TWI576099B - Disposable disposable diaper - Google Patents

Description

Disposable disposable diaper

The present invention relates to a disposable disposable diaper.

In the prior art, a disposable disposable diaper has a front waistline region, a rear waistline region, and a crotch region, and is formed with a pair of leg-opening portions, and is provided to be carried across the underarm region. An absorbent body extending toward the front waist region and the back waist region.

In general, since the navel portion of the baby (especially the newborn) has an undried and wound-like condition, the end portion of the disposable diaper of the disposable diaper touches the above-mentioned situation. In the navel of the baby's navel, there will be a navel on the baby's navel that may have caused the above-mentioned condition, or the baby may feel pain.

Therefore, a disposable disposable diaper suitable for the above-mentioned case is used to protect the navel of the above-mentioned sensitive and fragile baby, and the structure is formed on the front waist region of the disposable diaper after use. The notch portion has a U-shaped or V-shaped shape that is convex toward the center of the product in the width direction of the disposable disposable diaper. (For example, refer to Patent Documents 1 and 2).

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Publication No. Hei 1-162806

[Patent Document 2] JP-A-62-199802

In general, when a mother holds a baby (especially a newborn) for breastfeeding, the baby's back side is bent into a rounded posture, so that the disposable diaper and the baby's navel are often caused. Part of the situation that produces friction.

In addition, recent mothers have learned that when holding a baby, it is optimal for the baby to bend the back side into a rounded posture, which is not only easy for the baby to breathe but also to maintain a good awakening state. There will be situations in which the baby is actively taken to the above posture.

In the above case, the end portion of the product in the longitudinal direction L of the disposable disposable diaper (especially the end portion of the disposable diaper sheet to be cut) and the navel portion of the baby are located. In the near position, there is a user who is unsatisfied with the structure, so that a disposable disposable diaper capable of further protecting the navel portion of the baby is necessary.

Here, the present invention has been made in view of the above problems, and an object thereof is to provide a method of bending a back side of a baby even if it is taken In the case of a rounded posture, the disposable diaper can also be protected from the navel portion of the baby.

According to a first aspect of the present invention, a disposable disposable diaper has a front waistline region, a rear waistline region, and a crotch region between the front waistline region and the rear waistline region, and a pair of leg circumferences are formed. The opening portion further includes an absorber that extends across the crotch region and extends toward the front waistline region and the rear waistline region, and further includes a product longitudinal direction from the front waistline region toward the rear waist region, and The product longitudinal direction is a product width direction orthogonal to the product, and is characterized in that at least two or more non-woven sheets are disposed in the front waist region in the vicinity of the center in the product width direction and including the end portion in the longitudinal direction of the product. The end portion of the product in the longitudinal direction is formed by compressing the fibers in the nonwoven fabric sheet to reduce the volume thereof, and the fibers in the non-woven fabric sheet are not dissolved. The staggered state is used for joining.

10‧‧‧Disposable disposable diapers

20‧‧‧ Front waist area

25‧‧‧胯下区域区

30‧‧‧After waist area

35‧‧‧ leg opening

40‧‧‧ absorber

40a‧‧‧Absorbable chip

40b‧‧‧chip cladding material

50‧‧‧Skin sheet

50a‧‧‧ convex

50b‧‧‧ recess

50c‧‧‧ opening

60a‧‧‧back sheet

60‧‧‧Outer sheets

70‧‧‧Flanking

75‧‧‧ Leg flexion

80‧‧‧ leg side pleats

81‧‧‧ joint part

82‧‧‧Free end section

90‧‧‧ buckle

90a‧‧‧Buckle belt

200a‧‧‧ Pants expansion joint

Fig. 1 is a developed plan view of a disposable disposable diaper according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view taken along the line F-F of the disposable disposable diaper of the first embodiment of the present invention.

Fig. 3 is an enlarged view of a region A of the F-F cross-sectional view in the developed plan view of the disposable disposable diaper according to the first embodiment of the present invention.

Fig. 4 is a part of a G-G sectional view in a plan view of the disposable disposable diaper according to the first embodiment of the present invention.

Fig. 5 is a view for explaining a method of applying an adhesive for a disposable disposable diaper according to the first embodiment of the present invention.

(First embodiment of the present invention)

The disposable disposable diaper 10 according to the first embodiment of the present invention will be described with reference to Figs. 1 to 5 .

In the description of the following drawings, the same or similar parts are given the same or similar symbols. However, it should be noted that the drawings are only schematic diagrams, and the ratios of the dimensions are not the same as the actual products.

Therefore, the specific dimensions and the like need to be judged by considering the following description. In addition, the drawings may also include portions having different dimensional relationships or ratios from each other.

Fig. 1 is a developed plan view of the disposable disposable diaper 10 of the present embodiment. Fig. 2 is a cross-sectional view of the disposable disposable diaper 10 taken along the line F-F shown in Fig. 1. Further, in the expanded plan view shown in Fig. 1, the leg stretch portion 75 and the leg side gather portion 80 are extended to the surface sheet 50 or the side flap portion 70 of the disposable disposable diaper 10, and the like is not formed with wrinkles. The pattern of the state until the state of the fold.

As shown in Fig. 1, the disposable disposable diaper 10 of the present embodiment has a front waistline region 20, a crotch region 25, and a rear waistline region 30. Further, the disposable disposable diaper 10 is formed with a pair of leg-opening portions 35.

Here, the front waistline region 20 is a portion that is in contact with the front waistline portion of the wearer, and the rear waistline region 30 is a portion that is in contact with the wearer's rear waistline portion, and the underarm region 25 is tied to the front waistline. A portion between the region 20 and the back waistline region 30.

Further, in the present embodiment, the direction from the front waistline region 20 toward the rear waistline region 30 is referred to as the product longitudinal direction L, and the direction orthogonal to the product longitudinal direction L is referred to as the product width direction W.

The disposable disposable diaper 10 of the present embodiment is provided with an absorbent body 40 which is placed across the crotch region 25 and extends toward the front waistline region 20 and the rear waistline region 30. As shown in Fig. 2, the absorber 40 is composed of an absorbent chip 40a and a chip covering member 40b.

The absorbent chip 40a is the same as the member or material used in the disposable disposable diaper, and can be suitably formed using a publicly known member or material such as pulverized pulp or superabsorbent polymer. 40a. The absorptive chip 40a is covered by the sheet-like chip covering material 40b.

The chip cladding material 40b is a sheet for covering the absorbent chip 40a. At least one portion of the chip covering member 40b that is in contact with the skin surface side is formed of various fiber nonwoven fabrics or thin paper sheets having liquid permeability.

For example, using a mass of about breathable nonwoven are 10 ~ 30g / m ^2, spunbond nonwoven fabric, SMS (Spunbond-Meltblown-Spunbond ) non-woven fabric, or a mass of about 10 ~ 30g / m thin paper sheet ² as for A member constituting the chip covering member 40b.

Moreover, as shown in FIG. 2, the surface side (contact with the skin surface side) of the absorber 40 is provided with the liquid-permeable surface sheet 50, and the back side of the absorber 40 (non-contacts the skin surface side). There is provided a liquid-impermeable back sheet 60a. Further, as shown in Fig. 2, the back side of the back sheet 60a (not in contact with the skin surface side) may be provided with an exterior sheet 60 (non-woven sheet).

The side edge portions of the absorber 40 in the product width direction W are provided with side flap portions 70, respectively. The side flap portion 70 is composed of one piece or a non-woven fabric in which a plurality of sheets of two or more sheets are stacked.

Further, as shown in Fig. 1, the disposable disposable diaper 10 of the present embodiment includes a pair of fastening tapes 90 in the back waistline region 30, and is non-contacting the skin surface in the front waistline region 20. The specific area on the side is provided with a buckled belt 90a.

Here, the buckle 90 can be held by the disposable diaper 10 in the wearer's body by being attached to the adhered tape 90a.

Further, as shown in Fig. 1, the disposable disposable diaper 10 of the present embodiment may be provided with a crotch expansion-contraction portion 200a formed in the crotch region 25 in the absorbent body arrangement region in which the absorbent body 40 is disposed. And scalable.

Specifically, as shown in Fig. 2, the crotch expansion-contraction portion 200a may be provided between the absorber 40 (chip cladding material 40b) and the back sheet 60a.

Here, the crotch expansion-contraction portion 200a may be formed so as to be expandable and contractible in the longitudinal direction L of the product, or to be stretchable in the product width direction W, or to be stretchable in both the product longitudinal direction L and the product width direction W.

The crotch stretchable portion 200a is configured to maintain a portion of the crotch region 25 in a shape flatter than other portions of the absorbent body 40 when the disposable diaper 10 is worn after use.

The crotch expansion-contraction portion 200a is provided separately from the leg stretch portion 75 described below, and is overlapped with the absorbent chip 40a (in the present embodiment, it means between the chip cover member 40b and the back sheet 60a). The position is configured to shrink the length of the absorbent chip 40a in the product width direction W by 60% or more.

As described above, the portion in which the absorbent chip 40a is disposed is shrunk by the crotch expansion-contraction portion 200a, and the absorbent chip 40a is shrunk. As a result, the portion where the absorptive chip 40a is shrunk becomes easier to maintain a flat shape than the portion where the absorptive chip 40a does not shrink.

On the other hand, the absorptive chip 40a located in the front waistline region 20 or the rear waistline region 30 outside the crotch expansion-contraction portion 200a in the longitudinal direction L of the cuff is not shrunk by the crotch expansion-contraction portion 200a.

Therefore, the disposable disposable diaper 10 is used by the buckle 90 In the state in which the wearer's waist or waist is held, the crotch region 25 of the disposable disposable diaper 10 is maintained in a flat shape of the crotch expansion-contraction portion 200a without excessively adhering to the wearer's body. And will be properly configured along the wearer's body.

Further, when the crotch expansion-contraction portion 200a can be expanded and contracted in the longitudinal direction of the product, the front waistline region 20 and the rear waistline region 30 are easily raised by the contraction of the crotch expansion-contraction portion 200a, and can be worn by the wearer when worn. The thighs form a flat underarm area along the body.

As a result, since the front waistline region 20 and the rear waistline region 30 stand up from the crotch expansion-contraction portion 200a, the wearability of the disposable disposable diaper 10 to the wearer is improved.

That is, the crotch region 25 of the disposable disposable diaper 10 is placed on the lower portion of the wearer's crotch by the contraction of the crotch expansion-contraction portion 200a, and the disposable disposable diaper 10 can be stably worn.

Further, the crotch expansion-contraction portion 200a may be configured to extend across the center O1 of the disposable disposable diaper 10 in the longitudinal direction L of the product, and to extend toward the front waistline region 20 side and the rear waistline region 30 side.

Further, the center O2 of the crotch elastic-contraction portion 200a in the longitudinal direction L of the product is disposed on the side of the front waistline region 20 at the center O1 of the disposable disposable diaper 10 in the longitudinal direction L of the product.

On the other hand, when the wearer moves (especially when lifting the leg, standing up, or sitting down), the amount of stretch of the surface of the wearer's body (the amount of change in length), the back side (hip) ratio The abdomen side becomes larger.

Therefore, the center O2 of the crotch expansion-contraction portion 200a in the product longitudinal direction L is disposed on the front waistline region 20 side by the center O1 of the disposable disposable diaper 10 disposed in the longitudinal direction L of the product, so that the rear waistline region is formed. The length of the product longitudinal direction L of 30 is longer than the length of the front waistline region 20 in the longitudinal direction L of the product, and the front waistline region 20 of the disposable disposable diaper 10 can be suppressed even when the wearer acts. The rear waistline region 30 is moved in the longitudinal direction L of the product by the action of the wearer's skin, and the navel portion of the wearer and the front waistline region 20 of the disposable disposable diaper 10 can be suppressed. The frequency and extent of interference.

That is, according to the above configuration, the circumference of the navel portion can be protected even when the wearer moves.

In the present embodiment, the crotch expansion-contraction portion 200a may be configured by a stretchable sheet member.

For example, a stretchable film in which a thermoplastic resin such as urethane or styrene is melted into a film shape, or a stretchable nonwoven fabric formed of a stretchable fiber, or a stretchable film or a stretchable nonwoven fabric can be used. A composite sheet obtained by partially cutting or applying an embrittled non-stretchable sheet to be bonded is used as the stretchable sheet member.

In addition, the filament-like or band-shaped stretchable elastic members formed of polyurethane elastic fibers or natural rubber may be arranged side by side to each other, and may be configured as a crotch elastic portion 200a instead of the stretchable sheet. member.

In the above case, the rigidity of the member for constituting the absorbent chip 40a and the disposable disposable diaper 10 is considered, and although the thickness of the elastic member to be used or the pitch of the arrangement can be appropriately selected, However, when the disposable disposable diaper 10 is in a natural state (non-stretched state), the entire area of the side edge portion in the product width direction W of the absorbent chip 40a is preferably in a contracted state.

Specifically, the expansion ratio of the crotch expansion-contraction portion 200a is preferably 1.2 times or more and 1.8 times or less. For example, in the present embodiment, the expansion ratio of the crotch expansion-contraction portion 200a may be set to 1.4 times.

The expansion ratio refers to the degree of expansion and contraction of the crotch expansion-contraction portion 200a in the telescopic direction (in the present embodiment, the longitudinal direction L of the product), as defined below.

The expansion ratio = (the length of the expansion and contraction direction of the crotch expansion-contraction portion 200a in the maximum extension state) / (the length of the expansion and contraction direction of the crotch expansion-contraction portion 200a in the natural state)

Further, in the present specification, the above-described expansion ratio is measured, for example, in the following manner.

In the first step, when the disposable disposable diaper 10 is sealed in a package or the like, the disposable disposable diaper 10 is taken out from the package, and placed at 20 ° C ± 2 ° C in this state, and 60 minutes in a relative humidity of 60% ± 5% RH.

In the second step, the length of the stretched direction of the desired region in the above state (that is, the natural state) and the state in which the wrinkles are extended from the natural state by the elastic member so that the wrinkles are not visually confirmed are measured. (ie, the maximum stretch state) the length of the stretch direction of the desired area.

As described above, by setting the expansion ratio of the crotch expansion-contraction portion 200a to 1.2 times or more and 1.8 times or less, it is possible to appropriately follow the stretching of the wearer's skin.

For example, when the wearer takes a posture in which the front side of the body is contracted, the skin on the buttock side of the wearer extends about 30% with respect to the state after the body is stretched.

In other words, when the expansion ratio of the crotch expansion-contraction portion 200a is 1.2 or less, the crotch expansion-contraction portion 200a in the natural state cannot be sufficiently shrunk, and the disposable crotch portion 200a is not used. The difference in the ease of bending of the disposable diaper 10 is small, causing the front waistline region 20 to not rise up at the desired position.

On the other hand, when the expansion ratio of the crotch expansion-contraction portion 200a is set to be larger than 1.8 times, the contraction size in the contraction direction of the crotch expansion-contraction portion 200a becomes excessively large, so that the region having the crotch expansion-contraction portion 200a is likely to be changed. It is more likely that the disposable disposable diaper 10 will be deviated below the wearer than the state in which it is closer to the body system.

Further, the amount of contraction of the crotch stretchable portion 200a in the longitudinal direction L of the product may be 2 to 8% of the length of the disposable diaper 10 in the longitudinal direction L of the product.

In addition, the amount of shrinkage refers to a length "b (mm)" when the wrinkle is elongated and the surface of the sample is close to a smooth state, and a length "a (mm) in a natural state along the direction of expansion and contraction of the sample. The difference between the two can be calculated by (ba).

In the measurement of the "length" in the present specification, a tape measure (skin body: coated with PVC containing glass fibers) manufactured by Shinwa Rules Co., Ltd. was used to measure the portion to be measured.

The inventors have confirmed that when the amount of shrinkage in the product longitudinal direction L of the crotch stretchable portion 200a is set to 2 to 8% of the length of the product longitudinal direction L of the discarded disposable diaper 10, it is discarded after use. During the wearing of the disposable diaper 10 to the wearer, the crotch expansion-contraction portion 200a can most easily follow the wearer's body.

Here, when the contraction amount of the crotch stretched portion 200a in the product longitudinal direction L is set to be larger than 8%, the crotch stretchable portion 200a is excessively shrunk, and the product longitudinal direction L of the disposable disposable diaper 10 is used. The length may be insufficient, so that the disposable disposable diaper 10 becomes difficult to wrap around the wearer's body, and in the underarm region 25, the disposable disposable diaper 10 and the wearer's body may be excessively It is easy to cause deviations when it is close.

On the other hand, when the contraction amount of the crotch expansion-contraction part 200a in the longitudinal direction L of the product is set to 2% or less, it becomes difficult to find that the disposable diaper 10 is close to the wearer's body after the crotch expansion-contraction part 200a can be used. effect.

Further, as shown in Fig. 1, the front side (the surface sheet 50 side) of the absorber 40 is provided with a pair of leg stretchable portions (leg gathers) 75 formed along the leg opening portion 35 and at least It is stretched in the longitudinal direction L of the product.

The leg stretch portion 75 is longer in the longitudinal direction of the product than the crotch stretch portion 200a, and is in the width direction of the product W. The expansion and contraction portion 200a is further outside.

For example, as shown in Fig. 1, the leg stretchable portion 75 may be constituted by a predetermined number of elastic members (three elastic members in the example of Fig. 1).

Further, the leg stretch portion 75 is formed in the same manner as the crotch stretch unit 200a, and may be formed by a stretchable sheet member.

Specifically, the width of the stretchable sheet member (the width in the product width direction W in the natural state of the discarded disposable diaper 10) is preferably at least 5 mm or more and 45 mm or less in the underarm region 25, Good is 12.5 or more and 35mm or less.

Here, when the width of the stretchable sheet member is less than 5 mm, the effect of substantially enclosing the leg circumference of the wearer cannot be produced, and when the width of the stretchable sheet member exceeds 45 mm, the leg circumference is The area may become wider, causing the above-mentioned stretchable sheet member to be caught on the body side of the wearer or to be easily turned outward.

The expansion ratio of the leg stretchable portion 75 is preferably 1.5 to 2.4 times. For example, in the present embodiment, the expansion ratio of the leg stretchable portion 75 may be set to 1.9 times. The regulation of the expansion ratio of the leg stretchable portion 75 is the same as the expansion ratio of the crotch stretchable portion 200a.

Further, as shown in Fig. 1, the pair of leg stretchable portions 75 (in the center of the product width direction W) may include a pair of leg side pleat portions 80 extending in the longitudinal direction L of the product. .

As shown in Fig. 1, the leg side pleat portion 80 has an engaging portion 81 and a free end portion 82 which are located at the engaging portion 81. The opposite side is provided and an elastic member 83 is disposed.

Here, the joint portion 81 may be joined to the top sheet 50, the back sheet 60a, or the exterior sheet 60.

Further, the end portion on the front waistline region 20 side and the end portion on the rear waistline region 30 side in the product longitudinal direction L of the free end portion 82 are joined to the surface sheet 50. The joint portion 81 is disposed between the crotch elasticized portion 200a and the leg stretched portion 75 in the product width direction W.

The leg side crease portion 80 stands up with the joint portion 81 as a base end portion when worn, and the free end portion 82 serves as a apex portion to come into contact with the wearer's skin.

Further, the disposable disposable diaper 10 of the present embodiment, as shown in Fig. 1, is provided in the front waistline region 20 at the vicinity of the center of the product width direction W and including the end portion E1 of the product longitudinal direction L. A notch portion 500 is formed in a region where two or more non-woven sheets are disposed.

For example, as shown in FIG. 2, the notch portion 500 is formed in a region where at least two non-woven sheets composed of the surface sheet 50 and the exterior sheet 60 are disposed.

Here, from the viewpoint of gas permeability and flexibility, the notch portion 500 is preferably formed on two non-woven sheets, that is, in a region where only the surface sheet 50 and the exterior sheet 60 are disposed.

According to the above configuration, since the film sheet is disposed in the region where the notch portion 500 is formed, the hardness of the above region can be reduced.

Further, when the back sheet 60a is a non-woven sheet, the notch portion 500 may be formed by arranging the surface sheet 50 and the outer sheet. The area of the sheet 60 spans the area where the top sheet 50, the back sheet 60a, and the exterior sheet 60 are disposed.

However, when the back sheet 60a is not a non-woven sheet but a film sheet or the like, the notch portion 500 cannot be formed in a region where the back sheet 60a is disposed.

Further, the notch portion 500 has a convex shape toward the center of the product width direction W of the disposable disposable diaper 10, and is notched when viewed from a plan view of the disposable disposable diaper 10. The curve can also be formed into a serpentine shape.

In other words, when viewed from a plan view of the disposable disposable diaper 10, the notch curve of the notch portion 500 is formed as a curve composed of a convex shape overlapping in two layers, and the apex of the second layer is convex. It can also be arranged in the center of the product width direction W.

Here, when the curve of the notch of the notch portion 500 is formed as a curve composed of a single layer of convex shape, the front waistline region 20 of the disposable disposable diaper 10 is cut to be deeply cut.

For example, in the case where the length of the product longitudinal direction L in the product width direction W is formed with a notch portion 500 of 20 mm, when the notch portion 500 is formed by a curve composed of a single layer of convex shape, there is a The impression of external leakage is generated, but when the above-mentioned notch portion 500 is formed by a curve composed of convex shapes overlapping in two layers, not only does it have an impression that external leakage is generated, but also it can be avoided. The diaper 10 and the navel portion of the baby are rubbed.

In addition, in the use of a convex shape that is overlapped into two layers In the case where the curved portion is formed into the notch portion 500, when the disposable disposable diaper 10 is separated from the wearer's abdomen, a notch having a turning point of a length of a plurality of products in the longitudinal direction L is formed in the product width direction W. The curve not only reduces the gap between the wearer's abdomen and the disposable disposable diaper 10, but also makes the gap less conspicuous.

Further, the number of sheets arranged in the disposable disposable diaper 10 of the present embodiment may be configured such that the end portion E1 in the longitudinal direction L of the product from the front waistline region 20 is used as a disposable The center O of the longitudinal direction L of the product of the disposable diaper 10 is sequentially increased.

For example, as shown in FIG. 2, in the disposable disposable diaper 10 of the present embodiment, first, a surface sheet 50 and an exterior are disposed in a peripheral region of the end portion E1 of the product longitudinal direction L in the front waistline region 20. Sheet 60.

Next, the surface sheet 50, the back sheet 60a, and the exterior sheet 60 are disposed in a region adjacent to the peripheral region of the end portion E1 of the product longitudinal direction L in the front waistline region 20.

Next, the surface sheet 50, the chip covering member 40b, the back sheet 60a, and the exterior sheet 60 are disposed in a region including the center O in the longitudinal direction L of the product in the front waistline region 20.

As described above, in the case where the notch portion 500 is provided, the notch portion 500 is formed as a starting point of turning, and when a gap is formed between the disposable disposable diaper 10 and the wearer's body (near the abdomen portion or the waist portion) It is easy to generate wrinkles which extend from the notch part 200 toward the longitudinal direction L of a product.

In addition, the characteristic shape characteristic of a newborn or a low-month-old baby is that the circumference of the abdomen protrudes toward the outside, and the change from the navel portion to the lower part of the crotch is large.

Therefore, in order to use the end portion of the disposable waist diaper 10 on the side of the front waistline region 20 to be more conformable to the body of the above-described body type, the thickness of the body of the disposable disposable diaper 10 is always made to be adhered. The end portion E1 of the fastener tape 90a toward the product longitudinal direction L in the front waistline region 20 is gradually thinned, and the periphery of the notch portion 500 for the navel portion is likely to follow the body of the wearer (newborn, etc.), and There is less difficulty in creating a gap between the disposable diaper 10 and the wearer's body after use.

Further, in the disposable disposable diaper 10 of the present embodiment, the end portion E1 in the longitudinal direction L of the product in the front waistline region 20 is configured to compress the fibers in the topsheet 50 and the exterior sheet 60. The volume is reduced, and the bonding is performed by the state in which the fibers in the surface sheet 50 and the exterior sheet 60 are not dissolved and are staggered.

Here, since the end portion E1 of the product longitudinal direction L in the front waistline region 20 is not provided with the film sheet and is composed only of the nonwoven fabric sheet (fiber layer), by using the fibers constituting the end portion E1. The cutter having a lower melting point is cut, and the bonding can be performed in a state in which the fibers in the surface sheet 50 and the exterior sheet 60 are not dissolved and interlaced.

For example, in the disposable disposable diaper 10 of the present embodiment, the shape of the end portion E1 in the longitudinal direction L of the product in the front waistline region 20 may be a shape as shown in Fig. 3(a) or may be Figure 3 The shape shown in (b) is also acceptable.

Further, in the disposable disposable diaper 10 of the present embodiment, as shown in FIG. 4, the surface sheet 50 may be provided with a convex portion 50a and a concave portion 50b. For example, as shown in Fig. 4, the convex portion 50a and the concave portion 50b may be configured to continuously extend in the longitudinal direction L of the product.

According to the above configuration, the contact area of the notch portion 500 which is in contact with the skin around the navel portion of the wearer and the navel portion can be reduced, and the contact area extending in the longitudinal direction L of the product can be formed. The uneven shape can improve the air permeability in the direction of the wearer's body, and can also suppress the skin around the navel portion of the wearer from being sultry because of the disposable disposable diaper 10.

Further, in the disposable disposable diaper 10 of the present embodiment, as shown in Fig. 4, the surface sheet 50 may be provided with an opening 50c. Here, as shown in Fig. 4, the opening 50c may be provided in the recess 50b.

According to the above configuration, it is possible to suppress the skin around the navel portion of the wearer and the skin around the navel portion from being sultry due to the use of the disposable disposable diaper 10. Further, by providing the opening 50c in the recess 50b, moisture on the surface of the wearer's skin can be discharged to the outside of the disposable disposable diaper 10 without directly contacting the wearer's body.

Further, in the disposable disposable diaper 10 of the present embodiment, the nonwoven sheets, for example, the surface sheet 50 and the exterior sheet 60, may be coated with a linear adhesive as shown in Fig. 5. Engaged at 50d.

Moreover, as shown in FIG. 5, after the use of the present embodiment, The interval W2 between the adhesives 50d applied to the disposable diaper 10 in the product width direction W may be configured to be larger than the interval W1 of the openings 50c in the product width direction W.

According to the above configuration, since the opening 50c is not entirely covered by the adhesive 50d, the gas permeability of the surface sheet 50 provided with the opening 50c can be achieved around the navel portion of the wearer.

For example, for the surface sheet 50, the adhesive 50d may be applied in a planar shape. Here, the "planar shape" means a state in which the adhesive sheet 50d is applied to the surface sheet 50 with a constant width. However, a part of the planar coating region of the adhesive 50d may have an uncoated portion.

The application of the above-mentioned planar adhesive 50d is carried out by applying an adhesive 50d after being brought into contact with the surface sheet 50 by a coater.

As a result, even if the surface sheet 50 is provided with the opening 50c, and the opening 50c is coated with the adhesive 50d, the adhesive 50d does not bury the opening 50c.

As described above, since the adhesive 50d can be prevented from being buried in the opening 50c of the surface sheet 50, the gas permeability of the surface sheet 50 provided with the opening 50c can be realized by the wearer. Around the navel.

Further, the disposable disposable diaper 10 of the present embodiment may be configured to apply embossing to the exterior sheet 60.

Here, the embossing ratio of the exterior sheet 60 may be 5% to 15%. The embossing ratio refers to the ratio of the area where the embossing is formed. example For example, it refers to the area of the outer sheet on which the embossed portion is formed, with respect to the entire area of the outer sheet.

According to the above configuration, the portion where the embossing is not applied can easily become high in air permeability and hardly harden. When the pitch of the embossing is made wider, the degree of freedom of the fibers constituting the sheet can be increased, and the fibers can be easily staggered.

According to the disposable disposable diaper 10 of the present embodiment, the back sheet 60a is not disposed at a position contacting the navel portion of the baby, and the fibers in the top sheet 50 and the outer sheet 60 are compressed to reduce The volume of the surface sheet 50 and the fibers in the outer sheet 60 are joined in a state in which the fibers in the outer sheet 60 are undissolved, and it is possible to prevent the baby's navel portion from being uncomfortable or painful as much as possible.

Further, according to the disposable disposable diaper 10 of the present embodiment, by providing the convex portion 50a, the concave portion 50b, and the opening 50c in the surface sheet 50, it is possible to not only cause discomfort or pain to the navel portion of the baby. Minimizing it also ensures that the baby's navel is sufficiently breathable and that the baby's navel is kept dry.

The present invention has been described in detail above with reference to the embodiments thereof. It is to be understood that the invention is not limited to the embodiments described in the specification. The invention can be modified and changed in a manner that does not depart from the spirit and scope of the invention as described in the appended claims. Therefore, the description of the specification is intended to be illustrative, and not to limit the invention.

For example, in the disposable disposable diaper, a leg gather portion formed by a stretchable nonwoven sheet may be provided instead of the leg gather portion formed by the rope-shaped elastic member.

In addition, the contents described in the specification of the present invention refer to the entire contents of Japanese Patent Application No. 2012-104150 (filed on Apr. 27, 2012).

[Industry Utilization]

Provided is a disposable disposable diaper capable of protecting the navel portion of the baby even when the baby's back side is bent to have a rounded posture.

10‧‧‧Disposable disposable diapers

20‧‧‧ Front waist area

25‧‧‧胯下区域区

30‧‧‧After waist area

35‧‧‧ leg opening

40‧‧‧ absorber

60a‧‧‧back sheet

70‧‧‧Flanking

75‧‧‧ Leg flexion

80‧‧‧ leg side pleats

81‧‧‧ joint part

82‧‧‧Free end section

83‧‧‧Flexible components

90‧‧‧ buckle

90a‧‧‧Buckle belt

200a‧‧‧ Pants Department

500‧‧‧ gap

E1‧‧‧ end

F-F‧‧‧Abandoned disposable diapers

G-G‧‧‧After-use disposable diaper

O1‧‧‧Disposable disposable diaper center

Center of O2‧‧‧ Pants Retraction Department

L‧‧‧Product length direction

W‧‧‧Product width direction

Claims (8)

A disposable disposable diaper having a front waistline region, a rear waistline region, and a crotch region between the front waistline region and the rear waistline region, and a pair of leg circumference openings are formed, and includes: An absorbent body that extends across the crotch region and extends toward the front waistline region and the rear waistline region, and has a product longitudinal direction from the front waistline region toward the back waistline region and is orthogonal to the product length direction In the product width direction, in the front waistline region, in the vicinity of the center in the product width direction and including the end portion in the longitudinal direction of the product, a notch portion is formed in a region where only at least two or more non-woven sheets are disposed. The end portion in the longitudinal direction of the product in the front waist region is configured to compress the fibers in the nonwoven fabric sheet to reduce the volume thereof, and the fibers in the nonwoven fabric sheet are not dissolved and interlaced. Engage. The disposable disposable diaper according to the first aspect of the invention, wherein the surface layer sheet included in the nonwoven fabric sheet is provided with irregularities and openings. The disposable disposable diaper according to the second aspect of the invention, wherein the non-woven fabric sheets are joined to each other by a linear coating agent, and the applied adhesives are in the width direction of the product. Room The partition is configured to become larger than the interval of the opening in the width direction of the product. The disposable diaper according to claim 2, wherein the unevenness is configured to continuously extend in the longitudinal direction of the product. The disposable diaper according to claim 1 or 2, wherein the notch portion has a convex shape toward the center in the width direction of the product, and is discarded after use. When the flat diaper of the diaper is viewed, the curve of the notch of the notch portion is formed into a meandering shape. The disposable diaper of the disposable diaper according to the first or the second aspect of the invention, wherein the embossing ratio of the outer sheet which is not in contact with the skin surface side as the nonwoven fabric sheet is 5 %~15%. A disposable disposable diaper according to the first or second aspect of the invention, wherein the number of sheets disposed is configured to be along the length direction of the article from the front waistline region. In the portion, the center of the product in the longitudinal direction of the disposable disposable diaper is sequentially increased. The disposable diaper according to claim 1 or 2, wherein the crotch region includes a crotch expansion-contraction portion formed in an absorbent body arrangement region in which the absorbent body is disposed, and is stretchable Further, the center of the crotch expansion-contraction portion in the longitudinal direction of the product is disposed on the side of the front waistline region from the center of the disposable disposable diaper in the longitudinal direction of the product.