JP7010831B2 - 酸素気密性プラスチック、及び酸素気密性プラスチックから製造された包装材料 - Google Patents
酸素気密性プラスチック、及び酸素気密性プラスチックから製造された包装材料 Download PDFInfo
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- JP7010831B2 JP7010831B2 JP2018539112A JP2018539112A JP7010831B2 JP 7010831 B2 JP7010831 B2 JP 7010831B2 JP 2018539112 A JP2018539112 A JP 2018539112A JP 2018539112 A JP2018539112 A JP 2018539112A JP 7010831 B2 JP7010831 B2 JP 7010831B2
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Description
Claims (17)
- ガス透過性が低い包装材料を製造するためのポリマーブレンドであって、
前記ポリマーブレンドは、ポリビニルアルコール(PVOH)と、更なるプラスチックとを含み:
質量ベースの混合比率は、15~70%w/wのポリビニルアルコール(PVOH)と、30~85%w/wの更なるプラスチックとであり;
前記更なるプラスチックは、EN13432及び/又はEN14995に準拠して堆肥化でき、グルコース、リグニン、又はセルロースから製造され、前記ポリビニルアルコール(PVOH)及び前記更なるプラスチックを、混合、融合及び圧縮して、溶融状態の均質な混合物を得ることによって得られることを特徴とする、ポリマーブレンド。 - 前記均質な混合物は、押出成形機又は射出成形機のスクリュを用いて製造できる、請求項1に記載のポリマーブレンド。
- 前記均質な混合物は、続いて顆粒化又は一次成形プロセスに供することができる、請求項1又は2に記載のポリマーブレンド。
- 前記ポリマーブレンドは、顆粒材料として存在する、請求項1~3のいずれか1項に記載のポリマーブレンド。
- ポリマーブレンド、特に請求項1~4のいずれか1項に記載のポリマーブレンドの製造方法であって、
前記方法は、以下のステップ:
(a)ポリビニルアルコール(PVOH)と更なるプラスチックとを混合するステップであって、前記更なるプラスチックと、PVOHとの、質量ベースの混合比は、85:15~30:70である、ステップ;
(b)前記ステップ(a)で得られた混合物を融合、混合及び圧縮して、均質な混合物を得るステップ
を含む、方法。 - (c)前記ステップ(b)で得られた前記均質な混合物を押出成形するステップを更に含む、請求項5に記載の方法。
- (d)前記ステップ(c)で得られた押出成形物を顆粒化するステップを更に含む、請求項6に記載の方法。
- (e)前記均質な混合物、前記押出成形物又は顆粒材料を、一次成形するステップを更に含む、請求項5~7のいずれか1項に記載の方法。
- ガス透過性が低い包装材料を製造するための、請求項1~4のいずれか1項に記載のポリマーブレンドの使用。
- 射出成形、ディープドロー及び/又は牽引によって包装材料を使用するための、請求項9に記載の使用。
- 前記ガス透過性は、ISO15105‐2に従って測定した場合に、0.1~1×10 ‐4 cm 3 /m 2 /日、特に0.15~0.9×10 ‐4 cm 3 /m 2 /日である、請求項9又は10に記載の使用。
- 前記包装材料は生分解性であり、特にEN13432及び/又はEN14995に準拠して堆肥化できる、請求項9~11のいずれか1項に記載の使用。
- 請求項1~4のいずれか1項に記載のポリマーブレンドから少なくともある程度製造された、包装材料。
- 一次成形によって、特に射出成形、ディープドロー及び/又は牽引によって製造される、請求項13に記載の包装材料。
- 前記包装材料は生分解性であり、特にEN13432及び/又はEN14995に準拠して堆肥化できる、請求項13又は14に記載の包装材料。
- 前記包装材料は、ISO15105‐2に従って測定した場合に、0.1~1×10 ‐4 cm 3 /m 2 /日、特に0.15~0.9×10 ‐4 cm 3 /m 2 /日である、ガス透過性、特に酸素透過性を有する、請求項13~15のいずれか1項に記載の包装材料。
- 前記包装材料は、特に食品コンテナとして設計された、食品用の包装材料である、請求項13~16のいずれか1項に記載の包装材料。
以上
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