JP2013074961A - Underpants type absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an advantage such as improvement of wearability by forming a leg insertion part so that a leg is not caught by a three-dimensional gathers during wearing without increasing a manufacturing cost or time and labor on wearing.SOLUTION: A joint part 40 joined in a dotted state by thermally welding a section between an abdominal side part F and a back side part B of an exterior sheet 20 is configured to linearly extend toward two leg part openings 38, respectively, which exist from the side of a body part opening 36 to the side of a crotch part M.

Description

  The present invention particularly relates to a pants-type absorbent article with improved wearability.

Recently, as a measure for adult incontinence, a pants-type diaper, which is a pants-type absorbent article having a structure in which an absorber is disposed on an exterior sheet and urine is absorbed by the absorber, has been proposed. Many of conventional pants-type diapers 101 as shown in FIGS. 9 to 11 are provided with a three-dimensional gather 102 </ b> A at the end of the absorbent body 102 so as to suppress urine leakage during use.
On the other hand, when the wearer is an elderly person or the like, the movable range of the legs is narrow, and when the leg A is passed from the trunk opening 136 side of the pant-type diaper 101 to the leg opening 138 when worn as shown in FIG. Since the fingertip AU of the leg A may be caught by the three-dimensional gather 102A, there has been a demand for improvement in terms of wearability.

  On the other hand, in order to suppress the spread of the absorbent body in the lateral direction at the time of wearing, Patent Document 1 discloses a structure in which the absorptive main body 20 is provided with the separation parts 24 and 25 and the notch part 26a in FIG. It has been. According to this Patent Document 1, the lateral extension of the absorbent main body 20 is suppressed during wearing, so that it is easier to pass a leg than a normal pant-type diaper.

  Moreover, in patent document 2, the diameter of the circumference of the trunk | drum at the time of wear of a wearing article is not only larger than the diameter in the upper end of a pair of left and right leg openings, but also an extended portion as shown in FIG. 17 and the fastening part 14 and having a structure in which only the periphery of the leg is fastened with an adhesive tape, the convenience at the time of wearing is improved, and the extension part 17 and the fastening part 14 are used after wearing. A person is made to fit this wearing article.

JP 2010-162338 A JP 2003-79665 A

  However, in what was disclosed by patent document 1, as the absorptive main body 20 was provided with the separation parts 24 and 25 and the notch part 26a, the absorptive main body 20 became a complicated structure, and manufacturing cost increased. It was. Moreover, in what was disclosed by patent document 2, although the leg opening part made into a leg circumference part is expanded by stopping only the leg circumference with an adhesive tape afterwards, the extension part 17 and the fastening part Since 14 is used, an extra material is required and the manufacturing cost increases, and the trouble of stopping with an adhesive tape at the time of wearing increases.

  Therefore, the main problem of the present invention is to improve the wearability by forming a part through which the leg passes so that the leg is not caught by the three-dimensional gather at the time of wearing without increasing the manufacturing cost or increasing the labor at the time of wearing. Is to provide the technology.

The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
An exterior sheet having a ventral part, a dorsal part, and a crotch part located in the lower part between them;
An absorbent main body including an absorber and having a three-dimensional gather at the end;
With
Pants in which the exterior sheet is partially joined to provide a trunk opening at the top and two leg openings at the bottom, and the absorbent main body is fixed to at least the crotch portion on the inner surface side of the exterior sheet In mold-type absorbent articles,
Joining leaving the part connected from the trunk part opening to the two leg part openings, and joining the abdomen side part and the back side part of the exterior sheet from the trunk part opening side to the crotch part side A pants-type absorbent article characterized by having a part.

(Function and effect)
In this invention, the portion connecting from the trunk opening to the leg opening is left, and the joint portion joins the abdomen and back portions of the exterior sheet from the trunk opening to the crotch portion. When worn, the wearer's leg is reliably guided from the trunk opening to the leg opening along the joined portion.

  Therefore, according to the present invention, since the abdominal portion and the dorsal portion are simply joined at the joining portion from the trunk opening side to the crotch portion side, the absorbent main body has a complicated structure and the manufacturing cost is reduced. There is no increase in manufacturing cost due to the increase in the amount of extra material required or the use of adhesive tape to stop the leg periphery. Along with this, unlike Patent Documents 1 and 2 in which the absorbent body has a special structure or changes the shape of the worn article, it is easily applied to conventionally used pants-type absorbent articles. be able to.

  As described above, according to the present invention, the leg does not get caught in the three-dimensional gather arranged at the end of the absorbent main body at the time of wearing without increasing the manufacturing cost or the labor at the time of wearing. It will pass and wearability will be improved. On the other hand, if the joint is partially formed by heat welding or adhesive bonding, this joint is applied by a force that pushes between the abdomen and back by the lower body of the wearer during wearing. The part is easily displaced, and there is no problem in wearing.

<Invention of Claim 2>
The pants-type absorbent article according to claim 1, wherein the joint extends one linearly in accordance with only one of the two leg openings.

(Function and effect)
Since it is a structure where one joining part is extended on a straight line, the structure of a joining part becomes simpler and manufacturing cost is further reduced. In addition, when the pants-type absorbent article is worn, even if the wearer is an elderly person, if the wearer's leg passes through one leg opening, the other leg opening generally has a stable leg. Can be passed, so there are few problems.

<Invention of Claim 3>
The underpants-type absorbent article according to claim 1, wherein the joint portion extends in a straight line in accordance with the two leg opening portions.

(Function and effect)
Since the joints extend in two straight lines toward the two leg openings, the wearer's legs will not be caught by a solid gather, so both legs will pass smoothly and be worn more. Increases nature.

<Invention of Claim 4>
The joint portion extends from the trunk opening side toward the absorbent main body, and is divided into two parts at the absorbent main body portion to extend to the two leg opening portions, respectively. The underpants-type absorbent article according to 1.

(Function and effect)
Even if two joint portions are provided corresponding to the three-dimensional gathers arranged at the end of the absorbent main body, which is the minimum necessary portion, the wearability is surely increased.

<Invention of Claim 5>
The underpants type absorbent article according to any one of claims 1 to 4, wherein the joint portion joins the ventral portion and the dorsal portion in a dotted manner by heat welding.

(Function and effect)
Since the exterior sheet is welded in the form of dots by heat welding to form a joint portion, the joint portion is easily detached at the time of wearing. Therefore, the joint portion does not hinder wearing.

  As described above, according to the present invention, without increasing the manufacturing cost or increasing the labor at the time of wearing, the portion through which the leg is passed is formed so that the leg does not get caught in the three-dimensional gather at the time of wearing. And the like.

It is a front view of a pants type absorbent article. It is an assembly drawing in the unfolded state. It is a top view of the unfolding state of an exterior sheet. It is a top view of an absorptive main part. It is AA sectional drawing of FIG. It is a top view of the underpants type absorbent article of the 1st form. It is explanatory drawing when a wearer's leg is inserted in the underpants type absorbent article of a 1st form. It is a front view of the underpants type absorbent article of the 2nd form. It is a front view of the pants type absorbent article of a prior art. It is a top view of the pants type absorbent article of a prior art. It is a side view of the pants type absorbent article of a prior art. It is explanatory drawing when a wearer's leg is inserted in the underpants type absorbent article of a prior art.

Hereinafter, an embodiment of the present invention will be described first with respect to a common configuration, and then features of various embodiments will be described.
FIG. 1 is a product state appearance view of a pants-type absorbent article 1 according to the embodiment, and FIG. 2 is an assembly view in a developed state. This pant-type absorbent article 1 (hereinafter also simply referred to as an article) includes a cotton-like pulp between a liquid-permeable surface sheet 11 made of a nonwoven fabric or the like and a liquid-impermeable back sheet 12 made of polyethylene or the like. The absorbent main body 10 with the absorbent body 13 interposed therebetween and the exterior sheet 20 provided integrally with the outer surface side of the absorbent main body 10. When manufacturing, after the back surface of the absorbent main body 10 is integrated with the hot melt adhesive G or the like on the upper surface side (inner surface side) of the outer sheet 20, the absorbent main body 10 and the outer sheet 20 are folded in the front-rear direction. The body openings 36 that are waist openings and the leg openings 38 that are a pair of left and right leg openings are formed by overlapping and joining both sides thereof by heat welding or hot melt adhesive. The pants-type absorbent article 1 is obtained.

Hereinafter, the absorbent main body 10 and the exterior sheet 20 will be described in this order.
(Basic structure of absorbent body)
As shown in FIGS. 4 and 5, the absorbent main body 10 absorbs cotton pulp or the like between a liquid-permeable surface sheet 11 made of a nonwoven fabric or the like and a liquid-impermeable back sheet 12 made of polyethylene or the like. The body 13 is interposed and absorbs and retains body fluids.

  As the liquid-permeable surface sheet 11 that covers the surface side (skin contact surface side) of the absorbent body 13, a porous or non-porous nonwoven fabric or a porous plastic sheet is preferably used. The material fibers that make up the nonwoven fabric can be synthetic fibers such as olefins such as polyethylene or polypropylene, polyesters, and polyamides, recycled fibers such as rayon and cupra, and natural fibers such as cotton. A nonwoven fabric obtained by an appropriate processing method such as a spun bond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Among these processing methods, the spunlace method is excellent in terms of flexibility and drapeability, and the thermal bond method is excellent in terms of being bulky and soft. When a large number of through holes are formed in the liquid-permeable surface sheet 11, urine and the like are quickly absorbed, and the dry touch property is excellent. The liquid-permeable surface sheet 11 is wound around the side edge of the absorbent body 13 and extends to the back surface side of the absorbent body 13.

  As the liquid-impervious back sheet 12 that covers the back side (non-skin contact surface side) of the absorbent body 13, a liquid-impervious plastic sheet such as polyethylene or polypropylene is used. Those having the following are preferably used. This water-impervious / breathable sheet is a microporous sheet obtained by, for example, melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. If the sheet thickness is the same, the rigidity is lower than that of the non-porous sheet, which is superior in terms of flexibility.

  The absorber 13 is preferably formed by molding a fluffy pulp and a water-absorbing polymer. The water-absorbing polymer can be mixed in the pulp constituting the absorber, for example, as a granular powder. Pulp includes cellulose fibers such as chemical pulp and dissolved pulp obtained from wood, and artificial cellulose fibers such as rayon and acetate. Softwood pulp with a longer fiber length is more functional and price than hardwood pulp. It can use suitably in terms of. Of course, other known absorbers can also be used. Moreover, the absorber 13 is packaged by a liquid-permeable packaging sheet 14 such as crepe paper as necessary for retaining the shape and polymer. The shape of the absorber 13 can be a shape in which the width of the crotch portion is narrower than the back side and the abdominal side as shown in the drawing, or a rectangular shape.

On the other hand, it is preferable that a solid gather BS that fits around the legs is formed on both sides of the absorbent main body 10. This three-dimensional gathered BS is formed by the gathered nonwoven fabric 15. As the gathered nonwoven fabric, as shown in FIG. 5, a nonwoven fabric made into a double sheet by folding is preferably used, and is wound by the liquid-permeable surface sheet 11. The side edge portion of the absorbent body 13 is further rolled up from the upper side thereof and extends to the back surface side of the absorbent body 13 to be bonded. More specifically, the gathered nonwoven fabric 15 has a three-dimensional gather BS forming portion at the intermediate portion in the longitudinal direction of the absorbent article 1 and a range from the intermediate portion in the width direction to the back side of the absorbent body 13 is a hot melt adhesive or the like. In the longitudinal front and rear end portions, the section from the intermediate portion in the width direction to the one side end edge is bonded in the range extending to the back side of the absorber 13, and the portion forming the three-dimensional gather BS is absorbed by the absorber. While being folded at the upper surface portion of 13, it is bonded by a hot melt adhesive or the like.
However, instead of the three-dimensional gather BS having a structure using a non-woven fabric made into a double sheet by folding, the three-dimensional gather BS may have a structure without folding.

  Inside the gathered nonwoven fabric 15 formed of a double sheet nonwoven fabric, a plurality of thread-like elastic elastic members 16, 16... The thread-like elastic elastic members 16, 16,... Are for forming a three-dimensional gather BS by raising the nonwoven fabric portion protruding from the absorber side edge portion by elastic elastic force in the product state.

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

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

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

(Structure of exterior sheet)
As shown in FIGS. 2 and 3, the exterior sheet 20 is a non-woven sheet having a two-layer structure including an upper layer nonwoven fabric 20A and a lower layer nonwoven fabric 20B, and various elastic members are arranged between the upper layer nonwoven fabric 20A and the lower layer nonwoven fabric 20B. It is provided and has elasticity. The planar shape has a pseudo hourglass shape as a whole by the concave leg-around cut lines 29 formed to form the leg openings 38 on both sides of the middle.

  In particular, in the exterior sheet 20 of the illustrated embodiment, as elastic members, in the developed shape shown in FIG. 3, waist elastic members 24, 24... The portion B has a plurality of waist elastic members 25, 25,... Arranged in the horizontal direction at intervals in the vertical direction, and the waist around the ventral portion F and the back portion B, respectively. Aside from the elastic member groups 25, 25..., The other side of the abdominal part and the dorsal part extends from the one side joining edge joining the ventral part F and the dorsal part B to the crotch side, bypassing the crotch side. A plurality of curved elastic member groups 26, 28,..., Which reach the side joining edge and are arranged at intervals without crossing each other. In addition, in this exterior sheet | seat 20, what is called a leg periphery elastic member substantially continuous along the leg periphery cut line 29 is not provided.

  The waist elastic members 24, 24... Are disposed in the vicinity of the waist opening edge in the vicinity of the waist opening edge within the range of the side joint edges 21, 22 where the abdominal part F and the back part B are joined. These are a plurality of thread rubber-like elastic members that are used to attach the absorbent article to the body by applying a stretching force so as to tighten around the waist of the body. For the waist elastic member 24, rubber thread is used in the illustrated example. However, for example, a tape-like elastic member may be used.

  The waist elastic member groups 25, 25... Are elastic rubber members arranged in the horizontal direction at intervals in the vertical direction over the range from the upper part to the lower part of the side joint edges 21, 22. This is an elastic member for applying a horizontal expansion / contraction force to the waist part of the abdominal part F and the back part B, respectively, to bring the absorbent article into close contact with the body. Note that the boundary between the waist elastic members 24, 24... And the waist elastic members 25, 25. For example, even if the number of the elastic members arranged horizontally in the vertical direction on the ventral portion F and the dorsal portion B cannot be specified, some on the upper side are used as the waist elastic members. It suffices that the remaining elastic members function as waist elastic members.

  In the dorsal portion B, the dorsal curved elastic member groups 26, 26... Arranged separately from the waist elastic member groups 25, 25. A plurality of lines arranged along a curve that reaches the crotch portion along the line 29 and reaches the other side side joint edge 22 while being substantially along the leg leg cutting line 29 on the other side after crossing the crotch portion, In the illustrated example, there are nine thread rubber-like elastic members, and these back-side curved elastic member groups 26, 26... Are arranged at intervals without crossing each other. The dorsal curved elastic member groups 26, 26,... Are arranged so as to form a predetermined expansion / contraction zone, instead of arranging a few elastic expansion / contraction members at a close interval and substantially as one bundle. Five or more, preferably seven or more are arranged at a predetermined interval.

  In the ventral portion F of the exterior sheet 20, ventral curved elastic member groups 28, 28... Arranged separately from the waist elastic member groups 25, 25. Nine thread-like elastic members in the illustrated example, which are arranged at intervals without crossing with the curved line (which reaches the inseam side and crosses the crotch and then reaches the other side joining edge 21) These ventral curved elastic member groups 28, 28... Are arranged at intervals without crossing each other. The ventral curved elastic member groups 28, 28... Are also arranged so as to form a predetermined expansion / contraction zone, instead of arranging a few elastic expansion / contraction members at a close interval and substantially as one bundle. Five or more, preferably seven or more are arranged at a predetermined interval.

  Moreover, in the said form example, the waist elastic member group 25,25 ... and curved elastic member 26 ..., 28 ... arrange | positioned at the abdominal part F and the back part B cut | disconnect the part which crosses the absorptive main body 10. FIG. Although it is discontinuous, it can also be arranged continuously on the absorbent main body 10. By making the elastic member discontinuous on the absorbent main body, the absorber 13 can be further prevented from being contracted.

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

(First form)
Characteristically, as shown in FIG. 1, the joint portion 40 joined in a dot-like manner between the abdominal portion F and the back portion B of the exterior sheet 20 by thermal welding is formed from the trunk opening 36 side. Two straight lines extend toward the two leg openings 38 existing on the inseam portion M side. In this embodiment, the joint portion 40 is thus joined to the two leg openings 38 from the trunk opening 36 by partially joining the ventral portion F and the back portion B of the exterior sheet 20. The pants-type absorbent article 1 is formed in a form that leaves a portion through which the wearer's leg passes.

  Accordingly, when the pant-type absorbent article 1 is viewed from above as shown in FIG. 6, only the two leg openings 38 can be visually recognized, so that the fingertip AU of the wearer's leg A when worn as shown in FIG. However, it is guided along the arrow S along the joint portion 40 that joins the ventral portion F and the back portion B, so that the leg is not caught by the three-dimensional gather BS of the absorbent main body 10. At this time, in this embodiment, since the joint portion 40 has a structure in which two joints 40 extend obliquely linearly toward the two leg opening portions 38 from the trunk portion opening 36 side, the joint portion 40 allows the two legs to be connected. Each of the legs is inserted while being guided, so that the wearer's legs are surely not caught by the three-dimensional gather BS, so that the wearability of the legs is improved.

  In addition, it is good also as a structure where the junction part 40 extends linearly toward only one of the two leg part openings 38. With such a structure, the structure of the joint 40 becomes simpler and the manufacturing cost of the pant-type absorbent article 1 is further reduced. Further, when the pants-type absorbent article 1 is worn in this case, even if the wearer is an elderly person, if the wearer's leg passes through one leg opening 38, the other leg opening 38 is generally used. In addition, since the leg can be stably passed, there are few problems.

  Further, since the abdomen portion F and the dorsal portion B are simply joined at the joint portion 40, the absorbent main body 10 has a complicated structure, resulting in an increase in manufacturing cost, or a portion around the leg with adhesive tape. As the operation is stopped, extra materials are required and the manufacturing cost is not increased, and the labor for wearing is not increased.

  As mentioned above, according to this form, a leg does not get caught in solid gather BS arrange | positioned at the edge part of the absorptive main body 10 at the time of wear, without increasing a manufacturing cost or increasing the effort at the time of wear. Legs will pass and wearability will be improved.

  On the other hand, since the joint portion 40 is partially bonded in a dot-like manner by heat welding, only a force is applied to spread between the ventral portion F and the back portion B by the lower body of the wearer at the time of wearing. 40 will be easily deviated and will not be hindered by the joint 40. At this time, since the non-woven fabric is welded to the joint portion 40, the welded portion escapes from the wearer's body as it is stretched, and may directly contact the wearer's body. Absent.

(Second form)
In the first embodiment, two joint portions 40 extend linearly from the trunk opening 36 side toward the two leg openings 38 existing on the crotch portion M side. 8, the joint 40 extends vertically from the trunk opening 36 toward the absorbent main body 10. The joint 40 is divided into two parts at the absorbent main body 10, and the joint 40 has two leg openings. 38, each extending toward 38.

  Therefore, as in this embodiment, even if the joint portion 40 is provided along the three-dimensional gather BS arranged at the end portion of the absorbent main body 10 which is the minimum necessary portion, the wearability is surely increased. Become. At this time, the joint portion 40 may be configured to join the abdomen side portion F and the back side portion B of the exterior sheet 20 that is the outside of the absorbent main body 10, and the end portion of the absorbent main body 10. Along the absorbent main body 10.

  In each of the above embodiments, the joint portion 40 has a shape that is partially adhered in a spot shape by heat welding, but may be adhered by an adhesive, may be adhered by an ultrasonic wave, a needle, or the like, and is worn. If it peels easily at times, the joint 40 may be formed in a straight line instead of in a dot shape, or in a curved shape that allows the wearer's leg to pass more easily.

  Furthermore, in the said form, although the exterior sheet 20 is made into the nonwoven fabric sheet of the 2 layer structure which consists of 20 A of upper layer nonwoven fabrics, and the lower layer nonwoven fabric 20B, it is made into the inside and the composition of the upper layer nonwoven fabric 20A which touches a wearer's body. It is conceivable that the composition of the lower layer nonwoven fabric 20B that does not touch the wearer's body is made different in order to make a difference in melting point. By doing in this way, at the time of heat welding, only the upper layer nonwoven fabric 20A can be adhered, and the lower layer nonwoven fabric 20B can be prevented from being welded, and accordingly, the lower layer nonwoven fabric 20B does not have a hole. , The appearance is improved. Specifically, it is conceivable to use a nonwoven fabric in which polyethylene and polypropylene are mixed (PE / PP) as the upper layer nonwoven fabric 20A, and use a nonwoven fabric made of polypropylene (PP) alone as the lower layer nonwoven fabric 20B.

On the other hand, when the pant-type absorbent article 1 of each aspect described above is viewed from above, only the two leg openings 38 can be visually recognized, and the three-dimensional gather BS is not covered with legs, but around the two leg openings 38 By coloring, visibility is further improved and wearability is further increased.
Furthermore, by adjusting the joint strength of the joint part in each of the above embodiments, the joint part is peeled off when the pant-type absorbent article is worn, but the part between the ventral part and the back part is pulled. Alternatively, the joint portion may be peeled off.

  The present invention can be applied to a pants-type absorbent article.

  DESCRIPTION OF SYMBOLS 1 ... Absorbent article, 10 ... Absorbent main body, 11 ... Liquid-permeable surface sheet, 12 ... Impervious back sheet, 13 ... Absorber, 14 ... Crepe paper, 15 ... Gathered nonwoven fabric, 16 ... Yarn elastic elastic member , 20 ... exterior sheet, 29 ... leg circumference cut line, 36 ... trunk opening, 38 ... leg opening, 40 ... joint, F ... ventral part, B ... dorsal part, BS ... solid gather, M ... inseam Side part.

Claims (5)

An exterior sheet having a ventral part, a dorsal part, and a crotch part located in the lower part between them;
An absorbent main body including an absorber and having a three-dimensional gather at the end;
With
Pants in which the exterior sheet is partially joined to provide a trunk opening at the top and two leg openings at the bottom, and the absorbent main body is fixed to at least the crotch portion on the inner surface side of the exterior sheet In mold-type absorbent articles,
Joining leaving the part connected from the trunk part opening to the two leg part openings, and joining the abdomen side part and the back side part of the exterior sheet from the trunk part opening side to the crotch part side A pants-type absorbent article characterized by having a part.   The pants-type absorbent article according to claim 1, wherein the joint extends one linearly in accordance with only one of the two leg openings.   The underpants-type absorbent article according to claim 1, wherein the joint portion extends in a straight line in accordance with the two leg opening portions.   The joint portion extends from the trunk opening side toward the absorbent main body, and is divided into two parts at the absorbent main body portion to extend to the two leg opening portions, respectively. The underpants-type absorbent article according to 1.   The underpants type absorbent article according to any one of claims 1 to 4, wherein the joint portion joins the ventral portion and the dorsal portion in a dotted manner by heat welding.