| 摘要 |
PURPOSE:To obtain a laminated film having excellent adhesiveness in laminating the laminated film to another film, comprising a polyester film having a coated layer containing a specific polyurethane, obtained by coating and orientating method. CONSTITUTION:(A) A polyester film having >=80mol% constituent component comprising ethylene terephthalate or ethylene naphthalate is coated with (B) a coating solution containing a polyurethane comprising a polycarbonate as a constituent component, preferably a water dispersion type polyurethane containing an anionic group, the film is orientated to give the aimed film. Preferably the film A is uniaxially orientated at 60-130 deg.C by 2-6 times by roll drawing method, the orientated film is coated with the coating solution B, arbitrarily dried, orientated in the direction perpendicular to the previous orientation direction at 80-130 deg.C by 2-6 times and heat-treated at 150-250 deg.C for 1-600 seconds to give a film having 0.01-5mum thickness of coating layer. |
