The invention provides a high-barrier film for packaging high-temperature-boiling-resistant food, which is characterized by sequentially comprising a
polypropylene film, a water-resistant film, a polytrifluorochloroethylene film, an
epoxy modified organic
silicon resin film, a
polyurethane film, a
flame retardant and a
coupling agent from the
surface layer to the inner layer, and the adjacent films are adhered by adopting an
adhesive.
Glucomannan loses acetyl groups after being subjected to alkali treatment, then intermolecular
hydrogen bonds are formed, partial crystals are formed due to the action of the
hydrogen bonds, a net-shaped structure is formed by taking the crystals as nodes, the structure is stable,
heat resistance is achieved, the
gel strength hardly changes along with heating intensity, and the water-resistant film is a water-resistant film. The water boiling resistance and the high
temperature resistance of the
composite film packaging material are remarkably improved, the whole packaging film has the characteristics of
low shrinkage rate and high tensile strength after high-
temperature treatment, the problems of deformation and shrinkage after a conventional
film material is placed in a high-temperature environment are effectively solved, and the performance of the
composite film packaging material is improved.