| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a composite sheet material including a porous core layer as one embodiment. <P>SOLUTION: The porous core layer comprises a thermoplastic polymer, about 20 to about 80 wt.% of reinforcing fibers based on the total weight of the porous core layer, and an effective amount of a flame retardant. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
