Emboss roller and method for producing surface sheet using emboss roller and absorbent article employing surface sheet

Abstract

Disclosed is an emboss roller comprising a set of a first emboss roll (11) and a second emboss roll (12) and imparting an irregularly embossed shape onto a surface sheet, wherein a reference surface (14), which has a protrusion (15) protruding outward from the reference surface (14) and a recess (16) recessed from the reference surface (14), the reference surface (14) serving as the boundary, and is smooth to the peripheries of the protrusion (15) and the recess (16), exists on the surface of the first emboss roll (11), and a reference surface (17), which has a protrusion (18) protruding outward from the reference surface (17) to mesh the recess (16) in the first emboss roll (11) and a recess (19) recessed from the reference surface (17) to mesh the protrusion (15) of the first emboss roll (11), the reference surface (17) serving as the boundary, and is smooth to the peripheries of the protrusion (18) and the recess (19), exists on the surface of the second emboss roll (12).

Description

technical field [0001] The present invention relates to an embossing roll device capable of imparting uneven embossing to a surface sheet, and an embossing roll device that provides a three-dimensional effect, has high cushioning properties, eliminates skin problems by reducing the contact area with the skin, and is excellent in shape retention of the uneven embossing A method for the manufacture of a surface sheet. Background technique [0002] Conventionally, as surface materials of absorbent articles, there are products in which appropriate embossing patterns are applied for the purpose of suppressing wetness by reducing the contact area with the skin, or for improving tactility while obtaining texture. As such a product, the following patent documents 1 and 2 are mentioned, for example. [0003] In the following patent document 1, as Figure 9 As shown, a top sheet for absorbent articles is proposed, which is a top sheet 50 for absorbent articles used on the skin-contac...

AI Technical Summary

Problems solved by technology

[0008] However, since the concavo-convex shapes of the first rollers 53, 63 and the second rollers 54, 64 for imparting concavities and convexities to the upper sheets 51, 61 constitute a gear shape, the fiber density of the portion constituting the wall surface of the convex portion is much smaller than that of other portions. Many, there is a problem of unevenness

That is, when the nonwoven fabric enters the meshing portion of the first rollers 53, 63 and the second rollers 54, 64, the nonwoven fabric is strongly moved in the MD direction (flow path direction) and the CD direction (flow path direction) due to the meshing of the gears. Orthogonal direction) stretching, the fiber density becomes thinner, and the application of tensile stress is different in the wall facing the MD direction and the CD direction, so the fiber density is different, and there is a problem that the overall fiber density is not uniform

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