Vacuum or modified atmosphere package for foods which tend to release liquids and/or gases

摘要

It is disclosed a vacuum or modified atmosphere package for food products which are susceptible to release liquids and/or gases, said package comprising 1) a tray (1) made of plastic material, having a bottom (3), and having sidewalls (5) terminating with a jutting edge, the tray comprising at least two layers, of which a layer facing inward of the tray consists of a sheet (7) of a substantially open-cells expanded thermoplastic material having holes (10) or slots on at least part of its upper surface, and a lower layer facing outward of said tray consists of a gas-barrier composite film (9); the tray further having a peripheral frame (11) made of plastic material and having barrier properties with respect to the diffusion of gases, the peripheral frame (11) being coupled to the tray edge (6) all around the perimeter thereof and having substantially listel-like sides with an angular cross-section comprising two flanges (12,13) of which a first flange juts out as a prolongation of the tray edge and a second flange engages the tray edge from beneath; 2) a food product (4) susceptible of releasing liquids and/or gases placed onto the bottom of said tray; and 3) a cover (2) for said tray consisting of a gas-barrier composite film which adheres onto the first flange of the peripheral frame and, optionally, onto the tray edge so as to maintain a vacuum or a modified atmosphere within the package.