JP7421975B2 - absorbent articles - Google Patents

Description

The present invention relates to an absorbent article that is highly effective in preventing abdominal leakage. In particular, it relates to a pants-type disposable diaper suitable for male wearers and capable of being wrapped around the penis.

The absorbent material may not be able to fully absorb the body fluids (urine, diarrhea, menstrual blood, etc.) discharged from the wearer of the absorbent article, and the unabsorbed body fluids leak out from the abdomen. There is. This phenomenon is called ``belly leak''.

Conventionally, to prevent abdominal leakage, a pad for preventing abdominal leakage has been inserted inside the absorbent article, or if the wearer is male, a general-purpose pad has been wrapped around the wearer's penis. .

However, when using each of the above-mentioned pads, if the wearer frequently turns over while sleeping or is relatively active, the pads may shift and cause abdominal leakage.

The following Patent Documents 1 to 3 are disclosed as prior art related to the present invention.
The disposable absorbent article for men according to Patent Document 1 has an elastic band that can be expanded and contracted in the width direction on the surface side of an absorbent main body, and this elastic band has an elastic free section. Since this stretchable part is not joined to the absorbent main body, male genitalia can be inserted between the absorbent main body and the stretchable part.

In the pants-type absorbent article for men according to Patent Document 2, both the absorbent pad and the absorbent body have a substantially kite-shaped shape in which the width direction dimension gradually decreases from the front end to the rear end in plan view. The absorbent pad and the absorbent body are bonded to each other at the center in the width direction and at the center in the front-rear direction, with an adhesive region extending thinly in the front-rear direction.

The disposable diaper for adult men according to Patent Document 3 includes a skin-facing side member, a non-skin-facing side member, and an absorbent body sandwiched between both members, and the non-skin-facing side member is the most. The cover sheet has a cover sheet on its surface, and one or more fold structures are formed in the cover sheet that overlaps the crotch contact area of the absorbent body.

As mentioned above, various disposable diapers for men have been disclosed, but they are not highly effective in preventing abdominal leakage because the absorbent material does not fit according to the size of the wearer's penis. .

Japanese Patent Application Publication No. 2015-054136 JP2019-208698A Japanese Patent Application Publication No. 2018-192009

Therefore, the main object of the present invention is to provide an absorbent article that is highly effective in preventing abdominal leakage.

Absorbent articles that have solved the above problems are as follows.
<First aspect>
an exterior body having a front body and a back body;
an interior body provided on an inner surface of the exterior body from a front body to a back body, the back body of the interior body being fixed to the back body of the exterior body,
The front body of the interior body is not fixed to the front body of the exterior body, or is detachably fixed to the front body,
An absorbent article characterized in that, when worn, the front body of the inner body is folded to form a blocking wall that prevents bodily fluid from leaking from the abdomen.

(effect)
The absorbent article according to the present invention has an inner body, and the front body of the inner body is not fixed to the front body of the outer body, or is detachably fixed to the front body of the outer body. That is, since the front body of the inner body is separated from the front body of the outer body, the front body of the inner body can be freely folded when worn. By forming a blocking wall by pressing and bending the inner body, it is possible to prevent bodily fluid from leaking from the abdomen. In addition, if the front body of the inner body is removably fixed to the front body of the outer body, for example, when the wearer wears an absorbent article, the front body of the inner body is attached to the front body of the outer body. By peeling it off, the front body of the interior body can be separated from the front body of the exterior body.

<Second aspect>
The wearer of the absorbent article is a man,
When worn, the left front portion of the front body of the interior body is folded back toward the inner side toward the right rear direction, and the right front portion of the front body of the interior body is folded back toward the inside toward the left rear direction. ,
The bag-shaped blocking wall is formed by overlapping the folded left front part and the right front part,
The absorbent article according to the first aspect, wherein the absorbent article is configured such that a wearer's penis is inserted into the bag-shaped barrier wall.

(effect)
When worn, the left front part of the front body of the interior body is folded back toward the inside toward the right rear direction. At the same time, the right front portion of the front body of the interior body is folded back toward the inner side toward the left rear direction. Note that the order of folding is not particularly limited; you may fold the left front part first and then the right front part, or you may fold the right front part first and then the left front part. You can turn it around. By overlapping the folded parts in this way, a bag-shaped barrier wall is formed inside the absorbent article. By inserting the wearer's penis into the inside of the bag-like blocking wall, the wearer's penis becomes surrounded by the blocking wall, so that abdominal leakage is less likely to occur when the wearer urinates. That is, it becomes possible to wrap the penis using the front section of the inner body. Since the present invention has a structure in which the conventional penis-wrapping pad and absorbent article are integrated, the wearer does not have difficulty aligning the penis-wrapping pad inside the absorbent article when wearing the product. The advantage is that it disappears. Furthermore, when the wearer moves while wearing the absorbent article, the position of the penis-wrapping pad inside the absorbent article is likely to shift, which is less likely to cause abdominal leakage.

<Third aspect>
A first detachable member is provided on the back side of the left front side portion or the right front side portion of the front body of the interior body,
When worn,
The first removable member is located between the left front part and the right front part in a state where the left front part and the right front part are overlapped,
The absorbent article according to the second aspect, wherein the left front portion and the right front portion are integrated by the first detachable member.

(effect)
By using the first detachable member to integrate the folded left front part and right front part of the front body of the interior body, the bag shape of the blocking wall becomes difficult to collapse. As a result, even if the wearer of the absorbent article moves while wearing the absorbent article, the wearer's penis remains contained within the bag-like barrier, making it difficult for abdominal leakage to occur.

<Fourth aspect>
A first detachable member and a second detachable member are provided on the back side of the left front side portion and the right front side portion of the front body of the interior body,
When worn,
When the left front part and the right front part are overlapped, the first removable member is located between the left front part and the right front part, and the second removable member is located on the back side of the overlapped part. located on the side,
The left front part and the right front part are integrated by the first detachable member,
The absorbent article according to the second aspect, wherein the integrated left front part and right front part are joined to the front body of the exterior body by the second detachable member.

(effect)
The effects of the first detachable member are the same as those of the third aspect.
The fourth aspect is characterized in that it includes a second detachable member. By fixing the bag-shaped blocking wall to the inner surface of the front body of the exterior body using the second detachable member, the bag-shaped blocking wall is less likely to shift inside the absorbent article. That is, it is possible to reduce the possibility that the wearer's penis will protrude outside the bag-like barrier due to movement of the bag-shaped barrier inside the absorbent article, which will result in abdominal leakage. can.

According to the present invention, an absorbent article that is highly effective in preventing abdominal leakage can be provided.

FIG. 2 is a plan view (inner side) of the pant-type disposable diaper in an unfolded state. FIG. 2 is a plan view (outer surface side) of the pant-type disposable diaper in an unfolded state. 2 is a sectional view taken along line 4-4 in FIG. 1. FIG. 2 is a sectional view taken along line 5-5 in FIG. 1. FIG. FIG. 2 is a sectional view taken along line 6-6 in FIG. 1; FIG. 2 is a schematic plan view (inner surface side) with a part of the interior body cut away. FIG. 2 is a schematic plan view (inner side) of the pant-type disposable diaper in an unfolded state, showing a fixed portion and a non-fixed portion of the inner body and the outer body. FIG. 2 is a schematic plan view (inner side) of the pant-type disposable diaper in the unfolded state, showing the state before the penis is wrapped. FIG. 2 is a schematic plan view (inner side) of the pant-type disposable diaper in the unfolded state, showing a state in which the first step of penis wrapping has been completed. FIG. 2 is a schematic plan view (inner side) of the pant-type disposable diaper in the unfolded state, showing a state in which the second step of penis wrapping has been completed. 10 is a schematic cross-sectional view taken along line 3-3 in FIG. 10 (exterior body 20 is omitted), and shows a state in which the penis is inserted into the inside of the bag-shaped blocking wall. FIG. 2 is a schematic plan view (inner side) of the pant-type disposable diaper in an unfolded state, showing a state before forming a blocking wall, which is different from when the diaper is wrapped around the penis. FIG. 2 is a schematic plan view (inner side) of the pant-type disposable diaper in an unfolded state, showing a state after forming a blocking wall, which is different from when the diaper is wrapped around the penis. 14 is a schematic cross-sectional view seen from the X direction in FIG. 13. FIG.

Hereinafter, a pants-type disposable diaper as an example of an absorbent article will be explained in detail with reference to the accompanying drawings.

1 to 14 show a pants-type disposable diaper. This pant-type disposable diaper (hereinafter also simply referred to as a diaper) includes an exterior body 20 that spans a front body F and a back body B, and an interior body that is fixed to the inner surface of the exterior body 20 that extends from the front body F to the back body B. 10. The interior body 10 includes an absorbent body 17 interposed between a liquid-permeable top sheet 11 and a liquid-impermeable back sheet 12. During manufacturing, after the back surface of the back body B of the interior body 10 is joined to the inner surface (top surface) of the exterior body 20 using a joining means such as hot melt adhesive, the interior body 10 and the exterior body 20 are assembled to the front body F. The waist opening is folded at the front-rear (vertical) center, which is the boundary of the back body B, and the side seal portions 21 are formed by joining both sides of the back body B with heat welding or hot melt adhesive. A pants-type disposable diaper is formed with a pair of left and right leg openings. Note that the boundary position between the front body F and the back body B of the inner body 10 is the same or almost the same as the boundary position between the front body F and the back body B of the exterior body 20, and the center of the disposable diaper in the front-rear direction WD is This is the boundary position.

(Example of structure of interior body)
As shown in FIGS. 3 to 5, the interior body 10 has a structure in which an absorbent body 17 is interposed between a top sheet 11 and a back sheet 12, and absorbs excreted liquid that has passed through the top sheet 11. The absorber 17 absorbs and retains it. Although the planar shape of the interior body 10 is not particularly limited, it is generally approximately rectangular as shown in the drawings.

As the top sheet 11 that covers the front side (also referred to as "skin-contacting surface side" or "inner surface side") of the absorbent body 17, a perforated or non-porous nonwoven fabric, a porous plastic sheet, or the like is suitably used. The material fibers constituting the nonwoven fabric can be synthetic fibers such as olefins such as polyethylene or polypropylene, polyesters, and polyamides, as well as recycled fibers such as rayon and cupro, and natural fibers such as cotton. A nonwoven fabric obtained by an appropriate processing method such as a spunbond 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 superior in terms of flexibility and drapability, and the thermal bond method is superior in that it is bulky and soft. When a large number of through holes are formed in the top sheet 11, there is an advantage that urine and the like are quickly absorbed. In the illustrated embodiment, the top sheet 11 wraps around the side edges of the absorbent core 17 and extends to the back side of the absorbent core 17.

The back sheet 12 that covers the back side (also referred to as the "non-skin contact side" or "outer side") of the absorbent body 17 is a liquid-impermeable plastic sheet such as polyethylene or polypropylene, but in recent years, it has been used to prevent stuffiness. From this point of view, those having moisture permeability are preferably used. This water-blocking/breathable sheet can be obtained by melt-kneading inorganic fine particles such as calcium carbonate in an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching the sheet in uniaxial or biaxial directions. A microporous sheet can be suitably used. In the illustrated embodiment, the back sheet 12 is folded back together with the top sheet 11 on both sides of the absorber 17 in the width direction, but the structure is not limited to this, and other known structures may also be adopted.

Three-dimensional gathers BG that fit mainly around the legs are formed on both sides of the interior body 10. As shown in FIGS. 4 and 5, the three-dimensional gathers BG includes a fixing part fixed to the side of the back surface of the interior body 10, and a part extending from the fixing part to the side of the interior body to the front side of the interior body. The main body extends to the inner body, the front and rear ends of the main body are fixed to the sides of the surface of the interior body in a fallen state, and the space between these fallen parts is not fixed. The free portion is formed by a gathered sheet 15 that is folded back to form a double sheet, and an elongated gathered elastic member 16 is disposed at the tip of the free portion between the double sheets. With this structure, the free portion of the three-dimensional gathers BG that protrudes from the side edge of the absorbent body due to contraction of the gather elastic member 16 stands up as shown by the two-dot chain line in FIG. 4 in the product state. As the gather sheet 15, a water-repellent nonwoven fabric is preferably used.

As the gather elastic member 16, commonly used materials such as styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicone, and polyester can be used. Further, in order to make it difficult to see from the outside, it is preferable that the thickness be 925 dtex or less, the tension be 150 to 350%, and the interval be 7.0 mm or less. As the gather elastic member 16, in addition to the string shape as shown in the figure, a tape shape having a certain width can also be used.

Similar to the top sheet 11, the material fibers constituting the gather sheet 15 mentioned above include synthetic fibers such as olefins such as polyethylene or polypropylene, polyesters, and polyamides, recycled fibers such as rayon and cupro, and natural fibers such as cotton. Nonwoven fabrics obtained by appropriate processing methods such as spunbond method, thermal bonding method, melt blown method, needle punching method, etc. can be used. It is better to use a non-woven fabric with excellent air permeability. Furthermore, the gather sheet 15 is made of silicone-based, paraffin metal-based, and alkylchromic chloride-based water repellents in order to prevent the permeation of urine, etc., prevent rashes, and improve the feel (dry feeling) on the skin. It is desirable to use a water-repellent nonwoven fabric coated with.

(Example of structure of exterior body)
As shown in FIGS. 3 to 5, the exterior body 20 has a two-layer structure consisting of a holding sheet 20A and a back sheet 20B, each made of a nonwoven fabric, etc., and between the holding sheet 20A and the back sheet 20B, and Elastic members 24 to 26, 28 are arranged between the sheets of a folded portion 20C formed by folding the sheet 20B inward at the edge of the waist opening, and the outer body 20 contracts due to the contraction force of the elastic members in the natural length state. This gives the exterior body 20 elasticity. The planar shape as a whole has a substantially hourglass shape due to the concave leg circumferential lines 29 formed on both sides of the middle to form leg openings.

In the illustrated embodiment of the exterior body 20, in the unfolded shape shown in FIGS. 1 and 2, a waist elastic member 24 disposed in the vicinity of the waist opening 23, and a waist elastic member 24 in the front body F and back body B in the longitudinal direction A plurality of waist lower elastic members 25 are arranged along the width direction at intervals, and in each of the front body F and the back body B, apart from the group of waist lower elastic members 25, one side They extend in a curved manner from the seal part 21 along one leg opening toward the groin area, cross the groin area, and extend along the other leg opening to the other side seal part 21, intersecting each other. A plurality of curved elastic members 26 and 28 are arranged at regular intervals. These elastic members 24 to 26 and 28 are each fixed in a state of being stretched at a predetermined stretching rate along the direction of extension thereof. In addition, in this exterior body 20, an elastic member that continues along the leg circumference line 29 from the side seal part of the front body part F to the side seal part of the back body part B is not provided.

The waist elastic member 24 is a plurality of rubber threads, etc. arranged at intervals in the vertical direction near the edge of the waist opening within the range of the side seal portion 21 where the front body F and the back body B are joined. This is a long and narrow elastic member that applies elastic force to tighten the diaper around the body's torso to attach the diaper to the body. The waist elastic member 24 uses thread rubber in the illustrated example, but may also be made of a tape-like elastic member, for example. Further, although the waist elastic member 24 in the illustrated embodiment is sandwiched between the nonwoven fabric of the folded portion 20C of the backsheet 20B at the waist, it may be sandwiched between the presser sheet 20A and the backsheet 20B.

The waist lower elastic member 25 is an elongated elastic member such as thread rubber, which is arranged at intervals in the longitudinal direction in a range in the front-rear direction that includes the side seal portions 21, and is an elongated elastic member such as a rubber thread. This is to apply stretching force in the width direction to the surrounding portions to make the diaper fit closely to the body. Note that the boundary between the waist elastic member 24 and the lower waist elastic member 25 does not necessarily have to be clear. For example, among the elastic members arranged in the width direction at intervals in the longitudinal direction on the front body F and the back body B, some on the upper side function as waist elastic members, although the number cannot be specified, It is sufficient that the remaining elastic member functions as a waist lower elastic member.

In the back body B, the back side curved elastic member 26 disposed separately from the lower waist elastic member 25 is an elongated elastic member such as a rubber thread, and is arranged along a predetermined curve. The dorsal side curved elastic member 26 may be one piece, but it is preferable that there is a plurality of pieces, and in the illustrated example, there are four elongated elastic members such as thread rubber, and these dorsal side curved elastic members 26 are They are spaced apart without intersecting each other. This dorsal curved elastic member 26 is preferably 3 to 20 mm thick so as to form a predetermined stretch zone, rather than being arranged as a bundle of about two or three elastic members closely spaced. Three or more, preferably four or more, are arranged with an interval of about 6 to 16 mm.

In the front body F of the exterior body 20, the ventral curved elastic member 28, which is disposed separately from the lower waist elastic member 25, is an elongated elastic member such as thread rubber, and is arranged along a predetermined curve. . The ventral curved elastic member 28 may be one, but preferably has a plurality of thread-like elastic members. In the illustrated example, there are four thread-like elastic members. , spaced apart. The ventral side curved elastic member 28 is also preferably 3 to 20 mm thick so as to form a predetermined elastic zone, rather than being arranged as a bundle of about two or three elastic members closely spaced. Three or more, preferably four or more, are arranged with an interval of about 6 to 16 mm.

In addition, as shown in FIG. 2, the lower waist elastic member 25 and the curved elastic members 26 and 28 disposed in the front body F and the back body B are continuously fixed to the exterior body 20 during manufacturing, and then absorbent. The middle part in the width direction of the part that overlaps with the body 17 is cut into pieces according to a predetermined cutting pattern to form a non-contractable part on which no contractile force is applied, and the part extending laterally from this non-contractable part is a contractile part on which contractile force acts. (that is, a portion where the lower waist elastic member 25 and the curved elastic members 26 and 28 remain continuously). Thereby, unnecessary shrinkage of the inner body (particularly the absorbent body 17) in the width direction can be prevented. Of course, the lower waist elastic member 25 and the curved elastic members 26, 28 can also be arranged continuously across the interior body 10.

The above-described exterior body 20 can be manufactured by, for example, the techniques described in Japanese Patent Application Laid-Open No. 4-28363 and Japanese Patent Application Laid-Open No. 11-332913. Furthermore, in order to cut the curved elastic members 26 and 28 on the inner body 10 to make them discontinuous, the method is described in JP-A No. 2002-35029, JP-A No. 2002-178428, and JP-A No. 2002-273808. A cutting method is preferably employed.

Unlike the illustrated example, the curved elastic members 26 and 28 may be provided only on either the front body F or the back body B. In addition, when the curved elastic members 26 and 28 are provided on both the front body F and the back body B, some or all of the group of curved elastic members 28 arranged on the front body F side and those arranged on the back body B side Although a form (not shown) in which a part or all of the group of curved elastic members 26 intersect with each other can also be adopted, as in the illustrated example, the group of curved elastic members 28 disposed on the front body F side, It is preferable that the group of curved elastic members 26 disposed on the back body B side be separated from each other in the longitudinal direction at an intermediate portion in the front-rear direction, particularly at a position slightly biased toward the front body F, without intersecting each other.

The elongation rate of the elastic members 24 to 26 and 28 when fixed can be determined as appropriate, but in the case of a normal adult, the waist elastic member 24 is about 160 to 320%, and the waist lower elastic member 25 is about 160 to 320%. , the curved elastic members 26 and 28 can be approximately 230 to 320%.

(Cover sheet)
As shown in FIGS. 1 and 3, a cover sheet 50 is used to cover the front and rear ends of the interior body 10 attached to the inner surface of the exterior body 20 and to prevent leakage from the front and rear edges of the interior body 10. , 60 may be provided. To explain the illustrated embodiment in more detail, the front cover sheet 50 extends across the entire width from the inner surface of the folded portion 20C at the waist side end of the inner surface of the front body F to a position overlapping with the front end of the interior body 10. The rear cover sheet 60 extends over the entire width in the width direction from the inner surface of the folded portion 20C at the waist side end of the inner surface of the back body B to a position overlapping with the rear end of the interior body 10. A folded portion 20C formed by folding back the outer package 20 onto the inner surface of the diaper may be extended to a portion overlapping with the inner body 10 to form a portion equivalent to the illustrated cover sheets 50, 60.

(Absorber)
As shown in FIG. 3 and the like, the absorbent body 17 has a single layer structure, but it may have a plurality of layers. The absorbent body 17 comprises superabsorbent polymer particles, preferably a mixed assembly of pulp fibers and superabsorbent polymer particles. This absorbent body 17 can be packaged with a packaging sheet 14 having liquid permeability and liquid retention properties such as crepe paper, if necessary, in order to maintain its shape and polymer.

As the superabsorbent polymer particles, those used in this type of absorbent article can be used as is. For example, they can be sieved by sieving (shaking for 5 minutes) using a 500 μm standard sieve (JIS Z8801-1:2006). It is desirable that the proportion of particles remaining on the sieve is 30% by weight or less, and the proportion of particles remaining on the sieve is A content of 60% by weight or more is desirable.

The superabsorbent polymer particles are not particularly limited, but those having a water absorption rate of 35 to 60 seconds and a water absorption amount of 50 to 70 g/g can be suitably used. Superabsorbent polymer particles include starch-based, cellulose-based, and synthetic polymer-based particles, such as starch-acrylic acid (salt) graft copolymers, saponified starch-acrylonitrile copolymers, and cross-linked sodium carboxymethyl cellulose. Materials such as polyesters and acrylic acid (salt) polymers can be suitably used. The basis weight of the superabsorbent polymer particles can be determined as appropriate depending on the amount of absorption required for the product. Therefore, although it cannot be generalized, the absorbent body 17 as a whole can have a weight of 100 to 350 g/m ² .

The shape of the absorbent core 17 can be determined as appropriate, and may be rectangular, but it is preferable to have a constricted portion 13 in the crotch region that is narrower than both the front and rear sides. The dimensions of the constricted portion 13 can be determined as appropriate, and the width of the narrowest portion can be approximately 40 to 60% of the total width.

The weight ratio of the superabsorbent polymer particles to the pulp fibers of the absorbent body 17 can be determined as appropriate. For example, the total basis weight (total of pulp and superabsorbent polymer particles) is preferably 250 to 350 g/m ² , and the weight ratio of superabsorbent polymer particles to pulp fibers is about 100 to 200%, particularly 120 to 180 g/m 2 . % is preferable.

(Fixing of interior body)
FIG. 7 shows fixed portions TC (portions covered by dotted lines extending in the width direction) and non-fixed portions TN (portions covered by diagonal lines) of the interior body 10 and the exterior body 20. As shown in FIG. 7, the back surface of the back body B of the interior body 10 is fixed to the inner surface of the back body B of the exterior body 20, and the back surface of the front body F of the interior body 10 is fixed to the front body F of the exterior body 20. is not fixed to the inner surface of the Strictly speaking, of the front body F of the interior body 10, the rear side in the longitudinal direction LD is fixed to the exterior body 20, but at least the front side in the longitudinal direction LD is not fixed to the exterior body 20. In the present invention, the meaning that the front body F of the interior body 10 is not fixed to the front body F of the exterior body 20 means that all parts of the front body F of the interior body 10 are fixed to the front body F of the exterior body 20. As shown in FIG. 7, the front body F of the interior body 10 is fixed to the exterior body 20 on the rear side of the LD in the front-rear direction, but at least the front side of the LD in the front-rear direction is fixed to the exterior body 20. This includes cases where it is not fixed to the body 20. Specifically, the meaning that the front body F of the interior body 10 is not fixed to the front body F of the exterior body 20 means that when the total length of the front body F of the interior body 10 in the longitudinal direction LD is taken as 100%, This means that the length of the unfixed portion TN of the front body F of the interior body 10 in the longitudinal direction LD is 10% or more. In this way, by providing the length of the non-fixed portion TN of the front body F of the inner body 10 by 10% or more, the wearer can fold and cut off the non-fixed portion TN of the front body F when wearing the absorbent article. Forming the wall 70 becomes easier. Specifically, the length of the non-fixed portion TN of the front body F of the interior body 10 is preferably about 50 mm to 250 mm, more preferably about 70 mm to 200 mm. In addition, in the present invention, since at least the front part of the front body F of the interior body 10 is not fixed to the front body F of the exterior body 20, the front end of the front body F in the longitudinal direction LD is This is the starting point for measuring the length of the fixed portion TN in the front-rear direction LD.

Further, in providing the non-fixed portion TN in at least the front side portion of the front body F of the interior body 10, it is preferable that the entire front body F of the interior body 10 in the width direction WD is made non-fixed. This is because it becomes easier for the wearer to form the blocking wall 70. However, a portion of the front body F of the interior body 10 in the width direction WD may be fixed to the front body F of the exterior body 20. For example, the center portion of the front body F of the interior body 10 in the width direction WD may be fixed to the front body F of the exterior body 20, and the left and right portions in the width direction WD may be unfixed. This is because even with this configuration, it is possible to wrap the wearer's penis with the front body F of the inner body 10. In addition, for example, the center portion and left side portion of the front body F of the interior body 10 in the width direction WD may be fixed to the front body F of the exterior body 20, and the right side portion in the width direction WD may be unfixed. In this case, it is difficult to wrap the penis, but by folding the right side of the front body F of the inner body 10 in the width direction WD, the blocking wall 70 can be formed on the right side. be. Taking a similar approach, the center portion and right side portion of the front body F of the interior body 10 in the width direction WD may be fixed to the front body F of the exterior body 20, and the left side portion in the width direction WD may be unfixed. Note that a configuration in which the left side and right side portions of the front body F of the interior body 10 in the width direction WD are fixed to the front body F and the central portion in the width direction WD is not fixed is not preferable. This is because it is difficult to form the blocking wall 70 by folding only the central portion in the width direction WD of the front body F of the interior body 10. That is, in the width direction WD of the front body F of the interior body 10, at least one of the left side portion and the right side portion needs to be unfixed to the front body F of the exterior body 20. In addition, when only the left side portion of the front body F of the interior body 10 in the width direction WD is unfixed, a certain length of the unfixed portion TN in the width direction WD must be secured. This is because if the length of the non-fixed portion TN is short, only a small amount of the blocking wall 70 can be formed, and there is a possibility that the effect of preventing front leakage of body fluids cannot be sufficiently ensured. Specifically, when the total length of the front body F of the interior body 10 in the width direction WD is taken as 100%, the length of the left non-fixed portion TN of the front body F of the interior body 10 in the longitudinal direction LD is 60%. It is preferably at least 70%, more preferably at least 70%. For example, the length of the non-fixed portion TN formed on the left side of the front body F of the interior body 10 is preferably about 80 mm to 150 mm toward the right from the left end of the front body F of the interior body 10 as a starting point. , more preferably about 90 mm to 120 mm. In the above explanation, the case where the non-fixed portion TN is provided only on the left side of the front body F of the interior body 10 has been described, but the same applies when the non-fixed portion TN is provided only on the right side of the front body F of the interior body 10. I can say that. In addition, when measuring the length in the width direction WD of the non-fixed portion TN of the front body F of the interior body 10 described above or calculating the percentage, the front side of the front body F of the interior body 10 in the longitudinal direction LD is measured. Use the edge as a reference.

Further, in the embodiment of FIG. 7, strictly speaking, not all parts of the back body B of the interior body 10 are fixed to the back body B of the exterior body 20. Specifically, a portion of the back body B of the interior body 10 on the front side in the longitudinal direction LD and on the outside in the width direction WD (the portion near the leg circumference line 29 of the exterior body 20) is fixed to the back body B of the exterior body 20. It has not been. However, most of the back body B of the interior body 10 is fixed to the back body B of the exterior body 20. As described above, in the present invention, the meaning that the back body B of the interior body 10 is fixed to the back body B of the exterior body 20 means that all parts of the back body B of the interior body 10 are fixed to the rear body B of the exterior body 20. The case is not limited to the case where it is fixed to the body part B. As shown in FIG. This also includes the case where most of the body part B is fixed to the back body part B of the exterior body 20. Specifically, when the back body B of the interior body 10 is fixed to the back body B of the exterior body 20, it means that 80% or more of the area of the back body B of the interior body 10 is fixed to the back body B of the exterior body 20. It means that it is fixed. It is preferable that 80% or more of the area of the back body B of the interior body 10 is fixed to the back body B of the exterior body 20, and 90% or more of the area is fixed to the back body B of the exterior body 20. It is more preferable that If the area of the back body B of the interior body 10 that is fixed to the back body B of the exterior body 20 is smaller than 80%, the interior body 10 may peel off from the exterior body 20, or the exterior body 20 may become sluggish when worn. This problem arises.

(Removable member)
In the above description, the front body F of the interior body 10 is not fixed to the front body F of the exterior body 20 in the product state. The present invention is not limited to such a form, and the front body F of the interior body 10 is temporarily fixed to the front body F of the exterior body 20 in the product state (“detachably fixed”, “temporarily fixed”). ) may also be used. For example, as shown in FIG. 8, a removable member 80 is provided on the back surface of both front sides of the front body F of the interior body 10, and the back surface of the front body F of the interior body 10 is attached to the exterior body 20 through the detachable member 80. It may be attached to the inner surface of the front body F. In this way, by temporarily fixing the front body F of the inner body 10 to the front body F of the outer body 20 in the product state, the front body F of the inner body 10 can be prevented from being inadvertently inside the absorbent article. Since the absorbent articles are not bent, it is possible to prevent variations in shape among the plurality of absorbent articles housed in the package at the time of sale. The removable member 80 can attach the back side of the front body F of the interior body 10 to the inner surface of the front body F of the exterior body 20, but once it is attached, it cannot be removed; It can also be peeled off relatively easily from a stuck state. As such a detachable member 80, a male material of a so-called mechanical tape (also referred to as a "hook material"), a re-adhesive hot melt, or the like can be used. Note that when the hook material is provided as the detachable member 80 on the back surface of the front body F of the interior body 10, a female material (“loop material”) is provided on the inner surface of the front body F of the exterior body 20 in the portion facing the hook material. ) may be provided, but this female material may not be provided. When the female material is provided, there is an advantage that the front body F of the interior body 10 and the front body F of the exterior body 20 can be firmly fixed, but it has the disadvantage that the number of parts increases, which increases manufacturing costs. There is profit. Furthermore, when performing so-called penis wrapping, which will be described later, the female material attached to the front body of the exterior body 20 may come into direct contact with the wearer's skin, causing discomfort to the wearer.

The position where the detachable member 80 is provided is not particularly limited, but from the viewpoint of preventing the front body F of the interior body 10 from being bent inadvertently in the product state, it should be provided at the front end of the front body F of the interior body 10. is preferred. For example, one or more detachable members 80 may be provided at the center of the front end of the front body F of the interior body 10 in the width direction WD. However, from the viewpoint of preventing the front body F of the interior body 10 from unintentionally bending in the product state, detachable members 80 are provided on both front sides of the front body F of the interior body 10, as shown in FIG. This is desirable.

(penis wrap)
Next, a procedure in which the wearer folds the front body F of the inner body 10 and wraps around the penis when wearing the inner body 10 will be described. FIG. 8 is a developed view (schematic view) showing the state before starting to wrap the penis. In the state shown in FIG. 8, the back surface of the front portion of the front body F of the interior body 10 is temporarily fixed to the inner surface of the front body F of the exterior body 20 by the detachable member 80. When this detachable member 80 is temporarily unfixed (when the front body F of the interior body 10 is peeled off), the front part of the front body F of the interior body 10 separates from the front body F of the exterior body 20 and can be bent freely. It becomes possible. The front portion of the front body F of the interior body 10 in this state is referred to as a free portion. In FIG. 8, the region that becomes the free portion is marked with a + mark.

As described above, after the front part of the front body F of the interior body 10 becomes a free part, first, the front part of the front body F of the interior body 10 is valley-folded along the first valley fold line L1. That is, as shown by the arrow (1) in FIG. 8, the left front portion 81 of the front body F of the interior body 10 is folded back toward the inner side toward the rear side BS in the front-rear direction LD and the right side RS in the width direction WD. FIG. 9 shows a state after the left front portion 81 of the front body F of the interior body 10 is folded back. The inner surface of the left front portion 81 of the front body F of the interior body 10 faces the inner surface of the unfolded portion of the front body F of the interior body 10. In this state, it can be said that the left front portion 81 of the front body F of the folded interior body 10 has become a blocking wall 70 that prevents bodily fluids from leaking from the abdomen. Note that the removable member 80 (first removable member 80A) attached to the back surface of the left front portion 81 of the front body F of the interior body 10 is exposed to the front side.

From the state shown in FIG. 9, next, as shown by the arrow (2), the right front portion 82 of the front body F of the interior body 10 is moved along the second valley fold line L2 to the front-back direction LD rear side BS and Fold back toward the inner side toward the left side LS in the width direction WD (valley fold). FIG. 10 shows a state after the right front portion 82 of the front body F of the interior body 10 is folded back. The inner surface of the right front portion 82 of the front body F of the interior body 10 faces the back surface of the left front portion 81 of the front body F of the interior body 10. In this state, it can be said that the right front portion 82 of the front body F of the folded interior body 10 has also become the blocking wall 70 that prevents bodily fluid from leaking. The inner surface of the right front part 82 of the front body F of the folded interior body 10 is connected to the back surface of the left front part 81 of the front body F of the interior body 10 by the first detachable member 80A. . That is, as shown in FIG. 11, in cross-sectional view, the unfolded portion of the front body F of the interior body 10 is located on the lower side, and the left front portion 81 and the right front portion of the folded front body F of the interior body 10 are located on the lower side. The side portion 82 is located on the upper side, and the bag-shaped blocking wall 70 is formed as a whole. Then, when the wearer inserts the penis 83 into the bag-shaped blocking wall 70, the penis wrapping is completed. By forming the bag-shaped blocking wall 70, the effect of preventing the wearer's urine from leaking from the abdomen can be enhanced compared to the case where a simple blocking wall 70 is formed. Note that the removable member 80 (second removable member 80B) attached to the back surface of the right front portion 82 of the front body F of the interior body 10 is exposed to the front side.

From the state of FIG. 9, next, as shown by the arrow (3) in FIG. 10 , the left front part 81 and right front part 82 of the front body F of the interior body 10 are tilted forward in the front-rear direction WD. is preferred. Then, using the second detachable member 80B provided on the back surface of the right front part 82 of the front body F of the interior body 10, the left front part 81 and the right front part 82 of the front body F of the interior body 10 are attached to the exterior body 20. It is preferable that the bag-shaped blocking wall 70 is attached to the inner surface of the front body F of the absorbent article so that it does not move inside the absorbent article even if the wearer's body position changes. Since the bag-shaped blocking wall 70 does not move, the effect of preventing the wearer's urine from leaking from the abdomen can be further enhanced.

(Other barrier walls)
The method of forming the blocking wall 70 is not limited to the above-mentioned penis wrapping method. For example, as shown in FIGS. 12 to 14, a mountain-shaped blocking wall 70 extending substantially linearly in the width direction WD can be provided on the front body F of the interior body 10.

FIG. 12 shows the state before the blocking wall 70 is formed. When forming the blocking wall 70, from the state shown in FIG. solve. That is, the front body F of the interior body 10 is peeled off from the front body F of the exterior body 20. Then, the front end of the front body F of the interior body 10 is moved rearward in the front-rear direction LD. At that time, at the positions of two valley fold lines L3 and L4 extending substantially linearly in the width direction WD, which are provided substantially parallel to each other at intervals in the front-rear direction LD on the front body F of the interior body 10. , the front body F of the interior body 10 is valley-folded. Then, as shown in FIGS. 13 and 14, a mountain-shaped blocking wall 70 extending substantially linearly in the width direction WD is formed between the two valley fold lines L3 and L4. By providing such a blocking wall 70, for example, when the wearer urinates, it is possible to prevent urine from moving toward the abdomen, thereby reducing the possibility of abdominal leakage. After forming the mountain-shaped blocking wall 70, in order to maintain the shape of the blocking wall 70, the back surface of the front body F of the interior body 10 is attached via the first detachable member 80A and the second detachable member 80B. It is preferable to fix it again to the inner surface of the front body F of the exterior body 20.

(valley fold line)
The positions where the valley fold lines L1 to L4 are provided are not particularly limited. In FIG. 8, the front part of the valley fold line L1 extends to the front edge of the front body F of the interior body 10, and the front part of the valley fold line L2 extends to the part where it intersects with the valley fold line L1. In this modification, if the right side portion 82 of the front body F of the interior body 10 is folded back first and then the left side portion 81 of the front body F of the interior body 10 is folded back, the front side portion of the valley fold line L2 is It may be extended to the front edge of the front body F of No. 10, and the front part of the valley fold line L1 may be extended to the part where it intersects with the valley fold line L2. Further, the position where the valley fold lines L1 and L2 intersect may be moved to the left in the width direction WD, or may be moved to the right. However, in order to prevent urine leakage when the penis is wrapped, when the front body F of the inner body 10 is folded, the tip portion 71 (as shown in FIG. Since it is preferable that the absorbent body 17 exists at the tip of the triangular portion formed when the fold F is folded, it is preferable to provide the intersection of the valley fold lines L1 and L2 at the position where the absorbent body 17 exists. preferable. If the intersection of the valley fold lines L1 and L2 is provided at a position where the absorbent body 17 does not exist (that is, in front of the front edge of the absorbent body 17), there is a risk that urine may leak from the tip portion 71 when urinating. Because there is. Similarly, in FIG. 12, the positions of the valley fold lines L3 and L4 can be freely changed in the front-rear direction LD.

In addition, in the above embodiment, by providing embossments, grooves, etc. (concave from the inner surface side to the back side) in advance at the positions of the valley fold lines L1 to L4 of the front body F of the interior body 10 in the product state, The wearer is shown the bending position of the front body F of the inner body 10 and is guided to bend it at that position. However, it is not always necessary to provide the valley fold lines L1 to L4 for guiding in this manner. That is, basically, the wearer can freely bend the front body F of the interior body 10 at any desired position. If it is desired to teach the wearer how to wrap the penis, instructions on how to use the product may be written on the product package.

(Omission of detachable parts)
The above-mentioned detachable member 80 does not necessarily need to be provided. For example, unlike in FIG. 10, if the bag-shaped blocking wall 70 is not fixed to the inner surface of the exterior body 20, the second detachable member 80B can be omitted. Similarly, unlike FIG. 10, if the left front part 81 and right front part 82 of the front body F of the interior body 10 are not firmly held in an overlapping state, the first detachable member 80A may also be omitted. can.

(others)
The blocking wall 70 is a wall surface that prevents body fluids of the wearer from moving toward the front side of the LD in the front-rear direction, and is formed by bending the front body F of the interior body 10 and expands toward the skin surface of the wearer. That part. Therefore, as shown in FIG. 9, even if the penis wrapping is not completed, just by folding only the left front part 81 of the front body F of the interior body 10, the left front part 81 has already become the blocking wall 70. It can be said.

<Explanation of terms in the specification>
When the following terms are used in the specification, unless otherwise specified in the specification, they have the following meanings.
・"Anteroposterior direction" means the direction indicated by the symbol LD in the figure (vertical direction), and "width direction" means the direction indicated by WD in the figure (horizontal direction), and the longitudinal direction and the width direction are orthogonal.
- "Unfolded state" means a state in which it is flattened without shrinkage or slack.
- "Elongation rate" means a value when the natural length is 100%. For example, an extension ratio of 200% is synonymous with an extension ratio of 2 times.
・“Basic weight” is measured as follows. After pre-drying the sample or test piece, it is left in a test room or apparatus under standard conditions (test location: temperature 23±1°C, relative humidity 50±2%) to reach a constant weight. Pre-drying refers to making the sample or test piece constant weight in an environment at a temperature of 100°C. Note that fibers with an official moisture content of 0.0% do not need to be pre-dried. From the test piece that has reached a constant weight, use a sample sampling template (100 mm x 100 mm) to cut out a sample with dimensions of 100 mm x 100 mm. Measure the weight of the sample, multiply by 100 to calculate the weight per square meter, and use it as the basis weight.
- "Water absorption" is measured according to JIS K7223-1996 "Water absorption test method for super absorbent resin".
・"Water absorption rate" is "time to end point" when JIS K7224-1996 "Water absorption rate test method for super absorbent resin" is performed using 2 g of super absorbent polymer and 50 g of physiological saline. shall be.
- Unless otherwise specified, the dimensions of each part refer to the dimensions in the unfolded state, not in the natural length state.

The present invention can be used in general absorbent articles, such as the pants-type disposable diaper as described above, as well as various types of disposable diapers such as tape-type and pad-type diapers. Moreover, it is not necessarily limited to absorbent articles for men. As shown in FIGS. 8 to 11, the main target is men when the penis wrapping is assumed, but it is also possible to form a blocking wall 70 as shown in FIGS. 12 to 14, so it can be used for both men and women. You can also do it.

10...Interior body, 11...Top sheet, 12...Back sheet, 13...Constricted portion, 14...Wrapping sheet, 15...Gathered sheet, 16...Gathered elastic member, 17...Absorbent body, 20...Exterior body, 20A...Pressure sheet , 20B...Back sheet, 20C...Folded portion, 21...Side seal portion, 23...Waist opening vicinity, 24...Waist elastic member, 25...Waist lower elastic member, 26...Dorsal curved elastic member, 28...Bentral curved elasticity Member, 26... Dorsal curved elastic member, 28... Ventral curved elastic member, 29... Leg circumference line, 50... Front cover sheet, 60... Rear cover sheet, 70... Blocking wall, 80... Detachable member, 80A... First Detachable member, 80B...Second detachable member, 81...Left front part, 82...Right front part, 83...Penile, B...Back body, BG...3D gathers, F...Front body, TC...Fixed part, TN...Non-fixed Part, TN...Non-fixed part, LD...Anteroposterior direction, FS...Front side, BS...Back side, WD...Width direction, LS...Left side, RS...Right side, HD...Thickness direction, TS...Inside (front side), ES...Outside (back side)

Claims (4)

an exterior body having a front body and a back body;
an interior body provided on the inner surface of the exterior body from the front body to the back body ,
The inner body has an absorber,
The interior body and the exterior body are folded at the center in the front-rear direction, which is the boundary between the front body and the back body, and both sides of the exterior body are joined to form a side seal portion, and a waist opening and A pair of left and right leg openings are formed,
The side seal portion is provided on the side of a portion of the exterior body that extends to both sides of the interior body in the width direction,
The waist opening is provided by an edge of a portion of the outer body that extends on both sides of the inner body in the front and back direction, and the waist opening is a pants-type disposable diaper,
The back body of the interior body is fixed to the back body of the exterior body with a hot melt adhesive ,
At least the front portion of the front body of the interior body is a detachable area that is removably fixed to the front body of the exterior body,
When worn, the attachment/detachment area of the front body of the inner body is peeled off from the front body of the exterior body to become a free part, and this free part is bent to form a blocking wall to prevent bodily fluid from leaking. An absorbent article characterized by comprising: The absorbent article is an absorbent article for men,
A first detachable member is provided on the back side of the front left part or the front right part of the detachable area,
When worn, the left front portion of the free portion is folded back toward the inner surface toward the right rear direction, and the right front portion of the free portion is folded back toward the inner surface toward the left rear direction,
The bag-shaped blocking wall is formed by overlapping the folded left front part and the right front part,
The wearer's penis is configured to be inserted into the bag-like blocking wall,
In a state where the left front part and the right front part are overlapped, the first detachable member is located between the left front part and the right front part,
The absorbent article according to claim 1 , wherein the front left portion and the front right portion are configured to be integrated by the first detachable member . A second detachable member is provided on the back surface of the front left portion and the front right portion that does not have the first detachable member;
When worn,
When the left front part and the right front part are overlapped, the first removable member is located between the left front part and the right front part, and the second removable member is located on the back side of the overlapped part. located on the side,
The left front part and the right front part are integrated by the first detachable member,
The left front part and the right front part that are integrated are folded forward so that the second detachable member faces the front body of the exterior body, and the second detachable member is attached to the front body of the exterior body. 3. The absorbent article of claim 2, wherein the absorbent article is configured to be joined. Detachable members are provided on the back surfaces of the front left end and the front right end of the removable area, respectively,
When worn,
While moving the front end of the free portion toward the rear, two valley fold lines extending substantially straight in the width direction are spaced apart from each other in the front and back direction of the free portion and are provided substantially parallel to each other. By fixing the front end of the free portion to the front body of the exterior body via the removable member in the state of valley folding at the position, a straight line is formed in the width direction between the two valley fold lines. The absorbent article according to claim 1, wherein the blocking wall is configured to have an extending mountain shape.

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