Advantages of PE (Polyethylene) Film Packaging for Mooncakes in the Baking Industry

ore Advantages (Integrated with Packaging Machinery and Food Packaging Requirements)

1. Stable Chemical Properties & High Food Safety: PE exhibits excellent chemical stability with no risk of plasticizer migration. It can directly contact oil-rich foods like mooncakes, preventing odor contamination and leaching of harmful substances.
2. High-Temperature Resistance for Packaging Processes: With heat resistance exceeding 100℃, it is compatible with heat sealing and sterilization procedures in automated packaging lines (e.g., low-temperature sterilization after mooncake filling packaging).
3. Superior Flexibility: Low-Density PE (LDPE) boasts high tensile strength, making it resistant to tearing during traction and sealing in high-speed packaging machines (e.g., pillow-type packaging machines), thereby reducing production losses.
4. Qualified Basic Barrier Performance: It can block external dust and moisture (water vapor transmission rate ≤5g/(m²·24h)). When used with oxygen absorbers, it delays oil oxidation and mold growth of mooncakes, extending the shelf life to 30-60 days (meeting the warehousing and logistics needs of industrial mass production).
5. Excellent Transparency: With a light transmittance of ≥90%, it clearly displays the appearance of mooncakes to enhance visual appeal. Its surface is easy to print with key information such as production date and shelf life (compatible with automated inkjet printing operations).
6. Low Raw Material Cost & Mature Processing Technology: PE raw materials are cost-effective, and film processing technologies (e.g., blow molding, cast film extrusion) are well-established with high efficiency, making it suitable for large-scale mooncake packaging production.
7. Low Heat Sealing Temperature & High Efficiency: LDPE requires a heat sealing temperature of 120-150℃, resulting in lower energy consumption compared to other materials. Its high heat sealing strength enables compatibility with high-speed packaging lines (speed: 60-120 packs/minute), improving production efficiency.

8. Good Low-Temperature Resistance: With a brittle temperature of ≤-70℃, it meets the requirements of cold chain transportation (e.g., snow skin mooncakes) and prevents packaging brittleness and cracking.

9. Compatibility with Composite Packaging: It can be compounded with materials such as aluminum foil and PET (e.g., PE/aluminum foil/PE structure) to enhance barrier performance (oxygen transmission rate ≤1cm³/(m²·24h·0.1MPa)), suitable for long-term preservation of high-oil and high-moisture mooncakes.

10. Flexible Thickness Customization: Through processes like blow molding and extrusion lamination, PE films can be produced in different thicknesses (15-50μm). The thickness can be flexibly adjusted according to mooncake specifications (e.g., mini mooncakes, large-sized mooncakes), balancing protective performance and cost control.