Antifogging crosslinked thermal shrinkage film and preparation method thereof

The invention discloses an antifogging crosslinked thermal shrinkage film and a preparation method thereof. The preparation method comprises the following steps: uniformly mixing raw materials in an outer layer, a core layer and an inner layer, separately, then adding the raw materials into extruding equipment to be melted, separately, and passing the melted raw materials through a co-extrusion layer to obtain a compound melt; blowing the compound melt primarily, and cooling and sizing a primarily blown film bubble to form a pipe film; crosslinking linear molecular chains of the pipe film by electronic radiation; after pre-heating, carrying out secondary blowing and longitudinal drawing to obtain a compound film; and carrying out post-treatment sizing on the compound film, and trimming androlling the compound film to obtain the antifogging crosslinked thermal shrinkage film. An antifogging agent is relatively quick to play a role. When the antifogging crosslinked thermal shrinkage film is used as a packaging