公开(公告)号：US20210046675A1

公开(公告)日：2021-02-18

申请号：US16956264

申请日：2019-04-19

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Charles W. Hedley ,  Donald A. Eckstein ,  Jay A. Esch ,  Christopher Kelton ,  Fredrick W. Vance

IPC: B29C33/38 ,  B33Y80/00 ,  B21D37/20

Abstract: Disclosed are methods related to making a stamped article and articles and assemblies made therefrom. The methods include providing a partial replica of the stamped article having opposed first and second major surfaces, and then coupling the partial replica to a walled enclosure to provide a mold assembly having upper and lower chambers separated from each other by the partial replica. Compositions can be hardened in the upper and lower chambers to provide upper and lower tools having a shape complemental to the first and second major surfaces. After removing the upper and lower tools from the mold assembly, a deformable sheet can be pressed between the upper and lower tools to form the stamped article.