What is no need to vent film meaning?

No need to vent film is a type of film used in food packaging that eliminates the need for venting during microwave cooking. It is designed with special permeability properties that allow steam to escape from the food package without the need for holes or vents. This type of film is made from special polymers that form a microporous structure that allows steam to pass through while keeping the food inside moist and tender. By eliminating the need for venting, this film helps to reduce the risk of food contamination while also making microwave cooking more convenient and efficient. No need to vent film is commonly used for packaging ready-to-eat meals, frozen foods, and other snack items that are often cooked in the microwave.