JP6198610B2 - Disposable pants-type wearing articles - Google Patents

Description

The present disclosure relates to a disposable pant-type wearing article, and more particularly to a disposable pant-type diaper having a tape fastener.

  Conventionally, disposable pants-type wearing articles having tape fasteners are known. For example, Patent Document 1 discloses a disposable pant having a plurality of waist elastic bodies disposed in the front and rear waist regions, and having a pair of tape fasteners disposed between the waist opening and the leg opening in the rear waist region. A wearing article of a mold is disclosed. The tape fastener has a proximal portion that is fixed to the rear waist region through a bonding region to which an adhesive is applied, and a distal portion that is hooked in a folded state in the proximal portion.

Japanese Utility Model Publication No. 6-77719

  According to the wearing article disclosed in Patent Document 1, by using a tape fastener during wearing, it is possible to adjust the size around the waist to fit wearers of various sizes and prevent slipping off. In addition, after wearing, it is possible to dispose hygienically by rounding the worn article so as to wrap the excrement and fixing it so as to maintain the rounded state with the tape fastener. Further, the tape fastener is a sheet material similar to that of the back sheet, is formed from a liquid-impermeable sheet having moisture permeability, and has flexibility.

  However, in the tape fastener of such a wearing article, since the tape fastener itself is formed from a relatively flexible sheet material, in the state where the tape fastener is hooked on the outer surface of the front waist region, the waist elastic body contracts. When the proximal part undulates together with the rear waist area due to force and the distal part is pulled backward, the distal part can not resist the force applied and becomes deformed and easily warps, and the latch is released It becomes easy to be done. In addition, when the diaper is rolled up and discarded after use, the overall thickness (bulk) of the diaper is increased by absorbing bodily fluids, so it is difficult to fold and maintain a stable folded state. In addition, the tape fastener needs to be latched while being pulled with a relatively strong force, and the latched portion is easily released by a force acting to peel it off. In order to prevent such disadvantages, it is conceivable to increase the amount of adhesive used in the joining area, or to form the entire tape fastener with a more rigid sheet material. The contraction by the waist elastic body at the position becomes insufficient, and the fastening force by the tape fastener may be reduced.

An object of the present invention is an improvement of the prior art, in which a tape fastener is formed from a relatively flexible sheet material, the proximal portion is easily deformed, and the distal portion is stably latched. The present invention relates to provision of disposable pants-type wearing articles.

  The present invention has a longitudinal direction and a lateral direction perpendicular thereto, and is the skin facing surface and the non-skin facing surface on the opposite side thereof, the first waist region that is one of the front and back waist regions, and the other of the front and back waist regions. Including a second waist region and a crotch region located between the first and second waist regions, and side edges extending in the longitudinal direction in the first and second waist regions are overlapped and joined, The present invention relates to a disposable pants-type wearing article to which a tape fastener is attached in one waist region.

In the disposable pants-type wearing article of the present invention, at least the first waist region of the first and second waist regions has elasticity in the lateral direction, and the tape fastener is formed from a fiber nonwoven fabric sheet. And having a length direction in a non-deployed state and a width direction perpendicular thereto, opposite side edges in the width direction, a proximal portion fixed to the first waist region, and the tape in a deployed state A distal portion having a latching area for releasably latching the fastener to the non-skin facing surface of the second waist area, and between the proximal part and the latching area, the rigidity in a direction both side edges to each other of the tape fastener approaches are formed high rigidity region greater than the proximal portion, said tape fastener base Sea defining said proximal portion and said distal portion Has, the high-rigidity region is formed by laminating the auxiliary sheet pieces to the base sheet.

  According to one or more embodiments of the disposable pants-type wearing article according to the present invention, the proximal portion of the distal portion of the tape fastener and the latching area are more rigid than the proximal portion. Since the high-rigidity area is formed, the proximal part flexibly deforms with the rear waist area, while the force to peel it off against the latching area is suppressed, and the distal part turns back. Therefore, there is no risk that the latch will be released unexpectedly.

The drawings illustrate specific embodiments of the invention and include selective and preferred embodiments as well as the essential features of the invention.
The perspective view of the disposable diaper seen from the back side shown as an example of the disposable pants type wearing article in a 1st embodiment of the present invention. The partially broken expansion | deployment top view which looked at the state which peeled the side seam part of the diaper and extended in the front-back direction from the inner surface. The exploded perspective view of a diaper. FIG. 4 is a schematic cross-sectional view taken along IV-IV in FIG. 2. The typical sectional view which meets the VV line of Drawing 1. The perspective view of the diaper seen from the front side which shows the use condition of a tape fastener. Sectional drawing which follows the VII-VII of FIG. The figure which shows the state which rolled the diaper using the tape fastener. The perspective view similar to FIG. 1 which shows an example of the example of a change of a tape fastener. The figure similar to FIG. 8 which shows an example of the example of a change of a tape fastener. The figure similar to FIG. 5 of the diaper in 2nd Embodiment. The figure similar to FIG. 5 of the diaper in 3rd Embodiment. The figure similar to FIG. 5 of the diaper in 4th Embodiment. The figure similar to FIG. 5 of the diaper in 5th Embodiment. The figure similar to FIG. 5 of the diaper in 6th Embodiment. The figure similar to FIG. 1 of the diaper in 7th Embodiment.

<First Embodiment>
1-3, the disposable diaper 10 shown as an example of the disposable pants-type wearing article of this invention has the vertical direction Y and the horizontal direction X orthogonal to it, the vertical axis P, and the horizontal axis Q orthogonal to it. Have.

  The diaper 10 includes a skin-facing surface and a non-skin-facing surface facing the skin, an annular elastic waist panel 11 extending in the direction around the waist, an absorbent chassis 12 joined to the elastic waist panel 11, and a front waist region (first waist). Or one of the second waist regions) 13, a rear waist region (the other of the first or second waist regions) 14, and a crotch region 15 positioned between the front and rear waist regions 13, 14. The diaper 10 is formed symmetrically with respect to the longitudinal axis P, and the elastic waist panel 11 includes a front waist panel 16 located in the front waist region 13 and a rear waist panel 17 located in the rear waist region 14. . Tape fasteners 20 are respectively attached to the outer surfaces of both side portions 18 of the rear waist panel 17. Here, “both side portions 18 of the rear waist region 14” mean portions from both side edges 14 c and 14 d of the rear waist region 14 to both side edges of the absorbent chassis 12.

  The front waist region 13 includes an inner end edge 13a extending in the horizontal direction X, an outer end edge 13b extending in the horizontal direction X so as to be opposed to the inner end edge 13a in the vertical direction Y, and a vertical distance between the inner and outer end edges 13a and 13b. It has a horizontally long rectangular shape defined by both side edges 13c and 13d extending in the direction Y.

  The rear waist region 14 includes an intermediate inner end edge 14a extending in the horizontal direction X, an outer end edge 14b extending in the horizontal direction X while being spaced apart from the intermediate inner end edge 14a in the vertical direction Y, and an inner side from the outer end edge 14b. It has a substantially trapezoidal shape defined by both side edges 14c and 14d extending in a straight line, and both side inner edges 14e and 14f connecting the both side edges 14c and 14d and the intermediate inner edge 14a in a curved shape.

  Both side edges 13c, 13d of the front waist region 13 and both side edges 14c, 14d of the rear waist panel 14 are overlapped with each other and are connected by side seams 23 intermittently positioned in the longitudinal direction Y. An edge 19 is formed, and a waist opening 24 and a pair of leg openings are defined. The side seam 23 is made by a known joining means, for example, various heat welding means such as hot embossing / debossing and sonic processing. As shown in FIG. 5, the tape fastener 20 is fixed to a first end (free end) 20 a and a second end (fixed end) 20 b facing each other in the length direction, and both side portions 18 of the rear waist region 14. A distal portion (free portion) 22 and a proximal portion (fixed portion) 21 extending continuously with the distal portion 22 (see FIG. 5).

  In the present embodiment, the tape fastener 20 is attached to both side portions 18 of the rear waist region 14, but may be attached only to one side portion 18 as long as the effects of the present invention described later are exhibited. The front waist region 13 may be attached to both side edges or one of them.

  Referring to FIG. 3, the front waist panel 16 has a rectangular front waist sheet 25 that defines the front waist region 13. The front waist seat 25 extends in the horizontal direction X and is opposed to the inner and outer end edges 25a and 25b that are spaced apart from each other in the vertical direction Y, and both side edges 25c and 25d that extend in the vertical direction Y and are positioned between the inner and outer end edges 25a and 25b. Formed from. The front waist seat 25 further includes a bent portion 26 positioned on the outer side in the vertical direction from the front end portion 12a of the absorbent chassis 12, and the bent portion 26 is vertically extended along a bent line 26a extending in the lateral direction X. It is bent inward in the direction Y and fixed to the front elastic sheet 48 and the absorbent chassis 12 described later. Between the main part 27 and the bent part 26 located inward from the bent part 26 of the front waist sheet 25, between the main part 27 and the front elastic sheet 48, a plurality of strands or strings are formed. The front waist elastic body 28 is fixed so as to be contractible in an extended state in the lateral direction X.

  The rear waist panel 17 has a trapezoidal rear waist sheet 30 that defines the rear waist region 14. The rear waist sheet 30 extends in the lateral direction X and is opposed to the intermediate inner edge 30a and the outer edge 30b that are spaced apart from each other in the longitudinal direction Y, both outer edges 30c, 30d extending in the longitudinal direction Y, both outer edges 30c, It is formed by concavely curved inner end edges 30e and 30f that connect 30d and the inner end edge 30a. The rear waist sheet 30 is positioned outside the main body 31, the rear end 12b of the absorbent chassis 12 in the longitudinal direction Y, and extends in the lateral direction X between the side edges 30c and 30d. The rear end of the absorbent chassis 12 is bent to the inner side of the rear waist seat 30 via an inner bent line (not shown) extending in the lateral direction X between the end edges 30e, 30f and the outer bent line 32. The outer bent portion 33 fixed to the inner surface of the portion 12 b and the inner surface of the main body portion 31, and bent to the inner surface side of the rear waist sheet 30 along the inner bent line, and fixed to the inner surface of the main body portion 31. And an inner bent portion 34.

  Between the main body portion 31 and the outer bent portion 33 of the rear waist sheet 30 and between the main body portion 31 and the rear elastic sheet 49 described later, a plurality of strand-shaped or string-shaped rear waist elastic bodies 35 are laterally disposed. It is arranged in the direction X so as to be retractable in an extended state. Further, in the inner bent portion 34, a collar elastic body 36 extending in the lateral direction X is disposed so as to be contracted in an extended state.

The front and rear waist sheets 25 and 30 have a mass of about 10 to 40 g / m ² and a fiber density of about 0.03 to 0.1 g / cm ³ , for example, a spunbond fiber nonwoven fabric, SMS (spunbond Meltblown / spunbond) fiber nonwoven fabric, air-through fiber nonwoven fabric, plastic sheet, or laminate sheet thereof can be used. The front and rear waist elastic bodies 28 and 35 and the buttocks elastic body 36 are, for example, a string shape having a thickness of about 300 to 800 dtex and an expansion ratio of 1.5 to 3.5 times in order to obtain a required contraction force or elongation stress. Where a strand-like elastic material can be used, its thickness and expansion ratio can be changed as appropriate.

  The absorbent chassis 12 has a rectangular shape and includes a front end portion 12a, a rear end portion 12b, and an intermediate portion 12c positioned between the front and rear end portions 12a and 12b. The absorptive chassis 12 is located on the skin facing surface side, and is a body side liner 40 made of a fiber nonwoven fabric having liquid permeability, a liquid absorbent absorber 41 having curved side edges, and a bottom surface of the absorber 41. The liquid-proof leak-proof sheet | seat 42 which covers the whole, and the liquid-impervious or hardly liquid-permeable covering sheet 43 which forms the whole non-skin opposing surface of the absorptive chassis 12 are included. The absorbent body 41 includes a core material formed from a mixture of fluff pulp and superabsorbent polymer particles, and a liquid-absorbing and diffusible core wrap sheet such as tissue paper covering the entire core material.

  The covering sheet 43 has both side portions 44 located on the outer side in the lateral direction X from both side edges of the leak-proof sheet 42. The both side portions 44 are bent inward along a folding line adjacent to both side edges of the leak-proof sheet 42 and fixed to the inner surface of the body side liner 40. Specifically, the both side portions 44 include both end fixing portions that are fixed to the body side liner 40 and spaced apart from each other in the longitudinal direction Y, both side fixing portions that are fixed to both side edges of the body side liner 40, and both end fixing portions. And a free part that is not fixed to the body side liner 40 extending in the longitudinal direction Y. The edge part (free edge part) 43a of the free part has a sleeve shape formed by bending the outer edge of the covering sheet 43, and the edge part 43a has a plurality of string-like or strand-like elastic bodies extending in the longitudinal direction Y. 45 is arrange | positioned so that it can shrink | contract in an expansion | extension state. When the elastic body 45 contracts, the edge portion 43a moves away from the body side liner 40 toward the wearer's body side, and fits the wearer's thigh to prevent leakage of excrement. A plurality of string-like or strand-like leg elastic bodies 46 are disposed between both side portions 44 of the covering sheet 43 and the leak-proof sheet 42.

  Front and rear elastic sheets 48 and 49 attached to the skin facing surfaces of the front and rear end portions 12a and 12b of the absorbent chassis 12 so as to be retractable in the lateral direction X are positioned. The front elastic sheet 48 has a horizontally long rectangular shape, and is fixed to the front waist sheet 25 and the absorbent chassis 12 that are located at least on the outer side in the lateral direction X with respect to both side edges of the absorbent chassis 12. The rear elastic sheet 49 has a substantially trapezoidal shape, and has a concave and concave shape that forms an intermediate inner edge and an outer edge facing each other in the vertical direction Y, both outer edges extending in the vertical direction, and both outer edges and inner edges. It is formed from both curved inner edges. The rear elastic sheet 49 is disposed so that both outer edges and both inner edges thereof overlap with a part of both outer edges 30c, 30d and both inner end edges 30e, 30f of the rear waist sheet 30. Between the rear elastic sheet 49 and the rear end portion 12b of the absorbent chassis 12, a plurality of string-like or strand-like elastic bodies 50 extending in the transverse direction X are disposed so as to be contracted in an extended state.

As the front and rear elastic sheets 48 and 49, for example, an elastic fiber nonwoven fabric made of elastomer fibers having a mass of about 30 to 40 g / m ² and a fiber density of 0.01 to 0.04 g / cm ³ is used. it can. The front and rear elastic sheets 48 and 49 are fixed to the front and rear waist sheets 25 and 30 and the absorbent chassis 12 in a state in which the front and rear elastic sheets 48 and 49 are extended by about 2.4 times in the lateral direction X as compared with the non-extended dimensions.

  Referring to FIG. 2, the rear waist region 14 includes at least the lateral direction X by the first elastic region 51 provided with elasticity in at least the lateral direction X by the rear waist elastic body 35, and the rear elastic sheet 49 and the elastic body 50. And a second elastic region 52 provided with elasticity. The proximal portion 21 (see FIG. 5) of the tape fastener 20 is located in the first elastic region 51 in the both side portions 18 of the rear waist region 14, and as described later, when the first elastic region 51 contracts, the contraction thereof occurs. It undulates by force. Here, the first elastic region 51 is a region where the rear waist elastic body 35 overlapping the proximal portion 21 of the tape fastener 20 in plan view is disposed, and the second elastic region 52 is the first elastic region. This means an elastic region located closer to the crotch region 15 than 51. In the first elastic region 51, all or at least one rear waist elastic body 35 continuously extends in the lateral direction X between both side edges 14c, 14d of the rear waist region 14, and a part of the first elastic region 51 is absorbent. It overlaps with the chassis 12 in plan view. In the present embodiment, the elastic body 50 in the second elastic region 52 extends continuously in the lateral direction as in the case of the rear waist elastic body 35, but is cut or substantially cut at a portion overlapping the absorbent chassis 12 in plan view. It is preferable to be in a state in which no contractile force is expressed (for example, a state in which the contraction force is extended 1.0 to 1.3 times). In such a case, the rear waist elastic body 35 of the first elastic region 51 fits the absorbent chassis 12 to the wearer's body by its contraction force, while the elastic body 50 of the second elastic region 52 is connected to the absorbent chassis 12. The contraction force does not directly act on the absorbent chassis 12 by being discontinuous in the overlapping portion, and the absorbent chassis 12 can be fitted along the shape of the wearer's body (bulging lower abdomen). The body fluid can be prevented from leaking from the gap formed between the body and the absorbent chassis 12. The first elastic region 51 and the second elastic region 52 have the same or different contraction force or elongation stress, fit the diaper 10 without pressing the lower abdomen of the wearer, and at the time of wearing In order to prevent sliding down or the like, it is preferable that the contraction force or elongation stress of the second elastic region 52 is higher than that of the first elastic region 51.

  Referring to FIG. 5, the pair of tape fasteners 20 fixed to the outer surface of the rear waist region 14 includes a base sheet 58 that is a piece of tape folded in a Z-shaped cross section. The tape fastener 20 has a proximal portion 21 fixed to the outer surface of the rear waist region 14 through a joining region 60 so as not to be peeled off, and a distal portion 22. The distal portion 22 includes a first distal portion 61 that faces the proximal portion 21 in the thickness direction of the tape fastener 20, and a second distal portion 62 that continues to the first distal portion 61 and faces it in the thickness direction. And have. The proximal portion 21, the first and second distal portions 61, 62 are temporarily fixed portions (first and second temporary fixed portions) located at the first and second bent portions 55, 56 in a stacked state. It is temporarily fixed by 65,66. The distal portion 22 further includes a gripping portion 63 that extends from the temporary fixing portion 65 located at the first bent portion 55 to the side seam 23 side. A latching area (fastening area) 68 formed of a hook element of a mechanical fastener or a pressure-sensitive adhesive is disposed on the inner surface of the second distal part 62 between the temporary fixing parts 65 and 66. In the present embodiment, a hook sheet having a plurality of hook elements is disposed.

  An auxiliary sheet piece 69 made of a sheet material separate from the base sheet 58 is laminated between the second bent portion 56 and the latching area 68 in the distal portion 22. In the region where the base sheet 58 and the auxiliary sheet piece 69 are laminated, a high-rigidity region 70 having higher rigidity than the proximal portion 21 and the first distal portion 61 is formed.

The base sheet 58 has a fiber nonwoven fabric, for example, a mass of about 20 to 100 g / m ² , preferably about 40 to 80 g / m ^2. A spunbond fiber nonwoven fabric of ˜60 g / m ² , preferably about 20 to 40 g / m ² can be suitably used. Although the base sheet 58 and the auxiliary sheet piece 69 may be formed from the same fiber nonwoven fabric, it is preferable that the mass of the base sheet 58 is larger than the mass of the auxiliary sheet and the rigidity is high. When the mass of the base sheet 58 is smaller than the mass of the auxiliary sheet piece 69, when the gripping portion 63 is pulled, the proximal portion 21 and the auxiliary sheet piece 69 are separated due to the difference in strength of the sheet. This is because the base sheet 58 may be broken. Moreover, by making the rigidity of the auxiliary sheet piece 69 lower than that of the base sheet 58, the outer surface of the laminated area of the auxiliary sheet piece 69 becomes relatively flexible in the laminated state of the tape fastener 20, and the touch becomes good.

<Bending stiffness value>
As described above, since the tape fastener 20 is formed from a fiber nonwoven fabric, the tape fastener 20 is excellent in flexibility as compared with the case where the tape fastener 20 is formed from a plastic film. Is a portion (high rigidity portion) where the hook sheet of the latching area 68 is located. By using a relatively flexible material as the hook sheet, the flexibility in the width direction of the tape fastener 20 is further improved. Can do.

Specifically, in the folded state of the tape fastener 20, the longitudinal direction Y (the width direction of the tape fastener 20) of the portion excluding the high-rigidity portion (excluding the high-rigidity region 70), and both side edges are mutually connected. The KES bending rigidity value in the direction of approaching is 0.04 to 0.44 gf · cm ² / cm, and the longitudinal direction Y of the highly rigid part (the width direction of the tape fastener 20, the direction in which the side edges 70 approach each other) The KES flexural rigidity value is about 0.56 to 1.8 gf · cm ² / cm. Since the conventional KES bending rigidity value of the tape fastener formed from a plastic film used for disposal or size adjustment is about 2.0 gf · cm ² / cm. The tape fastener of the form has a lower bending rigidity value in the width direction than the conventional tape fastener, and is excellent in flexibility. In order to obtain such a bending rigidity value, it is preferable to use a spunbond nonwoven fabric having a mass of about 30 to 100 g / m ² for the base sheet 58 and the auxiliary sheet piece 69, and at least both side edges of the tape fastener 20 in a folded state. It is preferable that the temporary fixing portions 65 and 66 are located apart from each other by a given dimension, and the entire facing surfaces of the stacked portions are not temporarily fixed. Thus, since the bending rigidity value in the width direction (the longitudinal direction Y of the diaper 10) of the tape fastener 20 is relatively low, the body of the wearer of the tape fastener 20 is indirectly caused by warping or bending forward. Even if it touches the skin, there is no risk of it biting into the skin and leaving marks or pain.

For example, a hydrophobic hot melt adhesive having a mass of about 5 to 20 g / m ² can be used for the bonding area 60. The 1st and 2nd temporary fix | stop parts 65 and 66 can be provided by performing a well-known pressurization process or a pressurization heating process, for example, can be provided by an embossing / debossing process or a sonic process. In the case where the tape fastener 20 itself has thermoplastic synthetic fibers, it can be temporarily fixed more stably by applying pressure and heat treatment and thermally fusing the fibers together.

  The rear waist region 14 is contracted in the lateral direction X by the contracting action of the rear waist elastic body 35, and a plurality of ridges 71 continuous in the lateral direction X are formed. In addition, at least one rear waist elastic body 35 is positioned in a region where the proximal portion 21 of the tape fastener 20 is positioned in the rear waist region 14, and the tape fastener 20 is moved to the rear side by contraction of the elastic body 35. The undulation which continues to a waist periphery direction with the waist area 14 arises. The first and second distal portions 61 and 62 stacked on the proximal portion 21 between the first temporary fixing portion 65 and the second temporary fixing portion 66 are deformed by the proximal portion 21 and have a length dimension thereof. Is affected by the decrease in the size of the rear waist region 14, and the gripping portion 63 is also separated from the outer surface, so that the wearer or the wear assist when operating the tape fastener 20. A person can easily grasp the gripping portion 63. Further, since the distal portion 22 is separated from the outer surface of the rear waist region 14 in this manner, even if the tape fastener 20 is laminated, the arrangement region has high rigidity to the extent that the wearer feels uncomfortable. There is nothing. In the tape fastener 20 having such a configuration, as indicated by an imaginary line, the wearer or wear assistant of the diaper 10 picks the gripping portion 63 and pulls it up in the direction of the arrow F, thereby temporarily mounting the temporary fastening portions 65 and 66. The stop is released and the tape fastener 20 is deployed.

  Referring to FIGS. 6 and 7, the deployed tape fastener 20 is latched to the outer surface of the front waist region 13 via the latching region 68 of the second distal portion 62. Since the base sheet 58 of the tape fastener 20 is made of a fiber non-woven fabric, it is more flexible than when it is formed from a relatively rigid plastic sheet, and along the outer surface of the curved front waist region 13. Extend. Further, as described above, the proximal portion 21 is easily deformed in accordance with the contraction of the rear waist region 14, and a force for pulling it toward the rear waist region 14 acts on the entire distal portion 22. Accordingly, the distal portion 22 hooked on the outer surface of the front waist region 13 is pulled rearward, and the both side edges of the diaper 10 are drawn between the proximal portion 21 and the distal portion 22. The areas 13 and 14 can be fitted to the wearer's body, and the size adjustment is easy. In addition, you may provide the latching area 68 by apply | coating an adhesive other than a hook element. When the hooking area 68 is formed from a hook element of a mechanical fastener, it has a loop element on the outer surface of the front waist area 13 in addition to being hooked directly to the front waistsheet 25 formed from a fiber nonwoven fabric. A landing or target sheet may be attached and hung on the sheet.

  In this state, when the base sheet 58 is formed of a fiber nonwoven fabric as in the present embodiment, the second distal portion 62 warps due to the force of pulling the distal portion 22 backward by the proximal portion 21, There is a possibility that the latching area 68 may be peeled off from the outer surface of the front waist area 13. On the other hand, if the rigidity of the entire base sheet 58 is made relatively high in order to prevent such disadvantages, the proximal portion 21 cannot be deformed along the undulations of the rear waist region 14, so There is a possibility that a part of the positioning part 21 is peeled off. Also, when the rigidity of the entire base sheet 58 is made relatively low and the mass of the hot melt adhesive forming the bonding area 60 is increased to further increase the bonding strength, the rear waist area 14 near the proximal portion 21 is increased. The both side portions 18 have higher rigidity than other regions, and may be stiff and uncomfortable on the skin.

  In the tape fastener 20 according to this embodiment, even if the whole is pulled rearward due to the contraction of the rear waist region 14 in the hooked state, a high rigidity region is provided between the proximal portion 21 and the hooking region 68. By forming 70, the latching area 68 is stably latched on the outer surface of the front waist area 13, and there is no possibility that it will be released. That is, when the front and rear waist regions 13 and 14 expand and contract in the direction around the waist, the tape fastener 20 is pulled in the direction around the waist, the tape fastener 20 is deformed, and both side edges 20c and 20d are warped. Become. In this way, when the side edges 20c and 20d are warped, a peeling force acts on the latching area 68 to facilitate the peeling, and the high-rigidity area 70 is disposed between the proximal portion 21 and the latching area 68. By doing so, the force to deform the tape fastener 20 can be dispersed and the deformation can be suppressed. Moreover, the side edge part of the diaper 10 in which the side seam 23 is located is laid down to the front waist area 13 side by hooking the tape fastener 20 on the front waist area 13. The fallen side edge applies an outward force to the first distal portion 61 that contacts and faces the first distal portion 61 so as to return to the original state and tries to deform the distal portion 22 into a convex shape. When the distal portion 22 in the vicinity of the side edge is deformed in this way, a peeling force acts on the latching area 68, but the high-rigidity area 70 is located between the side edge of the diaper 10 and the latching area 68. It is possible to suppress the deformation of the distal portion 22 by being located at the position, and to prevent the peeling force from acting on the latching area 68.

  In order to achieve such an effect, a portion of the distal portion 22 located between the proximal portion 21 and the latching area 68, that is, the entire first distal portion 61 and a part of the second distal portion 62. Further, the auxiliary sheet piece 69 may be continuously arranged, and the high rigidity region 70 may be formed. This is because, in the case of such an aspect, warping and deformation of the tape fastener 20 from the proximal portion 21 to the latching area 68 can be suppressed. The high-rigidity region 70 may be positioned between the proximal portion 21 and the temporary fixing portion 66, or may be positioned so that a part thereof overlaps with the latching region 68.

  Referring to FIG. 8, an example of an aspect of discarding the diaper 10 is shown. First, after the diaper 10 is used, the side seam 23 is peeled to separate the both side edges of the front and rear waist regions 13 and 14, The part is bent inward, and the crotch region 15 is bent so as to be rounded toward the front and rear waist regions 13 and 14. Next, the distal portion 22 of the tape fastener 20 is latched to the outer surface of the crotch region 15 via the latching region 68. Thereby, the state which rolled the diaper 10 can be hold | maintained, and it can dispose hygienically without leaking excrement outside. In particular, in an open type diaper having a normal tape fastener, the rolled state of the diaper cannot be maintained for a relatively long time, and the tape fastener is temporarily stored in a disposal container. However, according to the diaper 10 in the present embodiment, there is no possibility of causing such a disadvantage. Further, as described above, the latching area 68 can be formed by a hook element or a pressure sensitive adhesive of a mechanical fastener, but when it is formed by a hook element, it is formed by a pressure sensitive adhesive. Compared to the above, the latched state can be maintained for a relatively long time. Further, when the hooking area 68 is formed of a hook element, the hooking strength does not decrease even when wetted with body fluid, and the hooking is released when the diaper 10 is rolled up and discarded. In such a case, the latching operation can be repeatedly performed when the diaper 10 is tightened more strongly in order to maintain the rolled state.

9 and 10, there is shown a modification of the tape fasteners 20, in this modification, the tape fasteners 20 are arranged one at the central portion in the transverse direction X of the rear waist region 14. Thus, even when a single tape fastener 20 instead of a plurality of tape fasteners 20 is disposed in the rear waist region 14, when the diaper 10 is discarded, the gripper 63 of the tape fastener 20 is rolled in a state in which the diaper 10 is rolled up. By pulling and pulling to the waist opening side while being picked and hung on the front waist region 13, it is possible to maintain a rounded state and to prevent excrement from leaking.

Second Embodiment
Referring to FIG. 11, in the present embodiment, the auxiliary sheet piece 69 is disposed over the entire area of the second distal portion 62. In such an aspect, it is possible to more effectively prevent the distal portion 22 from warping, and the entire outer surface of the tape fastener 20 has flexibility, so that the skin contact with the wearer's body is good.

<Third Embodiment>
Referring to FIG. 12, in the present embodiment, the base sheet 58 includes a first tape 81 that forms the proximal portion 21 and a second tape 82 that forms the distal portion 22. The first tape 81 and the second tape 82 are joined to each other at the joint portion 84. The temporary fixing portions 65 and 66 are located at the joint portion 84 and the bent portion of the second tape 82, and the stacked state of these tapes is maintained. In the present embodiment, in order to achieve the effect of the present invention, it is preferable that at least the rigidity of the distal portion 22 is higher than the rigidity of the proximal portion 21, in other words, the rigidity of the second tape 82. Is preferably higher than that of the first tape 81. This is because even in such a correlation of rigidity, a high rigidity region 70 having higher rigidity than the proximal portion 21 is formed between the proximal portion 21 and the latching region 68 of the distal portion 22.

<Fourth embodiment>
Referring to FIG. 13, in the tape fastener 20 according to the present embodiment, the base sheet 58 is bent in two, and the second end 20 b is located outside the outer end of the joining region 60 in the lateral direction X. Yes. As in the present embodiment, the base sheet 58 may not be bent multiple times .

<Fifth Embodiment>
Referring to FIG. 14, the tape fastener 20 according to the present embodiment extends in the lateral direction X without the base sheet 58 being bent, and is located outward from the joining region 60 in the lateral direction X in a state before use. A latching area 68 is positioned at a predetermined distance, and the distal portion 22 is latched to the side of the rear waist area 14 via the latching area 68. The auxiliary sheet piece 69 is positioned so as to overlap with at least a part of the latching area 68 of the distal portion 22 of the base sheet 58 in a plan view, and a high-rigidity area 70 is formed in the laminated part. The

<Sixth Embodiment>
Referring to FIG. 15, in the tape fastener according to the present embodiment, the tape fastener 20 extends straight in the lateral direction X in a state where the base sheet 58 is not bent, as in the fifth embodiment. The base sheet 58 has an elastic portion 90 between the joining area 60 and the high rigidity area 70. Since the base sheet 58 has the elastic portion 90, the proximal portion 21 and the portion of the distal portion 22 excluding the elastic portion 90 are formed of an inelastic sheet, and the elastic portion 90 is formed of an elastic sheet joined thereto. Alternatively, the entire base sheet 58 may be formed of an elastic sheet. In the latter case, the proximal portion 21 is made inelastic because it is fixed to the rear waist region 14 via the joining region 60, and the auxiliary sheet pieces 69 are laminated in the high-rigidity region 70 to form a base. The elasticity of the sheet 58 is reduced and suppressed, and becomes a low elastic region or an inelastic region. In any of these cases, the fastening portion of the tape fastener 20 is improved by providing the elastic portion 90 on the base sheet 58, and the force to try to peel it off from the latching region 68 by the high-rigidity region 70. Is suppressed, and can be stably latched.

<Seventh embodiment>
Referring to FIG. 16, in the diaper 10 according to the present embodiment, the outer surface of the elastic waist panel 11 is formed from a fiber nonwoven fabric having a quilt pattern 91. On the outer surface of the tape fastener 20, that is, the outer surface of the distal portion 22, an auxiliary sheet piece 69 formed of a fiber nonwoven fabric having a quilt pattern 91 is disposed in the same manner as the outer surface of the elastic waist panel 11. Thus, as the fiber nonwoven fabric on the outer surface of the tape fastener 20 in the undeployed state, the same nonwoven fabric as that used on the outer surface of the diaper 10 main body is used, or a nonwoven fabric with the same or similar emboss pattern is used, or The tape fastener 20 attached to the outer surface of the diaper 10 can be visually integrated with the diaper main body by using the same color, the same or similar patterns and patterns, and separate from the diaper main body. The foreign object feeling by attaching the tape fastener 20 of this can be reduced.

  Each constituent material constituting the diaper 10 is limited to various known materials that are normally used in this kind of field in addition to the materials described in the present specification, unless otherwise specified. It can be used without. Moreover, the aspect in which the front waist region 13, the back waist region 14, and the crotch region 15 were formed in series may be sufficient as the diaper 10. FIG. In the present specification and claims, the terms “first”, “second” and “third” are used merely to distinguish like elements, positions and the like.

The disclosure relating to the present invention described above can be organized into at least the following matters.
At least the first waist region of the first and second waist regions has elasticity in the lateral direction, and the tape fastener is formed of a fiber nonwoven fabric sheet, and a length direction in a non-deployed state and the tape fastener The tape fasteners in the unfolded state of the non-skin of the second waist region, and both side edges facing each other in the width direction, the proximal portion fixed to the first waist region, and the unfolded state. A distal portion having a latching area for releasably latching on the opposing surface , and a rigidity in a direction in which both side edges of the tape fastener approach each other between the proximal portion and the latching area There wherein is formed the high rigidity region is higher than the proximal portion, said tape fastener has a base sheet defining said proximal portion and said distal portion, the high-rigidity region is the Besushi It is formed by laminating the auxiliary sheet pieces and.

The present invention disclosed in the above paragraph 0046 can include at least the following embodiments. The embodiments can be adopted separately or in combination with each other.
( 1 ) The said base sheet is formed from the sheet | seat member continuous in the length direction.
( 2 ) The rigidity of the auxiliary sheet piece is lower than the rigidity of the base sheet.
(3) pre-Symbol basesheet, wherein a first tape forming the proximal portion, which is composed of a second tape forming said distal portion, the rigidity of the second tape of the first tape It is higher than the rigidity.
( 4 ) In the folded state of the tape fastener, the KES bending rigidity value in the direction in which both side edges of the tape fastener approach each other except the region where the hooking area exists is 0.04 to 0.44 gf · cm. ² / cm.
( 5 ) The hooking area is formed from a hook sheet having a hook element of a mechanical fastener, and both side edge portions of the tape fastener in the area where the hooking area exists in the folded state of the tape fastener. The KES bending rigidity value in the approaching direction is 0.56 to 1.8 gf · cm ² / cm.
( 6 ) The tape fastener is temporarily fixed to the proximal portion via a temporary fixing portion in a state where the distal portion is bent, and the temporary fixing portion is spaced apart in the lateral direction. It has a 2nd temporary fix | stop part, and the said latching area is located in the inner surface of the said distal part between the said 1st and 2nd temporary fix | stop parts.
( 7 ) The hooking area is a hook element of a mechanical fastener.
( 8 ) The tape fastener further includes an elastic portion positioned between the distal portion and the high-rigidity region.

10 Disposable pants-type wearing articles (disposable diapers)
13 Front waist area 14 Rear waist area 15 Crotch area 20 Tape fastener 21 Proximal part 22 Distal part 58 Base sheet 60 Joining area 65 First temporary fastening part 66 Second temporary fastening part 68 Hatching area 69 Auxiliary sheet piece 70 High Rigid region 81 First tape 82 Second tape 90 Elastic portion X Horizontal direction Y Vertical direction

Claims (9)

It has a longitudinal direction and a transverse direction perpendicular thereto, and has a skin facing surface and a non-skin facing surface on the opposite side thereof, a first waist region that is one of the front and rear waist regions, and a second waist that is the other of the front and rear waist regions And a crotch region located between the first and second waist regions, and side edges extending in the longitudinal direction in the first and second waist regions are overlapped and joined to each other, and the first waist region In a disposable pants-type wearing article with a tape fastener attached to
At least the first waist region of the first and second waist regions has elasticity in the lateral direction,
The tape fastener is formed from a fiber non-woven sheet, has a length direction in a non-deployed state and a width direction orthogonal thereto, and both side edges facing each other in the width direction, and a near fixed to the first waist region. A distal portion having a latching area for releasably latching the tape fastener to the non-skin-facing surface of the second waist region in a deployed state, and the proximal portion and the Between the hooking area, a high rigidity region is formed in which the rigidity in the direction in which both side edges of the tape fastener approach each other is higher than that of the proximal portion ,
The wearing article , wherein the tape fastener includes a base sheet that defines the proximal portion and the distal portion, and the high-rigidity region is formed by laminating an auxiliary sheet piece on the base sheet . The wearing article according to claim 1 , wherein the base sheet is formed from a sheet member continuous in a length direction thereof. The wearing article according to claim 1 or 2 whose rigidity of said auxiliary sheet piece is lower than rigidity of said base sheet. Before SL basesheet, wherein a first tape forming the proximal portion, the is composed of a second tape to form a distal portion, than the rigidity of said second tape rigidity said first tape The wearing article according to claim 1, which is high . In the folded state of the tape fastener, the KES bending rigidity value in the direction in which both side edges of the tape fastener approach each other except the region where the hooking area exists is 0.04 to 0.44 gf · cm ² / cm. the wearing article according to claims 1 to 4 is. The hooking area is formed from a hook sheet having a hook element of a mechanical fastener, and in the folded state of the tape fastener, the both sides of the tape fastener in the direction in which the hooking area exists are close to each other. The wearing article according to any one of claims 1 to 5 , wherein the KES bending rigidity value is 0.56 to 1.8 gf · cm ² / cm. The tape fastener is temporarily fixed to the proximal portion via a temporary fixing portion in a state where the distal portion is bent, and the temporary fixing portion is first and second temporary spaced apart in the lateral direction. The wearing article according to any one of claims 1 to 6 , further comprising a stop portion, wherein the hooking area is located on an inner surface of the distal portion between the first and second temporary fixing portions. The wearing article according to any one of claims 1 to 7 , wherein the hooking area is a hook element of a mechanical fastener. The said tape fastener is a wearing article in any one of Claims 1-8 which further has an elastic part located between the said distal part and the said highly rigid area | region.