What's New: Creo Parametric 4.0 > Sheetmetal Design > Flange Is Improved in Sheetmetal Design
  
Flange Is Improved in Sheetmetal Design
Edge treatment is improved when defining a Flange feature.
User Interface Location: With a sheet metal part open, click Model > Flange, then click the Edge Treatment tab.
Release: Creo Parametric 4.0
Benefits and Description
You can watch a video that demonstrates this capability.
When defining multiple flanges connected to each other, the options on the Edge Treatment tab provide an additional check box for the edge treatment type Open, to close the corner completely. Similar to the Flange feature, you can control the edge treatment of the Edge Rip feature and the Conversion feature from the Placement tab.