Modified Atmosphere Packaging Materials and Applications

With the demand in the market, many businesses are transitioning their products from traditional packaging to modified atmosphere packaging. Choosing the right materials for modified atmosphere packaging can save costs and reflect the product

Aesthetic advantages and enhanced shelf life. Often, when choosing materials for modified atmosphere packaging, one does not know where to start and what material to look for in the packaging.

Materials for Modified Atmosphere Packaging:

Semi hard materials/hard materials: APET tray, PP tray, PVC tray, HIPS tray, roll film. Amorphous polyethylene terephthalate, used as a prefabricated box material,

It has the following characteristics: it can be peeled off cleanly and has no residue on the tray; High oxygen and water vapor barrier; Printed or unprinted; Colors can be selected. In addition, it is worth one

The application of anti fog technology and easy to peel technology is mentioned.

Anti fog technology: The anti fog component is buried in the center of the heat sealing layer, and when the component continues to migrate to the surface of the film, it produces an anti fog effect, preventing the product from fading and drying.

Easy peel off technology: separates the heat sealing layer from the peel off layer, achieving complete heat sealing of the heat sealing layer, and the easy peel off force is not affected by the heat sealing temperature or machine condition.

Application and Prospect of Modified Atmosphere Packaging

At present, MAP mainly consists of multi-layer high barrier cover films (PET or OPA/PE/EVOH/PE) and multi-layer high barrier trays (APET or PP or EPS/PE/EVOH/PE),

A typical MAP for beef is to use 80% O2/20% CO2 and 100% N2 for processed meat, which can achieve extended shelf life through these means

The advantages of (processing meat for 1-4 weeks, beef for 4-10 days), bright color (red meat), and preventing juice leakage (requiring absorbent pads) still have the following drawbacks:

1. The contents of the bag may shift

2. Flat display, additional transportation and storage display space required

3. Shorter shelf life than vacuum packaging

4. Expensive (multi-layer high barrier)

5. Not environmentally friendly and non recyclable (multi-layer)

The future MAP film and tray will shift from multi-layer PP and multi-layer APET to single-layer APET trays. This change can achieve 100% environmentally friendly recycling,

It has high reliable sealing integrity, adjustable opening force, high chemical barrier performance, reduces raw material costs and environmental taxes.