JP2011213929A - 冷間成形用二軸延伸ナイロンフィルム - Google Patents
冷間成形用二軸延伸ナイロンフィルム Download PDFInfo
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- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Manufacture Of Macromolecular Shaped Articles (AREA)
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
【解決手段】
ナイロン樹脂原料100重量部に対して無機フィラーを0.15〜1重量部配合することにより、0.1MPa圧力下におけるフィルム対金属の動摩擦係数を0.20以下に制御した二軸延伸ナイロンフィルムを冷間成形用包材、特にリチウムイオン二次電池等の電池ケース用包材の主要基材として用いることを特徴としている。
【選択図】図1
Description
(2)ナイロン樹脂100重量部に対し、無機フィラーを0.15〜1重量部配合してなることを特徴とする前項(1)記載の冷間成形用二軸延伸ナイロンフィルム。
(3)少なくとも基材層、バリア層、シーラント層により形成された冷間成形用電池ケース包材において、前記基材層として、前項(1)または(2)に記載の冷間成形用二軸延伸ナイロンフィルムを用いることを特徴とする冷間成形用電池ケース包材。
(4)前項(3)に記載の冷間成形用電池ケース包材を使用し、シーラント層が内面になるように張り出し成形、または深絞り成形して凹部分を形成した電池ケース。
(5)前項(4)に記載の電池ケースの凹部分に電池本体を収納し、密封されていることを特徴とする電池。
<二軸延伸ナイロンフィルムの原料> 本発明の二軸本発明の二軸延伸ナイロンフィルムのナイロン樹脂原料は、ポリアミド系樹脂であれば特に限定されるものでは無い。例えば、ナイロン6、ナイロン66、ナイロン11、ナイロン12、ナイロン610、ナイロン612、ナイロン6,66,12共重合体、その他ポリアミド系共重合体、ナイロンMXD6、アラミド、ポリアミドイミド(PAI)、芳香族ポリイミド、ポリエーテルイミド(PEI)、ポリマレイミドアミン(PMIA)、ポリアミノビスマレイミド(PABM)などが挙げられるが、生産性や冷間成形性、強度物性を主としたフィルム物性の観点からナイロン6がもっとも好ましい。また、ナイロン6原料において、数平均分子量は10000〜30000が好ましく、特に好ましくは22000〜24000である。数平均分子量が10000未満の場合、得られたONyフィルムの衝撃強度や引張強度が不十分である。また数平均分子量が30000より大きい場合、分子鎖の絡み合いが著しく、延伸加工により過度なひずみが生じるため、延伸加工時に破断やパンクが頻繁に発生し、安定的に生産出来ない。
実施例1 <二軸延伸ナイロンフィルムの製造> ナイロン樹脂原料100重量部に対して無機フィラーとして球状シリカ(平均粒子径2.0μm)を0.15重量部、撥水剤としてエチレンビスステアリン酸ナトリウムを0.07重量部均一にブレンドしたナイロン6ペレット(相対粘度3.48)を押出機中、255℃で溶融混練した後、溶融物をダイスから円筒状のフィルムとして押出し、引き続き水で急冷して原反フィルムを作製した。次に、図1に示したように、この原反フィルムを一対の低速ニップロール1間に挿通した後、中に空気を圧入しながらヒーター2、およびヒーター3で加熱すると共に、延伸終了点にエアーリング4よりエアーを吹き付けることにより、チューブラー法によるMD、およびTD同時二軸延伸フィルム5を得た。延伸倍率は、MDが3.0倍、TDが3.2倍であった。次に、この延伸フィルム5を熱ロール式、およびテンター式熱処理設備にそれぞれ投入し、210℃で熱処理を施すことにより二軸延伸ナイロンフィルムを得た。なお、二軸延伸ナイロンフィルムの厚みは15μmであった。
2 チューブラー延伸装置の予熱ヒーター
3 チューブラー延伸装置の主熱ヒーター
4 チューブラー延伸装置の冷却エアーリング
5 チューブラー延伸時のフィルム
Claims (5)
- 0.1MPa圧力下におけるフィルム対金属の動摩擦係数が0.20以下であることを特徴とする冷間成形用二軸延伸ナイロンフィルム。
- ナイロン樹脂100重量部に対し、無機フィラーを0.15〜1重量部配合してなることを特徴とする請求項1記載の冷間成形用二軸延伸ナイロンフィルム。
- 少なくとも基材層、バリア層、シーラント層により形成された冷間成形用電池ケース包材において、前記基材層として、請求項1または請求項2に記載の冷間成形用二軸延伸ナイロンフィルムを用いることを特徴とする冷間成形用電池ケース包材。
- 請求項3に記載の冷間成形用電池ケース包材を使用し、シーラント層が内面になるように張り出し成形、または深絞り成形して凹部分を形成した電池ケース。
- 請求項4に記載の電池ケースの凹部分に電池本体を収納し、密封されていることを特徴とする電池。
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