KR102003019B1 - 배리어 특성이 우수한 폴리프로필렌계 필름 및 이를 포함하는 셀 파우치 - Google Patents
배리어 특성이 우수한 폴리프로필렌계 필름 및 이를 포함하는 셀 파우치 Download PDFInfo
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Abstract
Description
도 2는 본 발명의 폴리프로필렌계 필름의 단면도이다.
| 비교예 1 | 실시예 1 | 실시예 2 | |
| Barrier 특성 (투습도 측정) |
10 g/m2·day | 7 g/m2·day | 8 g/m2·day |
| 비교예 1 | 실시예 1 | 실시예 2 | |
| 절연저항성 | △ | ◎ | ◎ |
20: 코어층
30: 제2 스킨층
Claims (13)
- 신디오택틱(syndiotactic) 폴리프로필렌 수지를 포함하는 코어층;
상기 코어층 하부에 형성되며 이소택틱(isotactic) 폴리프로필렌 수지를 포함하는 제1 스킨층; 및
상기 코어층 상부에 형성되며 이소택틱 폴리프로필렌 수지를 포함하는 제2 스킨층; 을 포함하고,
상기 코어층은 상기 코어층 100 중량부에 대하여, 상기 신디오택틱 폴리프로필렌 수지 40 내지 50 중량부를 포함하는 셀 파우치용 폴리프로필렌계 필름. - 제1항에 있어서,
상기 신디오택틱 폴리프로필렌 수지는 신디오택틱 폴리프로필렌 단독 중합체, 신디오택틱 폴리 프로필렌-에틸렌 블록 공중합체 및 신디오택틱 폴리 프로필렌-에틸렌 랜덤 공중합체로 이루어진 그룹에서 선택된 하나 이상을 포함하는 셀 파우치용 폴리프로필렌계 필름. - 제2항에 있어서,
상기 신디오택틱 폴리프로필렌 수지는 신디오택틱 폴리프로필렌 단독 중합체인 셀 파우치용 폴리프로필렌계 필름. - 제3항에 있어서,
상기 신디오택틱 폴리프로필렌 수지의 신디오택틱 분율(mm)은 95 내지 100%인 셀 파우치용 폴리프로필렌계 필름. - 제1항에 있어서,
상기 이소택틱 폴리프로필렌 수지는 이소택틱 폴리 프로필렌-에틸렌 랜덤 공중합체인 셀 파우치용 폴리프로필렌계 필름. - 제1항에 있어서,
상기 이소택틱 폴리프로필렌 수지는 130 내지 160 ℃범위의 융점(Tm)을 갖고 ASTM D1238에 따라 측정되었을 때 4 내지 9 (g/10min)의 융융지수(MI)를 보이는 셀 파우치용 폴리프로필렌계 필름. - 삭제
- 제1항에 있어서,
상기 제1 스킨층은 상기 제1 스킨층 100 중량부에 대하여 60 내지 90 중량부의 이소택틱 폴리프로필렌 수지를 포함하고,
상기 제2 스킨층은 상기 제2 스킨층 100 중량부에 대하여 80 내지 90 중량부의 이소택틱 폴리프로필렌 수지를 포함하는 셀 파우치용 폴리프로필렌계 필름. - 제1항에 있어서,
상기 제1 및 제2 스킨층은 각각 4 내지 8μm의 두께를 갖는 셀 파우치용 폴리프로필렌계 필름. - 제1항에 있어서,
상기 코어층은 24 내지 82 μm의 두께를 갖는 셀 파우치용 폴리프로필렌계 필름. - 제1항에 있어서,
상기 코어층은 블로킹 방지제, 슬립제 및 엘라스토머로 이루어진 첨가제를 더 포함하는 셀 파우치용 폴리프로필렌계 필름. - 제1항에 있어서,
상기 셀 파우치용 폴리프로필렌계 필름은 8g/m2·day 이하의 투습도를 보이는 셀 파우치용 폴리프로필렌계 필름. - 제1 항 내지 제6항 및 제8항 내지 제12항 중 어느 한 항에 따른 폴리프로필렌계 필름을 포함하는 셀 파우치.
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| KR1020170177527A KR102003019B1 (ko) | 2017-12-21 | 2017-12-21 | 배리어 특성이 우수한 폴리프로필렌계 필름 및 이를 포함하는 셀 파우치 |
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| KR1020170177527A KR102003019B1 (ko) | 2017-12-21 | 2017-12-21 | 배리어 특성이 우수한 폴리프로필렌계 필름 및 이를 포함하는 셀 파우치 |
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| KR102003019B1 true KR102003019B1 (ko) | 2019-07-24 |
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| KR102704427B1 (ko) * | 2020-11-24 | 2024-09-05 | 롯데케미칼 주식회사 | 접착 성능과 성형성이 우수한 셀 파우치용 프로필렌계 다층 필름 |
| KR102391814B1 (ko) * | 2021-02-26 | 2022-04-29 | 동우 화인켐 주식회사 | 이차전지용 파우치 필름 |
| KR20230068802A (ko) * | 2021-11-11 | 2023-05-18 | 롯데케미칼 주식회사 | 셀 파우치용 프로필렌계 다층 필름 |
| KR102985103B1 (ko) * | 2022-12-12 | 2026-06-30 | 주식회사 엘지에너지솔루션 | 이차 전지 팩 |
| WO2024181790A1 (ko) * | 2023-02-28 | 2024-09-06 | 주식회사 에스비티엘첨단소재 | 이차전지용 스테인레스 스틸 파우치 필름 |
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