JP6032786B2 - 二軸延伸ポリブチレンテレフタレートフィルムを含む冷間成形用電池ケース包材 - Google Patents
二軸延伸ポリブチレンテレフタレートフィルムを含む冷間成形用電池ケース包材 Download PDFInfo
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- JP6032786B2 JP6032786B2 JP2011266421A JP2011266421A JP6032786B2 JP 6032786 B2 JP6032786 B2 JP 6032786B2 JP 2011266421 A JP2011266421 A JP 2011266421A JP 2011266421 A JP2011266421 A JP 2011266421A JP 6032786 B2 JP6032786 B2 JP 6032786B2
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- biaxially stretched
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- battery case
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/54—Yield strength; Tensile strength
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/706—Anisotropic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/718—Weight, e.g. weight per square meter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2553/00—Packaging equipment or accessories not otherwise provided for
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- 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
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31786—Of polyester [e.g., alkyd, etc.]
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Laminated Bodies (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Description
[1]外側から基材層、バリア層、シーラント層、または基材層、バリア層、バリア材補強層、シーラント層の順に積層されてなる冷間成形用電池ケース包材において、基材層および/またはバリア材補強層として、二軸延伸ポリブチレンテレフタレート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。
[2]基材層および/またはバリア材補強層が二軸延伸ポリブチレンテレフタレートフィルムを含む複数のフィルムで構成されていることを特徴とする上記[1]に記載の冷間成形用電池ケース包材。
[3]前記二軸延伸ポリブチレンテレフタレートフィルムの4方向(0°(MD)、45°、90°(TD)、135°)すべての引張破断強度が200MPa以上であることを特徴とする上記[1]または[2]に記載の冷間成形用電池ケース包材。
[4]前記二軸延伸ポリブチレンテレフタレートフィルムが、4方向(0°(MD)、45°、90°(TD)、135°)の引張破断強度のうち、最大値と最小値の比が1.5以下のものであることを特徴とする上記[1]〜[3]のいずれか一つに記載の冷間成形用電池ケース包材。
[5]前記二軸延伸ポリブチレンテレフタレートフィルムが、4方向(0°(MD)、45°、90°(TD)、135°)すべての50%モジュラス値が100MPa以上のものであることを特徴とする上記[1]〜[4]のいずれか一つに記載の冷間成形用電池ケース包材。
[6]前記二軸延伸ポリブチレンテレフタレートフィルムが、ポリブチレンテレフタレート樹脂を溶融押出した直後に200℃/秒以上の冷却速度で急冷製膜して得られた未延伸原反を縦横それぞれ2.7〜4.0倍同時二軸延伸することにより得られるものであることを特徴とする上記[1]〜[5]のいずれか一つに記載の冷間成形用電池ケース包材。
(二軸延伸PBTフィルムの原料) 二軸延伸PBTフィルムに用いられる原料は、ブチレンテレフタレートを主たる繰返し単位とするポリエステルであれば特に限定されるものでは無いが、具体的にはグリコール成分としての1,4−ブタンジオール、又はそのエステル形成性誘導体と、二塩基酸成分としてのテレフタル酸、又はそのエステル形成性誘導体を主成分とし、それらを縮合して得られるホモ、またはコポリマータイプのポリエステルである。最適な機械的強度特性を付与するためには、ポリブチレンテレフタレート系樹脂のうち、融点200〜250℃、IV値1.10〜1.35dl/gの範囲のものが好ましく、さらには融点215〜225℃、IV値1.15〜1.30dl/gの範囲のものが特に好ましい。
<実施例1>
(二軸延伸PBTフィルムの製造方法)
140℃で5時間熱風乾燥機にて乾燥したPBT樹脂ペレット(ホモタイプ、融点=224℃、IV値=1.26dl/g)を押出機中、シリンダーおよびダイ温度210〜260℃の各条件で溶融混練して溶融管状薄膜を環状ダイより下方に押し出した。引き続き、冷却マンドレルの外径を通しカラプサロールで折り畳んだ後、引取ニップロールにより1.2m/minの速度で製膜引取りを行った。溶融管状薄膜に直接接触する冷却水の温度は内側、外側ともに20℃であり、原反冷却速度は416℃/秒であった。未延伸原反の厚みは130μm、折径は143mmであり、PBT樹脂中にはあらかじめ滑剤としてステアリン酸マグネシウムを1000ppm添加した。以上の条件で製膜した未延伸原反1を20℃の雰囲気中で低速ニップロール2まで搬送し、図1に示す構造のチューブラー同時二軸延伸装置にて縦横同時二軸延伸を行った。延伸倍率はMDが3.0倍、TDが2.8倍であり、延伸温度は60℃であった。次に、この二軸延伸フィルム7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本発明の二軸延伸PBTフィルムを得た。なお、二軸延伸PBTフィルムの厚みは15μmであった。
原反冷却速度(℃/秒)=(冷却開始点直前の溶融薄膜温度−冷却終了点の原反温度)(℃)/(冷却開始点〜冷却終了点間距離)(m)×冷却開始点〜冷却終了点間の原反の通過速度(m/秒)
得られたラミネート包材の基材層表面に、濃塩酸、および濃フッ酸を一滴ずつ滴下し、室温にて1時間放置した。放置後、滴下した酸を除去し、フィルムの白化、溶解の有無を目視にて確認した。
得られた二軸延伸PBTフィルムの防湿性の評価方法は、JISZ0208に準じて40℃×90%RH環境下での水蒸気透過性(透湿度)を測定し、50g/m2・24Hr未満の場合は◎、50以上〜100g/m2・24Hr以下の場合は○、100g/m2・24Hrより大きい場合は×という基準で評価した。
2 低速ニップロール
3 延伸用ヒーター
4 冷却ショルダーエアーリング
5 カラプサロール
6 高速ニップロール
7 二軸延伸フィルム
Claims (5)
- 外側から基材層、バリア層、シーラント層、または基材層、バリア層、バリア材補強層、シーラント層の順に積層されてなる冷間成形用電池ケース包材において、基材層および/またはバリア材補強層として、4方向(0°(MD)、45°、90°(TD)、135°)すべての50%モジュラス値が100MPa以上の二軸延伸ポリブチレンテレフタレート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。
- 前記二軸延伸ポリブチレンテレフタレートフィルムが、4方向(0°(MD)、45°、90°(TD)、135°)すべての50%モジュラス値が100MPa以上であり、且つ、4方向(0°(MD)、45°、90°(TD)、135°)すべての引張破断強度が200MPa以上であることを特徴とする請求項1に記載の冷間成形用電池ケース包材。
- 前記二軸延伸ポリブチレンテレフタレートフィルムが、さらに、4方向(0°(MD)、45°、90°(TD)、135°)の引張破断強度のうち、最大値と最小値の比が1.5以下のものであることを特徴とする請求項1又は2のいずれか一項に記載の冷間成形用電池ケース包材。
- 基材層および/またはバリア材補強層が、二軸延伸ポリブチレンテレフタレートフィルムを含む複数のフィルムで構成されていることを特徴とする請求項1〜3のいずれか一項に記載の冷間成形用電池ケース包材。
- 前記二軸延伸ポリブチレンテレフタレートフィルムが、ポリブチレンテレフタレート樹脂を溶融押出した直後に200℃/秒以上の冷却速度で急冷製膜して得られた未延伸原反を縦横それぞれ2.7〜4.0倍同時二軸延伸することにより得られるものであることを特徴とする請求項1〜3のいずれか一項に記載の冷間成形用電池ケース包材の製造方法。
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JP2011266421A JP6032786B2 (ja) | 2010-12-24 | 2011-12-06 | 二軸延伸ポリブチレンテレフタレートフィルムを含む冷間成形用電池ケース包材 |
ES11850821.7T ES2638064T3 (es) | 2010-12-24 | 2011-12-22 | Material de envasado en caja de baterías para moldeo en frío que comprende película de poli(tereftalato de butileno) estirado biaxialmente |
CN201180055416.8A CN103222083B (zh) | 2010-12-24 | 2011-12-22 | 含有双向拉伸聚对苯二甲酸丁二醇酯膜的冷成形电池壳包材 |
EP11850821.7A EP2658007B1 (en) | 2010-12-24 | 2011-12-22 | Battery case packaging material for cold molding comprising biaxially-stretched polybutylene terephthalate film |
KR1020137010283A KR101875242B1 (ko) | 2010-12-24 | 2011-12-22 | 2축 연신 폴리부틸렌 테레프탈레이트 필름을 포함하는 냉간 성형용 전지 케이스 포장재 |
PL11850821T PL2658007T3 (pl) | 2010-12-24 | 2011-12-22 | Materiał opakowaniowy na obudowę baterii do kształtowania na zimno obejmujący rozciąganą dwuosiowo folię poli(tereftalanu butylenu) |
US13/990,152 US20130260161A1 (en) | 2010-12-24 | 2011-12-22 | Battery case packaging material for cold molding comprising biaxially-stretched polybutylene terephthalate film |
PCT/JP2011/079770 WO2012086741A1 (ja) | 2010-12-24 | 2011-12-22 | 二軸延伸ポリブチレンテレフタレートフィルムを含む冷間成形用電池ケース包材 |
TW100148383A TWI503221B (zh) | 2010-12-24 | 2011-12-23 | 含有二軸延伸聚對苯二甲酸丁二酯薄膜之冷鍛用電池殼包材 |
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2011
- 2011-12-06 JP JP2011266421A patent/JP6032786B2/ja active Active
- 2011-12-22 ES ES11850821.7T patent/ES2638064T3/es active Active
- 2011-12-22 US US13/990,152 patent/US20130260161A1/en not_active Abandoned
- 2011-12-22 WO PCT/JP2011/079770 patent/WO2012086741A1/ja active Application Filing
- 2011-12-22 PL PL11850821T patent/PL2658007T3/pl unknown
- 2011-12-22 EP EP11850821.7A patent/EP2658007B1/en active Active
- 2011-12-22 KR KR1020137010283A patent/KR101875242B1/ko active IP Right Grant
- 2011-12-22 CN CN201180055416.8A patent/CN103222083B/zh active Active
- 2011-12-23 TW TW100148383A patent/TWI503221B/zh active
Also Published As
Publication number | Publication date |
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PL2658007T3 (pl) | 2017-10-31 |
EP2658007A4 (en) | 2015-06-03 |
CN103222083A (zh) | 2013-07-24 |
EP2658007A1 (en) | 2013-10-30 |
WO2012086741A9 (ja) | 2012-09-13 |
TW201240797A (en) | 2012-10-16 |
TWI503221B (zh) | 2015-10-11 |
ES2638064T3 (es) | 2017-10-18 |
KR101875242B1 (ko) | 2018-07-05 |
JP2012146636A (ja) | 2012-08-02 |
CN103222083B (zh) | 2015-06-10 |
US20130260161A1 (en) | 2013-10-03 |
EP2658007B1 (en) | 2017-06-14 |
WO2012086741A1 (ja) | 2012-06-28 |
KR20140025301A (ko) | 2014-03-04 |
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