MAP stands for Modified Atmosphere Packaging. It is a food-packaging technology that adjusts the proportions of oxygen, carbon dioxide and nitrogen inside a sealed package.
MAP paperboard packaging combines this controlled atmosphere with a high-barrier paper tray and compatible lidding film. The system is designed to help slow oxidation, moisture loss, discoloration and other quality changes during refrigerated storage and distribution.
Unlike conventional plastic MAP trays, paperboard MAP packaging uses paperboard as its main structural material. A thin functional liner provides the necessary resistance to moisture, grease and gas transmission.
This structure can significantly reduce the use of petroleum-based plastic while maintaining the stiffness, barrier performance and sealing functionality required for many food applications.
The performance of a MAP pack depends on the complete packaging system—not on one material alone.
After food is filled into the paper tray, a MAP sealing machine removes part of the air and introduces a selected mixture of protective gases. The optimum gas ratio depends on the type of food, its respiration rate, target shelf life and storage conditions.
The tray liner helps manage oxygen, moisture and gas transmission. The top film must also be matched to the tray’s sealing layer and may include high-barrier, anti-fog, easy-peel or heat-resistant properties.
Reliable sealing and temperature control are equally important. The tray, liner, lidding film, gas mixture, sealing machine, food process and cold chain must therefore be evaluated as one integrated system.
In MAP paperboard packaging, paperboard provides most of the structural strength. Plastic is used only where it is technically necessary for barrier protection, grease resistance, moisture resistance and heat sealing.
Compared with conventional all-plastic MAP trays, this structure can substantially reduce plastic consumption. In certain properly designed and verified applications, plastic use may be reduced by 85% or more.
The actual reduction depends on tray dimensions, paperboard weight, liner structure and the plastic package used as the comparison baseline.
Using less plastic can help food brands reduce their reliance on petroleum-based materials and respond to the growing demand for lower-plastic packaging.
MAP paper trays can be combined with high-barrier materials such as EVOH, anti-fog lidding films and stable heat-sealing structures.
A properly validated packaging system may help:
Slow oxidation and color changes;
Reduce moisture loss;
Maintain food appearance, texture and flavor;
Support refrigerated distribution over longer distances;
Reduce food waste during transportation and retail;
Improve product presentation on the shelf.
Shelf life should not be determined by the packaging material alone. It must be verified through testing that considers the food formulation, initial microbial load, gas mixture, residual oxygen, seal integrity, storage temperature and cold-chain conditions.
Although paperboard is the main material, MAP paper trays normally require a thin functional liner to provide moisture, grease, gas-barrier and sealing performance.
To address the challenges of mixed-material packaging, MOLIN can provide a paper–plastic separation design. After use, the consumer can remove the lidding film and separate the functional liner from the paperboard tray.
The paperboard and plastic components can then be placed into the appropriate waste streams according to local recycling instructions.
This separable structure helps create clearer material streams and can improve the recovery potential of the paper fibers. Any recyclability or “100% recyclable” claim should be supported by the actual material structure, relevant testing and the recycling infrastructure available in the target market.
Paper-based packaging naturally communicates freshness, quality and environmental responsibility.
The outer and inner surfaces of the tray can be designed for high-quality printing, while the lidding film and label can carry additional brand information, preparation instructions and sustainability messages.
Compared with common black or transparent plastic trays, MAP paperboard packaging can create stronger visual differentiation on the retail shelf.
It can help brands communicate:
Plastic-reduction initiatives;
Sustainable packaging commitments;
Natural, healthy and fresh product positioning;
Premium food quality;
Product and packaging innovation;
Clear disposal and recycling instructions.
MAP paperboard packaging is therefore more than a food container—it can also become an important brand-communication platform.
Fresh salads, cut vegetables and ready-to-eat foods require careful management of moisture, gas exchange and condensation.
MAP paper trays combined with transparent anti-fog lidding film can help maintain product visibility while supporting the required atmosphere inside the package.
Typical applications include:
Leafy salads;
Pasta salads;
Grain bowls;
Prepared vegetables;
Cut fruit;
Healthy meal combinations.
Chinese and Western ready meals may pass through filling, sealing, refrigeration, transportation and reheating before consumption.
Their packaging must resist oil and moisture while remaining compatible with the intended heating method.
MAP paperboard trays can be developed for:
Rice meals;
Pasta dishes;
Meat-based main courses;
Meals with sauces;
Frozen foods;
Airline meals;
Microwaveable or ovenable ready meals.
The materials must be selected according to the required temperature range and heating conditions.
Suitable paperboard trays can support forming, baking, displaying and serving in the same package. This may reduce product handling and eliminate the need to transfer the food into another container.
Potential applications include:
Bread;
Cakes;
Pizza;
Baked pasta;
Pies;
Pastries;
Other oven-baked products.
The appropriate material structure should be confirmed based on baking temperature, heating time, food composition and grease content.
Fresh meat packaging requires strong gas-barrier properties, reliable sealing and suitable liquid management.
MAP paper trays can be combined with a high-barrier liner and lidding film for products such as:
Beef;
Pork;
Poultry;
Processed meat;
Selected seafood products.
For products that require the film to fit closely around the food, Vacuum Skin Packaging may also be evaluated.
MAP and VSP serve different packaging objectives.
Modified Atmosphere Packaging changes the gas composition inside the package and maintains a controlled headspace around the food. It is widely used for salads, fresh produce, meat and ready meals.
Vacuum Skin Packaging removes air and forms the top film closely around the product. It is commonly used for fresh meat, seafood, cheese and premium products where strong product presentation and reduced free space are important.
The best solution should be selected according to the food type, target shelf life, appearance, distribution conditions and processing equipment.
A complete MAP project generally includes the following stages.
The project should begin by confirming:
Food composition;
Oil and moisture content;
Filling temperature;
Target shelf life;
Storage temperature;
Distribution distance;
Cold-chain conditions;
Final heating or consumption method.
The tray should be selected according to product volume, shape, depth, number of compartments, stacking requirements and retail presentation.
Available formats may include:
Regular rectangular trays;
Compartment paper trays;
Round salad bowls;
Custom-shaped containers.
The liner and lidding film should be selected according to the required barrier level, temperature resistance, anti-fog performance, peelability and printing requirements.
Possible material routes include PE, PP/CPP, CPET and EVOH-based multilayer structures. Renewable or compostable material options may also be evaluated for suitable applications, subject to testing and certification.
Custom dimensions or special structures may require new tooling. Samples should be produced for filling, sealing, transportation and consumer-use testing before mass production.
The sealing mould, temperature, pressure, dwell time, gas-flushing parameters and seal strength must be adjusted to match the selected tray and film.
Testing should identify potential issues such as leakage, channel seals, film damage, tray deformation or excessive peel force.
Residual oxygen, package leakage, microbiological performance, sensory quality, seal integrity and transportation stability should be evaluated under realistic storage conditions.
After commercial production begins, the tray-forming process, food filling, sealing quality and cold-chain performance should continue to be monitored.
Production data can then be used to optimize materials and operating parameters.
We provides more than MAP paper trays. We can support the complete packaging project with:
MAP paper tray and bowl selection;
Custom dimensions and compartment structures;
Tooling development;
Functional liner selection;
High-barrier lidding films;
Anti-fog and easy-peel film options;
MAP sealing machines;
Production-line compatibility testing;
Labels and packaging printing;
Sample development;
Food-packaging trials;
Mass-production support.
By developing the tray, lidding film, sealing equipment and labels together, food manufacturers can reduce compatibility risks between different suppliers and accelerate the transition from concept to commercial production.
MAP paperboard packaging combines modified-atmosphere technology with the environmental and branding advantages of paper-based packaging.
Its competitive value extends beyond plastic reduction. A well-designed solution can support food freshness, barrier protection, paper–plastic separation, retail differentiation and efficient project implementation.
For food manufacturers seeking product differentiation, packaging upgrades and lower-plastic solutions, MAP paperboard packaging is a practical technology worth evaluating and testing.
Looking for a MAP packaging solution?
[Contact Us] to discuss paper tray selection, sample testing, tooling development, lidding films, sealing machines and complete packaging-line support for salads, ready meals, bakery products, fresh meat and other food applications.
