| 摘要 |
PROBLEM TO BE SOLVED: To manufacture a high-quality polyester resin sheet at a high output rate. SOLUTION: A layer composed of a polyester resin B with MB-PB representing a difference between a metallic element equivalent MB (mol/t), and a phosphorus element equivalent PB (mol/t) which is within the range of -30 to 5, is laminated on at least one of the sides of a layer composed of a polyester resin A with MA-PA representing a difference between a metallic element equivalent MA (mol/t) and a phosphorus element equivalent PA (mold/t) which is within the range of 10 to 80. Further, a molten polyester resin sheet is discharged onto a rotary cooling body from a die head. Then the sheet is electrically charged by applying voltage to an electrode set on the sheet and cooled in close contact with the rotary cooling body. Thus, the polyester resin sheet is manufactured. |
