JP2024035845A - Disposable diaper - Google Patents

Abstract

To provide a disposable diaper that effectively exhibits insect repelling effect on the periphery of legs of a wearer while reducing the risk of excessive use of an insect repellent.SOLUTION: A disposable diaper (1) has a longitudinal direction, a width direction, and a thickness direction that intersect each other in an unfolded and stretched state, and comprises a one-side waist part formed on one side of the longitudinal direction, an other-side waist part formed on the other side of the longitudinal direction, and a crotch part. The disposable diaper is provided with an insect repellent (AM) so that, in a test on the number of insects attracted to the disposable diaper (1) within 20 minutes after it is taken out of a package, the average number of insects fixed to the crotch part is less than the average number of insects fixed to the one-side waist part and the other-side waist part.SELECTED DRAWING: Figure 2

Description

The present invention relates to disposable diapers.

Conventionally, disposable absorbent articles that absorb excrement such as feces and urine have been known. Patent Document 1 discloses a disposable absorbent article containing insect repellent microcapsules manufactured by microencapsulating a substance exhibiting an insect repellent effect, which effectively prevents pests from entering the absorbent article during distribution and storage. It is known to prevent

Special Publication No. 2012-522618

The insect repellent effect of absorbent articles is also required while being worn. In particular, disposable diapers are worn by infants and the elderly, whose legs (particularly their thighs and shins) tend to be more susceptible to insect bites than their faces. Therefore, the insect repellent effect of an absorbent article is required even while being worn. There is a possibility that manufacturing costs will increase.

The present invention has been made in view of the above-mentioned problems, and its purpose is to reduce the risk of excessive use of insect repellents provided in disposable diapers, and to protect the wearer's leg area. The objective is to effectively exhibit the insect repellent effect on the insects.

The main invention for achieving the above object has a longitudinal direction, a width direction, and a thickness direction that intersect with each other in a deployed state and an extended state, and a one-side girth part provided on one side in the longitudinal direction; The disposable diaper is provided with an insect repellent and an insect repellent, and the disposable diaper is provided with an insect repellent and is used within 20 minutes after being removed from the package. The disposable diaper is characterized in that the average number of insects settled in the crotch region is smaller than the average number of insects settled in the one side waistline portion and the other side waistline portion in a test for the number of insects attracted.
The main invention for achieving the above object has a longitudinal direction, a width direction, and a thickness direction that intersect with each other in a deployed state and an extended state, and a one-side girth part provided on one side in the longitudinal direction; A disposable diaper comprising an absorbent core and a second side girth section provided on the other side in the longitudinal direction, wherein an insect repellent is provided, and the length in the longitudinal direction and the width direction is 1 cm. a square reference area, a square comparison area with a length of 1 cm in the longitudinal direction and the width direction, and an end area on the other side; overlaps with the absorbent core and is located between the center position of the disposable diaper and the other end of the absorbent core in the longitudinal direction, and the other end region has the other side waist circumference A region from one side end to the other side end in the width direction of the disposable diaper, and a region having a length of 1 cm from the other end of the disposable diaper to the one side, and the other side The disposable diaper is characterized in that the basis weight of the repellent in the reference area is higher than the basis weight of the repellent in the comparison area, no matter where the comparison area is placed in the side edge area. .
The main invention for achieving the above object has a longitudinal direction, a width direction, and a thickness direction that intersect with each other in a deployed state and an extended state, and a one-side girth part provided on one side in the longitudinal direction; The disposable diaper is provided with an insect repellent and an insect repellent, and the crotch portion is provided with an insect repellent, and the crotch portion is provided with an insect repellent, and the crotch portion is provided with an insect repellent. a skin-side sheet portion and a skin-side sheet portion adjacent to the non-skin-side sheet portion from the skin side; the non-skin-side sheet portion and the skin-side sheet portion are joined with an adhesive; The crotch area includes one side crotch area and the other side crotch area, and the one side crotch area is an area from the one end of the crotch area to the center position of the disposable diaper in the longitudinal direction, The other side crotch area is a region from the other side end of the crotch section to the center position of the disposable diaper in the longitudinal direction, and includes the non-skin side sheet portion and the A disposable item characterized in that a maximum value of peel strength between the non-skin side sheet portion and the skin side sheet portion in the entire region of the other side crotch region is higher than a maximum value of peel strength between the skin side sheet portion and the skin side sheet portion. It's a diaper.
Other features of the present invention will become apparent from the description of this specification and the accompanying drawings.

According to the present invention, it is an object of the present invention to provide a disposable diaper that can effectively exert a repellent effect around the wearer's legs while reducing the risk of using excessive insect repellent.

1 is a schematic perspective view of a pants-type disposable diaper 1. FIG. FIG. 3 is a view of the diaper 1 in a stored state seen from the back side. FIG. 2 is a schematic plan view of the diaper 1 in an unfolded and stretched state, viewed from the skin side. 3 is a schematic cross-sectional view taken along the center line CC in FIG. 2. FIG. FIG. 2 is a diagram illustrating an attracting insect count test. FIG. 6A is a diagram showing the results of a test for the number of insects attracted to the diaper 1 within 20 minutes after being taken out of the package. FIG. 6B is a diagram showing the results of a test for the number of insects attracted to the diaper 1 after 4 hours had passed since it was taken out of the package. FIG. 3 is a diagram illustrating a reference area aa and a comparison area ab. It is a figure explaining each area in diaper 1. It is a figure explaining each area in diaper 1.

From the description of this specification and the attached drawings, at least the following matters will become clear.
(Aspect 1)
In the unfolded state and the stretched state, the body has a longitudinal direction, a width direction, and a thickness direction that intersect with each other, and has one side girth part provided on one side in the longitudinal direction and the other side provided on the other side in the longitudinal direction. A disposable diaper comprising a side waist area and an inseam area, which is equipped with an insect repellent, and an insect attraction test of the disposable diaper within 20 minutes after taking it out of the package, and the average of the inseam area. The disposable diaper is characterized in that the number of colonized insects is smaller than the average number of colonized insects on the one side waistline portion and the other side waistline portion.

According to the disposable diaper of aspect 1, it is possible to effectively exert a repellent effect around the wearer's legs while reducing the risk of using excessive insect repellent.

(Aspect 2)
In the attracting insect count test of the disposable diaper after 4 hours had passed after taking it out from the package, the average number of insects settling on the crotch area after 4 hours was determined to be as follows: The disposable diaper according to aspect 1 has a lower number of settled insects than the average number of colonized insects after 4 hours.

According to the disposable diaper of aspect 2, it is possible to effectively exert the repellent effect around the wearer's legs for a long time while reducing the risk of using excessive insect repellent.

(Aspect 3)
In the unfolded state and the stretched state, the body has a longitudinal direction, a width direction, and a thickness direction that intersect with each other, and has one side girth part provided on one side in the longitudinal direction and the other side provided on the other side in the longitudinal direction. A disposable diaper comprising a side waistline portion and an absorbent core, the diaper is provided with an insect repellent, and has a square reference area with a length of 1 cm in the longitudinal direction and the width direction, and a square reference area with a length of 1 cm in the longitudinal direction and the width direction The reference region has a square comparison region having a length of 1 cm in the width direction and an end region on the other side, and the reference region overlaps the absorbent core when viewed in the thickness direction, and direction, the other side end region is located between the center position of the disposable diaper and the other end of the absorbent core, and the other side end region is located from one side end in the width direction of the other side waistline. a region extending to the other side end and having a length of 1 cm from the other end of the disposable diaper to the one side, and in which position the comparison region is located in the other end region Even if the repellent is placed in the reference area, the basis weight of the repellent in the reference area is higher than the basis weight of the repellent in the comparison area.

According to the disposable diaper of aspect 3, it is possible to effectively exhibit the repellent effect around the wearer's legs while reducing the risk of using excessive insect repellent.

(Aspect 4)
The center of the reference area is located between the center of the disposable diaper and the other end of the absorbent core in the longitudinal direction, and the center of the disposable diaper in the width direction. Aspect 3, wherein the basis weight of the repellent in the reference area is higher than the basis weight of the repellent in the comparison area, no matter where the comparison area is placed in the other end area. This is a disposable diaper described in .

According to the disposable diaper of aspect 4, it is possible to effectively exhibit the repellent effect around the wearer's legs while reducing the risk of using excessive insect repellent.

(Aspect 5)
In the unfolded state and the stretched state, the body has a longitudinal direction, a width direction, and a thickness direction that intersect with each other, and has one side girth part provided on one side in the longitudinal direction and the other side provided on the other side in the longitudinal direction. A disposable diaper comprising a side waistline portion and a crotch portion, which is provided with an insect repellent, and the crotch portion includes a non-skin side sheet portion located closest to the non-skin side, and the non-skin side sheet portion. and a skin-side sheet part adjacent to the skin side from the skin side, the non-skin-side sheet part and the skin-side sheet part are joined with an adhesive, and the crotch area has a crotch area on one side and a crotch area on the other side. The one side crotch area is a region from the one end of the crotch section to the center position of the disposable diaper in the longitudinal direction, and the other side crotch area is an area in the longitudinal direction. , a region from the other side end of the crotch area to the center position of the disposable diaper, and the maximum value of the peel strength between the non-skin side sheet part and the skin side sheet part in the entire area of the one side crotch area. Accordingly, the disposable diaper is characterized in that the maximum value of peel strength between the non-skin side sheet portion and the skin side sheet portion in the entire region of the other side crotch region is higher.

The higher the maximum value of the peel strength between the non-skin side sheet part and the skin side sheet part, the stronger the bond between the non-skin side sheet part and the skin side sheet part. Since it is difficult to create a space due to peeling between the sheets, there is a risk that the sheets will rub against each other in the space between the non-skin side sheet part and the skin side sheet part when worn, causing unevenness to be formed on the surface of each sheet. It can be reduced. According to the disposable diaper of aspect 5, the formation of unevenness on the surface due to peeling between the non-skin side sheet portion and the skin side sheet portion is reduced, and the fear that insects such as mosquitoes land in the crotch area of the other side is reduced. Therefore, the amount of insect repellent used in the disposable diaper can be reduced while exhibiting the insect repellent effect in the other side crotch region.

(Aspect 6)
The disposable diaper according to aspect 5, wherein the maximum basis weight of the repellent in the other side crotch region is higher than the maximum basis weight of the repellent in the one side crotch region.

According to the disposable diaper of aspect 6, the formation of unevenness on the surface due to peeling between the non-skin side sheet portion and the skin side sheet portion is reduced, and insects such as mosquitoes are prevented from reaching the crotch area on the one side waist portion side. This reduces the risk of the insects stopping on one side of the diaper, combined with the effect of the repellent placed on the crotch area on one side, reducing the risk of using excessive insect repellent. It can enhance the repellent effect.

(Aspect 7)
The disposable diaper according to aspect 5, wherein the maximum basis weight of the repellent in the one side crotch region is higher than the maximum basis weight of the repellent in the other side crotch region.

According to the disposable diaper of aspect 7, it is possible to reduce the formation of unevenness on the surface due to peeling between the non-skin side sheet part and the skin side sheet part, so that insects such as mosquitoes can The insect repellent placed in the crotch area on one side reduces the risk of overusing the insect repellent, and prevents insects from landing on the wearer's ventral and dorsal sides. It has a repellent effect and can reduce the risk of being bitten by insects.

(Aspect 8)
The disposable diaper according to any one of aspects 1 to 7, wherein the other side waistline portion is a backside waistline portion.

According to the disposable diaper of aspect 8, since the human body is less likely to pay attention to the back side than the ventral side, it is possible to improve the repellency effect on the wearer's back side, and to improve the repellency effect on the wearer's back side when sleeping on his stomach. It becomes possible to improve the repellent effect on the dorsal side.

(Aspect 9)
The crotch portion has a central region and a side region, the central region is a central region in the width direction when the crotch portion is divided into three equal parts in the width direction, and the side region is They are regions located on both sides of the central region, and in at least one of the one side crotch region or the other side crotch region, the non-skin side sheet portion and the skin side sheet portion in the entire area of the central region. The disposable diaper according to any one of aspects 5 to 8, wherein the maximum value of peel strength between the non-skin side sheet portion and the skin side sheet portion in the entire region of the side region is higher than the maximum value of peel strength. It is.

According to the disposable diaper of aspect 9, by reducing peeling between the non-skin side sheet portion and the skin side sheet portion in the side region, the risk of insects such as mosquitoes staying in the side region is reduced. This makes it easier to enhance the repellent effect in the area near the leg opening.

(Aspect 10)
The crotch portion has a central region and a side region, the central region is a central region in the width direction when the crotch portion is divided into three equal parts in the width direction, and the side region is They are regions located on both sides of the central region, and in at least one of the one side crotch region or the other side crotch region, the non-skin side sheet portion and the skin side sheet portion in the entire area of the central region. The disposable diaper according to any one of aspects 5 to 8, wherein a maximum value of peel strength is higher than a maximum value of peel strength between the non-skin side sheet portion and the skin side sheet portion in the entire region of the side region. .

According to the disposable diaper of aspect 10, in the crotch area, the non-skin side sheet part and the skin side sheet part are completely peeled off, and the unevenness of the non-skin side sheet part and the skin side sheet part is formed over the entire crotch area. By reducing the risk of being exposed, the risk of insects such as mosquitoes landing in the crotch area is reduced, making it easier to enhance the repellent effect of the crotch area.

(Aspect 11)
a crotch region, the crotch region has a center region and a side region, the center region is the center region in the width direction when the crotch region is divided into three equal parts in the width direction; The side regions are regions located on both sides of the central region, the crotch region includes a one side crotch region and another side crotch region, and the one side crotch region is a region located on both sides of the central region, and the one side crotch region is a region located on both sides of the central region. The other side crotch area is the area from the other side end of the crotch area to the center position of the disposable diaper in the longitudinal direction. In at least one of the one side crotch area or the other side crotch area, the maximum basis weight of the repellent in the side area is greater than the maximum basis weight of the repellent in the central area. 10. The disposable diaper according to any one of aspects 1 to 10, wherein:

According to the disposable diaper of aspect 11, the repellent effect in the region near the leg opening of the worn disposable diaper is greater than when the basis weight of the repellent in the central region is higher than the basis weight of the repellent in the side regions. It becomes easier to increase.

(Aspect 12)
a crotch region, the crotch region has a center region and a side region, the center region is the center region in the width direction when the crotch region is divided into three equal parts in the width direction; The side regions are regions located on both sides of the central region, and the maximum basis weight of the repellent in the central region is higher than the maximum basis weight of the repellent in the side regions. , the disposable diaper according to any one of aspects 1 to 10.

According to the disposable diaper of aspect 12, the repellent provided in the central region can exert its effect toward the leg openings on both sides in the width direction, thereby reducing the fear of using excessive repellent. can be done.

(Aspect 13)
The other side crotch area includes a first area and a second area, and the first area is located at the center of the longitudinal direction when the other side crotch area is divided into three equal parts in the longitudinal direction and the width direction. The second region is a region at the center in the width direction, and the second region is a region of the other side crotch region excluding the first region, and the non-skin side sheet portion and the skin in the entire first region. According to any one of aspects 5 to 7, wherein a maximum value of peel strength with the side sheet portion is greater than or equal to a maximum value of peel strength between the non-skin side sheet portion and the skin side sheet portion in the entire region of the second region. This is a disposable diaper as described.

According to the disposable diaper of aspect 13, in the other side crotch area, the non-skin side sheet part and the skin side sheet part are completely separated, and the other side crotch area is completely separated from the non-skin side sheet part and the skin side. By reducing the risk of the unevenness of the sheet portion being exposed, the risk of insects such as mosquitoes landing on the crotch area on one side of the disposable diaper is reduced, making it easier to enhance the repellent effect of the crotch area.

(Aspect 14)
a crotch area, the crotch area includes a one side crotch area and another side crotch area, and the one side crotch area is located at a central position of the disposable diaper from the one end of the crotch area in the longitudinal direction. The other side crotch area is an area from the other side end of the crotch section to the center position of the disposable diaper in the longitudinal direction, and the other side crotch area is a first area and a second region, the first region being a region at the center in the longitudinal direction and the center in the width direction when the other side crotch region is divided into three equal parts in the longitudinal direction and the width direction, respectively, The second region is a region of the other side crotch region excluding the first region, and the maximum basis weight of the repellent in the first region is the same as the basis weight of the repellent in the second region. 14. The disposable diaper according to any one of aspects 1 to 13, wherein the amount is at least the maximum value.

According to the disposable diaper of aspect 14, the repellent provided in the first region can exert its effect toward the leg openings on both sides in the width direction, so there is no possibility of using excessive repellent. It can be reduced.

(Aspect 15)
The crotch portion includes an absorbent core and a liquid-impermeable sheet provided on a non-skin side of the absorbent core, and the repellent is at least more impermeable than the liquid-impermeable sheet. 15. The disposable diaper according to any one of aspects 1 to 14, which is provided on the skin side.

According to the disposable diaper of aspect 15, it is possible to reduce the possibility that the repellent provided on the non-skin side of the liquid-impermeable sheet will penetrate into the absorbent core.

(Aspect 16)
comprising a crotch area, the crotch area is provided with the repellent, the crotch area has a mark portion indicating an area where the repellent is provided, and when viewed in the thickness direction, 16. The disposable diaper according to any one of aspects 1 to 15, having a portion where the repellent is provided and the mark portion overlap.

According to the disposable diaper of aspect 16, it becomes easier for the wearer to recognize the portion where the repellent exerts the repellent effect.

===Embodiment===
As an example of the disposable diaper according to the present embodiment, a pants-type disposable diaper for infants will be described as an example. However, the disposable diaper according to this embodiment is not limited to the above, and can also be used as a pants-type disposable diaper for adults, and a tape-type disposable diaper for infants or adults.

===Basic configuration of pants-type disposable diaper 1===
FIG. 1 is a schematic perspective view of a pants-type disposable diaper 1 (hereinafter also referred to as "diaper 1"). FIG. 2 is a view of the diaper 1 in the stored state seen from the back side. FIG. 3 is a schematic plan view of the diaper 1 in the unfolded and stretched state, viewed from the skin side. FIG. 4 is a schematic cross-sectional view taken along the center line CC in FIG. A center line CC shown in FIG. 3 and the like indicates the center (center position) of the diaper 1 in the width direction, and a center line CL indicates the center (center position) of the diaper 1 in the longitudinal direction.

The unfolded state of the diaper 1 is a state in which the pair of joints 2 provided on both sides of the pants-type diaper 1 are separated, and the diaper 1 is opened and unfolded flatly. The stretched state of the diaper 1 refers to a state in which the elastic member of the diaper 1 is stretched to such an extent that the wrinkles of the diaper 1 are no longer visible. Specifically, a state in which the dimensions of each member constituting the diaper 1 are stretched until they match or are close to the dimensions of the individual member (i.e., the dimensions in a state where the elastic member does not exhibit elasticity). show.

The pants-type diaper 1 has an up-down direction, a width direction, and a front-back direction, and the diaper 1 is formed with a waist opening BH and a pair of leg openings LH (see FIG. 2). In the front-back direction, the side that is on the ventral side of the wearer is the front side, and the side that is on the back side of the wearer is the back side. The diaper 1 has a thickness direction as shown in FIG. 4, and the side that contacts the wearer in the thickness direction is the skin side, and the opposite side is the non-skin side.

The diaper 1 has an absorbent main body 10 and waist portions 20 and 30 arranged on the non-skin side of the absorbent main body 10. The diaper 1 of the present embodiment is a so-called three-piece type, and has a waistline portion including a ventral waistline portion 20 and a backside waistline portion 30. The non-skin side of the body 10 is exposed to the outside.

As shown in FIGS. 3 and 4, the non-skin side of the ventral end in the longitudinal direction of the absorbent body 10 is joined to the skin side of the ventral waist portion 20 with an adhesive or the like. The non-skin side surface of the rear end in the longitudinal direction of the body 10 is joined to the skin side surface of the dorsal waist portion 30 with an adhesive or the like. From the diaper 1 in the unfolded state shown in FIG. The diaper 1 becomes pants-shaped by joining both sides and both sides in the width direction of the back waist portion 30 by welding (for example, thermal welding or ultrasonic welding) or the like to form a pair of joints 2. The folding portion F is provided at the center in the longitudinal direction of the diaper 1 in the unfolded state.

In the present embodiment, in the diaper 1, the area in the vertical direction where the joining part 2 is located is referred to as the "ventral waist circumference 1F" and the "dorsal waist circumference 1B", and the ventral waist circumference 1F and the dorsal waist circumference are The area below part 1B is referred to as "crotch area 1C." It should be noted that the "crotch area" is a region located under the wearer's crotch when the garment is worn. Specifically, in the case of a pants-type disposable diaper such as the diaper 1, in the pants-type state, the region below the joint 2 at both ends in the width direction is defined as the crotch 1C. In addition, in the case of tape-type disposable diapers, the disposable diaper is folded in half at the center fold in the longitudinal direction, and when the disposable diaper is divided into two equal parts in the longitudinal direction, the lowermost area is the crotch area. shall be.

The absorbent main body 10 includes a liquid-permeable top sheet 11, an absorbent core 12 that absorbs excrement, a liquid-impermeable back sheet 13, and an exterior sheet 14, each of which is bonded with an adhesive or the like. There is. An example of the absorbent core 12 is one obtained by molding liquid absorbent fibers such as pulp fibers containing a superabsorbent polymer into a predetermined shape. The absorbent core 12 may be covered with a core wrap sheet such as liquid-permeable tissue paper or nonwoven fabric. Other examples of the absorbent core 12 include a SAP sheet, which is a hydrophilic sheet with an SAP layer attached to it, and an air-laid sheet, which is a sheet made of liquid-absorbent fibers formed by an air-laid method.

Further, the absorbent main body 10 has leg-surrounding elastic members 15 (for example, rubber thread) that expand and contract in the longitudinal direction (vertical direction) on both sides in the width direction. Thereby, the diaper 1 fits around the wearer's legs.

Further, the absorbent main body 10 has leakage prevention wall portions 16 that can stand up on the skin side at both sides in the width direction. For example, the exterior sheet 14 is folded back inward in the width direction so that both sides in the width direction are located on the skin side surfaces of the top sheet 11, and the leak-proof wall elastic member 161 stretches and contracts in the longitudinal direction at the folded part. (For example, rubber thread) is provided to form the leakage prevention wall portion 16.

As shown in FIG. 4, the ventral waist section 20 and the dorsal waist section 30 include skin-side sheets 21 and 31 and non-skin-side sheets 22 and 32 respectively made of flexible nonwoven fabric, and a plurality of sheets that expand and contract in the width direction. It has waist elastic members 23, 33 (for example, rubber thread). The plurality of waist elastic members 23 and 33 are vertically spaced apart from each other in the waist portions 20 and 30, and are fixed to the seat while being stretched in the width direction. Therefore, the ventral waist portion 20 and the back waist portion 30 are expandable and contractible in the width direction, and fit around the wearer's waist.

The ventral waist portion 20 may include a printed sheet 24 (for example, a resin film made of polyethylene or polypropylene) between the skin side sheet 21 and the non-skin side sheet 22. Although not shown, the back waist section 30 may also include a printed sheet between the skin side sheet 31 and the non-skin side sheet 32.

Further, as shown in FIG. 3, the ventral waist portion 20 has a rectangular shape. On the other hand, the dorsal waist portion 30 has an extending portion 34 extending downward from the rectangular joint portion 2. The extending portion 34 has a substantially trapezoidal shape with the length in the width direction becoming shorter toward the bottom.

Although the basic configuration of the diaper 1 has been described above, the configuration of the diaper 1 is not limited to the above. For example, the diaper 1 may be a two-piece type diaper, in which the ventral waist portion 20 and the dorsal waist portion 30 are formed of one continuous member, or the ventral waist portion 20 and the dorsal waist portion 30 may be formed of one continuous member. A girth section of the crotch area may be provided to connect the crotch area. Further, the waist elastic members 23, 33 and the leg elastic members 15 may be sheet-like elastic members (stretch film or stretch nonwoven fabric) instead of rubber thread.

<<Insect repellent AM>>
The diaper 1 is provided with an insect repellent AM. Insect repellent AM (hereinafter also referred to as "repellent AM") is a repellent (insect repellent) against pests such as mosquitoes, silkworms, midges, and flies, and contains ingredients that have an insect repellent effect. synthetic compounds and natural plant extracts. For example, lemongrass, citronellal, 1,8-cineole, linalyl acetate, DEET (N,N-diethyl-3-methylbenzamide), sesquiterpene, ethyl butylacetylaminopropionate, picaridin, pyrethroid, cinnamon, rosemary, Lavender, peppermint, eucalyptus, citronella, lemon eucalyptus, pickle, etc. can be used. The repellent AM can be selected depending on the target pest and the wearer. In this embodiment, an isolated fragrance extracted from citronella grass was employed. As a result, an ingredient (citronella grass) having an insect repellent effect is imparted to the diaper 1. In addition, a repellent AM may be used, for example, using an isolated fragrance extracted from a repellent component such as lemongrass.

Note that the repellent AM is preferably an allergen-free substance. For example, under the EU (European Union) Cosmetics Directive (76/768/EEC), 26 substances that are required to be labeled as allergens are substantially free of them (the ratio in repellent AM is 1% or less) is preferable. Moreover, it is preferable that the repellent AM does not inhibit the adhesive performance of the hot melt adhesive used in the diaper 1.

The repellent AM in FIG. 2 and the like is also the repellent placement area AM indicating the area where the repellent AM is applied. The insect repellent AM of this embodiment is a volatile substance and is applied in liquid form. The repellent placement area AM may be coated with only a synthetic compound or a natural plant extract containing an ingredient that has an insect repellent effect, or a solvent or the like may be added to the ingredient (substance) that has an insect repellent effect as appropriate. A liquid may be applied.

In addition, in this embodiment, although the liquid repellent AM was applied to the diaper 1, it is not limited to this. The insect repellent AM may be in solid form, or may be in a form in which the repellent is encapsulated in microcapsules or the like.

As shown in FIG. 2 and the like, in this embodiment, the insect repellent AM is provided on the back side of the diaper 1, and specifically, on the back side of the diaper 1, the insect repellent AM is provided on the back side of the diaper 1, below the back waist portion 30. (on the folded part F side), the repellent AM is provided above the folded part F (center line CL) and approximately at the center in the width direction. This makes it easier to exert a repellent effect on the wearer's legs, thereby reducing the risk of mosquito bites on the wearer's legs.

Regarding the diaper 1 in the unfolded and stretched state, it is preferable that the repellent AM is provided at a position overlapping with the absorbent core 12 when viewed in the thickness direction. Specifically, the area of the diaper 1 where the repellent AM is provided is a rectangular area with a length in the longitudinal direction (vertical direction) of 30 mm and a length in the width direction of 60 mm. The size and shape of the area where the repellent AM is provided can be changed arbitrarily. For example, it may be a rectangular region with a length in the longitudinal direction of 40 mm and a length in the width direction of 80 mm, or may have any other shape such as a circle, an ellipse, or a polygon.
As a result, even if the repellent AM evaporates, the substance constituting the absorbent core absorbs the repellent AM, so that the diaper 1 can maintain the repellent AM for a long time. In particular, when the absorbent core 12 includes liquid-absorbing fibers such as pulp fibers and superabsorbent polymer (SAP), the substance with a porous surface easily absorbs the volatilized repellent AM.

<About the repellent effect of diaper 1>>
BACKGROUND ART Absorbent articles such as disposable diapers containing insect repellents have been known. The more insect repellents are provided in a disposable diaper, the more the repellent effect can be improved, but the more insect repellents are provided, the higher the manufacturing cost will be. Furthermore, while wearing the diaper 1, it is known that the lower body of the wearer, such as the legs (particularly the thighs and shins), is more likely to be bitten by insects than the upper body, such as the face (ventral side). While wearing the diaper 1, the upper body is easy for the wearer to recognize and reach, but the lower body is difficult for the wearer to recognize and reach. Therefore, the diaper 1 is required to have an effect of repelling insects around the legs.

The diaper 1 of this embodiment includes an insect repellent AM. Then, within 20 minutes after taking it out of the package, the diaper 1 was tested for the number of insects it attracted, and the results showed that the average number of colonized insects in the crotch area 1C, the average number of colonized insects in the ventral waist area 1F and the dorsal waist area 1B. less than the number. The "attracted insect count test" is a test for measuring the number of insects attracted to the diaper 1. The result of this attracting insect number test is that the average number of insects colonizing the crotch region 1C is smaller than the average number of colonizing insects of the ventral waist region 1F and the dorsal waist region 1B. Compared to the case where the number of insects is equal to or higher than the average number of insects settled in the ventral waist region 1F and the dorsal waist region 1B, the insect repellent AM can be effectively used on the wearer's legs while reducing the risk of excessive use. It can have a repellent effect on those around you. Note that the package is a container in which the diaper 1 is housed in a housing member, and the diaper 1 is generally distributed or stored in a packaged state in which the diaper 1 is housed in the housing member. The diaper 1 taken out from the package within 20 minutes refers to the time when the diaper 1 was taken out from the unopened package within 20 minutes.

The number of attracted insects is measured using the following method. FIG. 5 is a diagram illustrating the attracting insect count test. FIG. 5 is a schematic diagram of the test method, and insects are omitted.
First, a sample is prepared in which a diaper is worn over the stockings on model D wearing stockings.
Samples are prepared: Sample 1, in which model D wears diaper 1 containing repellent AM within 20 minutes after being taken out of the package, and Sample 2, in which model D wears a diaper without repellent AM. Sample 2 has the same configuration as Sample 1 except that it does not include repellent AM. A disposable body warmer was placed on the ventral side (or dorsal side) of each sample. By inserting a disposable warmer, the temperature of the sample is close to body temperature, making it more attractive to insects.
Model D is a balloon shaped like an infant's body shape (torso and leg circumference). Model D's torso circumference is 47 cm, and the leg circumference is 25 cm. The material of the balloon in model D is polyethylene. The stockings worn by Model D are made of nylon and polyurethane.
In each sample worn on model D, the waist portions 20 and 30 are stretched by 180%, and the leg openings LH are stretched by 250%.
Then, as shown in FIG. 5, the samples are placed one by one in a cubic box B measuring 50 cm x 50 cm x 50 cm, and the samples are hung from the top of the box B with a string LO or the like. Box B may be, for example, a box made of nylon that has good air permeability and visibility, and is covered with cloth. Box B contains 50 insects. The insect is an adult female Aedes aegypti mosquito. The temperature in box B is 25° C. and the humidity is 50-70%.
Then, depending on the elapsed time since the sample was placed in the box B, the number of insects attached to each of the waist portions 1F and 1B and the crotch portion 1C of the sample is measured. Specifically, the number of insects attached to the measurement area of the sample is measured 5 minutes, 10 minutes, 20 minutes, 30 minutes, 60 minutes, and 120 minutes after placing the sample in box B. An average value is calculated from the number of insects attached to each of the waist portions 1F and 1B and the crotch portion 1C over the elapsed time.

The attracting insect count test may be performed using a model using a plurality of cylinders instead of a balloon shaped to imitate the body shape of an infant. For example, a test for the number of attracted insects may be conducted using two cylindrical tubes, or a test for the number of attracted insects may be conducted using three cylindrical tubes. When conducting an attracting insect count test using two cylindrical tubes, insert a urethane tube from the waist opening BH of the diaper 1 toward each leg opening LH, and place the tubes on the ground. Place the sample standing perpendicular to the box B in the same box B as above, measure the number of insects attached to the measurement area of the sample at each elapsed time, and measure the waist circumference 1F at each elapsed time. An average value may be calculated from the number of insects attached to each of the crotch area 1B and the crotch area 1C. When conducting an attracting insect count test using three cylindrical tubes, insert a urethane tube from the waist opening BH of the diaper 1 toward each leg opening LH, and place the tubes on the ground. Place the sample in the same box B as described above, with a cylinder that is perpendicular to the body and inserted into the trunk opening BH, and which has a larger diameter than the cylinder inserted into the leg opening LH. The number of insects attached to the measurement area of the sample may be measured at each elapsed time, and an average value may be calculated from the number of insects attached to each of the waist portions 1F and 1B and the crotch portion 1C during the elapsed time. .

FIG. 6A is a diagram showing the results of a test for the number of insects attracted to the diaper 1 within 20 minutes after being taken out of the package. For each measurement area shown in FIGS. 6A and 6B (described later), the results of the average number of attracted insects at each elapsed time are the average values of the results of six (n) measurements. In FIGS. 6A and 6B, the "total waist circumference" refers to the sum of the results for the ventral waist 1F and the dorsal waist 1B, and the "total crotch" refers to the ventral crotch ( It shows the total of the results for the ventral crotch area 1Ca) and the results for the dorsal crotch area (dorsal crotch area 1Cb). Then, by calculating the average value of the average number of attracted insects at each elapsed time, the average number of settled insects is obtained. For example, in the waist region (ventral waist region and dorsal waist region) of diaper 1, the sum of the average number of insects attracted at each elapsed time is (sum of the average number of insects attracted at each elapsed time of the waist region = 7.5)/6=1.25, and the average number of settled insects is 1.3.

As shown in FIG. 6A, the total average number of colonized insects in the waist area 1F and 1B of diaper 1 (sample 1) equipped with repellent AM is 1.3, and the total average number of colonized insects in the crotch area 1C is 1.3. is 0.3, so it is clear that the average number of insects colonizing the crotch region 1C is smaller than the average number of insects colonizing the ventral waist region 1F and the dorsal waist region 1B. On the other hand, for sample 2 of the diaper 1 without the repellent AM, the total average number of colonized insects in the waist portions 1F and 1B is 2.2, and the total average number of colonized insects in the crotch region 1C is 0. It is 8. In this way, by making the average number of insects settled in the crotch region 1C of the diaper 1 including the repellent AM smaller than the average number of insects colonized in the ventral waist region 1F and the dorsal waist region 1B, the diaper 1 can be easily worn while being worn. While exhibiting a repellent effect around the legs of the person, it is possible to reduce the possibility that the amount of repellent AM provided in the diaper 1 becomes excessively large.

In addition, as for the diaper 1 provided with the repellent AM, as a means for making the average number of colonized insects in the crotch region 1C smaller than the average number of colonized insects in the ventral waist region 1F and the dorsal waist region 1B, the repellent in the diaper 1 is used. The ingredients, amount, and arrangement of the agent AM, the application of the repellent AM in liquid form, the application of the agent encapsulated in microcapsules, and other aspects, such as increasing the peel strength between each member of the diaper 1, Examples of methods include creating unevenness on the surface to make it difficult for insects to stop. For example, when the repellent AM is provided over the entire area of the diaper 1, even if the concentration of the repellent AM in the crotch area 1C is higher than the concentration of the repellent AM in the ventral waist region 1F and the dorsal waist region 1B. good. Even if the repellent AM is provided over the entire area of the diaper 1, the basis weight of the crotch section 1C is higher than the basis weight of the repellent AM in the ventral waist region 1F and the dorsal waist region 1B. good. Furthermore, even if the ventral waist portion 1F and the dorsal waist portion 1B have a larger area covered with the repellent AM than the crotch region 1C, the ventral waist portion 1F and the dorsal waist portion 1B may be repellent. The concentration in the crotch area 1C may be higher than the concentration of agent AM. Even if the area covered with the repellent AM is larger in the ventral waist portion 1F and the dorsal waist portion 1B than in the crotch region 1C, the repellent AM in the ventral waist portion 1F and the dorsal waist portion 1B is The basis weight of the crotch portion 1C may be higher than the basis weight of . Furthermore, when the concentration or basis weight of the repellent AM is provided uniformly over the entire area of the diaper 1, the peel strength between the exterior sheet 14 and the back sheet 13 in the crotch region 1C may be increased. Note that the relationship between peel strength and repellent effect will be described later.

In addition, when the above-mentioned attracting insect count test was conducted on the diaper 1 after 4 hours had passed after taking it out from the package, the average number of insects settled in the crotch area 1C after 4 hours was the same as that of the ventral waist area 1F and It is preferable that the number is smaller than the average number of settled insects after 4 hours in the dorsal girth region 1B. The diaper 1 after 4 hours has passed since being taken out of the package is the diaper 1 after 4 hours have passed since the unopened package was opened, the diaper 1 was taken out, and the diaper 1 was exposed to the outside.

To determine the average number of settled insects after 4 hours, the diaper 1 is removed from the package, placed on a flat table for 4 hours, and then subjected to the same insect attraction test as described above. Sample 3 is a sample in which Diaper 1 equipped with repellent AM was worn on model D after 4 hours had passed after being taken out of the package, and Sample 4 is the same as Sample 3 except that it is not equipped with repellent AM. It is the composition. Similarly to the above, each model D is made to wear stockings in advance, and a disposable body warmer is placed on the ventral side (or dorsal side) of each sample.

FIG. 6B is a diagram showing the results of a test for the number of insects attracted to the diaper 1 after 4 hours had passed since it was taken out of the package. The "average number of colonized insects" in FIG. 6B is the "average number of colonized insects after 4 hours". As shown in FIG. 6B, the total average number of colonized insects in the waist area 1F and 1B of diaper 1 (sample 3) after 4 hours (average number of colonized insects after 4 hours) is 0.5, The total average number of colonized insects in the crotch 1C after 4 hours has passed (average number of colonized insects after 4 hours) is 0.2, so the average number of colonized insects in the crotch 1C after 4 hours has passed is 0.2. It is clear that the number of colonized insects is smaller than the average number of colonized insects in the ventral waist region 1F and the dorsal waist region 1B after 4 hours. On the other hand, for sample 4 of diaper 1 that does not include the repellent AM, the total average number of colonized insects in the waist area 1F and 1B (average number of colonized insects after 4 hours) is 2.2, and the total average number of colonized insects in the waist area 1F and 1B is 2.2. The total average number of colonized insects (average number of colonized insects after 4 hours) was 3.3. In this way, for the diaper 1 equipped with the repellent AM after 4 hours, the average number of colonized insects in the crotch area 1C after 4 hours is the same as that in the ventral waist area 1F and the dorsal waist area 1B By having a smaller number than the average number of settled insects, it is possible to maintain the repellent effect around the wearer's legs for a long time, while reducing the possibility that the amount of repellent AM provided in the diaper 1 will become excessively large.

In addition, for the diaper 1 provided with the repellent AM after 4 hours, the average number of insects settled in the crotch area 1C after 4 hours is the average number of insects settled in the ventral waist area 1F and the dorsal waist area 1B after 4 hours. Measures to reduce the number of insects below the number of insects include changing the ingredients, amount, and arrangement of the repellent AM in the diaper 1, and applying the repellent AM in liquid form or in a state in which it is encapsulated in microcapsules. can be exemplified.

Further, as shown in FIG. 7, the diaper 1 in the unfolded and stretched state has a square reference area aa with a length of 1 cm in the longitudinal direction and the width direction, and a square reference area aa with a length of 1 cm in the longitudinal direction and the width direction. It has a comparison area ba and a dorsal end area Hb. FIG. 7 is a diagram illustrating the reference area aa and the comparison area ab. FIG. 7 is a schematic diagram seen from the non-skin side, and for convenience, members such as the elastic members 23 and 33 are omitted from the illustration. Note that the ventral side in the longitudinal direction is also referred to as one side, and the dorsal side is also referred to as the other side.

The reference region aa overlaps the absorbent core 12 when viewed in the thickness direction, and is located between the center position CL of the diaper 1 and the back end 12bc of the absorbent core in the longitudinal direction.

The back end region Hb is a region from one side to the other in the width direction of the back waistline portion 30, and has a length of 1 cm on one side from the back end 30e in the longitudinal direction of the diaper 1. It is an area. Note that the regions from one side to the other in the width direction of the back waist portion 30 are regions between the inner ends of the joint portion 2 in the width direction. Further, a length of 1 cm from the back end 30e of the diaper 1 on one side in the longitudinal direction is the length of the back end region Hb in the longitudinal direction.

Regarding such a diaper 1, no matter where the comparison area ba is placed in the back end area Hb, the basis weight of the repellent AM in the reference area aa is higher than the basis weight of the repellent AM in the comparison area ba. . As shown in FIG. 7, for example, in the dorsal end region Hb, even if the comparison region ba is arranged at the position of the region ba1, the basis weight of the repellent AM in the reference region aa is higher than the basis weight of the region ba1. . Even if the comparison area ba is arranged at the position of the area ba2, the basis weight of the repellent AM in the reference area aa is higher than the basis weight of the area ba2. Even if the comparison area ba is arranged at the position of the area ba3, the basis weight of the repellent AM in the reference area aa is higher than the basis weight of the area ba3. Note that the length of each of the regions ba1, ba2, and ba3 in the longitudinal direction (the length in the longitudinal direction of the dorsal end region Hb) is 1 cm, and the length in the width direction is 1 cm. In this way, no matter where the comparison area ba is placed in the dorsal end area Hb, the basis weight of the repellent AM in the reference area aa is higher than the basis weight of the repellent AM in the comparison area ba.

In the diaper 1 of the present invention, no matter where the comparison area ba is placed in the back end area Hb, the basis weight of the repellent AM in the reference area aa is higher than the basis weight of the repellent AM in the comparison area ba. By doing so, the amount of repellent AM used in the diaper 1 can be made smaller than when the basis weight of the repellent AM in the back end region Hb is set to be equal to or greater than the basis weight of the reference region aa. In other words, the risk of using excessive insect repellent can be reduced compared to when the insect repellent AM is uniformly provided over the entire area of the diaper 1. In addition, the basis weight of the repellent AM in the reference area aa of the wearer is higher than the basis weight of the repellent AM in the comparison area ba, making it easier to exert the repellent effect around the wearer's legs (lower body), Makes it easier to prevent insect bites. In particular, when the wearer is an infant, it is assumed that the wearer wears a shirt or the like on the upper body, but only the diaper 1 on the lower body. Even in such a case, the insect repellent effect can be effectively exhibited around the wearer's legs while reducing the risk of excessive use of the insect repellent AM.

Moreover, like the diaper 1, no matter where the insect repellent AM is provided on the back side of the diaper 1 and the comparison area ba is placed in the back end area Hb, the area of the insect repellent AM in the reference area aa is The amount is preferably higher than the basis weight of the repellent AM in the comparison area ba. In general, it is difficult to pay attention to the dorsal side of the human body than to the ventral side. It is possible to improve the repellency effect on the back side of the wearer, for example, to improve the repellency effect on the back side of the diaper 1 when sleeping on the stomach.

The center ac of the reference area aa is located at the center cb12 between the center position CL of the diaper 1 and the position of the back end 12bc of the absorbent core 12 in the longitudinal direction, and at the center position C of the diaper 1 in the width direction. - C, and no matter where the comparison area ba is placed in the dorsal end area Hb, the basis weight of the repellent AM in the reference area aa is higher than the basis weight of the repellent AM in the comparison area ba. Good too. Even in such a case, no matter where the comparison area ba is placed in the dorsal end area Hb, the basis weight of the repellent AM in the reference area aa is higher than the basis weight of the repellent AM in the comparison area ba. Then, while reducing the amount of repellent AM used in the diaper 1 than when the basis weight of the repellent AM in the dorsal end region Hb is set to be equal to or greater than the basis weight of the reference region aa, The insect repellent effect can be effectively exhibited.

Comparison of the basis weight (g/m ² ) of the repellent AM in the reference area aa and the basis weight (g/m ² ) of the repellent AM in the comparison area ba (e.g. ba1, ba2, ba3) is performed using gas chromatography. This can be carried out using a device (7890B manufactured by Agilent or an equivalent device).

(1) First, a reference area aa to be measured and a plurality of comparison areas ba (for example, ba1, ba2, ba3) are cut out from the back waist portion 30 and the absorbent main body 10 of the diaper 1. The reference area aa and the comparison area ba that have been cut out are each a square sample of length x width direction = 10 mm x 10 mm.
(2) Next, a mixture of repellent AM (component with insect repellent effect) and other components (solvent, etc.) is extracted from the sample by immersing the sample in water or the like.
(3) Component analysis of the mixture extracted for each sample using a gas chromatography device. Then, for each sample, obtain the peak value of the repellent AM (component with insect repellent effect) and the peak value of other components (solvent, etc.), and calculate the peak value of the repellent relative to the peak value of the other components. Calculate the ratio (peak value of repellent/peak value of other components). The ratio corresponds to the amount of repellent AM provided in the sample.
(4) Finally, calculate the proportion of repellent in each sample (peak value of repellent/peak value of other components ≒ amount of repellent AM), and calculate the proportion of repellent AM in the reference area aa and comparison area ba. It shall correspond to the basis weight of Then, the basis weights of the repellent AM obtained by calculation are compared.

In addition, for each sample cut out, the members in each sample (for example, the skin side sheet 31, non-skin side sheet 32, etc. in the dorsal girth part 30) are separated, and each repellent AM in each member is separated. By measuring and integrating the amounts, the basis weights of the repellent AM in the reference area aa and the comparison area ba may be calculated and compared.

As described above, regarding the diaper 1 provided with the repellent AM, the outer sheet (non-skin side sheet) 14 located closest to the non-skin side and the back sheet (non-skin side sheet) adjacent to the outer sheet 14 from the skin side ( (skin side sheet) 13 (see FIG. 4). The exterior sheet 14 and the back sheet 13 are bonded together with an adhesive such as a hot melt adhesive.

Furthermore, as shown in FIG. 8, the crotch area 1C of the diaper 1 includes a ventral crotch area (one side crotch area) 1Ca and a back side crotch area (the other side crotch area) 1Cb. FIG. 8 is a diagram illustrating each area in the diaper 1. FIG. 8 is a schematic view as seen from the non-skin side, and in FIG. 8, members such as the elastic members 23 and 33 are omitted for convenience. Note that the ventral side in the longitudinal direction is also referred to as one side, and the dorsal side is also referred to as the other side. The ventral crotch region 1Ca is a region from the ventral end of the crotch 1C to the center position CL of the diaper 1 in the longitudinal direction. The back crotch region 1Cb is a region from the back end of the crotch 1C to the center position CL of the diaper 1 in the longitudinal direction.

The maximum value of the peel strength between the exterior sheet 14 and the back sheet 13 in the entire region of the dorsal crotch region 1Cb is greater than the maximum value of the peel strength between the exterior sheet 14 and the back sheet 13 in the entire region of the ventral crotch region 1Ca. is high. To put it simply, the dorsal crotch region 1Cb has a portion where the exterior sheet 14 and the back sheet 13 are more firmly joined than the ventral crotch region 1Ca.

Insects such as mosquitoes are generally more likely to land on uneven surfaces than on smooth surfaces. When the bond between the exterior sheet 14 and the back sheet 13 is peeled off, a space is created between the exterior sheet 14 and the back sheet 13 due to the peeling. If the diaper 1 is put into the wearing state while having this space, the sheets 14 and 13 will rub against each other in the space between the outer sheet 14 and the back sheet 13, and the skin side of the outer sheet 14 or the non-skin side of the back sheet 13 will rub against each other in the space between the outer sheet 14 and the back sheet 13. The fibers tend to become fluffy, and there is a risk that unevenness will be formed on the bonded surface, and the surface with the unevenness will be exposed. On the other hand, the higher the maximum value of the peel strength between the exterior sheet 14 and the back sheet 13, the stronger the bond between the exterior sheet 14 and the back sheet 13, and the more the peel strength between the exterior sheet 14 and the back sheet 13 increases. This reduces the possibility that the sheets 14 and 13 will rub against each other in the space between the outer sheet 14 and the back sheet 13 and unevenness will be formed on the surface of each sheet 14 and 13 when worn. be able to. By reducing the risk of separation between the exterior sheet 14 and the back sheet 13, unevenness is less likely to be formed on the skin side of the exterior sheet 14 or the non-skin side of the back sheet 13, and insects such as mosquitoes can Since the fear of stopping at 1C can be reduced, the amount of insect repellent used in the diaper 1 can be reduced, since the insect repellent effect in the dorsal inseam region 1Cb is exhibited.

For example, the dorsal side (dorsal crotch area 1Cb) exhibits a repellent effect due to the peel strength between the exterior sheet 14 and the backsheet 13, and the ventral side (ventral waist 20, ventral crotch area 1Ca) exhibits a repellent effect. By providing the AM, it is possible to exert the insect repellent effect of the diaper 1 on the wearer's ventral and dorsal sides, and to reduce the risk of excessive use of the repellent AM. Since it is difficult for people to pay attention to the dorsal side of the body than to the ventral side, improving the repellent effect of the wearer's dorsal side makes it easier to effectively prevent insect bites. Furthermore, if the wearer is an infant who often sleeps on his or her stomach, it is necessary to protect the wearer's back from insects. On the back side (back side crotch area 1Cb), the repellent effect is exerted by the peel strength between the exterior sheet 14 and the back sheet 13, and on the back side of the diaper 1 (back side waistline 30, back side crotch area 1Cb). By providing the repellent AM, it becomes easier to effectively repel insects from the back side of the wearer.

Furthermore, in this embodiment, the maximum value of the peel strength between the exterior sheet 14 and the back sheet 13 in the entire region of the dorsal inseam region 1Cb is defined as the maximum value of the peel strength between the exterior sheet 14 and the back sheet 13 in the entire region of the ventral inseam region 1Ca. However, the maximum value of the peel strength between the exterior sheet 14 and the back sheet 13 in the entire ventral inseam region 1Ca was set to be higher than the maximum value of the peel strength between the exterior sheet 14 and the back sheet 13 in the entire region of the dorsal inseam region 1Cb. The intensity may be higher than the maximum value.

In this case, it is possible to reduce the possibility that the exterior sheet 14 and the back sheet 13 in the ventral crotch area 1Ca will separate, and to prevent unevenness from being formed on the skin side of the exterior sheet 14 or the non-skin side of the back sheet 13. This can reduce the risk of insects such as mosquitoes landing on the ventral crotch area 1C. Since the insect repellent effect is exhibited in the ventral inseam region 1Ca, the amount of insect repellent used in the diaper 1 can be reduced.

For example, the ventral side (ventral crotch area 1Ca) exhibits a repellent effect due to the peel strength between the exterior sheet 14 and the backsheet 13, and the dorsal side (dorsal waistline 30, dorsal crotch area 1Cb) exhibits a repellent effect. By providing the AM, it is possible to exert the insect repellent effect of the diaper 1 on the wearer's ventral and dorsal sides, and to reduce the risk of excessive use of the repellent AM. In addition, in the case of infants who often sleep on their backs, it is necessary to avoid insects on the wearer's abdomen. The ventral side (ventral inseam area 1Ca) exhibits a repellent effect due to the peel strength between the exterior sheet 14 and the back sheet 13, and the ventral side (abdominal torso 20, ventral inseam area 1Ca) exhibits a repellent effect. By providing the agent AM, it becomes easier to effectively repel insects on the wearer's ventral side.

"Peel strength" is the magnitude of the force that separates the bond, and is also the bond strength. The peel strength of each bond can be measured by a known method. For example, first, the ventral crotch region 1Ca and the dorsal crotch region 1Cb are cut out from the diaper 1, respectively. Next, the exterior sheet 14 and the back sheet 13, which are joined together, are taken out from the cut out ventral crotch region 1Ca and the dorsal crotch region 1Cb, respectively, and are used as samples. Then, for each sample taken out, tape is pasted on both sides of the widthwise end or longitudinal end (the surface of the exterior sheet 14 and the surface of the backsheet 13) to create a pair of gripping parts. . The pair of gripping parts are each held between the chucks of the tensile testing machine. Then, adjust the load of the tensile tester to zero, pull the gripping part on the exterior sheet 14 side in one direction (non-skin side), and pull the gripping part on the backsheet 13 side in the other direction (skin side). ) to peel off the exterior sheet 14 and back sheet 13 in the sample, and measure the force for peeling them off. The distance between the chucks is 10 mm, the pulling speed is 100 mm/min, and the maximum load is read. This measurement is performed multiple times (N=10) and the average value of the maximum load is calculated. It is preferable to compare the value obtained by converting the calculated maximum load into a load per unit width (N/25 mm) as the magnitude of the peeling force (peel strength). Note that it is preferable to perform the measurement under a constant environment (for example, a temperature of 20° C. (±2° C.) and a humidity of 60% (±5%)) in a state where the temperature of the sample is stable. The sample to be measured using the tensile tester may be the entire ventral crotch region 1Ca and the dorsal crotch region 1Cb, or the entire ventral crotch region 1Ca and the dorsal crotch region 1Cb. The entire area may be cut into sample pieces of 25 mm x 25 mm, respectively, and the magnitude of the peeling force of all the obtained sample pieces may be measured.

The maximum value of the peel strength between the exterior sheet 14 and the backsheet 13 in the entire region of the dorsal crotch region 1Cb is higher than the maximum value of the peel strength between the exterior sheet 14 and the backsheet 13 in the entire region of the ventral crotch region 1Ca. In this case, it is preferable that the maximum basis weight of the repellent AM in the dorsal inseam region 1Cb is higher than the maximum basis weight of the repellent AM in the ventral inseam region 1Ca. As a result, the formation of unevenness on the back side of the diaper 1 (dorsal crotch area 1Cb) due to peeling between the exterior sheet 14 and the back sheet 13 can be reduced, so mosquitoes can This reduces the risk of insects getting stuck in the side crotch area 1C, and together with the effect of the repellent AM provided in the back crotch area 1Cb of the diaper 1, reduces the risk of using excessive insect repellent. The repellent effect of the back side portion of the diaper 1 (the back crotch area 1Cb) can be enhanced. In particular, in the case of sleeping on the stomach, the diaper 1 can effectively exhibit the repellent effect while reducing the amount of repellent AM used by increasing the repellent effect on the back side of the wearer. I can do it.

Note that the maximum value of the peel strength between the exterior sheet 14 and the back sheet 13 in the entire ventral crotch region 1Ca is higher than the maximum value of the peel strength between the exterior sheet 14 and the back sheet 13 in the entire region of the ventral crotch region 1Ca. is high, it is preferable that the maximum basis weight of the repellent AM in the ventral inseam region 1Ca is higher than the maximum basis weight of the repellent AM in the dorsal inseam region 1Cb. This prevents unevenness from being formed on the ventral side (ventral crotch area 1Ca) of the diaper 1 due to peeling between the exterior sheet 14 and the back sheet 13, and prevents mosquitoes from reaching the ventral crotch area 1C of the diaper 1. Together with the effect of the repellent AM provided in the ventral crotch area 1Ca of the diaper 1, this reduces the risk of using excessive insect repellent, and The repellent effect of the ventral crotch region 1Ca can be enhanced. In particular, in the case of sleeping on the back, the diaper 1 can effectively exhibit the repellent effect while reducing the amount of repellent AM used by increasing the repellent effect on the ventral side of the wearer. I can do it.

On the other hand, the maximum value of the peel strength between the exterior sheet 14 and the back sheet 13 in the entire dorsal inseam region 1Cb is greater than the maximum value of the peel strength between the exterior sheet 14 and the back sheet 13 in the entire region of the ventral inseam region 1Ca. is high, the maximum basis weight of the repellent AM in the ventral inseam region 1Ca may be higher than the maximum basis weight of the repellent AM in the dorsal inseam region 1Cb. As a result, the formation of unevenness on the back side of the diaper 1 (dorsal crotch area 1Cb) due to peeling between the exterior sheet 14 and the back sheet 13 can be reduced, so mosquitoes can The insect repellent AM provided in the ventral crotch area 1Ca reduces the risk of the insect getting stuck in the side crotch area 1C, and the insect repellent AM is provided in the ventral crotch area 1Ca, reducing the risk of overusing the insect repellent AM. Both sides of the back can exert an insect repellent effect and reduce the risk of being bitten by insects.

Note that the maximum value of the peel strength between the exterior sheet 14 and the back sheet 13 in the entire ventral crotch region 1Ca is higher than the maximum value of the peel strength between the exterior sheet 14 and the back sheet 13 in the entire region of the ventral crotch region 1Ca. is high, the maximum basis weight of the repellent AM in the dorsal inseam region 1Cb may be higher than the maximum basis weight of the repellent AM in the ventral inseam region 1Ca. As a result, the ventral side (ventral crotch area 1Ca) of the diaper 1 can reduce the formation of unevenness on the surface due to peeling between the exterior sheet 14 and the backsheet 13, so mosquitoes can The insect repellent AM provided in the dorsal crotch area 1Cb reduces the risk of insects getting stuck in the side crotch area 1C, and the insect repellent AM is provided in the dorsal crotch area 1Cb. Both sides of the back can exert an insect repellent effect and reduce the risk of being bitten by insects.

The maximum basis weight of the repellent AM in each region can be determined by the same method as the above-mentioned basis weight measurement. For example, in the same way as the basis weight measurement method described above, square samples of longitudinal direction x width direction = 10 mm x 10 mm are cut out for all regions of the ventral inseam region 1Ca and the dorsal inseam region 1Cb, and all The maximum value of basis weight in each region may be obtained from the sample basis weight results.

As shown in FIG. 8, the crotch portion 1C has a central region Cc and side regions Ce. The central region Cc is the central region in the width direction when the crotch portion 1C is divided into three equal parts in the width direction. The side regions Ce are regions located on both sides of the central region. The central region Cc in the ventral crotch region 1Ca is the ventral central region Cac, and the side region Ce in the ventral crotch region 1Ca is the ventral side region Cae. The central region Cc in the dorsal crotch region 1Cb is the dorsal central region Cbc, and the side region Ce in the dorsal crotch region 1Cb is the dorsal side region Cbe.

The maximum value of the peel strength between the exterior sheet 14 and the back sheet 13 in the entire region of the back side region Cbe is higher than the maximum value of the peel strength between the exterior sheet 14 and the back sheet 13 in the entire region of the back side central region Cbc. Preferably high. By reducing the risk of separation between the exterior sheet 14 and the backsheet 13 in the dorsal side region Cbe, it is possible to reduce the risk of insects such as mosquitoes staying in the dorsal side region Cbe. It becomes easier to enhance the insect repellent effect in the area near the leg opening LH.

In addition, similarly to the dorsal crotch region 1Cb, the maximum value of the peel strength between the exterior sheet 14 and the back sheet 13 in the entire region of the ventral side region Cae is calculated as the maximum peel strength between the exterior sheet 14 and the back sheet in the entire region of the ventral central region Cac The peel strength may be higher than the maximum peel strength with No. 13. This can reduce the risk of insects such as mosquitoes staying in the ventral side region Cae, making it easier to enhance the insect repellent effect in the region near the leg opening LH of the diaper 1. Further, both the ventral crotch region 1Ca and the dorsal crotch region 1Cb may have such peel strength.

On the other hand, the maximum value of the peel strength between the exterior sheet 14 and the back sheet 13 in the entire area of the back side central area Cbc is greater than the maximum value of the peel strength between the exterior sheet 14 and the back sheet 13 in the entire area of the back side area Cbe. It can be expensive. As a result, the exterior sheet 14 and the backsheet 13 are completely separated in the dorsal crotch region 1Cb, and unevenness due to the peeling of the exterior sheet 14 and the backsheet 13 is exposed over the entire region of the dorsal crotch region 1Cb. It can reduce the fear of getting lost. Therefore, it is possible to reduce the risk of insects such as mosquitoes landing on the dorsal inseam region 1Cb, and it becomes easier to enhance the insect repellent effect of the dorsal inseam region 1Cb.

Note that, similarly to the dorsal crotch region 1Cb, the maximum value of the peel strength between the exterior sheet 14 and the back sheet 13 in the entire region of the ventral side central region Cac is the same as that of the exterior sheet 14 and the back sheet in the entire region of the ventral side region Cae. The peel strength may be higher than the maximum peel strength with No. 13. Further, both the ventral crotch region 1Ca and the dorsal crotch region 1Cb may have such peel strength.

Further, it is preferable that the maximum basis weight of the repellent AM in the dorsal side region Cbe is higher than the maximum basis weight of the repellent AM in the dorsal central region Cbc of the dorsal crotch region 1Cb. As a result, the back of the diaper 1 in the worn state is lower than when the maximum basis weight of the repellent AM in the dorsal central region Cbc is set higher than the maximum basis weight of the repellent AM in the dorsal side regions Cbe. It becomes easier to enhance the insect repellent effect in the area near the side leg opening LH.

In addition, not only in the dorsal inseam region 1Cb but also in the ventral inseam region 1Ca, the basis weight of the repellent AM in the ventral side region Cae is determined from the maximum basis weight of the repellent AM in the ventral central region Cac. The maximum value of may be set higher. Further, both the ventral crotch region 1Ca and the dorsal crotch region 1Cb may have the same configuration.

On the other hand, the maximum basis weight of the repellent AM in the dorsal central region Cbc of the dorsal crotch region 1Cb may be higher than the maximum basis weight of the repellent AM in the dorsal side region Cbe. The repellent AM used in the diaper 1 can exert its effect toward the leg openings LH on both sides in the width direction because the repellent AM in the back center region Cbc, which is provided in a larger amount than the back side region Cbe, can exert its effect toward the leg openings LH on both sides in the width direction. It is possible to reduce the possibility that AM will be used excessively.

In addition, not only in the dorsal inseam region 1Cb but also in the ventral inseam region 1Ca, the maximum basis weight of the repellent AM in the ventral central region Cac is the same as the basis weight of the repellent AM in the ventral side region Cae. may be higher than the maximum value of Further, both the ventral crotch region 1Ca and the dorsal crotch region 1Cb may have the same configuration.

FIG. 9 is a diagram illustrating each area in the diaper 1. FIG. 9 is a schematic diagram seen from the non-skin side, and for convenience, members such as the elastic members 23 and 33 are omitted from the illustration. As shown in FIG. 9, the back crotch region 1Cb has a first region Cb1 and a second region Cb2. The first region Cb1 is a region at the center in the longitudinal direction and the center in the width direction when the back crotch region 1Cb is divided into three equal parts in the longitudinal direction and the width direction. The second region Cb2 is a region of the back crotch region 1Cb excluding the first region Cb1. That is, the first region Cb1 is the middle region of the dorsal inseam region 1Cb, and the second region Cb2 is the region surrounding the first region Cb1 in the dorsal inseam region 1Cb.

It is preferable that the maximum value of the peel strength between the exterior sheet 14 and the back sheet 13 in the entire area of the first region Cb1 is greater than or equal to the maximum value of the peel strength between the exterior sheet 14 and the back sheet 13 in the entire area of the second region Cb2. . As a result, if the maximum value of the peel strength between the exterior sheet 14 and the back sheet 13 in the entire area of the first region Cb1 is lower than the maximum value of the peel strength between the exterior sheet 14 and the back sheet 13 in the entire area of the second region Cb2. In the dorsal crotch region 1Cb, the exterior sheet 14 and the backsheet 13 are completely separated, and the unevenness due to the peeling of the exterior sheet 14 and the backsheet 13 is exposed over the entire region of the dorsal crotch region 1Cb. It can reduce the fear of getting lost. Therefore, by making it difficult for insects such as mosquitoes to stay in the dorsal inseam region 1Cb, it becomes easier to enhance the insect repelling effect of the dorsal inseam region 1Cb. Note that the ventral crotch area 1Ca may have the same configuration as the dorsal crotch area 1Cb, or both the ventral crotch area 1Ca and the dorsal crotch area 1Cb may have such a configuration.

Further, it is preferable that the maximum basis weight of the repellent AM in the first region Cb1 is greater than or equal to the maximum basis weight of the repellent AM in the second region Cb2. As a result, the repellent AM provided in the first region Cb provided at the center (middle) of the dorsal crotch region 1Cb can exert its effect toward the leg openings LH on both sides in the width direction. . Therefore, it is possible to reduce the risk of providing an excessive amount of the repellent AM used in the diaper 1.

As described above, the back sheet 13, which is a liquid-impermeable sheet, is provided in the crotch region 1C on the non-skin side of the absorbent core 12. Preferably, the repellent AM is provided at least on the non-skin side of the backsheet 13. This can reduce the possibility that the repellent AM provided on the non-skin side of the back sheet 13 (liquid-impermeable sheet) will penetrate into the absorbent core 12, and remove urine and other excreta absorbed during wear. It is possible to reduce the risk of mixing of the repellent AM and the repellent AM.

Moreover, it is more preferable that the repellent AM is provided on the back sheet 13, which is a liquid-impermeable sheet. This reduces the risk of the repellent AM penetrating into the material and makes it easier to maintain the state in which the repellent AM is placed on the backsheet 13, making it easier to maintain the repellent effect of the repellent AM.

When the diaper 1 includes an SMS (spunbond/meltblown/spunbond) nonwoven fabric sheet, the repellent AM may be provided on the surface of the SMS nonwoven fabric sheet. Since the repellent AM provided on the surface of the SMS nonwoven fabric sheet does not pass through the melt blown layer of the SMS nonwoven fabric, it is easier to maintain the state placed on the surface of the SMS nonwoven fabric sheet, thereby increasing the repellent effect of the repellent AM. It becomes easier to sustain.

When the diaper 1 has a non-breathable film (sheet member), it is preferable that the diaper 1 in the unfolded and stretched state has a portion where the repellent AM overlaps the non-breathable film in the thickness direction. By overlapping the repellent AM with the non-breathable film in the thickness direction, it becomes easier to limit the direction in which the volatilized components of the repellent AM evaporate, and it becomes easier to make the repellent AM exhibit its effectiveness.

On the other hand, when the diaper 1 has a breathable film (sheet member), even if the diaper 1 in the unfolded and stretched state has a portion where the repellent AM overlaps the breathable film in the thickness direction. good. In the thickness direction, the repellent AM overlaps with the breathable film, making it easier to spread the volatilized components of the repellent AM over a wide range of the diaper 1.

The repellent AM of the diaper 1 may be provided on the ventral waist region 20 or the back waist region 30. The ventral waist portion 20 or the dorsal waist portion 30 has elastic members 23, 33 that are expandable and contractible in the width direction, but the ventral waist portion 20 and the dorsal waist portion 30 have elastic members 23, 33 that are not stretchable. In the case of having a non-stretchable region, it is preferable that the repellent AM overlaps the non-stretchable region when viewed in the thickness direction (front-back direction). It is possible to reduce the possibility that the repellent effect of the repellent AM is inhibited by wrinkles caused by the contraction of the elastic members 23, 33, and the repellent effect of the repellent AM can be effectively released to the outside.

Moreover, it is preferable that the crotch area 1C in which the repellent AM is provided in the diaper 1 has a mark part M that indicates the area where the repellent AM is provided. When the diaper 1 is viewed in the thickness direction, it is more preferable to have a portion where the portion where the repellent AM is provided and the mark portion M overlap. This makes it easier for the wearer to correctly recognize the part where the repellent effect of the repellent AM can be exerted.

The mark portion M of the diaper 1 of this embodiment is formed by printing in a color (for example, green, yellow, etc.) that is different from the surrounding color (for example, white). Specifically, a mark M printed on the backsheet 13 located in the crotch area 1C is visible from the outside of the diaper 1 via the exterior sheet 14.

As shown in FIG. 2, the mark part M has the characters "AntiMos" and a pattern indicating that the diaper 1 has an insect (mosquito) repelling effect. When the diaper 1 is viewed in the thickness direction, these letters and designs overlap with the portion where the repellent AM is provided. The wearer and the like can easily recognize the portion where the repellent AM is provided.

However, the mark portion AM is not limited to that illustrated in FIG. 2, and may be, for example, a pattern, a plain colored area, or the like. Further, the material on which the mark portion AM is printed is not limited to the backsheet 13, and may be printed on other materials (such as nonwoven fabric) that constitute the diaper 1. Further, the mark portion AM may be formed by a compressed portion (unevenness) obtained by compressing the diaper 1 in the thickness direction, or the waist elastic members 23 and 33 may be colored, or the repellent AM itself may be colored. , the mark portion AM may be formed in a color different from that of the surrounding area.

Regarding the diaper 1, it is preferable that the color of the crotch portion 1C has lower transparency than the color of the waist portions 1F and 1B. Insects such as mosquitoes tend to prefer the color of human skin, so by making the color of the crotch area 1C less permeable than the color of the torso areas 1F and 1B, the crotch area 1C has a tendency to prefer human skin color. The repellent effect of the crotch area 1C (around the wearer's legs) can be more easily enhanced than when the color has transparency equal to or higher than color 1B, and the amount of repellent AM used in the diaper 1 can be reduced.

Regarding the diaper 1, it is preferable that the thermal conductivity of the crotch portion 1C is lower than that of the waist portions 1F and 1B. Insects such as mosquitoes have the property of trying to approach objects that have a body temperature close to a person's body temperature, so the thermal conductivity of the crotch area 1C is lower than that of the torso areas 1F and 1B, so the thermal conductivity of the crotch area 1C is The repellent effect of the crotch region 1C (around the wearer's legs) can be easily enhanced, and the amount of repellent AM used in the diaper 1 can be reduced than when the thermal conductivity of the waist region 1F, 1B is higher than that of the waist region 1F, 1B. I can do it.

Further, in the diaper 1, it is preferable that the breathability of the crotch portion 1C is lower than that of the waist portions 1F and 1B. Insects such as mosquitoes have a tendency to like carbon dioxide and try to get close to objects, so by making the ventilation of the crotch area 1C lower than that of the torso areas 1F and 1B, the ventilation of the crotch area 1C can be improved. By setting the breathability to be higher than that of the waist portions 1F and 1B, it is possible to reduce the number of insects such as mosquitoes approaching the crotch portion 1C (leg opening LH). Therefore, the amount of repellent AM used in the diaper 1 can be reduced.

As mentioned above, the embodiments described above are intended to facilitate understanding of the present invention, and are not intended to be interpreted as limiting the present invention. It goes without saying that the present invention may be modified and improved without departing from its spirit, and that equivalents thereof are included in the present invention.

1 Diapers (pants-type disposable diapers, disposable diapers),
1F ventral waist circumference (one side waist circumference),
1B Dorsal waist circumference (other side waist circumference),
1C Inseam,
1Ca Ventral inseam area (unilateral inseam area),
1Cb dorsal inseam area (other side inseam area),
2 joint,
10 absorbent body,
11 top sheet, 12 absorbent core,
13 back sheet (skin side sheet), 14 exterior sheet (non-skin side sheet),
15 Leg elastic member,
16 Leak-proof wall part, 161 Leak-proof wall elastic member,
20 Ventral girth,
21 skin side sheet, 22 non-skin side sheet, 23 waist elastic member,
30 dorsal girth,
31 skin side sheet, 32 non-skin side sheet, 33 waist elastic member,
LH opening around the legs, BH opening around the torso,
aa reference area, ba comparison area,
ba1, ba2, ba3 regions,
Cc central region, Ce lateral region,
Cbc dorsal central region, Cbe dorsal lateral region,
M Mark part

The main invention for achieving the above object has a longitudinal direction, a width direction, and a thickness direction that intersect with each other in a deployed state and an extended state, and a one-side girth part provided on one side in the longitudinal direction; A disposable diaper for infants and toddlers, comprising a second side waistline section provided on the other side in the longitudinal direction and a crotch section, wherein the one side waistline section and the other side waistline section are located at both ends in the width direction. has a joint portion for joining the one side waistline portion and the other side waistline portion, and in the longitudinal direction, an area where the joint portion is located is the one side waistline portion and the other side waistline portion. , and in the longitudinal direction, a region between the one side waistline part and the other side waistline part is the crotch area, and a volatile insect repellent is provided, and the insect repellent is provided with a volatile insect repellent . The repellent is provided at a position that overlaps with the absorbent core in the thickness direction, and the repellent is provided at a position that overlaps the absorbent core in the longitudinal direction, and at a dorsal girth portion as the other side girth portion and in the longitudinal direction of the disposable diaper. In an attracting insect count test using female adult Aedes aegypti mosquitoes on the disposable diaper 20 minutes after removal from the package, The disposable diaper for infants is characterized in that the average number of insects colonizing the crotch region is smaller than the total average number of insects colonizing the one side waistline portion and the other side waistline portion.
In addition, another main invention for achieving the above object has a longitudinal direction, a width direction, and a thickness direction that intersect with each other in the unfolded state and the stretched state, and one side provided on one side in the longitudinal direction. A disposable diaper for infants, comprising a side girth part, the other side girth part provided on the other side in the longitudinal direction, and an absorbent core , the diaper being provided with a volatile insect repellent. and a square reference area having a length of 1 cm in the longitudinal direction and the width direction, a square comparison area having a length of 1 cm in the longitudinal direction and the width direction, and an end area on the other side. , the reference region overlaps the absorbent core when viewed in the thickness direction, and is located between the center position of the disposable diaper and the other end of the absorbent core in the longitudinal direction. The center of the reference area is located between the center of the disposable diaper and the other end of the absorbent core in the longitudinal direction, and , and the other side end region is a region from one side end to the other side end in the width direction of the other side waistline portion, and the other side end region of the disposable diaper The area has a length of 1 cm from the end to the one side, and no matter where the comparison area is placed in the other end area, the basis weight of the repellent in the reference area is equal to the basis weight of the repellent in the reference area. A disposable diaper for infants, characterized in that the basis weight is higher than the basis weight of the repellent described above.
Other features of the present invention will become apparent from the description of this specification and the accompanying drawings.

Claims (16)

In the unfolded state and the stretched state, the longitudinal direction, the width direction, and the thickness direction intersect with each other,
A disposable diaper comprising one side waist portion provided on one side in the longitudinal direction, another side waist portion provided on the other side in the longitudinal direction, and a crotch portion,
Insect repellents are provided,
In an insect attraction test of the disposable diaper within 20 minutes after taking it out of the package,
The average number of insects colonizing the crotch area is
A disposable diaper characterized in that the number of settled insects is smaller than the average number of colonized insects in the one side waistline portion and the other side waistline portion. The disposable diaper according to claim 1,
In the attracting insect count test of the disposable diaper after 4 hours have passed after taking it out from the package,
The average number of insects colonizing the crotch after 4 hours is
A disposable diaper characterized in that the number of settled insects is smaller than the average number of settled insects after 4 hours in the one side waistline portion and the other side waistline portion. In the unfolded state and the stretched state, the longitudinal direction, the width direction, and the thickness direction intersect with each other,
A disposable diaper comprising one side waist portion provided on one side in the longitudinal direction, another side waist portion provided on the other side in the longitudinal direction, and an absorbent core,
Insect repellents are provided,
a square reference area having a length of 1 cm in the longitudinal direction and the width direction;
a square comparison area with a length of 1 cm in the longitudinal direction and the width direction;
the other end region;
has
The reference area is
overlaps with the absorbent core when viewed in the thickness direction, and
located between the center position of the disposable diaper and the other end of the absorbent core in the longitudinal direction,
The other side end region is
A region from one side end to the other side end in the width direction of the other side waistline portion, and
A region having a length of 1 cm from the other end of the disposable diaper to the one side,
No matter where the comparison area is placed in the other end area, the basis weight of the repellent in the reference area is higher than the basis weight of the repellent in the comparison area. . The disposable diaper according to claim 3,
The center of the reference area is
in the longitudinal direction, located at the center of the center of the disposable diaper and the other end of the absorbent core, and
located at the center of the disposable diaper in the width direction,
No matter where the comparison area is placed in the other end area, the basis weight of the repellent in the reference area is higher than the basis weight of the repellent in the comparison area. . In the unfolded state and the stretched state, the longitudinal direction, the width direction, and the thickness direction intersect with each other,
A disposable diaper comprising one side waist portion provided on one side in the longitudinal direction, another side waist portion provided on the other side in the longitudinal direction, and a crotch portion,
Insect repellents are provided,
The crotch portion has a non-skin side sheet portion located closest to the non-skin side, and a skin side sheet portion adjacent to the non-skin side sheet portion from the skin side,
The non-skin side sheet part and the skin side sheet part are joined with an adhesive,
The crotch area includes one side crotch area and the other side crotch area,
The one side crotch region is a region from the one end of the crotch section to the center position of the disposable diaper in the longitudinal direction,
The other side crotch region is a region from the other end of the crotch section to the center position of the disposable diaper in the longitudinal direction,
From the maximum value of the peel strength between the non-skin side sheet part and the skin side sheet part in the entire area of the one side crotch area, the peel strength of the non-skin side sheet part and the skin side sheet part in the entire area of the other side crotch area. A disposable diaper characterized by having a higher maximum value of peel strength. The disposable diaper according to claim 5,
A disposable diaper characterized in that a maximum basis weight of the repellent in the other side crotch region is higher than a maximum basis weight of the repellent in the one side crotch region. The disposable diaper according to claim 5,
A disposable diaper characterized in that a maximum basis weight of the repellent in the one side crotch region is higher than a maximum basis weight of the repellent in the other side crotch region. The disposable diaper according to any one of claims 1 to 7,
A disposable diaper, wherein the other side waistline portion is a backside waistline portion. The disposable diaper according to any one of claims 5 to 7,
the crotch region has a central region and side regions;
The central region is a central region in the width direction when the crotch is divided into three equal parts in the width direction,
The side regions are regions located on both sides of the central region,
In at least one of the one side crotch area or the other side crotch area,
From the maximum value of the peel strength between the non-skin side sheet part and the skin side sheet part in the entire area of the central area, the peel strength between the non-skin side sheet part and the skin side sheet part in the entire area of the side area. A disposable diaper characterized by having a higher maximum value of. The disposable diaper according to any one of claims 5 to 7,
the crotch region has a central region and side regions;
The central region is a central region in the width direction when the crotch is divided into three equal parts in the width direction,
The side regions are regions located on both sides of the central region,
In at least one of the one side crotch area or the other side crotch area,
The maximum value of the peel strength between the non-skin side sheet part and the skin side sheet part in the entire area of the central region is the peel strength between the non-skin side sheet part and the skin side sheet part in the entire area of the side area. A disposable diaper characterized by having a value higher than the maximum value of . The disposable diaper according to any one of claims 1 to 6,
Equipped with an inseam area,
the crotch region has a central region and side regions;
The central region is a central region in the width direction when the crotch is divided into three equal parts in the width direction,
The side regions are regions located on both sides of the central region,
The crotch area includes one side crotch area and the other side crotch area,
The one side crotch region is a region from the one end of the crotch section to the center position of the disposable diaper in the longitudinal direction,
The other side crotch region is a region from the other end of the crotch section to the center position of the disposable diaper in the longitudinal direction,
In at least one of the one side crotch area or the other side crotch area,
A disposable diaper characterized in that a maximum basis weight of the repellent in the side regions is higher than a maximum basis weight of the repellent in the central region. The disposable diaper according to any one of claims 1 to 6,
Equipped with an inseam area,
the crotch region has a central region and side regions;
The central region is a central region in the width direction when the crotch is divided into three equal parts in the width direction,
The side regions are regions located on both sides of the central region,
A disposable diaper characterized in that a maximum basis weight of the repellent in the central region is higher than a maximum basis weight of the repellent in the side regions. The disposable diaper according to any one of claims 4 to 6,
The other side crotch region includes a first region and a second region,
The first region is a region at the center in the longitudinal direction and the center in the width direction when the other side crotch region is divided into three equal parts in the longitudinal direction and the width direction,
The second region is a region of the other side crotch region excluding the first region,
The maximum value of the peel strength between the non-skin side sheet part and the skin side sheet part in the entire area of the first region is the peel strength between the non-skin side sheet part and the skin side sheet part in the entire area of the second area. A disposable diaper characterized by having strength greater than the maximum value. The disposable diaper according to any one of claims 1 to 6,
Equipped with an inseam area,
The crotch area includes one side crotch area and the other side crotch area,
The one side crotch region is a region from the one end of the crotch section to the center position of the disposable diaper in the longitudinal direction,
The other side crotch region is a region from the other end of the crotch section to the center position of the disposable diaper in the longitudinal direction,
The other side crotch region includes a first region and a second region,
The first region is a region at the center in the longitudinal direction and the center in the width direction when the other side crotch region is divided into three equal parts in the longitudinal direction and the width direction,
The second region is a region of the other side crotch region excluding the first region,
A disposable diaper characterized in that a maximum basis weight of the repellent in the first region is greater than or equal to a maximum basis weight of the repellent in the second region. The disposable diaper according to any one of claims 1 to 6,
Equipped with an inseam area,
The crotch region has an absorbent core and a liquid-impermeable sheet provided on the non-skin side of the absorbent core,
A disposable diaper, wherein the repellent is provided at least on a non-skin side of the liquid-impermeable sheet. The disposable diaper according to any one of claims 1 to 6,
Equipped with an inseam area,
The repellent is provided in the crotch area,
The crotch portion has a mark portion indicating an area where the repellent is provided,
A disposable diaper characterized by having a portion where a portion provided with the repellent and the mark portion overlap when viewed in the thickness direction.

Images