| 摘要 |
PURPOSE: To obtain excellent solvent resistance, blocking resistance and ink bondability by a method wherein an aqueous coating liquid containing a specified easily bondable resin and a composition mainly made of a compound having a specified amount or more of an oxazoline group in a molecule is applied on one side of a polyester film and then the resultant film is dried, stretched and heat-treated so as to provide an easily bondable coating film. CONSTITUTION: On at least one side of a polyester film, an aqueous coating liquid containing a composition mainly made of 100 pts.wt. easily bondable resin consisting of an acrylic resin having the secondary transition point of 20-100 deg.C and/or an acrylic modified polyester resin having the secondary transition point of 20-100 deg.C and a compound having two or more of oxazoline groups in a molecule is applied by means of a method such as a gravure coating method or the like. After the application of the aqueous coating liquid, the resultant film is stretched and, when necessary, further re-stretched longitudinally or laterally and heat-treated at 150-270 deg.C so as to obtain the coated easily bondable coating film. |
