JP7081920B2 - Pants type absorbent article - Google Patents

Description

The present invention relates to a pants-type absorbent article having a pair of side seals, a waist opening and a pair of leg openings.

The pants-type disposable diaper, which is a kind of pants-type absorbent article, conventionally includes an absorbent body provided with an absorbent body and an exterior body arranged on the non-skin facing surface side of the absorbent body, and has a front body. Both sides of the exterior at the (ventral) side and both sides of the exterior at the back (dorsal) are joined to form a pair of side seals, a waist opening and a pair of leg openings. The one with the configuration is known. In a pants-type disposable diaper having such a configuration, usually, the space between the waist opening and the leg opening is a waist circumference portion arranged around the wearer's torso when worn, and a plurality of elastic members are provided around the waist circumference. Is intermittently arranged in the vertical direction in a laterally extended state, thereby imparting lateral elasticity to the waist circumference portion and forming gathers around the waist circumference.

In Patent Document 1, both ends of an elastic member extending laterally around the waist of the diaper are provided for the purpose of making a pants-type disposable diaper that can be easily torn at the side seal portion and is easily removed. , It is described that it is not positioned in the side seal portion but is positioned inward in the lateral direction from the side seal portion. Further, in Patent Document 2, for the same purpose as in Patent Document 1, a breaking strength changing portion having a breaking strength different from that of the peripheral portion is provided in the vicinity of each of the pair of side sealing portions and inside the side sealing portion. It is described that the elastic member is not arranged between each breaking strength changing portion and the side seal portion in the vicinity thereof. In the pants-type disposable diapers described in Patent Documents 1 and 2, the entire region of the waist circumference portion near the side seal portion and adjacent to the side seal portion in the lateral direction is a non-arrangement region of the elastic member for forming gathers around the waist circumference. It is common in that it is. The vertical direction is a direction corresponding to the front-back direction of the wearer of the absorbent article, and the horizontal direction is a direction orthogonal to the vertical direction.

Japanese Unexamined Patent Publication No. 2001-33393 Japanese Unexamined Patent Publication No. 2011-234847

When the wearer wears a pants-type disposable diaper by himself / herself, usually, with both feet of the wearer passed through the pair of leg openings in the diaper, the inner surface of the opening edge of the waist opening of the diaper or its vicinity ( Grip it from the side facing the skin by hooking it with the tip of your finger, and pull it toward the wearer's crotch side. When a third party, not the wearer, puts on a pants-type disposable diaper, for example, when a mother or caregiver puts on an infant or care recipient, it is usually done by a third party, not the wearer. Substantially the same operation as described above is performed.

In order to smoothly perform a series of operations when wearing such a pants-type disposable diaper, it is important that the opening edge of the waist opening and its vicinity can be easily grasped by fingers. However, in the conventional pants-type disposable diaper, an elastic member for forming gathers around the waist, which is extended in the lateral direction, is provided at or near the opening edge of the waist opening for the purpose of improving the fit of the waist circumference. Since it is relatively densely arranged in the vertical direction, it is not easy to grip the opening edge of the waist opening and its vicinity with fingers from the inner surface side thereof, and in particular, the portion to be gripped with fingers is smooth on the surface. When the sheet material is made of high-quality sheet material, the fingers trying to grip the portion slip, which may take time to wear.

Therefore, an object of the present invention relates to providing a pants-type absorbent article that can be smoothly worn.

The present invention has a vertical direction corresponding to the front-back direction of the wearer and a lateral direction orthogonal to the vertical direction, and a ventral portion arranged on the ventral side of the wearer and a dorsal portion arranged on the dorsal side at the time of wearing. And the crotch portion located between them in the vertical direction, the absorbent main body including the absorbent body, and the outer body arranged on the non-skin facing surface side of the absorbent main body, the ventral side. A pair of side seals, a waist opening and a pair of leg openings are formed by joining both side edges of the exterior body in the portion and the exterior bodies in the back side portion along the vertical direction, and the waist opening is formed. A pants-type absorbent article having a waist circumference portion arranged around the wearer's waistline between the portion and the leg opening, wherein the absorber or the absorber body in the waist circumference portion is used. Non-stretchable regions having no elasticity are arranged close to the side seal portions on both lateral sides of the extension region when virtually extended in the vertical direction, and among the pair of side seal portions. Between the non-stretchable region arranged close to one and the non-stretchable region arranged close to the other, there is a stretchable region having elasticity in the lateral direction, and the non-stretchable region and the non-stretchable region It is a pants-type absorbent article in which a stretchable region having elasticity in the lateral direction exists between the waist opening and the non-stretchable region and the leg opening.

According to the present invention, there is provided a pants-type absorbent article that can be smoothly worn. The pants-type absorbent article of the present invention is not easy to catch the tip of a finger on a portion (near the side seal portion in the waist circumference portion) that is often grasped by fingers when wearing this type of absorbent article. Since the non-stretchable region has a stretchable region and the appearance of the non-stretchable region is conspicuous in comparison with the stretchable region existing around the stretchable region, when the absorbent article is worn, a series of wearing operations can be performed using the non-stretchable region. It can be done easily.

FIG. 1 is a perspective view schematically showing a natural state of a pants-type disposable diaper, which is an embodiment of a pants-type absorbent article. FIG. 2 is a developed plan view schematically showing the skin facing surface side (inner surface side) of the diaper shown in FIG. 1 in the expanded and extended state. FIG. 3 is an exploded perspective view schematically showing the diaper shown in FIG. 1 in an exploded manner. FIG. 4 is a developed plan view schematically showing the skin facing surface side (inner surface side) in the developed and extended state of another embodiment of the pants-type absorbent article of the present invention. FIG. 5 is a developed plan view schematically showing the skin facing surface side (inner surface side) in the developed and extended state of still another embodiment of the pants-type absorbent article of the present invention. FIG. 6 is a developed plan view schematically showing the skin facing surface side (inner surface side) in the developed and extended state of still another embodiment of the pants-type absorbent article of the present invention. FIG. 7 is a developed plan view schematically showing the skin facing surface side (inner surface side) in the developed and extended state of still another embodiment of the pants-type absorbent article of the present invention. FIG. 8 is a plan view schematically showing the side seal portion of the diaper shown in FIG. 7 and the skin facing surface side (inner surface side) in the vicinity thereof in an enlarged manner, and is a schematic view of a non-stretchable region which is a main part of the diaper. It is a typical plan view.

Hereinafter, the present invention will be described based on the preferred embodiment thereof with reference to the drawings. 1 to 3 show a pants-type disposable diaper 1 which is an embodiment of the pants-type absorbent article of the present invention. As shown in FIGS. 1 to 3, the diaper 1 has a vertical direction X extending from the wearer's ventral side to the dorsal side via the crotch portion and a lateral direction Y orthogonal to the vertical direction X. It also has a ventral portion F arranged on the ventral side of the wearer at the time of wearing, a dorsal portion R arranged on the dorsal side, and a crotch portion M located between them in the vertical direction X.

The diaper 1 has an absorbent main body 2 including an absorbent body 23 capable of absorbing and holding excreted body fluid, and a non-skin facing surface side of the absorbent main body 2, that is, a side farther from the wearer's body than the absorbent main body 2. It is provided with an exterior body 3 arranged in the. In the diaper 1, both side edges of the exterior body 3 on the ventral side F and the exterior body 3 on the dorsal side R along the vertical direction X are known joining means such as an adhesive, a heat seal, and an ultrasonic seal. A pair of side seals S, S, a waist opening WH through which the wearer's torso passes, and a pair of leg openings through which the wearer's lower limbs pass, as shown in FIG. LH and LH are formed.

In the present specification, the "skin facing surface" is a surface of the absorbent article or a component thereof (for example, an absorbent main body) that is directed toward the skin side of the wearer when the absorbent article is worn, that is, relatively of the wearer. The side closer to the skin, the "non-skin facing surface" is the surface of the absorbent article or its constituents that faces the opposite side of the skin when the absorbent article is worn, that is, relatively from the wearer's skin. The distant side. The term "when worn" as used herein means a state in which a normal proper wearing position, that is, a correct wearing position of the absorbent article is maintained.

As shown in FIG. 2, the diaper 1 has a waist circumference portion W arranged around the waist circumference of the wearer when worn between the waist opening WH and the leg opening LH. The waist circumference W is a region located at the same position in the vertical direction X as the side seal portion S in the diaper 1, and in the present embodiment, the ventral side F is the ventral waist circumference W and the dorsal side R. It is the waist circumference W on the dorsal side. That is, the waist circumference W of the diaper 1 is divided into a ventral side F and a dorsal side R. Further, the waist circumference portion W exists in the vertical direction X from the vertical end 1E of the diaper 1 over a predetermined distance, and forms the opening edge portion of the waist opening portion WH and its vicinity, and the waist portion W1. It is divided into a lower waist W2 (closer to the leg opening LH) farther from the vertical end 1E of the diaper 1 than the portion W1. Generally, the waist portion W1 is arranged in a region within 10 to 40 mm inward of the vertical direction X from the vertical end 1E of the diaper 1.

The absorbent body 2 has a rectangular shape in a plan view in the unfolded and extended state of the diaper 1 as shown in FIG. 2, extends in the longitudinal direction X from the ventral side F to the dorsal side R, and extends in the longitudinal direction thereof. Is arranged at the center of the outer body 3 in the horizontal direction Y so as to coincide with the vertical direction X of the diaper 1 in the unfolded and stretched state, and is joined to the outer body 3 by an adhesive. The "expanded and stretched state" of the diaper 1 means that the diaper 1 is separated by the side seal portion S to be in the deployed state, and the diaper 1 in the deployed state is stretched with the elastic members of each part to have design dimensions (the influence of the elastic members is completely affected). It means the state of being expanded until it becomes the same as the dimensions when it is expanded in a plane with it removed.

As shown in FIGS. 2 and 3, the absorbent body 2 has a liquid-permeable surface sheet 21 that forms a skin-facing surface, and a liquid-impermeable, impermeable, or water-repellent surface that forms a non-skin-facing surface. The back surface sheet 22 and the liquid-retaining absorber 23 interposed between the two sheets 21 and 22 are provided, and these are integrated by a known joining means such as an adhesive. Further, a pair of leak-proof cuffs 24, 24 made of a liquid-resistant or water-repellent and breathable leak-proof cuff forming sheet are formed on both sides of the absorbent body 2 on the skin-facing surface along the vertical direction X. Is provided. One or more thread-shaped elastic members 25 for forming a leak-proof cuff are arranged in the vicinity of the free end of each leak-proof cuff 24 in an extended state in the vertical direction X. The leak-proof cuff 24 stands up at least at the inseam M due to the elastic member 25 arranged in the extended state contracting when the diaper 1 is worn, whereby the excrement liquid such as urine flows out in the lateral direction Y. To prevent.

As the front surface sheet 21, the back surface sheet 22, and the absorber 23, various types conventionally used for this type of absorbent article can be used without particular limitation. For example, various non-woven fabrics, perforated films and the like can be used as the front surface sheet 21, and a resin film or a laminate of a resin film and a non-woven fabric or the like can be used as the back surface sheet 22. The absorber 23 is typically configured to include a liquid-retaining absorbent core mainly composed of an absorbent material, and further covers a skin facing surface and a non-skin facing surface of the absorbent core. It may include a sheet. As the absorbent material which is the main component of the absorbent core, those used as the material of the absorbent body in this kind of absorbent article can be used without particular limitation, and for example, wood pulp and hydrophilized synthetic fiber can be used. , Water-absorbent polymer and the like. As a typical form of the absorbent core, a fiber aggregate of hydrophilic fibers such as wood pulp, or a fiber aggregate in which a particulate water-absorbing polymer is retained can be exemplified. Further, as the leak-proof cuff forming sheet, a sheet that can be used for the back surface sheet 22 can be used.

The exterior body 3 forms the outer shape of the diaper 1 in the expanded and extended state as shown in FIG. 2, and the peripheral edge of the exterior body 3 is the contour line of the diaper 1 in that state, that is, the ventral portion F, the inseam M, and the crotch portion M. The contour lines of each of the dorsal portions R are formed. As shown in FIG. 2, the exterior body 3 has a rectangular shape in the ventral portion F and the dorsal portion R in which the length in the lateral direction Y is longer than that in the vertical direction X, and the ventral portion F and the dorsal portion are formed. In the crotch portion M located between the crotch portion M, both side edges of the exterior body 3 along the vertical direction X, that is, a pair of leg edge portions LS and LS are curved in a convex arc shape toward the center of the lateral direction Y. In a plan view as shown in FIG. 2, the central region of the vertical direction X has a shape constricted inward in the horizontal direction Y.

As shown in FIG. 3, the exterior body 3 is formed by laminating an outer layer sheet 31 that forms an outer surface of the diaper 1, that is, a non-skin facing surface, and an inner layer sheet 32 that is arranged to face the skin facing surface of the outer layer sheet 31 in a worn state. It is composed including the body. In the wearing state of the diaper 1, the outer layer sheet 31 is located on the side far from the wearer's body to form the non-skin facing surface (outer surface) of the diaper 1, and the inner layer sheet 32 is located on the side closer to the wearer's body. Then, the skin-facing surface (inner surface) of the diaper 1 is formed. The outer layer sheet 31 and the inner layer sheet 32 are joined to each other at a predetermined portion via a joining means such as an adhesive.

In the present embodiment, as shown in FIGS. 2 and 3, the outer layer sheet 31 extends to the ventral side F and the dorsal side R from the edge of the inner layer sheet 32 in the vertical direction X, and the inner layer sheet 32 extends. It has a folded-back portion 31E that is folded back on the skin-facing surface side, and the folded-back portion 31E covers the end portion of the absorbent body 2 in the vertical direction X.

The sheets 31 and 32 constituting the exterior body 3 may be sheets of the same type or different types of sheets. The sheets 31 and 32 typically do not have elasticity, but may have elasticity on the premise that they do not impair the predetermined effect of the present invention. Examples of the non-stretchable non-woven fabric that can be used as the sheets 31 and 32 include non-woven fabrics produced by various manufacturing methods, and specific examples thereof include spunbonded non-woven fabrics, air-through non-woven fabrics, and needle punched non-woven fabrics.

As shown in FIGS. 1 to 3, a plurality of thread-like or band-shaped elastic members 33 around the waist are extended in the lateral direction Y on the exterior body 3 in the waist circumference W (ventral side F, dorsal side R). It is intermittently arranged in the vertical direction X. In this way, the elastic member 33 around the waist is arranged and fixed to the waist around portion W in a state where the elasticity is exhibited, so that the waist circumference portion W has them except for the non-stretchable region 5, which will be described later. A substantially continuous annular waistline gather is formed over the entire circumference. Among the gathers around the waist, those formed on the waist portion W1 are also called waist gathers and the like. The portion of the waist circumference W other than the non-stretchable region 5 described later is a region in which the elasticity of the waist circumference elastic member 33 can be exhibited, and is a stretchable region 4 in which the waist circumference gathers (waist gathers) are formed. , Has elasticity in the lateral direction Y. Although the exterior body 3 in the waist circumference portion W has a non-stretchable region 5 to be described later, the exterior body 3 as a whole includes a waist circumference elastic member 33 fixed in a laterally extended state. This is an elastic sheet that has elasticity in the lateral direction Y and has elasticity in the same direction.

Further, one or a plurality of thread-like or band-shaped leg elastic members 34 are arranged in an extended state in the leg edge portion LS forming the opening edge portions of the pair of leg openings LH and LH, respectively. At the opening edges of each of the pair of leg openings LH and LH, substantially continuous annular leg gathers are formed over the entire circumference thereof. All of these elastic members 33 and 34 are sandwiched and fixed between the outer layer sheet 31 constituting the exterior body 3 and the inner layer sheet 32 by a joining means such as an adhesive.

As one of the main features of the diaper 1, as shown in FIGS. 1 to 3, the absorber 23 or the absorber 23 in the waist circumference W (ventral side F, dorsal side R) is virtualized in the vertical direction. Non-stretchable regions 5 having no elasticity are arranged close to the side seal portion S on both outer sides of the extension region in the lateral direction Y when the extension region is extended, and the following three locations 1) to 3). In addition, there is a stretchable region 4 having elasticity in the lateral direction Y.
1) Between the non-stretchable region 5 arranged close to one of the pair of side seal portions S and the non-stretchable region 5 arranged close to the other 2) The non-stretchable region 5 and the waist opening WH Between (vertical end 1E of diaper 1) 3) Between non-stretchable region 5 and leg opening LH

Regarding 1), as shown in FIG. 2, in the diaper 1, a pair of non-stretchable regions 5 arranged in close proximity to the pair of side seal portions S, S in each of the ventral side portion F and the dorsal side portion R. The entire area between the 5 is the expansion / contraction region 4. However, in order to satisfy the above 1), at least a part of the region sandwiched between the pair of non-stretchable regions 5 and 5 may be the stretchable region 4, and the non-stretchable region 5 partially exists in the region. You may. For example, the absorbent main body 2 is arranged between the pair of non-stretchable regions 5 and 5, and the arrangement region of the absorbent main body 2 (the central portion of the lateral Y between the pair of non-stretchable regions 5 and 5) is non-stretchable. It may be the area 5.

In the present invention, as described above, the "stretchable region" is a region having elasticity in the lateral direction, and the "non-stretchable region" is a region having no elasticity. In the present specification, "stretchability" is defined as a predetermined region. It means the property of being expandable in a direction and contracting when the extension is released. More specifically, the "stretchable region" is a region in which the sheet constituting the exterior body follows the expansion and contraction of the elastic member, that is, a region in which the elasticity of the elastic member can be exhibited. Is. In the sheet constituting the exterior body in the stretchable region, when the elastic member is contracted, the portion where the elastic member has lost its place forms folds (gathers). The "non-stretchable region" is a region that does not substantially follow the expansion and contraction of the elastic member, that is, a region in which the elasticity of the elastic member is not exhibited.

In the present embodiment, the length of the absorbent body 23 in the lateral direction Y is the same as that of the absorbent main body 2, and as shown in FIG. 2, in the waist circumference portion W of each of the ventral side portion F and the dorsal side portion R. A pair of non-stretchable regions 5 are arranged outside of the side edges 2S and 2S along the vertical direction X of the absorbent main body 2 and the virtual extension line (not shown) thereof in the horizontal direction Y. Further, in the present embodiment, the diaper 1 is formed symmetrically with respect to the horizontal center line CLI (see FIG. 2) that bisects the diaper 1 in the horizontal direction Y and extends in the vertical direction X. Considering that the diaper 1 is formed symmetrically and that both hands are often used when wearing the diaper 1, from the viewpoint of improving workability when wearing the diaper 1, each of the pair of side seal portions S and S As shown in FIG. 2, it is preferable that the pair of non-stretchable regions 5 and 5 arranged in close proximity to each other are formed symmetrically with respect to the horizontal center line CLi.

Further, in the present embodiment, as shown in FIGS. 1 to 3, a plurality of waist circumference elastic members 33 are laterally Y on the exterior body 3 in the waist circumference portion W (ventral side portion F, dorsal side portion R). It is intermittently arranged in the vertical direction X in the stretched state, and the stretchable region 4 is a region in which the stretchability of the elastic member 33 can be exhibited. In this regard, as described above, in the present embodiment, the elastic member 33 around the waist exhibits elasticity in the portion other than the non-stretchable region 5 in the waist circumference W, except for the arrangement region of the absorbent body 2 described later. The stretchable region 4, which is a possible region, has elasticity in the lateral direction Y, and the waist gathers are formed in the natural state of the diaper 1. The side seal portion S is usually a non-stretchable region because the sheets such as the exterior body 3 constituting the side seal portion S are fused and cured.

And in this embodiment, as shown in FIGS. 2 and 3, the non-stretchable region 5 is a region where the elasticity of the waist circumference elastic member 33 is hindered. In the present embodiment, the elasticity of the elastic member 33 is hindered by forming the non-stretchable portion 50 on the elastic member 33 around the waist. Such intentional inhibition of the elasticity of the elastic member, such as the formation of the non-stretchable portion 50, has conventionally occurred in this type of absorbent article in a plan view with a relatively rigid member such as an absorbent body. It is used to intentionally suppress the elasticity of the elastic members arranged in the overlapping portions and to prevent the inconvenience of wrinkles caused by the expansion and contraction of the elastic members in the absorbent main body. In the present embodiment, as shown in FIG. 3, the waist circumference elastic member 33 of the waist circumference portion W (ventral side portion F, dorsal side portion R) is the same as the absorbent body 2 in the arrangement region of the absorbent body 2. The overlapping portion also has a non-stretchable portion 50, and the elasticity of the elastic member 33 is also hindered in the overlapping portion. As a method for forming the non-stretchable portion 50, a method usually used for inhibiting the elasticity of the elastic member in this type of absorbent article can be used without particular limitation, and for example, the waistline elastic member 33 can be used. A method of cutting and dividing into a plurality of fragments scattered discontinuously in the lateral direction Y can be mentioned. Therefore, the non-stretchable portion 50 may be a non-existent portion of the waist circumference elastic member 33 or a cut piece of the waist circumference elastic member 33 (a plurality of fragments of the elastic member 33 intermittently arranged in the lateral direction Y).

When wearing a diaper 1 having the above-mentioned configuration, it is usually at or near the opening edge of the waist opening WH (diaper 1 vertical end 1E) and next to the diaper 1 on which the absorbent body 2 is arranged. A portion other than the central portion in the direction Y, specifically, a portion located between the side seal portion S, the side edge 2S of the absorbent body 2 and its extension line (hereinafter, also referred to as “side region”) is a finger. Grasp the diaper by hooking it with the tip of the diaper, and pull the diaper 1 toward the crotch side of the wearer. Therefore, if the opening edge of the waist opening WH in the side region and the vicinity thereof have a structure that can be easily grasped by fingers, the diaper 1 can be smoothly worn. In this respect, as described above, in the diaper 1, a part of the side region in the waist circumference W is a non-stretchable region 5 having no elasticity, and is close to the pair of side seal portions S, S. There are stretchable regions 4 between the pair of non-stretchable regions 5 and 5 arranged in the vertical direction and on both outer sides of the non-stretchable region 5 in the vertical direction X. That is, each non-stretchable region 5 is surrounded by the stretchable region 4. When the diaper 1 is worn, the non-stretchable region 5 swells more than the peripheral portion due to the contraction of the elastic member 33 around the waist in the stretchable region 4 around the non-stretchable region 5, and the fingers The structure makes it easy to catch the tip of the diaper. As a result, the diaper 1 can be firmly gripped by hooking the tip of a finger from the skin facing surface side (inner surface side) to the inflated non-stretchable region 5, and the wearer can firmly grip the gripped diaper 1. Can be pulled smoothly to the crotch side of the diaper. Further, since the non-stretchable region 5 swells when the diaper 1 is worn, its presence is conspicuous in comparison with the non-bulging stretchable region 4 around the non-stretchable region 5. It is easy to attract attention, and it is possible to encourage the active use of the non-stretchable region 5 when wearing the diaper 1.

Further, since the non-stretchable region 5 exists in the waist circumference portion W of the diaper 1 in this way, the wearing operation of the diaper 1 can be smoothly performed, but the elasticity of the waist circumference portion W may decrease. I am concerned. However, in the diaper 1, 1) between the pair of non-stretchable regions 5, 5 arranged close to the pair of side seal portions S, S, 2) the non-stretchable region 5 and the waist opening WH (vertical of the diaper 1). There are elastic regions 4 between the direction end 1E) and 3) between the non-stretchable region 5 and the leg opening LH, and the elastic region 4 surrounding these non-stretchable regions 5 is attached to the wearer's body. This concern has been dispelled because of the good fit and adhesion.

As described above, since the non-stretchable region 5 is typically used as a portion to be gripped by the fingers when wearing the diaper 1, the position of the non-stretchable region 5 is the fit of the waist circumference portion W and the like. It is preferable that the adjustment is made so that the diaper can be easily grasped by the fingers within a range that does not substantially lower the diaper. From such a viewpoint, the non-stretchable region 5 is preferably 10 mm or more and 80 mm or less, more preferably 20 mm or more and 60 mm or less, more preferably 20 mm or more and 60 mm or less, inward in the vertical direction X from the waist opening WH (vertical end 1E of the diaper 1). Is preferably located within 30 mm or more and 50 mm or less.

From the same viewpoint, the non-stretchable region 5 is preferably within 60 mm, more preferably within 50 mm, more preferably within 60 mm in the lateral direction Y from the inner edge S1 (see FIG. 2) of the side seal portion S in the vicinity thereof. Is preferably located within 40 mm. The inner edge S1 of the side seal portion S is located on the inner side in the lateral direction Y of the side edges along the vertical direction X of the side seal portion S, and is a side edge on the side relatively close to the absorbent body 2. be.

Further, the size of the non-stretchable region 5 is preferably adjusted from the same viewpoint, and the vertical length 5x (see FIG. 2) of the non-stretchable region 5 is preferably 15 mm or more, more preferably 20 mm or more, and more preferably. Is 25 mm or more, preferably 60 mm or less, more preferably 55 mm or less, and more preferably 50 mm or less. The lateral length 5y (see FIG. 2) of the non-stretchable region 5 is preferably 20 mm or more, more preferably 25 mm or more, more preferably 30 mm or more, and preferably 60 mm or less, still more preferably 55 mm or less, more preferably. It is 50 mm or less. Here, the vertical length 5x and the horizontal length 5y of the non-stretchable region 5 place the diaper 1 in a natural state (the elastic member of each part is non-extended) as shown in FIG. 1 on a flat place, respectively. It means the length when placed.

The non-stretchable region 5 is preferably arranged at least on the ventral side F. When the wearer wears the diaper 1 by himself / herself, the part that the wearer grips with his / her fingers when pulling the diaper 1 toward the crotch side is usually the ventral side F, and a third party other than the wearer wears the diaper. Even when wearing 1, the third party often grips the opening edge of the waist opening WH in the side region of the ventral side F with his / her fingers. Therefore, as described above, it is preferable that the non-stretchable region 5 used as the gripping portion of the diaper 1 is arranged on the ventral side portion F. In the present embodiment, as shown in FIG. 2, the non-stretchable region 5 is arranged on both the ventral side F and the dorsal side R, so that various wearing operations can be supported.

4 to 8 show diapers 1A, 1B, 1C and 1D, which are other embodiments of the present invention. Regarding these other embodiments, the components different from the above-mentioned diaper 1 will be mainly described, and the same components will be designated by the same reference numerals and the description thereof will be omitted. The description of the diaper 1 is appropriately applied to the components not particularly described. Diaper 1A (see FIG. 4), diaper 1B (see FIG. 5), diaper 1C (see FIG. 6) and diaper 1D (see FIGS. 7 and 8), respectively, in terms of the specific configuration of the non-stretchable region 5. , Different from the above-mentioned diaper 1.

In the diaper 1A, as shown in FIG. 4, the waistline elastic member 33 is not arranged in the non-stretchable region 5. In the non-stretchable region 5 where the waistline elastic member 33 is not arranged, the fixing means (for example, an adhesive) of the elastic member 33 is not arranged at the position where the non-stretchable region 5 is planned to be formed in the manufacturing process of the diaper 1A. Can be formed with. The diaper 1A also has the same effect as the diaper 1.

In both the diapers 1B and 1C, a plurality of waistline elastic members 33 are intermittently arranged in the vertical direction X in a laterally extended state on the exterior body 3 in the waistline portion W (ventral side F, dorsal side R). The stretchable region 4 is a region in which the elastic member 33 can exhibit elasticity, and the above points are the same as those of the diaper 1.

In the diaper 1B, as shown in FIG. 5, the elastic member 33 around the waist, which is arranged at the same position in the vertical direction X as the non-stretchable region 5 in the stretchable region 4, extends the stretchable region 4 in the lateral direction Y. And extends outward in both lateral directions Y of the stretchable region 4, and the stretched portion 33E of the elastic member 33 from the stretchable region 4 is not located in the non-stretchable region 5, and the elastic member 33 is not located in the non-stretchable region 5. It is located between the stretchable region 5 and the leg opening LH (leg edge LS).

In the diaper 1C, as shown in FIG. 6, the elastic member 33 around the waist, which is arranged at the same position in the vertical direction X as the non-stretchable region 5 in the stretchable region 4, extends the stretchable region 4 in the lateral direction Y. And extends outward in both lateral directions Y of the stretchable region 4, and the stretched portion 33E of the elastic member 33 from the stretchable region 4 is not located in the non-stretchable region 5, and the elastic member 33 is not located in the non-stretchable region 5. It is located between the stretchable region 5 and the waist opening WH (vertical end 1E of the diaper 1C).

The non-stretchable region 5 in which the waistline elastic member 33 is not arranged, as in the diapers 1B and 1C, is the two sheets (outer layer sheet 31, inner layer sheet 32) constituting the exterior body 3 in the manufacturing process of the diaper 1B or 1C. When the elastic member 33 is introduced between the elastic members 33, the elastic member 33 can be formed by swinging the elastic member 33 so that the elastic member 33 does not exist at the planned formation position of the non-stretchable region 5. The swing of the elastic member can be performed by using a known method. The same effect as that of diaper 1 is produced by diapers 1B and 1C.

In particular, in the diapers 1B and 1C, the non-stretchable region 5 in the waist circumference portion W and the vertically adjacent portion adjacent to each other in the vertical direction X are 1) the stretchable region 4 located at the same position in the vertical direction X and the vertically adjacent portion. A waistline elastic member 33 that crosses the non-stretchable region 5 and the stretchable region 4 at the same position in the vertical direction X in the lateral direction Y, that is, the extension portion 33E. And, since the elastic member 33 around the waistline in the lateral direction Y is arranged more than the other parts of the waistline portion W, the vertically adjacent portion is the other portion of the waistline portion W. Since the contractile force is higher than that of the above-mentioned non-stretchable region 5, the non-stretchable region 5 adjacent to the vertically adjacent portion tends to swell as shown in FIG. 1 when the diapers 1B and 1C are worn. Can be played even more reliably.

In the diaper 1D, as shown in FIG. 7, the waistline elastic member 33 is not arranged in the non-stretchable region 5, which is the same as the diaper 1A (see FIG. 4). As shown in the enlarged view of FIG. 8, the diaper 1D has a stretchable region 4 having elasticity in the lateral direction Y between the outer side of the non-stretchable region 5 in the lateral direction Y and the side seal portion S. Characterized by. That is, the non-stretchable region 5 in the diaper 1D is sandwiched between the stretchable regions 4 not only in the vertical direction X but also in the horizontal direction Y. That is, as shown in FIG. 8, between the non-stretchable region 5 and the side seal portion S in the vicinity thereof, the waistline elastic member 33 is arranged in the lateral direction Y in an extended state, thereby providing elasticity in the lateral direction Y. The stretchable region 4 has, and therefore, the waistline elastic member 33 is arranged in the lateral direction Y around the non-stretchable region 5. As described above, when the non-stretchable region 5 is adjacent to the stretchable region 4 in both the vertical direction X and the horizontal direction Y and is surrounded by the stretchable region 4, the above-mentioned bulge of the non-stretchable region 5 is relatively large. It is easy to become a thing, and the action and effect of the non-stretchable region 5 can be further improved.

The pants-type absorbent article of the present invention is applicable not only to disposable diapers but also to general absorbent articles having a pants-type structure such as disposable shorts and shorts-type napkins, and even those for infants are adults. It may be for.

Although the present invention has been described above based on the embodiment, the present invention can be appropriately modified without being limited to the embodiment.
For example, in the above embodiment, the non-stretchable region 5 arranged close to the side seal portion S does not exist in the extension region when the absorbent body 2 (absorbent body 23) is virtually extended in the lateral direction Y. In other words, it does not exist at the same position in the vertical direction X as the absorbent body 2 (absorbent body 23), but exists outside the vertical direction X of the extension region, but the non-stretchable region in the extension region. 5 may be present.
Further, in the diaper 1, as shown in FIG. 2, the exterior body 3 has a continuous shape extending over the ventral side F, the inseam M, and the dorsal side R. Instead, the exterior body 3 has a continuous shape. It is a form divided into a ventral seat member and a dorsal seat member, and the absorbent main body 2 may be bridged and fixed to both seat members.
Moreover, all the portions having only one embodiment described above can be mutually used as appropriate.

1,1A, 1B, 1C, 1D Pants-type absorbent articles (pants-type disposable diapers)
F Abdominal part M Inseam R Back side W Waist circumference W1 Waist part W2 Waist lower part 2 Absorbent body 21 Front surface sheet 22 Back side sheet 23 Absorber 24 Leakage-proof cuff 3 Exterior body 31 Outer layer sheet 32 Inner layer sheet 33 Waist circumference Elastic member 34 Leg elastic member 4 Stretchable area 5 Non-stretchable area 50 Non-stretchable part X Vertical direction Y Horizontal direction

Claims (4)

It has a vertical direction corresponding to the front-back direction of the wearer and a lateral direction orthogonal to the vertical direction, and is arranged between the ventral portion arranged on the ventral side of the wearer and the dorsal portion arranged on the dorsal side at the time of wearing. It has a crotch part located in the vertical direction,
An absorbent main body provided with an absorbent body and an outer body arranged on the non-skin facing surface side of the absorbent main body are provided, and the vertical parts of the outer body on the ventral side and the outer body on the back side are respectively. Both side edges along the direction are joined together to form a pair of side seals, a waist opening and a pair of leg openings, between the waist opening and the leg openings, the wearer's torso when worn. It is a pants-type absorbent article with a waistline that is arranged around it.
Non-stretchable regions having no elasticity are provided on the side seal portion on both lateral sides of the absorber or the extension region when the absorber is virtually extended in the vertical direction in the waist circumference portion. Closely placed, the close placement means that the non-stretchable region is placed within 60 mm laterally inward from the inner edge of the side seal.
The non-stretchable region includes a sheet constituting the exterior body and does not include an absorber.
Between the non-stretchable region arranged close to one of the pair of side seal portions and the non-stretchable region arranged close to the other, there is a stretchable region having elasticity in the lateral direction. At the same time
Lateral stretchability between the non-stretchable area and the waist opening, between the non -stretchable area and the leg opening , and between the laterally outward side of the non-stretchable area and the side seal portion . There is a stretchable area with
A plurality of elastic members are intermittently arranged in the longitudinal direction in a laterally extended state on the exterior body in the waist circumference portion, and the elastic region is a region in which the elastic member can exhibit elasticity.
The elastic member arranged at a portion of the stretchable region located at the same position in the vertical direction as the non-stretchable region traverses the stretchable region in the lateral direction and extends laterally to both sides of the stretchable region. The extension portion of the elastic member is not located in the non-stretchable region, but is located between the non-stretchable region and the leg opening or the waist opening.
The elastic member laterally crossing the stretchable region at the same position in the vertical direction as the vertically adjacent portion in the vertical adjacent portion vertically adjacent to the non-stretchable region in the waist circumference portion, and the non-stretchable member. A pants-type absorbent article in which an extension portion of the elastic member laterally traversing the stretchable region located at the same position in the vertical direction as the region is present. A plurality of elastic members are intermittently arranged in the vertical direction in a laterally extended state on the exterior body around the waist.
The stretchable region is a region in which the stretchability of the elastic member can be exhibited.
The pants-type absorbent article according to claim 1 , wherein the non-stretchable region is a region in which the elasticity of the elastic member is inhibited. The pants-type absorption according to claim 1 or 2 , wherein the non-stretchable region is located within 10 mm or more and 80 mm inward in the vertical direction from the waist opening, and the lateral length of the non-stretchable region is 15 mm or more and 60 mm or less. Sex goods. The pants-type absorbent article according to any one of claims 1 to 3 , wherein the non-stretchable region is arranged at least on the ventral side.

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