NONWOVEN FABRIC AND PRODUCTION METHOD FOR NONWOVEN FABRIC

摘要

Provided are a nonwoven fabric that contains thermally expandable particles and has high bulk and high strength and a production method for said nonwoven fabric. The production method for nonwoven fabric of the present invention comprises: a step (12) in which a first raw paper material containing fibers and water is supplied on a belt and formed on the belt into a first paper layer; steps (13 14) in which a stream of high pressure water is sprayed on the first paper layer in order to form groove sections on the surface of the paper layer that extends in the machine direction; steps (16 17) in which a second raw paper material containing fibers thermally expandable particles and water is made into a sheet in order to form a second paper layer; steps (15 17) in which a third paper layer is formed by stacking the first paper layer and the second paper layer; a step (19) in which the third paper layer is dried; and steps (20 21) in which high pressure steam is sprayed on the third paper layer in order to cause the thermally expandable particles to expand. The nonwoven fabric of the present invention has a plurality of groove sections that extend in the longitudinal direction and that are lined up in the lateral direction and is provided on one surface thereof with a first layer comprising fibers and on the other surface thereof with a second layer comprising fibers and thermally expandable particles that have expanded.