Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1991-04-11
1992-04-28
Rachuba, M.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51317, 51318, 51326, 51410, 51418, 51424, 51431, B24B 100
Patent
active
051076292
ABSTRACT:
A method for texturing the surface of an acoustical fiberboard by utilizing a wheel blast machine. The fiberboard is conveyed through a housing wherein at least one first centrifugal blasting wheel throws abrasive particles at a portion of the fiberboard surface to abrade it. A blower provided in the housing removes spent abrasive particles thrown by the first wheel(s), and then at least one second centrifugal blasting wheel in the housing throws abrasive particles at the remaining untreated surface to complete the abrasion, whereby removal of the spent particles by the blower prevents masking of the surface and allows the formation of a pleasing and uniform pattern over the entire fiberboard surface.
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Boyd Alan L.
Migliorini Fred L.
Rachuba M.
The Celotex Corporation
Vanecek Charles W.
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