JP2010046303A - Underpants type absorbent article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an absorbent article in which a front opening part in a slit shape provided on the abdominal side part of the underpants type absorbent article does not open by weight of absorbed urine and an absorber does not get twisted nor split after urination. <P>SOLUTION: The underpants type absorbent article 1 is provided with an exterior sheet 20 having an abdominal side part, a back side part, and a crotch part and an absorbent body 10 including an absorber, where the absorbent body is fixed inside the exterior sheet at least within a range from the crotch part to the abdominal part. The article 1 has a front opening part 20p which links outside and inside at the abdominal side part where the exterior sheet and the absorbent body are separate and opens in the vertical direction. The article 1 disposes a plurality of front opening prevention elastic members 23 mutually separate which pass a lower part of the front opening part from an upper end part of the abdominal side part and extend to the other upper end part of the abdominal side part. A mountain-shaped embossment 17 going from an end part in the longitudinal direction of the absorber body to a central part is formed at a part opposite to the front opening part of the absorber body. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a pant-type absorbent article particularly suitable for light incontinence for men.

Recently, as suitable for light incontinence for men, as shown in Patent Document 1, a pants-type absorbent article having a slit-like front opening along the width direction in front of the front end portion of the absorbent body in the exterior sheet Has been proposed.
However, in this conventional pant-type absorbent article, when urination is performed in the pant-type absorbent article, the crotch part of the pant-type absorbent article falls downward due to the weight of urine absorbed by the absorbent body, and the slit The problem arises that the front opening of the shape is opened.
Moreover, if the slit-shaped front opening part is repeatedly opened and urination is performed, the absorbent body of the pant-type absorbent article may be bent and cracked, and the wearing feeling may be deteriorated. If it occurs, urinated urine may leak out of the pant-type absorbent article.
JP 2007-330543 A

  Therefore, the problem of the present invention is that even when urination is performed in a pant-type absorbent article, the slit-shaped front opening provided on the abdominal side of the pant-type absorbent article is absorbed by the absorbent body. Pants that do not cause twisting or cracking in the absorbent body of the pant-type absorbent article even when the slit-shaped front opening is repeatedly opened and urination is performed without being opened by the weight of the urine It is to provide an absorbent article.

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 positioned therebetween, and an absorbent main body including an absorbent body, and extending from at least the crotch part to the ventral part on the inner surface side of the exterior sheet In the pants-type absorbent article in which the absorbent main body is fixed in a range,
The ventral portion of the exterior sheet spaced apart from the absorbent main body has a front opening that communicates with the inside and outside and opens in the vertical direction.
A plurality of front opening preventing elastic members spaced from each other and extending from the upper end of the ventral portion to the lower end of the front opening and extending to the other upper end of the ventral portion;
A pant-type absorbent article, wherein a chevron-shaped emboss from the longitudinal end of the absorbent body toward the center is formed at a portion of the absorbent body facing the front opening.

(Function and effect)
Even if it is a wearer who has an obstacle in an arm or a fingertip, it has a front opening portion that communicates with the inside and outside and opens in the vertical direction on the abdominal side of the exterior sheet that is separated from the absorbent main body. The front opening part can be opened, and when urination is performed, the penis can be easily passed through the front opening part.
Since it has a plurality of mutually spaced apart elastic members for preventing the front opening extending from the upper end of the ventral part to the other upper end of the ventral part through the lower part of the front opening part, the pant-type absorption Even when urination is performed in the absorbent article and the crotch part is lowered due to the weight of the urine absorbed by the absorbent body, the front opening is caused by the elastic force of the plurality of front opening preventing elastic members spaced from each other. The lower part of the part is lifted upward, and the aesthetic appearance and good wearing feeling can be maintained without opening the front opening part.
Since the chevron-shaped embossing from the longitudinal end of the absorber body toward the center is formed in the part facing the front opening part of the absorber body, urination is performed by repeatedly passing the penis through the front opening part. Even in this case, generation of wrinkles and cracks in the absorbent body (absorber) can be suppressed.
That is, when the front opening part is opened downward and opened, the separated end of the absorber main body (absorber) that is separated from the front opening part has an angled bent portion similar to the opening shape of the front opening part. appear. Therefore, by forming a chevron-shaped emboss on the absorber main body (absorber) in advance, the absorber main body (absorber) is easily deformed when the front opening portion is opened, and the opening of the front opening portion is repeatedly performed. Even if it exists, generation | occurrence | production of a wrinkle and cracking in an absorber main body (absorber) can be reduced.

<Invention of Claim 2>
The thickness of the part surrounded by the chevron-shaped emboss from the longitudinal direction end of the absorbent body is 20 to 40% with respect to the thickness of the remaining part of the absorbent body. Pants-type absorbent article.

(Function and effect)
Since the thickness of the portion surrounded by the chevron-shaped emboss from the longitudinal end of the absorber body is 20 to 40% with respect to the thickness of the remaining absorber body portion, the opening of the front opening portion Even when the absorbent body (absorber) is easily deformed and the front opening is repeatedly opened, the occurrence of wrinkles and cracks can be further suppressed in the absorbent body (absorber).
If the thickness of the portion surrounded by the chevron-shaped emboss from the longitudinal end of the absorber body is 20% or less with respect to the thickness of the remaining absorber body portion, the absorber body The absorptive power at the longitudinal end portion of the is reduced. Further, in the case of 40% or more, the rigidity is increased and the deformation cannot be easily performed.

<Invention of Claim 3>
An exterior sheet having a ventral part, a dorsal part, and a crotch part positioned therebetween, and an absorbent main body including an absorbent body, and extending from at least the crotch part to the ventral part on the inner surface side of the exterior sheet In the pants-type absorbent article in which the absorbent main body is fixed in a range,
The ventral portion of the exterior sheet spaced apart from the absorbent main body has a front opening that communicates with the inside and outside and opens in the vertical direction.
A plurality of front opening preventing elastic members spaced from each other and extending from the upper end of the ventral portion to the lower end of the front opening and extending to the other upper end of the ventral portion;
A pant-type absorbent article, characterized in that a chevron-shaped notch extending from the longitudinal end of the absorbent body toward the center is formed at a portion of the absorbent body facing the front opening.

(Function and effect)
Even if it is a wearer who has an obstacle in an arm or a fingertip, it has a front opening portion that communicates with the inside and outside and opens in the vertical direction on the abdominal side of the exterior sheet that is separated from the absorbent main body. The front opening part can be opened, and when urination is performed, the penis can be easily passed through the front opening part.
Since it has a plurality of mutually spaced apart elastic members for preventing the front opening extending from the upper end of the ventral part to the other upper end of the ventral part through the lower part of the front opening part, the pant-type absorption Even when urination is performed in the absorbent article and the crotch part is lowered due to the weight of the urine absorbed by the absorbent body, the front opening is caused by the elastic force of the plurality of front opening preventing elastic members spaced from each other. The lower part of the part is lifted upward, and the aesthetic appearance and good wearing feeling can be maintained without opening the front opening part.
In the part facing the front opening part of the absorbent body, a chevron-shaped notch is formed from the longitudinal end of the absorbent body toward the center part, so urination is repeated through the penis through the front opening part. Even if it is performed, it is possible to maintain a good wearing feeling for a long time without suppressing the occurrence of wrinkles and cracks in the absorbent body (absorber).

<Invention of Claim 4>
The pant-type absorbent article has a waist elastic member, a waist elastic member, and a ventral dorsal curve elastic member, and one end of the front opening preventing elastic member intersects the waist elastic member, The pants-type absorbent article according to claim 1 or 3, wherein the other end portion of the front opening preventing elastic member intersects the waist elastic member.

(Function and effect)
The pant-type absorbent article has a waist elastic member, a waist elastic member, and a ventral dorsal curved elastic member, and one end of the front opening preventing elastic member intersects the waist elastic member to prevent the front opening. When the other end of the elastic member intersects the waist elastic member, urination is performed in the pant-type absorbent article, and the crotch part is lowered downward due to the weight of the urine absorbed by the absorbent body Even in this case, the lower part of the front opening part is lifted upward by the stretching force of the plurality of front opening preventing elastic members separated from each other, and the front opening part does not open, and the appearance is good and the wear is good A feeling can be maintained.
Further, even if the front opening portion is opened, by further raising the waist elastic member of the pant-type absorbent article, further elastic force is generated in the front opening preventing elastic member. The lower part of the opening part is lifted upward, and the aesthetic appearance and good wearing feeling can be maintained without opening the front opening part.

<Invention of Claim 5>
The front opening portion extends from the center in the width direction of the pant-type absorbent article toward both sides in the width direction, and the length in the width direction of the front opening portion is the length in the width direction of the absorbent main body. On the other hand, it is 60%-90%, The pants type absorbent article of any one of Claims 1-4.

(Function and effect)
The front opening portion extends from the center in the width direction of the pant-type absorbent article toward both sides in the width direction, and the width direction length of the front opening portion is 60% with respect to the width direction length of the absorbent main body. Since it is -90%, the penis can be easily inserted into the opening of the front opening.
In addition, when the width direction length of the front opening part is 60% or less with respect to the width direction length of the absorbent main body, a wearer who has a small opening part of the front opening part and has an obstacle on the arm or fingertip The penis cannot be easily inserted through the opening of the front opening. In the case of 90% or more, urination is performed in the pant-type absorbent article, and the front opening may be opened when the crotch part is lowered due to the weight of the urine absorbed in the absorbent body. There is.

<Invention of Claim 6>
The said front opening part is formed in the said abdominal part spaced apart 20-40 mm from the longitudinal direction edge part of the said absorptive main body, and is parallel to a waist elastic member. Pants-type absorbent article.

(Function and effect)
Since the front opening part is formed in parallel with the waist elastic member at the abdominal side part spaced 20 to 40 mm away from the longitudinal end of the absorbent main body, the penis is inserted into the opening of the front opening part Etc. can be easily performed and the waist elastic member is not cut, so that it is possible to maintain a feeling of wearing, particularly high fit.
When the distance between the front opening portion and the longitudinal end portion of the absorbent main body is 20 mm or less, the front opening portion and the absorbent main body cushion each other, so opening of the front opening portion becomes difficult. Moreover, in the case of 40 mm or more, it becomes difficult to insert the penis.

  As described above, according to the present invention, the front opening portion of the pant-type absorbent article is not opened by the weight of the urine absorbed by the absorber, and the pants-type that does not cause twisting or cracking in the absorber. Absorbent articles can be provided.

The first embodiment of the present invention will be described below.
FIG. 1 is a perspective view of a pant-type absorbent article according to the first embodiment, and FIG. 2 is an assembly view in the same unfolded state.

The pants-type absorbent article 1 has an absorptivity in which an absorbent body 13 such as cotton pulp is interposed between a liquid-permeable surface sheet 11 made of nonwoven fabric or the like and a liquid-impermeable back sheet 12 made of polyethylene or the like. The main body 10 and the exterior sheet 20 provided integrally with the outer surface side of the absorbent main body 10 are included.
In manufacturing, after the back surface of the absorbent main body 10 is integrated with the inner surface side of the exterior sheet 20 by a hot melt adhesive or the like, the absorbent main body 10 and the exterior sheet 20 are folded in the front-rear direction. By joining the parts 21 and 22 with each other by heat welding or hot melt adhesive, a pant-type absorbent article having a waist opening and a pair of left and right leg openings is formed.

(Basic structure of absorbent body)
FIG. 3 is a plan view of the absorbent main body according to the first embodiment, and FIG. 4 is a cross-sectional view taken along the line AA in FIG.
FIG. 5 is a sectional view taken along the line BB.
As shown in FIG. 3, the absorbent main body 10 includes an absorbent body 13 such as 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. It has an intervening structure and absorbs and retains body fluids.
Further, a chevron-shaped emboss 17 is formed on the ventral side of the absorbent main body 10 facing the front opening 20p of the exterior sheet 20 from the ventral end of the absorbent main body 10 toward the central portion. Even when the penis is repeatedly passed through the front opening part 20p and urination is performed, generation of wrinkles and cracks in the absorbent body 1 (absorbent body 13) can be suppressed.
The chevron-shaped emboss 17 can be arbitrarily formed by adjusting the processing pressure or the like of a pair of pressure rollers and a flat plate that form a fit emboss.
Moreover, although the chevron-shaped emboss is shown in FIG. 3, it can also be a triangular emboss or a trapezoidal emboss.

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. It can use suitably in terms of.
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.

As shown in FIG. 4, the absorbent main body 10 is formed such that the thin portion 18 surrounded by the chevron-shaped emboss 17 has a thickness of about 2 mm, and the remaining absorbent main body 10 has a thickness of about 8 mm. That is, the amount of fluffy pulp and water-absorbing polymer used for the thin portion 18 is set to about 25% of the amount of fluffy pulp and water-absorbing polymer used for the remaining absorbent body 10, and the thin portion 18 is molded. ing.
Further, when the front opening portion is opened, the absorber body is easily deformed, and when the opening of the front opening portion is repeatedly performed, the thin portion 18 is used from the viewpoint of further suppressing the generation of wrinkles and cracks in the absorber body (absorber). It is preferable to make the thickness of 20 to 40% of the thickness of the remaining absorber body 10.
In addition, when the thickness of the thin part 18 is 20% or less, the absorptive power in the longitudinal direction edge part of the absorber main body 10 falls. Further, when the thickness of the thin portion 18 is 40% or more, the rigidity is increased and the deformation cannot be easily performed.

  As shown in FIG. 5, it is preferable that solid gather BSs that fit around the legs are formed on both sides of the absorbent main body 10. This three-dimensional gathered BS is formed by the gathered nonwoven fabric 15, and as the gathered nonwoven fabric, a nonwoven fabric made into a double sheet by folding is preferably used, and the side edge of the absorbent body 13 entrapped by the liquid-permeable surface sheet 11 is used. Furthermore, it winds up from the upper side, extends to the back surface side of the absorber 13, and is 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.

  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 stretch members 16, 16,... Are for forming a three-dimensional gather BS by raising the nonwoven fabric portion protruding from the absorber side edge by elastic stretch force, as indicated by a two-dot chain line in the product state.

  The liquid-impermeable back sheet 12 enters the double sheet-like gathered nonwoven fabric 15 and constitutes a leak-proof wall on the lower end side of the three-dimensional gathered BS. 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)
6 is a plan view of the outer surface side in the unfolded state according to the first embodiment, FIG. 7 is a plan view of the inner surface side in the unfolded state, and FIG. 8 is a cross-sectional view taken along line AA in FIG.
As shown in FIGS. 6 and 7, the exterior sheet 20 is a two-layer nonwoven fabric sheet composed of an upper nonwoven fabric 20A and a lower nonwoven fabric 20B, and various elastic members are disposed between the upper nonwoven fabric 20A and the lower nonwoven fabric 20B. The elasticity is given. The planar shape has a pseudo hourglass shape as a whole by the concave leg periphery cut lines 29 formed to form the leg openings on the both sides of the middle.

  In particular, in the exterior sheet 20, as elastic members, in the developed shape, waist portion elastic members 24, 24... Disposed around the waist opening portion 27 and the lower portion of the front opening portion 20 p from the one side waist opening portion 27. A plurality of front opening preventing elastic members 23, 23..., Extending around the front opening portion 20 p, reaching the other side waist opening 27, and arranged at intervals without crossing each other, In the ventral part F and the back part B, a plurality of waist elastic members 25, 25... Arranged in the horizontal direction at intervals in the vertical direction, and in the ventral part F and the back part B, respectively. , Apart from the waist elastic members 25, 25... Extend from the one side joining edge joining the ventral part F and the dorsal part B to the crotch side, bypass the crotch side, and ventral part and dorsal part On the other side joint edge with Together reached, a plurality of curved elastic members 26, 26 which are spaced without intersecting each other ..., and a 28 .... 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 front opening preventing elastic members 23, 23... Intersect with the waist elastic members 24, 24. It extends to the lower part of the part 20p, bypasses the front opening part 20p, and the other end intersects with the waist elastic members 24, 24. A plurality of thread rubber-like elastic members arranged, when urination is performed in the pant-type absorbent article, and when the crotch part is lowered by the weight of the urine absorbed by the absorbent body, the front opening part 20p The lower part is lifted upward, and the front opening part 20p prevents the opening and maintains the aesthetic appearance and good wearing feeling.
The waist elastic members 24, 24... Are not arranged substantially as a single bundle with a close interval between about two or three elastic elastic members, but are predetermined so as to form a predetermined elastic zone. 3 or more, preferably 5 or more are arranged with an interval of.

  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 an expansion / contraction force so as to tighten around the waist of the body. As the waist elastic member 24, thread rubber is used in the illustrated example, but a tape-like elastic member may be used, for example.

  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 not arranged substantially as a single bundle with a close interval between the two or three elastic elastic members, but form a predetermined elastic zone. 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 not substantially arranged as a single bundle with a close interval between the two or three elastic elastic members, but form a predetermined elastic zone. Five or more, preferably seven or more are arranged at a predetermined interval.

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

Next, a method for attaching the front opening preventing elastic member 23 to the exterior sheet 20 will be described with reference to FIG.
As described above, the exterior sheet 20 is a nonwoven fabric sheet having a two-layer structure of an upper layer nonwoven fabric 20A and a lower layer nonwoven fabric 20B.
A plurality of front opening preventing elastic members 23 are supplied to the production line in parallel with the production line direction of the lower layer nonwoven fabric 20B. The plurality of supplied front opening preventing elastic members 23 are inserted into the swinging device 40 that is movable in the direction perpendicular to the production line direction before being attached to the lower layer nonwoven fabric 20B.
The swinging device repeats periodic swinging for each pant-type absorbent article that is continuously manufactured before cutting.
Thereby, the plurality of front opening preventing elastic members 23 are attached in parallel around the waist opening of the lower layer nonwoven fabric 20B of each pant-type absorbent article as shown in FIG. And then attached in parallel around the waist opening and sandwiched between the lower layer nonwoven fabric 20B and the upper layer nonwoven fabric 20A.

The front opening preventing elastic member 23 is attached to the outside of the waist elastic member 24 around the waist opening, and the front opening preventing elastic member 23 is crossed with the waist elastic member 24, so that the pants type is worn. The lifting effect of the absorbent body 10 of the absorbent article can be enhanced, which is preferable.
Further, when the number of the front opening preventing elastic members 23 is large, there may be a case where the front opening preventing elastic member 23 located on the inner side is disposed on the absorber body 10. It is preferable to cut the mountain top of the front opening preventing elastic member 23 located inside by a rotary cutter or the like (not shown) because the absorber body 10 can be prevented from shrinking in the width direction.

  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.

As shown in FIGS. 6 and 7, the front opening 20p is formed on the abdominal side of the exterior sheet 20 30 mm away from the longitudinal end of the absorbent main body 10 in parallel with the waist elastic members 25, 25. is doing. The front opening part 20p consists of a slit formed in parallel with the waist elastic members 25, 25... And opens when the wearer urinates by inserting a finger into the slit and lowering it downward. Thus, the penis can be easily pulled out from the opening of the front opening portion 20p.
Moreover, the front opening part 20p is extended in the width direction both ends from the width direction centerline part of the pants type absorbent article 1, the width direction length of the front opening part 20p is 100 cm, and the width direction of the absorbent main body 10 It is a slit shorter than 120 cm in length. In addition, the shape of the slit can be appropriately determined in addition to a linear shape, such as a triangular wave shape, a rectangular wave shape, a sine wave shape, and an arc shape.

  The length in the width direction of the front opening 20p is not particularly limited, but is preferably 60 to 90% with respect to the length in the width direction of the absorbent main body 10. When the length in the width direction of the front opening portion 20p is 60% or less with respect to the length in the width direction of the absorbent main body 10, the wearer who has an obstacle in the arm or fingertip is easily opened in the front opening portion 20p. In the case of 90% or more, urination is performed with the pant-type absorbent article 1, and the crotch portion is lowered by the weight of the urine absorbed by the absorbent body 13 There is a possibility that the front opening 20p will open when it falls down.

  The formation position of the front opening 20p is not particularly limited, but when the front opening 20p is 20 mm or less from the longitudinal end of the absorbent main body 10, the front opening 20p and the absorbent main body 10 are formed. , The opening of the front opening 20p is difficult, and when it is 40 mm or more, penis insertion or the like may be difficult.

  As shown in FIG. 8, the exterior sheet 20 has a fixed portion 31 that is fixed by being sandwiched between portions formed by double folding the exterior sheet 20 from the outer surface side to the inner surface side at the waist opening edge, It is possible to provide a front and rear leakage prevention sheet 30 having a non-fixed portion 32 that extends to a position covering the front end portion of the absorbent main body 10 and is movable with respect to the fixed portion 31.

Hereinafter, a second embodiment of the present invention will be described. The same members as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.
FIG. 9 is a plan view of the absorbent main body according to the second embodiment, FIG. 10 is a cross-sectional view taken along the line AA, and FIG. 11 is a cross-sectional view taken along the line BB.

As shown in FIGS. 9 and 10, the absorbent main body 10 includes an absorbent body such as 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. 33 is interposed, and absorbs and retains body fluids.
A chevron-shaped notch 19 is formed on the ventral side of the absorbent body 33 facing the front opening 20p of the exterior sheet 20 of the absorbent main body 10 from the ventral end of the absorbent body 33 toward the central portion. Even when the urination is repeated by passing the penis through the front opening part 20p, the absorbent body 1 (absorbent body 33) does not suppress wrinkles and cracks and has a good wearing feeling. Can be maintained over time.
The chevron-shaped notch 19 can be arbitrarily formed by a pair of cutting rollers, a flat plate, or the like after a rectangular absorbent body is formed.
Further, in FIG. 9, the chevron-shaped notch is illustrated, but it may be a triangular notch or a trapezoidal notch.

  The absorbent body 33 is preferably formed by molding a fluffy pulp and a water-absorbing polymer in the same manner as the absorbent body 13 of the first embodiment, and if necessary, by the liquid-permeable packaging sheet 14 such as crepe paper. It is packaged.

  As shown in FIG. 11, it is preferable that solid gather BSs that fit around the legs are formed on both sides of the absorbent main body 10, and thread-like elastic elastic members 16, 16. As shown by a two-dot chain line in the product state, the non-woven fabric portion protruding from the absorber side edge portion is raised by elastic stretching force to form a three-dimensional gather BS.

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

It is a perspective view of the underpants type absorbent article of a 1st embodiment. It is an assembly drawing in the same unfolded state. It is a top view of absorptive main part 10 of a 1st embodiment. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is an outer surface side top view of the unfolded state of a 1st embodiment. It is an inner surface side top view of the same unfolding state. It is AA sectional drawing of FIG. It is a top view of the absorptive main body 10 of 2nd Embodiment. It is an AA arrow line view of FIG. It is BB sectional drawing of FIG. It is explanatory drawing of the attachment method of the elastic member for front opening prevention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Absorbent article, 10 ... Absorbent main body, 11 ... Liquid-permeable surface sheet, 12 ... Liquid-impermeable back sheet, 13, 33 ... Absorber, 14 ... Crepe paper, 15 ... Gathered nonwoven fabric, 16 ... String-like elasticity Stretchable member, 17 ... chevron-shaped emboss, 18 ... thin part, 19 ... chevron-shaped notch, 20 ... exterior sheet, 20p ... front opening part, 21, 22 ... side joint edge, 23 ... elastic member for preventing front opening, 24 ... waist elastic member, 25 ... waist elastic member, 26 ... dorsal curved elastic member, 27 ... around waist opening, 28 ... ventral curved elastic member, 29 ... leg circumference cut line, 30 ... front and rear leakage prevention sheet , 31, 32... Fixed portion, 40... Swinging device, F .. ventral portion, B .. back portion, G.

Claims (6)

An exterior sheet having a ventral part, a dorsal part, and a crotch part positioned therebetween, and an absorbent main body including an absorbent body, and extending from at least the crotch part to the ventral part on the inner surface side of the exterior sheet In the pants-type absorbent article in which the absorbent main body is fixed in a range,
The ventral portion of the exterior sheet spaced apart from the absorbent main body has a front opening that communicates with the inside and outside and opens in the vertical direction.
A plurality of front opening preventing elastic members spaced from each other and extending from the upper end of the ventral portion to the lower end of the front opening and extending to the other upper end of the ventral portion;
A pant-type absorbent article, wherein a chevron-shaped emboss from the longitudinal end of the absorbent body toward the center is formed at a portion of the absorbent body facing the front opening.   The thickness of the part surrounded by the chevron-shaped emboss from the longitudinal direction end of the absorbent body is 20 to 40% with respect to the thickness of the remaining part of the absorbent body. Pants-type absorbent article. An exterior sheet having a ventral part, a dorsal part, and a crotch part positioned therebetween, and an absorbent main body including an absorbent body, and extending from at least the crotch part to the ventral part on the inner surface side of the exterior sheet In the pants-type absorbent article in which the absorbent main body is fixed in a range,
The ventral portion of the exterior sheet spaced apart from the absorbent main body has a front opening that communicates with the inside and outside and opens in the vertical direction.
A plurality of front opening preventing elastic members spaced from each other and extending from the upper end of the ventral portion to the lower end of the front opening and extending to the other upper end of the ventral portion;
A pant-type absorbent article, characterized in that a chevron-shaped notch extending from the longitudinal end of the absorbent body toward the center is formed at a portion of the absorbent body facing the front opening.   The pant-type absorbent article has a waist elastic member, a waist elastic member, and a ventral dorsal curve elastic member, and one end of the front opening preventing elastic member intersects the waist elastic member, The pants-type absorbent article according to claim 1 or 3, wherein the other end portion of the front opening preventing elastic member intersects the waist elastic member.   The front opening portion extends from the center in the width direction of the pant-type absorbent article toward both sides in the width direction, and the length in the width direction of the front opening portion is the length in the width direction of the absorbent main body. On the other hand, it is 60%-90%, The pants type absorbent article of any one of Claims 1-4.   The said front opening part is formed in the said abdominal part spaced apart 20-40 mm from the longitudinal direction edge part of the said absorptive main body, and is parallel to a waist elastic member. Pants-type absorbent article.

Images