JP2016189822A - Disposable diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disposable diaper allowing the visually impaired to easily clothe a wearer and including locking object parts that project from an outer surface of an outer wrapper sheet toward the outside, and a manufacturing method thereof.SOLUTION: The disposable diaper includes: fastening tapes having locking parts at inner surfaces, on both sides of a back side of an outer wrapper sheet; and a plurality of locking object parts to be locked with the locking parts, formed at portions overlapped with an absorber in a ventral part of the outer wrapper sheet. Each locking object sheet is so formed as to project from the outer surface of the outer wrapper sheet toward the outside.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a disposable diaper in which a locked portion protruding outward from the outer surface of an exterior sheet is formed on a portion of the exterior sheet positioned on the abdomen side of the wearer that locks the locking portion of the fastening tape, and It relates to the manufacturing method.

Conventionally, a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber that absorbs excrement provided between the top sheet and the back sheet are provided on the inner surface that is the body side part of the exterior sheet, Disposable diapers are known in which a fastening portion of a fastening tape provided on both side portions on the back side of an exterior sheet is engaged with a locked portion on the abdomen side of the exterior sheet, and is attached to a wearer.
In order to easily attach these disposable diapers to a wearer, a technique is disclosed in which a locked sheet having a locking position printed on the belly side of the exterior sheet is provided. (Patent Document 1)
Also, in order to increase the locking force between the locking portion of the fastening tape and the locking sheet provided on the ventral side of the exterior sheet, a cushioning material formed of urethane foam or the like is provided between the exterior sheet and the locked sheet. Technology is disclosed. (Patent Document 2)

JP 2003-153952 A Japanese Patent Laid-Open No. 9-154883

Since the to-be-latched sheet | seat in which the latching position disclosed by patent document 1 was printed does not have tactile-feeling performance, especially the visually handicapped person cannot reduce the difficulty of mounting | wearing a wearer with a disposable diaper. In addition, since the cushioning material disclosed in Patent Document 2 is provided on the entire lower surface of the locked sheet, it is possible to reduce the difficulty of a visually impaired person wearing a disposable diaper on the wearer. In addition, it is necessary to manufacture a buffer material separately, which may increase the manufacturing cost.
Then, the main subject of this invention is the exterior sheet located in the abdomen side of the wearer by which the latching | locking part of the fastening tape which can mount | wear a wearer with a disposable diaper easily by a visually handicapped person and a night person is latched It is in providing the disposable diaper by which the to-be-latched part which protrudes toward the exterior from the outer surface of an exterior sheet | seat was formed in this site | part, and its manufacturing method.

The present invention that has solved the above problems is as follows.
The invention according to claim 1 is sandwiched between a liquid-permeable top sheet provided on the body side, a liquid-impermeable back sheet provided on the non-body side, and the top sheet and the back sheet. In a disposable diaper comprising an absorbent body that absorbs excrement and an exterior sheet provided on the opposite side of the back sheet,
A fastening tape having a locking portion on the inner surface is provided on both side portions of the back side portion of the exterior sheet, and a plurality of engaged members that are locked to the locking portion at portions overlapping the absorber in the abdominal side portion of the exterior sheet. The disposable diaper is characterized in that a stopper is formed and the locked portion is formed to protrude outward from the outer surface of the exterior sheet.

  The invention according to claim 2 is the disposable diaper according to claim 1, wherein the plurality of locked portions are formed at positions symmetrical with respect to the center in the width direction of the disposable diaper.

  The invention according to claim 3 is the disposable diaper according to claim 2, wherein the same mark is printed on the locked portion formed at the symmetrical position.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the density of the plurality of locked portions is set to be lower than the density of the absorber in which the plurality of locked portions are not provided. The disposable diaper according to item 1.

  The invention which concerns on Claim 5 is a disposable diaper of any one of Claims 1-4 which set the level | step difference of the protrusion part of these some to-be-latched part to 0.8-8.0 mm.

The invention according to claim 6 is sandwiched between a liquid-permeable top sheet provided on the body side, a liquid-impermeable back sheet provided on the non-body side, and the top sheet and the back sheet. In a manufacturing method of a disposable diaper provided with an absorber that absorbs excrement and an exterior sheet provided on the opposite side of the back sheet,
The absorbent body having a uniform thickness in a side view is fixed to the inner surface of the top sheet, and the thickness of the part of the absorbent body located on the abdomen side of the wearer is positioned on the back side of the wearer. Forming larger than the thickness of the absorbent body part, fixing the back sheet to the outer surface of the absorbent body, fixing the exterior sheet to the outer surface of the back sheet, the part of the absorbent body located on the stomach side of the wearer It is a manufacturing method of the disposable diaper which forms a division line from the exterior of the located exterior sheet, and forms a to-be-latched part.

  According to the first aspect of the present invention, the fastening tape having the locking portion on the inner surface is provided on both sides of the back side portion of the exterior sheet, and the locking portion is disposed on the portion overlapping the absorbent body on the ventral side portion of the exterior sheet. A plurality of locked portions to be locked are formed, and the locked portion is formed to protrude outward from the outer surface of the exterior sheet, so that the locked portion protrudes outward from the outer surface of the exterior sheet. Relying on the tactile sensation, the disposable diaper can be easily put on the wearer even if it is visually impaired. Moreover, even if it is a healthy person, a disposable diaper can be easily attached to the wearer at night.

  According to the invention of claim 2, in addition to the effect of the invention of claim 1, the plurality of locked portions are formed at positions symmetrical to the center in the width direction of the disposable diaper, The locking portion of the fastening tape can be locked to the locked portion formed at a position symmetrical with respect to the center in the width direction.

  According to the invention of claim 3, in addition to the effect of the invention of claim 2, since the same mark is printed on the locked portion formed at the symmetrical position, the same mark is relied on. Even a visually handicapped person can easily wear a disposable diaper by the wearer, and even a healthy person can easily wear a disposable diaper by the wearer at night.

  According to invention of Claim 4, in addition to the effect by the invention of any one of Claims 1-3, the density of several to-be-latched parts is provided with several to-be-latched parts. Since the density is set lower than the density of the non-absorbing body, the locking strength of the locking portion and the locked portion of the fastening tape can be increased.

  According to invention of Claim 5, in addition to the effect by the invention of any one of Claims 1-4, the level | step difference of the protrusion part of several to-be-latched part is 0.8-8.0 mm. Since it is set, the tactile performance can be further enhanced.

  According to the invention of claim 6, the absorbent body having a uniform thickness in a side view is fixed to the inner surface of the top sheet, and the thickness of the part of the absorbent body located on the abdomen side of the wearer is determined by the wearer. The absorbent body is formed larger than the thickness of the part of the absorbent body located on the back side of the body, the back sheet is fixed to the outer surface of the absorbent body, the exterior sheet is fixed to the outer surface of the back sheet, and the absorbent body is located on the stomach side of the wearer Since a plurality of locked portions are formed by forming a partition line from the outside of the exterior sheet located at the part of the exterior sheet, it is possible to form a locked portion that protrudes from the outer surface of the exterior sheet to the outside. A disposable diaper can be manufactured at a low cost without providing a cover.

It is the inner surface top view which expand | deployed the tape type disposable diaper. It is the outer surface top view which developed the tape type disposable diaper. It is X1-X1 sectional drawing of FIG. It is the outer surface top view which expanded the principal part of the to-be-latched part formed in the exterior sheet. It is X1-X1 sectional drawing of FIG. It is explanatory drawing explaining the manufacturing method of a to-be-latched part.

<Tape-type disposable diapers>
In order to facilitate understanding of the locked portion 13 formed by providing a predetermined step A from the abdominal side portion of the exterior sheet 12 of the present invention toward the outside, first, an attached drawing of the tape-type disposable diaper 100 is shown. Please refer to the detailed explanation. In this specification, the “front-rear direction” refers to the direction connecting the abdomen and the back side, “width direction” refers to the direction orthogonal to the front-rear direction, and “up-down direction” refers to a tape-type disposable. The direction orthogonal to the waistline direction in the wearing state of the diaper 100 shall be said.

  As shown in FIGS. 1 to 3, the tape-type disposable diaper 100 includes a liquid-permeable top sheet 10 provided on the side of the body, a liquid-impermeable back sheet 11 provided on the side opposite to the body, and a top sheet. 10 and an absorbent element 20 sandwiched between the back sheet 11. In addition, an exterior sheet 12 formed of a nonwoven fabric or the like is provided on the outer surface, which is the non-body side surface of the back sheet 11. In addition, it is preferable to provide an intermediate sheet 15 between the top sheet 10 and the absorbent element 20 to quickly move excrement transmitted through the top sheet 10 to the absorbent element 20 and prevent the excrement from returning.

  On the left and right sides of the absorbent element 20 in the width direction, there are respectively provided three-dimensional gathers 30 formed of a nonwoven fabric or the like that prevents leakage of excrement to the outside with a predetermined interval. On the left and right sides in the width direction, planar gathers 40 are provided that prevent leakage of excrement to the outside with a predetermined interval.

  End flap portions EF to which the absorbent element 20 is not extended are formed on the front and rear sides of the absorbent element 20 in the front-rear direction, and similarly, the absorbent element 20 extends on the left and right sides of the absorbent element 20 in the width direction. Side flap portions SF that are not present are respectively formed.

  Fastening tapes 50 that are used when the tape-type disposable diaper 100 is worn at the time of wearing are provided at the rear part in the front-rear direction of the side flap part SF. In the present embodiment, when the tape-type disposable diaper 100 is worn at the time of wearing, the locking portion 52 provided on the inner surface of the fastening tape 50 is locked to the locking sheet formed on the back side portion of the exterior sheet 12. Locked to the portion 13.

Next, the material and characteristic parts of the top sheet 10 and the like will be described in order.
(Top sheet)
The top sheet 10 can be formed of a perforated or non-porous nonwoven fabric, a porous plastic sheet, or the like. Moreover, what a raw material fiber is for the nonwoven fabric is not specifically limited. For example, olefins such as polyethylene and polypropylene, synthetic fibers such as polyesters and polyamides, recycled fibers such as rayon and cupra, natural fibers such as cotton, etc., mixed fibers and composite fibers using two or more of these 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.

(Back sheet)
The back sheet 11 is 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 the like, or a nonwoven fabric that is substantially liquid-impervious through a waterproof film (in this case, a waterproof film). And a non-woven fabric to form a back sheet). 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 back sheet 11.

(Exterior sheet)
The exterior sheet 12 is a portion that is provided on the outer surface of the absorbent element 20 on the side opposite to the body and is attached to the wearer. The exterior sheet 12 has an hourglass shape in which both side portions of the central portion in the front-rear direction are constricted, and this is a portion surrounding the wearer's leg.

The exterior sheet 12 can be formed of a non-woven fabric that can be locked by the locking portion 52 of the fastening tape 50. 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. When using a nonwoven fabric, the fabric weight is preferably 10 to 50 g / m ² , particularly 15 to 30 g / m ² .

(Locked part)
As shown in FIGS. 4 and 5, the front portion of the exterior sheet 12 in the front-rear direction and on the upper side of the absorbent element 20 has the exterior sheet 12 that engages the engagement portion 13 of the fastening tape 50. A plurality of locked portions 13 whose outer surfaces are formed in a substantially convex shape toward the outside are formed. The locked portion 13 includes an absorbent body 21 formed in a substantially convex shape toward the outside, a packaging sheet 22 provided on the outer surface side along the absorbent body 21 formed in a substantially convex shape, and the back sheet 11. And the outer peripheral part of each to-be-latched part 13 is isolate | separated by the division line 14 formed by the embossing etc .. As a result, the tape-type disposable diaper 100 can be easily attached to the wearer even by a visually handicapped person by using the tactile sensation of the locked portion 13 formed as a protrusion. Moreover, even if it is a healthy person, the tape type disposable diaper 100 can be easily attached to the wearer at night.

  Moreover, it is preferable to attach the same mark to the to-be-latched part 13 formed in the left-right direction symmetrical position in the to-be-latched part 13. In the present embodiment, Roman characters are respectively attached to the locked portions 13 formed at symmetrical positions in the left-right direction, but symbols such as numerals and animals can also be attached. As a result, even if it is a visually handicapped person, it is a tape type by using the tactile sensation of the locked portion 13 formed in a protruding manner and the mark attached to the locked portion 13 formed at a symmetrical position in the left-right direction. The disposable diaper 100 can be easily worn by the wearer, and the tape-type disposable diaper 100 can be easily worn by the wearer at night even in a healthy person.

(Intermediate sheet)
The intermediate sheet 15 can be formed of the same material as the top sheet 10. The intermediate sheet 15 is preferably bonded to the top sheet 10. When heat embossing or ultrasonic welding is used for the bonding, the material of the intermediate sheet 15 preferably has a melting point similar to that of the top sheet 10. When using a nonwoven fabric for the intermediate sheet 15, it is preferable that the fiber fineness of the nonwoven fabric is about 2.0 to 5.0 dtex.

(Absorption element)
The absorbent element 20 is formed of an absorbent body 21 and a packaging sheet 22 that wraps the absorbent body 21. In addition, it can also form only from the absorber 21, without using the packaging sheet 22 which wraps the absorber 21. FIG.

(Absorber)
The absorber 21 can be formed by 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.

  The absorbent body 21 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.

  When there is no SAP particle in the upper part, the lower part, and the intermediate part of the absorber 21, or there is very little, it cannot be said that it is "dispersed in the whole 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 penetrate into 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 22 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. Examples of superabsorbent polymer particles include starch-based, cellulose-based and synthetic polymer-based particles, such as starch-acrylic acid (salt) graft copolymer, starch-acrylonitrile copolymer saponified product, and sodium carboxymethylcellulose crosslinking. Or an acrylic acid (salt) polymer can be used. As the shape of the superabsorbent polymer particles, a commonly used granular material is suitable, but other shapes can also be used.

  As the superabsorbent polymer particles, those having a water absorption rate of 70 seconds or less, particularly 40 seconds or less are preferably used. If the water absorption speed is too slow, the liquid supplied into the absorbent body 21 is likely to cause a so-called reversal that returns to the outside of the absorbent body 21.

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 21. 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)
The packaging sheet 22 is formed of tissue paper, particularly crepe paper, non-woven fabric, polylaminated non-woven fabric, a sheet having small holes, and the like. 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 .

(Three-dimensional gather)
The three-dimensional gather 30 is a portion that prevents excretion such as urine and soft stool that travels in the width direction along the inner surface of the top sheet 10 to prevent side leakage. The three-dimensional gather 30 is formed by a gather sheet 31 made of a water-repellent nonwoven fabric that is substantially continuous in the width direction, and an elongated elastic elastic member 32 that is fixed to the gather sheet 31 in an elongated state along the front-rear direction. ing.

  The base of the gather sheet 31 has fixing start ends on the left and right side portions of the inner surface of the top sheet 10 in the width direction, extends from the fixing start end to the left and right sides, and the left and right side portions of the inner surface of the back sheet 11 in the width direction. The right and left side portions of the inner surface of the exterior sheet 12 in the width direction are fixed by an adhesive such as hot melt.

  The part inside the fixing start end of the middle part of the three-dimensional gather 30 in the front-rear direction is not fixed to the upper surface of the top sheet 10, and the part inside the fixing start end of the front and rear part of the three-dimensional gather 30 is on the upper surface of the top sheet 10. It is fixed. As a result, the middle part of the three-dimensional gather 30 in the front-rear direction rises toward the body side by the contraction force of the elastic elastic member 32, closely contacts the wearer's leg when worn, and so-called side leakage from around the leg occurs. Can be prevented.

(Plane gathering)
The planar gather 40 is a part that prevents excrement moving in the width direction beyond the three-dimensional gather 30 to prevent side leakage. The planar gathers 40 are elongated elastic members fixed in an extended state along the front-rear direction with respect to the gather sheet 31, the back sheet 11, the gather sheet 31 sandwiched between the gather sheet 31 and the back sheet 11, and the like. The elastic member 41 is formed.

(Fastening tape)
The fastening tape 50 is provided at the rear part of the side flap SF in the front-rear direction. The fastening tape 50 is formed of a base material 51 and a locking portion 52 provided on the inner surface of the base material 51.

  The base material 51 can be formed from a nonwoven fabric, a plastic film, a polylaminated nonwoven fabric, paper, or a composite material thereof. Further, the base portion of the base material 51 is fixed between the gather sheet 31 and the exterior sheet 12 that form the side flaps SF with a hot melt adhesive or the like.

  The locking part 52 can be formed from a hook material of a mechanical fastener. The hook material is a member having a large number of engaging protrusions. Examples of the shape of the engaging protrusion include a letter shape, a J shape, a mushroom shape, a T shape, and a double J shape.

<Method for manufacturing locked portion>
Next, the manufacturing method of the to-be-latched part 13 is demonstrated. In addition, the upper side in FIG. 6 shows the outer surface on the antibody side, and the lower side shows the inner surface on the body surface side. The left side shows the upstream side of the manufacturing process, and the right side shows the downstream side of the manufacturing process.
As shown in FIG. 6A, the absorbent element 20 in which the absorbent body 21 is packaged with the packaging sheet 22 is placed on the inner surface of the top sheet 10. At this time, the thickness of the absorbent element 20 in the vertical direction is substantially uniform. Further, the inner surface of the top sheet 10 and the outer surface of the absorbent element 20 are fixed with an adhesive such as hot melt. In addition, in this embodiment, although the thickness of the up-down direction of the absorption element 20 is formed substantially uniformly, the thickness of the site | part corresponding to the ventral | abdominal absorption element 20A mentioned later is made into the back | dorsal absorption element 20B. It can also be formed thicker than the corresponding part.

  Next, as shown in FIG. 6B, the absorbent element 20 fixed on the inner surface of the top sheet 10 is mounted when the tape-type disposable diaper 100 is mounted by a pair of rolling rolls (not shown). The thickness of the downstream portion of the manufacturing process of the absorbent element 20 located on the stomach side of the person is formed thicker than the thickness of the downstream portion 20A of the manufacturing process of the absorbent element 20 located on the back side of the wearer. ing. That is, the density of the downstream part of the manufacturing process of the absorbent element 20 (referred to as an abdominal absorbent element 20A for convenience) is the density of the upstream part of the manufacturing process of the absorbent element 20 (for convenience of the back absorbent element 20B). It is formed lower than the density.

  Next, as illustrated in FIG. 6C, the back sheet 11 is mounted on the outer surface of the absorbent element 20, and the exterior sheet 12 is mounted on the outer surface of the back sheet 11. Further, the outer surface of the absorbent element 20 and the inner surface of the back sheet 11 are fixed with an adhesive such as hot melt, and the outer surface of the back sheet 11 and the inner surface of the exterior sheet 12 are fixed with an adhesive such as hot melt.

  Next, as shown in FIG. 6 (d), embossing is performed from the outer surface of the exterior sheet 12 toward the absorbent element 20, and a plurality of locked portions 13 and locked portions 13 are formed on the ventral absorbent element 20A. A partition line 14 that partitions the outer peripheral portion is formed, and the tip portion in the vertical direction of the locked portion 13 is formed so as to protrude outward from the outer surface of the back-side absorbent element 20B. Further, the ventral absorbent element 20A adjacent to the ventral absorbent element 20A is separated by a dividing line 14. As a result, the tape-type disposable diaper 100 can be easily attached to the wearer even by a visually handicapped person by using the tactile sensation of the locked portion 13 formed as a protrusion. Moreover, even if it is a healthy person, the tape type disposable diaper 100 can be easily attached to the wearer at night. Further, since the density of the locked portion 13 is low, the locking portion 52 of the fastening tape 50 can be firmly locked to the locked portion 13.

  In the side view, the step A between the tip of the locked portion 13 and the back side absorbent element 20B is set to 0.8 to 8.0 mm, preferably 1.0 to 5.0 mm. If it is less than 0.8 mm, sufficient tactile sensation performance cannot be exhibited. On the other hand, if it exceeds 8.0 mm, the unevenness is conspicuous and the abdomen of the tape-type disposable diaper 100 may be damaged. Further, the step A is obtained by subtracting the thickness of the dorsal absorbent element 20B from the thickness of the portion of the ventral absorbent element 20A where the locked portion 13 is formed. In addition, as shown to Fig.6 (a), in this embodiment, although the thickness of the up-down direction of the absorption element 20 is formed substantially uniformly, the thickness of the site | part corresponding to 20 A of ventral | abdominal absorption elements. Can be formed thicker than the thickness of the portion corresponding to the back-side absorbent element 20B.

<Explanation of terms in the specification>
・ "Weight" is measured as follows. After the sample or test piece has been pre-dried, it is left in a test room or apparatus in a standard state (test location is temperature 20 ± 5 ° C., relative humidity 65% or less) to obtain a constant weight. Pre-drying refers to making a sample or test piece constant in an environment where the relative humidity is 10 to 25% and the temperature does not exceed 50 ° C. In addition, it is not necessary to perform preliminary drying about the fiber whose official moisture content is 0.0%. A sample with a size of 200 mm × 250 mm (± 2 mm) is cut out from the test piece in a constant weight using a rice-basis plate (200 mm × 250 mm, ± 2 mm). Measure the weight of the sample, multiply it by 20, calculate the weight per square meter, and use it as the basis weight.
- "thickness" is used automatic thickness measuring instrument (KES-G5 Handy Compression measurement program), load: 10 gf / cm ^2, and the pressure area: automatically measured under the conditions of 2 cm ^2.
-"Water absorption" is measured by JIS K7223-1996 "Test method for water absorption of superabsorbent resin".
・ "Water absorption rate" is "Time to end point" when JIS K7224-1996 "Water absorption rate test method for superabsorbent resin" is performed using 2 g of superabsorbent polymer and 50 g of physiological saline. And

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

DESCRIPTION OF SYMBOLS 10 Top sheet 11 Back sheet 12 Exterior sheet 13 Locked part 14 Dividing line 21 Absorber 50 Fastening tape 52 Locking part A Level difference

Claims (6)

A liquid-permeable top sheet provided on the body side, a liquid-impermeable back sheet provided on the non-body side, and an absorber that absorbs excrement sandwiched between the top sheet and the back sheet; In the disposable diaper provided with an exterior sheet provided on the opposite side of the back sheet,
A fastening tape having a locking portion on the inner surface is provided on both side portions of the back side portion of the exterior sheet,
Forming a plurality of locked portions to be locked with the locking portion in a portion overlapping the absorbent body in the abdominal side portion of the exterior sheet,
A disposable diaper characterized in that the locked portion is formed to protrude outward from an outer surface of an exterior sheet.   The disposable diaper according to claim 1, wherein the plurality of locked portions are formed at positions symmetrical with respect to the center in the width direction of the disposable diaper.   The disposable diaper of Claim 2 which printed the same mark on the to-be-latched part formed in the said symmetrical position.   The disposable diaper according to any one of claims 1 to 3, wherein a density of the plurality of locked portions is set to be lower than a density of an absorbent body on which the plurality of locked portions are not provided.   The disposable diaper of any one of Claims 1-4 which set the level | step difference of the protrusion part of these several to-be-latched parts to 0.8-8.0 mm. A liquid-permeable top sheet provided on the body side, a liquid-impermeable back sheet provided on the non-body side, and an absorber that absorbs excrement sandwiched between the top sheet and the back sheet; In the manufacturing method of the disposable diaper provided with the exterior sheet provided on the opposite body side of the back sheet,
Fixing the absorbent body having a uniform thickness in a side view to the inner surface of the top sheet;
Forming the thickness of the part of the absorber located on the abdomen side of the wearer to be larger than the thickness of the part of the absorber located on the back side of the wearer;
A back sheet is fixed to the outer surface of the absorber, an exterior sheet is fixed to the outer surface of the back sheet,
The manufacturing method of the disposable diaper which forms a dividing line from the exterior of the exterior sheet located in the site | part of the said absorber located in the wearer's belly side, and forms several to-be-latched part.

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