JP3074441U - Sanitary napkin - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To surely catch a descending object to prevent side leakage and to eliminate uncomfortable feeling at the time of mounting. A sanitary napkin comprising a liquid-absorbing material (3) between a liquid-permeable top sheet (1) and a liquid-impermeable back sheet (2), wherein a pleat (4) is provided on the front side of the top sheet (1).
Are formed in parallel in the width direction extending in the longitudinal direction and orthogonal to the longitudinal direction. With the center line L extending in the longitudinal direction of the topsheet 1 as a border, the right half pleats 41
1a is released, and the left half pleat 42 is
a is released and folded on the topsheet 1 respectively. In addition, the pleats 4 are fixed to the topsheet 1 at regular intervals in the longitudinal direction. Due to the pleats 4, the topsheet 1 includes a plurality of small bag-shaped pockets 1a.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a sanitary napkin, and more particularly, to a sanitary napkin formed to reliably prevent lateral leakage during menstruation.

[0002]

[Prior art]

 Conventionally, as this type of absorbent pad, for example, a liquid-absorbing material is provided between a liquid-permeable top sheet and a liquid-impermeable backing sheet, and a half-width portion is provided at the rear half position of the above-mentioned top sheet. There is a type in which a plurality of protruding portions extending in the intermittent direction are intermittently arranged in the front-rear direction (longitudinal direction) (for example, see JP-A-11-318976).

[0003]

[Problems to be solved by the invention]

 By the way, this type of napkin is formed so that it can catch down objects securely and prevent it from leaking and leaking to the front, back, left and right, and it also fits the skin when worn and does not give users discomfort. Is desirable.

However, in the conventional product, as described above, since the raised portions are formed intermittently in the front-rear direction, it is easy for a descending object to flow in the width direction (lateral direction) from the groove-shaped gap between the adjacent raised portions. Further, the raised portion presses the skin, so that it is easy for the user to feel uncomfortable.

The present invention has been proposed in view of such a problem of the conventional product. Therefore, a technical problem of the present invention is to provide a sanitary napkin formed so as to reliably catch a descending object and prevent side leakage, and to prevent a user from feeling uncomfortable when wearing the sanitary napkin.

[0006]

[Means for Solving the Problems]

 The present invention employs the following technical means in order to solve the above problems.

That is, as shown in FIG. 1 and the like, the present invention relates to a sanitary napkin including a liquid-absorbing material 3 between a liquid-permeable top sheet 1 and a liquid-impermeable back sheet 2. A plurality of pleats 4 are formed on the front side of the topsheet 1 in the longitudinal direction and are formed in parallel in the width direction perpendicular to the longitudinal direction, and at the center line L extending in the longitudinal direction of the topsheet 1, The right half pleats 41 release the left side edge 41a, the left half pleats 42 release the right side edge 42a and are folded on the topsheet 1, respectively, and the pleats 4 are spaced at regular intervals in the longitudinal direction. The top sheet 1 is provided with a plurality of small bag-shaped pockets 1a by the pleats 4 (claim 1).

In the case of the present invention, the number of formed pleats 4 and the width thereof are arbitrary. Further, the volume and number of the pocket portions 1a may be appropriately selected according to the length and width of the topsheet 1, and the like.

In the present invention, the pleats 4 are preferably formed in parallel, and the width of the pleats 4 is preferably the same over the width direction of the surface sheet 1 (claim 2).

In this case, the formation of the pleats 4 can be facilitated, and the manufacturing cost can be reduced.

Further, in the present invention, as shown in FIG. 6, it is preferable that the pleats 4 are formed so as to become wider as approaching a center line L extending in the longitudinal direction of the topsheet 1 (claim 3).

The descending material is normally discharged to a position on a center line L extending in the longitudinal direction of the topsheet 1. In the case of the present invention, the opening of the pocket portion 1a becomes larger as it is closer to the center line L. Therefore, it is possible to catch and store a descending object at a position closer to the center line L, thereby preventing lateral leakage. It is.

Further, in the present invention, as shown in FIGS. 7 and 8, the pleats 4 may be formed with the formation interval D changed. In this case, in particular, as shown in FIG. 8, it is preferable that the formation interval D of the pleats 4 is formed to be narrower in a continuous manner away from a center line L extending in the longitudinal direction of the topsheet 1. 4).

In this case, the pocket portion 1a is reliably opened by the falling object discharged near the center line L, and as a result, the falling object is easily captured.

In the present invention, as shown in FIG. 9, it is preferable that the positions of the fixing points 4a in the longitudinal direction of the pleats 4 are shifted between adjacent pleats 4 (claim 5).

In this case, falling objects flowing in the width direction over the valleys of the pleats 4 can be captured by the pocket portions 1a of the adjacent outer pleats 4, so that lateral leakage can be reliably prevented.

[0017]

[Embodiment of the invention]

 Hereinafter, a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

In FIG. 1, etc., 1 is a liquid-permeable top sheet, and 2 is a liquid-impermeable back sheet. 3 is a water absorbing polymer as a liquid absorbing material. The liquid absorbing material 3 is provided between the front sheet 1 and the back sheet 2.

In the present invention, a plurality of pleats 4 are formed on the topsheet 1 so as to extend in the longitudinal direction thereof and be arranged in parallel in the width direction orthogonal to the longitudinal direction. In this embodiment, the pleats 4 are formed in parallel as shown in FIG. 2, and the pleats 4 are formed to have the same width across the width of the topsheet 1.

L is a center line extending in the longitudinal direction of the topsheet 1. The pleats 4 are folded over the topsheet 1 with the right half pleats 41 releasing the left edge 41a and the left half pleats 42 releasing the right edge 42a with the center line L as a boundary.

The pleats 4 are fixed to the topsheet 1 at regular intervals in the longitudinal direction. In this embodiment, the fixing portion 4a is heat-welded, and the pleat 4 is integrated with the topsheet 1 and the liquid absorbing material 3 at this portion 4a. The portion 4b between the fastening points 4a is separated from the topsheet 1 and is released. In the product of the present invention, a plurality of small bag-shaped pocket portions 1a are thus formed on the topsheet 1.

Next, the operation of the present invention will be described.

In the case of the present invention, due to bleeding during menstruation, the liquid-absorbent material 3 expands from the state of FIG. 4 as shown in FIG. In this case, the portion 4b between the fastening portions 4a of the pleats 4 is separated from the topsheet 1 as described above.

Therefore, when the liquid-absorbent material 3 expands, the falling object 5 (see FIG. 5) discharged between the expanding topsheet 1 and the skin pushes the expanding topsheet 1 back. As a result, as shown in FIG. 5, the above-mentioned portion 4b of the pleat 4 is separated from the topsheet 1, the pocket portion 1a is opened, and the descending object 5 is captured by the pocket portion 1a.

[0025]

[Effect of the invention]

 As described above, in the present invention, a plurality of pleats are formed in parallel in the width direction extending in the longitudinal direction and in the width direction orthogonal to the longitudinal direction. Release the left edge, release the left half pleats on the right edge and fold each on the topsheet, and also fasten the pleats to the topsheet at a fixed interval in the longitudinal direction, thereby the topsheet is It has a plurality of small bag-shaped pockets.

Therefore, in the case of the present invention, when the liquid-absorbing material expands, the descending object pushes back the expanding surface sheet to open the pocket. Therefore, if this is used, it is possible to catch the falling object at the pocket portion, and it is possible to reliably prevent the side leakage.

In the present invention, since the pleats are folded almost flush with the topsheet, the user does not feel uncomfortable when wearing the pleats.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a preferred embodiment of the napkin of the present invention.

FIG. 2 is a plan view of the napkin.

FIG. 3 is a sectional perspective view of a main part taken along line III-III in FIG. 2;

FIG. 4 is a fragmentary sectional view for explaining the operation of the napkin.

FIG. 5 is a fragmentary sectional view for explaining the operation of the napkin.

FIG. 6 is a main part plan view showing another embodiment of the napkin.

FIG. 7 is a main part plan view showing another embodiment of the napkin.

FIG. 8 is a main part plan view showing another embodiment of the napkin.

FIG. 9 is a plan view of a principal part showing still another embodiment of the napkin.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Top sheet 1a Pocket part 2 Back sheet 3 Liquid-absorbent material 4 Pleat 41 Right half pleats 41a Left edge 42 Left half pleats 42a Right edge 4a Fastening point 4b Portion between fastening points 5 Downhill D pleats formation Spacing L center line

Claims (5)

[Utility model registration claims] 1. A sanitary napkin comprising a liquid-absorbing material between a liquid-permeable top sheet and a liquid-impermeable back sheet, wherein pleats are formed on the front side of the top sheet in the longitudinal direction. A plurality of extending and formed in parallel in the width direction orthogonal to the longitudinal direction, bordering on the center line extending in the longitudinal direction of the topsheet,
The right half pleats release the left side edge, the left half pleats release the right side edge and are folded on the face sheet, respectively. A sanitary napkin characterized in that the topsheet is provided with a plurality of small bag-shaped pockets by pleating. 2. The sanitary napkin according to claim 1, wherein the pleats are formed in parallel, and the pleats are formed to have the same width across the width of the topsheet. . 3. The sanitary napkin according to claim 1, wherein the pleats are formed wider as the pleats are closer to a center line extending in the longitudinal direction of the topsheet. 4. The sanitary napkin according to claim 1, wherein the intervals between the formation of the pleats are narrower as the distance from the center line extending in the longitudinal direction of the topsheet increases. For napkins. 5. The sanitary napkin according to any one of claims 1 to 4, wherein the positions of the pleats in the longitudinal direction are shifted between adjacent pleats. For napkins.