Working Principle Of Dq370t Modified Atmosphere Packaging Machine

A modified atmosphere packaging machine can extend the storage life of fresh fruits and vegetables by controlling oxygen and carbon dioxide inside a sealed tray. DQ370T is designed for tray sealing under modified atmosphere conditions, with a maximum tray size of 430 × 310 × 60 mm and a listed output of about 360–1,200 boxes per hour, depending on tray configuration.

How Modified Atmosphere Packaging Works

Fresh produce continues to respire after harvest. It consumes oxygen and releases carbon dioxide, so the internal atmosphere changes after sealing.

A MAP packaging machine（DQ370T） adjusts the initial gas composition before sealing. The film then controls gas exchange, while product respiration changes the package atmosphere during storage.

MAP does not place produce into a literal “sleep” state. It lowers metabolic activity by maintaining a controlled gas environment that slows respiration and quality loss.

Why Gas Balance Matters

A suitable gas mixture must match the produce and package design. Oxygen that is too low can cause anaerobic respiration, while unsuitable carbon dioxide levels can affect flavor and tissue quality.

The modified atmosphere packaging equipment should therefore be selected around several conditions:

•  Produce type, maturity, and respiration rate
•  Storage temperature and distribution conditions
•  Tray volume and package headspace
•  Film oxygen and carbon dioxide permeability
•  Moisture accumulation inside the package
•  Required storage period

Produce Type Determines the MAP Formula

Different fruits and vegetables have different respiration rates. Lettuce, mushrooms, berries, cabbage, and fresh-cut vegetables may require different atmosphere conditions.

Map packaging equipment should not be configured with one universal gas recipe. Gas concentration, film permeability, product temperature, and package volume must be matched to the selected produce.

For fresh-cut products, temperature control becomes more important because cutting increases exposed tissue and can raise respiration rates.

DQ370T Packaging Capacity

DQ370T is a tray-sealing system designed for modified-atmosphere packaging applications. Its listed maximum film width is 370 mm, with a maximum film diameter of 200 mm.

Actual production speed depends on tray size, loading pattern, sealing cycle, and the number of trays processed per cycle.

Sealing Quality Controls Gas Retention

A map sealing machine must create a stable seal before the package enters storage or distribution. Poor sealing can allow uncontrolled gas exchange and reduce the intended MAP effect.

Important sealing conditions include:

1. Sealing temperature
2. Sealing time
3. Film compatibility
4. Tray material
5. Edge cleanliness
6. Seal pressure

DQ370T uses automatic film feeding with sensors, while sealing parameters can be adjusted through its control system.

Film and Tray Selection

Packaging material is part of the atmosphere-control system. Different films have different oxygen and carbon dioxide permeability, while trays vary in rigidity, sealing behavior, and barrier properties.

Modified atmosphere packaging equipment should therefore be evaluated together with the selected film and tray rather than as a standalone machine.

Practical MAP Setup Steps

A reliable process can follow this sequence:

1. Identify the respiration characteristics of the produce.
2. Set suitable oxygen and carbon dioxide targets.
3. Select film with appropriate gas permeability.
4. Match tray volume with product loading.
5. Set sealing temperature, pressure, and time.
6. Check package atmosphere during storage trials.
7. Maintain suitable refrigeration throughout distribution.

A modified atmosphere packaging machine provides the sealing and gas-control platform, but shelf life also depends on product quality, sanitation, temperature, and packaging material.

For fresh fruits and vegetables, effective MAP is a balance between respiration and gas exchange. DQ370T can provide the tray-sealing platform, while the final preservation result depends on matching gas composition, film properties, tray design, and storage temperature.

DQ370T table top MAP tray sealing machine Dasen manufactured, is widely used for food distribution in supermarkets such as fresh meat, cooked meat products, fish, poultry, shellfish, fruits, coffee, tea, vegetables, bread, etc. Modified atmosphere packaging has the characteristics of keeping food quality, freshness, color, shape and taste, and is popular in European and American markets

* Molds customized for the popular tray sizes in your territory for your marketing penetrating, with free charge.

* Modified atmosphere packaging to extend shelf life, outlook and taste retention.

* Real-time fault indication, enable quick adjustment and after-sales service.

* Stainless steel and anti-corrosive aluminum construction.

* Teflon coated sealing plate, easy maintenance if film melt and sticked. 

* Sealing temp/time, film and other parameters can be easily adjusted on touch screen controller. 

* Easy to operate, and neat profile cutting and sealing of film, pneumatic drive.

* Precise and automatic film feeding with photoelectric and disc sensors.

* Safety and sliding mold design, and easy changeover without tools.

* Safe and hygienic, CE certification.

* Supply training video and after-sales service online with quick response.

* Voltage/plug type can be customized as required. WITT gas mixer optional.

* Package material: trays made from Degradable pulp box/ PP / PET/Aluminum foil, and we could supply tray+film according to your size and print if needed.

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