Goodbye Spoilage! Advanced MAP Packaging Technology

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Product Description:Introduction to Rotary Modified Atmosphere Packaging (MAP) Machines
A Rotary Modified Atmosphere Packaging (MAP) Machine is an automated solution designed for small-to-medium production scales and facilities with limited space. It is engineered to extend the shelf life of perishable products by replacing the air inside a container with a specific protective gas mixture (typically Carbon Dioxide, Nitrogen, and Oxygen) before sealing.
1. Working Principle: Rotary Indexing Cycle
Unlike linear machines that operate in a straight line, this machine uses a circular turntable (rotary) design:
Tray Loading: Pre-formed trays are placed into the molds (manually or automatically).
Indexing/Rotation: The turntable rotates to bring the trays to the MAP station.
Vacuum & Gas Flushing (Core Step): The sealing head lowers to create a hermetic chamber. It extracts the air (vacuum) and then injects a precise mixture of protective gases.
Heat Sealing: The lidding film is heat-sealed onto the tray rim.
Trimming & Ejection: The excess film is trimmed, and the finished package is ejected from the mold.
2. The Core of MAP Technology
The machine preserves food by modifying the internal atmosphere:
CO2 (Carbon Dioxide): Inhibits the growth of most aerobic bacteria and molds.
N2 (Nitrogen): An inert filler gas that prevents package collapse and maintains product shape.
O2 (Oxygen): Used for fresh red meat (to maintain color) or for fruits and vegetables (to allow respiration).
Benefit: Unlike standard vacuum packaging, MAP maintains the product's original texture, color, and shape without crushing it.
3. Key Features of the Rotary Design
Compact Footprint: The circular design saves significant floor space, making it ideal for supermarkets, laboratories, and small-to-medium processing plants.
High Gas Displacement: Premium machines can achieve a residual oxygen level of less than 1% and a gas displacement rate of over 99%.
Flexible Molds: Molds can be easily swapped to accommodate different tray shapes and sizes (rectangular, round, multi-compartment).
User-Friendly Interface: Usually equipped with a PLC touch screen to precisely control vacuum time, gas pressure, and sealing temperature.
High Hygiene Standards: Constructed from SUS304 stainless steel and anodized aluminum, meeting food safety requirements and allowing for easy cleaning.