TW201531285A - Absorbent article - Google Patents

Abstract

An absorbent article having a longitudinal direction, and a lateral direction that intersects with the longitudinal direction, the absorbent article having: an absorbent body that is provided along the longitudinal direction, and that absorbs dejecta; a ventral strip member that is provided along the lateral direction, and that covers, from the non-skin side of the absorbent body, one longitudinal end of the absorbent body, the central part of the ventral strip member in the lateral direction being fixed to said one end; and a dorsal strip member that is provided along the lateral direction as a separate member to said ventral strip member, and that covers, from the non-skin side of the absorbent body, the other longitudinal end of the absorbent body, the central part of the dorsal strip member in the lateral direction being fixed to said other end. The absorbent body has: an absorbent core formed by layering a liquid-absorbent material; and a liquid-impermeable leak-proof sheet that covers the absorbent core from the non-skin side thereof. Leg-surrounding elastic members are arranged along the longitudinal direction and laterally outwards from the absorbent core. A dorsal strip elastic member that intersects with a part of said leg-surrounding elastic members is arranged along the lateral direction on the dorsal strip member. A ventral strip elastic member that intersects with a part of said leg-surrounding elastic members is arranged along the lateral direction on the ventral strip member.; A region, in which a stretched section of the leg-surrounding elastic members intersects with the dorsal strip elastic member, is longer in the longitudinal direction than a region, in which a stretched section of the leg-surrounding elastic members intersects with the ventral strip elastic member.

Description

Absorbent article

The present invention relates to absorbent articles.

As an absorbent article that absorbs excrement, after using the three-piece type, Disposable diapers are well known. The disposable disposable diaper of the three-piece type is generally configured to have an absorbent body attached to the wearer's crotch for absorbing excrement, an abdomen side band member covering the wearer's abdomen side, and A back side strap member that covers the back side of the wearer. In the disposable disposable diaper of the three-piece type, an elastic member such as a rubber thread is provided on the side edge portion of the absorbent body (the position of the foot circumference when worn) to promote and assist the deformation of the absorbent body. technology. For example, Patent Document 1 discloses a technique in which the elastic member provided on the side edge portion of the absorbent body and the elastic member provided on the abdominal side belt member and the back side belt member are used to improve the fit of the diaper.

[Previous Technical Literature] [Patent Document]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2009-240640

Disposable disposable urine in the 3-piece type of Patent Document 1 The cloth is provided with an elastic member provided around the wearer's foot so that the fit of the absorbent body of the wearer's foot can be improved, and leakage of excrement from the absorbent body can be suppressed.

However, because there is no elastic structure around the wearer's buttocks Therefore, in the case where the wearer moves the body, the position of the absorbent body and the back side belt member covering the buttocks may be offset. In other words, there is a possibility that the fit on the buttocks side is insufficient, and that the disposable diaper is turned up after being used on the buttocks side.

The present invention has been developed in view of the aforementioned problems It is an object of the invention to provide a disposable disposable disposable diaper having sufficient fit on the buttocks side of a wearer.

In order to achieve the above object, an absorbent article has an absorbent article having a longitudinal direction and a transverse direction intersecting the longitudinal direction, and is characterized in that: the absorbent article is provided in the longitudinal direction for absorbing absorption of excrement The abdomen side band member that fixes the central portion in the lateral direction to the one end portion of the absorbent body in the longitudinal direction while covering the one end portion of the absorbent body in the longitudinal direction from the non-skin side of the absorbent body And a member different from the abdomen side belt member, which is disposed along the lateral direction as described above The non-skin side of the absorbent main body covers the other end portion of the absorbent body in the longitudinal direction, and the center portion in the lateral direction is fixed to the back side belt member at the other end portion, and the absorbent body has a liquid absorbing material. The absorbent core material laminated and the liquid-impermeable leakage preventing sheet covering the absorbent core material from the non-skin side of the absorbent core material are closer to the transverse direction than the absorbent core material The outer side of the direction is disposed along the longitudinal direction, and the back side belt member is disposed on the back side belt elastic member that intersects with a part of the foot circumference elastic member along the lateral direction, and the abdominal side belt is disposed on the side of the abdomen a member, wherein the abdominal side belt elastic member that intersects a part of the foot elastic member is disposed along the lateral direction, and the longitudinal direction of a region in which the stretched elastic member crosses the back side elastic member The length is larger than a portion of the foot elastic member that is in an extended state and a region where the abdominal side belt elastic member intersects The longitudinal direction of said greater length.

Other features of the present invention will become more apparent from the description of the specification and drawings.

According to the present invention, it is possible to provide a disposable disposable disposable diaper having sufficient fit on the buttocks side of the wearer.

1‧‧‧paper diapers (absorbent articles)

1HB‧‧‧waist opening

1HL‧‧‧foot opening

10‧‧‧Absorbable ontology

10ea‧‧‧ end

10eb‧‧‧End

10es‧‧‧ end

10p‧‧‧section

11‧‧‧Absorbent core material

11a‧‧‧After the abdomen

11b‧‧‧Back side of the back

11c‧‧‧Reducing section

13‧‧‧Surface sheet member

15‧‧‧Back sheet member

15a‧‧‧ leakproof sheet

15b‧‧‧Outer sheet

15bf‧‧‧ highlight

15bg‧‧‧return part

17‧‧‧foot elastic members

18‧‧‧LSG elastic members

19‧‧‧ Foot-assisted elastic members

30a‧‧‧Abdominal side strap members

30ac‧‧‧Central Department

30ac2‧‧‧ part

30ae‧‧‧lateral edge

30ae2‧‧‧End

30b‧‧‧Back side belt members

30bc‧‧‧Central Department

Section 30bc2‧‧‧

30be‧‧‧lateral edge

30be2‧‧‧ end

31‧‧‧ Non-woven

32‧‧‧ Non-woven

35‧‧‧Flexible components

35a‧‧‧Abaxial side with elastic members

35b‧‧‧Back side elastic members

40‧‧‧Illustrated sheet

50‧‧‧Reprocessing tape

AU‧‧‧ upper area

AD‧‧‧ lower area

ADc‧‧‧ Central Department

Central part of ADcc‧‧‧

End of ADce‧‧

ADe‧‧‧ part

LG‧‧‧Foot wrinkles

LSG‧‧‧Three-dimensional wrinkles (leak-proof wall)

LSGb‧‧‧ base end

LSGf‧‧‧ free end part

Figure 1 is a three-piece disposable disposable diaper (paper urine) of the present embodiment. A schematic oblique view of cloth 1).

Fig. 2 is a schematic plan view of the same diaper 1 as seen from the skin side.

Fig. 3 is a schematic plan view of the same diaper 1 as seen from the non-skin side.

4A is a cross-sectional view taken along line A-A and a cross-sectional view taken along line C-C of FIG. 2, and FIG. 4B is a cross-sectional view taken along line B-B of FIG. 2.

Fig. 5 is a view for explaining the relationship between the absorbent main body 10 of the present embodiment, the abdominal side belt member 30a, and the back side belt member 30b.

Fig. 6 is a view for explaining the relationship between the absorbent body 10 of the comparative example, the abdominal side belt member 30a, and the back side belt member 30b.

Fig. 7 is a schematic plan view showing an example in which the elastic member 35 is present in the central portion ADcc.

According to the description of the specification and the drawings, at least the following matters can be made clearer.

An absorbent article having an absorbent article in a longitudinal direction and a transverse direction crossing the longitudinal direction, characterized by comprising: an absorbent body provided in the longitudinal direction for absorbing excrement; and disposed along the lateral direction The abdomen side band member that fixes the central portion in the lateral direction to the one end portion of the absorbent body from the non-skin side of the absorbent body in the longitudinal direction, and the abdomen side band member Different members are disposed along the lateral direction, and cover the longitudinal direction of the absorbent body from the non-skin side of the absorbent body The other end portion is a back side belt member that fixes the center portion in the lateral direction to the other end portion, and the absorbent body has an absorbent core material in which a liquid absorbing material is laminated, and the absorbent core is provided The liquid-impermeable leakage preventing sheet covering the non-skin side of the absorbent core material is disposed closer to the lateral direction than the absorbent core member, and the foot-hanging elastic member is disposed along the longitudinal direction. The back side belt member is disposed along a lateral direction of the back side belt elastic member that intersects a part of the foot circumference elastic member, and the abdominal side belt member is elastically coupled to a portion of the abdomen side elastic member The member is disposed along the lateral direction, and the longitudinal length of the region in which the portion of the foot elastic member that is in the extended state intersects with the back side elastic member is longer than the portion of the foot elastic member that is in an extended state The aforementioned longitudinal direction length of the region where the abdominal side belt elastic members intersect is longer.

According to such an absorbent article, when the absorbent is worn In the case of an article, sufficient fit can be achieved on the buttock side of the wearer. Moreover, the force for pulling the abdomen side of the absorbent body in the lateral direction (width direction) is not excessively increased, and the fit can be maintained on the abdomen side without hindering the wearer from moving the foot forward. The action.

In the absorbent article, it is desirable to have the aforementioned foot elastic member The back side belt elastic members that partially intersect with each other are continuously disposed in the lateral direction from the one end portion to the other end portion of the back side belt member.

If such an absorbent article is used, The elastic force in the lateral direction of the elastic member acts on the center of the back side belt member In the part, the back side belt member can be brought into contact with the wearer's buttocks, and the fit on the buttocks side can be improved. Further, since the force of pulling the outer side of the absorbing body in the lateral direction (width direction) is increased by the elastic force of the elastic member on the back side, the absorbing body is less likely to be displaced on the buttock side of the wearer.

In the absorbent article, it is desirable to have the aforementioned foot elastic member The back side belt elastic member that partially intersects is provided between the one end portion and the other end portion of the back side belt member in the lateral direction, and has at least a discontinuous portion. The abdominal side belt elastic member that intersects a part of the foot elastic member has at least a discontinuous portion from one end portion to the other end portion of the abdominal side belt member in the lateral direction.

According to such an absorbent article, due to the side of the abdomen Since the member and the back side belt member do not impart stretchability to the center portion, shrinkage in the lateral direction of the center portion can be suppressed. Further, since the shrinkage of the absorbent core member in the lateral direction is also suppressed, wrinkles can be prevented from occurring in the absorbent core member.

In the absorbent article, the aforementioned back side belt elastic structure is desired The length in the lateral direction of the portion of the member that is in an extended state and overlaps with the absorbent core member is longer than the lateral length of the portion of the abdominal-side belt elastic member that is in an extended state and overlaps with the absorbent core member. Longer.

According to such an absorbent article, by making it on the back side The force that the absorbent core material is directly pulled outward in the lateral direction does not become too strong, and the absorbing body of the buttocks (absorbent core material) can be maintained, and the hips can be held on the buttocks. A certain space is formed between the absorbent core and the force of pulling the absorbent core directly outward in the lateral direction on the side of the abdomen, so that the absorbent body (absorbent core) can be more closely adhered to the body, and the excretion can be suppressed. The urine leaked out.

In the absorbent article, it is desirable that the aforementioned foot elastic member The longitudinal length of the portion in the extended state is longer than the longitudinal length of the absorbent core. One end side of the portion in the longitudinal direction of the stretched elastic member is disposed at a position closer to the outer side in the longitudinal direction than the end portion on the abdomen side of the absorbent core member, and the leg elastic member is in an extended state. The other end side in the longitudinal direction of the portion is disposed closer to the outer side in the longitudinal direction than the back end portion of the absorbent core member.

According to such an absorbent article, due to the foot bomb Since the region where the contraction force of the member is applied is formed to be larger, the effect of pulling the absorbent body outward in the lateral direction (width direction) by the back side belt elastic member (abdominal side belt elastic member) can be greatly increased.

In the absorbent article, it is desirable to be compared to when the aforementioned foot is rounded When the elastic member is attached to the absorbent body, the ratio of the foot elastic member is extended in the longitudinal direction, and when the back side elastic member is attached to the abdominal side belt member, the back side elastic member is elongated in the lateral direction. The ratio is even larger.

According to such an absorbent article, since it will absorb Since the force of the body (absorbent core material) expanding outward in the lateral direction acts more strongly, the absorbent body 10 (absorbent core material 11) is widened in the lateral direction in the buttock region of the wearer or the like. And become easy to suppress Excreta leaked out.

===implementation form === <Structure of disposable disposable diapers>

Fig. 1 is a schematic perspective view of a disposable disposable diaper (paper diaper 1) as an example of the absorbent article of the present embodiment. Fig. 2 is a schematic plan view of the same diaper 1 as seen from the skin side. Fig. 3 is a schematic plan view of the same diaper 1 as seen from the non-skin side. 4A is a cross-sectional view taken along line A-A and a cross-sectional view taken along line C-C of FIG. 2, and FIG. 4B is a cross-sectional view taken along line B-B of FIG.

As shown in FIG. 2, FIG. 4A and FIG. 4B, the disposable diaper 1 has There are longitudinal directions, lateral directions, and thickness directions which are three directions orthogonal to each other. Moreover, since the disposable diaper 1 is a so-called three-piece type, it has three parts 10, 30a, 30b. In other words, the disposable diaper 1 includes an absorbent body 10 as a first member for absorbing excrement such as urine disposed in the underarm portion of the wearer, and a second member covering the same wearer. The abdominal side belt member 30a on the side of the abdomen and the back side belt member 30b as the third member covering the back side of the wearer. Moreover, in the unfolded state of FIG. 2, the abdominal side belt member 30a (upper side in the longitudinal direction in the drawing) and the back side belt member 30b (the lower side in the longitudinal direction in the drawing) are arranged in parallel with each other in the longitudinal direction. The absorbent body 10 is hung between the belt members, and the respective end portions 10ea, 10eb of the longitudinal direction of the absorbent body 10 are joined and fixed to the closest belt members 30a, 30b, respectively. The shape is slightly H-shaped in a plan view. Further, from this state, the absorptive main body 10 is folded in half at a slightly central portion C10 in the longitudinal direction. Here, in the folded state, the abdominal side belt member side edge portion 30ae and the back side belt member side of the portion of the side belt member 30a and the back side belt member 30b which are opposed to each other are abutting on the side surface of the wearer. The edge portions 30be (that is, the respective end portions in the lateral direction) are joined and coupled, and the belt members 30a and 30b are formed into a ring shape. Thereby, the disposable diaper 1 in which the waist opening 1HB and the pair of foot opening 1HL are formed as shown in FIG. 1 is formed.

Further, as the abdominal side belt member side edge portion 30ae The connection structure connected to the back side belt member side edge part 30be can employ various connection structures. In addition, for example, it is possible to use a diaper type diaper by using a detachable connection structure such as a buckle member (not shown), and a detachable type diaper can be used as the diaper. Incidentally, in this example, the former connection structure is used, whereby the disposable diaper 1 of this embodiment is a pants type.

Moreover, in the following description, the longitudinal direction of the disposable diaper 1 is The lateral direction and the thickness direction are respectively referred to as [longitudinal direction], [lateral direction], and [thickness direction]. Further, regarding the thickness direction, the side in contact with the wearer is also referred to as [skin side], and the opposite side is referred to as [non-skin side]. In addition, since the [lateral direction] of the disposable diaper 1 is a shape of a disposable diaper as shown in FIG. 1, it can also be called [width direction] of the absorbent main body 10, and therefore, in the following description, The direction] is called the [width direction].

Hereinafter, the diaper 1 will be described with reference to FIGS. 1 to 4B. The three constituent parts 10, 30a, 30b.

As shown in FIG. 2 and FIG. 4B, the absorbent body 10 is provided. There is: an absorbent core material 11; a surface sheet member 13 that covers the absorbent core member 11 from the skin side of the core material 11; and an absorbent core member 11 that covers the non-skin side of the core material 11 and becomes the absorbent body 10 The outer back sheet member 15.

The absorbent core material 11 is formed by laminating a liquid absorbing material The structure is capable of absorbing excrement such as urine. As the liquid absorbing material, for example, a liquid absorbing fiber such as pulp fibers can be used. Further, the absorbent core material 11 may contain, for example, a superabsorbent polymer as the liquid-absorbent granular material, or may contain a liquid-absorbent material other than the liquid-absorbent fiber and the liquid-absorbent granular material. Further, the absorbent core member 11 may be covered with a liquid permeable sheet (not shown) such as a thin paper.

The absorbent core material 11 of the present embodiment has: The abdomen side end portion 11a of the upper end portion in the longitudinal direction; and the back side end portion 11b as the lower end portion in the longitudinal direction in Fig. 2 . Further, between the abdomen side end portion 11a and the back side end portion 11b, a reduced diameter portion 11c having a width in the lateral direction narrower than the abdomen side end portion 11a and the back side end portion 11b is provided. Thereby, the absorptive core material 11 is configured such that it has a substantially hourglass clock shape in a plan view as shown in FIG.

The surface sheet member 13 covers the absorbent core material from the skin side A sheet-like member of 11, for example, a liquid-permeable non-woven fabric having a larger planar size than the absorbent core member 11 (refer to Fig. 4B). Further, the back sheet member 15 is a sheet-like member that covers the absorbent core member 11 from the non-skin side, and is more absorbent. A sheet having a larger planar size of the core material 11 is, for example, a two-layer structure in which a liquid-impermeable leakage preventing sheet 15a such as polyethylene or polypropylene and an exterior sheet 15b such as a nonwoven fabric are adhered to each other. Thin slices. Further, in a state where the absorbent core member 11 is sandwiched between the back sheet member 15 and the surface sheet member 13, the back sheet member 15 is prevented from leaking in a portion of the absorbent core member 11 that protrudes outward from the four sides. The sheet 15a is adhered to the surface sheet member 13 in a frame shape, whereby the absorbent body 10 is substantially formed.

Moreover, in the disposable diaper 1, as shown in Fig. 1, Fig. 2 and Fig. 4B It is shown that the so-called three-dimensional wrinkle LSG and the foot wrinkle LG are formed by the exterior sheet 15b. The three-dimensional wrinkles LSG are the leakage preventing wall portions that are provided at the respective end portions of the surface sheet member 13 in the lateral direction, and the foot wrapping wrinkles LG are formed at the feet of the respective foot circumference openings 1HL and 1HL of the disposable diaper 1. Peripheral expansion and contraction. The exterior sheet 15b will be described in more detail. First, as shown in Fig. 4B, the size of the outer sheet 15b in the lateral direction is sufficiently larger than that of the leakage preventing sheet 15a, that is, the outer sheet 15b is largely larger from the lateral sides of the leakage preventing sheet 15a in the lateral direction. protruding. In addition, the protruding portion 15bf is folded back toward the center side in the lateral direction as the folded-back position at the position of the end portion 10es of the absorbent body 10, and the foot-elastic member 17 such as a rubber thread is provided in the vicinity of the folded-back position. The foot circumference auxiliary elastic member 19 is fixed in the longitudinal direction in a state of being elongated in the longitudinal direction, whereby the foot circumference wrinkles LG are formed. Further, the foot circumference auxiliary elastic member 19 is not necessarily required, and the foot circumference wrinkles LG may be formed only by the foot circumference elastic members 17. Moreover, the folded portion 15bg further extends toward the center side in the lateral direction, and is joined to the end portion at a position covering the end portion of the surface sheet member 13 in the lateral direction. Joint The portion of the end portion functions as the base end portion LSGb of the three-dimensional wrinkle LSG, that is, a portion closer to the front end side in the lateral direction than the base end portion LSGb as the free end portion LSGf, which can be formed from the surface sheet member 13 Start. Further, at the front end portion of the free end portion LSGf, the LSG elastic member 18 such as a rubber thread is fixed in the longitudinal direction while being extended in the longitudinal direction. Therefore, the absorbent body 10 is bent in the longitudinal direction by the contraction of the longitudinal direction of the LSG elastic member 18, so that the side sheet member 13 side becomes the inner peripheral side, and the contraction by the LSG elastic member 18 is caused by the contraction. The force causes the free end portion LSGf to contract in the longitudinal direction and rises from the surface sheet member 13, whereby the free end portion LSGf functions as a three-dimensional wrinkle LSG.

Furthermore, although not shown, depending on the situation, it can be used on the surface sheet. A liquid permeable sheet such as a thin paper of the second sheet is placed between the member 13 and the absorbent core member 11 or between the back sheet member 15 and the absorbent core member 11.

As shown in Fig. 2, the abdominal side belt member 30a and the back side belt Each of the members 30b is a sheet member having a substantially rectangular shape in a plan view from a soft sheet such as a non-woven fabric. Here, as shown in FIG. 4A and FIG. 4B, the non-woven fabrics 31 and 32 are joined to form two sheets, and the abdominal side belt member 30a and the back side belt member 30b are formed. Further, the abdominal side belt member 30a and the back side belt member 30b cover the respective end portions 10ea and 10eb of the absorbent body 10 in the longitudinal direction from the non-skin side of the absorbent body 10, respectively, in the lateral center portions 30ac and 30bc. The central portions 30ac and 30bc of the belt members 30a and 30b are superposed on the respective end portions 10ea and 10eb and connected. Hehe. Furthermore, the two sheets of non-woven fabrics 31, 32 can also be of different sizes.

The absorbent body 10 faces the central portion of the abdominal side belt member 30a The 30ac and the central portion 30bc of the back side belt member 30b are overlapped, and the absorbent body 10 is not overlapped with the longitudinal end portion 30ae2 of the abdominal side belt member 30a and the longitudinal end portion 30be2 of the back side belt member 30b. Instead, the absorbent body 10 is superposed on the portions 30ac2 and 30bc2 (see FIG. 2) which are closer to the center in the longitudinal direction than the end portions 30ae2 and 30be2. In addition, the longitudinal end portions 30ae2 and 30be2 of the abdominal side belt member 30a and the back side belt member 30b are formed so as to extend over the entire length in the lateral direction, and the absorbent main body 10 does not have a band-like overlapping portion 30ae2 at all. 30be2. Further, the portions 30ae2 and 30be2 which do not overlap each other are part of the waist opening 1HB (Fig. 1) constituting the disposable diaper 1, and therefore, in the portions 30ae2, 30be2, the elastic members 35 to be described later are in the portions 30ae2, 30be2. The horizontal direction is continuously provided over a full length range.

As shown in FIG. 2, FIG. 4A and FIG. 4B, in the belt member 30a, A plurality of non-woven fabrics 31 and 32 of 30b are inserted into a plurality of elastic members 35, 35, ... such as rubber threads in the lateral direction, and are joined and fixed to the nonwoven fabric 31 in a state of being elongated in the lateral direction. 32, whereby the abdominal side belt member 30a and the back side belt member 30b are respectively stretched in the lateral direction. Further, the plurality of elastic members 35, 35, ... are arranged at intervals in the longitudinal direction and are arranged in the longitudinal direction. In the present specification, the elastic member 35 provided on the abdominal side belt member 30a is used as the abdominal side belt elastic member 35a, and the elastic member 35 provided on the back side belt member 30b is used as the back side belt elastic member 35b. The elastic member 35 is in addition to the thickness, the number of rows, and the longitudinal direction. The basic structure is roughly the same except for the detailed specifications of the configuration location. Therefore, in the following description, the abdominal side belt elastic member 35a provided on the abdominal side belt member 30a will be described, and the back side belt elastic member 35b provided on the back side belt member 30b will be omitted. Further, all the configurations of the back side belt member 30b are also omitted in the same manner.

Also, in the following, for the convenience of explanation, as shown in FIG. In addition, the abdomen side belt member 30a is divided into two areas AU and AD in the longitudinal direction, and the two areas AU and AD arranged in the longitudinal direction are referred to as [from the end side toward the center side in the longitudinal direction. Upper area AU], [lower area AD]. Furthermore, referring to FIG. 3, it can be seen that the regions AU and AD are both strip-shaped regions along the lateral direction.

The upper area AU is the waist opening constituting the disposable diaper 1 In the portion of 1HB, the upper region AU is a region that does not overlap the absorbent body 10 (absorbent core member 11) over the entire length in the lateral direction. In the upper region AU, the abdominal side belt elastic member 35a (the back side belt elastic member 35b) is continuously disposed from the one end portion to the other end portion in the lateral direction of the same region AU, and is elongated in the lateral direction. It is fixed in the state. Therefore, according to the abdominal side belt elastic member 35a, the upper region AU is stretched in the lateral direction over a substantially full length in the lateral direction, and the stretchability is the stretchability of the waist opening 1HB of the disposable diaper 1.

The lower area AD is heavy on the central portion ADc in the lateral direction The region of the portion 10p where the absorbent core 11 is present in the absorbent body 10 is fixedly stacked. Further, in the lower region AD, the portions ADe, ADe located on both sides of the central portion ADc are not heavy with the absorptive body 10. Stack.

Also, in the same parts ADe, ADe, the elastic member 35 is from One end portion in the lateral direction of the same portion ADe is continuously arranged over the entire length of the other end portion, and is fixed in a state of being elongated in the lateral direction. Thereby, the respective portions ADe and ADe are provided with stretchability in the lateral direction over a substantially full length range in the lateral direction.

Further, in the aforementioned central portion ADc, the elastic member 35 is horizontal Disposed non-continuously in the direction. Specifically, in this example, the end portions of the elastic member 35 are at the both end portions ADce and ADce in the lateral direction of the central portion ADc, but the central portion ADcc in the lateral direction of the central portion ADc does not exist. Since the elastic member 35 is such that the elastic member 35 is discontinuously arranged in the lateral direction in the central portion ADc. In the case where the elastic member 35 is not present in the central portion ADcc of the central portion ADc, since the same central portion ADcc is hardly stretched, the contraction of the central portion ADcc in the lateral direction is suppressed. As a result, the shrinkage of the absorbent core member 11 in the lateral direction (width direction) is also suppressed, so that the absorbent core member 11 can be prevented from wrinkles, and the skin side surface of the absorbent core member 11 can be maintained slightly flat. . As a result, it is possible to effectively prevent the liquid absorption of the absorbent core material 11 from being impeded, and it is also possible to suppress the leakage of excrement due to the generation of wrinkles.

Furthermore, in the present embodiment, the abdominal side belt member 30a is provided. In the lateral direction of the both ends ADce, the lateral length Wa of the portion where the abdominal side belt elastic member 35a is disposed is a portion where the back side belt elastic member 35b is disposed at both end portions ADce of the back side belt member 30b in the lateral direction. of The horizontal length Wb is longer. In other words, the length in the lateral direction of the portion of the abdominal side belt elastic member 35a that overlaps with the absorbent core member 11 is a portion in which the portion having the elastic force of the back side belt elastic member 35b overlaps with the absorbent core member 11. The length in the horizontal direction is longer. Such an arrangement effect will be described with reference to FIG. 5 which will be described later.

Moreover, as shown in FIG. 3, in the center of the lower area AD In the part ADc, an illustration sheet 40 in which an illustration such as an animal (not shown) is formed is provided. However, for the same reason as described above, wrinkles can be suppressed in the illustration sheet 40. Therefore, it becomes easy to see the illustration.

Moreover, as shown in FIG. 3, the non-back side belt member 30b is not The surface of the skin side is provided with a post-treatment belt 50. The post-treatment tape 50 is an elongated band-shaped member having an adhesive surface, and is fixed to the back side belt member 30b in a state in which the adhesive surface is folded inside. When the disposable diaper 1 is to be discarded, the folded diaper 1 is stretched in the longitudinal direction, and the folded post-treatment tape 50 is stretched to wind the adhesive side to the disposable diaper 1, whereby the disposable diaper can be used. 1 Keep it in a rounded state. Thereby, the disposable diaper 1 can be discarded without leaking excrement or the like adhering to the inside of the disposable diaper 1 (absorbent main body 10) to the outside.

<Regarding the configuration of the back side belt member 30b>

In the disposable diaper 1 of the present embodiment, by adjusting the joining position of the back side belt member 30b to the absorbent main body 10, when the disposable diaper is worn, the fit on the back side can be improved. Hereinafter, a description will be given using a comparative example.

Figure 5 is a view showing the absorbent body 10 of the present embodiment. A view showing the relationship between the abdominal side belt member 30a and the back side belt member 30b. Fig. 6 is a view for explaining the relationship between the absorbent body 10 of the comparative example, the abdominal side belt member 30a, and the back side belt member 30b.

As described above, in the disposable diaper 1, on the abdominal side belt member 30a In the lower region AD of the back side belt member 30b, ADe located on both sides in the lateral direction, and a plurality of abdominal side belt elastic members 35a (back side belt elastic members 35b) are arranged in the lateral direction. Further, the abdominal side belt elastic member 35a (the back side belt elastic member 35b) is disposed in the region ADe, and is disposed so as to be elastically provided in a state in which the both ends of the absorbent body 10 in the lateral direction (width direction) are elongated in the longitudinal direction. A part of the member 17 and the foot circumference auxiliary elastic member 19 intersect. Here, the length in the longitudinal direction of the region where the abdominal side belt elastic member 35a intersects the foot circumference elastic member 17 and the foot circumference auxiliary elastic member 19 is La. Similarly, the length in the longitudinal direction of the region where the back side belt elastic member 35b intersects the foot circumference elastic member 17 and the foot circumference auxiliary elastic member 19 is Lb.

In such an intersection area, when wearing the disposable diaper 1, The foot elastic member 17 and the foot circumference auxiliary elastic member 19 act to contract the absorbent body 10 in the longitudinal direction, and the absorbent body 10 is biased toward the abdomen side belt elastic member 35a (the back side belt elastic member 35b) The force acting in the horizontal direction (width direction). That is, the force that the absorbent body 10 (absorbent core material 11) is in close contact with the wearer's body is applied. Thereby, the absorbent body 10 (absorbent core material 11) is formed to cover a wider range of the wearer's body.

Furthermore, the foot elastic member 17 and the foot circumference auxiliary elastic member 19 is not disposed in the entire region of the longitudinal direction of the absorbent body 10 in the stretched state, but is disposed in an extended state in a predetermined region in the longitudinal direction. In the region where the elastic member is disposed in an extended state, the force of contracting the absorbent body 10 in the longitudinal direction acts, and the force of contracting the absorbent body 10 in the longitudinal direction is not performed in the region where the elastic member is not disposed in the extended state. effect. In the present specification, the longitudinal direction of the region in which the force contracting in the longitudinal direction acts is also referred to as the [effective length] of the foot elastic member 17 and the foot circumference auxiliary elastic member 19. In FIGS. 5 and 6, the portion indicated by the thick broken line corresponds to the effective length of the foot circumference elastic member 17 and the foot circumference auxiliary elastic member 19.

Further, in the present embodiment, the foot elastic member 17 is effective The length is at least longer than the longitudinal direction of the absorbent core 11 . In addition, the one end side in the longitudinal direction of the absorbent core member 11 is closer to the longitudinal direction than the abdomen-side end portion 11a, and the other end side in the longitudinal direction is closer to the longitudinal direction than the back-side end portion 11b. The elastic member 17 is surrounded. In other words, a region that acts by the contraction force of the foot elastic member 17 is formed until the outer side end portion 11a and the back side end portion 11b are closer to the outer side in the longitudinal direction. Thereby, it is possible to obtain longer La and Lb as much as possible. Therefore, the pulling effect in the lateral direction outer side by the back side belt elastic member 35b (abdominal side belt elastic member 35a) which will be described later can be increased.

As shown in Fig. 6, in the comparative example, the length of La in the intersection region on the abdominal side is substantially equal to the length of Lb in the intersection region on the back side. Specifically, in the region La of FIG. 6, the abdominal side belt elastic members 35a intersecting the effective elongated portion of the foot elastic member 17 are seven, in FIG. The region Lb has seven back side belt elastic members 35b that intersect the effective elongated portion of the foot elastic member 17. Therefore, in the comparative example, the force acting on the effective length of the foot elastic member 17 by the back side belt elastic member 35b (the force pulling outward in the lateral direction) acts substantially uniformly.

Also, in the case of the comparative example, the person wearing the disposable diaper When the foot is moved, the fit of the absorbent body 10 (absorbent core material 11) may be deteriorated on the back side. Since the person moves the foot mainly on the front side (abdomen side), the absorbent body 10 (absorbent core material 11) is pulled toward the front side (abdominal side) each time the wearer moves the foot, whereas Since the contraction force by the abdominal side belt elastic member 35a (the back side belt elastic member 35b) is constant, the wearer's buttocks are oriented in the lateral direction of the absorbent body 10 (absorbent core material 11). The force of the outer side pulling in the width direction is mainly dominated by the force of pulling on the abdomen side in the longitudinal direction, and the positional displacement of the absorbent body 10 (absorbent core material 11) is likely to occur. In this case, when the back side becomes heavy due to defecation or the like, the excrement leaks from the portion of the absorbent body 10 (absorbent core 11) toward the outside. In particular, when the wearer is an infant or a child, most of the diapers are worn in a sleeping position. Therefore, when a gap is formed between the underarms on the back side (hip side), the excrement easily leaks. Further, when the force of pulling outward in the lateral direction (width direction) is weak on the back side of the absorbent body 10 (absorbent core member 11), the wearer moves the foot and the end of the absorbent body 10 each time. Since the 10eb is easily displaced inward in the lateral direction (width direction), the absorbent body 10 (absorbent core member 11) is easily turned up and the buttocks are easily exposed.

On the other hand, as shown in FIG. 5, in this embodiment, the ratio is The length of La in the intersection area on the abdomen side is long, and the length of the Lb in the intersection area on the back side is long. In other words, the portion of the foot elastic member 17 (the foot circumference auxiliary elastic member 19) which is in a state of being elongated in the longitudinal direction (effective length) intersects with the back side belt elastic member 35b is a foot circumference elastic member 17 (foot circumference assistance) A portion (effective length) of the elastic member 19) in a state of being elongated in the longitudinal direction is larger than a region where the abdominal side belt elastic member 35a intersects. Specifically, in the region La of FIG. 5, the number of the abdomen side belt elastic members 35a intersecting with the effective extension portion of the foot elastic member 17 is seven, and in contrast, in the region Lb of FIG. 6, the foot circumference elastic member 17 The back side belt elastic members 35b intersecting the effective elongated portions are 10 more than seven. Therefore, the force that the absorbent body 10 (the absorbent core member 11), the foot elastic member 17, and the like are pulled outward in the lateral direction (width direction) by the back side belt elastic member 35b is higher than that of the abdominal side belt elastic member 35a. The force of pulling outward in the lateral direction (width direction) is greater. Thereby, in the disposable diaper 1 of this embodiment, the fit of the back side can be improved.

In this embodiment, even in the wearer of the disposable diaper 1 When the foot is moved, a force for pulling the absorbent body 10 (absorbent core member 11) toward the longitudinal side of the abdomen is generated, and the absorbent body 10 (absorbent core member 11) is oriented in the lateral direction (width direction) on the back side. Since the pulling force is large, the position of the absorbent body 10 (absorbent core member 11) is less likely to shift than in the case of the comparative example. In addition, although the force for pulling the absorbent main body 10 (absorbent core material 11) in the lateral direction (width direction) on the back side is large, the absorbent body 10 is not enlarged on the abdomen side (suction Since the retractable core material 11) pulls the force in the lateral direction (width direction), it is possible to maintain an appropriate fit feeling on the abdomen side, and it is difficult to prevent the wearer from moving the foot forward.

Furthermore, in the disposable diaper 1 of the present embodiment, by the belly The lateral length Wa of the portion of the side belt elastic member 35a in the stretched state (that is, the effective length portion of the abdominal side belt elastic member 35a) and the portion overlapping the absorbent core member 11 is made smaller than that of the back side belt elastic member 35b. The portion in the extended state (that is, the effective length portion of the back side belt elastic member 35b) and the portion in which the absorbent core member 11 overlaps are longer in the lateral direction length Wb (see FIG. 5), and the absorbent core member 11 can be adjusted in the lateral direction. The strength of the force pulled outward on the (width direction). The longer the elastic member is overlapped with the absorbent core member 11, the stronger the elastic core member 11 is drawn outward in the lateral direction (width direction). Therefore, as shown in the present embodiment, the elastic member is borrowed. The overlapping portion of the back side belt elastic member 35b and the absorbent core member 11 is shortened so that the force for pulling the absorbent core member 11 outward in the lateral direction (width direction) on the back side does not become excessively strong. Thereby, the fit of the absorbent body 10 of the buttocks can be maintained, and a certain space can be formed between the buttocks and the absorbent core material 11, and the excreted feces can be prevented from being diffused and held in the space. In addition, by the force which pulls the absorptive core material 11 directly to the outer side of the lateral direction (width direction) on the abdominal side, the absorptive core material 11 can be adhered to the body, and leakage of the excreted urine can be suppressed.

Moreover, in the disposable diaper 1 of this embodiment, each elastic structure is provided. a piece such that the foot elastic member 17 or the foot circumference auxiliary elastic member 19 is turned toward The expansion and contraction force during expansion and contraction in the longitudinal direction increases the expansion and contraction force when the back side belt elastic member 35b expands and contracts in the lateral direction. That is, each elastic member is disposed such that when the foot elastic member 17 and the foot circumference auxiliary elastic member 19 are adhered to the absorbent body 10, the ratio of the foot elastic member 17 and the foot circumference auxiliary elastic member 19 is increased. When the back side belt elastic member 35b is adhered to the back side belt member 30b, the ratio of the back side belt elastic member 35b is increased. Thereby, the force which expands the absorptive main body 10 (the absorptive core material 11) to the outer side in the lateral direction (width direction) becomes more powerful, and the absorbent body 10 is made to the hip area of a wearer etc. ( The absorbent core material 11) is widened in the lateral direction (width direction), and it is easy to suppress the leakage of excrement.

Moreover, in the disposable diaper 1 of this embodiment, when wearing a disposable diaper At this time, it is possible to suppress the feeling of discomfort in the skin feeling on the buttock side due to the post-treatment tape 50. In the disposable diaper 1, the longitudinal length Lb of the region where the back side belt elastic member 35b and the foot elastic member 17 intersect is longer than the longitudinal length La of the region where the abdominal side belt elastic member 35a and the foot elastic member 17 intersect. That is, the back side belt member 30b is larger than the overlapping portion of the absorbent body 10 in the longitudinal direction. Thereby, the position of the process belt 50 after being fixed to the non-skin side surface of the back side belt member 30b also becomes easy to overlap the position of the absorptive core material 11 in the thickness direction (refer FIG. 3). When the wearer wears the disposable diaper 1, since the absorbent core 11 having a thickness in the thickness direction is used between the wearer's skin (hip) and the post-treatment belt 50, the absorbent core is used. The material 11 functions as a cushioning body, so that the feeling of the post-treatment belt 50 is not easily transmitted to the wearer's skin (hip Department), can suppress the occurrence of discomfort.

===Other implementations ===

The embodiments of the present invention have been described above, but the embodiments are intended to facilitate the understanding of the present invention and are not intended to limit the scope of the present invention. Further, the present invention can be modified and improved without departing from the scope of the technical idea, and the present invention naturally includes equivalents thereof. For example, the following modifications can be made.

In the above-described embodiment, the elastic member 35a (35b) of the central portion ADc is used for the purpose of lowering the stretchability of the central portion ADc in the lateral direction of the lower region AD in the abdominal side belt member 30a (back side belt member 30b). Make it non-continuous. Further, as an example of the discontinuous elastic member, as shown in Fig. 3, the elastic members 35a (35b) are present at both end portions ADce and ADce in the lateral direction of the central portion ADc, but in the central portion ADc The elastic member 35a (35b) is not present in the central portion ADcc in the lateral direction, but is not limited thereto.

In other words, if the central portion ADc for reducing the stretchability of the central portion ADc of the lower region AD is provided with the elastic member 35a (35b) discontinuously, the central portion ADc of the central portion ADc may be used. There is an elastic member 35a (35b). Fig. 7 is a schematic plan view showing the example of the same. In addition, in FIG. 7, the non-skin side non-woven fabric 31 in the abdominal side belt member 30a is removed, and the elastic member 35a is exposed to the outside. In the example of Fig. 7, the elastic member 35a located at the central portion ADcc is in a state of being finely divided. Also, if it becomes the fine In the cut state, the elastic member 35a is substantially incapable of imparting stretchability to the central portion ADcc. Therefore, the elastic member 35a in the fine cut state may be present in the central portion ADcc. The length of the elastic member 35a in the thin-cut state is, for example, a length of 0 mm or more and 5 mm or less, and it is desirable to have a length of 0 mm or more and 3 mm or less. However, since the appearance is deteriorated when the fine elastic member 35a is present, it is desirable that the elastic member 35D is not present in the central portion ADcc (Fig. 3).

Moreover, regarding the back side belt member 30b, it is also possible in the lower area. The lateral direction of the AD is continuously arranged from the one end portion to the other end portion of the back side belt member 30b. In other words, the back side belt elastic member 35b may be continuously disposed (not shown) in the entire area in the lateral direction. Thereby, the contraction force in the lateral direction of the back side belt elastic member 35b acts on the center portion ADc. The center portion ADc of the back side belt member 30b is applied by the stretching force so that the foot circumference elastic member 17 (foot circumference auxiliary elastic member 19) and the back side belt member 30b are pulled to each other at the portion, and the back side belt member is pulled 30b is pressed against the wearer's buttocks. Thereby, the fit on the buttocks side can be improved. Further, even in this case, the abdominal side belt elastic member 35a provided on the abdominal side belt member 30a has a discontinuous portion in the central portion ADc.

In the foregoing embodiment, the horizontal portion of the lower portion AD of Fig. 3 The central portion ADc of the direction arranges the elastic member 35 in a discontinuous manner, but is not limited thereto. For example, the elastic member 35 may be disposed in the central portion ADc. That is, in the above-described example of Fig. 3, in the central portion ADc, the end portion of the elastic member 35 is applied to the positions of the respective end portions ADce and ADce in the lateral direction. However, the end of the elastic member 35 may not be applied to the position of the end portion ADce of the central portion ADc.

In the above embodiment, the outer sheet 15b and the belly are respectively The material of each of the side belt member 30a and the back side belt member 30b is a non-woven fabric, but is not limited to a non-woven fabric. For example, it may be a woven fabric or a sheet member other than the woven fabric. Incidentally, the outer sheet 15b may be omitted. In this case, the leakage preventing sheet 15a serves as an outer sheet of the absorbent body 10.

In the foregoing embodiment, the rubber wire is taken as an example of the elastic structure. The piece 35 is not limited thereto. For example, a strip rubber may be used as the elastic member 35, and a stretchable belt-shaped nonwoven fabric, a stretchable strip-shaped resin film, or the like may be used.

1‧‧‧paper diapers (absorbent articles)

1HB‧‧‧waist opening

1HL‧‧‧foot opening

10‧‧‧Absorbable ontology

11‧‧‧Absorbent core material

15‧‧‧Back sheet member

15b‧‧‧Outer sheet

30a‧‧‧Abdominal side strap members

30ae‧‧‧lateral edge

30b‧‧‧Back side belt members

30be‧‧‧lateral edge

40‧‧‧Illustrated sheet

LG‧‧‧Foot wrinkles

Claims (6)

An absorbent article comprising: an absorbent article having a longitudinal direction and a transverse direction intersecting the longitudinal direction, wherein the absorbent article has an absorbent body provided in the longitudinal direction for absorbing excrement; The abdomen side band member in which the central portion in the lateral direction is fixed to the one end portion of the absorbent body and the one end portion in the longitudinal direction of the absorbent body, and the abdomen side band The member having a different member is provided in the lateral direction, and the center portion in the lateral direction is fixed to the other end portion while covering the other end portion of the absorbent body in the longitudinal direction from the non-skin side of the absorbent body. The back side belt member, the absorbent body having an absorbent core material in which a liquid absorbing material is laminated, and a liquid impervious property in which the absorbent core material is covered from a non-skin side of the absorbent core material The leakage preventing sheet is disposed closer to the outer side in the lateral direction than the absorbent core member, and the foot elastic member is disposed along the longitudinal direction. The back side belt member is disposed on the back side belt elastic member that intersects with a part of the foot circumference elastic member along the lateral direction, and the abdominal side belt member is elastically attached to a portion of the abdominal side belt member that crosses a part of the foot circumference elastic member The member is disposed along the lateral direction, and the longitudinal length of the region in which the portion of the foot elastic member that is in the extended state intersects with the back side elastic member is longer than the portion of the foot elastic member that is in an extended state The aforementioned longitudinal direction length of the region where the abdominal side belt elastic members intersect is longer. The absorbent article according to claim 1, wherein the back side belt elastic member that intersects a part of the foot elastic member is in the lateral direction from one end portion to the other end portion of the back side belt member The range is configured continuously. The absorbent article according to claim 1, wherein the back side belt elastic member that intersects a part of the foot elastic member is in the lateral direction from one end portion to the other end portion of the back side belt member At least a portion which is discontinuous, and the abdominal side belt elastic member that intersects a part of the foot elastic member has at least a lateral direction from one end portion to the other end portion of the abdominal side belt member Become a discontinuous part. The absorbent article of claim 3, wherein the lateral length of the portion of the back side belt elastic member that is in an extended state overlapping the absorbent core material is larger than the length of the abdominal side belt elastic member. The portion in the extended state overlaps the aforementioned absorbent core material in the aforementioned lateral direction length. The absorbent article according to any one of claims 1 to 4, wherein the longitudinal length of the portion of the foot elastic member that is in an extended state is longer than the longitudinal length of the absorbent core. One end side of the portion in the longitudinal direction of the stretched elastic member is disposed at a position closer to the outer side in the longitudinal direction than the end portion on the abdomen side of the absorbent core member, and the leg elastic member is elongated. The other end side of the longitudinal direction of the portion of the state is disposed in comparison with the aforementioned absorption The back side end portion of the core material is closer to the outer side in the longitudinal direction. The absorbent article according to any one of claims 1 to 5, wherein the ratio of the leg elastic member to the longitudinal direction is increased when the foot elastic member is attached to the absorbent body. When the back side belt elastic member is attached to the abdominal side belt member, the ratio of the back side belt elastic member to the lateral direction is increased.