| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a polycarbonate resin foam that has fine cells and is excellent in light-reflecting characteristics, and to provide a method for producing the polycarbonate resin foam with high production efficiency. <P>SOLUTION: The polycarbonate resin foam has a crystallinity of 0.15-2% and an average cell density of not less than 1×10<SP>9</SP>cells/cm<SP>3</SP>. The polycarbonate resin foam having fine cells is produced by an extrusion method by adjusting the extrusion conditions so that the crystallinity of the foam is adjusted to the range as described above. A light reflection plate excellent in light-reflecting characteristics can be produced by using the polycarbonate resin foam. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
