JP2014061934A - ガスバリア性包装袋およびそれを用いたガスバリア性包装体の製造方法 - Google Patents
ガスバリア性包装袋およびそれを用いたガスバリア性包装体の製造方法 Download PDFInfo
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- JP2014061934A JP2014061934A JP2012209453A JP2012209453A JP2014061934A JP 2014061934 A JP2014061934 A JP 2014061934A JP 2012209453 A JP2012209453 A JP 2012209453A JP 2012209453 A JP2012209453 A JP 2012209453A JP 2014061934 A JP2014061934 A JP 2014061934A
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- gas barrier
- layer
- packaging bag
- heat
- barrier packaging
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Abstract
【解決手段】加熱処理する被包装物を包装する、熱融着性部材が装着されたガスバリア包装袋において、少なくとも、耐熱性を有するプラスチックフィルムからなる基材層とガスバリア層とシーラント層とが積層されてなる積層体を用いたガスバリア性包装袋であって、
前記ガスバリア層が、無機酸化物蒸着層と被覆層とからなり、前記被覆層が、ポリカルボン酸系重合体と、化学式R1Si(OR2)3で示すシランカップリング剤あるいはその加水分解物およびそれらの縮合物からなる少なくとも1種の珪素含有化合物と、が混合されてなる第一層と、多価金属化合物を有する第二層が順次積層されてなることを特徴とするガスバリア性包装袋である。
【選択図】図1
Description
少なくとも、耐熱性を有するプラスチックフィルムからなる基材層とガスバリア層とシーラント層とが積層されてなる積層体を用いたガスバリア性包装袋であって、
前記ガスバリア層が、無機酸化物蒸着層と被覆層とからなり、
前記被覆層が、ポリカルボン酸系重合体と、化学式R1Si(OR2)3で示すシランカ
ップリング剤あるいはその加水分解物およびそれらの縮合物からなる少なくとも1種の珪素含有化合物と、が混合されてなる第一層と、多価金属化合物を有する第二層が順次積層されてなることを特徴とするガスバリア性包装袋である。
くとも1種の珪素含有化合物(以下、珪素化合物10という)とが混合されてなる第一層7と、多価金属化合物11を有する第二層8が積層されて形成されている。
ルキル基であり、3はn数)を示している。3個のR2はそれぞれ同一であっても異なっていてもよい。
合を形成していてもよい。
チルケトン、ジエチルエーテル、ジオキサン、テトラヒドロフラン、酢酸エチル、酢酸ブチルが挙げられる。また、これらの溶媒は1種単独で用いても、2種以上を混合して用いてもよい。
<コーティング液>
数平均分子量200,000ポリアクリルアミド(PAA)水溶液(東亜合成(株)製、アロンA−10H、固形分濃度25質量%)20gを蒸留水58.9gで溶解した。その後アミノプロピルトリメトキシシラン(APTMS:シグマアルドリッチジャパン(株)製)0.44gを添加し、均一な溶液を作成した。
<コーティング液>
微粒子酸化亜鉛分散液(住友大阪セメント(株)製ZS303、平均粒子径0.02μm、固形分濃度30質量%、分散溶液トルエン)である。
ル殺菌された口栓が装着されたガスバリア性包装袋を得た。
実施例1のPET/無機酸化物蒸着層のフィルムの両面に、厚さ12μmのPETフィルム、厚さ60μmの無延伸ポリプロピレンフィルム(CPPフィルム)を、PETフィルム/PET/無機酸化物蒸着層/CPPフィルムとなるようにドライラミネート法によってラミネートして積層体を得た。ドライラミネートに使用した接着剤は、二液反応型ウレタン系接着剤を用いた。その他は実施例1と同様に行いボイル殺菌された口栓が装着されたガスバリア性包装袋を得た。
実施例1のPET/無機酸化物蒸着層のフィルムとCPPフィルムの間にナイロンフィルム(NY:三菱樹脂(株)製、サントニール、15μm)を設けた以外は、実施例1と同様に行いボイル殺菌された口栓が装着されたガスバリア性包装袋を得た。
実施例1、2および比較例1、2の口栓が装着されたガスバリア性包装袋の酸素ガス透過度を評価した。
2 基材層
3 ガスバリア層
4 シーラント層
5 無機酸化物蒸着層
6 被複層
7 第一層
8 第二層
9 ポリカルボン酸系重合体
10 珪素化合物(化学式R1Si(OR2)3で示すシランカップリング剤あるいはその加水分解物およびそれらの縮合物からなる少なくとも1種の珪素含有化合物)
11 多価金属化合物
20 口栓
21 チャック
22 ノッチ
23 融着部
30 口栓が装着されたガスバリア性包装袋
40 チャックが装着されたガスバリア性包装袋
Claims (4)
- 加熱処理する被包装物を包装する、熱融着性部材が装着されたガスバリア包装袋において、
少なくとも、耐熱性を有するプラスチックフィルムからなる基材層とガスバリア層とシーラント層とが積層されてなる積層体を用いたガスバリア性包装袋であって、
前記ガスバリア層が、無機酸化物蒸着層と被覆層とからなり、
前記被覆層が、ポリカルボン酸系重合体と、化学式R1Si(OR2)3で示すシランカップリング剤あるいはその加水分解物およびそれらの縮合物からなる少なくとも1種の珪素含有化合物と、が混合されてなる第一層と、多価金属化合物を有する第二層が順次積層されてなることを特徴とするガスバリア性包装袋。 - 前記加熱処理が、ボイル殺菌またはレトルト殺菌であることを特徴とする請求項1記載のガスバリア性包装袋。
- 前記無機酸化物蒸着層が、酸化珪素または酸化アルミニウムであることを特徴とする請求項1または2記載のガスバリア性包装袋。
- 請求項1〜3のいずれか1項に記載のガスバリア性包装袋に内容物を充填、シールした後、加熱処理を施すガスバリア性包装体の製造方法。
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WO2003091317A1 (en) * | 2002-04-23 | 2003-11-06 | Kureha Chemical Industry Company, Limited | Film and process for producing the same |
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JP2000006304A (ja) * | 1998-04-24 | 2000-01-11 | Toppan Printing Co Ltd | バリア―性積層体およびこれを用いた包装材料およびこれを用いた包装体 |
WO2003091317A1 (en) * | 2002-04-23 | 2003-11-06 | Kureha Chemical Industry Company, Limited | Film and process for producing the same |
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JP2019171759A (ja) * | 2018-03-29 | 2019-10-10 | 凸版印刷株式会社 | 包装用積層フィルム |
JP7069965B2 (ja) | 2018-03-29 | 2022-05-18 | 凸版印刷株式会社 | 包装用積層フィルム |
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