Abrasive tool making process – material – or composition – With synthetic resin
Patent
1984-02-06
1984-10-23
Bell, James J.
Abrasive tool making process, material, or composition
With synthetic resin
4273899, 427412, 428102, 428105, 428109, 428143, 428283, 428323, C09K 314
Patent
active
044786107
ABSTRACT:
A flexible sheet material particularly suitable as a backing for coated abrasive products and method of making same are described. The flexible sheet material is of that type employing a straight warp fabric. The yarns of the straight warp fabric are coated and at least partially impregnated with a flexible polymeric material, such as polyvinyl alcohol, having thereover an intermediate filling coat of a phenol formaldehyde resin/latex and an outer filling coat of phenol formaldehyde resin. Alternatively, the straight warp fabric includes a penetrating base coating of flexible polymeric material and thereover a backfilling including approximately equal parts by weight of calcium carbonate and magnesium carbonate dispersed in a flexible synthetic polymeric resin which backfilling fills the interstices and encapsulates the yarns of one of the yarn arrays that form the straight warp fabric. The straight warp fabric may include a non-woven web located between adjacent arrays of warp and weft yarns. The flexible sheet material described herein may be thereafter coated in conventional manner with abrasive grains to form a coated abrasive sheet material that is particularly suitable for use in the formation of endless abrasive belts.
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"The Latest Offspring of the Malims Family", Textima Information, Unitechno Aussenhandelsgesellschaft M.B.H. 7/13/78.
Parekh Dhan N.
Schweyen Paul R.
Bell James J.
Carborundum Abrasives Company
Dunn Michael L.
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