| 摘要 |
<p>Sheet waste of relatively low bulk density is disintegrated into particles or flakes, and mixed with thermoplastics granulate of relatively high bulk density, in a uniform feed stream, and introduced into an extruder (109). Separate thermal regeneration of the waste is rendered unnecessary and ensuring thermal decomposition of the waste does not take place. The process can be carried out by a simple and operationally reliable apparatus (10), which possesses a fall shaft (11) having two mixing zones (M<1>, M<2>) one above another; in these zones, waste particles (129) conveyed in an air stream are mixed with a portion of the granulate (151) suppled from a passage (161) and the mixture is then combined with the remaining portion (152) of the granulate, supplied into the base of the fall shaft (11) through apertures (221), the air from the waste particle stream being vented from shaft (11), by vents (114), above the apertures (221). <IMAGE></p> |
