US Patent:
20070160823, Jul 12, 2007
Inventors:
Matthew Pyzik - Howell MI, US
John Pacella - Rochester Hills MI, US
Terry Hopkins - Southfield MI, US
International Classification:
B32B 3/26
B29C 33/40
B29C 41/20
US Classification:
428304400, 264219000, 264259000, 264279000, 264279100, 264162000
Abstract:
A three dimensional structure having finished surfaces defined by electronic data includes a core of expanded polypropylene foam having at least one surface offset from one of the finished surfaces of the three dimensional structure and a layer of hardened paste bonded to the offset surface of the core of expanded polypropylene foam. The hardened paste is machined to define the finished surfaces of the three dimensional structure.