JP2021115398A - Absorptive product - Google Patents

Abstract

To provide an absorptive product in which a fitting feeling can be improved.SOLUTION: An absorptive product is provided with, in this order in a longitudinal direction: a front body region positioned on an abdominal side of a wearer during fitting; a crotch region positioned on a crotch area; and a back body region positioned on a back side. The absorptive product includes: an absorptive body provided so as to include the crotch region; a pair of groove parts extending in a longitudinal direction and formed at least in the crotch region of the absorptive body; and a pair of creases extending in a longitudinal direction and formed on a sheet member provided in the front body region on a pair of virtual lines which is a line extended from the pair of groove parts in a longitudinal direction on the side of the front body region.SELECTED DRAWING: Figure 5

Description

The present invention relates to absorbent articles.

Absorbent articles such as disposable diapers, urine pads, and sanitary napkins are provided with an absorber that absorbs liquids such as urine and body fluids discharged by the wearer. If the absorber is irregularly bent or twisted while the absorbent article is attached to the wearer, the tactile sensation to the wearer and the liquid absorbency may be deteriorated, and the wearing feeling of the absorbent article may be deteriorated. be. Therefore, in the absorbent article described in Patent Document 1, a groove-like portion is formed in the inseam region of the absorber so that the absorber bends along the skin surface of the wearer while being worn on the wearer. ing.

Japanese Patent No. 6369507

In the configuration in which the groove-shaped portion is not formed in the front body region or the back body region of the absorber, the groove-shaped portion is relatively short with respect to the absorber, so that the absorber is difficult to bend. If the absorbent body does not bend along the wearer's skin surface, the wearing feeling of the absorbent article may be deteriorated.

Therefore, an object of the present invention is to provide an absorbent article capable of improving the wearing feeling.

In order to solve the above problems, in the present invention, a pair of groove-shaped portions are formed on a pair of virtual lines extending in the longitudinal direction toward the front body region and arranged on the front body region. A pair of wrinkles extending in the longitudinal direction were provided.

Specifically, in the present invention, when worn, the front body region located on the abdominal side of the wearer, the inseam region located on the inseam side, and the back body region located on the back side are provided in this order in the longitudinal direction. An article, an absorber arranged including the inseam region, a pair of groove-shaped portions extending in the longitudinal direction and formed at least in the inseam region of the absorber, and the pair of groove-shaped portions. A pair of wrinkles formed on a sheet member arranged in the front body region on a pair of virtual lines extending in the longitudinal direction toward the front body region and extending in the longitudinal direction. To be equipped.

In the absorbent article, the pair of wrinkles may be formed by an adhesive applied to the sheet member.

In the absorbent article, the pair of wrinkles may be formed by embossed grooves formed in the sheet member.

In the absorbent article, the pair of wrinkles may be formed by an elastic member attached to the sheet member in an extended state.

The absorbent article is joined to an exterior sheet forming the exterior surface of the absorbent article in the front body region, and a front sheet to which a tape for fixing the absorbent article to the wearer is attached. And the tape for fixing the absorbent article around the wearer's waist while being attached to the front seat, which is projected from the back body region on both sides in the width direction. May be good.

In the absorbent article, the pair of wrinkles may be arranged so as to include at least a region overlapping the front sheet when viewed in the thickness direction.

In the absorbent article, the front sheet may be a hook-and-loop fastener in which loops engaged with hooks formed on the surface of the tape are arranged on the surface.

In the absorbent article, the absorber is arranged on the front body region side of the first absorbing portion in which the pair of groove-shaped portions are formed and the first absorbing portion, and is located on the front body region side of the first absorbing portion. It may have a second absorption portion having a small basis weight.

Even if the absorbent article is arranged including at least the inseam region, extends in the longitudinal direction at a position overlapping the absorbent body in the thickness direction, and includes a pair of elastic members attached in an extended state. good.

The absorbent article includes a liquid-permeable top sheet arranged on the skin surface side of the absorbent body, and the groove-shaped portion may be formed on the absorbent body and the top sheet.

According to the present invention, the wearing feeling of the absorbent article is improved.

FIG. 1 is a perspective view of a diaper according to the first embodiment. FIG. 2 is an exploded perspective view of the diaper according to the first embodiment. FIG. 3 is a cross-sectional view of a diaper in a non-wearing state when the center in the longitudinal direction is cut along the width direction. FIG. 4 is a plan view of the diaper according to the first embodiment as viewed from the skin surface side. FIG. 5 is a plan view of the diaper according to the first embodiment as viewed from the non-skin surface side. FIG. 6 is a plan view of the diaper according to the first embodiment as viewed from the non-skin surface side. FIG. 7 is a plan view of the diaper according to the first embodiment as viewed from the non-skin surface side. FIG. 8 is a plan view of the diaper according to the first embodiment as viewed from the non-skin surface side. FIG. 9 is a cross-sectional view of the diaper in the worn state when the center in the longitudinal direction is cut along the width direction. FIG. 10 is a plan view of the diaper according to the second embodiment as viewed from the non-skin surface side.

Hereinafter, the absorbent article according to the embodiment of the present invention will be described with reference to the drawings. The configurations of the following embodiments are examples, and the present invention is not limited to the configurations of these embodiments.

<Embodiment 1>
In the present embodiment, the front body of a tape-type disposable diaper (an example of the "absorbent article" in the present application, hereinafter simply referred to as "diaper") is arranged facing the wearer's abdomen (FIGS. 1 and 1). The longitudinal direction is the direction connecting the front body region 1F shown in FIG. 3) and the rear body (rear body region 1R shown in FIGS. 1 and 3) arranged to face the back. An inseam placed in the wearer's inseam (opposed to the crotch) between these front bodies (one side in the longitudinal direction) and the back body (other side in the longitudinal direction) (center in the longitudinal direction). The portion (inseam region 1B shown in FIGS. 1 and 3) is located. In addition, when the diaper is worn on the wearer (hereinafter abbreviated as "wearing state"), the side facing the wearer's skin (inside when worn) is the skin side, and the opposite side of the skin side. (Outside when attached) is the non-skin side. Further, the direction connecting the skin surface side and the non-skin surface side is the thickness direction, and the direction orthogonal to both the longitudinal direction and the thickness direction is the width direction. In addition, viewing from the thickness direction is defined as a plan view.

FIG. 1 is a perspective view of a diaper according to the present embodiment. The diaper 1 is located in the inseam area 1B, which is a part corresponding to the inseam area covering the wearer's genital area in the worn state, and the front body area 1F, which is a part corresponding to the wearer's front body, located on the front side of the inseam area 1B. And the back body region 1R, which is located behind the inseam region 1B and corresponds to the back body of the wearer. Tapes 2L and 2R that can be attached to the front patch 2F (an example of "front seat") provided on the non-wearer side of the front body area 1F are provided on the left and right edges of the back body area 1R. ing. Therefore, in the diaper 1, when the tapes 2L and 2R are attached to the front patch 2F with the front body area 1F arranged on the ventral side of the wearer and the back body area 1R arranged on the back side of the wearer. , It is fixed to the wearer's body in a state surrounding the wearer's abdominal circumference and thighs. Since the diaper 1 is fixed to the wearer's body in such a form, the wearer can walk while wearing the diaper 1.

In the diaper 1, an absorber capable of absorbing and holding the liquid is arranged including the inseam region 1B. Further, in the diaper 1, in order to suppress the formation of a gap that serves as a liquid outflow route between the diaper 1 and the wearer's skin, a three-dimensional gather 3BL, A 3BR is provided, and a waist gather 3R is provided at a portion surrounding the wearer's abdominal circumference. The three-dimensional gathers 3BL and 3BR and the waist gathers 3R come into close contact with the wearer's skin due to the elastic force of the rubber thread. Therefore, the liquid discharged from the pubic area of the wearer is absorbed by the absorber of the diaper 1 without leaking from the diaper 1.

Further, the width direction dimension of the inseam region 1B of the diaper 1 is set to be slightly larger than the dimension between the bases of both legs of a general wearer. Therefore, the diaper 1 can be put on while the absorber in the inseam region 1B is bent in the width direction.

FIG. 2 is an exploded perspective view of the diaper 1. FIG. 3 is a cross-sectional view of the diaper 1 in the non-wearing state when the center in the longitudinal direction is cut along the width direction. FIG. 4 is a plan view of the stretched diaper 1 as viewed from the skin surface side.

The diaper 1 has a cover sheet 4 (an example of an "exterior sheet") that forms an outer surface when worn. The cover sheet 4 is a sheet-like member having a substantially rectangular appearance with 4KL and 4KR constricted in a portion corresponding to a long side, and forms an exterior surface of the diaper 1. The constrictions 4KL and 4KR are provided at locations where the wearer's thighs are located. The cover sheet 4 is provided for reinforcing the back sheet 5 and improving the feel, which will be described later. For example, in order to suppress leakage of excrement, a non-woven fabric made of a liquid-impermeable thermoplastic resin is used as the material thereof. be able to. Examples of the liquid-impermeable thermoplastic resin include polyethylene (PE) and polypropylene (PP). The cover sheet 4 is not limited to a single-layer structure, and may have a multi-layer structure having an inner cover sheet and an outer cover sheet.

The diaper 1 has a back sheet 5, an absorber 6C, and a top sheet 7 that are sequentially laminated on the wearer-side surface of the cover sheet 4. The back sheet 5 and the top sheet 7 are sheet-like members having a substantially rectangular appearance. The absorber 6C is a sheet-like member formed in which the width direction dimension of the inseam region 1B is smaller than that of the front body region 1F and the back body region 1R. An absorber 6C having a substantially rectangular appearance with substantially constant width direction dimensions may be used. The back sheet 5, the absorber 6C, and the top sheet 7 are sequentially laminated on the cover sheet 4 in a state where the longitudinal direction coincides with the longitudinal direction of the cover sheet 4. Like the cover sheet 4, the back sheet 5 is a sheet formed of a liquid-impermeable thermoplastic resin as a material in order to suppress leakage of excrement. The back seat 5 is preferably made of a material having moisture permeability in order to suppress stuffiness in the wearing state. Further, the top sheet 7 is arranged on the skin surface side of the wearer so as to cover the water absorption surface of the absorber 6C. The top sheet 7 has liquid permeability in a part or all of it. Therefore, in the state where the diaper 1 is worn, the liquid excreted from the wearer enters the absorber 6C through the top sheet 7 which can come into contact with the wearer's skin, and is absorbed there. For example, a woven fabric, a non-woven fabric, or a porous film can be used as a material for the top sheet 7. The top sheet 7 may have hydrophilicity. Further, the absorber 6C is arranged including the inseam region 1B.

The back sheet 5, the absorber 6C, and the top sheet 7 all extend from the front body region 1F to the back body region 1R. Therefore, when the wearer's pubic area is covered with the cover sheet 4 in which the back sheet 5, the absorber 6C, and the top sheet 7 are laminated, both ends of the back sheet 5, the absorber 6C, and the top sheet 7 in each longitudinal direction are displayed. It will be located on the ventral and dorsal sides of the wearer. That is, the genital area of the wearer is covered with the absorber 6C from the ventral side to the dorsal side of the wearer. Therefore, regardless of whether the wearer discharges the liquid to the outside of the body in either the abdomen-down posture or the back-down posture, the discharged liquid contacts the absorber 6C via the top sheet 7. Will be done.

Further, the diaper 1 has elongated strip-shaped side sheets 8L and 8R for forming the above-mentioned three-dimensional gathers 3BL and 3BR. The side sheets 8L and 8R are liquid-impermeable sheets provided on the long side portion of the top sheet 7. Similar to the three-dimensional gathers 3BL and 3BR of the diaper 1, the side seats 8L and 8R are provided with 8KL and 8KR constricted at the position where the wearer's thigh is located. The rubber threads 8EL and 8ER are woven into the side sheets 8L and 8R along the longitudinal direction. Therefore, when the diaper 1 is in the mounted state, that is, when the diaper 1 is in the form shown in FIG. 6, the side seats 8L and 8R are attracted in the longitudinal direction by the contraction force of the rubber threads 8EL and 8ER and rise from the top sheet 7. , It becomes a three-dimensional gather that prevents the outflow of liquid.

Further, the thread rubber 9ER for forming the waist gather 3R described above is provided between the back sheet 5 and the top sheet 7 at a position further back than the end portion of the absorber 6C. The rubber thread 9ER is provided between the back sheet 5 and the top sheet 7 in a direction in which the longitudinal direction, which is the expansion and contraction direction, is the left-right direction of the diaper 1. Therefore, when the tapes 2L and 2R provided on the left and right sides of the rubber thread 9ER are attached to the front patch 2F on the ventral side of the wearer, the rubber thread 9ER exerts a contraction force to give the diaper 1 to the wearer. It is brought into close contact to prevent a gap from being formed between the diaper 1 and the wearer's abdominal circumference.

The absorber 6C contains water in the gaps between short fibers of cellulose-based fibers such as pulp fibers, rayon fibers, or cotton fibers, and short fibers obtained by hydrophilizing synthetic fibers such as polyethylene, polypropylene, or polyethylene terephthalate. It has a structure in which a granular absorbent resin such as SAP (Super Absorbent Polymer), which is a hydrophilic polymer having a crosslinked structure capable of absorbing and retaining a fiber, is retained. Therefore, in the absorber 6C, the volume fluctuation of the absorbent resin before and after absorbing the liquid is basically performed in the short fibers that hold the absorbent resin in the gap. Therefore, when the entire absorber 6C is viewed from a bird's-eye view, it can be said that the expansion coefficient of the thickness of the absorber 6C that has absorbed the liquid is not as large as the expansion coefficient of the absorbent resin itself.

The SAP particles of the present embodiment refer to particles of a resin composition containing SAP. The term "resin composition containing SAP" as used herein refers to both a composition consisting of SAP alone and a composition containing SAP as a main component and containing other substances to the extent that it does not adversely affect water absorption. It is a concept that includes. Examples of the "other substance" include additives (surface modifiers added for the purpose of hydrophobizing the particle surface), unreacted monomers remaining during the synthesis of SAP, and the like.

Next, a bent holding structure in which the diaper 1 is worn while the absorber 6C in the inseam region 1B is bent along the wearer's skin will be described. The bent holding structure is a structure for bending and holding the absorber 6C in the inseam region 1B into a predetermined shape. Irregular bending or twisting of the absorber 6C in the inseam region 1B reduces the wearing feeling of the absorbent article. Therefore, the diaper 1 according to the present embodiment is provided with a bent holding structure for bending and holding the absorber 6C in the inseam region 1B into a predetermined shape to improve the wearing feeling.

The diaper 1 according to the present embodiment has a pair of groove-shaped portions 6CH extending in the longitudinal direction of the diaper 1 and formed in the inseam region 1B of the absorber 6C and extending in the longitudinal direction as a bending holding structure. It includes a pair of groove-shaped portions 7H formed in the inseam region 1B of the top sheet 7. As shown in FIG. 4, the pair of groove-shaped portions 6CH and the groove-shaped portion 7H are formed in parallel with each other with a virtual center line C extending in the longitudinal direction at the center in the width direction of the diaper 1 in between. There is.

Further, as shown in FIG. 4, the groove-shaped portion 6CH and the groove-shaped portion 7H overlap in the thickness direction. The groove-shaped portion 6CH and the groove-shaped portion 7H are recessed, for example, by forming a through hole or a slit in the groove in the absorber 6C, or the absorber 6C on which the top sheet 7 is laminated is partially formed. It is recessed (embossed) by pressing (squeezing). In the latter case, the absorber 6C provided with the groove-shaped portion 6CH is in a squeezed (consolidated) state. In other words, the groove 6CH is formed by squeezing the absorber 6C. Further, when the groove-shaped portion 6CH is sufficient for bending the absorber 6C, the diaper 1 is provided with the groove-shaped portion 6CH as a bending holding structure, and the groove-shaped portion 7H is not formed on the top sheet 7. You may. In this case, the groove-shaped portion 6CH partially presses the absorber 6C before the top sheet 7 is laminated, and the groove-shaped portion 7H is not formed on the top sheet 7. Further, the groove-shaped portion 6CH may be formed by, for example, a hole penetrating the absorber 6C.

In the present embodiment, as shown in FIG. 4, the groove-shaped portion 6CH and the groove-shaped portion 7H are formed in a linear shape which is parallel to each other with the center line C in the width direction in between and is paired with each other. .. The groove-shaped portion 6CH and the groove-shaped portion 7H may have a shape that separates or approaches from one side in the longitudinal direction toward the other, or may have another shape such as an arc shape or a wavy shape. Further, three or more groove-shaped portions 6CH and three or more groove-shaped portions 7H may be formed.

Further, the diaper 1 is arranged so as to include at least the inseam region 1B in order to facilitate the maintenance of the above-mentioned bent holding structure, extends in the longitudinal direction at a position overlapping with the absorber 6C in the thickness direction, and is in an extended state. It is provided with a pair of thread rubbers 4CL and 4CR attached. The rubber threads 4CL and 4CR are examples of elastic members. As shown in FIGS. 3 and 4, in the present embodiment, the three rubber threads 4CL and 4CR are attached in parallel to each other in the stretched state. The diaper 1 may be provided with an appropriate number of rubber threads 4CL and 4CR determined according to the elastic force (contraction force) required for design.

The rubber threads 4CL and 4CR are arranged outside the groove-shaped portion 6CH and the groove-shaped portion 7H in the width direction. In the present embodiment, the thread rubbers 4CL and 4CR are arranged in parallel with the groove-shaped portion 6CH and the groove-shaped portion 7H. In the longitudinal direction of the diaper 1, the ends of the rubber threads 4CL and 4CR on the front body region 1F side substantially coincide with the ends of the groove-shaped portion 6CH and the groove-shaped portion 7H on the front body region 1F side. Further, in the longitudinal direction of the diaper 1, the end portion on the back body region 1R side of the thread rubbers 4CL and 4CR is behind the end portion on the front body region 1F side of the groove-shaped portion 6CH and the groove-shaped portion 7H, and the rear body. It is arranged in the middle of the area 1R.

The rubber threads 4CL and 4CR are provided to contract the absorber 6C in the longitudinal direction. Specifically, the thread rubbers 4CL and 4CR are arranged between the cover sheet 4 and the back sheet 5, and are within at least the inseam region 1B of the cover sheet 4 and the back sheet 5 and the stretched thread rubbers 4CL and 4CR. The parts are fixed to each other by gluing or suturing. Therefore, the cover sheet 4, the back sheet 5, and the absorber 6C are contracted in the longitudinal direction by the elastic force of the rubber threads 4CL and 4CR in the contraction direction. The rubber threads 4CL and 4CR are arranged so as to include the inseam region 1B, and it is sufficient that the absorber 6C can be contracted in the longitudinal direction, and the rubber threads 4CL and 4CR extend to either the back sheet 5, the absorber 6C or the top sheet 7. It may be pasted in the state.

A pair of support gathers 10L and 10R are formed in the inseam region 1B by the thread rubbers 4CL and 4CR. The support gathers 10L and 10R support the absorber 6C by lifting it toward the skin surface while the diaper 1 is worn.

Further, the cover sheet 4 is provided with thread rubbers 4SL and 4SR along the longitudinal direction of the thread rubbers 4CL and 4CR to prevent a gap from being formed between the diaper 1 and the wearer's abdominal circumference. The rubber threads 4SL and 4SR are provided at appropriate positions in an appropriate number determined according to the elastic force (contraction force) required for the design of the diaper 1.

Further, in the present embodiment, the absorber 6C includes a first absorbing portion 6CR in which the groove-shaped portion 6CH is formed and a second absorbing portion CF arranged on the front body region 1F side of the first absorbing portion 6CR. Have. The first absorption unit 6CR and the second absorption unit 6CF are adjacent to each other in the longitudinal direction of the diaper 1. The groove-shaped portion 6CH exists in the first absorbing portion 6CR, and the groove-shaped portion 6CH is not formed in the second absorbing portion 6CF.

The second absorbing portion 6CF is arranged on the front body region 1F side of the first absorbing portion 6C. Therefore, the second absorbing portion 6CF is arranged in a region virtually extended to the front body region 1F side along the extending direction of the groove-shaped portion 6CH. That is, the second absorbing portion 6CF is arranged in the region where the fold can be widened along the groove-shaped portion 6CH. The basis weight of the absorber 6C is adjusted for each region in order to relatively reduce the drag force of the second absorbing portion 6CF against bending along the groove-shaped portion 6CH. In order to facilitate the maintenance of the bent holding structure, the basis weight of the second absorbing portion CF is smaller than that of the first absorbing portion 6CR. For example, by reducing the amount of the molding material laminated in the second absorbing portion 6CF as compared with the first absorbing portion 6CR, the basis weight amount in each absorbing portion can be adjusted. In this case, the second absorbing portion 6CF has a smaller dimension in the thickness direction than the first absorbing portion 6CR excluding the groove-shaped portion 6CH.

Further, if a molding material having a smaller specific gravity is used for the second absorption portion 6CF than for the first absorption portion 6CR, the basis weight can be adjusted while forming each absorption portion with the same thickness. In this case, the density of the second absorption unit 6CF is lower than that of the first absorption unit 6CR. The "Metsuke amount" is the mass per unit area, and the "density" is the mass per unit volume.

In this way, by making the basis weight of the second absorbing portion 6CF smaller than that of the first absorbing portion 6CR, the drag force against bending in the second absorbing portion 6CF can be suppressed, and the groove-shaped portion 6CH and the groove-shaped portion 7H can be formed. The absorber 6C can be easily bent along the line.

Further, when the groove-shaped portion 6CH and the groove-shaped portion 7H are formed by pressing the absorber 6C, the rigidity is formed in the region on the non-skin surface side of the groove-shaped portion 6CH and the groove-shaped portion 7H in the first absorbing portion 6CR. Is enhanced. Therefore, the first absorbing portion 6CR is reinforced in the longitudinal direction by the groove-shaped portion 6CH and the groove-shaped portion 7H, and the formation of a fold extending in the width direction is suppressed by the first absorbing portion 6CR. This makes it easier to bend the inseam region 1B into a predetermined shape.

Further, since the inseam region 1B of the diaper 1 is arranged so as to face the excretion site of the wearer, the amount of absorption required by the absorber 6C is larger than that of the front body region 1F and the back body region 1R. .. The first absorbing portion 6CR arranged including the inseam region 1B has a larger basis weight than the second absorbing portion 6CF, and therefore has a larger absorbing amount than the second absorbing portion 6CF. In this way, the first absorbing portion 6CR and the second absorbing portion 6CF having the required absorption amount can be arranged for each portion of the absorber 6C, and the wearing feeling can be improved.

Further, in the diaper 1 of the present embodiment, as described above, the front patch 2F is provided in the front body region 1F. The front patch 2F exerts a function as a hook-and-loop fastener to which the tapes 2L and 2R can be attached, and a plastic film has a fine loop for hooking a fine hook provided on the tapes 2L and 2R. It is formed of fine threads that are adhered vertically and horizontally to the surface of the. The loop of the front patch 2F is formed, for example, by adhering fine lattice-shaped polyester fiber threads to the surface of a plastic film with a polyurethane adhesive. Examples of the plastic film of the front patch 2F include plastic films of polyolefin, polyester, vinyl chloride, and other various materials. The front patch 2F may have ventilation holes and be breathable. Further, a non-woven fabric may be used for the front patch 2F.

Here, the front body area 1F on which the front patch 2F is provided will be described in more detail. FIG. 5 is a plan view of the stretched diaper 1 as viewed from the non-skin surface side. The diaper 1 according to the present embodiment is arranged on the front body region 1F on a pair of virtual lines 41L, 41R in which the pair of groove-shaped portions 6CH, 7H are extended toward the front body region 1F side in the longitudinal direction. It has a pair of wrinkled portions SL and SR formed on the seat member and extending in the longitudinal direction. In other words, the wrinkled portions SL and SR are arranged along the groove-shaped portions 6CH and 7H along the lines where the folds can be widened. As a result, the diaper 1 can prevent the front body region 1F from obstructing the bending of the absorber 6C in the inseam region 1B, and can bend the absorber 6C in the worn state. Therefore, the diaper 1 can improve the wearing feeling.

Further, when the absorber is bent to a region corresponding to the lower abdomen or the buttocks, the absorber may swell toward the skin surface side in the region, and the skin of the lower abdomen may rub against the absorbent article. For this reason, it is preferable to form a groove-shaped portion that serves as a bending line of the absorber in the inseam region so that the absorber does not bend to the front body region corresponding to the lower abdomen and the back body region corresponding to the buttocks. However, in this configuration, the groove-shaped portion becomes relatively short with respect to the absorber, and the absorber becomes difficult to bend. Further, since the front patch is provided in the front body region of the tape-type absorbent article, the drag in the front body region against bending along the groove-like portion becomes relatively large. For example, when attaching an absorbent article to the wearer, it is common to pinch the front body area by hand and bend the absorber along the wearer's skin, but the front body with a front patch is provided. If the drag force against bending in the region is relatively large, the bending of the absorber in the inseam region is hindered, and the absorber may not bend in the worn state.

On the other hand, the diaper 1 according to the present embodiment has a pair of wrinkled portions SL, SR on a pair of virtual lines 41L, 41R and extending in the longitudinal direction. In the diaper 1, since the wrinkled portions SL and SR are arranged on the line where the folds can be widened along the groove-shaped portion 6CH and the groove-shaped portion 7H, the bending of the absorber 6C in the inseam region 1B can be bent in the front body region 1F. It is possible to bend the absorber 6C in the wearing state, thereby improving the wearing feeling. The pair of wrinkled portions SL and SR are arranged so as to include at least a region overlapping the front patch 2F when viewed in the thickness direction of the diaper 1. As a result, the diaper 1 can reduce the drag force in the front body region 1F against bending along the groove-shaped portions 6CH and 7H, and can easily bend the absorber 6C in the inseam region 1B.

Here, the formation mode of the wrinkled portions SL and SR will be described with reference to FIGS. 6 to 8. FIG. 6 is a plan view of the stretched diaper 1 as viewed from the non-skin surface side, and is a diagram showing a first mode of forming the wrinkled portions SL and SR. In the first forming mode, the wrinkled portions SL and SR are formed by an adhesive applied to the sheet member. In FIG. 6, the coating areas 33L and 33R of the adhesive are shown by solid lines. Hot melt is used as the adhesive. Here, the seat member may be any seat member as long as it is a seat member arranged on the front body region 1F. In the present embodiment, the cover sheet 4 and the back sheet 5 are wrinkled along the application areas 33L and 33R by applying the hot melt to the skin surface side of the cover sheet 4.

FIG. 7 is a plan view of the stretched diaper 1 as viewed from the non-skin surface side, and is a diagram showing a second form of forming the wrinkled portions SL and SR. In the second forming mode, the wrinkled portions SL and SR are formed by embossed grooves formed in the seat member, wherein the seat member is any seat member arranged in the front body region 1F. It may be a sheet member of. In the present embodiment, the wrinkled portions SL and SR are formed on the top sheet 7 by the embossed grooves 34L and 34R formed by pressing (squeezing) the top sheet 7 from the skin surface side to be recessed (embossed). There is.

FIG. 8 is a plan view of the stretched diaper 1 as viewed from the non-skin surface side, and is a diagram showing a third form of forming the wrinkled portions SL and SR. In the third forming mode, the wrinkled portions SL and SR are formed by thread rubbers 35L and 35R (an example of an "elastic member") attached to the seat member in a stretched state. Any seat member may be used as long as it is a seat member arranged on the front body region 1F. In the present embodiment, the wrinkled portions SL and SR are formed on the back sheet 5 by the thread rubbers 35L and 35R attached to the skin surface side of the back sheet 5 in a stretched state.

In this way, the wrinkled portions SL and SR can be formed. The above-mentioned first to third formation modes can be appropriately selected or combined with each other. Further, in addition to the first to third forming modes, the sheet member may be formed into a film by ultrasonic waves to form wrinkled portions SL and SR. The diaper 1 has wrinkled portions SL and SR arranged on a line along which the folds can be widened along the groove-shaped portions 6CH and 7H, so that the front body region 1F inhibits the bending of the absorber 6C in the inseam region 1B. The absorber 6C can be bent in the mounted state. Thereby, the diaper 1 can improve the wearing feeling.

Next, the details of the inseam region 1B in the wearing state of the diaper 1 according to the present embodiment will be described. FIG. 9 is a cross-sectional view of the inseam region 1B of the diaper 1 in the worn state when the center in the longitudinal direction is cut along the width direction. As shown in FIG. 9, when the diaper 1 is worn, the inseam region 1B is bent into a predetermined shape. Specifically, the cross section in the width direction of the inseam region 1B is bent into a W-shaped predetermined shape. Of the two V-shaped portions constituting the "W" shape, the left side is the V-shaped portion 12L and the right side is the V-shaped portion 12R. In addition, the fold that folds on the skin side is a mountain fold, and the fold that folds on the non-skin side is a valley fold.

In the mounted state, the groove-shaped portion 6CH and the groove-shaped portion 7H form a crease to form a valley fold in the inseam region 1B. Specifically, two valley folds are formed by making a valley fold in the inseam region 1B with the two groove-shaped portions 6CH and the groove-shaped portion 7H as folds. Then, two groove-shaped portions 6CH and groove-shaped portions 7H are located at portions corresponding to the respective corners of the V-shaped portions 12L and 12R. In the inseam region 1B at this time, the intermediate portion in the width direction of the two groove-shaped portions 6CH and the groove-shaped portion 7H is mountain-folded in an inverted V shape, and the center in the width direction is a fold. In the inseam region 1B bent into a predetermined shape in this way, support gathers 10L and 10R formed of rubber threads 4CL and 4CR are arranged on the outer sides of the V-shaped portions 12L and 12R in the width direction, respectively. The rubber threads 4CL and 4CR contract the absorber 6C in the longitudinal direction, and the inseam region 1B is lifted toward the skin surface as a whole. By contracting the absorber 6C in the longitudinal direction by the rubber threads 4CL and 4CR, the absorber 6C is lifted toward the skin surface side to hold the bending of the absorber 6C at the groove-shaped portion 6CH and the groove-shaped portion 7H. Can be done. Further, as described above, the diaper 1 includes a front patch 2F which is arranged so as to face each other with a pair of virtual lines 41L and 41R extending in a pair of groove-shaped portions 6CH and 7H in the width direction. As a result, the diaper 1 can relatively reduce the drag force in the front body region 1F against bending along the groove-shaped portions 6CH and 7H, and can bend the absorber 6C in the inseam region 1B in the worn state. can. Thereby, the diaper 1 can improve the wearing feeling.

Further, since the support gathers 10 and the rubber threads 4CL and 4CR are arranged outside the pair of groove-shaped portions 6CH and the groove-shaped portion 7H in the width direction, the width direction of the valley fold in the groove-shaped portion 6CH and the groove-shaped portion 7H The first absorbing portion 6CR can be urged to be lifted toward the skin surface side from the outside, and the bending of the absorber 6C can be held.

Further, if the size of the second absorbing portion 6CF is smaller than that of the first absorbing portion 6CR in the thickness direction, the bulkiness of the diaper 1 in the front body region 1F can be suppressed. Therefore, it is possible to improve the tactile sensation and wearability of the wearer on the abdomen. Further, by improving the gripability (easiness of gripping) of the front body region 1F, the wearability of the diaper 1 is improved. If the density of the second absorption unit 6CF is lower than that of the first absorption unit 6CR, the second absorption unit 6CF can be deformed more smoothly than the first absorption unit 6CR. Therefore, the absorber 6C can be bent in the mounted state, and the followability of the second absorber 6CF to the wearer can be improved.

<Embodiment 2>
Next, the diaper 1 according to the second embodiment will be described. The same components as those of the diaper 1 according to the above embodiment are designated by the same reference numerals, and the description thereof will be omitted. FIG. 10 is a plan view of the stretched diaper 1 as viewed from the non-skin surface side. In this embodiment, the diaper 1 includes a pair of front patches 2FL and 2FR. The pair of front patches 2FL and 2FR are arranged so as to face each other with the pair of groove-shaped portions 6CH and 7H facing each other with the pair of virtual lines 41L and 41R extending toward the longitudinal direction of the diaper 1 on the front body region 1F side. There is. In other words, the front patch is not arranged between the virtual lines 41L and 41R, and the front patches 2FL and 2FR are arranged on both sides in the width direction of the diaper 1 with the pair of virtual lines 41L and 41R sandwiched between them. The diaper 1 according to the present embodiment further prevents the front body region 1F from obstructing the bending of the absorber 6C in the inseam region 1B, and makes it easier to bend the absorber 6C in the wearing state, so that the wearing feeling is further improved. can do.

<Other Embodiments>
Next, other embodiments will be described. The basis weight of the region overlapping the virtual lines 41L and 41R in the thickness direction of the second absorption unit 6CF may be smaller than the basis weight of the first absorption unit 6CR. That is, the basis weight of the second absorbing portion 6CF may be suppressed in a part of the second absorbing portion 6CF instead of the entire region. In this case, the absorber 6C can be bent into a predetermined shape while ensuring the amount of liquid absorbed by the second absorbing portion 6CF.

Further, the thread rubbers 4CL and 4CR are not limited to those provided symmetrically in the width direction, and may extend in the longitudinal direction along the center in the width direction. In this case, the diaper 1 can be easily bent along the center line C in the width direction, and the comfort of the wearer can be improved. Further, the rubber threads 4CL and 4CR may be arranged at positions where they overlap the groove-shaped portion 6CH and the groove-shaped portion 7H in a plan view, or are arranged inside the groove-shaped portion 6CH and the groove-shaped portion 7H in the width direction. May be good.

Further, the groove-shaped portion 6CH and the groove-shaped portion 7H may be provided in a part of the front body region 1F or the back body region 1R. Instead of or in addition to the groove-shaped portion 6CH and the groove-shaped portion 7H, the absorber 6C of the corresponding portion may be lightened, or the groove-shaped portion penetrating may be recessed in the absorber 6C. Further, the absorber 6C and the groove-shaped portion 7H may be provided on the non-skin surface side of the absorber 6C, or may be provided on the skin surface side and the non-skin surface side of the absorber 6C. The front patch 2F may be laminated so as to overlap at least a part of the second absorbing portion 6CF (at least a part overlaps in a plan view).

Further, the first absorbing portion may be arranged in the inseam region 1B, and the second absorbing portion may be arranged in the front body region 1F and the back body region 1R. That is, in the absorber 6C, the second absorbing portions may be arranged on both sides in the longitudinal direction with respect to the first absorbing portion. In this case, the absorber 6C can be further easily bent into a predetermined shape, the molding material of the absorber 6C can be further reduced, the material cost can be reduced, and the diaper 1 can be made lighter.

Further, in the present embodiment, the absorber 6C in which the first absorption unit 6CR and the second absorption unit 6CF are integrally formed is used, but the present invention is not limited to this, and the first absorption unit 6CR is used in the absorber 6C. And the second absorbing portion 6CF may be formed separately. Further, instead of the above-mentioned thread rubber, natural rubber, elastic film, or the like can be used. The seat member arranged in the front body area 1F may be a sheet member arranged only in the front body area 1F, or may be a sheet member arranged including the front body area 1F. good.

In the above embodiment, the tape-type disposable diaper 1 has been exemplified, but examples of the absorbent article to which the above configuration can be applied include pants-type disposable diapers, urine pads, and the like. These absorbent articles predecessor to an absorber arranged to include an inseam region, a pair of grooved portions extending in the longitudinal direction and formed at least in the inseam region of the absorber, and a pair of grooved portions. A pair of imaginary lines extending in the longitudinal direction on the roller region side, formed on a seat member arranged in the front body region, and a pair of wrinkles extending in the longitudinal direction are provided in a mounted state. The absorber can be bent into a predetermined shape in the above, and the wearing feeling can be improved.

1 ・ ・ Diaper 1B ・ ・ Inseam area 1F ・ ・ Front body area 1R ・ ・ Back body area 2FL, 2FR ・ ・ Front patch 2FT ・ ・ Vent holes 2L, 2R ・ ・ Tape 3BL, 3BR ・ ・ Three-dimensional gather 3R ・ ・ West Gather 4 ・ ・ Cover sheet 4KL, 4KR ・ ・ Constriction 5 ・ ・ Back sheet 6C ・ ・ Absorber 6CH ・ ・ Groove 7 ・ ・ Top sheet 7H ・ ・ Groove 8 ・ ・ Side sheet 4CKL, 8KR ・ ・ Constriction 4CL, 4CR, 4SL, 4SR, 8EL, 8ER, 9ER ... Thread rubber 10 ... Support gather 12L, 12R ... V-shaped part 33L, 33R ... Coating area SL, SR ... Wrinkle part 34L, 34R ... Embossed Groove 35L, 35R ... Thread rubber 41L, 41R ... Virtual line

Claims (10)

An absorbent article in which the front body region located on the abdominal side of the wearer, the inseam region located on the inseam side, and the back body region located on the back side are provided in this order in the longitudinal direction at the time of wearing.
An absorber arranged including the inseam region and
A pair of groove-like portions extending in the longitudinal direction and formed at least in the inseam region of the absorber.
A pair of imaginary lines extending in the longitudinal direction from the pair of groove-shaped portions toward the front body region, formed on a sheet member arranged in the front body region, and extending in the longitudinal direction. Wrinkles and
An absorbent article comprising. The pair of wrinkles are formed by an adhesive applied to the sheet member.
The absorbent article according to claim 1. The pair of wrinkles are formed by embossed grooves formed in the sheet member.
The absorbent article according to claim 1. The pair of wrinkles are formed by an elastic member attached to the sheet member in an extended state.
The absorbent article according to claim 1. A front sheet that is joined to an exterior sheet that forms the exterior surface of the absorbent article in the front body region and to which a tape for fixing the absorbent article to the wearer is attached.
The tape, which is projected from the back body region on both sides in the width direction and is attached to the front seat, for fixing the absorbent article around the wearer's waist.
The absorbent article according to any one of claims 1 to 4. When viewed in the thickness direction, the pair of wrinkles are arranged so as to include at least a region overlapping the front sheet.
The absorbent article according to claim 5. The front sheet is a hook-and-loop fastener in which loops engaging with hooks formed on the surface of the tape are arranged on the surface.
The absorbent article according to claim 5 or 6. The absorber is
The first absorbing portion in which the pair of groove-shaped portions are formed, and the first absorbing portion.
A second absorbing portion which is arranged closer to the front body region than the first absorbing portion and has a smaller basis weight than the first absorbing portion.
Have,
The absorbent article according to any one of claims 1 to 7. A pair of elastic members arranged including at least the inseam region, extending in the longitudinal direction at a position overlapping the absorber in the thickness direction, and attached in an extended state.
The absorbent article according to any one of claims 1 to 8. A liquid-permeable top sheet arranged on the skin surface side of the absorber is provided.
The groove-shaped portion is formed on the absorber and the top sheet.
The absorbent article according to any one of claims 1 to 9.

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