JP2023111752A - absorbent article - Google Patents

Abstract

To provide an absorbent article which enhances the storability of a large-sized inner pad having wide rear width and is useful as an outer.SOLUTION: An absorbent article 50 has a pair of three-dimensional gathers 40 in which a front body 60 to be attached to a wearer's lower abdomen, a crotch part 70 to be attached to a wearer's crotch part, and a bock body 80 to be attached to a wearer's hip are connected in a longer direction, and of which both sides in a width direction extend from the front body 60 to the back body 80 through the crotch part 70. The three-dimensional gathers 40 have a front side three-dimensional gather 48 provided in a front side area 71 and a rear side three-dimensional gather 49 provided in a rear side area 81, and the three-dimensional gathers 40 have root parts 41 fixed to a skin side surface of the absorbent article 50. It is a tape stop type as an outer in which a longer direction dimension ratio between the front side three-dimensional gather 48 and the rear side three-dimensional gather 49 and a width direction interval ratio between the root parts 41 are a prescribed ratio, and a width direction tip interval of the three-dimensional gathers 40 is a prescribed length.SELECTED DRAWING: Figure 1

Description

The present invention relates to absorbent articles.

For severe nursing care, a tape-type disposable diaper is used as an outer layer and a urine absorbing pad is used as an inner layer. In recent years, where labor shortages have become commonplace in nursing care sites, it is difficult to ensure sufficient replacement frequency, so inner pads worn at night, in particular, are becoming more absorbent and larger. Specifically, the width dimension of the buttock region in the longitudinal direction of the inner pad is made larger than that of the other front regions.

In conventional tape-fastened type disposable diapers that are outer, the space at the base of the three-dimensional gathers does not have a sufficient width for the highly absorbent inner pad, making it difficult to accommodate the inner pad. This difficulty in donning puts a burden on the caregiver, and the inability to fix the thick and large inner pad in an appropriate position causes the inner pad to wrinkle, giving the wearer a feeling of oppression and leaks. This is a considerable psychological and physical burden on both caregivers and care recipients who try to alleviate this. Thus, there is a demand for a tape-fastening type disposable diaper that can easily accommodate a large inner pad with a wide rear portion, is easy to put on, does not feel oppressive, and does not easily leak, and various proposals have been made.

Patent Document 1 discloses a front waist region, a back waist region, a crotch region disposed therebetween, a rear stretchable region provided in the back waist region and capable of stretching in the width direction, and a front waist region. and a pair of leak-proof cuffs (three-dimensional gathers) extending between the rear waist region and arranged on both sides across the center in the width direction, and the standing fulcrum of the leak-proof cuffs is on the rear side in the rear waist region. It overlaps with the elastic region in the thickness direction, and the distance between the pair of leak-proof cuffs in the crotch region spreads from the widening start point in the leg area to the rear waist region, and the distance between the pair of leak-proof cuffs in the rear waist region is the front. longer than the distance between the pair of leak-proof cuffs in the waist region, furthermore, in the front waist member arranged in the front waist region, the rear waist member arranged in the rear waist region, and the front waist member and the rear waist member The absorbent main body, which is arranged straddling and includes an absorbent body and is separate from the front waistline member and the rear waistline member, joins the end of the front waistline region in the width direction and the end of the rear waistline region in the width direction to the absorbent body. a leg opening edge formed by a side edge of the absorbent body extending in the longitudinal direction, a side located on the rear side of the front waist member, and a side located on the front side of the rear waist member; is provided, and the leak-proof cuff is provided on the absorbent article, and the standing fulcrum of the leak-proof cuff in the rear waist region is the distance between the outer edge of the absorbent body and the inner edge of the side locking part in the width direction is located outside the outer edge of the absorbent body in the width direction by a distance of 2/3 or less of the distance, and is 1/3 or more of the distance between the outer edge of the absorbent body and the inner edge of the side engaging portion in the width direction, An absorbent article is described that is positioned outside the outer edge of the absorbent body (claim 1). In short, the absorbent article described in Patent Literature 1 is characterized by widening the base distance on the skin-side surface of the absorbent article with three-dimensional gathers at the rear part of the body. According to Patent Literature 1, it is described that the leak-preventive cuff can be easily raised by suppressing inhibition of stretchability of the leak-preventive cuff while maintaining the length of the leg opening edge. (Paragraph 0014).

Japanese Patent No. 6725544

However, Patent Document 1 specializes in using an inner with a wide rear part, so when using a small urine absorbing pad during the daytime while it is good at night, the tension of the three-dimensional gather to hold the inner at the back is good. does not work and the position cannot be fixed, resulting in leakage. In addition, the three-dimensional gathers that draw the letter "ha" (katakana "ha") at the end of the season sometimes turn up from the buttocks when turning over, and even with a large inner pad, the position cannot be fixed and there is a problem that it shifts. Furthermore, when the garment is worn, the three-dimensional gathers roll up around the buttocks, impairing the function of the three-dimensional gathers.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a tape-fastened type absorbent article which is useful as an outer layer by enhancing the storability of a large inner pad having a wide rear portion.

As a result of intensive research to solve the above problems, the present inventors have found not only a configuration in which the base distance on the skin side surface of the absorbent article with three-dimensional gathers is widened at the back, but also the three-dimensional gathers from the front to the crotch. It consists of a front three-dimensional gather provided in the front region reaching the middle part of the crotch part and a back three-dimensional gather provided in the rear region from the middle part of the crotch part to the rear part, and the longitudinal dimension of the three-dimensional gathers The ratio between the longitudinal dimension of the front solid gathers and the longitudinal dimension of the rear solid gathers, and the widthwise interval of the base of the solid gathers in the front solid gathers By setting the ratio between the width direction interval in the back side three-dimensional gathers to a predetermined range and the distance between the tips in the width direction of a pair of three-dimensional gathers to a predetermined length along the longitudinal direction, the desired tape-fastening type absorbency The inventors have found that an article can be obtained, and have completed the present invention. That is, the present invention provides the following absorbent article.

(1) A tape-fastening type absorbent article used as an outer,
The front body that mainly contacts the wearer's lower abdomen, the wearer's crotch that mainly contacts the crotch part, and the wearer's back body that mainly contacts the buttocks are connected in this order in the longitudinal direction,
A fastening tape arranged to protrude outward from both sides in the width direction at the rear part of the body, and a fixing means capable of engaging with the fastening tape,
Having a root portion at least partially fixed to the skin-side surface of the absorbent article, and having a pair of three-dimensional gathers extending from the front body to the back body through the crotch on both sides in the width direction,
The three-dimensional gathers include front three-dimensional gathers provided in a front region from the front body to the middle part of the crotch part, and back side three-dimensional gathers provided in the rear region from the middle part of the crotch to the back body. and a three-dimensional gather,
In the pair of three-dimensional gathers, the front three-dimensional gathers and the back three-dimensional gathers have different longitudinal dimensions, and the longitudinal dimension of the front three-dimensional gathers: the longitudinal dimension of the back three-dimensional gathers=1:1 to 3: is a ratio of 2,
The ratio of the width direction spacing of the front side three-dimensional gathers to the width direction spacing of the back side three-dimensional gathers at the base portions of the pair of three-dimensional gathers is 7:8 to 3:4,
The absorbent article, wherein the distance between the ends of the pair of three-dimensional gathers in the width direction is a predetermined length along the longitudinal direction.
(2) The above (1), wherein the pair of front three-dimensional gathers and the pair of back three-dimensional gathers have joint regions for adjusting the difference in the widthwise distance between the root portions of the two. absorbent article.
(3) The absorbent article according to (2) above, wherein the joint region has a length of 20 mm or more and an area of 1000 mm ² or more and 2500 mm ² or less.
(4) The absorbent article according to (2) or (3) above, wherein the joint region is a hot-melt coated region.
(5) The absorbent article according to any one of (1) to (4) above, further comprising a side panel, the side panel being perforated.

ADVANTAGE OF THE INVENTION According to the present invention, there is provided a tape-fastening type absorbent article that enhances the storability of a large inner pad having a wide rear portion and is useful as an outer.

Fig. 2 is a plan view schematically showing a state in which an inner pad is accommodated in the tape-fixed type absorbent article of the present embodiment; (a) shows a schematic cross-sectional view taken along the AA cross-sectional line shown in FIG. 1, and (b) shows a schematic cross-sectional view taken along the BB cross-sectional line shown in FIG. Fig. 2 is a plan view schematically showing a state in which an inner pad is not stored in the tape-fixed type absorbent article of the present embodiment; (a) shows a schematic cross-sectional view along the AA cross-sectional line shown in FIG. 3, and (b) shows a schematic cross-sectional view along the BB cross-sectional line shown in FIG. It is a schematic plan view explaining the formation method of the coating film for installing a three-dimensional gather.

In the present specification, wearing an absorbent article refers to a state in which the absorbent article is worn on the body regardless of whether body fluid is absorbed or not. In the absorbent article, the length direction is the direction across the front and back of the wearer's body through the crotch when the absorbent article is worn on the body, and the width direction is the direction orthogonal to the length direction. , and the thickness direction is the direction in which the constituent members are laminated. The skin surface (or skin side surface) is the surface that contacts and faces the skin of the wearer when the absorbent article is worn, and the non-skin surface (or non-skin side surface) is the surface that faces the wearer's skin. It may be the garment-contacting surface or the garment-facing surface. Body fluids refer to liquids excreted from the body to the outside of the body, such as urine, blood, and water in loose stools.

<Absorbent article>
Hereinafter, the absorbent article 50 of this embodiment will be described with reference to the drawings. 1 and 2 show an outer (absorbent article 50) containing an inner (urine absorption pad 51). 3 and 4 show an absorbent article 50. FIG. These drawings do not define the shape, size, size relationship, etc. of each component in the absorbent article 50 .

The absorbent article 50 of this embodiment includes a front body 60 that mainly contacts the lower abdomen of the wearer, a crotch section 70 that mainly contacts the wearer's crotch region, and a back body that mainly contacts the buttocks of the wearer. The body 80 is connected to the body 80 in this order in the longitudinal direction, and is a tape-fastening type absorbent article (outer) composed of an exterior body 90 to be described later. The absorbent body 1 arranged mainly on the skin side surface of the crotch portion 70 of the outer body 90 is arranged, and on both sides in the width direction of the skin side surface of the outer body 90, from the front body 60 through the crotch portion 70 A pair of three-dimensional gathers 40 extending to the back body 80 are arranged. The three-dimensional gathers 40 are provided in a front three-dimensional gather 48 provided in a front region 71 extending from the front body 60 to the middle of the crotch portion 70, and provided in a rear region 81 extending from the middle of the crotch 70 to the back body 80. and a rear stereoscopic gather 49 . In the three-dimensional gathers 40 , the widthwise interval between the root portions is wider at the rear three-dimensional gathers 49 than at the front three-dimensional gathers 48 . The lengthwise dimension of the absorbent article 50 is, for example, in the range of 700 mm or more and 1100 mm or less, the maximum width is in the range of 700 mm or more and 1500 mm or less, and the maximum width of the backside is in the range of 300 mm or more and 500 mm or less. be.

According to the present embodiment, the widthwise distance between the roots of the three-dimensional gathers 40 is wider in the rear region 81 than in the front region 71, and the longitudinal dimension of the three-dimensional gathers 40 is set to the front three-dimensional gathers 48 and the rear three-dimensional gathers 49. and the ratio of the width direction spacing of the front side solid gathers 48 and the width direction spacing of the rear side solid gathers 49 of the base portion 41 of the solid gathers 40 to a predetermined range, and the pair of solid gathers 40 By setting the distance between the tips in the width direction to a predetermined length along the longitudinal direction, the fit of the inner pad (highly absorbent wide pad) 51 to the tape-fixed type absorbent article 50, which is the outer, is improved.
Firstly, the width of the rear part of the garment is larger than that of the front part of the garment, and the thick high-absorbent wide pad can be quickly accommodated in the three-dimensional gathers. As a result, the burden on caregivers to wear can be greatly reduced compared to outerwear that cannot be accommodated due to the narrow space between the roots of the three-dimensional gathers.
Secondly, unlike the prior art, the distance between the three-dimensional gathers (the distance in the width direction between the ends of a pair of left and right three-dimensional gathers) is a constant distance along the longitudinal direction as in the conventional art. Due to the contractile force, the tension of the three-dimensional gathers can press the highly absorbent wide pad to the outer surface side. Therefore, the wearing position of the inner pad can be stably fixed.
Thirdly, it is possible to prevent the three-dimensional gathers from rolling up around the buttocks when worn.
Fourthly, even if a large, high-absorbency wide pad is used as an inner layer, even if the wearer changes his/her posture due to rolling over in bed, the wearer does not easily get twisted. Since the inner pad is stably fixed and does not easily twist, even if the pad is a large and thick pad, it is possible to suppress pressure on the wearer's skin due to twisting and partial overlap.

According to this embodiment, a joining region (preferably a hot-melt coating region) is provided at a switching position between the front three-dimensional gathers with a narrow widthwise interval between the root portions and the rear three-dimensional gathers with a wide widthwise interval between the root portions. By providing a predetermined area, it is possible to suppress both the front solid gathers and the rear solid gathers, which have different width-direction intervals between the roots, from turning up toward the skin, thereby preventing leakage (urine leakage) to the outside of the outerwear. can be suppressed and the burden of nursing care can be reduced.
If the joint region is too narrow, leakage tends to occur from the gap in the width direction between the front three-dimensional gathers and the rear three-dimensional gathers, and if it is too wide, it tends to hinder pad accommodation. If the area is too narrow or if the length is 20 mm or less, the vertical displacement of the inner pad 51 cannot be suppressed, and if it is too wide, the rigidity around the leg will increase and the feeling of wearing will deteriorate. The shape of the joining area is preferably rectangular.

As shown in FIGS. 1 and 3, the absorbent article 50 includes a front body 60 that mainly contacts the wearer's lower abdomen, a crotch section 70 that mainly contacts the wearer's crotch region, and a wearer's main body. , and the back body 80 that contacts the buttocks are connected in this order in the longitudinal direction. The absorbent article 50 has an absorbent body 1 and three-dimensional gathers 40 on its skin-side surface. In addition, the absorbent article 50 of the present embodiment includes a pair of side flaps 62 extending outward from both ends in the width direction of the back body 80, and fixed to the middle portions in the width direction of the side flaps 62. A pair of side panels 63 extending in the direction, a pair of fastening tapes 64 arranged in the two-forked tab margins of the side panels 63, and the center in the width direction near the ends in the length direction of the front body 60. The outer shape is configured by the outer body 90 including a target tape (fixing member) 65 provided in the vicinity in a strip shape and to which the fastening tape 64 is fixed when the absorbent article 50 is worn. The absorber 1 is mainly supported on the skin side of the crotch portion 70 and has a shape elongated in the length direction to cover the wearer's crotch portion from the front and back of the wearer's body. In the present embodiment, the absorbent article 50 is configured by the integrated outer body 90 extending from the front body 60 to the back body 80 via the crotch portion 70, but the absorbent article 50 is not limited to this. The body part 80 may be separated, and the absorbent article 50 may be formed by connecting them with the absorbent body 1 to form an integrated body.

The widthwise dimension of the front body 60 is, for example, in the range of 380 mm or more and 790 mm or less, and the widthwise dimension (maximum width dimension) of the back body 80 is, for example, in the range of 300 mm or more and 500 mm or less. The dimensions are, for example, in the range of 250 mm to 320 mm, or in the range of 270 mm to 310 mm. By adjusting the dimensions of the front body 60, the back body 80, and the crotch portion 70 within the ranges described above, the tape-fastening type absorbent article 50 that can properly accommodate the inner pad 51 can be obtained.

The three-dimensional gathers 40, the front body 60, the crotch portion 70, the back body 80, the side flaps 62, the target tape 65, and the absorbent body 1 will be described below in this order.

<Three-dimensional gather>
The pair of three-dimensional gathers 40 are formed on the skin-side surface of the outer body 90 that constitutes the outer shape of the absorbent article 50 , so that both sides in the width direction of the absorbent body 1 or both width-direction ends of the non-skin side surface of the absorbent body 1 are attached to the front body 60 . , through the crotch portion 70 and to the back body portion 80 in the longitudinal direction. In this embodiment, the three-dimensional gathers 40 include three-dimensional gathers 48 provided in a front region 71 extending from the front body 60 to the middle of the crotch portion 70, and a rear region 81 extending from the middle of the crotch 80 to the back body 80. and a three-dimensional gather 49 provided in the. At least part of the pair of three-dimensional gathers 40 is fixed to the skin-side surface of the absorbent article 50 by joining with a hot-melt adhesive or the like. The portion joined and fixed to the skin-side surface is referred to as a root portion 41, the front three-dimensional gathers 48 have a root portion 48A, and the rear three-dimensional gathers 49 have a root portion 49A. In the present embodiment, the width direction spacing between the two roots of the front three-dimensional gathers 48 and the width direction spacing between the two roots of the back three-dimensional gathers 49 are defined as the width direction spacing between the two roots of the front three-dimensional gathers 48 ( 1 and 3) and the widthwise interval between the roots of the rear three-dimensional gathers 45 (the interval represented by line segment XY in FIGS. 1 and 3) are different widths. (length).

In this embodiment, the longitudinal dimension of the front three-dimensional gathers 48 and the longitudinal dimension of the rear three-dimensional gathers 49 are different. The longitudinal dimension of the front solid gathers 48: the longitudinal dimension of the back solid gathers 49 is, for example, in a ratio of 1:1 to 3:2. If the ratio is less than 1:1, the fixing of the inner pad 51 tends to be loose if the front and rear widths are different. If the ratio exceeds 3:2, it tends to be difficult for the inner pad 51 to fit within the three-dimensional gathers 40 .

In the present embodiment, regarding the “width direction spacing”, which is the spacing between the base portions 41 of the three-dimensional gathers 40 on both sides in the width direction, the width direction spacing of the front side three-dimensional gathers 48: the width direction of the back side three-dimensional gathers 49 The spacing is in a ratio of 7:8 to 3:4. If the widthwise spacing of the front three-dimensional gathers 48 becomes smaller than 7:8, the widthwise spacing of the rear three-dimensional gathers 49 becomes too narrow to accommodate the inner pad 51, or the widthwise spacing of the front side becomes too wide. As a result, the inner pad 51 tends to be easily displaced. If the widthwise spacing of the rear three-dimensional gathers 49 is increased beyond 3:4, the widthwise spacing of the rear three-dimensional gathers 49 is too narrow to accommodate the inner pad 51 as described above, or the front three-dimensional The widthwise interval of the gathers 48 is too wide, and the inner pad 51 tends to be easily displaced.

In the present embodiment, the tips of the pair of three-dimensional gathers 40 are the tips on the inner side in the width direction. A pair of points (line segments in the longitudinal direction) exist on both sides in the width direction. The tip of the three-dimensional gathers 40 is near the position where the first rubber thread is applied. The widthwise gap between the tips of the two three-dimensional gathers 40 present on both sides in the widthwise direction is a predetermined length along the longitudinal direction, for example, in the range of 70 mm or more and 180 mm or less. According to this configuration, even the narrow inner pad 51 such as a small urine absorbing pad can be tensioned when stored, and the position can be fixed.

As described above, the pair of three-dimensional gathers 40 of the present embodiment have the spacing (width direction spacing) between the two roots 48A of the front three-dimensional gathers 48 and the spacing between the two roots 49A of the rear three-dimensional gathers 49. (width direction interval) and are provided with different widths (lengths). For this reason, in the boundary region between the front region 71 and the rear region 81 in the longitudinal direction, there is a gap between the base portions 48A and 49A of the three-dimensional gathers 40 (48, 49) extending in the longitudinal direction, toward the top sheet 10 side in the width direction. Embodiments that result in unfixed gaps are produced. In such an embodiment, a joint region 42 is provided between a pair of front three-dimensional gathers 48 and a pair of rear three-dimensional gathers 49 to adjust the difference in widthwise distance between the root portions 48 and 49 of both. The bonding region 42 is provided, for example, with a longitudinal dimension of 20 mm or more and an area of 1000 mm ² or more and 2500 mm ^{2 or} less. Also, the bonding region 42 may be, for example, a hot-melt coating region. The hot-melt coated region can be formed, for example, by applying a hot-melt adhesive and drying it.

By providing the joint region 42, both the front solid gathers 48 and the rear solid gathers 49 with different root intervals can be prevented from being turned over toward the skin side, thereby suppressing leakage to the outside of the outerwear and reducing nursing care burden. . If the joint region 42 is narrower than 1000 mm ² , leakage tends to occur easily from the gaps in the width direction between the roots 48A and 49A of the front three-dimensional gathers 48 and the rear three-dimensional gathers ⁴⁹ . It tends to come out easily and the feeling of wearing tends to decrease. If the area is too narrow or if the length is less than 20 mm, the vertical displacement of the inner pad 51 cannot be suppressed, and if it is too wide, the rigidity around the leg will be increased and the feeling of wearing will be reduced. Although the planar view shape of the joint region 42 of this embodiment is rectangular, it is not limited to this, and may be, for example, a triangle, a hexagon, an octagon, a rectangle, a circle, or the like.

As the hot-melt adhesive, those having a melting point of 100° C. or higher and 180° C. or lower can be used without particular limitation. Examples include hot-melt adhesives, olefin-based hot-melt adhesives such as ethylene-vinyl acetate copolymers, and the like. As a method for applying the hot melt adhesive, known methods such as a curtain coating method and a spiral method in which the molten hot melt adhesive is applied from a nozzle in a non-contact manner, and a slot method in which the adhesive is applied in a contact manner can be used. The content of the hot-melt adhesive in the adhesive layer is, for example, in the range of 10 g/m ² or less from the viewpoint of not impairing the absorbability of body fluids of the superabsorbent polymer 13 and the feel when worn.

The three-dimensional gathers 40 can be formed as follows using, for example, intermittent slot coating. According to the intermittent slot coating, a pair of rear slot coating lines extending linearly in the longitudinal direction are provided on both sides in the width direction of the rear region 81 of the skin-side surface of the absorbent article 50A (the exterior body 90 of the absorbent article 50). 15 is formed. Next, a pair of front slot coat lines 16 extending linearly in the longitudinal direction are formed on both sides in the width direction of the front region 71 of the skin-side surface of the absorbent article 50A (the exterior body 90 of the absorbent article 50). A three-dimensional gather 48 is attached to the surface of the slot coat wire 16, a three-dimensional gather 49 is attached to the surface of the slot coat wire 15, and a three-dimensional gather 40 is constructed as a whole. Further, if necessary, slot coat regions 17 are formed at both ends in the width direction by intermittent slot coating in the width direction step regions of the pair of slot coat lines 15 and 16 to form bonding regions 42 .

The three-dimensional gathers 40 include, for example, an elastic stretchable member 40a and a water-repellent and/or waterproof sheet member 40b, as shown in FIG. 2 and the like.
The elastic stretchable member 40a is arranged in the vicinity of the free end (the other end) of the sheet member 40b along the longitudinal direction, and provides the free end with uprightness so that the free end of the sheet member 40b and the area near the seat member 40b can be used by the wearer. Make it deformable according to the body shape of. In the present embodiment, the sheet member 40b has one end in the width direction (fixed end) fixed near both ends in the width direction of the skin side surface of the back sheet 30 of the absorbent body 1, and a midway portion in the width direction is fixed to the skin of the top sheet 10 of the absorbent body 1. It is a free end that is fixed near both ends in the width direction of the side surface, and that the other end in the width direction is upright. The fixed position of the fixed end (one end in the width direction) of the sheet member 40b is not limited to this embodiment. and the vicinity of both width direction ends of the skin side or non-skin side of the joined body, the vicinity of both width direction ends of the skin side of the top sheet 10, and the like. The front solid gathers 48 and the solid gathers 49 are made of the same sheet member 40b.

The sheet member 40b is a water-repellent and/or waterproof sheet, and is made of, for example, non-woven fabric. As the non-woven fabric for the sheet member, a water-repellent and/or waterproof (liquid-impermeable) non-woven fabric made of hydrophobic fibers can be used without particular limitation. Composite nonwoven fabrics (SMS nonwoven fabrics), which are meltblown nonwoven fabric/spunbond nonwoven fabric laminates, and the like can be mentioned. The basis weight of the sheet member 40b is, for example, in the range of 13 g/m ² or more and 20 g/m ² or less. As the elastic stretchable member 40a, for example, a string-like, string-like, or belt-like member made of natural rubber, synthetic rubber, polyurethane, or the like can be used as appropriate.

<Front body, crotch, and back body>
The front body 60 and the back body 80 are formed at the front end (abdominal end) and the rear end (dorsal end) of the absorbent body 1, respectively, using an exterior body material containing nonwoven fabric or the like. . Also, the crotch portion 70 is interposed between the front body 60 and the back body 80, and is formed of an exterior body material including non-woven fabric or the like.

In this embodiment, the front body 60, the crotch part 70, and the back body 80 are respectively composed of an exterior nonwoven fabric sheet (not shown) positioned on the non-skin side of the wearer and a back sheet film (not shown) positioned on the skin side of the wearer. not shown). The crotch part 70 is folded in half along the center line of the absorbent body 1 so that the absorbent body 1 is on the inside, and both side edges of the lower abdomen and the back side are connected. be done. As a result, the exterior nonwoven fabric sheet forms an elastic waist opening and a pair of leg openings, and the absorbent article 50 as a whole is configured in the shape of detachable pants. When the absorbent article 50 is worn, the lower abdomen covers the waist on the wearer's abdomen, and the back side 16 covers the waist on the wearer's back.

A back sheet film, for example, is laminated inside the exterior non-woven fabric sheet to increase the strength of the front body 60, the back body 80 and the crotch portion 70. As shown in FIG. A nonwoven fabric containing fibers made of a thermoplastic resin such as polypropylene, polyester, or polyethylene can be used for the exterior nonwoven fabric sheet. Specific examples of the nonwoven fabric include thermal bonded nonwoven fabric, air-through nonwoven fabric, spunbond nonwoven fabric, and the like. Among these, air-through nonwoven fabrics, spunbond nonwoven fabrics, and the like are preferable. The basis weight of the nonwoven fabric is, for example, in the range of 15 g/m ² or more and 40 g/m ² or less. As the back sheet film, a resin film can be used without particular limitation, and examples thereof include polyethylene films. The basis weight of the backsheet film is, for example, 10 g/m ² or more and 40 g/m ² or less.

<Side flap and target tape>
The absorbent article 50 of the present embodiment has a pair of side flaps 62 formed at both widthwise end portions of the lower abdomen and the dorsal portion 16 of the backsheet film, and the width of each side flap 62 of the dorsal portion 16. The side panel 63 provided at the widthwise end of the free end, which is the outer end of the direction, and the side panel 63 provided at the widthwise end of the free end, which is the outer end of the side panel 63 in the width direction. It has two crotch fastening tapes 64 attached. The absorbent article 50 of this embodiment also includes embodiments without side flaps 62 , side panels 63 and fastening tapes 64 . Moreover, the side panel 63 and the fastening tape 64 may be formed of separate members, or may be integrally formed. Also, in this embodiment, the two fastening tapes 64 on one side panel 63 may be spaced apart in the longitudinal direction of the absorbent article 50 . The fastening tapes 64 are provided on the skin side with fastening means consisting of hook members constituting hook-and-loop fasteners for fastening the lower abdomen and the dorsal portion 16, and the tips of the outer ends in the width direction of each fastening tape 64. may be provided with a gripping margin that is divided into two forks. The side panel 63 may be provided with perforations that allow it to be divided. On the other hand, a target tape 65 formed of a loop member that constitutes a hook-and-loop fastener may be provided on the garment-side surface of the lower abdomen. When the absorbent article 50 is put on by the wearer, each fastening tape 64 is fixed to a target tape 65 composed of a loop member as fastening means. As a result, the absorbent article 50 of the present embodiment can be configured as a tape-fastening type paper diaper. The present invention is not limited to this, and the absorbent article 50 may be formed by connecting the front body 60 and the back body 80 at the widthwise ends at the waist portion and integrating them into a pants-like shape.
In addition, a perforation 66 that can be manually cut and divided can be provided at or near the center of the side panel 63 in the longitudinal direction. As a result, the tab portion can be divided long from the perforations 66, and the engagement position can be freely selected from a wider range. Depending on the body shape, it is possible to develop a tension that allows the absorbent article 50 to be in close contact with the wearer's body when worn.

In addition, nonwoven fabrics made of polyethylene, polypropylene, polystyrene, or the like can be used as the base material of the side flaps 62, and these base materials may be used singly or in combination. Moreover, the base material of the side panel 63 and the fastening tape 64 includes resin films and nonwoven fabrics made of polyethylene, polypropylene, polystyrene, etc., and these base materials may be used singly or in combination. In addition, the hook member refers to a member consisting of a hook-shaped projection among the members constituting the hook-and-loop fastener, and the loop member is a member paired with the hook member, and is densely raised in a loop shape. Refers to the member. The hook-and-loop fastener is constructed by pairing the hook member and the loop member. For example, the absorbent article 50 can be worn by bringing the lower abdomen toward the abdomen of the wearer while the dorsal portion 16 is in contact with the back of the wearer, and fastening the fastening tape 64 to the target tape 65. can. In addition, the perforations 66 can be provided at equal intervals substantially in the center of the side panel 63 in the longitudinal direction.

<Absorber>
As shown in FIG. 2, the absorbent body 1 has a basic unit of a top sheet 10, an absorbent core 20, and a back sheet 30, which are laminated from the skin side to the non-skin side. The absorbent body 1 of this embodiment has a pair of three-dimensional gathers 40 extending in the longitudinal direction near both width direction ends of the skin side surface of the top sheet 10 . Various known modifications can be applied to the absorber 1 . Hereinafter, the configuration of each member will be described in more detail in the order of the top sheet 10, the absorbent core 20, the back sheet 30, and the three-dimensional gathers 40.

(top sheet)
The top sheet 10 is a liquid-permeable sheet-like base material that allows bodily fluids to pass quickly toward the absorbent sheet 90 and the absorbent core 20 . Since the top sheet 10 may come into contact with the wearer's skin, it is preferable to use a base material that is soft to the touch and does not irritate the skin. Examples of the substrate include a hydrophilic sheet, a composite nonwoven fabric which is a laminate of hydrophilic sheets of the same or different types, an open film such as an open polyethylene film, and a foamed film such as a polyethylene foam and a urethane foam. Hydrophilic sheets include, for example, synthetic fibers made of synthetic resins such as polypropylene and polyethylene, regenerated fibers such as rayon, and natural fibers such as cotton. A spunbond nonwoven fabric etc. are mentioned.

The surface of the top sheet 10 may be embossed or perforated from the viewpoint of improving liquid permeability. From the viewpoint of reducing irritation to the skin, the top sheet 10 may contain one or more of lotions, antioxidants, anti-inflammatory ingredients, pH adjusters, antibacterial agents, moisturizers, and the like. The basis weight of the top sheet 10 is, for example, in the range of 15 g/m ² or more and 40 g/m ^{2 or} less from the viewpoint of strength, workability, and liquid return amount. The shape of the top sheet 10 is not particularly limited, and a shape that covers part or all of the absorbent core 20 required to guide bodily fluids to the reactive absorbent sheet 90 and absorbent core 20 without leakage. If it is

(absorbent core)
The absorbent core 20 has a longitudinal dimension (maximum length) of, for example, 100 mm or more and 800 mm or less, 150 mm or more and 500 mm or less, or 270 mm or more and 500 mm or less. The widthwise dimension (maximum width) of the absorbent core 20 is, for example, in the range of 50 mm or more and 500 mm or less, 60 mm or more and 400 mm or less, or 70 mm or more and 105 mm or less. Further, when the absorbent core 20 has an hourglass shape in plan view, the longitudinal dimension is in the range of 180 mm or more and 800 mm or less, and the width dimension of the ventral portion and the dorsal portion that contact the abdomen and the back of the wearer, respectively. Both are in the range of 60 mm or more and 400 mm or less, and the width direction dimension of the crotch portion that contacts the wearer's crotch portion is in the range of 90 mm or more and 250 mm or less. All or part of the absorbent core 20 may be embossed. Examples of the planar shape of the absorbent core 20 include an hourglass shape, an I shape, a rectangle, a square with rounded corners, and an ellipse. The absorbent core 20 may be a laminate of an upper absorbent core placed on the upper layer (skin side) and a lower absorbent core placed on the lower layer (non-skin side).

The absorbent core 20 contains, for example, absorbent fibers and a superabsorbent polymer (hereinafter also referred to as "SAP") as absorbent base materials.

(absorbent fiber)
Absorbent fibers are not particularly limited as long as they are generally used for absorbent articles such as sanitary napkins, paper diapers, and incontinence pads. elastic nonwoven fabrics, and the like. Among these, fluff pulp is preferable from the viewpoint of absorbability. Examples of fluff pulp include wood pulp (eg, bleached softwood kraft pulp (N-BKP) such as southern pine and Douglas fir), synthetic fibers, resin fibers, flocculated materials such as non-wood pulp, and the like. When fluff pulp is used as the absorbent fiber in the absorbent core 20, the basis weight of the absorbent fiber is, for example, in the range of 100 g/m ² or more and 800 g/m ² or less, or in the range of 325 g/m ² or more and 615 g/m ^{2 or} less. be. This allows it to absorb more bodily fluids without sacrificing texture.

(super absorbent polymer)
The superabsorbent polymer is not particularly limited as long as it can absorb bodily fluids and prevent backflow. Polyacrylates, polyaspartates, (starch-acrylic acid) graft copolymers, (acrylic acid-vinyl alcohol) copolymers, (isobutylene-maleic anhydride) copolymers and saponified products thereof. Among these, polyacrylates are preferred, alkali metal polyacrylates are more preferred, and sodium polyacrylate is even more preferred, from the viewpoint of absorption per weight. A superabsorbent polymer can be used individually by 1 type or in combination of 2 or more types.

The superabsorbent polymer is used, for example, in the form of particles, fibers, etc., but is preferably used in the form of particles from the viewpoint of ease of handling. At this time, by avoiding the use of a fine powder superabsorbent polymer with poor fluidity as a powder and using a superabsorbent polymer having a medium particle size, the basic performance related to absorption is improved, and the absorbent core 20 It is possible to reduce the rugged tactile sensation caused by hardening. The median particle size of the superabsorbent polymer is, for example, in the range of 50 µm to 600 µm or in the range of 100 µm to 500 µm.

The basis weight of the SAP in the absorbent core 20 is, for example, in the range of 60 g/m ² to 450 g/m ² or in the range of 245 g/m ² to 445 g/m ² . By setting the basis weight of SAP within the numerical range described above, it is possible to prevent gel blocking in the absorbent core 20 and to allow the absorbent core 20 to absorb a large amount of body fluid. In addition, in the absorbent core 20, the ratio of the weight of the superabsorbent polymer to the weight of the entire absorbent core 20, weight of the superabsorbent polymer/weight of the entire absorbent core 20 x 100 (%), is, for example, 15 weights. % or more, or a range of 15 wt % or more and 70 wt % or less.

In the absorbent core 20, the absorbent fibers and the SAP may be formed by mixing SAP particles in the absorbent fibers, or may be an SAP sheet in which the SAP particles are fixed between the absorbent fibers.

(back seat)
The back sheet 30 may be formed using a liquid-impermeable base material that does not allow the body fluid retained by the absorbent core 20 to wet clothes. and a composite sheet, which is a laminate of a nonwoven fabric and the like. The nonwoven fabric used for the composite sheet is not particularly limited in manufacturing method, and examples thereof include single-layer nonwoven fabrics such as spunbond nonwoven fabrics and meltblown nonwoven fabrics, spunbond nonwoven fabric/meltblown nonwoven fabric laminates, spunbond nonwoven fabric/meltblown nonwoven fabric/spunbond nonwoven fabric laminates. Composite nonwoven fabrics such as bodies, composite materials thereof, and the like. Examples of resin films include polyester, polyvinyl alcohol, polyethylene, polypropylene, composite films of polyethylene and polypropylene, and the like.

The basis weight of the backsheet 30 is, for example, in the range of 15 g/m ² or more and 60 g/m ^{2 or} less from the viewpoint of strength and workability. In addition, it is preferable that the back sheet 30 has air permeability in order to prevent stuffiness during wearing. In order to make the back sheet 30 air-permeable, for example, a filler may be added to the base resin film, or the back sheet 30 may be embossed. Calcium carbonate can be used as a filler, and a known method can be used without limitation as a method for blending the filler.

<Method for manufacturing absorber>
The absorbent body 1 can be manufactured by a known manufacturing method. and a step of fixing using a hot-melt adhesive, heat embossing, ultrasonic embossing, high-frequency embossing, or the like over a portion or the entire circumference. If necessary, leg gathers, waist gathers, side flaps, etc. can be provided.

<Method for manufacturing absorbent article>
The manufacturing method of the absorbent article 50 is not particularly limited, and conventionally known methods can be adopted. , disposing the absorber 1 on the skin-side surface of the outer body material including the outer nonwoven fabric sheet and the bag sheet film, further disposing the three-dimensional coat 40, and the target tape 65 of the front body 60 and a step of connecting the fastening tape 64 of the back body 80, and the like. The fastening tape 64 may be obtained by bonding the fastening means to the surface of the base material of the side panel 63 in advance, cutting the side panel 63 into a predetermined shape, and joining the side panel 63 to the side flap 62 .

The absorbent article 51 accommodated in the absorbent article 50 according to the present embodiment is a pad product such as a highly absorbent wide pad that absorbs a large amount of bodily fluid, and as shown in FIG. , which includes the top sheet 11 , the absorbent core 21 , the back sheet 31 , and the three-dimensional gathers 45 . The top sheet 11 is the same as the top sheet 10 described above, the absorbent core 21 is the same as the absorbent core 20 described above except that it has two through holes 46 extending in the longitudinal direction, and the back sheet 31 is the back sheet 31 described above. Similar to the sheet 30, the three-dimensional gathers 45 are similar to the three-dimensional gathers 40 except that the base-to-root spacing is equal.

Although the present invention has been described using the embodiments, it goes without saying that the technical scope of the present invention is not limited to the scope described in the above embodiments and examples. It is obvious to those skilled in the art that various modifications or improvements can be made to the above embodiments. In addition, it is clear from the description of the scope of the claims that forms with such modifications or improvements can also be included in the technical scope of the present invention.

EXAMPLES Examples and comparative examples are given below to describe the present embodiment more specifically.

(Examples 1 to 7 and Comparative Examples 1 to 7)
A tape-fixed type absorbent article for outer use having the structure shown in Table 1 and a tape-fixed incontinence pad for inner use having the structure shown in Table 2 were prepared, and 10 panelists were asked to wear them. It was used for evaluation. Table 3 shows the results.

(feeling of pressure and discomfort from long-term continuous wear)
10 panelists were asked to wear the mask overnight (8 hours or longer, 10 to 14 hours as a result), and answers were obtained as to whether or not they felt pressure.
(Replacement workability)
10 panelists asked the care staff who wore and replaced the above tape-fastened absorbent article about the workability when replacing the tape-fastened urine absorption pad for the inner after wearing it (easily inserting the inner pad into the tape-fastened I got an answer about whether it is possible to
(presence or absence of leakage)
We asked 10 panelists to answer whether or not the nursing care staff who put on or replaced the tape-fastening type absorbent article mentioned above had any leaks or slippage or twisting of the inner pad.
Responses were evaluated according to the following criteria.
○: When 8 to 10 people answered "I didn't feel any pressure,""Ididn't see any leaks, slippage, or twisting," and "It was easy to put the inner pad to the tape when replacing the inner pad." △: "Compression When 5 or more and 7 or less of the respondents answered "I did not feel any pressure", "I did not see any leakage, slippage, or twist" and "It was easy to put the inner pad to the tape stop when replacing the inner pad" ×: "I did not feel any pressure" The results are shown in Table 3.

Examples 1-7 and Comparative Examples 1-7 were actually as follows.
(Example 1) Good monitoring results were obtained after long-term use. The width ratio between the front and back of the space at the base of the three-dimensional gathers accommodated the width of the inner pad appropriately, and the joint encapsulation area was able to effectively suppress the front-to-rear misalignment of the inner.
(Embodiment 2) The ratio of the lengths of the front side region and the rear side region having different base distances of the three-dimensional gathers was changed. The result was that the feeling of use was good.
(Embodiment 3) The space at the base of the three-dimensional gather was slightly changed. A result was obtained that the feeling of use was similarly good. The space between the roots of the three-dimensional gathers in the rear area has been widened. As in Example 2, the result was that the feeling of use was good.
(Embodiment 4) The bonding area was narrowed. The front and back displacement of the inner pad was effectively suppressed, and the monitoring results were good.
(Embodiment 5) The length and width of the bonding area were changed. Similarly, the front and back displacement of the inner pad was effectively suppressed, and the monitoring results were good.
(Embodiment 6) The length and width of the bonding area were changed and enlarged. Similarly, the front and back displacement of the inner pad was effectively suppressed, and it was good without any discomfort when worn.
(Embodiment 7) The length and width of the junction enclosing region were changed and enlarged. Similarly, the front and back displacement of the inner pad was effectively suppressed, and it was good without any discomfort when worn.
(Comparative Example 1) The length ratio of the front region and the rear region was changed. The inner pad didn't fit well, and it slipped while wearing, leading to leakage. The workability of replacement was also low because it was difficult to insert the inner pad.
(Comparative Example 2) As in Comparative Example 1, the ratio of the lengths of the front side region and the rear side region was not changed, and the fit of the inner pad was poor, causing leaks, resulting in a low evaluation.
(Comparative Example 3) The widthwise interval between the base portions of the three-dimensional gathers was changed. The storability of the inner pad deteriorated, causing leaks and lowering the replacement workability.
(Comparative Example 4) The widthwise interval between the roots of the three-dimensional gathers in the rear region was changed to be considerably wider. The workability of exchanging the inner pad was good, but the slippage of the inner pad made it uncomfortable to wear, and the leakage prevention property deteriorated.
(Comparative Example 5) The length of the joint region was made smaller than the prescribed length. The inner pad slipped back and forth, leading to leakage. In addition, there was a sense of discomfort in wearing due to the misalignment of the inner.
(Comparative Example 6) The area of the bonding region was made larger than specified. I was able to suppress the front and back displacement of the inner pad, but the stiffness around the legs was a little worse, and the feeling of wearing was slightly worse.
(Comparative Example 7) The area of the bonding region was made smaller than specified. Leakage occurred due to the front and back misalignment of the inner pad. There was no problem in exchange workability and feeling of wearing.

Reference Signs List 1 absorber 10, 11 top sheet 15 rear slot coat line 16 front slot coat line 17 slot coat area 20, 21 absorbent core 30, 31 back sheet 40, 45 three-dimensional gathers 41, 48A, 49A root part 42 joining area 48 front side Solid gather 49 Back solid gather 50, 51 Absorbent article 60 Front body 62 Side flap 63 Side panel 64 Fastening tape 65 Target tape 66 Perforation 70 Crotch 71 Front region 80 Back body 81 Rear region 90 Exterior body

Claims (5)

A tape-fastening type absorbent article used as an outer,
The front body that mainly contacts the wearer's lower abdomen, the wearer's crotch that mainly contacts the crotch part, and the wearer's back body that mainly contacts the buttocks are connected in this order in the longitudinal direction,
A fastening tape arranged to protrude outward from both sides in the width direction at the rear part of the body, and a fixing means capable of engaging with the fastening tape,
Having a root portion at least partially fixed to the skin-side surface of the absorbent article, and having a pair of three-dimensional gathers extending from the front body to the back body through the crotch on both sides in the width direction,
The three-dimensional gathers include front three-dimensional gathers provided in a front region from the front body to the middle part of the crotch part, and back side three-dimensional gathers provided in the rear region from the middle part of the crotch to the back body. and a three-dimensional gather,
In the pair of three-dimensional gathers, the front three-dimensional gathers and the back three-dimensional gathers have different longitudinal dimensions, and the longitudinal dimension of the front three-dimensional gathers: the longitudinal dimension of the back three-dimensional gathers=1:1 to 3: is a ratio of 2,
The ratio of the width direction spacing of the front side three-dimensional gathers to the width direction spacing of the back side three-dimensional gathers at the base portions of the pair of three-dimensional gathers is 7:8 to 3:4,
The absorbent article, wherein the distance between the ends of the pair of three-dimensional gathers in the width direction is a predetermined length along the longitudinal direction. 2. The absorbent according to claim 1, wherein a joining region is provided between the pair of the front three-dimensional gathers and the pair of the back three-dimensional gathers for adjusting the difference in the widthwise distance between the root portions of both. Goods. 3. The absorbent article according to claim 2, wherein said joint region is provided with a length of 20 mm or more and an area of 1000 mm ^<2> or more and 2500 mm ^<2> or less. 4. The absorbent article according to claim 2 or claim 3, wherein said bonding area is a hot melt applied area. 5. The absorbent article according to any one of claims 1 to 4, further comprising side panels, said side panels being perforated.