JP2022042441A - Absorbent article series - Google Patents

Abstract

To provide an absorbent article series for making it possible to dispose of a used absorbent article compactly and sanitarily regardless of property change in excrement depending on use and body growth.SOLUTION: An absorbent article series includes a plurality of absorbent articles 1 having different sizes, the plurality of absorbent articles 1 are divided into a plurality of size groups corresponding to the number of types of the sizes. The absorbent articles 1 comprise a disposal tape 4 that is fixed to their external surface and has flexibility. Between at least some of the plurality of size groups, there is established magnitude relation of swelling compact indices or packing indices with respect to disposal tapes 4 of absorbent articles 1 of a relatively small-sized size group>those of a relatively large-sized size group.SELECTED DRAWING: Figure 7

Description

The present invention relates to a series of absorbent articles comprising a plurality of absorbent articles of different sizes.

As an absorbent article that can be easily and hygienically disposed of after use, a disposal tape is provided on the outer surface of the absorbent article so that the state of the small rolled absorbent article can be maintained by the disposal tape. It has been known. Patent Document 1 describes a fixing member that can be used as a disposal tape for absorbent articles, and as an example of using the fixing member, the fixing member is used on the outer surface of a disposable diaper in the vertical direction (diaper wearer). The fixing member is wound in the winding direction of the diaper that has been rolled up and rolled up in the vertical direction so as to be extendable in the front-back direction of the diaper, so that the disposable form can be maintained. Has been done. Further, regarding the usage example of the fixing member, after the disposable diaper is allowed to absorb 200 ml of water at 40 ° C. and allowed to stand for 2 minutes, the developed fixing member is wound while being pulled by a force of 500 gf to form an adhesive layer provided with the fixing member. It is said that the adhesive state of the adhesive layer is maintained when the diaper is allowed to stand for 1 hour while being adhered to the diaper (Patent Document 1 [0074]).

Patent Document 2 describes an array of packages containing three or more different sized pants-type disposable diapers. According to Patent Document 2, the "arrangement" means the display of a package containing diapers of different sizes having a similar article structure, and the "package" has the same brand and / or subbrand. They are located proximal to each other within a predetermined area of the retail store (Patent Document 2 [0018]). The "arrangement" includes the first, second and third packages, and the dimensions (product length, waist width, etc.) of each part of the diaper contained in the packages are determined by each of these packages. The relationship is established. According to the sequence of packages described in Patent Document 2, the diapers contained in the sequence are designed for various wearers based on the wearer's BMI and body shape, and are suitable for a wide range of adult consumers. It is said that it is made to do. Patent Document 2 does not specifically describe the disposal form of diapers.

Japanese Unexamined Patent Publication No. 2018-121931 Special Table 2017-514651 Gazette

For an absorbent article equipped with a waste tape, excretion of urine, feces, etc. absorbed and held by the absorber provided with the absorbent article in a disposal form in which the waste tape is rolled up after use and the waste tape is wrapped around the outer surface. It is required that the material does not leak to the outside and can be disposed of compactly and hygienically using a disposal tape. However, conventional absorbent articles have room for improvement in this regard.
For example, L size products of disposable diapers for infants are typically designed to weigh about 30 to 40 g per product, and the amount of excrement absorbed when worn is assumed to be about 100 g. The amount of excrement absorbed in applications where the wearing time is relatively long, such as while sleeping or going out, is 200 g or more, and in many cases it is 300 g or more. It was difficult to dispose of a large swollen used diaper in a small and compact manner. Furthermore, it is desired that the smaller the size for younger ages, the larger the number of diaper changes per day, that is, the number of diapers to be discarded, and the more compact the diapers can be discarded.
For example, in infants, the stool properties change as the age of the diaper increases, and the viscosity tends to increase gradually. Since it is relatively easy to remove, it is possible to flush the stool into the toilet without worrying about hygiene, and after using the diaper, roll it up and wrap it with a disposal tape to dispose of it, and then the stool leaks. It is relatively unlikely to be released, but if the diaper wearer is relatively young, the stools absorbed and retained in the used diaper may be highly fluid, such as loose stools and diarrhea stools. Because of the large number, it is difficult to remove stool from the surface of the diaper, and when rolling the diaper, the diaper must be rolled and wrapped with waste tape, taking care to prevent the stool from sticking to the hand, while the rolled diaper. If the disposal tape is not tightly wrapped around the diaper, it is easy for stool to leak from the disposable diaper.
The conventional absorbent article has not been designed in consideration of the difference in usage and the difference in fecal properties due to the growth of the wearer's body, and there is room for improvement in the disposal form.

An object of the present invention is to provide a series of absorbent articles capable of compactly and hygienically disposing of used absorbent articles regardless of the use or changes in the properties of excrement with the growth of the body. ..

The present invention (first invention) includes a plurality of absorbent articles of different sizes, and the plurality of absorbent articles are divided into a plurality of size groups corresponding to the number of types of the size. It is a series.
In one embodiment of the series of absorbent articles of the present invention (first invention), the plurality of absorbent articles each have a vertical direction corresponding to the front-back direction of the wearer and a horizontal direction orthogonal to the vertical direction. It is provided with an absorber that absorbs and holds body fluid, and a waste tape that is fixed to the outer surface of the absorbent article and has elasticity.
In one embodiment of the absorbable article series of the present invention (first invention), the swelling compact index measured by the following method of the absorbent article is relative to at least a part of the plurality of size groups. The size relationship of small size group> relatively large size group is established.
<Measurement method of swelling compact index>
After the absorbent article to be measured is saturated and absorbed with physiological saline under a measurement environment having an atmospheric temperature of 23 ± 2 ° C. and a relative humidity of 50 ± 5%, the inside surface of the absorbent article in the developed state is turned inside. It is wound in the vertical direction, and the outer peripheral length C1 in the winding direction is measured. Further, in a state where the waste tape fixed to the outer surface of the absorbent article after winding is stretched to 50% of the breaking elongation, the outer surface of the absorbent article is wound along the winding direction of the absorbent article. After wrapping it around and leaving it in that state for 20 minutes, the outer circumference length C2 of the portion of the absorbent article to which the disposal tape is wrapped is measured. Then, the swelling compact index of the absorbent article to be measured is calculated by the following equation.
Swelling compact index = 1- (C2 / C1)

The present invention (second invention) includes a plurality of absorbent articles of different sizes, and the plurality of absorbent articles are divided into a plurality of size groups corresponding to the number of types of the size. It is a series.
In one embodiment of the series of absorbent articles of the present invention (second invention), the plurality of absorbent articles each have a vertical direction corresponding to the front-back direction of the wearer and a horizontal direction orthogonal to the vertical direction. It is provided with an absorber that absorbs and holds body fluid, and a waste tape that is fixed to the outer surface of the absorbent article and has elasticity.
In one embodiment of the absorbable article series of the present invention (second invention), the winding packing index measured by the following method of the absorbent article is relative to at least a part of the plurality of size groups. The size relationship of small size group> relatively large size group is established.
<Measurement method of winding packing index>
After the absorbent article to be measured is saturated and absorbed with physiological saline under a measurement environment having an atmospheric temperature of 23 ± 2 ° C. and a relative humidity of 50 ± 5%, the inside surface of the absorbent article in the developed state is turned inside. It is wound in the vertical direction, and the outer peripheral length C1 in the winding direction is measured. Further, the total length T50 in the elongation direction of the waste tape when the waste tape fixed to the outer surface of the absorbent article to be measured is stretched to 50% of the breaking elongation is measured. Then, the winding packing index of the absorbent article to be measured is calculated by the following equation.
Winding packing index = T50 / C1
Other features, effects and embodiments of the invention are described below.

INDUSTRIAL APPLICABILITY According to the present invention, there is provided a series of absorbent articles capable of compactly and hygienically disposing of used absorbent articles regardless of changes in the properties of excrement due to use or growth of the body.

FIG. 1 is a schematic perspective view of the back side of a pants-type disposable diaper according to an embodiment of the absorbent article according to the present invention. FIG. 2 is a developed plan view schematically showing the inner surface side (skin facing surface side, the arrangement surface side of the absorbent main body) of the diaper shown in FIG. 1 in the expanded and extended state. FIG. 3 is a schematic development plan view of the outer surface side (non-skin facing surface side, non-arranged surface side of the absorbent body) in the expanded and extended state of the diaper shown in FIG. FIG. 4 is a cross-sectional view taken along the thickness direction along the line I-I of FIG. 2, and is a schematic cross-sectional view of the inseam of the diaper shown in FIG. FIG. 5 is a cross-sectional view taken along the thickness direction along the line II-II of FIG. 3, and is a schematic vertical cross-sectional view of the waste tape provided in the diaper shown in FIG. 1 in an unused state. FIG. 6 (a) is a perspective view schematically showing how the waste tape is stretched in the process of forming the disposal form of the diaper shown in FIG. 1, and FIG. 6 (b) shows the waste tape rolled. It is a perspective view which shows typically the state of wrapping around the outer surface of the diaper of the state. FIG. 7 is a perspective view schematically showing an example of a packaging structure of an absorbent article, which is an embodiment of a size group included in the series of absorbent articles of the present invention, with a partial break. FIG. 8A is an explanatory diagram of the outer peripheral length C1 of the absorbent article in the method for measuring the winding packing index, and FIG. 8B is an explanatory diagram of the outer peripheral length C2 of the absorbent article in the method for measuring the swelling compact index. be. 9 (a) is a schematic vertical sectional view along the thickness direction of the absorbent article (pants-type disposable diaper) taken out from the packaging structure shown in FIG. 7, and FIG. 9 (b) is FIG. 9 (a). It is a schematic vertical sectional view along the thickness direction when the absorbent article shown in is unfolded. FIG. 10 is an explanatory diagram of the relationship between the vertical length of the absorbent article and the vertical length of the waste tape in one embodiment of the absorbent article according to the present invention. FIG. 11 is a schematic cross-sectional view taken along the horizontal direction of the disposal form formed by winding the diaper shown in FIG. 1 in the vertical direction and winding the disposal tape in the winding direction, and is shown in FIG. 6 (b). It corresponds to a schematic cross-sectional view of a diaper disposal form. 12 (a) is a plan view showing a schematic configuration of another embodiment of the absorbent article according to the present invention, and FIG. 12 (b) is along the thickness direction of the diaper disposal embodiment shown in FIG. 12 (a). It is a schematic cross-sectional view.

Hereinafter, the present invention will be described based on the preferred embodiment thereof with reference to the drawings. In the description of the drawings below, the same or similar parts are designated by the same or similar reference numerals. The drawings are basically schematic, and the ratio of each dimension may differ from the actual one.

The series of absorbent articles of the present invention includes at least two or more kinds of absorbent articles having different sizes. The plurality of types of absorbent articles are partly or wholly common to each other except for the size, and further, the effects produced by the absorbent articles may be common. The term "partially common" as used herein means, for example, the basic structure or main structure of the absorbent article (for example, the absorbent body 2 in the diaper 1 described later) or the characteristic portion characterizing the absorbent article (for example, described later). It means that the absorber 23) in the diaper 1 is structurally or structurally common, and other elements (excluding the size) are different.
The series of absorbent articles of the present invention may have a common name (brand name) for a plurality of types of absorbent articles constituting the series. In that case, each of the plurality of types of absorbent articles is one of the product lineups of the product group sold under the common name. The common name is printed, for example, on an absorbent article or its packaging container. As an example of the sales form of the series of absorbent articles of the present invention, at least two or more kinds of absorbent articles having a common name are arranged proximal to each other within a predetermined area of a retail store. The form to obtain is mentioned.

The "absorbable article" as used in the present invention broadly includes articles used for absorbing body fluids (urine, loose stool, menstrual blood, sweat, etc.) discharged from the human body, and includes, for example, disposable diapers, menstrual napkins, and menstruation. Shorts for menstruation etc. are included. Disposable diapers have a pants type having a waist opening and a leg opening, and a deployable type which does not have these openings and has a fastening means at the non-arranged portion (flap portion) of the absorber. However, the present invention is applicable to both disposable diapers.

1 to 4 show a diaper 1 which is an embodiment of an absorbent article included in the series of absorbent articles of the present invention. Hereinafter, the absorbent article according to the present invention will be described by taking diaper 1 as an example.
The diaper 1 has a vertical direction X corresponding to the front-back direction of the wearer, that is, a direction extending from the ventral side to the dorsal side through the crotch portion, and a lateral direction Y orthogonal to the vertical direction X. The diaper 1 is arranged in the crotch portion of the wearer, and includes the inseam B including the excretion portion facing portion (not shown) facing the excretion portion such as the wearer's dorsal region, and the wearer's abdomen rather than the crotch portion B. It is divided into three parts: a ventral part A arranged on the side (front side) and a dorsal part C arranged on the back side (rear side) of the wearer from the inseam B. The diaper 1 includes an absorber 23 that absorbs and holds body fluid, and a waste tape 4 that is fixed to the outer surface (non-skin facing surface) of the diaper 1 and has elasticity. The disposal tape 4 is used when the diaper 1 is put into a disposal form.

The diaper 1 is a pants-type disposable diaper having a side seal portion S in which both side edge portions along the vertical direction X of the ventral side portion A and the dorsal side portion C are joined to each other, and the diaper 1 is a disposable diaper having an absorbent body 23 and an absorbent body 2. The exterior body 11 is provided on the non-skin facing surface side of the absorbent body 2. The absorbent body 2 and the exterior body 11 are joined by an adhesive. The exterior body 11 has a larger area than the absorbent main body 2, and has an extending portion extending outward from the peripheral edge of the absorbent main body 2. Of the extending portion of the exterior body 11 from the absorbent main body 2, the portions located on both side edges 2S and 2S along the vertical direction X of the absorbent main body 2 and the portions located outside in the horizontal direction Y from their virtual extension lines. , Consists of a pair of side flap portions 10, 10. A pair of side seal portions S, a waist opening WH, and a pair of leg openings LH and LH are formed by joining the pair of side flap portions 10 and 10 of the ventral side portion A and the dorsal side portion C, respectively.

As shown in FIGS. 2 and 3, the diaper 1 is formed symmetrically on one side and the other side with the horizontal center line CLi in between.
The ventral part A is a part of the front body F of the diaper 1, and the dorsal part C is a part of the back body R of the diaper 1. The inseam B straddles the vertical center line CLx in the vertical direction X, and exists from the front body F to the back body R. The ventral portion A and the dorsal portion C each typically include a waist circumference portion that is arranged around the wearer's waist circumference when the diaper 1 is worn. The waist circumference portion is a portion at the same position as the side seal portion S in the vertical direction X (in the present embodiment, a rectangular shape in a plan view extending from the opening edge of the waist opening WH to the lower end Sb of the side seal portion S). Area) is included. The inseam B typically includes a region where leg openings LS, LS, which are constrictions for forming leg openings LH, LH, are formed. The leg edge portion LS is a part of both side edge portions along the vertical direction X of the side flap portion 10.
In the present invention, the ventral portion A, the inseam B, and the dorsal portion C can be each region when the unfolded and extended diaper 1 is divided into three equal parts in the vertical direction X.

The horizontal center line CLy is a virtual straight line that bisects the expanded and extended diaper 1 as shown in FIGS. 2 and 3 in the horizontal direction Y and extends in the vertical direction X. The vertical center line CLx is a virtual straight line that bisects the expanded and extended diaper 1 in the vertical direction X and extends in the horizontal direction Y.
The "expanded and extended state" as used herein means that the diaper 1 is separated by the side seal portion S to be in the expanded state, and the diaper 1 in the expanded state is extended 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.

In the present embodiment, as shown in FIGS. 2 and 3, the absorbent main body 2 has a rectangular shape in a plan view, and the longitudinal direction thereof coincides with the vertical direction X of the diaper 1 in the lateral direction of the exterior body 11. It is arranged in the central part of Y and extends in the vertical direction X from the ventral side A to the dorsal side C via the inseam B. The contour of the absorbent body 2 in a plan view substantially coincides with the contour of the absorbent body 23.
As shown in FIG. 4, the absorbent main body 2 is a liquid-permeable surface sheet 21 arranged at a position relatively close to the wearer's skin, and a liquid arranged at a position relatively far from the wearer's skin. It is configured to include a back surface sheet 22 that is impermeable, impervious to liquid, or water repellent (that is, leak-proof), and an absorber 23 that is interposed between both sheets 21 and 22. The absorber 23 includes an absorbent core 24 capable of absorbing and holding body fluid, and a core wrap sheet 25 covering an outer surface of the absorbent core 24 including a skin facing surface and a non-skin facing surface. These members constituting the absorbent main body 2 are integrated by a known joining means such as an adhesive.
As the above-mentioned members constituting the absorbent main body 2, those usually used in this kind 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 absorbent core 24 is typically mainly composed of a water-absorbent material, and contains one or more selected from a fiber material such as wood pulp and a water-absorbent polymer as the water-absorbent material. The core wrap sheet 25 has liquid permeability and is typically made of paper, non-woven fabric or the like. The core wrap sheet 25 may be omitted.

In the present specification, the "skin facing surface" is a surface of a pants-type disposable diaper or a component thereof (for example, an absorber) that is directed toward the wearer's skin side when the diaper is worn, that is, relative to the wearer's skin. The "non-skin facing surface" is the surface of the pants-type disposable diaper or its components that faces the side opposite to the skin side when the diaper is worn, that is, relatively far from the wearer's skin. On the side. The term "when worn" as used herein means a state in which the normal proper wearing position, that is, the correct wearing position of the absorbent article is maintained.

As shown in FIG. 4, a pair of leakage-proof cuffs 3 and 3 standing on the skin side of the wearer when the diaper 1 is worn are provided on both sides of the absorbent body 2 along the vertical direction X. Each leak-proof cuff 3 includes a liquid-resistant or water-repellent and breathable leak-proof sheet 30, in which one end side in the lateral direction Y is another member (absorbent body 2 in the illustrated form). And the fixed end portion fixed to the exterior body 11) described later, and the other end side in the lateral direction Y is a free end portion which is not fixed to other members. An elastic member 31 for forming a leak-proof cuff is fixed at the free end of the leak-proof sheet 30 in an extended state in the vertical direction X so as to be expandable and contractible in the same direction. When wearing the diaper 1, the contraction force of the elastic member 31 causes the free end side of the leak-proof sheet 30 to stand up on the wearer side with the fixed end as the standing base end, at least in the inseam B. The leak-proof cuffs 3 and 3 stand up to prevent the outflow of excrement such as urine to the outside in the lateral direction Y.

In the present embodiment, as shown in FIG. 4, the exterior body 11 is arranged with the outer layer sheet 12 relatively far from the wearer's skin and the outer layer sheet 12 relatively close to the wearer's skin. It is configured to include an inner layer sheet 13. Both sheets 12 and 13 are joined to each other and integrated through a joining means such as an adhesive. The outer layer sheet 12 is the outermost layer of the exterior body 11, and forms the non-skin facing surface of the exterior body 11 and also forms the outer surface of the diaper 1. The inner layer sheet 13 is the innermost layer of the exterior body 11 and forms the skin facing surface of the exterior body 11. The absorbent body 2 is joined to the skin-facing surface of the inner layer sheet 13.
As the outer layer sheet 12 and the inner layer sheet 13, non-woven fabrics and resin films produced by various manufacturing methods can be used, respectively, and examples of the non-woven fabrics include spunbonded non-woven fabrics, air-through nonwoven fabrics, and needle punched nonwoven fabrics. Both the sheets 12 and 13 may have a single-layer structure or a laminated structure in which two or more sheets are laminated. Further, both the sheets 12 and 13 may be elastic sheets having elasticity in the lateral direction Y, or may be non-stretchable sheets having no elasticity.

In the present embodiment, leg gathers are formed on the leg edge LS forming the opening edges of each of the pair of leg openings LH and LH. The leg gather includes an exterior body 11 and an elastic member 15 for forming leg gathers, which is fixed to the exterior body 11 and has a portion extending along the leg edge portion LS. The leg gather is manufactured by fixing the elastic member 15 in the stretched state between the outer layer sheet 12 and the inner layer sheet 13 constituting the exterior body 11, and then releasing the elastic member 15 from the stretched state. In the natural state or the wearing state of the diaper 1, a plurality of folds extending in a direction intersecting the contraction direction of the elastic member 15 on the portion constituting the opening edge portion of the leg opening LH in the exterior body 11 due to the contraction of the elastic member 15 ( Gathers) are formed, thereby forming the annular leg gathers in which the folds are substantially continuous over the entire circumference of the opening edge of the leg opening LH.

As shown in FIGS. 2 and 3, the side flap portions 10 of each of the ventral side portion A and the dorsal side portion C have an elastic region G having elasticity in the lateral direction Y. The stretchable region G includes a sheet forming the side flap portion 10 and a plurality of elastic members 14 arranged on the sheet so as to be stretchable in the lateral direction Y. The plurality of elastic members 14 extend in the horizontal direction Y and are intermittently arranged in the vertical direction X. In the present embodiment, the stretchable region G is located at the waist circumference portion (the portion at the same position as the side seal portion S in the vertical direction X), and the elastic member 14 can be said to be the waist circumference elastic member.
In the present embodiment, the "sheet forming the side flap portion 10" is an outer layer sheet 12 and an inner layer sheet 13. The stretchable region G is produced by fixing the elastic member 14 between the sheets 12 and 13 in a state of being stretched in the lateral direction Y, and then releasing the elastic member 14 from the stretched state. In the wearing state of the diaper 1, a large number of folds extending in the direction intersecting the elastic member 14 (vertical direction X) are formed on the surface of the elastic region G due to the contraction of the elastic member 14.

In the present embodiment, as shown in FIGS. 2 and 3, each of the ventral side portion A and the dorsal side portion C is a portion located at the same position as the side seal portion S in the vertical direction X and the absorbent body 2 (absorbent body). The entire portion that does not overlap with 23) in a plan view is the expansion / contraction region G. The elastic member 14 arranged in the portion of the diaper 1 that overlaps with the absorbent main body 2 in a plan view is processed so as not to exhibit elastic elasticity such as being divided, and therefore the portion expands and contracts in the lateral direction Y. Has no sex.
Further, in the present embodiment, the stretchable region G is located on the upper stretchable region G1 located on the waist opening WH side and the crotch lower part B side with the vertical end 2E of the absorbent body 2 and its virtual extension line as boundaries. Includes lower stretch region G2.
The upper elastic region G1 includes the opening peripheral portion of the waist opening WH, and is arranged around the waist (waist portion) of the wearer when the diaper 1 is worn. In the expanded and extended state of the diaper 1 as shown in FIGS. 2 and 3, the length of the upper expansion / contraction region G1 in the vertical direction X is preferably 10% or more with respect to the length of the side seal portion S in the vertical direction X. , More preferably 20% or more, and preferably 70% or less, more preferably 50% or less.
The lower expansion / contraction region G2 is the vertical end 2E of the absorbent body 2 and its virtual extension line and the lower end Sb of the side seal portion S (out of both ends of the vertical direction X of the side seal portion S, relative to the vertical center line CLx). A pair of absorbent bodies 2 are provided on both sides in the lateral direction Y with the absorbent body 2 interposed therebetween.

The absorbent article according to the present invention includes a waste tape fixed to the outer surface of the absorbent article and having elasticity. The structure and arrangement position of the waste tape according to the present invention are not particularly limited on the premise that the winding packing index and the swelling compact index described later are described. For example, the waste tape according to the present invention may be provided so as to be extendable in the vertical direction starting from a fixing portion with the outer surface of the absorbent article, or may be provided so as to be extendable in the horizontal direction. In this embodiment, the former is adopted as described later. When the latter is adopted, typically, taking diaper 1 as an example, at least one of the stretchable regions G (upper stretchable region G1 and / or lower stretchable region) of the pair of side flap portions 10 and 10 of the dorsal side portion C is taken as an example. The disposal tape 4 is fixed to the outer surface of G2).

In the present embodiment, as shown in FIGS. 1 to 3, the disposal tape 4 is provided on the outer surface of the dorsal side C of the diaper 1 (the non-skin facing surface of the outer layer sheet 12). One waste tape 4 is arranged in the central portion of the dorsal side portion C in the lateral direction Y, overlaps with the absorber 23 (absorbent main body 2) in a plan view, and does not overlap with the expansion / contraction region G.

The waste tape 4 has a long strip shape in one direction, and is provided on the outer surface of the diaper 1 so that its longitudinal direction coincides with the vertical direction X when the waste tape 4 is used. That is, the disposal tape 4 is provided so as to be extendable in the vertical direction X from the fixing portion with the outer surface of the diaper 1.

FIG. 5 shows a cross-sectional structure of the unused waste tape 4 along the thickness direction in the vertical direction X. The waste tape 4 is in a state of being folded on the outer surface of the diaper 1 (the non-skin facing surface of the outer layer sheet 12) when not in use.
In the present embodiment, the disposal tape 4 can extend from the fixing portion 5 fixed to the outer surface of the diaper 1 and the fixing portion 5 outward in the vertical direction X (direction indicated by reference numeral X1 in FIG. 5). A free portion 6 is included, and the free portion 6 includes a fastening portion 7 that can be fastened to the outer surface of the diaper 1 and an expansion / contraction portion 8 located between the fixing portion 5 and the fastening portion 7. ..
The fastening portion 7 forms the tip portion of the disposal tape 4 and can be fastened to an arbitrary position on the outer surface of the diaper 1. When the disposal form of the diaper 1 is maintained by the disposal tape 4, the diaper 1 is used. It is a part that is fixed to the outer surface of the diaper. The fastening portion 7 has a fastening means for fastening to the outer surface of the diaper 1, and the fastening means is not particularly limited, and in the present technical field such as an adhesive, an adhesive, and a hook material. Anything used as a fastening means can be used as appropriate.
The elastic portion 8 is a portion that easily expands with a relatively weak tensile force when a tensile force is applied to the waste tape 4, and increases the length of the waste tape 4. The telescopic portion 8 can be expanded and contracted not only in the vertical direction X but also in the vertical direction X. The term "expandable" as used herein means that the waste tape 4 expands when a tensile force is applied and contracts when the tensile force is released.
The folded waste tape 4 is in a tri-folded state in which the fixing portion 5, the telescopic portion 8 and the fastening portion 7 are laminated in this order on the outer surface of the diaper 1. Although it is described in FIG. 5 that there is a gap between the fixing portion 5 and the expansion / contraction portion 8 and between the expansion / contraction portion 8 and the fastening portion 7, for convenience of explanation, the actual waste tape is shown. There is not always such a gap.

In the present embodiment, the fixing portion 5 of the disposal tape 4 has a fixing portion sheet piece 50. The fixed portion sheet piece 50 has a first surface 50a and a second surface 50b. In the folded waste tape 4, the first surface 50a of the fixed portion sheet piece 50 faces the expansion / contraction portion 8 and the second surface 50b faces the outer surface of the diaper 1, except for the folded portion 50'described later. Facing each other. Further, the fixing portion 5 has an adhesive portion 51 for the fixing portion. The fixing portion adhesive portion 51 is provided on the second surface 50b of the fixing portion sheet piece 50. The fixing portion 5 is fixed to the outer surface of the dorsal portion C in the diaper 1 by the fixing portion adhesive portion 51. The disposal tape 4 is non-detachably fixed to the outer surface of the back side portion C of the diaper 1 via the fixing portion adhesive portion 51. As a method for fixing the waste tape 4 to the outer surface of the diaper 1, an adhesive such as a hot melt type adhesive or a known method such as fusion can be used.

In the present embodiment, the stretchable portion 8 of the waste tape 4 has a stretchable portion sheet piece 80. The length in the longitudinal direction (length X in the vertical direction) of the sheet piece 80 for the expansion / contraction portion may be the same as or different from the length in the longitudinal direction (length X in the vertical direction) of the sheet piece 50 for the fixing portion. .. Further, the width of the elastic sheet piece 80 (the length in the horizontal direction Y) may be the same as or different from the width of the fixed portion sheet piece 50 (the length in the horizontal direction Y). The elastic sheet piece 80 has a first surface 80a and a second surface 80b. In the folded waste tape 4, the elastic sheet piece 80 has a first surface 80a facing the fastening portion 7 and a second surface 80b with the fixing portion 5, except for the folded portion 80'described later. Facing each other. Further, the expansion / contraction portion 8 has an adhesive portion 81 for the expansion / contraction portion. The elastic portion adhesive portion 81 is provided on the second surface 80b of the elastic portion sheet piece 80. The stretchable portion adhesive portion 81 is for peeling and joining between the stretchable portion 8 and the fixing portion 5 in the folded waste tape 4. Therefore, it is preferable that the adhesive portion 81 for the stretchable portion is composed of a low-adhesive adhesive.

The fixing sheet piece 50 in the fixing portion 5 described above has a folded portion 50'in which one end in the longitudinal direction (outer end in the vertical direction X) is folded back toward the expansion / contraction portion 8. The folded-back portion 50'is joined to one end in the longitudinal direction (outer end of the vertical direction X) of the stretchable portion sheet piece 80 in the stretchable portion 8 on the side of the second surface 80b. As a result, the fixed portion 5 and the telescopic portion 8 are directly connected to each other. As a method of connecting the fixing portion 5 and the expanding / contracting portion 8 in series, a known method such as an adhesive such as a hot melt type adhesive or a fusion can be used.

In the present embodiment, the fastening portion 7 of the disposal tape 4 has a fastening portion sheet piece 70. The length in the longitudinal direction (length X in the vertical direction) of the sheet piece 70 for the fastening portion is the same as the length in the longitudinal direction (length X in the vertical direction) of the sheet piece 50 for the fixing portion or the sheet piece 80 for the expansion / contraction portion. But it may be different. Further, the width of the sheet piece 70 for the fastening portion (length in the lateral direction Y) may be the same as the width of the sheet piece 50 for the fixing portion or the sheet piece 80 for the expansion / contraction portion (length in the lateral direction Y), and is different. May be. The sheet piece 70 for the fastening portion has a first surface 70a and a second surface 70b. In the folded waste tape 4, the second surface 70b of the fastening sheet piece 70 faces the expansion / contraction portion 8. Further, the fastening portion 7 has an adhesive portion 71 for the fastening portion. The adhesive portion 71 for the fastening portion is provided on the second surface 70b of the sheet piece 70 for the fastening portion. The adhesive portion 71 for the fastening portion is detachably joined between the fastening portion 7 and the expansion / contraction portion 8 of the waste tape 4 in the folded state, and the fastening portion 7 is appropriately attached to the outer surface of the diaper 1. It adheres to the site. From this point of view, it is preferable that the degree of adhesiveness of the adhesive portion 71 for the fastening portion is determined.

The stretchable portion sheet piece 80 in the stretchable portion 8 described above has one end in the longitudinal direction (inner end in the vertical direction X) folded back toward the fastening portion 7 to form a folded portion 80'. The folded-back portion 80'is joined to one end (inner end in the vertical direction X) of the fastening portion sheet 70 in the fastening portion 7 in the longitudinal direction on the side of the second surface 70b. As a result, the telescopic portion 8 and the fastening portion 7 are directly connected to each other. As a method of connecting the expansion / contraction portion 8 and the fastening portion 7 in series, a known method such as an adhesive such as a hot melt type adhesive or a fusion can be used. Further, a pinching piece 72 is joined to the other end of the fastening portion sheet piece 70 in the fastening portion 7 on the second surface 70b side. The picking piece 72 is a sheet piece separate from the sheet piece 70 for the fastening portion.

In order for the stretchable portion 8 to be stretchable, an appropriate material may be selected as the stretchable portion sheet piece 80 constituting the stretchable portion 8. Specifically, for example, a stretchable film can be used as a constituent material of the stretchable portion sheet piece 80. Examples of such films include single layer films and multilayer films such as coextruded films. Further, as a material constituting the stretchable film, polyolefin such as linear low-density polyethylene is preferable. Further, at least one material selected from the group consisting of polyvinyl chloride, ethylene-vinyl acetate copolymer and polyvinyl alcohol is also preferable. Further, it is also advantageous to use a material having a permanent deformation of at least 50%, more preferably at least 70%.

As the fixed portion sheet piece 50 constituting the fixed portion 5, the same material as the constituent material of the stretchable portion sheet piece 80 may be used, or any material that cannot be stretched, that is, cannot be plastically deformed may be used. good. For example, conventionally known known materials such as resin sheets (plastic sheets, films, etc.), non-woven fabrics, woven fabrics, etc. can be used without particular limitation. Even if the constituent material of the sheet piece 50 for the fixing portion is stretchable, the stretchability is not exhibited in the portion fixed to the non-skin facing surface of the diaper 1.

Examples of the adhesive portion 81 for the elastic portion that detachably joins the elastic portion 8 and the fixed portion 5 and the adhesive portion 71 for the adhesive portion that detachably joins the adhesive portion 7 and the elastic portion 8 are rubber-based. Adhesives and acrylic adhesives are generally used, preferably rubber adhesives. Examples of the rubber-based pressure-sensitive adhesive include synthetic rubbers such as styrene-butadiene block copolymers and hydrogenated styrene-butadiene block copolymers, and blends of these synthetic rubbers with resins. Further, a heat seal, a hot melt type pressure-sensitive adhesive, a melt blow-like or fibrous pressure-sensitive adhesive, or a pressure-sensitive adhesive may be used.

The adhesive portion 81 for the elastic portion and the adhesive portion 71 for the fastening portion may be formed on the entire surface of the second surface 80b of the elastic portion sheet piece 80, respectively. Further, these adhesive portions 81 and 71 may be formed intermittently, respectively. In this case, these adhesive portions 81 and 71 can be formed intermittently by intermittently applying the above-mentioned adhesive.

The waste tape 4 has a fixing sheet piece 50 at one end in the longitudinal direction of the elastic sheet piece 80 and a fastening sheet 70 at the other end of the elastic sheet 80 in the longitudinal direction. , Each of which can be partially laminated, and the laminated portions can be joined and integrated by using a known method such as an adhesive.

As described above, the waste tape 4 including the three parts of the fixing portion 5, the expansion / contraction portion 8 and the fastening portion 7 is in the longitudinal direction (longitudinal direction) in the cross-sectional view along the thickness direction in the vertical direction X as shown in FIG. It is in a state of being folded in X), and in the present embodiment, it is in a state of being folded in three in a Z shape. The disposal tape 4 has the tip of the fastening portion 7 (picking piece 72) located at the uppermost portion of the folded disposal tape 4 outward in the vertical direction X (in FIG. 5, with reference numeral X1). Direction shown), that is, the lateral direction of the portion of the dorsal portion C at the same position as the side seal portion S in the vertical direction X so as to face the side opposite to the center of the vertical direction X of the diaper 1 (vertical center line CLx). It is provided on the outer surface of the central portion of Y, and by grasping the tip of the fastening portion 7 with a finger or the like and pulling it outward in the vertical direction X, the free portion 6 including the expansion / contraction portion 8 and the fastening portion 7 is provided. Can extend outward in the vertical direction X from the fixed portion 5.

The stretchable portion 8 can be stretched in the longitudinal direction (longitudinal direction X) of the waste tape 4 in the unfolded state in the folded state. More specifically, in the elastic sheet piece 80, a portion other than both ends joined to the fixed portion sheet piece 50 or the fastening portion sheet piece 70 can be extended in the longitudinal direction. Here, the unfolded state in the folded state refers to a state in which the waste tapes 4 in the folded state are peeled off from each other in contact with each other and the waste tapes 4 are unfolded in a straight line. .. For example, in the unfolded state of the tri-folded state shown in FIG. 5, the elastic portion 8 and the fixing portion 5 of the waste tape 4 are peeled off, and the elastic portion 8 and the fastening portion 7 are peeled off. It refers to a state in which the waste tape 4 in a folded state is unfolded in a straight line. In the unfolded state, the waste tape 4 can be stretched by human power, and at that time, the stretchable portion 8 can be stretched.

As shown in FIG. 6, the disposal form of the diaper 1 is typically a diaper 1 in which the side seal portion S is peeled off and the diaper 1 is in a deployed state (a state in which the front body F and the back body R do not overlap). By winding up in the vertical direction X from the ventral side A side to the dorsal side C side (placement side of the waste tape 4) with the inner surface (skin facing surface, placement surface of the absorbent main body 2) inside. It can be formed by putting the diaper 1 in a rolled state and winding the waste tape 4 around the rolled diaper 1 in the winding direction (vertical direction X) of the diaper 1. In this case, before winding up the diaper 1, the side flap portion 10 may be bent toward the absorbent main body 2 with the inner surface of the diaper 1 inside.
As another example of the method of winding the diaper 1, the diaper 1 in which the front body F and the back body R are overlapped with the arrangement surface of the absorbent body 2 inside, and the inseam B with the front body F inside. A method of winding in the vertical direction X from the waist opening toward the WH side (the side where the waste tape 4 is arranged) can be mentioned. In this case, before winding up the diaper 1, the side flap portion 10 may be bent toward the absorbent main body 2 with the ventral side portion A inside.
In the form shown in FIG. 6, the disposal tape 4 is wound around the central portion of the rolled diaper 1 in the lateral direction Y (direction orthogonal to the winding direction of the diaper 1), and the disposal tape 4 is fastened. A portion 7 is fastened to a fixing portion 5 of the disposal tape 4 (that is, the disposal tape 4 wraps around the diaper 1 in a state of being rolled up and rolled in the vertical direction X in the winding direction). However, in the present invention, the winding position of the waste tape 4 and the fastening position of the fastening portion 7 are not particularly limited, and any position can be selected.

The series of absorbent articles of the present invention includes a plurality of absorbent articles of different sizes, and the plurality of absorbent articles are divided into a plurality of size groups corresponding to the number of types of the size.
For example, when the series of absorbent articles of the present invention contains a plurality of three types of disposable diapers, S size, M size, and L size, in ascending order of size, the plurality of disposable diapers are based on the number of types of the size. It is divided into a plurality of size groups corresponding to a certain three types, that is, an S size group, an M size group, and an L size group.

In the present invention, the "size of the absorbent article" refers to the total length of the absorbent article saturatedly absorbed with physiological saline in the vertical direction under unstressed state (in a state where no external force is applied) in an unfolded and non-elongated state. means. The "difference in size" as used in the present invention means that the sizes (total length in the vertical direction) defined in this way are different from each other among the absorbent articles to be compared. For example, in the case of commercially available baby diapers, diapers of different sizes are generally prepared according to the age of the baby. It is common to use large diapers for older infants, and the larger the diaper, the larger the saturated absorption capacity of saline. Therefore, it is common that the larger the diaper for older age, the larger the above-mentioned "size of the absorbent article".
The above-mentioned "absorbent article saturated with physiological saline" is an absorbent article in a developed state under an environment of an atmospheric temperature of 23 ± 2 ° C. and a relative humidity of 50 ± 5%. It is obtained by immersing the diaper in a physiological saline solution in a state in which the diaper is peeled off and expanded.
The above-mentioned "expanded and non-elongated state" means that the absorbent article saturated and absorbed with physiological saline is developed so that the front body and the back body do not overlap, and the elastic members of each part of the absorbent article are not. Refers to the state of being in the stretched state (natural state). In the case of the diaper 1, the state in which the side seal portion S is peeled off and the elastic member of each portion is unfolded in a plane without being stretched is the unfolded and non-stretched state.

In the present embodiment, as shown in FIG. 7, each of the plurality of size groups is a disposable diaper (absorbent article) including a plurality of diapers 1 and a packaging container 16 for accommodating the plurality of diapers 1 inside. Includes packaging structure 17. Each of the plurality of size groups can be an aggregate of a plurality of packaging structures 17. The plurality of diapers 1 in the packaging container 16 are not only the same in composition or structure, but also the same in size.
Each of the plurality of diapers 1 is housed inside the packaging container 16 in a folded state. In the present embodiment, each of the plurality of diapers 1 inside the packaging container 16 is folded in half in the vertical direction X with the ventral side A inside. Then, a plurality of folded diapers 1 are integrated in one direction to form a stack, and the stacks are stacked in the height direction of the packaging structure 17 and are integrally compressed. It is housed inside 16.
The packaging container 16 may be any as long as it can accommodate a plurality of diapers 1, and the material and composition are not particularly limited. In the present embodiment, the packaging container 16 is a packaging bag made of a flexible sheet. The packaging container 16 may be printed with the above-mentioned "name common to a plurality of types of absorbent articles constituting the series of the absorbent articles", that is, a so-called brand name.

The series of absorbent articles of the present invention includes the following first and second inventions.
1. First invention: Regarding the swelling compact index measured by the following method of an absorbent article in at least a part of a plurality of size groups, "relatively small size group> relatively large size". The size relationship of "group" is established.
Second invention: Regarding the winding packing index measured by the following method for absorbent articles in at least a part of a plurality of size groups, "relatively small size group> relatively large size". The size relationship of "group" is established.

The swelling compact index used in the first invention is a state in which excrement is saturated and absorbed, and the swelled diaper 1 is rolled up in the vertical direction X to be rolled up, and the outer surface of the rolled diaper 1 is 50% of the elongation at break. It is an index of the shrinkage rate of the wound portion of the waste tape 4 in the diaper 1 when the waste tape 4 stretched to the above is wound in the winding direction of the diaper 1. The larger the value of the swelling compact index, the smaller the outer diameter in the disposal form formed by winding up the absorbent article in the vertical direction, and the absorbent article with a large swelling compact index tends to have a relatively compact disposal form. Can be.

The winding packing index used in the second invention is the outer peripheral length C1 in the winding direction of the diaper 1 when the excrement is saturated and absorbed and the swollen diaper 1 is rolled up in the vertical direction X and rolled up (FIG. 8 (a). )) Is the ratio of the total length T50 when the breaking elongation of the waste tape 4 is extended by 50%, and the disposal form of the used diaper 1 is a hygienic disposal shape with high loose stool leakage resistance. It can be an indicator of that. The larger the value of the winding packing index, the longer the length of the waste tape 4 in the extension direction with respect to the outer peripheral length C1 of the diaper 1 in the winding direction, so that the tightening of the diaper 1 by the waste tape 4 is likely to be strengthened. Therefore, an absorbent article with a large winding packing index can prevent stool leakage and can provide a hygienic disposal shape.

<Measurement method of swelling compact index>
After saturated absorption of physiological saline in an absorbent article (for example, diaper 1) to be measured in an environment with an atmospheric temperature of 23 ± 2 ° C. and a relative humidity of 50 ± 5%, the inner surface of the absorbent article in a developed state is sucked. It is wound in the vertical direction with the inside turned inside, and the outer peripheral length C1 (see FIG. 8A) in the winding direction is measured (step 1).
Further, the disposal tape fixed to the outer surface of the absorbent article after winding (for example, the disposal tape 4 included in the diaper 1) is stretched to 50% of the breaking elongation (that is, in the stretching direction). In a state where the total length is extended so as to be T50), the absorbent article is wound around the outer surface of the absorbent article along the winding direction, left in that state for 20 minutes, and then the absorbent article is discarded. The outer peripheral length C2 (see FIG. 8B) of the portion around which the tape is wound is measured (step 2).
Then, the swelling compact index of the absorbent article to be measured is calculated by the following equation.
Swelling compact index = 1- (C2 / C1)

In the step 1, the saturated absorption treatment of the physiological saline solution is carried out, for example, in an environment where the ambient temperature is 23 ± 2 ° C. and the relative humidity is 50 ± 5%. Is immersed for 30 minutes with the inner surface (skin facing surface) side of the absorbent article facing down, then taken out of the physiological saline solution and left to hang for 30 minutes in an environment of normal temperature and pressure. Can be done by The absorbent article left suspended for 30 minutes can be considered to have saturated and absorbed the physiological saline solution. Since the diaper 1 is a pants-type disposable diaper, the side seal portion S is peeled off when the diaper 1 is in the unfolded state. When suspending the absorbent article taken out from the saline solution, the absorbent article is hung in a state of being folded in half in the vertical direction.
In the step 1, the absorbent article that has been saturated and absorbed with the physiological saline is wound so that the mass of the absorbent article after winding is more than 99% by mass of the mass of the absorbent article before winding. That is, efforts are made to reduce the external force applied to the absorbent article as much as possible by the winding operation so that the physiological saline leaked to the outside by the winding operation of the absorbent article is less than 1% by mass of the saturated absorption amount.
In the step 1, the measurement point of the outer peripheral length C1 of the absorbent article in the state of being rolled up in the vertical direction is a point including the fixing position of the waste tape in the absorbent article. For example, in a state where the diaper 1 is wound up in the vertical direction X, the fixed position (position of the fixed portion 5) of the waste tape 4 in the diaper 1 is the central portion in the lateral direction Y of the diaper 1, so that the outer peripheral length C1 The measurement point is the central portion of the diaper 1 in the lateral direction Y.

The reason why the outer peripheral length C2 is not measured immediately after the waste tape is wrapped around the outer surface of the absorbent article and left for 20 minutes with the waste tape wrapped in the step 2 is to stabilize the outer peripheral length C2. Because. That is, for a certain period of time immediately after wrapping the waste tape around the outer surface of the absorbent article in a state where the saline solution is saturated and absorbed, the non-woven fabric or the like that forms the outer surface of the absorbent article according to the stretching stress of the waste tape. The outer peripheral length C2 is unstable and changes due to reasons such as the sheet slipping and the water-absorbent polymer in the absorbent body of the absorbent article being deformed. Therefore, in the step 2, 20 minutes is adopted as the time required for the outer peripheral length C2 to stabilize, and the outer peripheral length C2 is measured 20 minutes after the waste tape is wound.

<Measurement method of winding packing index>
After the absorbent article to be measured (for example, diaper 1) is saturated and absorbed with physiological saline in a measurement environment having an ambient temperature of 23 ± 2 ° C. and a relative humidity of 50 ± 5%, the inner surface of the absorbent article in an unfolded state. Is wound in the vertical direction with the inside in the winding direction, and the outer peripheral length C1 (see FIG. 8A) in the winding direction is measured (step 1). This step 1 is the same as the step 1 of the above-mentioned <Measuring method of swelling compact index>.
Further, when the disposal tape fixed to the outer surface of the absorbent article to be measured (for example, the disposal tape 4 provided in the diaper 1) is extended to 50% of the breaking elongation, the elongation direction of the disposal tape The total length T50 is measured (step 3).
Then, the winding packing index of the absorbent article to be measured is calculated by the following equation.
Winding packing index = T50 / C1
In the step 3, the total length T50 in the elongation direction of the waste tape can be measured by the following <tensile test>.

<Tensile test> (Measuring method of total length (T50) when the breaking elongation of the waste tape is extended by 50%)
This test is performed in an environment where the ambient temperature is 23 ± 2 ° C. and the relative humidity is 50 ± 5%, without removing the waste tape to be measured from the absorbent article and keeping it fixed to the absorbent article. Taking the case of measuring the total length T50 of the waste tape 4 of the diaper 1 in the extension direction as an example, first, a pair of Tensilon tensile testers (manufactured by Shimadzu Corporation, product name "Autograph AG-X"). Only the expansion / contraction portion 8 of the waste tape 4 is set between the chucks so that the longitudinal direction thereof coincides with the extension direction. At this time, a commercially available adhesive tape is attached to the other parts of the waste tape 4 other than the elastic part 8 (fixing part 5, fastening part 7, etc.) so as not to be plastically deformed during the tensile test. Then, the other part is reinforced. Next, the expansion / contraction portion 8 is extended by increasing the distance between the chucks at a constant speed (300 mm / sec), and the distance between the chucks when the expansion / contraction portion 8 breaks is measured. Then, the breaking elongation of the expansion / contraction portion 8 is calculated by subtracting the distance between the chucks before the start of expansion of the expansion / contraction portion 8 (the initial distance between the chucks) from the distance between the chucks at the time of breaking of the expansion / contraction portion 8. The elongation of 50% of the breaking elongation of the stretchable portion 8 and the total length (fixed) of the waste tape 4 in the natural state (non-stretched state) and the unfolded state (unfolded state) in the longitudinal direction (longitudinal direction X). The sum of the lengths from the portion 5 to the fastening portion 7) is taken as the total length T50 in the extension direction of the waste tape 4.

The total number of size groups included in the series of absorbent articles of the present invention is 2 or more, and therefore, the above-mentioned "swelling compact index or winding packing index of absorbent articles" relatively small size group> relative. The "large-small relationship" (hereinafter, also referred to as "exponential large-small relationship") of a "large size group" can be established not only between two size groups but also between three or more size groups.
In the following, the present invention will be described by setting the total number of size groups included in the series of absorbent articles of the present invention as “n” and dividing the case into cases according to the total number n of the size groups.

For example, in the case of "n = 2", of the two size groups, the relatively smaller size group (the group having the smallest absorbent article size among the size groups included in the series) is "the first". When the "group 1" and the relatively large size group (the group having the largest size of the absorbent article among the size groups included in the series) are defined as the "second group", the two groups are connected to each other. Then, the size relationship of "first group <second group" is established. Then, in this case, one exponential magnitude relationship of "first group> second group" is established.
In the present invention, when the total number n of the size groups is 2, "the total number of size groups = the number of size groups constituting one exponential magnitude relationship".

Further, in the case of "n ≧ 3", the size relationship of "first group <... <third (n-1) group <nth group" is established between the three or more size groups. do. In such a size magnitude relationship, when "n = 3", there is no other size group between the first group and the (n-1) group, and when "n ≧ 4". , Other size groups exist, and the "other size groups" are from the second group, the third group, the fourth group, ..., And 2 according to the total number n of the size groups. Consecutive numbers are assigned up to the value immediately before n-1). The "first group" is the group in which the size of the absorbent article is the smallest among the size groups included in the series, and the "nth group" is the group of the absorbent articles in the size group included in the series. The largest group of sizes. Further, if the group sandwiched between these two groups, that is, for example, n ≧ 5, the second group, the third group, and the fourth group [= the (n-1) group] are each. The size of the absorbent article is larger than that of the first group, and the size of the absorbent article is smaller than that of the fifth group [= nth group].

For example, in a series of absorbent articles, the first group (for example, a group of S size absorbent articles), the second group (for example, a group of M size absorbent articles), and the third group in ascending order of size. When three groups of groups (for example, a group of L-sized absorbent articles) are included, that is, a size relationship of "first group <second group <third group" is established. In the case, the total number n of the size group is 3. When n ≧ 3 as described above, in the present invention, 1) a form in which the exponential magnitude relationship is established only in a part of a plurality of size groups, that is, in the above example, “first group> second group”. Group = 3rd group "or" 1st group = 2nd group> 3rd group "and 2) a form in which one exponential magnitude relationship is established for all of a plurality of size groups. That is, in the case of the above example, there may be a form in which one magnitude relationship of "first group> second group> third group" is established. Then, in the form of 2) above, "the total number of size groups (three in the above example) = the number of size groups constituting one exponential magnitude relationship (three in the above example)". On the other hand, in the form of 1) above, the number of exponential magnitude relations established in one series of absorbent articles is one or more, and "total number of size groups (three in the above example)> one. The number of size groups that make up the exponential magnitude relationship (two in the above example). "

Hereinafter, the form of 1) above, that is, the form in which the relationship of "total number of size groups> number of size groups constituting one exponential magnitude relationship" is established is also referred to as "first specific form", and the form of 2) above. That is, the form in which the relationship of "total number of size groups = number of size groups constituting one exponential magnitude relationship" is established is also referred to as "second specific form".

Generally, the size of the absorbent article is tailored to the wearer's age and body shape. For example, if the series of absorbent articles includes four types of disposable diapers, S size, M size, L size, and Big size, in ascending order, the total number n of the size groups is 4, and the "S size group (S size group). 1st group) <M size group (2nd group) <L size group (3rd group, 3rd (m-1) group) <Big size group (4th group, mth group) The size relationship of "group)" is established.
Here, in the first specific embodiment, for example, for the swelling compact index (first invention) or the winding packing index (second invention), "S size group (first group)> M size group (second invention). The two exponential magnitude relationships of "group)" and "L size group (third group)> Big size group (fourth group)" are established, but the M size group (second group) and L In relation to the size group (third group), the swelling compact index or the winding packing index may be the same as each other, and the exponential magnitude relationship may not be established. In this case, the number of exponential magnitude relations established in one series of absorbent articles is 2. Further, while the total number n of the size groups is 4, the sizes constituting one exponential magnitude relationship (“S size group> M size group” or “L size group> Big size group”). The number of groups is two.
On the other hand, in the second specific embodiment, regarding the swelling compact index (first invention) or the winding packing index (second invention), "S size group (first group)> M size group (second group)>. The exponential magnitude relationship of "L size group (third group)> Big size group (fourth group)" is established. In this case, the number of exponential magnitude relations established in one series of absorbent articles is 1. Further, while the total number n of the size groups is 4, the number of size groups constituting one exponential magnitude relationship is also 4.

Both the first invention and the second invention include a plurality of absorbent articles of different sizes, and the plurality of absorbent articles are divided into a plurality of size groups corresponding to the number of types of the size. Due to the enhanced product lineup, it can be used by wearers of a wide variety of body shapes for various purposes (for example, for daytime, nighttime, outing, etc.) for a relatively long period of time that accompanies physical growth. , It is possible to have the series of absorbent articles of the present invention used habitually.
In addition, in at least a part of the plurality of size groups, the magnitude relationship of "relatively small size group> relatively large size group" is established for the swelling compact index of the absorbent article. (1st invention), or because the magnitude relationship of "relatively small size group> relatively large size group" is established for the winding packing index of the absorbent article (2nd invention). That is, since the size relationship of the absorbent article and the size relationship (exponential size relationship) of the swelling compact index (first invention) or the winding packing index (second invention) are opposite, the use swelled by absorption of excrement. It is possible to dispose of the already absorbent article compactly and hygienically by using the disposal tape provided in the absorbent article.
That is, the series of absorbent articles of the present invention can compactly and hygienically dispose of used absorbent articles regardless of changes in the properties of excrement due to use or growth of the body.

Regarding the second invention, from the viewpoint of ensuring that the above-mentioned effects are more reliably exerted, the exponential magnitude relationship, that is, the "relatively small size group> relatively size" regarding the winding packing index of the absorbent article. In the magnitude relationship of "large size group", it is preferable that the magnitude relationship of "relatively small size group> relatively large size group ≥ 0.6" is established. That is, in the magnitude relationship of the winding packing index of the absorbent article, it is preferable that the winding packing index of the absorbent article is 0.6 or more in each of the plurality of size groups constituting the magnitude relationship.

In each of the first invention and the second invention, the size of each of the plurality of size groups included in the series of absorbent articles has the above-mentioned exponential magnitude relationship between at least a part of the plurality of size groups. On the premise that it is established, there is no particular limitation, and it can be appropriately set according to the use of the absorbent article and the like.
For example, when the series of absorbent articles is for infants (ages 0 to 4 years) and the number of size groups constituting one exponential magnitude relationship is 2 (the total number of size groups is 2). ), The size of each absorbable article in the first group (relatively small size group) and the second group (relatively large size group), that is, "saturated absorption of saline". The "longitudinal total length under non-stress of the unstressed and non-elongated absorbent article" (hereinafter, may be abbreviated as "longitudinal total length under non-stress (of the absorbent article)") is in the following range. It is preferable to be in.
The total length in the longitudinal direction of the first group of absorbent articles under non-stress is preferably 200 mm or more, more preferably 250 mm or more, and preferably 400 mm or less, more preferably 350 mm or less.
The total length in the longitudinal direction of the second group of absorbent articles under non-stress is preferably 250 mm or more, more preferably 300 mm or more, and preferably 450 mm or less, more preferably 400 mm or less.

Further, when the series of the absorbent articles is for infants (ages 0 to 4 years old) and the number of size groups constituting one exponential magnitude relationship is 3, as described above, 1 In one exponential magnitude relationship, "first group <second group <third group" is established, and the third group constitutes a relatively large size group (the one exponential magnitude relationship is formed). Where the size of the absorbent article is the largest in the size group), the total length of the absorbent article in the third group under non-stress is preferably 300 mm or more, more preferably 350 mm or more. The thickness is preferably 500 mm or less, more preferably 450 mm or less. When the number of size groups constituting one exponential magnitude relationship is 3, the total length of the absorbent articles in the first group and the second group under non-stress is 2 in the size group. It may be the same as that in the case of.

In the first invention, the swelling compact index of each of the plurality of size groups included in the series of absorbent articles has a size relationship as described above in at least a part of the plurality of size groups. On the premise that the opposite magnitude relationship is established, there is no particular limitation, and it can be appropriately set according to the use of the absorbent article and the like.
For example, when the series of absorbent articles is for infants (ages 0 to 4 years) and the number of size groups constituting one exponential magnitude relationship is 2 (the total number of size groups is 2). In the case of), the swelling compact index of the absorbent articles in each of the first group and the second group is preferably in the following range.
The swelling compact index of the first group of absorbent articles is preferably 0.1 or more, more preferably 0.2 or more, and preferably 0.6 or less, more preferably 0.4 or less.
The swelling compact index of the second group of absorbent articles is preferably 0.05 or more, more preferably 0.1 or more, and preferably 0.5 or less, more preferably 0.3 or less.

Further, when the series of the absorbent articles is for infants (age 0 to 4 years old) and the number of size groups constituting one exponential magnitude relationship is 3 or more (the total number of size groups is 3 or more). (In the case of 3 or more), as described above, in the one exponential magnitude relationship, "first group <... <group of (n-1) <nth group" is established, and the nth group is established. Where the group is a relatively large size group (the group having the largest size of the absorbent article among the size groups constituting the one exponential magnitude relationship), the nth group has a swelling compact index (minimum). The swelling compact index) is preferably 0 or more, more preferably 0.05 or more, and preferably 0.4 or less, more preferably 0.2 or less.

In the second invention, the winding packing index of each of the plurality of size groups included in the series of absorbent articles has a size relationship as described above in at least a part of the plurality of size groups. On the premise that the opposite magnitude relationship is established, there is no particular limitation, and it can be appropriately set according to the use of the absorbent article and the like.
For example, when the series of absorbent articles is for infants (ages 0 to 4 years) and the number of size groups constituting one exponential magnitude relationship is 2 (the total number of size groups is 2). In the case of), the winding packing index of the absorbent articles in each of the first group and the second group is preferably in the following range.
The winding packing index of the first group of absorbent articles is preferably 0.7 or more, more preferably 0.8 or more, and preferably 1.5 or less, more preferably 1.2 or less.
The winding packing index of the second group of absorbent articles is preferably 0.6 or more, more preferably 0.7 or more, and preferably 1.2 or less, more preferably 1.0 or less.

Further, when the series of the absorbent articles is for infants (age 0 to 4 years old) and the number of size groups constituting one exponential magnitude relationship is 3 or more (the total number of size groups is 3 or more). (In the case of 3 or more), as described above, in the one exponential magnitude relationship, "first group <... <group of (n-1) <nth group" is established, and the nth group is established. Where the group is a relatively large size group (the group having the largest size of the absorbent article among the size groups constituting the one exponential magnitude relationship), the winding packing index (minimum) of the nth group. The winding packing index) is preferably 0.5 or more, more preferably 0.6 or more, and preferably 1.0 or less, more preferably 0.9 or less.

The swelling compact index and the winding packing index are the size of the absorbent article (the total length of the unstressed and unstretched absorbent article under stress) and the elongation of the waste tape, respectively. It can be adjusted by adjusting the length in the direction as appropriate.

In both the first invention and the second invention, the total length of the waste tape 4 in the unfolded and non-stretched state in the longitudinal direction (the total length in the vertical direction X in the present embodiment) is regardless of the total number of size groups. , The above-mentioned exponential magnitude relationship may be the same or different among multiple size groups, but it prevents the complexity of material management with different overall lengths and the trouble that the target winding state cannot be achieved due to the wrong material. From the viewpoint, it is preferable that they are the same.
The above-mentioned "expanded and non-stretched state" means that the waste tape fixed to the outer surface of the absorbent article is in the unfolded state when it is folded like the above-mentioned waste tape 4, and is in the unfolded state. A state (natural state) in which no external force acts on the waste tape. Further, the above-mentioned "same" means a case where the absolute value of the difference in length in the expansion and contraction direction in the natural state of the two waste tapes to be compared is within 10 mm.
It should be noted that not only the plurality of size groups for which the exponential magnitude relationship is established as described above, but also all of the plurality of size groups included in the series have the total length in the longitudinal direction of the waste tape 4 in the unfolded and non-stretched state. It may be the same.

In both the first invention and the second invention, the length in the width direction of the stretchable portion (stretchable portion 8 in the present embodiment) of the waste tape 4 fixed to the outer surface of the diaper 1 in the non-stretched state. (The length in the direction orthogonal to the longitudinal direction, the length in the lateral direction Y in the present embodiment, the so-called width) is between a plurality of size groups in which the above-mentioned exponential magnitude relationship is established regardless of the total number of size groups. It may be the same or different, but as the size increases, the length (width) of the lateral Y of the diaper 1 also increases, and the larger the width, the more compact the state can be maintained. It is preferable that the size relationship of the small size group ≤ the relatively large size group is established.
That is, when the total number of size groups is 2 (n = 2), the first group (relatively small size group) and the second group (relatively large size) are the two groups. Groups) It is preferable that the magnitude relationship of "first group ≤ second group" is established with respect to the width of the stretchable portion of the waste tape 4 in the non-stretched state.
The ratio of the width of the stretchable portion of the waste tape 4 in the first group in the non-stretched state to that in the second group is preferably 0.5 as the former / the latter in the case of the former <the latter. The above is more preferably 0.6 or more, preferably 1.0 or less, and more preferably 0.9 or less.
When the total number of size groups is 3 or more (n ≧ 3), the elasticity of the waste tape 4 is increased between the plurality of size groups in which the above-mentioned exponential magnitude relationship is established among the three or more size groups. It is preferable that the size relationship of "first group ≤ ... ≤ (n-1) group ≤ nth group" is established with respect to the width of the portion to be held in the non-extended state.
It should be noted that the width of the stretchable portion of the waste tape 4 in the non-stretched state is not only between the plurality of size groups for which the exponential magnitude relationship is established as described above, but also among all the plurality of size groups included in the series. For, the size relationship of the size group having a relatively small size ≤ the size group having a relatively large size may be established.

For the waste tape 4 fixed to the outer surface of the diaper 1, the stress immediately after the 50% elongation at break was continued for 20 minutes was σ50 ₂₀ , and the stress immediately after the elongation at break was 50%. When σ500 is set to, in both the first invention and the second invention, the ratio σ50 ₂₀ / _{σ500 0 between} σ50 ₂₀ and σ50 ₀ has the above-mentioned exponential magnitude relationship regardless of the total number of size groups. The plurality of size groups that are established may be the same or different, but the usability does not change even when the size of the diaper 1 is changed due to the change in the body shape of the wearer, and the waste tape 4 is used. It is preferable that they are the same from the viewpoint of preventing troubles such as breakage.
The term "same" as used herein means that the absolute value of the difference in shrinkage stress between the two waste tapes to be compared is within 10%.
That is, when the total number of size groups is 2 (n = 2), the first group (relatively small size group) and the second group (relatively large size) are the two groups. Group) It is preferable that the ratio σ50 ₂₀ / σ500 ₀ for the waste tape 4 is the same.
When the total number of size groups is 3 or more (n ≧ 3), the ratio of the waste tape 4 to the waste tape 4 is σ50 among the plurality of size groups in which the above-mentioned exponential magnitude relationship is established among the three or more size groups. It is preferable that ₂₀ / _σ500 is the same.
It should be noted that the ratio σ50 ₂₀ / σ50 ₀ for the waste tape 4 may be the same not only among the plurality of size groups for which the exponential magnitude relationship is established as described above, but also among all the plurality of size groups included in the series.

The breaking elongation of the waste tape 4 can be measured by the above <tensile test>. The stress σ50 ₀ is the stress at the time when the test piece (the stretchable portion 8 of the waste tape 4) is stretched to 50% of its breaking elongation in the above <tensile test>, and the stress σ50 ₂₀ is the stress σ50 ₀ . It is the stress at the time when the state of the test piece at the time of measurement is maintained for 20 minutes from the time of the measurement. Stress relaxation can occur when the waste tape is continuously pulled, but by maintaining the state of the test piece at the time of measuring the stress _σ500 for 20 minutes in this way, it is possible to measure the stable stress applied to the absorbent article. It will be possible. Since the degree of stress relaxation may differ depending on the temperature and humidity environment, the above <tensile test> needs to be performed in a constant environment with an atmospheric temperature of 23 ± 2 ° C. and a relative humidity of 50 ± 5%.
The upper limit of the breaking elongation of the waste tape 4 is not particularly limited, but is preferably 500 mm or less, more preferably 400 mm or less, from the viewpoint of preventing deterioration of usability due to excessive stretching of the waste tape 4.
In order to obtain the waste tape 4 that satisfies the conditions of elongation at break and stress, it is important to select an appropriate material as the elastic portion 8 of the waste tape 4. As the material of the stretchable portion 8, for example, a “stretchable film” that can be used as a constituent material of the stretchable portion sheet piece 80 described above can be used.

The waste tape 4 has a breaking elongation of 100 mm or more (preferably 130 mm or more, more preferably 150 mm or more), and the stress σ50 ₂₀ immediately after continuing the 50% elongation state of the breaking elongation for 20 minutes is the breaking elongation. It is preferable that the stress is 20% or more (preferably 30% or more, more preferably 40% or more) of the stress σ500 immediately after the 50% elongation state is reached (satisfying σ50 ₂₀ / _{σ50 0 ≧} 0.2). ..
The waste tape 4 satisfying the conditions of breaking elongation and stress is in the radial direction of the rolled diaper 1 from the time when the waste tape 4 is wound in the winding direction of the rolled diaper 1 rolled up in the vertical direction X. Since the shrinking force can be continuously exerted inward, the outer diameter of the diaper 1 that has been rolled up and wrapped with the waste tape 4 shrinks over time, and the disposal form of the diaper 1 can be made more compact. ..

In the present embodiment, as described above, each of the plurality of size groups included in the series of absorbent articles includes a plurality of diapers 1 and a packaging container 16 for accommodating the plurality of diapers 1 (Fig.). 7), when each diaper 1 is taken out from the inside of the packaging container 16 and placed under non-stress, specifically, if it is in the folded state, the state is released. When it is allowed to stand under normal temperature and pressure, it is preferable that the waste tape 4 warps convexly toward the fixed side.
In the present embodiment, the plurality of diapers 1 inside the packaging container 16 are each folded in half in the vertical direction X with the ventral side A (front body F) inside, and the diapers 1 are folded in half in the packaging container 16. When it is taken out from the container and placed under non-stress, as shown in FIG. 9A, it is convex to the dorsal side C side (rear body R side) to which the waste tape 4 is fixed, in other words, the ventral side A. It warps toward the side (F side of the front body), and the position of the fold line (the central portion of the diaper 1 in the vertical direction X) becomes the top of the convex or the bottom of the concave. As shown in FIG. 9B, the diaper 1 whose fixed side of the waste tape 4 is warped in this way is the fixed side of the waste tape 4 even when the side seal portion S is peeled off and expanded in a flat shape. Convex to (outer surface side of diaper 1), in other words, concave to the non-fixed side (inner surface side of diaper 1) of the waste tape 4. Therefore, in any of the states of FIGS. 9 (a) and 9 (b), the diaper 1 is placed on the non-fixed side of the disposal tape 4 (inseam B side in FIG. 9 (a) and ventral side in FIG. 9 (b)). It is easy to wind up the diaper 1 in the vertical direction X from the portion A side to the fixed side (dorsal side portion C side) of the disposal tape 4, and it is easy to make the disposal form of the diaper 1 more compact.

When the diaper 1 is thus taken out of the packaging container 16 and placed under non-stress, it becomes convex on the fixed side of the waste tape 4 (concave on the non-fixed side of the waste tape 4). As an example of the method for this, the elastic member is vertically extended in the non-fixed side of the waste tape, that is, the region including the central portion (inseam) in the vertical direction on the inner surface side (skin facing surface side) of the absorbent article. There is a method of fixing in a state. In this respect, as described above, in the diaper 1 of the present embodiment, the leg gather forming elastic member 15 and the leak-proof cuff forming elastic member 31 are fixed to the crotch portion B in an extended state in the vertical direction X, respectively. Therefore, when it is taken out from the packaging container 16 and placed under non-stress, it tends to warp convexly toward the fixed side of the disposal tape 4. Further, as another example of the above method, as shown in FIGS. 2 and 3, a portion (in the elastic member 15) that overlaps with the absorber 23 (absorbent body 2) in the leg gather forming elastic member 15 in a plan view. A method of locating the portion extending in the lateral direction Y in the inseam B) closer to the ventral side A than the center of the vertical direction X of the diaper 1 (vertical center line CLx) can be mentioned.

In the present embodiment, as described above, since the waste tape 4 is provided so as to be extendable in the vertical direction X from the fixing portion 5 with the outer surface of the diaper 1 as a starting point, the diaper 1 is rolled up and rolled up in the vertical direction X. It is possible to smoothly perform a series of disposal treatments (see FIG. 6) in which the waste tape 4 is stretched and wound in the winding direction of the rolled diaper 1 and is formed by the disposal treatment. The disposal form of the diaper 1 is described above, in combination with the fact that when the diaper 1 is taken out from the packaging container 16 and placed under non-stress, it tends to warp convexly toward the fixed side of the disposal tape 4. , Can be relatively compact.

In the present embodiment, as described above, the waste tape 4 is in a state of being folded on the outer surface of the diaper 1 when not in use, as shown in FIG. 5, but the waste tape 4 is folded with reference to FIG. The total length of the waste tape 4 in the vertical direction X when the waste tape 4 is unfolded in the vertical direction X without expanding and contracting from the state (the total length in the longitudinal direction of the waste tape 4 in the unfolded and non-stretched state) L2 is The total length L1 of the diaper 1 in the vertical direction X under non-stress is preferably 40% or less, more preferably 30% or less. When the magnitude relationship of "L2 / L1 ≦ 0.4" is established, the waste tape 4 is wound while being extended in the winding direction of the diaper 1 with respect to the diaper 1 which is wound and rolled in the vertical direction X. Since the shrinkage force of the disposal tape 4 at that time can be relatively strong, the disposal form of the diaper 1 can be made more compact.

In the present embodiment, as shown in FIGS. 2 and 3, the absorber 23 has a groove portion 26 extending in the vertical direction X. As shown in FIG. 4, the groove portion 26 is formed in the absorbent core 24 included in the absorbent body 23, and has an opening on the skin facing surface of the absorbent body 23 (absorbable core 24).
In the present embodiment, the groove portion 26 has a rectangular shape in a plan view, and one groove portion 26 is formed in the central portion of the absorber 23 (absorbent core 24) in the lateral direction in the crotch portion B. The plan view shape, number, and arrangement location of the groove portion 26 are not particularly limited, and the groove portion 26 may be curved on the assumption that the groove portion 26 extends in the vertical direction X.
In the present embodiment, in the groove portion 26, the skin-side core wrap sheet 25 that covers the skin-facing surface of the absorbent core 24 and the non-skin-side core wrap sheet 25 that covers the non-skin-facing surface of the absorbent core 24 are adhesives. , Is joined by joining means such as fusion.

The groove portion 26 is a space portion in which the material for forming the absorbent core 24 (water-absorbent material such as wood pulp and water-absorbent polymer) does not exist. The term "no forming material" as used herein includes not only a form in which the forming material does not exist at all but also a form in which a very small amount of the forming material is present so as to be recognized as a space. That is, the groove portion 26 may be a penetrating type that penetrates the absorbent core 24 in the thickness direction, or may be a non-penetrating type that does not penetrate the absorbent core 24 in the thickness direction. The penetrating groove 26 has openings on both the skin-facing surface and the non-skin-facing surface of the absorber 23 (absorbent core 24). The non-penetrating groove portion 26 may have an opening on the skin facing surface of the absorber 23 (absorbent core 24), and conversely, the non-penetrating groove portion 26 may have an opening on the skin facing surface. ..

The absorbent core 24 having the groove 26 can be manufactured by using a known fiber stacking device in the same manner as the method for manufacturing the absorbent core of this kind of absorbent article. The fiber stacking device is typically provided with a rotating drum having a recess for integration on the outer peripheral surface, and while rotating the rotating drum, the core forming material is supplied to the outer peripheral surface in a scattered state to accumulate the core forming material. The fibers are stacked in the collecting recess by suction from the bottom surface of the collecting recess, and the fiber stack in the collecting recess is separated from the collecting recess by suction from the suction means arranged opposite to the collecting recess. , A device that transfers onto a suction means. In the fiber stacking device having such a configuration, by arranging a non-or breathable member on a part of the breathable bottom surface of the accumulation recess, the bottom surface is made a non-or breathable part. When the core-forming material is stacked, it becomes difficult for the core-forming material to be stacked in the non-or breathable portion, and the amount of the core-forming material in the non-or breathable portion is higher than that of other parts on the bottom surface. Will decrease. Therefore, by manufacturing an absorbent core according to a conventional method using a fiber stacking device equipped with a rotating drum in which a part of the bottom surface of the accumulation recess is a non-or breathable portion, the non-or difficult The portion corresponding to the breathable portion becomes the groove portion 26, and the absorbent core 24 having the groove portion 26 can be obtained.
Alternatively, after the absorbent core 24 having no groove 26 is manufactured according to a conventional method, the groove 26 is formed by removing a part or all of the core forming material of the portion to be formed of the groove 26 in the absorbent core 24. An absorbent core 24 having is obtained.

The groove portion 26 is designed so that the absorber 23 does not disappear even if the liquid is saturated and absorbed. This can be done by setting the depth of the groove portion 26 to a certain depth or more, and / or setting the width of the groove portion 26 (the length in the lateral direction Y) to a certain length or more.
When the groove 26 that does not disappear even if the absorber 23 saturatedly absorbs the liquid extends in the vertical direction X in the absorber 23, the used diaper 1 that absorbs and holds the excrement is moved to the vertical direction X. When the diaper is rolled up and rolled up, the groove portion 26 is formed in the rolled-up state of the diaper 1 in a state where the waste tape 4 is unfolded and rolled up because the outer peripheral length in the winding direction is shorter than that of other parts. When wrapping around the diaper 1, the waste tape 4 easily engages with the formation position of the groove 26, which facilitates wrapping. Further, since the disposal tape 4 is wound around a portion of the rolled diaper 1 having a relatively short outer peripheral length, the swelling compact index and the winding packing index become large, and the disposal form can be further compacted.

From the viewpoint of ensuring that the above-mentioned action and effect of the groove portion 26 (compactification of the disposal form of the diaper 1 and the like) can be more reliably performed, the groove portion 26 is the disposal tape 4 as shown in FIGS. 2 and 3. It is preferably located on a virtual straight line (horizontal center line Cly in the figure) extending in the vertical direction X through the fixed portion (fixed portion 5) with the outer surface of the diaper 1.

FIG. 11 schematically shows a cross section along the horizontal direction Y of a disposal form formed by winding the diaper 1 in the vertical direction X and winding the disposal tape 4 in the winding direction. With reference to FIG. 11, a portion (expandable portion) having elasticity in the vertical direction X in the waste tape 4 with respect to the length (width) W0 of the groove portion 26 in the lateral direction Y in the diaper 1 saturated and absorbed with physiological saline. The ratio (W1 / W0) of the length (width) W1 in the direction orthogonal to the extension direction in the state of 50% elongation at break in 8) is preferably 1.5 or less, more preferably 1.0 or less. be. By satisfying this, the used diaper 1 that has absorbed and held the excrement is rolled up in the vertical direction X to be in a rolled state, and the waste tape 4 is placed along the formation position of the groove 26 in the rolled diaper 1. At that time, as described above, the waste tape 4 easily engages with the groove portion 26. In particular, when W1 / W0 is less than 1, the waste tape 4 is likely to be caught in the groove 26 as shown in FIG. 11, and the engagement of the waste tape 4 with the groove 26 becomes stronger, so that the diaper is used. The disposal form of 1 tends to be more compact.
The above-mentioned "diaper 1 (absorbable article) saturated and absorbed with physiological saline" is obtained by the saturated absorption treatment of physiological saline in step 1 of the above <method for measuring swelling compact index>.
When the width W0 of the groove portion 26 changes in the depth direction of the groove portion 26 and is non-uniform, the width at the opening of the groove portion 26 (the length in the lateral direction Y) is defined as the width W0. When the width W0 of the groove portion 26 changes in the length direction (vertical direction X) of the groove portion 26 and is non-uniform, the maximum width is set to the width W0.
The width W1 of the waste tape 4 is the width (direction orthogonal to the tensile direction) at the time when the test piece (expandable portion 8 of the waste tape 4) is stretched to 50% of its breaking elongation in the above <tensile test>. Length).

FIG. 12 shows a schematic configuration of a diaper 1A, which is another embodiment of the absorbent article according to the present invention. Regarding the diaper 1A, a configuration different from that of the diaper 1 described above will be mainly described, and the same components will be designated by the same reference numerals and the description thereof will be omitted. As for the configuration in which the diaper 1A is not particularly described, the description of the diaper 1 is appropriately applied.

In the diaper 1A, as shown in FIG. 12A, two groove portions 26 are formed in the portion of the absorber 23 (absorbent core 24) located at the inseam B. The two groove portions 26, 26 are separated by a predetermined distance in the lateral direction Y, and are formed symmetrically with respect to the lateral center line CLy (see FIG. 2). As shown in FIG. 12B, when the diaper 1A is wound up in the vertical direction X and the disposal tape 4 is wound in the winding direction to form a disposal form, one of the two grooves 26, 26 is used for disposal. The tape 4 can be engaged. The diaper 1A also has the same effect as the diaper 1. In particular, since the diaper 1A has a plurality of groove portions 26, it is easy to engage the waste tape 4 with the groove portions 26.

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 waste tape 4 is in a tri-folded state when not in use, but the form of the waste tape 4 when not in use is not particularly limited, and the free portion 6 (fastening portion 7, elastic portion). Assuming that the 8) can extend outward from the fixed portion 5 in the lateral direction Y, for example, it may be folded in half. As the waste tape 4 in the folded state, for example, the fixing portion 5 (fixing portion sheet piece 50) is folded back toward the expansion / contraction portion 8 at one end in the longitudinal direction (inner end in the lateral direction Y). A portion 50'is formed, and the folded portion 50'is joined to one end in the longitudinal direction (inner end in the lateral direction Y) of the expansion / contraction portion 8 (expandable portion sheet piece 80) on the side of the second surface 80b. The fixing portion 5 and the expansion / contraction portion 8 are directly connected to each other, and the fastening portion 7 (the outer end in the lateral direction Y) of the expansion / contraction portion 8 (the expansion / contraction sheet piece 80) is located at the other end in the longitudinal direction. An example is an example in which the sheet pieces 70) for the fastening portion are directly connected to each other.
Further, in the above-described embodiment, the exterior body 11 extends in the vertical direction X from the ventral portion A to the dorsal portion C via the crotch portion B, but instead, the exterior body 11 extends from the ventral portion A to the ventral portion A. A member constituting the (front body) and a member constituting the dorsal side C (rear body) may be independently provided, and the absorbent main body 2 may be bridged and fixed to both members.
All the parts of only one embodiment described above can be mutually used as appropriate.

Further, the following additional notes will be disclosed with respect to the above-described embodiment of the present invention.
<1>
A series of absorbent articles comprising a plurality of absorbent articles of different sizes, wherein the plurality of absorbent articles are divided into a plurality of size groups corresponding to the number of types of the size.
Each of the plurality of absorbent articles has a vertical direction corresponding to the front-back direction of the wearer and a horizontal direction orthogonal to the vertical direction, and is fixed to an absorber that absorbs and holds body fluid and an outer surface of the absorbent article. And with elastic waste tape,
Regarding the swelling compact index measured by the following method of the absorbent article in at least a part of the plurality of size groups, the size group of relatively small size> the size group of relatively large size. A series of absorbent articles that establish a relationship.
<Measurement method of swelling compact index>
After the absorbent article to be measured is saturated and absorbed with physiological saline in an environment of an atmospheric temperature of 23 ± 2 ° C. and a relative humidity of 50 ± 5%, the vertical direction is such that the inner surface of the absorbent article in the unfolded state is inside. Wind up in the direction, and measure the outer circumference length C1 in the winding direction. Further, in a state where the waste tape fixed to the outer surface of the absorbent article after winding is stretched to 50% of the breaking elongation, the absorbent article is wound on the outer surface of the absorbent article in the winding direction. After wrapping along the line and leaving it in that state for 20 minutes, the outer peripheral length C2 of the portion of the absorbent article to which the waste tape is wrapped is measured. Then, the swelling compact index of the absorbent article to be measured is calculated by the following equation.
Swelling compact index = 1- (C2 / C1)
<2>
The number of size groups constituting one magnitude relationship is 2, and the swelling compact index of the absorbent article of the relatively small size group (first group) is 0.1 or more and 0.6. Hereinafter, the series of absorbent articles according to <1>, preferably 0.2 or more and 0.4 or less.
<3>
The number of size groups constituting one magnitude relationship is 2, and the swelling compact index of the absorbent article of the relatively large size group (second group) is 0.05 or more and 0.5. Hereinafter, the series of absorbent articles according to <1> or <2>, preferably 0.1 or more and 0.3 or less.
<4>
The number of size groups constituting one magnitude relationship is 3 or more, and the size of the absorbent article is the largest (the swelling compact index is the smallest) among the plurality of size groups of 3 or more. The absorbent article according to any one of <1> to <3>, wherein the swelling compact index (minimum swelling compact index) is 0 or more and 0.4 or less, preferably 0.05 or more and 0.2 or less. series.

<5>
A series of absorbent articles comprising a plurality of absorbent articles of different sizes, wherein the plurality of absorbent articles are divided into a plurality of size groups corresponding to the number of types of the size.
Each of the plurality of absorbent articles has a vertical direction corresponding to the front-back direction of the wearer and a horizontal direction orthogonal to the vertical direction, and is fixed to an absorber that absorbs and holds body fluid and an outer surface of the absorbent article. And with elastic waste tape,
Regarding the winding packing index measured by the following method of the absorbent article in at least a part of the plurality of size groups, the size group of relatively small size> the size group of relatively large size. A series of absorbent articles that establish a relationship.
<Measurement method of winding packing index>
After the absorbent article to be measured is saturated and absorbed with physiological saline in an environment of an atmospheric temperature of 23 ± 2 ° C. and a relative humidity of 50 ± 5%, the vertical direction is such that the inner surface of the absorbent article in the unfolded state is inside. Wind up in the direction, and measure the outer circumference length C1 in the winding direction. Further, the total length T50 in the elongation direction of the waste tape when the waste tape fixed to the outer surface of the absorbent article to be measured is stretched to 50% of the breaking elongation is measured. Then, the winding packing index of the absorbent article to be measured is calculated by the following equation.
Winding packing index = T50 / C1
<6>
The series of absorbent articles according to <5>, wherein in the size relationship, the size group having a relatively small size> the size group having a relatively large size ≧ 0.6 is established.
<7>
The number of size groups constituting one magnitude relationship is 2, and the winding packing index of the absorbent article of the relatively small size group (first group) is 0.7 or more and 1.5. Hereinafter, the series of absorbent articles according to <5> or <6>, preferably 0.8 or more and 1.2 or less.
<8>
The number of size groups constituting one magnitude relationship is 2, and the winding packing index of the absorbent article of the relatively large size group (second group) is 0.6 or more and 1.2. Hereinafter, the series of absorbent articles according to any one of <5> to <7>, preferably 0.7 or more and 1.0 or less.
<9>
The number of size groups constituting one magnitude relationship is 3 or more, and the size of the absorbent article is the largest (the winding packing index is the smallest) among the plurality of size groups of 3 or more. The absorbability according to any one of <5> to <8>, wherein the winding packing index (minimum winding packing index) is 0.5 or more and 1.0 or less, preferably 0.6 or more and 0.9 or less. A series of goods.

<10>
The number of the size groups constituting one magnitude relationship is smaller than the total number of the plurality of size groups (total number of the size groups> the number of the size groups constituting one exponential magnitude relationship). 1), the series of absorbent articles according to any one of <1> to <9>.
<11>
The number of the size groups constituting one magnitude relationship is the same as the total number of the plurality of size groups (the total number of the size groups = the number of the size groups constituting the exponential magnitude relationship). 1), the series of absorbent articles according to any one of <1> to <9>.
<12>
The above-mentioned <1> to <11>, wherein the total length of the waste tape in the unfolded and non-stretched state in the longitudinal direction is the same among the plurality of size groups for which the magnitude relationship is established. A series of absorbent articles.
<13>
In the plurality of size groups in which the magnitude relationship is established, the length in the width direction of the stretchable portion of the waste tape in the non-stretched state is the size group having a relatively small size ≤ the relative size. The series of absorbent articles according to any one of <1> to <12>, wherein the size relationship of the large size group is established.
<14>
When the stress immediately after the 50% elongation at break of the waste tape is continued for 20 minutes is σ50 ₂₀ , and the stress immediately after the 50% elongation at break is _σ50 , the stress is σ50. The absorbent article according to any one of <1> to <13>, wherein the ratio σ50 ₂₀ / σ50 ₀ of ₂₀ and σ50 ₀ is the same among the plurality of size groups for which the magnitude relationship is established. series.
<15>
In the waste tape, the stress immediately after the breaking elongation is 100 mm or more and the breaking elongation is 50% stretched for 20 minutes is the stress immediately after the breaking elongation is 50% stretched. % Or more, the series of absorbent articles according to any one of <1> to <14>.
<16>
Each of the plurality of size groups includes the plurality of the absorbent articles and a packaging container containing the plurality of absorbent articles therein.
The absorbent article is convexly warped toward the side to which the waste tape is fixed when it is taken out from the inside of the packaging container and placed under non-stress. A series of absorbent articles according to any one.

<17>
The absorbent according to any one of <1> to <16>, wherein the waste tape is provided so as to be expandable in the vertical direction starting from a fixing portion with the outer surface of the absorbent article at the time of use. A series of goods.
<18>
The disposal tape is in a state of being folded on the outer surface of the absorbent article when not in use, and is for disposal when the disposal tape is unfolded in the vertical direction without expanding and contracting from the folded state. The series of absorbent articles according to <17>, wherein the total length of the tape in the vertical direction is 40% or less of the total length in the vertical direction under non-stress of the absorbent article.
<19>
The series of absorbent articles according to <17> or <18>, wherein the absorber has a groove extending in the vertical direction, and the groove does not disappear even when the absorber saturatedly absorbs a liquid.
<20>
The series of absorbent articles according to <19>, wherein the groove is located on a virtual straight line extending in the vertical direction through a fixing portion of the waste tape with the outer surface of the absorbent article.
<21>
Elongation in a 50% elongation state of the breaking elongation of the longitudinally stretchable portion of the waste tape with respect to the lateral length of the groove in the absorbent article saturated with saline. The series of absorbent articles according to <19> or <20>, wherein the ratio of the lengths in the directions orthogonal to the direction is 1.5 or less.
<22>
The absorbent article is arranged at the crotch portion arranged in the crotch portion of the wearer, the ventral portion arranged on the ventral side of the wearer from the crotch portion, and the dorsal side of the wearer than the crotch portion. <1> A series of absorbent articles according to any one of <21>.
<23>
The absorbent article has a stretchable region having elasticity in the lateral direction in a portion at the same position as the side seal portion in the vertical direction, and the stretchable region is an upper stretchable region located on the waist opening side. Includes a region and a lower stretchable region located on the lower crotch side.
In the unfolded and stretched state of the absorbent article, the vertical length of the upper stretchable region is 10% or more and 70% or less, preferably 20% with respect to the vertical length of the side seal portion. The series of absorbent articles according to <22>, which is 50% or less.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to such Examples.

[Examples 1 to 3, Comparative Examples 1 to 3]
We made multiple types of pants-type disposable diapers with the same basic configuration as the above-mentioned diaper 1 in different sizes. The absorbent body of the produced diaper was provided with a front sheet, an absorber and a back sheet in order from the wearer's skin. As the surface sheet, a hydrophilic air-through non-woven fabric having a basis weight of 25 g / m ² was used. As the back surface sheet, a laminated resin film and a non-woven fabric are made of a polyethylene resin film having a basis weight of 18 g / m ² on the side facing the skin and a hydrophobic spunbonded non-woven fabric having a basis weight of 17 g / m ² on the side facing the non-skin. The body was used. As the absorbent body, a material containing an absorbent core obtained by supporting water-absorbent polymer particles on a fiber stack of wood pulp and a core wrap sheet made of a non-woven fabric covering the outer surface of the absorbent core was used. However, the absorber does not have a groove like the groove 26 described above.
Two types of diapers of different sizes were selected from the produced multiple types of diapers to prepare a series of absorbent articles of Examples or Comparative Examples. Each of the produced absorbent article series is divided into two size groups, a first group containing only relatively small diapers and a second group containing only relatively large diapers. There is. As described above, the "size" here is the total length in the vertical direction under unstressed diapers in a developed and non-stretched state in which physiological saline is saturated and absorbed.

Table 1 shows the dimensions of each part of the diaper in each series of absorbent articles. In the column of "disposal tape" in Table 1, "length" is the total length in the longitudinal direction (vertical direction of the diaper in this example and comparative example) of the unused folded state of the disposal tape. Yes, the "width" is the length in the direction orthogonal to the longitudinal direction of the waste tape in the unused folded state (the lateral direction of the diaper in this example and the comparative example), and is the "expanded length". Is the total length in the longitudinal direction in the unfolded and non-stretched state of the waste tape, and the "non-stretchable portion length" is the total length in the longitudinal direction of the disused tape in the unfolded and non-stretched state, excluding the stretchable portion. It is the total length of the portions, and the "non-stretchable portion length when not stretched" is the length of the stretchable portion among the total length in the longitudinal direction in the unfolded and non-stretched state of the waste tape. Further, in the column of "absorbent article" in Table 1, "amount of pulp" is the total mass of pulp contained in the absorber, and "amount of water-absorbent polymer" is the amount of water-absorbent polymer contained in the absorber. The total mass, and the "saturated absorption amount" is the difference in diaper weight before and after the saturated absorption treatment of the saline solution in step 1 of the above-mentioned <method for measuring the swelling compact index>.
For each Example and Comparative Example, "compactness of disposal form" and "hygiene of disposal form" were evaluated by the following methods, and the results are shown in Table 1.

<Evaluation method for compactness of disposal form>
For all absorbent articles (diapers) included in the series of absorbent articles to be evaluated, 10 specialized panelists rolled up the diapers saturated with saline solution in the vertical direction and rolled them into the rolled diapers. The waste tape was wound in a state of being stretched to about 50% of the breaking elongation to form a disposable diaper. Disposal diapers formed in the same manner with diapers of different sizes were observed and evaluated according to the following evaluation criteria. The results are shown in Table 1 as the average value of the evaluation points of 10 persons.
A: I feel that the discarded diapers are compact in all the size groups included in the series, and the size group with a relatively small size and a large swelling compact index or winding packing index is relatively smaller. I feel that the disposable diapers are more compact than the size group with a large size and a small swelling compact index or winding packing index.
B: I feel that the disposable diapers are compact in all the size groups included in the series, but I do not feel any difference in the compactness of the discarded diapers among the size groups included in the series.
C: There is a size group in the series where you cannot feel the compactness of disposable diapers.

In the above evaluation criteria for the compactness of the disposal form, in addition to the compactness of all the disposal forms of diapers included in the series, the size group with a relatively small size (first) reflects the demands of general users. The difference in the compactness of the diapers in the disposal form between the relatively large size group (second group) and the relatively large size group (second group) is evaluated. Regarding the latter, in general, the smaller the size of disposable diapers for younger ages, the higher the frequency of excretion by diaper wearers, so the number of replacements per day increases, and the number of disposable diapers increases accordingly. Since there is a tendency, general users are particularly strongly demanding that each diaper can be compactly disposed of for relatively small diapers. In consideration of this point, the evaluation criteria set the evaluation item as to whether or not the diaper in the disposal form is more compact in the size group having a relatively small size than in the other size groups.

<Evaluation method of hygiene of disposal form>
For all absorbent articles (diapers) included in the series of absorbent articles to be evaluated, 10 specialized panelists rolled up the diapers saturated with saline solution in the vertical direction and rolled them into the rolled diapers. A waste diaper is formed by winding the waste tape in a state where it is stretched to about 50% of the breaking elongation, and diapers of different sizes are observed and evaluated according to the following evaluation criteria. did. The results are shown in Table 1 as the average value of the evaluation points of 10 persons.
A: In all size groups included in the series, the disposal tape is tightly wrapped around the diaper, making it difficult for excrement to leak through the gaps in the disposable diaper, and the size is relatively small. The size group having a large swelling compact index or winding packing index feels that excrement is less likely to leak from the gap than the size group having a relatively large size and a small swelling compact index or winding packing index.
B: In all the size groups included in the series, the disposal tape is tightly wrapped around the diaper, and it is difficult for excrement to leak from the gaps in the disposable diaper. I do not feel any difference in the difficulty of leaking excrement from the gap.
In the C: series, there is a size group in which excrement does not easily leak from the gaps in the discarded diapers.

In addition, in the above-mentioned evaluation criteria for the hygiene of the disposal form, in addition to the hygiene of all the disposal forms of the diapers included in the series (difficulty in leaking excrement), relative to the request of general users. The difference in hygiene between the small size group (first group) and the relatively large size group (second group) is evaluated. Regarding the latter, in general, the smaller the size of disposable diapers for younger ages, the lower the viscosity and fluidity of the diaper wearer's excrement (especially stool), and therefore the excrement leaks from the disposable diaper. Since there is a tendency for inconveniences to occur, general users strongly request that such inconveniences do not occur for diapers of relatively small size. In the evaluation criteria, in consideration of this point, whether or not the size group having a relatively small size is superior to the other size groups in the hygiene of the disposal form is set as an evaluation item.

As shown in Table 1, each example shows the size of the absorbent article (longitudinal length under unstress, that is, under unstressed, unstressed and unstretched absorbent article saturated with saline. Regarding (total length in the vertical direction), the magnitude relationship of "first group <second group" is established, and both the swelling compact index and the winding packing index have a magnitude relationship opposite to the size of the absorbent article. Since the relationship of "first group> second group" is established, the disposal form is compared with each comparative example in which both the swelling compact index and the winding packing index have the same magnitude relationship as the size of the absorbent article. It was excellent in compactness and hygiene.
In Example 1, the disposal tape is the same in the first group and the second group, and in Example 2, the "length" of the disposal tape differs between the first group and the second group. In Example 3, the "width" of the waste tape differs between the first group and the second group.

1,1A Pants-type disposable diaper X Vertical Y Horizontal F Front body R Back body A Abdominal side B Crotch part C Back side S Side seal part WH Waist opening LH Leg opening G Stretchable area 2 Absorbable body 21 Front sheet 22 Back sheet 23 Absorber 24 Absorbent core 25 Core wrap sheet 26 Groove 3 Leakage-proof cuff 4 Disposable tape 5 Fixed part 50 Fixed part sheet piece 51 Fixed part adhesive part 6 Free part 7 Fastened part 70 Stop Sheet piece for wearing part 71 Adhesive part for fastening part 72 Picking piece 8 Telescopic part 80 Sheet piece for elastic part 81 Adhesive part for elastic part 10 Side flap part 11 Exterior body 12 Outer layer sheet 13 Inner layer sheet 14, 15 Elastic member 16 Packaging container 17 Packaging structure

Claims (13)

A series of absorbent articles comprising a plurality of absorbent articles of different sizes, wherein the plurality of absorbent articles are divided into a plurality of size groups corresponding to the number of types of the size.
Each of the plurality of absorbent articles has a vertical direction corresponding to the front-back direction of the wearer and a horizontal direction orthogonal to the vertical direction, and is fixed to an absorber that absorbs and holds body fluid and an outer surface of the absorbent article. And with elastic waste tape,
Regarding the swelling compact index measured by the following method of the absorbent article in at least a part of the plurality of size groups, the size group of relatively small size> the size group of relatively large size. A series of absorbent articles that establish a relationship.
<Measurement method of swelling compact index>
After the absorbent article to be measured is saturated and absorbed with physiological saline in an environment of an atmospheric temperature of 23 ± 2 ° C. and a relative humidity of 50 ± 5%, the vertical direction is such that the inner surface of the absorbent article in the unfolded state is inside. Wind up in the direction, and measure the outer circumference length C1 in the winding direction. Further, in a state where the waste tape fixed to the outer surface of the absorbent article after winding is stretched to 50% of the breaking elongation, the absorbent article is wound on the outer surface of the absorbent article in the winding direction. After wrapping along the line and leaving it in that state for 20 minutes, the outer peripheral length C2 of the portion of the absorbent article to which the waste tape is wrapped is measured. Then, the swelling compact index of the absorbent article to be measured is calculated by the following equation.
Swelling compact index = 1- (C2 / C1) A series of absorbent articles comprising a plurality of absorbent articles of different sizes, wherein the plurality of absorbent articles are divided into a plurality of size groups corresponding to the number of types of the size.
Each of the plurality of absorbent articles has a vertical direction corresponding to the front-back direction of the wearer and a horizontal direction orthogonal to the vertical direction, and is fixed to an absorber that absorbs and holds body fluid and an outer surface of the absorbent article. And with elastic waste tape,
Regarding the winding packing index measured by the following method of the absorbent article in at least a part of the plurality of size groups, the size group of relatively small size> the size group of relatively large size. A series of absorbent articles that establish a relationship.
<Measurement method of winding packing index>
After the absorbent article to be measured is saturated and absorbed with physiological saline in an environment of an atmospheric temperature of 23 ± 2 ° C. and a relative humidity of 50 ± 5%, the vertical direction is such that the inner surface of the absorbent article in the unfolded state is inside. Wind up in the direction, and measure the outer circumference length C1 in the winding direction. Further, the total length T50 in the elongation direction of the waste tape when the waste tape fixed to the outer surface of the absorbent article to be measured is stretched to 50% of the breaking elongation is measured. Then, the winding packing index of the absorbent article to be measured is calculated by the following equation.
Winding packing index = T50 / C1 The series of absorbent articles according to claim 2, wherein in the size relationship, the size group having a relatively small size> the size group having a relatively large size ≧ 0.6 is established. The absorbability according to any one of claims 1 to 3, wherein the total length of the waste tape in the unfolded and non-stretched state in the longitudinal direction is the same among the plurality of size groups for which the magnitude relationship is established. A series of goods. In the plurality of size groups in which the magnitude relationship is established, the length in the width direction of the stretchable portion of the waste tape in the non-stretched state is the size group having a relatively small size ≤ the relative size. The series of absorbent articles according to any one of claims 1 to 4, wherein the size relationship of the large size group is established. For the waste tape, when the stress immediately after the 50% elongation at break is continued for 20 minutes is σ50 ₂₀ , and the stress immediately after the 50% elongation at break is _σ50 , the stress is σ50. The series of absorbent articles according to any one of claims 1 to 5, wherein the ratio σ50 ₂₀ / σ50 ₀ of ₂₀ and σ50 ₀ is the same among the plurality of size groups for which the magnitude relationship is established. In the waste tape, the stress immediately after the breaking elongation is 100 mm or more and the breaking elongation is 50% stretched for 20 minutes is the stress immediately after the breaking elongation is 50% stretched. % Or more, the series of absorbent articles according to any one of claims 1 to 6. Each of the plurality of size groups includes the plurality of the absorbent articles and a packaging container containing the plurality of absorbent articles therein.
Any one of claims 1 to 7, wherein the absorbent article warps convexly toward the side to which the waste tape is fixed when it is taken out from the inside of the packaging container and placed under non-stress. A series of absorbent articles as described in the section. The absorbent article according to any one of claims 1 to 8, wherein the waste tape is provided so as to be expandable in the vertical direction starting from a fixing portion with the outer surface of the absorbent article at the time of use. series. The disposal tape is in a state of being folded on the outer surface of the absorbent article when not in use, and is for disposal when the disposal tape is unfolded in the vertical direction without expanding and contracting from the folded state. The series of absorbent articles according to claim 9, wherein the total length of the tape in the vertical direction is 40% or less of the total length in the vertical direction under non-stress of the absorbent article. The series of absorbent articles according to claim 9 or 10, wherein the absorber has a groove extending in the vertical direction, and the groove does not disappear even when the absorber saturatedly absorbs a liquid. The series of absorbent articles according to claim 11, wherein the groove is located on a virtual straight line extending in the vertical direction through a fixing portion of the waste tape with the outer surface of the absorbent article. Elongation in a 50% elongation state of the breaking elongation of the longitudinally stretchable portion of the waste tape with respect to the lateral length of the groove in the absorbent article saturated with saline. The series of absorbent articles according to claim 11 or 12, wherein the ratio of the lengths in the directions orthogonal to the direction is 1.5 or less.

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