Patent 7736713 was granted and assigned to Plastipak on June, 2010 by the United States Patent and Trademark Office.
A method for printing digital images on plastic containers having curved surfaces, including providing a series of hollow plastic containers, moving the containers along a track past first and second digital printing locations, and printing first and second digital images on the curved container surfaces while maintaining the container being printed under internal pressure and while firmly holding the container being printed at spaced locations thereon.