Abrasive tool making process – material – or composition – Pore forming
Patent
1978-10-30
1983-12-20
Anderson, Philip E.
Abrasive tool making process, material, or composition
Pore forming
1510493, 51307, 264 453, 264 462, 264 54, B29D 2704, C11D 1704, B24D 332
Patent
active
044215266
ABSTRACT:
This invention relates to dry, dense, hydrophilic polyurethane foam cleaning pads containing abrasives, detergents and combinations thereof dispersed integrally therein as well as to a method of manufacturing these pads. The pads' surfaces are strengthened by the densification of the reacting prepolymer resin during manufacture, and preferably the pads have at least one surface textured for additional cleaning area. The surfaces can contain an optional additional layer of abrasives to obtain a greater durability and a more desirable scouring action.
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Strickman Melvyn B.
Strickman Robert L.
Anderson Philip E.
Sherwood Research and Development Partnership
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