JP2018051074A - Disposable diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disposable diaper capable of reducing disposable diaper change time and reducing change time of a pad to be fitted onto the inner surface of the disposable diaper to reduce diaper changing work.SOLUTION: A disposable diaper is provided with fastening tapes each extending in the width direction in the back side part of an exterior sheet, the fastening tape including upper fastening tape positioned on the upper side and lower fastening tape positioned on the lower side, the upper fastening tape including an upper main body extending in the width direction and an upper engagement part on the inner surface of the distal end of the upper main body, and the lower fastening tape including a lower main body extending in the width direction and a lower engagement part on the inner surface of the distal end of the lower main body. When wearing the disposable diaper, the upper fastening tape is engaged with the abdominal side part of the exterior sheet in the downward inclined posture, and the lower fastening tape is engaged with the abdominal side part of the exterior sheet in the upward inclined posture. At least one of an upper slit and a lower slit that extend in the width direction is formed, the upper slit being provided in the upper main body to insert the lower fastening tape, and the lower slit being provided in the lower main body to insert the upper fastening tape.SELECTED DRAWING: Figure 1

Description

  The present invention generally relates to a disposable diaper, and more particularly, to a disposable diaper from which a cross stopper and a fastening tape can be easily peeled off.

  Conventionally, in order to obtain a good wearing feeling of the disposable diaper, the fastening tape is cross-stopped, the fastening tape is pulled diagonally downward and connected, and the waist is firmly tightened, and the fastening tape on the leg circumference side is diagonally upward It has been tightened around the legs by connecting them while pulling.

  Patent document 1 is a disposable diaper with a cross stopper, and in a diaper having a fastening tape part that is divided into two parts, upper and lower, at least one of the upper and lower two-stage elastic sheets has an opening. A disposable diaper capable of being cross-stopped and having a stretchable part on the base end side and the free end side with respect to the perforation provided on the perforation.

  Patent Document 2 is a diaper cover, in which a first fastener is provided in each of a right waist portion and a left waist portion, and the left waist portion can be inserted inward in the width direction from the first fastener in the right waist portion. There is disclosed a diaper cover provided with an opening and / or an opening through which the right waist portion can be inserted inward in the width direction from the first fastener of the left waist portion. Disclosed is a mechanism that uses openings to insert each other when the left and right tapes are stopped.

JP-A-2015-186547 JP 2011-156275 A

  With conventional cloth-type disposable diapers, the upper and lower fastening tapes must be peeled off when changing diapers, which is troublesome in hospital facilities and nursing care facilities where there are many diaper subjects. In particular, in hospitals and nursing homes that accommodate many elderly people, the time to replace disposable diapers and the time to replace pads that are attached to disposable diapers are reduced. Therefore, it was desired to reduce the replacement work.

  However, even in the technique of Patent Document 1, when replacing the disposable diaper, it is necessary to peel off the upper and lower fastening tapes, and the replacement time is long and the burden of the replacement work remains large.

  The technique of Patent Document 2 uses an opening formed in the right waist part having a predetermined rigidity or more when the diaper cover is attached / detached, but the opening is not used for crossing.

  Then, the main subject of this invention is providing the disposable diaper which shortens exchange time of a disposable diaper, shortens the exchange time of the pad with which the inner surface of a disposable diaper is mounted | worn, and reduces exchange work.

Means for solving the above problems are as follows.
The first means includes a liquid-permeable top sheet provided on the body side, a liquid-impermeable back sheet provided on the non-body side, and excrement provided between the top sheet and the back sheet. In a disposable diaper comprising an absorbent body that absorbs and an exterior sheet formed of a non-woven fabric provided on the non-body side of the back sheet,
A fastening tape extending in the width direction is provided on the back side portion of the exterior sheet, and the fastening tape is formed of an upper fastening tape located on the upper side and a lower fastening tape located on the lower side, and the upper fastening tape. The tape forms an upper engaging portion on the inner surface of the end portion of the upper body portion extending in the width direction, and the lower fastening tape is formed on the inner surface of the end portion of the lower body portion extending in the width direction. A side engagement portion is formed, and when installed, the upper fastening tape is locked in a downward inclined posture on the abdominal side portion of the exterior sheet, and the lower fastening tape is in an upward inclined posture, and is lowered to the upper body portion. There are few upper slits extending in the width direction through which the side fastening tape is inserted and lower slits extending in the width direction through which the upper fastening tape is inserted into the lower body portion. Characterized in that that also form one.

  In the configuration of the first means, the second slit is formed larger than the outer peripheral section of the lower main body, and the lower slit is formed larger than the outer peripheral section of the upper main body. It is characterized by that.

  In the configuration of the first or second means, the third means forms an upper non-engaging portion along the upper slit in the vicinity of the upper slit in the upper main body, and the lower slit in the lower main body A lower non-engaging portion is formed in the vicinity of the lower slit along the lower slit.

  The fourth means is characterized in that, in the configuration of the third means, the upper non-engaging portion is formed from an emboss or a film, and the lower non-engaging portion is formed from an emboss or a film.

  5th means WHEREIN: The structure of the means of any one of 1-4 WHEREIN: The said upper side main-body part is extended in the width direction between an upper inner sheet | seat, an upper outer sheet | seat, an upper inner sheet | seat, and an upper outer sheet | seat. The upper elastic member is formed of an existing upper elastic member, and the upper elastic member located above the upper slit is set to have a difference between the elastic force of the upper elastic member located below the upper slit. The lower body portion is formed of a lower inner sheet, a lower outer sheet, and a lower elastic member extending in a width direction between the lower inner sheet and the lower outer sheet, It is set that there is a difference between the elastic force of the lower elastic member positioned above the side slit and the elastic force of the lower elastic member positioned below the lower slit.

  The sixth means is the structure of any one of the first to fifth aspects, wherein a first upper notch is formed in the upper part of the upper body part, and a first lower notch is formed in the lower part of the upper body part. Forming the first upper cut portion in a downward slope toward the central portion in the width direction, forming the first lower cut portion in an upward slope toward the central portion in the width direction, Forming a second upper cut portion at an upper portion, forming a second lower cut portion at a lower portion of the lower main body portion, and forming the second upper cut portion to be inclined downward toward the center in the width direction; The second lower cut portion is formed so as to be inclined upward toward the center portion in the width direction.

  According to the first means, the fastening tape extending in the width direction is provided on the back side portion of the exterior sheet, and the fastening tape is formed by the upper fastening tape located on the upper side and the lower fastening tape located on the lower side. The upper fastening tape forms an upper engagement portion on the inner surface of the end portion of the upper body portion extending in the width direction, and the lower fastening tape is formed at the end portion of the lower body portion extending in the width direction. A lower engagement portion is formed on the inner surface, and when mounted, the upper fastening tape is locked in a downward inclined posture on the abdominal side portion of the exterior sheet, and the lower fastening tape is in an upward inclined posture on the upper body portion. At least one of an upper slit extending in the width direction through which the lower fastening tape is inserted and a lower slit extending in the width direction through which the upper fastening tape is inserted into the lower body portion Since it was formed, for example, the lower engaging portion of the lower fastening tape was engaged, and after the upper fastening tape was inserted into the lower slit of the lower fastening tape, the upper engaging portion of the upper fastening tape was engaged. In the state, if the engagement part of either the upper fastening tape or the lower fastening tape is released, the engagement part of the other fastening tape can also be released. It is possible to shorten the replacement time of the pad, and to reduce the load of replacement work. Further, even when the engagement portion of any fastening tape is released, the upper fastening tape is maintained in the state of being inserted into the lower slit, so that it is possible to particularly shorten the time for adjusting the displacement such as pad displacement.

  According to the second means, in addition to the effect of the first means, the upper slit is formed larger than the outer peripheral section of the lower main body, and the lower slit is formed larger than the outer peripheral section of the upper main body. Therefore, the upper fastening tape can be easily inserted into the lower slit, and the lower fastening tape can be easily inserted into the upper slit, so that it is possible to change the disposable diaper and the exchange time of the pad inside the disposable diaper. Can be shortened, and the load of replacement work can be further reduced.

  According to the third means, in addition to the effect of the first or second means, the upper non-engaging portion is formed along the upper slit in the vicinity of the upper slit in the upper main body portion, and the lower portion in the lower main body portion is formed. Since the lower non-engaging portion is formed along the lower slit in the vicinity of the side slit, the upper engaging portion is engaged with the lower slit when the upper fastening tape is inserted into the lower slit. The upper fastening tape can be efficiently inserted into the lower slit. Similarly, when the lower fastening tape is inserted into the upper slit, the lower engagement portion can be prevented from engaging with the upper slit, and the lower fastening tape can be efficiently inserted into the upper slit. Therefore, the replacement time of the disposable diaper and the replacement time of the pad embedded in the disposable diaper can be further shortened, and the load of the replacement work can be further reduced.

  According to the fourth means, in addition to the effect of the third means, the upper non-engagement portion is formed from embossing or film, and the lower non-engagement portion is formed from embossing or film. The engagement of the vicinity of the lower slit can be prevented, and similarly, the lower engagement can be prevented from engaging the vicinity of the upper slit.

  According to the fifth means, in addition to the effect of the means according to any one of the first to fourth aspects, the upper body portion has a width between the upper inner sheet, the upper outer sheet, and the upper inner sheet and the upper outer sheet. The upper elastic member that extends in the direction, and there is a difference between the elastic force of the upper elastic member located above the upper slit and the elastic force of the upper elastic member located below the upper slit. The lower body part is formed of a lower inner sheet, a lower outer sheet, and a lower elastic member extending in the width direction between the lower inner sheet and the lower outer sheet, Since the elastic force of the lower elastic member located above the slit is set to have a difference in the elastic force of the lower elastic member located below the lower slit, as described below, The engagement between the side engagement part and the vicinity of the upper slit can be further prevented. Exchange time and diapers discarded, exchange time pads are decorated in disposable diapers to be further reduced, thereby further reducing the load on the replacement.

That is, for example, when the sheet is inserted into the slit from the front side to the rear side to reach the first mounting state, the stretching force of the upper stretchable member located above the upper slit is set to the upper side located below the upper slit. The lower body member is set to be smaller than the elastic force of the elastic member, and the lower main body portion is provided with the elastic force of the lower elastic member located above the lower slit, and the lower elastic member located below the lower slit. Is set to be larger than the expansion / contraction force of the upper fastening tape, the upper portion of the lower slit facing the upper engaging portion of the upper fastening tape is deformed in an arc shape toward the lower side. The upper portion of the upper slit facing the lower engaging portion of the lower fastening tape can be prevented from being engaged more closely, and the upper portion of the upper slit is deformed in an arc shape toward the upper side. Prevents near-by engagement Rukoto can exchange time of disposable diapers and the exchange time of the pads are decorated in disposable diapers to be further reduced, thereby further reducing the load on the replacement.

  As another case, when the sheet is inserted into the slit from the rear side to the front side to reach the first mounting state, for example, the expansion force of the upper elastic member positioned below the upper slit is set to the upper side of the upper slit. The lower body part is set to be lower than the lower elastic member positioned below the lower slit. If it is set smaller than the elastic force of the side elastic member, the lower side portion of the lower slit facing the upper engaging portion of the upper fastening tape is deformed in an arc shape toward the upper side, The engagement of the vicinity of the lower slit can be further prevented, and the upper portion of the upper slit facing the lower engagement portion of the lower fastening tape is deformed in an arc shape toward the lower side. Engagement between the joint and the vicinity of the upper slit Can be more prevented, exchange time and disposable diapers, can reduce the exchange time of the pads are decorated in a disposable diaper, it is possible to reduce the load of the replacement.

  According to the sixth means, in addition to the effect of the means according to any one of the first to fifth aspects, the first upper notch is formed in the upper part of the upper body part, and the first lower notch is formed in the lower part of the upper body part. A first upper cut portion is formed in a downward slope toward the central portion in the width direction, a first lower cut portion is formed in an upward slope toward the central portion in the width direction, and an upper portion of the lower main body portion. A second upper cut portion is formed at a lower portion of the lower main body portion, and the second upper cut portion is formed to be inclined downward toward the center in the width direction. Since the incision part is formed so as to rise toward the center part in the width direction and the engagement part of any fastening tape is released, the upper fastening tape maintains the state of being inserted into the lower slit more particularly, It is possible to further shorten the adjustment time for pad misalignment etc. .

It is the inner surface top view which expand | deployed the disposable diaper. It is the outer surface top view which expand | deployed the disposable diaper. It is iii-iii sectional drawing of FIG. It is iv-iv sectional drawing of FIG. It is vv sectional drawing of FIG. It is explanatory drawing at the time of mounting | wearing of the fastening tape of 1st Embodiment. It is explanatory drawing of the slit penetration of the fastening tape of 1st Embodiment. It is explanatory drawing of the slit penetration of the fastening tape of 1st Embodiment. It is explanatory drawing of the modification of mounting | wearing of the fastening tape of 1st Embodiment. It is the perspective view which mounted | wore the body with the disposable diaper of 1st Embodiment with the fastening tape. It is explanatory drawing of the dimension of the fastening tape of 1st Embodiment. It is explanatory drawing of the fastening tape of 2nd Embodiment. It is explanatory drawing of the fastening tape of 3rd Embodiment. It is explanatory drawing of the fastening tape of 4th Embodiment.

<Disposable diaper according to the first embodiment>
The disposable diaper of 1st Embodiment is demonstrated referring FIGS. In this specification, the “front-rear direction” refers to the direction connecting the abdomen and the back side, “width direction” refers to the direction orthogonal to the front-rear direction, and “up-down direction” refers to the wearing state of the disposable diaper. The direction orthogonal to the waistline direction is referred to, the “inner surface” refers to the body side surface of each member, and the “outer surface” refers to the anti-body side surface. In addition, the fixed location fixed through adhesives, such as hot melt considered to be necessary for explanation, is attached with diagonal lines and dots.

  As shown in FIGS. 1 and 2, the disposable diaper 100 includes a body-side liquid-permeable top sheet 1, a non-body-side liquid-impermeable back sheet 2, and the top sheet 1 and the back sheet 2. The absorber 3 provided is provided. An exterior sheet 20 is provided on the outer surface of the back sheet 2.

  In order to prevent the excrement from leaking to the outside on the outer side in the width direction of the absorber 3, a three-dimensional gather 30 for legs is provided, and a predetermined interval is provided outside the base of the three-dimensional gather 30. A flat gather 40 is provided for each leg to prevent the excrement from leaking to the outside.

  On the back side of the absorbent body 3 in the front-rear direction, there is provided a backside three-dimensional gather 50 that prevents the excrement from leaking to the outside, and the base of the three-dimensional gather 30 prevents the excrement from leaking to the outside. A backside flat gather 60 is provided.

  End flap portions EF to which the absorber 3 does not extend are respectively provided on the outer side in the front-rear direction of the absorber 3, and side flap portions SF to which the absorber 3 does not extend on both outer sides in the width direction of the absorber 3. Are provided.

  A fastening tape 70 extending outward is provided on the back side of the side flap portion SF, and the fastening tape 70 is provided on the abdomen side of the outer surface of the exterior sheet 20 when the disposable diaper 100 is attached to the wearer. A target sheet 90 is provided for locking.

(Top sheet)
The top sheet 1 extends outward from the outer peripheral edge of the absorbent body 3, and the extended portion is fixed to the inner surface of the back sheet 2 via an adhesive such as hot melt.

As the top sheet 1, a perforated or non-porous nonwoven fabric or a perforated plastic sheet is used. As the material fiber constituting the nonwoven fabric, synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and amide, recycled fibers such as rayon and cupra, and natural fibers such as cotton can be used. Moreover, as a processing method of a nonwoven fabric, well-known methods, such as the spunlace method, the spun bond method, the SMS method, the thermal bond method, the melt blown method, the needle punch method, the air through method, the point bond method, can be used. The fiber basis weight of the nonwoven fabric used for the top sheet 1 is preferably 15 to 30 g / m ² , and the thickness is preferably 0.05 to 1 mm.

(Back sheet)
The back sheet 2 extends outward from the outer peripheral edge of the absorber 3 and blocks movement of excrement absorbed by the absorber 3 to the outside.

As the back sheet 2, in addition to a plastic film such as a polyethylene film, a sheet having moisture permeability can be used without impairing water shielding from the viewpoint of preventing stuffiness. This water-impervious and moisture-permeable 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. Can be used. The weight per unit area of the backsheet ² is preferably 13 to 40 g / m ² and the thickness is preferably 0.01 to 0.1 mm.

(Absorber)
As the absorbent body 3, it is possible to use a laminate of pulp fibers, an aggregate of filaments such as cellulose acetate, or a nonwoven fabric, which is mixed and fixed with a superabsorbent polymer as necessary. . The pulp basis weight in the absorbent body 3 is preferably 100 to 500 g / m ² and the thickness is preferably 1 to 15 mm. Further, the basis weight of the superabsorbent resin is preferably 0 to 300 g / m ² , and if the superabsorbent resin content is too low, sufficient absorbability cannot be provided, and if it is too high, the entanglement between the pulp fibers is eliminated. , Twisting and cracking are likely to occur. Moreover, although the absorber 3 of this embodiment is formed in the hourglass shape in planar view, it can also be formed in a rectangular shape or the like.

(Exterior sheet)
The exterior sheet 20 covers the back sheet 2 so that the outer surface of the disposable diaper 100 has a cloth-like appearance and feel. The exterior sheet 20 is preferably formed of a nonwoven fabric. As the material fiber, olefin fiber such as polyethylene or polypropylene, polyester fiber, polyamide fiber, etc., recycled fiber such as rayon and cupra, and natural fiber such as cotton can be used. The spun bond method, the thermal bond method, the air through method, the needle punch method and the like can be used. However, a long-fiber nonwoven fabric such as a spunbond nonwoven fabric, an SMS nonwoven fabric, or an SMMS nonwoven fabric is preferable in that both the touch and strength can be achieved.

In addition to using a single nonwoven fabric, a plurality of nonwoven fabrics can also be used. When a plurality of nonwoven fabrics are used, it is preferable to fix the nonwoven fabrics together with an adhesive such as hot melt. Moreover, when using a nonwoven fabric, the fiber basis weight is 10-50 g / m < ² >, Especially 15-30 g / m < ² > is preferable.

(3D gathers around the legs)
As shown in FIGS. 3 and 4, the base 31 </ b> A of the gather sheet 31 that forms the three-dimensional gathers 30 around the legs is an outer portion in the width direction of the inner surface of the top sheet 1 and an outer portion in the width direction of the inner surface of the back sheet 2. It is being fixed to the front-back direction. Further, both ends in the front-rear direction of the upright portion 31B of the gather sheet 31 are fixed to the outer portion in the width direction of the inner surface of the top sheet 1 and the outer portion in the width direction of the inner surface of the gather sheet 51 forming the three-dimensional gather 50. An intermediate portion in the front-rear direction of the upright portion 31 </ b> B of the gather sheet 31 is not fixed to the inner surface of the top sheet 1 and the inner surface of the gather sheet 51 and is separated. The standing portion 31B is provided with a plurality of elongated elastic elastic members 32 extending in the front-rear direction with a predetermined interval in the width direction in a predetermined extended state. Thus, when the disposable diaper 100 is worn by the wearer, the standing portion 31B is raised toward the wearer's crotch portion by the contraction force of the elastic elastic member 32, and the tip of the standing portion 31B is placed on the wearer's crotch. It is possible to prevent leakage of excrement to the outside by pressing against the crotch portion.

  The gather sheet 31 may be a non-woven fabric such as a spunbond non-woven fabric, a plastic film similar to that used for the back sheet 2, or a laminate sheet thereof. However, from the viewpoint of touch to the skin, Nonwoven fabric subjected to water treatment is preferred.

  As the elastic elastic member 32, natural rubber or synthetic rubber formed in a thread shape, string shape, belt shape, etc., specifically, styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, Commonly used materials such as styrene butadiene, silicon, and polyester can be used. The thickness of the elastic elastic member 32 is preferably about 500 to 1500 dtex, particularly about 800 to 1300 dtex (about 0.1 to 3 mm, especially about 0.5 to 3 mm in the case of natural rubber). About 150 to 250%, particularly about 160 to 200% is preferable. In FIG. 1, the diagonally upward diagonal lines indicate the fixing points of the gather sheet 31, and the diagonally upward diagonal lines indicate the fixing points of the gather sheet 51.

(Flat gathering for legs)
The planar gather 40 is provided at a portion facing the base portion 31A of the gather sheet 31 in the side flap portion SF. On the outer side in the width direction of the back sheet 2 and the exterior sheet 12 forming the side flap portion SF, an elongated elastic elastic member 41 extending in the front-rear direction with a predetermined interval in the width direction is in a predetermined extension state. Is provided. Thereby, when the disposable diaper 100 is mounted on the wearer, the flat gathers 40 can be pressed against the wearer's legs by the contraction force of the elastic elastic member 41 to prevent the excrement from leaking to the outside. .

  As the elastic elastic member 41, natural rubber or synthetic rubber formed in a thread shape, string shape, belt shape, etc., specifically, styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, Commonly used materials such as styrene butadiene, silicon, and polyester can be used. The interval between the elastic elastic members 41 is preferably about 2 to 15 mm, particularly about 3 to 7 mm. Furthermore, the thickness of the elastic elastic member 41 is preferably about 500 to 1500 dtex, particularly about 800 to 1300 dtex (about 0.1 to 3 mm, especially about 0.5 to 3 mm in the case of natural rubber), and the elongation at the time of attachment is About 150 to 250%, particularly about 160 to 200% is preferable.

(Backside solid gather)
As shown in FIG. 5, the base portion 51 </ b> A of the gather sheet 51 that forms the back-side three-dimensional gather 50 is fixed to the intermediate portion in the width direction of the back side portion of the inner surface of the top sheet 1. Further, both side portions in the width direction of the inner surface of the upright portion 51B of the gather sheet 51 are fixed to the outer surface of the gather sheet 31 facing the inner surface of the top sheet 1, and are arranged in the intermediate portion in the width direction of the upright portion 51B of the gather sheet 51. Are provided with a plurality of elongated elastic elastic members 52 extending in the width direction with a predetermined interval in the front-rear direction in a predetermined extended state. As a result, when the disposable diaper 100 is worn by the wearer, the standing portion 51B is raised toward the wearer's back by the contraction force of the elastic elastic member 52, and the tip of the standing portion 51B is placed on the wearer's back. The excrement can be prevented from leaking to the outside.

  The gather sheet 51 can be made of a non-woven fabric such as a spunbond nonwoven fabric as well as the gather sheet 31, a plastic film similar to that used for the back sheet 2, or a laminate sheet thereof. In this respect, a nonwoven fabric subjected to water repellent treatment is preferable.

  The elastic elastic member 52 is a natural rubber or a synthetic rubber formed in a thread shape, a string shape, a belt shape, etc., like the elastic elastic member 32, specifically, styrene rubber, olefin rubber, urethane rubber, ester rubber. Ordinarily used materials such as polyurethane, polyethylene, polystyrene, styrene butadiene, silicon, and polyester can be used. The thickness of the elastic elastic member 32 is preferably about 500 to 1500 dtex, particularly about 800 to 1300 dtex (about 0.1 to 3 mm, especially about 0.5 to 3 mm in the case of natural rubber). About 150 to 250%, particularly about 160 to 200% is preferable.

(Back gather for backside)
The planar gather 60 is provided at a portion of the end flap portion EF that faces the base portion 51A of the gather sheet 51. An elongated elastic elastic member 61 extending in the width direction with a predetermined interval in the front-rear direction is provided in the base 51A of the gather sheet 51 in a predetermined extended state. Thereby, when the disposable diaper 100 is worn by the wearer, the flat gather 60 can be pressed against the wearer's back by the contraction force of the elastic elastic member 61 to prevent the excrement from leaking to the outside.

  The elastic elastic member 61 is a natural rubber or a synthetic rubber formed in a thread shape, a string shape, a belt shape, etc., like the elastic elastic member 41, specifically a styrene rubber, an olefin rubber, a urethane rubber, an ester rubber. Ordinarily used materials such as polyurethane, polyethylene, polystyrene, styrene butadiene, silicon, and polyester can be used. The interval between the elastic elastic members 41 is preferably about 2 to 15 mm, particularly about 3 to 7 mm. Furthermore, the thickness of the elastic elastic member 41 is preferably about 500 to 1500 dtex, particularly about 800 to 1300 dtex (about 0.1 to 3 mm, especially about 0.5 to 3 mm in the case of natural rubber), and the elongation at the time of attachment is About 150 to 250%, particularly about 160 to 200% is preferable. In addition, although the elastic elastic member 61 of this embodiment is provided in the base 51A of the gather sheet 51, a separate sheet may be provided on the back side in the front-rear direction of the gather sheet 51 to provide the elastic elastic member 61.

(Fastening tape)
As shown in FIGS. 1-3, the fastening tape 70 extended toward the outer side is each provided in the back side part of side flap part SF. The base portion 73 of the fastening tape 70 is fixed between outer portions of the exterior sheet 20 and the gather sheet 31 in the width direction. The fastening tape 70 is formed of an upper fastening tape 78 positioned on the upper side and a lower fastening tape portion 88 positioned on the lower side. The upper fastening tape 78 further includes an upper body portion 79 extending in the width direction, The lower fastening tape portion 88 is formed by an upper engaging portion 72 disposed on the inner surface of the end portion of the main body portion 79, and includes a lower main body portion 89 extending in the width direction and an end portion of the lower main body portion 89. Formed by a lower engagement portion 82 disposed on the inner surface of
An upper slit 75 extending in the width direction through which the lower fastening tape portion 88 can be inserted is formed in the upper body portion 79, and a width in which the upper fastening tape 78 can be inserted into the lower body portion 89. Although the lower slit 85 extending in the direction is formed, any one of the slits may be formed.

The material of the fastening tape 70 is preferably a nonwoven fabric, and any known nonwoven fabric can be used without any particular limitation. As fibers constituting the nonwoven fabric, synthetic fibers such as polyethylene or polypropylene such as olefin, polyester and amide, recycled fibers such as rayon and cupra, and natural fibers such as cotton can be used. Moreover, as a manufacturing method of a nonwoven fabric, well-known methods, such as a spunlace method, a spunbond method, an SMS method, a thermal bond method, a melt blown method, a needle punch method, an air through method, a point bond method, can be used. As a processing method, known methods such as a spunlace method, a spunbond method, an SMS method, a thermal bond method, a melt blown method, a needle punch method, an air-through method, a point bond method, and the like can be used. In addition, for example, a stretchable nonwoven fabric in which a stretchable film is bonded between two layers of nonwoven fabric may be used. In particular, a spunbond nonwoven fabric and an SMS nonwoven fabric using olefin fibers are preferable. The basis weight of the nonwoven fabric to be used can be determined as appropriate, but the total basis weight of the nonwoven fabric in the main body portion 5b is 20 to 75 g / m ² , particularly 26 to 46 g / m ² , and the nonwoven fabric in the fixing portion 5f and the tip portion 5p. Are preferably 35 to 130 g / m ² , particularly 46 to 116 g / m ² . Within this range, the strength and rigidity of the base portion 73 fixed between the exterior sheet 20 and the gather sheet 31 can be secured, and the flexibility and stretchability of the upper body portion 78 and the lower body portion 88 can be secured. can do.

  As the locking portions 72 and 82, a hook material of a mechanical fastener is preferable. The hook material has a large number of engaging protrusions. The shape of the engaging protrusion is (A) Le-shaped, (B) J-shaped, (C) Mushroom-shaped, (D) T-shaped, (E) Double J-shaped (J-shaped And the like may be any shape. Moreover, it can replace with a hook material and can also use an adhesive layer.

  The length 76 in the width direction of the front end of the main body is preferably 50 to 90% of the length 74 of the main body. Thereby, the length 76 of the front end portion is crossed and the upper fastening tape 78 and the lower fastening tape portion 88 are inclined and stretched, the locking portions 72 of the upper fastening tape 78 and the lower fastening tape portion 88, It is possible to increase the degree of freedom of each position where the 82 is engaged with the target sheet 90.

(Target sheet)
As the target sheet 90, a plastic film, a nonwoven fabric or the like in which a large number of loop yarns are provided on the surface is preferable. As a result, when the disposable diaper 100 is worn by the wearer, the upper and lower engaging portions 72 and 82 of the fastening tape 70 can be efficiently locked to the target sheet 90. However, the target sheet 90 is not disposed. Instead, the engaging portions 72 and 82 may be directly engaged with the backsheet 2.

(Relationship between fastening tape and slit when installed)
As shown in FIGS. 6, 7, 9, and 10, at the time of mounting, the upper fastening tape 78 is inclined downward toward the center portion of the target sheet 90 on the target sheet 90 provided on the stomach side of the exterior sheet 20. The lower fastening tape 88 is locked in an upward inclined posture toward the center portion of the target sheet 90.

6 and the like, after the upper fastening tape 78 is inserted into the lower slit 85 of the lower main body 89 of the lower fastening tape 88 when the upper fastening tape 78 is engaged, the upper main body 79 of the upper fastening tape 78 is inserted. The form which engaged the upper side engaging part 72 of this with the target sheet | seat 90 is shown in figure. Hereinafter, for convenience, this state is referred to as a first wearing state.
9 shows the lower main body of the lower fastening tape 88 after the lower fastening tape 88 is inserted into the upper slit 75 of the upper main body 79 of the upper fastening tape 78 when the lower fastening tape 88 is engaged. A form in which the lower engagement portion 82 of the portion 89 is engaged with the target sheet 90 is illustrated. Hereinafter, for convenience, this state is referred to as a second wearing state.

(Relationship between fastening tape and slit at the time of desorption)
As shown in FIG. 8, when the engagement between the upper fastening tape 78 and the target sheet 90 in the first mounted state is released and the front end portion of the upper fastening tape 78 is pulled forward as indicated by the arrow in FIG. Simultaneously with the fastening tape 78, the lower fastening tape portion 88 is also drawn forward through the lower slit 85, and the engagement between the lower fastening tape portion 88 and the target sheet 90 is released. Although illustration is omitted, when the engagement of the lower fastening tape 88 and the target sheet 90 in the second mounted state is released and the front end portion of the lower fastening tape 88 is pulled forward, the lower fastening tape 88 At the same time, the upper fastening tape portion 78 is also pulled forward through the upper slit 75, and the engagement between the upper fastening tape portion 78 and the target sheet 90 is released.

  Thereby, at the time of disposable diaper replacement | exchange, the engagement of the other fastening tape 70 is also cancelled | released by canceling | releasing and engaging the fastening tape 70 of either the upper side fastening tape 78 and the lower side fastening tape 88 to the front side. Therefore, the replacement time of the disposable diaper and the replacement time of the pad embedded in the disposable diaper can be shortened, and the load of the replacement work can be reduced. Further, even when the engagement portion of any fastening tape is released, the upper fastening tape is maintained in the state of being inserted into the lower slit, so that it is possible to particularly shorten the time for adjusting the displacement such as pad displacement.

  As shown in FIG. 11, the slit length L <b> 1 of the lower slit 85 is formed to be larger than the length W <b> 1 orthogonal to the extending direction of the upper main body 79. Thereby, the upper fastening tape 78 can be easily inserted into the lower slit 85 of the lower fastening tape 88, and the replacement time of the disposable diaper and the replacement time of the pad embedded in the disposable diaper can be further shortened. The work load can be further reduced.

<Disposable diapers according to the second embodiment>
Next, the fastening tape 70 of the disposable diaper of 2nd Embodiment is demonstrated. In addition, the same code | symbol is attached | subjected to the same member as the fastening tape 70 of the disposable diaper of 1st Embodiment, and description is abbreviate | omitted. As shown in FIG. 12, upper non-engaging portions 91 </ b> A and 91 </ b> B are formed along the upper slit 75 in the vicinity of the upper and lower sides of the upper slit 75 in the upper body portion 79 of the upper fastening tape 78. Lower non-engaging portions 92 </ b> A and 92 </ b> B are formed along the lower slit 85 near the upper and lower sides of the lower slit 85 in the lower main body portion 89. Thereby, it is possible to prevent the vicinity of the upper engagement portion 72 and the lower slit 85 from being engaged, and similarly, the lower engagement portion 82 is prevented from being engaged with the vicinity of the upper slit 75. be able to. The upper non-engaging portions 91A and 91B and the lower non-engaging portions 92A and 92B can be formed from, for example, embossing or film as long as they are made of a material or material that is difficult to engage.

<Disposable diapers according to the third embodiment>
Next, the fastening tape 70 of the disposable diaper of 3rd Embodiment is demonstrated. In addition, the same code | symbol is attached | subjected to the same member as the fastening tape 70 of the disposable diaper of 1st Embodiment, and description is abbreviate | omitted.

  As shown in FIG. 13, the upper fastening tape 78 is extended in the width direction with a predetermined interval in the vertical direction between the upper inner sheet 93A, the upper outer sheet 93B, and the upper inner sheet 93A and the upper outer sheet 93B. The upper elastic elastic member 94 is formed by the upper elastic elastic member 94 and the upper elastic elastic member 94 disposed above the slit 75 of the upper main body 79 is disposed below the slit 75. It is set to be smaller than the contraction force of 94. Thus, when the lower fastening tape 88 passes through the slit 75 from the front side to the rear side, the upper vicinity of the slit 75 facing the lower engagement portion 82 of the lower fastening tape 88 is arcuate upward. Therefore, when the lower fastening tape 88 is inserted through the slit 75, the engagement between the lower engaging portion 82 and the upper vicinity of the slit 75 can be prevented. 13 schematically shows the contraction force of the upper elastic expansion member 94 disposed above the slit 75 and the contraction force of the upper elastic expansion member 94 disposed below the slit 75. Show.

  Similarly, the lower fastening tape 88 is extended in the width direction with a predetermined interval in the vertical direction between the lower inner sheet 95A, the lower outer sheet 95B, and the lower inner sheet 95A and the lower outer sheet 95B. The lower elastic elastic member 96 is formed by the existing lower elastic elastic member 96 and the elastic force of the lower elastic elastic member 96 arranged above the slit 85 of the lower main body 89 is arranged below the slit 85. The contraction force of the elastic member 96 is set to be smaller. Thus, when the upper fastening tape 78 passes through the slit 85 from the rear side to the front side, the upper vicinity of the slit 85 facing the upper engagement portion 72 of the upper fastening tape 78 is deformed in an arc shape toward the upper side. Therefore, when the upper fastening tape 78 is inserted into the slit 85, the engagement between the upper engagement portion 72 and the upper vicinity portion of the slit 85 can be prevented. Note that the arrows in FIG. 13 indicate the contraction force of the lower elastic elastic member 96 disposed above the slit 85 and the contraction force of the lower elastic elastic member 96 disposed below the slit 85. Here, the contraction force of the lower elastic elastic member 96 arranged above the slit 85 of the lower main body 89 is larger than the contraction force of the lower elastic elastic member 96 arranged below the slit 85. As a result, the vicinity of the upper side of the slit 85 facing the upper engaging portion 72 of the upper fastening tape 78 is deformed in an arc shape toward the upper side, so that the upper fastening tape 78 is inserted into the slit 85 from the front side. For the sake of convenience, it is possible to prevent the upper engaging portion 72 and the upper vicinity of the slit 85 from engaging with each other when inserted to the rear side.

<Disposable diapers according to the fourth embodiment>
Next, the fastening tape 70 of the disposable diaper of 4th Embodiment is demonstrated. In addition, the same code | symbol is attached | subjected to the same member as the fastening tape 70 of the disposable diaper of 1st Embodiment, and description is abbreviate | omitted.

  As shown in FIG. 14, two cut portions 97 </ b> A and 97 </ b> B are formed in the upper end portion of the upper fastening tape 78 at a predetermined interval in the width direction, and in the width direction at the lower end portion of the upper fastening tape 78. Two cut portions 97C and 97D are formed at a predetermined interval. The notches 97A and 97B are formed with a downward slope toward the center in the width direction, and the notches 97C and 97D are formed with an upward slope toward the center in the width direction. Further, two cut portions 98A and 98B are formed in the upper end portion of the lower fastening tape 88 with a predetermined interval in the width direction, and a predetermined interval in the width direction is formed in the lower end portion of the upper fastening tape 78. Two notches 98A and 98B are formed apart from each other. The notches 98A and 98B are formed with a downward slope toward the center in the width direction, and the notches 98C and 98D are formed with an upward slope toward the center in the width direction.

  Accordingly, when the upper engagement portion 72 of the upper fastening tape 78 is disengaged from the first mounting state, the upper fastening tape 78 is locked inside the slit 85 of the lower fastening tape 88. When the disposable diaper is attached after the replacement of the used pad, it is not necessary to insert the upper fastening tape 78 through the slit 85 again, so that the time for adjusting the displacement such as pad displacement can be further shortened. Further, when the engagement of the lower engagement portion 82 of the lower fastening tape 88 is released from the second mounting state, the lower fastening tape 88 is locked inside the slit 75 of the upper fastening tape 78. When the disposable diaper is mounted after the used pad is replaced, it is not necessary to insert the lower fastening tape 88 through the slit 75 again, so that the time for adjusting the displacement such as pad displacement can be further shortened.

  The present invention can be used for disposable diapers.

DESCRIPTION OF SYMBOLS 1 Top sheet 2 Back sheet 3 Absorber 20 Exterior sheet 70 Fastening tape 72 Upper engaging part 74 Main part length 75 Upper slit 76 Main part tip length 78 Upper fastening tape part 79 Upper main part 82 Lower side Engaging portion 85 Lower slit 88 Lower fastening tape portion 89 Lower main body portion 100 Disposable diaper 91A Upper non-engaging portion 91B Upper non-engaging portion 92A Lower non-engaging portion 92B Lower non-engaging portion 93A Upper inner side Sheet 93B Upper outer sheet 94 Upper elastic elastic member 95A Lower inner sheet 95B Lower outer sheet 96 Lower elastic elastic member 97A First upper cut part 97B First upper cut part 97C First lower cut part 97D First lower side Cut portion 98A Second upper cut portion 98B Second upper cut portion 98C Second lower cut portion 98D Second lower cut portion L1 Slit length W1 Cross section width of main body

Claims (6)

A liquid-permeable top sheet provided on the body side, a liquid-impermeable back sheet provided on the non-body side, and an absorber that absorbs excrement provided between the top sheet and the back sheet And in a disposable diaper provided with an exterior sheet formed of a nonwoven fabric provided on the non-body side of the back sheet,
A fastening tape extending in the width direction is provided on the back side of the exterior sheet,
The fastening tape is formed of an upper fastening tape located on the upper side and a lower fastening tape located on the lower side,
The upper fastening tape forms an upper engagement portion on the inner surface of the end portion of the upper body portion extending in the width direction,
The lower fastening tape forms a lower engaging portion on the inner surface of the end of the lower main body extending in the width direction,
At the time of mounting, the upper fastening tape is locked in a downward inclined posture on the abdominal side of the exterior sheet, and the lower fastening tape is in an upward inclined posture,
At least one of an upper slit extending in the width direction through which the lower fastening tape is inserted into the upper body portion and a lower slit extending in the width direction through which the upper fastening tape is inserted into the lower body portion is formed. A disposable diaper characterized by that.   The disposable diaper according to claim 1, wherein the upper slit is formed larger than a cross-sectional outer peripheral portion of the lower main body portion, and the lower slit is formed larger than a cross-sectional outer peripheral portion of the upper main body portion.   An upper non-engaging portion is formed along the upper slit in the vicinity of the upper slit in the upper main body, and the lower non-engaging along the lower slit in the vicinity of the lower slit in the lower main body. The disposable diaper of Claim 1 or 2 which formed the joint part.   The disposable diaper according to claim 3, wherein the upper non-engaging portion is formed from an emboss or a film, and the lower non-engaging portion is formed from an emboss or a film. The upper main body is formed of an upper inner sheet, an upper outer sheet, and an upper elastic member extending in the width direction between the upper inner sheet and the upper outer sheet, and is located on the upper slit. Set the difference between the elastic force of the elastic member and the elastic force of the upper elastic member located below the upper slit,
The lower main body is formed of a lower inner sheet, a lower outer sheet, and a lower elastic member extending in a width direction between the lower inner sheet and the lower outer sheet, and the lower slit The elastic force of the lower elastic member located on the upper side of the lower slit and the elastic force of the lower elastic member located on the lower side of the lower slit are set to be different from each other. The disposable diaper described in the item. A first upper cut portion is formed at an upper portion of the upper main body portion, a first lower cut portion is formed at a lower portion of the upper main body portion, and the first upper cut portion is inclined downward toward a central portion in the width direction. Forming, and forming the first lower cut portion in an upward slope toward the center in the width direction,
A second upper cut portion is formed in the upper portion of the lower main body portion, a second lower cut portion is formed in the lower portion of the lower main body portion, and the second upper cut portion is lowered toward the center in the width direction. The disposable diaper according to any one of claims 1 to 5, wherein the disposable diaper is formed to be inclined and the second lower cut portion is formed to be inclined toward the center in the width direction.

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