JP2004016648A - Disposable diaper provided with absorption core - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an emboss absorption body with improved liquid diffusing property/absorbability, absorption body shape retaining property, and fitting quality/flexibility, with which a process is simplified, and also to provide an absorption article using the same. <P>SOLUTION: The absorption core includes: thick emboss at a center part in the width direction of the absorption body; and sparse emboss in the other parts. Thus, a continuous pattern is obtained in the emboss as a whole. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an embossed absorbent core, a disposable absorbent article provided with the absorbent core, a method for producing the absorbent core, and an embossing roll used for the absorbent core.
[0002]
[Prior art]
Absorbents such as disposable diapers are embossed to improve liquid diffusion / absorption and to maintain shape, but with a single embossing as a whole, sufficient absorption according to the excretion position cannot be obtained. If it is inserted too strongly, the absorber becomes hard and the feel / fitness deteriorates. If it is weak, a sufficient absorption effect cannot be obtained.
Although a line-shaped emboss is provided to improve the fit to the body shape, a process such as combining a plurality of embosses is complicated.
[0003]
[Problems to be solved by the invention]
The present invention has been made in order to solve such a problem, and an absorbent core capable of obtaining sufficient absorption in accordance with the excretion position and having good touch / fitness, a disposable diaper having the same, and a method of manufacturing the same. An embossing roll to be used for the embossing roll is provided.
[0004]
[Means for Solving the Problems]
According to the present invention, the central area, which requires large absorption / diffusion of the bodily fluid, is densely embossed, and the other left and right areas are sparsely embossed. Absorbent core and absorbent article using the same, a manufacturing method for embossing the continuous pattern with one embossing roll, and an embossing roll used for the embossing roll, detecting the position of the absorbing body The present invention relates to a device for individually embossing.
[0005]
In the present invention, a dense embossing is applied to a central portion extending from a front body, which greatly requires body fluid absorption / diffusion on the body side and / or clothing side, to a back body via a crotch part, and / or a body side and / or a clothing side. The sparse embossing is applied to the left and right corresponding portions extending from the front body to the back body through the crotch portion to the back body on the clothing side, and the embossment is formed as a continuous pattern as a whole on the entire body side and / or clothing side. And an absorbent article using the same.
[0006]
The present invention applies a dense embossed pattern over the entire length in the longitudinal direction in the center area in the left-right direction (width direction) of the absorber, and applies a sparse embossed pattern on the left-right area over the entire length in the longitudinal direction. The present invention relates to an absorbent core in which a dense embossed pattern and a sparse embossed pattern in right and left areas form one continuous embossed pattern and an absorbent article using the same.
[0007]
In the present invention, the central area of the absorber is a portion extending in the longitudinal direction corresponding to about 1/3 to 2/3 of the entire width, and the left and right areas are each extended in the longitudinal direction to extend from about 1/6 to 1/3 of the full width. The present invention relates to an absorbent core that is an extending part and an absorbent article using the same.
[0008]
The present invention relates to an absorbent core in which a dense emboss reduces the width of the emboss pitch in the width direction relative to a sparse emboss, and the sparse emboss increases the width of the emboss pitch in the width direction relative to the dense emboss. The present invention relates to an absorbent article using the same.
[0009]
The present invention relates to an absorbent core in which embosses are provided at regular intervals in the longitudinal direction and emboss pitches are set at two or more steps in the width direction and an absorbent article using the same.
[0010]
The present invention relates to an absorbent core in which the emboss pitch is set at two or more steps in the longitudinal direction, and an absorbent article using the same.
Furthermore, the present invention relates to an absorbent core having a carrier sheet such as a tissue, a non-woven cloth or the like in which the absorbent body covers the body side surface.
[0011]
The present invention relates to an absorbent core whose emboss pattern is a pattern capable of forming a continuous pattern such as an acorn (acorn) type, a lattice type, a diamond type, a honeycomb type, and an absorbent article using the same.
[0012]
Furthermore, the present invention provides an embossing device comprising an embossing roll and a receiving roll or a belt on which the desired emboss is engraved on the outer periphery, and an absorber having the same phase between the embossing roll and the receiving roll or the belt using the embossing device. And a method for producing an absorbent core for embossing a continuous pattern by passing through the core.
[0013]
Furthermore, the present invention relates to a method for producing an absorbent core in which a single embossing roll is used to emboss a continuous pattern.
[0014]
The invention also relates to an embossing roll for embossing the absorbent core for producing said absorbent core.
[0015]
The absorbent article referred to in the present invention is a general term for a tape type, a pants type, a urine absorbing pad, an incontinence pad, a sanitary product and the like.
[0016]
【The invention's effect】
(1) According to the present invention, in the absorbent core, a dense emboss is applied to a central portion in the width direction of the absorbent body, which requires large absorption / diffusion of a bodily fluid, and a sparse emboss is applied to other portions. Has a continuous pattern, so that the liquid diffusion / liquid absorption in the longitudinal direction of the absorbent core is improved, and there is an effect of preventing liquid leakage from both sides in the width direction of the absorbent core.
(2) Since the entire area of the core is embossed, the shape retention of the absorber is improved.
(3) Since the emboss is densely applied to the center area in the width direction of the absorbent core and the emboss is sparsely applied to the left and right areas in the width direction, the fit / flexibility particularly at the portion corresponding to the crotch is improved and improved.
(4) Since the embossing of the density is formed as a continuous pattern as a whole, the embossing of the absorbent core can be performed by one-pass processing using one embossing roll, so that the manufacturing process can be simplified.
[0017]
【Example】
Examples of the present invention will be described below, but they are provided for illustrative purposes and do not limit the present invention.
[0018]
[Example 1]
FIG. 1 shows an external view of a tape-fastened disposable absorbent article having an embossed absorbent core, wherein an absorbent body (1) is held between left and right three-dimensional gathers (2) and (2).
(3) is a back sheet, (4) is a top sheet, (5) is a leg gather, and (6) is a tape for fixing the tape to the top sheet surface on both sides of the back end of the absorbent article. Can be connected to the frontal tape attached to the center of the backsheet at the abdominal end when worn.
The absorbent body (1) has a continuous embossed pattern on its body side surface. The embossed part (7) has a dense central area in the width direction, and the embossed part (8) has a sparse embossed part in the left and right lateral parts. ) (8).
[0019]
[Example 2]
FIG. 2 shows an example of an embossed pattern of an acorn (acorn) type continuous pattern in FIG. 1. The central portion in the width direction is a dense emboss (7), and the left and right sides are sparse emboss (8-1). ) (8-2).
The above-mentioned absorber is composed of fluff pulp, SAP (high-absorbency polymer), a carrier sheet (tissue, non-woven cloth) wrapping the absorber or having the absorber in a sandwich structure, synthetic fibers, and the like.
A dense emboss (7) (pitch: 20 mm or less, at the center in the width direction (the vicinity of the body fluid excretion point and the longitudinal part following the front and back thereof) where the embosses (7) and (8) require large absorption / diffusion of bodily fluids, (Preferably 5 to 15 mm and an area ratio of 10% or more, preferably 15 to 30%), for the purpose of absorption / storage on the right and left sides, and a sparse emboss (8) (pitch having a pitch By applying 20 mm or more, preferably 30 to 80 mm, and the area ratio is 10% or less, preferably 3 to 5%, the absorption performance, flexibility, and shape retention of the absorber can be improved.
An intermediate having a continuously variable pitch and area ratio may be provided between the dense emboss and the coarse emboss.
The present invention can be applied not only in the width direction of the absorber but also in the longitudinal direction in some cases.
The dense embossed central area is preferably about 1/3 to 2/3 of the entire width of the absorber.
[0020]
[Example 3]
FIG. 3 shows an embossing step and a processing step in the production of the absorbent core.
In the embossing step, the embossing roll (9) and the receiving roll (10) (the receiving roll may be engraved on the surface) or the absorber (11) in which the phases are matched with each other are preferably engraved on the outer periphery. (1) The continuous embossing described above is performed by passing through (the absorber may be wrapped with a carrier sheet or the like).
Next, a surface material (12) and a back surface material (13) are laminated on the absorber (1) embossed in the processing step to obtain a product.
The embossed absorbent product is then processed into pads and diapers.
[0021]
[Example 4]
The emboss pattern applied to the absorber is limited to a pattern capable of forming a continuous pattern such as an acorn (acorn) type, a lattice type, a diamond type, a honeycomb type, and the like. Dots such as dots with discontinuous embossing are not preferred because liquid diffusion is hindered at that portion. In addition, the effect on the shape retention is not so large.
[Brief description of the drawings]
FIG. 1 is an external view of a tape-stop type disposable diaper having an embossed absorbent core.
FIG. 2 is an exemplary view of an emboss pattern.
FIG. 3 is an exemplary view showing a manufacturing process of the absorbent core.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Absorber 2 ... Solid gather 3 ... Back sheet 4 ... Top sheet 5 ... Leg gather 6 ... Tape fixing tape 7 ... Dense emboss 8 ... Sparse emboss 8-1 ... Left sparse emboss 8-2 ... Sparse emboss 9 on right side Emboss roll 10 Receiving roll 11 Receiving belt 12 Front surface material 13 Back surface material

Claims (13)

An absorbent core, wherein a dense emboss is applied to a central area of the absorber, and a sparse emboss is applied to left and right areas, respectively, and the emboss has a continuous pattern as a whole. 2. The absorbent core according to claim 1, wherein the emboss is provided on the entire body side and / or the clothing side of the absorbent body. 3. The absorbent body according to claim 1, wherein the central area of the absorber is a central part extending from the front body to the rear body through the crotch part, and the left and right areas are two side equivalent parts extending from the front body to the rear body through the crotch part. core. 4. The dense embossing device according to claim 1, wherein the embossing pitch in the width direction is smaller than that of the sparse embossing, and the sparse embossing is one in which the embossing pitch in the width direction is larger than the dense embossing. An absorbent core according to any one of the preceding claims. The absorbent core according to any one of claims 1 to 4, wherein the embosses are provided at regular intervals in the longitudinal direction, and the emboss pitch is set in two or more steps in the width direction. The absorbent core according to any one of claims 1 to 4, wherein the emboss pitch is set at two or more steps in the longitudinal direction. The absorbent core according to any one of claims 1 to 6, wherein the emboss pattern is a pattern capable of forming a continuous pattern such as an acorn (acorn) type, a lattice type, a diamond type, and a honeycomb type. The absorbent core according to any one of claims 1 to 7, wherein the absorbent body has a carrier sheet such as a tissue or a non-woven cloth covering the body side surface. An absorbent article using the absorbent core according to any one of claims 1 to 8. An embossing device for an absorbent core comprising an embossing roll having a desired embossment engraved on its outer periphery and its receiving roll or belt. The absorption according to any one of claims 1 to 8, wherein the desired embossing is applied between the embossing roll engraved on the outer periphery and the receiving roll or belt through a phase-matched absorber to emboss the continuous pattern. Core manufacturing method. The method for producing an absorbent core according to claim 11, wherein the embossing of the continuous pattern is performed by one embossing roll. An embossing roll used in the method for producing an absorbent core according to claim 11.

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