CN221998207U - Underpants type paper diaper with improved fit - Google Patents

Abstract

The invention provides a pants-type diaper with improved fit, which comprises an absorption main body and an elastic waistline, wherein the positions of the front waistline and the rear waistline from a waist opening to leg surrounding openings are approximately divided into five areas, namely a waist area, an abdomen area and a abdomen area, the thickness, the interval and the number of the elastic telescopic parts of the waist areas of the front waistline and the rear waistline are approximately equal, the elastic telescopic parts of the waist areas, the abdomen areas and the abdomen areas of the front waistline and the rear waistline are respectively provided with elastic telescopic parts which eliminate elasticity in the middle of the transverse direction, and the transverse dimension of the elastic elimination in the middle of the transverse direction is different, and the elastic telescopic ranges of the two transverse sides are different.

Description

Underpants type paper diaper with improved fit

Technical Field

The present invention relates to a pants-type diaper, and more particularly, to a pants-type diaper having excellent fit and wearing comfort, and improved fit.

Background

Disposable pant diapers, such as infant diapers, adult diapers, menstrual pants for women, etc., are well known. The primary function of this type of disposable absorbent article is to absorb and contain bodily waste, and such articles are also used to prevent the bodily waste from soiling, wetting or otherwise contaminating clothing or other articles that come into contact with the wearer, such as bedding.

Pants-type diapers generally have a three-dimensional pant-type design with elasticity throughout the waist region. At present, most pull-off trousers are designed with an elastic waistline as an independent part, an elastic telescopic piece after glue spraying is compounded by two layers of non-woven fabrics is divided into a front waistline part and a rear waistline part, then the front waist part and the rear waist part are separated by a distance, and then an absorber is connected.

Pant diaper wearable articles are those that are worn by extending the legs of a wearer into the leg openings and pulling the pant diaper into position about the lower torso of the wearer. Pant-type absorbent articles have become popular for use with children who are able to walk and often are toilet training, and for wearers whose movements have become more active such that the application of adhesive-type absorbent articles tends to be more difficult.

Pants-type diapers use elastic elements which are fastened in an elastically contractible state in the waist opening and/or the leg openings. Typically, to ensure a fully elastic fit around the legs and waist such as found in durable undergarments, the leg openings and waist openings are at least partially surrounded by elasticized elements positioned along the periphery of the respective openings. Pant-type wearable articles having a main body for covering the crotch region of the wearer and separate elastic belts defining a waist opening and leg openings are known in the art. However, the waist elastic expansion pieces are distributed relatively densely, the abdomen elastic expansion pieces are distributed relatively sparsely, and the front elastic expansion pieces and the rear elastic expansion pieces are distributed basically symmetrically. The pants type paper diaper basically has the bellies on the body types of people, and the front elastic telescopic parts and the rear elastic telescopic parts are symmetrically distributed and do not accord with the body types of the people.

Therefore, there is a need for an improved waist region design that optimizes product design to improve product fit for the main target group of body types, thereby improving the wearing comfort and good fit of pant diapers.

Disclosure of Invention

The object of the present invention is to provide a disposable absorbent article having excellent fit and wearing comfort.

According to the pants-type diaper with improved fit provided by the invention, the pants-type diaper with improved fit comprises an absorption main body and an elastic waistline, the elastic waistline comprises a front waistline and a rear waistline, the transverse edges of the front waistline and the rear waistline are jointed to form a waist opening and two leg openings, the positions of the front waistline and the rear waistline from the waist opening to the leg openings are approximately divided into a waist region, a lower waist region, an upper abdomen region, an abdomen region and a lower abdomen region, the thickness, the spacing and the number of the elastic expansion and contraction pieces of the waist regions of the front waistline and the rear waistline are approximately equal, the elastic expansion and contraction pieces of the waist region, the upper abdomen region, the abdomen region and the lower abdomen region are eliminated from the middle in the transverse direction, the transverse dimension of the elastic expansion and contraction ranges of the two lateral sides of the front waistline are different, the elastic expansion and contraction ranges of the two lateral sides of the waist region are respectively approximately the same as the corresponding lateral expansion and contraction ranges of the two lateral sides of the corresponding regions of the rear waistline, and the elastic expansion and contraction regions of the waist region respectively the two lateral expansion and contraction ranges of the waist region are respectively different.

According to the pants-type diaper with improved fit, it is preferable that the stretch ratio of the elastic stretchable members in the waist region, the upper abdominal region, and the lower abdominal region of the front waistline is substantially the same as the stretch ratio of the elastic stretchable members in the corresponding regions of the rear waistline, and the stretch ratio of the elastic stretchable members in the lower waist region and the lower abdominal region of the front waistline is different from the stretch ratio of the elastic stretchable members in the corresponding regions of the rear waistline.

According to the pants-type diaper with improved fit provided by the invention, in a specific embodiment, the elastic expansion ranges of the lateral sides of the upper abdominal region and the lower abdominal region of the front waistline and the rear waistline are respectively 15% -30% of the lateral dimension of the front waistline and the rear waistline.

According to the pants-type diaper with improved fit provided by the invention, in a specific embodiment, the elastic expansion ranges of the lateral sides of the waist region of the front waistline and the abdomen region of the rear waistline are respectively 10% -20% of the lateral dimensions of the front waistline and the rear waistline, and the elastic expansion ranges of the lateral sides of the abdomen region of the front waistline and the waist region of the rear waistline are respectively 20% -40% of the lateral dimensions of the waistline. Alternatively, the elastic expansion ranges of the two lateral sides of the waist lower region of the front waistline are less than or equal to 0.5 times of the elastic expansion ranges of the two lateral sides of the waist lower region of the rear waistline; the elastic expansion and contraction ranges of the two lateral sides of the waist region of the front waistline are more than or equal to 2 times of the elastic expansion and contraction ranges of the two lateral sides of the abdomen region of the rear waistline. Alternatively, the elastic expansion and contraction members of the waist region, the upper abdominal region, and the lower abdominal region of the front waistline are respectively substantially the same as the stretch ratio of the elastic expansion and contraction members of the corresponding regions of the back waistline, the elastic expansion and contraction members of the lower waist region of the front waistline are smaller than the elastic expansion and contraction members of the lower waist region of the back waistline, and the elastic expansion and contraction members of the abdomen region of the front waistline are larger than the elastic expansion and contraction members of the abdomen region of the back waistline.

According to the underpants type paper diaper with improved fit, the front waistline region and the back waistline region are designed to be divided into the stretching ratio and the gluing length, and stress with different lengths is formed through point breaking. According to different stress requirements of each region of the front and rear waist of a human body, the stress empty section is designed according to the characteristics that the requirements of the belly part are relatively loose, the requirements of the rear waist part are relatively tight and the requirements of the hip circumference part are relatively loose, and the rubber feeling is avoided; the side waist S-shaped effect is formed through the arrangement of rubber roots in each area, the sizing length and the design of the stretching ratio. The fit of the product, comfort during wear, sagging prevention, and leakage prevention can be better improved.

According to the pants-type diaper with improved fit, in a specific embodiment, the elastic expansion ranges of the lateral sides of the waist lower region of the front waistline and the abdomen region of the rear waistline are respectively 20% -40% of the lateral dimensions of the front waistline and the rear waistline, and the elastic expansion ranges of the lateral sides of the abdomen region of the front waistline and the waist lower region of the rear waistline are respectively 10% -20% of the lateral dimensions of the front waistline and the rear waistline. Alternatively, the elastic expansion ranges of the two lateral sides of the waist lower region of the front waistline are larger than or equal to 2 times of the elastic expansion ranges of the two lateral sides of the waist lower region of the rear waistline; the elastic expansion and contraction ranges of the two lateral sides of the waist region of the front waistline are less than or equal to 0.5 times of the elastic expansion and contraction ranges of the two lateral sides of the waist region of the back waistline. Alternatively, the elastic expansion and contraction members of the waist region, the upper abdominal region, and the lower abdominal region of the front waistline are respectively substantially the same as the stretch ratio of the elastic expansion and contraction members of the corresponding regions of the back waistline, the elastic expansion and contraction members of the lower waist region of the front waistline are larger than the elastic expansion and contraction members of the lower waist region of the back waistline, and the elastic expansion and contraction members of the abdomen region of the front waistline are smaller than the elastic expansion and contraction members of the abdomen region of the back waistline.

According to the underpants type paper diaper with improved fit, the front waistline region and the back waistline region are designed to be divided into the stretching ratio and the transverse elastic stretching range, and stress with different lengths is formed by eliminating elasticity. The side waist S-shaped effect is formed through the arrangement of rubber roots in each area, the sizing length and the design of the stretching ratio. The fit of the product, comfort during wear, sagging prevention, and leakage prevention can be better improved.

Drawings

Fig. 1 is a perspective view of one embodiment of a pant diaper having improved fit according to the present invention;

Fig. 2 is a schematic unfolding view of a pants-type diaper with improved fit according to the present invention;

FIG. 3 is a schematic cross-sectional view of FIG. 2; fig. 4 is a schematic view showing the extension ranges of the front waist elastic member and the rear waist elastic member of the pants-type diaper with improved fit;

Fig. 5 is a schematic view showing the extension ranges of the front and rear waist elastic members of a pants-type diaper according to another embodiment of the present invention.

In the figure, 1 is a pants-type diaper, 2 is an absorbent main body, 21 is a liquid-permeable top sheet, 22 is an absorbent core, 23 is a liquid-impermeable back sheet, 24 is a leak-proof barrier, 3 is an elastic waist, 3A is a front waist region, 3B is a rear waist region, C is a crotch region, 3D is a side joint, 7 is a waist opening, 8 is a leg-in-leg-opening, 9 is an arc-shaped leg-surrounding, 31 is a waist region, 32 is a lower waist region, 33 is an upper abdomen region, 34 is a lower abdomen region, 35 is a lower abdomen region, 31A is a waist region, 32A is a lower waist region, 33A is a front waist region, 34A is a lower abdomen region, 35A is a lower abdomen region, 31B is a waist region, 32B is a lower waist region, 33B is a waist region, 34B is a lower abdomen region, 35B is a lower waist region, 35B is a lower abdomen region, 4 is an elastic telescoping member, 41A lower waist region, 42A is an elastic member of the front waist region, 42A lower waist region is a lower waist region, 43 is a telescoping member, and 48 is a lower waist region, 45 is a lower waist region, and 48 is a lower waist region.

Description of the embodiments

The invention is further described below by means of specific embodiments. The invention provides a panty-shape diaper with improved fit, which is usually required to be placed around the crotch of a wearer during use. The term "longitudinal" as used herein refers to an imaginary direction of the diaper, which coincides with the length direction of the diaper, after the disposable absorbent article has been unfolded with the side seals removed; the transverse direction is orthogonal to the longitudinal direction, which coincides with the width direction or the waistline direction of the diaper. The disposable pants-type diaper 1 has a front waistline 3A, a crotch region C, and a back waistline 3B in its longitudinal direction, and in use, the front waistline is disposed toward the abdomen region of the user and downward toward the groin region while the crotch region is disposed substantially directly below the crotch of the user and the back waistline is disposed toward the buttocks of the user.

Example 1

As shown in fig. 1 to 4, a pants-type diaper 1 with improved fit according to the present invention comprises an absorption body 2 and an elastic waistline 3 comprising a front waistline 3A and a back waistline 3B, lateral edges of the front waistline 3A and the back waistline 3B being joined to form a waist opening 7 and two leg openings 8, the front and back waistlines being substantially divided into a waist region 31, a lower waist region 32, an upper abdomen region 33, an abdomen region 34, and a lower abdomen region 35 from the waist opening 7 to the leg openings 8.

The absorbent body of the pants-type diaper 1 has a liquid-permeable top sheet 21, an absorbent core 22, a liquid-impermeable back sheet 23, and leakage barriers 24 provided in the longitudinal direction. The liquid-permeable surface layer 21 is arranged in a direction towards the user of the pant diaper during use and the liquid-impermeable bottom layer 23 is arranged in a direction away from the user during use, i.e. underneath the pant diaper 1. The absorbent core 22 is disposed between the liquid-permeable top sheet 21 and the liquid-impermeable back sheet 23. The liquid-permeable surface layer 21 is preferably made of a soft nonwoven fabric material. The liquid-impermeable backsheet material 23 is made of a liquid-impermeable material in the form of a liquid-impermeable film, preferably a breathable film material that is breathable but liquid-impermeable. The absorbent core 22 may use synthetic and natural fibers, or a combination of fibers, and the absorbent core 22 may also be formed from layers of different materials, or may be composed of a single layer having good properties for absorbing, diffusing, and storing fluids within the body. In general, a material in which an absorbent polymer powder is mixed with fluff wood pulp is preferable in view of the absorption function and the price, as long as the absorbent core can absorb and retain a body fluid, and a toilet paper or a nonwoven fabric material may be used to wrap the absorbent core in order to retain the shape of the absorbent core. The leakproof isolation boundaries 24 are made of non-woven fabrics with good water pressure resistance, and the free edges of the leakproof isolation boundaries are provided with elastic expansion pieces along the longitudinal direction. The components may be joined together by suitable joining methods, such as by conventional methods known in the art of disposable absorbent articles, such as adhesive, thermal compression, ultrasonic welding, and the like.

The absorption body 2 has both ends joined to a front waistline 3A and a back waistline 3B, respectively. The region overlapping the absorbent core layer 22 in the absorbent main body 2 in the front and rear waistlines is preferably elastically removed or weakened by melting by heating or cutting the elastic member. An elastic member disposed laterally outside the overlapping region of the elastic waist region and the absorbent core layer is fixedly joined between the two nonwoven fabrics at one end thereof adjacent to the overlapping region.

As shown in fig. 3, the pant diaper of one embodiment has a waist elastic plan view in a flat, uncontracted state, showing the garment-facing surface. Fig. 3 is a schematic view showing the extension ranges of the front and rear waist elastic extension members of the pants-type diaper with improved fit. The pants-type diaper 1 has substantially the same thickness, spacing and number of elastic stretchable members in the waist region 31 of the front and rear waistlines 3A, 3B, and the elastic stretchable members in the waist region 32, the abdomen region 33, the abdomen region 34 and the abdomen region 35 of the front and rear waistlines are made to be inelastic in the middle in the lateral direction, and elastic stretchable members can be made to be inelastic in the middle in the lateral direction by a conventional process such as melting and cutting, and elastic stretchable members which have not been inelastic can be fixed at the lateral ends of the middle region by a hot melt adhesive. The transverse dimension of the transverse intermediate elasticity-eliminating region is different between the lower waist region 32, the upper abdomen region 33, the abdomen region 34, and the lower abdomen region 35 in the front waistline 3A and the back waistline 3B, and the elastic expansion ranges are different on both sides in the transverse direction. The elastically stretchable ranges on both lateral sides of the upper abdominal region 33A and the lower abdominal region 35A of the front waistline 3A are substantially the same as the elastically stretchable ranges on both lateral sides of the corresponding region of the rear waistline 3B, respectively, and the elastically stretchable ranges on both lateral sides of the lower waist region 32A and the abdominal region 34A of the front waistline 3A are different from the elastically stretchable ranges on both lateral sides of the corresponding region of the rear waistline 3B, respectively.

According to the pants-type diaper with improved fit provided by the present invention, the stretch ratio of the elastic stretchable members 41A, 43A, 45A in the waist region 31A, the upper abdominal region 33A, and the lower abdominal region 35A of the front waistline 3A is substantially the same as the stretch ratio of the elastic stretchable members 41B, 43B, 45B in the corresponding regions of the rear waistline 3B, respectively, and the stretch ratio of the elastic stretchable members 42A, 44A in the lower waist region 32A and the abdominal region 34A of the front waistline 3A is different from the stretch ratio of the elastic stretchable members 42B, 44B in the corresponding regions of the rear waistline 3B, respectively.

According to the pants-type diaper with improved fit, in the front waistline 3A region, the elastic expansion ranges of the two lateral sides of the upper abdominal region 33A and the lower abdominal region 34A are 15% -30% of the lateral dimension of the front waistline 3A; the elastic expansion and contraction range of the elastic expansion and contraction body 42A at the two lateral sides of the waist lower region 32A is 10-20% of the lateral dimension of the front waistline; the elastic expansion and contraction body 44A on both lateral sides of the abdomen area 34A is elastically expandable in a range of 20% -40% of the lateral dimension of the front waistline. In the rear waistline 3B region, the elastically stretchable ranges of the lateral sides of the upper abdominal region 33B and the lower abdominal region 34B are 15% -30% of the lateral dimension of the rear waistline 3B; the elastic expansion and contraction range of the elastic expansion and contraction body 44B at the two lateral sides of the abdomen area 34B is 10% -20% of the lateral dimension of the rear waistline; the elastic expansion and contraction body 42B on both lateral sides of the lower lumbar region 32B is elastically expandable and contractible in the range of 20% to 40% of the lateral dimension of the rear waistline.

In a specific embodiment, the elastic extension and contraction body 42A on both lateral sides of the waist lower region 32A of the front waist line 3A is elastically extensible and contractible in an extent of not more than 0.5 times the elastic extension and contraction body 42B on both lateral sides of the waist lower region 32B of the rear waist line 3B; the elastic extension and contraction ranges of the elastic extension and contraction bodies 44A on both lateral sides of the abdomen area 34A of the front waistline 3A and the elastic extension and contraction ranges of the elastic extension and contraction bodies 44B on both lateral sides of the abdomen area of the back waistline 34B are equal to or larger than 2 times.

In a specific embodiment, the stretch ratios of the elastic stretchable members 41A, 43A, 45A of the waist region 31A, the upper abdominal region 33A, and the lower abdominal region 35A of the front waistline 3A are substantially the same as the stretch ratios of the elastic stretchable members 41B, 43B, 45B of the respective regions of the rear waistline, respectively, the stretch ratio of the elastic stretchable member 42A of the lower waist region 32A of the front waistline 3A is smaller than the stretch ratio of the elastic stretchable member 42B of the lower waist region 32B of the rear waistline 3B, and the stretch ratio of the elastic stretchable member 44A of the abdominal region 34A of the front waistline 3A is larger than the stretch ratio of the elastic stretchable member 44B of the abdominal region 34B of the rear waistline 3B.

Through the pants-type diaper provided by the embodiment, the front waistline subregion and the back waistline subregion are used for carrying out subregion design on the stretching ratio and the transverse elastic stretching range, and stress with different lengths is formed by eliminating elasticity. The side waist S-shaped effect is formed through the arrangement of rubber roots in each area, the elastic expansion range and the design of the stretching ratio. The fit of the product, comfort during wear, sagging prevention, and leakage prevention can be better improved. When the pants-type diaper is used by a wearer, the wearer can well attach the waist region and the abdomen region of the wearer through the arrangement of rubber roots, the elastic expansion range and the stretching ratio of each region and the different stretching effect of the different region elastic expansion pieces.

Example 2

Fig. 5 is a schematic view showing the extension ranges of the front and rear waist elastic members of a pants-type diaper according to another embodiment of the present invention. In a pants-type diaper having improved fit, in a front waistline 3A region, the elastic expansion ranges of both lateral sides of an upper abdominal region 33A and a lower abdominal region 34A are 15% -30% of the lateral dimension of the front waistline 3A; the elastic expansion and contraction range of the elastic expansion and contraction body 44A on the lateral sides of the abdomen area 34A is 10% -20% of the lateral dimension of the front waistline; the elastic expansion and contraction body 42A on both lateral sides of the lower waist region 32A is elastically expandable and contractible in the range of 20% to 40% of the lateral dimension of the front waistline. In the region of the rear waistline 3B, the elastically stretchable ranges of the lateral sides of the upper abdominal region 33B and the lower abdominal region 34B are 15% -30% of the lateral dimension of the rear waistline 3B; the elastic expansion and contraction range of the elastic expansion and contraction body 42B at the two lateral sides of the waist lower region 32B is 10% -20% of the lateral dimension of the rear waistline; the elastic expansion and contraction body 44B on both lateral sides of the abdomen area 34B is elastically expandable and contractible in a range of 20% -40% of the lateral dimension of the rear waistline.

In a specific embodiment, the elastic extension and contraction body 42A on both lateral sides of the waist lower region 32A of the front waistline 3A is elastically extensible and contractible in an extent of not less than 2 times that of the elastic extension and contraction body 42B on both lateral sides of the waist lower region 32B of the back waistline 3B; the elastic extension and contraction ranges of the elastic extension and contraction bodies 44A on the lateral sides of the abdomen area 34A of the front waistline 34A are not more than 0.5 times the elastic extension and contraction ranges of the elastic extension and contraction bodies 44B on the lateral sides of the abdomen area 34B of the back waistline 3B.

In a specific embodiment, the stretch ratios of the elastic stretchable members 41A, 43A, 45A of the waist region 31A, the upper abdominal region 33A, and the lower abdominal region 35A of the front waistline 3A are substantially the same as the stretch ratios of the elastic stretchable members 41B, 43B, 45B of the respective regions of the rear waistline, respectively, and the stretch ratio of the elastic stretchable member 42A of the lower waist region 32A of the front waistline 3A is larger than the stretch ratio of the elastic stretchable member 42B of the lower waist region 32B of the rear waistline 3B, and the stretch ratio of the elastic stretchable member 44A of the abdominal region 34A of the front waistline 3A is smaller than the stretch ratio of the elastic stretchable member 44B of the abdominal region 34B of the rear waistline 3B.

Through the pants-type diaper provided by the embodiment, the front waistline subregion and the back waistline subregion are used for carrying out subregion design on the stretching ratio and the transverse elastic stretching range, and stress with different lengths is formed by eliminating elasticity. Through the rubber arrangement, the elastic expansion range and the design of the stretching ratio of each region, the lifting property of the outer side of the hip part is improved, and sagging of the pants-type diaper in the use process is prevented.

The invention is described in more detail above in connection with the embodiments, but this is not to be construed as a limitation of the invention. Modifications and variations made under the same conception fall within the scope of the present invention.

Claims (9)

1. A pants-type diaper with improved fit is composed of an absorption body and an elastic waistline consisting of front and back waistlines whose transverse edges are joined to form a waist opening and two leg openings, the front and back waistlines being divided into waist region, lower waist region, upper abdomen region, lower abdomen region, and the elastic telescopic parts of waist region at front and back waistlines are made to be equal in thickness, spacing and number, and features that the elastic telescopic parts of lower waist region, upper abdomen region, abdomen region and lower abdomen region are made to be different in transverse middle and in transverse middle.

2. The pants-type diaper according to claim 1, wherein the stretch ratio of the elastic stretchable members in the waist region, the upper abdominal region, and the lower abdominal region of the front waistline is substantially the same as the stretch ratio of the elastic stretchable members in the corresponding regions of the rear waistline, and the stretch ratio of the elastic stretchable members in the lower waist region and the lower abdominal region of the front waistline is different from the stretch ratio of the elastic stretchable members in the corresponding regions of the rear waistline.

3. The pants-type diaper of claim 2, wherein the elastic extension ranges of the lateral sides of the upper abdominal region and the lower abdominal region of the front and rear waistlines are 15% -30% of the lateral dimensions of the front and rear waistlines, respectively.

4. A pant diaper according to any of claims 2 or 3, wherein the elastic extension and contraction ranges of the lateral sides of the waist region of the front waist and the abdomen region of the rear waist are respectively 10-20% of the lateral dimensions of the front and rear waist, and the elastic extension and contraction ranges of the lateral sides of the waist region of the front waist and the waist region of the rear waist are respectively 20-40% of the lateral dimensions of the front and rear waist.

5. The pants-type diaper with improved fit according to claim 4, wherein the elastic extension and contraction ranges of the lateral sides of the waist-lower region of the front waistline are not more than 0.5 times the elastic extension and contraction ranges of the lateral sides of the waist-lower region of the back waistline; the elastic expansion and contraction ranges of the two lateral sides of the abdomen area of the front waistline are more than or equal to 2 times of the elastic expansion and contraction ranges of the two lateral sides of the abdomen area of the back waistline.

6. The pants-type diaper according to any one of claims 1, 2, 3 and 5, wherein the elastic members of the waist region, the upper abdominal region and the lower abdominal region of the front waist line are substantially the same as the elastic members of the corresponding regions of the rear waist line, respectively, the elastic members of the lower waist region of the front waist line are smaller than the elastic members of the lower waist region of the rear waist line, and the elastic members of the abdomen region of the front waist line are larger than the elastic members of the abdomen region of the rear waist line.

7. The pants-type diaper with improved fit according to claim 1, wherein the elastic extension/contraction ranges of the lateral sides of the waist region of the front waistline and the abdomen region of the back waistline are 20% to 40% of the lateral dimensions of the front waistline and the back waistline, respectively, and the elastic extension/contraction ranges of the lateral sides of the waist region of the front waistline and the waist region of the back waistline are 10% to 20% of the lateral dimensions of the front waistline and the back waistline, respectively.

8. The pants-type diaper with improved fit according to claim 7, wherein the elastic extension and contraction ranges of the lateral sides of the waist-lower region of the front waistline are not less than 2 times the elastic extension and contraction ranges of the lateral sides of the waist-lower region of the back waistline; the elastic expansion and contraction ranges of the two lateral sides of the waist region of the front waistline are less than or equal to 0.5 times of the elastic expansion and contraction ranges of the two lateral sides of the waist region of the back waistline.

9. The pants-type diaper according to any one of claims 7 and 8, wherein the elastic extension/contraction members of the waist region, the upper abdominal region, and the lower abdominal region of the front waist line are substantially equal to the stretch ratio of the elastic extension/contraction members of the corresponding regions of the rear waist line, respectively, the elastic extension/contraction members of the lower waist region of the front waist line are larger than the elastic extension/contraction members of the lower waist region of the rear waist line, and the elastic extension/contraction members of the abdomen region of the front waist line are smaller than the elastic extension/contraction members of the abdomen region of the rear waist line.