Laminated packaging material

Abstract

In a laminated packaging material including a substrate, a silicon oxide layer, an adhesive layer or anchor coat layer and a heat-sealable resin layer which are successively laminated, the adhesive layer or anchor coat layer is formed by coating a water-based adhesive composition or a water-based anchor coat agent composition, respectively, on the silicon oxide layer, followed by drying. On the anchor coat layer, a solvent-free adhesive layer may be provided. Also in a laminated packaging material including a substrate, a silicon oxide layer, an ink layer, an adhesive layer and a heat-sealable resin layer which are successively laminated, the ink layer is formed by coating a water-based ink composition on the silicon oxide layer, followed by drying. In this case, the adhesive layer may preferably be formed by coating a water-based adhesive composition on the ink layer, followed by drying. When an oil-based ink is used as the ink composition, the anchor coat layer may preferably be formed by coating a water-based anchor coat agent composition on the silicon oxide layer, followed by drying.

Dependencies are inferred from the claim text.