Packaging adhesive film and preparation method thereof

The invention discloses a packaging adhesive film and a preparation method thereof. The packaging adhesive film comprises a barrier layer and an anti-corrosion layer, the barrier layer comprises matrix resin and a water blocking agent, and the water blocking agent is a compound I containing a functional group capable of forming a hydrogen bond with water or a compound II capable of being subjectedto combination reaction with water or a compound III capable of adsorbing water to form crystal water; wherein the anti-corrosion layer comprises matrix resin and an anti-corrosion assistant, the specific surface area of the anti-corrosion assistant is 70-180m< 2 >/g, the density of the matrix resin is 0.825-1.125g/cm< 3 >, and the melt index of the matrix resin is 0.5-45g/10min. The packaging adhesive film disclosed by the invention has relatively good corrosion resistance and cohesiveness, and is simple in preparation process and low in cost. 本发明公开了一种封装胶膜及其制备方法。该封装胶膜包括阻隔层和抗腐蚀层，所述阻隔层包括基体树脂和阻水剂，所述阻水剂为含有能与水形成氢键的官能团的化合