JP2022042475A - Absorbent article - Google Patents

Abstract

To provide an absorbent article capable of suppressing liquid leakage and improving wearing feeling.SOLUTION: An absorbent article comprises: an absorber; a skin surface side sheet arranged on a skin surface side of the absorber; and a non-skin surface side sheet arranged on a non-skin surface side of the absorber. The absorber has: a first end side which is arranged on one end part side in a longitudinal direction and extends in a width direction; a pair of second end sides each of which is provided on one/the other of both outsides in a width direction of the first end sides, and extends in the longitudinal direction; and a third end side which connects the first end side and the second end sides on a center side of the absorber relative to a first virtual line obtained by extending the first end side and second virtual lines obtained by extending the second end sides. The absorbent article has a stretchable area arranged on one end part side of the longitudinal direction.SELECTED DRAWING: Figure 7

Description

The present invention relates to an absorbent article.

Absorbent articles that absorb liquids such as urine and body fluids discharged by the wearer are known (for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2019-97871

The absorbent article is provided with waist gathers to bring it into close contact with the wearer's waistline. The absorbent article may be in close contact with the wearer's waistline as the waist gather contracts around the wearer's waistline.

The radius of curvature of the wearer's waistline is larger near the ilium than on the back side, and the absorbent article can be brought into close contact with the wearer's waistline near the ilium to improve the suppression of liquid leakage. However, in the absorbent article, the absorber end is located at the portion corresponding to the vicinity of the ilium around the wearer's waist, and when the portion of the absorbent article is contracted, the absorber end is also contracted. As a result, the end of the absorber may become stiff and the wearing feeling may be deteriorated.

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

In order to solve the above problems, in the present invention, an elastic region arranged on one end side in the longitudinal direction of the absorbent article is provided.

In particular, the present invention provides absorptive properties in which the front body region located on the abdominal side of the wearer, the inseam region located on the inseam, and the back body region located on the back side are provided in this order in the longitudinal direction in the worn state. An article, an absorber arranged from the front body region to the back body region, and a skin surface arranged on the skin surface side of the absorber and formed longer in the longitudinal direction than the absorber. The side sheet and the non-skin surface arranged on the non-skin surface side of the absorber and formed longer in the longitudinal direction than the absorber and wider in the width direction orthogonal to the longitudinal direction than the absorber. A side sheet is provided, and the absorber is arranged on one end side in the longitudinal direction and extends on the one end side extending in the width direction and on both outer sides in the width direction from the first end side. A pair of arranged second end sides, the pair of second end sides extending in the longitudinal direction, the first virtual line extending the first end side, and the second end side extending. The absorbent article has a third end side connecting the first end side and the second end side on the center side of the absorber with respect to the virtual line, and the absorbent article is on the one end side in the longitudinal direction. An elastic member arranged in the same direction and extended in the width direction, including an elastic member bonded to at least one of the skin surface side sheet or the non-skin surface side sheet in an extended state, and the skin surface side. A stretchable region is provided for stretching and contracting at least one of the sheet or the non-skin surface side sheet in the width direction, and the stretchable region is a first stretchable region arranged inside a third virtual line extending the third end side. And, it is arranged between the third virtual line and the second virtual line, the second expansion / contraction region having a degree of contraction larger than the first expansion / contraction region, and the second expansion / contraction region outside the width direction of the second virtual line. It has a third stretchable region having a degree of shrinkage larger than that of the second stretchable region.

In the absorbent article, the first stretchable region, the second stretchable region, and the third stretchable region may be arranged on the end side in the longitudinal direction with respect to the first one end side.

In the absorbent article, it is a first elastic member arranged on the end side in the width direction of the third end side and extended in the width direction, and is in a stretched state on the non-skin surface side sheet. It may include a first elastic member bonded to the skin, and may include at least a first expansion / contraction portion for expanding / contracting the non-skin surface side sheet in the width direction.

In the absorbent article, the first elastic member may extend to the vicinity of the third end side.

In the absorbent article, the first stretchable portion may have a larger degree of shrinkage than the second stretchable region.

The absorbent article is arranged in the back body region, and is connected to each of a pair of side flap portions extending outward in the width direction from the absorber and the pair of side flap portions, and the front body. A tape for fixing the absorbent article around the wearer's waist while being attached to the region is provided, and the one end side in the longitudinal direction may be the back body region side.

According to the present invention, it is possible to improve the wearing feeling while suppressing liquid leakage.

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 the non-wearing diaper according to the first embodiment when the center in the longitudinal direction is cut along the width direction. FIG. 4 is a plan view of the stretched diaper according to the first embodiment as viewed from the skin surface side. FIG. 5 is an enlarged view of the back body region side of the diaper absorber according to the first embodiment. FIG. 6 is a plan view of the stretched diaper according to the second embodiment as viewed from the skin surface side. FIG. 7 is an enlarged view of the back body region of the stretched diaper according to the second embodiment.

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 tape-type disposable diaper (an example of the "absorbent article" in the present application, hereinafter simply referred to as "diaper") faces the front body and the back, which are arranged facing the wearer's abdomen. The direction connecting the back body to be arranged is the longitudinal direction. 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 part 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 surface side, which is the opposite of the skin surface side. The 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 has an inseam area 1B, which is a part corresponding to the inseam covering the wearer's pubic area in the worn state, and a front body area 1F, which is located on the front side of the inseam area 1B and corresponds to the wearer's front body. It is located behind the inseam region 1B and has a back body region 1R which is a portion corresponding to the back body of the wearer. Tapes 2L and 2R that can be attached to the front patch 2F provided on the non-wearer side surface of the front body area 1F are provided on the left and right edges of the back body area 1R. The diaper 1 is worn when the tapes 2L and 2R are attached to the front patch 2F with the front body area 1F placed on the ventral side of the wearer and the back body area 1R placed on the back side of the wearer. It is fixed to the wearer's body while surrounding the person's abdomen 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 mainly arranged in the vicinity of 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, the portion surrounding the wearer's leg circumference (thigh) is formed. Leg gathers 3AL and 3AR are provided, three-dimensional gathers 3BL and 3BR are provided inside the width direction of the diaper 1 with respect to the leg gathers 3AL and 3AR, and waist gathers 3R are provided at a portion surrounding the wearer's abdomen. The leg gathers 3AL, 3AR, three-dimensional gathers 3BL, 3BR and waist gather 3R are in close contact with the wearer's skin due to the elastic force of the elastic member. Therefore, the liquid discharged from the wearer's genital area is absorbed by the diaper 1 absorber without leaking from the diaper 1. As the elastic member, a thread-shaped or band-shaped rubber or the like can be appropriately selected.

FIG. 2 is an exploded perspective view of the diaper 1. Further, 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. In FIG. 4, the alternate long and short dash line C1 is a center line representing the center of the diaper 1 in the width direction. In FIG. 4, the elastic members 4C, 4SR, 4SL, 8EL, and 8ER are not shown. The diaper 1 has a cover sheet 4 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 in the portion where the wearer's thigh is located (the leg circumference region 10L and 10R shown in FIG. 4). 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 is a back sheet 5 (an example of the "non-skin surface side sheet" referred to in the present application), a absorber 6C, and a top sheet 7 (“non-skin surface side sheet” referred to in the present application) which are sequentially laminated on the wearer side surface of the cover sheet 4. It has an example of "skin side sheet"). The back sheet 5, the absorber 6C, and the top sheet 7 are all sheet-like members having a substantially rectangular appearance, and are laminated in order on the cover sheet 4 in a state where the longitudinal direction coincides with the longitudinal direction of the cover sheet 4. There is. 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 sheet 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 a sheet-like member 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 thereof. 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 may 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.

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 the longitudinal direction are formed. 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 posture with the abdomen facing down or the posture with the back facing down, the discharged liquid comes into contact with the absorber 6C via the top sheet 7. Will be done.

Further, the diaper 1 is provided so that the elastic members 4SL and 4SR for forming the above-mentioned leg gathers 3AL and 3AR expand and contract in the longitudinal direction of the diaper 1 between the cover sheet 4 and the back sheet 5. The elastic members 4SL and 4SR are provided in an appropriate number (three in the present embodiment) determined according to the elastic force (contraction force) required for the design of the diaper 1. As shown in FIG. 4, the leg gathers 3AL and 3AR are arranged to include the leg circumference regions 10L and 10R, which are the portions where the wearer's thighs are located in the diaper 1 at both ends in the width direction of the inseam region 1B. Has been done. The leg circumference regions 10L and 10R are arranged at both end portions in the width direction of the inseam region 1B. Further, the arrangement areas of the elastic members 4SL and 4SR are the leg gathers 3AL and 3AR.

Further, the diaper 1 has elongated strip-shaped side sheets 8L and 8R. The side sheets 8L and 8R are liquid-impermeable sheets provided on the long side portion of the top sheet 7. Similar to the cover sheet 4, the side seats 8L and 8R are provided with 8KL and 8KR constricted to a portion where the wearer's thigh is located (leg circumference area 10L and 10R shown in FIG. 4). Elastic members 8EL and 8ER for forming the three-dimensional gathers 3BL and 3BR are arranged on the side sheets 8L and 8R along the longitudinal direction. When the diaper 1 is in a mounted state, that is, when the diaper 1 is in a U-shaped side view, the side seats 8L and 8R are pulled in the longitudinal direction by the contraction force of the elastic members 8EL and 8ER and rise from the top sheet 7. , 3B gathers 3BL, 3BR to prevent the outflow of liquid.

In the cover sheet 4, the elastic member 4C that prevents the formation of a gap between the diaper 1 and the wearer's abdominal circumference is inside the width direction of the diaper 1 with respect to the elastic members 4SL and 4SR in the longitudinal direction of the diaper 1. It is provided along with. The elastic member 4C is provided according to the elastic force (contraction force) required for the design of the diaper 1.

Further, the diaper 1 includes elastic members 9L, 9R, 12 in order to form the waist gather 3R described above. The elastic members 9R, 9L, 12 are provided between the back sheet 5 and the top sheet 7 at a position further back from the end portion of the absorber 6C. The elastic members 9L, 9R, 12 are extended between the back sheet 5 and the top sheet 7 so that the expansion / contraction direction is the width direction of the diaper 1. Therefore, when the tapes 2L, 2R provided on the left and right sides of the elastic members 9R, 9L, 12 are attached to the front patch 2F on the ventral side of the wearer, the elastic members 9R, 9L, 12 exert a contraction force. The diaper 1 is brought into close contact with the wearer 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 granular absorbent resins such as SAP (Highly Absorbent Polymer), which is a hydrophilic polymer having a crosslinked structure capable of absorbing and retaining fibers, are 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 looking at the entire absorber 6C from a bird's-eye view, it can be said that the expansion rate of the thickness of the absorber 6C that has absorbed the liquid is not as large as the expansion rate 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.

Further, as shown in FIG. 4, the diaper 1 is arranged in the back body region 1R and includes a pair of side flap portions 11L and 11R extending outward in the width direction of the diaper 1 from the absorber 6C. In the present embodiment, the side flap portions 11L and 11R are joined to the cover sheet 4 forming the exterior surface of the diaper 1 and the skin surface side of the cover sheet 4, and the side sheets 8L for forming the three-dimensional gathers 3BL and 3BR. , 8R, and so on. Further, the diaper 1 is connected to each of the pair of side flap portions 11L and 11R, and is attached to the front patch 2F arranged on the front body area 1F to fix the diaper 1 around the wearer's waist. It is equipped with tapes 2L and 2R.

Further, as shown in FIG. 4, the absorber 6C is arranged from the front body region 1F to the back body region 1R. The top sheet 7 arranged on the skin surface side of the absorber 6C is formed longer than the absorber 6C in the longitudinal direction of the diaper 1. Further, the backsheet 5 arranged on the non-skin surface side of the absorber 6C is formed to be longer in the longitudinal direction of the diaper 1 than the absorber 6C and wider in the width direction of the diaper 1 than the absorber 6C. There is. Both ends of the top sheet 7 and the back sheet 5 in the longitudinal direction coincide with both ends of the diaper 1 in the longitudinal direction. The top sheet 7 is formed wider in the width direction of the diaper 1 than the absorber 6C, but the top sheet 7 is formed in the same width as the absorber 6C, and the widthwise end thereof is the absorber. It may be arranged so as to coincide with the widthwise end of 6C. In this case, each end of the top sheet 7 in the width direction may be joined to the side sheets 8L and 8R.

Here, with reference to FIG. 5, the end portion of the absorber 6C on the rear body region 1R side will be described in detail. FIG. 5 is an enlarged view of the back body region 1R side of the absorber 6C as seen from the skin surface side. The absorber 6C is arranged on the back body region 1R side in the longitudinal direction of the diaper 1 (an example of the "one end side" in the present application), and has a first end side 6CE extending in the width direction of the diaper 1. The first end side 6CE is the end side of the absorber 6C on the rear body region 1R side. Further, the absorber 6C is a pair of second end sides 6CL, 6CR arranged on both outer sides in the width direction of the diaper 1 with respect to the first end side 6CE, and is a pair extending in the longitudinal direction of the diaper 1. It has 6CL and 6CR on the second end side. The second end sides 6CL and 6CR define the widthwise end of the absorber 6C on the back body region 1R side. The absorber 6C has a gourd shape in which the central portion in the longitudinal direction is recessed toward the center in the width direction in a plan view, and the second end sides 6CL and 6CR are generally outside the recessed portion in the width direction. It is formed in a straight line. The absorber 6C may have a rectangular shape in which the second end sides 6CL and 6CR form a long side. Further, the absorber 6C has a first end end on the center side of the absorber 6C rather than the first virtual line 6VE extending the first end side 6CE and the second virtual line 6VL, 6VR extending the second end sides 6CL and 6CR. It has third end sides 6CNL and 6CNR connecting the side 6CE and the second end sides 6CL and 6CR. The contour of the absorber 6C on the back body region 1R side is defined by the first end side 6CE, the second end side 6CL, 6CR, and the third end side 6CNL, 6CNR. In the present embodiment, the third end sides 6CNL and 6CNR are formed in a straight line, but may be formed in a curved shape.

Next, returning to FIG. 4, the rear body region 1R side of the diaper 1 will be described in more detail. The diaper 1 is arranged on the end side of the diaper 1 on the third end side 6CNL, 6CNR in the width direction, and the first expansion / contraction portion 20L, 20R including the first elastic members 9L, 9R extending in the width direction. To prepare for. The first elastic members 9L and 9R are arranged between the back sheet 5 and the top sheet 7 and the side sheets 8L and 8R, and are adhered to at least the back sheet 5 in an extended state. As a result, the first expansion / contraction portions 20L and 20R can expand / contract at least the back sheet 5 in the width direction of the diaper 1. In this embodiment, since the top sheet 7 and the side seats 8L and 8R are joined to the back sheet 5, the top sheet 7 and the side seats 8L and 8R are also expanded and contracted by the first expansion and contraction portions 20L and 20R together with the back sheet 5. Will be done. In the present embodiment, strip-shaped members (sheet-shaped members) are used as the first elastic members 9L and 9R, and the first elastic members 9L and 9R extend to the vicinity of the third end side 6CNL and 6CLR. is doing. A plurality of rubber threads may be used for the first elastic members 9L and 9R.

In the diaper 1 according to the present embodiment, the waist gather 3R is configured to include the first expansion / contraction portions 20L and 20R. The first telescopic portions 20L and 20R are arranged at a portion corresponding to the vicinity of the ilium where the radius of curvature becomes large around the wearer's waist. Therefore, the diaper 1 according to the present embodiment can be brought into close contact with the vicinity of the ilium around the wearer's waist by the first telescopic portions 20L and 20R, whereby between the diaper 1 and the wearer's abdominal circumference. It is possible to prevent the formation of gaps and suppress liquid leakage. Further, the first expansion / contraction portions 20L and 20R are formed to include the first elastic members 9L and 9R arranged on the widthwise end side of the diaper 1 of the third end sides 6CNL and 6CNR of the absorber 6C. .. The third end sides 6CNL and 6CNR are closer to the center side of the absorber 6C so as not to be affected by the expansion and contraction by the first expansion and contraction portions 20L and 20R. As a result, in the diaper 1 according to the present embodiment, the end portion of the absorber 6C can be arranged so as not to be affected by the expansion and contraction by the first expansion / contraction portions 20L and 20R, so that the end portion of the absorber 6C contracts. It is possible to improve the wearing feeling by preventing the absorber 6C from shrinking and suppressing the hardening due to the contraction of the end portion of the absorber 6C. As described above, the diaper 1 according to the present embodiment can improve the wearing feeling while suppressing liquid leakage.

Further, the diaper 1 according to the present embodiment includes a second elastic member 12 which is arranged on the back body region 1R side of the first end side 6CE of the absorber 6C and extends in the width direction of the diaper 1. (Ii) The telescopic portion 21 is provided. The second elastic member 12 is arranged between the back sheet 5 and the top sheet 7 and is adhered to at least the back sheet 5 in an stretched state. As a result, the second expansion / contraction portion 21 can expand / contract the back sheet 5 in the width direction of the diaper 1. In this embodiment, since the top sheet 7 is joined to the back sheet 5, the top sheet 7 is also expanded and contracted by the second expansion and contraction portion 21 together with the back sheet 5. In the present embodiment, a sheet-shaped member (strip-shaped member) is used as the second elastic member 12. In addition, a plurality of (for example, two) thread rubbers may be used for the second elastic member 12.

In the diaper 1 according to the present embodiment, the waist gather 3R is configured to include the second expansion / contraction portion 21. The second telescopic portion 21 is arranged at a portion corresponding to the dorsal side in the waist circumference of the wearer. Therefore, the diaper 1 according to the present embodiment can be brought into close contact with the back side of the wearer's waist circumference by the second telescopic portion 21, thereby forming a gap between the diaper 1 and the wearer's abdominal circumference. It can be prevented from being diapered and liquid leakage can be suppressed.

Further, in the diaper 1 according to the present embodiment, the first expansion / contraction portions 20L and 20R have a larger expansion / contraction force than the second expansion / contraction portion 21. The elastic force can be adjusted by adjusting the thickness, the expansion ratio, and the number of the first elastic members 9L and 9R and the second elastic member 12. In the present embodiment, the same sheet-shaped members are used for the first elastic members 9L and 9R and the second elastic members 12. When thread rubber is used for the first elastic members 9L and 9R and the second elastic member 12, the elastic force can be adjusted by the number of thread rubbers.

Further, in the diaper 1 according to the present embodiment, the first telescopic portions 20L and 20R have a longer length in the longitudinal direction of the diaper 1 than the second telescopic portion 21. Here, the length of each elastic member in the longitudinal direction of the diaper 1 is the length of the arrangement region of each elastic member in the longitudinal direction. When the same thread rubber is used for the first elastic member 9L, 9R and the second elastic member 12, the thread rubbers are arranged in parallel with each other at a predetermined interval, so that the first expansion / contraction portions 20L, 20R are the first. (Ii) The number of rubber threads is larger than that of the telescopic portion 21.

Further, the second expansion / contraction portion 21 is arranged at a predetermined distance from the first end side 6CE of the absorber 6C. As a result, the expansion and contraction of the second expansion and contraction portion 21 affects the absorber 6C, and the expansion and contraction of the absorber 6C in the width direction of the diaper 1 can be suppressed.

<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. 6 is a plan view of the stretched diaper 1 as viewed from the skin surface side. FIG. 7 is an enlarged view of the rear body region 1R side of FIG. In FIGS. 6 and 7, the elastic members 4C, 4SR, 4SL, 8EL, and 8ER are not shown.

The diaper 1 according to the present embodiment includes an elastic region 23 including an elastic member 22 arranged on the back body region 1R side and extending in the width direction of the diaper 1. The elastic member 22 is arranged between the back sheet 5 and the top sheet 7 and is adhered to at least the back sheet 5 in an stretched state. As a result, the expansion / contraction region 22 can expand / contract the back sheet 5 in the width direction of the diaper 1. In this embodiment, since the top sheet 7 is joined to the back sheet 5, the top sheet 7 is included in the expansion / contraction region 23 together with the back sheet 5. The elastic member 22 may be joined to at least one of the back sheet 5 and the top sheet 7. In this embodiment, a plurality of (for example, two) rubber threads are used for the elastic member 22. A sheet-shaped elastic member 22 (strip-shaped) may be used.

As shown in FIG. 7, the expansion / contraction region 23 includes the first expansion / contraction region 23A arranged inside the third virtual lines 6CL and 6CR extending the third end sides 6CNL and 6CNR, and the third virtual lines 6CL and 6CR. It has a second expansion / contraction region 23B arranged between the second virtual line 6VL and 6VR, and a third expansion / contraction region 23C arranged outside the width direction of the second virtual line VL and VR. In the present embodiment, the elastic member 22 of the expansion / contraction region 23 extends in the width direction of the diaper 1 across the first expansion / contraction region 23A, the second expansion / contraction region 23B, and the third expansion / contraction region 23C. .. The expansion / contraction region 23 has a first expansion / contraction region 23A and a second expansion / contraction region 23B instead of the elastic member 22 straddling the first expansion / contraction region 23A, the second expansion / contraction region 23B, and the third expansion / contraction region 23C. An elastic member extended for each region with the third telescopic region 23C may be included.

The first expansion / contraction region 23A is arranged between the third virtual lines 6CL and 6CR, and is affected by the absorber 6C having higher rigidity than the top sheet 7 and the back sheet 5 when expanding / contracting. Compared with the region 23B and the third expansion / contraction region 23C, there is almost no contraction. The degree of contraction of the first expansion / contraction region 23A is about 90%, and the first expansion / contraction region 23A has a smaller degree of contraction than the second expansion / contraction region 23B. The degree of contraction of each stretchable region is a value obtained by dividing the length of each stretchable region in the natural state (contracted state) in a stretched state, multiplying by 100, and indicating the percentage.

The second expansion / contraction region 23B has a larger degree of contraction than the first expansion / contraction region 23A, and the degree of contraction is 70.
%. Since the second expansion / contraction region 23B is adjacent to the first expansion / contraction region 23A in the width direction of the diaper, the second expansion / contraction region 23B contracts in a state of being brought closer to the center side in the width direction of the diaper 1. Further, since the absorbent body 6 is not arranged in the elastic region 23, the elastic region 23 is composed of a top sheet 7, a back sheet 5, and an elastic member 22, which are more rigid than the absorbent body 6C. Is low, so a recess is formed inside the elastic region 23 of the diaper 1 in the longitudinal direction. Further, the distance between the first expansion / contraction region 23A (the elastic member on the inseam region 1B side of the first expansion / contraction region 23A) and the first end side 6CE of the absorber 6C is at least 10 mm or more, preferably about 15 mm to 20 mm. ..

As described above, since the second stretchable region 23B has a certain degree of shrinkage, it has a shape that rises toward the skin surface side of the absorber 6C, and a recess is formed inside the diaper 1 in the stretchable region 23 in the longitudinal direction. Here, both the first expansion / contraction region 23A and the second expansion / contraction region 23B are provided with a sufficient distance (10 mm or more) from the absorber 6C, and the degree of contraction of each expansion / contraction region differs by only about 20. The contraction of the expansion / contraction region 23A and the second expansion / contraction region 23B does not bend the absorber 6C.

Since the third stretchable region 23C is outside the widthwise end of the absorber when the diaper 1 is viewed in the width direction, the degree of contraction is high, for example, about 60%. Further, the third stretchable region 23C is in close contact with the skin surface from the back to the lateral abdomen of the wearer so that a gap is not formed between the skin surface and the diaper 1 when the diaper 1 is worn. As a result, the third expansion / contraction region 23C serves as a starting point for raising the wall portion of the recess formed inside the first expansion / contraction region 23A and the second expansion / contraction region 23B toward the non-skin surface side.

Further, in the diaper 1 according to the present embodiment, the first expansion / contraction portions 20L and 20R are arranged inside the diaper 1 in the longitudinal direction with respect to the third expansion / contraction region 23C. In the present embodiment, a plurality of (for example, 6) thread rubbers are used for the first elastic members 9L and 9R of the first expansion / contraction portions 20L and 20R. The first telescopic portions 20L and 20R extend from the inside of the third telescopic region 23C to the inner end portions of the third end sides 6CNL and 6CNR when the diaper 1 is viewed in the longitudinal direction. The first expansion / contraction portions 20L and 20R have a larger degree of contraction than the second expansion / contraction region 23B, and the contraction of the first expansion / contraction portion 20L and 20R forms a recess formed inside the diaper 1 in the expansion / contraction region 23 in the longitudinal direction. It can be surrounded by the first telescopic portions 20L and 20R from the outside in the width direction. The diaper 1 according to the present embodiment contains moisture, watery stools, etc. that have exuded from the end of the absorber 6C or have flowed on the top sheet 5 in the recesses, and suppresses these from leaking to the outside. can do. As a result, the diaper 1 according to the present embodiment can improve the wearing feeling while suppressing liquid leakage.

<Other embodiments>
Next, other embodiments will be described. In the diaper 1 according to the above embodiment, the side flap portions 11L and 11R are arranged in the back body region 1R, and the tapes 2L and 2R connected to the side flap portions 11L and 11R are attached to the front body region 1F. It is fixed around the wearer's waist in the state, but the diaper 1 is not limited to this. For example, in the diaper 1, the side flap portions 11L and 11R are arranged in the back body region 1R, and the tapes 2L and 2R connected to the side flap portions 11L and 11R are attached to the back body region 1R. It may be fixed around the waist of the person. In this configuration, the first end side 6CE, the second end side 6CL, 6CR, the third end side 6CNL, 6CNR, the first expansion / contraction portion 20L, 20R, the second expansion / contraction portion 21, and the expansion / contraction region 23 of the absorber 6C are , It is arranged on the front body area 1F side of the diaper 1.

1 ... diaper 1B ... inseam area 1F ... front body area 1R ... back body area 2F ... front patch 2L, 2R ... tape 3BL, 3BR ... 3D gather 3R ... waist gather 4 ... cover sheet 4KL , 4KR ... Constriction 4C, 4SL, 4SR, 8EL, 8ER ... Elastic member 5 ... Backsheet 6C ... Absorber 6CE ... First end side 6CL, 6CR ... Second end side 6CNL, 6CNR ... Three-end side 7 ... Top sheet 8 ... Side sheet 9L, 9R ... First elastic member 10L, 10R ... Leg circumference area 11L, 11R ... Side flap part 12 ... Second elastic member 20L, 20R ... First telescopic part 21 ... Second elastic part 22 ... Elastic member 23 ... Telescopic area

Claims (6)

An absorbent article in which the front body region located on the abdomen 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 in the worn state.
Absorbents arranged from the front body region to the back body region,
A skin surface side sheet arranged on the skin surface side of the absorber and formed longer in the longitudinal direction than the absorber.
A non-skin surface side sheet arranged on the non-skin surface side of the absorber and formed longer in the longitudinal direction than the absorber and wider in the width direction orthogonal to the longitudinal direction than the absorber.
Equipped with
The absorber is
A first end side arranged on one end side in the longitudinal direction and extending in the width direction,
A pair of second end edges arranged on both outer sides in the width direction from the first end edge, and a pair of second end edges extending in the longitudinal direction.
A third that connects the first end side and the second end side on the center side of the absorber with respect to the first virtual line extending the first end side and the second virtual line extending the second end side. At the edge,
Have,
The absorbent article is an elastic member arranged on the one end side in the longitudinal direction and extended in the width direction, and extends to at least one of the skin surface side sheet and the non-skin surface side sheet. It comprises an elastic member bonded in a state, and has an elastic region for expanding and contracting at least one of the skin-side sheet or the non-skin-side sheet in the width direction.
The expansion and contraction area is
The first expansion / contraction region arranged inside the third virtual line extending the third end side,
A second stretchable region, which is arranged between the third virtual line and the second virtual line and has a larger degree of contraction than the first stretchable region,
A third stretchable region, which is arranged outside the width direction of the second virtual line and has a larger degree of shrinkage than the second stretchable region,
Have,
Absorbent article. The first stretchable region, the second stretchable region, and the third stretchable region are arranged on the end side in the longitudinal direction with respect to the first one end side.
The absorbent article according to claim 1. The first elastic member arranged on the end side of the third end side in the width direction and extended in the width direction, and the first elastic member adhered to the non-skin surface side sheet in an extended state. A member is included, and at least a first elastic portion for expanding and contracting the non-skin surface side sheet in the width direction is provided.
The absorbent article according to claim 1 or 2. The first elastic member extends to the vicinity of the third end side.
The absorbent article according to claim 3. The first expansion / contraction portion has a larger degree of contraction than the second expansion / contraction region.
The absorbent article according to claim 3 or 4. A pair of side flaps arranged in the back body region and extending outward in the width direction from the absorber.
A tape connected to each of the pair of side flap portions and attached to the front body region to fix the absorbent article around the wearer's waist.
Equipped with
The one end side in the longitudinal direction is the back body region side.
The absorbent article according to any one of claims 1 to 5.

Images