Plural layered coated abrasive

Details Plural layered coated abrasive Plural layered coated abrasive

B - Operations, Transporting

24

D

57/12, 57/4

B24D 3/28 (2006.01) B24B 13/00 (2006.01) B24D 11/00 (2006.01)

Patent

CA 1283783

ABSTRACT OF THE DISCLOSURE A coated abrasive which is advantageous for cer- tain applications has at least two distinct layers of abrasive grits: a coarse outer layer and a finer in- ner layer. The median particle size of the grits in the outer layer is at least 150% of that of the inner layer grits. The grits may be adhered to the backing with adhesives compounded primarily of acrylates and cured by exposure to UV light. A product made in this way is effective for one step fining of plastic oph- thalmic lenses.

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