JP2006280765A - Absorbent article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an absorbent article stably retaining leakproof effect of a pocket and favorably fitted to the body shape of a wearer by being favorably curved. <P>SOLUTION: A sanitary napkin 1 is provided with an absorbent body 10 having an absorbing layer and a leakproof layer, and a pair of side sheets 6 and 6 disposed on both sides of a skin abutment face side of the body 10 respectively. The sheet 6 is joined with the body 10 at a first joining line 8 recessed toward the central side in the width direction of the body 10 and a second joining line 9 positioned in the vicinity of the first joining line 8 and extending to cross in the longitudinal direction of the body 10, a pocket 84 being opened in wearing is formed between the first joining line 8 and an inside edge part in the sheet 6, the second joining line 9 is provided with a close part to the inside edge part and a distant part from the inside edge part, and a distance between parts close to the adjoining inside edge parts is shorter than the longitudinal length of the first joining line. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an absorbent article such as a sanitary napkin, a panty liner (cage sheet), and an incontinence pad.

  In an absorbent article such as a sanitary napkin, a technique is known in which pockets are formed on both side portions on the skin contact surface side using side sheets (water repellent nonwoven fabric or the like).

For example, in Patent Document 1, a part on the inner edge side of a liquid barrier sheet that forms a wing portion is disposed on a surface sheet, and the barrier sheet is placed on the surface at a position away from the inner edge. There has been proposed a sanitary napkin that is bonded to a sheet and has a pocket formed between a barrier sheet and a surface sheet.
Patent Document 2 discloses an absorbent article in which the width of the intermediate portion in the longitudinal direction of the absorber is narrower than the width of the front and rear portions, and the inner edge shape of the side nonwoven fabric disposed on both sides of the absorbent article. And a body fluid containment pocket formed between the side nonwoven fabric and the absorbent core without adhering the inner edge side of the side nonwoven fabric to the surface sheet. .

Japanese Utility Model Publication No. 5-51328 JP 2001-327535 A

However, the sanitary napkin described in Patent Document 1 has a pocket formed only in the vicinity of the wing portion, and the pocket is opened by pulling when the wing portion is folded back to the outer surface side of the back sheet. Therefore, such a pocket cannot be formed other than the napkin having no wing portion or the vicinity of the wing portion of the napkin. Moreover, the pocket of patent document 1 is easy to be pressed during wear and to be crushed entirely, or to turn over partially.
When the pocket of the absorbent article described in Patent Document 2 is also partially pressed, the whole is easily crushed or partially turned over.

  Furthermore, in the sanitary napkin provided with the conventional side seat, the side seat is often fixed by a linear heat seal portion along the longitudinal direction of the napkin, and the side seat is bent smoothly along the wearer's body. In some cases, the heat seal part was hard and the touch was poor.

  Accordingly, an object of the present invention is to provide an absorbent article that stably maintains the leak-proof effect due to the pocket and that is well curved and fits well to the wearer's body shape.

  The present invention is an absorbent article having an absorbent main body provided with an absorbent layer and a leak-proof layer, and a pair of side sheets disposed on both sides on the skin contact surface side of the absorbent main body, The pair of side sheets are respectively positioned in front and rear in the longitudinal direction of the absorbent main body of the first joint line, and a first joint line having a concave shape toward the center in the width direction of the absorbent main body. It is joined with this absorptive main part by the 2nd joint line extended so that it may intersect with the longitudinal direction of a property main part, and it is open at the time of wear between the 1st joint line and inner edge in each of a pair of said side seats Pockets are formed, and the second joint line alternately has portions close to the inner edge and portions far from the inner edge, and between adjacent portions close to the inner edge. Is the length of the first joining line in the longitudinal direction. By providing remote short absorbent article it is obtained by achieving the above object.

  The absorbent article of the present invention stably maintains the leak-proof effect due to the pocket during wearing, and is well curved and fits well to the wearer's body shape.

Hereinafter, the present invention will be described based on preferred embodiments with reference to FIGS.
The sanitary napkin 1 as one embodiment of the absorbent article of the present invention comprises a liquid-retaining absorbent layer 11 and a liquid-impermeable leak-proof layer 13 as shown in FIGS. And a pair of side sheets 6 and 6 disposed on both sides of the absorbent main body 10 on the skin contact surface side. The absorbent layer 11 in the napkin 1 is composed of a liquid-permeable top sheet 2 and a liquid-retaining absorbent body 4, and the leak-proof layer 13 is composed of a liquid-impermeable back sheet 3. On both sides of the napkin 1, a pair of wing portions 71, 71 are provided.
The pair of side sheets 6 and 6 in the napkin 1 of the present embodiment are respectively positioned at the first joint line 8 that is concave toward the center in the width direction of the absorbent main body 10, and before and after the first joint line 8. The first joint line 8 and the inner edge of each of the pair of side sheets 6 and 6 are joined to the absorbent body 10 by a second joint line 9 extending so as to intersect the longitudinal direction of the absorbent body 10. A pocket 84 that is open when worn is formed between 83 and 61.

  The napkin 1 according to the present embodiment will be described in detail. The pair of side sheets 6 and 6 are, as shown in FIGS. 1 and 2, the skin contact surface side of the absorbent main body 10 (upper side in FIG. 2). Are arranged along the longitudinal direction of the absorbent main body 10, and are arranged so as to cover substantially the entire length of the napkin 1.

As shown in FIG. 2, the side sheet 6 has a two-layer portion 6 </ b> A located near the center of the napkin 1 in the width direction, and the folded portion is an inner edge 61 of the side sheet 6. It has become. The inner edge 61 is formed in a straight line on the width direction center portion side of the napkin 1. Although the left side of the napkin 1 has been described with reference to FIG. 2, the right side is configured in exactly the same way. The same applies to FIG. 3 described later.
As described above, it is preferable that the side sheet 6 is folded in two layers so that the folded portion is positioned on the center side in the width direction of the napkin (absorbent article) because the pockets are easily opened at the time of wearing.
The part 6 </ b> A in the side sheet 6 is fixed to the back sheet 3 together with the top sheet 2 by heat embossing at the front and rear ends of the napkin 1. On the other hand, a portion 6B located on the outer side in the width direction of the napkin 1 in the side sheet 6 is joined to the back sheet 3 by an adhesive (not shown), and is located at the peripheral portion 14 of the napkin 1 in the portion 6B. The portion to be joined is joined to the back sheet 3 by heat embossing. Further, the top sheet 2 and the back sheet 3 are joined by heat embossing at a portion located at the peripheral edge 14 of the napkin 1.

  As shown in FIG. 1, the first joining line 8 in each of the pair of side sheets 6 and 6 of the napkin 1 according to the present embodiment is located behind the excretory part facing part A and the excretory part facing part of the napkin 1. It is provided in each part B (hereinafter, the first joint line provided in the excretory part facing part A is also referred to as 8A, and the first joint line provided in the rear part B is also referred to as 8B). Like this napkin 1, the excretion part opposing part A in the absorbent article provided with the wing part 71 fixed to clothing outer surfaces, such as shorts, is a part which has a wing on the both sides.

As shown in FIG. 1, the pair of side sheets 6 and 6 are joined to the absorbent main body 10 by a first joining line 8A and a first joining line 8B, respectively. The first joint line 8A and the first joint line 8B are continuous in the longitudinal direction of the absorbent main body 10, respectively. The longitudinal direction of the absorbent main body is a direction that coincides with the wearer's front-rear direction when worn on a napkin, panty liner, incontinence pad, and the like, and is a direction parallel to the inner edge 61 in this embodiment.
In the present embodiment, the first joint line 8A formed in the excretory part facing part A and the first joint line 8B formed in the rear part B are the same except that the formed parts are different. It has a configuration. In the following description, the first joint line 8A of the excretory part facing part A will be mainly described, but the description thereof is similarly applied to the first joint line 8B.

  As shown in FIG. 3, the first joining line 8 </ b> A extends in the longitudinal direction in an arc shape, and has portions 81 and 81 that are close to the inner edge 61 and a portion 82 that is far from the inner edge 61. The length L1 in the longitudinal direction of the first joint line 8A (see FIG. 3), the separation distance W1 between the portion 81 near the inner edge of the first joint line 8 and the portion 82 far from the inner edge (see FIG. 3 and below, It is preferable that the relationship of L1> W1 is satisfied. L1 has a length of 10 to 50% with respect to the product length, and W1 preferably has a width of 3 to 30% with respect to the product width. The product width here means the length in the width direction between the front and rear end portions of each of the pair of wing portions 71, 71 in the napkin 1. Further, the terms “near” and “far” as used herein have a relative meaning that they are nearer than a far part and farther than a close part.

  Moreover, it is preferable that a 1st and 2nd joining line is one joining line substantially continuous as a whole. That is, the first joint line and the second joint line are substantially continuous joint lines, and the first joint line and the second joint line are also substantially continuous. preferable. The term “substantially continuous” means that, in addition to the continuous bonding line as in the present embodiment, a plurality of bonding portions that do not overlap with the straight line when an arbitrary straight line parallel to the width direction of the absorbent article is assumed. It is intended to include those that are arranged continuously so that there is no such thing, and those that consist of many joints that are discontinuous when viewed microscopically but that form linear joints when viewed as a whole In addition, a joining line formed by arranging a plurality of joining portions in the longitudinal direction of the napkin so as to overlap a part of each other is also included. For example, as shown in FIG. 5, a joining line formed by arranging a plurality of short joining portions 85 in the longitudinal direction of the napkin so as to partially overlap each other is also a substantially continuous joining line. However, the shortest distance between the joints 85 is preferably within 2 mm.

  The length L1 (see FIG. 3) of the first joint line 8A provided in the excretory part facing part A is substantially the same as the length of the base part of the wing part 71 as shown in FIG.

As shown in FIG. 2, the first joining line 8 </ b> A in the present embodiment is formed by joining a part of the portion 6 </ b> A located near the center in the width direction of the napkin 1 to the topsheet 2 by heat embossing. Yes.
The first bonding line 8A is formed by bonding the side sheet 6 only to the top sheet 2 as in the present embodiment, or the side sheet 6 is fixed to the absorber together with the top sheet 2, When the groove | channel is not formed in the said 1st joint line equivalent part of an absorber, an absorbent article becomes still softer and it is preferable at the point which the fit property to a body improves.

  The first joining line 8 </ b> A may be formed by pressing the side sheet 6 together with the top sheet 2 and the absorber 4. In this case, there is an advantage that liquid bleeding and diffusion are suppressed by the groove formed in the first joint line 8 portion.

  A portion 83 (see FIG. 3) between the inner edge 61 and the first joining line 8 </ b> A in each of the pair of side sheets 6, 6 is not joined to the topsheet 2, and the portion 83 and the topsheet 2 A pocket 84 is formed therebetween. As shown in FIG. 4, the pocket 84 is opened at the time of wearing, and since the bodily fluid moved in the width direction of the napkin is captured in the opened pocket 84, leakage prevention can be improved. Moreover, since it can be easily understood that the leak-proof property in the width direction is high in appearance, it is also preferable in terms of giving the wearer a sense of security.

Furthermore, since at least a part of the first joining line 8 overlaps with the absorber 4 in a plan view, the liquid captured by the pocket 84 is smoothly absorbed by the absorber, and the leak-proof property is further improved. preferable. The liquid caught in the pocket 84 is absorbed by the absorber 4 while moving from the front of the pocket 84 to the back, or after reaching the back of the pocket 84, the liquid is returned to the absorber and absorbed.
When overlapping with the absorber 4 in a plan view, the whole or a part of the first joining line 8A is surrounded by a region where the absorber is disposed (in FIG. 1, a dotted line indicating the outline of the absorber). Means existing in the area). In the first joining line 8A, it is preferable that a part of the swinging width W1 overlaps the absorber 4, and it is more preferable that the entire swinging width W1 overlaps the absorber 4. In the present embodiment, as shown in FIG. 1, the first joining line 8 </ b> A has the entire swing width W <b> 1 overlapped with the absorber 4 over the entire length thereof.

In the napkin 1 of the present embodiment, as shown in FIG. 1, a second joint line 9C and a second joint line 9A are connected to each other before and after the first joint line 8A, and the first joint line 8B is provided. The second joint line 9A and the second joint line 9B are connected to each other before and after the. The first joint line 8A is connected to the first joint line 8B through the second joint line 9A. Further, each of the second joint line 9 </ b> C and the second joint line 9 </ b> A is disposed on the center side in the width direction of the front and rear end portions of each of the pair of wing portions 71 and 71 in the napkin 1.
As shown in FIG. 1, the pair of side sheets 6 and 6 are joined to the absorbent main body 10 by a second joining line 9A, a second joining line 9B, and a second joining line 9C, respectively. The second joint line 9A, the second joint line 9B, and the second joint line 9C are each continuous in the longitudinal direction of the absorbent main body 10.

As shown in FIG. 3, the second joining line 9A meanders so as to alternately have portions 91 close to the inner edge and portions 92 far from the inner edge, and more specifically in the longitudinal direction. It has a zigzag shape along. Between the portion 91 close to the inner edge and the portion 92 far from the inner edge, the joining line forming the second joining line 9A extends and is connected so as to intersect the longitudinal direction.
More specifically, the second joining line 9A has a shape in which arc-shaped portions convex toward the center in the width direction of the napkin 1 and arc-shaped portions recessed toward the center in the width direction of the napkin 1 are alternately connected. It does not have a part parallel to the longitudinal direction of the napkin 1. The second joining line 9A has two concave arcuate portions, and preferably has the same shape.

In the second joint line 9A, the distance L2 between the portions close to the adjacent inner edge portions is shorter than the length L1 in the longitudinal direction of the first joint line 8A, as shown in FIG. The distance L2 is a length obtained by measuring the distance between the points closest to the respective inner edges in the portions 91 close to the adjacent inner edges along the longitudinal direction.
Further, a separation distance W3 (refer to FIG. 3, hereinafter also referred to as a swinging width) between the portion 91 near the inner edge of the second bonding line 9A and the portion 92 far from the inner edge is referred to as the first bonding line by heat embossing. It is preferably longer than the seal width W2 of 8A (see FIG. 3). The first joint line 8A has a predetermined width, and both side edges of the first joint line 8A can be regarded as two parallel straight lines microscopically. Therefore, the seal width W2 is defined between the two parallel straight lines. The distance.

  A portion 93 (see FIG. 3) between the second joining line 9A and the inner edge 61 in each of the pair of side sheets 6 and 6 is not joined, and a pocket is provided between the portion 93 and the top sheet 2. 94 (hereinafter also referred to as a small pocket) is formed. When worn, it is preferable that the pocket is opened as shown in FIG.

  Similarly to the first joint line 8A, the second joint line 9A in the present embodiment is formed by joining a part of the portion 6A located near the center in the width direction of the napkin 1 with the topsheet 2 by heat embossing. Has been. In addition, for the joining of the second joining line 9A and the absorbent main body 10, the description of the first joining line 8A described above is appropriately applied.

  Furthermore, since at least a part of the second joining line 9A overlaps with the absorber 4 in a plan view, the liquid captured by the pocket 94 is smoothly absorbed by the absorber, and the leak-proof property is further improved. preferable. In the present embodiment, as shown in FIG. 1, the second joining line 9 </ b> A has the entire swinging width W <b> 3 overlapping the absorber 4 over the entire length thereof. In addition, for the overlap between the second bonding line 9A and the absorbent main body 10, the description of the first bonding line 8A described above is appropriately applied.

  In the above description, the second bonding line 9A has been mainly described. However, the same applies to the second bonding line 9B and the second bonding line 9C, including a preferable configuration, unless otherwise specified.

In each of the pair of side sheets 6, 6, it is sufficient that one small pocket 94 formed by the second bonding line 9 is formed before and after the large pocket 84, and a plurality of small pockets 94 are preferably formed. When the first joining line 8B is not provided in the rear part B, the meandering of the second joining line 9 extends from the longitudinal front and rear end parts of the first joining line 8A of the front part A to the front and rear end edges of the napkin 1. It may be repeated. In the case where the first joint line 8B is provided in the rear part B, it is sufficient that at least one small pocket is provided between the first joint line 8A and the first joint line 8B. It is preferable that 2 to 5 are more preferable.
The region of the small pocket 94 formed by the second bonding line is preferably 10% or more in the front-rear direction relative to the length L1 of the first bonding line. The length of the pocket 94 in the longitudinal direction is preferably 4% or more with respect to L1.
In the present embodiment, as shown in FIG. 1, the second joining line 9 </ b> A straddling the excretion facing part A and the rear part B forms two small pockets 94, 94, The second joint line 9C forms four small pockets 94, 94... And the second joint line 9B in the rear part B forms three small pockets 94, 94, 94.

The length L1 in the longitudinal direction of the first joining line 8A in the napkin 1 of the present embodiment is preferably 40 to 100 mm, and the length in the longitudinal direction of the second joining line 9A (region where the meandering is repeated) is It is preferable that it is 4-50 mm, and the one where L1 is longer is preferable.
Moreover, it is preferable that the said distance L2 in 9 A of 2nd joining lines is 4-30 mm. L2 / L1 is preferably 4 to 75%.
The swing width W1 of the first joint line 8A is preferably 2 to 15 mm, and the swing width W3 of the second joint line 9A is preferably 2 to 15 mm. W1 is preferably the same as W3 or larger than W3.

  The napkin 1 according to the present embodiment has a thickness of 0.5 to 3.5 mm, particularly 1.0 to 2.0 mm, which is less likely to cause a sense of incongruity when worn and fits more along the front-rear direction of the body. In addition, the pocket is easy to open at the time of wearing, and the anti-moisture prevention property is further improved, which is preferable. The lower limit value of the thickness is a lower limit value mainly from the viewpoint of difficulty in generating a twist at the time of wearing.

The thickness of the napkin 1 (absorbent article) can be measured as follows.
<Thickness measurement method>
The product is allowed to stand on a flat place so as not to be wrinkled or bent, a load of 5 cN / cm ² is applied to the upper surface of the region where the absorber of the product is arranged, and the thickness under the condition is measured. The wearing pressure when wearing a napkin varies depending on the body part, individual differences, state (sitting / moving), etc. In the central area of the crotch area (near the excretion point), besides wearing clothing such as shorts Since there is no load to 5 cN / cm ² in the absence of external pressure, this load (5 cN / cm
cm ² ). For the measurement of thickness in the present invention, PEACOCK DIA
L UPRIGHT GAUGES R5-C (OZAKI MFG.CO.LTD.)
Was used. At this time, a plate (an acrylic plate having a thickness of about 5 mm) is arranged at the measurement portion between the thickness gauge tip and the product, and the size of the plate is adjusted so that the load is 5 cN / cm ² (the plate The shape should be circular or square).

As a material for forming the side sheet 6, various known materials can be used. For example, a water-repellent nonwoven fabric or a sheet made of a resin film is preferably used. In particular, it is preferable to use a water-repellent air-through non-woven fabric from the viewpoint of touch and prevention of lateral leakage. As the side sheet 6, a laminate of a nonwoven fabric and a resin film can also be used.
As a material for forming the top sheet 2, the back sheet 3, and the absorbent body 4, various materials conventionally used for absorbent articles such as sanitary napkins can be used without particular limitation.

The napkin 1 of this embodiment will be further described. As shown in FIG. 2, the leak-proof layer 13 is composed of a liquid-impermeable back sheet 3. As shown in FIGS. 1 and 2, the top sheet 2 covers the entire upper surface of the absorber 4, and has straight side edges at positions slightly extending from both side edges of the absorber 4. ing. The back sheet 3 covers the entire area of the lower surface of the absorbent body 4 and has portions extending outward from both side edges of the absorbent body 4, and the extended portions together with the side sheets 6 are both side portions of the napkin 1. Side flaps 7 are formed on the side. The side flap portion 7 extends greatly outward in the width direction at the excretory portion facing portion A to form a wing portion 71. The absorber 4 is formed in a substantially rectangular shape, and is fixed in a state of being sandwiched between the top sheet 2 and the back sheet 3.
Moreover, the napkin 1 of the present embodiment is applied to the inner surface of clothing such as shorts by a slip stopper (not shown) provided on the surface (non-skin contact surface) on the back sheet 3 side, similarly to the conventional napkin. Used fixedly.

  According to the napkin 1 of the present embodiment, the excretory part facing part A, which is likely to be twisted when worn, has the first joint line 8 forming a large pocket 84 and the second joint line 9 before and after that. Therefore, even if the napkin 1 is twisted, the small pocket 94 formed by the second bonding line 9 is deformed and the twist of the napkin 1 is absorbed. Therefore, the large pocket 84 in the excretory part facing part A can capture the body fluid that has moved in the width direction without being crushed by twisting. Further, the napkin 1 is likely to be twisted in the hip part when worn, but the rear part B also has the first joint line 8 and the second joint line 9 before and after the first joint line 8, so that the leakproof property is provided. It is further enhanced.

  Further, the napkin 1 is provided with a plurality of first joining lines 8 and second joining lines 9 extending substantially over the entire length in the longitudinal direction of the pair of side sheets 6, 6. Are formed at three locations, the arrangement facing portion A, the front portion C, and the rear portion B, so that they are regularly bent over substantially the entire length in the longitudinal direction. Therefore, it is easy to bend back and forth and has excellent fit.

In the napkin 1 of the present embodiment, as shown in FIG. 1, the plurality of first joining lines 8 and the entire second joining lines 9 are formed on the absorber 4 in the width direction of the napkin 1. . As a result, a stable absorption surface along the body is formed on the absorber 4, and the side of the absorber is prevented from being twisted, thereby enabling more efficient absorption. Instead of the form in which the plurality of first joining lines 8 and second joining lines 9 are entirely fixed on the absorber 4, the first joining lines 8 and the second joining lines such as a part near the inner edge 61. Only a part of each 9 may be fixed on the absorbent body 4.
Each of the first joint line 8 and the second joint line 9 in the pair of side sheets 6 and 6 has a concave shape on the center side in the width direction to form a pocket and open the pocket when worn. The prevention of leakage is enhanced.

The absorbent article of the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist of the present invention.
For example, the absorbent article of the present invention may not have a wing part. Further, the joining line may be formed by joining the side sheet to the surface sheet / absorber / back sheet with an ultrasonic seal, a high-frequency seal, an adhesive, or the like.
In the absorbent article of the present invention, the second joining line only needs to extend so as to intersect the longitudinal direction, and may not be a meandering continuous line. The second joining line may be formed with a plurality of straight lines that are not parallel to the width direction, or the meandering shape may be formed discontinuously.
There may be only one first joining line or a plurality of first joining lines. In the case where a plurality of the first joint lines are provided, it is sufficient that the swing width W1 and the length L1 of one first joint line satisfy the relationship of L1> W1, and the swing between each first joint line is not necessary. The width W1 and / or the length L1 may be different.
The distance L2 and the swing width W3 in one second joining line 9 may be different in a zigzag shape.
In the present embodiment, the second joint line has a zigzag shape, but may have a waveform shape having a curve.

  Further, the side sheet 6 is made of a material that can be stretched or is provided with a thread-like or belt-like elastic material (for example, thread rubber or flat rubber) in the vicinity of the inner edge 61, and the elastic material is attached to the inner edge. The pocket may be easily formed (opened) by being sandwiched between the side sheets 6 folded at the portion 61. When fixing the elastic material, the elastic material may be fixed by a joining line, or may be separately fixed by a hot-melt type adhesive or the like.

Moreover, a part of the first joining line 8 and the second joining line 9 may protrude from the inner edge 61 of the side seat to the center side in the width direction of the absorbent main body 10.
Needless to say, the side sheet 6 may be bonded to the absorbent main body with an adhesive or the like in a portion other than the first bonding line 8 and the second bonding line 9.

  In addition to the sanitary napkin, the absorbent article of the present invention may be a panty liner (orimono sheet), an incontinence pad, or the like. In addition, the pocket in the absorbent article of this invention is not restricted to what opens at the time of mounting | wearing.

FIG. 1 is a plan view showing a sanitary napkin according to an embodiment of the present invention as viewed from the surface sheet side. FIG. 2 is an enlarged cross-sectional view taken along the line II of FIG. FIG. 3 is a partially enlarged plan view showing details of a joint line between the excretory facing portion and the front portion of the sanitary napkin shown in FIG. 1. FIG. 4 is a perspective view showing a state in which a pocket is opened in a worn state. FIG. 5 is a diagram illustrating another example of the joining line.

Explanation of symbols

1 Sanitary napkin (absorbent article)
DESCRIPTION OF SYMBOLS 10 Absorbent main body 11 Absorbing layer 2 Top sheet 4 Absorber 13 Leak-proof layer 14 Peripheral part 3 Back sheet 6 Side sheet 61 Inner edge part 8 First joint line 81 Part 82 near inner edge part 84 part far from inner edge part Pocket 9 Second joint line 91 Part near inner edge 92 Part far from inner edge 94 Pocket A Excretion part facing part B Rear part C Front part L1 Length of first joint line L2 Adjacent to second joint line Distance W1 between the portions 91 close to the inner edge portion Distance between the portion near the inner edge portion of the first joint line and the portion far from the inner edge (oscillation width)
W2 Seal width W3 of the first joint line W3 Separation distance (oscillation width) between the portion near the inner edge and the portion far from the inner edge

Claims (5)

An absorbent article having an absorbent main body provided with an absorbent layer and a leak-proof layer, and a pair of side sheets disposed on both side portions on the skin contact surface side of the absorbent main body,
The pair of side sheets are respectively positioned in front and rear in the longitudinal direction of the absorbent main body of the first joint line, and a first joint line having a concave shape toward the center in the width direction of the absorbent main body. Is joined to the absorbent body at a second joining line extending so as to intersect the longitudinal direction of the sex body,
Between the first joint line and the inner edge of each of the pair of side sheets, a pocket that is opened when worn is formed,
The second joint line alternately includes portions close to the inner edge and portions far from the inner edge, and a distance between adjacent portions close to the inner edge is the first joint. An absorbent article shorter than the length of the line in the longitudinal direction.   The absorptive article according to claim 1 in which said 2nd joined line in a pair of said side sheets has corrugated shape or zigzag shape.   The said absorption layer consists of a liquid-permeable surface sheet and a liquid holding | maintenance absorber, At least one part of each of the said 1st joining line and the said 2nd joining line has overlapped with the said absorber in planar view. Item 3. An absorbent article according to item 1 or 2.   The absorptive article according to any one of claims 1 to 3 with which said 1st joined line is each provided in the back part located behind said excretion part opposing part of said absorptive article, and this excretion part opposing part. The absorbent article according to any one of claims 1 to 4, wherein the absorbent article has a thickness of 0.5 to 3.5 mm.

Images