The purpose of modified atmosphere packaging is to replace the original air with a gas mixture that helps keep it fresh. Since both the film and the box are breathable, it is necessary to choose a material with high barrier properties.
The matching of film and box material can ensure more stable heat sealing, so they must be selected together.
In the gas packaging of refrigerated fresh meat, it is necessary to choose a high-barrier PP box. However, due to the condensation of water vapor in the meat, it may fog up and affect the appearance, so a high barrier film with anti-fog performance should be selected to cover the meat.
In addition, because CO2 dissolves in water, it will cause the cover film to collapse and deform, affecting the appearance.
Therefore, PP coated PE box with stretchable anti-fog film is the first choice.
Disadvantages: Can not print in color.
Overall, when choosing frozen meat for improved atmosphere packaging films and boxes, the following are some suggestions:
Thin film material: Select a thin film material with high barrier performance to ensure that the packaging can effectively block gas penetration. Common materials include polyethylene (PE), polypropylene (PP), and polyester (PET). Suitable materials can be selected based on specific needs.
Anti fog performance: Due to the condensation of water vapor in meat, it can cause fog and affect the appearance of the packaging. Therefore, choose a film with anti fog performance to cover the meat to ensure visibility.
Box Material: Choose materials with high barrier performance for the box to protect meat from external gas penetration. Polypropylene (PP) boxes are usually a good choice because they have high barrier properties.
Bonding performance: Ensure that the film and box materials can effectively bond together to ensure stable thermal sealing. This can avoid air leakage and gas permeation in the packaging.
Color printing: If color printing is important for product packaging, it is necessary to consider selecting film materials suitable for color printing. Some special coating films can provide high-quality color printing effects.
Post time: Sep-05-2023
