The invention discloses a window lamination method for paper. The window lamination method comprises the following steps: step 1, a two-sided
corona film with one side pre-coated with
hot melt glue isadopted, the other side of the two-sided
corona film is bonded with the surface of the paper to be subjected to window lamination, full lamination of the two-sided
corona film on the paper is realized, and an early semi-finished product is obtained; step 2, windowing is performed on the early semi-finished product, that is, a window is die-
cut in a predetermined position of the early semi-finished product, scraps produced in
die cutting are removed, and an intermediate semi-finished product is obtained; step 3, a heat seal film provided with co-
polypropylene on at least one side is adopted,
hot melt glue of the intermediate semi-finished product is covered with the side, provided with co-
polypropylene, of the heat seal film, the heat seal film and the intermediate semi-finished product are bonded together through
hot pressing by a
hot pressing roller, and a finished paper product subjected to window lamination is obtained. The window lamination method has the advantages that the process difficulty is low, the effect of the window lamination finished product is good and the production efficiency is high.