KR102463992B1 - 중합체 필름 및 그로부터 생산된 패키지 - Google Patents
중합체 필름 및 그로부터 생산된 패키지 Download PDFInfo
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- KR102463992B1 KR102463992B1 KR1020197017912A KR20197017912A KR102463992B1 KR 102463992 B1 KR102463992 B1 KR 102463992B1 KR 1020197017912 A KR1020197017912 A KR 1020197017912A KR 20197017912 A KR20197017912 A KR 20197017912A KR 102463992 B1 KR102463992 B1 KR 102463992B1
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- South Korea
- Prior art keywords
- layer
- heat
- multilayer film
- polyethylene
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Abstract
Description
도 2는 기재에 열 밀봉된, 도 1의 필름을 통한 단면을 나타낸다.
도 3은 박리된 후의 도 2의 열 밀봉을 나타낸다.
폴리에틸렌/폴리부틸렌 | MFI (g/10분) |
밀봉 온도 (℃) |
박리 강도 (N/15 mm) |
65/35 | 35 | 110 | 2.8 |
160 | 3.0 | ||
95 | 110 | 3.1 | |
160 | 2.8 | ||
90/10 | 35 | 110 | 2.9 |
160 | 3.2 | ||
95 | 110 | 3.2 | |
160 | 3.0 |
a. 지지체 층
b. 폴리에틸렌 열 밀봉 층
c. 중간 박리성 층
B. 기재
1. 열 밀봉 바
2. 열 밀봉 영역
3. 밀봉 층 파열
4. 응집적으로 분열 가능한 중간 박리성 층
Claims (18)
- 열 밀봉성(heat-sealable) 다층 필름(A)으로서,
(a) 적어도 하나의 중합체 층을 포함하는 지지체 층;
(b) 70중량% 이상의 저밀도 폴리에틸렌을 포함하는 폴리에틸렌 열 밀봉 층으로서, 상기 폴리에틸렌은 2.16kg의 하중으로 190℃에서 ASTM D1238에 따라 측정된 용융 유동 지수가 2 내지 110g/10분인 폴리에틸렌 열 밀봉 층; 및
(c) 상기 지지체 층(a) 및 상기 폴리에틸렌 열 밀봉 층(b)과 접합하는 중간 박리성 층으로서, 상기 중간 박리성 층(c)은 75 내지 95중량%의 폴리에틸렌 및 5 내지 25중량%의 폴리프로필렌, 폴리부틸렌, 폴리스티렌(PS), 폴리에틸렌 테레프탈레이트 글리콜 공중합체(PETG), 스티렌 부타디엔 스티렌 공중합체(SBS), 사이클릭 올레핀 공중합체(COC), 폴리메틸 메타크릴레이트(PMMA), 스티렌 메틸 메타크릴레이트, 아크릴로니트릴 부타디엔 스티렌(ABS), 및 탈크로 이루어진 군으로부터 선택된 하나 이상의 물질을 포함하며, 상기 중간 박리성 층(c)은 상기 지지체 층(a) 또는 상기 열 밀봉 층(b) 중 어느 하나에 대한 결합 강도보다 작고, 그리고 상기 지지체 층(a) 또는 상기 열 밀봉 층(b) 중 어느 하나의 내부 응집 강도보다 작은 내부 응집 강도를 갖는 중간 박리성 층;
을 포함하고,
상기에서,
- 상기 지지체 층(a)은 상기 다층 필름의 70 내지 94중량%를 구성하고;
- 상기 폴리에틸렌 열 밀봉 층(b)은 상기 다층 필름의 3 내지 15중량%를 구성하고; 그리고
- 상기 중간 박리성 층(c)은 상기 다층 필름의 3 내지 15중량%를 구성하고;
상기 (a), (b), (c)의 총 중량%는 100인 것을 특징으로 하는 열 밀봉성 다층 필름(A).
- 제1항에 있어서, 상기 지지체 층(a)의 적어도 하나의 중합체가 폴리아미드, 폴리에스테르, 폴리카보네이트, 폴리비닐 클로라이드, 폴리프로필렌, 저밀도 폴리에틸렌, 고밀도 폴리에틸렌, 폴리에스테르-글리콜 공중합체, 에틸렌 비닐 아세테이트, 에틸렌 아크릴레이트 이오노머, 에틸렌 아크릴레이트 3량체, 및 스티렌-부타디엔 공중합체로 이루어진 군으로부터 선택되는 것을 특징으로 하는 열 밀봉성 다층 필름(A).
- 제1항에 있어서, 상기 지지체 층(a)이 하기를 포함하는 다층인 것을 특징으로 하는 열 밀봉성 다층 필름(A):
- 폴리프로필렌의 층 및 폴리에틸렌 테레프탈레이트의 층; 또는
- 저밀도 폴리에틸렌 및 나일론 6의 층; 또는
- 에틸렌 비닐아세테이트 공중합체의 층, 에틸렌 아크릴레이트 이오노머의 층, 및 에틸렌 비닐아세테이트 공중합체의 층; 또는
- 고밀도 폴리에틸렌의 층 및 저밀도 폴리에틸렌의 층; 또는
- 폴리에틸렌 테레프탈레이트의 층 및 저밀도 폴리에틸렌의 층.
- 제1항에 있어서, 상기 폴리에틸렌 열 밀봉 층(b)이 상기 층(b)을 취화시키는 첨가제를 실질적으로 함유하지 않는 것을 특징으로 하는 열 밀봉성 다층 필름(A).
- 제1항에 있어서,
- 상기 중간 박리성 층(c)의 폴리에틸렌이 적어도 80중량%의 중합된 에틸렌을 포함하고; 그리고
- 상기 중간 박리성 층(c)의 폴리프로필렌 또는 폴리부틸렌이 5중량% 이하의 공중합된 에틸렌 함량을 포함하는 것을 특징으로 하는 열 밀봉성 다층 필름(A).
- 제1항에 있어서, 상기 중간 박리성 층(c)의 두께가 2 내지 20㎛인 것을 특징으로 하는 열 밀봉성 다층 필름(A).
- 제1항에 있어서, 상기 열 밀봉 층(b)의 두께가 2 내지 20㎛인 것을 특징으로 하는 열 밀봉성 다층 필름(A).
- 제1항에 있어서, 상기 열 밀봉 층(b)에 사용된 중합체가 ASTM D638에 따라, 기계 방향으로 500% 미만의 파단(break)시 신율(elongation)을 갖는 것을 특징으로 하는 열 밀봉성 다층 필름(A).
- 제1항에 있어서, 상기 열 밀봉 층(b)에 사용된 중합체가 ASTM D638-14에 따라, 기계 방향으로 13MPa 미만의 파단시 인장 강도를 갖는 것을 특징으로 하는 열 밀봉성 다층 필름(A).
- 제1항에 따른 열 밀봉성 다층 필름(A) 및 열 밀봉 층(b)과 접합된 기재(B)를 포함하는 열 밀봉된 패키지로서, 상기 기재(B)가 추가의 중합체 필름, 코팅된 종이, 비코팅된 종이, 판지, 금속 호일, 셀룰로오스 부직포, 중합체성 부직포 및 직포로 이루어진 군으로부터 선택되는 것을 특징으로 하는 열 밀봉된 패키지.
- 제10항에 있어서, 상기 기재(B)가 폴리에틸렌, 폴리아미드, 폴리에스테르, 폴리카보네이트, 폴리비닐 클로라이드, 에틸렌 비닐 아세테이트, 및 고충격 폴리스티렌으로 이루어진 군으로부터 선택된 추가의 중합체 필름인 것을 특징으로 하는 열 밀봉된 패키지.
- 제10항에 있어서, ASTM F88에 따라 측정된 박리 강도가 2.0 내지 6.0N/15mm이고, 파열이 상기 중간 박리성 층(c) 내부에 존재하는 것을 특징으로 하는 열 밀봉된 패키지.
- 제10항에 따른 열 밀봉된 패키지의 제조 방법으로서,
상기 기재(B)를 제1항의 상기 열 밀봉성 다층 필름(A)의 상기 열 밀봉 층(b)과 접합시키는 단계;
0.2 내지 3초의 체류 시간 및 100 내지 600kPa의 압력을 사용하여 100 내지 180℃의 온도에서 밀봉하는 단계; 및
상기 열 밀봉된 패키지를 냉각시키는 단계;
를 포함하는 것을 특징으로 하는 열 밀봉된 패키지의 제조 방법.
- 제13항에 있어서, 상기 방법은, 상기 기재와 접합시키기 전에, 상기 열 밀봉 층(b)에 플라즈마 처리를 수행하는 추가 단계를 포함하는 것을 특징으로 하는 방법.
- 제14항에 있어서, 상기 플라즈마 처리는 코로나-플라즈마 처리를 포함하는 것을 특징으로 하는 방법.
- 제1항에 있어서, 상기 용융 유동 지수는 8 내지 100g/10분인 것을 특징으로 하는 열 밀봉성 다층 필름.
- 제1항에 있어서, 상기 지지체 층은 상기 다층 필름의 80 내지 90중량%를 구성하는 것을 특징으로 하는 열 밀봉성 다층 필름.
- 제1항에 있어서, 상기 폴리에틸렌 열 밀봉 층 및 중간 박리성 층은 상기 다층 필름의 각각 5 내지 10중량%를 구성하는 것을 특징으로 하는 열 밀봉성 다층 필름.
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- 2016-12-16 EP EP16204810.2A patent/EP3335872A1/en not_active Withdrawn
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2017
- 2017-12-11 KR KR1020197017912A patent/KR102463992B1/ko active Active
- 2017-12-11 ES ES17821515T patent/ES2836503T3/es active Active
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WO2018108776A1 (en) | 2018-06-21 |
EP3554825A1 (en) | 2019-10-23 |
JP2020501955A (ja) | 2020-01-23 |
CN110352128A (zh) | 2019-10-18 |
US11820110B2 (en) | 2023-11-21 |
KR20190098148A (ko) | 2019-08-21 |
EP3554825B1 (en) | 2020-10-21 |
CA3047256A1 (en) | 2018-06-21 |
ES2836503T3 (es) | 2021-06-25 |
BR112019012413A2 (pt) | 2020-02-27 |
BR112019012413B1 (pt) | 2022-11-22 |
MY193848A (en) | 2022-10-28 |
EP3335872A1 (en) | 2018-06-20 |
JP7094978B2 (ja) | 2022-07-04 |
US20190366694A1 (en) | 2019-12-05 |
CN110352128B (zh) | 2021-10-29 |
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