基本信息:
- 专利标题： ORIENTED POLYETHYLENE FILMS AND ARTICLES COMPRISING THE SAME
- 申请号：US17906227 申请日：2021-03-25
- 公开(公告)号：US20230118316A1 公开(公告)日：2023-04-20
- 发明人： Jian Wang , Karlheinz Hausmann , Sanjib Biswas , Brayden E. Glad , Douglas S. Ginger , Justice Alaboson , Ronald Wevers
- 申请人： Dow Global Technologies LLC
- 申请人地址： US MI Midland
- 专利权人： Dow Global Technologies LLC
- 当前专利权人： Dow Global Technologies LLC
- 当前专利权人地址： US MI Midland
- 国际申请： PCT/US2021/024140 WO 20210325
- 主分类号： B32B27/08
- IPC分类号： B32B27/08 ; B32B27/32 ; B32B27/34 ; C08L23/06 ; B32B15/085 ; B32B27/18 ; B32B27/30 ; B32B7/03 ; B32B38/18
摘要：
The present invention relates to oriented, multilayer polyethylene films. In one aspect, a biaxially oriented, multilayer polyethylene film comprises at least one layer comprising: (1) a polyethylene-based composition that comprises: (a) at least 97% by weight, based on the total weight of the polyethylene-based composition, of a polyethylene composition comprising: (i) from 25 to 37 percent by weight of a first polyethylene fraction having a density in the range of 0.935 to 0.947 g/cm3 and a melt index (I2) of less than 0.1 g/10 minutes; and (ii) from 63 to 75 percent by weight of a second polyethylene fraction; wherein the polyethylene composition has less than 0.10 branches per 1,000 carbon atoms when measured using 13C NMR, wherein the density of the polyethylene-based composition is at least 0.965 g/cm3, and wherein the melt index (I2) of the polyethylene-based composition is 0.5 to 10 g/10 minutes.
IPC结构图谱:
| B | 作业；运输 |
| --B32 | 层状产品 |
| ----B32B | 层状产品，即由扁平的或非扁平的薄层，例如泡沫状的、蜂窝状的薄层构成的产品 |
| ------B32B27/00 | 实质上由合成树脂组成的层状产品 |
| --------B32B27/06 | .作为薄层的主要或惟一的成分，它与另一层由一种特定物质构成的薄层相贴 |
| ----------B32B27/08 | ..不同种类合成树脂的 |