| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyester resin composition which can be calendered into a sheet which is extremely excellent not only in releasability from a calender roll during calendaring but also in take-off properties is fused state from a calender roll to a cooling roll and has high clarity and excellent quantities. SOLUTION: This polyester resin composition comprises 100 pts.wt. amorphous polyester resin, 0.01-5 pts.wt. lubricant, and 0.01-50 pts.wt. mol.wt.- increasing agent and gives a calendered sheet of which the weight average mol.wt. of the polymer component is higher by at least 5% than that of the polyester before calendaring. COPYRIGHT: (C)2003,JPO |
