009328741B2 (en) | 2013-11-28 |
RU2011129597A (ru) | 2013-01-27 |
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