Gas barrier laminate and packaging material including the same

A gas barrier laminate, comprising:

• a resin substrate;
• a first coating layer containing a carboxylic acid polymer;
• a second coating layer containing a polyvalent metal compound and a resin;
• an inorganic vapor deposition layer that contains an inorganic oxide and is between the resin substrate and the first coating layer;
• and
• a primer layer that contains a urethane compound and is between the resin substrate and the inorganic vapor deposition layer;
• wherein:
• the resin substrate, the first coating layer, and the second coating layer are laminated in this order;
• a ratio of a thickness of the second coating layer to a thickness of the first coating layer is in the range of 1.0 or more and 4.0 or less;
• and
• the second coating layer satisfies each of the following conditions 1 to 3:
• (condition 1) a haze of the second coating layer is 8% or less;
• (condition 2) a surface roughness Ra of the second coating layer is ½ or less of the thickness of the second coating layer;
• and
• (condition 3) the number of concave portions having (i) a depth 50% or more of the thickness of the second coating layer and (ii) a diameter of 1.5 μm or more per unit area on a surface of the second coating layer opposite to the first coating layer is 2/0.01 mm2 or less;
• wherein the resin of the second coating layer is selected from the group consisting of an alkyd resin, a melamine resin, an acrylic resin, a urethane resin, a phenol resin, an amino resin, a polyester resin, a fluororesin, an epoxy resin, and an isocyanate resin and the resin of the second coating layer is the only resin in the second coating layer;
• and
• wherein the first coating layer is in direct contact with the inorganic vapor deposition layer.