| 摘要 |
<p>Particle boards are prepared from comminuted plastic scrap, alone or in admixture with wood and like cellulosic particles, using an organic polyisocyanate binder. Composite panels are also disclosed in which the comminuted plastic scrap forms the inner layer and the outer layers are fabricated from cellulosic material. In a particular embodiment the plastics scrap material employed is derived from junked automobiles.</p> |
