Laminated film for pouch, pouch, and method for manufacturing laminated film

A method for manufacturing a laminated film, for a pouch, the laminated film including an intermediate layer film, an inner layer film, and an outer layer film, the intermediate layer film being disposed between the inner layer film and the outer layer film, the pouch being formed with a cut guide line, the method comprising:

• preparing the inner layer film and the intermediate layer film layered with an inner adhesive layer therebetween;
• forming a slit-shaped half-cut portion constituting the cut guide line by inserting a cutter blade, in a film thickness direction, from an outer surface of the intermediate layer film toward an inner surface side of the intermediate layer film until the cutter blade reaches the inner adhesive layer;
• introducing an adhesive constituting the inner adhesive layer into the half-cut portion to cause the adhesive to be disposed in the half-cut portion formed in the intermediate layer film;
• and
• subsequently layering and fixing the outer layer film onto the outer surface side of the intermediate layer film.