JP5922365B2 - Pants-type absorbent article - Google Patents

Description

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

  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. In such pants-type diapers, caregivers may change diapers, but when changing diapers, both sides of the waist of the pants-type diaper are generally standing in the toilet. Often, one of them is broken and replaced.

  When changing diapers in this way, when only one side of the pant-type diaper is broken, the pant-type diaper is likely to fall off, resulting in an unstable state. For this reason, the wearer or caregiver supports the crotch part while separating the other side part, but at this time, the inner absorbent body falls to the floor and there is a disadvantage that is not hygienic. It was. In addition, since the pants-type diaper in such an unstable state has to be replaced while being supported by the wearer or caregiver, there is also a drawback that the diaper cannot be replaced quickly.

  On the other hand, the underpants type diaper which can open and close a front abdomen right and left is indicated by the following patent documents 1. However, in this patent document 1, although it is set as the structure which can open and close the waist part of a front abdomen right and left, since the operation | movement which opens a waist part left and right is required at the time of diaper replacement | exchange, it was not able to exchange speedily. Moreover, the diaper provided with the disposable pants-type wearing article which can tear a trunk periphery side part like the following patent document 2 is also known. However, in Patent Document 2, panels that extend and contract on both sides are arranged to make it easier to break both sides when changing diapers, but the work of breaking both sides one by one is the same as before. Therefore, the time and effort at the time of replacement could not be reduced.

Japanese Patent Laid-Open No. 2005-230313 JP 2006-346005 A

  Therefore, a main problem of the present invention is to provide a technique that can reduce the labor of exchange and can be exchanged promptly and hygienically when changing diapers.

The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
A plurality of members are laminated, and an exterior sheet having a ventral part, a dorsal part, and a crotch part positioned at the lower part therebetween,
An absorbent body including an absorbent body;
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,
An easy-to-cut portion that facilitates cutting the portion of the exterior sheet that has been applied to the leg opening from the trunk opening in the ventral portion;
A joining part that joins between the plurality of members constituting the exterior sheet from the trunk opening to the leg opening while adjacent to the easy-to-cut part,
Have,
The easy-to-cut part has a main easy-to-cut part and an upper easy-to-cut part
The main cutting easy part is formed in an inverted U shape so that the lower end part of the main cutting easy part reaches the two leg openings, respectively, and two from the trunk opening toward the top of the main cutting easy part The upper cutting easy part is formed,
The joint has a main joint and an upper joint,
The main joint portion is formed in an inverted U shape so that the lower end portion of the main joint portion reaches the two leg opening portions, and the trunk portion opening toward the top portion of the main joint portion between the upper cut easy portions. An upper joint is formed from
A pre-joint part is formed on each side of the upper cut easy part,
A pant-type absorbent article, characterized in that a post-treatment tape that covers the upper cut easy part, the upper joint part, and the preliminary joint part is provided on the outer surface of the exterior sheet .

(Function and effect)
In the present invention, the easy-to-cut part easily cuts the exterior sheet portion from the trunk opening to the leg opening in the abdominal side part, and the joint portion forms the exterior sheet at a position adjacent to the easy-to-cut part. They are joined together. For this reason, when replacing the diaper, by applying a force to the exterior sheet, the exterior sheet is torn along the easy-to-cut part, but even if the tear part is about to come off from the easy-to-cut part to be cut, Since the joining portion is located adjacent to the easy-to-cut portion, the tearing portion stops at this joining portion, so that the exterior sheet is torn to the end along the easy-to-cut portion and does not prevent speedy replacement. .

  Therefore, according to the present invention, by arranging the easy-to-cut part on the ventral part, it is possible to tear and remove this part by applying a force to the easy-to-cut part when replacing the diaper, and the pant-type absorption The sex goods can be easily removed from the body. For this reason, it is possible to replace the pants-type absorbent article hygienically, reducing the labor of replacement and enabling quick replacement, as well as preventing the absorbent body from falling unlike breaking both sides of the waistline. Become.

  As described above, according to the present invention, when replacing a diaper, it is possible to replace the diaper quickly and hygienically, and the wearability is improved. Since the easy-to-cut part and the joint part are only added to the pant-type absorbent article having the general structure, the manufacturing cost is not significantly increased.

The main easy-to-cut portion is formed in an inverted U-shape, and the lower end portions of the main easy-to-cut portion reach the two leg openings, respectively, and the upper easy-to-cut portion from the trunk opening toward the top of the main easy-to-cut portion Therefore, the pants-type absorbent article can be surely torn from the trunk opening to the leg opening.

Like the main easy-to-cut portion and the upper easy-to-cut portion, the main joint portion is formed in an inverted U shape, and the lower ends of the main joint portions reach the two leg openings, respectively, and at the top of the main joint portion. Since the upper joint is formed from the body opening toward the front, even if the cut part is detached from any part of the easy-to-cut part, it stops at the main joint and the upper joint part, and the cut part becomes large. It can be surely prevented from coming off.
Moreover, since the pre-joint part is formed on both sides of the upper cut easy part, respectively, and the post-treatment tape covering the upper cut easy part, the upper joint part, and the preliminary joint part is provided on the outer surface of the exterior sheet, It is possible to prevent the upper easy-to-cut portion from being unnecessarily cut by preventing external force from being applied to the upper easy-to-cut portion.

<Invention of Claim 2 >
The main joint in a position surrounding the outside of the main cutting easier portion which is formed into an inverted U-shape is disposed, pant-type absorbent article of claim 1, wherein.

(Function and effect)
Since the main joint portion is arranged at a position surrounding the outside of the inverted U-shaped main easy-to-cut portion, it is possible to prevent the cut portion from coming off from the main-cut easy portion more reliably.

<Invention of Claim 3 >
The pants-type absorbent article according to claim 1 or 2 , wherein a cut portion to be cut is provided in the vicinity of the intersection between the main cut easy portion and the upper cut easy portion of the exterior sheet.

(Function and effect)
By placing a notch at the intersection of the easy-to-cut part and the upper easy-to-cut part, this part can be easily broken, and the exterior sheet can be easily torn with one hand, allowing for a faster exchange. .

<Invention of Claim 4 >
The underpants type absorbent article according to any one of claims 1 to 3 , wherein the easy-to-cut part cuts the exterior sheet intermittently through perforations.

(Function and effect)
By forming the easy-to-cut portion by intermittently cutting the exterior sheet by the perforation, the easy-to-cut portion can be easily formed when manufacturing the pant-type absorbent article.

  As described above, according to the present invention, there is an advantage that, when changing diapers, labor can be reduced and exchange can be performed promptly and hygienically.

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 explaining tearing of the pants type absorbent article of the 1st form. It is a front view of the underpants type absorbent article of the 2nd form. It is a front view of the underpants type absorbent article of the 3rd form. It is a front view of the underpants type absorbent article of the 4th form. It is a front view of the underpants type absorbent article of the 5th form.

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.

  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. The upper layer nonwoven fabric 20A and the lower layer nonwoven fabric 20B are formed by spunlace, air-through, point bond, air laid, spun bond, needle punch, etc., and are various elastic members between the upper layer nonwoven fabric 20A and the lower layer nonwoven fabric 20B. I decided to stick the rubber thread together.

  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 ventral portion F of the exterior sheet 20 has an easy-to-cut portion 40 that is perforated from the trunk opening 36 to the leg opening 38 to be a cut portion. Is provided. And this main cutting easy part 40A is each formed in the reverse U shape so that the lower end part of 40 A of main cutting easy parts may reach the two leg part opening 38, respectively. Also, two upper easy-to-cut parts 40B that are perforated from the body opening 36 toward the top of the inverted U-shaped main easy-to-cut part 40A are also formed in parallel with each other along the vertical direction. For this reason, since the exterior sheet 20 is intermittently cut by the perforation, the exterior sheet 20 is easily cut at the main cutting easy part 40A and the upper cutting easy part 40B.

  On the outer peripheral side of the main easy-to-cut portion 40A formed in the inverted U-shape, the upper layer nonwoven fabric 20A, which is a plurality of members constituting the exterior sheet 20 from the trunk opening 36 to the leg opening 38 in the ventral part F, and the lower layer A main joining portion 42A for joining the nonwoven fabric 20B and various elastic members to each other is disposed. Accordingly, the main joint 42A is also formed in an inverted U shape, and the lower ends of the main joint 42A reach the two leg openings 38, respectively. For this reason, this main joining part 42A will be located adjacent to the outer peripheral side of 40 A of main cutting easy parts so that the outer peripheral side of 40 A of main cutting easy parts may be enclosed.

  On the other hand, an upper joint 42B is formed from the trunk opening 36 toward the top of the inverted U-shaped main joint 42A along the vertical direction between the two upper easy-to-cut parts 40B. The part 42B also joins the plurality of members constituting the exterior sheet 20 to each other. The main joint portion 42A and the upper joint portion 42B constituting the joint portion 42 can be considered to join a plurality of members constituting the exterior sheet 20 linearly by heat welding. Also good.

  When changing the diaper, one hand has a waist portion in the vicinity of the trunk opening 36 and the other hand has a portion of the exterior sheet 20 corresponding to the upper end portion of the absorbent main body 10, and the upper end portion of the absorbent main body 10. The corresponding part of the main cutting easy part 40A is first cut off (shown in a partially cut state in FIG. 6), and then the upper cutting easy part 40B is cut off. To do.

  Therefore, by applying a force to the exterior sheet 20 when changing the diaper, the exterior sheet 20 is torn along the main easy-to-cut portion 40A, but the tear portion is detached from the main easy-to-cut portion 40A to be originally cut. Even in such a case, since the main joint portion 42A is located adjacent to the main cutting easy portion 40A, the tearing portion is prevented from coming off at the main bonding portion 42A. The exterior sheet 20 is torn along the end and does not prevent speedy replacement. Also, when cutting the upper easy cutting portion 40B, the upper joint portion 42B is located adjacent to the other, so that the exterior sheet 20 is similarly torn along the upper easy cutting portion 40B. .

  That is, according to this aspect, by arranging the easy-to-cut portion 40 in the ventral portion F, when changing the diaper, it is possible to simply apply a force to the easy-to-cut portion 40 and tear this portion. The mold absorbent article 1 can be easily removed from the body. For this reason, it is possible to exchange quickly by reducing the labor of replacement, and unlike the case of breaking both sides of the waistline portion, the absorbent main body 10 does not fall from the exterior sheet 20, and the pant-type absorbent article 1 is removed. Hygienically replaceable.

  As described above, according to the present aspect, when changing the diaper, it is possible to replace the diaper quickly and at the same time, it can be replaced hygienically, the wearability is improved, and the pant-type absorbent article 1 is manufactured. At this time, since the easy-to-cut portion 40 and the joining portion 42 are only added to the conventional general structure, the manufacturing cost does not increase significantly.

(Second form)
In the first embodiment, the easy-to-cut part 40 including the main easy-to-cut part 40A and the upper-side easy-to-cut part 40B is formed, and the joint part 42 including the main-joining part 42A and the upper-side joint part 42B is formed. Although these are similarly formed in the present embodiment, as shown in FIG. 7, it is a portion near the intersection of the main cutting easy portion 40A and the upper cutting easy portion 40B of the exterior sheet 20, and the main joint 42A and the main cutting portion. It is set as the structure where the notch part 44 used as the notch | incision was provided between the cutting | disconnection easy parts 40A.

  Therefore, as in this embodiment, the initial detachability is improved by making a cut in the vicinity of the intersection between the main cleavable portion 40A and the upper cleavable portion 40B.

(Third form)
In the first embodiment, the main cutting easy portion 40A and the main joint portion 42A are formed. However, in this embodiment, as shown in FIG. 8, the U-shaped sewing machine is similarly formed on the outer peripheral side of the main joint portion 42A. The outer easy-to-cut part 40C formed by the eyes is arranged, and the outer joint part 42C is formed on the outer peripheral side of the outer easy-to-cut part 40C.

  Therefore, by adopting a double structure as in this embodiment, even if the exterior sheet 20 is torn in the side part direction beyond the main joint portion 42A, the outer cut easy portion 40C and the outer joint portion 42C exist. Thus, it can be reliably broken along the direction of the leg opening 38.

(4th form)
In the first embodiment, the easy-to-cut portion 40 and the joint portion 42 are formed. In the present embodiment, these are similarly formed. However, in this embodiment, a force is applied from the outside to the perforation of the upper easy-to-cut portion 40B. Is not added. Specifically, as shown in FIG. 9, a pre-joining portion 42D is provided on the outer side of the upper-side easy-to-cut portion 40B in the same manner as the upper-side joining portion 42B, and a post-processing tape 46 is pasted thereon to perform this post-processing. Reinforcing with the tape 46 prevents the upper cut easy part 40B from being externally applied and prevents the upper cut easy part 40B from being cut unnecessarily.

  As a result, when not reinforcing as described above, the perforation of the upper easy-to-cut portion 40B of the waist portion is easily torn when pulled up with the vicinity of the waist portion in the vicinity of the body opening 36, but the structure as shown in FIG. By doing so, the difficulty of breaking when the pant-type absorbent article 1 is pulled up is improved. However, at the time of diaper replacement, the upper cutting easy portion 40B is cut along with the operation of removing the post-processing tape 44, so there is no problem in diaper replacement.

(5th form)
Also in the present embodiment, the easy-to-cut portion 40 including the main cutting easy portion 40A and the upper cutting easy portion 40B is formed as in the first embodiment, and the bonding portion 42 including the main bonding portion 42A and the upper bonding portion 42B. Although formed, in this embodiment, as shown in FIG. 10, the main cutting easy portion 40A and the main joint portion 42A are not reverse U-shaped, but connect each perforation and the joint line linearly, and at the intersection. It is designed to bend at right angles. Even in such a structure, similarly to the inverted U-shaped structure, when changing the diaper, it is possible to replace the diaper quickly so that it can be replaced quickly and hygienically, so that the wearability is improved.

  In addition, in each said aspect, although it is possible that the junction part 42 welds linearly by heat welding, it is good also as a form welded intermittently in the shape of a dot. Moreover, although it is thought that the easy cutting part 40 is formed with a perforation, you may form a thin cutting line in the exterior sheet | seat 20 which is another means. On the other hand, when forming the perforation to be the joint portion 42 and the easy-to-cut portion 40 on the exterior sheet 20, various elastic members sandwiched between the upper layer nonwoven fabric 20A and the lower layer nonwoven fabric 20B in the vicinity of the welding location. It is conceivable that after fixing with a hot melt adhesive, they are bonded together by heat to form the joint 42 and perforations.

  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 ... easy cutting part, 40A ... main cutting easy part, 40B ... upper cutting easy part, 42 ... joint part, 42A ... main joint, 42B ... upper joint, 44 ... notch, F ... ventral part, B ... dorsal part, BS ... solid gather, M ... crotch part.

Claims (4)

A plurality of members are laminated, and an exterior sheet having a ventral part, a dorsal part, and a crotch part positioned at the lower part therebetween,
An absorbent body including an absorbent body;
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,
An easy-to-cut portion that facilitates cutting the portion of the exterior sheet that has been applied to the leg opening from the trunk opening in the ventral portion;
A joining part that joins between the plurality of members constituting the exterior sheet from the trunk opening to the leg opening while adjacent to the easy-to-cut part,
Have,
The easy-to-cut part has a main easy-to-cut part and an upper easy-to-cut part,
The main cutting easy part is formed in an inverted U shape so that the lower end part of the main cutting easy part reaches the two leg openings, respectively, and two from the trunk opening toward the top of the main cutting easy part The upper cutting easy part is formed,
The joint has a main joint and an upper joint,
The main joint portion is formed in an inverted U shape so that the lower end portion of the main joint portion reaches the two leg opening portions, and the trunk portion opening toward the top portion of the main joint portion between the upper cut easy portions. An upper joint is formed from
A pre-joint part is formed on each side of the upper cut easy part,
A pant-type absorbent article, characterized in that a post-treatment tape that covers the upper cut easy part, the upper joint part, and the preliminary joint part is provided on the outer surface of the exterior sheet . The main joint in a position surrounding the outside of the main cutting easier portion which is formed into an inverted U-shape is disposed, pant-type absorbent article of claim 1, wherein. The pants-type absorbent article according to claim 1 or 2 , wherein a cut portion to be cut is provided in the vicinity of the intersection between the main cut easy portion and the upper cut easy portion of the exterior sheet. The underpants type absorbent article according to any one of claims 1 to 3 , wherein the easy-to-cut part cuts the exterior sheet intermittently through perforations.