Packaging machines are vital for meat's safety, shelf life, and presentation. Vacuum packaging is the standard for bulk or frozen products like primal cuts and ground meat, removing oxygen to prevent oxidation and freezer burn. For high-quality retail cuts, Modified Atmosphere Packaging (MAP) is key. Machines flush trays with a gas mix (high in oxygen to maintain color) before sealing, extending chilled shelf life. Stretch film packaging is common for trays in self-service displays, providing a tight, clear cling. Skin packaging offers superior presentation for premium cuts, tightly molding film to the product's contours on a board, locking in juices and preventing purge loss. Pre-made pouch machines are efficient for marinated or value-added meats, automating the filling and sealing of pre-formed pouches.

The focus is on preserving extreme freshness, preventing dehydration, and withstanding moist, cold conditions. Vacuum packaging is extensively used for fillets and shellfish, compressing the product to prevent ice crystals (freezer burn) during frozen storage and locking in moisture. MAP is critical for delicate whole fish or chilled products. By replacing air with a high-carbon dioxide mix in a rigid tray, it inhibits bacteria and extends freshness. Skin packaging is excellent for fragile items like smoked salmon fillets, providing a second-skin fit that minimizes physical damage and product movement. Stretch film is used for overwrapping trays of fresh fish in markets. Pre-made pouch machines handle irregularly shaped items like whole lobsters or crab clusters effectively.

Packaging must manage respiration, protect from physical damage, and control moisture. MAP is dominant for fresh-cut, ready-to-eat produce. Machines precisely create a low-oxygen, high-nitrogen atmosphere in sealed trays or bags to slow ripening and microbial growth. Stretch film overwraps trays of whole fruits or vegetables for retail. Skin packaging secures delicate berries or herbs on pulp trays, preventing crushing. While less common for fresh produce due to compression, vacuum packaging is used for certain bulk frozen vegetables like spinach. Pre-made pouch machines are suitable for dried fruits, nuts, or frozen vegetable blends, offering fast, automated packaging.