Washable nonwoven fabric and manufacture method

A washable nonwoven fabric, comprising:

• a base layer, having a softness coefficient of from 40 to 140, wherein the softness coefficient is tested according to method A of JIS L1096-2010 standard test;
• and
• a washable anti-pilling layer, disposed on the base layer and comprising a composition including polyurethane,
• wherein the washable anti-pilling layer is disposed on at least one surface layer or at least one inner layer of the base layer through a covalent bonding with the base layer;
• wherein the covalent bond is an amide functional group bond, an urethane functional group bond, an urea functional group bond, or a combination thereof;
• wherein the base layer has a plurality of hydroxyl groups, a plurality of carboxyl groups, a plurality of amine groups, or a combination thereof, and the polyurethane has a plurality of isocyanate groups, wherein a weight percentage of the plurality of isocyanate groups in the composition is not lower than 1.2% based on 100% by total weight of the composition;
• wherein the amide functional group bond is formed by reacting the plurality of isocyanate groups of the washable anti-pilling layer with the plurality of hydroxyl groups of the base layer;
• wherein the urethane functional group bond is formed by reacting the plurality of isocyanate groups of the washable anti-pilling layer and the plurality of carboxyl groups of the base layer;
• wherein the urea functional group bond is formed by reacting the plurality of isocyanate groups of the washable anti-pilling layer with the plurality of amine groups of the base layer.