JP2017071414A - 包装材、ケースおよび蓄電デバイス - Google Patents
包装材、ケースおよび蓄電デバイス Download PDFInfo
- Publication number
- JP2017071414A JP2017071414A JP2015199410A JP2015199410A JP2017071414A JP 2017071414 A JP2017071414 A JP 2017071414A JP 2015199410 A JP2015199410 A JP 2015199410A JP 2015199410 A JP2015199410 A JP 2015199410A JP 2017071414 A JP2017071414 A JP 2017071414A
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- layer
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- packaging material
- adhesive
- resistant resin
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Links
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Images
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Abstract
Description
前記耐熱性樹脂層は、熱水収縮率が1.5%〜12%である耐熱性樹脂フィルムからなり、
前記耐熱性樹脂層と前記金属箔層とが外側接着剤層を介して接着され、
前記外側接着剤層は、ポリオールと、多官能イソシアネート化合物と、イソシアネート基と反応し得る官能基を1分子中に複数個有する脂肪族化合物と、を含むウレタン接着剤で形成されていることを特徴とする包装材。
前項1〜8のいずれか1項に記載の包装材及び/又は請求項9に記載のケースからなる外装部材とを備え、
前記蓄電デバイス本体部が、前記外装部材で外装されていることを特徴とする蓄電デバイス。
前記積層物を37℃〜55℃の範囲の温度で加熱エージング処理を行うことによって前記硬化型内側接着剤および前記硬化型外側接着剤を硬化させるエージング処理工程と、を包含することを特徴とする包装材の製造方法。
X:浸漬処理前の延伸方向の寸法
Y:浸漬処理後の延伸方向の寸法。
1)リン酸と、
クロム酸と、
フッ化物の金属塩及びフッ化物の非金属塩からなる群より選ばれる少なくとも1種の化合物と、を含む混合物の水溶液
2)リン酸と、
アクリル系樹脂、キトサン誘導体樹脂及びフェノール系樹脂からなる群より選ばれる少なくとも1種の樹脂と、
クロム酸及びクロム(III)塩からなる群より選ばれる少なくとも1種の化合物と、を含む混合物の水溶液
3)リン酸と、
アクリル系樹脂、キトサン誘導体樹脂及びフェノール系樹脂からなる群より選ばれる少なくとも1種の樹脂と、
クロム酸及びクロム(III)塩からなる群より選ばれる少なくとも1種の化合物と、
フッ化物の金属塩及びフッ化物の非金属塩からなる群より選ばれる少なくとも1種の化合物と、を含む混合物の水溶液
上記1)〜3)のうちのいずれかの水溶液を塗工した後、乾燥することにより、化成処理を施す。
厚さ35μmのアルミニウム箔(JIS H4160に規定されるA8079のアルミニウム箔)4の両面に、リン酸、ポリアクリル酸(アクリル系樹脂)、クロム(III)塩化合物、水、アルコールからなる化成処理液を塗布した後、180℃で乾燥を行って、化成皮膜を形成した。この化成皮膜のクロム付着量は片面当たり10mg/m2であった。
ジカルボン酸成分として、アジピン酸(脂肪族ジカルボン酸)40モル部およびイソフタル酸(芳香族ジカルボン酸)60モル部からなるジカルボン酸成分を用いた以外は、実施例1と同様にして、図2に示す構成の包装材1を得た。
ジカルボン酸成分として、アジピン酸(脂肪族ジカルボン酸)30モル部およびイソフタル酸(芳香族ジカルボン酸)70モル部からなるジカルボン酸成分を用いた以外は、実施例1と同様にして、図2に示す構成の包装材1を得た。
前記2軸延伸ポリアミドフィルム2として、熱水収縮率が5.0%である2軸延伸ポリアミドフィルムを用いた以外は、実施例3と同様にして、図2に示す構成の包装材1を得た。前記熱水収縮率が5.0%の2軸延伸ポリアミドフィルムは、ポリアミドフィルムを2軸延伸加工する際の熱固定温度を191℃に設定することにより得た。
前記2軸延伸ポリアミドフィルム2として、熱水収縮率が10.0%である2軸延伸ポリアミドフィルムを用いた以外は、実施例3と同様にして、図2に示す構成の包装材1を得た。前記熱水収縮率が10.0%の2軸延伸ポリアミドフィルムは、ポリアミドフィルムを2軸延伸加工する際の熱固定温度を160℃に設定することにより得た。
熱硬化型外側接着剤について、ポリエステルポリオールの水酸基(OH)のモル数に対するトリレンジイソシアネート(TDI)のイソシアネート基(NCO)のモル数の比率(当量比[NCO]/[OH])を25に設定した以外は、実施例3と同様にして、図2に示す構成の包装材1を得た。
数平均分子量25000のポリエステルポリオール100質量部に代えて、数平均分子量28000のポリエーテルポリオール100質量部を使用した以外は、実施例3と同様にして、図2に示す構成の包装材1を得た。
トリレンジイソシアネート(TDI)25質量部に代えて、ジフェニルメタンジイソシアネート(MDI)25質量部を使用した以外は、実施例3と同様にして、図2に示す構成の包装材1を得た。
トリメチロールプロパン(TMP)10質量部に代えて、エチレングリコール(EG)6質量部を使用した以外は、実施例3と同様にして、図2に示す構成の包装材1を得た。
トリメチロールプロパン(TMP)10質量部に代えて、グリセリン9質量部を使用した以外は、実施例3と同様にして、図2に示す構成の包装材1を得た。
易接着層8を設けないものとした以外は、実施例3と同様にして、図1に示す構成の包装材1を得た。即ち、実施例3で、アルミニウム箔4の一方の面の外側接着剤塗布面に、易接着層付きポリアミドフィルムの易接着層側の面を重ね合わせて貼り合わせていたが、これに代えて、アルミニウム箔4の一方の面の外側接着剤塗布面に、熱水収縮率が2.0%であり、厚さが15μmの2軸延伸ポリアミドフィルムを重ね合わせて貼り合わせるようにした。
ジカルボン酸成分として、アジピン酸(脂肪族ジカルボン酸)70モル部およびイソフタル酸(芳香族ジカルボン酸)30モル部からなるジカルボン酸成分を用いた以外は、実施例11と同様にして、図1に示す構成の包装材1を得た。
ジカルボン酸成分として、アジピン酸(脂肪族ジカルボン酸)70モル部およびイソフタル酸(芳香族ジカルボン酸)30モル部からなるジカルボン酸成分を用いた以外は、実施例1と同様にして、図2に示す構成の包装材1を得た。
易接着層8を設けないものとすると共に、ジカルボン酸成分として、アジピン酸(脂肪族ジカルボン酸)10モル部およびイソフタル酸(芳香族ジカルボン酸)90モル部からなるジカルボン酸成分を用いた以外は、実施例6と同様にして、図1に示す構成の包装材1を得た。
ジカルボン酸成分として、アジピン酸(脂肪族ジカルボン酸)10モル部およびイソフタル酸(芳香族ジカルボン酸)90モル部からなるジカルボン酸成分を用いた以外は、実施例6と同様にして、図2に示す構成の包装材1を得た。
易接着層8を設けないものとした以外は、実施例1と同様にして、図1に示す構成の包装材1を得た。即ち、実施例1で、アルミニウム箔4の一方の面の外側接着剤塗布面に、易接着層付きポリアミドフィルムの易接着層側の面を重ね合わせて貼り合わせていたが、これに代えて、アルミニウム箔4の一方の面の外側接着剤塗布面に、熱水収縮率が2.0%であり、厚さ15μmの2軸延伸ポリアミドフィルムを重ね合わせて貼り合わせるようにした。
易接着層8を設けないものとした以外は、実施例2と同様にして、図1に示す構成の包装材1を得た。即ち、実施例2で、アルミニウム箔4の一方の面の外側接着剤塗布面に、易接着層付きポリアミドフィルムの易接着層側の面を重ね合わせて貼り合わせていたが、これに代えて、アルミニウム箔4の一方の面の外側接着剤塗布面に、熱水収縮率が2.0%であり、厚さ15μmの2軸延伸ポリアミドフィルムを重ね合わせて貼り合わせるようにした。
易接着層8を設けないものとした以外は、実施例3と同様にして、図1に示す構成の包装材1を得た。即ち、実施例3で、アルミニウム箔4の一方の面の外側接着剤塗布面に、易接着層付きポリアミドフィルムの易接着層側の面を重ね合わせて貼り合わせていたが、これに代えて、アルミニウム箔4の一方の面の外側接着剤塗布面に、熱水収縮率が2.0%であり、厚さ15μmの2軸延伸ポリアミドフィルムを重ね合わせて貼り合わせるようにした。
易接着層8を設けないものとした以外は、実施例6と同様にして、図1に示す構成の包装材1を得た。即ち、実施例6で、アルミニウム箔4の一方の面の外側接着剤塗布面に、易接着層付きポリアミドフィルムの易接着層側の面を重ね合わせて貼り合わせていたが、これに代えて、アルミニウム箔4の一方の面の外側接着剤塗布面に、熱水収縮率が2.0%であり、厚さ15μmの2軸延伸ポリアミドフィルムを重ね合わせて貼り合わせるようにした。
前記2軸延伸ポリアミドフィルム2として、熱水収縮率が1.0%である2軸延伸ポリアミドフィルムを用いた以外は、実施例12と同様にして、包装材を得た。前記熱水収縮率が1.0%の2軸延伸ポリアミドフィルムは、ポリアミドフィルムを2軸延伸加工する際の熱固定温度を221℃に設定することにより得た。
前記2軸延伸ポリアミドフィルム2として、熱水収縮率が1.0%である2軸延伸ポリアミドフィルムを用いた以外は、実施例14と同様にして、包装材を得た。前記熱水収縮率が1.0%の2軸延伸ポリアミドフィルムは、ポリアミドフィルムを2軸延伸加工する際の熱固定温度を221℃に設定することにより得た。
前記2軸延伸ポリアミドフィルム2として、熱水収縮率が1.0%である2軸延伸ポリアミドフィルムを用いた以外は、実施例1と同様にして、包装材を得た。前記熱水収縮率が1.0%の2軸延伸ポリアミドフィルムは、ポリアミドフィルムを2軸延伸加工する際の熱固定温度を221℃に設定することにより得た。
前記2軸延伸ポリアミドフィルム2として、熱水収縮率が1.0%である2軸延伸ポリアミドフィルムを用いた以外は、実施例2と同様にして、包装材を得た。前記熱水収縮率が1.0%の2軸延伸ポリアミドフィルムは、ポリアミドフィルムを2軸延伸加工する際の熱固定温度を221℃に設定することにより得た。
前記2軸延伸ポリアミドフィルム2として、熱水収縮率が1.0%である2軸延伸ポリアミドフィルムを用いた以外は、実施例3と同様にして、包装材を得た。前記熱水収縮率が1.0%の2軸延伸ポリアミドフィルムは、ポリアミドフィルムを2軸延伸加工する際の熱固定温度を221℃に設定することにより得た。
前記2軸延伸ポリアミドフィルム2として、熱水収縮率が1.0%である2軸延伸ポリアミドフィルムを用いた以外は、実施例6と同様にして、包装材を得た。前記熱水収縮率が1.0%の2軸延伸ポリアミドフィルムは、ポリアミドフィルムを2軸延伸加工する際の熱固定温度を221℃に設定することにより得た。
前記2軸延伸ポリアミドフィルム2として、熱水収縮率が15.0%である2軸延伸ポリアミドフィルムを用いた以外は、実施例3と同様にして、包装材を得た。前記熱水収縮率が15.0%の2軸延伸ポリアミドフィルムは、ポリアミドフィルムを2軸延伸加工する際の熱固定温度を135℃に設定することにより得た。
熱硬化型外側接着剤として、数平均分子量25000のポリエステルポリオール100質量部、トリレンジイソシアネート(TDI)25質量部を含有する熱硬化型外側接着剤(TMP等の脂肪族化合物を非含有)を使用した以外は、実施例3と同様にして、包装材を得た。
実施例、比較例で使用した各外側接着剤を熱硬化させた硬化膜のヤング率(MPa)をJIS K7127−1999に準拠して測定した。具体的には、各外側接着剤をガラス板の上に50μmの厚さで塗布した後、40℃で11日間加熱エージング処理を行って、外側接着剤を熱硬化させて厚さ46μmの硬化物を得た。前記硬化物をガラス板から剥がした後、幅15mm×長さ100mmの大きさに切り出して試験片を作製し、島津製作所製ストログラフ(AGS−5kNX)を使用して引張速度200mm/分で前記試験片の引張試験を行ってヤング率(MPa)を測定した。
株式会社アマダ製の深絞り成形具を用いて包装材に対して縦55mm×横35mm×各深さの略直方体形状(1つの面が開放された略直方体形状)に深絞り成形を行い、即ち成形深さを変えて深絞り成形を行い、得られた成形体におけるコーナー部におけるピンホール及び割れの有無を調べ、このようなピンホール及び割れが発生しない「最大成形深さ(mm)」を調べ、下記判定基準に基づいて評価した。なお、ピンホールや割れの有無は、暗室にて光透過法で調べた。
(判定基準)
「○」…ピンホール及び割れが発生しない最大成形深さが5mm以上である
「△」…ピンホール及び割れが発生しない最大成形深さが4mm以上5mm未満である
「×」…ピンホール及び割れが発生しない最大成形深さが4mm未満である。
成形深さの深い成形として、上記深絞り成形具を用いて包装材に対して縦55mm×横35mm×5mmの略直方体形状(1つの面が開放された略直方体形状)に深絞り成形を行った。この時、耐熱性樹脂層2が成形体の外側になるように成形を行った。各実施例、各比較例毎にそれぞれ2個の成形体を作製し、2個の成形体10のフランジ部(封止用周縁部;図4参照)29同士を接触させて重ね合わせて170℃×6秒間ヒートシールを行った後、目視観察によりヒートシール部39におけるデラミネーション(剥離)発生の有無および外観の浮きの有無を調べ、下記判定基準に基づいて評価した。
(判定基準)
「○」…デラミネーション(剥離)が認められず、且つ外観の浮きも認められなかった(合格)
「△」…僅かなデラミネーション(剥離)が稀に発生することがあるが、実質的にはデラミネーション(剥離)が無く、且つ外観の浮きもなかった(合格)
「×」…デラミネーション(剥離)が発生しており、外観の浮きもあった(不合格)。
上記深絞り成形具を用いて包装材に対して縦55mm×横35mm×5mmの略直方体形状(1つの面が開放された略直方体形状)に深絞り成形を行った。この時、耐熱性樹脂層2が成形体の外側になるように成形を行った。各実施例、各比較例毎にそれぞれ2個の成形体を作製し、2個の成形体10のフランジ部(封止用周縁部;図4参照)29同士を接触させて重ね合わせて170℃×6秒間ヒートシールを行い、次にヒートシール物を85℃の熱水中に240時間浸漬した後、取り出して、目視観察によりヒートシール部39におけるデラミネーション(剥離)発生の有無および外観の浮きの有無を調べ、下記判定基準に基づいて評価した。
(判定基準)
「○」…デラミネーション(剥離)が認められず、且つ外観の浮きも認められなかった(合格)
「△」…僅かなデラミネーション(剥離)が稀に発生することがあるが、実質的にはデラミネーション(剥離)が無く、且つ外観の浮きもなかった(合格)
「×」…デラミネーション(剥離)が発生しており、外観の浮きもあった(不合格)。
得られた包装材から幅15mm×長さ150mmの試験体を切り出し、この試験体の長さ方向の一端から10mm内方に入った位置までの領域においてアルミニウム箔と耐熱性樹脂層の間で剥離せしめた。
(判定基準)
「○」…ラミネート強度が「2.0N/15mm幅」以上であった
「△」…ラミネート強度が「1.5N/15mm幅」以上「2.0N/15mm幅」未満であった
「×」…ラミネート強度が「1.5N/15mm幅」未満であった。
2…耐熱性樹脂層(外側層)
3…熱融着性樹脂層(内側層)
4…金属箔層
5…第1接着剤層(外側接着剤層)
6…第2接着剤層(内側接着剤層)
8…易接着層
10…ケース(成形ケース)
15…外装部材
30…蓄電デバイス
31…蓄電デバイス本体部
Claims (13)
- 外側層としての耐熱性樹脂層と、内側層としての熱融着性樹脂層と、これら両層間に配置された金属箔層と、を含む包装材において、
前記耐熱性樹脂層は、熱水収縮率が1.5%〜12%である耐熱性樹脂フィルムからなり、
前記耐熱性樹脂層と前記金属箔層とが外側接着剤層を介して接着され、
前記外側接着剤層は、ポリオールと、多官能イソシアネート化合物と、イソシアネート基と反応し得る官能基を1分子中に複数個有する脂肪族化合物と、を含むウレタン接着剤で形成されていることを特徴とする包装材。 - 前記ポリオールは、ポリエステルポリオールである請求項1に記載の包装材。
- 前記ポリエステルポリオールは、ジカルボン酸成分を含み、
前記ジカルボン酸成分は、芳香族ジカルボン酸を含有し、前記ジカルボン酸成分中の前記芳香族ジカルボン酸の含有率が40モル%〜80モル%である請求項2に記載の包装材。 - 前記脂肪族化合物は、多価アルコールである請求項1〜3のいずれか1項に記載の包装材。
- 前記外側接着剤層は、ウレタン結合、エステル結合、ウレア結合、アロファネート結合、ビュレット結合およびアミド結合からなる群より選ばれる少なくとも1種の結合を含む請求項1〜4のいずれか1項に記載の包装材。
- 前記耐熱性樹脂層と前記外側接着剤層との間に易接着層が配置されている請求項1〜5のいずれか1項に記載の包装材。
- 前記易接着層は、エポキシ樹脂、ウレタン樹脂、アクリル酸エステル樹脂、メタアクリル酸エステル樹脂及びポリエチレンイミン樹脂からなる群より選ばれる1種または2種以上の樹脂を含有する請求項6に記載の包装材。
- 前記ウレタン接着剤の硬化膜のヤング率が90MPa〜400MPaである請求項1〜7のいずれか1項に記載の包装材。
- 請求項1〜8のいずれか1項に記載の包装材の成形体からなるケース。
- 請求項1〜8のいずれか1項に記載の包装材を深絞り成形又は張り出し成形することを特徴とするケースの製造方法。
- 蓄電デバイス本体部と、
請求項1〜8のいずれか1項に記載の包装材及び/又は請求項9に記載のケースからなる外装部材とを備え、
前記蓄電デバイス本体部が、前記外装部材で外装されていることを特徴とする蓄電デバイス。 - 外側層としての耐熱性樹脂層と、内側層としての熱融着性樹脂層と、これら両層間に配置された金属箔層と、を含む積層物であって、前記耐熱性樹脂層は、熱水収縮率が1.5%〜12%である耐熱性樹脂フィルムからなり、前記熱融着性樹脂層と前記金属箔層とが、硬化型内側接着剤を介して接着され、前記耐熱性樹脂層と前記金属箔層とが、ポリオールと、多官能イソシアネート化合物と、イソシアネート基と反応し得る官能基を1分子中に複数個有する脂肪族化合物と、を含む硬化型外側接着剤を介して接着された積層物を準備する工程と、
前記積層物を37℃〜55℃の範囲の温度で加熱エージング処理を行うことによって前記硬化型内側接着剤および前記硬化型外側接着剤を硬化させるエージング処理工程と、を包含することを特徴とする包装材の製造方法。 - 前記硬化型内側接着剤が、熱硬化型アクリル接着剤である請求項12に記載の包装材の製造方法。
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TW105127723A TWI769986B (zh) | 2015-10-07 | 2016-08-29 | 包裝材、外殼及蓄電裝置 |
CN201610848293.8A CN106571432A (zh) | 2015-10-07 | 2016-09-23 | 包装材料、壳体及蓄电装置 |
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KR1020160124018A KR20170041631A (ko) | 2015-10-07 | 2016-09-27 | 포장재, 케이스 및 축전 디바이스 |
DE102016219364.3A DE102016219364A1 (de) | 2015-10-07 | 2016-10-06 | Verpackungsmaterial, Gehäuse und Energiespeichervorrichtung |
US15/287,882 US20170104189A1 (en) | 2015-10-07 | 2016-10-07 | Packaging material, case, and power storage device |
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US20170104189A1 (en) | 2017-04-13 |
CN115257084A (zh) | 2022-11-01 |
KR20170041631A (ko) | 2017-04-17 |
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