The invention discloses a sealing cover film. The cover film comprises the components of, from outside to inside: a PET layer, an aluminum layer, an
ethylene acrylic
copolymer layer, a bimodal
polyethylene layer, and a composite
polyethylene layer. Compared with prior arts, the cover film provided by the invention has the characteristics that: (1) the film has good
flavor maintaining performance, dampness inhibiting performance, and
gas barrier performance; (2) the cover film is adapted to high-speed packaging; (3) the cover film is convenient to process, and can be subjected to fast product-change, such that the cover film can be adapted to productions with large and small orders; (4) the film has low cost and higher
cost performance; and (5) the cover film has the unique
internal layer design, and has a repeated opening and sealing function, such that rest contents can be well protected. The cover film provided by the invention can be widely applied in packaging of biscuits, jam, potato chips (bar), instant food, puffed food,
snack food, and the like. The cover film is suitable for fast pace life of modern times, and assist in reducing the application of
secondary packaging. In actural packaging processed, with the cover film,
package yield can be effectively ensured,
film material waste is low, production efficiency can be effectively improved, and cost can be reduced.