How to choose the right materials for your packaging bags?

April 13, 2023

Different kinds of food need different food packaging bags with different material structures according to the characteristics of the food. So what kind of food packaging bags are suitable for what kind of food? Today I will tell you how to choose the right packaging bags from the material structures for your products.

1. Green tea bags

Product requirements: anti-deterioration, anti-discoloration, anti-taste, that is, to prevent the oxidation of protein, chlorophyll, catechin, and vitamin C contained in green tea.

Design structure: BOPP/AL/PE, BOPP/VMPET/PE, KPET/PE 


Reason: AL foil, VMPET, and KPET are all materials with excellent barrier properties, and have good barrier properties to oxygen, water vapor, and odor. AK foil and VMPET are also excellent in light protection. The products are moderately priced.

2. coffee bean bags

product requirement:

Anti-water absorption, anti-oxidation, anti-hardness of the product after vacuuming, and keep the volatile and easily oxidized aroma of coffee.

Design structure:



AL, PA, and VMPET have good barrier properties, such as water and gas barriers, and PE has good heat sealing properties.

3. Retort packaging bags

product requirement:

For packaging of meat, poultry, etc., it is required that the packaging has good barrier properties, resistance to bone hole breakage, and no breakage, no cracking, no shrinkage, and no peculiar smell under sterilization conditions.

Design structure:





From the performance of each material:

PET: high temperature resistance, good rigidity, good printability and high strength.

PA: High temperature resistance, high strength, flexibility, good barrier properties, and puncture resistance.

AL: Best barrier properties, high temperature resistance.

CPP: High temperature resistant cooking grade, good heat sealing performance, non-toxic and tasteless.

PVDC: high temperature resistant barrier material.

GL-PET: Ceramic vapor-deposited film with good barrier properties and microwave transmission.

Generally speaking, transparent bags are mostly used for cooking, and AL foil bags can be used for ultra-high temperature cooking.

4. Puffed snack food packaging bags

Product requirements: Oxygen resistance, water resistance, light protection, oil resistance, fragrance retention, scratchy appearance, bright colors, and low cost.

Design structure: BOPP/VMCPP

Reason: Both BOPP and VMCPP are scratchable, and BOPP has good printability and high gloss. VMCPP has good barrier properties, keeps fragrance and moisture. CPP oil resistance is also better.

5.  Biscuit packaging bags

Product requirements: good barrier properties, strong shading properties, oil resistance, high strength, odorless and tasteless, and the packaging is quite scratchy.

Design structure: BOPP/EXPE/VMPET/EXPE/S-CPP

Reason: BOPP has good rigidity, good printability and low cost. VMPET has good barrier properties, avoid light, oxygen and water. S-CPP has good low temperature heat sealability and oil resistance. 

6. Milk powder packaging bags

Product requirements: long shelf life, fragrance and taste preservation, anti-oxidative deterioration, anti-moisture absorption and agglomeration.

Design structure: BOPP/VMPET/S-PE

Reason: BOPP has good printability, good gloss, good strength, and moderate price. VMPET has good barrier properties, light protection, good toughness, and metallic luster. It is better to use enhanced PET aluminum plating, and the AL layer is thick. S-PE has good anti-pollution sealing performance and low temperature heat sealing performance.

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