JP2007135940A - Absorptive article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an absorptive article suppressed from the article getting uncomfortable due to folding of the seal part. <P>SOLUTION: The absorptive article 1 comprises a surface sheet 2 at least a part of which is liquid-permeable, a liquid-impermeable back sheet 3, an absorber part 4 positioned between the surface sheet 2 and the back sheet 3, and a connecting part 6 for connecting the surface sheet 2 with the back sheet 3, wherein the connecting part 6 is formed along the periphery of the absorptive article and comprises a plurality of first seal parts 61 and one or more second seal parts 63, wherein the second seal parts 63 are lower in rigidity than the first seal parts 61. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an absorbent article.

  Conventionally, in an absorbent article such as a sanitary napkin provided with a top sheet that forms a skin contact surface, a back sheet that forms a non-skin contact surface, and a liquid-retaining absorbent layer, What formed the seal | sticker part for joining a back surface sheet is widely known. For example, the seal portion is formed in a band shape having a substantially equal width so as to follow the outer edge of the absorbent article as a whole by continuously forming fine thermocompression bonding portions. Here, the thermocompression bonding part in the seal part is cured by this thermocompression bonding process, which may cause discomfort at the time of wearing. One of the problems was to suppress the discomfort at the time of wearing caused by this thermocompression bonding part.

  On the other hand, the thermocompression bonding portion in the seal portion is increased in the width and area of the thermocompression bonding portion in the region where the thickness of the portion forming the seal portion is thick, and the width and area of the thermocompression bonding portion in the region where the thickness is thin. An absorbent article that secures the bondability at the seal portion and prevents the wearing feeling from deteriorating has been proposed (for example, see Patent Document 1).

Moreover, since the seal part joined and formed by thermocompression bonding etc. has hardened | cured, a seal | sticker part may be return | folded to the skin side integrally, and a feeling of mounting | wearing will get worse by this return | turnback. For example, as shown in FIGS. 14 to 17, in conventional absorbent articles 1H, 1I, 1J, and 1K in which the joint portion 6 is continuously formed with a substantially equal width in the entire outer periphery or in a predetermined region, the joint portion. The predetermined area | region in 6 may be folded in the skin side integrally. Specifically, as shown in FIGS. 18 and 19, the end portion in the longitudinal direction of the absorbent article 1H is folded back integrally, or the side portion in the longitudinal direction is folded back so as to be folded back 65. May be formed. In some cases, the folded portion 65 hits the skin, giving the user an uncomfortable feeling.
Japanese Patent No. 3611761

  In the absorbent article in Patent Document 1, the thermocompression bonding portion in the seal portion is increased in the region where the thickness is large in the portion where the seal portion is formed, and the thermocompression bonding portion is increased in the region where the thickness is small. By reducing the width and area, the bonding property at the seal portion is ensured and the wearing feeling is prevented from deteriorating.

  However, even in the absorbent article in Patent Document 1, no means for preventing the seal portion from being folded is provided. And these may be the subject of the present invention.

  This invention is made | formed in view of the above subjects, and it aims at providing the absorbent article which suppresses the deterioration of the feeling of mounting | wearing by the folding | turning of a seal part.

  In order to achieve the above-mentioned object, the present invention has found that the integral folding of the seal part can be suppressed by devising the shape of the seal part, and invented the following absorbent article.

  (1) At least a part of which is a liquid-permeable top sheet part, a liquid-impermeable back sheet part, an absorber part disposed between the top sheet part and the back sheet part, and the top sheet An absorbent article comprising: a joint part joining the back part and the back sheet part, wherein the joint part is formed along an outer edge of the absorbent article, and a plurality of first seal parts And one or a plurality of second seal portions, wherein the second seal portion is lower in rigidity than the first seal portion.

  According to the invention of (1), at least a part of the absorbent article is disposed between the liquid-permeable top sheet portion, the liquid-impermeable back sheet portion, and the top sheet portion and the back sheet portion. An absorbent body part, and a joint part for joining the top sheet part and the back sheet part. The joint portion is formed along the outer edge of the absorbent article, and includes a plurality of first seal portions and one or a plurality of second seal portions, and the second seal portion is a first seal portion. It is less rigid than the seal part.

  The joining portion includes a plurality of first seal portions and one or a plurality of second seal portions having rigidity lower than that of the first seal portion. For example, by forming the second sheet portion having low rigidity between the predetermined first sheet portion and the first seal portion adjacent thereto, it is possible to prevent the joint portion from being folded back largely and integrally. it can. Specifically, when the absorbent article is deformed, it is possible to prevent the joint portion from being folded large and integrally by lightly bending or twisting lightly in the low-rigidity second seal portion formed at a predetermined interval. can do. In addition, for example, even when folded from a predetermined second seal portion and a second seal portion adjacent thereto, the folded region is a smaller region than the conventional one. In other words, folding can be minimized.

  (2) The absorbent article according to (1), wherein the second seal part is a non-seal part or a seal part having a narrower joint width than the first seal part.

  According to invention of (2), the 2nd seal part in an absorptive article is a seal part whose joint width is narrower than a non-seal part or the 1st seal part. A non-seal part is an area | region which does not join a surface sheet part and a back surface sheet part, for example, is an area | region where the thermocompression-bonding process etc. are not performed. Further, the joining width is a distance in a direction substantially perpendicular to the outer edge direction in the first seal portion, and the seal portion having a narrower joining width than the first seal portion is substantially perpendicular to the outer edge direction in the second seal portion. The distance in the direction means that the distance in the direction substantially perpendicular to the outer edge direction in the first seal portion is short. By making the 2nd sheet part into a seal part whose joint width is narrower than a non-seal part or the 1st seal part, the 2nd sheet part can be made low rigidity rather than the 1st sheet part. Thereby, the rigidity of the second seal portion can be reduced without changing the material and joining method in the joining portion.

  (3) The absorbent article according to (1) or (2), wherein the first seal portion and the second seal portion are alternately formed in the outer edge direction.

  According to the invention of (3), in the absorbent article, the first seal portion and the second seal portion are alternately formed in the outer edge direction. By forming the first seal portion and the second seal portion alternately in the outer edge direction, the second seal portion having low rigidity is formed at a predetermined interval in the joint portion. Thereby, when the absorbent article is deformed, light bends and light twists are formed at predetermined intervals, so that the joint can be deformed following the deformation of the absorbent article, and the joint is integrated. Can be suitably suppressed.

  (4) At least a part of the liquid-permeable top sheet part, a liquid-impermeable back sheet part, the absorber part disposed between the top sheet part and the back sheet part, and the top sheet An absorbent article comprising: a joint part joining the back part and the back sheet part, wherein the joint part is formed along an outer edge of the absorbent article, and a plurality of first seal parts And one or a plurality of second seal portions, wherein the second seal portions are non-seal portions, and the first seal portions and the second seal portions are alternately formed in the outer edge direction. Absorbent article.

  According to the invention of (4), at least a part of the absorbent article is disposed between the liquid-permeable top sheet part, the liquid-impermeable back sheet part, and the top sheet part and the back sheet part. An absorbent body part, and a joint part for joining the top sheet part and the back sheet part. The joint portion is formed along the outer edge of the absorbent article, and includes a plurality of first seal portions and one or a plurality of second seal portions, and the second seal portions are not sealed. The first seal portion and the second seal portion are alternately formed in the outer edge direction. In this way, the joint portion includes a plurality of first seal portions and one or more second seal portions that are non-seal portions, and the first seal portion and the second seal portion that is a non-seal portion in the outer edge direction. By forming alternately, it can suppress that a junction part folds large integrally. Specifically, when the absorbent article is deformed, the joint portion is folded back largely and integrally by lightly bending or lightly twisting at the second seal portion, which is a non-seal portion formed at a predetermined interval. Can be suppressed. Further, even when folded from the predetermined second seal portion and the second seal portion adjacent thereto as a starting point, the folded region is a smaller region than the conventional one. In other words, folding can be minimized.

  (5) At least a part of the liquid-permeable top sheet part, a liquid-impermeable back sheet part, the absorber part disposed between the top sheet part and the back sheet part, and the top sheet An absorbent article comprising: a joint part joining the back part and the back sheet part, wherein the joint part is formed along an outer edge of the absorbent article, and a plurality of first seal parts And one or a plurality of second seal portions, wherein the second seal portion is formed continuously with the first seal portion and has a narrower joint width than the first seal portion.

  According to the invention of (5), the absorbent article is at least partially disposed between the liquid-permeable top sheet portion, the liquid-impermeable back sheet portion, and the top sheet portion and the back sheet portion. An absorbent body part, and a joint part for joining the top sheet part and the back sheet part. The joint portion is formed along the outer edge of the absorbent article, and includes a plurality of first seal portions and one or a plurality of second seal portions, and the second seal portion is a first seal portion. It is characterized in that it is formed continuously with the seal part and has a smaller joint width than the first seal part.

  As described above, the joint portion includes a plurality of first seal portions and one or a plurality of second seal portions that are formed continuously with the first seal portion and have a narrower joint width than the first seal portion. It is possible to prevent the portion from being folded back and integrally. Specifically, when the absorbent article is deformed, the joint portion is largely bent and integrally folded by lightly bending or twisting lightly in the second seal portion whose joint width is narrower than that of the first seal portion. Can be suppressed. Further, even when folded from the predetermined second seal portion and the second seal portion adjacent thereto as a starting point, the folded region is a smaller region than the conventional one. In other words, folding can be minimized.

  Furthermore, since the first seal portion and the second seal portion are continuously formed in the joint portion, the outer edge region where the joint portion is formed is continuously joined. Thereby, for example, while improving the liquid-proof property in an absorbent article, a mouth opening etc. can be suppressed suitably.

  (6) The absorbent article according to (5), wherein at least one side portion of the joint portion is formed in a substantially meandering shape or a substantially wavy shape.

  According to the invention of (6), at least one side portion in the joint portion is formed in a substantially meandering shape or a substantially wavy shape. Thereby, the joint width of the second seal part can be made narrower than the joint width in the first seal part, and when the absorbent article is deformed, the deformed part is low-rigid and can be bent lightly or twisted lightly. Can be formed.

  (7) The absorbent article according to (5) or (6), wherein a bonding width of the first seal portion is 20 mm or less.

  According to invention of (7), the joining width | variety of a 1st seal part is 20 mm or less, It is characterized by the above-mentioned. As a result, the wearing feeling during normal wearing can be suitably maintained, and for example, the discomfort felt when folded from the predetermined second seal portion and the second seal portion adjacent thereto is also suppressed. can do.

  ADVANTAGE OF THE INVENTION According to this invention, the absorbent article which suppresses the deterioration of the feeling of mounting | wearing by the folding | turning of a seal | sticker part can be provided.

  FIG. 1 is a plan view of an absorbent article according to the first embodiment of the present invention. FIG. 2 is a simplified cross-sectional view for explaining the configuration of the absorbent article in the first embodiment of the present invention, (a) YY ′ cross-sectional view, (b) XX ′ cross-sectional view, (C) It is ZZ 'sectional drawing. FIG. 3 is an enlarged view of a region A in FIG. FIG. 4 is a perspective view of the absorbent article in use according to the first embodiment of the present invention. 5A is a plan view of an absorbent article according to the second embodiment, and FIG. 5B is an enlarged view of region B. FIG. Drawing 6 is a figure showing the state where the seal part of the absorptive article in a 2nd embodiment turned up. FIG. 7: is (a) top view of the absorbent article in 3rd Embodiment, (b) It is an enlarged view of the area | region C. FIG. FIG. 8: is the (a) top view of the absorbent article in 4th Embodiment, (b) It is an enlarged view of the area | region D. FIG. 9A is a plan view of an absorbent article according to the fifth embodiment, and FIG. 9B is an enlarged view of a region E. FIG. 10A is a plan view of an absorbent article according to the sixth embodiment, and FIG. 10B is an enlarged view of a region F. FIG. FIG. 11: is the (a) top view of the absorbent article in 7th Embodiment, (b) It is an enlarged view of the area | region G. FIG. FIG. 12 is a plan view of an absorbent article according to the eighth embodiment. Drawing 13 is a figure explaining the (a) seal process of the absorptive article in a 4th embodiment, and is the figure which unfolded the roll part in which the pattern of (b) and (c) seal part was formed.

[1] Overall structure of absorbent article The overall structure of the absorbent article of the present invention will be described with reference to the absorbent article 1 according to the first embodiment of the present invention.

[1.1] General As shown in FIGS. 1 to 4, the absorbent article 1 is substantially vertically long, and at least a part of the liquid-permeable top sheet portion 2 and a liquid-impermeable back sheet portion. 3, the absorber part 4 arrange | positioned between the surface sheet part 2 and the back surface sheet part 3, and the junction part 6 which joins the surface sheet part 2 and the back surface sheet part 3 are provided. In this embodiment, the liquid-permeable intermediate sheet part 5 arrange | positioned between the surface sheet part 2 and the absorber part 4, the liquid-proof groove | channels 10 and 11, and the leak-proof sheet | seat 90 are further provided. . The leak-proof sheet 90 can constitute the side sheet 12 that extends in the width direction of the absorbent article 1 and is a part of the top sheet portion 2.

  The absorbent article 1 is an absorbent article that is long on the rear side in the longitudinal direction, and specifically, is an absorbent article that is long on the rear side so as to cover even the tailbone. Examples of the length of the absorbent article 1 in the longitudinal direction include 290 mm to 420 mm, preferably 330 mm to 400 mm. The absorbent article 1 having the illustrated length can be suitably used, for example, when sleeping at the time of sleeping (for example, for night use). Here, in the present embodiment, for example, an absorbent article used for night use will be described, but the absorbent article in the present invention is not limited to this. For example, the absorbent article of the present invention includes a so-called daytime absorbent article that is shorter than the absorbent article 1 in the present embodiment.

  At least a part of the top sheet portion 2 is disposed on the body side and is in contact with the excretion portion during use. The entire surface sheet portion 2 may be liquid permeable or partially liquid permeable, and even if it is composed of a single sheet-like member, a plurality of sheet-like members are bonded. It may be configured. In the present embodiment, the top sheet portion 2 includes a liquid-permeable region at the center portion in the width direction of the absorbent article 1 and includes a liquid-impermeable side sheet 12 on the end side in the width direction. The side sheet 12 is formed by extending a leak-proof sheet 90 in the width direction of the absorbent article 1. Then, excretion such as menstrual blood excreted from the excretion part passes through the liquid permeation area and the intermediate sheet part 5 in the top sheet part 2 and is absorbed by the absorber part 4. Since the back sheet part 3 arrange | positioned at the underwear side is liquid-impermeable, excrement does not permeate | transmit the underwear side, but is hold | maintained in the state absorbed by the absorber part 4. FIG.

  In order to prevent leakage of excrement such as menstrual blood, the liquid-proof grooves 10 and 11 and the leak-proof sheet 90 are arranged. The liquid-proof grooves 10 and 11 are formed continuously so that the crimping part 9 surrounds the absorber part 4 and mainly prevents leakage of excrement such as menstrual blood absorbed by the absorber part 4. .

  The leak-proof sheet 90 is formed on the upper surface side of the top sheet portion 2 and in the vicinity of the side end portion in the width direction of the absorbent body portion 4, and is arranged so as to form a standing wall when attached to the body. The leak-proof sheet 90 is mainly excrement such as menstrual blood excreted from the excretion part, and prevents leakage of excrement flowing on the upper surface of the top sheet part 2. Here, the leak-proof sheet 90 includes, for example, a stretchable material such as a polymer elastic resin, so that a standing wall that can flexibly respond to the movement of the body when worn can be formed. That is, the standing wall can be formed by disposing an elastic member such as rubber on the leak-proof sheet 90. In addition, as described above, the leak-proof sheet 90 may extend to the end side in the width direction of the absorbent article 1 to constitute the side sheet 12 that is a part of the top sheet part 2.

  Examples of the leak-proof sheet 90 include a spunbond nonwoven fabric, a point bond nonwoven fabric, a through-air nonwoven fabric, and the like, and these may be subjected to a water repellent treatment. Among these, an SMS (spunbond / meltblown / spunbond) nonwoven fabric including a meltblown made of ultrafine fibers and having a very small interfiber distance is preferable.

  Further, as shown in FIGS. 2B and 2C, a side sheet 12 in which a leak-proof sheet 90 on the end side in the width direction of the absorbent article 1 extends in the width direction of the absorbent article 1; A waterproof sheet 95 is laminated between the back sheet portion 3 and the back sheet portion 3. The waterproof sheet 95 is disposed for the purpose of preventing the flip and the wrinkle of the hip flap portion H, and is made of, for example, water-repellent waterproof paper.

  Here, the top sheet portion 2 and the intermediate sheet portion 5 are joined together by being bonded together by a hot melt adhesive. Moreover, the surface sheet part 2, the intermediate sheet part 5, and the absorber part 4 are joined so that it may be bonded together with a hot-melt-adhesive. Moreover, the top sheet part 2 and the back sheet part 3 are joined so as to be bonded together by a joining part 6 formed by hot melt adhesive, thermocompression bonding, or the like. Moreover, the leak-proof sheet 90 and the surface sheet part 2 are joined by the predetermined | prescribed coupling | bond part formed by a hot-melt-adhesive or a thermocompression bonding process etc., for example. Moreover, the leak-proof sheet 90 and the back surface sheet part 3 are joined by the predetermined | prescribed coupling | bond part 6 formed by a hot-melt-adhesive or a thermocompression-bonding process. Overall, the surfaces of the sheet portions are bonded to each other by a hot melt adhesive, and the end portions of the sheet portions are bonded by the bonding portions 6 formed by thermocompression bonding.

  2 (b) and 2 (c), a portion where a waterproof sheet 95 is disposed between the top sheet portion 2 and the back sheet portion 3, for example, side flap portions W1, W2 and hip flap portions H. In, the leak-proof sheet 90 and the waterproof sheet 95 are joined by a hot melt adhesive. Moreover, the waterproof sheet 95 and the back surface sheet part 3 are joined by a hot melt adhesive.

Here, examples of the coating pattern for hot melt bonding include spiral coating, control seam coating, coater coating, curtain coater coating, and summit gun coating. The basis weight of the adhesive in hot melt bonding is preferably 1 g / m ² to 30 g / m ^{2, and} more preferably 3 g / m ² to 10 g / m ² . In the case of a pattern in which the adhesive is coated in a linear shape, the wire diameter is preferably 30 μm to 300 μm.

[1.2] Joining Part As shown in FIGS. 1, 3 and 4, the joining part 6 is formed along the outer edge of the absorbent article 1. In the present embodiment, the joint portion 6 includes joint portions 6A and 6B formed on the side of the hip flap portion H, joint portions 6C and 6D formed on the side flap portions W1 and W2, and the hip flap portion H. A joining portion 6E formed at the longitudinal end portion and a joining portion 6F formed at the longitudinal end portion of the front M are provided.

  In the present embodiment, a plurality of substantially semicircular seal portions 610 are continuously formed in the joint portions 6A, 6B, 6C, 6D, 6E, and 6F, respectively, and the joint portions 6A, 6B, 6C, 6D, and 6E are formed. , 6F is formed so that the inner side of the absorbent article 1 is substantially wavy.

  Each of the joint portions 6A, 6B, 6C, 6D, 6E, and 6F includes a first seal portion 61 and a second seal portion 63 that is formed continuously with the first seal portion 61. The joining width h <b> 1 in the second seal part 63 is formed to be narrower than the joining width h of the first seal part 61.

  In the present embodiment, the first seal portion 61 is formed at the approximate center of the substantially semicircular seal portion 610, and the interval p between the first seal portion 61 and the adjacent first seal portion 61 is preferably 5 mm to 50 mm, for example. In particular, 10 to 30 mm is preferable. When the interval p is 5 mm or less, the effect of suppressing the folding in the present invention is reduced. When the interval p is 50 mm or more, the seal portion including the second seal portion 63 at the interval p may be largely folded. This is not preferable. Here, in another embodiment, the interval p is not an interval between the first seal portion 61 and the first seal portion 61 adjacent thereto, but a predetermined seal having the same joining width h as the first seal portion 61. In some cases, the distance from the part is indicated.

  The joint length W of the substantially semicircular seal portion including the first seal portion 61 is not particularly limited, but can be set similarly to the interval p, for example.

  In the present embodiment, the first seal portion 61 and the second seal portion 63 are formed by a predetermined thermocompression bonding process (heat seal). In the first seal portion 61 and the second seal portion 63, fine thermocompression bonding portions (not shown) are continuously formed, and a set of thermocompression bonding portions (not shown) is the first seal portion 61 in the present embodiment. And a second seal portion 63.

  As described above, since the first seal portion 61 and the second seal portion 63 are formed by thermocompression bonding (heat sealing), the top sheet portion 2 and the leak-proof sheet 90 are in the width direction of the absorbent article 1. The first seal portion 61 and the second seal portion 63 in the side sheet 12 and the back sheet portion 3 that are formed to extend to be hardened as compared with other portions.

  Here, as shown in FIG. 3, the joining width h <b> 1 of the second seal portion 63 is formed to be narrower than the joining width h of the first seal portion 61. Specifically, the bonding width h of the first seal portion 61 can be set to 20 mm or less, preferably 10 mm or less. Since the 1st seal | sticker part 61 has hardened as mentioned above, a mounting | wearing property may deteriorate that the joining width h is 20 mm or more. In particular, when the first seal portion 61 is folded, the larger the joining width h, the more uncomfortable the user feels. Further, the joining width h1 of the second seal portion 63 is preferably as narrow as possible as compared with the joining width h of the first seal portion 61. However, in consideration of actual manufacturing, it is preferably 2 mm to 5 mm.

  As described above, by forming the first seal portion 61 and the second seal portion 63, the second seal portion 63 can be made less rigid than the first seal portion 61. Thus, by making the 2nd seal part 63 lower rigidity than the 1st seal part 61, in joined part 6, for example in joined parts 6A, 6B, 6C, 6D, 6E, and 6F, It can suppress that the whole junction part wraps around.

  Specifically, for example, when the absorbent article 1 is deformed, the joints 6A, 6B, 6C, and the like can be obtained by lightly bending or twisting lightly in the low-rigidity second seal portion 63 formed at a predetermined interval. It is possible to prevent the 6D, 6E, and 6F from being folded together. Further, for example, even when folded from the predetermined second seal portion 63 and the second seal portion 63 adjacent thereto, the folded region is a smaller region than the conventional large folded. In other words, chained folding can be suppressed and folding can be minimized.

  That is, for example, the joining portion 6 is cured by thermocompression bonding (heating sealing) or joining by a predetermined adhesive or the like, but the second seal portion 63 having a low rigidity so as to be easily deformed is formed at predetermined intervals. Thus, as described above, it is possible to suppress the occurrence of large folding at the joint 6.

  Furthermore, since the joint part 6A, 6B, 6C, 6D, 6E, 6F in the absorbent article 1 of the present embodiment is formed with the first seal part 61 and the second seal part 63 continuously, The predetermined region is tightly sealed, and mouth opening at the outer edge can be suitably suppressed.

  Here, since the 1st seal part 61 and the 2nd seal part 63 are continuing in joined part 6, as for absorbent article 1 in this embodiment, joined part 6 is in absorbent article 1, for example. It can be said that the absorbent article 1 includes a continuous seal portion that is continuously formed along the outer edge, and an intermittent seal portion that is continuous with the side surface of the continuous seal portion and formed along the continuous seal portion. . The intermittent seal portion includes a seal portion that is provided with a plurality of heat seals and a non-seal portion that is not provided with a plurality of heat seals, and the seal portion and the non-seal portion are outer edges of the absorbent article 1. They are formed alternately in the direction.

  From the above, the absorbent article 1 according to the present embodiment suppresses the bending of the joint portion 6 formed at the outer edge during use and the like, and thus suppresses deterioration of the feeling of wearing such as itching and rubbing, and at the outer edge. Open mouth and the like can be suppressed.

  Further, the joining portion 6 is passed between a pattern roll having protrusions formed in a predetermined shape on the surface and a smooth roll having a substantially flat surface in a state where predetermined pressure and heat are applied. For example, the joint part 6 in this embodiment can be formed. The formation of the joint portion 6 will be described again in the description of the fourth embodiment to be described later.

[1.3] Usage Mode An example of usage mode in the absorbent article of the present invention will be described with reference to FIGS. 1 and 4 using the absorbent article 1 in the first embodiment.

  With reference to FIG. 1 and FIG. 4, as a usage example of the absorbent article 1, a usage mode in a sleeping posture at bedtime will be described. As shown in FIG. 4, in the use state in the sleeping position, the rear side 860 of the absorbent article 1 is disposed substantially parallel to the floor surface, and the front side 840 is predetermined with respect to the rear side 860 of the absorbent article 1. It arrange | positions so that it may make an angle, in other words, may make a predetermined angle with respect to a floor surface. Similar to a normal absorbent article, the wing-shaped side flaps W1 and W2 are folded back and fixed to underwear or the like by the adhesive portion 7, the adhesive portion 8, the adhesive portion 71, and the adhesive portion 72.

  The wing-shaped side flaps W1 and W2 are formed such that a part of the side sheet 12 constituting the top sheet part 2 extends sideways and a part of the back sheet part 3 extends outward in the width direction. A waterproof sheet 95 (not shown) is disposed between the extended portion of the extended side sheet 12 and the extended portion of the back sheet portion 3, and each is joined by a hot melt adhesive. Furthermore, the outer edges of the wing-shaped side flaps W1 and W2 are joined by forming, for example, the joining portions 6C and 6D by thermocompression treatment (heating sealing).

  Here, when the absorbent article 1 is used in the sleeping posture at the time of sleeping or the like, for example, the rear side 860 is in a state of being in strong contact with the floor surface. The force that turns 6A, 6B, and 6E will work. In such a case, the absorbent article 1 in the present embodiment includes the first seal portion 61 and the second seal portion 63 having a narrower joint width than the first seal portion 61 as described above. Even when the absorbent article 1 is deformed by the movement of the body, it is possible to suppress the joint portion 6 from being bent back and deformed gently by suitably following the joint portion 6.

  In addition, when using for a long time such as at bedtime, in particular, the smaller the area of the joint portion 6 such as a heat seal portion, the less uncomfortable, and further, the joint portion 6 is prevented from being folded back greatly. Thus, discomfort can be reduced.

  Further, in the sleeping posture at bedtime or the like, excretion such as menstrual blood absorbed on the front side 840 may flow to the rear side 860 which is the rear side with respect to the bent portion 850. And when a long time passes in this state, excrement, such as menstrual blood, may flow on the back sheet portion 3 and reach the outer edge of the absorbent article 1. Even in such a case, since the joint portions 6A, 6B, and 6E are continuously joined, leakage of excrement such as menstrual blood can be suppressed.

  Here, in this embodiment, marks T and T are formed on the joining portions 6E and 6F formed on the end side in the longitudinal direction of the absorbent article 1, and the side formed on the side of the absorbent article 1 is formed. Marks S and S are formed on the joining portions 6C and 6D formed on the end side in the width direction of the flap portions W1 and W2. The marks T and T indicate a central portion in the width direction of the absorbent article 1. The marks S and S indicate the centers of the side flap portions W1 and W2 in the longitudinal direction. Each of the marks T, T, S, and S has a shape in which a cut is made in the bonded portion in the bonded portion 6. The marks T, T are used for alignment with the center line in the longitudinal direction of the crotch portion of the shorts, for example. The marks S and S are used for alignment with the minimum width portion of the crotch portion of the shorts. Therefore, the user can easily grasp the positional relationship between the shorts and the absorbent article 1 at a glance when fixing the absorbent article 1 according to the present embodiment to the shorts. Therefore, the mounting position is hardly displaced from front to back and from side to side, and a stable mounting state can be secured. Here, in the present embodiment, by forming the second seal portion 63 at the positions of the marks T, T, S, and S, both the function as a mark and the anti-folding function can be exhibited.

[2] Second and Third Embodiments Absorbent articles in the second and third embodiments will be described with reference to FIGS. In FIGS. 5 to 7, only the outer shape and the joint portion of the absorbent article are shown for easy understanding of the features of the present invention. As shown in FIGS. 5 and 6, in the absorbent article 1 </ b> A of the second embodiment, a joining portion 6 is formed along the entire outer edge. The joint portion 6 in the present embodiment includes a first seal portion 61A formed in a substantially square shape and a second seal portion 63A that is a non-sealed portion that is not joined. The first seal portion 61A and the second seal portion 63A that is a non-seal portion are alternately formed in the outer edge direction of the absorbent article 1A.

  The first seal portion 61A of the joint portion 6 in the present embodiment is hardened because, for example, it is thermocompression-bonded (heat-sealed), but the second seal portion 63A that is a non-seal portion is formed at a predetermined interval. Therefore, generation | occurrence | production of the big folding in the junction part 6 can be suppressed.

  Specifically, for example, when the absorbent article 1A is deformed, the joining portion 6 is integrated by bending slightly or twisting the second seal portion 63A formed at a predetermined interval and having low rigidity. Can be suppressed.

  As shown in FIG. 6, for example, even when folded from a predetermined second seal portion 63A and a second seal portion 63A (not shown) adjacent to the second seal portion 63A, the folded region has a conventional large folding. This is a small area. In other words, chained folding can be suppressed and folding can be minimized.

  Here, the junction width h and the interval p are as defined and explained in the first embodiment.

  As shown in FIG. 7, in the absorbent article 1 </ b> B in the third embodiment, a joint 6 is formed along the entire outer edge, similarly to the absorbent article 1 </ b> A in the second embodiment. The absorbent article 1B in the present embodiment includes side flap portions WB on both sides, and the joint portion 6 is also formed on this side flap portion WB.

  Similar to the second embodiment, the joint portion 6 in the present embodiment includes a first seal portion 61B formed in a substantially square shape and a second seal portion 63B that is a non-sealed portion that is not joined. The first seal portion 61B and the second seal portion 63B, which is a non-seal portion, are alternately formed in the outer edge direction of the absorbent article 1B.

  The first seal portion 61B of the joint portion 6 in the present embodiment is hardened because, for example, it is subjected to thermocompression bonding (heat seal), but the second seal portion 63B that is a non-seal portion is formed at a predetermined interval. Therefore, generation | occurrence | production of the big folding in the junction part 6 can be suppressed.

  Specifically, for example, when the absorbent article 1B is deformed, the joint portion 6 is integrally formed by lightly bending or lightly twisting the second seal portion 63B formed at a predetermined interval and having low rigidity. Can be suppressed. Further, for example, even when folded from the predetermined second seal part 63B and the second seal part 63B adjacent thereto, the folded area is a smaller area than the conventional large folded. In other words, chained folding can be suppressed and folding can be minimized. Here, the junction width h and the interval p are as defined and explained in the first embodiment.

[3] Fourth to Eighth Embodiments Absorbent articles in the fourth to eighth embodiments will be described with reference to FIGS. 8 to 13. In FIG. 8 to FIG. 12, only the outer shape and the joint portion of the absorbent article are shown for easy understanding of the features of the present invention. As shown in FIG. 8, in the absorbent article 1 </ b> C of the fourth embodiment, a joint portion 6 is formed along the entire outer edge. The joint portion 6 in the present embodiment includes a first seal portion 61C having a joint width h and a second seal portion 63C having a joint width h1 narrower than the first seal portion 61. The first seal portions 61C and the second seal portions 63C are formed continuously and are alternately formed in the outer edge direction of the absorbent article 1C. The inner shape of the absorbent article 1 </ b> C of the joint portion 6 is formed to be substantially meandering.

  The first seal portion 61C and the second seal portion 63C of the joint portion 6 in the present embodiment are hardened because, for example, the thermocompression bonding process (heat seal) is performed, but the second seal portion 63C having a narrow joint width is provided. Since they are formed at predetermined intervals, it is possible to suppress the occurrence of large folding at the joint 6.

  Specifically, for example, when the absorbent article 1C is deformed, the joint portion 6 is integrally formed by lightly bending or lightly twisting the second seal portion 63C formed at a predetermined interval and having low rigidity. Can be suppressed. Further, for example, even when folded from a predetermined second seal portion 63C and a second seal portion 63C adjacent thereto, the folded region is a smaller region than the conventional large folded. In other words, chained folding can be suppressed and folding can be minimized. Here, the junction widths h and h1 and the interval p are as defined and explained in the first embodiment.

  As shown in FIG. 13, the joining portion 6 in the absorbent article 1 </ b> C in the present embodiment includes a pattern roll 310 in which a protruding portion 451 is formed in a predetermined shape on the surface 45, and a smooth roll 320 having a substantially smooth surface 47. In the meantime, by passing the absorbent article 1 </ b> C with a predetermined pressure and heat applied, the joint portion 6 in the present embodiment can be formed. Here, normally, in consideration of the touch, the pattern roll 310 having the projecting portion 451 is pressed from the front surface sheet portion 2 side, and the smooth roll 320 is pressed from the back surface sheet portion 3 side to connect the joint portion 6. To form.

  As shown in FIG. 9, in the absorbent article 1 </ b> D of the fifth embodiment, a joining portion 6 is formed along the entire outer edge. The joint portion 6 in the present embodiment is formed such that a plurality of substantially semicircular seal portions 610D are continuously formed, and the inner shape of the joint portion 6 in the absorbent article 1D is substantially wave-like. . The first seal portion 61D is formed at the approximate center of a substantially semicircular seal portion 610D, and the second seal portion 63D is a seal portion 610D on a predetermined approximately semicircle and an approximately semicircle adjacent thereto. And the seal portion 610D. That is, the absorbent article 1D includes the first seal portion 61D having a bonding width h and the second seal portion 63D having a bonding width h1 narrower than the first seal portion 61D. The first seal portions 61D and the second seal portions 63D are alternately formed in the outer edge direction of the absorbent article 1D.

  The first seal portion 61D and the second seal portion 63D of the joint portion 6 in the present embodiment are cured because, for example, the thermocompression treatment (heat seal) is performed, but the second seal portion 63D having a narrow joint width is used. Since they are formed at predetermined intervals, it is possible to suppress the occurrence of large folding at the joint 6. The explanation about the suppression of the folding is the same as the explanation in the fourth embodiment. Further, the junction widths h and h1 and the interval p are as defined and explained in the first embodiment.

  As shown in FIG. 10, in the absorbent article 1 </ b> E of the sixth embodiment, a joint portion 6 is formed along the entire outer edge. The joint portion 6 in the present embodiment includes a first seal portion 61E having a joint width h and a second seal portion 63E having a joint width h1 narrower than the first seal portion 61E. The first seal portion 61E and the second seal portion 63E are formed continuously, and are alternately formed in the outer edge direction of the absorbent article 1E. The inner shape of the absorbent article 1E of the joint 6 is formed so as to be substantially meandering.

  The first seal portion 61E and the second seal portion 63E of the joint portion 6 in the present embodiment are hardened because, for example, the thermocompression treatment (heat seal) is performed, but the second seal portion 63E having a narrow joint width is formed. Since they are formed at predetermined intervals, it is possible to suppress the occurrence of large folding at the joint 6. The explanation about the suppression of the folding is the same as the explanation in the fourth embodiment. Further, the junction widths h and h1 and the interval p are as defined and explained in the first embodiment.

  As shown in FIG. 11, in the absorbent article 1 </ b> F of the seventh embodiment, a joining portion 6 is formed along the entire outer edge. The joint portion 6 in the present embodiment is formed such that a plurality of substantially semicircular seal portions 610F are continuously formed, and the shape of the inside of the absorbent article 1F of the joint portion 6 is substantially wavy. . The first seal portion 61F is formed substantially at the center of the substantially semicircular seal portion 610F, and the second seal portion 63F includes a predetermined substantially semicircular seal portion 610F and a substantially semicircle adjacent thereto. And the seal portion 610F. That is, the absorbent article 1F includes a first seal portion 61F having a joining width h and a second seal portion 63F having a joining width h1 that is narrower than the first seal portion 61F, as well as the first seal portion 61F, The two seal portions 63F are alternately formed in the outer edge direction of the absorbent article 1F.

  The first seal portion 61F and the second seal portion 63F of the joint portion 6 in the present embodiment are cured because, for example, they are subjected to thermocompression bonding (heat seal), but the second seal portion 63F having a narrow joint width is used. Since they are formed at predetermined intervals, it is possible to suppress the occurrence of large folding at the joint 6. The explanation about the suppression of the folding is the same as the explanation in the fourth embodiment. Further, the junction widths h and h1 and the interval p are as defined and explained in the first embodiment.

  As shown in FIG. 12, in the absorbent article 1G of the eighth embodiment, joint portions 6A and 6B are formed along the outer edge of the side portion of the hip flap portion HG. Absorbent article 1G in the present embodiment is a modification of absorbent article 1 in the first embodiment, and is provided with first seal portion 61 and second seal portion 63 only on the side of hip flap portion HG. Portions 6A and 6B are formed.

  The joint portions 6A and 6B in the present embodiment are formed such that a plurality of substantially semicircular seal portions 610 are continuously formed, and the inner shape of the joint portion 6 in the absorbent article 1G is substantially wavy. ing. The first seal portion 61 is formed at a substantially center of a substantially semicircular seal portion 610, and the second seal portion 63 is a seal portion 610 on a predetermined substantially semicircle and a substantially semicircular shape adjacent thereto. The seal portion 610 is formed. The first seal portion 61 and the second seal portion 63 are formed continuously, and are alternately formed in the outer edge direction of the absorbent article 1G.

  The first seal portion 61 and the second seal portion 63 of the joint portion 6 in the present embodiment are hardened because, for example, the thermocompression treatment (heat seal) is performed, but the second seal portion 63 having a narrow joint width is provided. Since they are formed at a predetermined interval, it is possible to suppress the occurrence of large folding at the joints 6A and 6B. The explanation about the suppression of the folding is the same as the explanation in the fourth embodiment.

[4] Each component Each component is described in detail below.
The liquid permeable region constituting all or part of the surface sheet portion 2 is a resin film having a large number of liquid permeable holes, a net-like sheet portion having a large number of meshes, a liquid permeable nonwoven fabric, or a woven fabric. Formed with. As the resin film and the net-like sheet portion, those formed of polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), or the like can be used. Moreover, as a nonwoven fabric, the spunlace nonwoven fabric formed from cellulose fibers, such as rayon, a synthetic resin fiber, etc., the air through nonwoven fabric formed from the said synthetic resin fiber, etc. can be used. Moreover, as a raw material, natural products capable of biodegradability such as polylactic acid, chitosan, polyalginic acid and the like can be used. In addition, a large number of liquid-permeable holes may be formed, and a silicone-based or fluorine-based water-repellent oil agent may be applied to make it difficult for body fluids to adhere to the outer surface.

Also, the basis weight is preferably 100 g / ^{m 2} to 15, more preferably 50 g / ^{m 2} to 20, particularly preferably 40 g / ^{m 2} to 10. If the basis weight is 15 g / m ² or less, sufficient surface strength cannot be obtained, and there is a risk of breaking during use. Moreover, in the case of 100 g / m < ² > or more, excessive wrinkle will develop and a discomfort will be produced during use. Furthermore, in the case of using for a long time, when it exceeds 40 g / m ² , the liquid is held by the top sheet portion 2 and is maintained in a solid state, which makes it uncomfortable. Further, the density is not particularly limited as long as it is 0.12 g / cm ³ or less and liquid permeable. When the density is higher than this, it is difficult to smoothly transmit between the fibers of the top sheet portion. In the case of menstrual blood, those having a low density are preferred because they are more viscous than urine and the like.

  When the liquid permeable region constituting all or part of the top sheet portion 2 is an apertured film such as a film in which a large number of liquid permeable apertures are formed as described above, the aperture diameter is 0.05 mm. Preferably, the pitch is in the range of 3 mm or less, the pitch is in the range of 0.2 mm or more and 10 mm or less, and the aperture area ratio is in the range of 3% or more and 30% or less. As a manufacturing method, a surface sheet portion obtained by a so-called PFW method in which a film is passed through a pattern drum whose opening condition has been changed in advance and suction is sucked, or a PFW method having a uniform opening condition. For example, a method of further adding an opening to the region straddling the crease line by pin embossing may be used. The arrangement of the apertures is not particularly limited, such as a staggered pattern, a lattice pattern, or a wavy pattern. Examples of the shape of the opening include a round shape, an elliptical shape, and a square shape. Moreover, the valve may be provided in the periphery of the opening part. As the surface sheet portion 2, a porous or non-porous nonwoven fabric or a porous plastic sheet portion can be preferably used.

  The back sheet 3 is made of a material that can prevent excrement absorbed by the absorber 4 from leaking outside. In addition, by using a moisture-permeable material, it is possible to reduce stuffiness at the time of wearing, and to reduce discomfort at the time of wearing. Such materials include, for example, a liquid-impermeable film mainly composed of polyethylene (PE), polypropylene (PP), etc., a breathable film, a composite in which a liquid-impermeable film is laminated on one side of a nonwoven fabric such as spunbond. For example, the seat portion. Preferably, a hydrophobic nonwoven fabric, a water-impermeable plastic film, a laminate sheet portion of a nonwoven fabric and a water-impermeable plastic film, or the like can be used. Further, an SMS nonwoven fabric sandwiched between a melt-blown nonwoven fabric with high water resistance or a strong spunbond nonwoven fabric may be used.

  The intermediate sheet portion 5 is a liquid permeable sheet disposed between the top sheet portion 2 and the absorber portion 4. The material used for the intermediate sheet portion 5 includes a resin film in which a large number of liquid permeable holes are formed as in the liquid permeable region constituting all or part of the top sheet portion 2, and a net shape having a large number of meshes. It is formed of a sheet portion, a liquid permeable nonwoven fabric, or a woven fabric. As the resin film and the net-like sheet portion, those formed of polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), or the like can be used. Moreover, as a nonwoven fabric, the spunlace nonwoven fabric formed from cellulose fibers, such as rayon, a synthetic resin fiber, etc., the air through nonwoven fabric formed from the said synthetic resin fiber, etc. can be used. Further, the intermediate sheet portion 5 serves as a support for the absorber portion 4 and can impart flexibility and form stability to the absorber portion 4.

The absorber part 4 is comprised by the cushion arrange | positioned at the surface sheet part 2 side, and an absorber material. The absorbent material has a function of absorbing and holding a liquid such as menstrual blood, and is preferably bulky, hardly deformed, and has little chemical irritation. For example, the absorber material which consists of a fluffy pulp or an airlaid nonwoven fabric and a superabsorbent polymer can be illustrated. Examples of the fluffy pulp include artificial cellulose fibers such as chemical pulp, cellulose fiber, rayon, and acetate. As an air laid nonwoven fabric, the nonwoven fabric which heat-bonded the pulp and the synthetic fiber, or was fixed with the binder can be illustrated, for example. Examples of the superabsorbent polymer (SAP) include starch-based, acrylic acid-based, and amino acid-based particulate or fibrous polymers. Moreover, as a nonwoven fabric, nonwoven fabrics, such as a spun lace, a spun bond, a thermal bond, a melt blown, a needle punch, an air through, are used, for example. Examples of the raw material fibers constituting the nonwoven fabric include synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and polyamide, recycled fibers such as rayon and cupra, and natural fibers such as cotton. As the cushion, for example, liquid permeable paper or cellulose sheet portion is used. As an example of the absorbent body part 4 in which the cushion and the absorbent material are combined, the pulp has a basis weight of 900 g / m ² , the polymer has a basis weight of 20 g / m ² (the polymer is dispersed throughout), and the pulp and the polymer are the whole And a mixture evenly distributed in a tissue having a basis weight of 15 g / m ² .

  Although the shape and structure of the absorber part 4 can be changed as needed, it is necessary to make the total absorption amount of the absorber part 4 correspond to the design insertion amount and desired application as an absorbent article. In addition, the size and absorption capacity of the absorbent body portion 4 are changed according to wearers from infants to adults.

  The first liquid-proof groove 10 includes a front U-shaped portion that is formed in a substantially U shape that protrudes forward in the longitudinal direction, and an inner side that extends in the longitudinal direction so as to be continuous from both ends of the front U-shaped portion. And a rear U-shaped part formed in a substantially U-shape that connects the rear side end part in the inner side part and projects rearward in the longitudinal direction.

  The first liquid-proof groove 10 as a whole has a vertically long and substantially elliptical shape, and is formed so as to surround the absorber 4.

  The second liquid-proof groove 11 has an outer side portion formed so as to extend in the longitudinal direction at substantially equal intervals on the outer side of the inner side portion in the first liquid-proof groove 10, and a rear side end portion of the outer side portion. And an outer U-shaped portion that is formed in a substantially U shape that projects to the rear side in the longitudinal direction.

  The first liquid-proof groove 10 and the second liquid-proof groove 11 are formed by a pressure-bonding portion 9 that is continuously formed by a predetermined pressure-bonding process. The crimping part 9 is formed by a predetermined crimping process using a heating roller. For example, a roll having a flat surface is applied to the back surface sheet portion 3 side of the absorbent body portion 4, and a heating roll having a convex portion of a predetermined pattern is applied to the front surface side of the top sheet portion 2 to be pressurized and heated. The As a result, in the crimping part 9, the absorber part 4 and the top sheet part 2 are positioned between a plurality of high-density crimping parts that are almost crimped to a film and the high-density crimping part adjacent to the high-density crimping part. Thus, a plurality of medium-density crimping portions that are not film-like but have a higher density than the region other than the crimping portion 9 are formed. In all parts of the pattern of the crimping part 9, the high-density crimping part and the medium-density crimping part are alternately formed, and a linear shape that is recessed from the surface (body side) of the absorbent article 1 to the back sheet part 3 side. A first liquid-proof groove 10 and a second liquid-proof groove 11 are formed.

  The width dimension of the first liquid-proof groove 10 and the second liquid-proof groove 11 is, for example, 0.5 mm to 10 mm, preferably 1 mm to 5 mm in the absorbent article 1 of the first embodiment. When the width dimension is 0.5 mm or less, the top sheet portion 2 and the absorber portion 4 are only cut. When the width dimension is 10 mm or more, fit, usability, absorbability, etc. are lowered.

  Further, the distance between the arrangement of the first liquid-proof groove 10 and the second liquid-proof groove 11 is 1 mm to 10 mm, preferably 5 mm to 8 mm. When the distance is 1 mm or less, the fit property, the feeling of use and the like are lowered. In the case where the distance between the arrangements is 10 mm or more, the fit property is liable to be lowered and the absorbent body part 4 is likely to be twisted.

  Further, the distance between both side portions of the first liquid-proof groove 10 is 20 mm to 60 mm, preferably 30 mm to 40 mm. When the interval is 20 mm or less, the absorbent body 4 cannot continue to contact the excretory part (vaginal opening), and a gap between the body and the absorbent article 1 is generated and is likely to leak. When the interval is 60 mm or more, the central portion of the absorbent body portion 4 is deformed into a concave shape, and a gap between the body and the absorbent article 1 is generated and is likely to leak.

  The pressure-sensitive adhesives in the pressure-sensitive adhesive part 7, the pressure-sensitive adhesive part 8, the pressure-sensitive adhesive part 71, and the pressure-sensitive adhesive part 72 are cellulose adhesives that are in close contact with the skin and exhibit adhesive strength, in addition to adhesives such as acrylic adhesives and rubber adhesives. Polyamino acid gels such as alcohols, gelatin, polyglutamic acid, and polylysine can also be used.

It is a top view of the absorptive article in a 1st embodiment of the present invention. It is sectional drawing simplified in order to demonstrate the structure of the absorbent article in 1st Embodiment of this invention. It is an enlarged view of the area | region A in FIG. It is a perspective view in the use condition of the absorptive article in a 1st embodiment of the present invention. It is (a) top view of the absorptive article in a 2nd embodiment, and (b) is an enlarged view of field B. It is a figure showing the state where the seal part of the absorptive article in a 2nd embodiment turned up. It is (a) top view of an absorptive article in a 3rd embodiment, and (b) is an enlarged view of field C. It is (a) top view of the absorptive article in a 4th embodiment, and (b) is an enlarged view of field D. It is (a) top view of an absorptive article in a 5th embodiment, and (b) is an enlarged view of field E. It is (a) top view of an absorptive article in a 6th embodiment, and (b) is an enlarged view of field F. It is (a) top view of an absorptive article in a 7th embodiment, and (b) is an enlarged view of field G. It is a top view of an absorptive article in an 8th embodiment. It is a figure explaining the sealing process of the absorbent article in 4th Embodiment. It is a top view of the absorptive article in conventional example 1. It is a top view of the absorptive article in conventional example 2. It is a top view of the absorptive article in conventional example 3. It is a top view of the absorptive article in conventional example 4. It is a figure which shows the state where the longitudinal direction edge part of the seal | sticker part in the absorbent article of the prior art example 1 was return | folded. It is a figure which shows the state by which the longitudinal direction side part of the seal | sticker part in the absorbent article of the prior art example 1 was return | folded.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Absorbent article 2 Top sheet part 3 Back sheet part 4 Absorber part 5 Intermediate sheet part 6 Joint part 61 1st seal part 63 2nd seal part

Claims (7)

At least a part of the liquid-permeable top sheet part, a liquid-impermeable back sheet part, an absorber part disposed between the top sheet part and the back sheet part, the top sheet part, and the An absorptive article comprising a joining part for joining the back sheet part,
The joint portion is formed along the outer edge of the absorbent article, and includes a plurality of first seal portions and one or a plurality of second seal portions,
The second seal part is an absorbent article having a lower rigidity than the first seal part.   The absorbent article according to claim 1, wherein the second seal part is a non-seal part or a seal part having a narrower joint width than the first seal part.   The absorbent article according to claim 1 or 2, wherein the first seal part and the second seal part are alternately formed in the outer edge direction. At least a part of the liquid-permeable top sheet part, a liquid-impermeable back sheet part, an absorber part disposed between the top sheet part and the back sheet part, the top sheet part, and the An absorptive article comprising a joining part for joining the back sheet part,
The joint portion is formed along the outer edge of the absorbent article, and includes a plurality of first seal portions and one or a plurality of second seal portions,
The second seal part is a non-seal part,
The absorbent article, wherein the first seal part and the second seal part are alternately formed in the outer edge direction. At least a part of the liquid-permeable top sheet part, a liquid-impermeable back sheet part, an absorber part disposed between the top sheet part and the back sheet part, the top sheet part, and the An absorptive article comprising a joining part for joining the back sheet part,
The joint portion is formed along the outer edge of the absorbent article, and includes a plurality of first seal portions and one or a plurality of second seal portions,
The second seal portion is an absorbent article that is formed continuously with the first seal portion and has a narrower joint width than the first seal portion.   The absorbent article according to claim 5, wherein at least one side portion of the joint portion is formed in a substantially meandering shape or a substantially wave shape.   The absorptive article according to claim 5 or 6 whose joined width of said 1st seal part is 20 mm or less.

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