Absorbent article

Abstract

To provide a pad-type absorbent article hardly slipping down even when a weight increases after urinating.SOLUTION: A pad-type absorbent article 10 including a liquid permeable top sheet, a liquid impermeable back sheet 12, and an absorber 13 disposed between the top sheet and the back sheet 12 and used with it placed inside outerwear, the pad-type absorbent article includes: hook tapes 14 provided on both sides in a longitudinal direction of a non-skin side surface 10a of the absorbent article 10 and attachable to outerwear; fixing parts 17 on one end sides fixed to longitudinal ends of the non-skin side surface 10a of the absorbent article 10; belt-like tapes 15 provided in a folded state on longitudinal both sides of the non-skin side surface 10a of the absorbent article 10, and whose other end side can extend to the outside of the longitudinal end of the absorbent article 10 in the unfolded state unfolded by being extended from the folded state, where the tapes 15 have intermediate adhesive strength adhesive layers 19a on the skin side surface in the unfolded state.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present disclosure relates to absorbent articles. [Background technology]

[0002] In recent years, due to the increase in the elderly population and the shortage of caregivers, it is recommended to encourage elderly people to avoid becoming frail. A good example of this is guiding elderly people to the toilet so that they do not become bedridden and can maintain their daily activities as much as possible. There are many cases where bedridden people switch from tape-fastened paper diapers to pants-type paper diapers in order to undergo rehabilitation. When using pants-type paper diapers, from the standpoint of economy, it has become common to use pants pads (pad-type absorbent products) in combination with pants-type paper diapers as innerwear, and only the pants pads are changed after urination, and pants-type paper diapers are used repeatedly. Assistance is required to change the pants pads after urination, but due to the shortage of caregivers, products that have high absorbency and can withstand long-term use are increasing.

[0003] Patent Document 1 discloses a pad-type absorbent article. In this absorbent article, a slip-prevention tape is provided on the pad body. The clothing side (non-skin side) of the pad body is nonwoven fabric, one side of the slip-prevention tape is composed of a hook tape that can be attached to the nonwoven fabric on the clothing side of the pad body, and the other side of the slip-prevention tape is composed of an adhesive layer coated with an adhesive that can be attached to underwear. The slip-prevention tape has double-sided fastening means, so it can be fastened to both pants pads and outerwear such as underwear. For this reason, the position of the slip-prevention tape can be freely set to an appropriate position when worn, and when discarded, it can be repositioned to a position that closes the skin side to prevent soiling the surroundings, rolled up and fixed. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2011-182970 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, after repeated urination into a high-absorbency pant pad, the weight of the pant pad increases considerably, and when the wearer is in a standing position, the pant pad after absorption cannot be held by the outer pant-type disposable diaper, and there are many cases where the pant pad slips down. This is because, although outer pant-type disposable diapers are less likely to slip down if they are tight-fitting to the wearer, they are often worn in a looser size because they can cause a feeling of pressure depending on the wearer's body shape and posture. As a result, the pant-type disposable diaper slips down, making it difficult to move, and there is a risk that the effect of rehabilitation will be reduced.

[0006] Furthermore, if the pants-type disposable diaper slips down, the pants pad cannot be kept in the correct position, which can result in urine leakage outside the pants-type disposable diaper, which can cause a significant burden when cleaning up and getting changed.

[0007] For this reason, there is a demand for a pants pad-type absorbent article that is less likely to slip down even when the weight of the pants pad increases after urination.

[0008] In the pad-type absorbent article described in Patent Document 1, the slip-prevention tape can be removed from the pad body, increasing the freedom of the installation position of the slip-prevention tape, but because the slip-prevention tape separates from the pad body, the user is forced to adjust the slip-prevention tape to the optimal wearing position, which is troublesome for the user. Also, if the positions of the pad body and the multiple slip-prevention tapes are not appropriate, the hook tape part of the slip-prevention tape may inadvertently stick to underwear, or the hook tape part may come into contact with the skin and cause pain, which may actually reduce usability.

[0009] Therefore, an object of the present disclosure is to provide a pad-type absorbent article that is less likely to slip off even if its weight increases after urination. [Means for solving the problem]

[0010] In order to solve the above problems, a first aspect of the present invention is a pad-type absorbent article that is positioned inside an outer layer for use, comprising: a liquid-permeable top sheet that is positioned on the skin side when worn; a liquid-impermeable back sheet that is positioned on the non-skin side when worn; and an absorbent body that is positioned between the top sheet and the back sheet, and the pad-type absorbent article is equipped with attachment means that is provided on both longitudinal sides of the non-skin side of the absorbent article and that is attachable to the outer layer, and a band-shaped tape that has a fixing portion on one end that is fixed to the longitudinal end of the non-skin side of the absorbent article, and is provided in a folded state on both longitudinal sides of the non-skin side of the absorbent article, and in an unfolded state when extended from the folded state, the other end can extend outside the longitudinal end of the absorbent article, and the tape has an adhesive layer on the skin side in the unfolded state.

[0011] A second aspect of the present invention is an absorbent article of the first aspect described above, wherein the tape is provided in a total of four locations: on both sides in the width direction of one longitudinal side of the non-skin side of the absorbent article, and on both sides in the width direction of the other longitudinal side of the non-skin side of the absorbent article.

[0012] A third aspect of the present invention is an absorbent article according to the first or second aspect, wherein the fixing portion of the tape is positioned so as to overlap in the thickness direction with the longitudinal end portion of the absorbent body.

[0013] A fourth aspect of the present invention is the absorbent article according to the third aspect, wherein the area of ​​the fixing portion of the tape is 150 mm 2 More than 900mm 2 The following is the result.

[0014] A fifth aspect of the present invention is an absorbent article of the first aspect or the second aspect, wherein the longitudinal length of the absorbent article is 360 mm or more and 680 mm or less, the width direction length of the absorbent article is 120 mm or more and 180 mm or less, the longitudinal length of the absorbent body is 280 mm or more and 600 mm or less, the width direction length of the absorbent body is 90 mm or more and 160 mm or less, and the longitudinal length of the tape in the unfolded state is 200 mm or more and 400 mm or less.

[0015] A sixth aspect of the present invention is an absorbent article according to the first or second aspect, wherein the tensile strength at break of the bonded portion between the top sheet and the back sheet at a tensile speed of 500 mm / min is 750 gf / 75 mm or more and 2500 gf / 75 mm or less.

[0016] A seventh aspect of the present invention is an absorbent article according to the first aspect or the second aspect, wherein the main body of the tape is formed from polypropylene resin, the adhesive layer of the tape is made of a synthetic rubber-based adhesive, and the adhesive layer of the tape is pressure-attached to Kanakin No. 3 by rolling a roller back and forth once with a load of 2 kg, and after leaving it to stand for 2 hours or more under curing conditions of 23°C, 50% RH, the peel strength when peeled off at a tensile speed of 300 mm / min is 120 gf / 15 mm or more and 220 gf / 15 mm or less. Effect of the Invention

[0017] According to the present disclosure, it is possible to provide a pad-type absorbent article that is unlikely to slip off even if its weight increases after urination. [Brief description of the drawings]

[0018] [Figure 1] 1A and 1B are plan views of an absorbent article according to one embodiment of the present invention, in which (a) shows the state when viewed from the skin side, and (b) shows the state when viewed from the non-skin side. [Diagram 2] FIG. 2 is a cross-sectional view taken along line II-II of FIG. [Diagram 3] FIG. 3 is a cross-sectional view taken along line III-III of FIG. [Figure 4] FIG. 4 is an enlarged view of a portion IV in FIG. [Diagram 5] FIG. 2 is a plan view of the absorbent article from the non-skin side with the tape deployed. [Figure 6] 1A and 1B are explanatory diagrams showing the state in which the absorbent article is worn as an inner layer with the tape folded, where (a) shows the state as seen diagonally from the front, and (b) shows the state as seen from behind. [Figure 7] 1A and 1B are explanatory diagrams showing the state in which the tape is deployed and used to prevent slippage, where (a) shows the state as viewed from diagonally forward and (b) shows the state as viewed from behind. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, an absorbent article according to one embodiment of the present invention will be described with reference to the drawings.

[0020] FIG. 1 is a plan view of an absorbent article according to an embodiment of the present invention, where (a) shows a state seen from the skin side and (b) shows a state seen from the non-skin side. FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1(b). FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 1(b). FIG. 4 is an enlarged view of a portion IV in FIG. 3. FIG. 5 is a plan view of the absorbent article from the non-skin side in a state in which the tape is unfolded. The cross-sectional views in FIG. 2 to FIG. 4 show each member in a schematic manner. Also, in FIG. 3 and FIG. 4, the cover sheet is not shown. Also, each drawing does not specify the size relationship of the components of the absorbent article, and the dimensions of each component can be appropriately selected from a wide range depending on the purpose of the absorbent article, the age of the intended wearer, etc.

[0021] In this specification, wearing an absorbent article means a state in which the absorbent article is worn on the body, regardless of whether the absorbent article is worn before, during, or after the absorption of bodily fluids. The longitudinal direction means the longitudinal direction of the absorbent article, which is the direction along the front and back of the wearer when the absorbent article is worn, and is the direction along the arrow X in the figure. The width direction means the short side direction of the absorbent article, which is the direction intersecting (orthogonal to) the longitudinal direction, and is the direction along the arrow Y in the figure. The thickness direction of the absorbent article means the direction in which each component is laminated, and is the direction along the arrow Z in the figure. The "front side" means the direction that is the abdominal side of the wearer when the absorbent article is worn, and the "rear side" means the direction that is the dorsal side of the wearer. The "skin side" of each component of the absorbent article means the direction toward the wearer's body when the absorbent article is worn in the thickness direction, and is the direction toward which the arrow Z in the figure points. The "non-skin side" means the direction opposite to the skin side in the thickness direction, and is the direction opposite to the direction toward which the arrow Z in the figure points. The left and right directions refer to the left and right directions as seen from the wearer facing forward. The body fluids refer to liquids discharged from the body to the outside, such as urine, blood, and water in loose stools.

[0022] [Absorbent articles] As shown in Fig. 1 to Fig. 5, the absorbent article 10 according to this embodiment is a pad-type absorbent article that is attached to the inside of various paper diapers as outerwear and used as an innerwear. Examples of pad-type absorbent articles include light incontinence pads and urine absorption pads. The absorbent article 10 according to this embodiment can be suitably used as an absorbent article suitable for a high absorption capacity for long-term wear.

[0023] The shape of the absorbent article 10 is not particularly limited, but examples include a substantially rectangular shape, an hourglass shape, an oval shape, etc. In this embodiment, the absorbent article 10 has a substantially rectangular shape.

[0024] The longitudinal length (maximum length; the same applies below) L1 of the absorbent article 10 is not particularly limited, but is preferably, for example, 360 mm or more and 680 mm or less. The widthwise length W1 of the absorbent article 10 is not particularly limited, but is preferably, for example, 120 mm or more and 180 mm or less. By adjusting the dimensions of the absorbent article 10 to fall within the above ranges, pad products (pad-type absorbent articles) such as urine absorption pads with high absorbency in various forms can be easily obtained.

[0025] The absorbent article 10 comprises a liquid-permeable top sheet 11 positioned against the skin when worn, a liquid-impermeable back sheet 12 positioned against the skin when worn, an absorbent body 13 disposed between the top sheet 11 and the back sheet 12, a hook tape (attachment means) 14, and a strip-shaped tape 15. The top sheet 11 is disposed opposite the back sheet 12 with the absorbent body 13 in between. A part or the whole of the outer peripheral edge of the top sheet 11 is bonded to the back sheet 12. The absorbent article 10 of this embodiment further comprises three-dimensional gathers 16 and a cover sheet 20.

[0026] (Top sheet) The top sheet 11 is a liquid-permeable sheet-like member, and may be formed from a substrate having liquid permeability that allows bodily fluids to move to the absorbent body 13. Examples of the substrate include hydrophilic sheets, composite nonwoven fabrics that are laminates of the same or different hydrophilic sheets, open-ended films such as open-ended polyethylene films, and foamed films such as polyethylene foam and urethane foam. Examples of the hydrophilic sheets include air-through nonwoven fabrics, thermal bond nonwoven fabrics, spunlace nonwoven fabrics, spunbond nonwoven fabrics, and the like, which contain one or more of synthetic fibers made of synthetic resins such as polypropylene and polyethylene, regenerated fibers such as rayon, and natural fibers such as cotton.

[0027] From the viewpoint of improving liquid permeability, the surface of the top sheet 11 may be embossed or perforated according to a known method. From the viewpoint of reducing irritation to the skin, the top sheet 11 may contain one or more of lotions, antioxidants, anti-inflammatory ingredients, pH adjusters, antibacterial agents, moisturizers, etc. The shape of the top sheet 11 is not particularly limited, and may be any shape that covers a part or all of the absorbent body 13 so as to prevent leakage of bodily fluids guided to the absorbent body 13.

[0028] (Back seat) The back sheet 12 may be formed using a liquid-impermeable substrate so that the body fluid held by the absorbent 13 does not leak to the non-skin side, and is formed from a material such as a resin film or a composite sheet in which a resin film and a nonwoven fabric are laminated. The nonwoven fabric used in the composite sheet is not particularly limited in its manufacturing method, and examples thereof include composite nonwoven fabrics in which multiple identical and / or different nonwoven fabrics are laminated, such as spunbond nonwoven fabric, meltblown nonwoven fabric, spunbond nonwoven fabric / meltblown nonwoven fabric, spunbond nonwoven fabric / meltblown nonwoven fabric / spunbond nonwoven fabric, and composite materials thereof. Examples of the resin film include films of polyester, polyvinyl alcohol, polyethylene, polypropylene, etc., and composite films of polyethylene and polypropylene.

[0029] It is preferable that the back sheet 12 has breathability in order to prevent stuffiness during wearing. In order to provide the back sheet 12 with breathability, for example, a filler may be blended into the resin film of the base material, or the back sheet 12 may be embossed. An example of the filler is calcium carbonate, and the blending method may be any known method without limitation. For example, a porous (breathable) resin film can be obtained by kneading a resin and a filler, forming the resulting kneaded product into a film, and removing the filler from the resulting film.

[0030] (Absorbent) Examples of the absorbent body 13 include a fluff absorbent body containing absorbent fibers as a base material and a superabsorbent polymer (hereinafter sometimes referred to as "SAP") supported on the absorbent fibers, and a SAP sheet in which SAP particles are fixed between liquid absorbent sheets.

[0031] The absorbent fiber is not particularly limited as long as it is generally used in absorbent articles such as sanitary napkins, paper diapers, and urine pads, and examples thereof include fluff pulp, cotton, rayon, acetate, tissue, absorbent paper, hydrophilic nonwoven fabric, etc. Examples of fluff pulp include wood pulp (e.g., bleached coniferous kraft pulp (N-BKP) such as southern pine and Douglas fir), synthetic fiber, resin fiber, non-wood pulp, etc. that have been defibrated into a cotton-like state. Examples of the liquid absorbent sheet include sheets composed of one or more of the above absorbent fibers.

[0032] The superabsorbent polymer 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 saponification products thereof. Among these, from the viewpoint of absorption amount per weight, polyacrylates are preferred, polyacrylic acid alkali metal salts are more preferred, and polyacrylate sodium is even more preferred. The superabsorbent polymers can be used alone or in combination of two or more.

[0033] In the absorbent body 13, the absorbent fibers and SAP may be in the form of a mixture of SAP particles in the absorbent fibers, or SAP particles may be fixed between the absorbent fibers.

[0034] The shape of the absorbent body 13 is not particularly limited, and examples thereof include a rectangular shape, an hourglass shape, an I-shape, a rectangular shape with rounded corners, an oval shape, an ellipse shape that is long in one direction, etc. In this embodiment, the shape of the absorbent body 13 is a substantially rectangular shape. The absorbent body 13 may be used by stacking two or more layers.

[0035] The longitudinal length L2 of the absorber 13 is not particularly limited, but is preferably, for example, 280 mm or more and 600 mm or less. The widthwise length W2 of the absorber 13 is not particularly limited, but is preferably, for example, 90 mm or more and 160 mm or less. By adjusting the dimensions of the absorber 13 to fall within the above ranges, pad products (pad-type absorbent articles) such as urine absorption pads with high absorption capacity in various forms can be easily obtained.

[0036] (Cover sheet) The absorbent article 10 may have a cover sheet 20 that wraps the absorbent body 13 in order to prevent leakage of SAP particles from the absorbent body 13 and to stabilize the shape of the absorbent body 13. The base material of the cover sheet 20 may be any material that has hydrophilic properties, and examples of such base materials include hydrophilic nonwoven fabrics such as tissue, absorbent paper, airlaid nonwoven fabric, and spunbond nonwoven fabric. Among these, spunbond nonwoven fabric is preferable. In addition, when a plurality of cover sheets 20 are provided, the base materials of the plurality of cover sheets 20 may be the same or different. Although the cover sheet 20 is provided in this embodiment, the cover sheet 20 may not be provided.

[0037] (3D gathers) The three-dimensional gathers 16 are fixed to the skin side of the top sheet 11 along the longitudinal direction near both ends in the width direction of the absorbent article 10 in order to prevent, for example, lateral leakage of bodily fluids excreted by the wearer. The three-dimensional gathers 16 include a water-repellent and / or waterproof sheet member 16a and an elastic stretchable member 16b. Although the three-dimensional gathers 16 are provided in this embodiment, they may not be provided.

[0038] The sheet member 16a is a water-repellent and / or waterproof sheet, and is made of, for example, a nonwoven fabric. As the nonwoven fabric for the sheet member 16a, any water-repellent and / or waterproof (liquid-impermeable) nonwoven fabric made of hydrophobic fibers can be used without any particular limitation, and examples thereof include spunbond nonwoven fabric, meltblown nonwoven fabric, and composite nonwoven fabric (SMS nonwoven fabric) which is a spunbond nonwoven fabric / meltblown nonwoven fabric / spunbond nonwoven fabric laminate. In this embodiment, the sheet member 16a has an outer end (fixed end) in the width direction fixed to the vicinity of both ends in the width direction of the back sheet 12, a middle part in the width direction fixed to the vicinity of both ends in the width direction of the top sheet 11, and an inner end in the width direction being a free end having uprightness.

[0039] The elastic stretchable member 16b is disposed in the longitudinal direction near the free end (the other end) of the sheet member 16a, imparting upstanding property to the free end and enabling the free end of the sheet member 16a and its neighboring area to be deformed to fit the wearer's body shape. As the elastic stretchable member 16b, for example, a thread-, string- or band-shaped member made of natural rubber, synthetic rubber, polyurethane or the like can be appropriately used.

[0040] (Mounting Means) The hook tape 14 is a strip-shaped member having a plurality of hooks (not shown) on the non-skin side, and is capable of attaching the absorbent article 10 to the nonwoven fabric on the skin side of the pants-type paper diaper (outer) 1 (see Figs. 6 and 7). That is, the hook tape 14 functions as an attachment means that is detachable from the skin side of the pants-type paper diaper 1. As the hook tape 14, a tape that is generally used to fasten the waist of a tape-fastened diaper can be used. There is no particular limitation on the size of the hook tape 14. The "hook tape" may also be called a "mechanical tape" or a "mechanical hook tape", etc.

[0041] The hook tape 14 in this embodiment is formed in a rectangular shape elongated in the width direction, provided on both longitudinal sides of the non-skin side 10a of the absorbent article 10 (the non-skin side of the back sheet 12 in this embodiment), and fixed to the non-skin side 10a of the absorbent article 10. The hook tape 14 is provided symmetrically in the longitudinal direction on the non-skin side 10a of the absorbent article 10. The hook tape 14 in this embodiment is disposed at a position overlapping the absorbent body 13 in the thickness direction. In this embodiment, two hook tapes 14 are provided, but the number of hook tapes 14 provided is not limited to this. In this embodiment, the hook tape 14 is provided as the attachment means, but the attachment means is not limited to this. For example, an adhesive layer may be provided on the non-skin side 10a of the absorbent article 10, and the adhesive layer may function as the attachment means.

[0042] (tape) The strip-shaped tape 15 is a long tape extending in the longitudinal direction, and is provided on both longitudinal sides of the non-skin side 10a of the absorbent article 10 in a folded state (state shown in Figs. 1 to 4) as described below. One longitudinal end of the tape 15 is fixed to the longitudinal end of the non-skin side 10a of the absorbent article 10. In other words, the strip-shaped tape 15 has a fixing part 17 on one end side that is fixed to the longitudinal end of the non-skin side 10a of the absorbent article 10. The tape 15 can be brought from the folded state to an unfolded state (state shown in Fig. 5) in which the free end side (the other end side) is pulled and stretched linearly.

[0043] As shown in Fig. 5, the tape 15 provided on one side in the longitudinal direction of the absorbent article 10 (e.g., the upper side in Fig. 5) has an end (fixing part 17) on the other side in the longitudinal direction of the tape 15 (e.g., the lower side in Fig. 5) fixed to the absorbent article 10, and when the tape is in an unfolded state, the free end side extends to the outside of the one side beyond the end of the one side in the longitudinal direction of the absorbent article 10. Also, the tape 15 provided on the other side in the longitudinal direction of the absorbent article 10 has an end (fixing part 17) on the one side in the longitudinal direction of the tape 15 fixed to the absorbent article 10, and when the tape is in an unfolded state, the free end side extends to the outside of the other side beyond the end of the other side in the longitudinal direction of the absorbent article 10.

[0044] The length L3 of the tape 15 in the longitudinal direction (length in the unfolded state) is preferably 200 mm or more and 400 mm or less. The length W3 of the tape 15 in the width direction is preferably 15 mm or more and 25 mm or less. If the length L3 of the tape 15 in the longitudinal direction is shorter than 200 mm, there is a possibility that a sufficient length (length that can be pulled upward from the waist opening 1a of the pants-type disposable diaper 1 described later) cannot be secured in the unfolded state. On the other hand, if the length L3 of the tape 15 in the longitudinal direction is longer than 400 mm, there is a possibility that the tape 15 becomes bulky in the folded state or is too long in the unfolded state, which may reduce the workability when fixing the adhesive layer 19 on the tip side described later to the outerwear 2 (underwear, etc.). In addition, if the length W3 of the tape 15 in the width direction is shorter than 15 mm, there is a possibility that the tape 15 cannot be secured to have sufficient strength. On the other hand, if the width W3 of the tape 15 is longer than 25 mm, the tape 15 may become too bulky depending on the state of bending of the absorbent article 10, and may hinder the hook tape 14 from engaging.

[0045] As shown in Figs. 1 to 4, the tape 15 is provided in a folded state on the non-skin side 10a of the absorbent article 10. When the tape 15 is folded, for example, it can be folded back on one side in the longitudinal direction and then on the other side in the longitudinal direction, and this process can be repeated to form a layered folded state. The folded tape 15 is located inside the outer edge of the absorbent article 10 in a plan view. The fixed portion 17 of the folded tape 15 is firmly fixed to the back sheet 12 by a synthetic rubber-based adhesive or the like (part indicated by dashed line 18 in Fig. 4). In addition, the layers of the tape 15 folded into layers are releasably bonded to each other by an adhesive layer 19 provided on the surface of the tape 15. Of the adhesive layer 19 provided on the surface of the tape 15, an intermediate adhesive strength adhesive layer (adhesive layer) 19a intended for fixing to clothing (outerwear 2 such as underwear (see FIG. 7) (hereinafter the same) is provided on the skin side of the free end of the tape 15 in the unfolded state (part shown by dashed line 19a in FIG. 4), and a weak adhesive layer 19b capable of bonding each layer of the tape 15 folded into layers is provided in other areas (part shown by dashed line 19b in FIG. 4). That is, the tape 15 has an adhesive layer (intermediate adhesive strength adhesive layer 19a) on the skin side in the unfolded state. No adhesive layer is provided on the surface of the tape 15 in the folded state (lower surface in FIG. 4). The "intermediate adhesive strength adhesive layer" means an adhesive layer intended for fixing to clothing, which is weaker than the adhesive strength of the fixing portion 17 of the tape 15 to the back sheet 12 side and stronger than the adhesive strength of the weak adhesive layer 19b that peelably bonds each layer of the tape 15 folded into layers.

[0046] The main body of the tape 15 is preferably made of polypropylene resin, and the intermediate adhesive strength adhesive layer 19a of the tape 15 is preferably made of a synthetic rubber adhesive. The intermediate adhesive strength adhesive layer 19a of the tape 15 is placed on the Kanakin No. 3 and a roller is moved back and forth from above with a load of 2 kg to pressurize and attach the intermediate adhesive strength adhesive layer 19a of the tape 15 to the Kanakin No. 3. After leaving the intermediate adhesive strength adhesive layer 19a of the tape 15 to stand for 2 hours or more under curing conditions of 23°C, 50% RH, the peel strength of the intermediate adhesive strength adhesive layer 19a of the tape 15 peeled off from the Kanakin No. 3 at a pulling speed of 300 mm / min is preferably 120 gf / 15 mm or more and 220 gf / 15 mm or less. If the peel strength of the intermediate adhesive strength adhesive layer 19a of the tape 15 when peeled off from the Kanakin No. 3 is lower than 120 gf / 15 mm, there is a possibility that the adhesive strength of the adhesive layer 19 required to hold the main body (pad) of the absorbent article 10 whose weight has increased after urination cannot be sufficiently secured. On the other hand, if the peel strength when peeling the intermediate adhesive strength adhesive layer 19a of the tape 15 from Kanakin No. 3 is made higher than 220 gf / 15 mm, the adhesive strength may be too strong for elderly people and women to easily peel off the adhesive layer 19 from clothing after use.

[0047] The peel strength when peeling the intermediate adhesive strength adhesive layer 19a of the tape 15 from Kanakin No. 3 can be measured, for example, using a Tensilon universal testing machine (e.g., A&D Co., Ltd.'s benchtop material testing machine STB-1225S) and analysis software (e.g., A&D Co., Ltd.'s general-purpose testing machine data processing system TACT). When measuring, first, a sample of the tape 15 with a width of 15 mm is used, the intermediate adhesive strength adhesive layer 19a of the sample is placed on Kanakin No. 3, and a roller is moved back and forth from above with a load of 2 kg to pressurize the intermediate adhesive strength adhesive layer 19a of the sample onto Kanakin No. 3, and the sample is left to stand for more than 2 hours under curing conditions of 23°C and 50% RH. Next, the distance between the chucks of the Tensilon universal testing machine is set to 100 mm, and the sample and Kanakin No. 3 after standing are set between the chucks. When the above sample and Kanakin No. 3 are set between the chucks, they are set so that the above sample, Tape 15, and Kanakin No. 3, are pulled in the direction in which they peel off. Then, the above sample, Tape 15, and Kanakin No. 3, are pulled at a pulling speed of 300 mm / min, and in the peel strength chart drawn by the above analysis software, a range where the peel strength is stable and flat is selected, and the average value within that range is measured as the peel strength.

[0048] At least one tape 15 may be provided on one side in the longitudinal direction of the non-skin side 10a of the absorbent article 10, for a total of two on both sides, but it is preferable to provide two on one side in the longitudinal direction, for a total of four on both sides, as in this embodiment. The tapes 15 in this embodiment are provided in a total of four locations: on both sides in the width direction of one side in the longitudinal direction of the non-skin side 10a of the absorbent article 10, and on both sides in the width direction of the other side in the longitudinal direction of the non-skin side 10a of the absorbent article 10.

[0049] The fixing parts 17 of the tapes 15 are preferably arranged at positions overlapping the longitudinal ends of the absorbent body 13 in the thickness direction. The fixing parts 17 of the four tapes 15 in this embodiment are arranged at positions overlapping each corner of the rectangular absorbent body 13 in the thickness direction. The fixing parts 17 of the four tapes 15 in this embodiment are also arranged outside the hook tapes 14 in the longitudinal direction (in the direction away from the center). The fixing parts 17 of the tapes 15 may be arranged at positions not overlapping the longitudinal ends of the absorbent body 13 in the thickness direction.

[0050] The area of ​​the fixed portion 17 of the tape 15 (the area of ​​the portion indicated by the diagonal lines in FIG. 5) is 150 mm 2 More than 900mm 2 For example, when the width W3 of the tape 15 is set to 15 mm, the length L4 of the fixing portion 17 in the longitudinal direction is preferably 10 mm or more and 60 mm or less. 2 If the area of ​​the fixing portion 17 of the tape 15 is smaller than 900 mm2, the weight of the absorbent article 10 described below may not be supported by the fixing portion 17 of the tape 15. 2 If it is larger than this, the portion overlapping with the absorbent body 13 will be wider, resulting in increased rigidity and possibly reducing the wearing comfort.

[0051] (Tensile strength of the bonded portion between the top sheet and the back sheet) The tensile strength at break of the bonding portion (outer peripheral portion) of the top sheet 11 and the back sheet 12 at a tensile speed of 500 mm / min is preferably 750 gf / 75 mm or more and 2500 gf / 75 mm or less. If the tensile strength of the bonding portion of the top sheet 11 and the back sheet 12 is lower than 750 gf / 75 mm, it may not be possible to ensure the strength and rigidity required to hold the main body of the absorbent article 10 in an appropriate wearing shape when the tape 15 is attached to clothing and the main body (pad) of the absorbent article 10 is held after the load increase due to urination, as described below. On the other hand, if the tensile strength of the bonding portion of the top sheet 11 and the back sheet 12 is higher than 2500 gf / 75 mm, the main body (pad) of the absorbent article 10 may become too bulky and rigid, resulting in a poor wearing feeling.

[0052] The tensile strength of the bonded portion of the top sheet 11 and the back sheet 12 can be measured with a Tensilon universal testing machine by preparing a 75 mm wide sample of the bonded top sheet 11 and the back sheet 12. The distance between the chucks of the Tensilon universal testing machine is, for example, 20 mm, and the sample is set between the chucks and pulled at a pulling speed of 500 mm / min, and the maximum tensile strength at break is measured as the tensile strength.

[0053] (How to use) Next, an example of a method of using the absorbent article 10 will be described.

[0054] Fig. 6 is an explanatory diagram showing a state in which the absorbent article is worn as an innerwear with the tape folded, (a) showing a state seen from diagonally front and (b) showing a state seen from behind. Fig. 7 is an explanatory diagram showing a state in which the tape is unfolded and used as a slip prevention device, (a) showing a state seen from diagonally front and (b) showing a state seen from behind.

[0055] As shown in Fig. 7, the absorbent article 10 according to the present disclosure is used by being placed inside a pants-type paper diaper (outer) 1. The absorbent article 10 is attached to the skin side of the pants-type paper diaper 1 using front and rear hook tapes 14 (on both sides in the longitudinal direction). As shown in Fig. 7, when no body fluids such as urine have been absorbed, or when a small amount of body fluid has been absorbed but the weight of the absorbent article 10 does not cause the pants-type paper diaper 1 to slip down, the absorbent article 10 can be used with the tapes 15 folded.

[0056] 8, at the time of large-amount absorption when a large amount of body fluid has been absorbed and the weight has become heavy after repeated urination, the free ends of the front and rear tapes 15 (on both longitudinal sides) are pulled upward from the waist opening 1a of the pants-type disposable diaper 1, changing the tape 15 from a folded state to an unfolded state. Then, the intermediate adhesive strength adhesive layer 19a on the free end side of the tape 15 is attached to the surface of the outerwear 2 (underwear, etc.) on the abdominal and back sides, and the absorbent article 10 can be used.

[0057] In the absorbent article 10 configured as above, the strip-shaped tape 15 is provided on both sides in the longitudinal direction of the non-skin side 10a of the absorbent article 10. The free end side (other end side) of the strip-shaped tape 15 can extend outward beyond the longitudinal end of the absorbent article 10 in the unfolded state, and has an adhesive layer (intermediate adhesive strength adhesive layer 19a) on the skin side in the unfolded state. Therefore, when absorbing a large amount of urine or the like repeatedly, the front and rear tapes 15 (on both sides in the longitudinal direction) can be unfolded and the intermediate adhesive strength adhesive layer 19a on the free end side of the tape 15 can be attached to the surface of the outerwear 2 such as underwear. By attaching the intermediate adhesive strength adhesive layer 19a on the free end side of the unfolded tape 15 to the surface of the outerwear 2, the front and rear of the absorbent article 10 can be supported from the outerwear 2 side during large absorption, so that the absorbent article 10 and the pants-type disposable diaper 1 can be prevented from slipping down due to the weight of the absorbent article 10.

[0058] In addition, since the absorbent article 10 and the pants-type paper diaper 1 can be prevented from slipping off, a decrease in the effectiveness of rehabilitation for elderly people and others who are engaged in rehabilitation can be prevented, unlike when the pants-type paper diaper 1 slips off and makes it difficult to move.

[0059] In addition, since the absorbent article 10 and the pants-type disposable diaper 1 can be prevented from slipping down, the absorbent article 10 can be maintained in an appropriate position, thereby preventing urine leakage caused by the absorbent article 10 slipping down.

[0060] Furthermore, since the attachment means (hook tape 14 in this embodiment) is provided on both longitudinal sides of the non-skin side 10a of the absorbent article 10, it is possible to prevent the absorbent article 10 from slipping off the pants-type paper diaper (outer) 1 when used as an inner layer.

[0061] Furthermore, during large absorption, the intermediate adhesive strength adhesive layer 19a on the free end side of the tape 15 can be attached to the surface of outerwear 2 such as underwear, so that the tape 15 can be hidden by wearing clothing over the underwear (outerwear 2). In this way, the tape 15 of the absorbent article 10 can be hidden from the eyes of others, so that it is possible to prevent others from noticing through the tape 15 that the wearer is wearing the absorbent article 10 as an inner layer and the pants-type disposable diaper 1 as an outer layer, and thus to avoid damaging the dignity of the wearer.

[0062] Furthermore, since the strip-shaped tape 15 is provided in a folded state in the absorbent article 10, when no absorbent liquid has been absorbed or only a small amount of absorbent liquid has been absorbed, the absorbent article 10 can be used with the tape 15 folded. This allows the long strip-shaped tape 15 to be compactly packed, and prevents the tape 15 from adhering to other parts of the pants-type disposable diaper 1, etc. when no absorbent liquid has been absorbed or only a small amount of absorbent liquid has been absorbed.

[0063] Thus, according to this embodiment, it is possible to provide a pad-type absorbent article 10 that is unlikely to slip off even if its weight increases after urination.

[0064] Furthermore, when replacing the absorbent article 10, the used absorbent article 10 can be secured by wrapping it with tape 15, so that the used absorbent article 10 can be disposed of compactly and hygienically.

[0065] Furthermore, by providing tape 15 at a total of four locations, on both sides in the width direction of one longitudinal side of non-skin side 10a of absorbent article 10 and on both sides in the width direction of the other longitudinal side of non-skin side 10a of absorbent article 10, it is possible to support the front and rear of absorbent article 10 from the outerwear 2 side when absorbing a large amount in a balanced manner not only on the front and rear but also on the left and right.

[0066] Furthermore, by positioning the fixing portion 17 of the tape 15 at a position where it overlaps the longitudinal end of the absorbent body 13 in the thickness direction, the fixing portion 17 of the tape 15 can be positioned at the same height as the absorbent body 13 when worn, so that the absorbent body 13, which becomes heavy when absorbing a large amount, can be effectively supported from above.

[0067] In this embodiment, the outer layer is a pants-type paper diaper, but the present invention is not limited to this. For example, the outer layer may be a tape-fastened paper diaper or underwear.

[0068] Although the present invention has been described based on the above embodiment, the present invention is not limited to the contents of the above embodiment, and can be modified as appropriate without departing from the scope of the present invention. In other words, all other embodiments, examples, and operational techniques made by those skilled in the art based on this embodiment are naturally included in the scope of the present invention. [Explanation of symbols]

[0069] 1: Pants-type disposable diapers (outerwear) 10: Absorbent articles 11: Top sheet 12: Back seat 13: Absorbent 14: Hook tape (attachment means) 15: Tape 17: Fixed part 19a: Intermediate adhesion strength Adhesive layer (adhesive layer)

Claims

1. A pad-type absorbent article comprising a liquid-permeable top sheet positioned against the skin when worn, a liquid-impermeable back sheet positioned against the skin when worn, and an absorbent body disposed between the top sheet and the back sheet, the pad-type absorbent article being disposed inside an outer layer when worn, attachment means provided on both longitudinal sides of the non-skin side of the absorbent article and attachable to the outer; a band-shaped tape having a fixing portion on one end side that is fixed to an end in a longitudinal direction of the non-skin side of the absorbent article, the band-shaped tape being provided in a folded state on both sides in the longitudinal direction of the non-skin side of the absorbent article, and the other end side being capable of extending outward beyond the end in the longitudinal direction of the absorbent article when extended and unfolded from the folded state; The tape has an adhesive layer on the skin side in the unfolded state. An absorbent article characterized by:

2. The tape is provided at four locations in total, on both sides in the width direction of one side of the non-skin side of the absorbent article in the longitudinal direction, and on both sides in the width direction of the other side of the non-skin side of the absorbent article in the longitudinal direction.

2. The absorbent article according to claim 1.

3. The fixing portion of the tape is disposed at a position overlapping an end portion of the absorbent body in the longitudinal direction in the thickness direction.

3. The absorbent article according to claim 1 or 2.

4. The area of ​​the fixed portion of the tape is 150 mm ２ More than 900 mm ２ Is less than or equal to 4. The absorbent article according to claim 3.

5. The length of the absorbent article in the longitudinal direction is 360 mm or more and 680 mm or less, The length of the absorbent article in the width direction is 120 mm or more and 180 mm or less, The length of the absorbent body in the longitudinal direction is 280 mm or more and 600 mm or less, The length of the absorbent body in the width direction is 90 mm or more and 160 mm or less, The length of the tape in the expanded state in the longitudinal direction is 200 mm or more and 400 mm or less.

3. The absorbent article according to claim 1 or 2.

6. The tensile strength at break of the bonded portion between the top sheet and the back sheet at a tensile speed of 500 mm / min is 750 gf / 75 mm or more and 2500 gf / 75 mm or less.

3. The absorbent article according to claim 1 or 2.

7. The main body of the tape is formed of polypropylene resin, The adhesive layer of the tape is made of a synthetic rubber adhesive, The adhesive layer of the tape is applied to Kanakin No. 3 by pressing it back and forth with a roller at a load of 2 kg, and after curing under conditions of 23°C, 50% RH for 2 hours or more, the tape is peeled off at a tensile speed of 300 mm / min. The peel strength is 120 gf / 15 mm or more and 220 gf / 15 mm or less.

3. The absorbent article according to claim 1 or 2.

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