PE functional film is a polyethylene film material with specific functions developed to meet the packaging needs of different products.
Core functional requirements:
Safe and non-toxic: Since it comes into direct contact with food, it must meet food-grade material standards to prevent the migration of harmful substances.
High oxygen barrier properties: Fried potato chips and puffed foods have high oil content, making them susceptible to rancidity and spoilage due to oxygen. Oxygen barrier properties can slow down oxidation reactions and extend shelf life.
High moisture barrier properties: Potato chips have low moisture content, and their crispness decreases after absorbing moisture. Moisture barrier properties prevent external moisture penetration, maintaining the food's texture.
Heat-sealing and sealing properties: Poor heat-sealing properties can lead to leaks or bag breakage; therefore, it is necessary to ensure moderate seal strength.
Sealing properties isolate external gases, preventing food from becoming damp or oxidizing.
