JP2024158426A - Paper diaper - Google Patents

Abstract

To provide a paper diaper that can suppress a tightening feeling and a steamed feeling during wearing and can suppress manufacturing costs.SOLUTION: The present disclosure pertains to a paper diaper 10 including: an absorbent body 30 in which an absorbent is arranged between a liquid permeable top sheet and a liquid impermeable back sheet; and an exterior body 20 supporting the absorbent body 30. When the total weight of the paper diaper 10 is A and the weight of the absorbent body 30 is B, a value obtained by an expression (B/A) is equal to or greater than 0.6 and less than 0.9.SELECTED DRAWING: Figure 2

Description

This disclosure relates to disposable diapers.

Patent Document 1 discloses a pants-type disposable diaper. This diaper has an absorbent body and an exterior member joined to the absorbent body. The exterior member has a crotch exterior part, a front body part, and a rear body part. The absorbent body has, in order from the skin side in the thickness direction, a liquid-permeable top sheet, a liquid-permeable second sheet, an absorbent core, a liquid-impermeable back sheet, and a crotch elastic member covering sheet. The crotch exterior part of the exterior member is formed of a spunbond nonwoven fabric or the like. The front body part has a ventral inner layer sheet, a ventral reinforcing sheet, a ventral outer layer sheet, multiple ventral waist elastic members, and multiple waist elastic members, which are layered in the thickness direction. The rear body part has a back inner layer sheet, a back reinforcing sheet, a back outer layer sheet, multiple back waist elastic members, and multiple waist elastic members, which are layered in the thickness direction, like the front body part.

JP 2022-066375 A

As described in Patent Document 1, conventional pants-type disposable diapers (paper diapers) are equipped with a sturdy exterior member (outer body) and gathers (elastic members) to prevent the paper diaper from slipping off the body or coming off after excretion (absorption). For this reason, when putting on the diaper, it is necessary to spread out the elastic members such as gathers, and a feeling of tightness occurs while wearing it, and a stuffy feeling occurs due to the tight fitting of the exterior body. In addition, paper diapers are sometimes worn over regular underwear, in which case the feeling of tightness and stuffiness increases further, decreasing comfort while wearing them. Thus, conventional paper diapers have the problem that the sturdy exterior body and gathers make them difficult to put on and comfortable to wear, and are expensive.

Therefore, the present disclosure aims to provide a disposable diaper that can reduce the feeling of tightness and stuffiness while being worn and can reduce manufacturing costs.

In order to solve the above problems, a first aspect of the present invention is a disposable diaper comprising an absorbent body having an absorbent disposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, and an outer body supporting the absorbent body, wherein the value obtained by the following formula (1) when the total weight of the disposable diaper is A and the weight of the absorbent body is B is 0.6 or more and less than 0.9.
B/A...(1)

A second aspect of the present invention is a disposable diaper according to the first aspect, wherein the value obtained by the following formula (2) when the area of the outer body in an unfolded state is C and the area of the absorbent body is D is 0.3 or more and less than 0.8.
D/C...(2)

This disclosure makes it possible to provide a disposable diaper that reduces the feeling of tightness and stuffiness while being worn and can reduce manufacturing costs.

1 is a front external perspective view of a disposable diaper according to an embodiment of the present invention; FIG. 2 is a plan view of the disposable diaper of FIG. 1 in an unfolded state, seen from the skin side. FIG. 3 is a cross-sectional view taken along the line III-III of FIG. 2.

Below, we will explain a disposable diaper according to one embodiment of the present invention with reference to the drawings.

In this specification, wearing a paper diaper means the state in which the paper diaper is worn on the body, regardless of whether the body fluid is absorbed before, during, or after absorption. In addition, the "front side" means the direction that corresponds to the wearer's stomach when the paper diaper is worn, and the "rear side" means the direction that corresponds to the wearer's back. In addition, the "upper side" means the direction that corresponds to the wearer's head when the paper diaper is worn, and the "lower side" means the direction that corresponds to the wearer's feet when the paper diaper is worn. In addition, the left-right direction means the left-right direction as seen from a wearer facing forward. In addition, the longitudinal direction of each component of the paper diaper means the longitudinal direction when the paper diaper is unfolded (as shown in FIG. 2), and is the direction along the arrow X in the figure. In addition, the width direction of each component of the paper diaper means the direction (direction along the left and right) that intersects (is perpendicular to) the longitudinal direction when the paper diaper is unfolded, and is the direction along the arrow Y in the figure. The thickness direction of each component of the disposable diaper refers to the direction in which the components are stacked, and refers to the direction along the arrow Z in the figure. The "skin side" refers to the thickness direction toward the wearer's body when the disposable diaper is worn, and the "non-skin side" refers to the thickness direction opposite to the skin side. Body fluids refer to liquids discharged from the body to the outside, such as urine, blood, and water in loose stools.

Fig. 1 is a front perspective view of a disposable diaper according to one embodiment of the present invention. Fig. 2 is a plan view of the disposable diaper of Fig. 1 in an unfolded state, as seen from the skin side. Fig. 3 is a cross-sectional view taken along the line III-III in Fig. 2. Note that each drawing does not stipulate the size relationship between the components of the disposable diaper, and the dimensions of each component can be appropriately selected from a wide range depending on the purpose of the disposable diaper, the age of the intended wearer, etc.
[Disposable diapers]

The disposable diaper 10 according to the present disclosure is a disposable diaper 10 that is intended to be worn over the disposable diaper 10 with other clothing that provides support for holding the disposable diaper 10 against the wearer's body. An example of the other clothing is stretchy underwear. Note that the other clothing is not limited to stretchy underwear, and may be any clothing that provides support for holding the disposable diaper 10 against the wearer's body.

1 and 2, the disposable diaper 10 according to this embodiment includes an exterior body 20 constituting a pants-type outer shape, and an absorbent body 30 that absorbs bodily fluids while being supported by the exterior body 20. Note that in this embodiment, the disposable diaper according to the present disclosure is applied to a pants-type disposable diaper 10, but is not limited to this, and may be applied to a type of disposable diaper in which the front and rear width directions of the exterior body are in an unfolded state before being worn, and are detachably fastened to each other when worn.
[Exterior body]

As shown in FIG. 1 and FIG. 2, the exterior body 20 is a member that forms the outer shape of the disposable diaper 10 when worn. The exterior body 20 is made of at least nonwoven fabric. For example, the exterior body 20 may be formed by laminating an exterior nonwoven fabric sheet on the non-skin side, an interior nonwoven fabric sheet on the skin side, and a plurality of elastic stretch members such as rubber threads interposed between the exterior nonwoven fabric sheet and the interior nonwoven fabric sheet. For the exterior nonwoven fabric sheet and the interior nonwoven fabric sheet, nonwoven fabrics such as thermal bond nonwoven fabric, air-through nonwoven fabric, and spunbond nonwoven fabric, preferably air-through nonwoven fabric or spunbond nonwoven fabric made of thermoplastic resin such as polypropylene, polyester, and polyethylene, can be used. Alternatively, the exterior body 20 may be a stretch nonwoven fabric obtained by sandwiching and bonding a stretch film (e.g., polyurethane film) between two nonwoven fabric sheets. In addition to the exterior nonwoven fabric sheet and the interior nonwoven fabric sheet, an auxiliary sheet that covers the periphery of the absorbent body 30 described later may be provided in the exterior body 20.

The exterior body 20 has a ventral region 21 located in front of the wearer's abdomen when worn, a dorsal region 22 located behind the wearer's back, and a crotch region 23 located between the wearer's legs. The left and right ends of the ventral region 21 and the left and right ends of the dorsal region 22 are joined to each other (for example, by ultrasonic bonding) to form left and right side seal portions 24. In this way, the exterior body 20 of this embodiment forms an overall pants-type outer shape as shown in FIG. 1 by joining the widthwise ends of the ventral region 21 and the dorsal region 22 to each other.

As described above, this embodiment is based on the premise that other clothing will be worn over the disposable diaper 10, so the outer body 20 does not need any tightening force to hold the disposable diaper 10 against the body when it has absorbed bodily fluids and increased in weight so that it does not fall off.

It is preferable that the dimension L1 in the longitudinal direction (direction along the arrow X in FIG. 2) of the exterior body 20 when unfolded is 600 mm or more and 800 mm or less. That is, the dimension L2 in the longitudinal direction of the ventral region 21 and the dorsal region 22 of the exterior body 20 is set to be shorter than a general dimension. For example, in this embodiment, the dimension L2 in the longitudinal direction of the ventral region 21 and the dorsal region 22 of the exterior body 20 is set to 100 mm. It is preferable that the dimension W1 in the width direction (direction along the arrow Y in FIG. 2) of the exterior body 20 when unfolded is 450 mm or more and 900 mm or less. By setting the dimension W1 in the width direction of the exterior body 20 when unfolded in the above range, it is possible to provide adult paper diapers 10 in various sizes such as S size, M size, and L size.

As shown in FIG. 2, the exterior body 20 has a symmetrical shape in the unfolded state before the side seal portion 24 is joined. The ventral region 21 and the dorsal region 22 are positioned at positions spaced apart from each other in the longitudinal direction, and the crotch region 23 is located between the ventral region 21 and the dorsal region 22. The side seal portions 24 are provided at both ends in the width direction of the ventral region 21 and the dorsal region 22 and extend along the longitudinal direction. The absorbent body 30, which will be described later, is joined to the skin side of the crotch region 23 of the exterior body 20. In the following description, the directions of the exterior body 20 refer to the directions when it is worn by a wearer (as shown in FIG. 1).

The outer body 20 has a waist opening 25 at the upper end through which the wearer's torso passes when worn, and left and right leg openings 26a, 26b through which the wearer's legs pass. The waist opening 25 is defined by the upper edges of the abdominal region 21 and the dorsal region 22, and is stretchable in the circumferential direction. The left and right leg openings 26a, 26b are defined by both left and right end edges of the crotch region 23, and are stretchable in the circumferential direction. The left and right side seal portions 24 extend vertically from the waist opening 25 to the left and right leg openings 26a, 26b.

As shown in Fig. 1 and Fig. 2, an elastic stretch member 27 stretchable in the circumferential direction of the waist opening 25 is provided at the upper edge of the abdominal region 21 and the back region 22 along the circumferential direction of the waist opening 25. In addition, an elastic stretch member 28 stretchable in the circumferential direction of the left and right leg openings 26a, 26b is provided at both left and right end edges of the crotch region 23 along the circumferential direction of the left and right leg openings 26a, 26b. In this embodiment, a row of elastic stretch members 27 is provided at the upper edge of the abdominal region 21 and the back region 22 along the circumferential direction of the waist opening 25, and a row of elastic stretch members 28 is provided at both left and right end edges of the crotch region 23 along the circumferential direction of the left and right leg openings 26a, 26b. The row of elastic stretch members 27, 28 may be composed of one elastic stretch member or may be composed of multiple elastic stretch members arranged in series. Each of the elastic stretch members 27, 28 is joined to the exterior nonwoven fabric sheet and the interior nonwoven fabric sheet that constitute the exterior body 20. As the elastic stretch members 27, 28, for example, thread-like, string-like, or flat-shaped members made of natural rubber, synthetic rubber, polyurethane, etc. can be appropriately used. As described above, when the exterior body 20 is made of a stretch nonwoven fabric, since it has a stretchable film (for example, a polyurethane film), the elastic stretch members 27, 28 do not need to be provided.
[Absorbent body]

2 and 3, the absorbent body 30 is a member that mainly absorbs bodily fluids, has a roughly belt-like shape in the front-to-rear direction that covers the wearer's crotch area from the front, bottom, and back, and is placed on the skin side of at least the crotch region 23 of the exterior body 20 and joined to the exterior body 20. The absorbent body 30 is mainly placed on the skin side of the crotch region 23 of the exterior body 20, but a part of it (front and rear ends) may extend to the ventral region 21 or dorsal region 22 of the exterior body 20.

The longitudinal dimension L3 of the absorbent body 30 is preferably 300 mm or more and 500 mm or less. The widthwise dimension W2 of the absorbent body 30 is preferably 100 mm or more and 300 mm or less. By setting the dimensions of the absorbent body 30 within the above ranges, it is possible to provide disposable diapers 10 for adults in various sizes, such as S size, M size, and L size.

The absorbent body 30 includes a liquid-permeable top sheet 31 on the skin side, a liquid-impermeable back sheet 32 on the non-skin side, and an absorbent body 33 disposed between the top sheet 31 and the back sheet 32.
(Top sheet)

The top sheet 31 is a sheet-like substrate having such liquid permeability that bodily fluids move to the absorbent 33. Examples of the substrate include nonwoven fabrics such as thermal bonded nonwoven fabrics, composite nonwoven fabrics in which thermal bonded nonwoven fabrics/spunbonded nonwoven fabrics are laminated, perforated films such as perforated polyethylene films, foamed films such as polyethylene foams and urethane foams, or composite sheets in which these are laminated. In addition, the top sheet 31 may be embossed or perforated on the surface in order to improve liquid permeability. As a method for performing these embossing and perforation processes, known methods can be performed without limitation. In addition, in order to reduce irritation to the skin, the top sheet 31 may contain lotions, antioxidants, anti-inflammatory components, pH adjusters, antibacterial agents, moisturizers, etc.
(Back seat)

The back sheet 32 is a sheet-like substrate having liquid impermeability so that the body fluid held by the absorbent 33 does not leak to the non-skin side. Examples of the substrate include a resin film and a composite sheet in which a resin film and a nonwoven fabric are laminated. The nonwoven fabric used in the composite sheet is not particularly limited in manufacturing method, and examples thereof include composite nonwoven fabrics in which multiple identical and/or different nonwoven fabrics are laminated, such as spunbond nonwoven fabric, meltblown nonwoven fabric, spunbond nonwoven fabric/meltblown nonwoven fabric, spunbond nonwoven fabric/meltblown nonwoven fabric/spunbond nonwoven fabric, and composite materials thereof. Examples of the resin film include polyester, polyvinyl alcohol, polyethylene, polypropylene, and composite films of polyethylene and polypropylene. In addition, in order to prevent stuffiness during wearing, it is preferable that the back sheet 32 has breathability. In order to provide breathability to the back sheet 32, for example, a filler may be blended into the resin film of the substrate, or the back sheet 32 may be embossed. As the filler, calcium carbonate can be used, and the method for blending the filler can be any known method without any restrictions.
(Absorbent)

The absorbent 33 includes a body fluid absorbing material, and preferably includes a base material and a body fluid absorbing material held by the base material. The body fluid absorbing material is not particularly limited as long as it absorbs and holds body fluids, but examples thereof include fluff pulp and highly absorbent resin (Super Absorbent Polymer (SAP)). The base material of the absorbent 33 is not particularly limited as long as it is generally used in absorbent articles such as sanitary napkins, diapers, and urine pads, and is formed from materials such as fluff pulp, cotton, rayon, acetate, tissue, absorbent paper, and hydrophilic nonwoven fabric. Among these, fluff pulp is preferably used from the viewpoint of absorbency. Examples of fluff pulp include wood pulp, synthetic fiber, polymer fiber, non-wood pulp, etc., which have been defibrated into a cotton-like state.

There are no particular limitations on the SAP as long as it can absorb body fluids and prevent backflow, and examples of the SAP include those made from materials such as polyacrylates, polyaspartates, (starch-acrylic acid) graft copolymers, (acrylic acid-vinyl alcohol) copolymers, (isobutylene-maleic anhydride) copolymers, and saponified products thereof. Among these, polyacrylates are preferred from the viewpoint of absorption per weight, and sodium polyacrylates are more preferred. SAPs can be used alone or in combination of two or more types.

The absorbent 33 preferably contains a base material and SAP, and examples of its configuration include a base material formed by mixing SAP particles into the base material, and an SAP sheet with SAP particles fixed between the base material. From the viewpoint of preventing the SAP particles from falling off and stabilizing the shape of the absorbent 33, it is preferable to wrap the absorbent 33 in a carrier sheet. SAP may also be formed into a fibrous form and mixed into the base material. The base material of the carrier sheet may be any material that has hydrophilic properties, and examples of the base material include hydrophilic nonwoven fabrics such as tissue, absorbent paper, and airlaid nonwoven fabrics. When the absorbent 33 has multiple carrier sheets, the base materials of the carrier sheets may be the same or different.

The shape of the absorbent 33 is not particularly limited, and examples include a rectangular shape, an hourglass shape, an I-shape, a rectangular shape with rounded corners, an oval shape, an ellipse shape that is long in one direction, etc. The absorbent 33 may be used in two or more layers.

The absorbent body 30 may include a pair of three-dimensional gathers 34 for preventing side leakage of bodily fluids. The three-dimensional gathers 34 may have their outer widthwise ends fixed to the skin-side surface of the backsheet 32 and their middle widthwise portions fixed to the skin-side surface of the topsheet 31, and their inner widthwise ends serving as free ends extending to the skin-side surface of the topsheet 31. By configuring the three-dimensional gathers 34 in this manner, the vicinity of the free ends of the three-dimensional gathers 34 are given standing ability, making them deformable to fit the body shape of the wearer.
(The ratio of the weight of the absorbent body to the total weight of the disposable diaper)

The total weight A of the disposable diaper 10 includes the weight B of the absorbent body 30 and the weight E of the exterior body 20 (A = B + E). When the total weight of the disposable diaper 10 is A and the weight of the absorbent body 30 is B, the value obtained by the following formula (1) is 0.6 or more and less than 0.9.
B/A...(1)
That is, the ratio (B/A×100) of the weight B of the absorbent body 30 to the total weight A of the disposable diaper 10 is 60% or more and less than 90%. The lower limit of the value obtained by the above formula (1) is preferably 0.7 or more, and more preferably 0.8 or more.
(Ratio of the area of the absorbent body to the area of the outer body in the unfolded state)

The absorbent main body 30 is disposed inside the outer edge of the exterior body 20 in the unfolded state (the state shown in FIG. 2 ). When the area (projected area) of the exterior body 20 in the unfolded state is C and the area of the absorbent main body 30 is D, the value obtained by the following formula (2) is preferably equal to or greater than the lower limit of 0.3 and is preferably less than the upper limit of 0.8.
D/C...(2)
That is, the ratio (D/C×100) of the area D of the absorbent main body 30 to the area C of the exterior body 20 in the deployed state is preferably 30% or more and less than 80%. The lower limit of the value obtained by the above formula (2) is more preferably 0.5 or more, and even more preferably 0.7 or more.

In the disposable diaper 10 configured as described above, the value obtained by the above formula (1) when the weight B of the absorbent body 30 is relative to the total weight A of the disposable diaper 10 is 0.6 or more and less than 0.9. The weight B of the absorbent body 30 depends largely on the size of the absorbent body 30 and the amount of the absorbent body 33, while the weight E of the exterior body 20 depends largely on the size of the nonwoven fabric and the amount of the elastic stretch member. Since it is assumed that the disposable diaper 10 according to the present disclosure is worn over the disposable diaper 10 with other clothing that serves as support to hold the disposable diaper 10 against the wearer's body, the size of the absorbent body 30 and the amount of the absorbent body 33 are set to the size and amount necessary to absorb bodily fluids, and the holding force of the exterior body 20 on the wearer's body can be kept to a minimum. It is sufficient for the exterior body 20 to maintain the shape of the disposable diaper 10 so that the absorbent body 30 is in an appropriate position when worn. Therefore, when setting the value obtained by the above formula (1) to a value within the above range, the weight E of the exterior body 20 is adjusted to set the value obtained by the above formula (1) to a value within the above range.

Since the value obtained by the above formula (1) is less than 0.9, the ratio of the weight E of the outer body 20 to the total weight A of the disposable diaper 10 can be ensured to be at least 10%. Therefore, the outer body 20 can be ensured to be large enough to be worn around the waist of the wearer.

In addition, since the value obtained by the above formula (1) is 0.6 or more, the ratio of the weight E of the exterior body 20 to the total weight A of the disposable diaper 10 can be kept to 40% or less. For example, in this embodiment, the longitudinal dimension L2 of the ventral region 21 and the dorsal region 22 of the exterior body 20 is set to 100 mm so that the longitudinal dimension L1 of the exterior body 20 is 800 mm or less, thereby reducing the weight E of the exterior body 20 and increasing the ratio of the weight B of the absorbent main body 30 to the total weight A of the disposable diaper 10. In this way, the size of the exterior body 20 can be reduced, thereby reducing the feeling of tightness and stuffiness during wear and reducing manufacturing costs.

In addition, since the value obtained by the above formula (1) is 0.6 or more, the number and rows of the elastically stretchable members 27, 28 provided on the exterior body 20 can be reduced in order to reduce the weight E of the exterior body 20. This reduces the weight E of the exterior body 20 and increases the ratio of the weight B of the absorbent body 30 to the total weight A of the disposable diaper 10. In this embodiment, one row of elastically stretchable members 27 is provided at the waist opening 25, and one row of elastically stretchable members 28 is provided at the left and right leg openings 26a, 26b. In this way, the number and rows of the elastically stretchable members 27, 28 provided on the exterior body 20 can be reduced, making it easier to put on, reducing the feeling of tightness and stuffiness while wearing, and reducing manufacturing costs.

Therefore, according to this embodiment, it is possible to provide a disposable diaper 10 that can reduce the feeling of tightness and stuffiness while being worn and can reduce manufacturing costs.

In addition, by reducing the size of the exterior body 20, bulkiness can be reduced when the other clothing is worn over the disposable diaper 10.

In addition, because the disposable diaper 10 is designed to be worn over the other clothing, there is no need to attach it to the skin side of underwear, etc., as opposed to absorbent pads such as urine pads and light incontinence pads. In addition, because the disposable diaper 10 is provided with an exterior body 20, it can be easily attached in an appropriate position, as opposed to absorbent pads, and is also easy to change after absorbing bodily fluids.

In addition, since the disposable diaper 10 is designed to be worn over the other clothing items mentioned above, for example, by wearing regular underwear (the other clothing items mentioned above) over the disposable diaper 10, the wearer will be less aware that they are wearing the disposable diaper 10 and will be able to maintain their dignity in the same way as when they are healthy.

In addition, by setting the value obtained by the above formula (2) where the area of the outer body 20 in the unfolded state is C and the area of the absorbent body 30 is D to less than 0.8, it is possible to ensure that the area C of the outer body 20 is at least large enough to be worn around the waist of the wearer.

In addition, by setting the value obtained by the above formula (2) to 0.3 or more, the area C of the exterior body 20 can be reduced, thereby reducing the feeling of tightness and stuffiness while wearing the garment and reducing manufacturing costs.

In this embodiment, the paper diaper according to the present disclosure is applied to a pants-type paper diaper 10, but is not limited thereto. For example, the paper diaper according to the present disclosure may be applied to a tape-fastened paper diaper in which both sides of the width direction of the exterior body are fastened with tape. In this case, instead of the left and right side seal parts 24 of the above embodiment, a mechanical fastener may be provided at both ends of the width direction of at least one of the ventral region 21 and the dorsal region 22 of the exterior body 20. Alternatively, the paper diaper according to the present disclosure may be a paper diaper that is worn by tying it with a string, and in this case, instead of the left and right side seal parts 24 of the above embodiment, an attachment means such as a tie string for removably attaching the paper diaper to the body side may be provided at both ends of the width direction of at least one of the ventral region 21 and the dorsal region 22 of the exterior body 20.

The present invention has been described above based on the above embodiment, but the present invention is not limited to the contents of the above embodiment, and can be modified as appropriate without departing from the scope of the present invention. In other words, all other embodiments, examples, and operational techniques made by those skilled in the art based on this embodiment are naturally included in the scope of the present invention.

The present invention will be described in detail below with reference to examples. Note that the present invention is not limited to the examples shown below.

Disposable diapers of Examples 1-3 and Comparative Examples 1 and 2 were created. Twenty monitors were asked to wear the disposable diapers of Examples 1-3 and Comparative Examples 1 and 2, and to wear underwear over the disposable diapers while wearing them. The following two items (feeling of tightness, and adhesion of the absorbent body to the body after urination) were then evaluated.

The "tightness" was evaluated on a four-level sensory scale based on the number of monitors who, among the 20 monitors, evaluated it as "feeling of tightness is weak and comfortable." The evaluation criteria are as follows:
◎: 16 or more monitors felt that it was "weakly tight and comfortable" ○: 11 to 15 monitors felt that it was "weakly tight and comfortable" △: 6 to 10 monitors felt that it was "weakly tight and comfortable" ×: 5 or less monitors felt that it was "weakly tight and comfortable"

The "adhesion of the absorbent body to the body after urination" was evaluated using a 4-level sensory evaluation based on the number of monitors out of 20 who evaluated the absorbent body as "adhesive and no leakage even after multiple urinations." The evaluation criteria are as follows:
◎: 16 or more monitors felt that the fit was strong and no leakage occurred even with multiple urinations. ○: 11 to 15 monitors felt that the fit was strong and no leakage occurred even with multiple urinations. △: 6 to 10 monitors felt that the fit was strong and no leakage occurred even with multiple urinations. ×: 5 or less monitors felt that the fit was strong and no leakage occurred even with multiple urinations.

The results are shown in Table 1.

From the above, it has been confirmed that the disposable diaper of the present invention can reduce the feeling of tightness and stuffiness while wearing it, and can reduce manufacturing costs.

10: Disposable diaper 20: Outer body 30: Absorbent body 31: Top sheet 32: Back sheet 33: Absorbent body

Claims (2)

A paper diaper comprising an absorbent body in which an absorbent body is disposed between a liquid-permeable top sheet and a liquid-impermeable back sheet, and an exterior body supporting the absorbent body,
A disposable diaper, wherein a value obtained by the following formula (1), where A is a total weight of the disposable diaper and B is a weight of the absorbent body, is 0.6 or more and less than 0.9.
B/A...(1) The disposable diaper according to claim 1, characterized in that, when the area of the outer body in an unfolded state is C and the area of the absorbent body is D, the value obtained by the following formula (2) is 0.3 or more and less than 0.8.
D/C...(2)