JP4955529B2 - Disposable diapers - Google Patents

Description

  The present invention relates to a disposable diaper provided with an absorbent body, a top sheet, and a back sheet. Specifically, the present invention relates to a disposable diaper in which soft stool or watery stool is difficult to adhere around the genital area.

  In recent years, as a diaper for infants or the elderly / handicapped, an absorbent body, a top sheet at least partly made of a liquid-permeable material and arranged to cover the upper surface of the absorbent body, and liquid-impermeable Disposable diapers comprising a back sheet made of a functional material and arranged so as to cover the lower surface of the absorber are widely used.

  Such disposable diapers are used by placing the surface of the top sheet in contact with the skin of the wearer, so that the urine excreted by the wearer permeates the top sheet and is absorbed and held by the absorber. In addition, leakage of excrement to the outside of the diaper is prevented by the back sheet having excellent leakage prevention.

  However, the disposable diaper having the above-described configuration is made with the urine absorption / retention in mind, and the absorption / retention of soft stool or watery stool has not been considered much. That is, soft stools and watery stools contain solids and are viscous, and therefore are less permeable to the top sheet than urine. Therefore, before passing through the top sheet and being absorbed by the absorber, there is a problem in that it flows on the surface of the top sheet and diffuses over a wide area and easily contaminates the genital area.

  Therefore, a water absorbent panel (absorbent pad) made of an absorbent core material encapsulated by a water absorbent sheet is disposed in the front body side region on the top sheet (top sheet), and the water absorbent panel is disposed on the water absorbent panel. A disposable diaper has been proposed in which a spacer (stand-up stretchable material) is disposed to stand up (see, for example, Patent Document 1).

  The disposable diaper is separated from the surface sheet by the contraction of the spacer so that the water absorbent panel forms an arc. Therefore, the surface sheet on which soft stool or watery stool flows and diffuses through the water absorbent panel in direct contact with the genitals. Can be separated from Therefore, it is said that it is difficult for soft stool or watery stool to adhere to the genitals, and the situation where the genitals are soiled can be prevented.

JP 2005-334537 A

  However, the disposable diaper is not necessarily capable of separating the water-absorbing panel from the surface sheet, and there is a risk that soft stool or watery stool adheres to the genitals and the genitals are soiled. That is, it is still inadequate in terms of the effect of making it difficult to attach soft stool or watery stool around the genital area and preventing the situation around the genital area from being contaminated, and there remains a problem to be solved.

  The present invention has been made to solve the problems of the prior art, and is a disposable diaper that makes it difficult to attach soft stool or watery stool around the genital area and prevents the situation around the genital area from being contaminated. Is to provide.

  As a result of intensive studies to solve the problems of the prior art, the present inventors have found that the disposable diaper described in Patent Document 1 is a spacer for standing up a water absorbent panel (absorbing pad) (extension material for standing up) ) Is arranged toward the left and right direction of the diaper, the water-absorbing panel cannot be raised sufficiently, and the knowledge that the separation from the top sheet (top sheet) is insufficient is obtained. . And it came to the idea that the said subject was solved by devising the arrangement | positioning method of the elastic material for standing arrange | positioned to an absorption pad, and completed this invention. Specifically, the following disposable diapers are provided by the present invention.

[1] A top formed from each part of the front body, the crotch part, and the back body, the first absorbent body and at least a part made of a liquid-permeable material, and arranged to cover the upper surface of the first absorbent body A sheet, a back sheet made of a liquid-impermeable material, arranged to cover the lower surface of the first absorbent body, and at least a part of a region in front of the feces falling region of the top sheet An absorbent pad, wherein the absorbent pad is made of a second absorbent body and at least partly made of a liquid-permeable material, and is disposed so as to cover the upper surface of the second absorbent body. A sheet, a lower covering sheet disposed so as to cover the lower surface of the second absorbent body, and a stretchable material for standing up to three-dimensionally stand the absorption pad, and the stretchable material for standing up, Arranged along the front-rear direction of the diaper The absorbent pad is joined to the surface of the top sheet, and the joint between the absorbent pad and the top sheet has a left edge, a front edge and a right edge of the absorbent pad. It is formed so as to be continuously bonded to the surface of the top sheet, and the rear end edge of the absorbent pad is in a non-bonded state with respect to the surface of the top sheet. The material is a disposable diaper whose rear end protrudes rearward from the rear end of the joint portion formed on the left side edge and the right side edge of the absorbent pad and is disposed up to the rear end of the absorbent pad .

  The disposable diaper of the present invention makes it difficult to attach soft stool or watery stool around the genital area and has a high effect of preventing the situation around the genital area.

  Hereinafter, the best mode for carrying out the disposable diaper of the present invention will be described. However, the present invention broadly encompasses disposable diapers having the invention specific items, and is not limited to the following embodiments.

  The "front body" is the part that covers the abdomen (front of the body) of the wearer when a diaper is worn on the wearer, and the "inseam" is the wearer that wears the diaper on the wearer. The part covering the inseam of the wearer, “rear body”, means a part covering the wearer's back side (back of the body) when the wearer wears a diaper.

  Further, in the present specification, the term “crotch region” means a region that exists in a part corresponding to the crotch part of the diaper among the constituent members (for example, a top sheet or the like). The same applies to the “front body region” and the “back body region”. In addition, the “stool dropping area” means an area located immediately below the wearer's anus in a state where a diaper is worn, and usually in a part of the crotch area and / or the back body area of the top sheet. Exists.

[1] Configuration of the characteristic part of the disposable diaper of the present invention:
The disposable diaper 1A shown in FIGS. 1 to 4 includes an absorbent pad 50A disposed so as to cover at least a part of a region in front of the fecal drop region 52A of the top sheet 18, and the absorbent pad 50A is a second one. The absorber 54A, an upper covering sheet 56A that is made of at least a part of a liquid-permeable material and is disposed so as to cover the upper surface of the second absorber 54A, and is disposed so as to cover the lower surface of the second absorber 54A. The lower covering sheet 58A and the standing expansion / contraction material 60A for standing the absorption pad 50A in a three-dimensional manner are provided. The standing stretchable material 60A is arranged along the front-rear direction of the diaper, the absorbent pad 50A is joined to the surface of the topsheet 18, and the joint 62A between the absorbent pad 50A and the topsheet 18 is , Formed at the front edge of the absorbent pad 50A.

  When the extending elastic member 60A is arranged along the front-rear direction of the diaper, a force contracting in the front-rear direction of the diaper acts on the absorbent pad 50A. However, since the second absorbent body 54A having high rigidity inhibits the contraction, the absorbent pad 50A is likely to be deformed to warp in either the upper or lower direction. Further, the front end edge of the absorbent pad 50A is fixed to the top sheet 18 formed integrally with the first absorbent body 22 having high rigidity. Therefore, as shown in FIG. 5, the rear end side of the absorbent pad 50 </ b> A warps upward, and the portion stands up three-dimensionally. In such a configuration, the top sheet 18 and the absorbent pad 50A can be separated greatly, so that the volume of the internal space 64A for storing feces can be increased. Therefore, it is possible to avoid a situation in which the stool that flows under the absorbent pad 50A (that is, the internal space 64A) leaks from the gaps on both side edges of the absorbent pad 50A and stains the wearer's 66 skin.

Thus, since the disposable diaper 1A shown in FIGS. 1 to 4 can largely warp the absorbent pad 50A upward, the absorbent pad 50A can be sufficiently raised. Therefore, it is possible to sufficiently separate the absorbent pad 50A, which is in direct contact with the wearer's genitals, from the top sheet 18 where soft stool or watery stool flows and diffuses.

  In addition, a relatively large internal space 64A can be formed between the absorbent pad 50A and the top sheet 18. Accordingly, even when a large amount of loose stool or watery stool is excreted at a time, the soft stool or watery stool can be allowed to flow into the internal space 64A, and the soft or watery stool is absorbed or captured in the internal space 64A. Is possible. That is, even when soft stool or watery stool spreads widely on the top sheet 18, the soft stool or watery stool can be absorbed and captured in the internal space 64A that is not in contact with the skin or genitals of the wearer. Therefore, it is difficult for soft stool or watery stool to adhere to the genital area, and the situation where the genital area is soiled can be effectively prevented.

[1-1] Absorption pad:
The disposable diaper of this invention is equipped with the absorption pad arrange | positioned so that at least one part of the area | region ahead of the feces fall area | region may be covered among top sheets. With such a configuration, the wearer's genitals come into contact with the upper surface of the absorbent pad, not the surface of the top sheet.

  In general, an “absorbent pad” refers to an absorbent article in which an absorbent body is encapsulated with some sheet material. However, in the disposable diaper of the present invention, the absorbent pad includes a second absorbent body, an upper covering sheet that is at least partially made of a liquid-permeable material and is disposed so as to cover the upper surface of the second absorbent body, It shall mean the member which has the lower coating sheet arrange | positioned so that the lower surface of a 2nd absorber may be coat | covered, and the expansion-contraction material for standing up an absorption pad in three dimensions.

  The 2nd absorber can adopt the same composition as the 1st absorber mentioned below. Although the shape of a 2nd absorber is not specifically limited, A rectangular thing can be used suitably.

  The top cover sheet is a sheet material arranged so as to cover the upper surface of the second absorbent body, and at least a part thereof is made of a liquid permeable material. With such a configuration, excreted urine passes through the top cover sheet and is absorbed by the second absorbent body. The top cover sheet may be in accordance with the structure of the top sheet described later. However, the upper cover sheet is preferably made entirely of a liquid-permeable material from the viewpoint of improving urine permeability.

  The lower covering sheet is a sheet material arranged so as to cover the lower surface of the second absorbent body. Since the undercoating sheet does not need to consider leakage to the outside of the diaper unlike the back sheet, the material of the sheet is not particularly limited. However, it is preferable to use a liquid-permeable material in the same manner as the top cover sheet. By configuring with a liquid-permeable material, urine that could not be absorbed by the second absorber passes through the lower coating sheet and falls onto the top sheet, so that the urine can be absorbed by the second absorber. It becomes.

  The upper cover sheet and the lower cover sheet form a flap portion that extends to the peripheral edge of the second absorbent body. That is, the peripheral edge of the upper covering sheet and the lower covering sheet is sealed with the second absorbent body sandwiched from above and below, and the second absorbent body is interposed between the upper covering sheet and the lower covering sheet. Has been. The peripheral portions of the upper cover sheet and the lower cover sheet are bonded together with, for example, a hot melt adhesive.

  The absorbent pad is disposed so as to cover at least a part (that is, all or part) of the area in front of the feces falling area. Since it is “a region in front of the stool dropping region”, the rear end of the absorbent pad is positioned in front of the wearer's anus, preferably the perineum of the wearer, in a state where the diaper is worn.

  When a pair of three-dimensional gathers are formed, the absorbent pad is arranged so that the right end and the left end thereof are close to the fixed ends of the three-dimensional gathers (sometimes referred to as a lower end edge or an upright line). It is preferable. This makes it possible to make maximum use of the width of the absorbent pad. Thus, by arranging the absorbent pad wide, the contact between the wearer's genitals and soft stool / watery stool can be avoided more reliably, and the opening that leads to the internal space between the absorbent pad and the top sheet A large part can be taken. Usually, the right and left ends of the absorbent pad may be positioned at a position of about 5 mm inside the fixed end of the three-dimensional gather. However, it is preferable to design appropriately so as not to cause interference with the three-dimensional gather during the manufacture of the diaper.

  The absorbent pad is bonded to the surface of the top sheet, and the bonded portion between the absorbent pad and the top sheet is formed at the front edge of the absorbent pad. As described above, by fixing the front end edge of the absorbent pad, the top sheet and the absorbent pad can be separated greatly, and the volume of the internal space for storing feces can be increased. If it is the surface of a top sheet, you may fix so that a fixed end may be located right above a 1st absorber, and you may fix so that a fixed end may be located in the flap part of the 1st absorber periphery. .

The disposable diaper of the present invention is formed with a joint 62A between the absorbent pad 50A and the top sheet 18 at the front edge of the absorbent pad 50A as in the disposable diaper 1A shown in FIGS. The shape is improved. That is, in the disposable diaper of the present invention, as in the disposable diaper 1B shown in FIGS. 6 to 9, the joint portion 62B between the absorbent pad 50B and the top sheet 18 has a left edge, a front edge, and a right edge of the absorbent pad 50B. The edge portion is formed so as to be continuously bonded to the surface of the top sheet 18, and the rear end edge portion of the absorbent pad 50 </ b> B is not bonded to the surface of the top sheet 18 . . For example, if the absorbent pad is formed in a rectangular shape, among the four sides of the absorbent pad, the three sides of the left edge, the front edge and the right edge are continuously formed in a U shape. It joins and fixes so that it may exhibit, It is set as the state which open | released only one side of the rear-end edge part.

  In the configuration as described above, when the elastic material for standing contracts, the absorbent pad stands up three-dimensionally, the absorbent pad is separated from the top sheet, and the rear end side of the absorbent pad is disposed between the top sheet and the absorbent pad. An opening to the internal space is formed. Therefore, it is possible to allow soft stool or watery stool excreted in the stool falling space to flow into the space. On the other hand, since the left side edge, front edge and right side edge of the absorbent pad are continuously sealed by the joint, soft stools and watery stools that have flowed into the internal space are open around the legs and on the front body side. The situation which leaks from the edge part of this can be suppressed effectively.

  The absorbent pad has a standing stretchable material for standing the absorbent pad in three dimensions. In order to stand up the absorbent pad three-dimensionally, it is necessary to fix the standing stretchable material in a stretched state to a part of the absorbent pad.

  The standing stretchable material is preferably disposed between the upper covering sheet and the second absorbent body. By disposing the stretchable material on the upper side of the second absorbent body, it becomes possible to apply a stretch force directly to the second absorbent body, and the second absorbent body is likely to warp upward. However, if too many standing stretchable materials are arranged in the center of the absorbent pad, the wearer may feel a foreign object in the delicate genital part, which may reduce the wearing feeling. Therefore, it is preferable that the standing stretchable material is disposed at both side edges of the absorbent pad.

  The disposable diaper of this invention has the characteristics in the point which arrange | positions the elastic material for standing up of an absorption pad along the front-back direction of a diaper. As already described, when the stretchable material for standing is disposed along the front-rear direction of the diaper, the absorbent pad warps upward, and the absorbent pad is erected in a three-dimensional manner by separating the rear edge from the top sheet.

  On the other hand, when the stretchable material for standing is disposed along the left-right direction of the diaper (for example, the stretchable material for standing is disposed along the rear end of the absorbent pad in the region on the rear side of the second absorbent body in the flap portion. Case), the contraction force acts in the left-right direction (lateral direction) of the absorbent pad. Therefore, the absorbent pad only contracts in the horizontal direction and does not warp upward. That is, it cannot be expected that both the internal space between the absorbent pad and the top sheet and the opening to the internal space are formed large.

  The phrase “along the front-rear direction of the diaper” means that the diaper is generally arranged from the front body side toward the back body side. For example, when the absorbent pad is formed in a rectangular shape, for example, a standing stretchable material may be disposed along the side edge of the absorbent pad.

  The structure of the stretchable material for standing, the fixing method, the stretch rate at the time of fixing, and the like can be the same as those of the three-dimensional gathered stretchable material described later. However, it is preferable that the standing stretchable material is arranged so that the rear end protrudes rearward from the rear end of the joint formed at the left side edge and the right side edge of the absorbent pad.

  In other words, at the left edge and right edge of the absorbent pad, the joining portion is not formed up to the rear end of the absorbent pad, and a non-joined region is formed on the rear end side of the absorbent pad to extend and contract for standing up. About a material, it arrange | positions to the non-joining area | region where the absorption pad and the top sheet are not joined exceeding the junction part of the left side edge part and right side edge part of an absorption pad.

  By doing this, when the stretchable material for standing up contracts, the rear edge of the absorbent pad opens so that it rises, and the opening to the space formed between the absorbent pad and the top sheet is greatly opened. It becomes possible. Therefore, it becomes easy for soft stool or watery stool excreted in the stool falling space to flow into the internal space. Further, if the rear end side of the absorbent pad is not fixed and is set to a free end, the absorbent pad is pressed downward when the wearer's body pressure is applied. Therefore, it can avoid that the edge part (rear end part) of an absorption pad hits a wearer's skin, and irritate | stimulates skin.

In the disposable diaper of the present invention, in order to obtain the above-described effects more reliably, for example, as shown in FIG. 9, the rear end of the standing stretchable material 60B is disposed up to the rear end of the absorbent pad 50B . On the other hand, since the front end of the stretchable material for standing is fixed to the top sheet, it is not preferable to deform it by the shrinkage force of the stretchable material for standing. Therefore, it is not necessary to arrange the front end of the standing stretchable material up to the front end of the absorbent pad.

Hereafter, the arrangement | positioning form of the elastic material for standing is demonstrated, referring drawings. In the following example, the example of the disposable diaper 1A shown in FIG. 1 is described. However, the same arrangement can be adopted in the disposable diaper 1B shown in FIG.

  FIG. 10A is a schematic diagram illustrating a state where the portion of the absorbent pad 50A of the disposable diaper 1A illustrated in FIG. 1 is viewed from the upper surface side. FIG. 10B is a schematic diagram showing an A-A ′ cross section of the absorbent pad 50 </ b> A shown in FIG. 10A. Reference numeral 62A denotes a joint portion with the top sheet.

  Two absorbent pads 50A shown in FIGS. 10A and 10B are provided on the outer sides of the left and right side edges of the second absorbent body 54A, of the flap portions formed by the upper cover sheet 56A and the lower cover sheet 58A. It is the example which has arrange | positioned the elastic material 60A for standing up.

  In this configuration, since the extending elastic member 60A does not overlap the second absorbent body 54A, the force for warping the second absorbent body 54A is weaker than the absorbent pad 50C shown in FIG. 11A. However, even in such a form, it is possible to warp the second absorbent body 54A by the contraction force of the standing elastic member 60A. In particular, when the second absorbent body 54A is in a form in which the second absorbent body 54A easily warps, such as when the second absorbent body 54A is relatively thin, the effects of the present invention can be sufficiently exerted.

  FIG. 11A is a schematic diagram illustrating a state of the absorbent pad 50C portion of the disposable diaper as viewed from the upper surface side. FIG. 11B is a schematic view showing an A-A ′ cross section of the absorbent pad 50 </ b> C shown in FIG. 11A. Reference numeral 62C indicates a joint portion with the top sheet.

  Each of the absorbent pads 50C shown in FIGS. 11A and 11B is one on each of the flap portions formed by the upper cover sheet 56C and the lower cover sheet 58C, outside the left and right side edges of the second absorbent body 54A. This is an example in which the standing stretchable material 60C is disposed, and each standing stretchable material 60C is also disposed between the upper covering sheet 56C and the second absorbent body 54C.

  In this configuration, a part (two out of four) of the standing stretchable material 60C is arranged so as to overlap the second absorbent body 54C, and therefore, the second absorption compared with the absorbent pad 50A shown in FIG. 10A. There is an advantage that the body 54C is easily warped. Further, since a part of the standing elastic member 60C is disposed on the second absorbent body 54C, it is not necessary to increase the area of the flap portion exclusively for the arrangement of the standing elastic member 60C. That is. Compared to the absorbent pad 50A shown in FIG. 10A, the flap portion can be made narrower (less area).

  FIG. 12A is a schematic diagram illustrating a state of the absorbent pad 50D portion of the disposable diaper as viewed from the upper surface side. FIG. 12B is a schematic view showing an A-A ′ cross section of the absorption pad 50 </ b> D shown in FIG. 12A. Reference numeral 62D denotes a joint portion with the top sheet.

  Each of the absorbent pads 50D shown in FIGS. 12A and 12B is one in each of the flap portions formed by the upper covering sheet 56D and the lower covering sheet 58D on the outer side of the left and right side edges of the second absorbent body 54D. The standing elastic members 60D are arranged, and five standing elastic materials 60D are arranged between the upper covering sheet 56D and the second absorbent body 54D in the vicinity of the left and right side edges of the second absorbent body 54D. It is an example.

  In this configuration, there are as many as 10 standing stretchable members 60D (5 each on the left and right sides) arranged so as to overlap the second absorbent body 54D. For example, when the second absorbent body 54D is relatively thick, the second Even in the case where the absorber 54D is not easily warped, the effect of the present invention can be sufficiently exerted.

  FIG. 13A is a schematic diagram showing a state of the absorbent pad 50E portion of the disposable diaper as viewed from the upper surface side. FIG. 13B is a schematic view showing an A-A ′ cross section of the absorption pad 50 </ b> D shown in FIG. 13A. Reference numeral 62E denotes a joint portion with the top sheet.

  The absorbent pad 50E shown in FIGS. 13A and 13B is an example of an absorbent pad that does not have a flap portion. The absorbent pad 50E is configured to wrap the second absorbent body 54E and the lower cover sheet 58E by the side edges of the upper cover sheet 56E, and the second absorbent body 50E is interposed between the upper cover sheet 56E and the second absorbent body 54E. In this example, two standing stretchable members 60E are arranged in the vicinity of the left and right side edges of the body 54E. That is, the extending elastic member 60E is disposed only between the upper covering sheet 56E and the second absorbent body 54E.

  Since this structure does not have a flap part, it can absorb in the width direction whole region of the absorption pad 50E. In addition, since the absorbent pad 50E can be configured to be narrower than the flap portion, the absorbent pad 50E can be suitably used as an absorbent pad disposed in a narrow portion.

  As the stretchable material for standing up, stretchable materials that have been used in conventional disposable diapers can be used. Specifically, a stretchable net, a stretchable film, and a stretchable foam (urethane foam, etc.) can be used in addition to thread rubber and flat rubber made of an elastic material such as natural rubber and synthetic rubber (urethane rubber, etc.).

  The stretchable material for standing up may be fixed to the cover sheet and the second absorbent body or to the upper cover sheet and the lower cover sheet using a thermoplastic resin (for example, a hot melt adhesive). Further, the covering sheet and the second absorbent body, or the upper covering sheet and the lower covering sheet can be bonded together by being thermally welded together with the stretchable material for standing. As a heat welding method, for example, a method such as heat sealing or ultrasonic welding can be used.

[2] Configuration of other parts of the disposable diaper of the present invention:
The disposable diaper of this invention is formed from each part of the front body 2, the crotch part 4, and the back body 6, like the disposable diaper 1B shown in FIGS. 6-9 , for example, and the 1st absorber 22 and at least one part Is made of a liquid permeable material and is arranged to cover the upper surface of the first absorbent body 22, and is made of a liquid impermeable material and is arranged to cover the lower surface of the first absorbent body 22. A disposable diaper provided with a back sheet 20.

[2-1] First absorber:
A 1st absorber is a member for absorbing and holding a wearer's urine. Since a 1st absorber needs to absorb and hold | maintain a wearer's urine and body fluid, it is comprised with an absorptive material.

  As the absorbent material constituting the first absorbent body, a conventionally known absorbent material usually used for disposable diapers and other absorbent articles, for example, fluff pulp made of wood pulp or non-wood pulp in the form of cotton is mainly used. A material in which a superabsorbent polymer (hereinafter referred to as “SAP”) is used in combination with a superabsorbent polymer is preferable. In addition to the fluff pulp, fibers made of a thermoplastic resin, fibers made of acetate, rayon, or the like can also be used. These materials are preferable because the SAP can be prevented from leaking to the outside by wrapping the whole with water absorbent paper or the like. Furthermore, an SAP sheet that is fixed on the surface of a nonwoven fabric or water-absorbing paper or that is fixed so that the SAP is sandwiched between a plurality of nonwoven fabrics or water-absorbing paper can also be used as the absorbent material.

  These absorbent materials are usually used as a single-layer or multi-layer mat. Under the present circumstances, 1 type may be used independently among the said absorptive materials, and 2 or more types may be used together. Especially, what used together about 10-500 mass parts SAP with respect to 100 mass parts of fluff pulp is preferable. At this time, the SAP may be uniformly mixed in each mat of fluff pulp, or may be arranged in layers between the layers of the multilayer fluff pulp.

  It is preferable that the first absorbent body is interposed in at least a part between the top sheet and the back sheet. Usually, a 1st absorber is inserted | pinched between a top sheet and a back sheet by being pinched | interposed between a top sheet and a back sheet, and the peripheral part is sealed. Therefore, the flap part in which the 1st absorber is not interposed between the top sheet and the back sheet is formed in the peripheral part of the 1st absorber.

  It is preferable that the first absorbent body is entirely wrapped with a hydrophilic sheet. Such a configuration has an advantage that SAP can be prevented from leaking from the first absorbent body and shape stability can be imparted to the first absorbent body.

  Although there is no restriction | limiting in particular about the shape of a 1st absorber, The shape used in the conventional disposable diaper and other absorbent articles, for example, a rectangular shape, an hourglass type, a gourd type, a T shape etc. can be mentioned. .

[2-2] Top sheet:
A top sheet is a sheet | seat arrange | positioned so that the upper surface (surface located in a wearer's skin side at the time of mounting | wearing of a diaper) may be coat | covered. Since the top sheet needs to absorb the wearer's urine by the first absorber disposed on the lower surface side thereof, at least a part (all or a part) of the top sheet is made of a 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, or nylon and subjected to a hydrophilic treatment.

  The top sheet may be composed of a single sheet material, but may be composed of a plurality of sheet materials. In a tape-type disposable diaper, a top sheet (center sheet) made of a liquid-permeable material is arranged at the center of the diaper, and a top sheet (side sheet) made of a water-repellent material is arranged at the side flap portion of the diaper. The form is often used.

  As the water-repellent material constituting the side sheet, non-woven fabric such as spunbond or card embossing can be used. Among these, nonwoven fabrics such as SMS (spunbond / meltblown / spunbond) and SMMS (spunbond / meltblown / meltblown / spunbond) have the advantage of high water pressure resistance and can be suitably used.

[2-3] Backsheet:
A back seat | sheet is a sheet | seat arrange | positioned so that the lower surface (surface located in a wearer's clothing side at the time of mounting | wearing of a diaper) of a 1st absorber may be coat | covered. The back sheet is made of a liquid-impermeable material because it is necessary to prevent the wearer's urine from leaking outside the diaper.

  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.

  Note that a sheet material (cover sheet) may be bonded to the outer surface 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.

[2-4] Solid gathering:
The disposable diaper of this invention consists of a water-repellent sheet along the both side edges of the 1st absorber 22 among the surfaces of the top sheet 18 like the disposable diaper 1B shown in FIG.6 and FIG.7, for example . It is preferable that a pair of three-dimensional gathers 26 are provided so as to be able to stand upright.

  The three-dimensional gather is a member for preventing side leakage of the urine excreted by the wearer, and is a leak-proof wall configured to stand up three-dimensionally. By forming this three-dimensional gather, the three-dimensional gather becomes a breakwater, and leakage from the opening around the leg of the diaper or the like (so-called “lateral leakage”) can be effectively 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, it is possible to suitably use a material in which a stretchable material (a three-dimensional gathered stretchable material) is arranged on a part of the sheet material, and a gather is formed on the sheet material by the three-dimensional gathered stretchable material.

  As the sheet material constituting the three-dimensional gather, it is preferable to use a sheet made of a water-repellent material (water-repellent sheet) from the viewpoint of improving the leak-proof property of the three-dimensional gather.

  As the three-dimensional gather stretchable material, stretchable materials that have been used in conventional disposable diapers can be suitably used. 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 three-dimensional gather stretchable material as described above is fixed to the water-repellent sheet 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.

  The three-dimensional gather stretchable material is preferably fixed in an expanded state in order to cause a sufficient stretch force to act on the three-dimensional gather. When the three-dimensional gather stretchable material is composed of natural rubber or synthetic rubber, it is preferably fixed in an extended state of 120 to 400%, and more preferably fixed in an extended state of 200 to 300%. By fixing in the extended state in such a range, it is possible to apply a sufficient stretching force, and it is possible to reliably raise the three-dimensional gather.

  There are three types of three-dimensional gathers: (1) Inverted gathers that incline toward the inner side of the diaper, (2) Outer gathers that incline toward the outer side of the diaper, and (3) A bent portion at a part in the height direction. And three-dimensional gathers (C-folded gathers, Z-folded gathers, etc.) in which folded portions are formed. Of these, inward gathering is preferable in terms of high leakage prevention.

  The three-dimensional gather is preferably formed over the entire area of both side edges of the first absorbent body, but for the purpose of preventing side leakage of urine, it should be disposed at least in a portion corresponding to the crotch part of the diaper. Good.

  “Along each side edge of the first absorbent body” means that it is attached substantially in the same direction as the side edge of the first absorbent body. However, the side edge of the first absorbent body may be formed in a curve along the leg opening, and is not always formed in a straight line. Therefore, it is not always necessary to be attached so as to be in contact with the side edge of the first absorber, and it is not necessary to be attached so as to draw the same locus as the side edge of the first absorber. Usually, the three-dimensional gathers are often arranged linearly regardless of the shape of the first absorber.

[2-5] Various elastic materials:
In the disposable diaper, various elastic materials are arranged for the purpose of preventing leakage and improving fit. If the disposable diaper of this invention is a case of a tape type disposable diaper, for example, like the disposable diaper 1B shown in FIG. 6 and FIG. It is preferable. On the other hand, in a pants-type disposable diaper, in addition to this, an elastic material around the abdomen is also disposed.

  The leg-surrounding stretchable material is a stretchable material disposed in the leg-surrounding 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.

  In the case of a tape-type disposable diaper, a configuration in which the leg-surrounding elastic material is linearly arranged so as to be inscribed in the leg-surrounding opening can be employed. On the other hand, in the case of a pants-type disposable diaper, a configuration in which the pants-type disposable diaper is arranged in a curved line along the trajectory of the leg opening can be employed.

  A waist circumference elastic material is an elastic material arrange | positioned at a waist circumference opening part. 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.

  In the case of a tape-type disposable diaper, the waist elastic material is a belt-like elastic material (at least along the back body side end of the diaper, preferably along the back body side and the front body side end ( For example, a configuration in which a urethane foam or the like is disposed in the center in the width direction can be employed. On the other hand, in the case of a pants-type disposable diaper, a configuration in which a linear elastic material (thread rubber, flat rubber, or the like) is arranged over the entire circumference along the opening around the waist can be adopted.

  An abdominal circumference elastic material is an elastic material arrange | positioned in the part (namely, part corresponding to a wearer's abdominal circumference) between the waist circumference opening part and leg leg opening part of a pants type disposable diaper. 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.

  About these elastic materials, the structure similar to the three-dimensional gather elastic material already described can be employ | adopted. Then, after considering the degree of gather contraction and the like, the constituent material, the elongation rate of the material, the stretched state at the time of fixing, etc. may be determined.

  The disposable diaper of this invention is demonstrated more concretely, referring drawings. However, the disposable diaper of this invention includes all the disposable diapers provided with the invention specific matter, and is not limited to the following examples.

The “tape-type disposable diaper” is formed from the front body 2, the crotch part 4, and the back body 6, as in the disposable diaper 1 </ b> B shown in FIGS. 6 to 9 , and includes at least the first absorbent body 22, A part is made of a liquid permeable material, and is arranged so as to cover the upper surface of the first absorbent body 22. The top sheet 18 is made of a liquid impermeable material and covers the lower surface of the first absorbent body 22. The back sheet 20 is arranged, and is arranged so as to extend from the left and right side edge portions 6a, 6b of the back body 6, and includes a fastening tape 10 for fixing the front body 2 and the back body 6. Means disposable diapers.

( Reference Example 1)
As Reference Example 1, a tape-type disposable diaper 1A shown in FIGS.

[1] Composition of absorption pad:
The disposable diaper 1 </ b> A includes an absorbent pad 50 </ b> A that is arranged so as to cover at least a part of a region in front of the feces falling region 52 </ b> A in the top sheet 18.

  The absorbent pad 50A is made of a liquid permeable material with the second absorbent body 54A, and covers the upper cover sheet 56A arranged to cover the upper surface of the second absorbent body 54A, and the lower surface of the second absorbent body 54A. The lower covering sheet 58 </ b> A arranged in this manner and the standing stretchable material 60 </ b> A for standing the absorbent pad 50 </ b> A in three dimensions.

  The second absorbent body 54A is an absorbent body that contains 100 parts by mass of SAP with respect to 100 parts by mass of fluff pulp, and the whole is wrapped by tissue. The second absorber 54A has a rectangular shape with a width of 100 mm and a length of 173 mm. The second absorber 54A is sandwiched between the upper coating sheet 56A and the lower coating sheet 58A by being sandwiched between the upper coating sheet 56A and the lower coating sheet 58A and sealed at the periphery. Yes.

  The upper coating sheet 56A is formed of a liquid-permeable air-through nonwoven fabric using a polypropylene fiber that has been subjected to a hydrophilic treatment as a web. The lower coating sheet 58A is also formed of a liquid-permeable spunbond nonwoven fabric obtained by subjecting a polypropylene spunbond nonwoven fabric to a hydrophilic treatment. The upper cover sheet 56A and the lower cover sheet 58A are 195 mm long × 120 mm wide sheet materials.

  The upper covering sheet 56A and the lower covering sheet 58A are bonded together with a hot melt adhesive in a state where the second absorbent body 54A is sandwiched from above and below, and the peripheral edge portion is sealed. That is, the second absorbent body 54A is interposed between the upper cover sheet 56A and the lower cover sheet 58A, and a flap portion extending to the peripheral edge portion of the second absorbent body 54A is formed. The flap portion on the front end side of the absorbent pad 50A has a width of 15 mm, the flap portions on the left and right edge sides have a width of 10 mm, and the flap portion on the rear end side has a width of 7 mm.

  The length of the disposable diaper 1A in the front-rear direction is 480 mm, and the maximum width in the left-right direction is 330 mm. 50 A of absorption pads are arrange | positioned so that the rear end may be located 10 mm ahead of the straight line which bisects the disposable diaper 1A so as to be orthogonal to the length direction. Further, the right and left edges of the absorbent pad 50 </ b> A are arranged so as to be located inside the pair of three-dimensional gathers 26 at a position 10 mm inside the fixed ends of the three-dimensional gathers 26. .

  The absorbent pad 50 </ b> A is fixed to the surface of the top sheet 18. The joining portion 62A between the absorbent pad 50A and the top sheet 18 is formed so that only the front edge of the absorbent pad 50A is joined to the surface of the top sheet 18, and the left side edge and right side of the absorbent pad 50A. The edge portion and the rear end edge portion are not joined to the surface of the top sheet 18.

  The absorbent pad 50A has a standing elastic member 60A. The stretchable material for standing 60A is disposed in the flap portion formed by the upper covering sheet 56A and the lower covering sheet 58A, and more specifically, the front-rear direction of the diaper, that is, the side edge of the second absorbent body 54A. Along the left and right regions of the second absorbent body 54A in the flap portion. Further, the standing stretchable material 60A is fixed at a stretch rate of 250%, two on each of the left and right sides of the second absorbent body 54A.

  The standing stretchable material 60A is disposed until the rear end reaches the rear end of the absorbent pad 50A. On the other hand, the front end of the standing elastic member 60A is disposed to a position 140 mm ahead from the rear end of the absorbent pad 50A.

[2] Configuration of other parts:
The 1st absorber 22 is an absorber containing 100 mass parts SAP with respect to 100 mass parts of fluff pulp, and the whole is wrapped with tissue. The first absorber 22 has a rectangular shape, is sandwiched between the top sheet 18 and the back sheet 20, and is interposed between the top sheet 18 and the back sheet 20 by sealing the peripheral edge thereof. Yes.

  The top sheet 18 is composed of a plurality of sheet materials. A top sheet (center sheet 18a) made of a liquid-permeable material is disposed at the center of the diaper, and a top sheet (side sheet 18b) made of a water-repellent material is disposed on the side flap 8 portion of the diaper. The center sheet 18a is formed of a liquid-permeable air laid nonwoven fabric manufactured by using polypropylene fibers subjected to a hydrophilic treatment as raw cotton. On the other hand, the side sheet 18b is made of an SMS nonwoven fabric having water repellency and high water pressure resistance.

  The back sheet 20 is constituted by a microporous polyethylene film in which a large number of fine pores (pore diameters of about 0.1 to several μm) that allow water vapor to pass but do not pass water. A cover sheet 28 made of a nonwoven fabric made of polypropylene is bonded to the outer surface side of the back sheet 20.

  Further, in the disposable diaper 1 </ b> A, one fastening tape 10 is disposed on each of the left and right side edges 6 a and 6 b of the back body 6. The fastening tape 10 includes a base material 48 made of a nonwoven fabric and a hook material 44 of a mechanical fastener attached to the surface of the base material 48. On the other hand, the front body 2 is provided with a front patch made of a loop material of a mechanical fastener (not shown) so that the hook material 44 can be fixed.

  In the disposable diaper 1A, a pair of three-dimensional gathers 26 is attached linearly in the front-rear direction of the diaper. The three-dimensional gather 26 is a flip-up type three-dimensional gather made of a water-repellent sheet and integrally formed with the side sheet 18b. The height of the three-dimensional gather 26 (the length from the lower end edge 38 to the upper end edge 34) is 40 mm. The three-dimensional gather 26 is formed to have a length that covers the entire longitudinal direction of the disposable diaper 1A.

  In the vicinity of the upper end edge 34 of the three-dimensional gather 26, a three-dimensional gather expansion / contraction material 36 is disposed. This three-dimensional gather 26 is arranged so that the free end side (the end portion not fixed to the top sheet 18) of the water-repellent sheet 32 is folded and two three-dimensional gather elastic members 36 are sandwiched between the folded portions. It is. The three-dimensional gather stretchable material 36 is fixed to the water-repellent sheet 32 at an elongation rate of 250%.

  The disposable diaper 1 </ b> A has three leg-around elastic members 40 arranged linearly on a portion outside the lower end edge 38 (fixed end, standing line) of the three-dimensional gather 26 along the longitudinal direction of the diaper. In the disposable diaper 1 </ b> A, a belt-like waist elastic member 42 is disposed along the edge of the front body 2 and the edge of the back body 6 of the diaper. This belt-like waist elastic member 42 is made of urethane foam.

[3] Manufacturing method:
Hereinafter, a method of manufacturing a disposable diaper 1A shown in FIGS.

  First, the second absorbent body 54A in which a mixed mat of fluff pulp and SAP is wrapped with tissue is disposed on the upper surface of the lower covering sheet 58A, and the upper covering sheet 56A is disposed on the upper surface thereof. Next, the absorbent pad 50A is obtained by sealing the periphery of the second absorbent body 54A so as to be sandwiched between the upper coating sheet 56A and the lower coating sheet 58A.

  On the other hand, on the surface of a long sheet material (back sheet material) which is a material of the back sheet 20, the first absorbent body 22 and leg elastic members 40 wrapped in tissue are placed, and a top sheet is further formed on the surface. By placing a long sheet material (top sheet material) 18 and a previously formed absorbent pad 50A, a laminate (diaper continuum) serving as an intermediate body of the diaper is obtained.

  At this time, as the top sheet material, two types of a top sheet material (center sheet material) corresponding to the center sheet 18a and a top sheet material (side sheet material) corresponding to the side sheet 18b are used.

  An absorbent pad 50A formed in advance is bonded to the center sheet material. The absorbent pad 50A is bonded to the center sheet material so that the left edge, the front edge, and the right edge are continuously formed in a U shape. On the other hand, the side sheet sheet material is provided with a folded portion to form a portion that becomes the three-dimensional gather 26. Thereafter, the side sheet material is bonded to the center sheet material.

  In the diaper continuous body obtained as described above, a portion corresponding to the opening around the leg of the diaper is cut out in an arc shape and cut (R cut) to form an opening around the leg. Finally, the fastening tape 10 is attached to the side edges 6a and 6b of the back body 6 of the diaper, and the disposable diaper 1A is manufactured by cutting the diaper continuous body into individual diapers. At this time, the left and right side edge portions 6a and 6b of the back body 6 and the end portion of the fastening tape 10 are joined by a hot melt adhesive.

  In addition to the method described above, an elastic fastening tape is previously attached to the top sheet material, and the first absorbent body and leg elastic material wrapped in a hydrophilic sheet are formed on the surface of the back sheet material. The diaper continuous body may be obtained by placing and placing a top sheet material with a stretchable fastening tape attached on the surface thereof.

  The series of steps as described above can be continuously performed by mechanical means. For example, by adopting a method / apparatus such as continuously feeding a long sheet material from a roller, continuous production of a tape-type diaper becomes possible, which contributes to improvement of productivity.

(Example 1 )
As Example 1 , a tape-type disposable diaper 1B shown in FIGS. 6 to 9 will be described. Disposable diaper 1B of Example 1, except the configuration of the joint portion 62B, are configured similarly to the disposable diaper 1A of Example 1. Hereinafter, the configuration of the joint portion 62B will be mainly described.

  The absorbent pad 50 </ b> B is fixed so that the fixed ends are positioned on the surface of the top sheet 18, more specifically, on the left and right flap portions of the first absorbent body 22. The joint portion 62B between the absorbent pad 50B and the top sheet 18 is formed so that the left side edge, front end edge, and right side edge of the absorbent pad 50B are continuously joined to the surface of the top sheet 18. The rear edge portion of the absorbent pad 50B is not joined to the surface of the top sheet 18. Specifically, among the four sides of the absorbent pad 50B, the three sides of the left edge, the front edge, and the right edge are joined and fixed in a U-shape, and only one side of the rear edge is open. As a result, an opening is formed.

The joining portion 62B is formed at the left edge and the right edge of the absorbent pad 50B from the rear end of the absorbent pad 50B to the front end of the absorbent pad 50B starting at a position 30 mm ahead. That is, the joint portion 62B is in a non-joined state from the rear end of the absorbent pad 50B to a portion 30 mm ahead thereof.

On the other hand, the standing elastic member 60B is disposed from the rear end of the absorbent pad 50B to the rear end of the absorbent pad 50B starting from a position 140 mm ahead. That is, the standing elastic member 60B is disposed such that its rear end protrudes 30 mm rearward from the rear end of the joint portion 62B formed at the left and right edges of the absorbent pad 50B.

  The disposable diaper of the present invention can be suitably used as a diaper for infants or for adults such as elderly people and persons with disabilities who need care.

  The disposable diaper of the present invention can be applied to a pants-type disposable diaper in addition to a tape-type disposable diaper.

  "Pants-type disposable diaper" is a pants-shaped configuration that has one waist opening and a pair of leg openings by joining the corresponding side edges of the front and back bodies together. It means a diaper that has been made.

  For example, it is composed of an absorbent main body that functions to absorb and retain the excrement of the wearer (absorption / retention function) and an exterior member that functions to encapsulate the wearer's body (mounting function). In the case of a two-piece type pants-type disposable diaper in which the absorbent main body is arranged inside the member, the effect of the present invention is achieved by forming a flow-inhibiting region on the surface of the top sheet constituting the absorbent main body. Can be enjoyed.

Is a plan view showing one embodiment of a disposable diaper, the disposable diaper to expand, is a plan view showing a state seen from the top sheet side of the diaper. It is a schematic diagram which shows one Embodiment of a disposable diaper, and is a schematic diagram which shows the cross section which cut | disconnected the disposable diaper shown in FIG. 1 along the XX 'line. It is a schematic diagram which shows one Embodiment of a disposable diaper, and is a schematic diagram which shows the cross section which cut | disconnected the disposable diaper shown in FIG. 1 along the YY 'line. It is a partial top view which shows one embodiment of a disposable diaper, and is a top view which shows only the center sheet | seat part of the disposable diaper shown in FIG. It is a schematic diagram which shows one Embodiment of a disposable diaper, and is a schematic diagram which shows the use condition of the disposable diaper shown in FIG. It is a top view which shows another embodiment of the disposable diaper of this invention, is a top view which expand | deploys a disposable diaper and shows the state seen from the top sheet side of the diaper. It is a schematic diagram which shows another embodiment of the disposable diaper of this invention, and is a schematic diagram which shows the cross section which cut | disconnected the disposable diaper shown in FIG. 6 along the X-X 'line. It is a schematic diagram which shows another embodiment of the disposable diaper of this invention, and is a schematic diagram which shows the cross section which cut | disconnected the disposable diaper shown in FIG. 6 along the Y-Y 'line. It is a partial top view which shows another embodiment of the disposable diaper of this invention, and is a top view which shows only the center sheet | seat part of the disposable diaper shown in FIG. It is a partial top view which shows one Embodiment of a disposable diaper , and is a top view which shows only the absorption pad part of the disposable diaper shown in FIG. It is a schematic diagram which shows one Embodiment of a disposable diaper , and is a schematic diagram which shows the cross section which cut | disconnected the absorption pad shown to FIG. 10A along the AA 'line. It is a partial top view which shows another embodiment of a disposable diaper, and is a top view which shows only the absorption pad part of a disposable diaper. It is a schematic diagram which shows another embodiment of a disposable diaper , and is a schematic diagram which shows the cross section which cut | disconnected the absorption pad shown to FIG. 11A along the AA 'line. It is a partial top view which shows another embodiment of a disposable diaper, and is a top view which shows only the absorption pad part of a disposable diaper. It is a schematic diagram which shows another embodiment of a disposable diaper , and is a schematic diagram which shows the cross section which cut | disconnected the absorption pad shown to FIG. 12A along the AA 'line. It is a partial top view which shows another embodiment of a disposable diaper, and is a top view which shows only the absorption pad part of a disposable diaper. It is a schematic diagram which shows another embodiment of a disposable diaper , and is a schematic diagram which shows the cross section which cut | disconnected the absorption pad shown to FIG. 13A along the AA 'line.

Explanation of symbols

1A, 1B: disposable diaper, 2: front body, 2a, 2b: side edge, 4: crotch, 6: back body, 6a, 6b: side edge, 8: side flap, 10: fastening tape, 18 : Top sheet, 18a: Center sheet, 18b: Side sheet, 20: Back sheet, 22: First absorber, 26: Solid gather, 28: Cover sheet, 32: Water repellent sheet, 34: Upper edge, 36: Solid Gather elastic material, 38: Lower edge, 40: Elastic material around leg, 42: Elastic material around waist, 44: Hook material, 48: Base material, 50A, 50B, 50C, 50D, 50E: Absorption pad, 52: Stool fall Area, 54A, 54B, 54C, 54D, 54E: second absorber, 56A, 56B, 56C, 56D, 56E: upper covering sheet, 58A, 58B, 58C, 58D, 58E: lower covering sheet, 6 A, 60B, 60C, 60D, 60E: standing for elastics, 62A, 62B, 62C, 62D, 62E: junction, 64A, 64B: inner space, 66: wearer.

Claims (1)

It is formed from each part of the front body, the crotch, and the back body,
A first absorbent body, at least a part made of a liquid-permeable material, a top sheet arranged to cover the upper surface of the first absorbent body, and a liquid-impermeable material, A back sheet disposed so as to cover the lower surface, and an absorbent pad disposed so as to cover at least a part of a region in front of the feces falling region of the top sheet,
The absorbent pad includes a second absorbent body, an upper covering sheet that is at least partially made of a liquid-permeable material, and is disposed so as to cover an upper surface of the second absorbent body, and a lower surface of the second absorbent body. It has a lower covering sheet arranged so as to cover, and a stretchable material for standing upright to stand the absorption pad in three dimensions,
The standing stretchable material is disposed along the front-rear direction of the diaper,
The absorbent pad is bonded to the surface of the top sheet,
The joint between the absorbent pad and the top sheet is formed such that the left edge, the front edge and the right edge of the absorbent pad are continuously joined to the surface of the top sheet ,
The rear edge portion of the absorbent pad is in a non-bonded state with respect to the surface of the top sheet,
As for the elastic material for standing up, the rear end protrudes back from the rear end of the joined part formed in the left side edge part and the right side edge part of the absorption pad, and is arranged to the rear end of the absorption pad. Disposable diapers.

Images