DE112016005344T5 - Absorbent article - Google Patents

Abstract

An upper layer (2) consists of a stack with a first layer and a second layer. The stack includes a plurality of connecting portions formed by partially connecting the first layer and the second layer, and has a plurality of protrusions projecting toward the body of a carrier, wherein the protrusions are formed such that portions different from the connecting portions of the first Lay out of the second layer facing away. The topsheet (2) has a center portion (S) and a pair of side portions (M) adjacent to the center portion (S). The shape and / or the arrangement pattern of the connecting portions are different between the center area (S) and the side areas (M). The area ratio of the connecting portions between the center area (S) and the side areas (M) is substantially the same. The number of connecting sections per unit area is greater in the lateral areas (M) than in the central area (S).

Description

Technical part

The present invention relates to various absorbent articles such as disposable diapers and sanitary napkins.

State of the art

There is known a technique for an absorbent article in which the skin-facing surface side of the topsheet is formed to have a three-dimensional shape in terms of reduction of contact area and friction between the topsheet and the wearer's skin and improvement of texture and the air permeability when the absorbent article is worn. For example, Patent Document 1 discloses a topsheet 2 of an absorbent article 1 having a large number of protrusions 21 having an elongated shape in the longitudinal direction of the absorbent article 2 at a central longitudinal center portion 2c and a large number of protrusions 22 which have elongated shape in a widthwise direction of the absorbent article at end portions 2a and 2b provided at the front and at the back of the center portion 2c. The projections 21 and 22 in the center portion 2 c and in the end portions 2 a and 2 b are arranged distributed in the longitudinal direction and in the width direction of the absorbent article 1. The topsheet 2 comprises a first nonwoven fabric 23 on which protrusions 21 and 22 are formed, and a second nonwoven fabric 24 which is substantially flat and bonded to the first nonwoven fabric 23 at portions extending from the protrusions 21 and 22 of the first Nonwovens 23 are different. Patent Document 1 teaches that the absorbent article 1 having such a topsheet 2 has excellent absorbency and leakage resistance.

Patent Document 2 discloses a topsheet 2 of an absorbent article 1 in which a large number of protrusions 21 are formed in a longitudinal direction and a width direction of the absorbent article in a central region 2a disposed at the center and extending in the longitudinal direction and a plurality of projection rows R1 to R3 in the width direction are formed in side portions 2b and 2b disposed on the right and left sides of the center portion 2a, each projection row containing a large number of projections 22 aligned in the longitudinal direction. The topsheet 2 comprises a first fibrous web 22 shaped to have protrusions and depressions, and a second nonwoven web 23 that is substantially flat and joined to the first nonwoven web 22 at all or some of the depressions of the first nonwoven web 22 is. Patent Document 2 teaches that the absorbent article 1 having such a topsheet 2 has excellent leak preventability, and that it is possible to effectively prevent both leakage from the sides and leakage from the front and back ends.

quote list

patent literature

• Patent Document 1: JP 2009-136349A
• Patent Document 2: JP 2009-148445A

Brief description of the invention

As disclosed in Patent Documents 1 and 2, in order to improve the softness of the topsheet, which consists of a stack of two nonwoven fabrics bonded together, or effectively to reduce the friction between the top sheet and the wearer's skin, it is the bonding area ratio between the two fiber webs to a low value. However, a reduction in the bond area ratio often results in a reduction in the bond strength between the two fiber webs. A reduction in adhesive strength can cause the fibrous webs to separate and create a gap between the two fibrous webs when the absorbent article is being worn. In particular, the separation and the generation of a gap are more likely to occur in the vicinity of a leg opening portion where the degree of contact with the skin of the wearer is high.

Means of solving the problems

The present invention provides an absorbent article comprising: a topsheet, a backsheet, and an absorbent element disposed between the topsheet and the backsheet, the topsheet having a stacked structure comprising a first layer and a second layer, the stacking structure having a plurality of Having connecting portions formed by partially connecting the first layer and the second layer, and having a plurality of protrusions projecting toward a body of a carrier, wherein the protrusions are formed such that portions of the first layer, which are different from the connecting portions , projecting away from the second layer, the topsheet having a center region disposed at a center in a width direction of the topsheet and extending in its longitudinal direction, and a pair of side regions extending in the longitudinal direction, the side regions adjacent to wed wherein a shape and / or an arrangement pattern of the connecting portions are different between the center area and the side areas, wherein an area ratio of the connecting portions between the center area and the side areas is substantially equal, and wherein the number of connecting sections per unit area in the side areas is larger than in the middle area.

list of figures

• 1 Figure 11 is a plan view of a disposable diaper which is one embodiment of an absorbent article of the present invention in its laid out condition in which elastic members are not contracted and flattened as viewed from a topsheet which is a skin-facing surface of the diaper;
• 2 FIG. 12 is a cross-sectional view in a thickness direction for schematically showing a cross section taken along in FIG 1 illustrated line II-II;
• 3 shows a partial top view of the skin-facing surface of the top layer of FIG 1 illustrated diaper;
• 4 shows an enlarged plan view of a relevant part of 3 ;
• 5 Fig. 12 is a schematic diagram showing an example of a cross-sectional structure of a first fiber or a second fiber used in the topsheet of the absorbent article of the present invention; and
• 6 (a) and 6 (b) 10 are plan views illustrating upper sheets according to other embodiments usable in the absorbent article of the present invention.

Description of embodiments

The present invention relates to improving a topsheet of an absorbent article consisting of a two layered stack structure, and more particularly to an absorbent article having a topsheet with a good texture and in which the two layers are unlikely to separate from each other, and where it is unlikely that a gap will form between the two layers.

Hereinafter, the absorbent article of the present invention will be described with reference to preferred embodiments of the present invention with reference to the drawings. The 1 and 2 show a disposable diaper 1 which is an embodiment of the absorbent article of the invention. The diaper 1 has a front portion 1F to be disposed on a ventral side of a wearer when the diaper is worn, a rear portion 1R to be placed on a back side of the carrier and a crotch section 1M on that between the front section 1F and the rear portion 1R. The diaper 1 has a longitudinal direction X, extending from the front section 1F to the rear section 1R extends across the crotch portion IM and corresponds to the front-to-back direction of the carrier, and a lateral direction Y which extends perpendicular to the longitudinal direction X. The front section 1F , the crotch section IM and the rear section 1R Correspond to areas by dividing the diaper 1 in the longitudinal direction X are obtained in three equal parts. The crotch portion IM has a portion facing the excretion portion which is to be disposed facing the excreting portion of the wearer when the diaper 1 and the portion facing the waste portion is usually at or near the center of the diaper 1 in the longitudinal direction X.

As in the 1 and 2 is shown, the diaper 1 an absorbent element 4 that has an absorbent core 40 has, a liquid-permeable top layer 2 that are on the skin-facing Surface side of the absorbent element 4 and can come into contact with the skin of the wearer when the diaper is worn, and a liquid-impermeable or water-repellent pad 3 on the non-skin facing surface side of the absorbent element 4 is arranged. As in the top view of 1 pictured, has the diaper 1 an elongated hourglass shape in which a center portion in the longitudinal direction X, where the crotch portion IM is provided, is inwardly curved and elongated in one direction, particularly in the longitudinal direction X. The top layer 2 has dimensions that match the dimensions of the absorbent element 4 are substantially the same or slightly larger. The underlay 3 has dimensions that are larger than the dimensions of the absorbent element 4 , In addition, the dimensions of the pad 3 larger than those of the top layer 2 , The underlay 3 extends from the peripheral edge of the absorbent element 4 to the outside and forms an outer shape of the diaper 1 in their designed and uncompressed state, as in 1 is shown. As the pad 3 For example, without limitation, any type of a base usable in such an absorbent article can be used, and it is possible to use a resin layer, a laminate of a resin layer and a nonwoven fabric or the like. The underlay 3 can be permeable to air.

In this specification, the term "skin-facing surface" refers to a surface of an absorbent article or its component (for example, the absorbent element 4 ) intended to face the skin of the wearer when the absorbent article is being worn, or in other words to a surface that is relatively close to the skin of the wearer. The term "non-skin facing surface" refers to a surface of an absorbent article or its component intended to face the opposite side of the wearer's skin when the absorbent article is worn, or in other words a surface that is relatively far removed from the skin of the wearer. The term "when an absorbent article (or diaper) is worn" as used herein means a normal and proper wearing position, or in other words, a state in which the correct wearing position of the absorbent article (or diaper) is maintained, and does not include one Condition in which the absorbent article (or diaper) is out of the correct wearing position.

page documents 5 are on the right and left sides in the longitudinal direction X on the side of the topsheet 2 the diaper 1 intended. Every page situation 5 has an inner edge portion extending in the longitudinal direction X and an outer edge portion disposed on the outer side in the lateral direction Y with respect to the inner edge portion and extending in the longitudinal direction X. In the in 1 When viewed in plan view, the inner edge portion overlaps the absorbent element 4 , and, as in 2 is shown, the outer edge portion in the lateral direction Y extends from a side edge of the absorbent member 4 which extends in the longitudinal direction X, to the outside and is with the pad 3 connected. Between the side position 5 and the pad 3 in each of the right and left leg portions to be arranged around the legs of the wearer is an elastic member 50 fastened in the form of bands in its stretched state so as to extend in the longitudinal direction X. With this configuration, when the diaper 1 is worn as a result of contraction of the elastic elements 50 a pair of leg creases in the leg sections of the diaper 1 educated. In addition, in the inner edge portion of each side layer 5 an elastic element 51 fastened in the form of bands in its stretched state so as to extend in the longitudinal direction X. With this configuration form when the diaper 1 is borne, in that the elastic elements 51 contract at least in the crotch section IM, the side layers 5 each one anti-leakage cuff, because the inner edge portion of the connecting portion between the side layer and the base 3 upright to the skin of the wearer. The anti-drain cuffs can prevent a waste fluid, such as urine, from flowing outward in the lateral direction Y, or in other words prevent so-called "side leakage" from occurring. The top layer 2 , the underlay 3 , the absorbent element 4 , the side layers 5 and the elastic elements 50 and 51 are interconnected by a known bonding agent such as a hot melt adhesive or the like.

The diaper 1 is a so-called "open" disposable diaper. As in 1 are shown are a pair of straps 6 and 6 provided on two side edge portions extending in the longitudinal direction X of the rear portion 1R the diaper 1 extend. A fastener portion (not shown), which is a male member of a mechanical hook and loop fastener, is on each fastener tape 6 attached. Also in the non-skin facing surface of the front section 1F the diaper 1 is a fortified area 7 formed, which is a female element of the mechanical Velcro. The fortified area 7 is achieved by connecting and fixing the female element of the mechanical hook and loop fastener with a non-skin by a known bonding agent, such as an adhesive or heat seal facing surface of the pad 3 formed, which is the non-skin facing surface of the front section 1F forms, and is configured, the fastening portions of the fastening straps 6 removably record.

As in the 1 When viewed in plan, the absorbent member 4 has a shape which is elongated in the longitudinal direction X and extends from the front portion 1F to the rear section 1R extends. The absorbent element 4 comprising: a liquid absorbent absorbent core 40 containing an absorbent material and a core wrap layer 45 which is a skin-facing surface 40a and a non-skin facing surface 40b of the absorbent core 40 covered. The absorbent core 40 and the core wrap layer 45 are connected by a known bonding agent, such as a hot melt adhesive. The absorbent element 4 (the absorbent core 40 ) is an imaginary line (not shown) that the diaper 1 divides Y in half in the lateral direction and extends in the longitudinal direction X, symmetrically.

The absorbent core 40 may have a single-layered structure. Alternatively, the absorbent core 40 have a multilayer structure. As in the top view of 1 is shown has the absorbent core 40 an hourglass shape in which a central portion in the longitudinal direction, in other words, the longitudinal direction X, inwardly curved. The absorbent core 40 is formed by stacking fibers of a core-forming material containing an absorbent material. As the absorbent material, an absorbent material conventionally used to form such an absorbent core can be used without any particular limitation. For example, it is possible to use wood pulp, hydrophilic fibers such as synthetic fibers treated with a hydrophilizing agent, and absorbent polymer particles. That is, the absorbent core 40 may consist of a fiber stack of hydrophilic fibers or of absorbent polymer particles carried on the fiber stack.

As a core envelope situation 45 a water-permeable sheet material may be used. As a core envelope situation 45 For example, paper, non-woven fabric and the like can be used. In the diaper 1 According to the present embodiment, the core sheath layer is 45 a single continuous core cladding layer 45 which has a width which is at least twice and at most three times as large as the length of the absorbent core 40 in the lateral direction Y. As in 2 is shown covering the single nuclear envelope layer 45 the entire skin-facing surface 40a of the absorbent core 40 and extends from two side edges of the absorbent core 40 which extend in the longitudinal direction X, in the lateral direction Y outward, and extension portions are of the absorbent core 40 bent down to the entire non-skin-facing surface 40b of the absorbent core 40 cover. Of course, the configuration is the core wrap layer 45 not limited to this. For example, the core wrap layer 45 from two separate layers, ie, from a skin-side core wrap layer that faces the skin 40a of the absorbent core 40 covering, and a non-skin-side Kernumhüllungslage consist, the non-skin-facing surface 40b of the absorbent core 40 covers.

As in 3 is shown, the top layer 2 that are on the skin-facing surface 40a of the absorbent element 4 is arranged, a center region S and a pair of side regions M and M, which are arranged on both sides of the central region S. The center area S is at the center in the width direction (ie, in the lateral direction Y) of the diaper 1 arranged and extends in the longitudinal direction (ie in the longitudinal direction X) of the diaper 1 , The pair of side portions M and M are disposed adjacent to the center portion S and extend in the longitudinal direction (ie, in the longitudinal direction X) of the diaper 1 , The center area S and the side areas M are preferably formed at least in the crotch portion IM, more preferably formed so as to extend from the crotch portion IM to the front portion 1F and / or to the rear section 1R more preferably, are formed so that they extend over the entire length of the absorbent element 4 extend, and are more preferably over the full length of the diaper 1 educated.

The center area S and the side areas M can be distinguished from each other by the shape and / or the arrangement pattern of the connection portions, as will be described later. The width of the center region S is preferably 30% or more, and more preferably 40%. or more of the width of the top layer 2 , In addition, the width of the center region S is preferably 70% or less, and more preferably 60% or less of the width of the topsheet 2 , Moreover, the width of the center region S is preferably 30% or more and 70% or less, and more preferably 40% or more and 60% or less of the width of the topsheet 2 , The width of each side region M is preferably 15% or more, and more preferably 20% or more, of the width of the topsheet 2 , In addition, the width of each side region M is preferably 35% or less, and more preferably 30% or less of the width of the topsheet 2 , Further, the width of each side region M is preferably 15% or more and 35% or less, and more preferably 20% or more and 30% or less of the width of the topsheet 2 , The total width of the side regions M is preferably 30% or more, and more preferably 40% or more, of the width of the topsheet 2 , In addition, the total width of the side portions M is preferably 70% or less, and more preferably 60% or less of the width of the topsheet 2 , Further, the total width of the side portions M is preferably 30% or more and 70% or less, and more preferably 40% or more and 60% or less of the width of the topsheet 2 ,

The top layer 2 consists of a stack with a first layer and a second layer. The first layer is placed on the body side of the wearer when the diaper 1 will be carried. The second layer is on the side of the absorbent element 4 arranged. As in 4 which is an enlarged view of a relevant part of 3 shows, shows the top layer 2 in the center region S and in each side region M, a plurality of connecting portions M11, M12, S11 and S12 formed by partially bonding the stack of the first layer and the second layer by embossing or ultrasonic machining, and a plurality of projections M21, S21 and S22, the projecting toward the skin of the wearer, wherein the protrusions are formed such that the portions of the first layer, which are different from the connecting portions M11, M12, S11 and S12, project away from the second layer. The top layer 2 is also configured such that in the center region S and in each side region M, its second layer side surface is substantially flat, and corrugations of large height are formed on its first layer side surface.

The middle area S of the upper layer 2 provided connecting portions have a central first connecting portion S11 and a central second connecting portion S12. The central first connecting portion S11 and the central second connecting portion S12 have rectangular shapes with sides extending in the longitudinal direction X and sides extending in the lateral direction Y, the shape of the central first connecting portion S11 being different in shape from that of FIG central second connecting portion S12. The central first connecting portions S11 are arranged to form first connecting portion rows S31, the central first connecting portions S11 being arranged at a predetermined interval therebetween in the longitudinal direction X. The central second connecting portions S12 are also arranged to form a second connecting portion row S32 and a third connecting portion row S33, the central second connecting portions S12 being arranged at a predetermined interval therebetween in the longitudinal direction X. The second connecting portion row S32 and the third connecting portion row S33 are alternately arranged adjacent to each other between the first connecting portion rows S31. A distance of the center second connecting portions S12 included in the second connecting portion row S32 in the longitudinal direction X is the same as a distance of the center second connecting portions S12 included in the third connecting portion row S33 in the longitudinal direction X. The center second connecting portions S12 included in the second connecting portion row S32 are offset by half a distance from the central second connecting portions S12 included in the third connecting portion row S33. As a result, as the central first connecting portions S11 and the central second connecting portions S12 are arranged as described above, the projections included in the center region S have a central first projection S21 and a central second projection S22. The central first protrusion S21 has a substantially elliptical shape when viewed in plan view, in which the length in the lateral direction Y is longer than the length in the longitudinal direction X. The central second protrusion S22 has a substantially circular shape when viewed in plan which is substantially equal to the length in the lateral direction Y of the length in the longitudinal direction X. If the top layer 2 In the longitudinal direction X, a first protrusion row S34 in which the central first protrusions S21 and the central second protrusions S22 are alternately arranged in the longitudinal direction X is formed in the center region S. The first projection row S34 is disposed at the same position as the second connection portion row S32 described above. Besides, if the top layer 2 is viewed in the longitudinal direction X, a second projection row S35, in which only the central second projections S22 are arranged in the longitudinal direction X, formed in the central region S. The second projection row S35 is disposed at the same position as the third connection portion row S33 described above. The term "substantially elliptical shape" refers to a concept that includes a fully elliptical shape and an elongated circular shape. The term "substantially circular, wherein the length in the lateral direction Y is substantially equal to the length in the longitudinal direction X" includes both a perfect circular shape and an elliptical shape in which the length in the longitudinal direction X is within a range of ± 10 % of the length lies in the lateral direction Y.

The top layer in each side area M 2 contained connecting portions have a lateral first connecting portion M11 and a lateral second connecting portion M12. The lateral first connecting portion M11 and the lateral second connecting portion M12 have rectangular shapes with sides extending in the longitudinal direction X and sides extending in the lateral direction Y, and the shape of the lateral first connecting portion M11 is different from that shown in FIG Shape of the lateral second connecting portion M12. The lateral first connecting portions M11 are arranged to form a fourth connecting portion row M31, where the lateral first connecting portions M11 are arranged at a predetermined interval therebetween in the longitudinal direction X. The lateral second connecting portions M12 are also arranged to form fifth connecting portion rows M32 where the lateral second connecting portions M12 are arranged at a predetermined interval therebetween in the longitudinal direction X. The fourth connecting portion row M31 and the fifth connecting portion row M32 are alternately arranged in the transverse direction Y. A distance of the side connecting portions M11 included in the fourth connecting portion row M31 is the same as a distance of the side second connecting portions M12 included in the fifth connecting portion row M32. The lateral first connecting portions M11 included in the fourth connecting portion row M31 are offset by half a distance from the side second connecting portions M12 included in the fifth connecting portion row M32. As a result, the protrusions contained in the side regions M have only one protrusion type, namely side protrusions M21. Each side projection M21 is formed within a region surrounded by four connecting portions: two lateral first connecting portions M11 adjacent in the longitudinal direction X and two lateral second connecting portions M12 adjacent in the lateral direction Y. The side protrusions M21 have a substantially circular shape when viewed in plan, and the length in the lateral direction Y is substantially equal to the length in the longitudinal direction. If the top layer 2 in the lateral direction Y, a third protrusion row M33 and a fourth protrusion row M34 in which the side protrusions M21 are respectively arranged in the lateral direction Y are formed in the side region M. A distance of the side protrusions M21 included in the third protrusion row M33 is the same as a distance of the side protrusions M21 included in the fourth protrusion row M34. The side protrusions M21 included in the third protrusion row M33 are offset by half a pitch from the side protrusions M21 included in the fourth protrusion row M34.

In the center region S, the height of the central first protrusions S21 may be equal to or different from the height of the central second protrusions S22. From the viewpoint of improving the external appearance and the tactile impression, the height of the central first protrusions S21 is preferably different from the height of the central second protrusions S22. In the case where the protrusions S21 and S22 have different heights, the height of the central first protrusions S21 may be higher than the height of the central second protrusions S22. Alternatively, the height of the central second protrusions S22 may be higher than the height of the central first protrusions S21. By configuring two types of projections to have different heights, portions providing different tactile impressions are alternately provided, which portions provide better texture when the portions are touched with a finger compared with the case where only one projection type with the same height is provided. In addition, leakage can be reduced with this configuration as urine excreted along the surface of the topsheet 2 flows, the resistance to urine, which moves from low protrusions to high protrusions, is increased, which makes urine flow difficult. With respect to the side protrusions M21 formed in the side portions M, each side protrusion M21 may have the same height as the central first protrusions S21 and the central second protrusions S22, or may have a height different from those of the central first protrusions S21 and the central second Projections S22 is different. For example, the height of the side protrusions M21 may be the same as that of either the central first protrusions S21 or the central second protrusions S22, may be the same as that of the central first protrusions S21 and the central second protrusions S22, or may be from those of the central first protrusions S21 and the central second protrusions S22 be different. In each side area M it is likely that the top layer 2 due to the movement of the leg of the wearer separates. For this reason, the side protrusions M21 provided in each side region M exist from the viewpoint of suppression of the separation of the topsheet 2 preferably of a projection type. In addition, the height of the side protrusions M21 in the side regions M is preferably less than or equal to the heights of the central first protrusions S21 and the central second protrusions S22 in the center region S, which must have a better texture.

In the top position 2 For example, the shape and / or the arrangement pattern of the connecting portions S11, S12, M11 and M12 are different between the center region S and the side regions M. In particular, the shape and / or the arrangement pattern of the connecting portions S11, S12, M11 and M12 is between the Center area S and each side area M different. More specifically, the center area S and each side area M are formed to have any of the following configurations: (i) the arrangement pattern of the connection portions is the same, but the connection portions have different shapes; (ii) the connection portions have the same shape, but the arrangement pattern of the connection portions is different; and (iii) the arrangement pattern of the connecting portions is different and the connecting portions have different shapes. By configuring the center region S and each side region M differently, as described above, the contact between the topsheet 2 and the skin of the wearer can be appropriately controlled, and the outward appearance can be changed significantly. Preferably, the shape and the arrangement pattern of the connecting portions are different. In the in the 3 and 4 In the illustrated embodiment, the arrangement pattern of the connecting portions S11, S12, M11 and M12 in the center region S and in the side regions M is different, and the shape of the connecting portions S11, S12, M11 and M12 is also different.

In the top position 2 For example, except that the shape and / or the arrangement pattern of the connection portions between the center region S and each side region M are different, the area ratio of the connection portions between the center region S and each side region M is substantially equal. The area ratio (%) of the connection portions refers to a value obtained by dividing the total area of the connection portions included in a given area by the predetermined area in each of the center area S and the side areas M and multiplying by 100. The expression "the area ratio of the connection portions is substantially the same" includes both the case where the area ratio of the connection portions between the center area S and each side area M is equal, and the case where the area ratio in the side area M is within a range of ± 15% of the area ratio in the center area S is. That is, when the area ratio in the side area M is 0.85A% or more and 1.15% or less, and the area ratio in the center area S is represented by A%, it can be said that the area ratio between the center area S and each side area M is essentially the same.

Configuring the center region S and the side regions M to have substantially the same area ratio of the connecting portions offers the advantage that it is unlikely that the first layer and the second layer that the top layer 2 form, separate from each other when the diaper 1 will be carried. There is also another advantage in that little variation in pressure occurs when a roll is rotated about the topsheet 2 by bonding the first layer and the second layer together, and the linear pressure in the widthwise direction of the roll between the center region S and the side regions M can be made to be substantially the same, resulting in a substantial improvement in workability. For example, holes are unlikely to form together during the process of adhering the first layer and the second layer. It is also possible to suppress the wear and tear of the roller used to bond the first layer and the second layer together.

In addition, in the configuration in which the area ratio of the connecting portions between the center region S and each side region M is substantially the same, it is possible to obtain an advantage important to the absorbent article in that the excreted urine over the entire Surface of the absorbent element can be uniformly absorbed. In the present embodiment, a plurality of connection portions M11, M12, S11 and S12 are formed by partially bonding the stack of the first layer and the second layer by embossing or ultrasonic processing. In the connecting portions, the fibers of the non-woven fabrics constituting the first layer and the second layer are formed into a film to prevent the occurrence of separation and the formation of a gap during use, so that urine is not absorbed by the connecting portions. In a normal state of use urine is discharged at a rate of 3 cm ³ / s or more and 20 cm ³ / s or less in the center region S. Therefore, not all the urine can be absorbed by the center area S. It is therefore important that urine is immediately absorbed not only by the center area S but also by the side areas M. When the area ratio of the connecting portions provided in the central area S and the area ratio of the connecting portions provided in the side portions M are different, unevenness in the absorption rate of the discharged urine occurs in these areas, making it difficult to uniformly and efficiently make the entire surface of the absorbent member and causes leakage to occur. In the present invention, since the area ratio of the connecting portions between these areas is the same, it is possible to prevent the occurrence of such a disadvantage. In addition, the entire surface of the absorbent element is used evenly and efficiently, allowing free moisture within the diaper (Moisture that is not retained by the absorbent polymer particles) is reduced and it is possible to suppress moisture from returning to the skin when the diaper is worn.

Under the condition that the area ratio of the connecting portions between the center area S and each side area M is substantially equal, the area ratio of the connecting portions in the center area S and in each side area M is preferably 10% or more, and more preferably 15% or more. In addition, the area ratio of the connecting portions is preferably 40% or less, and more preferably 35% or less. The area ratio of the connecting portions is preferably 10% or more and 40% or less, and more preferably 15% or more and 35% or less. By adjusting the area ratio within the above-described range, the adhesive strength between the two layers can be sufficiently increased without the texture and the absorbency of the topsheet 2 to diminish.

1. (a) Der Freiheitsgrad der Faserbestandteile der Oberlage 2 oder mit anderen Worten die Beweglichkeit der Fasern ist im Mittenbereich S höher als im Seitenbereich M. Als ein Ergebnis wird die Weichheit des Mittenbereichs S verbessert.
2. (b) Der Höhenunterschied zwischen Vorsprüngen und Vertiefungen im Seitenbereich M ist relativ gering, und der Freiheitsgrad der Fasern ist vermindert. Infolgedessen ist es unwahrscheinlich, dass ein durch eine Bewegung der Beine des Trägers verursachtes Reißen der Oberlage 2 in den Seitenbereichen auftritt. Auch stellt das Einstellen der Anzahl von Verbindungsabschnitten in jedem Seitenbereich M derart, dass sie größer ist als im Mittenbereich S, einen Vorteil dahingehend bereit, dass Vibrationen von beiden Seitenabschnitten der Rolle während der Produktion reduziert werden, wodurch die Verarbeitbarkeit wesentlich verbessert wird. Beispielsweise ist es unwahrscheinlich, dass sich während des Prozesses zum Verkleben der ersten Lage und der zweiten Lage miteinander Löcher bilden. Es ist auch möglich, Verschleiß und ein Reißen der Rolle zu unterdrücken, die verwendet wird, um die erste Lage und die zweite Lage miteinander zu verkleben.

In the top position 2 For example, except that the shape and / or arrangement pattern of the connecting portions between the center region S and each side region M is different, the number of connecting portions per unit area in each side region M is greater than the center region S. With the configuration in which the number of connecting portions per unit area in each side area M is larger than in the center area S, the following advantages (a) and (b) can be obtained.

1. (a) The degree of freedom of the fiber components of the topsheet 2 or in other words, the mobility of the fibers is higher in the center area S than in the side area M. As a result, the softness of the center area S is improved.
2. (b) The height difference between protrusions and recesses in the side region M is relatively small, and the degree of freedom of the fibers is reduced. As a result, it is unlikely that tearing of the topsheet caused by movement of the wearer's legs 2 occurs in the page areas. Also, setting the number of joint portions in each side region M to be larger than the center region S provides an advantage in that vibrations of both side portions of the roll during production are reduced, thereby greatly improving workability. For example, holes are unlikely to form together during the process of adhering the first layer and the second layer. It is also possible to suppress wear and tear of the roller used to bond the first layer and the second layer together.

The top layer 2 preferably satisfies a relationship C> D, where C represents the area of the connecting portions S11 and S12 having the largest area among the connecting portions formed in the central area S, and D represents the area of the connecting portions M11 and M12 having the largest area among those in the FIG Side region M have formed connecting portions. With the configuration in which the area of the connecting portions formed in the center area S is larger than the area of the connecting portions formed in the side areas M, it can be easily made that the number of connecting portions formed in the center area S is smaller than the number of the side areas M trained connecting sections. Therefore, it is unlikely that irregular wrinkles will occur in the middle region S when the diaper 1 will be carried. The appearance of irregular wrinkles makes it easier for urine and excrement to flow along the wrinkles, which can lead to leakage. To avoid this, the leakage of liquid can be suppressed by suppressing the occurrence of wrinkles.

From the viewpoint of further suppressing the occurrence of wrinkles, the area D is preferably 80% or less and more preferably 70% or less of the area C. In addition, the area D is preferably 20% or more and more preferably 30% or more of the area C. Area D is preferably 20% or more and 80% or less, and more preferably 30% or more and 70% or less of area C.

The proportion of the total area of the connecting portions of the area C on the total area of the connecting portions in the center area S is preferably 20% or more, and more preferably 30% or more. The upper limit of the content is preferably 80%, and more preferably 70%. On the other hand, the proportion of the total area of the connecting portions of the area D to the total area of the connecting portions in each side area M is preferably 80% or more, and more preferably 90% or more. The upper limit of the content is preferably 100%.

The top layer 2 preferably satisfies a relationship E> F, where E represents the length of the connecting portions S11 and S12 in the longitudinal direction X, which is the longest length among those in the center region S and F represents the length of the connecting portions M11 and M12 in the longitudinal direction having the longest length among the connecting portions formed in each side portion M. With this configuration occur when the diaper 1 is worn, probably wrinkles in an ordered manner in the center region S, wherein the wrinkles are caused by the central region S receives a force that is exerted inwardly in the lateral direction of the legs of the wearer. In other words, irregular wrinkles are unlikely to occur in the center region S, thereby suppressing liquid leakage.

In view of causing wrinkles to occur in a more orderly manner, the length F is preferably 80% or less, and more preferably 70% or less of the length E. Moreover, the length F is preferably 20% or more, and more preferably 30% or more of length E. The length F is preferably 20% or more and 80% or less, and more preferably 30% or more and 70% or less of the length E.

The proportion of the total area of the connecting portions of the length E to the total area of the connecting portions in the center area S is preferably 20% or more, and more preferably 30% or more. The upper limit of the content is preferably 100%, and more preferably 80%. On the other hand, the proportion of the total area of the connecting portions of the length F to the total area of the connecting portions in each side area M is preferably 60% or more, and preferably 80% or more. The upper limit of the content is preferably 100%, and more preferably 90%.

In the top position 2 it is preferred that each side region M of the top layer 2 has a higher shear stress than the center region S of the top layer 2 , The shear stress is an indication of the softness of the projections formed in the center region S and in each of the side regions M. The smaller the value of the shear stress, the softer the protrusions. Therefore, the fact that the shear stress in each side region M is higher than that in the center region S indicates that the protrusions in the center region S are softer than those in the side regions. With this configuration, the protrusions in the center region S, which is the dominant soft region, can be softened, thereby making it possible to make a conveniently fitting diaper 1 provide.

The shear stress can be measured using the following method.

A test specimen is prepared by cutting a cover sheet serving as a measurement object into a rectangular shape viewed in plan view with a length in the longitudinal direction of 50 mm and a lateral length of 30 mm. Next, an adhesive tape (product name: No. 500, available from Nitto Denko Corporation) having the same shape and dimensions as that of the test sample is applied to a PET film (product name: Star OHP film, available from Star Corporation), to make a stack (A). Then, the side of the test sample on which no protrusions are formed is placed on the adhesive tape side of the stack (A) to obtain a stack (B). A roll weighing 1 kg is moved back and forth on the stack (B) five times to press-bond the adhesive tape and the test sample contained in the stack (B). A male element (product name: 1600 PPI, available from 3M Company) of a mechanical fastener having a shape and dimensions sufficient to cover the entire test specimen is prepared as an attachment piece, and the attachment piece becomes with the protrusion side in the stack (B) is connected via the hook member on the attachment piece under a load of 1.5 kPa under pressure to obtain a measurement sample. The obtained measurement sample is placed between fixtures (with a fixture jig spacing of 150 mm) of a tensile testing machine (Autograph AG-X, available from Shimadzu Corporation), and the measurement sample is subjected to a 180 degree peeling process. The 180 degree peeling process is carried out by pulling the stack (B) at one end in the longitudinal direction of the measurement sample and the attachment piece at the other end respectively held by the tensioners of the tensile testing machine in 180 degrees opposite directions. The pulling speed is set to 300 mm / min, and the maximum pulling load at that time is recorded. As a measuring point, a total of six locations (the front and the back in the longitudinal direction of the diaper and the left side, the right side and the middle in the transverse direction of the diaper) were selected for each diaper which served as the test sample. The measurement is carried out for a total of three diapers, and the average value of the measurements is defined as the shearing stress (unit: N) of the topsheet, which is a measurement target.

The shear stress of the Center area S assumes a value of preferably 25 N or more, and more preferably 30 N or more. In addition, the shear stress of the center region S takes a value of preferably 34 N or less, and more preferably 33 N or less. The shear stress of the center region S assumes a value of preferably 25 N or more and 34 N or less, and more preferably 30 N or more and 33 N or less. On the other hand, the shear stress of each side region M assumes a value of preferably 33 N or more, and more preferably 35 N or more on the condition that the shear stress of each side region M is higher than the shear stress of the center region S. In addition, the shear stress of each side region M takes a value of preferably 45N or less, and more preferably 40N or less. The shear stress of each side region M assumes a value of preferably 33 N or more and 45 N or less, and more preferably 35 N or more and 40 N or less.

For example, in order to configure the center area S and each side area M to have different shear stress values, the pattern of the connection areas between the center area S and each side area M or the bonding strength of joint areas may be changed. For example, it is assumed that the protrusions S21 and S22 exist in the center region S and the protrusions M21 are present in each side region M (see FIG. 4 ). Here, it is important that a relationship S _max > M _{max is} satisfied, where S _{max is} the area of the protrusion (protrusions S21 in FIG 4 ), which has the largest area under the projections in the center area S, and M _{max represents} the area of the projection (projections M21) having the largest area among the projections in the side area M. By satisfying the relationship, the degree of freedom (mobility) of the fibers in the center region S becomes relatively higher than that of the fibers in the side regions M, and the softness is more increased.

A top layer 2 , which is configured as described above, for example, according to the in the JP 2015-112343 A disclosed methods for producing a composite film. More specifically, for example, a strip-shaped first layer is fed between a first roller and a second roller whose peripheral surfaces are shaped to be engageable with each other, wherein the first layer is deformed to have projections and recesses, and then the first layer is moved from the engaging portion along the peripheral surface portion of the first roller and then a second layer is fed, so that the second layer is disposed on the first layer. The two layers are pressed together under heat between the protrusions on the first roller and a heating roller to partially connect the layers. At this time, the shape of the protrusions and the recesses of the first roller and the second roller and the pattern of the connecting portions formed by the first roller and the heating roller are varied between the center portion and the side portions of the first layer. At the time when the first sheet is deformed to receive protrusions and depressions by inserting the first sheet into the engaging portion between the first roll and the second roll, the first sheet is preferably drawn toward the inside of the rolls in order to facilitate the deformation of the first layer for the production of protrusions and depressions.

The first layer and the second layer, the top layer 2 form, are made of sheet materials. As sheet materials, for example, fiber layers such as nonwoven fabrics, woven and knitted fabrics, films and the like can be used. With regard to texture and the like, it is preferred to use fiber layers. In particular, it is preferable to use nonwoven fabrics. The sheet material forming the first layer and the sheet material forming the second layer may be of the same type or may be of different types. However, in view of achieving a strong seal strength, it is preferable that the sheet material constituting the first sheet and the sheet material constituting the second sheet are of the same type.

In the case where a nonwoven fabric is used as the sheet material for the first layer and the second layer, examples of the nonwoven fabric include an air-permeable nonwoven fabric, a spunbond nonwoven fabric, a spunlace nonwoven fabric, a meltblown nonwoven fabric, a resin bonded nonwoven fabric and a needled fiber fleece. It is also possible to use a stack obtained by combining two or more of the nonwoven fabrics listed above or a stack obtained by combining a nonwoven fabric listed above with a film and the like. Among the nonwoven fabrics listed above, an air-permeable nonwoven fabric or spunbond nonwoven fabric is preferably used. In particular, the first ply, which is the ply to be placed on the side facing the wearer's skin, is the diaper 1 is worn, preferably made of an air-permeable nonwoven fabric.

The nonwoven fabrics used as the sheet materials for the first layer and the second layer independently have a basis weight of preferably 10 g / m ² or more, and more preferably 15 g / m ² or more, and preferably 40 g / m ² on or less and more preferably 35 g / m or less. The nonwoven fabrics have a basis weight of 10 g / m or more and 40 g / m ² or less, and more preferably 15 g / m ² or more and 35 g / m ² or less.

As the fibers constituting such a nonwoven fabric, fibers made of any type of thermoplastic resin may be used. Examples of the thermoplastic resin are polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate, polyamides such as nylon 6 and nylon 66 , Poly (acrylic acid), polymethacrylic acid alkyl ester, poly (vinyl chloride) and polyvinylidene chloride. These resins may be used alone or as a mixture containing a combination of two or more resin types. These resins may also be used in the form of composite fibers such as core-in-sheath composite fibers or side-by-side composite fibers.

In particular, the first ply, which is the ply to be placed on the side facing the wearer's skin, contains the diaper 1 is worn, preferably several fiber types. In particular, when the first ply has a two-ply structure consisting of an upper ply and a lower ply, it is preferred that either the upper ply or the lower ply contain multiple fiber types. This configuration provides a high degree of damping feeling generated by the projections and improves the softness of the projections. In addition, the standing ability of the projections and the collapse resistance of the projections are improved upon application of a load.

The plurality of fiber types preferably include at least two fiber types of a first fiber and a second fiber. The first fiber and the second fiber preferably contain a refractory component and a low-melting component that has a lower melting point than the refractory component. In this case, the high-melting component of the first fiber and the high-melting component of the second fiber may be of the same type or different type. Also, the low-melting component of the first fiber and the low-melting component of the second fiber may be of the same type or of different types. The first fiber and the second fiber are preferably distinguished from each other by changing the diameter ratio. In the present specification, the term "diameter ratio" refers to the ratio of the diameter (μm) of the refractory component to the diameter of the low-melting component in each of the first fiber and the second fiber. With respect to the diameter of the refractory component and the diameter of the low-melting component, for example, in the case where the first and second fibers are core-in-sheath composite fibers, the sheath resin is made of a low-melting component and its core resin is of a refractory component exists, set D1, as in 5 1, the diameter of the low-melting component C1 and D2 is the diameter of the high-melting component C2. Then, a diameter ratio AX between the high-melting component C2 and the low-melting component C1 in the Xth fiber can be calculated from the following equation. The term "heat-fusible fibers of the same type" as used herein refers to fibers made of the same resin and having the same structure. For example, when there are two core-in-shell composite fibers composed of a high-melting component and a low-melting component, and the high-melting component and the low-melting component of the two composite fibers are made of the same resin and have the same core / sheath diameter ratio , it can be said that the two composite fibers are heat-fusible fibers of the same type. On the other hand, even if the high-melting component and the low-melting component are made of the same resin, if the diameter ratio is different, the two composite fibers are heat-fusible fibers of various types. The term "containing multiple fiber types" means containing heat-fusible fibers of various types. $$\begin{array}{l}\text{Diameter ratio AX of the Xth fiber}=\text{Diameter D}1\left(\mathrm{\mu }\text{m}\right)\text{of the}\\ \text{low melting component of the Xth fiber}÷\text{Diameter D}1\left(\mathrm{\mu }\text{m}\right)\text{of the}\\ \text{refractory component of the Xth fiber}\end{array}$$

In the present invention, as described above, it is preferable that a diameter ratio A1 of the first fiber and a diameter ratio A2 of the second fiber are different. The value A2 / A1, which is the ratio of A2 to A1, is preferably less than 1, and more preferably 0.99 or less, and more preferably 0.91 or less. In addition, the value of A2 / A1 is preferably 0.5 or more, more preferably 0.6 or more, and even more preferably 0.7 or more. By setting the ratio between A1 and A2 as described above, the damping feeling generated by the projections is further enhanced, and the softness of the projections is further improved. In addition, the standability of the projections and the collapse resistance of the projections under load are further improved. For example, the value of A2 / A1 is preferably 0.5 or more and less than 1, more preferably 0.6 or more and 0.99 or less, and even more preferably 0.7 or more and 0.91 or less.

The relationship between the diameter ratio A1 of the first fiber and the diameter ratio A2 of the second fiber is as described above. The diameter ratio A1 of the first fiber assumes a value of preferably 1.1 or more, more preferably 1.2 or more and even more preferably 1.3 or more. In addition, the diameter ratio A1 of the first fiber assumes a value of preferably 2.0 or less, more preferably 1.9 or less, and even more preferably 1.8 or less. To be specific, the diameter ratio A1 of the first fiber takes a value of preferably 1.1 or more and 2.0 or less, more preferably 1.2 or more and 1.9 or less and even more preferably 1.3 or more and 1 , 8 or less.

On the other hand, the diameter ratio A2 of the second fiber assumes a value of preferably 1.1 or more, more preferably 1.2 or more, and even more preferably 1.3 or more on the condition that the value of the diameter ratio A2 of the second fiber is smaller than that the diameter ratio A1. In addition, the diameter ratio A2 of the second fiber assumes a value of preferably 2.0 or less, more preferably 1.9 or less, and even more preferably 1.8 or less. To be specific, the diameter ratio A2 of the second fiber takes a value of preferably 1.1 or more and 2.0 or less, more preferably 1.2 or more and 1.9 or less and even more preferably 1.3 or more and 1 , 8 or less.

The 6 (a) and 6 (b) show top layers 2 according to other embodiments. In a top position 2 according to a in 6 (a) In the illustrated embodiment, the connecting portions included in the central region S have central first connecting portions S11 and central second connecting portions S12 having different shapes from each other. The central first connecting portions S11 are arranged to form first connecting portion rows S31 in which the central first connecting portions S11 are arranged at a predetermined interval therebetween in the longitudinal direction X. Similarly, the central second connecting portions S12 are also arranged to form second connecting portion rows S32 in which the central second connecting portions S12 are arranged at a predetermined interval therebetween in the longitudinal direction X. Two first connecting section rows S31 and one second connecting section row S32 are combined as one group, and the group is repeatedly arranged in the lateral direction Y.

On the other hand, the connection portions included in each side area M include only one connection portion type, namely, the side first connection portions M11. The side first connecting portions M11 are arranged to form fourth connecting portion rows M31 in which the side first connecting portions M11 are arranged at a predetermined interval therebetween in the longitudinal direction X. In addition, the side first connecting portions M11 are arranged to form fifth connecting portion rows M32 in which the side first connecting portions M11 are arranged at a predetermined interval therebetween in the longitudinal direction X. The distance of the connecting sections included in the fourth connecting section rows M31 11 in the longitudinal direction X is the distance of the connecting portions included in the fifth connecting portion row M32 11 different in the longitudinal direction X. The distance of the connection portions included in the fifth connection portion row M32 11 is larger than the distance of the connection portions 11 included in the fourth connection section rows M31.

In a top position 2 according to a in 6 (b) As shown, the connecting portions included in the center portion S have central first connecting portions S11 and central second connecting portions S12 having different shapes from each other. The central first connecting portions S11 are arranged to form first connecting portion rows S31 in which the central first connecting portions S11 are arranged at a predetermined interval therebetween in the longitudinal direction X. In addition, the central first connecting portions S11 are arranged to form second connecting portion rows S32 in which the central first connecting portions S11 are arranged at a predetermined interval therebetween in the longitudinal direction X. The distance of the central first connecting portions S11 included in the first connecting portion row S31 in the longitudinal direction X is the same as the distance of the central first connecting portions S11 included in the second connecting portion row S32 in the longitudinal direction X. The central first connecting portions S11 included in the first connecting portion row S31 are offset by half a distance from the center first connecting portions S11 included in the second connecting portion row S32. On the other hand, the central second connecting portions S12 are arranged to form third connecting portion rows S33 in which the central second connecting portions S12 are arranged at a predetermined interval therebetween in the longitudinal direction X. In the center area S, a first connection portion row S31, a third connection portion row S33, a first connection portion row S31, a third one Connecting portion row S33, a second connecting portion row S32 and a third connecting portion row S33 arranged in this order in the transverse direction Y and combined as a group, and the group is repeatedly arranged in the transverse direction Y.

On the other hand, the connection portions included in the side area M include only one connection portion type, namely, the side first connection portions M11. The side first connecting portions M11 are arranged to form fourth connecting portion rows M31 in which the side first connecting portions M11 are arranged at a predetermined interval therebetween in the longitudinal direction X. In addition, the side first connecting portions M11 are arranged to form fifth connecting portion rows M32 in which the side first connecting portions M11 are arranged at a predetermined interval therebetween in the longitudinal direction X, thereby forming fifth connecting portion rows M32. The distance of the connecting portions 11 included in the fourth connecting portion rows M31 in the longitudinal direction X is the same as the pitch of the connecting portions included in the fifth connecting portion rows M32 11 in the longitudinal direction X. The connecting sections included in the fourth connecting section rows M31 11 are at half a distance from the connecting portions included in the fifth connecting section rows M32 11 added.

In the case of the Oberlagen 2 according to the in the 1 and 2 As illustrated above, with reference to FIGS 6 (a) and 6 (b) It is preferable that the area ratio of the connecting portions between the center area S and each side area M be substantially equal, and it is preferable that the number of connecting portions per unit area in each side area M is larger than in the center area S. With the above described Configuration have the upper layers 2 a good texture, and it is unlikely that the two layers separate and a gap between the two layers occurs.

So far, the present invention has been described in terms of preferred embodiments of the present invention. However, the present invention is not limited to the embodiments set forth above. For example, in the above-described embodiments, an example has been described in which the absorbent article of the present invention is applied to a disposable disposable diaper. However, the present invention is also applicable to other disposable diapers, such as a disposable diaper for dressing. In addition, the present invention is also applicable to absorbent articles other than disposable diapers, such as a sanitary napkin and an adult incontinence pad.

• <1> Ein absorbierender Artikel, mit: einer Oberlage; einer Unterlage und einem zwischen der Oberlage und der Unterlage angeordneten absorbierenden Element, wobei die Oberlage einen Stapel mit einer ersten Lage und einer zweiten Lage aufweist, der Stapel mehrere Verbindungsabschnitte aufweist, die durch teilweises Verbinden der ersten Lage und der zweiten Lage gebildet werden, und mehrere Vorsprünge aufweist, die in Richtung zum Körper eines Trägers hervorstehen, wobei die Vorsprünge derart ausgebildet sind, dass von den Verbindungsabschnitten verschiedene Abschnitte der ersten Lage von der zweiten Lage weg gerichtet hervorstehen, und wobei die Oberlage aufweist:
  • einen Mittenbereich, der in einer Mitte in einer Breitenrichtung der Oberlage angeordnet ist und sich in einer Längsrichtung davon erstreckt, und
  • ein Paar Seitenbereiche, die sich in der Längsrichtung erstrecken, wobei die Seitenbereiche dem Mittenbereich benachbart sind,
  • wobei eine Form und/oder ein Anordnungsmuster der Verbindungsabschnitte zwischen dem Mittenbereich und den Seitenbereichen verschieden sind,
  • ein Flächenverhältnis der Verbindungsabschnitte zwischen dem Mittenbereich und den Seitenbereichen im Wesentlichen gleich ist, und
  • die Anzahl der Verbindungsabschnitte pro Flächeneinheit in den Seitenbereichen größer ist als im Mittenbereich.
• <2> Der absorbierende Artikel gemäß Abschnitt <1>, wobei die Oberlage eine Beziehung C > D erfüllt, wobei C eine Fläche des Verbindungsabschnitts darstellt, der die größte Fläche unter den im Mittenbereich ausgebildeten Verbindungsabschnitten aufweist, und D eine Fläche des Verbindungsabschnitts darstellt, der die größte Fläche unter den in den Seitenbereichen ausgebildeten Verbindungsabschnitten aufweist.
• <3> Der absorbierende Artikel gemäß Abschnitt <1> oder <2>, wobei die Oberlage eine Beziehung E > F erfüllt, wobei E eine Länge des Verbindungsabschnitts in der Längsrichtung darstellt, der die längste Länge unter den im Mittenbereich ausgebildeten Verbindungsabschnitten aufweist, und F eine Länge des Verbindungsabschnitts in der Längsrichtung darstellt, der die längste Länge unter den in den Seitenbereichen ausgebildeten Verbindungsabschnitten aufweist.
• <4> Der absorbierende Artikel gemäß einem der Abschnitte <1> bis <3>, wobei die Oberlage derart konfiguriert ist, dass jeder der Seitenbereiche der Oberlage eine höhere Scherspannung aufweist als der Mittenbereich der Oberlage.
• <5> Absorbierender Artikel gemäß einem der Abschnitte 1 bis 4, mit:
  • einem vorderen Abschnitt, der dafür vorgesehen ist, auf einer Bauchseite eines Trägers angeordnet zu werden, wenn der absorbierende Artikel getragen wird,
  • einem hinteren Abschnitt, der dafür vorgesehen ist, auf einer Rückseite des Trägers angeordnet zu werden, und
  • einem Schrittabschnitt, der dafür vorgesehen ist zwischen dem vorderen Abschnitt und dem hinteren Abschnitt angeordnet zu werden,
  • wobei der Mittenbereich und die Seitenbereiche mindestens im Schrittbereich ausgebildet sind.
• <6> Absorbierender Artikel nach einem der Abschnitte 1 bis 5, mit:
  • einem vorderen Abschnitt, der dafür vorgesehen ist, auf einer Bauchseite eines Trägers angeordnet zu werden, wenn der absorbierende Artikel getragen wird,
  • einem hinteren Abschnitt, der dafür vorgesehen ist, auf einer Rückseite des Trägers angeordnet zu werden, und
  • einem Schrittabschnitt, der dafür vorgesehen ist, zwischen dem vorderen Abschnitt und dem hinteren Abschnitt angeordnet zu werden,
  • wobei der Mittenbereich und die Seitenbereiche vorzugsweise derart ausgebildet sind, dass sie sich vom Schrittabschnitt zum vorderen Abschnitt und/oder zum hinteren Abschnitt erstrecken, bevorzugter derart ausgebildet sind, dass sie sich über die gesamte Länge des absorbierenden Elements erstrecken, und noch bevorzugter über die gesamte Länge des absorbierenden Artikels ausgebildet sind.
• <7> Der absorbierende Artikel gemäß einem der Abschnitte <1> bis <6>, wobei eine Breite des Mittenbereichs vorzugsweise 30% oder mehr, bevorzugter 40% oder mehr und vorzugsweise 70% oder weniger, bevorzugter 70% oder weniger einer Breite der Oberlage beträgt.
• <8> Der absorbierende Artikel gemäß einem der Abschnitte <1> bis <7>, wobei eine Breite jedes der Seitenbereiche vorzugsweise 15% oder mehr und 35% oder weniger und bevorzugter 20% oder mehr und 30% oder weniger einer Breite der Oberlage beträgt.
• <9> Der absorbierende Artikel gemäß einem der Abschnitte <1> bis <8>, wobei eine Gesamtbreite der Seitenbereiche vorzugsweise 30% oder mehr, bevorzugter 40% oder mehr und 70% oder weniger, bevorzugter 60% oder weniger der Breite der Oberlage beträgt.
• <10> Der absorbierende Artikel gemäß einem der Abschnitte <1> bis <9>, wobei die Oberlage derart konfiguriert ist, dass im Mittenbereich und in jedem der Seitenbereiche eine zweite lagenseitige Oberfläche im Wesentlichen flach ist und Wellungen mit einer großen Höhe auf einer ersten lagenseitigen Oberfläche ausgebildet sind.
• <11> Der absorbierende Artikel gemäß einem der Abschnitte <1> bis <10>, wobei der Artikel aufweist: eine Längsrichtung, die einer Vorwärts-Rückwärts-Richtung des Trägers entspricht, und eine sich senkrecht zur Längsrichtung erstreckende laterale Richtung, wobei die im Mittenbereich der Oberlage enthaltenen Verbindungsabschnitte einen mittigen ersten Verbindungsabschnitt und einen mittigen zweiten Verbindungsabschnitt aufweisen, wobei der mittige erste Verbindungsabschnitt und der mittige zweite Verbindungsabschnitt rechteckige Formen mit Seiten, die sich in der Längsrichtung erstrecken, und mit Seiten aufweisen, die sich in der lateralen Richtung erstrecken, wobei die Form des mittigen ersten Verbindungsabschnitts von der Form des mittigen zweiten Verbindungsabschnitts verschieden ist.
• <12> Absorbierender Artikel gemäß einem der Abschnitte 1 bis 11, wobei der Artikel aufweist: eine Längsrichtung, die einer Vorwärts-Rückwärts-Richtung des Trägers entspricht, und eine sich senkrecht zur Längsrichtung erstreckende laterale Richtung, wobei die im Mittenbereich der Oberlage enthaltenen Verbindungsabschnitte mittige erste Verbindungsabschnitte und mittige zweite Verbindungsabschnitte aufweisen, wobei die mittigen ersten Verbindungsabschnitte derart angeordnet sind, dass sie erste Verbindungsabschnittreihen bilden, in denen die mittigen ersten Verbindungsabschnitte mit einem vorgegebenen Abstand dazwischen in der Längsrichtung angeordnet sind, die mittigen zweiten Verbindungsabschnitte derart angeordnet sind, dass sie zweite Verbindungsabschnittreihen und dritte Verbindungsabschnittreihen bilden, wobei die mittigen zweiten Verbindungsabschnitte mit einem vorgegebenen Abstand dazwischen in der Längsrichtung angeordnet sind, die zweite Verbindungsabschnittreihe und die dritte Verbindungsabschnittreihe zwischen den ersten Verbindungsabschnittreihen alternierend benachbart zueinander angeordnet sind, ein Abstand der in der zweiten Verbindungsabschnittreihe enthaltenen mittigen zweiten Verbindungsabschnitte in der Längsrichtung der gleiche ist wie ein Abstand der in der dritten Verbindungsabschnittreihe enthaltenen mittigen zweiten Verbindungsabschnitte in der Längsrichtung, und die in der zweiten Verbindungsabschnittreihe enthaltenen mittigen zweiten Verbindungsabschnitte um einen halben Abstand von den in der dritten Verbindungsabschnittreihe enthaltenen mittigen zweiten Verbindungsabschnitten versetzt sind.
• <13> Absorbierender Artikel gemäß einem der Abschnitte <1> bis <12>, wobei der Artikel aufweist: eine Längsrichtung, die einer Vorwärts-Rückwärts-Richtung des Trägers entspricht, und eine sich senkrecht zur Längsrichtung erstreckende laterale Richtung, wobei die im Mittenbereich enthaltenen Vorsprünge einen mittigen ersten Vorsprung und einen mittigen zweiten Vorsprung aufweisen, wobei der mittige erste Vorsprung in der Draufsicht betrachtet eine im Wesentlichen elliptische Form aufweist, bei der eine Länge in der lateralen Richtung größer ist als eine Länge in der Längsrichtung, wobei der mittige zweite Vorsprung in der Draufsicht betrachtet eine im Wesentlichen kreisförmige Form hat, bei der eine Länge in der lateralen Richtung einer Länge in der Längsrichtung im Wesentlichen gleicht.
• <14> Absorbierender Artikel gemäß einem der Abschnitte <1> bis <13>, wobei der Artikel aufweist: eine Längsrichtung, die einer Vorwärts-Rückwärts-Richtung des Trägers entspricht, und eine sich senkrecht zur Längsrichtung erstreckende laterale Richtung, wobei die in den Seitenbereichen enthaltenen Verbindungsabschnitte einen seitlichen ersten Verbindungsabschnitt und einen seitlichen zweiten Verbindungsabschnitt aufweisen, wobei der seitliche erste Verbindungsabschnitt und der seitliche zweite Verbindungsabschnitt rechteckige Formen mit Seiten, die sich in der Längsrichtung erstrecken, und mit Seiten aufweisen, die sich in der Seitenrichtung erstrecken, und wobei die Form des seitlichen ersten Verbindungsabschnitts von der Form des seitlichen zweiten Verbindungsabschnitts verschieden ist.
• <15> Absorbierender Artikel gemäß einem der Abschnitte <1> bis <14>, wobei der Artikel aufweist: eine Längsrichtung, die einer Vorwärts-Rückwärts-Richtung des Trägers entspricht; und eine sich senkrecht zur Längsrichtung erstreckende laterale Richtung, wobei die in den Seitenbereichen enthaltenen Verbindungsabschnitte seitliche erste Verbindungsabschnitte und seitliche zweite Verbindungsabschnitte aufweisen, wobei die seitlichen ersten Verbindungsabschnitte derart angeordnet sind, dass sie vierte Verbindungsabschnittreihen bilden, wobei die seitlichen ersten Verbindungsabschnitte mit einem vorgegebenen Abstand dazwischen in der Längsrichtung angeordnet sind, die seitlichen zweiten Verbindungsabschnitte derart angeordnet sind, dass sie fünfte Verbindungsabschnittreihen bilden, wobei die seitlichen zweiten Verbindungsabschnitte mit einem vorgegebenen Abstand dazwischen in der Längsrichtung angeordnet sind, die vierte Verbindungsabschnittreihe und die fünfte Verbindungsabschnittreihe sind in der lateralen Richtung alternierend angeordnet sind, ein Abstand der in der vierten Verbindungsabschnittreihe enthaltenen seitlichen ersten Verbindungsabschnitte dem Abstand der in der fünften Verbindungsabschnittreihe enthaltenen seitlichen zweiten Verbindungsabschnitte gleicht, und die in der vierten Verbindungsabschnittreihe enthaltenen seitlichen ersten Verbindungsabschnitte um einen halben Abstand von den in der fünften Verbindungsabschnittreihe enthaltenen seitlichen zweiten Verbindungsabschnitten versetzt sind.
• <16> Der absorbierende Artikel gemäß einem der Abschnitte <1> bis <15>, wobei die im Mittenbereich enthaltenen Vorsprünge einen mittigen ersten Vorsprung und einen mittigen zweiten Vorsprung aufweisen, wobei die Höhe des mittigen ersten Vorsprungs von der Höhe des mittigen zweiten Vorsprungs verschieden ist.
• <17> Der absorbierende Artikel gemäß einem der Abschnitte <1> bis <16>, wobei die Höhe der im Mittenbereich enthaltenen Vorsprünge größer ist als die Höhe der in den Seitenbereichen enthaltenen Vorsprünge, oder wobei die Höhe der im Mittenbereich enthaltenen Vorsprünge der Höhe der in den Seitenbereichen enthaltenen Vorsprünge gleicht.
• <18> Der absorbierende Artikel gemäß einem der Abschnitte 1 bis 17, wobei das Anordnungsmuster der Verbindungsabschnitte zwischen dem Mittenbereich und den Seitenbereichen verschieden ist, und die Form der Verbindungsabschnitte auch zwischen dem Mittenbereich und den Seitenbereichen verschieden ist.
• <19> Der absorbierende Artikel gemäß einem der Abschnitte <1> bis <18>, wobei das Flächenverhältnis der Verbindungsabschnitte im Mittenbereich und das Flächenverhältnis der Verbindungsabschnitte in den Seitenbereichen vorzugsweise 10% oder mehr, bevorzugter 15% oder mehr und vorzugsweise 40% oder weniger, bevorzugter 35% oder weniger betragen.
• <20> Der absorbierende Artikel gemäß einem der Abschnitte <1> bis <19>, wobei eine Fläche D vorzugsweise 80% oder weniger einer Fläche C, bevorzugter 70% oder weniger und vorzugsweise 20% oder mehr, bevorzugter 30% oder mehr der Fläche C beträgt, wobei der Bereich C eine Fläche des Verbindungsabschnitts darstellt, die die größte Fläche unter den in den Seitenbereichen ausgebildeten Verbindungsabschnitten aufweist, und der Bereich D eine Fläche des Verbindungsabschnitts darstellt, die die größte Fläche unter den im Mittenbereich ausgebildeten Verbindungsabschnitten aufweist.
• <21> Der absorbierende Artikel gemäß einem der Abschnitte <1> bis <20>, wobei ein Anteil einer Gesamtfläche der Verbindungsabschnitte einer Fläche C an einer Gesamtfläche der Verbindungsabschnitte im Mittenbereich vorzugsweise 20% oder mehr, bevorzugter 30% oder mehr und vorzugsweise 80% oder weniger, bevorzugter 70% oder weniger beträgt, wobei die Fläche C eine Fläche des Verbindungsabschnitts darstellt, die die größte Fläche unter den in den Seitenbereichen ausgebildeten Verbindungsabschnitten aufweist, und D eine Fläche des Verbindungsabschnitts darstellt, die die größte Fläche unter den im Mittenbereich ausgebildeten Verbindungsabschnitten aufweist.
• <22> Der absorbierende Artikel gemäß einem der Abschnitte <1> bis <21>, wobei ein Anteil einer Gesamtfläche der Verbindungsabschnitte einer Fläche D an einer Gesamtfläche der Verbindungsabschnitte in den Seitenbereichen vorzugsweise 80% oder mehr, bevorzugter 90% oder mehr beträgt und der obere Grenzwert des Anteils vorzugsweise 100% beträgt, wobei C eine Fläche des Verbindungsabschnitts darstellt, die die größte Fläche unter den in den Seitenbereichen ausgebildeten Verbindungsabschnitten aufweist, und wobei die Fläche D eine Fläche des Verbindungsabschnitts darstellt, der die größte Fläche unter den im Mittenbereich ausgebildeten Verbindungsabschnitten aufweist.
• <23> Der absorbierende Artikel gemäß einem der Abschnitte 1 bis 22, wobei der Artikel aufweist: eine Längsrichtung, die einer Vorwärts-Rückwärts-Richtung des Trägers entspricht, und eine sich senkrecht zur Längsrichtung erstreckende laterale Richtung, wobei eine Länge F vorzugsweise 80% oder weniger, bevorzugter 70% oder weniger und vorzugsweise 20% oder mehr, bevorzugter 30% oder mehr einer Länge E beträgt, wobei E eine Länge des Verbindungsabschnitts in der Längsrichtung darstellt, der die längste Länge unter den im Mittenbereich ausgebildeten Verbindungsabschnitten aufweist, und F eine Länge des Verbindungsabschnitts in der Längsrichtung darstellt, der die längste Länge unter den in den Seitenbereichen ausgebildeten Verbindungsabschnitten aufweist.
• <24> Der absorbierende Artikel gemäß einem der Abschnitte <1> bis <23>, wobei ein Anteil einer Gesamtfläche der Verbindungsabschnitte der Länge E an einer Gesamtfläche der Verbindungsabschnitte im Mittenbereich vorzugsweise 20% oder mehr, bevorzugter 30% beträgt und der obere Grenzwert des Anteils vorzugsweise 100% beträgt, wobei die Länge E eine Länge des Verbindungsabschnitts in der Längsrichtung darstellt, der die längste Länge unter den im Mittenbereich ausgebildeten Verbindungsabschnitten aufweist, und F eine Länge des Verbindungsabschnitts in der Längsrichtung darstellt, der die größte Länge unter den in den Seitenbereichen ausgebildeten Verbindungsabschnitten aufweist.
• <25> Der absorbierende Artikel gemäß einem der Abschnitte <1> bis <24>, wobei ein Anteil einer Gesamtfläche der Verbindungsabschnitte einer Länge F an einer Gesamtfläche der Verbindungsabschnitte in den Seitenbereichen vorzugsweise 60% oder mehr, bevorzugter 80% oder mehr beträgt und der obere Grenzwert des Anteils vorzugsweise 100% beträgt, wobei E eine Länge des Verbindungsabschnitts in der Längsrichtung darstellt, der die größte Länge unter den im Mittenbereich ausgebildeten Verbindungsabschnitten aufweist und die Länge F eine Länge des Verbindungsabschnitts in der Längsrichtung darstellt, der die größte Länge unter den in den Seitenbereichen ausgebildeten Verbindungsabschnitten aufweist.
• <26> Der absorbierende Artikel gemäß einem der Abschnitte <1> bis <25>, wobei die Scherbeanspruchung des Mittenbereichs einen Wert von vorzugsweise 25 N oder mehr, bevorzugter 30 N oder mehr und vorzugsweise 34 N oder weniger, bevorzugter 33 N oder weniger annimmt.
• <27> Der absorbierende Artikel gemäß einem der Abschnitte <1> bis <26>, wobei die Scherbeanspruchung jedes der Seitenbereiche einen Wert von vorzugsweise 33 N oder mehr, bevorzugter 35 N oder mehr und vorzugsweise 45 N oder weniger, bevorzugter 40 N oder weniger, unter der Bedingung einnimmt, dass die Scherspannung jedes der Seitenbereiche höher ist als die Scherspannung des Mittenbereichs.
• <28> Der absorbierende Artikel gemäß einem der Abschnitte <1> bis <27>, wobei eine Beziehung S_max > M_max erfüllt ist, wobei S_max eine Fläche des Vorsprungs darstellt, die die größte Fläche unter den Vorsprüngen im Mittenbereich aufweist, und M_max eine Fläche des Vorsprungs darstellt, die die größte Fläche unter den Vorsprüngen in den Seitenbereichen aufweist.
• <29> Der absorbierende Artikel gemäß einem der Abschnitte <1> bis <28>, wobei Faservliese, die als Lagenmaterialien zum Ausbilden der ersten Lage und der zweiten Lage verwendet werden, ein Flächengewicht von vorzugsweise 10 g/m² oder mehr, bevorzugter 15 g/m² oder mehr und vorzugsweise 40 g/m² oder weniger, bevorzugter 35 g/m² oder weniger aufweisen.

For the embodiment described above, further absorbent articles provided by the present invention will be described below.

• <1> An absorbent article comprising: a topsheet; a pad and an absorbent element disposed between the topsheet and the pad, the topsheet having a stack with a first ply and a second ply, the stack having a plurality of bond portions formed by partially bonding the first ply and the second ply, and a plurality of projections projecting towards the body of a carrier, the projections being formed such that portions of the first layer projecting from the connecting portions project away from the second layer, and wherein the top layer comprises:
  • a center portion disposed at a center in a width direction of the top sheet and extending in a longitudinal direction thereof, and
  • a pair of side portions extending in the longitudinal direction, the side portions being adjacent to the center portion,
  • wherein a shape and / or an arrangement pattern of the connecting portions are different between the center area and the side areas,
  • an area ratio of the connecting portions between the center area and the side areas is substantially equal, and
  • the number of connecting sections per unit area in the side areas is greater than in the middle area.
• <2> The absorbent article according to clause <1>, wherein the topsheet satisfies a relationship C> D, where C represents a surface of the joint portion having the largest area among the joint portions formed in the center region, and D represents a surface of the joint portion which is the largest Has area under the formed in the side regions connecting portions.
• <3> The absorbent article according to clause <1> or <2>, wherein the topsheet satisfies a relation E> F, where E represents a length of the connecting portion in the longitudinal direction having the longest length among the connecting portions formed in the central region, and F represents a length of the connecting portion in the longitudinal direction having the longest length among the connecting portions formed in the side portions.
• <4> The absorbent article according to any one of the sections <1> to <3>, wherein the topsheet is configured such that each of the topsheet side portions has a higher shear stress than the center portion of the topsheet.
• <5> Absorbent article according to one of the sections 1 to 4 , With:
  • a front portion intended to be placed on a ventral side of a wearer when the absorbent article is worn,
  • a rear portion, which is intended to be arranged on a rear side of the carrier, and
  • a crotch portion intended to be disposed between the front portion and the rear portion,
  • wherein the center region and the side regions are formed at least in the crotch region.
• <6> Absorbent article after one of the sections 1 to 5 , With:
  • a front portion intended to be placed on a ventral side of a wearer when the absorbent article is worn,
  • a rear portion, which is intended to be arranged on a rear side of the carrier, and
  • a crotch portion intended to be disposed between the front portion and the rear portion,
  • wherein the center region and the side regions are preferably formed to extend from the crotch portion to the front portion and / or the back portion, more preferably formed to extend the entire length of the absorbent element, and more preferably over the entire length Length of the absorbent article are formed.
• <7> The absorbent article according to any one of the sections <1> to <6>, wherein a width of the central portion is preferably 30% or more, more preferably 40% or more and preferably 70% or less, more preferably 70% or less of a width of the topsheet is.
• <8> The absorbent article according to any one of the sections <1> to <7>, wherein a width of each of the side regions is preferably 15% or more and 35% or less and more preferably 20% or more and 30% or less of a width of the topsheet ,
• <9> The absorbent article according to any one of the sections <1> to <8>, wherein a total width of the side regions is preferably 30% or more, more preferably 40% or more and 70% or less, more preferably 60% or less of the width of the topsheet ,
• <10> The absorbent article according to any one of the sections <1> to <9>, wherein the topsheet is configured so that a second layer side surface is substantially flat in the center region and in each of the side regions and corrugations having a high height on a first side layer side surface are formed.
• <11> The absorbent article according to any one of the sections <1> to <10>, the article comprising: a longitudinal direction corresponding to a front-rear direction of the wearer and a lateral direction extending perpendicular to the longitudinal direction, wherein the in Center portion of the upper layer containing connecting portions have a central first connecting portion and a central second connecting portion, wherein the central first connecting portion and the central second connecting portion rectangular shapes with sides that extend in the longitudinal direction, and with sides that extend in the lateral direction wherein the shape of the central first connecting portion is different from the shape of the central second connecting portion.
• <12> Absorbent article according to one of the sections 1 to 11 wherein the article comprises: a longitudinal direction corresponding to a front-to-back direction of the carrier and a lateral direction extending perpendicular to the longitudinal direction, wherein the connecting portions contained in the central region of the top layer have central first connecting portions and central second connecting portions, the central ones first connecting portions are arranged so as to form first connecting portion rows in which the central first connecting portions are arranged at a predetermined distance therebetween in the longitudinal direction, the central second connecting portions are arranged to form second connecting portion rows and third connecting portion rows, the central second ones Connecting portions are arranged with a predetermined distance therebetween in the longitudinal direction, the second connecting portion row and the third connecting portion row between the first Verbindu A distance of the central second connecting portions included in the second connecting portion row in the longitudinal direction is the same as a distance of the central second connecting portions contained in the third connecting portion row in the longitudinal direction, and the central second connecting portions contained in the second connecting portion row offset by half a distance from the central second connecting portions included in the third connecting section row.
• <13> The absorbent article according to any one of the sections <1> to <12>, the article comprising: a longitudinal direction corresponding to a front-rear direction of the carrier and a lateral direction extending perpendicular to the longitudinal direction, those in the center region protrusions having a central first projection and a central second projection, wherein the central first projection viewed in plan view has a substantially elliptical shape, wherein a length in the lateral direction is greater than a length in the longitudinal direction, wherein the central second As seen in the plan view, a projection in the plan view has a substantially circular shape in which a length in the lateral direction is substantially equal to a length in the longitudinal direction.
• <14> The absorbent article according to any one of the sections <1> to <13>, the article comprising: a longitudinal direction corresponding to a front-rear direction of the carrier and a lateral direction extending perpendicular to the longitudinal direction, wherein the connection portions included in the side portions have a side first connection portion and a side second connection portion, the side first connection portion and the side second connection portion having rectangular shapes with sides extending in the longitudinal direction and sides extending in the side direction extend, and wherein the shape of the lateral first connecting portion is different from the shape of the lateral second connecting portion.
• <15> The absorbent article according to any one of the sections <1> to <14>, the article comprising: a longitudinal direction corresponding to a front-back direction of the wearer; and a lateral direction extending perpendicular to the longitudinal direction, wherein the connecting portions included in the side portions have lateral first connecting portions and lateral second connecting portions, the lateral first connecting portions being arranged to form fourth connecting portion rows, the lateral first connecting portions being a predetermined distance are arranged between them in the longitudinal direction, the lateral second connecting portions are arranged to form fifth connecting portion rows, the lateral second connecting portions being arranged at a predetermined distance therebetween in the longitudinal direction, the fourth connecting portion row and the fifth connecting portion row are alternating in the lateral direction are arranged, a distance of the fourth connecting portion row contained in the first connecting portions of the Abst is equal to the lateral second connecting portions included in the fifth connecting portion row, and the lateral first connecting portions included in the fourth connecting portion row are offset by half a distance from the lateral second connecting portions included in the fifth connecting portion row.
• <16> The absorbent article according to any one of the sections <1> to <15>, wherein the projections contained in the central portion have a central first projection and a central second projection, wherein the height of the central first projection is different from the height of the central second projection is.
• <17> The absorbent article according to any one of the sections <1> to <16>, wherein the height of the projections contained in the center portion is greater than the height of the projections contained in the side portions, or wherein the height of the projections contained in the central portion of the height of the similar to projections contained in the side areas.
• <18> The absorbent article according to one of the sections 1 to 17 wherein the arrangement pattern of the connecting portions is different between the center area and the side areas, and the shape of the connecting portions is also different between the center area and the side areas.
• <19> The absorbent article according to any one of the sections <1> to <18>, wherein the area ratio of the connecting portions in the central area and the area ratio of the connecting portions in the side areas are preferably 10% or more, more preferably 15% or more, and preferably 40% or less , more preferably 35% or less.
• <20> The absorbent article according to any one of the sections <1> to <19>, wherein an area D is preferably 80% or less of an area C, more preferably 70% or less, and preferably 20% or more, more preferably 30% or more of the area C, where the area C represents an area of the connection portion having the largest area among the connection portions formed in the side areas, and the area D represents a surface of the connection portion having the largest area among the connection portions formed in the center area.
• <21> The absorbent article according to any one of the sections <1> to <20>, wherein a proportion of a total area of the connecting portions of a surface C on a total area of the connecting portions in the center region is preferably 20% or more, more preferably 30% or more, and preferably 80% or less, more preferably 70% or less, the surface C being an area of the connecting portion and D represents a surface of the connecting portion having the largest area among the connecting portions formed in the center portion.
• <22> The absorbent article according to any one of the sections <1> to <21>, wherein a proportion of a total area of the connecting portions of a surface D on a total area of the connecting portions in the side regions is preferably 80% or more, more preferably 90% or more, and upper limit of the proportion is preferably 100%, where C represents an area of the joint portion having the largest area among the joint portions formed in the side portions, and the area D represents an area of the joint portion having the largest area among those in the center region Having connecting portions.
• <23> The absorbent article according to one of the sections 1 to 22 wherein the article comprises: a longitudinal direction corresponding to a forward-backward direction of the carrier and a lateral direction extending perpendicular to the longitudinal direction, wherein a length F is preferably 80% or less, more preferably 70% or less, and preferably 20% or is more, more preferably 30% or more, of a length E, where E represents a length of the connecting portion in the longitudinal direction having the longest length among the connecting portions formed in the center portion, and F represents a length of the connecting portion in the longitudinal direction which is the longest length has under the formed in the side regions connecting portions.
• <24> The absorbent article according to any one of the sections <1> to <23>, wherein a proportion of a total area of the connecting portions of the length E on a total area of the connecting portions in the center region is preferably 20% or more, more preferably 30%, and the upper limit of Is preferably 100%, wherein the length E represents a length of the connecting portion in the longitudinal direction having the longest length among the connecting portions formed in the central region, and F represents a length of the connecting portion in the longitudinal direction, which is the greatest length among those in the Having side regions formed connecting portions.
• <25> The absorbent article according to any one of the sections <1> to <24>, wherein a ratio of a total area of the connecting portions of a length F to a total area of the connecting portions in the side regions is preferably 60% or more, more preferably 80% or more, and upper limit value of the portion is preferably 100%, where E represents a length of the connecting portion in the longitudinal direction having the largest length among the connecting portions formed in the center portion and the length F represents a length of the connecting portion in the longitudinal direction, which is the largest length among the Having in the side regions formed connecting portions.
• <26> The absorbent article according to any one of the sections <1> to <25>, wherein the shear stress of the center region assumes a value of preferably 25 N or more, more preferably 30 N or more, and preferably 34 N or less, more preferably 33 N or less ,
• <27> The absorbent article according to any one of the sections <1> to <26>, wherein the shear stress of each of the side regions has a value of preferably 33 N or more, more preferably 35 N or more, and preferably 45 N or less, more preferably 40 N or less on the condition that the shear stress of each of the side portions is higher than the shear stress of the center portion.
• <28> The absorbent article according to any one of the sections <1> to <27>, wherein a relationship S _max > M _{max is} satisfied, where S _{max is} an area of the protrusion having the largest area under the protrusions in the center area, and M _{max represents} an area of the protrusion that has the largest area under the protrusions in the side areas.
• <29> The absorbent article according to any one of the sections <1> to <28>, wherein nonwoven fabrics used as sheet materials for forming the first layer and the second layer have a basis weight of preferably 10 g / m ² or more, more preferably 15 g / m ² or more and preferably 40 g / m ² or less, more preferably 35 g / m ² or less.

Examples

Hereinafter, the present invention will be explained in more detail by way of examples. However, the scope of the present invention is not limited to the examples given below. Unless otherwise indicated, "%" means "% by mass".

example 1

A disposable diaper was made by placing the topsheet of a Merries® disposable diaper (made in the year 2015 by Kao Corporation) and then one in the 3 and 4 top layer was placed instead of the top layer removed. The in the 3 and 4 The upper layer shown had joint portions with the following dimensions: S11: 1 mm × 4 mm; S12: 1 mm × 1 mm, M11: 1 mm × 4 mm and M12: 1 mm × 3 mm (all had a rectangular shape).

As the first layer forming the topsheet, or in other words, the layer intended to be placed on the skin-facing surface of the wearer, an air-permeable nonwoven fabric (basis weight: 18 g / m ² ) was used. As the second layer, an air-permeable nonwoven fabric (basis weight: 18 g / m ² ) was used. The air-permeable nonwoven fabric constituting the first layer had a two-layered structure consisting of an upper layer and a lower layer, and the upper layer was composed of core-in-shell composite fibers (resin composition ratio: 5/5, 2.3 dtex , and core / sheath diameter ratio: 1.57) of polyethylene terephthalate and polyethylene. The backsheet was a cotton blend of core-in-shell composite fibers (resin mass ratio: 5/5, 2.3 dtex and core / shell diameter ratio: 1.57) of polyethylene and polyethylene terephthalate and core-in-shell composite fibers ( Resin mass ratio: 5/5, 2.2 dtex and core / shell diameter ratio: 1.42) of polypropylene and low melting polypropylene in a mass ratio of 5: 5. The air-permeable nonwoven fabric constituting the second layer was made of core-in-shell composite fibers (resin composition ratio: 5/5 and 2.3 dtex) of polyethylene terephthalate and polyethylene.

Example 2

A disposable diaper was made in the same manner as in Example 1, except that an in 6 (a) shown top layer was used as the top layer in Example 1. In the 6 (a) The topsheet shown had joint sections having the following dimensions: S11: 1 mm × 2 mm, S12: 1 mm × 1 mm, and M11: 1 mm × 1 mm (all had a rectangular shape).

Example 3

A disposable diaper was made in the same manner as in Example 1, except that an in 6 (b) shown top layer was used as the top layer in Example 1. In the 6 (b) The topsheet shown had joint portions having the following dimensions: S11: 1 mm × 3 mm, S12: 1 mm × 1 mm and M11: 1 mm × 1 mm (all had a rectangular shape).

Comparative Example 1

A disposable diaper was produced in the same manner as in Example 1, except that a topsheet in which only the joining portions of the side portions of the topsheet used in Example 1 were formed over the entire area thereof was used as the topsheet in Example 1.

evaluation

The disposable diapers obtained in Examples and Comparative Example were evaluated for the texture of the topsheet and the degree of separation between layers contained in the topsheet using the following methods. The results are shown in Table 1 below.

Softness of the top layer

Ten mothers with babies using diapers participated.

Each diaper was evaluated for the softness of the surface material according to the following criteria. The results obtained are shown in Table 1.

First, the topsheet of the Merries® disposable diaper (made in the year 2015 by Kao Corporation), and the texture at that time was set as reference ( 3 Points). Then, a rating was made based on five degrees: 1 point (soft), 2 points (slightly soft), 3 points (as soft as Merries), 4 points (not so soft), 5 points (not soft), and the softness became evaluated using the average score of the ten participants.

Degree of separation between the layers in the top layer

An acrylic plate was placed on a sample, a load was applied thereto so that the pressure reached 3.5 KPa, which corresponds to the pressure assumed to be exerted when an infant is sitting on it, and then the acrylic plate became a predetermined number of times over a stroke length of 10 cm, and the degree of separation was visually checked and evaluated. The degree of separation of the topsheet of the Merries® disposable diaper (made in the year 2015 by Kao Corporation) was defined as "medium", a degree of separation lower than that was classified as "low", and a degree of separation higher than this was rated as "high". Table 1 example 1 Example 2 Example 3 Comparative Example 1 Area ratio of connecting sections (%) mid-range 32 18 21 30 Pages area 30 17 18 30 Number of connecting sections (per cm ² ) mid-range 8th 10 10 15 page range 15 17 18 15 Maximum surface of connecting sections (cm ² ) mid-range 4 2 3 1 Pages area 4 1 1 1 Maximum length of connecting sections in longitudinal direction (mm) mid-range 4 2 3 1 Pages area 4 1 1 1 Shear stress (N) mid-range 32 30 26 35 Pages area 38 35 37 32 Texture of the top layer (dot) mid-range 1.8 1.9 1.7 3.2 page range 3.1 2.8 2.7 3.1 Degree of separation between layers of the top layer mid-range medium medium Medium to high medium page range medium medium medium medium

As is apparent from the results shown in Table 1, the topsheets of the diapers of Examples have a better texture than those of the diaper of Comparative Example. It is unlikely that layers will separate from each other.

Industrial applicability

The present invention provides an absorbent article that has good texture and is unlikely to separate two layers from one another, and is unlikely to form a space between the two layers.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• JP 2009136349 A [0003]
• JP 2009148445 A [0003]
• JP 2015112343 A [0038]

Claims (29)

Absorbent article, comprising: a topsheet; a pad and an absorbent element disposed between the topsheet and the pad; the topsheet having a stack with a first layer and a second layer, the stack has a plurality of connecting portions formed by partially connecting the first layer and the second layer and having a plurality of protrusions protruding toward the body of a carrier, wherein the protrusions are formed such that different portions of the first layer from the connecting portions projecting away from the second layer, and the top layer comprising: a center portion disposed at a center in a width direction of the top sheet and extending in a longitudinal direction thereof, and a pair of side portions extending in the longitudinal direction, the side portion being adjacent to the center portion, and a shape and / or an arrangement pattern of the connecting portions being different between the center portion and the side portions; an area ratio of the connecting portions between the center area and the side areas is substantially equal, and the number of connecting sections per unit area in the side areas is greater than in the center area. Absorbent article after Claim 1 wherein the top sheet satisfies a relationship C> D, where C represents a surface of the joint portion having the largest area among the joint portions formed in the center region, and D represents a surface of the joint portion which is the largest area among the joint portions formed in the side regions having. Absorbent article after Claim 1 or 2 wherein the top sheet satisfies a relationship E> F, where E represents a length of the connecting portion in the longitudinal direction having the longest length among the connecting portions formed in the center portion, and F represents a length of the connecting portion in the longitudinal direction which is the longest length below having the formed in the side regions connecting portions. Absorbent article after one of Claims 1 to 3 wherein the topsheet is configured such that each of the topsheet side regions has a higher shear stress than the center region of the topsheet. Absorbent article after one of Claims 1 to 4 , comprising: a front portion adapted to be placed on a ventral side of a wearer when the absorbent article is worn; a rear portion intended to be placed on a back side of the carrier; and a crotch portion provided for being disposed between the front portion and the rear portion, wherein the center portion and the side portions are formed at least in the crotch area. Absorbent article after one of Claims 1 to 5 , comprising: a front portion adapted to be placed on a ventral side of a wearer when the absorbent article is worn; a rear portion intended to be placed on a back side of the carrier; and a crotch portion disposed between the front portion and the rear portion, wherein the center portion and the side portions are formed to extend from the crotch portion to the front portion and / or the rear portion. Absorbent article after one of Claims 1 to 6 wherein a width of the center portion is 30% or more and 70% or less of a width of the topsheet. Absorbent article after one of Claims 1 to 7 wherein a width of each of the side portions is 15% or more and 35% or less of a width of the topsheet. Absorbent article after one of Claims 1 to 8th wherein a total width of the side regions is 30% or more and 70% or less of the width of the topsheet. Absorbent article after one of Claims 1 to 9 wherein the topsheet is configured such that in the center region and in each of the side regions, a second layer side surface is substantially flat, and corrugations having a large height are formed on a first layer side surface. Absorbent article after one of Claims 1 to 10 wherein the article comprises: a longitudinal direction corresponding to a front-rear direction of the carrier and a lateral direction extending perpendicular to the longitudinal direction, the connecting portions included in the central region of the top layer having a central first connecting portion and a central second connecting portion the central first connecting portion and the central second connecting portion have rectangular shapes with sides extending in the longitudinal direction and having sides extending in the lateral direction, the shape of the central first connecting portion being different from the shape of the central second connecting portion , Absorbent article after one of Claims 1 to 11 wherein the article comprises: a longitudinal direction corresponding to a front-to-back direction of the carrier and a lateral direction extending perpendicular to the longitudinal direction, wherein the connecting portions contained in the central region of the top layer have central first connecting portions and central second connecting portions, the central ones first connecting portions are arranged so as to form first connecting portion rows in which the central first connecting portions are arranged at a predetermined distance therebetween in the longitudinal direction, the central second connecting portions are arranged to form second connecting portion rows and third connecting portion rows, the central second ones Connecting portions are arranged with a predetermined distance therebetween in the longitudinal direction, the second connecting portion row and the third connecting portion row between the first Verbindu A distance of the central second connecting portions included in the second connecting portion row in the longitudinal direction is the same as a distance of the central second connecting portions contained in the third connecting portion row in the longitudinal direction, and the central second connecting portions contained in the second connecting portion row offset by half a distance from the central second connecting portions included in the third connecting section row. Absorbent article after one of Claims 1 to 12 wherein the article comprises: a longitudinal direction corresponding to a forward-backward direction of the carrier and a lateral direction extending perpendicular to the longitudinal direction, the projections contained in the central region having a central first projection and a central second projection, the central one first protrusion in the plan view has a substantially elliptical shape in which a length in the lateral direction is greater than a length in the longitudinal direction, the central second protrusion when viewed in plan view has a substantially circular shape in which a length in the lateral direction is substantially equal to a length in the longitudinal direction. Absorbent article after one of Claims 1 to 13 wherein the article comprises: a longitudinal direction corresponding to a front-rear direction of the carrier and a lateral direction extending perpendicular to the longitudinal direction, the connecting portions included in the side regions having a lateral first connecting portion and a lateral second connecting portion lateral first connecting portion and the lateral second connecting portion have rectangular shapes with sides extending in the longitudinal direction and having sides extending in the lateral direction, and wherein the shape of the lateral first connecting portion is different from the shape of the lateral second connecting portion. Absorbent article after one of Claims 1 to 14 wherein the article comprises: a longitudinal direction corresponding to a front-to-back direction of the carrier; and a lateral direction extending perpendicular to the longitudinal direction, wherein the connecting portions included in the side portions have lateral first connecting portions and lateral second connecting portions; wherein the lateral first connecting portions are arranged to form fourth connecting portion rows, the lateral first connecting portions being arranged at a predetermined distance therebetween in the longitudinal direction, the lateral second connecting portions being arranged to form fifth connecting portion rows, the lateral second connecting portions a distance of the lateral first connecting portions included in the fourth connecting portion row equals the distance of the lateral second connecting portions included in the fifth connecting portion row, and the lateral first connecting portions contained in the fourth connecting portion row by half a distance from n are offset from the lateral second connecting portions included in the fifth connecting portion row. Absorbent article after one of Claims 1 to 15 wherein the projections contained in the central region have a central first projection and a central second projection, wherein the height of the central first projection is different from the height of the central second projection. Absorbent article after one of Claims 1 to 16 wherein the height of the projections contained in the center portion is larger than the height of the projections contained in the side portions, or wherein the height of the projections contained in the center portion is equal to the height of the projections contained in the side portions. Absorbent article after one of Claims 1 to 17 wherein the arrangement pattern of the connecting portions is different between the center area and the side areas, and the shape of the connecting portions is also different between the center area and the side areas. Absorbent article after one of Claims 1 to 18 wherein the area ratio of the connecting portions in the center area and the area ratio of the connecting portions in the side areas are 10% or more and 40% or less. Absorbent article after one of Claims 1 to 19 wherein an area D is 20% or more and 80% or less of an area C, the area C being an area of the connection portion having the largest area among the connection portions formed in the side areas, and the area D being an area of the connection portion represents, which has the largest area under the connecting portions formed in the center region. Absorbent article after one of Claims 1 to 20 wherein a proportion of a total area of the connecting portions of a surface C on a total area of the connecting portions in the central area is 20% or more and 80% or less, the area C being an area of the connecting portion which is the largest area among the connecting portions formed in the side areas and D represents a surface of the connecting portion having the largest area among the connecting portions formed in the center portion. Absorbent article after one of Claims 1 to 21 wherein a ratio of a total area of the connecting portions of a surface D to a total area of the connecting portions in the side portions is 80% or more and 100% or less, where C represents an area of the connecting portion having the largest area among the connecting portions formed in the side portions , and wherein the surface D represents a surface of the connecting portion having the largest area among the connecting portions formed in the central region. Absorbent article after one of Claims 1 to 22 wherein the article comprises: a longitudinal direction corresponding to a front-to-back direction of the carrier, and a lateral direction extending perpendicular to the longitudinal direction, wherein a length F is 20% or more and 80% or less of a length E, the length E being a length of the connecting portion in the longitudinal direction, the longest length among the connecting portions formed in the central portion and the length F represents a length of the connecting portion in the longitudinal direction having the longest length among the connecting portions formed in the side portions. Absorbent article after one of Claims 1 to 23 wherein a proportion of a total area of the connecting portions of the length E to a total area of the connecting portions in the center region is 20% or more and 100% or less, the length E being a length of the connecting portion in the longitudinal direction, which is the longest length below that in the center region and F represents a length of the connecting portion in the longitudinal direction having the largest length among the connecting portions formed in the side portions. Absorbent article after one of Claims 1 to 24 wherein a proportion of a total area of the connecting portions of a length F on a total area of the connecting portions in the side areas is 60% or more and 100% or less, where E represents a length of the connecting portion in the longitudinal direction having the greatest length among those formed in the central area Has connecting portions and the length F represents a length of the connecting portion in the longitudinal direction, which has the connecting portion having the largest length among the connecting portions formed in the side regions. Absorbent article after one of Claims 1 to 25 wherein the shear stress of the center region assumes a value of 25 N or more and 34 N or less. Absorbent article after one of Claims 1 to 26 wherein the shearing stress of each of the side portions assumes a value of 33 N or more and 45 N under the condition that the shearing stress of each of the side portions is higher than the shearing stress of the center portion. Absorbent article after one of Claims 1 to 27 , wherein a relationship S _max > M _{max is} satisfied, where S _{max represents} a surface of the projection having the largest area under the projections in the center region, and M _{max represents} a surface of the projection having the largest area among the projections in the Has side areas. Absorbent article after one of Claims 1 to 28 wherein fibrous webs used as sheet materials for forming the first layer and the second layer have a basis weight of 10 g / m ² or more and 40 g / m ² or less.

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