| 摘要 |
<p>PCT No. PCT/SE80/00266 Sec. 371 Date Jul. 16, 1981 Sec. 102(e) Date Apr. 27, 1981 PCT Filed Oct. 30, 1980 PCT Pub. No. WO81/01253 PCT Pub. Date May 14, 1981.A wear-resistant rubber product adapted to be used as, for example, a lifter in grinding mills, comprises at least two prefabricated parts (11, 12) interconnected with one another by means of a binder layer having a thickness of at least 2 mm and consisting of in situ cast and cured polyurethane. The wear-resistant rubber product is manufactured by placing the prefabricated cured rubber parts (11, 12) at a distance of at least 2 mm from one another and by introducing, preferably injecting a reacting urethane rubber composition with excess isocyanate groups into the gap (13) to cause said prefabricated parts on either side of said gap to be contacted subtantially simultaneously by the said urethane rubber composition.</p> |
