Soft and dry double-layer composite material, preparation device and preparation method therefor and hygienic product

Abstract

A soft and dry double-layer composite material includes a bottom layer and a surface layer arranged on the bottom layer. The surface layer has an upper surface and a lower surface. The surface layer is provided with openings penetrating the surface layer. The bottom layer is provided with first protrusions protruding upwards. The first protrusions penetrate the openings respectively. A top surface of each of the first protrusions is higher than the upper surface of the surface layer. The bottom layer is made of finer fibers than the surface layer.

Dependencies are inferred from the claim text.