JP6770583B2 - 電池用粘着テープ - Google Patents
電池用粘着テープ Download PDFInfo
- Publication number
- JP6770583B2 JP6770583B2 JP2018552290A JP2018552290A JP6770583B2 JP 6770583 B2 JP6770583 B2 JP 6770583B2 JP 2018552290 A JP2018552290 A JP 2018552290A JP 2018552290 A JP2018552290 A JP 2018552290A JP 6770583 B2 JP6770583 B2 JP 6770583B2
- Authority
- JP
- Japan
- Prior art keywords
- adhesive tape
- adhesive
- release agent
- battery
- base material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002390 adhesive tape Substances 0.000 title claims description 88
- 239000003795 chemical substances by application Substances 0.000 claims description 56
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- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 40
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- 239000000853 adhesive Substances 0.000 claims description 24
- 230000001070 adhesive effect Effects 0.000 claims description 24
- 125000000217 alkyl group Chemical group 0.000 claims description 23
- 239000013032 Hydrocarbon resin Substances 0.000 claims description 19
- 229920006270 hydrocarbon resin Polymers 0.000 claims description 19
- 239000012790 adhesive layer Substances 0.000 claims description 18
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- 125000002723 alicyclic group Chemical group 0.000 description 5
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- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 2
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
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- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/40—Adhesives in the form of films or foils characterised by release liners
- C09J7/401—Adhesives in the form of films or foils characterised by release liners characterised by the release coating composition
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J109/00—Adhesives based on homopolymers or copolymers of conjugated diene hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J121/00—Adhesives based on unspecified rubbers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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Description
本発明の粘着テープの基材の種類は特に限定されず、粘着テープに使用できることが知られる各種の基材を使用できる。特に、プラスチックフィルムが好ましい。具体例としては、ポリエチレンフィルム、ポリプロピレンフィルム等のポリオレフィンフィルム、ポリエチレンテレフタレートフィルム、ポリブチレンテレフタレートフィルム、ポリフェニレンサルファイドフィルム、ポリイミドフィルム、ポリアミドフィルムが挙げられる。また必要に応じて、基材にコロナ処理、プラズマ処理、火炎処理、アンカー剤処理等の処理を施しても良い。中でも、電池用途に適した耐熱性や耐薬品性を有する点からポリオレフィンフィルム、ポリイミドフィルムが好ましい。
本発明の粘着テープの基材の一面(粘着剤層が設けられた面とは反対側の面)には、離型剤が塗布されている。離型剤の種類は特に限定されず、公知の各種離型剤を使用できる。離型剤としては、長鎖アルキル系、シリコーン系離型剤が好ましく、特に長鎖アルキル系が好ましい。
本発明の粘着テープの粘着剤層を構成する粘着剤としては、例えば、ゴム系粘着剤、アクリル系粘着剤、シリコーン系粘着剤を使用できる。これらは単独で、又は2種以上を混合して使用してもよい。
本発明の粘着テープは、基材と、基材の一方の面に設けられた粘着剤層を有する。そして、基材の粘着剤層が設けられた面とは反対側の面に離型剤が塗布されており、離型剤が塗布された面のJIS K7125に準じた静摩擦係数及び動摩擦係数の最大値が0.6以下である。
粘着テープ(1)の離型剤が塗布された面に対して同じ粘着テープ(2)の粘着剤層側を貼り合わせ、23℃で20時間エージングし、その後剥離する。そして、粘着テープ(2)のJIS Z 0237:2000に準じた対SUS板粘着力(a)とエージングせずに剥離した場合の粘着テープ(2)の対SUS粘着力(b)を測定し、以下の式により残留接着率を算出する。
残留接着率(%)=(a/b)×100%
基材として使用する厚さ20μmの2軸延伸ポリプロピレンフィルム[東レ(株)製、トレファン(登録商標)](OPPフィルム、離型剤塗布前)の静摩擦係数及び動摩擦係数の最大値を以下の方法で測定したところ、その最大値は0.43であった。
JIS K7125に準じて静摩擦係数及び動摩擦係数の最大値を測定した。具体的には、摩擦係数測定機((株)東洋精機製作所社製)を用い、滑り片の重さ200g、接触面積6.3cm×6.3cm、引張速度100mm/分の条件で静摩擦係数及び動摩擦係数を測定し、その中で最も高い値を「最大値」とした。
離型剤としてシリコーン系離型剤(信越化学株式会社製、KS-847T)を使用し、ドライ塗布量が表2記載の量になるように塗布したこと以外は、実施例1〜6と同様にしてゴム系粘着テープ及びアクリル系粘着テープを作製した。
基材として厚さ25μmのポリイミドフィルム[東レ・デュポン(株)製、カプトン(登録商標)100H](PIフィルム、摩擦係数の最大値=1.45)を使用し、離型剤である長鎖アルキル系離型剤をドライ塗布量が表3記載の量になるように塗布したこと以外は、実施例1〜6と同様にしてゴム系粘着テープ及びアクリル系粘着テープを作製した。
離型剤としてシリコーン系離型剤(信越化学株式会社製、KS-847T)を使用し、ドライ塗布量が表4記載の量になるように塗布したこと以外は、実施例9〜10と同様にしてゴム系粘着テープ及びアクリル系粘着テープを作製した。
基材として厚さ25μmのポリエチレンテレフタレートフィルム[東レ(株)製、ルミラー(登録商標)](PETフィルム、摩擦係数の最大値=0.81)を使用し、離型剤である長鎖アルキル系離型剤をドライ塗布量が表5記載の量になるように塗布したこと以外は、実施例1〜6と同様にしてゴム系粘着テープ及びアクリル系粘着テープを作製した。
粘着テープ(1)の離型剤が塗布された面に対して同じ粘着テープ(2)の粘着剤層側を貼り合わせ、23℃で20時間エージングし、その後剥離した。そしてJIS Z 0237:2000に準じて、粘着テープ(2)の対SUS板粘着力(a)とエージングせずに剥離した場合の粘着テープ(2)の対SUS粘着力(b)を測定し、以下の式により残留接着率を算出した。
残留接着率(%)=(a/b)×100%
小型二次電池用の巻き回された電極群を粘着テープで巻き止めし、これを電池ケースに挿入する際の挿入性を、以下の基準で評価した。
「○」:スムーズに挿入できた。
「△」:ややスムーズに挿入できた。
「×」:スムーズには挿入できなかった。
表1〜5に示すように、実施例1〜17の粘着テープは電池部品挿入性に優れていた。一方、比較例1〜4の粘着テープは電池部品挿入性が劣っていた。
Claims (11)
- 基材と、該基材の一方の面に設けられた粘着剤層を有する電池用粘着テープであって、該基材の該粘着剤層が設けられた面とは反対側の面に離型剤が塗布されており、該離型剤が塗布された面のJIS K 7125:1999に準じた静摩擦係数及び動摩擦係数の最大値が0.6以下であり、該離型剤が長鎖アルキル系離型剤又はシリコーン系離型剤であり、該シリコーン系離型剤のドライ塗布量が0.1〜0.25g/m 2 であることを特徴とする電池用粘着テープ。
- 長鎖アルキル系離型剤のドライ塗布量が0.001〜0.5g/m2である請求項1記載の電池用粘着テープ。
- 粘着剤層を構成する粘着剤組成物が、ゴム系粘着剤、アクリル系粘着剤又はシリコーン系粘着剤を含有する請求項1記載の電池用粘着テープ
- ゴム系粘着剤のゴム成分が、ポリイソブチレンゴム及び/又はブチルゴムである請求項3記載の電池用粘着テープ。
- 粘着剤組成物が、ゴム系粘着剤と飽和炭化水素樹脂を含む請求項3記載の電池用粘着テープ。
- 飽和炭化水素樹脂が、水添石油樹脂である請求項5記載の電池用粘着テープ。
- 粘着剤層の厚さが、1〜50μmである請求項1記載の電池用粘着テープ。
- 基材が、プラスチックフィルムである請求項1記載の電池用粘着テープ。
- 基材の厚さが、4〜200μmである請求項1記載の電池用粘着テープ。
- 粘着剤層が、基材両側端縁部から0.5mm以上内側に積層されている請求項1記載の電池用粘着テープ。
- 以下の方法で測定される残留接着率が70〜150%である請求項1記載の電池用粘着テープ。
(残留接着率)
粘着テープ(1)の離型剤が塗布された面に対して同じ粘着テープ(2)の粘着剤層側を貼り合わせ、23℃で20時間エージングし、その後剥離する。そして、粘着テープ(2)のJIS Z 0237:2000に準じた対SUS板粘着力(a)とエージングせずに剥離した場合の粘着テープ(2)の対SUS粘着力(b)を測定し、以下の式により残留接着率を算出する。
残留接着率(%)=(a/b)×100%
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2016/084599 WO2018096581A1 (ja) | 2016-11-22 | 2016-11-22 | 電池用粘着テープ |
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JPWO2018096581A1 JPWO2018096581A1 (ja) | 2019-10-17 |
JP6770583B2 true JP6770583B2 (ja) | 2020-10-14 |
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CN107851769B (zh) * | 2015-08-31 | 2021-06-18 | 松下知识产权经营株式会社 | 非水电解质二次电池 |
KR102422216B1 (ko) * | 2017-05-23 | 2022-07-18 | 가부시키가이샤 데라오카 세이사쿠쇼 | 점착 테이프 |
JP7043361B2 (ja) * | 2018-07-10 | 2022-03-29 | 日東電工株式会社 | 2次電池用ガス吸着シート |
WO2021171838A1 (ja) * | 2020-02-28 | 2021-09-02 | 日東電工株式会社 | 粘着剤層付フィルム |
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JPH01304172A (ja) * | 1988-05-31 | 1989-12-07 | Nitto Denko Corp | 電池用粘着テープ |
JPH07132961A (ja) * | 1993-11-04 | 1995-05-23 | Nitto Denko Corp | セパレータもしくは包装用材料 |
JP3473929B2 (ja) | 1995-12-15 | 2003-12-08 | 株式会社寺岡製作所 | リチウムイオン電池用粘着テープ |
JPH11273708A (ja) * | 1998-03-24 | 1999-10-08 | Sony Corp | 巻回電極電池 |
US6604307B1 (en) * | 2000-04-12 | 2003-08-12 | Sonoco Development, Inc. | Removable film label for composite containers |
CN201397858Y (zh) * | 2009-03-26 | 2010-02-03 | 天津力神电池股份有限公司 | 一种防止溢胶的新型方形锂离子电池 |
JP5680371B2 (ja) * | 2010-10-29 | 2015-03-04 | 日東電工株式会社 | 電池用粘着テープ |
JP5982131B2 (ja) | 2011-02-28 | 2016-08-31 | 日東電工株式会社 | 電池用粘着テープ、及び該粘着テープを使用した電池 |
JP2013064086A (ja) * | 2011-09-20 | 2013-04-11 | Nitto Denko Corp | 電池用粘着テープ |
US20140226085A1 (en) * | 2013-02-14 | 2014-08-14 | Nitto Denko Corporation | Pressure-sensitive adhesive composition, pressure-sensitive adhesive layer, pressure-sensitive adhesive sheet, optical component and touch panel |
CN104073179B (zh) * | 2013-03-29 | 2019-05-07 | 日东电工(上海松江)有限公司 | 电化学装置用粘合带 |
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US20200040226A1 (en) | 2020-02-06 |
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