A package for storing oxygen sensitive goods includes a first web in the form of a tray which may include flanges, a valve or valves, carbon dioxide, a good or goods, such as red meat or other oxygen sensitive food and non-food products and a second web sealed to the tray in the form of a gas impermeable...http://www.google.es/patents/US6023915?utm_source=gb-gplus-sharePatente US6023915 - Modified atmosphere packaging method
