JP2016104081A - Absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve fitting property of an absorbent article to a wearer.SOLUTION: Compression grooves in which, at least a front surface sheet and a part of an absorber are compressed in a thickness direction, comprise: a pair of first vertical compression grooves along a vertical direction in a front area; a pair of second vertical compression grooves comprising a first lateral compression groove which is coupled to the pair of vertical compression grooves and along the lateral direction, and a second lateral compression groove which is disposed on a vertical center side, relative to the first lateral compression groove, and along the lateral direction on a lateral inside relative to the pair of first vertical compression grooves, and along the vertical direction on the center area; and a pair of third vertical compression grooves along the vertical direction on a lateral inside relative to the pair of second vertical compression grooves. The second vertical compression grooves, and the third vertical compression grooves are separated from the first vertical compression grooves, and disposed on a vertical center side relative to the second lateral compression groove. One of a vertical front side end of each second vertical compression groove and a vertical front side end of each third vertical compression groove is disposed on a vertical front side, relative to the other, in which, the other is disposed to the vertical center side, relative to the first vertical compression grooves.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an absorbent article such as a sanitary napkin.

  As an absorbent article such as a sanitary napkin, for example, a liquid-retaining absorbent body is provided between a liquid-permeable top sheet and a liquid-impermeable back sheet, and at least one of the top sheet and the absorbent body. And a portion provided with a compressed groove in which the portion is compressed in the thickness direction. In addition, the left groove, which is a pair of grooves extending in the longitudinal direction and curving convexly outward in the width direction, at the center portion in the longitudinal direction of the absorbent article, that is, both ends in the width direction of the excretory part facing portion An absorbent article provided with a right groove has been proposed (see, for example, Patent Document 1). In such an absorbent article, when a compressive force toward the inner side in the width direction is applied at the time of wearing, the excretory part-facing portion rises toward the wearer's skin side with the left and right grooves as flexible shafts. Therefore, an absorptive article fits in a wearer's excretion part and can control the excretion leak.

Japanese Patent No. 4757039

  However, the absorbent article described in Patent Document 1 is provided with a pair of side grooves extending to the front part in the longitudinal direction of the absorbent article on the outer side in the width direction than the left groove and the right groove. Therefore, the compressive force toward the inner side in the width direction acting at the time of wearing is transmitted to the front part in the longitudinal direction of the absorbent article by the pair of side grooves, and the front part in the longitudinal direction is also raised on the skin side of the wearer. End up. If it does so, the fitting property of an absorptive article to a wearer's lower abdomen will fall.

  This invention is made | formed in view of the above conventional problems, The objective is to improve the fitting property of the absorbent article with respect to a wearer.

A main invention for achieving the above object has a longitudinal direction, a lateral direction, and a thickness direction intersecting with each other, and includes a front region on the front side in the longitudinal direction and a central region in the longitudinal direction, The absorbent article is provided with a compression groove in which a top sheet and a part of the absorbent body are compressed in the thickness direction, and the compression groove is formed in the front region in a pair of first directions along the longitudinal direction. A longitudinal compression groove, a first transverse compression groove connected to the pair of first longitudinal compression grooves along the transverse direction, and a center side in the longitudinal direction with respect to the first transverse compression groove; A second horizontal compression groove along the horizontal direction inside the vertical compression groove, and a pair of second vertical compression grooves along the vertical direction and the pair of first compression grooves in the central region. A pair of third longitudinal compression grooves along the longitudinal direction on the inner side in the transverse direction than the two longitudinal compression grooves; And the second vertical compression groove and the third vertical compression groove are separated from the first vertical compression groove, and are located on the center side in the vertical direction with respect to the second horizontal compression groove, One of the longitudinal front end of the second longitudinal compression groove and the longitudinal front end of the third longitudinal compression groove is located on the longitudinal front side rather than the other, The other is an absorbent article characterized by being positioned closer to the center in the longitudinal direction than the first longitudinal compression groove.
Other features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

  ADVANTAGE OF THE INVENTION According to this invention, the fitting property of the absorbent article with respect to a wearer can be improved.

It is a top view of the skin side of a napkin. It is a schematic sectional drawing of the vertical direction center part of a napkin. It is explanatory drawing of the positional relationship of a compression groove | channel and a slip prevention adhesive agent. It is explanatory drawing of the positional relationship of a compression groove and an absorber. 5A to 5C are explanatory views of the cross-sectional shape of the absorbent body at the positions AA, BB, and CC in FIG. 1 when the napkin is attached. It is a schematic plan view by the side of the skin of the napkin in 2nd Embodiment. 7A to 7D are schematic plan views of the skin side of the napkin in the third embodiment.

At least the following matters will become apparent from the description of the present specification and the accompanying drawings.
It has a longitudinal direction, a transverse direction, and a thickness direction intersecting with each other, and includes a front region on the front side in the longitudinal direction, and a central region in the longitudinal direction, and at least a part of the topsheet and the absorbent body An absorbent article provided with a compressed groove compressed in a thickness direction, wherein the compressed groove is formed in the front region with a pair of first longitudinal compressed grooves along the longitudinal direction, and along the lateral direction. A first horizontal compression groove connected to the pair of first vertical compression grooves; and a center side in the vertical direction with respect to the first horizontal compression groove; and on an inner side in the horizontal direction with respect to the pair of first vertical compression grooves. A second horizontal compression groove along the horizontal direction, and a pair of second vertical compression grooves along the vertical direction in the central region, and an inner side in the horizontal direction than the pair of second vertical compression grooves. A pair of third longitudinal compression grooves along the longitudinal direction, the second longitudinal compression grooves, and the first The longitudinal compression groove is separated from the first longitudinal compression groove, and is positioned closer to the center side in the longitudinal direction than the second lateral compression groove, and the front end in the longitudinal direction of the second longitudinal compression groove One of the third longitudinal compression grooves and the front end in the longitudinal direction is located on the front side in the longitudinal direction with respect to the other, and the other is located in the longitudinal direction with respect to the first longitudinal compression groove. It is an absorbent article characterized by being located on the center side in the direction.
According to such an absorbent article, it is possible to bulge the lateral central portion of the central region toward the skin side while keeping the front region in a flat surface shape, so the fit of the front region to the wearer's lower abdomen And the fit of the central region to the excretion part of the wearer can be improved. Further, the lateral central portion of the boundary portion between the front region and the central region can be raised to the skin side at a height lower than that of the central region. Therefore, the center part of the absorptive article can be gradually raised from the front side to the center side in the longitudinal direction, and the fit of the absorptive article to the wearer can be further improved.

In this absorbent article, the front end in the longitudinal direction of the second longitudinal compression groove is located on the front side in the longitudinal direction relative to the front end in the longitudinal direction of the third longitudinal compression groove. It is the absorbent article characterized by doing.
According to such an absorbent article, when the absorbent article is mounted, the compressive force applied to the longitudinal front end portion of the second longitudinal compression groove is directed to the longitudinal center portion of the third longitudinal compression groove. You can make it. Therefore, the center part of the horizontal direction of a center area | region becomes easy to protrude by the skin side, and the fit property of the center area | region with respect to a wearer's excretion part can be improved more.

In such an absorbent article, in order to fix the absorbent article to the underwear, an adhesive bonded to the skin side surface of the underwear is provided on the back surface of the absorbent article, and the absorbent article When viewed in the direction, the second longitudinal compression groove on one side in the lateral direction of the pair of second longitudinal compression grooves is more in the lateral direction than the one end in the lateral direction of the adhesive. It is an absorbent article characterized by being located on one side.
According to such an absorbent article, when the absorbent article is mounted, the portion on the outer side in the lateral direction from the second longitudinal compression groove can be raised on the skin side without being regulated by the shape of the underwear. Therefore, the excrement which flowed in the horizontal direction can be dammed up at a portion outside in the horizontal direction with respect to the second vertical compression groove, and the leakage of excrement can be suppressed.

In such an absorbent article, in order to fix the absorbent article to the underwear, an adhesive bonded to the skin side surface of the underwear is provided on the back surface of the absorbent article, and the absorbent article The absorbent article is characterized in that the second lateral compression groove and the adhesive overlap when viewed in the direction.
According to such an absorbent article, since the front region is bonded to the underwear, the front region can be easily maintained by a flat surface shape, and the fit property of the front region to the wearer's lower abdomen can be improved.

In such an absorbent article, in order to fix the absorbent article to the underwear, an adhesive bonded to the skin side surface of the underwear is provided on the back surface of the absorbent article, and the absorbent article When viewed in the direction, the region where the second vertical compression groove on one side in the horizontal direction of the pair of second vertical compression grooves is provided is the horizontal direction of the pair of first vertical compression grooves. This is an absorbent article characterized in that it is divided into a region where the first longitudinal compression groove on one side is provided and a region where the region where the adhesive is provided are combined.
According to such an absorbent article, since it can suppress that the compressive force which acted on the center area | region is transmitted to a front area via underwear, it is easy to keep a front area | region into a flat surface shape, and a wearer The fitting property of the front region with respect to the lower abdomen can be improved.

In such an absorbent article, at least one of the second longitudinal compression groove and the third longitudinal compression groove is such that a central portion in the longitudinal direction is convex outward in the lateral direction. The absorbent article is characterized by being curved.
According to such an absorbent article, since a relatively wide area of the central part in the lateral direction of the central area can be stably raised on the skin side, the fit of the central area to the excretory part is improved. Can be made.

This absorbent article is an absorbent article characterized in that an end on the front side in the vertical direction of the second vertical pressing groove is inclined toward the outside in the horizontal direction.
According to such an absorbent article, the front end portion in the longitudinal direction of the second longitudinal compression groove can be along the root of the wearer's thigh, and the fit of the absorbent article can be improved. it can.

Such an absorbent article is characterized in that the second lateral compression groove forms an annular compression groove together with the compression groove connected to the second lateral compression groove.
According to such an absorbent article, since the lateral rigidity of the front region can be increased, the front region can be easily maintained by a flat surface shape, and the fit property of the front region to the lower abdomen of the wearer can be further improved. it can.

Such an absorbent article, wherein the absorbent body has an absorbent core that absorbs excrement, and the weight of the absorbent core that is located in the lateral center between the pair of third longitudinal compression grooves This is an absorbent article characterized in that the weight of the absorbent core is higher than the pair of third longitudinal compression grooves than the pair of third longitudinal compression grooves.
According to such an absorbent article, since the central region is easily raised on the skin side, the fit of the central region to the excretion part of the wearer can be further improved.

Such an absorbent article, wherein the absorbent body has an absorbent core that absorbs excreta, and is in the first position in the longitudinal direction where the central portion in the longitudinal direction of the third longitudinal compression groove is located. However, compared with the second position in the longitudinal direction between the second lateral compression groove and the second longitudinal compression groove, the weight of the central portion in the lateral direction of the absorber core is high, and the longitudinal direction The weight of the central portion in the lateral direction of the absorbent core is higher in the second position than in the third position in the longitudinal direction which is the front side in the longitudinal direction than the second lateral compression groove. This is an absorbent article.
According to such an absorbent article, since the center part in the horizontal direction of the absorbent article gradually rises from the front side in the longitudinal direction to the center side, the fit of the absorbent article to the wearer is further improved. Can be improved.

In this absorbent article, the compression grooves are formed in a pair of fourth longitudinal compression grooves along the longitudinal direction in the rear region on the rear side in the longitudinal direction of the absorbent article and the pair along the lateral direction. A third horizontal compression groove connected to the fourth vertical compression groove, and is located on the center side in the vertical direction with respect to the third horizontal compression groove, and in the horizontal direction with respect to the pair of fourth vertical compression grooves. The absorbent article is characterized in that a compressed groove along the lateral direction is not provided on the inner side of the absorbent article.
According to such an absorbent article, since the rigidity in the lateral direction is lower in the rear region than in the front region, the rear region can be curved along the wearer's buttocks, and the wearer The fit of the rear region to the buttocks can be improved.

=== First Embodiment ===
The embodiment will be described by taking a sanitary napkin (hereinafter referred to as a napkin) as an example of an absorbent article.
FIG. 1 is a plan view of the skin side of the napkin 1. FIG. 2 is a schematic cross-sectional view of the central portion of the napkin 1 in the vertical direction. FIG. 3 is an explanatory diagram of the positional relationship between the compressed grooves 11 to 18 and the slip prevention adhesive 10. FIG. 4 is an explanatory diagram of a positional relationship between the compressed grooves 11 to 18 and the weight of the absorbent core 30. 5A to 5C are explanatory views of the cross-sectional shape of the absorbent body 3 at each position AA, BB, CC in FIG. 1 when the napkin 1 is attached.

  The napkin 1 has a vertical direction, a horizontal direction, and a thickness direction that intersect with each other (orthogonal in the present embodiment), a front region 1a on the front side in the vertical direction, a central region 1b in the vertical direction, and a vertical direction And a rear region 1c on the rear side. In the napkin 1, the front region 1a is in contact with the lower abdomen of the wearer, the central region 1b is in contact with the crotch of the wearer (vaginal opening which is an excretion part), and the rear region 1c is in contact with the buttocks of the wearer. Shall be worn. Moreover, the side which contacts a wearer among thickness directions is called the skin side, and the side which contacts underwear is called a non-skin side.

  In the napkin 1, as shown in FIG. 2, a liquid-permeable top sheet 2 (for example, a nonwoven fabric or a porous synthetic resin film) and a liquid-impermeable back sheet 4 (for example, a synthetic resin film) are used. In the middle, the absorbent body 3 is provided, and a pair of side sheets 5 (for example, a nonwoven fabric having hydrophobicity or water repellency) is provided at both ends in the lateral direction. The absorber 3 includes an absorber core 30 (for example, one made of pulverized pulp or a superabsorbent polymer) that absorbs and retains excrement such as menstrual blood, and a liquid-permeable covering material 31 that covers the core (30). For example, a tissue etc.). The side sheet 5 is folded so that one end thereof covers the lateral end of the skin side surface of the top sheet 2 and the other end covers the lateral end of the non-skin side of the back sheet 4. It is folded. The absorbent core 30 may be an absorbent body that is not covered with the covering material 31. Moreover, although not shown in figure, you may apply | coat an adhesive agent to the interface of each member 2-5, and may join each member 2-5.

  The planar shape (FIG. 1) of the napkin 1 is a vertically long, substantially rectangular shape, and is curved so that both ends in the vertical direction are convex outward. The planar shape of the absorber 3 is also the same shape as the planar shape of the napkin 1, and is slightly smaller. However, the planar shape of the napkin 1 or the absorber 3 is not limited to that shown in FIG.

  At both ends of the napkin 1 in the vertical direction, the top sheet 2 and the back sheet 4 are joined by, for example, heat embossing to form a joined portion 6. Moreover, the surface sheet 2 and the side sheet | seat 5 are joined to the both ends of the skin side surface of the napkin 1 by the heat embossing process, for example, and the side junction part 7 is formed. Thus, the absorber 3 is enclosed between the top sheet 2, the back sheet 4, and the side sheet 5.

  In addition, on the skin side surface of the napkin 1, for example, by heat embossing, the surface sheet 2 and a part or all of the absorbent body 3 are compressed in the thickness direction from the surface sheet 2 side (skin side). 18 (details will be described later) are provided, and the top sheet 2 and the absorber 3 are joined and integrated. In this embodiment, the compression grooves 11 to 18 are compression grooves having the low compression part 40 and the high compression part 41 which is a deep groove part compressed at a higher pressure than the low compression part 40. Not limited to this, it may be a compressed groove having a constant depth. Further, the compressed grooves 11 to 18 may be compressed grooves in which the grooves are continuous, for example, like the first vertical compressed groove 11 in the front region 1a, or the second vertical compressed groove 14 in the central region 1b or the second As in the case of the three longitudinal compression grooves 15, the grooves are discrete, and the low compression part 40, the high compression part 41, and the non-compression part 42 may be alternately compressed grooves.

  Further, in order to fix the napkin 1 to the underwear, a non-skin side surface (rear surface) of the napkin 1 is provided with an anti-slip adhesive 10 that is bonded to the skin side surface of the underwear (for example, a hot melt adhesive) Is applied). In FIG. 3, the anti-slipping adhesive 10 is virtually shown on the skin side surface of the napkin 1. In this embodiment, as the anti-slipping adhesive 10, a pattern in which eight rectangular adhesive bands 10 a extending in the vertical direction are arranged at intervals in the horizontal direction is exemplified, but the present invention is not limited thereto. For example, the number of vertically long adhesive bands 10a may be a pattern other than eight, or a pattern in which horizontally long adhesive bands are arranged at intervals in the vertical direction.

And in the napkin 1 of 1st Embodiment, as shown in FIG. 1, as a compression groove | channel, a pair of 1st vertical compression groove | channel 11 along a longitudinal direction and a pair of 1st 1st compression groove | channel along the front direction 1a. A first lateral compression groove 12 connected to each longitudinal front end of the longitudinal compression groove 11, a center side in the longitudinal direction relative to the first lateral compression groove 12, and lateral to the pair of first longitudinal compression grooves 11. Inside the direction, a second lateral compression groove 13 along the lateral direction is provided.
In the central region 1b, as a compression groove, a pair of second longitudinal compression grooves 14 along the longitudinal direction, and a pair of third longitudinal compression along the longitudinal direction inside the pair of second longitudinal compression grooves 14 in the lateral direction. A groove 15 is provided.
The rear region 1 c is provided with compressed grooves 16 to 18 in which the compressed grooves 11 to 13 provided in the front region 1 a are arranged symmetrically with respect to the longitudinal center line of the napkin 1. That is, in the rear region 1c, as a compression groove, a pair of fourth vertical compression grooves 16 along the vertical direction and a pair of the fourth vertical compression grooves 16 along the horizontal direction are connected to the respective rear ends in the vertical direction. The third horizontal compression groove 17 and the fourth horizontal compression groove along the horizontal direction on the center side in the vertical direction with respect to the third horizontal compression groove 17 and on the inner side in the horizontal direction with respect to the pair of fourth vertical compression grooves 16. 18 are provided.

  For example, the first vertical compression groove 11 along the vertical direction is curved so as to protrude outward in the horizontal direction, and the first horizontal compression groove 12 along the horizontal direction is convex toward the front side in the vertical direction. It is curved to become. That is, the compressed groove along the vertical direction in the present invention is not limited to the compressed groove along the vertical direction, but has a length in the vertical direction from one end in the vertical direction to the other end of the compressed groove. However, a compressed groove extending in the longitudinal direction is also included, which is longer than the lateral length from one end in the lateral direction to the other end of the compressed groove. Similarly, the compressed groove along the horizontal direction is not limited to the compressed groove along the horizontal direction, but the length in the horizontal direction from one end of the compressed groove to the other end in the horizontal direction is longer. Also included is a compressed groove extending in the lateral direction that is longer than the length in the vertical direction from one end in the longitudinal direction to the other end of the compressed groove.

  As described above, in the napkin 1 of the first embodiment, the pair of second vertical compression grooves 14 and the pair of third vertical compression grooves 15 are provided in the central region 1b, and there are two pairs of compression grooves along the vertical direction. It is provided heavily. Therefore, when the napkin 1 is worn, when a compressive force acting inward in the lateral direction is applied to the central region 1b by the wearer's crotch force, as shown in FIG. Starting from the three vertical compression grooves 15, the absorbent body 3 (napkin 1) is broken, and the absorbent portion 3A between the pair of third vertical compression grooves 15 is raised on the skin side in the thickness direction. More specifically, the center position in the thickness direction of the absorber 3 in the third longitudinal compression groove 15 is lower than the center position in the thickness direction of the part 3A of the absorber between the pair of third longitudinal compression grooves 15. It is located on the non-skin side. Therefore, when the compressive force is applied, the absorbent body portion 3A between the pair of third longitudinal compression grooves 15 becomes a pair of absorbent body portions 3B (second longitudinal compression portion) located on both sides in the lateral direction of the absorbent body portion 3A. It is supported from below by the absorbent body part 3B) between the groove 14 and the third longitudinal compression groove 15 and lifted to the skin side, and the lower part of the absorbent body part 3A is compressed and protrudes to the skin side. To curve. Therefore, in the portion where the pair of compressed grooves along the vertical direction is double, the central portion in the horizontal direction rises higher on the skin side than the single portion (for example, FIG. 5B).

  Thus, the excretory part is formed between the pair of third vertical compression grooves 15, that is, the central part in the lateral direction in the central region 1 b, and the part that comes into contact with the excretion part of the wearer rises higher on the skin side. The fitting property of the napkin 1 with respect to can be improved, and the gap between the napkin 1 and the wearer can be reduced. Therefore, the absorbability of excrement by the napkin 1 can be improved, leakage of excrement can be suppressed, and the uncomfortable feeling at the time of wearing can also be reduced.

  Further, when the pair of compressed grooves along the vertical direction is double, compared to a single case, the pair of compressed grooves on the inner side in the horizontal direction (here, between the pair of third vertical compressed grooves 15), that is, The lateral width of the part that comes into contact with the excretion part tends to be narrow. Therefore, when the compressive force toward the inner side in the lateral direction is applied, the part that contacts the excretion part is not easily deformed so as to wave, and the part that contacts the excretion part can be raised more reliably on the skin side. .

  If the second vertical compression groove 14 or the third vertical compression groove 15 in the central region 1b is connected to the first vertical compression groove 11 in the front region 1a or extends to the front region 1a, it is worn. The compressive force acting on the central region 1b due to the person's crotch tightening force is transmitted to the front region 1a via the second vertical compression groove 14 and the third vertical compression groove 15. If it does so, the front area | region 1a will also interlock | cooperate with the center area | region 1b, and the center part of the horizontal direction will protrude to the skin side.

On the other hand, in the napkin 1 of the first embodiment, the second vertical compression groove 14 and the third vertical compression groove 15 are separated from the first vertical compression groove 11, and the second vertical compression groove 14 and the 3rd vertical compression groove | channel 15 are located in the center side of the vertical direction rather than the 2nd horizontal compression groove | channel 13 of the front area | region 1a. Therefore, the compressive force acting on the central region 1b is difficult to be transmitted to the front region 1a, and it is possible to prevent the lateral central portion of the front region 1a from rising to the skin side, as shown in FIG. 5A. The 1a absorber 3 (napkin 1) can be kept flat.
Furthermore, the front area | region 1a is provided with the 2nd horizontal compression groove | channel 13 along a horizontal direction. Therefore, the lateral rigidity of the front region 1a is increased, and the front region 1a is more easily maintained in a flat surface shape.
Thus, the front area | region 1a can be made to follow a wearer's lower abdominal part by keeping the front area | region 1a in flat surface shape, and the fitting property of the napkin 1 with respect to a lower abdominal part improves. Therefore, the leakage of excrement flowing into the front region 1a can be suppressed, and the uncomfortable feeling at the time of wearing can be reduced.

  In the napkin 1 of the first embodiment, one of the longitudinal front end of the second longitudinal compression groove 14 and the longitudinal front end of the third longitudinal compression groove 15 is more than the other. Located on the front side in the longitudinal direction, the other is located on the center side in the longitudinal direction with respect to the first longitudinal compression groove 11. Specifically, the front end (one side) in the vertical direction of the second vertical compression groove 14 is positioned on the front side in the vertical direction from the front end (the other side) in the vertical direction of the third vertical compression groove 15; The front end (the other side) in the vertical direction of the third vertical compression groove 15 is located closer to the center side in the vertical direction than the first vertical compression groove 11. Therefore, only a pair of second vertical compression grooves 14 is provided in the longitudinal front portion of the central region 1b, that is, the boundary portion between the front region 1a and the central region 1b, and the pair of compression grooves along the vertical direction is single. A site is formed. Therefore, when a compressive force directed inward in the lateral direction acts on the central region 1b by the wearer's crotch tightening force, as shown in FIG. 5B, the part of the absorbent body between the pair of second vertical compression grooves 14 3C gently rises to the skin side in the thickness direction.

  Thus, in the napkin 1 of 1st Embodiment, the horizontal center part of the boundary part of the front area | region 1a and the center area | region 1b is higher on the skin side than the front area | region 1a, and is the skin side rather than the center area | region 1b. It can be raised to the skin side at an intermediate height. Therefore, the horizontal center part of the napkin 1 can be gradually (stepwise) raised to the skin side from the front side in the vertical direction to the center side. In other words, by providing a portion (FIG. 5B) that protrudes to the skin side at an intermediate height, the front region 1a is easily maintained in a flat surface shape, and the central region 1b is easily raised to the skin side. Therefore, the fitting property of the napkin 1 with respect to a wearer can be improved more.

  In the napkin 1 of the first embodiment, the first horizontal compression groove 12 is connected to the pair of first vertical compression grooves 11, and the third horizontal compression groove 17 is connected to the pair of fourth vertical compression grooves 16. It is connected. Therefore, the excrement that has flowed to the front side in the vertical direction can be dammed by the pair of first vertical compression grooves 11 and the first horizontal compression groove 12, and the excrement that has flowed to the rear side in the vertical direction can be The fourth vertical compression groove 14 and the third horizontal compression groove 17 can be dammed, and the vertical leakage of excreta can be suppressed.

  Further, as shown in FIG. 1, the longitudinal position of the longitudinal rear end of the first longitudinal compression groove 11 and the longitudinal position of the longitudinal forward end of the second longitudinal compression groove 14 are as follows. , Are overlapping. Therefore, the excrement flowing in the lateral direction can be dammed up at the overlapping portion of the first vertical compression groove 11 and the second vertical compression groove 14, and the lateral leakage of the excrement can be suppressed. However, the present invention is not limited to this. For example, as shown in FIG. 6 described later, the second longitudinal compression groove 14 may be positioned closer to the center in the longitudinal direction than the first longitudinal compression groove 11.

  Further, in the napkin 1 of the first embodiment, in the central region 1b, the second longitudinal compression groove 14 located on the outer side in the lateral direction has the third longitudinal length located on the inner side in the lateral direction. It is located on the front side in the vertical direction from the front end in the vertical direction of the compressed groove 15. Therefore, when the napkin 1 is attached, the laterally inward compressive force acting on the longitudinal front end of the second longitudinal compression groove 14 is indicated by the third longitudinal compression groove as shown by an arrow D in FIG. It can be directed to the center of 15 vertical directions. Therefore, since it is possible to increase the compressive force acting on the central portion of the central region 1b in the vertical direction and the horizontal direction, that is, the portion that contacts the excretion portion, the portion that contacts the excretion portion is more likely to rise on the skin side, The fitting property of the napkin 1 with respect to an excretion part can be improved more.

  Further, the second longitudinal compression groove 14 is positioned on the rear side in the longitudinal direction with respect to the longitudinal rear side end of the third vertical compression groove 15 in the second longitudinal direction. The compressive force acting on the longitudinal rear end of the longitudinal compression groove 14 can be directed to the longitudinal central portion of the third longitudinal compression groove 15, and the portion that contacts the excrement is raised on the skin side. It becomes easy to do. However, the present invention is not limited thereto, and the longitudinal front (or rear) end of the third longitudinal compression groove 15 is longer than the longitudinal front (or rear) end of the second longitudinal compression groove 14. It may be located on the front side (or the rear side).

  Also, if the central portion in the vertical direction of the second vertical compression groove 14 and the central portion in the vertical direction of the third vertical compression groove 15 are curved so as to protrude toward the inner side in the horizontal direction. The compressive force tends to concentrate on the part where the space between the compression grooves is the narrowest, and only that part tends to rise to the skin side. On the other hand, in the napkin 1 of the first embodiment, the longitudinal center portion of the second longitudinal compression groove 14 and the longitudinal center portion of the third longitudinal compression groove 15 are directed outward in the lateral direction. Curved to be convex. Therefore, the center part of the vertical direction and the horizontal direction of the center area | region 1b can be raised to the skin side stably by a comparatively wide surface, and the fitting property of the napkin 1 with respect to an excretion part can be improved. In addition, by increasing the area of the portion that protrudes on the skin side and contacts the excrement, the absorbability of the excrement is improved, and the excrement leakage can be suppressed.

  On the other hand, it is easier for the napkin 1 to follow the base of the wearer's thigh when the second longitudinal compression groove 14 is curved so as to be convex inward in the lateral direction. Then, in the napkin 1 of 1st Embodiment, the edge part of the front side of the vertical direction of the 2nd vertical pressing groove 14 is inclined toward the outer side of the horizontal direction. That is, the second longitudinal compression groove 14 is provided such that the front end portion in the longitudinal direction opens outward in the lateral direction. Similarly, the end portion on the rear side in the vertical direction of the second vertical compression groove 14 may be inclined toward the outside in the horizontal direction. By doing so, the napkin 1 can easily follow the base of the wearer's thigh at the position where the front and rear end portions of the second vertical compression groove 14 are provided in the longitudinal direction, and the fit of the napkin 1 is improved. Can be made.

  However, the shape of the 2nd vertical compression groove 14 or the 3rd vertical compression groove 15 is not restricted to said shape. For example, one of the second vertical compression groove 14 and the third vertical compression groove 15 is curved so as to be convex outward in the horizontal direction, and the other is curved so as to be convex inward in the horizontal direction. It may be curved so that both are convex inward in the lateral direction, or the longitudinal front end of the second longitudinal compression groove 14 is not inclined outward in the lateral direction. May be.

  Further, in this embodiment, the compressed grooves 11 to 18 are symmetric with respect to the center line in the lateral direction. However, the shape is not limited to this and may be asymmetric. That is, among the pair of first to third vertical compression grooves 11, 14, and 15, at least one of the first to third vertical compression grooves 11, 14, and 15 on one side in the horizontal direction has the above-described arrangement relationship and the above-described shape. If so, the above-described effect can be obtained on one side of the napkin 1 in the lateral direction.

  Moreover, in this embodiment, the external shape of the napkin 1 and the compressed grooves 11 to 18 are symmetrical with respect to the center line in the vertical direction. Therefore, the wearer can wear the napkin 1 without being aware of the longitudinal direction of the napkin 1, and even if the napkin 1 is worn so that the rear region 1c contacts the lower abdomen and the front region 1a contacts the buttocks. The above effects can be obtained.

  Further, as described above, in order to fix the napkin 1 to the underwear, the non-skin side surface (rear surface) of the napkin 1 is provided with the anti-slip adhesive 10 (adhesive) that is adhered to the skin side surface of the underwear. Yes. And in the napkin 1 of 1st Embodiment, as shown in FIG. 3, the 2nd vertical compression groove | channel of the horizontal direction one side among a pair of 2nd vertical compression grooves 14 seeing the napkin 1 in the thickness direction. 14 is located on one side (outside) in the lateral direction from the end 10 b on one side in the lateral direction of the anti-slip adhesive 10. That is, when the napkin 1 is viewed in the thickness direction, the second longitudinal compression groove 14 does not overlap the anti-slipping adhesive 10.

  Therefore, when the napkin 1 is attached, the portion where the second vertical compression groove 14 is provided and the portion outside in the lateral direction are not fixed to the underwear, and the movement is not restricted to the shape of the underwear. Therefore, when a compressive force directed inward in the lateral direction is applied when the napkin 1 is attached, the portion outside in the lateral direction from the second longitudinal compression groove 14 is lifted from the underwear with the second longitudinal compression groove 14 as a starting point. Can be raised on the skin side. That is, the cross-sectional shape of the napkin 1 can be made W-shaped (not shown), and the excrement that flows in the lateral direction can be dammed at the lateral end of the napkin 1, and the lateral leakage of excrement Can be suppressed. Moreover, when the cross-sectional shape of the napkin 1 is a W-shape, the napkin 1 can easily follow along the part of the large labia from the base of the thigh, and the fit of the napkin 1 can be improved.

  However, the present invention is not limited to the above, and the second longitudinal compression groove 14 and the shift preventing adhesive 10 may partially overlap. For example, if the outer end in the horizontal direction of the second vertical compression groove 14 is located on the outer side in the horizontal direction with respect to the outer end in the horizontal direction of the anti-slipping adhesive 10, the second vertical compression groove 14 As compared with the case where the anti-slipping adhesive 10 is provided on the outer side in the lateral direction, the lateral end of the napkin 1 is likely to rise to the skin side, and excrement leakage can be suppressed.

  On the other hand, when the napkin 1 is viewed in the thickness direction, the second lateral compression groove 13 in the front region 1 a overlaps the anti-slipping adhesive 10. Therefore, since the area | region in which the 2nd horizontal compression groove | channel 13 was provided is adhere | attached on underwear, the front area | region 1a becomes easy to be maintained by flat surface shape, and can improve the fitting property of the napkin 1 with respect to a lower abdomen. The entire region of the second lateral compression groove 13 is not limited to overlap with the displacement preventing adhesive 10, and a part of the second lateral compression groove 13 may overlap with the displacement prevention adhesive 10.

  Further, when the napkin 1 is viewed in the thickness direction, a region where the second vertical compression groove 14 on one side in the horizontal direction of the pair of second vertical compression grooves 14 is provided is a pair of first vertical compression grooves 11. The region where the first vertical compression groove 11 on one side in the horizontal direction is provided and the region where the anti-slipping adhesive 10 is provided are separated from each other. In other words, the region where the second longitudinal compression groove 14 is provided is divided without being connected to the region where the first longitudinal compression groove 11 is provided, even through the region where the anti-slipping adhesive 10 is provided. Yes. Therefore, it can suppress that the compressive force which acted on the center area | region 1b at the time of mounting | wearing of the napkin 1 is transmitted to the front area | region 1a via underwear, and the front area | region 1a becomes easy to be maintained by flat surface shape. Therefore, the fitting property of the napkin 1 with respect to the lower abdomen can be improved.

  In this embodiment (FIG. 3), the pair of second longitudinal compression grooves 14 are in the above-described positional relationship with the anti-slipping adhesive 10 and the first longitudinal compression groove 11, but not limited thereto. If at least the second longitudinal compression groove 14 on one side in the lateral direction has the above-described positional relationship with the anti-slipping adhesive 10 and the first longitudinal compression groove 11, the above-described one side in the lateral direction of the napkin 1 An effect is obtained.

  Further, the napkin 1 shown in FIG. 1 is not provided with a pair of wings extending outward in the lateral direction, but may be a napkin provided with a pair of wings. Usually, the adhesive is also provided on the back of the wing, but when the napkin 1 is worn, the wing is folded back and the wing adhesive is adhered to the non-skin side of the underwear. It is not included in the adhesive.

  Moreover, in the napkin 1 of 1st Embodiment, as shown in FIG. 4, the fabric weight of the absorber core 30 which the absorber 3 has changes with places, and the fabric weight of the absorber core 30 is a step toward the center part of a horizontal direction. In addition, the weight of the absorbent core 30 is gradually increased toward the central portion in the vertical direction. 4 is a cross-sectional view of the absorbent core 30 cut in the transverse direction and the thickness direction at the center in the longitudinal direction of the napkin 1, and is a diagram on the right side of the napkin 1. FIG. These are sectional drawings which cut the absorber core 30 in the vertical direction and thickness direction in the center of the horizontal direction of the napkin 1. FIG.

Specifically, the vertical and horizontal central portions of the napkin 1, that is, between the second horizontal compression groove 13 and the fourth horizontal compression groove 18 in the vertical direction, and a pair of third vertical compression grooves in the horizontal direction. The basis weight of the first part 3a of the absorbent core 30 located between 15 is highest (example: 700 g / m ² ), and then the second part of the absorbent core 30 located on both lateral sides of the first part 3a. The basis weight of the part 3b is high (example: 380 g / m ² ), and then the front side and the rear side in the longitudinal direction from the first part 3a and the second part 3b, and the first lateral compression groove 12 and the third lateral compression The basis weight of the third portion 3c of the absorber core 30 located on the center side in the vertical direction is higher than the groove 17 (example: 300 g / m ² ), and the absorption is on the front side and the rear side in the vertical direction with respect to the third portion 3c. The basis weight of the fourth portion 3d of the body core 30 is the lowest (example: 200 g / m ² ). Furthermore, in the 1st site | part 3a of the absorber core 30, from the position corresponding to the longitudinal front end of the 2nd vertical compression groove 14, the position corresponding to the longitudinal rear end of the 2nd horizontal compression groove 13 As a result, the basis weight of the absorbent core 30 gradually decreases.

  That is, the basis weight of the absorbent core 30 (first portion 3 a) located in the lateral center between the pair of third longitudinal compression grooves 15 is located on the outer side in the lateral direction than the pair of third longitudinal compression grooves 15. It is higher than the basis weight of the absorbent core (second portion 3b). That is, the basis weight of the absorber core 30 at the portion that contacts the excretion portion is higher. Therefore, for example, compared to a case where the basis weight of the absorbent core 30 is constant, the portion that contacts the excretory part is raised higher on the skin side, so that the fit of the napkin 1 to the excretory part can be further improved. Moreover, since the absorbability of excrement improves, the excrement leak can be suppressed.

  Further, the first position in the vertical direction (for example, p1 in FIG. 4) where the central portion in the vertical direction of the third vertical compression groove 15 is located is the distance between the second horizontal compression groove 13 and the second vertical compression groove 14. The weight of the central portion in the horizontal direction of the absorber core 30 is higher than the second vertical position (for example, p2), and the second position in the vertical direction (for example, p2) is second. Compared to the third vertical position (e.g., p3) that is the front side in the vertical direction relative to the horizontal compression groove 13, the weight of the central portion in the horizontal direction of the absorbent core 30 is higher.

  That is, the basis weight of the absorbent core 30 (lateral central portion) gradually increases from the front side in the vertical direction of the napkin 1 to the central side. Therefore, the front region 1a that contacts the lower abdomen is easily maintained by a flat surface shape, and the central region 1b that contacts the excretory portion is likely to rise higher on the skin side, and the boundary portion between the front region 1a and the central region 1b is It becomes easy to be raised at the middle height. Therefore, since the napkin 1 is easily raised from the front side in the vertical direction of the napkin 1 to the skin side, the fit of the napkin 1 can be further improved.

=== Second Embodiment ===
FIG. 6 is a schematic plan view of the skin side of the napkin 1 in the second embodiment. Unlike the napkin 1 (FIG. 1) of the first embodiment, the napkin 1 of the second embodiment has an asymmetric shape with respect to the center line in the vertical direction, and is closer to the buttocks than the front region 1a. The rear region 1b that is in contact has a longer length in the vertical direction and a wider width.

  Similarly to the napkin 1 of the first embodiment, the napkin 1 of the second embodiment also includes a pair of first vertical compression grooves 11, a first horizontal compression groove 12, and a second horizontal compression groove 13 in the front region 1a. A pair of second longitudinal compression grooves 14 and a pair of third longitudinal compression grooves 15 are provided in the central region 1b. However, the rear region 1c is provided with a pair of fourth vertical compression grooves 16 along the vertical direction and a third horizontal compression groove 17 connected to the pair of fourth vertical compression grooves 16 along the horizontal direction. 3 on the center side in the vertical direction with respect to the horizontal compression grooves 17 and on the inner side in the horizontal direction with respect to the pair of fourth vertical compression grooves 16, the compression grooves along the horizontal direction, that is, the fourth of the napkin 1 of the first embodiment. A compression groove corresponding to the lateral compression groove 18 is not provided.

  Therefore, as compared with the front region 1a, the rear region 1c has a lower lateral rigidity, so that it can be curved along the buttock, and the fit of the napkin 1 to the heel can be improved. Therefore, it is possible to suppress the leakage of excrement that has flowed to the rear region 1c, and it is possible to reduce a sense of incongruity at the time of wearing. In particular, the napkin 1 having an asymmetric shape with respect to the center line in the vertical direction, such as the napkin 1 of the second embodiment, is surely recognized in the longitudinal direction, so the second lateral compression groove 13 is provided. The attached front region 1a is in contact with the lower abdomen, and the rear region 1c, which is not provided with a compression groove along the lateral direction, is mounted in contact with the buttocks. That is, since the napkin 1 is definitely attached so as to improve the fit to the lower abdomen and the buttocks, it can be said that the configuration of the compressed grooves 11 to 17 (FIG. 6) is preferable.

=== Third Embodiment ===
7A to 7D are schematic plan views on the skin side of the napkin 1 in the third embodiment. In the front region 1a of the napkin 1 of the third embodiment, it is on the center side in the vertical direction with respect to the first horizontal compression groove 12, and in the horizontal direction inside the pair of first vertical compression grooves 11, along the horizontal direction. A connected compression groove 21 that is connected to the second horizontal compression groove 13 and that forms an annular compression groove 20 together with the second horizontal compression groove 13 is provided.

  The annular compression groove 20 is a closed compression groove, that is, a groove whose shape returns from a certain point on the compression groove to a certain point when the groove is traced along the compression groove. . Examples of the annular compression groove 20 include a substantially rectangular compression groove shown in FIG. 7A, a hook-like compression groove shown in FIG. 7B, and a heart-shaped compression groove shown in FIGS. 7C and 7D. However, it is not limited to this, and may be, for example, a perfect circle shape or an elliptical shape. Further, the annular compressed groove 20 is not limited to a continuous groove, and may be a groove partially having a non-compressed portion.

  Such an annular compression groove 20 has a width in the lateral direction and also has a width in the longitudinal direction. Therefore, by providing the annular compression groove 20 in the front region 1a, the rigidity in the lateral direction of the front region 1a is increased. Can be increased. Therefore, it is easy to keep the front region 1a with a flat surface shape, and the fit of the napkin 1 to the lower abdomen can be further improved.

  As mentioned above, the said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. Further, the present invention can be changed or improved without departing from the gist thereof, and needless to say, the present invention includes equivalents thereof.

  For example, in the above embodiment, a sanitary napkin is used as an example of the absorbent article. However, the present invention is not limited to this, and the present invention can be applied to other absorbent articles such as a panty liner and an incontinence pad.

DESCRIPTION OF SYMBOLS 1 Napkin (absorbent article), 1a front area | region, 1b center area | region, 1c back area | region, 2 surface sheet, 3 absorber, 30 absorber core, 31 coating | covering material, 4 back surface sheet, 5 side sheet, 6 junction part, 7 Side joint 10 Detachable adhesive (adhesive), 11 1st longitudinal compression groove, 12 1st lateral compression groove, 13 2nd lateral compression groove, 14 2nd longitudinal compression groove, 15 3rd longitudinal compression groove, 16 4th vertical compression groove, 17 3rd horizontal compression groove, 18 4th horizontal compression groove, 20 annular compression groove, 21 connection compression groove, 40 low compression part, 41 high compression part, 42 non-compression part, p1 1st position , P2 second position, p3 third position

A main invention for achieving the above object has a longitudinal direction, a lateral direction, and a thickness direction intersecting with each other, and includes a front region on the front side in the longitudinal direction and a central region in the longitudinal direction, The absorbent article is provided with a compression groove in which a top sheet and a part of the absorbent body are compressed in the thickness direction, and the compression groove is formed in the front region in a pair of first directions along the longitudinal direction. A longitudinal compression groove, a first transverse compression groove connected to the pair of first longitudinal compression grooves along the transverse direction, and a center side in the longitudinal direction with respect to the first transverse compression groove; A second horizontal compression groove along the horizontal direction inside the vertical compression groove, and a pair of second vertical compression grooves along the vertical direction and the pair of first compression grooves in the central region. A pair of third longitudinal compression grooves along the longitudinal direction on the inner side in the transverse direction than the two longitudinal compression grooves; And the second vertical compression groove and the third vertical compression groove are separated from the first vertical compression groove, and are located on the center side in the vertical direction with respect to the second horizontal compression groove, One of the longitudinal front end of the second longitudinal compression groove and the longitudinal front end of the third longitudinal compression groove is located on the longitudinal front side rather than the other, The other is located closer to the center side in the longitudinal direction than the first longitudinal compression groove, and an adhesive bonded to the skin side surface of the underwear is used to fix the absorbent article to the underwear. An area provided on the back surface of the article, where the absorbent article is viewed in the thickness direction, and the second longitudinal compression groove on one side in the lateral direction of the pair of second longitudinal compression grooves is provided. A region of the pair of first longitudinal compression grooves provided with the first longitudinal compression groove on one side in the lateral direction, and the adhesive provided A region a region synthesized that, it is divided, is the absorbent article characterized by. Other features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

Claims (11)

Having a longitudinal direction, a transverse direction, and a thickness direction intersecting each other;
A front region on the front side in the vertical direction, and a central region in the vertical direction,
An absorbent article provided with a compressed groove in which at least a surface sheet and a part of the absorbent body are compressed in the thickness direction,
The compressed groove is
More than the pair of first longitudinal compression grooves along the longitudinal direction in the front region, the first lateral compression grooves connected to the pair of first longitudinal compression grooves along the lateral direction, and the first lateral compression groove. A second lateral compression groove along the lateral direction on the inner side in the lateral direction than the pair of first longitudinal compression grooves, on the center side in the longitudinal direction;
The central region has a pair of second longitudinal compression grooves along the longitudinal direction and a pair of third longitudinal compression grooves along the longitudinal direction inside the lateral direction with respect to the pair of second longitudinal compression grooves. And
The second longitudinal compression groove and the third longitudinal compression groove are separated from the first longitudinal compression groove, and are located closer to the center in the longitudinal direction than the second lateral compression groove,
One of the longitudinal front end of the second longitudinal compression groove and the longitudinal front end of the third longitudinal compression groove is located on the longitudinal front side rather than the other, The other is located on the center side in the longitudinal direction from the first longitudinal compression groove;
Absorbent article characterized by. The absorbent article according to claim 1,
The front end in the longitudinal direction of the second longitudinal compression groove is positioned on the front side in the longitudinal direction relative to the front end in the longitudinal direction of the third longitudinal compression groove;
Absorbent article characterized by. The absorbent article according to claim 1 or 2,
In order to fix the absorbent article to underwear, an adhesive bonded to the skin side surface of the underwear is provided on the back surface of the absorbent article,
When the absorbent article is viewed in the thickness direction, the second longitudinal compression groove on one side in the lateral direction of the pair of second longitudinal compression grooves is on one side in the lateral direction of the adhesive. Located on one side in the lateral direction from the end,
Absorbent article characterized by. It is an absorptive article given in any 1 paragraph of Claims 1-3,
In order to fix the absorbent article to underwear, an adhesive bonded to the skin side surface of the underwear is provided on the back surface of the absorbent article,
When the absorbent article is viewed in the thickness direction, the second lateral compression groove and the adhesive overlap,
Absorbent article characterized by. The absorbent article according to any one of claims 1 to 4, wherein
In order to fix the absorbent article to underwear, an adhesive bonded to the skin side surface of the underwear is provided on the back surface of the absorbent article,
When the absorbent article is viewed in the thickness direction, a region of the pair of second vertical compression grooves provided with the second vertical compression grooves on one side in the horizontal direction is the pair of first vertical compression grooves. The compressed groove is divided into a region where the first vertical compressed groove on one side in the lateral direction is provided, and a region where the region where the adhesive is provided are combined.
Absorbent article characterized by. The absorbent article according to any one of claims 1 to 5,
At least one of the second vertical compression groove and the third vertical compression groove is curved so that a central portion in the vertical direction is convex outward in the horizontal direction;
Absorbent article characterized by. The absorbent article according to any one of claims 1 to 6,
The front end of the second vertical squeezing groove in the longitudinal direction is inclined toward the outer side in the lateral direction;
Absorbent article characterized by. The absorbent article according to any one of claims 1 to 7,
The second lateral compression groove forms an annular compression groove together with the compression groove connected to the second lateral compression groove;
Absorbent article characterized by. The absorbent article according to any one of claims 1 to 8,
The absorber has an absorber core that absorbs excreta,
The absorbent body in which the basis weight of the absorbent core located in the central portion in the lateral direction between the pair of third vertical compression grooves is located on the outer side in the lateral direction than the pair of third vertical compression grooves. Higher than the core weight,
Absorbent article characterized by. The absorbent article according to any one of claims 1 to 9,
The absorber has an absorber core that absorbs excreta,
The longitudinal first position where the longitudinal center of the third longitudinal compression groove is located is between the second lateral compression groove and the second longitudinal compression groove. Compared to two positions, the weight of the central portion in the lateral direction of the absorbent core is high,
The second position in the longitudinal direction is closer to the central portion in the transverse direction of the absorber core than the third position in the longitudinal direction which is the front side in the longitudinal direction with respect to the second lateral compression groove. Have a high basis weight,
Absorbent article characterized by. It is an absorptive article given in any 1 paragraph of Claims 1-10,
The compression groove is connected to a pair of fourth vertical compression grooves along the vertical direction and a pair of fourth vertical compression grooves along the horizontal direction in a rear region on the rear side in the vertical direction of the absorbent article. A third lateral compression groove
There is no compression groove along the horizontal direction on the center side in the vertical direction from the third horizontal compression groove and inside the horizontal direction from the pair of fourth vertical compression grooves,
Absorbent article characterized by.

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