Aluminum foil itself is a very good oxygen barrier material with extremely low oxygen permeability. Generally, the oxygen transmission rate of aluminum foil is usually 0.01 to 0.1 cm³/m²·h per square meter per hour (cm³/m²·h), or even lower. Pure aluminum foil (thickness ≥12μm) has excellent oxygen barrier properties, but in actual applications, due to the presence of tiny pinholes or cracks …