JP2564283Y2 - Sanitary napkin - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sanitary napkin for absorbing menstrual blood, and more particularly to a sanitary napkin having wing-type flaps extending from both side edges capable of wrapping a crotch portion of worn pants. For napkins.

[0002]

2. Description of the Related Art Conventionally, in a sanitary napkin, a liquid-absorbent core is interposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, and the front and back sheets are outwardly directed from both side edges of the core. Are formed to form a wing-shaped flap by extending the flap. Such a wing has the function of fixing the sanitary napkin to the crotch portion of the wearing pants via the adhesive applied to the back surface, but the sanitary napkin once fixed cannot adjust the position with respect to the local part.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a sanitary napkin capable of adjusting its position with respect to a local part even after wearing pants.

[0004]

According to the invention, a wing is provided in which a liquid-absorbent core is interposed between a liquid-permeable topsheet and a liquid-impermeable backsheet, and extends outward from both side edges of the core. A sanitary napkin in which a flap having a portion is formed and an adhesive is applied to the back surface of the wing portion is assumed. In this assumption, the Ri width is more than twice the width of the core tare between the side edges of the two wings, the in the region of said core rear surface
The sheet is coated with an adhesive to adhere to the pants
The lack of this is a feature of this invention.

[0005]

In the sanitary napkin configured as described above, if the width of the liquid-absorbent core is set to be substantially equal to the width of the crotch abutment, when the wings are folded back so as to enclose the crotch abutment,
Since the side edge portions of the wing portions overlap each other, the overlapping portions are joined. Sanitary napkin Ri is Na <br/> cylindrically portion, Do not on the back part of the napkin body has a pressure-sensitive adhesive
From the stomach, be capable of shifting the position in the crotch touching section longitudinal direction, moreover never deviate from the crotch touching section.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the illustrated embodiment .

FIG. 1 shows a sanitary napkin 1 according to the present invention.
FIG. The napkin 1 includes a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3, and a liquid-absorbent core 4 interposed between the front and back sheets 2 , 3 . 3 are closely bonded. The front and back sheets 2 , 3 extending outward from both side edges of the core 4 form an extension portion 5, and a wing portion 6 is further outwardly provided at a longitudinal center portion of the extension portion 5.
The extension, the extension 5 and the wing 6 form a flap 9. The distance X between the side edges 7 of the left and right wing parts 6 is
X> 2Y with respect to the width Y of the core 4 in the portion where the distance is measured.

FIG. 2 is a perspective view showing the back surface of FIG.
A wing portion 6 prepared as a separate member at the extension portion 5 is joined to the back sheet 3 by a joining line 8.
Adhesive 10A near the side edge 7 on the back side of the wing portion 6 ,
10B, which are covered with release papers 11A and 11B. It should be noted here that the area of the core 4
The back sheet 3 is different from a conventionally known napkin.
That is, no adhesive was applied.

FIG. 3 is a schematic cross-sectional view of the wearing pants crotch portion 31 showing the use state of the sanitary napkin 1 configured as described above. It is about the same. When the back side of the napkin 1 is applied to the skin contact surface of the crotch contact portion 31 and the wing portion 6 is folded along the side edge of the core 4 so as to wrap the portion 31,
The two wing parts 6 can be overlapped at least near the side edges 7 of each other. One wing portion 6 peels off the release paper 11A between the superposed wing portions 6 and adheres to the surface of the other wing portion 6 via an adhesive 10A. 31 can be wrapped. The other release paper 11B is left attached. By doing so, the napkin 1 does not directly adhere to the crotch abutment 31, but can be shifted to the front and rear direction of the crotch abutment 31 to be positioned with respect to the local portion, and can be detached from the crotch abutment 31. There is no.

FIG. 4 is a rear view of the sanitary napkin 1, showing various aspects of the wing portion 6 by (A) , (B) and (C). In (A), there are wing portions 6A and 6B near both ends of the napkin 1, respectively, which is effective for preventing a relatively large napkin from being twisted at the crotch abutment portion 31. The left and right wing portions 6 in (B) are formed in a triangular shape as can be seen from the folded imaginary line, and the length of each horizontal side is substantially the same as the width of the back sheet 3. The oblique sides are parallel to each other, and the other side is a substantially vertical joining line 8. Although the folded wings 6 do not overlap in the figure, they can easily overlap if they are slightly displaced vertically. The width between the side edges 7 of the wing portion 6 is the width between the vertices 7 of the triangle and is at least three times the width of the liquid-absorbent core 4, regardless of the width of the crotch abutment 31. The part 31 can be wrapped. Moreover, although the wing portion 6 is relatively large, the wing portion 6 fits easily when folded, so that it is easy to individually wrap the napkin 1 in the manufacturing process. In the napkin 1, the release papers 11A , 11A of the two wing portions 6 are provided.
When B is peeled off and stuck and fixed to the crotch portion 31 without shifting both wing portions 6 up and down, a conventional napkin is obtained. The user can do so as desired. (C) shows a case where the left and right wing portions 6 are asymmetrical and have different dimensions in the width direction. With this arrangement, the wings 6 can be bonded to each other at a position shifted from the center of the crotch abutment 31 in the width direction.

In the illustrated example, a case is shown in which the wing portion 6 is prepared as a separate member and this is joined to the back surface of the napkin. For such joining, various adhesives including a hot-melt type adhesive or the napkin 1 are used. Heat fusion depending on the constituent material,
Means such as ultrasonic fusion can be used. In addition, the top sheet 2 and the back sheet 3 extending from the side edge of the liquid-absorbent core 4 may be used for the wing portion 6, and may be configured integrally with those sheets.

The sanitary napkin 1 is made of a liquid-permeable nonwoven fabric or a liquid-perforated plastic sheet on the top sheet 2, a liquid-impermeable plastic sheet on the back sheet 3,
A mixture of ground pulp and a superabsorbent polymer can be used for the absorbent core. Regardless of whether the wing portion 6 is liquid-permeable or liquid-impermeable, the same material as the top sheet 2 and the back sheet 3 can be used.

[0013]

[Effect of the invention sanitary napkin according to this invention, the Ri and the distance between the side edges of the right and left wing portions more than twice the width of the liquid-absorbent surname core tare, yet worn on the back portion of the absorbent core Bread
Do not have a pressure-sensitive adhesive for Tsu, it readily der encasing the crotch hook part wear pants in a cylindrical shape, also can adjust the position with respect to local shifted in the longitudinal direction after the pants worn, moreover It does not come off or twist at the crotch area.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a sanitary napkin partially broken away.

FIG. 2 is a perspective view showing the back surface of the sanitary napkin of FIG. 1;

FIG. 3 is a schematic cross-sectional view of a crotch portion worn by pants.

FIG. 4 is a rear view of the sanitary napkin, and FIG.,
(B),(C) shows different aspects of the wing part.
You.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sanitary napkin 2 Liquid-permeable surface sheet 3 Liquid-impermeable backsheet 4 Liquid-absorbent core 6 Wing part 7 Wing part side edge 10A, 10B Adhesive

Claims (1)

(57) [Scope of request for utility model registration] 1. A flap having a wing portion extending outward from both side edges of a core with a liquid-absorbent core interposed between a liquid-permeable topsheet and a liquid-impermeable backsheet. in the sanitary napkin coated with adhesive on the back surface of the wing portion, Ri width is more than twice the width of the core tare between both side edges of the wing portion, the in the region of the core backsheet
The sanitary napkin is not coated with a pressure-sensitive adhesive for adhering to worn pants .