| 摘要 |
A process of producing a transparent resin film includes inflation molding in an upward direction a resin composition which is comprised of 100 parts by weight of a polybutylene terephthalate resin having an intrinsic viscosity IVa of at least 1.0, and between 15 to 45 parts by weight of a polycarbonate resin having an intrinsic viscosity IVb of at least 0.4. The polybutylene terephthalate and polycarbonate resins are present such that the ratio ?A/?B is between 0.35 to 1.5, wherein ?A is the melt viscosity of the polybutylene terephthalate resin at a shear rate of 100-1 at 260.degree.C, and ?B is the melt viscosity of the polycarbonate resin at a shear rate of 100-1 at 260.degree.C. During inflation molding, the resin composition is extruded at an extrusion temperature T(.degree.C) which satisfies the equation: 240.degree.C ? T(.degree.C) ? (MP - 26) + (53 x IVa) where MP is the melting point of the resin composition as determined by differential thermal analysis at a rate of 10.degree.C per minute. The films will exhibit a low haze value of less than 10% as determined by ASTM D 1003.
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