Process for removing coatings from hard surfaces
AssigneeChurch & Dwight Co., Inc.
InventorLawrence Kirschner
Life of this patent
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Abstract
A process for removing coatings from hard surfaces includes blasting the surfaces with a free-flowing particulate blast media entrained in a pressurized fluid, the blast media containing a major amount of relatively soft granular abrasive particles which have a Mohs hardness of less than 4.0 and a minor amount of free-flowing, separate relatively hard granular abrasive particles which have a hardness of greater than 5.0 on the Mohs scale, the granular abrasives having a particle size of from about 10 to about 2000 microns and being devoid of crystalline silica material.
Claims10
A process for removing coatings from hard surfaces comprising blasting said surfaces with a free-flowing particulate blast media entrained in a pressurized fluid, said blast media comprising a major amount of relatively soft granular abrasive particles which have a Mohs hardness of less than 4.0 and a minor amount of free-flowing, separate relatively hard granular abrasive particles which have a hardness of greater than 5.0 on the Mobs scale, said granular abrasives having a particle size of from about 10 to about 2000 microns and being devoid of crystalline silica material.
Dependencies are inferred from the claim text.