Patent ID: 9623540
Date: 2017-04-18
CPC Classifications: B24D,D21H,Y10T

Claim:
1. A flexible, sheet-like cleaning substrate having an abrasive surface obtained by applying an aqueous solution or dispersion of at least one precondensate of a heat-curable resin to the top and/or bottom of a flexible, sheet-like substrate in an amount of at least 5 to 90% by weight, based on the uncoated, dry substrate, crosslinking the precondensate and drying the treated substrate wherein the abrasive surface has a structure that when the abrasive surface is pushed or moved on top of another surface, the abrasive surface cleans said another surface; wherein the heat-curable resin is a precondensate of melamine and formaldehyde in which the molar ratio of melamine to formaldehyde is greater than 1:2.