A nonporous composite material laminate formed by combination of a liquid crystal polymer film with two support membranes and stretching the composite material laminate to provide a multiaxially-oriented liquid crystal polymer film, wherein the liquid crystal polymer film contains 1 to 30 volume percent of a solid particulate material in amounts sufficient to reduce the thickness variability of the film whereby the ratio of the standard deviation of thickness values to the mean thickness value of the film is 0.1 or less. The liquid crystal polymer film has balanced physical properties, uniform thickness, and smooth surfaces. A process for making the composite material and orienting the liquid crystal polymer is also disclosed.