| 摘要 |
<p>PROBLEM TO BE SOLVED: To economically provide a laminated biaxially oriented polyamide film excellent not only in gas barrier properties and adhesiveness but also in transparency at an initial stage and even after boiling treatment in such a case that the laminated film is provided with a sealant layer to be used as a packaging bag. SOLUTION: In the laminated biaxially oriented polyamide film wherein an inorganic vapor deposition layer and a sealant layer are successively provided on the single surface of at least the A-layer of a biaxially oriented polyamaide film comprising layered constitution of A/B, A/B/A or A/B/C and characterized by that the density of projections with a height of 0.27μm or more is <200/mm2 on the surface of the A-layer of the polyamide film over the total width of the polyamide film, the maximum dimensional change ratio of the biaxially oriented polyamide film during the immersion in hot water at 95 deg.C is 4.0% or less over the total width of the biaxially oriented polyamaide film and the inclination in the width direction of the maximum dimensional change ratio difference of the polyamide film is 1.00%/m or less and the maximum dimensional change ratio of the polyamide film after taken out of hot water is 5.0% or less over the total width of the polyamide film and the inclination in the width direction of the maximum dimensional change ratio difference of the polyamide film is 1.0%/m or less.</p> |
