JP5743414B2 - Tape type disposable diaper - Google Patents

Description

  The present invention relates to a tape-type disposable diaper that can be changed in size and size of a frontal target tape by making the frontal target tape detachable.

  There are mainly three types of paper diapers: tape type, pants type and pad type. The tape-type disposable paper diaper is equipped with a fastening tape to be worn by users such as infants. The fastening tape is attached to a frontal target tape (hereinafter referred to as “FTT” as appropriate). ”) Has existed conventionally.

  The main purpose of this FTT is to prevent the fastening tape from damaging the exterior sheet or coming off from the exterior sheet during use. Since the exterior sheet is reinforced by a sheet-like film, it is also called a reinforcing film. It was. In other words, the FTT-less diaper which does not use this FTT has an advantage that the size adjustment of the diaper is easy, but the FTT-less diaper has a disadvantage that reinforcement is required and the manufacturing cost increases. In addition, there was a disadvantage that only an exterior sheet having high engagement force with the fastening tape could be used.

In addition, as a FTT-less tape-type diaper, there is known a strip sheet provided with a target print on which the fastening position of the fastening tape is displayed, and the print is provided so as to be visible from the outside. (Patent Document 1).
As described above, many tape-type diapers are provided with an FTT, but a pattern that an infant prefers is generally attached to the FTT according to the infant using the tape-type diaper. Yes.

Japanese Patent Laid-Open No. 2003-153952 Japanese Unexamined Patent Publication No. 2005-13598

Although there are many types of the above-mentioned FTT patterns on tape-type diapers, infants who use tape-type diapers used FTT diapers with their favorite patterns. As a result, diapers other than a specific pattern remain unused and are wasted. On the other hand, the tape-type diaper provided with the FTT has a drawback that the size cannot be adjusted in the same manner as the FTT-less.
In addition, although the underpants type diaper with a emblem sheet which can replace the design by enabling re-adhesion and re-peeling is known (Patent Document 2), there is no conventional one corresponding to FTT.

  Then, the main subject of this invention is obtaining the tape-type disposable diaper which enabled the change of the pattern of a frontal target tape, and the adjustment of the size by making a frontal target tape removable.

The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
A pad body having an absorbent body capable of absorbing liquid on one side, and a liquid-impermeable back sheet on the back side of the absorbent body,
Fastening tape attached to the other side of the pad body and having an engaging portion on the surface;
A frontal target tape that is detachably disposed on the other surface side of the pad main body and that indicates the fastening position of the fastening tape and has a handle on the surface;
With
The back sheet is provided with an exterior sheet made of non-woven fabric, a hook material is provided on one side of the frontal target tape, and the hook material on one side of the frontal target tape is attached to and detached from the exterior sheet. The target tape is removable on the other side of the pad body,
A tape-type disposable diaper with a mark indicating the basic mounting position of the frontal target tape in the pad body.

(Function and effect)
According to the tape type disposable diaper of this claim, it has a frontal target tape for indicating the fastening position of the fastening tape attached to the pad body, but in this claim, it can be attached to and detached from the pad body. Frontal target tape is used. By removing and moving this frontal target tape, it is possible not only to adjust the size according to the physique of the user when using a tape-type disposable diaper, but also after using this tape-type disposable diaper, The target tape can be removed and attached to the pad body of a new tape-type disposable diaper.

  Therefore, for example, it is possible not only to change the pattern by simply changing the frontal target tape to another one, but also to continue using the frontal target tape with a pattern that the infant who is the user likes and likes it for a long time. Became. In addition, since the frontal target tape can be reused, the number of frontal target tapes used in the diaper can be reduced and the cost can be reduced. That is, not only is the tape-type disposable diaper not wasted, but the frontal target tape can be reused, and the number of frontal target tapes can be reduced.

  As mentioned above, according to the tape type disposable diaper of this claim, the change of the pattern of a frontal target tape and adjustment of a size can be performed now easily by enabling attachment and detachment of a frontal target tape.

Moreover, according to the tape type disposable diaper of this claim, a hook material is provided on one side of the frontal target tape so that the outer sheet made of nonwoven fabric is provided on the back side of the back sheet and can be attached to and detached from the outer sheet. Is provided. For this reason, the frontal tape and the hook material on one side of the frontal target tape work in the same way as a hook-and-loop fastener, so that the frontal target tape can be securely fixed when necessary, and removed and moved to another location. If desired, the frontal target tape can be peeled off once and reattached.
<Invention of Claim 2>
The frontal target tape includes a lower reinforcing material formed in an annular shape, a sheet base material that is formed in an annular shape and narrower than the lower reinforcing material, and is disposed along the inner peripheral side of the lower reinforcing material, and An upper reinforcement formed in a strip shape with the same width as the lower reinforcement attached to the upper side ;
A plurality of patterns are continuously drawn on the sheet base material along the length of the sheet base material ,
A pair of slits are provided on the upper surface side of the lower reinforcing material so as to extend in a direction orthogonal to the longitudinal direction of the lower reinforcing material,
A pair of slits are provided at the left and right ends on the lower surface side of the lower reinforcing material so as to extend in a direction orthogonal to the longitudinal direction of the lower reinforcing material,
The sheet base material is located on the outer peripheral side of the lower reinforcing material between the pair of slits on the upper surface side of the lower reinforcing material and between each pair of slits present on the left and right ends on the lower surface side of the lower reinforcing material,
The sheet base material is movable relative to the lower reinforcement,
In the central part corresponding to the space between the pair of slits in the upper reinforcing material, a rectangular window is provided, and the portion of the sheet base material existing between the pair of slits is visible from the window. ,
Among the plurality of patterns drawn on the sheet base material, the pattern located between the pair of slits on the upper surface side of the lower reinforcing material is displayed outside through the window portion of the upper reinforcing material and is configured to be visible. The tape-type disposable diaper according to claim 1.

<Invention of Claim 3>
The tape-type disposable diaper according to claim 1 or 2, wherein a hook material is provided on the entire surface of one side of the frontal target tape.

(Function and effect)
According to the tape type disposable diaper of this claim, since the hook material is provided on the entire surface of one side of the frontal target tape, the engaging force per unit area of the hook material with respect to the back sheet is used for the FTT-less diaper. Even when the engaging portion is lower than the engaging portion, the engaging area becomes large, so that there is no problem in using the hook material. Therefore, a wider material than the FTT-less diaper can be used for the exterior sheet.

  As described above, according to the present invention, by making the frontal target tape detachable, it is possible to obtain a tape-type disposable diaper that can change the pattern of the frontal target tape and adjust the size.

It is a top view in the state where the diaper was developed showing the inner surface of the tape type disposable diaper concerning a 1st embodiment. It is a top view in the state where the diaper was developed showing the outer surface of the tape type disposable diaper concerning a 1st embodiment. FIG. 6 is a sectional view taken along line 6-6 of FIG. FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 1. FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 1. FIG. 9 is a sectional view taken along line 9-9 in FIG. 1. It is a principal part disassembled perspective view of the tape-type disposable diaper which concerns on 1st Embodiment. It is principal part sectional drawing of the tape type disposable diaper which concerns on 1st Embodiment. It is a principal part disassembled perspective view of the tape type disposable diaper which concerns on 2nd Embodiment. It is a principal part disassembled perspective view of the tape-type disposable diaper which concerns on 3rd Embodiment. It is a principal part top view of the tape type disposable diaper which concerns on 4th Embodiment. It is a disassembled perspective view of the target sheet | seat applied to the tape type disposable diaper which concerns on 5th Embodiment. It is a perspective view of the target sheet applied to the tape type disposable diaper which concerns on 5th Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, “front-rear direction (vertical direction)” means a direction connecting the ventral side (front side) and back side (rear side), and “width direction” means a direction (left-right direction) perpendicular to the front-rear direction. "Vertical direction" means the wearing state of the diaper, that is, the width when the diaper is folded in two at the crotch so that the both sides of the diaper and the back part of the diaper overlap each other It means the direction orthogonal to the direction.

  1 to 8 show a first embodiment of a tape-type disposable diaper. 3 and 4 are views showing a cross section taken along line 6-6 and 7-7 in FIG. 1, respectively, and FIGS. 5 and 6 are cross sections taken along line 8-8 and 9-9 in FIG. FIG. This tape-type disposable diaper is a part that extends from the lower abdomen through the crotch part to cover the buttocks along the center in the width direction, and a liquid-permeable surface sheet that forms the body-side surface, and the outer surface side The absorbent main body 10 is a part where the absorbent element 50 is interposed between the liquid-impermeable sheet positioned in the front and the pad main body, and extends to the front side and the rear side of the absorbent main body 10. It has a ventral side end flap part FE and a back side end flap part BE, which are parts and do not have the absorbent element 50, and are also the pad body.

  The tape-type disposable diaper includes a pair of abdominal side flap portions FF, FF extending to the outside in the width direction from the crotch portion C on both sides of the upper edge F1 side portion of the abdominal side F, and a back side B. On both sides of the upper edge B1 side portion, a pair of back side flap portions BF, BF extending to the outside in the width direction from the crotch portion C are provided. Moreover, the fastening tape 13 as a locking member is provided in the back side flap part BF and BF, respectively.

  More specifically, the entire outer surface of the absorbent main body 10 and the side flap portions BF and FF on the back side and the abdomen side is formed by the exterior sheet 12. In particular, in the absorbent main body 10, a liquid-impermeable sheet 11 that is a back sheet is fixed to the inner surface side of the exterior sheet 12 with an adhesive such as a hot melt adhesive, and further, the inner surface of the liquid-impermeable sheet 11. The absorbent element 50, the intermediate sheet 40, and the top sheet 30 are laminated in this order on the side. The top sheet 30 and the liquid-impermeable sheet 11 are rectangular in the illustrated example, have a slightly larger dimension in the front-rear direction and the width direction than the absorbent element 50, and are eaten from the side edges of the absorbent element 50 in the top sheet 30. The peripheral edge that protrudes 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. The liquid-impermeable sheet 11 is made of a moisture-permeable polyethylene film or the like, and is formed to be slightly wider than the top sheet 30.

  Further, side barrier cuffs 60, 60 projecting (standing) on the skin side of the wearer are provided on both sides of the absorbent main body 10, and a barrier sheet forming the side barrier cuffs 60, 60 is provided. 62 and 62 are extended over the whole width direction outer side of the absorptive main-body part 10 including the inner surface of each side flap part BF and FF of back side and abdominal side.

Hereinafter, the material and the characteristic part of each part are demonstrated in order.
(Exterior sheet)
The exterior sheet 12 is a part that supports the absorbent element 50 and is attached to the wearer. The exterior sheet 12 has an hourglass shape in which the center part in the front-rear direction on both sides is constricted, and this is a part into which the wearer's leg is placed.
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 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 15 to 30 g / m ² .

(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, a liquid-impermeable and moisture-permeable material that has 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 leak-proofing by reducing the voids of the fiber by applying heat or pressure, and applying water-absorbing resin or hydrophobic resin or water repellent. A sheet that is liquid-impermeable without using a film can also be used as the liquid-impermeable sheet 11.

(Surface sheet)
The top sheet 30 is sufficient if it has liquid permeability, and for example, a porous or non-porous nonwoven fabric or a porous plastic sheet can be used. Of these, 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.

  Further, 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.

(Intermediate sheet)
An intermediate sheet (also referred to as a second sheet) 40 can be provided between the surface sheet 30 and the absorbent element 50 in order to move excrement that has passed through the surface sheet 30 to the absorber 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 the surface of the top sheet 30 has a good touch. To do. The intermediate sheet 40 can be omitted.

  As the intermediate sheet 40, 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 a melting point similar to that of 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 is hardly generated, but the solid content of the stool is hardly transmitted. 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 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.

(Side barrier cuffs)
Side barrier cuffs 60, 60 that protrude (stand up) on the use surface side are provided on both sides of the product in order to prevent urine and soft stool that move laterally on the top sheet 30 and prevent side leakage. Is preferred.
The side barrier cuff 60 includes a barrier sheet 62 that is substantially continuous in the width direction, and an elongated elastic elastic member 63 that is fixed to the barrier sheet 62 in a stretched state along the front-rear direction. As the barrier sheet 62, a water-repellent nonwoven fabric can be used, and as the elastic elastic member 63, thread rubber or the like can be used. As shown in FIGS. 1 and 2, a plurality of elastic elastic members can be provided in addition to a plurality of elastic expansion members.

  The inner surface of the barrier sheet 62 has a fixing start end in the width direction on the side portion of the top sheet 30, and a portion on the outer side in the width direction from the fixing start end is on the side portion of the liquid-impermeable sheet 11 and on the outer side in the width direction. It fixes to the side part of the exterior sheet | seat 12 located with the hot-melt-adhesive agent etc. Out of the adhering portions, on the outer side in the width direction in the vicinity of the adhering start end, leg elastic elastic members 64 made of rubber thread or the like are provided along the front-rear direction between the sheets of the portions where the barrier sheet 62 and the exterior sheet 12 face each other. It has been.

Around the leg, the width direction inner side of the side barrier cuff 60 is fixed on the top sheet 30 at both ends in the longitudinal direction of the product, but the portion between them is an unfixed free part. The portion comes to stand by the contraction force of the rubber thread 63. When the diaper is worn, the diaper is attached to the body in the shape of a boat, and the contraction force of the rubber thread 63 acts, so that the side barrier cuffs 60 stand up and adhere to the legs around the contraction force of the rubber thread 63. . As a result, so-called side leakage from around the legs is prevented.
Unlike the illustrated embodiment, the front and rear direction end portions of the barrier sheet 62 on the inner side in the width direction are divided into a base end side portion extending from the outer side in the width direction to the inner side in the width direction and a center side in the width direction of the base end side portion. It is also possible to fix in a double-folded state having a distal end side portion that is folded back from the edge toward the body side and extends outward in the width direction, and the portion in between can be an unfixed free portion.

(Absorption element)
The absorption element 50 is a part that absorbs and holds liquid such as urine and loose stool. The absorbent element 50 includes an absorbent body 56 and a packaging sheet 58 that wraps at least the back and side surfaces of the absorbent body 56. The packaging sheet 58 can be omitted. 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.

(Superabsorbent polymer particles)
The absorbent body 56 preferably includes superabsorbent polymer particles. In particular, at least in the liquid receiving region, the superabsorbent polymer particles (SAP particles) are dispersed substantially throughout the thickness direction with respect to the aggregate of fibers. Is desirable.
If there is no SAP particle in the upper part, the lower part, and the middle part of the absorber 56, or if there is very little, it cannot be said that the "absorbed throughout the thickness direction". Therefore, “distributed in the entire thickness direction” means “distributed unevenly in the upper part, the lower part, and / or the middle part of the aggregate of fibers in addition to the form“ uniformly ”distributed in the entire thickness direction. However, it is still included in the form of being dispersed in the upper, lower and middle portions. Further, a form in which some SAP particles do not enter the fiber assembly and remain on the surface thereof, and a form in which some SAP particles pass through the fiber assembly and are on the packaging sheet 58 are also excluded. It is not something.

  Superabsorbent polymer particles include “powder” in addition to “particles”. As the particle diameter of the superabsorbent polymer particles, those used in this type of absorbent article can be used as they are, and those having a particle size of 1000 μm or less, particularly 150 to 400 μm are desirable. 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 40 seconds or less are preferably used. When the water absorption speed exceeds 40 seconds, so-called reversion in which the liquid supplied into the absorber 56 returns to the outside of the absorber 56 is likely to occur.
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 set to 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 , not only the effect is saturated, but also the sensation of incongruity due to the excess of the superabsorbent polymer particles is given.

(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 SMMS (spunbond / meltblown / meltblown / spunbond) nonwoven fabric is particularly suitable, and polypropylene, polyethylene / polypropylene, etc. can be used as the material. The fiber basis weight is preferably 5 to 40 g / m ² , particularly 10 to 30 g / m ² .

  As shown in FIG. 3, the packaging sheet 58 may wrap only the back surface and the side surface of the layer in addition to the form for wrapping the entire absorbent body 56. Although not shown, only the upper and side surfaces of the absorbent body 56 are covered with crepe paper or a nonwoven fabric, and the lower surface is covered with a liquid-impermeable sheet such as polyethylene, and the upper surface of the absorbent body 56 is covered with crepe paper or a nonwoven fabric. For example, the lower surface may be covered with a liquid-impermeable sheet such as polyethylene (each of these materials is a component of the packaging sheet). If necessary, the absorbent body 56 may be sandwiched between two upper and lower sheets or disposed only on the lower surface, but this is not desirable because it is difficult to prevent the movement of the superabsorbent polymer particles.

(Fastening tape)
As described above, in the present embodiment, the structure having the absorbent body 56 capable of absorbing liquid on one side and the liquid-impermeable liquid-impermeable sheet 11 on the back side of the absorbent body 56 is provided. The absorptive main body part 10 etc. which are pad main bodies are formed. As shown in FIGS. 1 and 2, the fastening tape 13 attached to the back side flaps BF, BF on the other side of the absorbent main body 10 is a non-woven fabric, a plastic film, or a polylaminated non-woven fabric. The base of the sheet base material 13C made of paper or a composite material thereof is provided, and this base is attached to the diaper. A hook material 13A of a mechanical fastener is provided on the surface of the tip side portion of the sheet base 13C protruding from the diaper as a locking portion for the abdomen. The hook material 13A is joined to the sheet base 13C with an adhesive so as not to be peeled off.

  In the baby diaper, among the dimensions of the attachment portion of the fastening tape 13, the length X1 of the diaper in the width direction is preferably 10 to 50 mm, particularly 20 to 40 mm, and the length Y1 in the front-rear direction is 20 to 20 mm. It is preferably 100 mm, particularly 40 to 80 mm. Of the dimensions of the front end side portion of the fastening tape 13, the length of the diaper in the width direction is preferably 30 to 80 mm, particularly preferably 40 to 60 mm, and the length (height) in the front-rear direction is 20 to 70 mm. In particular, the thickness is preferably 25 to 50 mm.

  In addition, when a part or all of the fastening tape 13 has a substantially tapered shape, for example, and the length in the front-rear direction and the length in the width direction are not constant, the numerical range is determined by an average value. The fastening tape 13 may have a symmetrical shape such as a rectangular shape. However, if the fastening tape 13 is a convex shape composed of a wide attachment portion and an elongated tip side portion, the grip portion on the tip side portion can be easily picked and This is preferable because the tension between the bases of this region acts over a wide range. The hook member 13A has a large number of engaging protrusions on the outer surface side. The shape of the engaging protrusion is (A) Le-shaped, (B) J-shaped, (C) Mushroom-shaped, (D) T-shaped, (E) Double J-shaped (J-shaped And the like may be any shape. Instead of the hook material 13 </ b> A, an adhesive material layer can be provided as a locking portion of the fastening tape 13.

When the diaper is worn, the fastening tape 13 is locked at a suitable position on the outer surface of the abdominal side F with the back side flap portion BF being overlapped on the outside of the abdominal side flap portion FF.
The position and size of the fastening portion of the fastening tape 13 can be arbitrarily determined. In diapers for infants, the locking location is a rectangular range of 20 to 80 mm in the front-rear direction and 150 to 300 mm in the width direction, and the distance in the height direction between the upper edge and the ventral upper edge is 0 to 60 mm, particularly 20 to 50 mm. And the center in the width direction of the product.

  When the fastening tape 13 is attached so that the attachment portion of the fastening tape 13 overlaps the boundary line between the back end flap portion BE and the absorbent element 50, the tension acting between the attachment portions of the left and right fastening tapes 13 when the diaper is attached. This is preferable because the back side end of the absorbent element 50 is firmly pressed against the body. Moreover, if the attachment part of the fastening tape 13 is too far from the back side end part (rear end part) of the diaper, the tension acting between the attachment parts of the left and right fastening tapes 13 when the diaper is mounted is the back side end part of the diaper. Therefore, a gap is likely to occur between the back end of the diaper and the body surface. Therefore, the length in the front-rear direction of the back end flap BE is preferably the same as or shorter than the length in the front-rear direction of the base portion of the fastening tape 13.

(Target sheet)
A fastening position for facilitating the locking of the fastening tape 13 on the ventral side F, which is a portion on the exterior sheet 12 made of nonwoven fabric disposed on the other surface side of the absorbent main body 10. It is preferable to provide a target sheet 74, which is a frontal target tape for displaying the above, as shown in FIGS. The target sheet 74 has a structure in which a strip-shaped sheet base material 74A forms a main part, and a hook material 74B of a mechanical fastener is provided on the entire back surface side which is one surface side of the target sheet 74. Yes. The hook material 74B is joined to the sheet base material 74A by an adhesive so as not to be peeled off.

  The hook material 74B has a large number of engaging projections on the outer surface side thereof, like the hook material 13A. The shape of the engaging protrusion is (A) Le-shaped, (B) J-shaped, (C) Mushroom-shaped, (D) T-shaped, (E) Double J-shaped (J-shaped And the like may be any shape. That is, the engagement projection of the hook material 74B is entangled with the exterior sheet 12 made of nonwoven fabric, so that the target sheet 74 is detachably disposed on the exterior sheet 12.

  On the surface side of the target sheet 74, a pattern (not shown) that an infant prefers is provided by printing or the like so that the fastening position of the fastening tape 13 can be displayed more clearly. In the target sheet 74, when the fastening portion of the fastening tape 13 is the hook material 13A, a large number of loop yarns are provided on the surface of the sheet base material made of a plastic film or non-woven fabric so that the engagement protrusions of the hook material 13A are entangled. In addition, when the locking part is an adhesive material layer, the surface of a sheet base material made of a plastic film having a smooth surface that is rich in adhesiveness can be used. .

(End flap)
The end flap part is a part that extends to the front side and the rear side of the absorbent main body 10 and does not have the absorbent element 50, and the front extension part is the ventral end flap part FE. The extended portion on the rear side is the back end flap portion BE.
The length in the front-rear direction of the back end flap BE is preferably the same as or shorter than the length in the front-rear direction of the attachment portion of the fastening tape 13 for the reasons described above. If it is too close, a gap is likely to occur between the back end of the diaper and the body surface due to the thickness and stiffness of the absorbent element 50, so that it is preferably 10 mm or more.
The length in the front-rear direction of the ventral end flap part FE and the back end flap part BE is preferably about 5 to 20% of the length L in the front-rear direction of the whole diaper. In particular, a thickness of 20 to 50 mm is appropriate.

(Back elastic sheet)
In the illustrated form, a belt-like back-side elastic sheet 70 that elastically expands and contracts in the width direction is provided between the fastening tapes 13 to improve the fit in the diaper back side. Both end portions of the back-side elastic sheet 70 are preferably extended to a portion that overlaps with the attachment portions of both fastening tapes 13, but may be separated to the center in the width direction. The back-and-forth stretchable sheet 70 has a front-rear dimension that is approximately the same as the front-rear dimension of the attachment portion of the fastening tape 13, but may have a dimensional difference of about ± 20%. Further, when the back elastic sheet 70 is arranged so as to overlap the boundary line between the back end flap BE and the absorbent element 50 as shown, the back end of the absorbent element 50 is firmly pressed against the body. Therefore, it is preferable. The back-side elastic sheet 70 may use a sheet-like elastic member such as a rubber sheet, but it is preferable to use a nonwoven fabric or paper 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. 5, the sheet base material 71 such as two nonwoven fabrics is bonded with an adhesive such as a hot melt adhesive. Preferably, the elastic stretch member 72 such as a perforated sheet, net, or elongated (thread or string) is fixed in a stretched state in the width direction between the sheet bases 71. Used. As the sheet base 71 in this case, the same one as the exterior sheet 12 can be used. It is preferable that the elastic expansion / contraction member 72 has an extension ratio of about 150 to 250%. In addition, when an elongated (stretch or string-like) member is used as the elastic elastic member 72, it is preferable to provide about 5 to 15 members having a thickness of 420 to 1120 dtex at intervals 72d of 3 to 10 mm.

  In addition, it is preferable that a part of the elastic expansion / contraction member 72 is arranged so as to cross the absorbent element 50 as shown in the figure because the fitting property of the absorption element 50 is improved, but in this case, the elastic expansion / contraction member 72 is used. If the contraction force is prevented from acting on a part or all of the overlapping portion by means such as cutting, the back end of the absorbent element 50 does not contract in the width direction, so that the fit is further improved.

The elastic elastic member 72 may be fixed over the entire length of the sheet base material 71 in the longitudinal direction of the sheet (width direction of the diaper), but in order to prevent the sheet from shrinking or curling when attached to the diaper body, In the range of about 5 to 20 mm at the end in the front-rear direction (diaper width direction), it is preferable that the contraction force does not work or the elastic elastic member 72 does not exist.
In the illustrated embodiment, the back-side stretchable sheet 70 is sandwiched between the barrier sheet 62 and the exterior sheet 12 on both sides in the width direction of the liquid-impermeable sheet 11 and overlaps with the liquid-impermeable sheet 11. Although provided so as to be sandwiched between the permeable sheet 11 and the absorbent element 50, it may be provided between the liquid-impermeable sheet 11 and the exterior sheet 12, or provided on the outer surface of the exterior sheet 12. Alternatively, it may be provided between the top sheet 30 and the absorbent element 50. Further, the back-side elastic sheet 70 may be provided on the top sheet 30, and in this case, it may be provided on the barrier sheet 62 on both sides in the width direction of the liquid-impermeable sheet 11. Further, when the exterior sheet 12 is formed by stacking a plurality of sheet base materials, the entire back-side stretchable sheet 70 may be provided between the sheet base materials of the exterior sheet 12.

(indicator)
An indicator 80 that is colored or decolored according to the liquid content of the excrement can be provided at a portion that can come into contact with the liquid content of the excrement. The indicator 80 is colored by a colorant that shows a color reaction by contact with moisture such as body fluid and / or a colorant that shows a color reaction by detecting pH in the water, or a reaction with body fluid. The reaction that disappears, the colorant dissolves (disperses) in the urine, disperses or disappears, the ink or adhesive containing the drug showing other visual changes, or the contact with water or body fluid It is comprised by the sheet-like member containing the chemical | medical agent (indicator reaction means) which shows a change. For example, as a colorant that exhibits a color reaction upon contact with moisture such as a body fluid, a water-soluble, water-decomposable dye or leuco dye and a phenolic compound that develops color of the leuco dye, an acidic substance, an electron-accepting substance, etc. It is possible to use a colorant consisting of the above developer.

The color that appears by coloration is not particularly limited, but it is difficult to see the same color (usually white) as the outer surface of the diaper, so that a color that is different from the outer surface of the diaper is suitable.
The indicator 80 composed of the above-described ink or adhesive is applied to a predetermined application region as shown in FIGS. The indicator 80 shown in FIG. 2 and FIG. 3 shows the above-described ink or adhesive application area. This region is preferably included in the arrangement range of the absorber 56, is located in the center in the width direction, has a width of about 0.3 to 14 cm, preferably about 0.5 to 2 cm, and is a diaper full length L. It is an area | region of 60-90% of this, and is an area | region where the contact with the excretion absorbed by the absorber 56 is performed efficiently. The indicator 80 may be provided at a position where it can be seen from the inner surface of the diaper or at a position where it can be seen from the three-dimensional gathers around the legs, but the back surface of the absorbent body 56 and the liquid can be seen from the outer surface of the diaper. Formed by applying an ink or an adhesive constituting the indicator 80 between the impermeable sheet 11, specifically, the side surface of the absorber 56 of the liquid impermeable sheet 11, or the inner surface or outer surface of the packaging sheet 58. It is desirable to do. The application pattern is not particularly limited, and it can be applied in the form of a large number of streaks as shown in the illustrated example, or in the form of a surface, a band, or the like. Of course, a sheet on which the indicator 80 is formed can be manufactured separately, and the sheet-like indicator 80 can be built in the diaper.

  When the indicator 80 is composed of ink, the component of the indicator 80 is obtained by adding a colorant to the ink. When the indicator 80 is composed of an adhesive, the water-soluble polymer or the hydrophilic polymer is made of resin or the like. To which a water-insoluble component and a colorant are added. Specific examples in the case of comprising an adhesive include a water-insoluble polymer comprising a polyethylene glycol molecular weight of 100 to 500, polyvinyl pyrrolidone, a vinyl acetate copolymer, and a water-soluble polyester. And a colorant that indicates the acidity / alkaline degree (pH) of the liquid in contact by color change.

When the indicator 80 is constituted by an adhesive, various known adhesives can be used as the adhesive. As an example, the case where a hot melt adhesive is used will be described in detail. By using a hot melt adhesive containing a colorant as the indicator 80, the colorant can be prevented from diffusing and leaching, and the sheet-like shape can be prevented. Compared with the case where the indicator is provided, since it can be easily performed in-line, the indicator attaching work process can be greatly saved. At this time, the application amount of the indicator hot melt adhesive is preferably 15 to 40 g / m ² . When the amount is less than 15 g / m ² , the function as an indicator is impaired, and when it is more than 40 g / m ^2, a feeling of stickiness due to the curing of the adhesive occurs.

  On the other hand, when the indicator 80 made of a sheet-like member is used, the sheet-like member is placed between the liquid-impermeable sheet 11 and the absorbent body 56, specifically, between the absorbent body 56 and the inner surface of the packaging sheet 58. Alternatively, it is arranged between the back surface of the packaging sheet 58 and the liquid-impermeable sheet 11. When this sheet-like indicator 80 is used, the number of members is increased as compared with the case where the liquid indicator 80 is applied and provided, but it can be easily used in a necessary amount in a necessary portion. Thus, the cost can be reduced by reducing the use area of the sheet-like member including the indicator reaction means.

Next, the effect | action of the tape type disposable diaper which concerns on this Embodiment is demonstrated below.
According to the tape-type disposable diaper of the present embodiment, the target sheet 74 for indicating the fastening position of the fastening tape 13 attached to a member such as the absorbent main body 10 is provided. Then, the target sheet | seat 74 which is a frontal target tape which can be attached or detached with respect to the absorptive main-body part 10 etc. is used.

  And by removing and moving the target sheet 74 with respect to the absorbent main body 10 and the like, not only can the size be adjusted according to the physique of the user, but also the use of the diaper. Later, it became possible to remove the target sheet 74 and attach it to the absorbent main body 10 of a new tape-type disposable diaper.

  Therefore, for example, not only can the pattern be changed by changing the target sheet 74 to another one, but also the target sheet 74 having a pattern that the infant who is a user likes and likes can continue to be used for a long period of time. Became. In addition, since the target sheet 74 can be reused, the number of target sheets 74 used for the diaper can be reduced, and the cost can be reduced. That is, not only is the tape-type disposable diaper not wasted, but the target sheet 74 can be reused and the number of target sheets 74 can be reduced.

  As described above, according to the tape-type disposable diaper of the present embodiment, the pattern of the target sheet 74 can be easily changed and the size of the target sheet 74 can be easily adjusted by making the target sheet 74 removable.

  On the other hand, according to the tape-type disposable diaper of the present embodiment, the target sheet is provided so that the exterior sheet 12 made of nonwoven fabric is provided on the back side of the liquid-impermeable sheet 11 and can be attached to and detached from the exterior sheet 12. A hook material 74 </ b> B is provided on the entire surface of one surface 74. From this, the outer sheet 12 and the hook material 74B on the one surface side of the target sheet 74 function in the same manner as the surface fastener, so that the target sheet 74 can be securely fixed when necessary, and can be removed and placed elsewhere. When it is desired to move the target sheet 74, the target sheet 74 can be peeled off and attached again.

  Further, since the hook material 74B is provided on the entire surface of the one surface side of the target sheet 74, the engagement force per unit area of the hook material 74B with respect to the exterior sheet 12 is greater than that of the engaging portion used for the FTT-less diaper. Even if it is low, there is no problem in the use of the hook material 74B because the engagement area becomes large. Therefore, a wider material than the FTT-less diaper can be used for the exterior sheet 12.

Next, a tape-type disposable diaper according to a second embodiment of the present invention will be described with reference to FIG. Note that the same members as those described in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.
In the present embodiment, the target sheet 74 having the same structure as that of the first embodiment is provided. However, as shown in FIG. 9, the hook material 74B attached to the sheet base material 74A of the target sheet 74 is provided. The strip was divided into a plurality of strips. When there are a plurality of hook members 74B as described above, the size of the hook member 74B per sheet has a width or length smaller than that of the target sheet 74.

  Accordingly, the hook members 74B divided into a plurality of strips in this way are arranged in parallel with each other. However, even in this case, if the necessary minimum engagement force is obtained, the manufacturing cost can be reduced while reducing the manufacturing cost. The same operational effects as those of the first embodiment are obtained.

Next, a tape-type disposable diaper according to a third embodiment of the present invention will be described with reference to FIG. Note that the same members as those described in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.
In the present embodiment, the target sheet 74 having the same structure as that of the first embodiment is provided, but as shown in FIG. 10, between the sheet base material 74A and the hook material 74B of the target sheet 74. In addition, a reinforcing material 74C made of a non-stretchable material is arranged so that the target sheet 74 can be reused for a long time. And it can be considered that the dimension of the reinforcing material 74C has a width dimension and a length dimension that are equal to or equal to or greater than those of the sheet base material 74A.

Next, a tape-type disposable diaper according to a fourth embodiment of the present invention will be described with reference to FIG. Note that the same members as those described in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.
In the present embodiment, the target sheet 74 having the same structure as that of the first embodiment is provided. However, as shown in FIG. Attached to a sheet or a waterproof sheet. As a result, in the present embodiment, since the target sheet 74 can be removed, the target sheet 74 can be placed in various positions. 74 can be securely returned to the original position and pasted.

Next, a tape-type disposable diaper according to a fifth embodiment of the present invention will be described with reference to FIGS. Note that the same members as those described in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.
In the present embodiment, instead of the target sheet 74 of the first embodiment, a target sheet 84 formed in an annular shape as shown in FIGS. 12 and 13 is employed. That is, the target sheet 84 has a lower reinforcing member 84C formed in an annular shape as a main member, and a sheet base material 84A that is also formed in an annular shape and is narrower than the lower reinforcing member 84C. The structure is arranged along the inner peripheral side of the lower reinforcing member 84C. A plurality of patterns (not shown) are continuously drawn on the sheet base 84A along the length of the sheet base 84A.

  Further, a pair of slits 85A are provided on the upper surface side of the lower reinforcing member 84C so as to extend in a direction orthogonal to the longitudinal direction of the lower reinforcing member 84C. A pair of slits 85B are provided at the left and right ends of the lower reinforcing member 84C so as to extend in a direction orthogonal to the longitudinal direction of the lower reinforcing member 84C.

  Accordingly, the sheet base material 84A is located on the outer peripheral side of the lower reinforcing member 84C between the pair of slits 85A, and between each pair of slits 85B existing on the left and right ends on the lower surface side of the lower reinforcing member 84C. In addition, the sheet base material 84A is located on the outer peripheral side of the lower reinforcing material 84C. As a result, the sheet base material 84A is movable relative to the lower reinforcing material 84C as indicated by an arrow R.

  Further, an upper reinforcing member 84D formed in a strip shape having the same width as the lower reinforcing member 84C is attached to the upper side of the lower reinforcing member 84C. However, a square-shaped window portion 86 is provided in a central portion corresponding to the space between the pair of slits 85A of the upper reinforcing member 84D, and the portion of the sheet base material 84A existing between the pair of slits 85A is provided. The window 86 is visible. For this reason, the pattern located between the pair of slits 85A among the plurality of patterns drawn on the sheet base material 84A is displayed.

  And the hook material 84B similar to 1st Embodiment is affixed on the lower side of the lower reinforcement material 84C. Therefore, also in the present embodiment, the outer sheet 12 and the hook material 84B on the one surface side of the target sheet 84 function in the same manner as the hook-and-loop fastener, so that the target sheet 84 can be reliably fixed when necessary. When the user wants to remove the target sheet 84 and move it to another place, the target sheet 84 can be peeled off and attached again. Furthermore, when necessary, by rotating the sheet base 84A as indicated by the arrow R, the design of the sheet base 84A displayed between the pair of slits 85A can be changed.

  In the above embodiment, the dimensions of the target sheets 74 and 84 only have to be general sizes used for diapers. Furthermore, the hook materials 74B and 84B can be made of a material that can be joined to the exterior sheet 12. Further, it is desirable that the width dimension of the hook material 74B is in the range of 2.4 to 103% of the target sheet 74, and the length dimension is in the range of 11.1 to 520% of the target sheet 74.

  On the other hand, when the mark S on the diaper side in the fourth embodiment is extremely small with respect to the target sheet 74, the target sheet 74 side is also marked so as to match the mark on the diaper side. Can be considered. Further, as described above, it is conceivable that a material having no elasticity is used for the reinforcing material, and the dimensions are equal to or larger than the target sheet.

  The present invention can be used for a tape-type disposable diaper.

10 ... Absorbent body (pad body)
11. Liquid impervious sheet (back sheet)
12 ... exterior sheet 13 ... fastening tape 56 ... absorber 74 ... target sheet (frontal target tape)
74B ... hook material 84 ... target sheet (frontal target tape)
84B ... Hook material

Claims (3)

A pad body having an absorbent body capable of absorbing liquid on one side, and a liquid-impermeable back sheet on the back side of the absorbent body,
Fastening tape attached to the other side of the pad body and having an engaging portion on the surface;
A frontal target tape that is detachably disposed on the other surface side of the pad main body and that indicates the fastening position of the fastening tape and has a handle on the surface;
With
The back sheet is provided with an exterior sheet made of non-woven fabric, a hook material is provided on one side of the frontal target tape, and the hook material on one side of the frontal target tape is attached to and detached from the exterior sheet. The target tape is removable on the other side of the pad body,
A tape-type disposable diaper with a mark indicating the basic mounting position of the frontal target tape in the pad body. The frontal target tape includes a lower reinforcing material formed in an annular shape, a sheet base material that is formed in an annular shape and narrower than the lower reinforcing material, and is disposed along the inner peripheral side of the lower reinforcing material, and An upper reinforcement formed in a strip shape with the same width as the lower reinforcement attached to the upper side ;
A plurality of patterns are continuously drawn on the sheet base material along the length of the sheet base material ,
A pair of slits are provided on the upper surface side of the lower reinforcing material so as to extend in a direction orthogonal to the longitudinal direction of the lower reinforcing material,
A pair of slits are provided at the left and right ends on the lower surface side of the lower reinforcing material so as to extend in a direction orthogonal to the longitudinal direction of the lower reinforcing material,
The sheet base material is located on the outer peripheral side of the lower reinforcing material between the pair of slits on the upper surface side of the lower reinforcing material and between each pair of slits present on the left and right ends on the lower surface side of the lower reinforcing material,
The sheet base material is movable relative to the lower reinforcement,
In the central part corresponding to the space between the pair of slits in the upper reinforcing material, a rectangular window is provided, and the portion of the sheet base material existing between the pair of slits is visible from the window. ,
Among the plurality of patterns drawn on the sheet base material, the pattern located between the pair of slits on the upper surface side of the lower reinforcing material is displayed outside through the window portion of the upper reinforcing material and is configured to be visible. The tape-type disposable diaper according to claim 1.   The tape-type disposable diaper according to claim 1 or 2, wherein a hook material is provided on the entire surface of one side of the frontal target tape.

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