| 摘要 |
There is provided a nonwoven fabric comprising heat-expanding particles, having bulk and high strength, and a method for producing the nonwoven fabric. The method of producing a nonwoven fabric according to the invention comprises a step of supplying a first sheet-forming material comprising fiber and water onto a belt, to form a first sheet layer on the belt (12), a step of spraying a high-pressure water jet onto the first sheet layer to form grooves extending in the machine direction on the surface (13, 14), a step of forming a second sheet-forming material comprising fibers, heat-expanding particles and water into a sheet to form a second sheet layer (16, 17), a step of layering the first sheet layer and the second sheet layer to form a third sheet layer (15, 17), a step of drying the third sheet layer (19), and a step of spraying high-pressure steam onto the third sheet layer to expand the heat-expanding particles (20, 21). The nonwoven fabric of the invention is provided with a fiber-containing first layer having a plurality of grooves extending in the longitudinal direction and aligned in the transverse direction, on the first surface, and is provided with a second layer comprising expanded heat-expanding particles and fibers, on the second surface. |
