Abrasive material and process for manufacturing the same

Details Abrasive material and process for manufacturing the same Abrasive material and process for manufacturing the same

1977-09-29

1979-11-27

Lawrence, Evan K.

Abrasive tool making process, material, or composition

Laminating

34 24, 34160, 51298, 260 293, 427177, 427179, 427205, 427374A, 427378, 427380, B24D 328

Patent

active

041759311

ABSTRACT:
An abrasive material and process for manufacturing the same. The process comprises: (i) applying a basic binder layer to a flexible support; (ii) scathering abrasive particles onto the basic binder layer; (iii) drying and subsequently cooling the resultant product; (iv) applying a second binder layer as a sizer to the cooled product of step (iii); (v) drying and cooling the sizer; (vi) loosely rolling up the product of step (v); and (vii) curing and subsequently cooling the product of step (vi) by passing a heating or cooling air stream substantially axially through the rolled-up product. The basic and second binder layers each comprise an aqueous mixture of (A) at least one predominantly ortho-structural resol having a molar ratio of phenolic component to formaldehyde of from 1:(1.1 to 2.5), and (B) at least one polyvinyl alcohol in an amount of from 5 to 30% by weight based on the weight of solid phenolic resin.

REFERENCES:
patent: 1530873 (1925-03-01), Williams
patent: 1962603 (1934-06-01), Lovell
patent: 2736107 (1956-02-01), Dungler
patent: 2890948 (1959-06-01), Fantl et al.
patent: 3607598 (1971-09-01), Le Blanc et al.
patent: 3619150 (1971-11-01), Rinker et al.

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