JP2017164358A - Disposable diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disposable diaper separated to a front bodice external body, a rear bodice external body, and an absorbent body, and capable of enhancing air permeability on a portion where a tack is formed.SOLUTION: There is provided a disposable diaper comprising a front bodice external body 10, a rear bodice external body 20, and an absorbent body 30, in which the absorbent body 30 is coupled to any one or both of external bodies of the front bodice external body 10 and the rear bodice external body 20, through a coupling part 40 having a mountain-folding part and a valley folding part extending in a width direction of the disposable diaper, and a pattern 49 is printed on the coupling part 40.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a disposable diaper that is attached to a wearer's crotch and absorbs and holds a liquid such as urine.

  Conventionally, disposable diapers in which a plurality of tacks are formed on the back body are known. For example, in the disposable diaper disclosed in Patent Document 1, a tuck is formed by folding a sheet member constituting the back body along a mountain fold line and a valley fold line. For example, when the wearer tilts forward, the tack is developed in the vertical direction in accordance with the elongation of the wearer's back. For this reason, the back of the diaper can be prevented from slipping toward the inseam of the wearer and sagging in the vicinity of the inseam, and the back of the back of the diaper is insufficient and the back of the wearer protrudes. It is possible to avoid a gap between the backs of the two.

JP 2012-239555 A

  As mentioned above, by forming multiple tacks on the back of the disposable diaper, the diaper can be made to follow the wearer's body growth, thus improving the fit and wearing feeling of the diaper. it can. However, since this tack is formed by folding the sheet member constituting the back body, the breathability is reduced at the part where the sheet member overlaps, and moisture accumulates between the wearer's skin and the diaper, There was a risk of giving the wearer discomfort due to stuffiness. Further, when the number of tacks is plural, a decrease in air permeability becomes a more significant problem.

  Then, this invention aims at improving the air permeability of the site | part in which the tack was formed in the disposable diaper isolate | separated into the front body exterior body, the back body exterior body, and the absorptive main body.

  The present invention relates to a disposable diaper. The disposable diaper of the present invention includes a front body exterior body 10 located on the wearer's abdomen side, a rear body exterior body 20 located on the wearer's back side, and an absorbent main body 30 located on the wearer's crotch. Prepare. The present invention can be applied to both a pants-type disposable diaper and a tape-type disposable diaper. The pants-type disposable diaper is connected in a substantially annular shape by joining the front body exterior body 10 and the back body exterior body 20 at the side seal portions provided on the left and right sides of the disposable diaper in the width direction. It is a diaper of the type in which a waist opening located around and a leg opening located around both legs of the wearer are formed. In the tape-type disposable diaper, a pair of right and left fastening tapes are attached to both end portions in the width direction of one of the outer bodies of the front body exterior body 10 and the back body exterior body 20, and the fastening tape is attached to the exterior. It is a type of diaper that is worn on the wearer's inseam by fastening to the other side of the body.

  The absorptive main body 30 includes a connecting portion 40 having a mountain fold portion 41 and a valley fold portion 42 extending in the width direction of the disposable diaper with respect to both or any one of the front body exterior body 10 and the back body exterior body 20. Are connected through. The “mountain fold portion” referred to here is a folded portion that protrudes upward in a worn state, and the “valley fold portion” is a folded portion that protrudes downward in a worn state. The connecting portion 40 may be a separate independent member separated from the front body exterior body 10, the back body exterior body 20, and the absorbent main body 30, or a member integrated with the absorbent main body 30. It may be a member integrated with the exterior body. In the present specification, the term “exterior body” simply refers to both or either the front body exterior body 10 and the back body exterior body 20.

  As described above, the connecting portion 40 is provided between the absorbent main body 30 and the exterior bodies 10 and 20, and the tack is formed on the connecting portion 40, for example, the tack is formed on the exterior bodies 10 and 20 itself. Compared to the case, the spreadability of the tack is improved. That is, it can be said that when the absorbent main body 30 is pulled, the connecting portion 40 follows and the tack is developed, so that the tack is easily developed. And if the development of the tack is improved, the space between the tack and the wearer's skin is created and has the effect of drying the skin, and when the tack is pushed by the wearer's clothes, etc. It can be expected to have the effect of discharging the moisture accumulated inside the diaper.

  In the present invention, a pattern 49 is printed on the connecting portion 40. The design 49 includes a character, a figure, a symbol, a pattern or a color, or a combination thereof. In the disposable diaper of the present invention, the connecting portion 40 is preferably a separate body from the absorbent main body 30. In this case, the connecting portion 40 further includes an outer region 45 that extends from the mountain fold portion 41 toward the absorbent main body 30 and has a joint portion 45 a that is joined to the skin non-facing surface side of the absorbent main body 30. In this case, it is preferable that the pattern 49 is printed on the non-facing surface of the leak-proof sheet 51 in the outer region 45.

  As in the above configuration, the pattern 49 printed on the outer region 45 of the connecting portion 40 is always visible from the outside. For this reason, the skin non-facing surface of the outer region 45 is suitable for printing a pattern 49 such as a character. When printing a design 49 such as a character, it is common to separately prepare a plastic film in addition to the leak-proof sheet 51 and print it there. On the other hand, for example, by printing the design 49 on the non-facing surface of the leak-proof sheet 51 in the outer region 45, there is no need to separately prepare a plastic film for design printing. The score can be reduced. In addition, when a plastic film for design printing is separately provided, there is a concern that the number of sheet members that are overlapped increases and the air permeability and flexibility are lowered. However, according to the above configuration, such a problem can be solved.

  Furthermore, in the disposable diaper according to the present invention, the connecting portion 40 has an intermediate region 43 located between the mountain folded portion 41 and the valley folded portion 42. And the identification means 48 which can be distinguished from another site | part is provided in the skin facing surface 43c of this intermediate | middle area | region 43, and the facing site | part 44b which faces the said skin facing surface 43c at least one part or any one. Yes. As used herein, the “identification means” includes characters, figures, symbols, patterns, uneven patterns, a material different from the sheet member constituting the exterior body, a color different from the sheet member constituting the exterior body, or a combination thereof. Is included.

  In the present invention, by providing the identification means 48, the unfolded state of the tack can be recognized by the wearer or the assistant who puts the wearer on the diaper. That is, in the disposable diaper of the present invention, the identification means 48 is provided to the skin facing surface 43c of the intermediate region 43 of the connecting portion 40 and / or the facing portion 44b corresponding thereto as in the above configuration. The skin facing surface 43c and the facing portion 44b of the intermediate region 43 are portions that are not visible from the outside (at least difficult to see) when the tack is folded, and are visible only after the tack is unfolded (at least It is easier to see than before unfolding the tack). For this reason, by providing the identification means 48 to the skin facing surface 43c and the facing portion 44b of the intermediate region 43, the wearer or the assistant recognizes the developed state of the tack using the identification means 48 as a mark. Can do.

  Further, it is necessary to avoid leakage of excrement such as urine and loose stool from the connecting portion 40. Therefore, in the present invention, the connecting portion 40 preferably has a structure in which the leakage preventing sheet 51 and the outer sheet 52 positioned on the skin non-facing surface side of the leakage preventing sheet 51 are laminated in the thickness direction. . The leak-proof sheet 51 is preferably a sheet member having liquid impermeability and air permeability. The outer sheet 52 is mainly composed of a nonwoven fabric, and may be composed of a nonwoven fabric. By including the leak-proof sheet 51 in the connecting part 40, it is possible to prevent the excrement from leaking. Moreover, the touch of the connection part 40 can be improved by covering the non-skin facing surface side of the leak-proof sheet 51 with the outer surface sheet 52.

  When the connecting portion 40 is configured to include the leak-proof sheet 51 and the outer sheet 52 as in the above configuration, the identification means 48 positioned on the skin facing surface 43c of the intermediate region 43 or the facing portion 44 is provided with It is preferable that the leakage sheet 51 is provided on the skin non-facing surface. The leak-proof sheet 51 is composed of a plastic film or the like, and the identification means 48 can be clearly displayed by adding the identification means 48 to the plastic film. Moreover, since what is bonded to the skin non-facing surface side of the leak-proof sheet 51 is the outer surface sheet 52 made of a nonwoven fabric, the wearer or the assistant can identify the means 48 attached to the leak-proof sheet 51. Can be seen through the outer sheet 52.

  The connecting portion 40 has at least an intermediate region 43 located between the mountain folded portion 41 and the valley folded portion 42. The intermediate region 43 has both a portion facing the skin facing surface side and a portion facing the skin non-facing surface side of the intermediate region 43 in a state where the connecting portion 40 is folded at the mountain fold portion 41 and the valley fold portion 42. Or it has the joining area | region 43a joined so that peeling or the non-peeling with respect to any one site | part. In addition, the intermediate | middle area | region 43 may be joined not only the site | part which faces the skin opposing surface side but the site | part which faces the skin non-opposing surface side in the joining area | region 43a. Moreover, although the joining area | region 43a may cover the whole region of the intermediate | middle area | region 43, in that case, the joining area | region 43a joins the intermediate | middle area | region 43 so that peeling is possible with respect to the facing part (namely, temporary joining). is there. In addition, the joining region 43a may be one that joins the intermediate region 43 to the facing portion so as not to be peeled off. In that case, the joining region 43a is partially provided in the intermediate region 43. . In addition, when the joining area | region 43a is provided in a part of intermediate | middle area | region 43, another area | region is called the non-joining area | region 43b.

  In the pants-type disposable diaper, the so-called side seal portion 4 can also be interpreted as functioning as the joining region 43a.

  ADVANTAGE OF THE INVENTION According to this invention, in the disposable diaper isolate | separated into the front body exterior body, the back body exterior body, and the absorptive main body, the air permeability of the site | part in which the tack was formed can be improved.

FIG. 1 is an external perspective view schematically showing a disposable diaper according to an embodiment of the present invention. FIG. 2 is a developed view showing a disposable diaper according to an embodiment of the present invention. FIG. 3 is a longitudinal sectional view showing a disposable diaper according to an embodiment of the present invention. FIG. 4 is a longitudinal sectional view showing a state in which the tack is developed from the state shown in FIG. FIG. 5 is an external perspective view showing a state where the tack is unfolded from the state shown in FIG. FIG. 6 is an enlarged vertical cross-sectional view of a main part showing an enlarged rear body side of the vertical cross-sectional view shown in FIG. 3. FIG. 7 is a schematic diagram showing an example of the identification means and the symbols given to the connecting member. FIG. 8 is a cross-sectional view corresponding to FIG. 6 showing a first modification of the disposable diaper according to the present invention. FIG. 9 is a cross-sectional view corresponding to FIG. 6 showing a second modification of the disposable diaper according to the present invention.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. This invention is not limited to the form demonstrated below, The thing suitably changed in the range obvious to those skilled in the art from the following forms is also included.

In the present specification, the “longitudinal direction” is the front-rear direction of the disposable diaper, and means the direction connecting the front body and the back body of the disposable diaper. The “width direction” means a direction orthogonal to the longitudinal direction in a plane. In the drawings of the present application, the “longitudinal direction” is indicated by the Y axis, and the “width direction” is indicated by the X axis.
In the specification of the present application, the “skin facing surface” means a surface facing the wearer's skin when the disposable diaper is worn. In addition, the “non-skin facing surface” means a surface that does not face the wearer's skin in a wearing state of the disposable diaper, that is, a surface opposite to the skin facing surface.
In the present specification, “A to B” means “A or more and B or less”.

[1. Exterior body and absorbent body]
FIG. 1 is an external perspective view of a disposable diaper according to an embodiment of the present invention. FIG. 2 is a development view of the disposable diaper shown in FIG. 1 and shows a state in which the diaper is viewed in plan from the skin facing surface side. 3 is a longitudinal sectional view of the disposable diaper shown in FIG. 1, and shows a cross-sectional structure taken along the line III-III shown in FIG. In the present specification, the present invention will be described by taking as an example a case where the present invention is applied to a pants-type disposable diaper. However, the present invention is not limited to a pants-type disposable diaper, but can also be applied to a tape-type disposable diaper.

  As shown in FIGS. 1 to 3, a disposable diaper 100 according to the present invention includes a front body 1 in contact with the wearer's abdomen, a back body 2 in contact with the wearer's back in the longitudinal direction (Y-axis direction), and The crotch part 3 is divided between the front body 1 and the back body 2. In the present embodiment, the front body exterior body 10 is positioned on the front body 1, and the back body exterior body 20 is positioned on the back body 2. In addition, an absorbent main body 30 is positioned in the crotch part 3, and the absorbent main body 30 extends in the longitudinal direction from the crotch part 3 to the front body 1 and the back body 2. For this reason, as for the absorptive main body 30, the edge part on the front body 1 side overlaps with the front body exterior body 10 in the thickness direction, and the edge part on the back body 2 side overlaps with the back body exterior body 20 in the thickness direction. In the present invention, the front body exterior body 10, the back body exterior body 20, and the absorbent main body 30 are basically configured as separate bodies. In this embodiment, each exterior body 10 and 20 is formed in the substantially rectangular shape long in the width direction in planar view. Moreover, the absorptive main body 30 is formed in the substantially rectangular shape long in a longitudinal direction in planar view. However, the shape of each exterior body 10 and 20 and the absorptive main body 30 is not restricted to what was illustrated, It can deform | transform suitably in the range which can exhibit the function of this invention.

  Moreover, the side seal part 4 is provided in the left-right both ends of the width direction (X-axis direction) of the front body exterior body 10 and the back body exterior body 20. As shown in FIG. In the side seal portion 4, the facing portions of the left and right ends of the front body exterior body 10 and the rear body exterior body 20 are joined to each other. As a joining method, for example, a known method such as heat sealing, ultrasonic sealing, or adhesion using a hot melt adhesive can be employed. As shown in FIG. 1, the front body exterior body 10 and the rear body exterior body 20 are joined at the side seal portion 4, so that the exterior bodies 10 and 20 are connected in a ring shape. The waist opening 5 is defined by the upper edges of the front body exterior body 10 and the rear body exterior body 20. Further, the absorbent main body 30 is disposed so as to be bridged from the lower end portion of the front body exterior body 10 to the lower end portion of the rear body exterior body 20. For this reason, the left and right leg openings 6 are defined by the left and right side edges of the absorbent main body 30 and the lower edges of the exterior bodies 10 and 20. The wearer can wear the pants-type disposable diaper 100 by inserting both legs from the waist opening 5 and taking out one leg from the left and right leg openings 6.

  As shown in FIG. 3, each of the exterior bodies 10 and 20 includes inner sheets 11 and 21 located on the skin facing surface side, outer sheets 12 and 22 located on the skin non-facing surface side, an inner sheet and an outer sheet. 1 or a plurality of waist elastic members 13 and 23 located between. When there are a plurality of waist elastic members 13 and 23, they are arranged at predetermined intervals in the longitudinal direction. The waist elastic members 13 and 23 are sandwiched and fixed between the inner sheets 11 and 21 and the outer sheets 12 and 22 in a state of extending in the width direction of the diaper. For example, a hot melt adhesive or the like may be directly applied to the stretched waist elastic members 13 and 23, and the adhesive applied may be disposed between the inner sheets 11 and 21 and the outer sheets 12 and 22. . Thereby, when the waist elastic members 13 and 23 contract, the inner sheets 11 and 21 and the outer sheets 12 and 22 bend to form a plurality of fine wrinkles (waist gathers). Although the number which arrange | positions the waist elastic members 13 and 23 is not specifically limited, For example, 3-20 or 4-15 is preferable.

  As the sheet member for forming the inner sheets 11 and 21 and the outer sheets 12 and 22, a known material can be used, and is not particularly limited, but is preferably formed of a non-woven fabric having a good touch. Examples of the nonwoven fabric include air-through nonwoven fabric, point bond nonwoven fabric, spunbond nonwoven fabric, airlaid nonwoven fabric, melt blown nonwoven fabric, SMS nonwoven fabric, and SMMS nonwoven fabric. Further, as the elastic members 13 and 23, known elastic elastic members can be used. For example, thread elastic rubber can be suitably used. As such a rubber material, materials such as styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicone, and polyester can be used.

  Further, as shown in FIG. 3, the outer sheets 12, 22 are extended upward in the longitudinal direction from the inner sheets 11, 21, and the extended portions are skin facing surfaces at the edge of the waist opening 5. It may be folded back and joined to the skin facing surfaces of the inner sheets 11 and 21. By doing in this way, the touch of the waist opening part 5 can be made soft.

  As shown in FIG. 3, the absorbent main body 30 basically includes an absorbent body 31 that absorbs and retains body fluid, a liquid-permeable top sheet 32 that covers the skin-facing surface of the absorbent body 31, and A liquid-impermeable back sheet 33 that covers the non-skin facing surface of the absorber 31 is provided. The top sheet 32 and the back sheet 33 are joined at the periphery of the absorber 31. The body fluid excreted from the wearer's crotch passes through the top sheet 32 and is guided to the absorber 31, and leakage to the outside is prevented by the back sheet 33.

  The absorber 31 is a member for absorbing body fluid such as urine and holding the absorbed body fluid. The absorber 31 is normally configured by encapsulating an absorbent material with a core wrap sheet such as tissue paper. A well-known material can be employ | adopted for the absorptive material which comprises the absorber 31. FIG. As an absorptive material, it is good also as using a flap pulp, a superabsorbent polymer, or a hydrophilic sheet, for example. Moreover, as an absorptive material, 1 type may be used independently among flap pulp, a superabsorbent polymer, or a hydrophilic sheet | seat, and it is good also as using 2 or more types together. As the absorbent material, a material formed in a single-layer or multi-layer mat shape is usually used. The shape of the absorber 31 can be appropriately designed according to the shape, size, and application of the disposable diaper. For example, the shape of the absorber 31 may be an hourglass shape as shown in FIG. 2, or may be a rectangular shape, an elliptical shape, or a gourd shape that is generally used.

  The top sheet 32 is a member that is in direct contact with the skin of the wearer's crotch and allows body fluid such as urine to pass through the absorbent body 31. For this reason, the top sheet 32 is made of a liquid-permeable material having high flexibility. In the present specification, “liquid permeability” means, for example, the property of permeating water in a time of less than 1 minute when 5 ml of water at room temperature is placed thereon under standard atmospheric pressure. To do. Moreover, the example of the liquid-permeable material which comprises the top sheet 32 is a woven fabric, a nonwoven fabric, or a porous film. Further, for example, a thermoplastic resin fiber such as polypropylene, polyethylene, polyester, or nylon may be hydrophilized and further made into a nonwoven fabric.

  The back sheet 33 prevents body fluid that has passed through the top sheet 32 and is absorbed by the absorber 31 from leaking to the outside. For this reason, the back sheet 33 is made of a liquid-impermeable material. In this specification, “liquid impermeability” means, for example, the property that, when 5 ml of room temperature water is placed thereon under standard atmospheric pressure, the water does not permeate even after 1 minute or more. means. An example of the liquid-impermeable material constituting the back sheet 33 is a plastic film made of polyethylene resin or the like. In particular, as the backsheet 33, it is preferable to use a microporous polyethylene film in which a plurality of fine pores of 0.1 to 4 μm are formed.

  Moreover, the absorptive main body 30 has the cover sheet | seat 34 in the skin non-opposing surface side of the back sheet | seat 33 in addition to the said structure. The cover sheet 34 is bonded to the non-skin facing surface of the back sheet 33 in order to cover the back sheet 33 and improve its feel. As a material constituting the cover sheet 34, a woven fabric or a non-woven fabric may be used. In particular, as a material constituting the cover sheet 34, it is preferable to use a nonwoven fabric or a wet nonwoven fabric made of a thermoplastic resin such as polyethylene, polypropylene, or polyester.

  Moreover, the absorptive main body 30 has the member for comprising a three-dimensional gather in addition to the said structure. The three-dimensional gather is a pair of side sheets 35 having water repellency arranged along the left and right side edges of the absorber 31 and one or a plurality of three-dimensional gathers arranged at the inner edge in the width direction of the side sheet 35. The elastic member 36 is used. The side sheet 35 has a fixed portion fixed along the longitudinal direction with respect to the skin-facing surface of the top sheet 32 and a free end portion that is positioned on the inner side in the width direction than the fixed portion and is not fixed to the top sheet 32. ing. And the three-dimensional gather expansion-contraction member 36 is being fixed to the free end part of this side seat | sheet 35 along the longitudinal direction in the expansion | extension state. For this reason, when the three-dimensional gather expansion / contraction member 36 contracts, the free end portion of the side seat 35 rises by receiving the contraction force to form a three-dimensional gather. The three-dimensional gather formed in this way stands along both side edges of the absorbent body 31 and functions as a leak-proof wall for preventing side leakage of body fluid excreted by the wearer.

  Moreover, the absorptive main body 30 has the leg expansion-contraction member 37 along the left-right both-sides edge of the width direction of the absorptive main body 30 in addition to the said structure. The leg elastic member 37 is fixed to the skin non-facing surface of the side sheet 35 in an extended state along the longitudinal direction, for example. When the leg elastic member 37 contracts, the side sheet 35 bends to form a plurality of fine wrinkles (leg gathers).

[Connecting part]
The disposable diaper 100 which concerns on this invention is further provided with the connection part 40 for connecting the absorptive main body 30 to both the front body exterior body 10, the back body exterior body 20, or any one exterior body. In the embodiment described in the present specification, as the connecting portion 40, the front side connecting member 40 </ b> A that connects the absorbent main body 30 and the front body exterior body 10, and the back after connecting the absorbent main body 30 and the rear body exterior body 20. A side connecting member 40B is provided. In addition, in this invention, the connection part 40 should just be provided in at least one of the front body 1 side and the back body 2 side. In particular, it is preferable that the connecting portion 40 is provided with at least one connecting the absorbent main body 30 and the back body exterior body 20.

  As shown in the cross-sectional view of FIG. 3, in the present embodiment, the front side connecting member 40A is a separate member from the front body exterior body 10 and the absorbent main body 30, and similarly, the rear side connecting member 40B is a member separate from the back body exterior body 20 and the absorbent main body 30. However, although illustration is omitted, the front connecting member 40 </ b> A (the connecting portion 40) may be formed as a member integrated with the front body exterior body 10 or formed as a member integrated with the absorbent main body 30. Also good. Similarly, the rear side connecting member 40 </ b> B (the connecting portion 40) may be formed as a member integral with the back body exterior body 20, or may be formed as a member integral with the absorbent main body 30.

  As shown in FIGS. 2 and 3, the front and rear connecting members 40A and 40B are arranged on the skin non-facing surface side of each of the exterior bodies 10 and 20 and the absorbent main body 30, and each exterior in the width direction. It is formed to have substantially the same width as the bodies 10 and 20. In this embodiment, each connection member 40A, 40B is formed in a substantially rectangular shape that is long in the width direction in plan view. Each connecting member 40A, 40B overlaps with a part in the longitudinal direction of each exterior body 10, 20, and the width direction both ends of each connecting member 40A, 40B are side-sealed at a portion excluding the overlapping portion. That is, the side seal portions 4 are provided on the left and right end portions in the width direction of the connecting members 40A and 40B at portions other than the exterior bodies 10 and 20 and the overlapping portion. Further, both end portions in the width direction of the exterior bodies 10 and 20 are side seal portions 4 except for the overlapping portions of the connecting members 40A and 40B. The front side connecting member 40A and the rear side connecting member 40B are joined to each other at the left and right side seal portions 4 to form a pants shape.

  As shown in FIG. 3, each of the connecting members 40A and 40B is folded into a substantially cross-sectional N shape, and the skin facing surface side region at the upper end of each of the connecting members 40A and 40B is formed in each of the exterior bodies 10 and 20. The area | region of the skin opposing surface side is joined to the absorptive main body 30 in the lower end of each connection member 40A, 40B. If demonstrating it concretely, 40A, 40B will have the mountain fold part 41 which protrudes upwards in a wearing condition, and the valley fold part 42 which protrudes downward in a wearing condition. In the present embodiment, when the mountain fold 41 and the valley fold 42 are compared, the mountain fold 41 is relatively located on the skin non-facing surface and the valley fold 42 is located on the skin facing surface. These mountain folds 41 and valley folds 42 extend linearly along the width direction of the connecting members 40A and 40B. Therefore, by folding along the mountain fold portion 41 and the valley fold portion 42, each of the connecting members 40A and 40B has a substantially N-shaped cross section and includes a portion laminated in three layers. In the present specification, the structure of each of the connecting members 40A and 40B that can be folded along the mountain fold 41 and the valley fold 42 is referred to as “tack”. In the present embodiment, each of the connecting members 40A and 40B has a substantially cross-sectional N-shape, but is not limited thereto, and may have a substantially cross-section inverted N-shape or a structure having a plurality of tacks.

  Further, as shown in FIG. 3, each of the connecting members 40 </ b> A and 40 </ b> B can be divided into an intermediate region 43, an inner region 44, and an outer region 45 with the mountain fold 41 and the valley fold 42 as boundaries. it can. The intermediate region 43 is a region located between the mountain fold 41 and the valley fold 42. Moreover, the inner side area | region 44 is an area | region which has the joining site | part 44a extended upward toward the each exterior body 10 and 20 side from the valley fold part 42, and joined to the skin non-facing surface side of the said exterior body. In the example of FIG. 3, the entire inner region 44 is a joint portion 44 a, but it is only necessary that at least a part of the inner region 44 is joined to each of the exterior bodies 10 and 20. The outer region 45 is a region having a joint portion 45 a that extends downward from the mountain fold 41 toward the absorbent main body 30 and is joined to the skin non-facing surface side of the absorbent main body 30. In the example of FIG. 3, a part of the region on the lower end side (the crotch side) of the outer region 45 is a bonding portion 45 a, but the entire outer region 45 is bonded to the absorbent main body 30. Also good. Each joint part 44a and 45a demonstrated here is realizable using well-known adhesives, such as a hot-melt-adhesive.

  In the example shown in FIG. 3, the inner region 44 of each connecting member 40 </ b> A, 40 </ b> B is joined to the skin non-facing surface at the lower end portion in the longitudinal direction of each exterior body 10, 20. Further, the outer region 45 of each of the connecting members 40 </ b> A and 40 </ b> B is joined to the skin non-facing surface of the upper end portion in the longitudinal direction of the absorbent main body 30. In this way, the connecting members 40A and 40B act to connect the exterior bodies 10 and 20 and the absorbent main body 30 together. Here, an example is shown in which the inner region 44 of each of the connecting members 40A and 40B is joined to the lower end side of each of the exterior bodies 10 and 20. However, the inner region 44 can be joined to the upper end side of each of the exterior bodies 10 and 20. The position where the inner region 44 is joined to the skin non-facing surface of each of the exterior bodies 10 and 20 can be designed freely to some extent.

  Returning to FIG. 2, each of the connecting members 40 </ b> A and 40 </ b> B is folded at the mountain fold 41 and the valley fold 42. In this state, the intermediate region 43 has a joint region 43a that is detachably joined to a portion facing the skin facing surface side in at least a part of the entire region in the width direction. In the example shown in FIG. 2, a joining region 43 a is partially formed in the intermediate region 43, and a portion other than that portion is a non-joining region 43 b. For example, referring to the example of FIG. 3, the inner region 44 is located on the skin facing surface side of the intermediate region 43, and at least the intermediate region 43 and the inner region are present in the bonding region 43 a shown in FIG. 2. 44 is joined. In addition, in the joining area | region 43a, it replaces with the inner side area | region 44, or the inner side area | region 44 may be joined with the outer side area | region 45 or the absorptive main body 30 located in the skin non-facing surface side with the inner side area | region 44. Thus, in the joining area | region 43a, each connection member 40A, 40B is fixed to the folded state, It is restrict | limited so that it may not expand | deploy carelessly. By peeling off the joining region 43a, the connecting members 40A and 40B can be developed. FIG. 3 shows a longitudinal sectional view of the non-bonding region 43b.

  In FIG. 2, the joining region 43a is conceptually shaded. In the example shown here, the joining regions 43a are on the left and right sides in the width direction of the region where the absorbent main body 30 is located, in the region where the connecting members 40A and 40B and the exterior bodies 10 and 20 overlap in the thickness direction. It is provided and is arranged so as not to overlap with the absorbent main body 30. That is, in a plan view, a longitudinal range of a portion where each of the exterior bodies 10 and 20, each of the connecting members 40 </ b> A and 40 </ b> B, and the absorbent main body 30 overlaps is a non-joining region 43 b. As described above, the bonding region 43a may be defined as a region having a certain width in the width direction as long as it does not overlap the absorbent main body 30. However, in the pants-type diaper, the above-described side seal portion 4 itself functions as the joining region 43a. For this reason, in a pants-type diaper, it can be said that it is not always necessary to join the connecting members 40 </ b> A and 40 </ b> B and the exterior bodies 10 and 20 using a hot melt adhesive or the like separately from the side seal portion 4. That is, the joining region 43a shown by hatching in FIG. 2 can be omitted.

  According to said structure, the expansion | deployment property of a tack is improved by providing the connection part 40 separately between the absorptive main body 30 and the exterior bodies 10 and 20, and forming a tack | tuck. That is, it can be said that when the absorbent main body 30 is pulled, the connecting portion 40 follows and the tack is developed, so that the tack is easily developed. And if a tack | tuck is expand | deployed, when a tack | tuck is pushed by the clothes etc. which a wearer wears, it will function like a pump and the effect which discharges the moisture accumulated in the inside of a diaper can also be anticipated. Further, by connecting the respective exterior bodies 10, 20 and the absorbent main body 30 by the respective connection members 40A, 40B, when the respective connection members 40A, 40B forming a tack are unfolded, the respective exterior bodies 10, 20 and the absorptive main body 30 can be spaced apart in the longitudinal direction and extended in the longitudinal direction of the disposable diaper. 4 and 5 conceptually show that the connecting members 40A and 40B are expanded, the space defined by the connecting members is expanded, and the exterior bodies 10 and 20 and the absorbent main body 30 are separated from each other. It shows. Thus, it becomes the structure which can expand | deploy the connection members 40A and 40B as needed, so that each exterior body 10 and 20 and the absorptive main body 30 track according to a wearer's motion. Thus, it is possible to effectively prevent a gap from being generated between the wearer's skin and the diaper. Moreover, since the fitting property of the diaper with respect to a wearer's skin increases, a feeling of wear improves. When the joining region 43a described above can be peeled, the joining members 43A and 40B can be developed as shown in FIGS. 4 and 5 by peeling the joining region 43a. Moreover, when the joining area | region 43a mentioned above cannot peel, each connection member 40A, 40B can be expand | deployed as shown in FIG. 4 in the non-joining area | region 43b.

  Further, as shown in FIG. 2, in a state where the connecting members 40 </ b> A and 40 </ b> B are completely folded along the mountain fold 41 and the valley fold 42, the exterior bodies 10 and 20 are in the longitudinal direction of the absorbent main body 30. It is preferable to cover the skin facing surface at the end. That is, the mountain-folded portion 41 (see FIG. 3) of each of the connecting members 40A and 40B extending along the width direction, the edge of the joint region 43a extending along the longitudinal direction, the intermediate region 43, and the outer region 45 are directed downward. A space having a plurality of openings is defined. And the edge part of the longitudinal direction of the absorptive main body 30 can be accommodated in this space. Moreover, although illustration is abbreviate | omitted, the longitudinal direction edge part of the absorber 31 which comprises the absorptive main body 30 may be accommodated in the space defined here. Thereby, it becomes possible to accommodate the bodily fluid and the soft stool which flowed along the longitudinal direction of the absorptive main body 30, and can prevent leaking outside.

  The intermediate region 43 may be bonded to the inner region 44 or the outer region 45 so as not to be peeled off in the bonding region 43a. In this case, in the non-joining region 43b, since the intermediate region 43 is not joined to the part located on the skin facing surface side and the skin non-facing surface side, the connecting members 40A and 40B are provided as necessary. It is possible to develop freely. In this case, for example, when the wearer starts exercising, the tack of each of the connecting members 40A and 40B is developed in the non-joining region 43b. When the non-deployed state and the unfolded state of each connecting member 40A, 40B are repeated by the wearer's movement, the space defined by each connecting member expands or narrows. It functions like this and exhausts the air accumulated in this space. By utilizing the development of the tack in this manner, the moisture accumulated in the space of each connecting member 40A, 40B can be easily discharged, and the air permeability of the portion where the tack is formed can be enhanced. Moreover, although the side seal was carried out except the overlapping part with the exterior bodies 10 and 20 also at the left and right ends in the width direction of the connecting members 40A and 40B, the overlapping part can be peeled off together with the exterior bodies 10 and 20 or cannot be peeled off. A side seal may be used. When the overlapping portion is side-sealed together with the exterior bodies 10 and 20, the joining region 43a can be omitted. Further, the entire longitudinal direction of the left and right end portions of the connecting members 40A and 40B in the width direction may be side-sealed separately from the exterior bodies 10 and 20 so as not to be peeled off.

  Thus, the joining area | region 43a which joins the intermediate | middle area | region 43 and its facing part may be any of temporary joining which can be peeled, and joining which cannot be peeled. Both the detachable temporary bonding and the non-peelable bonding in the bonding region 43a described here can be realized by using a known adhesive such as a hot-melt adhesive, and the application amount and adhesion of the adhesive What is necessary is just to select what can peel and what cannot peel by adjusting force. The detachable joining state is assumed to be peeled in advance, for example, and can join both the intermediate region 43 and the sheet member constituting the facing portion without causing breakage or breakage. Means state. On the other hand, the non-peelable joining state is, for example, a joint that is not supposed to be peeled in advance, and tearing or breakage occurs in the sheet member constituting the intermediate region 43 or the facing portion when it is peeled off. Means state. In addition, although the joining area | region 43a may cover the whole region of the intermediate | middle area | region 43, in that case, the joining area | region 43a joins the intermediate | middle area | region 43 so that peeling is possible with respect to the facing part (namely, temporary joining). is there. In addition, the joining region 43a may be one that joins the intermediate region 43 to the facing portion so as not to be peeled off. In that case, the joining region 43a is partially provided in the intermediate region 43. .

[Sheet stacking structure of connecting part]
Then, with reference to FIG. 6, structures, such as a sheet member which comprises the connection part 40 (connection member 40A, 40B), are demonstrated. FIG. 6 is an enlarged view of the periphery of the rear connecting member 40B shown in FIG. Hereinafter, the structure of the rear side connecting member 40B will be described as an example, but the structure of the rear side connecting member 40B described here can also be applied to the front side connecting member 40A.

  As shown in FIG. 6, the rear connecting member 40B has a structure in which at least two sheet members are laminated in the thickness direction. That is, in the example shown in FIG. 6, the rear connecting member 40 </ b> B has a leak-proof sheet 51 and an outer surface sheet 52 bonded to the skin non-facing surface side.

  The leak-proof sheet 51 is a liquid-impermeable sheet member, and is disposed for the purpose of preventing body fluid from leaking from the rear connection member 40B. The leak-proof sheet 51 is preferably a plastic film made of polyethylene resin or the like, like the back sheet 33 described above. In particular, as the leak-proof sheet 51, it is preferable to use a microporous polyethylene film in which a plurality of fine pores of 0.1 to 4 μm are formed in order to ensure the air permeability of the rear side connecting member 40B. Since the leak-proof sheet 51 is formed of a sheet member having air permeability and liquid impermeability, it is possible to prevent the body fluid from reaching the rear connection member 40B from being leaked and to suppress the occurrence of stuffiness. can do.

  The outer surface sheet 52 is a sheet member mainly composed of a non-woven fabric, and is disposed for the purpose of improving the touch on the skin non-facing surface of the leak-proof sheet 51. Although the nonwoven fabric used here is not specifically limited, An air through nonwoven fabric, a point bond nonwoven fabric, a spun bond nonwoven fabric, an airlaid nonwoven fabric, a melt blown nonwoven fabric, an SMS nonwoven fabric, an SMMS nonwoven fabric, etc. can be mentioned. Basically, as the outer sheet 52, a sheet member having liquid permeability and air permeability and good touch is adopted.

  As shown in FIG. 6, the outer sheet 52 extends in the longitudinal direction toward the waist opening 5 and covers the upper edge 51 a of the leak-proof sheet 51. More specifically, the outer surface sheet 52 has an upper extending portion 52 a that extends beyond the upper end edge 51 a of the leak-proof sheet 51 in the joining portion 44 a of the inner region 44 of the rear side connecting member 40 </ b> B. . In the example shown in FIG. 6, the outer surface sheet 52 is directly joined to the skin non-facing surface of the rear body exterior body 20 at the upper extending portion 52 a.

In Figure 6, in the longitudinal direction of the disposable diaper, the length of the whole joint portion 44a of the inner region 44 by a symbol P _1, indicates the length of the barrier sheet 51 is located in the joint portions 44a by symbol Q _1, the outer surface It indicates the length of the upper extension portion 52a of the seat 52 by symbol _{R 1.} For example, the length _{P 1} of the joint portion 44a is preferably 15mm or more, it can be 15 to 50 mm, 20～45Mm, or a 25 to 40 mm. The joining length to _{Q 1} barrier sheet 51 is preferably 10mm or more, it can be 10 to 40 mm, 15 to 35 mm, or a 20 to 30 mm. The length _{R 1} of the upper extending portion 52a is preferably 1mm or more, it can be 1 to 30 mm, 3 to 25 mm, or a 5 to 20 mm. Further, the ratio of the length of _{R 1} of the upper extending portion 52a to the length _{P 1} of the whole joint portion 44a _(R 1 / _{P 1)} is preferably at least 5%, 5% to 60%, 10 to 50 %, Particularly preferably 30 to 60%.

  Also, as shown in FIG. 6, the outer sheet 52 extends in the longitudinal direction toward the crotch 3 and covers the lower end edge 51 b of the leak-proof sheet 51. More specifically, the outer surface sheet 52 has a lower extending portion 52b extending beyond the lower end edge 51b of the leak-proof sheet 51 at the joining portion 45a of the outer region 45 of the rear side connecting member 40B. Yes. In the example shown in FIG. 6, the outer sheet 52 is directly joined to the skin non-facing surface of the rear body exterior body 20 at the lower extension 52 b.

In Figure 6, in the longitudinal direction of the disposable diaper, the length of the whole joint portion 45a of the outer region 45 by the symbol P _2, the length of the barrier sheet 51 is located in the joint portions 45a by the symbol Q _2, an outer surface It indicates the length of the lower extension portion 52b of the seat 52 by symbol R _2. For example, the length _{P 2} of the joint portions 45a is preferably 15mm or more, it can be 15 to 50 mm, 20～45Mm, or a 25 to 40 mm. The joining length _{Q 2} of the barrier sheet 51 is preferably 10mm or more, it can be 10 to 40 mm, 15 to 35 mm, or a 20 to 30 mm. Length _{R 2} of the lower extension portion 52b is preferably 1mm or more, it can be 1 to 30 mm, 3 to 25 mm, or a 5 to 20 mm. Further, the ratio of the length of _{R 2} of the lower extending portion 52b to the length _{P 2} of the whole joint portion 45a _(R 2 / _{P 2)} is preferably 5% or more, 5% to 60%, 10 It can be made into 50%, and it is especially preferable that it is 30 to 60%.

  In addition, in FIG. 6, the outer surface sheet 52 showed the example extended rather than the leak-proof sheet 51 in both the waist opening part 5 side and the crotch part 3 side in the longitudinal direction of a disposable diaper. However, the outer surface sheet 52 only has to extend beyond the leak-proof sheet 51 on at least one of the waist opening 5 side and the crotch part 3 in the longitudinal direction of the disposable diaper. In other words, the outer sheet 52 only needs to have at least one of the upper extending portion 52a and the lower extending portion 52b.

  As described above, it is possible to avoid the leakage prevention sheet 51 from being exposed by extending the outer sheet 52 from the leakage prevention sheet 51 and covering the edge thereof. By covering the edge of the outer sheet 52 with a good touch, the touch and appearance can be improved.

  In addition, as shown in FIGS. 3 to 6, in the present embodiment, each of the connecting members 40 </ b> A and 40 </ b> B on the front side and the rear side of the disposable diaper is one or a plurality of connecting portion expansion / contractions arranged along the mountain fold portion 41. It is preferable to have the member 46. The connection part expansion / contraction member 46 is an elastic expansion / contraction member such as a thread elastic rubber, and is disposed in the mountain fold part 41 in an extended state along the width direction of the disposable diaper. As described above, since each of the connecting members 40A and 40B is configured by laminating the leak-proof sheet 51 and the outer sheet 52, the connecting portion expansion / contraction member 46 is fixed between the leak-proof sheet 51 and the outer sheet 52. do it. By arranging the connecting portion expansion / contraction member 46 along the mountain-folded portion 41, the contracting action of the connecting portion expansion / contraction member 46 causes the intermediate region 43 of each connection member 40 </ b> A, 40 </ b> B and each exterior body 10, 20. It becomes difficult to produce a gap between them. For this reason, the appearance of the diaper is improved and the fit is improved.

  As shown in FIGS. 1 and 2, a plurality of tammy stretchable members 47 extending along the width direction are arranged in the connecting members 40 </ b> A and 40 </ b> B at predetermined intervals in the longitudinal direction of the disposable diaper. ing. The tammy expansion and contraction member 47 is fixed to the connecting members 40A and 40B in a state of extending along the width direction of the disposable diaper. However, the Tammy stretchable member 47 is not disposed at the center in the width direction of each of the connecting members 40A and 40B, or is partially cut so as not to exhibit stretchability. That is, the Tammy stretchable member 47 is basically located on both sides of the absorbent main body 30 in the width direction. In addition, the tammy stretchable member 47 may partially overlap the both ends of the absorbent main body 30 in the width direction. Each tammy elastic member 47 may be fixed between the leak-proof sheet 51 and the outer surface sheet 52 in the same manner as the connecting part elastic member 46 described above. When the tammy expansion and contraction member 47 contracts, the connecting members 40A and 40B are bent to form a plurality of fine wrinkles (tammy gathers).

[Identification means and design]
FIG. 7 shows extracted connection members 40A and 40B. FIG. 7A schematically shows an unfolded state before the coupling members 40A and 40B are folded, and FIGS. 7B and 7C show a state in which the coupling members 40A and 40B are folded, respectively. Is shown.

  As shown in FIG. 7, a pattern 49 is printed on the connecting members 40A and 40B. The design 49 includes characters, figures, symbols, patterns, colors, or combinations thereof. In the example shown in FIG. 7, the design 49 is printed on the skin non-facing surface of the outer region 45 of the connecting members 40A and 40B. In particular, the pattern 49 is preferably printed on the non-skin facing surface of the leak-proof sheet 51 in order to make printing clear. For example, as shown in FIG. 1, the skin non-facing surface of the outer region 45 of the connecting members 40A and 40B is a part that can be viewed from the front body 1 side or the back body 2 side in the wearing state. For this reason, the freedom degree of design of a disposable diaper can be raised by enabling it to print the arbitrary design 49 on the outer side area | region 45 of 40 A of connection members, and 40B. In addition, by printing the pattern 49 on the non-facing surface of the leak-proof sheet 51 in the outer region 45, it is not necessary to separately prepare a plastic film for pattern printing, thereby reducing the number of components of the disposable diaper. it can. In addition, when a plastic film for design printing is separately provided, there is a concern that the number of sheet members that are overlapped increases and the air permeability and flexibility are lowered. However, according to the above configuration, such a problem can be solved.

  As FIG. 7 shows, connecting member 40A, 40B has the mountain fold part 41 (dashed line) and the valley fold part 42 (one-dot chain line). Further, the connecting members 40A and 40B have a mountain fold 41 and a valley fold 42 as a boundary, an intermediate region 43 located between them, and an inner region 44 located on the waist opening side of the valley fold 42, It is divided into an outer region 45 located on the crotch lower side than the mountain folded portion 41. Here, in the example illustrated in FIG. 7, the identification unit 48 is provided on the skin facing surface 43 c of the intermediate region 43. Further, in the state where the connecting members 40A, 40B are folded along the valley fold portion 42, the identification means 48 is also provided at the facing portion 44b facing the skin facing surface 43c of the intermediate region 43. In the example shown in FIG. 7, the skin non-facing surface of the inner region 44 faces the skin facing surface 43 c of the intermediate region 43. For this reason, the skin non-facing surface of the inner region 44 becomes the “facing portion 44b”. The “facing part 44b” referred to here is not limited to the skin non-facing face of the inner region 44, and for example, the skin non-facing faces of the exterior bodies 10 and 20 can also be the “facing part 44b”. The identification means 48 is not an essential component and can be omitted.

  The identification means 48 is provided mainly for the purpose of making the wearer or assistant of the disposable diaper recognize the developed state of the tack formed on the connecting members 40A and 40B. That is, as shown in FIG. 7C and FIG. 1, when the connecting members 40 </ b> A and 40 </ b> B are folded along the mountain fold 41 and the valley fold 42, the identification unit 48 is not visible from the outside, or It is provided at a position where it is difficult to see. On the other hand, as shown in FIGS. 7A, 7B, and 5, when the connecting members 40A and 40B are deployed, the identification means 48 can be visually recognized from the outside, or easily visible. Become. Thus, by providing the identification means 48 to the part (43c, 44b) that will be exposed to the outside only when the tack is deployed, the wearer or the assistant uses the identification means 48 as a mark to tack. Can be recognized.

The identification means 48 is shown in a form that can be distinguished from other parts. Examples of the identification means 48 are characters, figures, symbols, patterns, concavo-convex patterns, a material different from the sheet member constituting the exterior body, a color different from the sheet member constituting the exterior body, or a combination thereof. “Characters” include Japanese and foreign characters and numbers. The “figure” includes not only a straight line, a curve, a circle, an ellipse, a triangle, a quadrangle, and other polygons, but also patterns such as animals, plants, artifacts, and characters. A “symbol” is a graphic image drawn to indicate a certain matter, and includes, for example, a pictogram. The “pattern” is a decoration in which a predetermined graphic or the like is drawn with repeatability. In the example shown in FIG. 7, a hatched pattern is adopted as the identification means 48. The “concave / convex pattern” is unevenness imparted to the sheet member, and it is particularly preferable that the pattern is formed by the unevenness. As an example of the concavo-convex pattern, an emboss pattern formed by introducing a sheet member between a pair of emboss rolls having concavo-convex on the peripheral surface or between the emboss roll and an anvil roll having a smooth surface on the peripheral surface. Can be mentioned. The “material different from the sheet member constituting the exterior body” is a material that can be distinguished from the sheet member constituting the exterior body. Not only the raw material is different in appearance and touch but also the raw material is different. Even if they are the same, they include those that differ in appearance and feel due to different manufacturing methods and processing methods. The “color different from the sheet member constituting the exterior body” is a color that can be distinguished from the sheet member constituting the exterior body. A color whose brightness is intentionally different is a “different color”. Further, when the sheet member constituting the exterior body has a plurality of different colors, as the identification unit 48, a color different from the color occupying the largest in the exterior body among the plurality of colors may be employed. . Generally, an exterior body is comprised with a white sheet | seat member. Therefore, when coloring the skin facing surface 43c of the intermediate region 43 and the facing portion 44b, it is preferable to adopt a color other than white. “White” refers to a color having an L ^* value of 85 or more in the CIE-L ^* a ^* b ^* color system.

  Moreover, the identification means 48 should just be provided in both or any one of the skin opposing surface 43c of the intermediate | middle area | region 43, and its facing part 44b. Moreover, the identification means 48 does not need to be provided in the whole area | region of the skin opposing surface 43c of the intermediate | middle area | region 43, or its facing part 44b, and should just be provided at least partially. However, as shown in FIG. 7, by providing the identification means 48 over the entire skin facing surface 43c of the intermediate region 43 and the entire facing portion 44b, the developed state of the tack can be easily shown. Moreover, it is preferable that the same thing as the identification means 48 provided in the skin opposing surface 43c of the intermediate | middle area | region 43 and its facing part 44b is not provided in the other site | part of a disposable diaper. Thereby, the identification means 48 can be made conspicuous when the tack is unfolded.

  In addition, as described above, the connecting members 40 </ b> A and 40 </ b> B are configured by attaching the outer sheet 52 to the skin non-facing surface of the leak-proof sheet 51. The leak-proof sheet 51 is made of a plastic film or the like, and the outer sheet 52 is made of a nonwoven fabric or the like. In this case, it is preferable that the identification unit 48 is provided on the non-skin facing surface of the leak-proof sheet 51. For example, identification means 48 such as characters and figures may be printed on the leak-proof sheet 51. Alternatively, a seal printed on the front surface with characters and graphics and coated with glue on the back surface may be used as the identification means 48 and this seal may be affixed to the leak-proof sheet 51. The identification means 48 imparted (printed or the like) to the skin non-facing surface of the leak-proof sheet 51 passes through the outer sheet 52 and is visually recognized by the wearer and the assistant. As the outer sheet 52, a non-woven fabric with a low basis weight may be adopted so that the identification means 48 can be visually recognized. Thus, since the leak-proof sheet | seat 51 is comprised by the plastic film etc., the identification means 48 can be provided clearly. In addition, by covering the leak-proof sheet 51 provided with the identification unit 48 with the outer sheet 52, for example, ink used when printing the identification unit 48 can be prevented from adhering to the wearer's coating.

[First Modification]
Then, with reference to FIG. 8, the 1st modification of each connection member 40A, 40B is demonstrated. FIG. 8 shows an enlarged cross-sectional structure of the rear connection member 40B, but the structure of the rear connection member 40B described here can also be applied to the front connection member 40A.

  As shown in FIG. 8, the rear connection member 40 </ b> B further includes an inner surface sheet 53 in addition to the configuration shown in FIG. 6 and the like. The inner surface sheet 53 is a member bonded to the skin facing surface of the leak-proof sheet 51. The inner surface sheet 53 is a sheet member mainly composed of a nonwoven fabric, and is disposed for the purpose of improving the touch on the skin facing surface of the leak-proof sheet 51. Although the nonwoven fabric used here is not specifically limited, Like the outer surface sheet 52, an air through nonwoven fabric, a point bond nonwoven fabric, a spun bond nonwoven fabric, an airlaid nonwoven fabric, a melt blown nonwoven fabric, an SMS nonwoven fabric, an SMMS nonwoven fabric, etc. can be mentioned. Basically, as the inner surface sheet 53, a sheet member having liquid permeability and air permeability and good touch is employed. In the example shown in FIG. 8, the inner surface sheet 53 is directly joined to the skin non-facing surface of the rear body exterior body 20.

Similarly to the outer surface sheet 52 described above, the inner surface sheet 53 extends in the longitudinal direction from the leakproof sheet 51 toward the waist opening 5 and covers the upper end edge 51 a of the leakproof sheet 51. More specifically, the inner surface sheet 53 has an upper extending portion 53 a that extends beyond the upper end edge 51 a of the leak-proof sheet 51 in the joining portion 44 a of the inner region 44 of the rear side connecting member 40 </ b> B. . As described above, the outer sheet 52 also has the upper extending portion 52a. For this reason, there exists an area where the upper extension part 53a of the inner sheet 53 and the upper extension part 52a of the outer sheet 52 overlap, and both upper extension parts 52a and 53a are joined to each other in this area. Relates upper extending portion 53a of the inner sheet 53, on the length of the _{P 1} overall junction 44a of the inner region 44, the length to _{Q 1} barrier sheet 51 is located in the joint portion 44a, the upper extending portion of the inner sheet 53 53a the length R ₁ is the may be the same extent as the outer sheet 52 described above.

Similarly to the outer sheet 52 described above, the inner sheet 53 extends in the longitudinal direction from the leak-proof sheet 51 toward the crotch 3 and covers the lower edge 51 b of the leak-proof sheet 51. . More specifically, the inner surface sheet 53 has a lower extension portion 53b that extends beyond the lower end edge 51b of the leak-proof sheet 51 at the joint portion 45a of the outer region 45 of the rear connection member 40B. Yes. As described above, the outer sheet 52 also has the lower extension 52b. For this reason, there exists an area where the lower extension part 53b of the inner sheet 53 and the lower extension part 52b of the outer sheet 52 overlap, and in this area, both lower extension parts 52b and 53b are joined together. Yes. Relates lower extending portion 53b of the inner sheet 53, on the length of the _{P 2} across junction 45a of the outer region 45, the length _{Q 2} of the barrier sheet 51 is located in the joint portion 45a, lower extension of the inner sheet 53 the length R ₂ is the output portion 53b, it may be set to the same extent as the outer sheet 52 described above.

[Second Modification]
Then, with reference to FIG. 9, the 2nd modification of the disposable diaper which concerns on this invention is demonstrated. The structure on the back body 2 side described here can also be applied to the front body 1 side. As shown in FIG. 9, the rear connection member 40 </ b> B includes an inner surface leak-proof sheet 54 in addition to the configuration described in FIG. 6. The inner surface leak-proof sheet 54 is a liquid-impermeable sheet member bonded to the skin facing surface of the leak-proof sheet 51. As the inner leak-proof sheet 54, a sheet member made of the same material as the leak-proof sheet 51 described above can be used. In the example shown in FIG. 9, the upper end edges of the leak-proof sheet 51, the outer sheet 52, and the inner leak-proof sheet 54 are aligned. In this example, the lower end edges of the leak-proof sheet 51 and the outer sheet 52 are also aligned. However, although the inner surface leak-proof sheet 54 has such a length that the lower end edge side reaches the skin non-opposing surface of the absorbent main body 30 and is joined thereto, it is more than the leak-proof sheet 51 and the outer sheet 52. It is short.

  Moreover, the example shown in FIG. 9 differs in the structure of the absorptive main body 30 compared with the structure shown in FIG. That is, in this example, the back sheet 33 included in the absorbent main body 30 does not reach the end edge in the longitudinal direction of the absorbent main body 33. The longitudinal edge 33 a of the back sheet 33 is not joined to the top sheet 32, but is joined to the skin non-facing surface of the absorber 31. However, the cover sheet 34 reaches the edge in the longitudinal direction of the absorbent main body 33 and is joined to the end in the longitudinal direction of the top sheet 32. As described above, in the example shown in FIG. 9, the non-existing region 33 b of the back sheet is intentionally formed in which the skin non-facing surface of the absorber 33 is not covered with the back sheet 33. The backsheet absence region 33b is excellent in air permeability and has high flexibility because there is no backsheet 33 that is relatively inferior in air permeability and flexibility.

  Even if the non-existing region 33b of the backsheet in which the skin non-facing surface of the absorbent body 33 is not covered with the backsheet 33 is formed at the longitudinal end of the absorbent main body 30 as in the above configuration, In the example of 9, the leak-proof sheet 51 and the inner-face leak-proof sheet 54 serve instead. That is, since at least the leak-proof sheet 51 included in the rear connecting member 40B overlaps in the thickness direction of the non-existing region 33b of the back sheet, the body fluid can be removed from the region 33b even if the back sheet 33 is not provided. Can be prevented from leaking. The leak-proof sheet 51 and the inner-face leak-proof sheet 54 are preferably joined to the skin non-facing surface of the cover sheet 34 in the non-existing region 33b of the back sheet. In this manner, the air permeability and flexibility at the end of the absorbent main body 30 can be enhanced by intentionally forming the non-existing region 33b of the backsheet. Furthermore, since the leakage preventing sheet 51 and / or the inner leakage preventing sheet 54 are arranged so as to overlap the non-existing region 33b of the back sheet, it functions as a substitute for the back sheet 33, so that leakage of body fluid from the region 33b is prevented. be able to.

  As mentioned above, in this specification, in order to express the content of this invention, embodiment of this invention was described, referring drawings. However, the present invention is not limited to the above-described embodiment, but includes modifications and improvements obvious to those skilled in the art based on the matters described in the present specification.

  The present invention can be applied to disposable diapers such as pants and tapes. Therefore, this invention can be utilized suitably in the manufacturing industry of a disposable diaper.

DESCRIPTION OF SYMBOLS 1 ... Front body 2 ... Back body 3 ... Crotch part 4 ... Side seal part 5 ... Waist opening 6 ... Leg opening part 10 ... Front body exterior body 11 ... Inner sheet 12 ... Outer sheet 13 ... Waist elastic member 20 ... Back body Exterior body 21 ... Inner sheet 22 ... Outer sheet 23 ... Waist elastic member 30 ... Absorptive main body 31 ... Absorber 32 ... Top sheet 33 ... Back sheet 33a ... Edge 33b ... Non-existing area 34 ... Cover sheet 35 ... Side sheet 36 ... three-dimensional gather elastic member 37 ... leg elastic member 40 ... connecting part 40A ... front side connecting member 40B ... rear side connecting member 41 ... mountain fold part 42 ... valley fold part 43 ... intermediate area 43a ... joining area 43b ... non-joining area 43c ... skin Opposing surface 44 ... inner region 44a ... joining part 44b ... facing part 45 ... outer side region 45a ... joining part 46 ... connecting part stretchable member 47 ... Tammy elastic member 48 ... Identification means 49 ... Pattern 51 ... Leakproof sheet 51a ... Upper edge 51b ... Lower edge 52 ... Outer sheet 52a ... Upper extension part 52b ... Lower extension part 53 ... Inner sheet 53a ... Upper extension Protruding part 53b ... Lower extending part 54 ... Internal leak-proof sheet 100 ... Disposable diaper

Claims (5)

A front body exterior body (10) positioned on the wearer's abdomen side, a rear body exterior body (20) positioned on the wearer's back side, and an absorbent main body (30) positioned on the wearer's crotch. Disposable diapers,
The absorbent main body (30) has a mountain fold (41) extending in the width direction of the disposable diaper with respect to both or any one of the front body exterior body (10) and the rear body exterior body (20). ) And a connecting part (40) having a valley fold part (42),
A disposable diaper in which a pattern (49) is printed on the connecting part (40). The connecting portion (40) has an intermediate region (43) located between the mountain fold (41) and the valley fold (42),
At least a part of or both of the skin facing surface (43c) of the intermediate region (43) and the facing portion (44b) facing the skin facing surface (43c) are distinguishable from other portions. The disposable diaper according to claim 1, wherein an identification means (48) is provided. The identification means (48) is a character, a figure, a symbol, a pattern, an uneven pattern, a material different from the sheet member constituting the exterior body, a color different from the sheet member constituting the exterior body, or a combination thereof The disposable diaper of Claim 2 containing this. The connecting portion (40) is a sheet in which a leak-proof sheet (51) and an outer sheet (52) located on the skin non-facing surface of the leak-proof sheet (51) are laminated in the thickness direction,
The disposable diaper according to claim 2 or 3, wherein the identification means (48) is provided on a non-skin facing surface of the leak-proof sheet (51). The intermediate region (43) faces the skin facing surface side of the intermediate region (43) in a state where the connecting portion (40) is folded at the mountain fold (41) and the valley fold (42). 5. The device according to claim 2, further comprising: a joining region (43 a) joined to the part and the part facing the skin non-facing surface side or to any one of the parts so as to be peelable or non-peelable. The disposable diaper described.

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