JP2008080025A - Paper diaper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the fitting property of an absorbing pad to a user's body. <P>SOLUTION: The paper diaper comprises an exterior body 20 formed to cover from the lower abdomen to the hips via the crotch region of the user; an opening part 30 communicating inward/outward disposed in a prescribed area in the front/rear directions along the center in the cross direction of the exterior body 20; the absorbing pad 50 to be attached to the inner surface or outer surface of the exterior body 20 to cover the whole opening part 30; a pad fixing tape 41 disposed on both sides in the cross direction on the outer surface of the exterior body 20 to be detachably jointed to a front side part 54 on the outer surface of the absorbing pad 50; and a pad fixing tape 42 to be detachably jointed to a rear side part 55 on the outer surface of the absorbing pad 50. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a disposable diaper.

As one form of the disposable diaper, an absorbent pad exchange type disposable diaper has been proposed in which an opening communicating with the inside and outside is provided at the crotch portion of a pant-type exterior body, and the absorbent pad is detachably attached so as to cover the opening. (For example, refer to Patent Documents 1 and 2). This absorbent pad exchange type disposable diaper is provided with a hook tape or an adhesive material layer of a mechanical fastener on the peripheral edge of the inner surface of the absorbent pad, and is joined to the outer surface of the exterior body using this.
Japanese Patent Laid-Open No. 2004-414 JP 2004-180950 A

However, the conventional absorbent pad exchange type disposable diaper has a problem that the fit of the absorbent pad to the body is poor.
Then, the main subject of this invention is improving the fitting property of the absorption pad with respect to a body.

The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
An exterior body formed so as to cover from the lower abdomen through the crotch to the buttocks,
An opening that is provided in a predetermined front-rear direction range along the center in the width direction of the exterior body, and that communicates with the inside and outside,
An absorbent pad attached to the inner surface or outer surface of the exterior body so as to cover the entire opening,
A pad fixing tape that is detachably joined to the front side portion of the absorbent pad, and a pad fixing tape that is detachably joined to the rear side portion of the absorbent pad, provided on both sides in the width direction on the outer surface of the exterior body; ,
A disposable diaper characterized by comprising

(Function and effect)
In the present invention, the pad fixing tape is bonded to the front side and the rear side of the outer surface of the absorbent pad by bonding the pad fixing tapes respectively provided on both sides in the width direction of the outer surface of the exterior body with the absorbent pad pressed against the body. Thus, the absorbent pad can be pressed from the outside. Thus, the fit of the absorbent pad to the body is significantly improved. Further, since the bonding position of the pad fixing tape with respect to the absorbent pad can be easily changed, the position of the absorbent pad can be easily and widely changed. Furthermore, in the case of this invention, there exists an advantage that it is also possible to attach an absorption pad to the inner surface of an exterior body. In this case, the pad fixing tape is bonded to the outer surface of the absorbent pad exposed at the opening of the exterior body.

<Invention of Claim 2>
The disposable diaper according to claim 1, wherein the pad fixing tape is configured to elastically expand and contract at least along a longitudinal direction thereof.

(Function and effect)
In this way, by giving the pad fixing tape elasticity, the absorbent pad can be elastically fitted to the body. Moreover, since the movement range of the pad fixing tape is significantly widened, the position of the absorbent pad can be changed in a wider range.

<Invention of Claim 3>
The paper diaper according to claim 1 or 2, wherein a plurality of the openings are provided at intervals in the front-rear direction, and the absorbent pad is attached to the inner surface of the exterior body.

(Function and effect)
In the absorbent pad replacement type disposable diaper, by increasing the absorption pad and opening, the absorption range and the amount of absorption by the absorption pad can be increased. It becomes easy to produce a gap.
This problem can be solved by providing a plurality of openings at intervals in the front-rear direction, but in that case, if an absorbent pad is attached to the outer surface of the exterior body as in the prior art, the portion that is not the opening is caused by excrement. In the invention described in this section, the absorbent pad is attached to the inner surface of the exterior body by utilizing the above-described features of the present invention.

<Invention of Claim 4>
The exterior body has a liquid-permeable surface sheet, a liquid-impermeable back sheet, and an absorbent body provided therebetween,
The opening penetrates the portion having the absorber,
The paper diaper according to any one of claims 1 to 3, wherein the absorbent pad includes a liquid-permeable top sheet, a liquid-impervious back sheet, and an absorbent body provided therebetween. .

(Function and effect)
In the conventional absorbent pad exchange type diaper described above, the exterior body does not include the absorbent body. This is because in the conventional type in which the inner surface of the absorbent pad and the outer surface of the exterior body are joined, if the rigidity of the exterior body is increased, it is difficult to join the absorbent pad that is also highly rigid. On the other hand, when the absorbent pad is fixed with the pad fixing tape as in the present invention, the absorbent pad can be easily joined even if the outer casing is provided with an absorbent body to increase rigidity as described in this section. Can do. Therefore, in adult care applications, there is a type that absorbs only with an absorbent pad when the amount of urination is small, and absorbs with both the exterior body and the absorption pad when the amount of urination is large. Suitable for use.

<Invention of Claim 5>
The exterior body is a pant-type exterior body in which a front body and a back body are joined at both sides to form a waistline opening and a pair of left and right leghole openings, and protruded from both sides to the front body. Fastening tape, a perforation formed from the waist opening to the leg opening on the center side in the width direction from the protruding position of the fastening tape, and a flon provided further on the center side in the width direction than the perforation. With a target tape,
Pad fixing tapes to be joined to the front portion of the outer surface of the absorbent pad are respectively provided on the outer sides in the width direction of the perforations at both sides of the front body, and the outer sides of the absorbent pad are disposed on both sides of the rear body. Pad fixing tape to be joined to the rear part is provided,
The disposable diaper according to any one of claims 1 to 4.

(Function and effect)
The exterior body described in this section is based on a pants-type exterior body, and should be referred to as a convertible type that can be used as a so-called tape type by being cut off at the perforation. The invention can be suitably applied. In particular, since the pad fixing tape is joined to the front side portion of the outer surface of the absorbent pad from both sides of the back side portion in a state separated by the perforation, the lifting effect of the front side portion is particularly excellent.

<Invention of Claim 6>
The exterior body is a pant-type exterior body in which the front body and the back body are joined at both sides, and a waistline opening and a pair of left and right leg opening are formed,
Pad fixing tapes that are bonded to the front part of the outer surface of the absorbent pad are provided on both sides of the front body, and pad fixings that are bonded to the rear part of the outer surface of the absorbent pad are provided on both sides of the rear body. Each tape is provided,
The disposable diaper according to any one of claims 1 to 4.

(Function and effect)
By configuring as described in this section, the present invention can be applied to a widely used pant-type exterior body.

<Invention of Claim 7>
The exterior body is configured to be attached to the body by fastening fastening tapes respectively protruding from both sides in the width direction of the rear part to a front target tape provided in the front part,
A pad fixing tape to be bonded to at least a front portion of the outer surface of the absorbent pad and a pad fixing tape to be bonded to a rear portion of the outer surface of the absorbent pad are provided on both sides in the width direction on both sides of the rear portion, respectively.
The disposable diaper according to any one of claims 1 to 4.

(Function and effect)
The exterior body described in this section is a so-called tape-type exterior body, and the present invention can be suitably applied by configuring as described in this section. In particular, since the pad fixing tape is joined to the front side portion of the outer surface of the absorbent pad from both sides of the rear portion, the lifting effect of the front side portion is particularly excellent.

  As described above, according to the present invention, there are advantages such as improved fit of the absorbent pad to the body.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
<About absorption pad>
FIG. 1 shows an embodiment of an absorbent pad 50. In this absorbent pad, an absorbent body 53 is interposed between the liquid-permeable surface sheet 51 and the liquid-impervious back sheet 52, and the peripheral part of the liquid-permeable surface sheet 51 and the peripheral part of the liquid-impervious back sheet 52. Are joined around the absorber 53 by a hot melt adhesive or the like.

  As the liquid-permeable surface sheet 51 that covers the surface side (skin contact surface side) of the absorbent body 53, a porous or non-porous nonwoven fabric or a porous plastic sheet is preferably used. The material fibers that make up the nonwoven fabric can be synthetic fibers such as olefins such as polyethylene or polypropylene, polyesters, and polyamides, recycled fibers such as rayon and cupra, and natural fibers such as cotton. A nonwoven fabric obtained by an appropriate processing method such as a spun bond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Among these processing methods, the spunlace method is excellent in terms of flexibility and drapeability, and the thermal bond method is excellent in terms of being bulky and soft. When a large number of through holes are formed in the liquid-permeable surface sheet 51, urine and the like are quickly absorbed, and the dry touch property is excellent. The liquid-permeable surface sheet 51 is wound around the side edge of the absorbent body 53 and extends to the back surface side of the absorbent body 53.

  As the liquid-impervious back sheet 52 that covers the back surface side (non-skin contact surface side) of the absorbent body 53, a liquid-impervious plastic sheet such as polyethylene or polypropylene is used. Those having the following are preferably used. This water-impervious / breathable sheet is a microporous sheet obtained by, for example, melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. If the sheet thickness is the same, the rigidity is lower than that of the non-porous sheet, which is superior in terms of flexibility. In order to improve the touch, it is also possible to apply a non-woven fabric to the outer surface of the liquid-impermeable back sheet 52 to cover it.

  As the absorber 53, one formed by molding a fluffy pulp and a water-absorbing polymer is suitably used. The water-absorbing polymer can be mixed in the pulp constituting the absorber, for example, as a granular powder. Pulp includes cellulose fibers such as chemical pulp and dissolved pulp obtained from wood, and artificial cellulose fibers such as rayon and acetate. It can use suitably in terms of. Of course, other known absorbers can also be used. Further, the absorbent body 53 can be wrapped with a liquid-permeable sheet such as crepe paper as necessary, for the purpose of maintaining the shape and improving the diffusibility of the body fluid that has passed through the liquid-permeable surface sheet 51. The shape of the absorber 53 can be a rectangular shape as shown in the drawing, or a shape in which the width of the crotch portion is narrower than the dorsal side and the abdominal side, or can be appropriately determined.

  Target tapes 54 and 55 are provided on the outer surface of the absorbent pad 50 as necessary. Examples of the target tapes 54 and 55 include a tape having a surface on which hook-shaped protrusions are detachably hooked, for example, a loop-like thread projecting from the surface of a base sheet (a female material of a mechanical fastener), a nonwoven fabric, and the like. In addition, a tape having a smooth surface with excellent adhesion can be used. As described above, when the entire outer surface of the absorbent pad is covered with a non-woven fabric and a hook tape is provided on the pad fixing tape described later, the target tapes 54 and 55 can be omitted.

  The shape and dimensions of the absorbent pad 50 can be appropriately determined within a range that can cover the opening of the exterior body described later. For example, the length Lp is 1.1 to 6 times that of the exterior body opening, and the width Wp is 1. The rectangular shape can be 1 to 15 times.

  The shape, dimensions, and arrangement of the target tapes 54 and 55 provided on the outer surface can be determined as appropriate. For example, the length in the front-rear direction is about 15 to 40% of the absorbent pad, and the width is about 20 to 100% of the absorbent pad. The rectangular tape is preferably provided on each of the front end portion 54 and the rear end portion 55 of the outer surface of the absorbent pad 50. Of course, almost the entire outer surface of the absorbent pad 50 can be covered with the target tape.

<Convertible type exterior>
2 to 6 show an embodiment of the convertible type outer package 20. The exterior body 20 is formed of a sheet in which a front body and a back body are continuous at a crotch portion. This sheet is a non-woven sheet having a two-layer structure composed of an upper layer nonwoven fabric 20A and a lower layer nonwoven fabric 20B, and various elastic members are disposed between the upper layer nonwoven fabric 20A and the lower layer nonwoven fabric 20B to impart elasticity. The planar shape has a pseudo hourglass shape as a whole by the concave leg periphery cut lines 29 formed to form the leg openings on the both sides of the middle. By joining the front body and the back body of such a sheet at both sides, a pants-shaped exterior body 20 having a waist opening and a pair of left and right leg openings is obtained.

  Further, in the exterior body 20 of the illustrated embodiment, as elastic members, the waist elastic members 24, 24... Arranged around the waist opening 23 and the front body F and the back body B are spaced apart in the vertical direction. A plurality of waist elastic member groups 25, 25,... Arranged along the horizontal direction.

  The waist elastic members 24, 24... Are arranged in the vicinity of the waist opening edge in the range of the side joint edges 21, 22 where the front body F and the back body B are joined, with an interval in the vertical direction. A plurality of thread rubber-like elastic members for attaching an absorbent article to the body by applying an elastic force so as to tighten around the waist of the body. As the waist elastic member 24, thread rubber is used in the illustrated example, but a tape-like elastic member may be used, for example. As the material, styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicon, polyester, and the like can be used.

  The waist elastic member groups 25, 25... Are elastic rubber members arranged in the horizontal direction at intervals in the vertical direction over the range from the upper part to the lower part of the side joint edges 21, 22. This is an elastic member for applying a horizontal expansion and contraction force to the waist portions of the front body F and the back body B, respectively, to adhere the absorbent article to the body. The boundaries between the waist elastic members 24, 24 ... and the waist elastic members 25, 25 ... are not necessarily clear. For example, among the elastic members arranged in the horizontal direction with an interval in the vertical direction on the front body F and the back body B, even if the number cannot be specified, some on the upper side function as waist elastic members. The remaining elastic members only have to function as waist elastic members.

  Further, in the convertible type exterior body 20, the front body F has a fastening tape 26 that protrudes from the both sides to the center in the width direction, and a waist opening at the center in the width direction from the protruding position of the fastening tape 26. It has a perforation 27 formed along the height direction so as to reach the leg opening, and a front target tape 28 provided further on the center side in the width direction than the perforation 27. By separating the perforation 27, the center side in the width direction of the perforation 27 of the front body F becomes the ventral side, the outer side in the width direction of the perforation 27 and the back body B connecting them become the back side, By fastening the fastening tape 26 to the front target tape 28 on the outer surface of the ventral side, it can be changed to a so-called tape-type disposable diaper that is worn on the body.

  As the fastening tape 26, the base end portion of the base material sheet 26b made of a nonwoven fabric or the like is fixed to the outer surface of the front body F with a hot melt adhesive or the like, and the inner surface of the tip side portion has a mushroom shape, a J shape, or the like. In addition to the one provided with the hook tape 26f having a large number of hook-shaped protrusions, one provided with an adhesive layer instead of the hook tape 26f can be used. Further, as the front target tape 28, a tape having a surface on which hook-like projections are detachably hooked, for example, a loop-like thread protruding from the surface of a base material sheet (a female material of a mechanical fastener), a nonwoven fabric, or the like In addition, a tape having a smooth and excellent surface can be used.

  In particular, in the exterior body 20, the absorbent main body 10 in which the absorbent body 13 is interposed between the liquid-permeable surface sheet 11 and the liquid-impermeable back sheet 12 from the front side to the rear side of the crotch portion on the inner surface is hot. It is fixed with a melt adhesive or the like. The absorptive main body 10 can also be omitted.

  The material used and the structure of the absorbent main body 10 can be basically the same as those of the absorbent pad 50. In particular, in the illustrated absorbent main body 10, solid gather BSs that fit around the legs are formed on both sides of the inner surface. The three-dimensional gathered BS is formed by the gathered sheet 15, and as the gathered sheet, as shown in FIG. 6, a non-woven fabric made into a double sheet by folding is preferably used and is wound by the liquid-permeable surface sheet 11. The side edge portion of the absorbent body 13 is further rolled up from the upper side thereof and extends to the back surface side of the absorbent body 13 to be bonded. More specifically, the gather sheet 15 leaves a three-dimensional gather BS forming portion in the middle portion in the longitudinal direction of the absorbent article 1, and the range from the middle portion in the width direction to the back side of the absorbent body 13 is a hot melt adhesive or the like. In the longitudinal front and rear end portions, the section from the intermediate portion in the width direction to the one side end edge is bonded in the range extending to the back side of the absorber 13, and the portion forming the three-dimensional gather BS is absorbed by the absorber. While being folded at the upper surface portion of 13, it is bonded by a hot melt adhesive or the like.

  In the gather sheet 15 formed of a double sheet nonwoven fabric, a plurality of thread-like elastic elastic members 16, 16,... The thread-like elastic elastic members 16, 16... Are for forming a three-dimensional gather BS by raising the nonwoven fabric portion protruding from the absorber side edge by elastic elastic force as shown by a two-dot chain line in FIG. It is.

  The liquid-impermeable back sheet 12 enters the double sheet-like gather sheet 15 and constitutes a leak-proof wall on the lower end side of the three-dimensional gather BS as shown in FIG. As the liquid-impermeable back sheet 12, it is desirable to use an opaque one so that brown color such as defecation and urine does not appear. As the opacification, a plastic film and a pigment and a filler such as calcium carbonate, titanium oxide, zinc oxide, white carbon, clay, talc, and barium sulfate are preferably used.

  As the thread-like elastic elastic member 16, materials such as styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicon, polyester, and the like that are usually used can be used. In order to make it difficult to see from the outside, it is preferable that the thickness is 925 dtex or less, the tension is 150 to 350%, and the interval is 7.0 mm or less. Instead of the thread-like elastic elastic member, a tape-like elastic elastic member having a certain width may be used.

  As with the liquid-permeable surface sheet 11, the material fibers constituting the gather sheet 15 are olefin-based, polyester-based, amide-based synthetic fibers such as polyethylene or polypropylene, regenerated fibers such as rayon and cupra, and cotton. Non-woven fabric obtained by an appropriate processing method such as a spunbond method, a thermal bond method, a melt blown method, a needle punch method, etc. can be used. It is preferable to use a nonwoven fabric that suppresses the basis weight and has excellent air permeability. Furthermore, for the gather sheet 15, in order to prevent the transmission of urine and the like, to prevent fogging, and to improve the touch to the skin (dry feeling), silicon-based, paraffin metal-based, alkylchromic chromoid-based water repellent, etc. It is desirable to use a water-repellent non-woven fabric coated with.

  Characteristically, the opening 30 having a predetermined width is formed so as to communicate with the inside and outside of the exterior body 20 over a predetermined range in the front-rear direction along the center in the width direction. The shape and arrangement of the opening 30 can be determined as appropriate. For example, as shown in FIG. 2, the opening 30 has a rectangular shape that extends to the same extent before and after the crotch part, or a range from the crotch part to the front side or the rear side (not shown). Or a rectangular shape extending only on the surface. Although the dimension of the opening 30 can be determined as appropriate, the length Lt in the front-rear direction can be about 15 to 95% of the front-rear length Lo of the exterior body 20, and the width Wt is the crotch width Wc of the exterior body 20. Of about 10 to 95%.

  Further, as shown in FIG. 8, a plurality of openings 30 can be provided at intervals in the front-rear direction. In this case, the length of each opening 30 in the front-rear direction can be about 2 to 70% of the front-rear length Lo of the exterior body 20, and the distance Dt between the openings 30 and 30 is the front-rear length of the exterior body 20. It can be about 2 to 80% of the length Lo.

  In particular, in the case of the illustrated form, the opening 30 penetrates the portion having the absorber 13 of the exterior body 20, and the liquid-permeable surface sheet 11 and the liquid-impermeable are formed at the edge of the opening 30 in the absorbent body 10. The back sheet 12 is directly joined by a hot melt adhesive or the like, and the edge of the absorber 13 is located inside the joined part. In the drawing, a joint portion by a hot melt adhesive or the like is indicated by a cross.

  Characteristically, the pad fixing tape 41 is provided on the outer side in the width direction from the perforations 27 on both sides of the front body F so as to protrude to the center side in the width direction, and also on both sides of the rear body. Pad fixing tapes 42 are provided so as to protrude to the center in the width direction.

  As the pad fixing tapes 41 and 42, those having the same configuration as that of the fastening tape 26 can be basically used, and the pad fixing tapes 41 and 42 can be attached by attaching only the base end portion to the outer surface of the exterior body 20. In particular, the pad fixing tapes 41 and 42 are preferably configured to elastically expand and contract at least along the longitudinal direction. For this reason, as a part or all of the base sheet 41b or 42b, a rubber sheet, The thing which stuck the nonwoven fabric sheet on both surfaces of the rubber sheet, the thing which fixed elongated elastic elastic members, such as rubber thread, in the extended state along the longitudinal direction between nonwoven fabrics, etc. can be used.

  The dimensions and arrangement of the pad fixing tapes 41 and 42 can be appropriately determined in consideration of the bonding range with respect to the absorbent pad 50. In normal cases, the length Wf of the pad fixing tapes 41 and 42 is the width of the exterior body 20. It is preferable to be about 20 to 50% of Wo, and it is preferable to be provided on both sides in the width direction of the front and rear ends of the opening 30.

  The absorbent pad exchange-type disposable diaper thus configured can be used, for example, as follows. That is, when the absorbent pad 50 is pressed against the outer surface of the exterior body 20 and used as a pant-type, the pad fixing on both sides of the front body F of the exterior body 20 is performed without cutting the perforation 27 as shown in FIG. The tapes 41 and 41 are respectively joined to the target tape 54 on the front portion of the outer surface of the absorbent pad 50, and the pad fixing tapes 42 and 42 on both sides of the rear body B are joined to the target tape 55 on the rear portion of the outer surface of the absorbent pad 50, respectively. Thus, the absorbent pad 50 can be attached. In FIG. 7, the elastic elastic members 24 and 25 are omitted for easy viewing.

  On the other hand, in the state where the perforation 27 is cut off, the pad fixing tapes 41 and 41 and the fastening tape 26 at both ends of the front body F protrude from both sides on the back side. Therefore, the fastening tape 26 is brought into the ventral side and joined to the front target tape 28, and the pad fixing tapes 41 and 41 are also brought into the ventral side so as to be joined to the target tape 54 on the front portion of the outer surface of the absorbent pad 50, respectively. . The pad fixing tapes 42, 42 on the back body are used in the same manner regardless of the perforation.

  When joining the pad fixing tapes 41 and 42, rather than joining the pad fixing tapes 41 and 42 in a posture along the width direction, the posture is directed obliquely upward from the absorption pad 50 side on both sides in the width direction, particularly along the collar portion. Is preferable because the absorbent pad 50 can be lifted and fitted to the body. Further, the pad 50 can be fixed by the pad fixing tapes 41 and 42 in a state where the position of the absorbent pad 50 is shifted in the front-rear direction or the width direction. Further, the absorbent pad 50 can be attached to the inner surface of the exterior body 20. In this case, 41 and 42 pad fixing tapes are joined to the outer surface of the absorbent pad 50 exposed at the opening 30 of the exterior body 20. This form is a particularly preferred form because the gap 30 can be covered with the absorbent pad 50 when the openings 30 are provided with a gap in the front-rear direction. Further, when the openings 30 are provided at intervals in the front-rear direction, the front end portion and the rear end portion of the absorbent pad 50 are connected to the inner surface of the exterior body 20 from the outside of the exterior body 20 through the front and rear openings 30, 30. It is also possible to adopt a mounting form in which the pad fixing tapes 41 and 42 are joined to the portions of the outer surface of the absorbent pad 50 that are exposed to the outside of the exterior body 20 in this state. In the present invention, since the absorbent pad 50 is fixed with the tapes 41 and 42, such free mounting forms are possible.

<About pants-type exterior>
9-11 has shown embodiment of the underpants type exterior body 200. FIG. The exterior body 200 is the same as the convertible type described above except that the fastening tape 26, the perforation 27, and the front target tape 28 are omitted in the front body F of the exterior body 200 and cannot be changed to a tape type. Therefore, the description is abbreviate | omitted using the same code | symbol. In FIG. 11, the elastic elastic members 24 and 25 are omitted for easy viewing.

<About tape-type exterior>
FIGS. 12-14 has shown embodiment of the tape-type exterior body 100, The fastening tape 105 each protruded from the width direction both sides of the rear part (back side) BP is used for the front part (abdominal side) FP. It is configured to be worn on the body by being fastened to the provided front target tape 106.

  In particular, the illustrated exterior body 100 has an absorbent body 103 interposed between a liquid-impermeable back sheet 101 and a liquid-permeable top sheet 102. The absorber 103 can be omitted. As the liquid-impermeable back sheet 101, the liquid-permeable top sheet 102, and the absorber 103, the same material as that of the convertible type can be used. The outer surface of the liquid-impermeable back sheet 101 can be covered with a nonwoven fabric.

  The liquid-impermeable back sheet 101 extends outward from the periphery of the absorber 103 and has a substantially hourglass shape. On the inner surface of the laterally extending portion of the liquid-impervious backsheet 101, a portion 104x on the outer side in the width direction of the barrier sheet 104 is attached over the entire front-rear direction to form a side flap portion SF where the absorber 103 does not exist. Yes. A portion 104c on the center side in the width direction of the barrier sheet 104 extends to the top sheet 102, and a thread-like elastic elastic member 104G is hot in a stretched state along the front-rear direction at the end on the center side in the width direction. It is fixed with a melt adhesive or the like. As this thread-like elastic elastic member 104G, materials such as styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicon, polyester, and the like that are usually used can be used.

  More specifically, both the barrier sheets 104 are adhered and fixed to the inner surface of the article (in the illustrated form, the top sheet 102 surface and the back sheet 101 inner surface) over the entire front and rear direction in the width direction outer portion 104x, and at the center in the width direction. In the portion 104c, both ends in the front-rear direction are bonded and fixed to the inner surface of the article (the surface of the top sheet 102 in the illustrated embodiment), and not fixed to the inner surface of the article (the surface of the top sheet 102 in the illustrated embodiment) between both ends in the front-rear direction. . As shown in FIGS. 13 and 14, this non-fixed portion is a portion that becomes a barrier portion that can stand up with respect to the inner surface of the article (the surface of the top sheet 2 in the illustrated embodiment). The sheet 104 is located at the boundary between the outer fixed portion 104x and the inner portion 104c.

  The liquid-permeable top sheet 102 has an hourglass shape that is slightly larger than the absorber 103, and a portion that extends slightly outward from the side edge of the absorber 3 is between the barrier sheet 104 and the liquid-impermeable back sheet 101. It is interposed and fixed to the liquid-impermeable back sheet 101 side by a hot melt adhesive or the like. This fixed portion is shown as a dot pattern in FIGS. As the material for the barrier sheet 104, a plastic sheet or a melt-blown nonwoven fabric can be used. However, in terms of touch to the skin, a nonwoven fabric that is water-repellent treated with silicon or the like is preferably used.

  When the outer surface of the liquid-impermeable back sheet 101 is covered with a nonwoven fabric, instead of the liquid-impermeable back sheet 101, the exterior nonwoven fabric is extended outward from the periphery of the absorbent body 103 and the side portion of the barrier sheet 104. At the same time, the side flap portion SF in which the absorber 103 does not exist can be configured. In this case, the liquid-impermeable back sheet 101 can be formed in the same shape as the top sheet 102 without extending to the side flap portion SF.

  At both ends in the front-rear direction of the paper diaper, the liquid-impervious backsheet 101 and the liquid-permeable topsheet 102 are respectively extended from the front and rear ends of the absorbent body 103 to the front and rear sides, and end flap portions EF without the absorbent body 3 are formed. Among them, in the end flap portion EF of the rear portion BP, a plurality of yarn elastic elastic members 107, 107... In the illustrated example are arranged along the width direction.

  Fastening tapes 105 and 105 are attached to both end portions of the end flap portion EF of the rear portion BP so as to protrude sideways, and a front target tape 106 is attached to the surface of the front portion FP along the width direction. The exterior body 100 is attached to the body by fastening the fastening tape 105 to the front target tape 106. The fastening tape 105 and the front target tape 106 can be basically the same as the convertible type.

  Characteristically, the opening 30 having a predetermined width is formed so as to communicate with the inside and outside of the exterior body 100 over a predetermined range in the front-rear direction along the center in the width direction. The shape, arrangement, dimensions, number, and the like of the opening 30 can be the same as those of the convertible type. Moreover, the point that the opening part 30 has penetrated the part which has the absorber 103 is also the same.

  In addition, characteristically, the pad fixing tape 41 is attached to both sides of the rear portion B in the width direction so as to be adjacent to the crotch side of the fastening tape 105 so as to protrude laterally like the fastening tape 105. Further, pad fixing tapes 42 are provided on both sides of the rear end portion of the opening 30 on the crotch side so as to protrude toward the center in the width direction.

  As the pad fixing tapes 41 and 42, basically the same type as that of the convertible type can be used, and only the base end portion is attached to the outer surface of the exterior body 100 or only the base end portion is attached to the exterior body 100 side. It can be attached by sandwiching and fixing between the sheets at the edge. The dimensions and arrangement of the pad fixing tapes 41 and 42 can be appropriately determined in consideration of the bonding range with respect to the absorbent pad 50. In normal cases, the length Wf of the pad fixing tapes 41 and 42 is the width of the exterior body 100. It is preferable to be about 3 to 50% of Wo.

  In the absorbent pad 50 exchangeable paper diaper thus configured, for example, it can be used as follows. That is, the absorbent pad 50 is pressed against the outer surface of the exterior body 100, and as shown in FIG. 15, the fastening tape 105 and the pad fixing tape 41 protruding from both sides of the rear portion BP are brought into the front portion FP, respectively, and the front target tape 106 and the pad fixing tape 42 that protrudes from both sides of the opening 30 of the rear portion BP are bonded to the target tape 55 on the rear surface of the absorption pad 50. Join each one. The direction of the pad fixing tapes 41 and 42, the change of the position of the absorbent pad 50, and the attachment of the absorbent pad 50 to the inner surface of the exterior body 100 are basically the same as in the convertible type. In FIG. 15, the elastic elastic members 24 and 25 are omitted for easy viewing.

  The present invention can be applied to an absorbent pad replaceable paper diaper.

It is a top view which shows the outer surface side of an absorption pad. It is a top view in the unfolded state which shows the inner surface of a convertible type exterior body. It is a top view in the unfolded state which shows the outer surface of a convertible type exterior body. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. 2 is a plan view of the absorbent main body 10. FIG. It is the (a) front view and the (b) back view which show the attachment point of an absorption pad. It is a top view of the unfolding state which shows the inner surface of the exterior body which has an opening part of another form. It is a top view in the unfolded state which shows the inner surface of a pants-type exterior body. It is a top view in the unfolded state which shows the outer surface of a pants-type exterior body. It is the (a) front view and the (b) back view which show the attachment point of an absorption pad. It is a top view in the unfolding state which shows the inner surface of a tape-type exterior body. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is the (a) front view and the (b) back view which show the attachment point of an absorption pad.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Absorbent main body, 11 ... Liquid-permeable surface sheet, 12 ... Liquid-impermeable back sheet, 13 ... Absorber, 15 ... Gather sheet, 16 ... String-like elastic elastic member, 20, 200, 100 ... Exterior body, 21 22 ... side joint edge, 24 ... waist elastic member, 25 ... waist elastic member, 26 ... fastening tape, 27 ... perforation, 28 ... front target tape, 29 ... leg circumference cut line, 30 ... opening, 41, 42 ... pad fixing tape, 50 ... absorbent pad, F ... front body, B ... back body.

Claims (7)

An exterior body formed so as to cover from the lower abdomen through the crotch to the buttocks,
An opening that is provided in a predetermined front-rear direction range along the center in the width direction of the exterior body, and that communicates with the inside and outside,
An absorbent pad attached to the inner surface or outer surface of the exterior body so as to cover the entire opening,
A pad fixing tape that is detachably bonded to the front side portion of the outer surface of the absorbent pad and a pad fixing that is detachably bonded to the rear side portion of the outer surface of the absorbent pad. With tape,
A disposable diaper characterized by comprising   The disposable diaper according to claim 1, wherein the pad fixing tape is configured to elastically expand and contract at least along a longitudinal direction thereof.   The paper diaper according to claim 1 or 2, wherein a plurality of the openings are provided at intervals in the front-rear direction, and the absorbent pad is attached to the inner surface of the exterior body.   The exterior body includes a liquid-permeable top sheet, a liquid-impervious back sheet, and an absorber provided therebetween, and the opening penetrates a portion having the absorber. The paper diaper according to any one of claims 1 to 3. The exterior body is a pant-type exterior body in which a front body and a back body are joined at both sides to form a waistline opening and a pair of left and right leghole openings, and protruded from both sides to the front body. Fastening tape, a perforation formed from the waist opening to the leg opening on the center side in the width direction from the protruding position of the fastening tape, and a freon provided on the center side in the width direction further than the perforation. With a target tape,
Pad fixing tapes to be joined to the front portion of the outer surface of the absorbent pad are respectively provided on the outer sides in the width direction of the perforations at both sides of the front body, and the outer sides of the absorbent pad are disposed on both sides of the rear body. Pad fixing tape to be joined to the rear part is provided,
The disposable diaper according to any one of claims 1 to 4. The exterior body is a pant-type exterior body in which the front body and the back body are joined at both sides, and a waistline opening and a pair of left and right leg opening are formed,
Pad fixing tapes that are bonded to the front part of the outer surface of the absorbent pad are provided on both sides of the front body, and pad fixings that are bonded to the rear part of the outer surface of the absorbent pad are provided on both sides of the rear body. Each tape is provided,
The disposable diaper according to any one of claims 1 to 4. The exterior body is configured to be attached to the body by fastening fastening tapes respectively protruding from both sides in the width direction of the rear part to a front target tape provided in the front part,
A pad fixing tape to be bonded to at least a front portion of the outer surface of the absorbent pad and a pad fixing tape to be bonded to a rear portion of the outer surface of the absorbent pad are provided on both sides in the width direction on both sides of the rear portion, respectively.
The disposable diaper according to any one of claims 1 to 4.

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