Modified Atmosphere Packaging Machines (also known as MAP or ATM) are specialized systems designed to create packages with a controlled internal atmosphere by replacing the air with a calibrated mixture of gases (nitrogen, CO₂, oxygen, and sometimes argon). This process helps slow down oxidation, microbial growth, and sensory degradation, extending the product’s shelf life without compromising its taste, color, aroma, or nutritional value.
Thanks to these features, MAP packaging machines are ideal for the Food, Fresh food, and Pharmaceutical market, as well as for Technical applications involving semiconductors, circuit boards, and components such as microchips, as they prevent moisture accumulation.
Thanks to these features, MAP packaging machines are ideal for the food, pharmaceutical, and other industries where product quality and freshness are essential. IMBALSTOCK’s solutions combine precision, reliability, versatility, and easy integration into advanced production lines.
It’s a packaging technique that involves removing air (or part of it) from inside the package and introducing a selected gas mixture (e.g., nitrogen, CO₂, oxygen) to create a protective environment that slows down product degradation processes.
Two common approaches:
It is suitable for many perishable foods: meats, cured meats, cheeses, baked goods, pre-cut fruit/vegetables, ready meals, fish, and more. It can also be applied to sensitive non-food devices.
CO₂: inhibits the growth of bacteria and molds
N₂: inert gas that replaces oxygen
O₂: present in low percentages if needed to maintain color (e.g., red meat)
Argon: used in special cases
The optimal proportion depends on the product, its reactivity to gases, and the packaging film.
Vacuum removes almost all the air, but it can alter the product’s appearance and is not always suitable for every type. MAP offers greater aesthetic flexibility and allows for more accurate control of the gases inside the package.
With proper techniques, residual O₂ values below 1% can be achieved, optimized through compensated vacuum and gas dosing.
Yes: in these cases, a micro-perforated film can be used to allow controlled gas exchange (Equilibrium MAP, EMAP), adapting the atmosphere to the product’s respiratory needs.
