| 摘要 |
A method and apparatus for enclosing a product in a tray having an outwardly extending flange is provided. A permeable web is secured to an inner periphery of flange and the secured portion is severed from the web to form a permeable lid. An impermeable web is then secured to an outer periphery of the flange and then severed from the web to form a peelable, impermeable lid. The outer periphery of the flange is protected from damage when the permeable lid is severed from the permeable web by elevating the permeable web above the outer periphery of the flange and severing the web at the elevated portion. If a fresh red meat product is to be packaged, the tray may be at least partially evacuated and then at least partially filled with a gas which is lower in oxygen content than air. Prior to retail sale, the impermeable lid may be removed to cause the packaged meat product to bloom to a red color. |
