TWI556801B - Shorts type sanitary napkins - Google Patents

Description

Shorts type sanitary napkin

The present invention relates to a pants-type sanitary napkin.

A conventional sanitary napkin which can improve the fit and can suppress leakage of menstrual blood has been provided by the prior art (for example, Patent Document 1). The sanitary napkin of the patent document 1 is a pair of grooves which are disposed outside the center in the front-rear direction of the sanitary napkin and the outer side in the width direction at the center in the width direction. The groove of Patent Document 1 is a convex shape that extends in the front-rear direction and faces inward in the width direction. The sanitary napkin of the patent document 1 is the center of the front and rear direction of the sanitary napkin, and the center of the width direction is inwardly expanded (refer to the second drawing of Patent Document 1).

[Practical Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2008-302238

However, the above-mentioned physiological sanitary napkin has the following problems.

When the sanitary napkin of Patent Document 1 is used, the user sets the crotch portion of the underwear as a rough mark, and the sanitary napkin is attached to the underwear. At this time, since the positioning of the underwear and the sanitary napkin is not based on the accuracy, the position of the absorbent body in the front-rear direction of the sanitary napkin is deviated depending on the user. Further, even if the same user is installed, the position of the absorbent body of the sanitary napkin in the front-rear direction may be deviated every time the same position is installed. When the position of the absorber is not suitable, the fit of the absorber is lowered, and leakage of body fluid occurs.

The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a pants-type sanitary napkin in which any user can arrange an absorbent body at an appropriate position and suppress leakage of body fluid.

The pants-type sanitary napkin of the present invention has a front-rear direction extending toward the front side and the body rear side of the user, a width direction perpendicularly intersecting the front-rear direction, an inner direction toward the user, and an opposite direction toward the inner direction. The outer direction of the side is provided in a peripheral region of the anterior humerus disposed on the front side of the body, a region surrounding the posterior condyle disposed on the posterior side of the body, and a region surrounding the fore and aft region and the surrounding region of the posterior condyle. The armpit region of the armpit includes an absorbent body provided with a skin sheet and an absorbent body, a front waistband member disposed in the peripheral region of the front sill, and a rear waistband disposed in the surrounding area of the breech Member, and the aforementioned front waistband member a side edge and a side joint portion to which the outer edge of the rear waistband member is joined, and a pair of leg peripheral opening portions disposed around the leg of the user, and an opening around the waist disposed around the user's ankle And a press portion for pressing the skin surface sheet and the absorbent body in a thickness direction, wherein the press portion is wider in a width direction than a discharge port facing portion disposed facing the drain opening of the user. Both of the outer sides have a pair of drain port press portions extending in the front-rear direction, and the center of the drain port press portion in the front-rear direction is located on the front side of the center in the front-rear direction of the sanitary napkin in the crotch region.

According to the present disclosure, it is possible to provide a pants-type sanitary napkin in which any user can arrange the absorbent body in an appropriate position and suppress leakage of body fluid.

A1‧‧‧non-joined area

Surrounding area of S1‧‧‧

S2‧‧‧After the surrounding area

S3‧‧‧胯下域

L‧‧‧ direction

T‧‧‧ thickness direction

W‧‧‧Width direction

1‧‧‧Short-type sanitary napkin

Center of the front and rear direction of 1LC‧‧ ‧ sanitary napkin

10‧‧‧Absorbable ontology

11‧‧‧ body top sheet

12‧‧‧ body film

13‧‧‧Acceptor

14‧‧‧ Body back sheet

15‧‧‧ leak-proof flexible members

20‧‧‧Chassis

20F‧‧‧ front edge

20R‧‧‧ rear edge

21‧‧‧Outer top sheet

22‧‧‧After the outer sheet

22F‧‧‧ front edge

22R‧‧‧ rear edge

24‧‧‧Front exterior top sheet

24F‧‧‧ front edge

24R‧‧‧ rear edge

25‧‧‧Back side top sheet

25F‧‧‧ front edge

25R‧‧‧ rear edge

26‧‧‧Flexural members around the waist

27‧‧‧Flexible members around the leg

27A‧‧‧1st area

27B‧‧‧2nd area

29‧‧‧ Side joint

31‧‧‧ Opening around the waist

32‧‧‧ openings around the legs

32E‧‧‧ inside edge

41‧‧‧ Front belt members

42‧‧‧After waistband components

43‧‧‧ Pants components

60‧‧‧ leak-proof wrinkles

61‧‧‧ joint part

61A‧‧‧1st joint

61B‧‧‧2nd joint

62‧‧‧Contraction

80‧‧‧Squeeze Department

81‧‧‧Excretion port press section

81LC‧‧‧Center of the front and rear direction of the drain section

82‧‧‧Front side press section

83‧‧‧Back side press section

84‧‧‧Front side press section

85‧‧‧Back side press section

811‧‧‧1st convex

812‧‧‧2nd convex

813‧‧‧3rd convex

814‧‧‧ intermediate point

815‧‧‧ intermediate point

821‧‧‧1st front side press section

822‧‧‧2nd front side press section

831‧‧‧1st back side press section

832‧‧‧2nd back side press section

[Fig. 1] A front view of a pants-type sanitary napkin of an embodiment.

[Fig. 2] Development view of the pants-type sanitary napkin shown in Fig. 1.

[Fig. 3] A schematic cross-sectional view taken along line A-A of Fig. 2;

[Fig. 4] A cross-sectional view of a cross section of the pants-type sanitary napkin in the width direction and a cross section in the front-rear direction.

[Fig. 5] A plan view of the absorbent body.

[Fig. 6] A view showing the state in which the pants-type sanitary napkin is mounted.

(1) Overall composition of shorts type sanitary napkin

The overall configuration of the pants-type sanitary napkin 1 of the embodiment will be described with reference to Figs. 1 to 5 . The pants-type sanitary napkin 1 of the present embodiment is a pant type sanitary napkin in which a panty type is formed in advance. Further, the pants-type sanitary napkin 1 of the present embodiment may be a night-type pant-type sanitary napkin or a daily-use panty-type sanitary napkin.

The pants-type sanitary napkin 1 has a front squat area S1 disposed on the front side of the user's body, a squat area S2 disposed on the back side of the user's body, and a kneeling of the corresponding user. The sub-domain S3 between the front sacral area S1 and the posterior sacral area S2.

The pants-type sanitary napkin 1 has a front-rear direction L extending toward the front side and the body rear side of the user, a width direction W perpendicularly intersecting in the front-rear direction, and an inner direction T1 and an inward direction toward the user. The thickness direction T in which the outer direction T2 of the opposite side extends.

The pants-type sanitary napkin 1 is provided with an absorbent main body 10 and a chassis 20. The absorbent body 10 includes a body top sheet 11 having liquid permeability, a body film 12 having liquid impermeability, and an absorber 13 disposed between the body top sheet 11 and the body film 12, and a body Rear sheet 14. The chassis 20 is disposed in the outer direction T2 of the absorbent body 10, and has an exterior top sheet 21 and an exterior sheet 22.

Fig. 2 is a developed plan view showing a state in which the pants-type sanitary napkin 1 shown in Fig. 1 is unfolded. The expanded top view shown in Figure 2, It is a figure which extended the expansion-stretching member until the state which consists of the main-body top sheet|sheet 11 and the main-body back sheet| Fig. 3 is a cross-sectional view taken along line A-A shown in Fig. 2. Fig. 4 is a cross-sectional view showing a cross section of the pants-type sanitary napkin in the width direction and a cross section in the front-rear direction.

The pants-type sanitary napkin 1 has a front waistband member 41 disposed in a region around the front sill, a rear waistband member 42 disposed in a region around the squat, and a crotch member 43 disposed in the crotch region. The pants-type sanitary napkin 1 of the present embodiment is a front waistband member 41, a rear waistband member 42, and a crotch member 43, and the chassis 20 is continuously formed in the front-rear direction. Further, the pants-type sanitary napkin may include a front waistband member 41 and a rear waistband member 42 without the crotch member, and the front waistband member 41 and the rear waistband member 42 may be connected by an absorbent body.

In the state shown in FIG. 2, the front sulcus surrounding area S1 and the sacral surrounding area S2 are folded so as to overlap the center 1LC in the front-rear direction L of the sanitary napkin 1 by the outer edge of the front belt member 41. The outer edge of the front waistband member 41 is joined to form a pants-type sanitary napkin as shown in Fig. 1. The side joint portion 29 to which the outer edge of the front waistband member 41 and the outer edge of the front waistband member 41 are joined is as shown in Figs. 1 and 2 . The inner side in the front-rear direction of the side joint portion 29 is the underarm region S3.

The main body top sheet 11 is located in the inner direction T1 (inner direction side) of the absorber 13 . As the main body top sheet 11, a liquid permeable sheet or the like such as a non-woven fabric and an apertured plastic film is used.

The body film 12 is disposed outside the absorber 13 The direction T2 side is the inner side T1 side of the chassis 20. As the main film 12, a sheet having liquid impermeability or the like is used.

The absorber 13 is disposed between the body top sheet 11 and the body film 12 to absorb excrement from the user. As the absorber 13, a mixture of pulverized pulp and superabsorbent polymer particles or the like is used. The basis weight of the pulp (Japanese fabric basis weight) is 100 to 800 g/m ² , and the weight of the superabsorbent polymer particles (Japanese fabric basis weight) is 0 to 100 g/m ² . Further, the absorber 13 may be a sheet-shaped air-laid sheet.

The main body rear sheet 14 is disposed on both the outer direction T2 side of the main body film 12 and the inner side T1 side of the main body top sheet 11. The central portion of the main body rear sheet 14 in the width direction W is disposed on the outer side T2 side of the main body film 12. The outer side in the width direction of the center portion of the main body back sheet 14 is folded back toward the inner side in the width direction from the outer edge of the main body film 12, and is disposed on the inner side T1 side of the main body top sheet 11. As the main body back sheet 14, a sheet such as a nonwoven fabric or the like is used. A part of the main body top sheet 11 and the main body back sheet 14 are disposed on the skin surface side of the absorbent body, and constitute a skin side sheet.

The main body rear sheet 14 of the present embodiment is disposed on both the outer direction T2 side of the main body film 12 and the inner side T1 side of the main body top sheet 11, but in the modified example, the main body rear sheet 14 is not disposed on the main body film. The outer direction of 12 can also be on the T2 side. In this modification, it is preferable to have a sheet which covers the outer edge of the top sheet of the main body and constitutes a leak-proof wrinkle which will be described later.

The body film 12 and the body back sheet 14 are joined by an adhesive. In Figs. 3 and 5, a non-joining area A1 in which the main body film 12 and the main body back sheet 14 are not joined is shown. Figure 5 is a plan view of the absorbent body. In Fig. 5, the area to which the oblique line is added is the non-joining area A1. In the region other than the non-joining region A1, the main body back sheet and the main film are joined by an adhesive such as an HMA-type adhesive.

The main film 12 and the main body back sheet 14 are not joined in a predetermined region extending from the center in the width direction of the absorber 13 in the width direction. The non-joining area A1 of the main body film 12 and the main body back sheet 14 is provided in a region surrounded by a press portion 80 which will be described later in a plan view. The non-joining area A1 is biased toward the front side more than the center of the front-back direction of the main body rear sheet 14.

Further, other constituent members of the pants-type sanitary napkin other than the main body film 12 and the main body back sheet 14 (for example, the main body top sheet and the absorbent body) are also joined by an adhesive. However, in the description of the embodiment, the illustration is omitted.

In the pants-type sanitary napkin 1, a waist-around opening portion 31 into which the user's waist is inserted and a pair of leg-surrounding opening portions 32 into which the user's legs are inserted are formed. The waist peripheral opening portion 31 is formed by being surrounded by the front end edge 20F of the chassis 20 and the rear end edge 20R of the chassis 20.

The chassis 20 is provided with an exterior top sheet 21, an exterior sheet 22, and a stretchable member that is disposed in a state in which at least the width direction W is extended. The length of the front waistband member 41 constituting the chassis 20 in the width direction The length and the length of the rear waistband member 42 in the width direction are longer than the length of the absorbent body 10 in the width direction.

The exterior top sheet 21 is composed of a stretchable nonwoven fabric that expands and contracts in at least the width direction. The exterior rear sheet 22 is disposed on the outer side T2 side of the exterior top sheet 21. The exterior sheet 22 is composed of a non-stretchable nonwoven fabric.

The exterior top sheet 21 has a front outer top sheet 24 on the side of the front side S1 and a rear side top sheet 25 on the side of the rear side S2. The front outer topsheet 24 and the rear outer topsheet 25 are separated in the front-rear direction L. The exterior rear sheet 22 is disposed across the front sill surrounding area S1, the subgingival area S3, and the posterior condyle area S2.

The front end edge 24F of the front exterior top sheet 24 and the front end edge 22F of the exterior rear sheet 22 are located in the front peripheral region S1, and are folded back toward the rear side at the front end edge 20F of the chassis 20. In the portion where the front end edge 24F of the front exterior top sheet 24 and the front end edge 22F of the exterior back sheet 22 are folded back, a waist-side elastic member 26 as a stretchable member is disposed. The waist-surrounding elastic member 26 is fixed between the front outer topsheets 24 in a state of being stretched in the width direction.

The rear end edge 25R of the rear outer top sheet 25 and the rear end edge 22R of the outer rear sheet 22 are located in the rear peripheral region S2, and are folded back toward the front side at the rear end edge 20R of the chassis 20. In the portion where the rear end edge 25R of the rear exterior sheet 25 and the rear end edge 22R of the exterior sheet 22 are folded back, a waist-side elastic member 26 as a stretchable member is disposed. The waist-extension member 26 is stretched in the width direction. It is fixed between the rear side outer top sheets 25.

The rear end edge 24R of the front outer topsheet 24 is located in the underarm region S3 and is located on the front side of the center 1LC of the front and rear direction of the sanitary napkin 1. The front end edge 25F of the rear exterior top sheet 25 is located in the crotch region S3 and is located on the rear side of the center 1LC in the front-rear direction of the sanitary napkin 1.

Between the rear exterior topsheet 25 and the exterior backsheet 22, a stretch member 27 around the leg as a stretchable member is disposed. The leg-surrounding elastic member 27 has a first region 27A that is disposed from the outer edge of the leg-surrounding elastic member 27 toward the inner side in the width direction along the leg-opening portion, and an inner region that extends from the first region toward the inner side in the width direction. The second area 27B.

The absorbent body 10 has a press portion 80 that presses the skin-side sheet and the absorbent body in the thickness direction. In the press section 80 of the present embodiment, the main body top sheet 11 constituting the absorbent body 13 and the skin surface side sheet is compressed in the thickness direction. In the press section 80, since the absorber 13 and the body top sheet 11 are compressed in the thickness direction, the body fluid discharged toward the body top sheet 11 can be introduced into the absorber 13 through the body top sheet 11.

The press portion 80 has a drain port press portion 81, a front side press portion 82, and a rear side press portion 83. The drain port press portion 81, the front side press portion 82, and the rear side press portion 83 are continuous in the front-rear direction L. The press section 80 is considered to be annular in a plane. In the fifth drawing, the range of the front-rear direction of the drain port press portion 81, the range of the front-end direction of the front side press portion 82, and the range of the front-rear direction of the rear side press portion 83 are shown.

Further, the press portion may be such that the drain port press portion 81 and the front side press portion 82 are not continuous in the front-rear direction, and the drain port press portion 81 and the rear side press portion 83 may be continuous in the front-rear direction L, and the drain port press portion may be 81. One of the front side press portion 82 and the rear side press portion 83 may be constituted by a plurality of divided press portions. The press portion 80 may be a ring shape in a plan view.

The drain port press portion 81 is located on both outer sides in the width direction than the drain port facing portion disposed to face the drain port of the user. The drain port press portion 81 extends in the front-rear direction. The excretory port facing portion is a region that is held by the pair of excretory port press portions 81. The excretory opening facing portion is a region including an inner edge 32E in which the leg peripheral opening portion 32 is disposed in the front-rear direction, and extends from the inner edge 32E toward the front-rear direction L. The excretory opening facing portion of the present embodiment is located further forward than the center 1LC in the front-rear direction of the sanitary napkin 1, and is located on the inner side in the front-rear direction than the side joint portion 29.

The drain port press portion 81 has a first convex portion 811 that protrudes inward in the width direction W, and a second convex portion 812 that is located forward of the first convex portion 811 and protrudes outward in the width direction, and is located at the first The third convex portion 813 that protrudes toward the outer side in the width direction W at the rear of the convex portion 811. The second convex portion 812, the first convex portion 811, and the third convex portion 813 are connected in the front-rear direction.

The center 81LC of the front-rear direction L of the excretory port press portion 81 is in the extended state, is located in the crotch region S3, and is located on the front side of the center 1LC in the front-rear direction of the sanitary napkin 1. Drainage port press section 81 The center 81LC of the front-rear direction L is located in the first convex portion 811. The first convex portion 811 is an intermediate point 814 from the vertex (inner edge) of the first convex portion 811 and the vertex of the second convex portion 812 to the vertex (inner edge) of the first convex portion 811 and the third convex portion 813 The range up to the middle point 815 of the vertex. More preferably, the center 81LC of the front-rear direction L of the excretory opening press portion 81 may coincide with the apex (inner edge) of the first convex portion 811.

Further, the inner edge 32E of the leg peripheral opening portion 32 is disposed in the range of the first convex portion 811 in the front-rear direction L. The distance between the center 81LC of the front and rear direction of the drain port press portion 81 and the center 1LC of the front and rear direction of the napkin 1 is 10 mm or more and 90 mm or less, and more preferably 40 mm or more and 60 mm or less. Further, the length of the absorbent body 13 in the width direction is 80 mm or more and 100 mm or less, and the interval between the pair of first convex portions is preferably 35 mm or more and 45 mm or less. The length of the absorbent body of the present embodiment in the width direction was 90 mm, and the distance between the pair of first convex portions was 40 mm. Further, the distance in the present embodiment is the distance in the extended state of the absorbent article.

The front side press portion 82 has a pair of first front side press portions 821 extending in the front-rear direction on the front side of the drain port press portion 81, and a front end edge of the pair of first front side press portions 821 connected to the width The second front side press portion 822 extending in the direction. The rear end edge of the first front side press section 821 and the front end edge of the drain port press section 81 are connected. The boundary between the first front side press portion 821 and the drain port press portion 81 is located in a convex portion that protrudes inward in the width direction.

The rear side press portion 83 has: at the drain port press portion 81 A pair of first rear side press portions 831 extending in the front-rear direction on the rear side, and a second rear side press portion 832 connected to the rear end edges of the pair of first rear side press portions 831 and extending in the width direction . The front end edge of the first rear side press portion 831 and the rear end edge of the drain port press portion 81 are connected. The boundary between the first rear side press portion 831 and the drain port press portion 81 is located in a convex portion that protrudes inward in the width direction.

In addition, the first front side pressurizing portion 821 and the first rear side press portion 831 may be inclined with respect to a straight line along the front-rear direction L, and may be a straight line along the front-rear direction L and the first front-side press portion 821. The angle formed (sharp side) is 45 degrees or less. On the other hand, the second front side press portion 822 and the second rear side press portion 832 may be inclined with respect to a straight line along the width direction W, and may be a straight line along the width direction W and a second front side press portion. The angle formed by the 822 or the like (the acute angle side) is 45 degrees or less.

A pair of front side press portions 84 extending in the front-rear direction are formed on the outer side in the width direction of the front side press portion 82. A pair of rear side press portions 85 extending in the front-rear direction are formed on the outer side in the width direction of the rear side press portion 83. The front side press portion 84 and the front side press portion 82 are separated in the width direction. The rear side press part 85 and the rear side press part 83 are separated in the width direction. The rear end edge of the front side press portion 84 is located on the front side of the front end edge of the drain port press portion 81. The front end edge of the rear side press portion 85 is located on the rear side of the rear end edge of the drain port press portion 81.

The rear side press portion 85 is located before and after the sanitary napkin 1 The center 1LC of the direction is further rearward and does not overlap the center 1LC of the front and rear direction of the sanitary napkin 1. The front side press portion 84 is located forward of the center 1LC of the front and rear direction of the napkin 1 and does not overlap the center 1LC of the front and rear direction of the napkin 1 .

The basis weight of the absorbent body of the present embodiment (Japanese fabric basis weight) is not constant. The absorbent body 13 has a portion having a higher basis weight (Japanese fabric basis weight) and a lower portion. For example, the weight of the absorbent body (Japanese fabric basis weight) of the portion in which the front side press portion 82 is formed is lower than the weight of the absorbent body (Japanese fabric basis weight) at the center in the width direction of the facing portion of the discharge opening. . In addition, the weight of the absorbent body (Japanese fabric basis weight) at the center of the width direction of the excretory opening facing portion is larger than the weight of the absorbent body (Japanese fabric basis weight) of the portion where the excretory opening press portion 81 is formed. high. Specifically, the weight of the absorber (Japanese fabric unit area weight) at the center of the width direction of the excretory opening facing portion is 600 g/m ² , and the absorbent body of the portion where the excretory port press portion 81 is formed is paid. The basis weight of the fabric is 300 g/m ² . The weight of the absorbent body (Japanese fabric basis weight) at the center in the width direction of the excretory mouth facing portion is twice the weight of the absorbent body (Japanese fabric basis weight) of the portion where the excretory opening press portion 81 is formed. Further, the weight of the absorbent body (Japanese fabric basis weight) of the portion in which the front side press portion 82 was formed was 150 g/m ² . Further, the absorbent body may be made to have a basis weight (Japanese fabric basis weight).

The absorbent body 10 has a rising-back leak-proof wrinkle. The leakage preventing wrinkles 60 are provided on the outer edge of the absorbent body 10. Anti-wrinkle The pleats 60 are erected wrinkles that are disposed in the inner direction of the absorber 13 . The leakage preventing wrinkles 60 are composed of a main body rear sheet 14 and a leakage preventing and contracting member 15 disposed between the main body rear sheets 14.

The leakage preventing pleats 60 include a joint portion 61 that is joined to the back side member such as the main body top sheet 11 located on the outer side of the leakage preventing pleats 60, and a leakage preventing and contracting member 15 The constricted portion 62 that is not joined to the back side member and is contracted in the front-rear direction by the leakage preventing elastic member 15. In the leakage preventing wrinkles 60, the engaging portions 61 at which the main body back sheet 14 and the body top sheet 11 are joined are additionally shown obliquely. The joint portion 61 has a first joint portion 61A located outside the contraction portion 62 in the width direction, and a second joint portion 61B located on both outer sides of the contraction portion 62 in the front-rear direction.

The back side member may be a member located on the outer side of the leakage preventing wrinkles 60. For example, the main body top sheet 11, the main body film 12, and the main body back sheet 14 may be exemplified. The leakage preventing wrinkles 60 are formed by the joint portion 61 as a base end portion when worn, and the constricted portion 62 is in contact with the skin of the user as a vertex portion. That is, the joint portion is a rising base end portion that is a leak-proof wrinkle. Since the main body back sheet 14 has water repellency, it is possible to prevent leakage of menstrual blood or the like discharged from the user by leakage preventing wrinkles.

Further, the constricted portion 62 is located between the second joining portion 61B on the front side and the second joining portion 61B on the rear side. The contraction portion 62 is a portion in which the leakage preventing elastic member 15 is substantially contracted in the front-rear direction, and the contraction force is not exerted, except for the portion where the leakage preventing elastic member 15 is disposed.

The press portion 80 extends in the front-rear direction more than the contraction portion 62. Therefore, the front end edge of the press portion is located forward of the front end edge of the constricted portion. Further, the rear end edge of the press portion is located further rearward than the rear end edge of the constricted portion. Further, the press portion 80 is located forward of the front end edge of the leakage preventing and contractible member 15. The press portion 80 is located forward of the rear end edge of the leakage preventing and contractible member 15.

The length of the absorbent article in the stretched state can be measured by the following method. In the extended state, the waist-extension member, the stretch-around member around the leg, and the leak-proof member are stretched. In more detail, the wrinkles of the absorbent article from the natural state to the stretchable member cannot be visually observed. The state extended until the confirmed state.

When the absorbent article is sealed in a package or the like, it is taken out from the package and used in an atmosphere of (20-2 to 20+2) ° C and relative humidity (60-5 to 60 + 5)% RH. A sample was placed for 12 hours. Next, the side joint portion is completely separated by cold spraying or the like to unfold the absorbent article. Next, the absorbent article was stretched and fixed to the sheet until it was stretched, and was measured by a ruler along the measurement target portion.

Further, the basis weight of the absorbent body (Japanese fabric basis weight) can be measured by the following method. The portion of the measurement (Japanese fabric basis weight) was cut out from the absorbent article, and portions other than the absorber such as the top sheet and the main film were removed, and the weight of the absorbent was measured. The basis weight (Japanese fabric basis weight) was calculated from the area of the portion measured by the weight of the absorbent body and the basis weight (Japanese fabric basis weight).

(2) Installation status of shorts type sanitary napkin

Next, the installation state of the pants-type sanitary napkin thus configured will be described. Fig. 6 (a) and (b) show the deformed state of the pants-type sanitary napkin of the present embodiment. Fig. 6(a) is a cross-sectional view taken along the line A-A of Fig. 1 . Fig. 6(b) is a cross-sectional view taken along the line B-B of Fig. 1 . Fig. 6(c) is a view showing a modified form of the absorbent article of the comparative example. Fig. 6(c) is a cross-sectional view taken along the line A-A of Fig. 1.

When the pants-type sanitary napkin is held by the user's legs in the installed state, the force toward the inner side in the width direction is applied to the pants-type sanitary napkin. As shown in Fig. 6 (a), in the cross section passing through the center of the discharge port press portion 81 in the front-rear direction, the excretion port press portion 81 is used as a starting point, and is disposed in the inner side in the width direction of the drain port press portion 81. The mouth facing portion is convexly deformed inward. Therefore, the face of the excretory mouth is attached to the vaginal opening. Since the main body back sheet 14 and the main body film 12 are not joined in the center in the width direction of the absorbent body, the main body film 12 and the absorbent body 13 are separated from the chassis 20 and the main body rear sheet 14, and are bulged inward toward the inner side.

Further, as shown in Fig. 6(b), in the cross section passing through the rear side press portion 85 and the rear side press portion 83, the rear side press portion 85 is made wider than the rear side press portion 83 in the width direction. Since the rigidity of the outer side becomes high, the portion provided with the rear side press portion 85 is easily maintained in a flat state. In the cross section of the front side press portion 84 and the front press portion 82, the rigidity of the outer side of the front side press portion 82 in the width direction is also increased by the front side press portion 84, so that the front side is provided. The side of the side press section 84 It is easy to maintain a flat state. A flat region is provided at four outer sides in the width direction of the front side press portion 82 and the two outer sides in the width direction of the rear side press portion 83, so that the region surrounded by the press portion 80 is pushed toward the inner side in the width direction. The pressure is raised so that the region surrounded by the press portion 80 is bulged toward the inner side.

Further, in the state shown in Fig. 6(a), the contraction portion 62 of the leakage preventing wrinkle 60 causes only the main body rear sheet 14 to stand inward, and the side end edge of the absorbent body does not face inward. Stand on the side of the direction. In the thickness direction T, the position of the outer edge of the absorbent body 10 and the position of the drain port press portion 81 are substantially identical. Therefore, when the force from the user toward the inner side in the width direction is applied to the absorbent body 10, the force in the width direction is transmitted to the drain port press portion 81 through the outer edge of the absorbent body 10. The drain port press portion 81 is a portion where the thickness of the absorbent body 10 is recessed. Therefore, when the force in the width direction is applied to the drain port press portion 81, the force toward the inner side in the width direction and the inner direction T1 is applied to the inner side in the width direction of the drain port press portion 81. Therefore, the discharge port facing portion held by the drain port press portion 81 is swelled toward the inward direction side.

Here, Fig. 6(c) is a pants type sanitary napkin of a comparative example. In the pants-type sanitary napkin of the comparative example, the length of the constricted portion in the front-rear direction is longer than the length of the press portion in the front-rear direction, and the side end edge of the absorbent body is deformed inward by the constricted portion. In the state shown in Fig. 6(c), the shrinkage portion of the leakage preventing wrinkles is not limited to the main body back sheet, and the outer edge of the absorbent body is raised toward the inward direction side. The position of the outer edge of the absorbent body is located on the inner side of the position of the drain port press portion 81. because When the force from the user toward the inner side in the width direction is applied to the absorbent body, the force transmitted to the inner side in the width direction and the outer direction T2 is transmitted to the drain port press portion 81 through the outer edge of the absorbent body. When the force in the inner side and the outer direction in the width direction is applied to the drain port press portion 81, the force in the outer side in the width direction and the outer direction are applied to the inner side in the width direction of the drain port press portion 81. Therefore, the discharge port facing portion held by the drain port press portion 81 is swelled toward the outer side.

(3) Function and effect

Because it is a shorts type sanitary napkin, the user does not need to be installed in the underwear, and can wear the shorts type sanitary napkin directly. In the shorts type sanitary napkin, since the opening around the waist and the opening around the leg are formed, when the leg and the waist are inserted, the center position in the front-rear direction is almost constant for the body for any user.

As a result of various investigations by the applicant, it has been found that, in general, the vaginal opening of the user is located on the front side in the center of the front and rear direction of the underpants (underwear and pants-type sanitary napkin) in the underarm region.

The center 81LC of the drain port press portion 81 in the front-rear direction is located between the center of the front-rear direction of the chassis 20 of the present embodiment and the side joint portion 29. When the pants-type sanitary napkin is held by the center portion 81LC of the front-rear direction of the excretory port press portion 81, the excretion port press portion 81 is deformed toward the inner side in the width direction and the inward direction side is raised.

In the front-rear direction, the center 81LC of the front-rear direction of the drain port press portion 81 is located in the region facing the vaginal opening, so The portion which is raised from the excretory port press portion 81 as a starting point can be in contact with the vaginal opening. The swollen portion of the absorbent body 13 is attached to the vaginal opening of the user, and the leakage of body fluid can be suppressed.

Since the pants-type sanitary napkin of the present embodiment is of a shorts type, the position of the absorbent body 13 in the front-rear direction is less likely to be deviated, and for any user, the swollen portion of the absorbent body 13 can be brought into contact with the vaginal opening, which can be suppressed. Leakage occurred.

The weight of the absorber 13 (Japanese fabric basis weight) at the center in the width direction of the discharge port facing portion is more than the weight of the absorber 13 (Japanese fabric basis weight) at the portion where the drain port press portion 81 is formed. high. Therefore, the center of the width direction of the discharge port facing portion is inwardly expanded in the state before the deformation. Therefore, when gripped by the user's leg, the center of the width direction of the excretory opening facing portion is easily attached to the vaginal opening of the user. Moreover, the absorption capacity of the face of the excretory mouth becomes high, and the menstrual blood is difficult to spread. Therefore, even when a large amount of menstrual blood is absorbed, leakage is unlikely to occur. The basis weight (Japanese fabric basis weight) of the absorbent body 13 in which the portion of the excretory port press portion 81 is formed is relatively low. For example, when the weight (Japanese fabric basis weight) of the absorbent body 13 in the portion where the excretory port press portion 81 is formed is too high, the portion where the excretory port press portion 81 is formed becomes hard, and the excretory port press portion 81 comes into contact with the leg. Will produce a strange feeling. However, since the weight of the absorbent body (Japanese fabric basis weight) of the portion in which the excretory port press portion 81 is formed is relatively low, it is possible to suppress the strange feeling when the excretory port press portion 81 comes into contact with the leg.

The center 81LC of the front and rear direction of the drain port press portion 81 is Since it is located in the 1st convex part 811, when the absorber 13 is hold|maintained by a leg, the absorber 13 is easy to deform by the 1st convex part 811 as a starting point. Therefore, the portion of the first convex portion 811 of the left and right excretory opening press portion 81 is deformed so as to be easily inflated toward the inner side, and is bonded to the vaginal opening of the user.

The inner edge 32E of the opening portion 32 around the leg is the innermost portion of the user's leg in the width direction. Since the position of the inner edge 32E of the leg-opening portion 32 in the front-rear direction and the position of the first convex portion 811 in the front-rear direction overlap each other, the force held by the user's leg is easily applied to the drain port press portion 81. The convex portion 811 can more reliably form an expanded portion that comes into contact with the vaginal opening of the user.

Further, when the pants-type sanitary napkin is excessively contracted in the front-rear direction by the leakage preventing wrinkles 60, as shown in Fig. 6(c), the outer edge of the absorbent body 10 is directed inward by the leakage preventing and contracting member 15. T1 is protruded, and the region of the center of the absorbent body 10 in the width direction (the inner side in the width direction of the leakage preventing elastic member) is deformed so as to protrude in the outward direction T2. In other words, the pants-type sanitary napkin 1 is convexly deformed in the outward direction in the cross section in the width direction. In this deformed state, the user's body will be away from the face of the drain opening, and the fit will be lowered.

However, the press portion 80 of the pants-type sanitary napkin of the present embodiment extends outward in the front-rear direction from the contracted portion 62 of the leakage preventing wrinkle 60. The region where the press portion 80 is formed is relatively rigid as compared with the region where the press portion 80 is not formed. Therefore, even if the contracting force is applied to the inner side in the front-rear direction by the constricted portion 62, the rigidity of the press portion 80 can be maintained and absorbed. The shape of the body 13. Therefore, it is possible to suppress the pants-type sanitary napkin from being convexly deformed in the outward direction T2. The outer edge of the absorbent body 10 is maintained in a flat state, and the center of the absorbent body in the width direction (the inner side in the width direction of the leakage preventing elastic member) protrudes inward from the drain port press portion 81 as a starting point. The way the deformation. Therefore, the pants-type sanitary napkin 1 is convexly deformed in the inward direction in the cross section in the width direction.

The vaginal opening of the user is located on the front side of the center of the pants-type wearing article (underwear, pants-type sanitary napkin) in the front-rear direction, and the center of the pants-type wearing article in the front-rear direction and the vaginal opening of the user. The distance is usually 40mm or more and 60mm or less. The shorts type sanitary napkin is a drain press press section by arranging the center of the front and rear direction of the drain port press portion 81 at the position of the face of the user's vaginal opening 81 by the user's legs holding the pants type sanitary napkin. The 81 is deformed toward the inner side in the width direction, and is expanded toward the inward direction side of the portion of the drain port press portion 81 held by the pair. Therefore, the swollen portion of the absorbent body is attached to the vaginal opening of the user, and the leakage of the body fluid can be suppressed.

The length of the absorbent body in the width direction is 80 mm or more and 100 mm or less, and the interval between the pair of first convex portions 811 is 35 mm or more and 45 mm or less. It is necessary to fit the size of the undergarment (the length of the crotch portion in the width direction) of the underpants type sanitary napkin to be used in the underwear. Generally, the length of the absorbent body in the width direction is 75 mm or less. The pants-type sanitary napkin that is used in the underwear is because the length of the absorbent body 13 in the width direction is relatively short, so that the menstrual blood leakage occurs, and the excretory opening facing portion cannot be sufficiently inflated in the inward direction side. Deformed in the state. Shorts type of this embodiment The sanitary napkin 1 can sufficiently ensure the width of the absorbent body 13 and improve the absorption performance without being matched to the size of the underwear. Further, the distance between the pair of first convex portions 811 is 35 mm or more and 45 mm or less. By ensuring that the distance between the pair of first convex portions 811 is wide and the inner direction side is raised higher, the adhesion can be further improved.

A second front side press portion 822 extending in the width direction is formed in the front side of the drain port press portion 81. By providing the second front side press portion 822, it is possible to prevent accidental deformation (twisting) when the force is applied from the outer side in the width direction on the front side of the portion facing the vaginal opening (the portion facing the excretory opening). In addition, if the weight of the front side (the weight per unit area of Japanese fabric) is too high, the sense of dissimilarity is likely to occur. However, the weight of the absorbent body (Japanese fabric basis weight) of the portion in which the front side press portion 82 is formed is lower than the weight of the absorbent body (Japanese fabric basis weight) at the center in the width direction of the facing portion of the discharge opening. , you can suppress the strange feeling.

When the rigidity of the outer side of the front side press part 82 in the width direction and the rigidity of the outer side of the rear side press part 83 in the width direction are low, when the pants-type sanitary napkin 1 is attached, the outer side is compressed by the width direction. The outer side of the front side press part 82 in the width direction and the outer side of the rear side press part 83 in the width direction are bulged toward the inner side. In this state, when the compression force of the underpants-type sanitary napkin toward the inner side in the width direction is more effective, the portion that is held by the inner side in the width direction is held by the portion of the front side press portion and the portion that is held by the rear side press portion is easy. Deformed on the outward side.

However, by providing the front side press portion 84 and the back side press In the portion 85, the front side press portion 84 and the rear side press portion 85 are maintained in a flat state, and it is difficult to lift the outer side in the width direction of the front side press portion 82 and the outer side in the width direction of the rear side press portion 83 in the inward direction. Therefore, the outer side in the width direction of the front side press portion 82 and the outer side in the width direction of the rear side press portion 83 can be held at the same position (the position in the vertical direction) as the front side press portion 82 and the rear side press portion 83. In this state, when the compression force of the underpants-type sanitary napkin 1 toward the inner side in the width direction acts, the outer side in the width direction of the front side press portion 82 and the outer side in the width direction of the rear side press portion 83 can be transmitted to the lower portion of the absorber 13 An upward force is applied to bulge the center of the absorber in the width direction toward the inward direction.

The front side press portion 84 and the rear side press portion 85 are not overlapped with the center 1LC of the sanitary napkin 1 in the front-rear direction. In the panty-type sanitary napkin 1, the side joint portion 29 is formed in a state in which the center 1LC of the front and rear direction of the napkin 1 is folded, and the center portion 1LC in the front-rear direction of the napkin 1 is folded. . Therefore, a fold line is formed on the center 1LC of the front and rear direction of the sanitary napkin 1. For example, when the front side press portion 84 and the rear side press portion 85 are overlapped with the center 1LC of the front and rear direction of the napkin 1, the flat state of the front side press portion 84 and the rear side press portion 85 is maintained. Will decrease. However, since the front side press portion 84 and the rear side press portion 85 are not overlapped with the center 1LC of the sanitary napkin 1 in the front-rear direction, the front side press portion 84 and the rear side press portion 85 can be maintained in a flat state.

The joint region of the main body film 12 and the main body back sheet 14 is not provided in the center in the width direction of the absorber 13, but is provided in the absorber body. The center of the width direction of 13 is shifted outward in the width direction. Therefore, the absorbent body 13 located in the main film 12 and in the inner direction T1 of the main body film 12 is at the center in the width direction of the absorbent body 13, and is away from the main body rear sheet 14 and the outer direction T2 of the main body rear sheet 14. The chassis 20 becomes deformable. Therefore, in the center in the width direction of the absorber 13, the absorber is deformed so as to be more freely deformable, and the absorber is easily expanded toward the inward direction side. Therefore, the fit can be improved.

The pants-type sanitary napkin of this embodiment is installed directly by the user (not through the underwear). Therefore, it has the structure which can improve the mounting feeling. Specifically, the weight of the absorbent body of the discharge port facing portion (Japanese fabric basis weight) is 700 g/m ² or less. When the amount of the absorber of the excretion port facing portion is too high, the drain port press portion 81 becomes too hard, and the mounting feeling may be deteriorated. The weight of the absorbent body (Japanese fabric basis weight) of the excretory mouth facing portion is 700 g/m ² or less, and the excretory port press portion 81 does not become too hard, and the feeling of dissimilarity can be suppressed.

Further, the thickness of the absorbent core which is further forward than the facing portion of the excretory opening and the thickness of the absorbent core which is further rearward than the facing portion of the excretory opening are 3.0 mm or less. If the thickness of the absorbent core which is more forward and rearward than the facing portion of the drain opening is too thick, it will cause suffocation and a strange feeling when installed. In the present embodiment, the thickness of the absorbent core which is further forward than the facing portion of the drain opening and the thickness of the absorbent core which is further rearward than the facing portion of the drain opening are 2.8 mm. On the other hand, the thickness of the absorbent core of the discharge port facing portion is 8.0 mm or more. By sufficiently securing the thickness of the absorbent core facing the excretory opening, the fit to the vaginal opening can be improved.

Further, the exterior top sheet constituting the chassis has stretchability in the width direction. The exterior top sheet is disposed to cover the entire circumference of the user's waist. Therefore, the chassis of the pants-type sanitary napkin is integrally attached to the circumference of the user's waist, and the pants-type sanitary napkin is not separated from the body or slack, and the user can obtain a feeling of attachment such as underwear.

(4) Other embodiments

As described above, the content of the present invention is disclosed by the embodiments of the present invention, but the description and drawings which constitute a part of this disclosure are not to be construed as limiting the invention. It will be apparent to those skilled in the art that a wide variety of alternative embodiments, embodiments, and techniques are available.

The pants-type sanitary napkin may have an intermediate sheet disposed between the absorbent body and the surface sheet. Further, the pants-type sanitary napkin may have a plurality of surface sheets.

Further, the center of the front and rear direction of the drain port press portion may be in a convex portion having a shape protruding outward in the width direction. Even if the center of the front-rear direction of the excretory opening press portion is in the convex portion having a shape protruding outward in the width direction, when the leg is held by the leg, the absorber is deformed from the convex portion, and it is easy to be held. The portion at the center in the front-rear direction of the left and right excretory opening press portions is deformed so as to expand toward the inward direction side.

1‧‧‧ Shorts sanitary napkin

Surrounding area of S1‧‧‧

S2‧‧‧After the surrounding area

S3‧‧‧胯下域

10‧‧‧Absorbable ontology

11‧‧‧ body top sheet

13‧‧‧Acceptor

14‧‧‧ Body back sheet

20‧‧‧Chassis

20F‧‧‧ front edge

20R‧‧‧ rear edge

21‧‧‧Outer top sheet

22‧‧‧After the outer sheet

24‧‧‧Front exterior top sheet

25‧‧‧Back side top sheet

27A‧‧‧1st area

27B‧‧‧2nd area

29‧‧‧ Side joint

32‧‧‧ openings around the legs

32E‧‧‧ inside edge

41‧‧‧ Front belt members

42‧‧‧After waistband components

43‧‧‧ Pants components

60‧‧‧ leak-proof wrinkles

61‧‧‧ joint part

61A‧‧‧1st joint

61B‧‧‧2nd joint

62‧‧‧Contraction

80‧‧‧Squeeze Department

Claims (6)

A pants-type sanitary napkin having a front-rear direction extending toward a front side of a user's body and a rear side of the body, a width direction perpendicularly intersecting the front-rear direction, an inner direction facing the user, and an outer side facing the inner side. The direction includes: a region around the anterior humerus disposed on the front side of the body, a region surrounding the posterior condyle disposed on the posterior side of the body, and a region disposed between the fore and aft region and the surrounding region of the posterior condyle The underarm region of the armpit includes an absorbent body provided with a skin sheet and an absorbent body, a front waistband member disposed in the peripheral region of the front sill, and a rear waistband member disposed in the surrounding area of the breech region, a side joint portion to which the outer edge of the front waistband member and the outer edge of the rear waistband member are joined, and a pair of leg peripheral opening portions disposed around the leg of the user and disposed on the user a peripheral portion around the waist and a pressing portion of the skin sheet and the absorbent body pressed in the thickness direction, and the press portion is opposite to the user's excretion opening a pair of discharge port press sections extending in the front-rear direction, the two sides of the discharge port facing portion in the width direction, wherein the center of the front and rear direction of the drain port press portion is located in the aforementioned submerged area The center of the front-rear direction of the cotton is further on the front side, and the portion of the opening around the leg that is located at the inner side in the width direction The portion which is disposed on the front side in the front-rear direction of the sanitary napkin and which is disposed in the front-rear direction, wherein the absorbent body has a rising-type leak-proof wrinkle, and the pants type The sanitary napkin is a back side member having a side closer to the outer side than the leakage preventing wrinkles, and the leakage preventing wrinkles include a contraction portion that is contracted by the leakage preventing and contracting member that expands and contracts in the front-rear direction, and the first contraction portion. The joint portion is provided on the outer side in the width direction of the contraction portion, and is joined to the back side member, and the second joint portion is formed on both outer sides in the front-rear direction from the contraction portion. The first joint portion is provided separately and joined to the back side member, and a front end edge of the press portion is located forward of a front end edge of the contraction portion, and a rear end edge of the press portion is located at a contraction portion The rear edge is more rearward. The pants-type sanitary napkin of the first aspect of the invention, wherein the absorbent body of the center of the discharge opening facing portion in the width direction (Japanese fabric basis weight) is larger than the pressure portion of the drain port formed Part of the absorbent body (Japanese fabric basis weight) is higher. The pants-type sanitary napkin of claim 1 or 2, wherein the drain port press portion has an outer side facing the width direction A convex portion having a shape in which the side or the inner side in the width direction protrudes, and a center of the drain port press portion in the front-rear direction is located in the convex portion. The underpants-type sanitary napkin of claim 3, wherein the inner edge of the opening around the leg is located in a range in which the convex portion is disposed in the front-rear direction. The pants-type sanitary napkin according to claim 1 or 2, wherein a distance between a center of the front and rear direction of the drain port press portion and a center of the sanitary napkin in the front-rear direction is 40 mm or more and 60 mm or less. The pants-type sanitary napkin according to the first or second aspect of the invention, wherein the length of the absorbent body in the width direction is 80 mm or more and 100 mm or less, and the interval between the center of the pair of discharge port press portions in the front-rear direction is in the width direction. It is 35mm or more and 45mm or less.