JP2003088555A - Shorts-type paper diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shorts-type paper diaper hardly causing a leak. SOLUTION: Sublumber stretch members 21F and 21B of 800 dtex or more thick are fixed to a sublumber part U corresponding to the lower abdomen and hip in a 200-350%-stretched state along the circumferential direction, so that the lower abdomen and hip are strongly constricted to enhance the fittability of an absorber 10. The thickness of the stretch members 50 of raised cuffs C and C on both sides of the absorber is set to 1000 dtex or more, and the members are fixed to a raised sheet 40 in a 150-350%-stretched state, so that the constriction of the raised cuffs C and C to the leg circumferences is reinforced to enhance the fittability of the absorber 10. The absorption quantity under pressure of the absorber 10 is further set to 1300 cc or more to far outweigh the reduction in absorptive force by the reinforcement of constriction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pant-type disposable diaper suitable for use at night.

[0002]

2. Description of the Related Art Conventionally, as a paper diaper, a pants-type paper diaper having both abdominal side edges and dorsal side edges joined and fixed in advance, and both abdominal left and right edges when the diaper is used (when worn) A so-called tape-type disposable diaper has been developed, which is a type in which the left and right edges on the back side are joined.

The pants-type paper diaper has a shape similar to that of underwear pants, and is suitable for daytime wear because it is easy to wear and has little volume when worn. Since the tightening of the can be adjusted, it has a strong advantage of leakage, and is suitable for wearing at night, especially at bedtime. According to a study conducted by the present inventors on home caregivers, a pants-type paper diaper is used in the daytime,
At night, people who use tape-type diapers have almost no problems such as leakage.

[0004]

On the other hand, on the other hand, many people use pants-type disposable diapers for a long time at night due to the bad feeling of wearing the tape type, and those people are very apt to leak at night. It turns out that I have a lot of experience.

Therefore, a main object of the present invention is to provide a pants-type disposable diaper which is less likely to leak and can be used safely by a person who has a large amount of urine discharged at night.

[0006]

<Means for Solving the Problems><Invention of Claim 1>
An absorber composed of a top sheet, a back sheet, and an absorbent core arranged between these sheets, standing cuffs standing on both sides of the absorber due to the contracting action of the elastic member, a waist opening, and a pair of left and right legs. It has an opening, a waist elastic member fixed to the waist end along the circumferential direction under extension, and a lower waist elastic member fixed to the waist end below the waist along the circumferential direction under extension. In a pants-type paper diaper; the elastic member of the standing cuff is
Thickness is 1000 dtex or more and 150 to 300
% In a stretched state, the lower waist elastic member has a thickness of 800 dtex or more and is fixed in a stretched state of 200 to 350%, and the absorbent body absorbs under a pressure by an absorption test under a pressure. The pants-type disposable diaper is characterized by having a size of 1300 cc or more.

(Advantageous effects) When coping with nighttime leakage in a pants-type disposable diaper, it is usually conceived that the absorbent pulp or the superabsorbent polymer (hereinafter, also simply referred to as SAP) is increased in amount to increase the absorption amount. Alternatively, the elastic member such as the waist should be tightly tightened.

However, simply increasing the amount of absorption or tightening the elastic member does not solve the fundamental problem. That is, if the amount of pulp or SAP is increased too much, the deformability of the absorbent body is deteriorated, the fit property is deteriorated, and conversely leakage is likely to occur. Also, even if the elastic member is tightened tightly, the absorption amount of the absorber will decrease,
There is a limit because the diaper does not fit well.

On the other hand, according to the present invention, the lower waist corresponding to the lower abdomen and buttocks has a thickness of 800.
The lower waist elastic member with dtex or more is fixed along the circumferential direction in a stretched state of 200 to 350%, the lower abdomen or buttocks are strongly tightened to enhance the fit of the absorbent body, and the standing cuffs on both sides of the absorbent body. The thickness of the elastic member (generally called three-dimensional gather) is 1000 dt.
It should be ex or more and fixed in a stretched state of 150 to 300% to strengthen the tightness of the standing cuffs around the legs and enhance the fit of the absorber, and further, the absorption amount under pressure of the absorber is 1300 cc or more. In order to compensate for the decrease in the absorption force due to the increased tightening, there is a surplus. Thus, it is a pants-type diaper that is extremely hard to leak, even for people who have a large amount of urination at night and those who move actively.

<Invention of Claim 2> The pants-type disposable diaper according to claim 1, which is an adult pants-type disposable diaper.

(Operation and effect) The contracting force of the elastic member according to claim 1 is too tight for children. Therefore, the present invention is particularly suitable for adults.

<Invention of Claim 3> The pants-type disposable diaper according to claim 1 or 2, which is configured so that the absorption rate in an absorption rate test is 25 seconds or less.

(Effects) For example, if an attempt is made to increase the amount of absorption simply by increasing the amount of SAP, a so-called gel blocking phenomenon (polymer particles expanded due to absorption of body fluid, other body fluid not absorbed or body fluid absorbed into the body fluid) The absorption rate is hindered by the inhibition of the diffusion of), and the amount of absorption should be large, but leakage tends to occur.

Therefore, by configuring the absorption rate to be 25 seconds or less as in the third aspect of the present invention, the leakage prevention effect is further enhanced.

<Invention of Claim 4> The first, second, and third liquid flows in the inclined surface liquid flow test are each configured to have a liquid flow of 100 mm or less.
The pants-type paper diaper according to any one of 3 above.

(Operation and effect) In the worn-on diaper, the surface of the absorbent body is inclined, and urine excreted there flows downward to some extent, which may cause leakage. By configuring the liquid flow of the first, second and third times to be 100 mm or less as described in claim 4, leakage is further unlikely to occur (especially when worn for a long time).

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below mainly with reference to FIG. 1 for explaining terms relating to parts and directions of the present invention, and also with detailed structural examples with reference to FIGS. (Basic Structure) The pants-type disposable diaper according to the first embodiment includes a liquid-impervious outer sheet 1 and a liquid-impervious outer sheet 1, as can be easily understood from a comparison between FIGS. 1, 2 and 3. It is mainly configured by an absorber 10 which is fixed to the inner surface of the exterior sheet 1 and extends in the longitudinal direction (front-rear direction) around the crotch 4.

The exterior sheet 1 is formed by laminating and fixing two (or three or more) breathable / water-repellent nonwoven fabrics, and the standing cuffs C, C and the absorbent body 10 are stacked on the exterior sheet 1. At the final stage of the manufacturing process after attaching together,
By joining the entire longitudinal direction of both side edges of the front body F and the back body B by means such as ultrasonic sealing or heat melting (this joint is designated by reference numeral 30), the waist opening is opened as shown in FIG. Part WO and a pair of left and right leg openings L
It becomes a paper diaper with O formed.

In the reference numerals of FIG. 1, the "vertical direction" means a direction connecting the ventral side and the dorsal side, and the "circumferential direction" means a direction orthogonal to the vertical direction. The “waist opening edge” means the edge 5 of the waist opening WO, and the “leg opening edge” means the edge 6 of the leg opening LO. The "leg opening start end" means the leg opening edge 6 of the leg opening LO.
Means a position intersecting with the joint portion 30, and the leg opening edge 6
It means the beginning point of. The “trunk portion” T means the entire region of the length range from the waist opening edge 5 to the leg opening start end. The waist part T can be conceptually divided into a "waist end" W and a "lower waist" U. The length in the vertical direction depends on the size of the product, but the waist end W is 15 to 50 mm and the lower waist U is 45 to 20 mm.
It is 0 mm. The “crotch portion” L means the entire region of the length range forming the leg opening LO. Further, the "central portion" means an intermediate region excluding the side portion including the center line of the product. The “side portion” means both side portions of the waistline portion T.

As shown in FIGS. 2 and 3, the absorbent body 10 is made of a non-woven fabric or the like, and has a rectangular liquid-permeable top sheet 11 that is in direct contact with the wearer's skin, and a rectangular non-permeable top sheet 11 made of polyethylene plastic film or the like. It is mainly composed of a liquid-permeable back sheet 12 and a rectangular (semi-rigid) rectangular absorption core 13 arranged between these sheets and having a certain degree of rigidity. The absorbent core is mainly composed of cotton-like pulp, and optionally contains SAP.

In particular, in this embodiment, the absorbent core 13 has a two-layer structure composed of a lower layer and an upper layer having a width narrower than that of the lower layer, and the whole of the absorbent core 13 is frame-wound so as to be wrapped with a rectangular crepe paper 14, and then the top sheet 11 is formed. And between the backsheets 12. The top sheet 11 is the absorber 1
It reaches the back surface around both side edges of 0, is overlapped on the liquid impermeable back sheet 12, and is bonded and integrated by a hot melt adhesive at the overlapping portion. Further, in this example, the liquid-permeable second sheet 11S is interposed between the liquid-permeable top sheet 11 and the crepe paper 14. In the illustrated example, a hot-melt adhesive is spirally applied on the crepe paper 14, and the second sheet 14S is adhesively fixed on the hot-melt adhesive. In this example, almost the entire back surface of the absorber 10 is bonded onto the back sheet 1 with a hot melt adhesive.

Especially, in the present invention, such an absorber 10 is used.
However, the absorption amount under pressure by the absorption test under pressure is 1300 cc
Above, especially preferably, it is configured to be 1400 to 1700 cc. More desirably, the absorption rate in the absorption rate test is 25 seconds or less, and particularly preferably 15 seconds or less. More desirably, the first, second, and third liquid flows in the inclined surface liquid flow test are each configured to be 100 mm or less, and particularly preferably 80 mm or less.

Therefore, in the present invention, for example, the amount of pulp of the absorbent core is 34.0 g or more, particularly preferably 35.0 to 4
The amount of SAP can be 25.0 g or more, and particularly preferably 27.0 g to 39.0 g. In addition, it is also preferable to use an air-through nonwoven fabric as the top sheet 11 and the second sheet.

In particular, the basis weight of the top sheet 11 is 1
5 to 30 g / m ² , and the weight of the second sheet is 20
And to 60 g / m ^2, the compression energy WC 15 to 40 by compression test described below, and the compression recovery property RC constitute the absorbent body 10 so that 35 or more, since the absorption rate and surface liquid flow becomes excellent preferable.

(Standing cuffs) On both sides of the absorber 10,
Leg upright cuffs C, C projecting to the use surface side are respectively formed, and the upright cuffs C are a standing sheet 40 that is substantially continuous in the width direction and a stretchable member, for example, one of rubber thread or illustrated. A plurality of elastic members 50,
50 ... And.

As shown in more detail in FIG. 2, the standing cuff C is formed by forming the standing sheet 40 into three layers and enclosing the elastic members 50, 50 ... In a state of being fixed by a hot melt adhesive or the like. It is a thing. The standing sheet 40 forming each of the standing cuffs C, C is preferably liquid-impermeable or hydrophobic, not liquid-permeable. Therefore, in this example, the upright sheet 40 is tripled and the inner sheet is another sheet excellent in liquid impermeability (film, nonwoven fabric, etc.).
Is installed to enhance leakproofness. Alternatively, a liquid-permeable sheet such as a non-woven fabric may be made to have a property of repelling liquid by silicon treatment or the like. further,
It is desirable to have ventilation or vapor permeability.

The inner surface of the triple standing sheet 40 is the absorber 1.
No. 0 liquid-impermeable back sheet 12 is wrapped around the back surface side and fixed to the outer sheet with a hot melt adhesive or the like. As a result, this fixing start end of the triple standing sheet 40 forms the standing end of the standing cuffs C. The tip side from the standing end is a free portion that is not fixed to the product body. At the front and rear ends of the upright sheet 40 in the vertical direction, the tip of the free portion is fixed to the article, specifically, to the outer surface of the top sheet 11 with a hot melt adhesive or the like in a state where the tip of the free portion faces the widthwise center side of the article.

The basic form of the elastic members 50, 50 ... Is at least one (two in the illustrated example) in the free portion, but especially the elastic member 50 is in the tip of the free portion. It is preferable that the elastic member 50 is also provided on the root side as in the illustrated example. It is more desirable to have a plurality of tips as shown in the figure.

In particular, in the present invention, the elastic members 50, 50 ... Of the standing cuffs C, C have a thickness of 1000d.
tex or more, particularly preferably 1000 to 2000 dtex
Used is 150 to 300%, particularly preferably 2
It is fixed to the upright sheet 40 in a stretched state of 00 to 250%. As a concrete elastic member, thread rubber is preferably used.

FIG. 1 shows a state in which the paper diaper is expanded in the longitudinal direction. At the time of wearing, the paper diaper is attached to the body in a boat shape, and the contracting force of each elastic member 50, 50 ... , The standing cuffs C stand around the legs due to the contracting force of the elastic members 50, 50 ... Then, at this time, the side portion of the absorbent body 10 is deformed and lifted to form a deep pocket space.

The space surrounded by the left and right standing cuffs C, C forms a confining space for urine or loose feces. When urine is discharged into this space, the urine passes through the liquid-permeable top sheet 11 and is absorbed in the absorbent body 10, and the solid cuffs of loose stools are prevented by the standing cuffs C as a barrier. .

(Elastic members other than the standing cuffs) On the other hand, between the nonwoven fabrics of the exterior sheet 1 in the lower waist U, which is a region between the waist end W and the crotch L of the front body F and the back body B,
The lower waist elastic members 21F and 21B of the present invention are arranged and fixed in a stretched state along the circumferential direction. In the present invention, the lower waist elastic members 21F and 21B have a thickness of 800d.
tex or more, particularly preferably 900 to 1000 dtex is used, and 200 to 350%, particularly preferably 27.
It is fixed in a stretched state of 0 to 290%. As a concrete elastic member, thread rubber or the like can be preferably used.

These lower waist elastic members 21F and 21B are
The vertical distance is 15 mm or less, and each is 5 in parallel.
It is preferable that about 40 pieces are provided. Lower waist elastic member 21
The mutual distance between F and 21B is determined by the waist elastic member 20.
It is desirable that the distance between F and 20B is the same or wider.

In this example, in order to improve the fit around the waist, as shown in FIG.
Between the nonwoven fabrics of the exterior sheet 1 in, the waist opening W
Waist elastic members 20F and 20B made of thin thread rubber are arranged and fixed under extension at intervals in parallel with the edge of O. The interval and the number of the waist elastic members 20F and 20B can be appropriately determined, but for example, the interval is preferably about 4 to 8 mm, and the number is preferably about 4 to 20. As long as the waist elastic members 20F, 20B and the lower waist elastic members 21F, 21B are provided at the waist end W and the lower waist U, the fixing positions are not limited to between the nonwoven fabrics of the exterior sheet 1.

On the other hand, in this example, the exterior sheet 1 is folded back toward the inner surface of the product at the waist end W corresponding to the longitudinal ends of the front body F and the back body B. A holding sheet 9 extending from the back surface to the front and rear ends of the top sheet 11 is bonded by hot melt bonding or the like.

In the diaper thus formed, as will be apparent from the examples described below, 200 to 200 lower waist elastic members 21F and 21B having a thickness of 800 dtex or more are provided in the lower waist U corresponding to the lower abdomen and buttocks. It is fixed along the circumferential direction in a stretched state of 350%, the lower abdomen and the buttocks are strongly tightened to enhance the fit of the absorbent body 10, and the elastic members 50, 50 of the standing cuffs C, C on both sides of the absorbent body are fixed.
The thickness of ... is 1000 dtex or more and the standing sheet 4
0 to 150% to 300% of the stretched cuffs to tighten the standing cuffs C and C around the legs and improve the fit of the absorbent body 10, and then absorb the absorbent body 10 under pressure. Since the amount is set to 1300 cc or more to compensate for the decrease in absorption due to the increased tightening, it becomes very difficult for people with a large amount of urination at night and those with vigorous movement at night.

(Others: Arrangement Form of Elastic Member) (B) In the present invention, it is essential to provide the lower waist elastic members 21F and 21B, but the specific arrangement is not particularly limited. , Can be changed as appropriate. When the arrangement form of FIG. 1 is summarized, (A) to (F) of FIG.
As shown in. As can be inferred by comparing these, the lower waist elastic members 21F, 21B are arranged and fixed continuously in the circumferential direction across the absorbent body 10, and in the absorbent body 1.
It is possible to selectively adopt a form in which the product does not exist in the central part where 0 is located and is arranged and fixed only on the left and right side parts of the product.

Further, in the present invention, the waist elastic member 20.
Whether or not to provide F, 20B can be appropriately selected. When the waist elastic members 20F, 20B are provided, the waist elastic members 21F, 21B are arranged continuously in the circumferential direction across the absorbent body 10, similarly to the lower waist elastic members 21F, 21B. It is possible to selectively adopt a form of fixing and a form of not being located in the central portion where the absorbent body 10 is located and being arranged and fixed only on the left and right side portions of the product. Therefore, as shown in FIG. 5E, the waist elastic member 2
0F, 20B, and lower waist elastic members 21F, 21B
It is also possible to adopt a form in which the absorbent body AB is not present in the central portion, and is disposed and fixed only on the left and right side portions of the product, and the crotch portion elastic member 23 is not provided. Further, as shown in FIGS. 5B and 5C, the stretchable member 23 may be arranged in the crotch portion L along the circumferential direction and under extension.

Also, the lower waist elastic member 21F or 21B.
May be arranged in a lattice mesh. An example of this is the form shown in FIG. Even in this type of configuration, at least the elastic stretchable member along the circumferential direction is configured to have the above-described thickness and stretched state.

Further, the front body F and the back body B may be provided with different elastic members. Therefore, as shown as another embodiment in (F) of FIG.
In the front body F, the waist elastic member 20F and the lower waist elastic member 21F do not exist in the central portion where the absorbent body AB is located, and are arranged and fixed only on the left and right side portions of the product,
In addition, the crotch elastic member 23 is provided, and the waist elastic member 20B and the lower waist elastic member 21B are continuously arranged and fixed in the circumferential direction across the absorber 10 in the rear body, and the crotch elastic member is not provided. Can also be adopted.

It is additionally noted that the form of arrangement of the elastic member is appropriate as described above. In the case where the lower waist elastic members 21F, 21B or the crotch elastic member 23 does not exist in the central portion where the absorber AB is located and is fixedly arranged only on the left and right side portions of the product, the lower waist elastic member 21F. , 21B end,
Alternatively, both the case where the end of the crotch elastic member 23 overlaps the side edge of the absorber AB and the case where the crotch stretchable member 23 is separated without reaching the side edge of the absorber AB are included.

(B) Further, an elastic member as shown in FIG. 6 can be additionally provided to the paper diaper of the present invention. FIG. 6 (A) shows that the crotch elastic members 24, 24 are respectively provided between the non-woven fabrics of the outer sheet 1 from the end portion of the front side portion to the end portion of the rear side portion substantially parallel to the leg opening edge of the crotch portion L. It is fixed to. In this form, the crotch elastic member 24 contracts the leg opening LO to prevent body fluid from leaking.

In FIG. 6B, in the front body F and the back body B, the crotch and the crotch are respectively extended from the end of the left side part to the end of the right side part so as to cross the crotch part. The crotch elastic members 25F and 25B are fixed between the nonwoven fabrics of the outer sheet 1. Further, in this example, the crotch and crotch elastic members 25F and 25B on the front body F side and the back body B side partially intersect each other.

In FIG. 6C, in the front body F and the back body B, the crotch and crotch are respectively formed from the end of the left side part to the end of the right side part so as to cross the crotch part. The crotch elastic members 26F and 26B are fixed between the nonwoven fabrics of the outer sheet 1. In this example, the crotch / lower crotch elastic members 26F and 26B do not intersect but are parallel to each other at the crotch portion.

[0045]

EXAMPLE As shown in Table 1, three types of adult pants-type paper diapers provided with the absorbent body according to the present invention were manufactured, and Example 1 was prepared.
~ 3. Example 2 has an absorption core size of 600 mm × 1.
The same procedure was performed as in Example 1 except that the length was 90 mm. Example 3
Was the same as the example except that the amount of pulp and the amount of polymer were each 38.0 g. In addition, three types of commercially available pants-type disposable diapers for adults (all manufactured by different manufacturers) were prepared and used as conventional examples 1 to 3. And these Examples 1-3
And, regarding Conventional Examples 1 to 3, the following absorption test under pressure, absorption rate test, inclined surface liquid flow test and compression test were performed, respectively. The results of these tests are also shown in Table 1.

(Absorption test under pressure) The absorption test under pressure referred to in the present invention is as follows. That is, the product weight is measured and it is confirmed that the weight conforms to the standard. Cut the standing cuffs to prevent the absorber from shrinking. Sandwich the diaper with acrylic plates so that it is as flat as possible. A weight is placed, and with a load of 20 g / cm ² being applied, it is immersed in artificial urine for 30 minutes. After 30 minutes, the diaper is taken out from the artificial urine and the total weight is measured without draining. Subtract the product weight from the measured total weight to obtain the amount absorbed under pressure.

(Absorption Rate Test) The absorption rate test referred to in the present invention is as follows, and its outline is shown in FIG. That is, a mark (urine receiving part) is provided on the rear side 110 mm of the absorber. The diaper 300 is attached as flat as possible on the horizontal plane PL, and the four corners are fixed with duct tape. Stand the absorption cylinder 400 of a predetermined shape and size at the mark position,
150 ml of artificial urine is injected into the absorption cylinder 400 once to be absorbed by the absorber. Measure the time required to fully absorb the artificial urine.
The measurement is performed 3 times and the average value is taken as the absorption rate.

(Inclined surface liquid flow test) The inclined surface liquid flow test referred to in the present invention is as follows, and its outline is shown in FIG. That is, the diaper 300 with the ventral side up
Stick it flat on 01. A mark 302 (urine receiving part) is attached to the central part of the absorber. 1 from the position of 10 mm height using the dropping container 303
200 cc of artificial urine is dropped at a dropping rate of 5 cc / sec.
inject. Repeat 3 times at 10 minute intervals. The liquid flow distance at this time is measured.

(Compression Test) In this test, KES-G5 handy compression tester 400 manufactured by Kato Tech Co., Ltd. shown in FIG.
To use. In this tester 400, the measurement site of the sample is placed on the pressure receiving plate 402 (area 2 cm ² ) on the sample table 401, and the pressure plate 403 (area 2 cm ² ) is lowered from above to gradually pressurize the sample. Then, when the set maximum load is reached, the pressure plate 403 is raised to gradually weaken the pressure and restore the sample. In this process, the pressure applied to the sample and the pressure plate 40 are increased.
3 is measured, and "compression hardness LC", "compression energy WC", and "compression recovery RC" are calculated and displayed based on these measurement results.

Here, "compression hardness LC", "compression energy WC" and "compression recovery R" obtained by this tester
“C” is obtained by the following equation when the compression curve (vertical axis: pressurizing pressure, horizontal axis: stroke amount) shown in FIG. 10 is measured. WC = Area a + Area b LC = (Area a + Area b) / Area RC of triangle ABC = Area b / (Area a + Area b) Here, point A means the maximum load point, and point B has a load of 0.
It means a measurement starting point of 5 gf / cm ² , and point C means a point where the load at point A is zero.

The meanings of the values obtained as a result of this test are as follows. “Compression hardness LC”: The closer the value is to 1, the harder it is to compress. “Compression energy WC” ... The larger the value, the easier the compression. “Compression recovery property RC” ... The closer the value is to 100, the higher the recovery property.

In particular, in the compression test according to the present invention, the handy compression tester 400 is used, the descending speed of the pressure plate is set to 0.1 cm / sec, and the maximum load is 100 g / cm ² . The test is set so that the stroke is 20 mm.

In addition, in the compression test of the present invention, although not shown, the inner surface side of the diaper is faced up and is flatly attached on the sample table 401 so that the absorption core portion is located on the pressure receiving plate 402. The same sample is measured three times, and the average value is used as the evaluation value.

[0054]

[Table 1]

Next, these Examples 1 to 3 and Conventional Example 1
Twenty home caregivers used the paper diapers of Nos. 3 to 3 at night, and evaluated the leakage prevention effect. The evaluation results are shown in Table 2.

[0056]

[Table 2]

As a result, the paper diapers of Examples 1 to 3 according to the present invention did not leak even when used at night, but the paper diapers of Conventional Examples 1 to 3 frequently leaked when used at night.

[0058]

As described above, according to the present invention, a pants-type disposable diaper that is less likely to leak and can be used safely by a person who has a large amount of urine discharged at night.

[Brief description of drawings]

FIG. 1 is a plan view from a use surface side showing a developed state of a pants-type disposable diaper according to the present invention.

FIG. 2 is a longitudinal sectional view taken along the circumferential direction of the pants-type disposable diaper according to the present invention.

FIG. 3 is a longitudinal sectional view taken along the longitudinal direction of the pants-type paper diaper according to the present invention.

FIG. 4 is a perspective view of a pants-type paper diaper according to the present invention.

FIG. 5 is a developed state plan view schematically showing another elastic member arrangement mode.

FIG. 6 is a developed state plan view schematically showing another elastic member arrangement mode.

FIG. 7 is a schematic diagram of an absorption rate test of the present invention.

FIG. 8 is a schematic diagram of an inclined surface liquid flow test of the present invention.

FIG. 9 is a schematic diagram of a compression test of the present invention.

FIG. 10 is a graph showing an example of measurement results of the compression test of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Exterior sheet, 10 ... Absorber, 11 ... Liquid-permeable topsheet, 12 ... Liquid-impermeable backsheet, 13 ... Absorption core,
14 crepe paper, 20F, 20B ... waist elastic member,
21F, 21B ... Lower waist elastic member, 40 ... Standing sheet, 50 ... Elastic member of standing cuff, C ... Standing cuff.

Continued front page    (72) Inventor Yukio Moro             Tochigi Prefecture Shioya-gun Kitsuregawa-cho Large character Washishuku character Kannosawa             4776-4 Elleair Papertech Shares             In the company (72) Inventor Satoshi Matsui             Tochigi Prefecture Shioya-gun Kitsuregawa-cho Large character Washishuku character Kannosawa             4776-4 Elleair Papertech Shares             In the company F term (reference) 3B029 BA18 BD09 BD10 BD12 BD13                 4C098 AA09 CC03 CC07 CC12 CD01                       CE05 DD01 DD03 DD05 DD06                       DD10 DD12 DD22

Claims (4)

[Claims] 1. An absorbent body comprising a top sheet, a back sheet, and an absorbent core arranged between these sheets, standing cuffs on both sides of the absorbent body which are erected by a contracting action of a stretchable member, and a waist opening. And a pair of left and right leg openings, a waist elastic member fixed to the waist end along the circumferential direction while extending downward, and a lower waist part fixed below the waist end along the circumferential direction to extend downward. A pants-type paper diaper having an elastic member; the elastic member of the standing cuff has a thickness of 10
It is fixed at a stretched state of more than 00 dtex and 150 to 300%, and the lower waist elastic member has a thickness of 800 d.
tex or more and fixed in a stretched state of 200 to 350%, the absorbent body has an absorption amount under pressure of 1 under a pressure absorption test.
A pants-type disposable diaper characterized by having a structure of 300 cc or more. 2. A pants-type paper diaper for adults, wherein
Pants-type paper diaper described. 3. The underpants type diaper according to claim 1 or 2, which is constructed so that an absorption rate in an absorption rate test is 25 seconds or less. 4. The underpants-type diaper according to claim 1, wherein the first, second and third liquid flows in the inclined surface liquid flow test are each configured to be 100 mm or less. .