Layered nonwoven fabric, and method for producing layered nonwoven fabric
AssigneeUnicharm Corporation
InventorsSatoshi Mitsuno, Jun Okuda, Noritomo Kameda
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Abstract
A layered nonwoven fabric with excellent feel on the skin and liquid permeability, and a method for producing the layered nonwoven fabric. The layered nonwoven fabric includes an upper layer consisting of a first nonwoven fabric and a lower layer consisting of a second nonwoven fabric. The layered nonwoven fabric has a first surface on the first nonwoven fabric side with a plurality of protrusions and recesses and a second surface on the second nonwoven fabric side. The protrusions on the first surface have a higher basis weight than the recesses on the first surface, and the protrusions on the first surface have a lower fiber density than the recesses on the first surface.
Claims20
A layered nonwoven fabric comprising an upper layer consisting of a first nonwoven fabric and a lower layer consisting of a second nonwoven fabric,
- wherein the first nonwoven fabric and second nonwoven fabric are each composed of extendable fibers, and some of the extendable fibers of the first nonwoven fabric are tangled with some of the extendable fibers of the second nonwoven fabric,
- the layered nonwoven fabric has a first surface on the first nonwoven fabric side with a plurality of protrusions and recesses and a second surface on the second nonwoven fabric side,
- the protrusions on the first surface have a higher basis weight than the recesses on the first surface, and the protrusions on the first surface have a lower fiber density than the recesses on the first surface.
A layered nonwoven fabric formed by providing a first nonwoven fabric to be treated and a second nonwoven fabric to be treated, forming a layered nonwoven fabric to be treated by stacking the first nonwoven fabric to be treated on the second nonwoven fabric to be treated, subjecting the layered nonwoven fabric to be treated to non-homogeneous stretching so as to form a layered nonwoven fabric having high-stretch regions and low-stretch regions, placing the layered nonwoven fabric having high-stretch regions and low-stretch regions on a support, with the first surface contacting the, and blasting a sprayed fluid onto the second surface for treatment.
Dependencies are inferred from the claim text.