| 摘要 |
<p>PCT No. PCT/GB96/00956 Sec. 371 Date Oct. 20, 1997 Sec. 102(e) Date Oct. 20, 1997 PCT Filed Apr. 22, 1996 PCT Pub. No. WO96/33008 PCT Pub. Date Oct. 24, 1996Batch mixing takes place in the gap (3) between grooved faces of counter-rotating discs (1,2) such that the spiral grooves (8) and lands (10) of each face traverse the grooves (8) and lands (10) of the other, to shear and split material drawn inwardly along the grooves (8) for distributive mixing. Modifications include plural-turn spiral, straight, and truncated spiral grooving (FIGS. 5 to 10), and batch mixing in which only one disc (28) rotates (FIG. 11). Continuous mixing involving shear is carried out within a cylindrical barrel (40 FIG. 12;57 FIG. 13) between its internal helical-grooving (43;590 and the helical grooving (44;60), of opposite hand, of a rotor (41;58). The shearing can produce mechanochemical reactions that break down the molecular structure of the material, notably in the context of mastication and solubilising of used rubber in reclaim from vehicle-tyres.</p> |
