TW201711653A - Individual package for absorbent article - Google Patents

Abstract

The present invention provides an individual package for an absorbent article, whereby a folded shape is easily formed and the individual package also readily returns to a planar shape. This individual package for an absorbent article is configured as described below. An individual package (1) for a napkin (2) is formed by folding a napkin (2) provided with an absorbent body (9) and having a longitudinal direction and a width direction together with a packaging sheet (3) at a folding line region (5) extending in the width direction, the absorbent body (9) has a one surface and another surface, the individual package (1) is provided with at least one slit part (12) formed by making a cut in the folding line region (5) from the one surface partway through the absorbent body (9) in the thickness direction thereof, the slit part (12) has an opening extending in the width direction in the one surface, and the absorbent body (9) is provided with a high-density part (15) in a position overlapping with at least the slit part (12) in the thickness direction of the absorbent body (9), the high-density part (15) being high-density in comparison with a portion not overlapping with the slit part (12) in the thickness direction of the absorbent body (9).

Description

Packing of absorbent articles

The present invention relates to a package of an absorbent article.

There is a package in which a sanitary napkin as an absorbent article is placed on a packaging sheet and folded by a plurality of times to individually wrap the sanitary napkin. By arranging the absorbent articles in this manner, the absorbent article can be carried in a state where it can be easily and hygienically transported.

For example, Patent Document 1 discloses a package body of an absorbent article in which a package body having a surface material and a back material and an absorbent article interposed between the absorbent members of the two materials is folded along a package fold line, wherein a circumferential leakage preventing groove is formed on the surface material side of the absorbent article, and the circumferential leakage preventing groove has a narrowed portion that enters the circumference in a plan view at a position of the plurality of packaging fold lines. And an arcuate central groove extending in a width direction substantially parallel to the plurality of package fold lines on the inner side of the circumferential leak preventing groove, and having the narrowed portion and the individual package fold line in a region having the central groove.

Patent Document 2 describes an absorbent article comprising a liquid retaining absorbent body and a skin facing surface side of the absorbent body. The surface sheet and the inner sheet disposed on the non-skin opposing surface side of the absorbent body, and an absorbent main body having an excretion portion opposing portion disposed opposite to the drain portion of the wearer when installed The excretion portion opposing portion is disposed on the front side of the wearer's abdominal side, and the excretion portion opposing portion is disposed on the rear side of the wearer's back side, and has a capacity equivalent to the installer. The longitudinal direction of the front-rear direction and the transversely-oriented absorbent article, wherein the inner sheet has moisture permeability, and the absorber is formed of a laminate of absorbent sheets, and has an excretion at the opposite portion of the excretion portion. a region in which the slit formed to penetrate the absorbent sheet closest to the surface sheet is dispersed in both the longitudinal direction and the lateral direction, and the absorbent body has a plurality of layers in the opposing portion of the drain portion The multi-layered portion is a portion in which the number of laminated sheets of the absorbent sheet is larger than the portion around the absorbent sheet, and the multi-layered portion has a through slit which penetrates the absorbent body as the slit, and many The outer peripheral edge portion is located, the number of laminated sheet having an absorbent sheet of the absorbent sheet layer closest to the surface of the sheet through the multilayer portion less the portion not penetrating through the absorbent member through the slit.

[Advanced technical literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2010-178932

[Patent Document 2] Japanese Patent Laid-Open No. 2015-024000

In the package of the absorbent article disclosed in Patent Document 1, the absorbent article has an arcuate central groove extending in the width direction thereof and a fold line of the package body formed in the region having the central groove. And extending substantially parallel to the central groove. Therefore, in the absorbent article of Patent Document 1, the rigidity of the center groove and the other portions is poor, and it is easy to be folded at the center groove. On the other hand, in the absorbent article of Patent Document 1, when the center groove is welded to the sheet positioned at the upper and lower positions, the sheet is plastically deformed. Therefore, when the user opens the package and expands the absorbent article into a planar shape. When the folded shape is maintained and the center groove is not welded to the sheet positioned at the upper and lower positions thereof, peeling occurs in the layer to cause wrinkles. Therefore, even in any case, it is difficult to form a flat shape when it is used. As a result, in the absorbent article of Patent Document 1, the feeling of attachment is poor, and liquid such as menstrual blood tends to leak easily.

Moreover, the absorbent article disclosed in Patent Document 2 has a plurality of slits extending in the longitudinal direction (long direction) or the lateral direction (widthwise direction), but when it has a longitudinal slit, it is not folded into a package. In the case of the bending point of the form, the position of the folding line tends to be deviated, and the absorbent article described in Patent Document 2 is easy to fold in the width direction of the absorbent article with the slit as the axis. There is a tendency that the liquid easily leaks from the twisted absorbent article. Further, when there is a slit in the lateral direction, if the rigidity of the absorbent article is too low, even if the package is to be opened, the absorbent article is to be in a folded shape, and the user must perform the absorbent article before loading. Revert to a flat shape job.

An object of the present invention is to provide a package body of an absorbent article which is easy to form a folded shape and which is easy to return to a planar shape, and which improves the mounting feeling in the fold line region and which does not easily leak liquid.

The present inventors have found a package body of an absorbent article having a long direction and a wide width direction, and a fold line region extending in the above-mentioned wide direction is folded by the absorbent article having the absorbent body together with the packaging sheet In the package body of the absorbent article to be formed, the absorbent body has one surface and the other surface, and at least one or more of the folding line regions are cut into the absorbent body from the one surface. a slit portion formed in the middle of the thickness direction, wherein the slit portion has an opening portion extending in the width direction on the one surface, and the absorber is at least overlapped with the slit portion in a thickness direction of the absorber The position is provided with a high-density portion as compared with a portion where the slit portion does not overlap in the thickness direction of the absorber.

In the absorbent article according to the package of the present invention, at least one or more slit portions are provided in the fold line region, and the slit portion is provided in the width direction of the absorbent body, and is provided in the fold line region of the absorbent body. The portion having the slit portion is inferior in rigidity to the portion other than the slit portion, and when folded into a package form, the slit portion becomes a starting point of bending, and the folded shape is easily formed. Further, the slit portion is formed only in the middle of the thickness direction of the absorbent body, and since a continuous region in the longitudinal direction exists, the force (restoring force) returning to the planar shape acts easily and returns to the planar shape. Furthermore, the absorption of the present invention Since the article has a high-density portion at least at a position overlapping the slit portion in the thickness direction of the absorber, the rigidity is poor between the high-density portion and the peripheral portion thereof, and the high-density portion is folded into a package form. It becomes a starting point of bending and is easy to form a folded shape. Further, in the high-density portion, since the rigidity of the portion in the position where the slit portion overlaps with the thickness direction of the absorber is increased, the force (restoring force) returned to the planar shape acts easily and returns to the planar shape. As described above, the absorbent article in the package of the present invention has both the slit portion and the high-density portion, and therefore has both the ease of forming the folded shape and the ease of returning to the planar shape.

The package of the absorbent article of the present invention is easy to form a folded shape and is also easily returned to a planar shape.

1, 1'‧‧‧ packages

2, 2'‧‧‧ sanitary napkins

3‧‧‧Packing sheets

4‧‧‧ tongue

5‧‧‧Dash line area

6a, 6b‧‧‧ side flakes

7‧‧‧Surface

8‧‧‧Inside sheet

9, 9' ‧ ‧ absorbers

10‧‧‧ Covered sheets

11‧‧‧ Pressing Ditch

12, 12’‧‧‧ slitting

13‧‧‧ Fixed Department

14‧‧‧ recess

15‧‧‧High Density Department

Fig. 1 is a plan view showing a state in which a package according to a first embodiment of the present invention is developed.

FIG. 2 is a plan view of the absorbent article of the package according to the first embodiment of the present invention.

3 is a plan view of an absorbent body and a coated sheet used in the absorbent article of the package of the first embodiment of the present invention.

Fig. 4 is a partial end view showing the IV-IV end faces of the absorbent body and the coated sheet shown in Fig. 3;

Fig. 5 is a partial end view showing the V-V end faces of the absorbent body and the coated sheet shown in Fig. 3;

Fig. 6 is a perspective view showing a state in which a package according to the first embodiment of the present invention is folded in a fold line region.

Fig. 7 is a perspective view showing a state in which the individual packages of the first embodiment of the present invention are folded in the full-fold line region.

Fig. 8 is a partial cross-sectional view showing a state in which a package body according to the first embodiment of the present invention is folded in a fold line region.

Fig. 9 is a plan view of an absorber of a package according to a second embodiment of the present invention.

[Formation for carrying out the invention]

The present invention relates to the following aspects.

[Scenario 1]

A package body of an absorbent article having a long direction and a wide direction, and a fold line region extending in the wide direction is formed by folding an absorbent article having an absorbent body together with a packaging sheet. In the package of the article, the absorbent body has one surface and the other surface, and at least one or more of the fold line regions are formed by cutting from one surface to the thickness direction of the absorber. In the slit portion, the slit portion has a width in the width direction on the one surface In the opening portion, the absorbent body is provided with a high-density portion at a position overlapping with the slit portion in the thickness direction of the absorbent body at least at a position where the slit portion does not overlap in the thickness direction of the absorbent body. .

In the package of the absorbent article of the first aspect, at least one or more slit portions are provided in the fold line region, and the slit portion is provided in the width direction of the absorbent body in the fold line region of the absorbent body. When the portion where the slit portion is provided and the other portion are inferior in rigidity, when the sheet is folded into a package form, the slit portion becomes a starting point of bending, and the folded shape is easily formed. Further, the slit portion is formed only in the middle of the thickness direction of the absorbent body, and since a continuous region in the longitudinal direction exists, the force (restoring force) returning to the planar shape acts easily and returns to the planar shape. In addition, since the absorbent article of the present invention has a high-density portion at least at a position overlapping the slit portion in the thickness direction of the absorbent body, the rigidity difference between the high-density portion and the peripheral portion thereof is generated, and folded into a single piece. In the package form, the high-density portion becomes a starting point of bending, and it is easy to form a folded shape. In addition, since the high-density portion increases the rigidity of the portion in the position where the slit portion overlaps in the thickness direction of the absorber, the force (restoring force) returned to the planar shape acts easily and returns to the planar shape. In the absorbent article of the package of the present invention, since the slit portion and the high-density portion are provided at the same time, the effect of both the ease of forming the folded shape and the ease of returning to the planar shape can be achieved. .

[Surface 2]

In the above package, the one surface is the skin facing surface.

In the package of the absorbent article according to the second aspect, since the slit portion is formed on the skin facing surface side, the absorbent body is easily folded, and the portion where the slit portion is not formed is turned sideways toward the skin non-opposing surface. Therefore, the force (restoring force) that returns to the planar shape in the opposite direction to the direction in which the absorbent body is folded can further improve the feeling of attachment in the polygonal line region.

[Surface 3]

In the above package, the slit portion has a depth of 70% or less of the thickness of the absorber.

In the package of the absorbent article according to the third aspect, since the portion where the slit portion is not formed accounts for 30% or more of the thickness of the absorbent body, the force (restoring force) for returning the planar shape sufficiently acts, and the fold line region can be further improved. Installation feeling.

[Surface 4]

In the above-described package, the absorbent body is formed in the thickness direction of the absorbent body from the other surface at a position overlapping the slit portion in the thickness direction of the absorbent body. The recess in the middle.

In the package of the absorbent article according to the fourth aspect, since the concave portion is provided at a position overlapping the slit portion in the thickness direction of the absorbent body, the difference in rigidity between the portion and the other portion is increased, and the package is folded into a package form. At this time, the slit portion and the concave portion become the starting point of the bending, and it is easier to form the folded shape.

[Surface 5]

In the above package, the high-density portion is formed from the outer circumferential surface of the concave portion to the middle of the thickness direction of the absorbent body.

In the package of the absorbent article according to the fifth aspect, since the high-density portion is formed from the outer peripheral surface of the concave portion to the middle of the thickness direction of the absorbent body, when the absorbent body is folded, the high-density portion is elongated and returned to the planar shape. Force (resilience) works further.

[Figure 6]

In the above-described package, the plurality of packages are formed by folding the absorbent article and the packaging sheet a plurality of times in a plurality of the fold line regions, and the absorbent body has at least one or more in each of the polygonal line regions. The aforementioned slit portion.

In the package of the absorbent article according to the sixth aspect, when there are a plurality of the fold line regions, at least one slit portion is provided in each region, and the absorbent body is easily folded in any of the fold line regions.

[Stage 7]

In the above-described package, the absorbent body includes a plurality of the slit portions intermittently arranged in the width direction in the fold line region.

In the package of the absorbent article according to the seventh aspect, the other slit portions in the fold line region are discontinuously extended on the extension line of the slit portion. Therefore, a region where the slit portion is not formed is formed on the same line, and the rigidity of the absorber is maintained more than when the slit portion crosses the width direction.

[Surface 8]

In the above-mentioned absorbent article, the absorbent article is provided with a garment contacting surface of the absorbent article, that is, a non-folding region other than the folding line region, and the garment for fixing the absorbent article to the wearer. The fixed part used.

In the package of the absorbent article according to the eighth aspect, when the absorbent article is folded, the fold line region fixing portion on the non-opposing surface side of the absorbent article does not exist, so that the absorbent body does not hinder the return to the absorbent body. The force of the planar shape (resilience).

[Surface 9]

In the above package, the opening has a curved shape that protrudes toward an end portion in the longitudinal direction.

In the package of the absorbent article according to the aspect 9, the fold line is a line segment connecting the both ends of the slit portion or a portion formed in the convex portion, and the absorbent body is more easily folded.

Hereinafter, a suitable embodiment of the absorbent article of the present invention will be described in detail with reference to the drawings.

(First embodiment)

1 to 5 are views for explaining the first embodiment of the present invention. FIG. 1 is a plan view showing a state in which a package 1 is unfolded. As shown in FIG. 1, when the package 1 is unfolded from the folded state, it has a vertically long shape in plan view, and the shape has a long direction D _L and a width direction D _W orthogonal to the long direction D _L . . Each of the packages 1 is composed of various members including a sanitary napkin 2, a packaging sheet 3, and a tongue piece 4 as absorbent articles. The sanitary napkin 2 and the packaging sheet 3 each have a fold line region 5 in the D _W direction at a position overlapping in the thickness direction, and are sequentially folded inward in the fold line region 5 as will be described later, and are packaged into a package by the tongue piece 4 Body 1.

In addition, although FIG. 1 shows that there are two fold line regions 5, the sanitary napkin 2 is folded into three, but depending on the storage method of the sanitary napkin 2, the fold line region 5 may have three or more positions, and the position of the fold line 5 may be formed. It can be changed as appropriate. Further, in the folding line region 5, the distance from the fold line of the sanitary napkin 2 to the first end portion in the wide direction, and the distance from the fold line of the sanitary napkin 2 to the second end portion in the wide direction is the same as that of the absorbent body 9. The same length of the thickness, the fold line region 5 is a region surrounded by the first end portion and the second end portion.

Further, in the present specification, the thickness (mm) of the absorbent body is measured by the following method.

FS-60DS [measuring surface 44mm (diameter), measuring pressure 3g/cm ² ] manufactured by Daiei Scientific Seiki Co., Ltd., and in the standard state (temperature 23±2°C, relative humidity 50±5%), absorption The five different parts of the body were pressurized, and the thickness after pressing for 10 seconds in each part was measured, and the average value of the five measured values was made into the thickness of the absorber.

Fig. 2 is a plan view of the sanitary napkin 2 of the package 1 according to the first embodiment of the present invention. As shown in FIG. 2, the sanitary napkin 2 has a vertically long shape in plan view, and has a longitudinal direction D _L and a width direction D _W orthogonal to the longitudinal direction D _L . The sanitary napkin 2 includes a pair of left and right liquid-impermeable side sheets 6a and 6b positioned on the skin side of the wearer; and a non-woven fabric on the side of the side sheets 6a and 6b. a liquid-permeable surface sheet 7 formed of a liquid-permeable plastic film or the like; a liquid-impermeable back sheet 8 positioned on the side of the garment (that is, opposite to the skin-facing side); at the surface sheet 7 and an absorbent body 9 for absorbing a body fluid such as menstrual blood between the inner sheet 8 and a liquid permeable covering sheet 10 which at least partially covers the absorbent body 9 between the surface sheet 7 and the absorbent body 9 It consists of various components.

Further, as shown in FIGS. 1 and 2, a substantially annular press groove 11 is formed in the sanitary napkin 2. The press groove 11 is formed by pressing the surface sheet 7, the covering sheet 10, and the absorber 9 in the thickness direction. In the present embodiment, the press groove 11 is formed by pressing the skin facing surface of the surface sheet 7 of the sanitary napkin 2 and the skin non-opposing surface of the absorbent body 9.

Further, the press groove 11 may not be annular, and one or more linear portions may be formed at both end portions in the width direction D _w of the sanitary napkin 2 in a portion overlapping the absorbent body 9 in the thickness direction. However, it is preferable that the press groove 11 is substantially orthogonal to the slit portion 12 in the plan view as will be described later in the fold line region 5. Here, substantially orthogonal means that the angle formed by the slit portion 12 and the press groove 11 in the fold line region 5 is not only a right angle (90°) in plan view, but also includes, for example, an angle of 45° or more and less than 90°. Case.

The absorbent body and the coated sheet used in the sanitary napkin according to the first embodiment of the present invention will be described in detail with reference to the drawings. 3 is a plan view of the absorbent body 9 and the covering sheet 10 used in the absorbent article (sanam 2) according to the first embodiment of the present invention, and FIG. 4 is an IV of the absorbent body 9 and the covering sheet 10 shown in FIG. Partial end view in the -IV end face. Fig. 5 is a partial end view showing the VV end faces of the absorbent body and the coated sheet shown in Fig. 3; As shown in Fig. 3, in the present embodiment, the absorbent body 9 and the covering sheet 10 have a vertically long shape which is long in the direction in which the longitudinal direction D _{L of the} sanitary napkin 2 coincides.

In the present embodiment, the absorbent body 9 may be a fibrous structure in which the superabsorbent polymer is dispersed and held in the pulp-containing material, and the absorbent body used in the absorbent article of the present invention may have a body fluid that absorbs and retains menstrual blood or the like. The function is not particularly limited, and any absorbent material such as a nonwoven fabric can be used in addition to the dispersion of the superabsorbent polymer in the above-described fibrous structure containing the pulp. Further, in the case of the absorbent body, the above-mentioned absorbent material is compressed by pressing or the like, and since the absorbent body has high rigidity, the absorbent body is not easily broken during use of the sanitary napkin, and therefore it can be suitably used.

In the absorbent article of the present invention, the base of the absorbent body is not particularly limited as the absorbent body of the absorbent article as long as it is within the range of the base amount generally used.

Further, in the present embodiment, polyolefin-based fibers (for example, polyethylene, polypropylene, etc.) or polyester fibers can be used as the coated sheet 10. A liquid-permeable sheet such as a non-woven fabric formed of synthetic fibers such as polyethylene terephthalate or the like, the coated sheet used in the absorbent article of the present invention may be allowed to permeate body fluid such as menstrual blood. There is no particular limitation, and any sheet material such as a plastic film or a woven fabric may be used in addition to the above-mentioned nonwoven fabric.

When the coated sheet is formed of a fiber structure such as a nonwoven fabric or a woven fabric, the basis weight of the fiber structure is not particularly limited as long as it is applied to an absorbent article within a range of a base amount generally used. Further, the thickness of the coated sheet is not particularly limited, but is preferably 0.1 mm to 5.0 mm, more preferably 0.2 mm to 2.0 mm.

In the present embodiment, at least a part of the covering sheet 10 is joined to the absorber 9 by any adhesive such as a heat-fusible material. The absorber 9 and the cover sheet 10 are joined via an adhesive. When the napkin 2 is used, the absorber 9 and the cover sheet 10 are less likely to be broken as a starting point. Further, in the absorbent article of the present invention, since the absorbent body and the coated sheet are integrated, a pressing means such as embossing or the like may be used in combination with the above-mentioned adhesive. In particular, when embossing is used integrally with the absorbent body and the coated sheet, the plurality of press portions formed by pressing the absorbent body and the coated sheet by a plurality of embossed pins are joined, so that the absorbent body is The separation from the coated sheet causes the absorbent body to be twisted or broken, and the press portion having a high fiber density is formed at a plurality of places, so that the rigidity of the absorbent body is increased, and the absorbent body is broken due to the use of the sanitary napkin. The situation is not easy to happen.

In the present embodiment, the coated sheet 10 is disposed on the surface. The coated sheet used in the absorbent article of the present invention may be disposed between the sheet 7 and the absorbent body 9 as long as it is at least partially covered with the absorbent body, and may be disposed in accordance with desired absorption performance, rigidity, and the like. In any position, for example, the coated sheet can be disposed around the entire absorbent body even if it is disposed between the absorbent body and the inner sheet.

Further, in the present embodiment, the sanitary napkin 2 is provided with the structure of the covering sheet 10, but the covering sheet is not an essential component. For example, when the absorbent body itself has sufficient rigidity, the sanitary napkin may have a configuration in which the covering sheet is removed.

In addition, the absorbent body 9 and the covering sheet 10 to be joined are formed in the fold line region 5, and the through-coated sheet 10 is formed on the skin facing surface from the surface that is in contact with the covering sheet 10 to the absorbent body 9. The slit portion 12 in the middle portion of the thickness direction D _T has an opening portion extending in the width direction. As shown in FIG. 3, in the first embodiment of the present invention, the slit portion 12 is disposed substantially in the plan view of the cross-over body 9 and the covering sheet 10. In the present embodiment, each of the slit portions of the plurality of slit portions 12 is viewed in a plan view, and is perpendicular to the longitudinal direction of the absorbent body 9 and the coated sheet 10 (that is, the longitudinal direction D _{L of the} sanitary napkin 2), that is, The width direction D _{w of} the sanitary napkin 2 extends in a direction parallel to the direction. Further, the slit portion 12 and the non-slit portion 120 alternately exist on the same line in the wide direction.

In the absorbent article of the present invention, the length of the slit portion is not particularly limited, but is preferably 3 mm to 50 mm, more preferably 5 mm to 15 mm. When the length of the slit portion is 3 mm or more, the rigidity of the absorber is lowered, and the absorber can be easily folded. On the other hand, when the length of the slit portion is 50 mm or less, a portion where the slit portion is not formed is left at the end portion in the wide direction of the absorbent body, and the restoring force at the time of unfolding from the state in which the absorbent article is folded can be exhibited, and When the absorbent article is used, the absorbent body can maintain rigidity to such an extent that it can withstand the pressure in the width direction D _W . However, considering the easy folding property of the absorbent article in the fold line region, the ratio of the length of the absorbent body in the width direction occupying the total length of the slit portion on the same line in the width direction is preferably 30 to 80%. More ideally, it is 40~70%, and more ideally 50~60%.

As shown in FIG. 4 and FIG. 5, in the present embodiment, the slit portion 12 is formed in the thickness direction D _T of the absorbent body 9 from the surface of the skin facing surface through which the covering sheet 10 is in contact with the covering sheet 10 section.

The depth of the slit portion of the absorbent body in the present invention is not particularly limited, but may be, for example, 0.05 mm to 5.0 mm, and more preferably 0.1 mm to 3.0 mm, from the viewpoint of ease of folding of the absorbent article. Further, the thickness of the slit portion is 70% or less of the thickness of the absorber, or may be half or less of the thickness of the absorber.

Further, in the present specification, the depth of the slit portion means the distance between the plane along the surface having the slit portion side and the deepest portion in the slit portion, specifically, the following measurement method. depth. (1) The absorber and the covered sheet (hereinafter referred to as "absorber or the like") having the slit portion are cut in a plane perpendicular to the direction in which the slit portion extends. (2) Observing the cross section of the absorber or the like after cutting with an electron microscope such as a scanning electron microscope, and measuring the position at an arbitrary two adjacent The thickness (mm) of the portion of the thickest portion between the slits (hereinafter referred to as the "thickest portion"). (3) The thickness (mm) of the thickest portion at any ten places was measured, and the average value thereof was taken as the thickest portion average thickness (mm). (4) When an electron microscope photograph or an image is used, the surface opposite to the surface having the slit portion such as the absorber is used as the lower side, and when the absorber or the like is placed on the horizontal plane, the plane formed by the portion contacting the horizontal plane is assumed to be The imaginary bottom surface is assumed to be a virtual reference surface on a plane parallel to the imaginary bottom surface, and a plane at a position from the bottom surface that coincides with the average thickness of the thickest portion is assumed, and the imaginary reference surface is measured to the deepest portion of the slit portion. Distance (mm). (5) For any ten slit portions, the distance (mm) from the virtual reference surface to the deepest portion of the slit portion is measured, and the average value thereof is defined as the depth (mm) of the slit portion.

Further, in the present embodiment, each of the slit portions of the plurality of slit portions 12 extends in a direction parallel to the width direction _{Dw of} the sanitary napkin 2 in plan view. When a plurality of slit portions are extended in such a direction, the absorbent body is easily bent toward the longitudinal direction D _{L of} the sanitary napkin 2, and is easily folded in the fold line region 5.

As shown in FIG. 3, in the present embodiment, the plurality of slit portions 12 are arranged substantially in a staggered manner in a substantially uniform view across the absorbent body 9 and the covering sheet 10. Further, the plurality of slit portions 12 are discontinuously extended in the slit line 12 on the extension line of the slit portion in a plan view, that is, intermittently disposed in the width direction of the absorber 9. When a plurality of slit portions are disposed in this manner, the region where the rigidity of the absorbent body slit portion 12 is not high is not continuously formed in the longitudinal direction D _L of the sanitary napkin 2, so that the sanitary napkin 2 is more easily deformed, and the sanitary napkin 2 can be made. The wearing sense is improved. Moreover, such an effect is not limited to the above-described staggered arrangement, and for example, a plurality of slit portions may be disposed so that the slit portions adjacent to the longitudinal direction D _L of the sanitary napkin 2 have a regular overlap in the longitudinal direction D _L . section.

Further, in the absorbent article of the present invention, the arrangement of the plurality of slit portions is not limited to the above-described staggered shape, and any configuration may be employed without impairing the ease of deformation of the absorbent body and the rigidity of the absorbent body. form.

The means for forming the plurality of slit portions is not particularly limited, and any cutting means can be used. For example, the plurality of slit portions are conveyed by the transfer means and the coated sheet after being conveyed by any of the transport means, and are pressed against the circumferential surface of the cutting roller which is provided on the rotating cutting roller from above the coated sheet. A plurality of cutting blades can be formed. Further, by adjusting the distance between the cutting blade of the cutting roller and the conveying means, the slit portion can be formed without penetrating the absorbent body.

In the method of forming the shirring portion, the method of conveying the integrated coated sheet and the absorbent body by an arbitrary conveying means (a), and conveying the coated sheet and the absorbent body from the above a plurality of cutting blades are pressed against the upper surface of the covering sheet, and a plurality of slit portions formed in the intermediate portion of the thickness direction D _T of the absorbent body are formed through the covering sheet (b); and the covering sheet and the absorbent body are The method of removing the aforementioned cutting knife (c).

In the above method, in the above-mentioned item (b), although the plurality of slit portions are formed, the pressing force of the cutting blade is pressed at this time. Since the portion between the bottom portion of the slit portion and the conveying means can be formed into a high-density portion, the folding of the absorbent body starting from the high-density portion can be accurately achieved, and the wearing feeling of the wearer can be provided. .

Further, the high-density portion is a portion having a higher density of lower fibers than a portion where the slit portion does not overlap in the thickness direction of the absorber, as will be described later. Further, the comparison of the fiber densities is performed by observing the measurement target portion by an electron microscope, for example, by comparing the maximum diameter of the interfiber spaces in the portion.

In the absorbent article of the present invention, the direction in which the slit portion extends is not limited to a direction parallel to the width direction D _W of the absorbent article, and includes a direction substantially parallel to the width direction D _{W of the} absorbent article. In the present specification, "the direction in which the width direction D _{W of the} absorbent article is substantially parallel" means that when a plurality of slit portions are formed in such a direction, the action of the absorbent body and the coated sheet tends to be as described above. The surface side of the slit portion is folded (that is, it is easy to fold toward the surface side having the slit portion), and for example, it is preferable to form an angle of 0° or more and less than 30° with respect to the width direction D _{W of the} absorbent article. The direction is more preferably a direction in which an angle of 0° or more and less than 20° is formed, and more preferably a direction in which an angle of 0° or more and less than 10° is formed. Further, in the present specification, "the angle of 0° or more and less than 30° with respect to the wide direction D _{W of the} absorbent article" means that the straight line parallel to the width direction D _W of the absorbent article intersects the slit portion. The smallest of the angles formed is at an angle of less than 30° above 0°. Further, when the angle between the extending direction of the slit portion and the width direction D _W of the absorbent article is 30° or more, the slit portion is formed, and the width direction D of the absorbent article is easily cut in the absorbent body. _W fibers, so there is a concern that the rigidity of the absorber in the width direction is lowered. On the other hand, the extending direction of the slit portion is substantially parallel to the width direction D _{W of the} absorbent article, and the absorbent body and the covering sheet are easily folded toward the surface side having the slit portion, so that the slit direction can be made The absorber and the cover sheet are easily deformed along the body shape of the wearer, and it is possible to prevent the pulp or the like in the absorber from being exposed from the slit portion.

Further, as shown in FIG. 4 and FIG. 5, in the present embodiment, the absorbent body 9 further includes a concave portion formed in the thickness direction from the non-opposing surface of the skin at a position corresponding to the slit portion 12 in the thickness direction of the absorbent body 9. 14. In the absorbent article of the present invention, the structure of the concave portion is not particularly limited as long as the ease of folding of the absorbent body is not impaired, and the length of the concave portion in the width direction may be changed from the ease of deformation along the body shape. It is, for example, 3mm to 60mm, and ideally 5mm to 20mm. Further, the length in the longitudinal direction of the concave portion is not particularly limited, but may be, for example, 0.1 mm to 5 mm, preferably 0.5 mm to 2 mm. When the width of the concave portion is within such a range, it is easy to function as a starting point when the absorbent body is bent.

In the absorbent article of the present invention, the depth of the concave portion is not particularly limited, but may be, for example, 0.05 mm to 5.0 mm, and more preferably 0.1 mm to 3.0 mm, from the viewpoint of easy folding of the absorbent body. In the present specification, the depth of the concave portion means the distance between the surface opposite to the surface having the slit portion of the absorbent body 9 and the deepest portion of the concave portion, and can be the same as the depth of the slit portion described above. The measurement method is obtained. That is, in the above-described method of measuring the depth of the slit portion, measuring the aforementioned imaginary bottom surface to the concave portion The distance (mm) of the deepest portion, and the average value of the measured values of the above-described distances after the execution of any of the ten concave portions is taken as the depth (mm) of the concave portion.

Further, in the sanitary napkin 2, the depth of the slit portion 12 is deeper than the depth of the concave portion 14. Since the depth of the slit portion 12 is made deeper than the depth of the concave portion 14, the absorbent body 9 is bent toward the surface side having the slit portion 12, so that the pulp portion or the like in the absorbent body 9 can be prevented from being exposed by the slit portion. As a result, the durability as an absorber can be improved.

In the absorbent article of the present invention, the shape of the concave portion in a plan view is not particularly limited, and it is preferable that the slit portion 12 has substantially the same shape. When the slit portion and the concave portion have substantially the same shape in plan view, the absorbent body can be folded with high precision as a starting point between the portion between the slit portion and the concave portion. In the present specification, substantially the same shape means a shape in which the shapes are the same type and the center lines of the respective shapes overlap each other.

The concave portion of the sanitary napkin 2 according to the first embodiment of the present invention can be easily formed by, for example, pressing means such as embossing. When the concave portion is formed by a pressing means such as embossing, the portion between the bottom portion of the slit portion 12 that does not penetrate and the concave portion 14 is not thickened in the thickness direction of the absorbent body 9, because the high density portion 15 is Since the difference in rigidity between the peripheral portions occurs, the high-density portion 15 serves as a starting point for folding of the absorbent body 9, and the absorbent body 9 is easily returned to the planar shape. Moreover, since the portion between the bottom portion of the slit portion 12 and the concave portion 14 is made higher in density, the region having the slit portion 12 of the absorber 9 can be reinforced, so that the durability as the absorber can be improved.

Further, the pressing means may be used as a forming means of the above-described slit portion 12. That is, the recess 14 can be formed simultaneously with the slit portion 12. In other words, in the process of forming the slit portion 12 (the above-mentioned item (b)), the portion between the bottom portion of the slit portion 12 and the conveying means is pressed by the pressing force of the cutting blade to form a high-density portion. At the same time as the 15th, the absorber 9 is formed to be convex toward the lower side centering on the abutting point of the cutting blade (that is, the bottom of the slit portion 12). Further, in the absorbent body 9 thus deformed, in the above-described process (c), the pressing force of the cutting blade is removed, and the elastic force of the fibers constituting the absorbent body 9 is restored to the original shape, but the slit portion 12 is Since the high-density portion 15 between the bottom portion and the conveying means is pressed without being restored, the portion is maintained in a state of being adjacent to the bottom portion of the slit portion 12, so that the concave portion 14 centering on the portion is formed in the absorbent body 9. The surface on the side of the conveyance means (that is, the surface on the side opposite to the surface having the slit portion 12).

According to such a method, since the slit portion 12 and the recessed portion 14 are formed to have substantially the same shape in plan view in the position corresponding to the thickness direction of the absorber 9, the gap between the bottom portion of the slit portion 12 and the recess portion 14 can be accurately achieved. The portion serves as a starting point for the folding of the absorbent body and provides a comfortable mounting feel for the wearer. Further, since the high-density portion 15 is formed between the bottom portion of the slit portion 12 and the concave portion 14, the same effect as that obtained by using the above-described pressing means such as embossing can be obtained.

Next, a state in which the sanitary napkin 2 according to the first embodiment of the present invention is folded together with the packaging sheet 3 will be described with reference to the drawings. Figure 6 is a view showing a sanitary napkin 2 and a package according to a first embodiment of the present invention. FIG. 7 is a perspective view showing a state in which the sanitary napkin 2 of the first embodiment of the present invention is folded together with the packaging sheet 3 in the all-folded region 5, in a state in which the sheets 3 are folded together in a fold line region 5. As shown in Fig. 6, a fold line region 5 is formed at a position where the long end portions 16 when the sanitary napkin 2 and the packaging sheet 3 are folded in the other fold line regions are not overlapped. The fold line region 5 is formed at such a position, and as shown in Fig. 7, even if the sanitary napkin 2 and the packaging sheet 3 are folded in the full fold line region 5, the first end portion 16 which is folded first is not again in the fold line region 5. In the case of rolling up, the formed package 1 does not become bulky.

FIG. 8 is a partial cross-sectional view showing a state in which the package body 1 according to the first embodiment of the present invention is folded in the middle of the fold line region 5. When the package body 1 is folded in the fold line region 5, if the angle θ formed by the surface sheets 7 of the skin facing surfaces is reduced, the surface sheet 7 starts to peel off in the layer of the absorbent body 9 in the fold line region 5, and slightly swells. . Further, the surface sheets 7 of the skin facing surfaces are in contact with each other, and if pressure is applied in the vicinity of the folding line region 5, the surface sheet 7 on the ridges is broken. In this manner, the surface sheet 7 prevents the folding of the sanitary napkin 2 by the occurrence of the raised portion when the sanitary napkin 2 is folded, and after folding the sanitary napkin 2, the folded shape is maintained by the destruction of the raised portion. The same phenomenon may occur in the inner sheet 8, the packaging sheet 3, and the like.

On the other hand, the absorbent body 9 of the sanitary napkin 2 is provided with the slit portion 12, and the slit portion 12 is formed in the middle portion in the thickness direction of the absorbent body 9 by the penetrating sheet 10 in the wide direction at least in the fold line region 5. a portion in which the slit portion 12 is provided in the longitudinal direction of the fold line region 5 The other portions have poor rigidity, and when folded into a package form, the slit portion 12 becomes a starting point of bending, and a folded shape is easily formed. Further, since the slit portion 12 is cut into the skin facing surface of the absorbent body 9, the bulging in the surface sheet 7 does not occur, and the ease of folding of the sanitary napkin 2 is not hindered.

Further, since the absorbent body 9 is provided with the high-density portion 15 at least at a position where the slit portion 12 overlaps in the thickness direction of the absorbent body, the rigidity difference between the high-density portion 15 and the peripheral portion thereof is generated, and the package is folded into a package. In the case of the form, the high-density portion 15 serves as a starting point for bending, and it is easy to form a folded shape. In addition, since the high-density portion 15 is formed to increase the rigidity of the portion of the slit portion 12 and the position overlapping the thickness direction of the absorber 9, the force (restoring force) returned to the planar shape acts as an absorbent body. 9 The mechanical elements that return to the planar shape function.

Further, the region including the high-density portion 15 is formed in an arc shape from the outer peripheral surface of the concave portion 14 to the middle of the thickness direction of the absorber 9. When the region containing the high-density portion 15 is formed as described above, when the absorber 9 is folded, the region including the high-density portion 15 and the U-shaped spring are extended in the opposite direction to the bending direction, and the absorber 9 is returned to the planar shape. Force (resilience) works further.

Further, the high-density portion 15 is formed in a portion in the thickness direction of the absorber 9 between the bottom portion of the slit portion 12 and the recess portion 14, and the region including the high-density portion 15 is included in an arc shape from the outer peripheral surface of the recess portion 14. A medium density portion other than the high density portion 15 in the middle of the thickness direction of the absorber 9 is formed. Moreover, the area other than the area containing the high density part 15 in the absorber 9 is Low density section.

In the present embodiment, the structure in which the absorber includes the recessed portion 14 is described. However, in another embodiment, the absorber does not include the recessed portion 14, and only the portion of the absorber in which the slit portion overlaps the thickness direction is high. A region containing a high density portion is formed by uniformly pressing the absorber.

The depth of the slit portion in the present invention is half or less of the thickness of the absorbent body 9 as described above, or may be 70% or less. When the slit portion 12 is formed as described above, since the portion where the slit portion 12 is not formed accounts for more than half or more of the thickness of the absorber 9, or 30% or more, the force (restoring force) which returns to the planar shape is sufficiently exerted, and the improvement can be further improved. The sense of attachment of the sanitary napkin 2 in the fold line region 5.

The fold line region in the present invention may be formed in plural at a position where the absorbent article and the packaging sheet overlap. In this case, it is preferable that at least one or more slit portions are formed in each of the fold line regions. If the slit portion is formed in this way, the absorbent body is also easily folded in any of the fold line regions.

Further, as described above, the slit portion may be formed such that the other slit portion intermittently extends in an extension line in the width direction of the slit portion. Since the slit portion is formed in this manner, since the other slit portions in the fold line region are discontinuously extended on the extension line of the slit portion, the non-slit portion is present on the same line in the wide direction, and is wider than the slit portion in the width direction. The case of continuous extension is more able to maintain the rigidity of the absorber. Moreover, the portion where the slit portion is not formed is left in the wide direction of the absorbent body, and the restoring force when the absorbent article is folded is exhibited.

As shown in FIG. 8, the inner sheet 8 is on and the packaging sheet 3 The opposing surfaces (that is, the skin non-opposing surface or the garment abutting surface) are formed with fixing portions 13 and 13 for the clothes of the wearer who can attach the sanitary napkin 2 to the undergarment. The fixing portions 13 and 13 are formed, for example, by applying a hot-melt adhesive to a predetermined position of the garment abutting surface of the inner sheet 8.

The fixing portions 13 and 13 are the garment abutting faces of the sanitary napkin 2, and are formed in regions other than the region where the folding line region 5 overlaps the slit portion 12. Since the fixing portions 13 and 13 are formed in such a region, when the sanitary napkin 2 is folded, since the fixing portions 13, 13 are not present in the folding line region 5 of the garment abutting surface of the sanitary napkin 2, the absorbent body 9 is not hindered. The force (resilience) that returns to the planar shape. When the fixing portions 13, 13 are present in the folding line region 5 of the garment abutting surface of the sanitary napkin 2, the fixing portions 13, 13 are stretched in a state in which the sanitary napkin 2 is folded, and the state can be maintained. Further, as the extending fixing portions 13, 13 cause a path difference between the surface sheet 7 and the inner sheet 8, the inner sheet 8 is also easily maintained in a folded state, so that the sanitary napkin 2 is not easily restored to a planar shape, and as a result, The installation feeling of the sanitary napkin 2 is deteriorated.

Further, as shown in Fig. 2, in the sanitary napkin 2 according to the first embodiment of the present invention, the slit portion 12 does not exist at both edge portions of the absorbent body 9 in the width direction _DW . Since the slit portions of the both edges are not present, the absorbent body 9 can secure a predetermined strength at the both edges, so that even at both edges of the wide cotton direction D _W of the sanitary napkin 2 and the leg circumference of the wearer When the friction or the like is generated, the absorbent body is not easily broken, and the portion where the slit portion 12 is not formed is left at the end portion in the wide direction of the absorbent body, and the restoring force when the sanitary napkin 2 is unfolded from the folded state can be exhibited. .

In the absorbent article of the present invention, from the viewpoint of preventing separation between the absorbent body and the coated sheet, a plurality of press portions can be formed by pressing the absorbent body and the coated sheet by embossing or the like, but the plurality of press portions can be formed. The number and size of the press sections may increase the rigidity of the absorber too high, and the absorbent article may not easily reflect the deformation of the body shape of the wearer. Therefore, when the plurality of press portions are formed in the absorber and the cover sheet, it is preferable that at least a part of the press portion overlaps the slit portion. Since the sipe portion is formed in at least a part of the press portion, the rigidity of the absorber can be lowered. Therefore, the excessively high rigidity of the absorber due to the plurality of press portions can be suppressed within a certain range, and in the case of an absorbent article A suitable fit can be obtained.

Further, in the sanitary napkin 2 according to the first embodiment of the present invention, at least one slit portion 12 in the press groove 11 and the fold line region 5 is formed to be orthogonal to each other in the planar direction. The squeezing groove 11 is formed in such a manner as to strengthen the rigidity of the tampon 2 in the longitudinal direction, so that the force (recovery force) of returning to the planar shape can be sufficiently exerted when the planar tampon 2 is returned to the planar shape, and the ridge line region 5 can be further improved. The sense of installation of the sanitary napkin 2.

Further, in the absorbent article of the present invention, the plurality of slit portions may be disposed only in a region of the absorbent body and a part of the coated sheet. In this case, the plurality of slit portions may be disposed only in the fold line region, and the rigidity may be lowered. Where. For example, in the absorbent article of the present invention, in order to improve the absorption performance of the excretion opening abutment region where the excretion opening of the wearer abuts, it is possible to arrange more of the absorbent body in the excretion opening abutment region than the peripheral region. The amount of pulp, however, if the amount of pulp in the absorbent body is increased, because the discharge port abuts the area Since the rigidity is increased, a plurality of slit portions are disposed in the discharge port abutment region, which can improve the absorption performance of the absorbent article and suppress the increase in rigidity of the absorbent body. In addition, since the front region and the rear region located on the both end portions of the absorbent article in the longitudinal direction are regions corresponding to the curvature of the body shape of the wearer, the front region or the rear region is A plurality of slit portions are disposed in at least one of the regions, and the rigidity of the region corresponding to the portion having a large curvature of the body shape of the wearer is lowered, and the fit of the absorbent article to the body shape of the wearer can be further improved.

(Second embodiment)

Fig. 9 is a plan view of the absorber 9' of the package 1' according to the second embodiment of the present invention. The absorbent body 9' in this embodiment has the same configuration as that of the above-described embodiment except for the form formed by the slit portion 12'. In the embodiment, the slit portion 12' is provided with one or more convex shapes having the longitudinal end portions 17 facing the absorber 9' in the fold line region.

The slit portion 12' in the present embodiment is a region other than the both edges in the width direction _DW of the absorber 9', and the length and curvature can be appropriately changed. Thus, the slit portion 12' at both edges is not present, and as described above, since the predetermined strength can be secured at the both edge portions, even at both edges of the width direction D _W of the sanitary napkin 2' and the wearer's Friction between the leg circumferences, etc., the absorbent body is also not easily broken, and the portion where the slit portion 12' is not formed is left at the end portion in the wide direction of the absorbent body, and the sanitary napkin 2' can be deployed from the folded state. Resilience at the time.

Thus, by continuous shape in the width direction of the sanitary napkin 2' In the shape of the curved slit portion 12', the fold line of the absorbent body 9' is formed as a line connecting the start point and the end point of the slit portion 12', or formed in a convex portion, and the absorbent body 9' can be more easily folded. .

In the absorbent article of the present invention, the shape of the slit portion in plan view is not limited to the above-described embodiment, and any shape may be employed without impairing the ease of deformation of the absorbent body and the strength of the absorbent body. . Examples of the shape of the slit portion include a V shape, a wave shape, a zigzag shape, a circular shape, a polygonal shape, and the like.

In the first and second embodiments, the slit portions 12 and 12' are formed on the skin facing surface, but the slit portion in the package according to another embodiment of the present invention is formed. On the opposite side of the skin. At this time, in the fold line region of the absorbent body, the portion where the slit portion is provided is inferior in rigidity to the portion other than the slit portion, and the slit portion becomes the starting point of the bending. Further, by forming a slit portion on the non-opposing surface of the skin, it is possible to absorb the path difference which occurs when the absorbent article is folded. By the action of these, when the absorbent article is folded into a package form, the folded shape is easily formed.

The present invention is applicable to various types of absorbent articles such as sanitary pads and incontinence pads, in addition to the sanitary napkins of the above-described embodiments. In addition, the absorbent article of the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit and scope of the invention.

3‧‧‧Packing sheets

5‧‧‧Dash line area

7‧‧‧Surface

8‧‧‧Inside sheet

9‧‧‧ absorber

10‧‧‧ Covered sheets

12‧‧‧Slit part

13‧‧‧ Fixed Department

14‧‧‧ recess

15‧‧‧High Density Department

Claims (9)

A package body of an absorbent article having a long direction and a wide direction, and a fold line region extending in the wide direction is formed by folding an absorbent article having an absorbent body together with a packaging sheet. In the package of the article, the absorbent body has one surface and the other surface, and at least one or more of the fold line regions are formed by cutting from one surface to the thickness direction of the absorber. In the slit portion, the slit portion has an opening extending in the width direction on the one surface, and the absorber is provided at least at a position overlapping the slit portion in the thickness direction of the absorber. The slit portion is a high-density portion in a portion where the thickness of the absorbent body is not repeated. The package of the absorbent article according to claim 1, wherein the one surface is a skin facing surface. The package of the absorbent article according to the first or second aspect of the invention, wherein the slit portion has a depth of 70% or less of the thickness of the absorbent body. The package of the absorbent article according to the first aspect of the invention, wherein the absorbent body is provided on the other surface from the other side at a position where the slit portion overlaps the thickness direction of the absorbent body The surface is formed into a concave portion in the middle of the thickness direction of the absorbent body. The package of the absorbent article according to claim 4, wherein the high-density portion is formed from an outer peripheral surface of the concave portion to a front portion The thickness direction of the absorber is halfway. The package of the absorbent article according to the first aspect of the invention, wherein the plurality of packages are formed by folding the absorbent article and the packaging sheet a plurality of times in a plurality of the fold line regions, The absorber has at least one or more of the slit portions in each of the regions of the fold line region. The package body of the absorbent article according to the first aspect of the invention, wherein the absorbent body includes a plurality of the slit portions intermittently arranged in the width direction in the fold line region. The package of the absorbent article according to the first aspect of the invention, wherein the absorbent article is provided on a garment contact surface of the absorbent article, that is, in a non-folded region other than the fold line region. The absorbent article is fixed to a fixing portion for the wearer's clothing. The package of the absorbent article according to the first aspect of the invention, wherein the opening has a curved shape that protrudes toward an end portion in the longitudinal direction.