Tape-fastened absorbent article

Abstract

To provide a tape fastening type absorbent article which can appropriately store and keep a narrow urine absorbent pad for daytime and a wide pad for nighttime.SOLUTION: A tape fastening type absorbent article is equipped with a top sheet 10, an absorbent core 20, and a back sheet 30, and includes an exterior body 90 in which a front body part 60, a crotch part 70, and a back body part 80 are connected, a pair of fastening tapes 64 extended outward from both ends of the back body part 80, fixing means 65, and a pair of three-dimensional gatherings 40 extending in a longitudinal direction on both sides in a width direction of the top sheet 10. The three-dimensional gatherings 40 include a gathering sheet part 41, a base fixing part 42 fixed on a skin side surface of the top sheet 10, and an adjusting part 43 which is detachably provided relative to a gathering sheet 40b, is positioned inside in a width direction of the base fixing part 42 on the skin side surface of the top sheet 10, temporarily fixes the gathering sheet 40b, and adjusts dimensions in the width direction between the pair of the three-dimensional gatherings 40.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a tape-fastened absorbent article. [Background technology]

[0002] In heavy nursing care, tape-type disposable diapers are used as the outer layer and urine-absorbing pads as the inner layer. With the current chronic shortage of nursing care workers, it is difficult to ensure sufficient frequency of diaper changes, so there has been a significant trend toward larger, more absorbent inner pads, especially those worn at night. Specifically, the width of the inner pad in the buttocks area is made larger in the longitudinal direction than the other front areas.

[0003] However, due to the increasing size of the inner pad, when attempting to fit the inner pad inside a tape-fastened disposable diaper outer, the spacing between the bases of the three-dimensional gathers on the outer is not wide enough to accommodate the larger inner pad, making it difficult to store and put on. This problem not only places a burden on the caregiver, but also makes it difficult to secure the thick, large inner pad in the correct position when trying to fit it in. This causes wrinkles in the entire inner pad and the skin-contacting surface that comes into contact with the wearer's skin, resulting in a feeling of pressure on the wearer and leakage. This places a considerable psychological and physical burden on both the caregiver and the care recipient. Thus, there is a need for a tape-fastened disposable diaper that is easy to store a large inner pad with a wide rear, is easy to put on, does not cause a feeling of pressure, and is less likely to leak.

[0004] Patent Document 1 describes a disposable wearing article that includes an outer cover having a crotch region between a front abdominal region and a rear region, a waist-opening formed at the upper part of the front abdominal region and the rear region, and leg-openings formed at both sides of the crotch region, and a belt member that holds the inner pad in place on the skin-side surface of the outer cover when an inner pad is replaceably set on the skin-side surface of the outer cover, the belt member extending in the width direction of the outer cover, both ends of the belt member fixed to a top sheet of the outer cover positioned outside the inner pad, and a predetermined portion between the both ends of the belt member releasably temporarily fixed to the skin-side surface of the outer cover with a temporary fixing material before the inner pad is set (Claim 1). Patent Document 1 also describes that the portion between the ends of the belt member is less likely to lift up, which makes it less likely to get caught on parts on a manufacturing line during production of the disposable wearing article, and less likely to catch on a wearer's feet when putting the disposable wearing article on (Paragraph 0014). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 4284217 Summary of the Invention [Problem to be solved by the invention]

[0006] The technology described in Patent Document 1 involves fixing an inner pad with a stretchable belt member that is stretched in the width direction. However, with this technology, high stretchability causes the outer to shrink in the width direction, making it difficult to wear, while low stretchability has the problem of not being able to adequately hold a small urine absorption pad or a large, highly absorbent inner pad for long nighttime use.

[0007] To solve these problems, widening the widthwise spacing of the three-dimensional gathers of tape-fastened outer disposable diapers improves the storage capacity of larger inner pads used at night, but causes problems with the retention of small inner pads used during the day, such as urine absorption pads. This means that the widthwise spacing of the three-dimensional gathers of the outer is too wide for the product width of the small inner pad, resulting in good storage capacity, but the pad is too wide, making it difficult to secure. Therefore, there is a need for a tape-fastened outer absorbent article that can properly store and hold both inner pads such as narrow urine absorption pads, which are mainly used during the day, and wide pads, which are mainly used at night.

[0008] An object of the present invention is to provide a tape-fastened absorbent article that can properly store and hold both narrow urine pads that are mainly used during the day and wide pads that are mainly used at night. [Means for solving the problem]

[0009] As a result of extensive research to solve the above problems, the inventors have found that a desired tape-fastened absorbent article can be obtained by configuring three-dimensional gathers, as in the past, with a gathered sheet portion that includes a gathered sheet that expands in the width direction and extends in the longitudinal direction, with at least the widthwise leading ends (free ends) standing up relative to the skin-side surface of the top sheet, and root fixing portions that are fixed to both widthwise sides of the skin-side surface of the top sheet and extend in the longitudinal direction, and by providing adjustment portions that are detachably attached to the gathered sheet and located on the skin-side surface of the top sheet inward in the width direction of the root fixing portions, for temporarily fixing the gathered sheet and adjusting the widthwise dimension between a pair of three-dimensional gathers, thereby completing the present invention. The present invention provides the following tape-fastened absorbent articles.

[0010] (1) A tape-fastened absorbent article comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed therebetween, The garment comprises an outer body in which a front body mainly contacts the wearer's abdominal side, a crotch portion mainly contacts the wearer's crotch area and supports the absorbent body, and a back body mainly contacts the wearer's back side, all of which are connected in this order in the longitudinal direction; a pair of fastening tapes extending outward from both ends of the back body in the width direction; and fixing means for fixing the fastening tapes. The top sheet further has a pair of three-dimensional gathers extending longitudinally from the front body through the crotch portion toward the back body on both sides in the width direction of the skin-side surface of the top sheet, The three-dimensional gathers are a gathered sheet portion including a gathered sheet that spreads in the width direction and extends in the longitudinal direction, and at least a free end that is a leading end in the width direction stands up relative to the skin-side surface of the front top sheet; root fixing portions fixed to both widthwise sides of the skin-side surface of the top sheet and extending in the longitudinal direction; a tape-fastened absorbent article comprising an adjustment section that is detachably attached to the gathered sheet, that is located on the skin-side surface of the top sheet, widthwise inside the base fixing section, that temporarily fixes the gathered sheet, and that adjusts the widthwise dimension between the pair of three-dimensional gathers. (2) The tape-fastened absorbent article according to (1) above, wherein the adjustment portion is a hook tape, and the hook tape engages with the non-skin-side surface of the gathered sheet. (3) The tape-fastened absorbent article according to (1) or (2) above, wherein the adjustment portion has a triangular shape in a plan view. (4) The tape-fastened absorbent article further has an end seal portion for fixing the end of the three-dimensional gather near the longitudinal end of the skin-side surface thereof, The tape-fastened absorbent article according to any one of (1) to (3) above, wherein at least four of the adjustment portions are provided inside the end seal portions in the longitudinal direction and width direction. (5) A tape-fastened absorbent article according to any one of (1) to (4) above, wherein the temporary fixing position of the gathered sheet is set within a range of 30 to 80 from the widthwise inner end of the base fixing portion, when the length from the widthwise inner end of the base fixing portion to the widthwise tip end of the gathered sheet portion is 100. [Effects of the Invention]

[0011] According to the present invention, a tape-fastened absorbent article is provided that can properly store and hold both narrow urine pads that are used mainly during the day and wide pads that are used mainly at night. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a development view schematically illustrating the configuration of a tape-fastened absorbent article according to an embodiment of the present invention. [Figure 2] 10A and 10B are schematic diagrams for explaining the widthwise spacing between the three-dimensional gathers set by the adjustment portion. [Figure 3] 1A and 1B are schematic diagrams illustrating the configuration of an adjustment unit, where (a) shows one embodiment of the adjustment unit, and (b) shows the adjustment unit and its surrounding configuration. [Figure 4] 1A and 1B are schematic diagrams showing a state in which a small urine absorption pad for daytime use is housed in a tape-fastened absorbent article according to the present embodiment, where (a) is a plan view and (b) is a cross-sectional view. [Figure 5] 1A and 1B are schematic diagrams showing a state in which a wide pad for overnight use is housed in a tape-fastened absorbent article according to the present embodiment, where (a) is a plan view and (b) is a cross-sectional view. DETAILED DESCRIPTION OF THE INVENTION

[0013] In this specification, "wearing a tape-fastened absorbent article" refers to the state in which the tape-fastened absorbent article is worn on the body, regardless of whether bodily fluids have been absorbed or not. In a tape-fastened absorbent article, the length direction is the direction indicated by Y that extends from the front to the back of the body via the wearer's crotch when the tape-fastened absorbent article is worn on the body, the width direction is the direction indicated by X that is perpendicular to the length direction, and the thickness direction is the direction indicated by Z in which the components are stacked. The skin-facing surface is the surface that contacts or faces the wearer's skin when the tape-fastened absorbent article is worn, and the non-skin-facing surface is the surface that contacts or faces the wearer's clothing. Body fluids refer to liquids excreted from the body to the outside, such as urine, blood, and water in loose stools.

[0014] <Tape-fastened absorbent article> Hereinafter, a tape-fastened absorbent article 50 of this embodiment will be described with reference to the drawings. Figs. 1 to 3 show the tape-fastened absorbent article 50 of this embodiment and a part thereof. Figs. 4 and 5 show the outer (tape-fastened absorbent article 50) with the inner (urine absorption pad 51, wide pad 52) housed inside. These drawings do not specify the shape, dimensions, size relationship, etc. of each component part of the tape-fastened absorbent article 50.

[0015] The tape-fastened absorbent article 50 of this embodiment is a tape-fastened absorbent article (outer) composed of an exterior body 90 in which a front body 60 that mainly contacts the wearer's abdominal side, a crotch portion 70 that mainly contacts the wearer's crotch, and a back body 80 that mainly contacts the wearer's back side are connected in this order in the longitudinal direction. An absorbent body 1 is disposed on the skin-facing surface of the top sheet 10, mainly in the crotch portion 70, and a pair of three-dimensional gathers 40 are disposed on both widthwise sides of the skin-facing surface of the top sheet 10, extending longitudinally from the front body 60 through the crotch portion 70 to the back body 80. The three-dimensional gathers 40 include a gathered sheet 40b that expands in the width direction and extends in the longitudinal direction, and have a gathered sheet portion 41 with at least a free end 40a, which is the widthwise tip, standing up relative to the skin-side surface of the top sheet 10, root fixing portions 42 that are fixed to both widthwise sides of the skin-side surface of the top sheet 10 and extend in the longitudinal direction, and an adjustment portion 43 that is detachably provided to the gathered sheet 40b and is located widthwise inward of the root fixing portions 42 on the skin-side surface of the top sheet 10, for temporarily fixing the gathered sheet 40b and adjusting the widthwise dimension between the pair of three-dimensional gathers 40. The longitudinal dimension of the tape-fastened absorbent article 50 is, for example, in the range of 700 mm to 1100 mm, and the maximum width is in the range of 700 mm to 1500 mm, and the maximum width is in the range of 300 mm to 500 mm. The maximum width of the outer shape of the rear bodice 80 formed by the absorbent body 1 on the rear bodice 80 side is 300 mm or more and 500 mm or less.

[0016] According to this embodiment, First, by providing an adjustment part 43 (for example, a hook tape) that temporarily fastens the base of the upright gathers 40, the widthwise dimension between the upright gathers 40 can be adjusted; narrowing the widthwise dimension ensures the storage and fixation of small daytime urine absorption pads, and widening the widthwise dimension makes it possible to store and hold large nighttime inner pads (wide pads) properly and with easy replacement work. Secondly, if a triangular hook tape is used as the adjustment portion 43 and the hook tape is arranged so that it gradually widens from the inside to the outside in the width direction, the gathered sheet 40b of the three-dimensional gathers 40 and the adjustment portion 43 can be attached and detached with a light force, and replacement workability and fixed holding force can both be secured. Thirdly, when the adjustment portion (e.g., hook tape) is peeled off from the gathered sheet 40b to expand the widthwise dimension between the three-dimensional gathers 40 and store the large inner pad, the hook surface (engagement surface) of the hook tape facing the skin-side surface of the adjustment portion 43 engages with the exterior body 90 (exterior nonwoven fabric) placed on the clothing side of the large inner pad, thereby appropriately fixing and holding the position of the inner pad.

[0017] As described above, the tape-fastened absorbent article 50 of this embodiment has an outer shape formed by an exterior body 90 in which a front body 60, a crotch region 70, and a back body 80 are connected in this order in the longitudinal direction, and has an absorbent body 1, a top sheet 10, and three-dimensional gathers 40 on the skin-facing surface of the exterior body 90. The absorbent article 50 of this embodiment also includes a pair of side flaps 62 extending outward from both widthwise ends of the back body 80, a pair of side panels 63 fixed to widthwise intermediate portions of the side flaps 62 and extending outward on both widthwise sides, a pair of fastening tapes 64 arranged in the bifurcated tabs of the side panels 63, and a target tape (fixing member) 65 provided in a strip shape near the widthwise center near the longitudinal ends of the front body 60, and to which the fastening tapes 64 are fixed when the absorbent article 50 is worn. The absorbent body 1 is supported mainly on the skin-facing surface of the crotch region 70 and has a shape that is elongated in the longitudinal direction so as to cover the wearer's crotch region from the front and back of the body. In this embodiment, the outer shape of the tape-fastened absorbent article 50 is formed by an integrated outer body 90 that extends from the front body 60 through the crotch region 70 to the back body 80, but this is not limited thereto, and the front body 60 and the back body 80 may be separate bodies that are connected together by the absorbent body 1 to form an integrated tape-fastened absorbent article 50. Furthermore, the tape-fastened absorbent article 50 of this embodiment may be provided with end seal portions 44 at both longitudinal ends of the pair of three-dimensional gathers 40 on both sides in the width direction in order to improve the fixation of the three-dimensional gathers 40 to the top sheet 10 (FIG. 2(a)).

[0018] The widthwise dimension of the front body 60 is, for example, in the range of 380 mm to 790 mm, the widthwise dimension (maximum width dimension) of the back body 80 is, for example, in the range of 300 mm to 500 mm, and the widthwise dimension of the crotch region 70 is, 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 region 70 to fall within the above-mentioned ranges, a tape-fastened absorbent article 50 that can properly store the inner pad 51 can be obtained.

[0019] Below, each of the constituent members will be explained in the following order: 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.

[0020] <3D gathers> The pair of three-dimensional gathers 40 are provided on both widthwise sides of the skin-side surface of the top sheet 10, extending in the longitudinal direction from the front body region 60 through the crotch region 70 to the back body region 80. In the crotch region 70, the three-dimensional gathers 40 may be formed on the skin-side surface of the crotch region 70 and / or on the skin-side surface of the absorbent body 1. The three-dimensional gathers 40 include a gathered sheet 40b that expands in the widthwise direction and extends in the longitudinal direction, and are equipped with a gathered sheet portion 41 having at least a free end 40a, which is the widthwise tip, standing upright relative to the skin-side surface of the top sheet 10, root fixing portions 42 that are fixed to both widthwise sides of the skin-side surface of the top sheet 10 and extend in the longitudinal direction, and an adjustment portion 43 that is detachably provided on the non-skin-side surface of the gathered sheet 40b, is located widthwise inward of the root fixing portions 42 on the skin-side surface of the top sheet 10, temporarily fixes the gathered sheet 40b, and adjusts the widthwise dimension between the pair of three-dimensional gathers 40.

[0021] (Gathered sheet part) The gathered sheet portion 41 includes a gathered sheet 40b that expands in the width direction from the base fixing portion 42 and extends in the longitudinal direction along the base fixing portion 42. The widthwise tip of the gathered sheet 40b opposite the base fixing portion 42 is a free end 40a, and an elastic stretchable member (not shown) is disposed near the free end 40a so as to extend in the longitudinal direction along the free end 40a, so that the free end 40a stands upright relative to the skin-facing surface of the top sheet 10 and can be deformed to fit the wearer's body shape.

[0022] The gathered sheet 40b is a water-repellent and / or waterproof sheet, and is made of, for example, a nonwoven fabric. Any water-repellent and / or waterproof (liquid-impermeable) nonwoven fabric made of hydrophobic fibers can be used as the nonwoven fabric, without any particular limitations. Examples of the nonwoven fabric include spunbonded nonwoven fabric, meltblown nonwoven fabric, and composite nonwoven fabric (SMS nonwoven fabric) which is a spunbonded nonwoven fabric / meltblown nonwoven fabric / spunbonded nonwoven fabric laminate. The basis weight of the gathered sheet 40b is, for example, 13 g / m 2 More than 20g / m 2 The elastic stretchable member disposed in the longitudinal direction along the free end 40a may be, for example, a thread-, string- or band-shaped member made of natural rubber, synthetic rubber, polyurethane or the like.

[0023] (Base fixing part) The root fixing portions 42 are regions where the gathered sheet 40b is fixed on both widthwise sides of the top sheet 10 so as to extend in a substantially linear manner in the longitudinal direction. The gathered sheet 40b is fixed using a hot melt adhesive, heat fusion, or other methods. The widthwise dimension between the root fixing portions 42 on both widthwise sides is formed to be slightly larger than the widthwise dimension of a large-capacity wide pad for overnight use. The gathered sheet 40b may be fixed not only to the root fixing portions 42 but also to, for example, the non-skin side of the back sheet 30 in the absorbent core 20, both widthwise ends of the skin-facing surface of the back sheet 30, etc.

[0024] (adjustment section) As shown in FIGS. 1 and 2 , the adjustment portion 43 is detachably attached to the gathered sheet 40b, is located on the skin-side surface of the top sheet 10, widthwise inward of the root fixing portion 42, and temporarily fixes the gathered sheet 40b at a predetermined position by engaging with the non-skin side of the gathered sheet 40b, thereby adjusting the widthwise dimension between a pair of three-dimensional gathers 40 or between the root fixing portions 42 of the three-dimensional gathers 40. In this embodiment, the adjustment portion 43 is a hook tape, and the hook tape is fixed to the skin-side surface of the top sheet 10 so that its engaging surface faces the non-skin side of the gathered sheet 40b. This fixing is performed, for example, by a method using a hot melt adhesive, heat fusion, embossing, or the like. The adjustment portion 43 is not limited to the hook tape of this embodiment, and any material that can be fixed to the skin-side surface of the top sheet 10 and that can engage with the non-skin side of the gathered sheet 40b can be used without particular limitation.

[0025] In this embodiment, the adjustment portions 43 are four right-angled triangular hook tapes arranged at the four corners of a rectangular imaginary region extending from the region of the front body 60 adjacent to the crotch region 70 to the region of the back body 80 adjacent to the crotch region 70, with the hypotenuses of the right-angled triangular hook tapes facing inward in the longitudinal and width directions. Alternatively, the adjustment portions 43 may be arranged on the inner side in the width and length directions of an imaginary region connecting the end seal portions 44 arranged at the four corners near the longitudinal ends of the three-dimensional gathers 40. The number and arrangement of the hook tapes are not particularly limited. However, to ensure uniform force when inserting an inner pad into the tape-fastened absorbent article 50 of this embodiment, it is preferable to arrange four adjustment portions 43, preferably four triangular hook tapes, at the four corners of the rectangular imaginary region. The planar shape of the adjustment portions 43 is not particularly limited, but examples include triangles such as right-angled triangles and isosceles triangles. Such adjustment portions 43 are arranged at the four corners of the rectangular imaginary region so as to face each other in the width direction.

[0026] The triangular hook tape will be further described with reference to FIG. 3. In FIG. 3(a), W indicates the inside in the width direction, and N indicates the outside in the width direction. In this embodiment, the hook tape's engaging surface area becomes relatively smaller toward the inside in the width direction, resulting in smaller adhesive and peeling forces, making it easier to attach and remove the inner pad. Furthermore, the width direction is also the primary direction for inserting and removing the inner pad from the tape-fastened absorbent article 50. This improves operability when temporarily fastening and removing the three-dimensional gathers 40 according to the size of the inner pad, greatly reducing the risk of temporary fastening in the wrong position and reducing the caregiver's effort. Furthermore, the shape of the three-dimensional gathers 40 is reliably maintained by the overall force of the hook tape, allowing the three-dimensional gathers 40 to fully function.

[0027] In addition, in Figure 3(b), the width B of the gathered sheet 40b temporarily fixed by the adjustment unit 43 actually indicates the width from the inner widthwise end of the root fixing unit 41 to the outer widthwise end of the gathered sheet 40b temporarily fixed by the adjustment unit 43. Also, the width from the inner widthwise end of the root fixing unit 41 to the widthwise tip end (or free end 40a) of the gathered sheet portion 42 (or gathered sheet 40b) is represented by A in Figure 3(b). Here, when the width A is 100, the width B is preferably set to be 30 or more and 80 or less. If it is less than 30, the force fixing the three-dimensional gathers 40 is insufficient, and there is a risk that they may unintentionally peel off from the skin-facing surface of the top sheet 10, etc., and if it is more than 80, there is a risk that the adjustment unit 43 will be exposed when the three-dimensional gathers 40 shift, and may unexpectedly adhere to other members.

[0028] 4, the temporary fixing dimension by the adjustment portion 43 is adjusted to be relatively large, and the length between the temporary fixing portions of the three-dimensional gathers 40 is XY. Similarly, in Fig. 5, the temporary fixing dimension by the adjustment portion 43 is adjusted to be relatively small, and the length between the temporary fixing portions of the three-dimensional gathers 40 is XY. This makes it possible to insert a small inner pad (urine absorption pad) 51 for daytime use or a large inner pad 52 for nighttime use into the tape-fastened absorbent article 50, without feeling tight or constricted, and with little risk of slippage or leakage of bodily fluids.

[0029] <Front, crotch, and back> The front body 60 and the back body 80 are formed from an exterior body material including a nonwoven fabric, etc., at the front end (ventral end) and rear end (dorsal end) of the absorbent body 1. The crotch region 70 is interposed between the front body 60 and the back body 80, and is also formed from an exterior body material including a nonwoven fabric, etc.

[0030] In this embodiment, the front body section 60, the crotch section 70, and the back body section 80 each include an exterior nonwoven fabric sheet (not shown) positioned away from the wearer's skin, and a back sheet film (not shown) positioned close to the wearer's skin. The exterior body material consisting of the exterior nonwoven fabric sheet and the back sheet film is folded in half at the crotch section 70 along the center line of the absorbent body 1 with the absorbent body 1 on the inside, and the opposite side edges of the lower abdominal section and the back side section are connected. As a result, the exterior nonwoven fabric sheet forms a stretchable waist opening and a pair of leg openings, and the absorbent article 50 as a whole is configured into a detachable pants-like shape. When the absorbent article 50 is worn, the lower abdominal section covers the waist on the ventral side of the wearer, and the back side section 16 covers the waist on the dorsal side of the wearer.

[0031] A backsheet film, for example, is laminated on the inside of the exterior nonwoven fabric sheet to increase the strength of the front body 60, the back body 80, and the crotch region 70. The exterior nonwoven fabric sheet can be made of a nonwoven fabric containing fibers made of a thermoplastic resin such as polypropylene, polyester, or polyethylene. Specific examples of such nonwoven fabrics include thermal bonded nonwoven fabrics, air-through nonwoven fabrics, and spunbonded nonwoven fabrics. Of these, air-through nonwoven fabrics and spunbonded nonwoven fabrics are preferred. The basis weight of the nonwoven fabric is, for example, 15 g / m 2 More than 40g / m 2 The backsheet film may be any resin film, for example, a polyethylene film. The basis weight of the backsheet film is, for example, 10 g / m 2 ) or more 40g / m 2 ) is as follows.

[0032] <Side flaps and target tape> The absorbent article 50 of this embodiment has a pair of side flaps 62 formed on the lower abdominal portion of the backsheet film and both widthwise edge portions of the back-side portion 16, a side panel 63 provided on the widthwise edge portion of each side flap 62 on the free end side, which is the outer widthwise edge, of the back-side portion 16, and a bifurcated fastening tape 64 provided on the widthwise edge portion of the free end side, which is the outer widthwise edge, of the side panel 63. The absorbent article 50 of this embodiment also includes an embodiment that does not have the side flaps 62, the side panel 63, or the fastening tape 64. The side panel 63 and the fastening tape 64 may be formed from separate members or may be formed integrally. 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 their skin-facing side with fastening means made of hook members that form a hook-and-loop fastener for fastening the lower abdominal portion and the back-side portion 16, and a bifurcated tab may be provided at the tip of the outer edge of each fastening tape 64 in the width direction. The side panels 63 may be provided with perforations to allow separation. Meanwhile, a target tape 65 made of a loop member that forms a hook-and-loop fastener may be provided on the garment-facing surface of the lower abdominal portion. When the absorbent article 50 is put on a wearer, each fastening tape 64 is fixed to the target tape 65 made of a loop member that serves as fastening means. This allows the absorbent article 50 of this embodiment to be configured as a tape-fastened disposable diaper. However, the absorbent article 50 may also be configured as a pants-like integrated absorbent article 50 by connecting the front body section 60 and the back body section 80 at their widthwise ends at the waist. Furthermore, perforations 66 can be provided on the side panels 63 at or near the center in the longitudinal direction, allowing the side panels 63 to be manually cut and separated. This allows the tab portions to be separated longer from the perforations 66, allowing for a wider range of engagement positions to be selected freely. When worn, tension can be generated that allows the absorbent article 50 to fit appropriately to the wearer's body, depending on the wearer's body type.

[0033] The base material of the side flaps 62 may be a nonwoven fabric made of polyethylene, polypropylene, polystyrene, or the like, and these base materials may be used alone or in combination. The base materials of the side panels 63 and the fastening tape 64 may be a resin film or nonwoven fabric made of polyethylene, polypropylene, polystyrene, or the like, and these base materials may be used alone or in combination. The hook member refers to a hook-shaped protrusion among the components constituting the hook fastener, and the loop member refers to a densely raised loop-shaped member that pairs with the hook member. The hook fastener is composed of a pair of hook members and loop members. The absorbent article 50 can be worn, for example, by placing the back portion 16 against the wearer's back, bringing the lower abdomen toward the wearer's abdomen, and fastening the fastening tape 64 to the target tape 65. The perforations 66 may be formed by equally spaced slits approximately in the center of the length of the side panels 63.

[0034] <End seal part> An end seal portion 44 can be provided near the longitudinal ends of the skin-facing surface of the tape-fastened absorbent article 50, more specifically at each end (four corners) of the pair of three-dimensional gathers 40. The end seal portion 44 fixes the three-dimensional gathers 40 to the skin-facing surfaces of the top sheet 10 and / or the absorbent body 1, for example. The end seal portion 44 is made of, for example, a hot melt adhesive. The planar shape of the end seal portion 44 is not limited to the square (quadrilateral) of this embodiment, and may be, for example, a circle, a triangle, a hexagon, etc.

[0035] <Absorbent> As shown in FIG. 2, the absorbent body 1 has as its basic units a top sheet 10, an absorbent core 20, and a back sheet 30, which are layered from the skin side to the non-skin side. The absorbent body 1 may be divided into a front portion that mainly contacts the wearer's lower abdomen, a crotch portion that mainly contacts the wearer's crotch, and a rear portion that mainly contacts the wearer's buttocks. The absorbent body 1 of this embodiment has a pair of three-dimensional gathers 40 extending longitudinally near both ends of the width direction of the skin-side surface of the top sheet 10. The three-dimensional gathers 40 are as described above. Various known modifications can be made to the absorbent body 1. Below, the configuration of each component will be described in more detail in the order of the top sheet 10, absorbent core 20, back sheet 30, and three-dimensional gathers 40.

[0036] (Top sheet) The top sheet 10 is a liquid-permeable sheet-like substrate that allows bodily fluids to quickly pass through toward the absorbent sheet 90 and the absorbent core 20. Because the top sheet 10 may come into contact with the wearer's skin, a substrate that is soft to the touch and does not irritate the skin is preferred. Examples of such substrates include hydrophilic sheets, composite nonwoven fabrics that are laminates of the same or different hydrophilic sheets, apertured films such as apertured polyethylene films, and foamed films such as polyethylene foam and urethane foam. Examples of hydrophilic sheets include air-through nonwoven fabrics, thermal-bonded nonwoven fabrics, spunlace nonwoven fabrics, and spunbonded nonwoven fabrics made from synthetic fibers made of synthetic resins such as polypropylene and polyethylene, regenerated fibers such as rayon, and natural fibers such as cotton.

[0037] The surface of the top sheet 10 may be embossed or perforated to improve liquid permeability. The top sheet 10 may contain one or more of lotions, antioxidants, anti-inflammatory ingredients, pH adjusters, antibacterial agents, moisturizers, etc. to reduce irritation to the skin. The basis weight of the top sheet 10 is set to, for example, 15 g / m² from the viewpoints of strength, processability, and liquid wetting-back. 2 More than 40g / m 2The shape of the top sheet 10 is not particularly limited, and may be any shape that covers part or all of the absorbent core 20 necessary to guide body fluids to the reactive absorbent sheet 90 and the absorbent core 20 without leakage.

[0038] (Absorption core) The absorbent core 20 has a longitudinal dimension (maximum length) of, for example, 100 mm to 800 mm, 150 mm to 500 mm, or 270 mm to 500 mm. The widthwise dimension (maximum width) of the absorbent core 20 is, for example, 50 mm to 500 mm, 60 mm to 400 mm, or 70 mm to 105 mm. When the absorbent core 20 has an hourglass-shaped planar shape, the longitudinal dimension is 180 mm to 800 mm, the widthwise dimensions of the ventral and dorsal portions that contact the wearer's abdomen and back, respectively, are both 60 mm to 400 mm, and the widthwise dimension of the crotch portion that contacts the wearer's crotch is 90 mm to 250 mm. The absorbent core 20 may be embossed entirely or partially. Examples of the shape of the absorbent core 20 in a plan view include an hourglass shape, an I-shape, a rectangle, a rounded square with rounded corners, an oval, etc. The absorbent core 20 may be a laminate of an upper-layer absorbent body arranged in the upper layer (skin side) and a lower-layer absorbent body arranged in the lower layer (non-skin side).

[0039] The absorbent core 20 contains, for example, absorbent fibers and superabsorbent polymers (hereinafter also referred to as "SAP") as absorbent base materials.

[0040] (absorbent fiber) The absorbent fibers are not particularly limited as long as they are generally used in absorbent articles such as sanitary napkins, disposable diapers, and urine absorption pads, and examples thereof include fluff pulp, cotton, rayon, acetate, tissue, absorbent paper, and hydrophilic nonwoven fabrics. Among these, fluff pulp is preferred from the viewpoint of absorbency. Examples of fluff pulp include wood pulp (e.g., bleached coniferous kraft pulp (N-BKP) such as southern pine and Douglas fir), synthetic fibers, resin fibers, and cotton-like defibrated materials such as non-wood pulp. When fluff pulp is used as the absorbent fiber in the absorbent core 20, the basis weight of the absorbent fiber is, for example, 100 g / m 2 More than 800g / m 2 The following range or 325g / m 2 More than 615g / m 2 This allows the fabric to absorb more body fluids without compromising the feel against the skin.

[0041] (Superabsorbent polymer) The superabsorbent polymer (hereinafter also referred to as "SAP") is not particularly limited as long as it can absorb body fluids and prevent backflow, and examples thereof include polyacrylates, polyaspartates, (starch-acrylic acid) graft copolymers, (acrylic acid-vinyl alcohol) copolymers, (isobutylene-maleic anhydride) copolymers, and saponified products thereof. Among these, from the viewpoint of absorption per weight, polyacrylates are preferred, alkali metal polyacrylates are more preferred, and sodium polyacrylate is even more preferred. The superabsorbent polymers can be used alone or in combination of two or more.

[0042] The superabsorbent polymer is used in the form of particles, fibers, etc., but is preferably used in the form of particles from the viewpoint of ease of handling, etc. In this case, by avoiding the use of a finely powdered superabsorbent polymer that has poor flowability as a powder and using a superabsorbent polymer with a median particle size, basic absorption performance can be improved and the rough feel caused by the hardness of the absorbent core 20 can be reduced. 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.

[0043] The basis weight of the SAP in the absorbent core 20 is, for example, 60 g / m 2 More than 450g / m 2 The following range or 245g / m 2 More than 445g / m 2 The SAP basis weight is within the following range. By setting the SAP basis weight within the aforementioned range, gel blocking in the absorbent core 20 can be prevented and a large amount of body fluid can be absorbed by the absorbent core 20. Furthermore, in the absorbent core 20, the ratio of the weight of the superabsorbent polymer to the total weight of the absorbent core 20, i.e., weight of superabsorbent polymer / total weight of absorbent core 20 × 100 (%), is, for example, in the range of 15% by weight or more, or in the range of 15% by weight to 70% by weight.

[0044] In the absorbent core 20, the absorbent fibers and SAP may be in the form of a mixture of absorbent fibers and SAP particles, or may be in the form of a SAP sheet in which SAP particles are fixed between absorbent fibers.

[0045] (back seat) The backsheet 30 may be formed using a liquid-impermeable substrate that prevents body fluids held by the absorbent core 20 from wetting clothing. Examples of such substrates include resin films and composite sheets that are laminates of resin films and nonwoven fabrics. The nonwoven fabrics used in the composite sheets may be made by any method, and examples include single-layer nonwoven fabrics such as spunbonded nonwoven fabrics and meltblown nonwoven fabrics, composite nonwoven fabrics such as spunbonded nonwoven fabric / meltblown nonwoven fabric laminates and spunbonded nonwoven fabric / meltblown nonwoven fabric / spunbonded nonwoven fabric laminates, and composite materials thereof. Examples of resin films include polyester, polyvinyl alcohol, polyethylene, polypropylene, and composite films of polyethylene and polypropylene.

[0046] The basis weight of the back sheet 30 is, for example, 15 g / m from the viewpoint of strength and processability. 2 More than 60g / m 2 The range is as follows. In order to prevent stuffiness during wear, it is preferable that the back sheet 30 be breathable. To make the back sheet 30 breathable, for example, a filler may be blended into the resin film of the base material, or the back sheet 30 may be embossed. An example of the filler is calcium carbonate, and the blending method may be any known method without any restrictions.

[0047] <Method of manufacturing absorbent body> The absorbent body 1 can be manufactured by a known manufacturing method, for example, a manufacturing method including the steps of placing the absorbent core 20 between the top sheet 10 and the back sheet 30, and fixing the edges of the top sheet 10 to the edges of the back sheet 30 partially or entirely using a hot melt adhesive, heat embossing, ultrasonic embossing, high frequency embossing, etc. Leg gathers, waist gathers, side flaps, etc. can be provided as necessary.

[0048] <Method for manufacturing absorbent articles> The method for manufacturing the absorbent article 50 is not particularly limited, and any conventionally known method can be used, and examples thereof include a manufacturing method including the steps of preparing an exterior nonwoven fabric sheet and a back sheet film having predetermined shapes for the front body 60, crotch region 70, and back body 80, arranging an absorbent body 1 on the skin-facing surface of the exterior body material including the exterior nonwoven fabric sheet and the back sheet film, and further arranging a three-dimensional cashmere 40, and connecting the target tape 65 of the front body 60 and the fastening tape 64 of the back body 80. The fastening tape 64 may be prepared by previously adhering a fastening means to the surface of the base material of the side panel 63, cutting it to a predetermined shape to form the side panel 63, and joining this to the side flap 62.

[0049] The absorbent articles 51 and 52 housed in the absorbent article 50 according to this embodiment are pad products such as a daytime urine absorption pad and a nighttime highly absorbent wide pad with a high body fluid absorption capacity, and are configured similarly to the absorbent body 1 except that the absorber 1 has a two-layer structure with a skin side and a non-skin side, and are configured to include a top sheet 11, an absorbent core 21, a back sheet 31, and three-dimensional gathers 45. The top sheet 11 is similar to the top sheet 10 described above, and the absorbent core 21 is similar to the absorbent core 20 described above and may have two through-holes (not shown) extending in the longitudinal direction. The back sheet 31 is similar to the back sheet 30 described above, and the three-dimensional gathers 45 are similar to the three-dimensional gathers 40 except that the base portions are spaced equally apart and do not have an adjustment portion 43.

[0050] Although the present invention has been described above using 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 will be apparent to those skilled in the art that various modifications and improvements can be made to the above embodiments. Furthermore, it is clear from the claims that such modifications and improvements can also be included within the technical scope of the present invention. [Example]

[0051] The present embodiment will be described in more detail below with reference to examples and comparative examples.

[0052] (Examples 1 to 4 and Comparative Examples 1 to 3) An outer tape-fastened absorbent article (outer: spunbond, meltblown, spunbond nonwoven fabric) and (top sheet: spunbond nonwoven fabric) with the configuration shown in Table 1, an inner pad (large pad for nighttime use) with the configuration shown in Table 2, and an inner pad (small urine pad for daytime use) with the configuration shown in Table 3 were each manufactured and worn by 10 panelists for the following monitor evaluation. The results are shown in Table 4.

[0053] (Feeling of pressure and discomfort when worn for long periods of time) Ten panelists were asked to wear the mask overnight (8 hours or more, with an average of 10-14 hours), and were asked to report on whether they felt any pressure or discomfort, as well as their comfort (stiffness, sleep quality, pressure, pain). (Ease of replacement) Ten panelists, including caregivers who had worn and replaced the tape-fastened absorbent articles, were asked to respond to questions about the ease of replacing the inner tape-fastened urine pads after wearing them (whether the inner pad could be easily inserted into the tape fastening). (Whether or not there is a leak) Ten panelists were asked to answer whether care staff who had worn and replaced the above-mentioned tape-fastened absorbent articles had noticed any leakage or shifting or creases in the inner pad. The responses were evaluated according to the following criteria: ○: When 8 to 10 people answered "I didn't feel any pressure," "I didn't notice any leakage, slippage, or creases," and "It was easy to fasten the inner pad to the tape when replacing the inner pad." △: When 5 to 7 people answered "I didn't feel any pressure," "I didn't notice any leakage, slippage, or creases," and "It was easy to fasten the inner pad to the tape when replacing the inner pad." ×: When there are no or less than 4 people who said, "I didn't feel any pressure," "I didn't notice any leakage, slippage, or creases," or "It was easy to fasten the inner pad to the tape when replacing the inner pad." The results are shown in Table 4.

[0054] [Table 1]

[0055] [Table 2]

[0056] [Table 3]

[0057] [Table 4]

[0058] Examples 1 to 4 and Comparative Examples 1 to 3 were actually as follows. (Example 1) Good monitoring results were obtained. The three-dimensional gathers could be attached and detached with light force, making them easy to use and improving wearing accuracy. The small inner pad was able to maintain the correct position by fixing the absorbent position with the adjustment part. The large inner pad had three-dimensional gathers that spread widely and were easy to store, and the back of the inner pad engaged with the adjustment part, maintaining its position and allowing it to be worn without twisting. The adjustment part did not cause any discomfort when worn. (Example 2) The orientation of the adjustment part was changed. Similar good results were obtained. (Example 3) The shape of the adjustment part was changed.Similarly good results were obtained. (Example 4) The corners of the adjustable part were rounded. Similar good results were obtained. The adjustable part was found to be effective in preventing the edges from peeling off from the top sheet during repeated use. (Comparative Example 1) The adjustment part was circular. There was no problem with the fit, but the operation of peeling off the three-dimensional gathers when changing them was a little forceful, and when wearing a large inner pad, the holding force of the engagement was a little insufficient, causing leakage. (Comparative Example 2) The adjustment section was made square. The adhesive strength was too strong overall, making it difficult to remove the three-dimensional gathers when replacing them, and they would reattach to unintended places, reducing operability. The accuracy of fitting was reduced, resulting in slippage and leakage. The stiffness of the hook tape caused discomfort when wearing the mask. (Comparative Example 3) An embodiment without an adjustment section. Of course, the widthwise dimension between the standing gathers cannot be adjusted. [Explanation of symbols]

[0059] 1. Absorbent 10, 11 Top sheet 20, 21 Absorption core 30, 31 Back seat 40, 45 3D gathers 40a Free end 40b gathered sheet 41 Gathered sheet part 42 Base fixing part 43 Adjustment section 44 End seal part 50 Tape-fastened absorbent articles 51 Daytime urine pads 52 Wide pad for night use 60 Front 62 Side flap 63 Side Panel 64 Fastening Tape 65 Target Tape 66 perforations 70 Crotch 71 Anterior area 80 Back 81 Posterior area 90 Exterior body

Claims

1. A tape-fastened absorbent article comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed therebetween, The garment comprises an outer body in which a front body part that mainly contacts the wearer's abdominal side, a crotch part that mainly contacts the wearer's crotch area and supports the absorbent body, and a rear body part that mainly contacts the wearer's back side, all connected in this order in the longitudinal direction; a pair of fastening tapes that extend outward from both ends in the width direction of the rear body part; and fixing means for fixing the fastening tapes near the longitudinal ends of the front body part, The top sheet further has a pair of three-dimensional gathers extending lengthwise from the front body through the crotch portion to the back body on both sides in the width direction of the skin-side surface of the top sheet, The three-dimensional gathers are a gathered sheet portion including a gathered sheet that spreads in the width direction and extends in the length direction, and at least a free end that is a tip end in the width direction stands up relative to the skin side surface of the top sheet; root fixing portions fixed to both sides in the width direction of the skin side surface of the top sheet and extending in the length direction; an adjustment section that is detachably provided on the gathered sheet, that is located on the skin side surface of the top sheet inside the root fixing section in the width direction, that temporarily fixes the gathered sheet and adjusts the width dimension between the pair of three-dimensional gathers, The adjustment unit It has a right-angled triangular shape in plan view, A tape-fastened absorbent article, wherein the hypotenuses of the right-angled triangles in a plan view are arranged at the four corners of a rectangular imaginary area extending from the area close to the crotch portion of the front body to the area close to the crotch portion of the back body, so as to face inward in the length direction and inward in the width direction, respectively.

2. The tape-fastened absorbent article further has end seal portions at four corners near the longitudinal ends of the skin-side surface thereof, for fixing the ends of the three-dimensional gathers, The tape-fastened absorbent article according to claim 1 , wherein the adjustment portion is provided inside in the width direction and length direction of an imaginary area connecting the four corners of the end seal portion.

3. 3. A tape-fastened absorbent article as described in claim 1 or claim 2, wherein the temporary fixing position of the gathered sheet is set within a range of 30 to 80 from the widthwise inner end of the base fixing portion, when the length from the widthwise inner end of the base fixing portion to the widthwise tip end of the gathered sheet portion is 100.

4. 4. The tape-fastened absorbent article according to claim 1, wherein the adjustment portion is a hook tape, and the hook tape engages with the non-skin-side surface of the gathered sheet.

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