| 摘要 |
<p>PCT No. PCT/AT89/00117 Sec. 371 Date Jun. 5, 1991 Sec. 102(e) Date Jun. 5, 1991 PCT Filed Dec. 6, 1989 PCT Pub. No. WO90/06218 PCT Pub. Date Jun. 14, 1990.A shaped part comprises a body of plastic material, more than 50% of the volume of the shaped part consisting of plastic waste particles and particles of impurity distributed therethrough and embedded therein. The plastic waste particles have a flow point or more than 80 DEG C. and a length of less than 6 mm, up to 70% of the volume of the shaped part comprising plastic waste particles having a flow point exceeding the maximum processing temperature of the plastic material of the body. A portion of the plastic waste particles have a wall thickness of more than 0.5 mm and the remaining portion thereof has a wall thickness of less than 0.5 mm. Particles of the plastic material, plastic waste and impurities are mixed, the plastic material particles are plasticized at a processing temperature of 150 DEG C. to 210 DEG C. while the mixture is subjected to a spiral movement and the pressure is increased to obtain a melt, of the plastic material wherein the plastic waste and impurities are substantially uniformly distributed and embedded, and the melt is shaped.</p> |
