| 发明名称 |
Profiled extrusion replication |
| 摘要 |
A profiled extrusion replication process is disclosed that includes steps of (a) extruding a molten material through an extrusion die having at least one profiled die lip to form a molten extrudate having first and second major extrudate surfaces and having a first structural feature in the first major extrudate surface; (b) bringing the molten extrudate into contact with a tool surface comprising one or more second structural features so as to cause a portion of the first structural feature in the first major extrudate surface to contact the one or more second structural features on the tool surface; and (c) cooling the molten extrudate to provide the structured film. Structured films and apparatus for making structured films are also disclosed. |
| 申请公布号 |
US9108349(B2) |
申请公布日期 |
2015.08.18 |
| 申请号 |
US201113636278 |
申请日期 |
2011.03.21 |
| 申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
Clarke Graham M.;Eull Patricia A.;Peterson Kenneth A.;Slama David F.;Olsen Lee E. |
| 分类号 |
B29C47/14;B29C43/22;B29C43/24;B29C47/00;B29C47/32;B29C43/46;B29L7/00 |
主分类号 |
B29C47/14 |
| 代理机构 |
|
代理人 |
Allen Gregory D. |
| 主权项 |
1. A process for making a structured film, comprising steps of:
(a) extruding a molten material through an extrusion die having at least one profiled die lip to form a molten extrudate having first and second major extrudate surfaces and having a first structural feature in the first major extrudate surface; (b) bringing the molten extrudate into contact with a tool surface comprising one or more second structural features so as to cause a portion of the first structural feature in the first major extrudate surface to contact at least one of the second structural features on the tool surface; and (c) cooling the molten extrudate to provide the structured film; wherein a ratio of a cross-web cross-sectional area of the first structural feature to a cross-web cross-sectional area of a second structural feature is about 1.0. |
| 地址 |
Saint Paul MN US |
