What is what does no need to vent film mean?

"No need to vent film" is a type of packaging film that does not require air to escape during the sealing process. This film is typically used for packaging products that may release gases or other substances when packaged, such as food or medical products. The film has a special design that allows excess air to escape through small channels or pores, eliminating the need for vent holes. This film is often preferred by packaging manufacturers as it reduces the risk of contamination and extends the shelf life of the products being packaged.