To obtain a laminated film and a packaging bag with excellent strength, moistureproofness and transparency and being suitable as a packaging material for protecting electronic parts from moisture and static electricity.
A laminated film wherein the outermost layer is the drawn nylon film (A) or the metallized film (B) and the innermost layer is the heat seal layer (D) and the metallized film (B) is such a metallized film that is prepd. by forming a transparent inorg. metallized film on at least one face of a transparent polymer film base material and the gas barrier layer (C) is such a gas barrier layer that contains at least one layer of composite metallized film prepd. by forming a water-resistant film prepd. by heat-treating a coating of a mixture contg. polycarboxylic acid or its partly neutralized product and succharides on at least one face of a transparent polymer film base material through a transparent inorg. metallized film, is provided.
OBA HIROYUKI
TANAKA HIDEAKI
HASEGAWA TOMOHISA
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