JP2011152209A - Absorbent article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an absorbent article allowing a user to have a sense of comfort in wearing by suppressing excessive swelling or creases caused by looseness etc. in the crotch part when the article is worn. <P>SOLUTION: The absorbent article 1A includes: an absorber 22 formed of a front end part 42, a center part 44 and a rear end part 46 in the longitudinal direction; and at least a pair of left and right slits 48a and 48b penetrating from the front side to the rear side of the absorber 22, formed in an area from the center part 44 to a part of the front end part 42. The pair of slits 48a and 48b are formed to bend in the front end part 42 in such a way that the space between the slits 48a and 48b becomes wider toward the respective side edge sides of the absorber 22. When the absorbent article is worn, at least part of the space between the slits 48a and 48b is closed as the absorber 22 is compressed in the lateral direction, so that the width at least in the center part 44 of the absorber 22 is reduced. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an absorbent article such as a disposable diaper and a urine pad provided with an absorber, a top sheet made of a liquid-permeable material, a back sheet made of a liquid-impermeable material, and the like. More specifically, when the absorbent article is worn, the width of the absorbent body disposed in the crotch portion is reduced, and excessive swelling such as slack in the crotch portion and the occurrence of wrinkles are suppressed, while the front body side and the latter half side are suppressed. It is related with the absorbent article which a body side fits to a wearer's body, and can obtain a favorable feeling of wear.

  Conventionally, absorbent articles are used in disposable diapers (including urine pads) that absorb excretory fluids such as urine, sanitary napkins that absorb menstrual blood, and cage sheets that absorb cages.

  Among these, tape-type disposable diapers, pants-type disposable diapers, and the like are known as disposable diapers. For example, a pants-type disposable diaper is made of an absorbent body 22 and at least a part made of a liquid-permeable material so as to cover the surface of the absorbent body 22 like the pants-type disposable diaper 100 shown in FIGS. 14A and 14B. An absorbent main body having a top sheet 18 disposed and a back sheet 20 made of a liquid-impermeable material and disposed so as to cover the back surface of the absorber 22, and an exterior member 16; It consists of each part of the crotch part 4 and the back body 6, and the corresponding side edges 2a, 6a (2b, 6b) of the front body 2 and the back body 6 are joined to each other, and one waist opening 10 and a pair of legs It is a disposable diaper in which surrounding openings 12 (12a, 12b) are formed. Here, FIG. 14A is a perspective view showing a conventional pants-type disposable diaper, and FIG. 14B is a schematic plan view showing the pants-type disposable diaper of FIG. 14A as viewed from the top sheet side.

  According to such a disposable diaper, the excrement of the wearer is absorbed by the absorber through the liquid-permeable portion of the top sheet and is externally provided by the back sheet made of a liquid-impermeable material. Therefore, excrement can be held inside the diaper.

  Such an absorbent is, for example, a fluff pulp, a super absorbent polymer (hereinafter referred to as “SAP”), an absorbent material such as a hydrophilic sheet, or a single layer or a multi-layer mat (for example, A rectangular shape is used. In addition, as this absorbent body, it is easy to bend according to changes in the wearer's body shape and posture, and in order to improve fit, a groove portion is formed along the longitudinal direction, a through hole is formed, etc. Are also known (see, for example, Patent Documents 1 to 3).

Japanese Patent No. 3616077 Japanese Patent No. 3746706 Japanese Utility Model Publication No. 2-84623

  However, for example, when an absorbent article using the above-described rectangular absorbent body, for example, a disposable diaper or a urine pad, is worn, the absorbent body located in the crotch part is loosened and wrinkled, and a good wearing feeling There was a problem that it was not possible to obtain, or looked bad when worn. In particular, absorbent articles such as disposable diapers used by infants and the like have a design with excellent design such as character design on the outer surface of the diaper, and such a design is distorted by loosening of the absorbent body. Therefore, there has been a problem that the designability is impaired.

  In addition, even if it is a disposable diaper for adults, the slack of the crotch part bulges the loosened area toward the outside, so even if the diaper does not fit well inside the clothes, The diaper swells around the waist of the clothes, which has the problem of deteriorating the appearance of the clothes. In particular, when the circumference of the waist of the clothes swells, it is easily recognized by another person that the diaper is worn, and thus the resistance to the diaper increases.

  In addition, the absorbent article using the hourglass-shaped absorber has a narrow width in advance at the crotch portion, so that the slack at the crotch portion is suppressed compared to the rectangular absorber described above. On the contrary, since it is difficult to form a bulge on the front body side and the back body side, on the line from the crotch part to the front body or the back body, a feeling of twitching (feeling of tension) is given, There was a problem that the absorbent article was too close to the wearer, and on the contrary, the appearance at the time of wearing was deteriorated. Further, in the case where the absorbent article is a disposable diaper, if the crotch portion adheres in this manner, there is a problem in that a space for holding the stool cannot be secured, causing leakage.

  As described above, the conventional absorbent article can be loosened by the absorbent body disposed in the crotch part, or conversely, it may cause a sense of twitching. Development of an absorbent article that can fit the wearer's body and obtain a good wearing feeling is desired.

  The present invention has been made to solve such problems of the prior art, and when the absorbent article is worn, the width of the absorbent body arranged in the crotch portion is reduced, the slack in the crotch portion, etc. It is an object of the present invention to provide an absorbent article in which the front body side and the rear body side fit the wearer's body and a good wearing feeling can be obtained while suppressing excessive swelling and wrinkles.

  As a result of intensive investigations to solve the problems of the prior art as described above, the inventor is compressed in the width direction from the center portion of the absorber to a part of the front end portion, so that the gap It was conceived that the above problem could be solved by forming a pair of slits configured such that at least a part of the slit was closed and the width of the absorber was reduced, and the present invention was completed. Specifically, the following absorbent articles are provided by the present invention.

[1] An absorber, a top sheet that is at least partially made of a liquid-permeable material and arranged to cover the surface of the absorber, and a liquid-impermeable material that covers the back surface of the absorber An absorbent article provided with a back sheet, the absorbent body being formed from the front end portion, the central portion, and the rear end portion in the longitudinal direction thereof, Is formed with at least a pair of left and right slits penetrating from the center side to a part of the front end portion from the front surface side to the back surface side of the absorber. It is formed to be bent or curved so that the distance between the pair of slits becomes wider toward the respective side edges of the absorber, and the absorber is compressed in the width direction when worn. To Ri, at least partially closed, the absorbent article being configured such that the width is reduced in at least the central portion of the absorber of gaps between the slits constituting the pair of slits.

[2] The pair of slits are formed in a pair on the left and right sides with a central axis from the edge on the front end side to the edge on the rear end side of the absorber as a boundary. Absorbent article as described in 1.

[3] The absorbent article according to [2], wherein the pair of slits are formed symmetrically about the central axis.

[4] The absorbent article according to [2], wherein the pair of slits are formed such that a distance from the central axis is different between the left and right slits.

[5] The [1] to [4], wherein the pair of slits are formed from a part of the rear end part of the absorber to a part of the front end part via the central part. The absorbent article in any one of.

[6] The pair of slits are formed to be bent or curved at the rear end portion so as to increase the distance between the pair of slits toward the side edges of the absorber. The absorbent article according to the above [5].

[7] Any of [1] to [6], wherein each of the slits constituting the pair of slits is formed so that the width of the gap between the slits is widened at least at a part of the central portion. Absorbent article according to crab.

[8] In any one of the above [1] to [7], each of the slits constituting the pair of slits is formed such that a shape of a terminal portion in a cross section parallel to the absorber surface is curved. The absorbent article as described.

[9] One or more separation slits each having a length shorter than the pair of slits are further formed in the absorber on the end side of the absorber further than the position where the pair of slits are formed. The absorbent article according to any one of [1] to [8].

[10] The absorption according to any one of [1] to [9], further including an elastic material arranged in an extended state along the width direction of the absorber at least in the central portion of the absorber. Sex goods.

[11] The absorbent article according to any one of [1] to [10], wherein at least a pair of three-dimensional gathers are provided on both sides of the absorber.

[12] The absorbent article according to any one of [1] to [10], wherein at least a pair of leg elastic members are provided on both sides of the absorbent body.

  According to the present invention, when the absorbent article is worn, the width of the absorbent body disposed in the crotch portion is reduced, and excessive swelling and wrinkles such as slack in the crotch portion are suppressed, while the front body side and the rear half are suppressed. The body side can fit the wearer's body appropriately, and a good wearing feeling can be obtained. Moreover, the appearance at the time of wearing a diaper is also favorable.

  For this reason, for example, when the absorbent article of the present invention is a disposable diaper used by an infant or the like having a design such as a character design on its outer surface, the design may be distorted by slack or wrinkles. Can be effectively prevented, and the design properties of the above-mentioned designs and the like are not impaired.

  Further, in the absorbent article of the present invention, since the slack of the crotch part is suppressed, it is difficult for excessive swelling to occur in the crotch part, and the absorbent article is easy to fit inside the garment, and the appearance of the clothes is improved. For this reason, it is difficult for others to easily recognize that a diaper is worn, and resistance when wearing an absorbent article can be reduced. Also, in the crotch, the side edge portion of the absorber is bent along the slit into a concave shape, and a pocket-shaped space is formed in the crotch, so that the excreted urine is absorbed by the absorber Meanwhile, urine is held in the space, and leakage to the outside can be prevented. Furthermore, since the stool that is difficult to be absorbed by the absorbent body fits in the pocket-shaped space, clothes and the like are not easily contaminated.

  Furthermore, compared to conventional absorbent articles that use an hourglass-type absorbent body, the crotch portion is not too close, and a space to be retained when excreting feces can be secured well. Leakage can be effectively prevented.

  In addition, the slit which closes at the time of wear can change the degree of the blockage freely according to a wearing state (namely, the tightening condition of an absorptive article). When it adheres too much, the slit is not completely closed (that is, the slit is maintained leaving some gaps), and a good wearing feeling can be obtained. As described above, even when stool is excreted, if a sufficient space for securing the stool is not obtained, a part of the slit closed by the pressure of the excreted stool is opened, and the stool leaks. Can be effectively prevented.

It is a perspective view which shows the underpants type disposable diaper as one Embodiment of the absorbent article of this invention. It is a schematic plan view which shows the state which developed the underpants type disposable diaper of Drawing 1A and was seen from the top sheet side. It is a schematic sectional drawing which shows the A-A 'cross section of the underpants type disposable diaper of FIG. 1B. It is a mimetic diagram showing the state where the absorber bent along a pair of right and left slits when wearing one embodiment of the absorptive thing of the present invention. It is a mimetic diagram showing the state where the absorber bent along a pair of right and left slits when wearing one embodiment of the absorptive thing of the present invention. It is a top view which shows the tape-type disposable diaper as other embodiment of the absorbent article of this invention, is a figure which expand | deploys a tape-type disposable diaper and shows the state seen from the top sheet side. It is a top view which shows the urine pad as other embodiment of the absorbent article of this invention. It is a top view of the absorber used for other embodiments of the absorptive article of the present invention. It is a top view of the absorber used for other embodiment of the absorbent article of this invention. It is a top view of the absorber used for other embodiment of the absorbent article of this invention. It is a top view of the absorber used for other embodiment of the absorbent article of this invention. It is a top view of the absorber used for other embodiment of the absorbent article of this invention. It is a top view of the absorber used for other embodiment of the absorbent article of this invention. It is a top view of the absorber used for other embodiment of the absorbent article of this invention. It is a top view of the absorber used for other embodiment of the absorbent article of this invention. It is a top view of the absorber used for other embodiment of the absorbent article of this invention. It is a schematic plan view which shows the state which developed the underpants type disposable diaper as other embodiment of the absorptive article of the present invention, and was seen from the top sheet side. It is a schematic sectional drawing which shows the B-B 'cross section of the underpants type disposable diaper of FIG. 13A. It is a perspective view which shows the conventional pants type disposable diaper. It is a schematic plan view which shows the state which unfolded the underpants type disposable diaper of Drawing 14A, and was seen from the top sheet side.

  Hereinafter, the form for implementing the absorbent article of this invention is demonstrated concretely. However, the present invention broadly encompasses absorbent articles having the invention specific items, and is not limited to the following embodiments.

[1] Absorbent article:
One embodiment of the absorbent article of the present invention, like the absorbent article 1A shown in FIGS. 1A to 1C, is composed of the absorbent body 22 and at least a part of a liquid-permeable material, and covers the surface of the absorbent body 22. The absorbent article 1 </ b> A includes a top sheet 18 arranged so as to perform and a back sheet 20 made of a liquid-impermeable material and arranged to cover the back surface of the absorber 22. Such an absorbent article can be used as a disposable diaper (including a urine pad) that absorbs excreted fluid such as urine, a sanitary napkin that absorbs menstrual blood, and a sheet of a cage that absorbs cage.

  In addition, in FIG. 1A-FIG. 1C, the example in case the absorbent article 1A is a pants-type disposable diaper is shown. Such a pants-type disposable diaper (absorbent article 1A) is composed of the front body 2, the crotch 4 and the back body 6, and corresponding side edges 2a, 6a (2b, 2b, 2) of the front body 2 and the back body 6. 6b) are joined together to form one waist opening 10 and a pair of leg openings 12 (12a, 12b). A pants-type disposable diaper 1A shown in FIGS. 1A to 1C includes an absorbent body 22, a top sheet 18 and a back sheet 20 as constituent elements of an exterior member 16 constituting a front body 2, a crotch part 4 and a back body 6. It is an absorbent article in which the absorbent main body 14 is disposed, and the exterior member 16 is composed of two nonwoven fabric sheets (inner sheet, outer sheet), and the leg elastic member 50 and the waist circumference between the two nonwoven fabrics. The example which pinched | interposed and fixed the elastic material 52 and the belly circumference elastic material 54 is shown.

  In the absorbent article of this invention, as shown to FIG. 1A-FIG. 1C, the absorber 22 is formed from each part of the front-end part 42, the center part 44, and the rear-end part 46 in the longitudinal direction, and an absorber. 22, at least a pair of left and right slits 48 (48a, 48b) penetrating from the front surface side to the back surface side of the absorber 22 is formed from the central portion 44 to a part of the front end portion 42. 48a and 48b are formed to be bent or curved at the front end portion 42 toward the respective side edges of the absorber 22 so that the distance between the pair of slits 48a and 48b is widened. At the time of wearing, the absorbent body 22 is compressed in the width direction, so that at least a part of the gap between the slits 48a and 48b constituting the pair of slits 48 is closed, and the absorbent body 22 is reduced. Width at the central portion 44 is configured so as to reduce also.

  Thus, the absorbent article of the present invention utilizes the fact that when the absorbent article is worn, the absorbent body disposed in the crotch portion is compressed in accordance with the width of the wearer's crotch, By closing at least a part of the gap, the width of the absorbent body is reduced, and the formation of wrinkles and wrinkles at the crotch part is suppressed, while the front body side and the back body side fit the wearer's body appropriately. Thus, a good wearing feeling can be obtained.

  For this reason, for example, when the absorbent article of the present invention is a disposable diaper used by an infant or the like having a design such as a character design on its outer surface, the design may be distorted by slack or wrinkles. Can be effectively prevented, and design such as designs is not impaired.

  In addition, since the slack in the crotch portion is suppressed, it is difficult to excessively bulge in the crotch portion, and the absorbent article is easily stored in the clothes, and the appearance of the clothes is improved. For this reason, it is difficult for others to easily recognize that a diaper is worn, and resistance when wearing an absorbent article can be reduced. In particular, since it is difficult for others to recognize the wearing of the absorbent article, it is possible to greatly reduce the resistance of adults to using the absorbent article.

  Furthermore, when the absorbent article of the present invention excretes stool by bending along the slit, the crotch part does not adhere too much compared to the conventional absorbent article using an hourglass-type absorbent body. Thus, it is possible to satisfactorily secure the space to be held and to effectively prevent the leakage of feces.

  In particular, the absorbent article of the present invention is easy to stand up because both side portions of the side edges of the pair of left and right slits of the absorber are bent along the slit. For example, as shown in FIG. 1D and FIG. It becomes easy to form a pocket shape 70 (that is, a concave space in which the vicinity of the crotch portion is deformed into a bowl shape) in which a portion between the pair of left and right slits 48a and 48b is a bottom. Thereby, urine is hold | maintained in the said pocket shape 70 until the excreted urine is absorbed by the absorber 22, and the leak to the exterior can be prevented. Furthermore, since the stool that is difficult to be absorbed by the absorbent body 22 is also accommodated in the space in the pocket shape 70, it is difficult to stain clothes and the like. Here, FIG. 1D and FIG. 1E are schematic views showing a state in which the absorbent body is bent along a pair of left and right slits when one embodiment of the absorbent material of the present invention is mounted. In FIG. 1E, components other than the absorbent body of the absorbent article are discarded, and the absorbent body 22 is folded along the pair of left and right slits 48a and 48b in the crotch portion of the wearer 71 to form a pocket shape. Sectional drawing of the state which formed 70 is shown.

  In addition, the slit which closes at the time of wear can change the degree of the blockage freely according to a wearing state (namely, the tightening condition of an absorptive article). When it adheres too much, the slit is not completely closed (that is, the slit is maintained leaving some gaps), and a good wearing feeling can be obtained. As described above, even when stool is excreted, if a sufficient space for securing the stool is not obtained, a part of the slit closed by the pressure of the excreted stool is opened, and the stool leaks. Can be effectively prevented.

  In this specification, “front body” means a part covering the abdomen (front of the body) of the wearer when a diaper is worn on the wearer, and “crotch part” means when a diaper is worn on the wearer. In addition, the portion covering the inseam of the wearer, “rear body” means a portion covering the back side (back of the body) of the wearer when the diaper is worn on the wearer.

  Further, the “front end portion of the absorbent body” means that when the absorbent article (pants-type disposable diaper in FIG. 1B) is worn on the wearer, from the end located on the wearer's ventral side (front of the body), This refers to the range of up to 30% of the length in the longitudinal direction of the absorbent body. The “rear end of the absorbent body” refers to the back side of the wearer (back of the body) when the absorbent article is worn on the wearer. ) Is a range of up to 30% of the length in the longitudinal direction of the absorber, and “the central portion of the absorber” refers to the front end portion and the rear end portion of the absorber described above. The range between.

  Further, in the present specification, the “longitudinal direction of the absorbent body” refers to a direction from the abdominal side to the back side when the absorbent article is attached to the wearer. In addition, the “width direction of the absorber” refers to a direction orthogonal to the longitudinal direction of the absorber described above on the surface of the absorber.

  In addition, the “pants-type disposable diaper” is a pants-type configuration in which one waist opening and a pair of leg openings are formed by joining corresponding side edges of the front and back bodies together. Means disposable disposable diapers.

  Among them, as shown in FIGS. 1A to 1C, an absorbent body 22 is included between the top sheet 18 and the back sheet 20, and is formed into a pad shape, an opening portion around one waist, and a pair. The pouch-type exterior sheet 16 having openings around the legs is provided, and the form in which the absorbent main body 14 is disposed and fixed inside the exterior sheet 16 may be referred to as a “two-piece type”. On the other hand, a top sheet, a back sheet, and an absorber are provided, but an absorber that is responsible for absorption and holding functions is interposed (built in) between the top sheet and the back sheet, and / or a top sheet that assumes a mounting function. A form integrally formed with the back seat may be referred to as “one-piece type”. In addition, the absorbent article of this invention is applicable to any type of 1 piece type and 2 piece type.

  Further, the “tape-type disposable diaper” includes an absorbent body 22, a top sheet 18, and a back sheet 20, as in the absorbent article 1 </ b> B shown in FIG. 2, and the left and right side edges 6 a of the back body 6. , 6b, and means a disposable diaper further provided with a fastening tape 11 for fixing the front body 2 and the back body 6. Here, FIG. 2 is a plan view showing a tape-type disposable diaper as another embodiment of the absorbent article of the present invention, and is a view showing a state in which the tape-type disposable diaper is developed and viewed from the top sheet side. is there.

  The “urine pad” is also referred to as an inner pad or an auxiliary pad, and means an absorbent pad mainly for urine absorption, and is placed on the surface of the top sheet of the disposable diaper and used together with the disposable diaper. Alternatively, it is placed on the inner surface of the undergarment and used alone. That is, the urine pad as an absorbent article includes, for example, an absorbent body 22, a top sheet 18 disposed so as to cover the surface of the absorbent body 22, and an absorbent body as in the absorbent article 1 </ b> C illustrated in FIG. 3. The back sheet 20 is disposed so as to cover the back surface of the wearer 22 but is generally configured in a small pad shape in which the side around the waist of the wearer is not restrained. Here, FIG. 3 is a plan view showing a urine pad as still another embodiment of the absorbent article of the present invention.

  An absorbent article of the present invention includes an absorbent body, a top sheet disposed so as to cover the surface of the absorbent body, and a back sheet disposed so as to cover the back surface of the absorbent body. If present, a pants-type disposable diaper (absorbent article 1A) as shown in FIGS. 1A to 1C, a tape-type disposable diaper (absorbent article 1B) as shown in FIG. 2, and a urine pad as shown in FIG. It can be applied to (absorbent article 1C) and the like. Although not shown, the present invention can also be applied to a sanitary napkin that absorbs menstrual blood, a cage sheet that absorbs cage, and the like.

  Hereinafter, as an absorbent article of the present invention, each constituent element will be described in more detail using the pants-type disposable diaper shown in FIGS. 1A to 1C as an example.

[1-1] Absorber:
The “absorber” is a member for absorbing and holding the wearer's urine and the like, and is made of an absorbent material. Usually, an absorber is inserted | pinched between a top sheet and a back sheet, and is used in the state integrated with both sheets.

  The absorbent body used in the absorbent article of the present invention is formed from the front end portion, the central portion, and the rear end portion in the longitudinal direction, and the absorbent body extends from at least the central portion to a part of the front end portion. , At least a pair of left and right slits penetrating from the front surface side to the back surface side of the absorber are formed, and the pair of slits are spaced apart from each other toward the respective side edges of the absorber at the front end portion. Is bent or curved so as to be wide. For example, in the absorber 22 shown in FIG. 1B, a pair of slits 48 a and 48 b extends from the central portion 44 to a part of the front end portion 42 in the vicinity of the boundary between the central portion 44 and the front end portion 42. The example in the case of being bent toward the side edge side is shown.

  As described above, when the pair of slits are formed to be bent or curved so that the distance between the slits is widened, when the gap between the slits is at least partially closed, the shape around the legs is formed. Accordingly, the width of the absorbent body is appropriately reduced, and a good wearing feeling can be realized. Furthermore, since it fits naturally with respect to a change in shape from the wearer's crotch to the abdomen, the wearer does not feel uncomfortable and the appearance is improved.

  Note that “the slit is bent and formed” means that the slit formed in a straight line has a refraction point that bends toward the side edge of the absorber with respect to the traveling direction. `` The slit is curved and formed '' means that at least a part of the slit turns in the direction toward the side edge of the absorbent body in a state where the slit has a smooth curvature. It means that it is formed.

  The pair of slits is for reducing the width of the absorbent body disposed in the crotch part (more specifically, from the crotch part to the front body side) when the absorbent article is worn. It is configured such that at least a part of the slit is closed when the sex goods are worn.

  For example, an hourglass-type absorber used in a conventional absorbent article has a narrow width at the center portion in advance, but such an hourglass-type absorber can be applied from the crotch portion to the front body or the lower body. A feeling of twitching (feeling of tension) is given to the line up to, or the absorbent article is too close to the wearer, and on the contrary, the appearance at the time of wearing becomes worse. Moreover, since an absorbent article will adhere too much to a wearer, the space hold | maintained when excretion of feces cannot be ensured and it is easy to produce a leak.

  The pair of slits formed in the absorbent body constituting the absorbent article of the present invention has a central axis (i.e., in the width direction of the absorbent body) from the edge on the front end side to the edge on the rear end side. A pair of left and right are preferably formed with a central axis passing through the center as a boundary. By comprising in this way, since the slack of the right and left of the crotch part of an absorbent article is suppressed with respect to the center line of a wearer's body (for example, the center line which passes a navel and divides a body into right and left) A good wearing feeling can be obtained, and the appearance when worn is also good.

  Furthermore, it is preferable that such a pair of slits are formed symmetrically with respect to the central axis described above. Thereby, even if it is a case where the design excellent in design property, such as a character design, is provided to the outer side of the absorbent article, the distortion of the said design can be prevented effectively.

  For example, according to the wearer's condition, a pair of slits may be formed asymmetrically with the central axis as a boundary. That is, the pair of slits may be formed such that the distance from the above-described central axis is different between the left and right slits. By comprising in this way, even when the posture at the time of use of an absorptive article used in a lateral position is biased, an appropriate fit is given, and excrement leakage from only one direction is prevented. be able to.

  1B shows an example in which the slits 48a and 48b of the absorber 22 are formed from the central portion 44 to a part of the front end portion 42. For example, as shown in FIG. The slits 48 a and 48 b may be formed from a part of the rear end part 46 of the absorber 22 to a part of the front end part 42 via the central part 44. By constituting in this way, not only the slack from the crotch part to the front body side but also the slack from the crotch part to the back body side can be effectively prevented. As shown in FIG. 1B, if the pair of slits 48a and 48b are formed at least from the central portion 44 of the absorber 22 to a part of the front end portion 42, the periphery of the crotch portion (that is, from the front half side to the rear half). As shown in FIG. 4, the pair of slits 48 a and 48 b is formed from a part of the rear end portion 46 of the absorber 22 through the central portion 44, as shown in FIG. 4. If it is formed over a part of the part 42, it is possible to positively prevent the slack on the lower body side. Here, FIG. 4 is a plan view of an absorbent body used in another embodiment of the absorbent article of the present invention.

  Although there is no restriction | limiting in particular about the length of a pair of slit, It is preferable that it forms over the range of 10-70% of the center part whole area in the longitudinal direction of an absorber, and the front-end part in the longitudinal direction of an absorber. . If it is less than 10% of the front end portion in the longitudinal direction of the absorber, the slack from the crotch part to the front body side may not be sufficiently suppressed due to the blockage of the slit, whereas, in the longitudinal direction of the absorber If it is more than 70% of the front end, excrement flowing through the slit may flow excessively to the end.

  In the absorbent article of the present invention, for example, as shown in FIG. 5, each of the slits 48 a and 48 b constituting the pair of slits 48 is at least a part of the gap between the slits 48 a and 48 b in the central portion 44. It is preferable that the width is formed. The slack and wrinkles of the crotch portion of the absorbent body 22 are not uniform over the entire crotch portion. For example, the slack gradually sags from the root side of the wearer's inner thigh toward the front body side or the back body side. There is a tendency to be relaxed, and the width of the slit gap may be changed in accordance with the degree of looseness or wrinkles in the crotch part. FIG. 5 shows an example in which the gaps between the slits 48a and 48b are formed to be wider near the center of the central portion 44 in the longitudinal direction of the absorber 22. Here, FIG. 5 is a plan view of an absorbent body used in still another embodiment of the absorbent article of the present invention.

  The width of the slit is not particularly limited as long as the slack and wrinkles formed in the crotch part can be relaxed by closing at least a part of the slit, and the application target of the absorbent article (for example, disposable diaper) And urine pad), the size of the absorbent article (for example, for infants and adults), and the like. For example, the total width of each pair of slits is preferably a width corresponding to 0.2 to 0.6 times the length in the width direction of the absorber. By comprising in this way, the slack and wrinkle formed in a crotch part can be effectively suppressed in the state which maintained the absorptivity of the absorber favorably. In addition, when the total width of the pair of slits is less than 0.2 times the length in the width direction of the absorber, the slits may be too narrow to sufficiently suppress slack and wrinkles. On the other hand, if the total width of the pair of slits is more than 0.6 times the length of the absorbent body in the width direction, the slits are too wide to be worn properly (that is, loose or wrinkled). In a state where there is no slit, a large gap between the slits may remain in the crotch portion.

  For example, as shown in FIG. 5, the slits 48 a and 48 b constituting the pair of slits 48 are from the side edges of the slits 48 a and 48 b to the side edges of the absorber 22 in the central portion 44 of the absorber 22. The total sum of the distances Wc1 and Wc3 is preferably smaller than twice the distance Wc2 between the pair of slits 48a and 48b (Wc1 + Wc3 ≦ 2 × Wc2). With this configuration, when the side edge of the absorber is bent along the slit to form a pocket shape, pressure is applied to the absorber from both legs against the crotch, and the side edge portion of the absorber Even when the squeezed is crushed, it can be prevented that the pocket-shaped frontage becomes small and it becomes difficult for the excrement to enter, and the excrement can be held well.

  Note that the distances Wc1 and Wc3 from the side edges of the slits 48a and 48b to the side edges of the absorber 22 are smaller than the distance Wc2 between the pair of slits 48a and 48b (Wc1 ≦ Wc2, Wc3). ≦ Wc2) is also preferable.

  In the present invention, the pair of slits 48a and 48b are bent at the front end portion 42 toward the respective side edges of the absorber 22 so that the distance between the pair of slits 48a and 48b is widened. One of the characteristics is that the slits 48 a and 48 b constituting the pair of slits 48 are formed from the side edges of the slits 48 a and 48 b at the front end portion 42 of the absorber 22. When the distances to the side edges of the absorber 22 are the distances Wf1 and Wf3 and the distance between the pair of slits 48a and 48b is the distance Wf2, the relationship is at least Wc2 <Wf2.

  Further, in the absorbent article of the present invention, the width of the portion where the slit is not formed in the central portion 44 of the absorber 22 (that is, Wc1 + Wc2 + Wc3) is the slit at the front end portion 42 of the absorber 22. It is preferable that the width (Wc1 + Wf2 + Wf3) is smaller than the width of the non-existing portion (that is, Wf1 + Wf2 + Wf3) (Wc1 + Wc2 + Wc3 <Wf1 + Wf2 + Wf3). By comprising in this way, moderate bulge can be formed in the front-body side and the back-body side, suppressing the formation of the slack and the heel in the crotch part, and a favorable wearing feeling can be obtained.

  In FIG. 5, the width of the gap between the slits 48a and 48b is formed wide at least at a part of the central portion 44, so that the width of the portion of the central portion 44 of the absorber 22 where no slit is formed is larger. The width of the portion of the front end portion 42 of the absorber 22 where the slit is not formed is reduced. For example, as shown in FIG. For example, the above relationship may be satisfied by using an hourglass type. 6, as in the absorber shown in FIG. 5, at least a part of the central portion 44 is configured such that the width of the gap between the slits 48 a and 48 b is widened, but the central portion 44 is constricted. The width of the gap between the slits 48 a and 48 b may be constant from the central portion 44 to the front end portion 42. Here, FIG. 6 is a plan view of an absorbent body used in still another embodiment of the absorbent article of the present invention.

  Moreover, until now, in the pair of slits formed in the absorber, the positional relationship between the central portion 44 and the front end portion 42 has been described. For example, as shown in FIGS. When 48 a and 48 b are formed from a part of the rear end part 46 of the absorber 22 to a part of the front end part 42 via the central part 44, the central part 44 and the rear end part 46 are formed. As the positional relationship, a preferable form of the positional relationship between the central portion 44 and the front end portion 42 can be applied. For example, as shown in FIG. 4 to FIG. 6, the pair of slits 48 a and 48 b is spaced apart from the pair of slits 48 a and 48 b toward the respective side edges of the absorber 22 at the rear end portion 46. Thus, it is preferable that it is bent or curved.

  Moreover, in the absorbent article of the present invention, each slit constituting the pair of slits is preferably such that the shape of the end portion in the cross section parallel to the absorber surface is formed in a curved shape. For example, as shown in FIGS. 7 to 9, the shape of the end portions of the slits 48 a and 48 b constituting the pair of slits 48 is preferably a rounded R shape formed in a curved shape. For example, if the shape of the end portions of a pair of slits is square, when the end portions of the slits come into contact with the wearer when worn, it may cause a sense of incongruity, but the end portions of the slits are rounded. Therefore, a good wearing feeling can be obtained. Moreover, the appearance of the absorbent article becomes soft and can be used with peace of mind when the wearer or caregiver uses the absorbent article. In particular, it is possible to give a psychological sense of security to parents who are raising children. Here, each of FIGS. 7-9 is a top view of the absorber used for further another embodiment of the absorbent article of this invention.

  Further, in the absorbent body used in the absorbent article of the present invention, one separation slit shorter than the pair of slits is provided on the end side of the absorbent body further than the position where the pair of slits are formed. One or more may be further formed. For example, the absorber 22 shown in FIG. 10 has a separation slit 49 shorter in length than the pair of slits 48a and 48b on the front end portion 42 side of the absorber 22 further than the position where the pair of slits 48a and 48b are formed. However, the absorbent body 22 shown in FIG. 11 has a front end portion 42 side and a rear end portion further than the positions where the pair of slits 48a and 48b are formed. An example in which one separation slit 49 shorter than the pair of slits 48a and 48b is formed on each of the 46 sides. Here, each of FIG.10 and FIG.11 is a top view of the absorber used for further another embodiment of the absorbent article of this invention.

  By forming such a separation slit on the tip side (terminal side) of the pair of slits, the fit when the absorbent article is worn can be further improved. Moreover, when an absorbent article is a disposable diaper, it becomes easy to fit to the swelling of an abdominal circumference, and can prevent the urine leakage from an abdominal circumference effectively. The separation slit may be formed on the front end portion 42 side of the absorber 22 like the absorber 22 shown in FIG. 10, or the front end portion of the absorber 22 like the absorber 22 shown in FIG. You may form in both 42 side and the rear-end part 46 side. Moreover, although illustration is abbreviate | omitted, you may form only in the rear-end part side of an absorber, for example.

  The above-described separation slits, for example, extend toward the respective side edges of the absorber toward the end of the absorber so as to be parallel to the tip portions of the pair of slits formed by bending or bending. It is preferable to be formed in a simple shape.

  Moreover, the absorbent article of the present invention may further include, for example, an elastic material that is disposed in an expanded state along the width direction of the absorbent body at least in the central portion of the absorbent body. That is, the absorbent article of the present invention is configured to reduce the width at least at the center of the absorbent body by utilizing the fact that it is compressed in accordance with the width of the wearer's crotch when worn. However, by further providing the above-described elastic material, the elastic material can be used to assist in compressing the absorbent body in the width direction, and the absorbent article can be more easily transformed into an appropriate shape. Is possible. For example, FIG. 12 shows an example in which the stretchable material 40 is arranged in the stretched state along the width direction of the absorber 22 at the central portion 44 of the absorber 22. Here, FIG. 12 is a plan view of an absorbent body used in still another embodiment of the absorbent article of the present invention.

  Such an elastic material is preferably disposed on the back sheet side surface of the absorbent body (more preferably, between the back sheet and the absorbent body). By comprising in this way, when an absorptive article is worn, since an elastic material does not contact a wearer, a good wearing feeling can be obtained.

  As this stretchable material, for example, a stretchable material configured in the same manner as a stretchable material that is disposed around the legs or the waist around a conventionally known disposable diaper can be used. Specific examples include thread rubber made of an elastic material such as natural rubber and synthetic rubber (urethane rubber, etc.), flat rubber, stretchable net, stretchable film, stretchable foam (urethane foam, etc.), and the like. The stretchable material that assists the compression of the slit can determine the constituent material, the stretch rate of the material, the stretched state at the time of fixation, etc. in consideration of the shape of the slit and the appropriate wearing state.

  Examples of the material constituting the absorber include fluff pulp, superabsorbent polymer (SAP), hydrophilic sheet and the like. As the fluff pulp, it is preferable to use wood pulp or non-wood pulp defibrated into cotton, and as SAP, it is preferable to use sodium polyacrylate. And as a hydrophilic sheet | seat, it is preferable to use the tissue, the absorbent paper, and the nonwoven fabric which performed the hydrophilic treatment.

  As the absorber, it is preferable to use one or two or more absorbent materials formed into a single-layer or multi-layer mat. Especially, what combined 10-500 mass parts SAP with respect to 100 mass parts of fluff pulp is preferable. At this time, the SAP may be mixed in the fluff pulp mat or used in a layered manner between the fluff pulp mats. An absorbent article 1A shown in FIG. 1B is an example in which tissue is used as a hydrophilic sheet and the absorbent body 22 is encapsulated by a top sheet 18 and a back sheet 2.

  The shape of the absorber is not particularly limited as long as it has at least a pair of slits as described above, but is preferably in the shape of, for example, a rectangle or an hourglass.

[1-2] Top sheet:
A top sheet is a sheet | seat which is arrange | positioned so that the surface of an absorber may be coat | covered, and consists of a liquid-permeable material, and is a sheet | seat located in a wearer's skin side at the time of wear of an absorbent article.

  The top sheet has at least a part (all or one part) of the top sheet so that the absorbent body disposed on the back side absorbs excrement such as urine of the wearer (hereinafter sometimes simply referred to as “urine”). Part) is made of a liquid-permeable material. Usually, at least in the vicinity of the surface of the absorbent body, it is made of a liquid-permeable material that can transmit excrement such as urine and body fluid of the wearer. In addition, as long as at least one part is comprised with the liquid-permeable material, the whole top sheet does not necessarily need to be comprised with the liquid-permeable material.

  Examples of the liquid permeable material constituting the top sheet include a woven fabric, a nonwoven fabric, and a porous film. Among these, it is preferable to use a non-woven fabric made of a thermoplastic resin such as polypropylene, polyethylene, polyester, nylon (registered trademark) or the like and subjected to a hydrophilic treatment. There is no restriction | limiting in particular also about the kind of nonwoven fabric, The conventionally well-known nonwoven fabric manufactured by various manufacturing methods, such as air through (card hot air), card | curd embossing, and a spun bond, can be used suitably.

  The top sheet may be composed of a single sheet material, but may be composed of a plurality of sheet materials. For example, the sheet | seat arrange | positioned in the part which covers an absorber and parts other than the above (for example, in the case of an absorbent article disposable diaper, the part which comprises the side flap of a diaper) have the structure which varied. Many top sheets are also used.

  The top sheet is arranged so as to cover the surface of the absorber. However, in the portion where the slit of the absorber is formed, the top sheet is arranged so as to cover the inner surface of the slit. It is preferable to join with the back sheet | seat arrange | positioned so that the back surface side of an absorber may coat | cover the back surface side of an absorber. By comprising in this way, the shape of the slit of an absorber can be maintained favorable and the shape-loss of an absorber can be prevented effectively.

[1-3] Backsheet:
The back sheet is a sheet made of a liquid-impermeable material disposed so as to cover the back surface of the absorbent body, and is a sheet positioned on the wearer's clothing side when the absorbent article is worn.

  Thus, in order to prevent the excrement of the wearer from leaking out of the absorbent article, the back sheet is made of a liquid-impermeable material as described above.

  There is no restriction | limiting in particular about the arrangement position of a back seat | sheet. From the viewpoint of preventing leakage of urine absorbed by the absorber, it is preferable that a back sheet is disposed at least in a portion where the absorber exists.

  Examples of the liquid-impermeable material constituting the backsheet include a liquid-impermeable film made of a resin such as polyethylene. Among these, a microporous polyethylene film is preferably used. This microporous polyethylene film has a large number of fine pores of 0.1 to several μm, and is liquid impervious but has moisture permeability, so that the inside of the diaper can be prevented from being steamed There is.

  A cover sheet may be bonded to the outer surface side of the back sheet. This cover sheet is used to reinforce the back sheet and improve the feel (tactile feeling) of the back sheet.

  Examples of the material constituting the cover sheet include woven fabric and non-woven fabric. Especially, it is preferable to use the dry nonwoven fabric and wet nonwoven fabric which consist of thermoplastic resins, such as polyethylene, a polypropylene, and polyester.

[1-4] Solid gathering:
The absorbent article of the present invention may be made of a water-repellent sheet and further include at least a pair of three-dimensional gathers arranged on both sides of the absorbent body.

  The three-dimensional gather is a member for preventing side leakage of urine or the like excreted by the wearer, and is a leak-proof wall configured to be able to stand up three-dimensionally. By forming such a three-dimensional gather, the three-dimensional gather becomes a breakwater and effectively leaks around the legs of the absorbent article (for example, openings around the legs), side edges, etc. (so-called “lateral leakage”). Can be prevented.

  The structure of a three-dimensional gather can employ | adopt the structure used for the conventional disposable diaper and other absorbent articles. For example, like the three-dimensional gather 26 (26a, 26b) of the absorbent article 1D shown in FIGS. 13A and 13B, an elastic material (three-dimensional gather elastic material 36) is sandwiched between the layers of the water-repellent sheet 32 (32a, 32b). It is possible to suitably use those that are fixed and have gathers (claws) formed by the contraction force of the three-dimensional gather expansion / contraction material 36 (36a, 36b). In this example, the three-dimensional gather stretchable material 36 is sandwiched and fixed to the folded portion of the water-repellent sheet. Here, FIG. 13A is a schematic plan view showing a state in which a pants-type disposable diaper as another embodiment of the absorbent article of the present invention is developed and viewed from the top sheet side, and FIG. It is a schematic sectional drawing which shows the BB 'cross section of an underpants type disposable diaper.

  In addition, by arranging such a three-dimensional gather, both side portions on the side edge side of the pair of left and right slits of the absorber are easily raised. Thereby, as shown in FIG. 1E, it becomes easy to form a pocket shape (that is, a concave space in which the vicinity of the crotch portion is deformed into a bowl shape) where the portion between the pair of left and right slits of the absorber is the bottom.

  The three-dimensional gather may be separately provided with a water-repellent sheet for three-dimensional gather as described above, or may be formed by a part of the sheet material constituting the absorbent article. The water-repellent sheet may be a nonwoven fabric produced by a production method such as card embossing or spunbonding, but a nonwoven fabric sheet such as SMS or SMMS having a high waterproof property is more preferable.

[1-5] Fastening tape:
The absorbent article of this invention may be provided with the fastening tape for fixing the front body and the back body arrange | positioned so that it may extend from the left and right side edges of a back body. That is, the absorbent article of the present invention includes so-called tape-type disposable diapers.

  The fastening member of the fastening tape may be an adhesive fastener that is fixed by an adhesive, but a mechanical fastener (planar fastener) that is fixed by mechanical coupling is preferably used. In addition to high fastening force, the mechanical fastener has an advantage that the fastening force does not decrease even when the detachment is performed a plurality of times.

  For example, the absorbent article 1B shown in FIG. 2 is an example in which a mechanical fastener 64 is used as a fastening member. A hook material 64 a is attached near the front end of the fastening tape 11, while a front patch 13 made of a loop material 64 b is attached to the front body 2, and the fastening tape 11 is attached to the front patch 13. It is comprised so that it can stop.

[1-6] Various elastic materials:
When the absorbent article of the present invention is a disposable diaper, it is preferable to dispose a leg elastic member and a waist elastic material.

  The leg circumference elastic material is an elastic material arranged along the leg circumference opening. By arranging the leg-stretchable material, a gather (leg gather) rich in stretchability can be formed in the leg-surrounding opening. Therefore, it is difficult to form a gap around the leg, and urine leakage from the opening around the leg can be effectively prevented. Moreover, by arranging such a leg-surrounding elastic member, both side portions on the side edge side of the pair of left and right slits of the absorber are easily raised. Thereby, as shown in FIG. 1E, a pocket shape (that is, a concave space in which the vicinity of the crotch portion is deformed into a bowl shape) is formed, where the portion between the pair of left and right slits of the absorber is the bottom. It becomes easy. Furthermore, when this leg stretchable material is disposed, the leg stretchable material contracts on both sides of the absorbent body even when the diaper is changed. For this reason, urine and body fluid accumulate in the concave portion, and the diaper can be easily replaced without spilling urine and body fluid.

  For example, the absorbent article 1A shown in FIG. 1A to FIG. 1C is a pants-type disposable diaper, and is an example in which leg gathers are arranged in a curved manner along the curve of the leg opening of the diaper to form a leg gather. It is. On the other hand, the absorbent article 1B shown in FIG. 2 is a tape-type disposable diaper, and is an example in which leg gathers are formed by arranging two leg-stretchable elastic members 50 linearly along the longitudinal direction of the diaper. The leg-surrounding elastic member 50 is made of thread rubber or flat rubber.

  In addition, it is preferable that the leg periphery elastic material is formed in the part outside the standing line of the three-dimensional gather 26 like the absorbent article 1B shown in FIG. With such a configuration, it is possible to improve the wearing feeling and wearing feeling of the crotch part while ensuring a sufficient leakage preventing effect of the three-dimensional gather.

  The waist elastic material is an elastic material arranged along the waist opening. By arranging the elastic material around the waist, a gather (waist gather) rich in elasticity can be formed in the waist opening. This waist gather makes it difficult for gaps to be formed around the waist, preventing urine leakage from around the waist, and improving the fit of the diaper to the wearer, thereby preventing the diaper from falling down.

  For example, the absorbent article 1A shown in FIGS. 1A to 1C is an example in which a plurality of waist elastic members 52 are arranged along the opening end of the diaper waist opening.

  On the other hand, the absorbent article 1 </ b> B shown in FIG. 2 is an example in which a belt-shaped waist elastic material 52 is disposed along the edge of the back body 6 of the diaper. The belt-like waist elastic member 52 is made of a stretchable foam such as urethane foam. In the illustrated example, the waist elastic material 52 is disposed only on the back body (back side), but the waist elastic material may be disposed on the front body (abdominal side).

  An abdominal circumference elastic material is an elastic material arrange | positioned in the part (namely, part equivalent to a wearer's abdominal circumference) between a waist circumference opening part and a leg circumference opening part. By arranging the elastic material around the abdomen, it is possible to form a highly elastic tammy gather around the abdomen of the wearer. This Tammy Gather, together with West Gather, can make the diaper fit and anti-slip effect even better.

  The absorbent article 1A shown in FIGS. 1A to 1C surrounds the circumference of the wearer's abdomen in a portion between the waist circumference opening and the leg circumference opening (that is, a portion corresponding to the circumference of the wearer's abdomen). This is an example in which a plurality of belly stretchable materials 54 are arranged.

  For these stretchable materials, after considering the degree of shrinkage of gathers, etc., the constituent material, the elongation rate of the material, the stretched state at the time of fixing, etc. may be determined.

  As an elastic material, the elastic material which has been used with the conventional disposable diaper can be used conveniently. Specific examples include elastic rubber, elastic film, elastic foam (urethane foam, etc.), etc., as well as thread rubber and flat rubber made of elastic materials such as natural rubber and synthetic rubber (urethane rubber, etc.). .

  The stretchable material is preferably fixed in the stretched state in order to exert a sufficient stretch force. For example, when the elastic material is natural rubber or synthetic rubber, it is preferably fixed in a stretched state of 120 to 400%, and more preferably fixed in a stretched state of 200 to 300%. By fixing in the extended state in such a range, it is possible to apply a sufficient expansion / contraction force without applying an excessive tightening force to the wearer.

  The stretchable material as described above is fixed to other constituent members of the diaper by an adhesive or other means. The fixing method may be, for example, adhesion using a hot melt adhesive or other highly fluid adhesive, or may be welding by heat such as heat sealing or ultrasonic waves.

[2] Manufacturing method of absorbent article:
Next, the manufacturing method of the absorbent article of the present invention will be specifically described by taking as an example a method for manufacturing the absorbent main body used in the pants-type disposable diaper shown in FIGS. 1A to 1C.

  As described above, the absorbent body used in the absorbent article of the present invention is formed with a slit having a predetermined shape penetrating from the front surface side to the back surface side of the absorbent body. It can be formed using a forming drum having a protrusion corresponding to the shape of the slit. That is, such a forming drum is formed with a recess corresponding to the inverted shape of the absorber, and a material for forming the absorber (for example, fluff pulp) is placed in the recess of the above-described forming drum. Then, the material is deposited in a recess corresponding to the inverted shape of the absorber. In this way, a continuous body of the absorber, in which slits of a predetermined shape are intermittently formed, is formed, and the long absorbent body is disposed at a predetermined interval, that is, from the center portion of the absorber to the front end portion. It is possible to produce the absorbent body used in the absorbent article of the present invention by cutting so that at least a pair of left and right slits penetrating from the front surface side to the back surface side of the absorbent body is formed over a part. it can.

  Moreover, the absorber in which the slit is formed can be formed, for example, by manufacturing a sheet-like absorber and then punching a portion corresponding to the shape of the slit by punching.

  Next, a long sheet material (back sheet material) as a material for the back sheet is prepared, and the absorber on which the above-described slit is formed is disposed on the surface, and the top sheet material is further formed thereon. A long sheet material (top sheet material) is arranged, and each component is joined by a hot-melt adhesive applied to one or both surfaces facing each other. Thus, the absorptive main body continuum used as the intermediate of the absorptive main body which constitutes an absorptive article can be obtained. In addition, for example, as the top sheet material, in addition to the top sheet material corresponding to the center sheet, a sheet material for forming a three-dimensional gather is separately used. By providing a folded portion on the sheet material, the absorbent main body You may form a three-dimensional gather in a continuous body.

  The absorbent main body used in the absorbent article of the present invention can be produced by cutting the absorbent main body continuum thus obtained at predetermined intervals.

  In the manufacturing method described above, the method for manufacturing the absorbent main body has been described as an example. By applying a method of forming an absorptive slit and forming an absorbent, for example, a one-piece type pants-type disposable diaper or a tape-type disposable diaper can be manufactured, and an absorbent article such as a urine pad is also available. It is possible to manufacture.

  The absorbent article of the present invention is suitable as a diaper for infants, adults such as elderly people and persons with disabilities who need care, sanitary napkins for absorbing menstrual blood, and sheets for cages for absorbing cages. Can be used for

1A, 1B, 1C, 1D: Absorbent article, 2: Front body, 2a, 2b: Side edge, 4: Crotch part, 6: Rear body, 6a, 6b: Side edge, 8: Joint part, 10: Around the waist Opening, 11: Fastening tape, 12, 12a, 12b: Opening around leg, 13: Front patch, 14: Absorbent body, 16: Exterior member, 18: Top sheet, 20: Back sheet, 22: Absorber , 26, 26a, 26b: solid gather, 32, 32a, 32b: water repellent sheet, 36, 36a, 36b: solid gather stretchable material, 40: stretchable material, 42: front end portion, 44: center portion, 46: rear end Portions 46, 48, 48a, 48b: slit, 49: separation slit, 50: elastic material around leg, 52: elastic material around waist, 54: elastic material around waist, 64: mechanical fastener, 64a: hook material, 64b: loop Material, 0: pocket shape, 71: wearer, 100: pants-type disposable diapers.

Claims (12)

An absorber, at least partly made of a liquid-permeable material, a top sheet arranged to cover the surface of the absorber, and a liquid-impermeable material so as to cover the back surface of the absorber An absorbent article comprising a backsheet disposed,
The absorbent body is formed from the front end portion, the center portion, and the rear end portion in the longitudinal direction,
The absorber is formed with at least a pair of left and right slits penetrating from the front side to the back side of the absorber from the center to a part of the front end,
The pair of slits are bent or curved at the front end portion toward the respective side edges of the absorber so that the distance between the pair of slits is widened.
At the time of wearing, the absorber is compressed in the width direction so that at least a part of the gap between the slits constituting the pair of slits is closed, and the width of at least the central portion of the absorber is reduced. Absorbent article composed of   2. The absorption according to claim 1, wherein the pair of slits are formed as a pair on the left and right sides with a central axis from the edge on the front end portion side to the edge on the rear end portion side of the absorber. Sex goods.   The absorbent article according to claim 2, wherein the pair of slits are formed symmetrically with respect to the central axis.   The absorbent article according to claim 2, wherein the pair of slits are formed such that a distance from the central axis differs between the left and right slits.   The pair of slits are formed from a part of the rear end part of the absorber to a part of the front end part via the central part. The absorbent article as described.   The pair of slits are formed to be bent or curved at the rear end portion so as to increase the distance between the pair of slits toward the side edges of the absorber. Item 6. An absorbent article according to Item 5.   Each slit constituting the pair of slits is formed so that a width of a gap between the slits is widened at least in a part of the central portion. Absorbent article.   The absorptivity according to any one of claims 1 to 7, wherein each of the slits constituting the pair of slits is formed such that a shape of a terminal portion in a cross section parallel to the absorber surface is curved. Goods.   One or more separation slits each having a length shorter than that of the pair of slits are further formed in the absorber on the end side of the absorber further than the position where the pair of slits are formed. The absorbent article as described in any one of Claims 1-8.   The absorbent article as described in any one of Claims 1-9 further equipped with the elastic material arrange | positioned in the expansion | extension state along the width direction of the said absorber at least in the said center part of the said absorber.   The absorptive article according to any one of claims 1 to 10 provided with at least a pair of solid gathers on both sides of said absorber.   The absorptive article according to any one of claims 1 to 10 provided with at least a pair of leg circumference elastic materials on both sides of said absorber.

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