| 摘要 |
2066657 9201536 PCTABS00010 An open low density abrasive article adapted for the cleaning of aluminum or similar surfaces comprising a lofty open non-woven three dimensional web form of a plurality of interlaced randomly extending flexible durable, tough, resilient organic fibers said web fibers being firmly adhesively bonded together at points where they cross and contact each other to form a three-dimensionally integrated structure throughout said web, and abrasive particles distributed within said web and firmly bonded to the web fibers by a relatively hard binder, the interstices between adjacent fibers being open and substantially unfilled by binder or abrasive, there being defined throughout said article a tridimensionally extending network of intercommunicating voids constituting the major portion of the volume of the said article, said article being flexible and readily compressible and, upon release of pressure capable of recovering substantially completely to its initial form, wherein said abrasive is defined by any one of the measures of hardness selected from the group of measures consisting of a) Mho's 4.5 - 6,3, b) Rockwell B60 - 85, c) Brinell 95 - 142, d) Knoop 120 - 180. In certain embodiments, the abrasive layer may be associated with sponge-like material and/or a cleansing or lubricating agent suitably a soap.
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