JP2018166699A - Tape type disposable diaper - Google Patents

Abstract

To easily expand a side panel diagonally downward and in a girth direction.SOLUTION: A tape type disposable diaper has: a first part 81 positioned on the rear side of a side panel 13 and extends from a side edge on the back side part to a central side in a width direction; and a second part 82 which is positioned on the surface side of the side panel 13 and extends to the central side in the width direction by way of a lower side of the side panel from the side edge of the back side part. The first part 81 and the second part 82 are arranged with respect to the side panel 13 so that a lower edge 13u of a side stretchable area 13E in the side panel 13 is pressed against an upper edge 82t of a surface side free end 82f in the second part 82 in the state that the side panel 13 is opened sideways.SELECTED DRAWING: Figure 12

Description

  The present invention relates to a so-called tape-type disposable diaper.

  There are mainly three types of disposable diapers: tape type, pants type, and pad type. Among these, the tape-type disposable diaper is worn by connecting the connecting portions provided on the left and right sides of the back portion to the outer surface of the abdominal portion after being applied to the body in the unfolded state.

  A general tape-type disposable diaper has a ventral part extending forward from the center in the front-rear direction, and a back part extending rearward from the center in the front-rear direction. A wing part extending on both sides, an abdomen part and a dorsal part have an intermediate part located between the left and right wing parts, and the wing part is detachably connected to the outer surface of the abdomen part Has a part. In use, the wing portion is turned from both sides of the waist to the outer surface of the abdominal portion, and the connecting portion of the wing portion is connected to the outer surface of the abdominal portion. Such a tape-type disposable diaper is used not only for infants but also widely used for nursing care (adult use).

  The tape-type disposable diaper is inferior in the fit in the trunk direction as compared with the pants-type disposable diaper. For this reason, it has been proposed to improve the fit around the trunk by providing a stretchable region (side stretchable region) in the width direction in the wing portion (see, for example, Patent Document 1).

  For example, the device described in Patent Document 1 has a main body that forms an intermediate portion and a side panel that protrudes from a side edge of the main body, and a connecting portion is provided at the tip of the side panel. . In the device described in Patent Document 1, the side panel expands and contracts in the width direction, and the stretchability of the wing portion and by extension, the waist portion is added by this side panel.

  However, while the conventional general side panel can be easily installed by extending straight along the torso direction, it is obliquely downward (that is, viewed from the front) along the lower side of the bulge of the wearer's abdomen. The direction in which the left and right side panels are substantially V-shaped (hereinafter simply referred to as diagonally downward) is difficult to mount.

JP 2010-22550 A

  Then, the main subject of this invention is providing the tape-type disposable diaper which can extend a side panel also diagonally downward and the trunk periphery direction.

Typical aspects of the invention for solving the above problems are as follows.
<First aspect>
While having a ventral part extending to the front side from the front-rear direction center, and a dorsal part extending to the rear side from the front-rear direction center,
Having side panels attached to both sides of the dorsal part,
The side panel includes a base end portion attached to the back side portion, a connecting portion detachably connected to an outer surface of the ventral side portion, and at least a portion between the base end portion and the connecting portion. A side stretchable region extending and contracting in the width direction provided in the
In tape-type disposable diapers,
A first portion located on the back side of the side panel and extending from the side edge of the back side portion toward the center in the width direction, and located on the front side of the side panel, from the side edge of the back side portion to the side panel A second portion extending to the center in the width direction through the lower side,
The first portion has a back side fixing portion fixed to a surface adjacent to the front side,
The second portion extends from the side edge of the dorsal portion to the center in the width direction, the front free portion not fixed to the surface adjacent to the back side, and the back side adjacent to the center in the width direction of the front side free portion A front side fixing portion fixed to a surface adjacent to
In a state where the side panel is opened to the side, the lower edge of the side stretchable region in the side panel is pressed against the upper edge of the front-side free part in the second portion. 1 part and 2nd part are arranged,
A tape-type disposable diaper characterized by that.

(Function and effect)
In this aspect, when the side panel is extended in the circumferential direction for mounting, since the extension in the width direction center side is suppressed from the pressing part of the second part in the side stretchable region, the lower edge side in the side stretchable region The expandable amount is shorter than the upper edge side. As a result, when the side panel is extended in the direction around the trunk when attached, the direction of the side panel is naturally inclined downward. In addition, by operating the side panel to extend obliquely upward and then returning it to the waistline direction, or by forcibly stretching the side panel in the waistline direction, the effect of suppressing extension by pressing the second part can be eliminated. It is also possible to extend straight in the direction. As described above, according to this aspect, the side panel can be easily extended obliquely downward and around the trunk.

<Second aspect>
The upper edge of the front free part in the second part extends obliquely upward toward the side,
The tape type disposable diaper of a 1st aspect.

(Function and effect)
If it is formed like this aspect, the lower the edge of the side stretchable region is pressed against the upper edge of the front free part in the second portion, the more the side panel is extended in the direction of the trunk for mounting. The suppression effect by the second portion is high.

<Third Aspect>
A body having an absorbent body and extending in the front-rear direction over the ventral portion and the dorsal portion;
The main body has a side flap portion extending to the side than the side edge of the absorber,
The side panel is attached to the side flap part,
As a sheet constituting the side flap portion, a sheet having the first part and the second part is provided.
The tape type disposable diaper of the 1st or 2nd aspect.

(Function and effect)
The second portion is preferably formed by folding back the sheet constituting the side flap portion because there is no need to separately attach a dedicated member.

<Fourth aspect>
The body is
A liquid-impermeable sheet covering the back side of the absorber;
An exterior sheet covering the back side of the liquid-impermeable sheet;
A root portion fixed to a region including the side flap portion, a protruding portion extending from the root portion, a lying portion in which both front and rear direction ends of the protruding portion are fixed in a lying state, and the front and rear of the protruding portions A gathering sheet having a non-fixed rising part located between the lying parts, and a gathering elastic member fixed in a stretched state in the front-rear direction at least at the tip of the rising part,
With
In the side flap portion, the gather sheet, the liquid-impermeable sheet, and the exterior sheet are laminated,
Only the exterior sheet has a first part located on the back side of the side panel, and a second part located on the front side of the side panel and folded back on the side edge of the back side part. And
Of the first part formed by the exterior sheet, the part overlapping the back side of the side panel is not joined to the side panel,
The second part formed by the exterior sheet does not have the front side fixing part on the rear side of the lower edge of the side panel, and the front side fixing part is the same as or lower than the lower edge of the side panel. Have
The tape type disposable diaper of a 3rd aspect.

(Function and effect)
When the main body of the tape-type disposable diaper has such a structure, if the second part is formed only by the exterior sheet, the increase in the number of laminated sheets in the side flap part can be minimized, and the air permeability and flexibility Deterioration can be suppressed.

<Fifth aspect>
The gather sheet is located on the center side in the width direction from the base end of the side panel,
A waist stretchable sheet that stretches in the width direction is provided over a portion that overlaps the base end of both side panels in the back side portion,
The tape type disposable diaper of a 4th aspect.

(Function and effect)
As described above, of the first part formed by the exterior sheet, the part overlapping the back side of the side panel is not joined to the side panel, and the second part formed by the exterior sheet is the side panel. In the form in which the front side fixing portion is not provided behind the lower edge, the strength of the side flap portion to which the side panel is attached is inevitably lowered. On the other hand, when the waist stretchable sheet is arranged so as to overlap the base end portion of the side panel as in this aspect, the strength of the portion to which the base end portion of the side panel is attached can be supplemented by the waist stretchable sheet. it can. Of course, in combination with the stretchability of the side panel, stretchability can be imparted over a wider range.

<Sixth aspect>
It has a target sheet to which the connecting part of the side panel is connected to the outer surface of the waist part of the ventral part,
At least the lower edge of the target sheet extends obliquely downward toward the center in the width direction,
The tape type disposable diaper of any one aspect of 1st-5th.

(Function and effect)
The tape-type disposable diaper generally includes a target sheet for connecting the connecting portions of the side panels, and the shape of the target sheet is generally a rectangle that is long in the width direction. The shape of the target sheet is not suitable for holding the side panel diagonally downward. Therefore, it is also desirable that the shape of the target sheet is formed as in this aspect.

<Seventh aspect>
An absorbent body, and a sheet covering the back side of the absorbent body, comprising a main body extending in the front-rear direction over the ventral part and the back part;
In the center in the width direction of the front edge of the absorber, it has a recess recessed in the rear side,
The tape type disposable diaper of any one aspect of the 1st-6th.

(Function and effect)
Since the tape-type disposable diaper has a high rigidity in the region having the absorbent body, when the side panel is connected obliquely downward along the lower side of the bulge of the wearer's abdomen, the absorbent body impairs fit. Therefore, by providing a recess in the center in the width direction of the front edge of the absorbent body as in this aspect, it is easy to deform the absorbent body and to reduce the inhibition of fit caused by the absorbent body in one preferred form. is there.

<Eighth aspect>
In the center in the width direction of the front edge of the ventral part, it has a recess recessed in the rear side,
The tape type disposable diaper of any one aspect of 1st-7th.

(Function and effect)
Since tape-type disposable diapers are formed with a flat sheet, the side panel will be wrinkled on the abdomen even if the side panel is connected diagonally downward along the lower side of the bulge of the wearer's abdomen. Is inevitable, and there is room for improving fit in this respect. Therefore, by providing a recess in the center in the width direction of the front edge of the abdominal part as in this aspect, the deformation of the abdominal part is facilitated, and a decrease in fit due to wrinkling on the abdominal part is prevented. Is also a preferred form.

  As described above, according to the present invention, there are advantages such as that the side panel can be easily extended obliquely downward and in the direction around the trunk.

It is a top view which shows the inner surface of the tape-type disposable diaper of a state which the main body is unfolded, one side panel is folded, and the other side panel is opened to the side. It is a top view which shows the outer surface of the tape-type disposable diaper of a state which the main body is unfolded, one side panel is folded, and the other side panel is opened to the side. FIG. 5 is a sectional view taken along line 5-5 of FIG. FIG. 6 is a sectional view taken along line 6-6 of FIG. (A) 7-7 sectional drawing of FIG. 1, (b) 8-8 sectional drawing of FIG. (A) The top view of a waist elastic sheet, (b) It is sectional drawing of a waist elastic sheet. (A) Plan view of side panel, (b) Cross section of side panel It is a principal part enlarged view of FIG. FIG. 9 is a sectional view taken along line 9-9 in FIG. 1. It is sectional drawing which shows the principal part of a state which opened the side panel. It is a perspective view which shows the principal part of the state which opened the side panel. It is a perspective view which shows the principal part of the state which opened the side panel and pulled the side panel a little. It is a front view which shows a mounting state. It is a perspective view which shows another form. It is sectional drawing in the 9-9 line | wire of FIG. 1 which shows another form. It is a top view which shows the change at the time of manufacture. It is a top view which shows the outer surface of the tape type disposable diaper of another form.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. In addition, although the dot pattern part in sectional drawing has shown the hot-melt-adhesive which joins each structural member, it replaces with a hot-melt adhesive, uses other adhesives, or welds, such as a heat seal and an ultrasonic seal. Needless to say, the bonding may be performed by using.

  1 to 10 show an example of a tape-type disposable diaper. This tape-type disposable diaper has a ventral side portion extending forward from the front-rear direction center C and a back side portion extending rearward from the front-rear direction center C. The side panel 13 which connects the abdominal part F and the back part B attached to the both sides of each is provided. In the illustrated example, the waist portion of the back portion B has a wing portion WP that extends to the left and right sides (located to the side of the side edge on the crotch side), and includes the ventral portion F and the back portion B. Has a middle part CP located between the left and right wing parts WP, but has a wing part WP on both the ventral part F and the dorsal part B (in other words, the side edge is around the leg). The middle of the front-rear direction LD is constricted so as to be along the shape.

(Main body / Wing part)
The intermediate portion CP is formed by the main body 10 having the absorber 56, the liquid-permeable top sheet 30 that covers the front side of the absorber 56, and the liquid-impermeable sheet 11 that covers the back side of the absorber 56. Yes. The main body 10 includes an end flap portion EF that does not have the absorber 56 and extends to the front side and the rear side from the absorber 56, and a side flap portion SF that does not have the absorber 56 and extends to the side. Have. On the other hand, the wing portion WP is formed only by the side panel 13. A part of the wing part WP excluding a part on the front end side may be formed on the side part of the main body, and a part on the front end side in the wing part WP may be formed by another member (for example, a side panel for the back side part). .

  More specifically, in the illustrated example, the entire outer surface of the main body 10 is formed by the exterior sheet 12, and the liquid-impermeable sheet 11 is fixed to the inner surface side by an adhesive such as a hot-melt adhesive, and this liquid The absorbent element 50 including the absorber 56, the intermediate sheet 40, and the top sheet 30 are laminated in this order on the inner surface side of the impermeable sheet 11. The top sheet 30 and the liquid-impermeable sheet 11 are rectangular in the illustrated example, have slightly larger dimensions in the front-rear direction LD and the width direction WD than the absorbent element 50, and the side edges of the absorbent element 50 in the top sheet 30. The peripheral edge that protrudes further and the peripheral edge that protrudes from the side edge of the absorbent element 50 in the liquid-impermeable sheet 11 are fixed by a hot melt adhesive or the like. This portion becomes a part of the end flap portion EF and the side flap portion SF.

  Furthermore, rising gathers 60 and 60 that rise on the skin side of the wearer are provided on both sides of the surface of the main body 10 in the width direction WD, and the gather sheets 62 and 62 that form the rising gathers 60 and 60 are the tops. The sheet 30 extends from both side portions to the side flap portions SF.

Hereinafter, the material and the characteristic part of each part are demonstrated in order.
(Exterior sheet)
The exterior sheet 12 is provided so that the back surface of the disposable diaper has a touch and appearance like cloth. The exterior sheet 12 is preferably a non-woven fabric, but is not limited thereto. The type of the nonwoven fabric is not particularly limited, and as the material fiber, for example, synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester or polyamide, recycled fibers such as rayon or cupra, and natural fibers such as cotton are used. As a processing method, a spunlace method, a spunbond method, a thermal bond method, an air-through method, a needle punch method, or the like can be used. However, a long-fiber nonwoven fabric such as a spunbond nonwoven fabric, an SMS nonwoven fabric, or an SMMS nonwoven fabric is preferable in that both the touch and strength can be achieved. In addition to using a single nonwoven fabric, a plurality of nonwoven fabrics can be used. In the latter case, the nonwoven fabrics 12 are preferably bonded to each other with a hot melt adhesive or the like. When using a nonwoven fabric, the fabric weight is preferably 10 to 50 g / m ² , particularly 13 to 30 g / m ² . The exterior sheet | seat 12 can also be abbreviate | omitted and it can be set as the form which the liquid-impermeable sheet | seat 11 exposes to the back surface of a disposable diaper.

(Liquid impervious sheet)
The material of the liquid-impermeable sheet 11 is not particularly limited. For example, the liquid-impermeable sheet 11 is substantially made of an olefin resin such as polyethylene or polypropylene, a laminated nonwoven fabric obtained by laminating a nonwoven fabric on a polyethylene sheet, or a waterproof film. Non-woven fabrics that ensure liquid impermeability (in this case, liquid impervious sheets are composed of waterproof films and non-woven fabrics). Of course, in addition to this, materials having liquid impermeability and moisture permeability which have been used and used in recent years from the viewpoint of preventing stuffiness can also be exemplified. As the sheet of the material having liquid impermeability and moisture permeability, for example, an inorganic filler is kneaded in an olefin resin such as polyethylene or polypropylene, and the sheet is formed, and then stretched in a uniaxial or biaxial direction. Examples of the microporous sheet obtained in this way can be given. In addition, non-woven fabric using micro-denier fiber, strengthening leakage resistance by reducing the voids of the fiber by applying heat or pressure, and applying water-repellent resin or hydrophobic resin or water repellent to waterproof A sheet that is liquid-impermeable without using a film can also be used as the liquid-impermeable sheet 11.

  The liquid-impermeable sheet 11 in the illustrated example is slightly wider than the top sheet 30 and narrower than the exterior sheet 12, but the liquid-impermeable sheet 11 is not limited to this. The width can be changed as appropriate, for example.

(Top sheet)
As the top sheet 30, a liquid permeable material such as a porous or non-porous nonwoven fabric or a porous plastic sheet can be used. The nonwoven fabric is not particularly limited as to what the raw fiber is. For example, synthetic fibers such as olefins such as polyethylene and polypropylene, polyesters and polyamides, recycled fibers such as rayon and cupra, natural fibers such as cotton, and mixed fibers and composite fibers using two or more of them. Etc. can be illustrated. Furthermore, the nonwoven fabric may be manufactured by any processing. Examples of the processing method include known methods such as a spunlace method, a spunbond method, a thermal bond method, a melt blown method, a needle punch method, an air through method, and a point bond method. For example, the spun lace method is a preferable processing method for obtaining flexibility and drapeability, and the thermal bond method is for obtaining bulkiness and softness.

  The top sheet 30 may be composed of one sheet or may be composed of a laminated sheet obtained by bonding two or more sheets. Similarly, the top sheet 30 may be composed of one sheet or two or more sheets in the planar direction.

  Although the top sheet 30 in the illustrated example extends to the side of the side edge of the absorbent body 56, the top sheet 30 is not limited to this, and may extend to the side edge of the exterior sheet 12, and in a form having a rising gather. As long as it extends to the root portion of the gathering up, it may be changed as appropriate, such as extending only to the inner side in the width direction from the side edge of the absorber.

(Intermediate sheet)
An intermediate sheet (also referred to as a second sheet) 40 can be provided between the top sheet 30 and the absorbent element 50 in order to move excrement that has passed through the top sheet 30 to the absorbent body and prevent reversal. This intermediate sheet 40 not only improves the absorption performance of the absorbent by quickly transferring the excrement to the absorber, but also prevents the excretion of the absorbed excrement from reversing from the absorber, and makes the surface of the top sheet 30 feel soft. It is what makes it better. The intermediate sheet 40 can be omitted.

  The material of the intermediate sheet 40 is not particularly limited, and for example, the same material as that of the top sheet 30 can be used. The intermediate sheet 40 is preferably bonded to the top sheet 30. When heat embossing or ultrasonic welding is used for the bonding, the material of the intermediate sheet 40 preferably has the same melting point as the top sheet 30. Further, considering the permeation of the solid content in the stool, the fineness of the fiber used for the intermediate sheet 40 is preferably 5.0 to 7.0 dtex, but the liquid residue in the top sheet 30 increases. On the other hand, when the fineness of the fiber used for the intermediate sheet 40 is 1.0 to 2.0 dtex, the liquid residue of the top sheet 30 hardly occurs, but the solid content of the stool is difficult to permeate. Therefore, it is preferable that the fiber of the nonwoven fabric used for the intermediate sheet 40 has a fineness of about 2.0 to 5.0 dtex. The intermediate sheet 40 may be a mesh film in which a large number of pores are provided in a film material such as polyethylene.

  The intermediate sheet 40 in the illustrated form is arranged in the center shorter than the width of the absorbent element 50, but may be provided over the entire width. The length in the longitudinal direction of the intermediate sheet 40 may be the same as the entire length of the diaper, may be the same as the length of the absorbent element 50, or may be within a short length range centered on the region that receives the liquid.

(Absorption element)
The absorption element 50 is a part that absorbs and holds liquid such as urine and loose stool. In the illustrated example, the absorption element 50 includes an absorbent body 56 and a packaging sheet 58 that wraps the entire absorbent body 56. The packaging sheet 58 can be omitted as necessary, for example, when the absorbent body 56 is excellent in shape maintenance, and in that case, the absorbent element 50 is composed of the absorbent body 56 alone. The absorbent element 50 can be adhered to the inner surface of the liquid-impermeable sheet 11 via an adhesive such as a hot melt adhesive on the back surface.

(Absorber)
The absorber 56 can be formed of an aggregate of fibers. As this fiber assembly, a filament assembly obtained by opening, as necessary, synthetic fiber tows (fiber bundles) such as cellulose acetate as well as short fibers such as cotton-like pulp and synthetic fibers Can also be used. The fiber basis weight can be set to, for example, about 100 to 300 g / m ² when cotton-like pulp or short fibers are stacked, and in the case of a filament aggregate, for example, about 30 to 120 g / m ^2. Can do. The fineness in the case of a synthetic fiber is 1-16 dtex, for example, Preferably it is 1-10 dtex, More preferably, it is 1-5 dtex. In the case of a filament aggregate, the filament may be a non-crimped fiber, but is preferably a crimped fiber. The crimped degree of the crimped fiber can be, for example, 5 to 75, preferably 10 to 50, and more preferably about 15 to 50 per inch. Further, a crimped fiber that is uniformly crimped is often used. It is preferable to disperse and hold superabsorbent polymer particles in the absorber 56.

  It is preferable that the absorbent body 56 has a rectangular shape as in the illustrated example, and an hourglass shape having a narrow portion narrower than both the front and rear sides in the middle in the front-rear direction, because the fit around the legs is improved.

  In addition, the size of the absorbent body 56 can be appropriately determined as long as it extends to the front, rear, left and right of the urination port position, but preferably extends to the vicinity of the periphery of the main body 10 in the front-rear direction LD and the width direction WD. In addition, the code | symbol 56X shows the full width of the absorber 56, the code | symbol 10X shows the full width of the main body 10, and the code | symbol 10L has shown the full length (it is equal to the full length of a diaper in the illustration form).

(Superabsorbent polymer particles)
The absorber 56 can contain superabsorbent polymer particles in a part or all thereof. Superabsorbent polymer particles include “powder” in addition to “particles”. As the superabsorbent polymer particles 54, those used in this type of absorbent article can be used as they are. The particle size of the superabsorbent polymer particles is not particularly limited, but for example, screening using a standard sieve (JIS Z8801-1: 2006) of 500 μm (shaking for 5 minutes), and particles falling under the screen by this screening When sieving (shaking for 5 minutes) using a 180 μm standard sieve (JIS Z8801-1: 2006), the proportion of particles remaining on the 500 μm standard sieve is 30% by weight or less, and the 180 μm standard sieve It is desirable that the proportion of particles remaining on the surface is 60% by weight or more.

  The material of the superabsorbent polymer particles can be used without any particular limitation, but those having a water absorption of 40 g / g or more are suitable. High-absorbent polymer particles include starch-based, cellulose-based, and synthetic polymer-based starch-acrylic acid (salt) graft copolymers, saponified starch-acrylonitrile copolymers, and sodium carboxymethylcellulose crosslinks. Or an acrylic acid (salt) polymer can be used. As the shape of the superabsorbent polymer particles, a commonly used granular material is suitable, but other shapes can also be used.

  As the superabsorbent polymer particles, those having a water absorption rate of 70 seconds or less, particularly 40 seconds or less are preferably used. If the water absorption rate is too slow, a phenomenon that the liquid supplied into the absorber 56 returns to the outside of the absorber 56 (so-called reverse return) is likely to occur.

  Further, as the superabsorbent polymer particles, those having a gel strength of 1000 Pa or more are preferably used. Thereby, even if it is a case where it is set as the bulky absorber 56, the sticky feeling after liquid absorption can be suppressed effectively.

The basis weight of the superabsorbent polymer particles can be appropriately determined according to the amount of absorption required for the use of the absorber 56. Therefore, although it cannot be said unconditionally, it can be 50 to 350 g / m ² . If the amount of polymer is less than 50 g / m ^2, it is difficult to secure the absorption amount. When it exceeds 350 g / m ² , the effect is saturated.

(Packaging sheet)
When the packaging sheet 58 is used, as the material, tissue paper, particularly crepe paper, non-woven fabric, polylaminated non-woven fabric, a sheet with small holes, or the like can be used. However, it is desirable that the superabsorbent polymer particles be a sheet that does not escape. When a nonwoven fabric is used in place of the crepe paper, a hydrophilic SMS nonwoven fabric (SMS, SSMMS, etc.) is particularly suitable, and the material can be polypropylene, polyethylene / polypropylene composite material, or the like. The basis weight is preferably 5 to 40 g / m ² , particularly 10 to 30 g / m ² .

  The packaging form of the packaging sheet 58 can be determined as appropriate, but from the viewpoint of ease of manufacture and prevention of leakage of the superabsorbent polymer particles from the front and rear end edges, the cylinder is formed so as to surround the front and back surfaces and both side surfaces of the absorbent body 56. It is preferable that the front and rear edge portions protrude from the front and rear of the absorbent body 56, and the overlapping portion and the overlapping portion of the front and rear protruding portions are joined by a joining means such as hot melt adhesive or material welding.

(Side gather)
As shown in FIGS. 1 to 3 and FIG. 10, in order to improve the fit of the leg periphery portion located in the middle of the side portion of the main body 10 in the front-rear direction LD, (In the illustrated example, a side elastic member 70 extending in the front-rear direction LD is provided between the gather sheet 62 and the liquid-impermeable sheet 11 or between the second portion 80 and the liquid-impermeable sheet 11 described later). The portion having the side elastic member 70 is expanded and contracted in the front-rear direction LD by the expansion and contraction of the side elastic member 70.

(Get up gather)
In order to prevent urine and soft stool moving laterally on the top sheet 30 and prevent side leakage, the disposable diaper surface rises from the side of the top sheet 30 to the skin side on both sides in the width direction WD (protrusion) The rising gather 60 is provided over the entire front-rear direction.

  The rising gather 60 in the illustrated example has a root portion 65 fixed to a region including the side flap portion SF, a protruding portion 66 extending from the root portion 65, and both ends in the front-rear direction of the protruding portion are fixed in a lying state. Gathered portion 67, unfixed rising portion 68 located between the front and rear lodging portions of the projecting portion 66, and gather elasticity elastically fixed to at least the tip portion of the rising portion 68 in the front-rear direction. Member 63. The rising gather 60 is formed by a gather sheet 62 folded at the tip, and the gather sheet 62 can be made of a water-repellent nonwoven fabric, and the gather elastic member 63 is made of an elongated elastic member such as thread rubber. be able to. As shown in FIG. 1 to FIG. 3 and FIG. 10, the gather elastic members 63 can be provided in plural numbers with a space therebetween, or one each. Although the elongation rate of the part which has the gather elastic member 63 is not specifically limited, 150-350% is preferable in normal cases, and 200-300% is more preferable.

  The root portion 65 of the rising gather 60 in the illustrated example is provided only in the side flap portion SF, and is joined to the side portion of the liquid-impermeable sheet 11 and the side portion of the exterior sheet 12, but the side flap portion SF. May extend to the side of the region overlapping the absorber 56.

  The projecting portion 66 of the rising gather 60 has a lying portion at both ends in the front-rear direction LD, but the portion between them is an unfixed rising portion 68, and this rising portion 68 contracts the gather elastic member 63. It comes to stand by force. When the diaper is mounted, the diaper is mounted on the body in the shape of a boat, and the contraction force of the gather elastic member 63 acts. . As a result, so-called side leakage from around the legs is prevented.

(Waist elastic sheet)
It is preferable that a belt-like waist stretchable sheet 90 is provided around the trunk portion of the main body 10 in the back side portion B, and the back side portion B is elastically stretched in the width direction WD. For example, as shown in FIG. 6, the waist stretchable sheet 90 has non-stretchable regions 96 at both ends in the width direction WD, and a portion between these non-stretchable regions 96 is an intermediate stretchable stretchable in the width direction WD. It may be the region 95. The waist stretchable sheet 90 may be located only in the end flap portion EF, but when the waist stretchable sheet 90 is disposed so as to extend from the end flap portion EF to the rear end portion of the absorber 56 as illustrated, the absorber 56. This is preferable because the rear end is firmly pressed against the body.

  The waist elastic sheet 90 may use a sheet-like elastic member such as a rubber sheet, but it is preferable to use a nonwoven fabric from the viewpoint of air permeability. In this case, a sheet-like elastic member having air permeability such as a stretchable nonwoven fabric can be used. However, as shown in FIG. 6, a sheet layer 91 such as two nonwoven fabrics is pasted with an adhesive such as a hot melt adhesive. In addition, a material in which an elastic member 92 such as a perforated sheet, net, or elongated (thread or string) is fixed between the sheet layers 91 in a state of extending along the width direction WD is preferably used. . In this case, as the material of the sheet layer 91, the same material as the exterior sheet 12 can be used. The elongation rate of the elastic member 92 is preferably about 150 to 250%. In addition, when an elongated member (thread-like or string-like) is used as the elastic member 92, it is preferable to provide about 5 to 15 pieces having a thickness of 420 to 1120 dtex with a spacing of 3 to 10 mm in the front-rear direction.

  Although the width of the waist elastic sheet 90 can be determined as appropriate, it is preferably a width extending between the left and right side flap portions SF as shown in the illustrated example, and particularly a width extending between the left and right wing portions WP. It is preferable. As specific dimensions, the width of the waist elastic sheet 90 is preferably about 40 to 95% of the total width 10X of the main body 10.

  Although the dimensions of the intermediate stretchable region 95 and the non-stretchable region 96 in the waist stretchable sheet 90 can be appropriately determined, the width of the intermediate stretchable region 95 is 30 to 100% of the width between the connecting portions 13A of the left and right side panels 13 described later. Preferably, the width of the non-stretchable region 96 is preferably about 5 to 20 mm in order to prevent shrinkage or turning-up when attached to the main body 10. The non-stretchable region 96 may be a region that does not have the elastic member 92. However, as described in Patent Document 3, the elastic member 92 is attached over the intermediate stretchable region 95 and the non-stretchable region 96, and in the non-stretchable region 96, the elastic member 92 is attached. The elastic member 92 may remain in the non-stretchable region 96, for example, or may be structured so as not to stretch or contract at all.

  Further, the elastic member 92 may be arranged so that a part of the elastic member 92 crosses the absorber 56. However, as shown in FIG. Therefore, if the structure is such that the elastic member 92 remains but hardly or does not expand or contract at all, the rear end portion of the absorbent body 56 does not contract in the width direction, so that the fit is further improved.

  The waist stretchable sheet 90 is disposed between the liquid-impermeable sheet 11 and the absorbent element 50 in the illustrated form, but is not particularly limited to this arrangement. For example, the waist stretchable sheet 90 may be disposed between the liquid-impermeable sheet 11 and the exterior sheet 12 or may be provided outside the exterior sheet 12. When the exterior sheet 12 is formed by stacking a plurality of sheet layers, the entire waist elastic sheet 90 may be provided between the sheet layers of the exterior sheet 12.

(Side panel)
The side panel 13 protrudes from both sides of the back portion B, and as shown in FIG. 7, the base end portion 13B attached to the main body 10 of the back portion B and the ventral portion F 13 A of connection parts connected with an outer surface so that attachment or detachment is possible, and the side expansion-contraction area | region 13E extended and contracted in the width direction WD provided in the part between the base end part 13B and the connection part 13A at least.

  As the connecting portion 13A of the side panel 13, a hook material (male material) of a mechanical fastener (surface fastener) may be provided, or an adhesive layer may be provided. The hook material has a large number of engaging protrusions on its connecting surface, and the engaging protrusions are (A) letter-shaped, (B) J-shaped, (C) mushroom-shaped, (D) There are T-shape, (E) double J-shape (shape in which J-shape is joined back to back), etc., but any shape may be used. When the diaper is worn, the wing portion WP is turned from both sides of the waist to the outer surface of the abdominal portion F, and the connecting portion 13A of the wing portion WP is connected to a proper position on the outer surface of the abdominal portion F.

  The side panel 13 is a side stretchable region 13E in which at least a portion between the base end portion 13B and the connecting portion 13A is stretched in the width direction WD. The elongation ratio of the side stretchable region 13E is not particularly limited, but is preferably about 150 to 250%. The structure of the side stretchable region 13E is not particularly limited. For example, at least the side stretchable region 13E of the side panel 13 may be formed using a sheet having elasticity by itself such as a rubber sheet or a stretchable nonwoven fabric. it can. Further, as illustrated in FIG. 7, two sheet layers 13S such as a nonwoven fabric are bonded together with an adhesive such as a hot melt adhesive, and a perforated sheet, net, elongated ( It is also preferable to form at least the side stretchable region 13E of the side panel 13 by using an elastic member 13G, such as a thread shape or a string shape, which is fixed in an extended state along the width direction WD. In this way, a plurality of elongated elastic members 13G attached to the sheet layer 13S with a space therebetween are widely used in the technical field of disposable diapers. There is also an advantage that the shrinkage characteristics of the side panel 13 can be easily adjusted by making the thickness, number, elongation rate, interval, and type of material different. In this case, as the material of the sheet layer 13S, the same material as the exterior sheet 12 can be used. Further, when an elongated member (thread-like or string-like) is used as the elastic member 13G, for example, about 5 to 15 members having a thickness of 420 to 1120 dtex can be provided at intervals of 3 to 10 mm in the front-rear direction.

  The side stretchable region 13E is provided over the entire width direction WD of the side panel 13 (that is, including the base end portion 13B and the connecting portion 13A) as long as it is provided at least in a portion between the base end portion 13B and the connecting portion 13A. However, if the base end portion 13B and the connecting portion 13A contract, the connection of the connecting portion 13A may be insufficient, and a joining failure of the base end portion 13B may occur. It is preferable that it is provided in the range of 50 to 80% of the width direction WD range between the connecting portion 13A and the connecting portion 13A. In this case, the base end portion 13B and the connecting portion 13A may be regions that do not have the elastic member 13G, but the elastic member 13G is attached over the entire width direction WD of the side panel 13, and the base end portion 13B and the connecting portion 13A are elastic. By cutting the member 13G or the like, a structure in which the elastic member 13G remains in the base end portion 13B and the connecting portion 13A, but hardly or not expands or contracts may be employed.

The connecting portion 13A can be provided on the sheet 13S constituting the side stretchable region 13E, but a support piece 13C protruding from the tip of the side stretchable region 13E is attached to the tip of the side panel 13 as shown in the example, and this support is provided. It is preferable to provide the connecting portion 13A on the piece 13C because manufacturing is easy. It is desirable that the support piece 13C has a connecting portion 13A in the middle of the width direction WD, and the tip portion is a knob that does not have the connecting portion 13A. The shape of the support piece 13C can be determined as appropriate, and in the illustrated example, the length in the front-rear direction LD becomes shorter toward the tip, and the connecting portion 13A is provided in the portion where the length in the front-rear direction LD is shortened. However, it may be rectangular. When the support piece 13C has a rectangular shape, the length in the front-rear direction LD is preferably shorter than the sheet 13S that forms the side stretchable region 13E. As a material of the support piece 13C, a known material such as a nonwoven fabric, a plastic film, a polylaminated nonwoven fabric, paper, or a composite material thereof can be used without particular limitation, but the fineness is 1.0 to 3.5 dtex, and the basis weight is 20 to 100 g / m. ^2. Spunbond nonwoven fabric, air-through nonwoven fabric, or spunlace nonwoven fabric having a thickness of 1 mm or less is preferred.

  The base end portion 13 </ b> B of the side panel 13 may be connected to a position overlapping the intermediate stretchable region 95 or may be disposed adjacent to the side edge of the intermediate stretchable region 95. The joining between the base end portion 13B of the side panel 13 and the main body 10 is preferably formed to be elongated along the front-rear direction LD as shown in the illustrated example, and is preferably strong, so that ultrasonic sealing or heat It is preferably made by welding such as a seal, but may be made by a hot melt adhesive. The width of the base end portion 13B (joint portion with respect to the main body 10) of the side panel 13 is preferably 40 to 80 mm or less.

  The shape of the side panel 13 can be determined as appropriate, and it is preferable that the side stretchable region 13E is rectangular as shown in the illustrated example because manufacturing is easy, but the length of the front-rear direction LD increases as the side stretchable region 13E moves toward the tip side. The trapezoid can be shortened. Although the dimension of the side panel 13 can be determined as appropriate, the length of the side stretchable region 13E in the front-rear direction LD is preferably about 70 to 100 mm, and the length of the side stretchable region 13E in the width direction WD is 30 to 70 mm. It is preferable that it is a grade.

(Target sheet)
It is preferable to provide a target sheet 20 having a target for facilitating the connection at the connection portion of the side panel 13 in the ventral portion F. When the connecting portion 13A is a hook material, the target sheet 20 can be one in which a large number of loop yarns are formed on the surface of a sheet base material made of a plastic film or a nonwoven fabric so that the engagement protrusions of the hook material are entangled. Moreover, in the case of an adhesive material layer, the surface of a sheet substrate made of a plastic film having a smooth surface that is rich in adhesiveness can be used. Moreover, when the connection location of the side panel 13 in the ventral portion F is made of a nonwoven fabric, for example, when the exterior sheet 12 of the illustrated form is made of a nonwoven fabric, and the connection portion 13A of the side panel 13 is a hook material, The target sheet 20 may be omitted, and the hook material may be entangled with the nonwoven fabric of the exterior sheet 12 and connected. In this case, the target sheet 20 may be provided between the exterior sheet 12 and the liquid-impermeable sheet 11.

(First part and second part)
Characteristically, as shown in FIGS. 1 and 8, the present tape-type disposable diaper is located on the back side of the side panel 13 and has a first portion 81 extending from the side edge of the back portion B toward the center in the width direction. The second portion 82 is located on the front side of the side panel 13 and extends from the side edge of the back portion B to the center in the width direction through the lower side of the side panel 13. The first portion 81 has a back side fixing portion 81b fixed to a surface adjacent to the front side, and the second portion 82 is adjacent to the back side extending from the side edge of the back side portion B to the center side in the width direction WD. The front side free part 82f which is not fixed to the surface, and the front side fixed part 82b which is adjacent to the surface adjacent to the back side adjacent to the center side in the width direction WD of the front side free part 82f are provided. The first portion 81 may or may not have the back side free portion 81f that extends from the side edge of the back side portion B to the center side in the width direction WD and is not fixed to the surface adjacent to the front side. Good. 10 and 11, when the side panel 13 is opened to the side, the lower edge 13u of the side stretchable region 13E of the side panel 13 is above the front free portion 82f of the second portion 82. The first portion 81 and the second portion 82 are arranged with respect to the side panel 13 so as to be pressed against the edge 82t. For this reason, with the side panel 13 opened to the side, the front-side fixing part 82b is positioned closer to the center in the width direction WD than the base end part 13B of the side panel 13.

  As a result, as shown in FIG. 12, when trying to extend the side panel 13 in the direction of the waist for mounting, the expansion in the center side in the width direction WD is suppressed from the pressing portion of the second portion 82 in the side stretchable region 13E. Therefore, the extendable amount on the lower edge 13u side in the side stretchable region 13E is shorter than the upper side. Therefore, if the side panel 13 is to be extended in the direction around the trunk when worn, the direction of the side panel 13 is naturally inclined downward, so that it easily follows the lower side of the bulge of the wearer's abdomen as shown in FIG. Can be installed diagonally downward. Further, by operating the side panel 13 so as to return to the waist direction after extending obliquely upward, or by forcibly extending the side panel 13 in the waist direction, it is possible to eliminate the effect of suppressing the extension by pressing the second portion 82, It is also possible to extend straight in the direction around the trunk. That is, the user can easily extend the side panel 13 obliquely downward and in the trunk periphery direction.

  The width of the front-side free part 82f can be determined as appropriate, but is preferably about 70 to 95% of the WD length in the width direction from the side edge of the main body 10 to the edge of the side stretchable region 13E. Although the width | variety of the front side fixing | fixed part 82b can be determined suitably, it is preferable to set it as about 3 to 5% of the product width full length among the width direction WD length of the main body 10. FIG. The length in the front-rear direction LD of the front side fixing portion 82b is preferably about 180 to 420 mm in consideration of both flexibility and strength. Moreover, it is preferable that the length of the front-back direction LD of the part (parts other than 82b) where the exterior sheet 12 is not fixed in the back part B is about 37 to 260 mm. Moreover, in a general manufacturing form, since it is manufactured in a state in which diapers are continuously connected in the front-rear direction LD at the time of manufacturing, the portion of the ventral portion F where the exterior sheet 12 is not fixed (portion other than 82b) The length of the front-rear direction LD is preferably about 0 to 52 mm from the viewpoint of controlling adhesion and welding with a processing machine. When providing the back side free part 81f, it is preferable that the width | variety of the back side free part 81f is below the width | variety of the front side free part 82f. The front side fixing part 82b and the back side fixing part 81b can be fixed by welding to a material such as an ultrasonic seal or a heat seal, in addition to being fixed by a hot melt adhesive.

  The positional relationship between the side panel 13 and the second portion 82 is such that the lower edge 13u of the side stretchable region 13E in the side panel 13 is above the front-side free portion 82f in the second portion 82 with the side panel 13 opened to the side. Although it can be determined as long as it is pressed against the edge 82t, the distance in the front-rear direction LD between the lower edge 13u of the side stretchable region 13E and the rear end of the front side fixing portion 82b is preferably about 0 to 15 mm. As shown in the example, when the upper edge 82t of the front side free portion 82f in the second portion 82 extends obliquely upward toward the side, as shown in FIG. 1 and FIG. Therefore, as the side panel 13 is extended in the circumferential direction, the lower edge 13u of the side stretchable region 13E is pressed against the upper edge 82t of the front free portion 82f in the second portion 82, so that the second portion 82 is restrained. The effect is high. The lower edge 13u of the side stretchable region 13E in the side panel 13 is preferably extended linearly along the width direction WD because it is easy to manufacture. However, the side panel 13 is open to the side with the side panel 13 open to the side. It is also preferable to extend obliquely upward.

  In the illustrated example, the pressing position of the second portion 82 in the front-rear direction LD is located on the rear side of the front-side fixing portion 82b, but may be the same as or on the front side of the front-side fixing portion 82b. In the illustrated example, the pressing position of the second portion 82 in the width direction WD is located in the middle of the width direction WD of the front side free portion 82f, but the first portion may be adjacent to the front side fixing portion 82b. It may be adjacent to the boundary (side edge) between 81 and the second portion 82.

  As shown in FIG. 14, the second portion 82 can also be formed by attaching a dedicated member only in the vicinity of the side panel 13. However, as in the example shown in FIG. 1 to FIG. 10, the first portion 81 and the second portion 82 extend sideways of the sheet constituting the side flap portion SF of the main body 10, and at the side edges of the main body 10. It is preferable to form it by folding it to the frontmost side because there is no need to attach a dedicated member separately. In the illustrated example, the first portion 81 and the second portion 82 are formed only by the exterior sheet 12, and the portion of the first portion 81 formed by the exterior sheet 12 that overlaps the back side of the side panel 13 is the side panel. The second portion 82 that is not joined to the outer sheet 13 and is formed by the exterior sheet 12 does not have the front-side fixing portion 82b on the rear side of the lower edge 13u of the side panel 13, and the lower portion 13u of the side panel 13 A front side fixing portion 82b is provided on the front side (or the same side). Thereby, the increase in the sheet | seat lamination | stacking number in side flap part SF can be suppressed to the minimum, and the fall of air permeability and a softness | flexibility can be suppressed. As shown in FIG. 15, the first portion 81 and the second portion 82 are folded back to the front side at the side edge of the main body 10 including not only the exterior sheet 12 but also the gather sheet 62 constituting the side flap portion SF. It can also be formed. However, in this case, it is necessary to attach the side panel 13 to the inside of the gather sheet 62, and in a state where the side panel 13 is opened to the side, the base end portion 13B of the side panel 13 is exposed to the inner surface, which deteriorates the touch. There is a fear. Therefore, as in the illustrated example, it is preferable that the gather sheet 62 is not folded but only the exterior sheet 12 is folded and the side panel 13 is attached between the sheets of the side flap portion SF.

  For example, when the exterior sheet 12 is folded to form the first part 81 and the second part 82 (the same applies to other sheets as long as the sheet constitutes the side flap portion SF), as shown in FIG. Before the folding of the outer sheet 12, the base end portion 13B of the side panel 13 is attached to the surface on the center side in the width direction WD from the folded position of the outer sheet 12, and then the outer sheet 12 is folded together with the side panel 13. The folded portion of the exterior sheet 12 is continuous (or intermittent) from near the lower edge 13u of the side panel 13 to the ventral portion F at a position spaced from the folded position (side edge of the back portion B) toward the center in the width direction WD. The front side fixing portion 82b is formed by being joined to the opposing surface. The front side fixing part 82b may not be provided up to the front end part of the ventral part F, and may be provided symmetrically in the front-rear direction. Except for the front side fixing portion 82b, the folded portion of the exterior sheet 12 is not joined to the opposing surface, and particularly, the front side free portion 82f is formed by not joining the opposing surface between the front side fixing portion 82b and the folding position. . In addition, in the form in which the side panel 13 includes the support piece 13C prior to the folding of the exterior sheet 12, it is preferable that the distal end side of the support piece 13C is folded back at a position closer to the base end side than the connecting portion 13A. In the product thus manufactured, when the side panel 13 is opened to the side in use, the force acts so that the force also opens to the side of the folded portion of the exterior sheet 12 that overlaps the outside of the side panel 13. The folded portion of the exterior sheet 12 is fixed so as not to be opened by the front side fixing portion 82b from the vicinity of the lower edge 13u of the side panel 13 to the front side. As a result, as shown in FIGS. 1, 11, and 12, the folded portion of the exterior sheet 12 has an end on the center side in the width direction WD on the rear side of the front side fixing portion 82 b, and the side stretchable region of the side panel 13. It is pushed down by the lower edge 13u of 13E, and is opened so as to be inclined upward from the rear end of the front side fixing portion 82b to the side. That is, a portion of the folded portion of the exterior sheet 12 that is pushed down by the lower edge 13u of the side stretchable region 13E of the side panel 13 becomes the upper edge 82t of the front side free portion 82f. Of the folded portion of the exterior sheet 12, the portion 12R that overlaps the outside of the side panel 13 with the side panel 13 open to the side is left as it is a cover portion that covers the side panel 13 in the illustrated example. This part may be excised at the time of manufacture.

  As described above, of the first portion 81 formed by the exterior sheet 12, the portion overlapping the back side of the side panel 13 is not joined to the side panel 13 and is the second portion formed by the exterior sheet 12. In the configuration in which the front side fixing portion 82b is not provided on the rear side of the lower edge 13u of the side panel 13, the strength of the side flap portion SF to which the side panel 13 is attached has to be reduced. However, when a waist elastic sheet 90 that expands and contracts in the width direction WD is provided over a portion overlapping the base end portions 13B of both side panels 13 in the back portion B as shown in the illustrated example, the base of the side panel 13 is provided. The strength of the portion to which the end portion 13B is attached can be supplemented by the waist elastic sheet 90. Of course, the stretchability of the waist stretchable sheet 90 and the stretchability of the side panel 13 can be combined to provide stretchability in a wider range.

  On the other hand, the shape of the target sheet 20 of the tape-type disposable diaper is generally a rectangle that is long in the width direction WD. Such a shape of the target sheet 20 is used to stop the side panel 13 with the side panel 13 facing downward. Is not suitable. Therefore, as shown in FIG. 17, it is preferable that at least the lower edge 20u of the target sheet 20 extends obliquely downward linearly or curvedly toward the center in the width direction WD. In the illustrated example, the upper edge 20t of the target sheet 20 also extends obliquely downward toward the center in the width direction WD linearly or curvedly, but only the lower edge 20u of the target sheet 20 linearly or curvedly in the width direction WD. It can also be set as the form extended diagonally downward toward the center of.

  Further, since the tape-type disposable diaper has a high rigidity in the region having the absorbent body 56, the absorbent body 56 is fit when the side panel 13 is connected obliquely downward along the lower side of the bulge of the wearer's abdomen. Inhibits. Therefore, as in the example illustrated in FIG. 17, the recess 56 d that is recessed toward the rear side is provided in the center of the width direction WD of the front edge of the absorber 56, thereby facilitating deformation of the absorber 56. It is also a preferable form to reduce the inhibition of the fit caused by.

  Further, since the tape-type disposable diaper is formed of a flat sheet, even if the side panel 13 is connected obliquely downward along the lower side of the bulge of the wearer's abdomen, Wrinkles are inevitable, and there is room for improving fit in this respect. Therefore, as in the example shown in FIG. 17, by providing a recess (removal part) Fd recessed in the rear side at the center in the width direction WD of the front edge of the ventral part F, the deformation of the ventral part F can be performed. It is also one preferred form that facilitates and prevents a decrease in fit due to wrinkling on the ventral portion F.

<Explanation of terms in the specification>
The following terms in the specification have the following meanings unless otherwise specified in the specification.
・ "Longitudinal direction LD (vertical direction)" means the direction connecting the ventral side (front side) and back side (rear side), and "width direction WD" means the direction (left and right direction) orthogonal to the front and rear direction. The “thickness direction TD” means a direction orthogonal to the front surface and the back surface.
・ "Front side" means the side closer to the skin when worn, and "Back side" means the side far from the skin when worn.
-“Deployed state” means a state in which a natural length is extended and completely flattened without contraction or sagging.
“Elongation rate” means a value when the natural length is 100%.
-"Gel strength" is measured as follows. Add 1.0 g of superabsorbent polymer to 49.0 g of artificial urine and stir with a stirrer. The produced gel is left in a constant temperature and humidity chamber of 40 ° C. × 60% RH for 3 hours and then returned to room temperature, and the gel strength is measured with a card meter (Curdmeter-MAX ME-500, manufactured by I.techno Engineering).
"Artificial urine" is urea: 2 wt%, sodium chloride: 0.8 wt%, calcium chloride dihydrate: 0.03 wt%, magnesium sulfate heptahydrate: 0.08 wt%, and ion-exchanged water: 97 0.09 wt% mixed, and used at a temperature of 37 degrees unless otherwise specified.
・ "Weight" is measured as follows. After the sample or test piece has been pre-dried, it is left in a test room or apparatus in a standard state (test location is temperature 23 ± 1 ° C., relative humidity 50 ± 2%) to a constant weight. Pre-drying refers to making a sample or test piece constant in an environment at a temperature of 100 ° C. In addition, it is not necessary to perform preliminary drying about the fiber whose official moisture content is 0.0%. From the test piece in a constant weight state, a sample plate (100 mm × 100 mm) is used to cut a sample having a size of 100 mm × 100 mm. The weight of the sample is measured, multiplied by 10, and the weight per square meter is calculated and used as the basis weight.
-"Water absorption" is measured by JIS K7223-1996 "Test method for water absorption of superabsorbent resin".
・ "Water absorption rate" is "Time to end point" when JIS K7224-1996 "Water absorption rate test method for superabsorbent resin" is performed using 2 g of superabsorbent polymer and 50 g of physiological saline. And
・ If there is no description about the environmental conditions in the test and measurement, the test and measurement shall be performed in a standard laboratory (test location: temperature 23 ± 1 ° C, relative humidity 50 ± 2%) in a test room or equipment. To do.
-Unless otherwise specified, the dimensions of each part mean dimensions in a deployed state, not a natural length state.

  The present invention is applicable to a tape-type disposable diaper as in the above example.

  DESCRIPTION OF SYMBOLS 10 ... Main body, 11 ... Liquid impervious sheet, 12 ... Exterior sheet, 13 ... Side panel, 13A ... Connection part, 13B ... Base end part, 13C ... Support piece, 13E ... Side expansion-contraction area | region, 13u ... Lower edge, 20 ... Target sheet, 30 ... Top sheet, 40 ... Intermediate sheet, 50 ... Absorbing element, 56 ... Absorber, 58 ... Packaging sheet, 60 ... Gathering, 62 ... Gather sheet, 63 ... Gather elastic member, 70 ... Side elastic member , 81 ... 1st part, 81b ... Back side fixing part, 81f ... Back side free part, 82 ... Second part, 82b ... Front side fixing part, 82f ... Front side free part, 82t ... Upper edge, 90 ... Waist elastic sheet, 95 ... Intermediate stretchable region, 96: Non-stretchable region, B: Dorsal side portion, C: Center in the front-rear direction, CP: Intermediate portion, EF ... End flap portion, F ... Ventral side portion, LD ... Longitudinal direction, SF ... Rhino Flap portion, TD ... the thickness direction, WD ... width direction, WP ... wing portions.

Claims (8)

While having a ventral part extending to the front side from the front-rear direction center, and a dorsal part extending to the rear side from the front-rear direction center,
Having side panels attached to both sides of the dorsal part,
The side panel includes a base end portion attached to the back side portion, a connecting portion detachably connected to an outer surface of the ventral side portion, and at least a portion between the base end portion and the connecting portion. A side stretchable region extending and contracting in the width direction provided in the
In tape-type disposable diapers,
A first portion located on the back side of the side panel and extending from the side edge of the back side portion toward the center in the width direction, and located on the front side of the side panel, from the side edge of the back side portion to the side panel A second portion extending to the center in the width direction through the lower side,
The first portion has a back side fixing portion fixed to a surface adjacent to the front side,
The second portion extends from the side edge of the dorsal portion to the center in the width direction, the front free portion not fixed to the surface adjacent to the back side, and the back side adjacent to the center in the width direction of the front side free portion A front side fixing portion fixed to a surface adjacent to
In a state where the side panel is opened to the side, the lower edge of the side stretchable region in the side panel is pressed against the upper edge of the front-side free part in the second portion. 1 part and 2nd part are arranged,
A tape-type disposable diaper characterized by that. The upper edge of the front free part in the second part extends obliquely upward toward the side,
The tape-type disposable diaper according to claim 1. A body having an absorbent body and extending in the front-rear direction over the ventral portion and the dorsal portion;
The main body has a side flap portion extending to the side than the side edge of the absorber,
The side panel is attached to the side flap part,
As a sheet constituting the side flap portion, a sheet having the first part and the second part is provided.
The tape-type disposable diaper according to claim 1 or 2. The body is
A liquid-impermeable sheet covering the back side of the absorber;
An exterior sheet covering the back side of the liquid-impermeable sheet;
A root portion fixed to a region including the side flap portion, a protruding portion extending from the root portion, a lying portion in which both front and rear direction ends of the protruding portion are fixed in a lying state, and the front and rear of the protruding portions A gathering sheet having a non-fixed rising part located between the lying parts, and a gathering elastic member fixed in a stretched state in the front-rear direction at least at the tip of the rising part,
With
In the side flap portion, the gather sheet, the liquid-impermeable sheet, and the exterior sheet are laminated,
Only the exterior sheet has a first part located on the back side of the side panel, and a second part located on the front side of the side panel and folded back on the side edge of the back side part. And
Of the first part formed by the exterior sheet, the part overlapping the back side of the side panel is not joined to the side panel,
The second part formed by the exterior sheet does not have the front side fixing part on the rear side of the lower edge of the side panel, and the front side fixing part is the same as or lower than the lower edge of the side panel. Have
The tape-type disposable diaper according to claim 3. The gather sheet is located on the center side in the width direction from the base end of the side panel,
A waist stretchable sheet that stretches in the width direction is provided over a portion that overlaps the base end of both side panels in the back side portion,
The tape-type disposable diaper according to claim 4. It has a target sheet to which the connecting part of the side panel is connected to the outer surface of the waist part of the ventral part,
At least the lower edge of the target sheet extends obliquely downward toward the center in the width direction,
The tape type disposable diaper of any one of Claims 1-5. An absorbent body, and a sheet covering the back side of the absorbent body, comprising a main body extending in the front-rear direction over the ventral part and the back part;
In the center in the width direction of the front edge of the absorber, it has a recess recessed in the rear side,
The tape type disposable diaper of any one of Claims 1-6. In the center in the width direction of the front edge of the ventral part, it has a recess recessed in the rear side,
The tape-type disposable diaper of any one of Claims 1-7.

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