JP6397741B2 - Absorbent article and method for manufacturing absorbent article - Google Patents

Description

  The present invention relates to an absorbent article and a method for manufacturing the absorbent article.

  Conventionally, absorbent articles such as three-piece type disposable diapers have been widely used. The absorbent article includes an absorbent main body that absorbs excrement, a back band member that is fixed to one end of the absorbent main body in the longitudinal direction, and a ventral band that is fixed to the other end of the absorbent main body in the vertical direction. And both edge portions in the lateral direction of the dorsal side band member and both edge portions in the lateral direction of the ventral side band member are joined to each other.

JP 2011-78476 A

  In such a conventional absorbent article, when an absorptive main body absorbed excrement, there was a subject that an absorptive main body drooped greatly by the weight of the excrement.

  This invention is made | formed in view of the above problems, The place made into the objective is to suppress the sagging of an absorptive main body.

The main invention for achieving the above object is:
A longitudinal direction and a transverse direction intersecting the longitudinal direction,
An absorbent body that absorbs excreta;
A dorsal belt member fixed to one end of the absorbent body in the longitudinal direction;
A ventral belt member fixed to the other end in the longitudinal direction of the absorbent main body,
An absorbent article formed by joining both edges in the lateral direction of the back band member and both edges in the lateral direction of the ventral band member,
A separate band member different from the absorbent main body, the dorsal band member, and the ventral band member;
The separate band member is:
In a state where at least a part of either the back-side belt member or the ventral-side belt member overlaps, the longitudinal body is positioned closer to the center of the absorbent body than the one member, and Provided in a state in which the central portion in the lateral direction of the separate band member is inclined toward the central side so as to be located on the central side in the longitudinal direction of the absorbent main body continuously from both ends .
A joining portion for joining the one member and the separate belt member is provided,
The joint portion is arranged in a state of being inclined toward the center side so that the center portion in the lateral direction of the joint portion is continuously located on the center side in the longitudinal direction of the absorbent main body from both end portions. It is an absorptive article characterized by being.

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

  According to the present invention, it is possible to suppress sagging of the absorbent main body.

It is a perspective image figure of diaper 1 concerning this embodiment. It is a schematic plan view of the diaper 1 of an unfolded state. It is the schematic plan view which showed the junction part of the diaper. 3B is a schematic partial enlarged view of FIG. 3A. FIG. It is a schematic cross-sectional view of the diaper 1 of an unfolded state. It is a schematic longitudinal cross-sectional view of the diaper 1 of an unfolded state. It is a schematic plan view of the separate band member 40 provided in the diaper 1. FIG. 6 is a schematic plan view showing the position of a back side band joint 60 in a separate band member 40. 5 is a schematic plan view showing the position of the absorbent main body joint portion 62 in the separate band member 40. FIG. It is the schematic of the strip | belt-shaped sheet member 100 used as the separate band member 40 by attaching to the diaper 1. FIG. It is the schematic plan view which showed the position of the hot-melt-adhesive agent 102 used as the back | dorsal band junction part 60 by attaching the strip | belt-shaped sheet member 100 to the diaper 1. FIG. It is the schematic plan view which showed the position of the hot-melt-adhesive 102 used as the absorptive main body junction part 62 by attaching the strip | belt-shaped sheet member 100 to the diaper 1. FIG. It is an explanatory schematic diagram for explaining the definition of “meandering”. It is the schematic plan view which showed the junction part of the diaper 1 which concerns on 2nd embodiment. It is the schematic plan view which showed the position of the back | dorsal band junction part 60 in the separate band member 40 which concerns on 2nd embodiment.

  At least the following matters will become apparent from the description of the present specification and the accompanying drawings.

A longitudinal direction and a transverse direction intersecting the longitudinal direction,
An absorbent body that absorbs excreta;
A dorsal belt member fixed to one end of the absorbent body in the longitudinal direction;
A ventral belt member fixed to the other end in the longitudinal direction of the absorbent main body,
An absorbent article formed by joining both edges in the lateral direction of the back band member and both edges in the lateral direction of the ventral band member,
A separate band member different from the absorbent main body, the dorsal band member, and the ventral band member;
The separate band member is:
In a state where at least a part of either the back-side belt member or the ventral-side belt member overlaps, the longitudinal body is positioned closer to the center of the absorbent body than the one member, and Provided in a meandering state so that the central part in the lateral direction of the separate band member is located on the central side of the absorbent main body rather than the end part,
A joining portion for joining the one member and the separate belt member is provided,
The absorbent article, wherein the joint portion is arranged in a meandering state so that a central portion in the lateral direction of the joint portion is located closer to a central side of the absorbent main body than an end portion.

  According to such an absorbent article, it becomes possible to suppress the sagging of the absorbent main body.

Such an absorbent article,
The separate band member preferably has an elastic member arranged in a meandering state along the meandering separate band member.

  According to such an absorbent article, since the elastic force of the elastic member plays a role of lifting the absorbent main body, it is possible to further suppress the sagging of the absorbent main body.

Such an absorbent article,
It is desirable that the elastic member is provided within 20 mm from an end closer to the center of the absorbent main body among both ends in the longitudinal direction of the separate band member.

  According to such an absorbent article, it becomes possible to exert the effect of the elastic member from a position close to the center side of the absorbent main body (that is, the wearer's inseam), and further suppress the drooping of the absorbent main body. Is possible.

Such an absorbent article,
It is desirable that the separate band member is provided in the absorbent article by meandering a rectangular band-shaped sheet member.

  According to such an absorbent article, it is only necessary to prepare a sheet member having a simple shape, and it is possible to easily realize an absorbent article including a separate band member.

Such an absorbent article,
The degree of elongation of the belt-like sheet member in the long side direction is desirably smaller than the degree of elongation in the short side direction.

  According to such an absorbent article, the effect of providing the separate band member in a meandering state is more appropriately exhibited.

Such an absorbent article,
The said separate body located in the center side of the said absorptive main body rather than this one member in the said vertical direction in the state which at least one part overlapped with any one member of the said back side belt member and the said ventral side belt member Both edges in the lateral direction of the band member are
It is desirable that the back side belt member and the ventral side belt member are joined to the other member different from the one member.

  According to such an absorbent article, the position fixability of the separate band member is improved, and the separate band member can support the absorbent main body in cooperation with the other member. Therefore, it is possible to further suppress the sagging of the absorbent main body.

Such an absorbent article,
The separate band member overlaps the absorbent main body,
A joining portion for joining the absorbent main body and the separate band member at an overlapping portion of the absorbent main body and the separate band member;
It is desirable that the joining portion is arranged in a meandering state along the meandering separate band member.

  According to such an absorbent article, not only the joint for joining the one member and the separate belt member, but also the joint for joining the absorbent main body and the separate belt member meanders. Therefore, it becomes possible to further suppress the sagging of the absorbent main body.

Such an absorbent article,
The separate band member has an elastic member arranged in a meandering state along the meandering separate band member,
It is desirable that the stress of the elastic member is smaller in the central portion than in the lateral end portion of the separate band member.

  According to such an absorbent article, it is possible to suppress sagging of the absorbent main body while suppressing the absorber from shrinking due to the stress.

Such an absorbent article,
The absorbent main body has an absorbent body,
It is desirable that the absorbent body is substantially free of pulp and is made of an absorbent polymer.

  According to such an absorbent article, since an absorber becomes thin, an absorptive main body becomes easy to hang down with the weight of excrement. Therefore, the effect which suppresses drooping of an absorptive main body will be exhibited more appropriately.

Such an absorbent article,
The one member is fixed to the absorbent main body from the inside,
The separate band member is preferably fixed to the absorbent main body from the outside.

  According to such an absorbent article, the absorbent main body is sandwiched between the one member and the separate band member, the position fixability of the absorbent main body is improved, and the drooping of the absorbent main body is further suppressed. It becomes possible.

Such an absorbent article,
It is desirable that the rigidity of the separate band member is higher than the rigidity of the one member.

  According to such an absorbent article, it is possible to further suppress the sagging of the absorbent main body due to the higher rigidity of the separate band member.

Such an absorbent article,
The separate band member has an elastic member arranged in a meandering state along the meandering separate band member,
A plurality of elastic members, wherein the elastic member is disposed side by side in the longitudinal direction;
An elastic member non-installation region that is adjacent to the elastic member installation region in the longitudinal direction and is located at a position corresponding to the collar when the absorbent article is mounted, and wider than the elastic member installation region;
It is desirable to have

  According to such an absorbent article, it becomes possible to exhibit the effect by providing a separate belt member more appropriately.

Such an absorbent article,
The separate band member is a separate elastic member disposed in a meandering state along the meandering separate band member.
The one member has one elastic member arranged along the lateral direction,
It is desirable that the separate elastic member and the one elastic member intersect each other.

  According to such an absorbent article, the one elastic member and the separate elastic member can be directly linked to each other, and the sagging of the absorbent main body can be further suppressed.

Such an absorbent article,
It is desirable that the intersection where the separate elastic member and the one elastic member intersect is located on a joint for joining both members at the overlapping portion of the one member and the separate belt member.

  According to such an absorbent article, the linkage between the one elastic member and the separate elastic member is further strengthened, and the drooping of the absorbent main body can be further suppressed remarkably.

Such an absorbent article,
Having one elastic member different from the one elastic member that intersects the separate elastic member and the intersection is located on the joint,
It is desirable that the other one elastic member does not intersect the separate elastic member and the joint.

  According to such an absorbent article, the original function of the one member can be reliably exhibited.

Next, having a vertical direction and a horizontal direction intersecting the vertical direction,
An absorbent body that absorbs excreta;
A dorsal belt member fixed to one end of the absorbent body in the longitudinal direction;
A ventral belt member fixed to the other end in the longitudinal direction of the absorbent main body,
Formed by joining both edges in the lateral direction of the back band member and both edges in the lateral direction of the ventral band member;
A separate band member different from the absorbent main body, the dorsal band member, and the ventral band member;
The separate band member is:
In a state where at least a part of either the back-side belt member or the ventral-side belt member overlaps, the longitudinal body is positioned closer to the center of the absorbent body than the one member, and An absorbent article manufacturing method for forming an absorbent article provided in a meandering state so that a central portion of the separate band member in the lateral direction is located closer to a central side of the absorbent main body than an end portion. ,
Applying an adhesive along the long side direction to a rectangular belt-shaped sheet member;
Forming the separate belt member by meandering the belt-like sheet member and attaching it to the one member;
The manufacturing method of the absorbent article characterized by having.

  According to such a method for manufacturing an absorbent article, it is possible to realize a meandering joint portion without applying a meandering adhesive. Therefore, it is possible to easily realize a meandering joint.

A method of manufacturing such an absorbent article,
Providing the elastic member along the long side direction within 10 mm from the end in the short side direction of the belt-like sheet member;
When the separate band member is formed by meandering the belt-like sheet member and attaching it to the one member, the ends in the short side direction are both ends in the longitudinal direction of the separate band member. It is desirable to attach so that it may become an end close | similar to the center of the said absorptive main body.

  According to such a method for manufacturing an absorbent article, it is possible to accurately attach the elastic member near the end closer to the center of the absorbent main body.

=== About the disposable diaper according to the present embodiment ===
FIG. 1 is a perspective image diagram of a diaper 1 according to the present embodiment. FIG. 2 is a schematic plan view of the diaper 1 in the unfolded state. FIG. 3A is a diagram in which a back-side band joint portion 60 and an absorbent main body joint portion 62 are added to the diaper 1 of FIG. 2, and is a schematic plan view showing the joint portion of the diaper 1. FIG. 3B is a schematic partial enlarged view of FIG. 3A. FIG. 4 is a schematic cross-sectional view of the diaper 1 in the unfolded state. FIG. 5 is a schematic longitudinal sectional view of the unfolded diaper 1. 6 is a diagram in which only the separate band member 40 is taken out from FIG. 2, and is a schematic plan view of the separate band member 40 provided in the diaper 1. FIG. 7 is a diagram in which the back band joining portion 60 is added to the separate band member 40 of FIG. 6, and is a schematic plan view showing the position of the back side band joining portion 60 in the separate band member 40. FIG. 8 is a diagram in which the absorbent main body joining portion 62 is added to the separate band member 40 of FIG. 6, and is a schematic plan view showing the position of the absorbent main body joining portion 62 in the separate band member 40.

  A disposable diaper (hereinafter also simply referred to as diaper 1) as an example of an absorbent article according to the present embodiment is a disposable diaper mainly intended for wearing by adults, and is used particularly in a nursing facility or the like.

  In the following description, the longitudinal direction, the lateral direction, and the thickness direction of the diaper 1 are simply referred to as “vertical direction”, “lateral direction”, and “thickness direction”, respectively. Regarding the thickness direction, the side in contact with the wearer is also referred to as “skin side” or “inside”, and the opposite side is also referred to as “non-skin side” or “outside”. In the following description, “lateral direction” is also referred to as “width direction”.

  The diaper 1 according to the present embodiment has a vertical direction, a horizontal direction, and a thickness direction as three directions intersecting (orthogonal) with each other. Moreover, the diaper 1 is what is called a 3 piece type, and has three components. That is, this diaper 1 has an absorbent main body 10 that is applied to the crotch part of the wearer and absorbs excrement such as urine as the first part, and the abdomen part of the wearer as the second part. It has an abdominal band member 20 that covers it, and a back band member 30 that covers the back side of the wearer as a third part.

  Furthermore, in the diaper 1 according to the present embodiment, as the fourth part, a separate band member 40 different from the absorbent main body 10, the ventral band member 20, and the back band member 30 is included in the three parts. It has been added. The separate band member 40 is provided to suppress the sagging of the absorbent main body 10 (described in detail later), and either one of the back band member 30 and the ventral band member 20 (this embodiment) In a form, it is located in the center side of the absorptive main body 10 rather than this one member (back side belt member 30) in the vertical direction in the state which at least partially overlapped with the back side belt member 30).

  As described above, in the present embodiment, the separate band member 40 is provided for the dorsal band member 30, but the separate band member 40 is provided for the ventral band member 20. May be. That is, the separate band member 40 may be positioned on the center side of the absorbent main body 10 with respect to the ventral band member 20 in the longitudinal direction in a state where at least a part of the separate band member 40 overlaps the ventral band member 20. Further, two separate band members 40 may exist, and each separate band member 40 may be provided for each of the back band member 30 and the ventral band member 20.

  In the deployed state of FIG. 2, the dorsal band member 30 and the ventral band member 20 on which the separate band members 40 are stacked are arranged in parallel with a vertical interval therebetween, and the absorbent main body 10 is between them. It is being handed over. And the back | dorsal band member 30 is fixed to the one end part 10a in the vertical direction of the absorptive main body 10, and the ventral | abdominal band member 20 is being fixed to the other end part 10b, and the external appearance has comprised the planar view substantially H shape.

  And from this state, the absorptive main body 10 is folded in half with the substantially central portion in the longitudinal direction (that is, the longitudinal direction) as the folding position. When the ventral band member 20 and the dorsal band member 30 that are opposed to each other in the folded state are joined and connected, the band members are formed in an annular shape. That is, the diaper 1 is formed by joining both edge portions 30 a in the lateral direction of the back band member 30 and both edge portions 20 a in the lateral direction of the ventral band member 20. Thereby, it becomes the diaper 1 of the wearing condition in which the trunk periphery opening 1a and a pair of leg periphery opening 1b as shown in FIG. 1 were formed.

  Hereinafter, the four components of the diaper 1, that is, the absorbent main body 10, the ventral side band member 20, the back side band member 30, and the separate band member 40 will be described.

  The absorbent main body 10 (see FIGS. 2 to 5) corresponds to the wearer's crotch (inseam) and is intended to absorb excrement such as urine. As shown in FIG. 2, the absorbent main body 10 has a rectangular shape in plan view, and is provided so that the longitudinal direction (long side direction) is along the longitudinal direction.

  The absorbent main body 10 includes an absorber 11, an absorber upper sheet member 12, an absorber lower sheet member 13, a top sheet member 14, and a back sheet member 15.

  The absorbent body 11 is a member (absorbent core) formed by laminating liquid absorbent materials, and can absorb excrement such as urine. The absorber 11 according to the present embodiment is a so-called SAP sheet. Here, the absorbent body 11 of the SAP sheet is substantially free of pulp (here, “substantially free of pulp” means that the weight of the pulp is more than 10% of the total weight of the absorbent body 11). This means an absorber 11 made of an absorbent polymer. Note that the SAP sheet according to the present embodiment does not contain any pulp.

  As shown in FIG. 4, the absorbent upper sheet member 12 and the absorbent lower sheet member 13 are coated with the absorbent body 11 sandwiched between the upper side (skin side) and the lower side (non-skin side) in the thickness direction. It is a sheet (nonwoven fabric).

  As shown in FIG. 4, the top sheet member 14 is a sheet-like member that covers the absorber 11 sandwiched between the absorber upper sheet member 12 and the absorber lower sheet member 13 from the upper side (skin side). 11 is a liquid-permeable nonwoven fabric having a plane size larger than 11.

  As shown in FIG. 4, the back sheet member 15 is a sheet-like member that covers the absorber 11 sandwiched between the absorber upper sheet member 12 and the absorber lower sheet member 13 from the lower side (non-skin side). The back sheet member 15 is a sheet having a plane size larger than that of the absorbent body 11 and has a two-layer structure including a liquid-impermeable leak-proof sheet 15a such as polyethylene or polypropylene and an exterior sheet 15b such as a nonwoven fabric. It is.

  Further, as shown in FIG. 2, leg gathers LG (leg extension parts) that extend and contract in the longitudinal direction are provided on portions located on both sides in the width direction of the absorbent body 10, that is, the pair of side flaps 16. Are provided. Between the leak-proof sheet 15a and the exterior sheet 15b, an elastic member that expands and contracts along the vertical direction (specifically, thread rubber. For convenience, it is called the absorbent main body thread rubber 17. In the figure, it is indicated by a broken line) The leg gathers LG are configured by the absorbent main body rubber thread 17 imparting stretchability to the side flaps 16. Four absorbent main body rubbers 17 of the side flaps 16 are provided on one side in the width direction of the absorbent main body 10 and four on the other side.

  The ventral band member 20 (see FIGS. 2 to 5) is a sheet-like member corresponding to the wearer's abdomen. As shown in FIG. 2, the ventral band member 20 has a rectangular shape in plan view, and is provided such that the longitudinal direction (long side direction) is along the lateral direction. The ventral belt member 20 is formed by overlapping and joining two nonwoven fabrics 21. In the present embodiment, as illustrated in FIG. 2, an illustration sheet 22 on which an illustration (not shown) such as a floral pattern is formed is provided between the two nonwoven fabrics 21.

  The ventral belt member 20 is overlapped and fixed to the other end portion 10b in the longitudinal direction of the absorbent main body 10. The portion of the ventral band member 20 that is overlapped with the absorbent main body 10 is provided at the center of the ventral band member 20 in the lateral direction and on the side closer to the center of the absorbent main body 10 of the ventral band member 20 in the vertical direction. ing. That is, the absorptive main body 10 is not superimposed on the both ends of the abdominal band member 20 in the lateral direction and the side farther from the center of the absorptive main body 10 in the longitudinal direction. In the present embodiment, the ventral belt member 20 is overlaid on the absorbent main body 10 so as to cover the absorbent main body 10 from the skin side (inner side). That is, the ventral belt member 20 is fixed to the absorbent main body 10 from the skin side (inner side).

  As shown in FIGS. 2 and 5, the ventral band member 20 is an elastic member (specifically, thread rubber. For convenience, it is referred to as a ventral band thread rubber 23 in the figure). A plurality (18 in the present embodiment) are arranged (shown by broken lines). The ventral belt rubber 23 is interposed between the two nonwoven fabrics 21 and bonded and fixed to the two nonwoven fabrics 21. Further, each of the plurality of ventral side band rubbers 23 is provided from one end to the other end of the ventral side band member 20 in the lateral direction, and these ventral side band rubbers 23 are arranged in the vertical direction. It has become. As a result, the ventral belt member 20 is provided with lateral stretchability and imparts stretchability to the waist opening 1 a of the diaper 1.

  A sheet-like cover member 50 (nonwoven fabric) for enhancing the pulling strength is provided at the boundary between the ventral belt member 20 and the absorbent main body 10.

  The dorsal belt member 30 (see FIGS. 2 to 5) is a sheet-like member corresponding to the wearer's back and buttocks. As shown in FIG. 2, the back band member 30 has a rectangular shape in plan view, and is provided such that the longitudinal direction (long side direction) is along the lateral direction. The back band member 30 is formed by overlapping and joining two nonwoven fabrics 31. In the present embodiment, as shown in FIGS. 2 and 4, an illustration sheet 32 on which an illustration (not shown) such as a floral pattern is formed is provided between the two nonwoven fabrics 31.

  The back side belt member 30 is overlapped and fixed to one end portion 10 a in the longitudinal direction of the absorbent main body 10. The portion of the back band member 30 that is overlapped with the absorbent main body 10 is provided on the central portion of the back band member 30 in the lateral direction and on the side closer to the center of the absorbent main body 10 of the back side band member 30 in the vertical direction. ing. In other words, the absorbent main body 10 is not overlapped on both ends of the back band member 30 in the lateral direction and on the side far from the center of the absorbent main body 10 of the back band member 30 in the vertical direction. In the present embodiment, the back band member 30 is stacked on the absorbent main body 10 so as to cover the absorbent main body 10 from the skin side (inner side). That is, the back band member 30 is fixed to the absorbent main body 10 from the skin side (inside).

  2 and 5, the back side band member 30 is an elastic member (specifically, thread rubber. For convenience, it is referred to as a back side band thread rubber 33). A plurality (16 in the present embodiment) are arranged (shown by broken lines). The back side band rubber 33 is interposed between the two nonwoven fabrics 31 and bonded and fixed to the two nonwoven fabrics 31. Further, each of the plurality of backside band rubbers 33 is provided from one end to the other end of the backside band member 30 in the lateral direction, and these backside band rubbers 33 are arranged in the longitudinal direction. It is in a state. As a result, the dorsal belt member 30 is provided with a lateral stretchability and imparts a stretchability to the waist opening 1 a of the diaper 1.

  A sheet-like cover member 50 (nonwoven fabric) for enhancing the pulling strength is provided at the boundary between the back band member 30 and the absorbent main body 10.

  The separate band member 40 (see FIGS. 2 to 11) is a sheet-like member for suppressing the drooping of the absorbent main body 10. As shown in FIG. 2, the separate band member 40 is overlapped with the back band member 30, and in the longitudinal direction, the center side of the absorbent main body 10 with respect to the back band member 30 (in other words, the ventral band member 20 side). ). Further, as shown in FIGS. 2 and 6, the separate band member 40 is provided so that the longitudinal direction is generally along the lateral direction, as in the case of the back side band member 30. The central portion 40a in the lateral direction of the member 40 is provided in a meandering state so as to be positioned closer to the central side of the absorbent main body 10 than the end portion 40b (in other words, the ventral belt member 20 side).

  This meandering state is realized at any position in the longitudinal direction of the separate band member 40 as shown in FIG. That is, not only the end portion of the separate band member 40 in the longitudinal direction that is closer to the center of the absorbent main body 10 (referred to as a near end portion 40c for convenience) but also the end portion that is farther away (for convenience). Also, in the distal end portion 40d, the central portion 40a meanders so as to be positioned closer to the central side of the absorbent main body 10 than the end portion 40b (in other words, the ventral belt member 20 side).

  The separate band member 40 is formed by overlapping and joining two nonwoven fabrics 41. In the present embodiment, the two nonwoven fabrics 41 have the same length in the horizontal direction, but have different lengths in the vertical direction as shown in FIG. However, the length in the vertical direction may be the same.

  As described above, the separate band member 40 is overlaid on the back side band member 30, but as shown in FIG. 5, the separate band member 40 is overlaid on the back side band member 30 so as to cover the back side band member 30 from the non-skin side (outside). It has been. Moreover, since the absorptive main body 10 is located in the non-skin side (outside) of the back | dorsal belt member 30, in the overlapping part 70 of the separate band member 40 and the back | dorsal belt member 30, both are absorptive main bodies 10. And a portion overlapping each other without the absorbent main body 10 (overlapping) (the overlapping portion 70 is located at the central portion in the lateral direction of the overlapping portion 70, referred to as the first overlapping region A1). Located at both ends of the portion 70 in the lateral direction, referred to as a second overlapping region A2. That is, in the first overlapping region A1, the separate band member 40 and the back band member 30 overlap with the absorbent main body 10 sandwiched therebetween, and in the second overlapping region A2, the separate band member 40 and It overlaps with the back side belt member 30 in the state which contacted.

  The overlapping portion 70 is also arranged in a meandering state along the meandering separate band member 40 as shown in FIG. 3A. That is, the first overlapping region A1 is provided in a meandering state so as to be located closer to the center side of the absorbent main body 10 than the second overlapping region A2 (in other words, the ventral belt member 20 side). Note that the overlapping portion 70 is provided from one end to the other end in the lateral direction of the back band member 30 and the separate band member 40, and is generally provided along the horizontal direction.

  Further, as shown in FIGS. 3A, 3B, and 7, the overlapping portion 70 has a joint portion (“the one member and the separate band for joining the back band member 30 and the separate band member 40”). Corresponding to a “joint for joining the members”. For convenience, it is referred to as a dorsal band joint 60 and is shown with spots in FIG. The back side band joining portion 60 is provided with a hot melt adhesive as an example of an adhesive, and the back side band member 30 and the separate band member 40 are joined by the hot melt adhesive.

  In addition, the back side belt | band | zone junction part 60 is provided with the 1st back side junction part 60a located in 1st overlap area | region A1, and the 2nd back side junction part 60b located in 2nd overlap area | region A2. In the second back side joint portion 60b, the back side belt member 30 and the separate belt member 40 are directly joined by a hot melt adhesive, but in the first back side joint portion 60a, the back side belt member 30 is joined. And the separate band member 40 are indirectly joined by a hot melt adhesive. That is, as described above, in the first overlapping region A1, the absorbent main body 10 is sandwiched between the separate band member 40 and the back band member 30, so the hot melt adhesive is separated from the separate band member 40 and the absorbent main body. 10, the separate band member 40 is joined to the back band member 30 via the absorbent main body 10.

  And this back | dorsal band junction part 60 is also arrange | positioned in the state meandered along the meandering separate band member 40, as shown to FIG. 3A. In other words, the dorsal band joint portion 60 has a central portion (in other words, the first dorsal joint portion 60a) in the lateral direction of the dorsal band joint portion 60 as an end portion (in other words, the second dorsal side joint portion 60b). It is provided in a meandering state so as to be located on the center side of the absorbent main body 10 (in other words, on the side of the ventral belt member 20). In addition, the back side belt | band | zone joining part 60 is provided ranging from the one end in the said horizontal direction of the back side belt member 30 or the separate band member 40 to the other end, and is provided substantially along the said horizontal direction.

  As described above, in the first overlapping region A1, since the separate band member 40 overlaps the back band member 30 via the absorbent main body 10, the separate band member 40 itself (when viewed from the absorbent main body 10) It will overlap with the absorbent main body 10 itself). Moreover, as shown in FIG. 2, the area | region (3rd side which adjoins 1st overlap area | region A1, and is located in the center side of the absorptive main body 10 rather than 1st overlap area | region A1 (in other words, the abdominal band member 20 side). The separate band member 40 also overlaps the absorbent main body 10 in the overlapping region A3). That is, as the overlapping portion 72 between the absorbent main body 10 and the separate band member 40, the first overlapping region A1 and the third overlapping region A3 exist. As apparent from FIG. 2, the length of the overlapping portion 72 in the vertical direction is longer than the length of the overlapping portion 70 in the vertical direction, and the length of the overlapping portion 72 in the horizontal direction is larger than the length of the overlapping portion 70 in the horizontal direction. Is also shorter.

  The overlapping portion 72 is also arranged in a meandering state along the meandering separate band member 40 as shown in FIG. 3A. In other words, the overlapping portion 72 is provided in a meandering state so that the central portion in the lateral direction is located closer to the central side of the absorbent main body 10 than the end portion (in other words, the ventral belt member 20 side). The overlapping portion 72 is provided from one end to the other end in the lateral direction of the absorbent main body 10 and is provided so as to be substantially along the lateral direction.

  Further, as shown in FIGS. 3A, 3B and 8, the overlapping portion 72 has a joint portion for joining the absorbent main body 10 and the separate band member 40 (“the absorbent main body and the separate band). Corresponding to a “joint for joining the members”. For the sake of convenience, it is referred to as an absorbent main body joint 62, and is shown with spots in FIG. The absorbent main body joining portion 62 is provided with a hot melt adhesive, and the absorbent main body 10 and the separate band member 40 are directly joined by the hot melt adhesive.

  And this absorptive main body junction part 62 is also arrange | positioned in the state meandered along the meandering separate band member 40, as shown to FIG. 3A. That is, the absorbent main body joint portion 62 is positioned such that the central portion in the lateral direction of the absorbent main body joint portion 62 is located closer to the central side of the absorbent main body 10 than the end portion (in other words, the ventral belt member 20 side). It is provided in a meandering state. In addition, the back side belt | band | zone junction part 60 is provided ranging from the one end part in the said horizontal direction of the absorptive main body 10 to the other end part, and is provided so that the said horizontal direction may be followed in general. The separate band member 40 is fixed to the absorbent main body 10 from the outside (non-skin side).

  In addition, it has already been described that both edges 30a in the lateral direction of the back band member 30 are joined to both edges 20a in the lateral direction of the ventral band member 20, but both edges in the lateral direction of the separate band member 40 have been described. The portion 42 is also joined to both edge portions 20 a in the lateral direction of the ventral band member 20. In the present embodiment, only a part of the both edge portions 42 (the end portion 42a far from the center of the absorbent main body 10 at both ends in the longitudinal direction of the separate band member 40). However, the both edge portions 42 may be bonded to the ventral belt member 20 from one end portion to the other end portion of the separate band member 40 in the longitudinal direction.

  2, 5, and 6, the separate band member 40 is a separate elastic member (specifically, a thread rubber. For convenience, it is referred to as a separate band thread rubber 43. A plurality of (in the present embodiment, five) are arranged. The separate band thread rubber 43 is interposed between the two nonwoven fabrics 41 and bonded and fixed to the two nonwoven fabrics 41. Further, each of the plurality of separate band thread rubbers 43 is provided from one end to the other end of the separate band member 40 in the lateral direction, and further, these separate band thread rubbers 43 are arranged in the longitudinal direction. Are in a line-up state.

  The separate band thread rubber 43 is also arranged in a meandering manner along the meandering separate band member 40. That is, the separate band thread rubber 43 is positioned such that the central portion in the lateral direction of the separate band thread rubber 43 is located closer to the center side of the absorbent main body 10 than the end portion (in other words, the ventral band member 20 side). It is provided in a meandering state. Therefore, the separate band thread rubber 43 expands and contracts along the meandering direction (generally the lateral direction), and the separate band member 40 is given elasticity in the meandering direction (generally the lateral direction).

  The stress of the separate band thread rubber 43 (in other words, the tension of the separate band thread rubber 43. That is, the stress of the separate band member 40 in the expansion and contraction direction of the separate band thread rubber 43) is the separate band member. 40 is smaller in the central portion 40a than the end portion 40b in the lateral direction (the reason for this will be described later). In the present embodiment, when attaching the separate band thread rubber 43 to the separate band member 40, the separate band thread rubber 43 is attached in a loosened state at the central portion 40a rather than the end portion 40b (end portion). 40b has a separate belt thread 43 stretched and attached). This realizes a stress difference between the central portion 40a and the end portion 40b.

  In the present embodiment, as described above, the five separate band thread rubbers 43 are arranged in the vertical direction, but the five separate band thread rubbers 43 are not arranged at an equal pitch. Absent. That is, a plurality of (four) separate band thread rubbers 43 are provided side by side in the longitudinal direction, and the thread rubber placement area 44 in the longitudinal direction. A thread rubber non-installation area 45 (corresponding to an elastic member non-installation area) that is adjacent and is located at a position corresponding to the heel when the diaper 1 is mounted is provided. ing. In the vertical direction, only one separate band rubber thread 43 is disposed on the side opposite to the thread rubber installation area 44 when viewed from the thread rubber non-installation area 45.

  In addition, the thread rubber installation area 44 (four separate band thread rubbers 43) is provided in the above-mentioned near end portion 40c. Specifically, at least one of the separate band thread rubbers 43 is an end closer to the center of the absorbent main body 10 among the both ends in the longitudinal direction of the separate band member 40 (near end 40e for convenience). It is provided within 20 mm.

  As described above, in the present embodiment, the separate band member 40 meanders so that the central portion 40a in the lateral direction of the separate band member 40 is located closer to the center side of the absorbent main body 10 than the end portion 40b. However, the dorsal band joining portion 60, the absorbent main body joining portion 62, and the separate band thread rubber 43 are also arranged in a meandering manner along the meandering separate band member 40. The reason for this form will be described with reference to FIGS. FIG. 9 is a schematic plan view of the belt-like sheet member 100 that becomes the separate belt member 40 by being attached to the diaper 1. FIG. 10 is a schematic plan view showing the position of the hot-melt adhesive 102 that becomes the back-side band joint portion 60 when the band-shaped sheet member 100 is attached to the diaper 1. FIG. 11 is a schematic plan view showing the position of the hot-melt adhesive 102 that becomes the absorbent main body joining portion 62 when the belt-like sheet member 100 is attached to the diaper 1.

  The separate band member 40 is provided in the diaper 1 by meandering the rectangular band-shaped sheet member 100 shown in FIG. That is, the rectangular belt-like sheet member 100 shown in FIG. 9 is meandered and joined to the back-side belt member 30 and the absorbent main body 10 to form a separate belt member 40 shown in FIG. 2 or FIG. .

  The belt-like sheet member 100 is formed by overlapping and joining two rectangular nonwoven fabrics 41. In the belt-like sheet member 100, due to the fiber orientation of the nonwoven fabric 41, the degree of elongation in the long side direction (in other words, the ease of elongation) of the belt-like sheet member 100 is smaller than the degree of elongation in the short side direction. (That is, the direction of the short side is easier to extend than the direction of the long side).

  Further, as shown in FIG. 9, the five separate band rubbers 43 are provided on the belt-shaped sheet member 100 along the long side direction (longitudinal direction) of the belt-shaped sheet member 100. Therefore, when the belt-like sheet member 100 is attached to the diaper 1, the separate band thread rubber 43 is disposed in a meandering state along the meandering separate band member 40.

  Further, as shown in FIGS. 10 and 11, in order to join the belt-like sheet member 100 to the back-side belt member 30 and the absorbent main body 10, the hot melt adhesive 102 is applied in the long side direction (longitudinal direction) of the belt-like sheet member 100. ) Is applied to the belt-like sheet member 100 so as to be along. Therefore, when the belt-like sheet member 100 is attached to the diaper 1, the back-side belt joining portion 60 and the absorbent main body joining portion 62 are arranged in a meandering state along the meandering separate belt member 40. .

  That is, before attaching the strip-shaped sheet member 100 to the diaper 1, as shown in FIGS. 10 and 11, the hot-melt adhesive 102 is applied linearly along the long side direction to the rectangular strip-shaped sheet member 100. And when attaching the strip | belt-shaped sheet | seat member 100 to the diaper 1, the strip | belt-shaped sheet | seat member 100 is made to meander and it overlaps | attaches so that the hot-melt-adhesive 102 may contact the back | dorsal band member 30 and the absorptive main body 10. FIG. At this time, the portion to which the hot melt adhesive 102 is applied meanders along the meandering separate band member 40 to become the meandering back side band joining portion 60 and the absorbent main body joining portion 62 described above. In this way, the separate band member 40 is formed from the band-shaped sheet member 100.

  In addition, at least one of the five separate band thread rubbers 43 is provided within 10 mm from the end in the short side direction of the belt-shaped sheet member 100. That is, before attaching the belt-shaped sheet member 100 to the diaper 1, the separate belt rubber 43 is provided along the long side direction within 10 mm from the end in the short side direction of the belt-shaped sheet member 100. Then, when the separate belt member 40 is formed by meandering the belt-like sheet member 100 and attaching it to the back belt member 30, the end in the short side direction is the longitudinal direction of the separate belt member 40. It attaches so that it may become the near end 40e nearer to the center of the said absorptive main body among both ends.

=== Effectiveness of Diaper 1 According to this Embodiment ===
As described above, the diaper 1 according to the present embodiment has a longitudinal direction and a transverse direction that intersects the longitudinal direction, and absorbs excrement, and the longitudinal direction of the absorbent body 10. A dorsal band member 30 fixed to one end 10a in the direction and an abdominal band member 20 fixed to the other end 10b in the longitudinal direction of the absorbent main body 10, and the dorsal band member 30 in the lateral direction The diaper 1 was formed by joining both edge portions 30a and both edge portions 20a of the ventral belt member 20 in the lateral direction. Moreover, it has the separate band member 40 different from the absorptive main body 10, the back side band member 30, and the abdominal side band member 20, and this separate band member 40 is either the back side band member 30 or the ventral side band member 20. One member (in this embodiment, the dorsal belt member 30) is positioned at least partially on the center side of the absorbent main body 10 in the longitudinal direction than the one member, and The central part 40a in the lateral direction of the body band member 40 is provided in a meandering state so as to be positioned closer to the central side of the absorbent main body 10 than the end part 40b. Further, a dorsal band joining part 60 for joining the one member and the separate band member 40 is provided, and the dorsal band joining part 60 has an end at the center in the lateral direction of the dorsal band joining part 60. It has been arranged in the meandering state so that it may be located in the center side of the absorptive main body 10 rather than the part. Therefore, it becomes possible to suppress the sagging of the absorbent main body 10.

  Conventionally, an absorbent main body that absorbs excrement, a back band member fixed to one end portion in the longitudinal direction of the absorbent main body, and a ventral band member fixed to the other end portion in the vertical direction of the absorbent main body, In addition, a so-called three-piece type diaper formed by joining both edges in the lateral direction of the back band member and both edges in the lateral direction of the ventral band member is widely used. In such a diaper, an absorptive main body and a back side band member (abdominal side band member) are separate members, and the absorptive main body is suspended by the back side band member (abdominal side band member). And when an absorptive main body absorbed excrement, such as urine, the subject that an absorptive main body drooped greatly by the weight of the excretion occurred.

  On the other hand, in the present embodiment, a separate band member 40 is prepared separately, and the separate band member 40 is arranged such that the central portion 40a in the lateral direction is closer to the central side of the absorbent main body 10 than the end portion 40b. It was decided to be provided in a meandering state. Therefore, the separate band member 40 has a force (ie, in FIG. 2) to return from the meandering state (state as shown in FIG. 6) to the original state (rectangular state as shown in FIG. 9) not meandering. (Force indicated by a white arrow) is generated, and this force is a force for suppressing the sagging of the absorbent main body 10. That is, when the absorbent main body 10 absorbs excrement such as urine and becomes heavier, the absorbent main body 10 has a force (approaching to hang down) from the end side to the center side of the absorbent main body 10 in the longitudinal direction. Force (indicated by a black arrow in FIG. 2) will work. On the other hand, the force indicated by the white arrow is a force directed from the center side to the end side of the absorbent main body 10 in the longitudinal direction, and is a force in the direction opposite to the force indicated by the black arrow. Therefore, the force indicated by the white arrow (force that attempts to return to the original state without meandering) resists the force indicated by the black arrow (force that attempts to hang down). It becomes possible to suppress.

  Further, in the present embodiment, not only the separate band member 40 but also the dorsal band joining part 60, the central part in the lateral direction of the dorsal band joining part 60 is closer to the center side of the absorbent main body 10 than the end part. It is arranged in a meandering state so as to be positioned. The dorsal band joining part 60 is a part joined in a state where the dorsal band member 30 and the separate band member 40 are overlapped with each other. Therefore, the dorsal band joining part 60 becomes a part having higher rigidity, and the elongation of the material is further suppressed in the part. . Then, by meandering such a portion having high rigidity, a wide range in the vertical direction (indicated by symbol W2 in FIG. 7). This range W2 is a range wider than the width of the joint indicated by symbol W1. Therefore, since the elongation of the material is suppressed, it is possible to appropriately suppress the sagging of the absorbent main body 10. Moreover, since the location of the width | variety of the junction part in the said vertical direction also arises wider than the width W1 (it shows with the symbol W3), it becomes possible also to suppress appropriately the sagging of the absorptive main body 10 also in this point.

  Further, when the dorsal band joint portion 60 does not meander and is linear, the longitudinal direction (that is, the lateral direction) of the dorsal band joint portion 60 is the force that causes the absorbent main body 10 to hang down (black in FIG. 2). Since the force indicated by the arrow is perpendicular to the force in the vertical direction, the above-described function of suppressing the drooping of the dorsal band joint portion 60 does not work properly. On the other hand, in the present embodiment, since the portion having high rigidity is meandered, an oblique direction portion 61 in which the longitudinal direction of the back side band joint portion 60 is an oblique direction is generated, and the absorbent main body 10 is suspended. A vector component that coincides with the direction of the force to be generated is generated. Therefore, it is possible to appropriately suppress the sagging of the absorbent main body 10.

  Further, in the present embodiment, the separate band member 40 has the separate band thread rubber 43 arranged in a meandering manner along the meandered separate band member 40. Therefore, the elastic force of the separate band rubber 43 serves to lift the absorbent main body 10 against the force (the force indicated by the black arrow in FIG. 2) that the absorbent main body 10 tends to hang down. Fulfill. Therefore, the sagging of the absorbent main body 10 can be further suppressed.

  Further, the separate band thread rubber 43 according to the present embodiment is provided within 20 mm from the near end 40e closer to the center of the absorbent main body 10 among the both ends of the separate band member 40 in the longitudinal direction. It was decided that Therefore, the effect of the separate band thread rubber 43 can be applied from a position close to the center side of the absorbent main body 10 (that is, the wearer's inseam), and the drooping of the absorbent main body 10 can be further suppressed. It becomes.

  Further, since the separate band member 40 according to the present embodiment is provided in the diaper 1 by meandering the rectangular band-shaped sheet member 100, a simple-shaped sheet member may be prepared and can be easily separated. The diaper 1 provided with the body band member 40 can be realized.

  Further, in the present embodiment, since the degree of elongation in the long side direction of the belt-like sheet member 100 is smaller than the degree of elongation in the short side direction, the separate band member 40 is meandered as described below. The effect of providing in the state which was carried out will be exhibited more appropriately.

  That is, in the case where the relationship of the degree of elongation is as described above, if the separate band member 40 is linear without meandering, the short side direction, which is the direction in which the separate band member 40 is easy to extend, is the absorbent main body 10. This coincides with the direction of the force of drooping (the force indicated by the black arrow in FIG. 2), and the effect of suppressing the drooping of the absorbent main body 10 cannot be further exerted (on the other hand, the long side that is difficult to stretch) The direction is orthogonal to the direction of the force with which the absorbent body 10 attempts to hang down). On the other hand, when the separate band member 40 is meandered, the short side direction that is easy to extend does not coincide with the direction of the force that the absorbent main body 10 tends to hang down. Instead, the stretchable long side direction that is orthogonal to the force of the absorbent main body 10 to hang down intersects with the force of the sag to cross, and the drooping in the long side direction that is difficult to stretch. A vector component that coincides with the direction of the force to be generated is generated. Therefore, the effect of suppressing the sagging of the absorbent main body 10 is further enhanced. As described above, when the degree of elongation is as described above due to the fiber orientation or the like, the effect of providing the separate band member 40 in a meandering state is more than that when there is no fiber orientation. It will be demonstrated more appropriately.

  Further, in the present embodiment, in the state where at least a part of one member of the dorsal belt member 30 and the ventral belt member 20 (in this embodiment, the dorsal belt member 30) overlaps, In the direction, both edge portions 42 in the lateral direction of the separate band member 40 positioned closer to the center side of the absorbent main body 10 than the one member are the one of the back band member 30 and the ventral band member 20 Is joined to the other member (in the present embodiment, the ventral belt member 20). Therefore, the position fixability of the separate band member 40 is improved, and the separate band member 40 can support the absorbent main body 10 in cooperation with the other member (ventral side band member 20). Therefore, it is possible to further suppress the sagging of the absorbent main body 10.

  Further, the separate band member 40 according to the present embodiment overlaps the absorbent main body 10, and the absorbent main body 10 and the separate band member 40 at the overlapping portion 72 between the absorbent main body 10 and the separate band member 40. The absorptive main body joining part 62 is provided, and the absorptive main body joining part 62 is arranged in a meandering state along the meandering separate band member 40. Therefore, an effect similar to the above-described effect caused by meandering the back side band joining portion 60 is caused by meandering the absorbent main body joining portion 62. That is, according to the present embodiment, it is possible to further suppress the sagging of the absorbent main body 10 by meandering not only the back band joint portion 60 but also the absorbent main body joint portion 62.

  Further, in the present embodiment, the stress of the separate band thread rubber 43 (in other words, the tension of the separate band thread rubber 43 in the central portion 40a rather than the end 40b in the lateral direction of the separate band member 40). ) Is small.

  Therefore, it is possible to suppress sagging of the absorbent main body 10 while suppressing the absorber 11 of the absorbent main body 10 located at a position corresponding to the central portion 40a from being contracted by the stress. That is, when the absorber 11 contracts due to stress, a situation occurs in which the absorber 11 is biased toward the center in the lateral direction. Therefore, weight concentrates in the center, and the absorbent main body 10 is likely to hang down. Therefore, in the present embodiment, the sagging of the absorbent main body 10 is suppressed by reducing the stress in the central portion 40a rather than the end portion 40b.

  In the present embodiment, the one member (in this embodiment, the dorsal band member 30) is fixed to the absorbent main body 10 from the inside, and the separate band member 40 is attached to the absorbent main body 10. It was fixed from the outside. Therefore, the absorptive main body 10 is sandwiched between the back band member 30 and the separate band member 40, the position fixability of the absorptive main body 10 is improved, and the sagging of the absorptive main body 10 can be further suppressed. Become.

  Further, in the present embodiment, a plurality of separate band thread rubbers 43 are adjacent to the thread rubber installation area 44 provided side by side in the longitudinal direction, and the thread rubber installation area 44 in the longitudinal direction, and When the diaper 1 is put on, the rubber thread non-installation area 45 is located at a position corresponding to the buttock and is wider than the rubber thread installation area 44. That is, instead of arranging the separate band thread rubber 43 at an equal pitch, an area where the separate band thread rubber 43 is concentrated and an area where the separate band thread rubber 43 is not concentrated (that is, an area corresponding to the buttocks) are formed.

  When the rubber band is installed at the corresponding position corresponding to the buttocks, a situation may occur in which the corresponding position moves up following the movement of the foot. In this case, as a result, the separate band member 40 cannot cover the heel part, and thus the above-described effect by providing the separate band member 40 may not be exhibited. On the other hand, in the present embodiment, since it is possible to secure a region where the rubber thread does not exist in a wide range in the collar portion, it is possible to more appropriately exert the effect of providing the separate band member 40. Become.

  Moreover, the manufacturing method of the diaper 1 which concerns on this Embodiment apply | coats the hot-melt-adhesive 102 along the long side direction to the rectangular strip-shaped sheet member 100, meanders the strip-shaped sheet member 100, and the said Forming the separate band member 40 by overlapping and attaching to one member (in this embodiment, the back side band member 30). Therefore, even if the hot melt adhesive 102 is not meanderingly applied (when the hot melt adhesive 102 is applied, the hot melt adhesive 102 may be applied in a straight line along the long side direction), the meandering back side band joint portion 60 is formed. It can be realized. Therefore, it is possible to easily realize the meandering back side band joint portion 60.

  Moreover, in the manufacturing method of the diaper 1 which concerns on this Embodiment, it has provided the separate band thread rubber 43 along a long side direction within 10 mm from the edge in the short side direction of the strip | belt-shaped sheet member 100, When the band-shaped sheet member 100 is meandered and attached to the one member (in this embodiment, the back-side band member 30) so as to overlap, when the separate band member 40 is formed, the end in the short side direction is The separate band member 40 is attached so as to be the near end 40e closer to the center of the absorbent main body among the both ends in the longitudinal direction.

  If the separate band thread rubber 43 is to be meandered and attached to the meandering separate band member 40, it is difficult to accurately attach it near the near end 40e of the separate band member 40 (near end). It is difficult to bend the separate band rubber 43 in accordance with the meandering direction of 40e). Therefore, a useless space is inevitably formed between the near end 40e and the separate band thread rubber 43.

  On the other hand, in this embodiment, when attaching the separate band thread rubber 43, it is provided in a straight line along the long side direction within 10 mm from the end in the short side direction of the band-shaped sheet member 100, and thereafter Since the belt-like sheet member 100 is meandered and attached to the one member (in this embodiment, the back-side belt member 30), it is freed from the difficulty of bending the separate belt rubber rubber 43 in accordance with the meandering direction. Therefore, the separate band thread rubber 43 can be accurately attached in the vicinity of the near end 40e of the separate band member 40.

=== Other Embodiments ===
The above-described embodiments are for facilitating the understanding of the present invention, and are not intended to limit the present invention. The present invention can be modified and improved without departing from the gist thereof, and it goes without saying that the present invention includes equivalents thereof.

  In the said embodiment, although the absorber (SAP sheet | seat) which does not contain a pulp substantially and consists of an absorptive polymer was mentioned as an example and demonstrated as the absorber 11, it is not limited to this. For example, the absorbent body 11 containing pulp may be used.

  When the absorbent body 11 is an absorbent body that does not substantially contain pulp and is made of an absorbent polymer, the absorbent body 11 becomes thin, and therefore the rigidity is reduced. Therefore, while the absorber 11 easily follows the skin, the absorber 11 contracts and bites into the buttocks (butt), that is, the absorber 11 is biased toward the center in the lateral direction. Is likely to occur. When such a situation occurs, the weight concentrates in the center, and the absorbent main body 10 is likely to hang down. Therefore, in the case where the absorbent body 11 is an absorbent body that substantially does not contain pulp and is made of an absorbent polymer, the above-described effect of suppressing the sagging of the absorbent main body 10 is more appropriately exhibited. . In this respect, the above embodiment is more desirable.

  Further, the rigidity of the separate band member 40 may be higher than the rigidity of the one member (in this embodiment, the back band member 30). That is, the material of the separate belt member 40 is made more rigid than the material of the back belt member 30, or the number of stacked materials of the separate belt member 40 is increased more than the number of stacked materials of the back belt member 30. Thus, the rigidity of the separate band member 40 may be further increased. In such a case, due to the higher rigidity of the separate band member 40, the drooping of the absorbent main body 10 can be further suppressed.

  Moreover, in the said embodiment, although the shape shown in FIG. 3A and FIG. 3B was mentioned as an example and demonstrated as the meandering junction part (back | dorsal band junction part 60 and the absorptive main body junction part 62), it is limited to this. Is not to be done. For example, the example shown in FIG. 12 may be used. That is, the “meandering” of the joint portion does not necessarily mean that it is meandering at both ends in the width direction of the joint portion, and only one end in the width direction of the joint portion is meandering as shown in FIG. It is a concept that includes cases.

<<< About Second Embodiment >>>
Next, 2nd embodiment is described using FIG.13 and FIG.14. FIG. 13 is a diagram corresponding to FIG. 3B and is a schematic plan view showing a joint portion of the diaper 1 according to the second embodiment. FIG. 14 is a diagram corresponding to FIG. 7 and is a schematic plan view showing the position of the dorsal band joint portion 60 in the separate band member 40 according to the second embodiment.

  The difference of the diaper 1 according to the second embodiment from the above-described embodiment (hereinafter also referred to as the first embodiment) is the number of separate band thread rubbers 43 provided in the separate band member 40. That is, in the first embodiment, five separate band thread rubbers 43 are arranged on the separate band member 40, but in the second embodiment, in addition to the five separate band thread rubbers 43, One separate band thread rubber 43 is added (this added separate band thread rubber 43 is referred to as an additional separate band thread rubber 43a for convenience). Therefore, in the second embodiment, the total number of separate band thread rubbers 43 is six.

  The additional separate band thread rubber 43 a is interposed between the two nonwoven fabrics 41 and joined and fixed to the two nonwoven fabrics 41, similarly to the other separate band thread rubbers 43. Further, the separate band member 40 is provided from one end to the other end in the lateral direction. Moreover, it arrange | positions in the state meandered along the separate belt member 40 which meandered.

  The one member (in this embodiment, the back band member 30) has a back band rubber thread 33 (corresponding to one elastic member) arranged along the lateral direction. The separate belt rubber 43a and the back belt rubber 33 (for example, the back belt rubber indicated by the reference numeral 33a in FIG. 13; for convenience, the cross back belt rubber 33a is crossed). Therefore, the back-side belt rubber 33 that holds (holds) the back-side belt member 30 and the additional separate belt-and-thread rubber 43a that tries to lift the absorbent main body 10 can be directly linked to each other (both sides). ), The sagging of the absorbent main body 10 can be further suppressed.

  Further, the intersection (there is a plurality of intersections where the additional separate band thread rubber 43a and the back side band rubber 33 intersect, for example, the intersection C where the additional separate band thread rubber 43a and the cross back side band rubber 33a intersect) The overlapping portion 70 of the one member (in this embodiment, the back side band member 30) and the separate band member 40 is located on the back side band joining part 60 for joining both members. In other words, the back belt member 30 and the separate belt member 40 are joined at the intersection C. Therefore, the linkage between the additional separate band rubber 43a and the back band rubber 33 becomes stronger (the interaction between the two rubber threads becomes larger), and the drooping of the absorbent main body 10 is further suppressed remarkably. It becomes possible.

  In addition, in 2nd embodiment, as shown in FIG. 14, the additional separate band thread rubber 43a is located on the back | dorsal band junction part 60 ranging from the one end of the additional separate band thread rubber 43a to the other end. ing. Therefore, as for the additional separate band thread rubber 43 a, all the intersections other than the intersection C in FIG. 13 are also located on the dorsal band joint portion 60.

  Moreover, it has a backside belt rubber 33 that intersects with the separate belt rubber 43 (additional separate belt rubber 43a) and whose crossing point is located on the backband joint portion 60, and is different from the backband rubber 33. Another backside band rubber 33 does not intersect the separate band thread rubber 43 and the backside band joint 60. That is, in the plurality of backside band rubbers 33, unlike the cross backside band rubbers 33a described above, the backside band rubbers 33 (for example, which do not cross any of the separate band thread rubbers 43 and the back side band joints 60) (for example, There is a back side band rubber indicated by 33b in Fig. 13 (referred to as non-crossing back side band rubber 33b for convenience).

  Since such a non-crossing backside band rubber 33b is provided separately from the crossing backside band rubber 33a, the backside band member 30 is pressed (held) without being linked to the separate band thread rubber 43. Since the dedicated back side band rubber 33 is also provided, the original function of the back side band member 30 can be surely exhibited.

DESCRIPTION OF SYMBOLS 1 Diaper, 1a Trunk opening, 1b Leg opening 10 Absorbent main body, 10a One end part, 10b Other end part 11 Absorber, 12 Absorber upper sheet member, 13 Absorber lower sheet member 14 Top sheet member 15 Back sheet member 15a Leak-proof sheet, 15b Exterior sheet 16 Side flap, 17 Absorbent main body thread rubber 20 Ventral belt member, 20a Both edges 21 Non-woven fabric, 22 Illustration sheet, 23 Ventral band rubber thread 30 Dorsal band member, 30a Both edges 31 Non-woven fabric, 32 Illustration sheet 33 Back side band rubber, 33a Cross back side band rubber, 33b Non-cross back side band rubber 40 Separate band member, 40a Central part, 40b End part, 40c Near end part 40d Far end part, 40e Near End 41 Non-woven fabric, 42 Both edges, 42a End 43 Separate band thread rubber, 43a Additional separate band thread rubber 44 Thread rubber installation area, 45 Thread rubber non- Installation area 50 Cover member 60 Back side band joint part, 60a First back side joint part, 60b Second back side joint part 61 Diagonal direction part, 62 Absorbent main body joint part 70 Overlap part, 72 Overlap part 100 Strip sheet member, 102 Hot melt adhesive A1 1st overlap area, A2 2nd overlap area, A3 3rd overlap area C Intersection LG Leg gather

Claims (17)

A longitudinal direction and a transverse direction intersecting the longitudinal direction,
An absorbent body that absorbs excreta;
A dorsal belt member fixed to one end of the absorbent body in the longitudinal direction;
A ventral belt member fixed to the other end in the longitudinal direction of the absorbent main body,
An absorbent article formed by joining both edges in the lateral direction of the back band member and both edges in the lateral direction of the ventral band member,
A separate band member different from the absorbent main body, the dorsal band member, and the ventral band member;
The separate band member is:
In a state where at least a part of either the back-side belt member or the ventral-side belt member overlaps, the longitudinal body is positioned closer to the center of the absorbent body than the one member, and Provided in a state in which the central portion in the lateral direction of the separate band member is inclined toward the central side so as to be located on the central side in the longitudinal direction of the absorbent main body continuously from both ends .
A joining portion for joining the one member and the separate belt member is provided,
The joint portion is arranged in a state of being inclined toward the center side so that the center portion in the lateral direction of the joint portion is continuously located on the center side in the longitudinal direction of the absorbent main body from both end portions. An absorbent article characterized by having The absorbent article according to claim 1,
The separate band member has an elastic member disposed along the separate band member ,
The elastic member is disposed in a state where the elastic member is inclined toward the central side so that the central part in the lateral direction of the elastic member is continuously located on the central side in the longitudinal direction of the absorbent main body from both ends. absorbent article, characterized in that is. The absorbent article according to claim 2,
The said elastic member is provided within 20 mm from the edge near the center of the said absorptive main body among the both ends in the said vertical direction of the said separate band member, The absorbent article characterized by the above-mentioned. The absorbent article according to any one of claims 1 to 3,
The said separate band member is a rectangular strip-shaped sheet member , Absorbent article characterized by the above-mentioned. The absorbent article according to claim 4,
The absorbent article according to claim 1, wherein an extension degree in a long side direction of the belt-like sheet member is smaller than an extension degree in a short side direction. An absorbent article according to any one of claims 1 to 5,
The said separate body located in the center side of the said absorptive main body rather than this one member in the said vertical direction in the state which at least one part overlapped with any one member of the said back side belt member and the said ventral side belt member Both edges in the lateral direction of the band member are
An absorptive article characterized by being joined to the other member different from said one member among the back side belt member and the ventral side belt member. The absorbent article according to any one of claims 1 to 6,
The separate band member overlaps the absorbent main body,
A joining portion for joining the absorbent main body and the separate band member at an overlapping portion of the absorbent main body and the separate band member;
The joint portion is disposed along the separate band member, and the central portion in the lateral direction of the joint portion is continuously located on the central side in the longitudinal direction of the absorbent main body from both end portions. The absorbent article is arranged so as to be inclined toward the center side . An absorbent article according to any one of claims 1 to 7,
The separate band member has an elastic member disposed along the separate band member ,
The elastic member is disposed in a state where the elastic member is inclined toward the central side so that the central part in the lateral direction of the elastic member is continuously located on the central side in the longitudinal direction of the absorbent main body from both ends. And
The absorbent article, wherein the stress of the elastic member is smaller in the central portion than in the lateral end portion of the separate band member. An absorbent article according to any one of claims 1 to 8,
The absorbent main body has an absorbent body,
The absorbent article does not contain pulp and is made of an absorbent polymer. An absorbent article according to any one of claims 1 to 9,
The one member is fixed to the absorbent main body from the inside,
The said separate band member is being fixed to the said absorptive main body from the outside, The absorbent article characterized by the above-mentioned. The absorbent article according to any one of claims 1 to 10,
The absorbent article, wherein the rigidity of the separate band member is higher than the rigidity of the one member. The absorbent article according to any one of claims 1 to 11,
The separate band member has an elastic member disposed along the separate band member ,
The elastic member is disposed in a state where the elastic member is inclined toward the central side so that the central part in the lateral direction of the elastic member is continuously located on the central side in the longitudinal direction of the absorbent main body from both ends. And
A plurality of elastic members, wherein the elastic member is disposed side by side in the longitudinal direction;
An elastic member non-installation region that is adjacent to the elastic member installation region in the longitudinal direction and is located at a position corresponding to the collar when the absorbent article is mounted, and wider than the elastic member installation region;
An absorbent article comprising: An absorbent article according to any one of claims 1 to 12,
The separate band member is a separate elastic member disposed along the separate band member .
The one member has one elastic member arranged along the lateral direction,
The separate elastic member is inclined toward the central side so that the central portion in the lateral direction of the separate elastic member is continuously located on the central side in the longitudinal direction of the absorbent main body from both end portions. Arranged in a state,
The absorbent article, wherein the separate elastic member and the one elastic member intersect each other. The absorbent article according to claim 13,
The intersection where the separate elastic member and the one elastic member intersect is located on a joint for joining both members at the overlapping portion of the one member and the separate band member. Absorbent article. The absorbent article according to claim 14, wherein
Having one elastic member different from the one elastic member that intersects the separate elastic member and the intersection is located on the joint,
The other one elastic member does not intersect the separate elastic member and the joint part. A longitudinal direction and a transverse direction intersecting the longitudinal direction,
An absorbent body that absorbs excreta;
A dorsal belt member fixed to one end of the absorbent body in the longitudinal direction;
A ventral belt member fixed to the other end in the longitudinal direction of the absorbent main body,
Formed by joining both edges in the lateral direction of the back band member and both edges in the lateral direction of the ventral band member;
A separate band member different from the absorbent main body, the dorsal band member, and the ventral band member;
The separate band member is:
In a state where at least a part of either the back-side belt member or the ventral-side belt member overlaps, the longitudinal body is positioned closer to the center of the absorbent body than the one member, and Absorbent article provided in a state of being inclined toward the central side so that the central part in the lateral direction of the separate band member is continuously located on the central side in the longitudinal direction of the absorbent main body from both ends. A method for producing an absorbent article forming
Applying an adhesive along the long side direction to a rectangular belt-shaped sheet member;
The belt-shaped sheet member is inclined toward the central side so that the central portion in the lateral direction of the belt-shaped sheet member is continuously located on the central side in the longitudinal direction of the absorbent main body from both end portions , Forming the separate band member by overlapping and attaching to the one member;
The manufacturing method of the absorbent article characterized by having. It is a manufacturing method of the absorptive article according to claim 16,
Providing an elastic member along the long side direction within 10 mm from the end in the short side direction of the belt-shaped sheet member;
When forming the separate band member by attaching the band-shaped sheet member to the one member in an overlapping manner, the end in the short side direction is the absorption of both ends in the longitudinal direction of the separate band member. A method for producing an absorbent article, wherein the absorbent body is attached so as to be at an end closer to the center of the absorbent main body.

Images