This video tutorial goes through the steps in exporting 3d models from Rhino into Blender. This process retains the objects materials and mapping. The key steps in this process can be found below:
00:00 - Introduction
00:06 - Rhino model and material setup
00:41 - Exporting the model as an OBJ
01:00 - OBJ export options
02:09 - Importing into Blender
03:00 - Creating new object collections by their material