| 发明名称 |
Multilayer Separator With Superior Permeability |
| 摘要 |
Provided are a multilayer separator capable of improving interlayer peel strength and exhibiting excellent permeability due to a high degree of alignment, and a method of manufacturing the same. The method of manufacturing a multilayer separator includes: manufacturing a precursor film by co-extruding and molding a polypropylene based resin melt having a melt index (2.16 kg, 230° C.) of 0.3 to 5 g/10 min and a polyethylene based resin melt having a melt index (2.16 kg, 190° C.) of 0.1 to 1.5 g/10 min so as to be alternately laminated; and heat-treating and stretching the manufactured film, wherein a melt index ratio (A/B) of the polypropylene based resin melt (A) and polyethylene based resin melt (B) is 2 to 10. |
| 申请公布号 |
US2015183195(A1) |
申请公布日期 |
2015.07.02 |
| 申请号 |
US201414580885 |
申请日期 |
2014.12.23 |
| 申请人 |
SK Innovation Co., Ltd. |
发明人 |
Jeon Min Ho;Jo Byoung Cheon;Cheong Sang Bae;Park Sang Hyun;Kan Tae Gyu |
| 分类号 |
B32B27/32;B29D99/00;B32B27/08;B29D7/01 |
主分类号 |
B32B27/32 |
| 代理机构 |
|
代理人 |
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| 主权项 |
1. A method of manufacturing a multilayer separator, the method comprising:
manufacturing a precursor film by co-extruding and molding a polypropylene based resin melt having a melt index (2.16 kg, 230° C.) of 0.3 to 5 g/10 min and a polyethylene based resin melt having a melt index (2.16 kg, 190° C.) of 0.1 to 1.5 g/10 min so as to be alternately laminated; and heat-treating and stretching the manufactured film, wherein a melt index ratio (A/B) of the polypropylene based resin melt (A) and polyethylene based resin melt (B) is 2 to 10. |
| 地址 |
Seoul KR |
