The key characteristics of foam bags are their cushioning, insulation, lightweight, and customizability, making them widely used in packaging, transportation, and protection.
Physical Foaming: High-pressure injection of gas (such as nitrogen) followed by rapid decompression creates a uniform closed-cell structure, resulting in better environmental friendliness.
Chemical Foaming: Relies on the decomposition of a foaming agent to generate gas; lower cost but may leave trace amounts of chemicals.
Cushioning and Shock Absorption, Strong Protection: Foam bags contain a large number of independent, closed air bubbles, with 3-6 million microbubbles per cubic decimeter. When subjected to external impact, these bubbles absorb energy through compression and gas stagnation, effectively dispersing pressure and providing comprehensive protection for fragile items (such as electronic products and glassware).
Excellent Thermal Insulation: Foam bags use expandable polystyrene (EPS) as the main raw material, which has low thermal conductivity and excellent insulation capabilities. They are commonly used in cold chain transportation for packaging frozen foods, fresh produce, and other items requiring a constant temperature environment to minimize temperature fluctuations.
Lightweight and environmentally friendly, reducing logistics costs. Foam bags are extremely lightweight, helping to reduce the overall weight of packages and aligning with green logistics trends. Some products are made from recyclable polyethylene (PE) or biodegradable materials, supporting recycling and reducing environmental pollution.
Foam Bag Manufacturing Characteristics
