Flexible backing material for use in coated abrasives

Details Flexible backing material for use in coated abrasives Flexible backing material for use in coated abrasives

1982-08-27

1984-03-20

Bell, James J.

Abrasive tool making process, material, or composition

With synthetic resin

428102, 428253, 428257, 428254, 428283, 428290, 428323, 428143, C09K 314

Patent

active

044378653

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.

REFERENCES:
patent: 2130944 (1938-09-01), Bowen
patent: 2288649 (1942-07-01), Robie
patent: 2890579 (1960-06-01), Mauersberger
patent: 3030743 (1962-04-01), Raymond
patent: 3732652 (1973-05-01), Furhal et al.
patent: 3972161 (1976-08-01), Zoiss
patent: 3991593 (1976-11-01), Bernert et al.
patent: 4215516 (1980-08-01), Huschle et al.
"The Latest Offspring of the Malimo Family", Textima Information, Unitechna Aussenhandelsgesellschaft M.B.H., 7/13/78.

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