The main materials of frozen food packaging bags include the following:

. PET/PE: This composite material structure is common in frozen food packaging. It has the characteristics of moisture resistance, cold resistance, good low-temperature heat sealing performance, and relatively low cost.

. BOPP/PE, BOPP/CPP: This type of composite material structure also has the characteristics of moisture resistance, cold resistance, high low-temperature heat sealing tensile strength, and relatively economical cost. Among them, the packaging bag of BOPP/PE structure has a good appearance and feel, which can improve the grade of the product.

. PET/VMPET/CPE, BOPP/VMPET/CPE: Due to the presence of the aluminum coating layer, the surface of this type of composite material is beautifully printed, but the low-temperature heat sealing performance is slightly poor, the cost is high, and the utilization rate is relatively low.

. PA/PE, PET/PA/LLDPE, PET/PA/AL/PE: These composite materials are resistant to freezing and impact. Due to the presence of the PA layer, they have good puncture resistance, but the cost is high. They are suitable for packaging angular or heavy food products.

‌Material selection and design requirements for frozen food packaging bags‌:

·‌Moisture resistance‌: Frozen food packaging bags need to have good moisture resistance to prevent food from getting damp and deteriorating.

·‌Cold resistance‌: Packaging materials need to remain stable in low temperature environments without cracking or deforming.

·‌Low temperature heat sealing performance‌: Packaging materials can still be heat-sealed at low temperatures to ensure the sealing of the packaging.

·‌Cost‌: Under the premise of ensuring quality, cost is also an important factor to consider when selecting materials.

Frozen food packaging bags:

The requirement is to maintain the quality characteristics of the product from production, transportation to sales, prevent bacterial contamination and be convenient to eat.

Packaging type: A. Three-side seal, B. Four-side seal, C. Eight-side seal, D. Pillow bag

Contents: Frozen fish and shrimp, beef/chicken, frozen pastries, various frozen foods, etc.

The packaging materials must meet the following conditions:

Have certain mechanical strength (high temperature resistance), barrier properties (high blocking properties for gas and liquid), acid and oil resistance, hygienic, and durable

Material combination: ①BOPA+PE; ②PET+AL+BOPA+LLDPE; ③PET+LLDPE; ④Customized

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