POLYAMIDE LAMINATED RESIN FILM

摘要

PROBLEM TO BE SOLVED: To provide a resin film good in characteristics such as bending fatigue resistance, impact resistance or the like and reduced in dimensional change even if used under high humidity environment or under environment wherein water is present. SOLUTION: In a laminated resin film wherein a resin film layer (Y) based on an aliphatic polyamide resin (B) is laminated to the single surface or both surfaces of a resin film layer (X) based on an aliphatic polyamide resin (A), the water absorbability of the aliphatic polyamide resin (B) is 0.5 times or less that of the aliphatic polyamide resin (A) and the dimensional change ratio of this laminated resin film per humidity difference of 60% R. H. is 2.0% or less in both directions of the longitudinal direction of the film and the direction crossing this direction vertically.