Method for producing food product packages with modified environment packaging

摘要

There is disclosed a method for producing food product packages which produces packaging having the desirable characteristics of the conventional overwrap food tray with printed film and excellent storage and display characteristics achieved with modified environment packaging. The fresh food products suitable to be packaged by the method include fresh meat, particularly ground beef, fruits, and vegetables, particularly mushrooms. The method has an advantage of using generally conventional tray wrapping apparatus and generally conventional trays and involves the use of a flexible plastic wrap material preprinted and also perforated with microperforations of predetermined size and density to be permeable to air while inhibiting any flow of liquids from the package. This plastic wrap material is wrapped around trays by a tray wrapping machine so perforation patterns provide microperforation openings on top of the trays and on sides of the trays, 4 to 16 of which are then placed in an outer container from which the air is exhausted and replaced with a non-oxidizing gas. The tray container is sealed to complete the process.