Patent 7648669 was granted and assigned to Bemis Manufacturing Company on January, 2010 by the United States Patent and Trademark Office.
A method of injection molding at least one part in a single mold having therein at least one cavity, the method comprising providing first and second injection molding devices, using the first injection molding device to inject material into the single mold, and thereafter using the second injection molding device to inject material into the single mold.