METHOD OF FORMING GAS-BARRIER LAMINATED FILM FREE FROM HEAT-TREATMENT HISTORY

摘要

PROBLEM TO BE SOLVED: To provide an industrially prominent process for manufacturing a film material rich in gas barrier characteristic by resolving disadvantage of a gas barrier laminated film which is obtained by using a poly alcohol based resin, a poly carboxylic acid based resin and a metal compound in combination and has improved gas barrier characteristic by using ester bond and metallic ion cross-linking caused by heat-treatment, the disadvantage in which the deterioration or the deformation of the film base material, the heat degradation or the coloring of a gas barrier resin or a large consumption of energy or other problems due to a high temperature long term heat treatment are unavoidable.;SOLUTION: The gas barrier laminated film is formed by infiltrating a metallic compound aqueous solution to a laminated film without applying heat treatment thereto, the laminated film being formed by applying the poly carboxylic acid based resin for forming a gas barrier layer onto a film base material, and drying the film in a high humidity treating vessel where the aqueous solution containing a polyvalent metal compound is atomized, cleaning the film with a cleaning liquid if needed and drying the film to cross-link the poly carboxylic acid based resin with the metallic ion.;COPYRIGHT: (C)2007,JPO&INPIT