Foam coating grinding tool and preparing method thereof

[0034]A kind of coated foam abrasive tool, comprising latex paper base layer, ethylene-vinyl acetate copolymer hot melt adhesive type primer layer and a foam layer with a thickness of 1mm, the foam layer is obtained by foaming ethylene-vinyl acetate copolymer resin liquid The silicon carbide abrasive used for grinding is evenly embedded in the resin foam;

[0035] The preparation method of above-mentioned coated foam abrasive tool, comprises the following steps:

[0036] 1. Substrate pretreatment: Latex paper can be used directly as a substrate;

[0037] 2. Primer: Ethylene-vinyl acetate copolymer hot-melt adhesive can be cast on the latex paper substrate through a hot-melt machine to form a primer layer;

[0038] 3. Casting and foaming: the foam layer is obtained by mixing ethylene-vinyl acetate copolymer resin and silicon carbide abrasive and then casting and foaming;

[0039] First, prepare the foam layer slurry by mass parts by 100 parts of ethylene-vinyl acetate copolymer

[0044] A coated foam abrasive tool, comprising a kraft paper base layer, a polyisobutylene rubber hot-melt adhesive primer layer and a foam layer with a thickness of 1 mm, the foam layer is obtained by foaming an ethylene-vinyl acetate copolymer resin solution, and can be used for grinding The active silicon carbide abrasive is evenly embedded in the resin foam;

[0045] The preparation method of above-mentioned coated foam abrasive tool, comprises the following steps:

[0046] 1. Substrate pretreatment: kraft paper is used as a substrate after waterproofing;

[0047] 2. Primer: Polyisobutylene rubber hot-melt adhesive can be cast on the kraft paper substrate through a hot-melt machine to form a primer layer;

[0048] 3. Casting and foaming: the foam layer is obtained by mixing ethylene-vinyl acetate copolymer resin and silicon carbide abrasive and then casting and foaming;

[0049] First, prepare the foam layer slurry, by mass parts, 100 parts of ethylene-vinyl acetate copolym

[0054] A coated foam abrasive tool, comprising a polyester film base layer, a polyester hot-melt adhesive primer layer and a foam layer with a thickness of 3mm, the foam layer is obtained by foaming polyvinyl alcohol resin liquid, and plays a grinding role Silicon carbide abrasive is evenly embedded in the resin foam;

[0055] The preparation method of above-mentioned coated foam abrasive tool, comprises the following steps:

[0056] 1. Substrate pretreatment: polyester film can be used directly as a substrate;

[0057] 2. Primer: Polyester hot-melt adhesive can be cast on the substrate by a hot-melt machine to form a primer layer;

[0058] 3. Casting and foaming: the foam layer is obtained by mixing polyvinyl alcohol resin and silicon carbide abrasives and then casting and foaming;

[0059] First, prepare the foam layer slurry, by mass parts, 100 parts of polyvinyl alcohol resin, 80 parts of N,N-dimethylformamide, 0.01 part of sodium dodecylbenzene sulfonate antistatic agent,