CN221061040U - Underpants type paper diaper with improved fit - Google Patents

Abstract

A pants-type diaper with improved fit comprises an absorption body and an elastic waistline, wherein 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 front waistline and the rear waistline are divided into a waist region, a lower waist region, an abdomen region and an abdominal region approximately at the position from the waist opening to the leg opening in the longitudinal direction, the thickness, the spacing and the number of the elastic expansion pieces of the waist region positioned at the front waistline and the rear waistline are approximately equal, the thickness, the spacing and the number of the elastic expansion pieces of the leg regions positioned at the front waistline and the rear waistline are approximately equal, and the thickness, the spacing and the elastic expansion ratio of the elastic expansion pieces of the front waistline and the elastic expansion pieces of the rear waistline at least at the lower waist region and the abdomen region are different. According to the underpants type paper diaper provided by the invention, the fitting property of a product, the comfort level during wearing, sagging prevention and leakage prevention can be better improved.

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.

The invention provides a panty-shape diaper with improved fit, which comprises an absorption main body and an elastic waistline, wherein the elastic waistline comprises a front waistline and a rear waistline, 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 opening are approximately divided into a waist region, a lower waist region, an abdomen region and a lower leg abdomen region, the thicknesses, the distances and the numbers of the elastic telescopic elements of the waist regions of the front waistline and the rear waistline are approximately equal, the thicknesses, the distances and the numbers of the elastic telescopic elements of the lower leg abdomen regions of the front waistline and the rear waistline are approximately equal, and the thicknesses, the distances and the elastic telescopic ratios of the elastic telescopic elements of the front waistline and the lower waist region and the abdomen region are different.

According to the pants-type diaper with improved fit provided by the invention, preferably, the stretch ratio of the elastic extension piece of the waist region of the front waistline is not smaller than the stretch ratio of the elastic extension piece of the waist region of the back waistline; the thickness, the elastic expansion ratio and the interval between the elastic expansion members in the waist region of the front waistline and the elastic expansion members in the abdomen region of the back waistline are approximately equal to each other. The thickness of the elastic expansion piece in the waist region in the front waistline is 480-940 denier, the interval is 10-20mm, the elastic expansion piece is arranged in a state of extending 250-350%, the thickness of the elastic expansion piece in the abdomen region is 620-1100 denier, the interval is 4-13mm, and the elastic expansion piece is arranged in a state of extending 150-240%. The thickness of the elastic expansion piece in the waist region in the rear waistline is 620-1100 denier, the interval is 6-20mm, the elastic expansion piece is arranged in a state of extending 250-350%, the thickness of the elastic expansion piece in the abdomen region is 480-940 denier, the interval is 10-30mm, and the elastic expansion piece is arranged in a state of extending 250-350%. According to the pants-type diaper with improved fit, the thickness of the elastic expansion member in the waist region of the front and rear waistline is 620-1100 denier, the interval is 4-8mm, the elastic expansion member in the abdominal region of the front and rear waistline is 250-350% extended, the thickness of the elastic expansion member in the abdominal region of the front and rear waistline is 620-1100 denier, the interval is 4-20mm, and the elastic expansion member in the abdominal region of the rear waistline is 250-350% extended, wherein the elastic expansion member of the front and rear waistline has one or both of (1) the elastic expansion member in the front waistline region has a larger elongation than the elastic expansion member in the waist region of the rear waistline, and (2) the elastic expansion member in the abdominal region of the front waistline has a smaller elongation than the elastic expansion member in the abdominal region of the rear waistline.

According to the pants-type diaper for improving fit provided by the invention, alternatively, the elastic expansion member of the waist region in the front waistline has a thickness of 620-1100 denier, a spacing of 4-13mm, and is arranged in a state of extending 250-350%, and the elastic expansion member of the abdomen region has a thickness of 480-940 denier, a spacing of 10-30mm, and is arranged in a state of extending 250-350%; the thickness of the elastic expansion piece in the waist region in the rear waistline is 480-940 denier, the interval is 10-20mm, the elastic expansion piece is arranged in a state of extending 250-350%, the thickness of the elastic expansion piece in the abdomen region is 620-1100 denier, the interval is 4-13mm, and the elastic expansion piece is arranged in a state of extending 250-350%. The thickness of the elastic expansion piece in the waist region of the front waistline and the back waistline is 620-1100 denier, the interval is 4-8mm, the elastic expansion piece in the lower abdomen region of the front waistline and the back waistline is 250-350% elongation, the thickness of the elastic expansion piece in the lower abdomen region of the front waistline and the back waistline is 620-1100 denier, the interval is 4-20mm, the elastic expansion piece in the lower abdomen region of the back waistline is 250-350% elongation, wherein the elastic expansion piece of the front waistline and the back waistline has one or two of (1) the elastic expansion piece in the waist region of the front waistline has smaller elongation than the elastic expansion piece in the waist region of the back waistline, and (2) the elastic expansion piece in the lower abdomen region of the front waistline has larger elongation than the elastic expansion piece in the lower abdomen region of the back waistline.

According to the pants-type diaper with improved fit, as an alternative, the denier of the elastic expansion member in the waist lower region and the abdomen region of the front waistline is larger than the denier of the elastic expansion member in the corresponding region of the back waistline, the interval distance between the elastic expansion members in the waist lower region and the abdomen region of the front waistline is smaller than the interval distance between the elastic expansion members in the corresponding region of the back waistline, and the stretch ratio of the elastic expansion members in the waist lower region and the abdomen region of the front waistline is larger than the stretch ratio of the elastic expansion members in the corresponding region of the back waistline.

According to the pants-type diaper with improved fit, preferably, the denier of the elastic extension member in the waist region and the abdomen region of the front waistline is not smaller than the denier of the elastic extension member in the corresponding region of the back waistline, the spacing distance between the elastic extension members in the waist region and the abdomen region of the front waistline is not greater than the spacing distance between the elastic extension members in the corresponding region of the back waistline, and the stretch ratio of the elastic extension member in the waist region and the abdomen region of the front waistline is not smaller than the stretch ratio of the elastic extension member in the corresponding region of the back waistline.

According to the pants-type diaper with improved fit, preferably, the leg-surrounding elastic stretchable members located in the leg opening area are provided with the first elastic stretchable members and the second elastic stretchable members, the first elastic stretchable members and the second elastic stretchable members are respectively provided with 2-5, the second elastic stretchable members are closer to the leg opening area than the first elastic stretchable members, and the first elastic stretchable members are arranged in a stretching state in a gradually increasing relation in the direction toward the leg opening.

According to the pants-type diaper with improved fit, preferably, the first elastic expansion member has a thickness of 480-960 denier, the second elastic expansion member has a thickness of 200-480 denier, the second elastic expansion member extends from the side edge joint portion along the arc-shaped leg peripheral edge toward the crotch region, and the second elastic expansion member at the rear waistline has an extension length 1.2-1.8 times that of the second elastic expansion member at the front waistline. Preferably, at least the second elastic members of the leg elastic members located at the front waistline extend toward the crotch portion longer than the elastic members located near the leg openings. As shown in fig. 4, the second elastic members 482A1 of the leg elastic members located at the front waistline extend longer toward the crotch than 482A2, and the second elastic members 482A2 of the elastic members extend longer toward the crotch than 482 A3.

According to the pants-type diaper with improved fit, the thickness, the spacing and the elastic expansion ratio of the elastic expansion pieces at least in the lower waist region and the abdomen region in the front waistline and the rear waistline are set to be different, the distribution and the stretching ratio of the front elastic expansion piece and the rear elastic expansion piece are optimized, different elastic expansion piece dense regions are respectively formed in the front waistline and the rear waistline of the pants-type diaper, and the fit, the comfort degree, the sagging prevention and the leakage prevention of a product can be better improved.

According to the underpants type paper diaper with improved fit, the elastic telescopic parts at the leg periphery are provided with the first elastic telescopic parts and the second elastic telescopic parts, the elastic telescopic parts at the outer sides of the encrypted arc-shaped leg periphery are distributed, different stretching ratios and point breaking processes are arranged according to the front end and the rear end, the lifting performance at the outer sides of the hips is improved, and sagging is prevented.

Drawings

Fig. 1 is a perspective view of an embodiment of a pant diaper according to the present invention;

fig. 2 is an unfolding schematic diagram of a pants-type diaper provided by the invention;

FIG. 3 is a schematic cross-sectional view of FIG. 2;

FIG. 4 is a schematic view of a leg elastic stretch member of a pant diaper;

FIG. 5 is a plan view of the elastic waist circumference of a pant diaper according to one embodiment in a flat, uncontracted state showing the garment-facing surface;

FIG. 6 is a plan view of the elastic waist circumference of a pant diaper according to another embodiment, shown in its flat, uncontracted state, with the garment-facing surface;

Fig. 7 is a plan view of the elastic waist circumference of a pant diaper according to yet another embodiment, which is in a flat, uncontracted state, showing the garment-facing surface.

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 sheet, 23 is a liquid-impermeable back sheet, 24 is a leak-proof barrier, 3 is an elastic waistline, 3 is a front waistline, 3 is a rear waistline, C is a crotch region, 3 is a side edge joint, 7 is a waist opening, 8 is a leg opening, 9 is an arc leg circumference, 31 is a waist region, 32 is a lower waist region, 33 is an abdominal region, 31A is a waist region of a front waistline, 32A is a lower waist region of a front waistline, 33A is an abdomen region of a front waistline, 34A is a lower abdomen region of a front waistline, 31B is a lower waist region of a rear waistline, 32B is a lower waist region of a rear waistline, 33B is an abdomen region of a rear waistline, 34B is a lower abdomen region of a rear waistline, 4 is an elastic stretchable member, 41A is an elastic stretchable member of a waist region of a front waistline, 42A is an elastic stretchable member of a lower waist region of a front waistline, 43A is an elastic stretch of an abdomen area of a front waistline, 44A is an elastic stretch of a waist area of a front waistline, 41B is an elastic stretch of a waist area of a back waistline, 42B is an elastic stretch of a waist area of a back waistline, 43B is an elastic stretch of an abdomen area of a back waistline, 44B is an elastic stretch of a abdomen area of a back waistline, 48A is a front leg elastic stretch, 48B is a back leg elastic stretch, 81 is a leg area, 481A is a first elastic stretch of the front leg elastic stretch, 481A1, 481A2, 481A3 are elastic stretches arranged at intervals 481A, 482A is a second elastic stretch of the front leg elastic stretch, 482A1, 482A2, 482A3 are elastic stretches arranged at intervals 482A, 481B is a first elastic stretch of the back leg elastic stretch, 482B is a second elastic stretch of the back leg elastic stretch.

Detailed Description

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.

Examples

As shown in fig. 1 to 3, 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 abdomen region 33, and a lower abdomen region 34 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. 5, the pant diaper of one embodiment has a waist elastic plan view in a flat, uncontracted state, showing the garment-facing surface. The pants-type diaper 1 has substantially equal thicknesses, pitches, and numbers of elastic stretchable members (41A, 41B) located in waist regions (31A, 31B) of front and rear waistlines, and substantially equal thicknesses, pitches, and numbers of elastic stretchable members (44A, 44B) located in abdominal regions (34A, 34B) of front and rear waistlines, and the front waistline 3A and the rear waistline 3B are provided with different thicknesses, pitches, and elastic stretch ratios of the elastic stretchable members at least in the waist region 32 and the abdominal region 33. Alternatively, the thickness, the elastic expansion ratio, and the interval between the elastic expansion elements 43B of the lower waist region 32A of the front waist and the elastic expansion elements 43B of the abdomen region 33B of the rear waist are substantially equal, and the thickness, the elastic expansion ratio, and the interval between the elastic expansion elements 43A of the abdomen region 33A of the front waist and the elastic expansion elements 42B of the lower waist region 32B of the rear waist are substantially equal.

The waist region 31 of the pants-type diaper having improved fit in this embodiment has elastic stretchable members (41A, 41B) of 620-1100 denier in thickness, 6-12 elastic stretchable members are provided in the front and rear waistlines at an interval of 4-8mm in a state of 250% -350% elongation, and the elastic stretchable member 41A located in the front waistline waist region 31A has a larger elongation than the elastic stretchable member 41B located in the rear waistline waist region 31B. Preferably, the stretch ratio of the elastic members 41A in the front waistline waist region 31A is not smaller than the stretch ratio of the elastic members 41B in the back waistline waist region 31B.

The embodiment provides a pants-type diaper with improved fit, wherein the waist elastic extension 42A of the front waistline is smaller than the waist elastic extension 42B of the rear waistline. The elastic members 42A in the waist region 32A in the front waistline have a thickness of 480 to 940 deniers, and 2 to 5 elastic members 42A are provided at intervals of 10 to 20mm in a state of being stretched by 250 to 350%. The elastic expansion member 42B in the waist region 32B in the rear waistline has a thickness of 620 to 1100 denier, and is provided with 6 to 12 pairs of elastic expansion members 42B in a state of being elongated by 250 to 350% and being spaced apart by 6 to 20 mm.

The embodiment provides a pants-type diaper with improved fit, wherein the abdomen elastic stretchable member 43A of the front waistline is larger in denier than the abdomen elastic stretchable member 43B of the rear waistline. 6 to 12 elastic members are provided in the elastic member 43A of the front waistline abdomen area 33A in a state of 150 to 240% extended at intervals of 4 to 13mm, and the thickness of the elastic member 43A is 620 to 1100 denier. In the elastic members 43B of the rear waistline abdomen area 33B, 2 to 5 elastic members having a thickness of 480 to 940 denier are provided at intervals of 10 to 30mm in a state of being elongated by 250 to 350%.

The panty-shape diapers of this embodiment provide an improved fit, the thickness of the elastic expansion members (44A, 44B) of the abdominal region 34 in the front and rear waistlines is 620-1100 denier, the interval is 4-20mm, and 2-6 are arranged in a state of extending 250% -350%. The elastic members 44A located in the front waistline abdominal region 34A have a smaller elongation than the elastic members 44B located in the back waistline abdominal region 34B.

As shown in fig. 2 or 4, the pants-type diaper with improved fit is provided in this embodiment, the leg elastic extension 48 has a first elastic extension 481 and a second elastic extension 482, the first elastic extension and the second elastic extension have 2-5 intervals, respectively, and the second elastic extension 482 is closer to the edge of the leg opening area than the first elastic extension 481. The first elastic expansion pieces are arranged in a stretching state in a gradually increasing relation in the direction of the leg opening, as shown in fig. 4, three first elastic expansion pieces 481A1, 481A2 and 481A3 are distributed in the direction of the leg opening in the first elastic expansion piece 481A of the leg surrounding elastic expansion pieces close to the front waistline, and the stretching ratio relation of the three first elastic expansion pieces is as follows: 481A1 < 481A2 < 481A3. The first elastic expansion members 481A and 481B have a thickness of 480-960 denier, the second elastic expansion members 482A and 482B have a thickness of 200-480 denier, the second elastic expansion members 482A and 482B extend from the side edge joint portions 3D toward the center of the crotch region along the arcuate leg peripheral edges, and the second elastic expansion member 482B in the rear waistline direction has an extension length longer than that of the second elastic expansion member 482A in the front waistline direction, and generally, the second elastic expansion member 482B in the rear waistline direction has an extension length 1.2-1.8 times that of the second elastic expansion member 482A in the front waistline direction.

With the pants-type diaper 1 provided in the present embodiment, the stretching force of the elastic stretchable member 42B located in the waist-lower region of the rear waistline > the stretching force of the elastic stretchable member 42A located in the waist-lower region of the front waistline, and the stretching force of the elastic stretchable member 43A located in the abdomen region of the front waistline > the stretching force of the elastic stretchable member 43B located in the abdomen region of the rear waistline. When the pants-type diaper is used by a wearer, the thickness, the interval and the elastic expansion ratio of the elastic expansion pieces at least in the waist lower region and the abdomen region are different, and the side edge joint parts form an arc-shaped state under the action of different stretching effects of the elastic expansion pieces in different regions, so that the pants-type diaper can be well attached to the waist lower region and the abdomen region of the wearer.

Examples

As shown in fig. 6, another embodiment pant diaper is shown in a flat, uncontracted state, with its garment-facing surface shown in plan view. The elastic expansion members (41A, 41B) in the waist region of the front and rear waistlines are arranged in a state of being elongated by 250% -350% with a thickness of 620-1100 denier at a distance of 4-8 mm. Preferably, the elastic members 41A located in the front waistline waist region 31A have a smaller elongation than the elastic members 41B located in the back waistline waist region 31B.

The embodiment provides a pants-type diaper with improved fit, wherein the waist elastic extension 42A of the front waistline is larger than the waist elastic extension 42B of the rear waistline. The elastic members 42A in the waist region in the front waistline have a thickness of 620 to 1100 denier, and are arranged in a state of being extended by 250 to 350% and being spaced apart by 4 to 13mm by 6 to 12 pairs of the elastic members 42A. The elastic members 42B in the waist region in the rear waistline have a thickness of 480 to 940 denier, and 2 to 5 elastic members 42B are provided at intervals of 10 to 20mm in a state of being stretched by 250 to 350%.

The embodiment provides a pants-type diaper with improved fit, wherein the abdomen elastic expansion piece 43A of the front waistline is smaller in denier than the abdomen elastic expansion piece 43B of the back waistline. In the elastic expansion member 43A of the front waistline abdomen area, 2 to 5 elastic expansion members having a thickness of 480 to 940 denier are provided at intervals of 10 to 30mm in a state of being elongated by 250 to 350%. 6-12 elastic expansion pieces are arranged in the elastic expansion piece 43B of the abdomen area of the back waistline in a state of being stretched by 250-350% at intervals of 4-13mm, and the thickness of the elastic expansion piece 43A is 620-1100 denier.

The embodiment provides a pants-type diaper with improved fit, wherein the thickness of elastic expansion members (44A, 44B) in the abdominal region in the front and rear waistlines is 620-1100 denier, the interval is 4-20mm, and 2-6 elastic expansion members are arranged in a state of extending 250% -350%. Preferably, the elastic members 44A located in the lower abdomen area of the front waistline have a larger elongation than the elastic members 44B located in the lower abdomen area of the back waistline.

Through the pants-type diaper provided by the embodiment, the stretching force of the elastic expansion piece positioned in the waist-lower area of the rear waistline is smaller than the stretching force of the elastic expansion piece positioned in the waist-lower area of the front waistline, and the stretching force of the elastic expansion piece positioned in the abdomen area of the front waistline is smaller than the stretching force of the elastic expansion piece positioned in the abdomen area of the rear waistline. When the pants-type diaper is used by a wearer, the thickness, the interval and the elastic expansion ratio of the elastic expansion pieces at least in the waist lower region and the abdomen region are different, and the side edge joint parts form an arc-shaped state under the action of different stretching effects of the elastic expansion pieces in different regions, so that the pants-type diaper can be well attached to the waist lower region and the abdomen region of the wearer.

Examples

As shown in fig. 7, a pant diaper according to still another embodiment has a waist elastic plan view in a flat, uncontracted state, showing the garment-facing surface. The denier of the elastic expansion pieces (42A, 43A) of the waist lower region and the abdomen region of the front waistline is larger than the denier of the elastic expansion pieces of the corresponding region of the back waistline, the interval distance between the elastic expansion pieces of the waist lower region and the abdomen region of the front waistline is smaller than the interval distance between the elastic expansion pieces of the corresponding region of the back waistline, and the stretching ratio of the elastic expansion pieces of the waist lower region and the abdomen region of the front waistline is larger than the stretching ratio of the elastic expansion pieces of the corresponding region of the back waistline. The elastic expansion members (42A, 43A) in the lower waist region and the abdomen region of the front waistline are arranged in a state of being stretched by 250% -350% and having a thickness of 620-1100 denier and a spacing of 4-13 mm. The elastic expansion members (42B, 43B) in the lower waist region and the abdomen region of the rear waistline are arranged in a state of 150% -300% elongation, with a thickness of 480-940 denier and a spacing of 10-30 mm.

The embodiment provides a pants-type diaper with improved fit, wherein elastic expansion members (41A, 41B) in waist regions of front and rear waistlines are arranged in a state of being elongated by 250% -350% at a distance of 4-8mm and a thickness of 620-1100 denier. Preferably, the elastic members 41A located in the front waistline waist region 31A have a smaller elongation than the elastic members 41B located in the back waistline waist region 31B.

The embodiment provides a pants-type diaper with improved fit, wherein the thickness of elastic expansion members (44A, 44B) in the abdominal region in the front and rear waistlines is 620-1100 denier, the interval is 4-20mm, and 2-6 elastic expansion members are arranged in a state of extending 250% -350%. Preferably, the elastic members 44A located in the lower abdomen area of the front waistline have a smaller elongation than the elastic members 44B located in the lower abdomen area of the back waistline.

By the pants-type diaper provided by the embodiment, the stretching force of the elastic expansion piece positioned in the lower waist region and the abdomen region of the front waistline is larger than the stretching force of the elastic expansion piece positioned in the lower waist region and the abdomen region of the rear waistline. When the pants-type diaper is used by a wearer, the lower waist region and the abdomen region of the front waistline are stretched less than the corresponding regions of the rear waistline, and the side edge joint portions are formed in a circular arc shape toward the front waistline.

According to the pants-type diaper with improved fit, the thickness, the spacing and the elastic expansion ratio of the elastic expansion pieces at least in the lower waist region and the abdomen region in the front waistline and the rear waistline are set to be different, the distribution and the stretching ratio of the front elastic expansion piece and the rear elastic expansion piece are optimized, different elastic expansion piece dense regions are respectively formed in the front waistline and the rear waistline of the pants-type diaper, and the fit, the comfort degree, the sagging prevention and the leakage prevention of a product can be better improved.

According to the underpants type paper diaper with improved fit, the elastic telescopic parts at the leg periphery are provided with the first elastic telescopic parts and the second elastic telescopic parts, the elastic telescopic parts at the outer sides of the encrypted arc-shaped leg periphery are distributed, different stretching ratios and point breaking processes are arranged according to the front end and the rear end, the lifting performance at the outer sides of the hips is improved, and sagging 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 (10)

1. The utility model provides an improve pants-type panty-shape diapers of fit, includes absorption main part and elastic waistline, and this elastic waistline includes preceding waistline and back waistline, and the lateral margin of preceding waistline and back waistline joins in order to form a waist opening and two leg openings, and preceding, back waistline is roughly divided into waist region, abdomen region from waist opening to leg circumference open-ended position, its characterized in that: the thickness, the spacing and the number of the elastic expansion pieces in the waist region of the front waistline and the back waistline are approximately equal, the thickness, the spacing and the number of the elastic expansion pieces in the abdomen region of the front waistline and the back waistline are approximately equal, and the thickness, the spacing and the elastic expansion ratio of the elastic expansion pieces in at least the abdomen region and the abdomen region in the front waistline and the back waistline are different.

2. The pants-type diaper with improved fit according to claim 1, wherein the stretch ratio of the elastic members in the waist region of the front waistline is not smaller than the stretch ratio of the elastic members in the waist region of the back waistline; the thickness, the elastic expansion ratio and the interval between the elastic expansion members in the waist region of the front waistline and the elastic expansion members in the abdomen region of the back waistline are approximately equal to each other.

3. The pant diaper having improved fit according to claim 1, wherein: the thickness of the elastic expansion piece in the waist region in the front waistline is 480-940 denier, the interval is 10-20mm, the elastic expansion piece is arranged in a state of extending 250-350%, the thickness of the elastic expansion piece in the abdomen region is 620-1100 denier, the interval is 4-13mm, and the elastic expansion piece is arranged in a state of extending 150-240%; the thickness of the elastic expansion piece in the waist region in the rear waistline is 620-1100 denier, the interval is 6-20mm, the elastic expansion piece is arranged in a state of extending 250-350%, the thickness of the elastic expansion piece in the abdomen region is 480-940 denier, the interval is 10-30mm, and the elastic expansion piece is arranged in a state of extending 250-350%.

4. A pant diaper having improved fit according to claim 3, wherein: the thickness of the elastic expansion piece in the waist region of the front waistline and the back waistline is 620-1100 denier, the interval is 4-8mm, the elastic expansion piece is arranged in a state of extending 250% -350%, the thickness of the elastic expansion piece in the abdomen region of the front waistline and the back waistline is 620-1100 denier, the interval is 4-20mm, the elastic expansion piece is arranged in a state of extending 250% -350%, wherein the elastic expansion piece of the front waistline and the back waistline has one or two of (1) the elastic expansion piece in the waist region of the front waistline has larger elongation than the elastic expansion piece of the waist region of the back waistline, and (2) the elastic expansion piece in the abdomen region of the front waistline has smaller elongation than the elastic expansion piece in the abdomen region of the back waistline.

5. The pant diaper having improved fit according to claim 1, wherein: the thickness of the elastic expansion piece in the waist region in the front waistline is 620-1100 denier, the interval is 4-13mm, the elastic expansion piece is arranged in a state of extending 250% -350%, the thickness of the elastic expansion piece in the abdomen region is 480-940 denier, the interval is 10-30mm, and the elastic expansion piece is arranged in a state of extending 250% -350%; the thickness of the elastic expansion piece in the waist region in the rear waistline is 480-940 denier, the interval is 10-20mm, the elastic expansion piece is arranged in a state of extending 250-350%, the thickness of the elastic expansion piece in the abdomen region is 620-1100 denier, the interval is 4-13mm, and the elastic expansion piece is arranged in a state of extending 250-350%.

6. The pant diaper having improved fit according to claim 5, wherein: the thickness of the elastic expansion piece in the waist region of the front waistline and the back waistline is 620-1100 denier, the interval is 4-8mm, the elastic expansion piece in the lower abdomen region of the front waistline and the back waistline is 250-350% elongation, the thickness of the elastic expansion piece in the lower abdomen region of the front waistline and the back waistline is 620-1100 denier, the interval is 4-20mm, the elastic expansion piece in the lower abdomen region of the back waistline is 250-350% elongation, wherein the elastic expansion piece of the front waistline and the back waistline has one or two of (1) the elastic expansion piece in the waist region of the front waistline has smaller elongation than the elastic expansion piece in the waist region of the back waistline, and (2) the elastic expansion piece in the lower abdomen region of the front waistline has larger elongation than the elastic expansion piece in the lower abdomen region of the back waistline.

7. The pant diaper having improved fit according to claim 1, wherein: the denier of the elastic telescopic parts of the waist lower region and the abdomen region of the front waistline is larger than that of the elastic telescopic parts of the corresponding region of the back waistline, the interval distance of the elastic telescopic parts of the waist lower region and the abdomen region of the front waistline is smaller than that of the elastic telescopic parts of the corresponding region of the back waistline, and the stretching ratio of the elastic telescopic parts of the waist lower region and the abdomen region of the front waistline is larger than that of the elastic telescopic parts of the corresponding region of the back waistline.

8. The pant diaper having improved fit according to claim 1, wherein: the leg surrounding elastic expansion piece positioned in the leg opening area is provided with a first elastic expansion piece and a second elastic expansion piece, the first elastic expansion piece and the second elastic expansion piece are respectively provided with 2-5 pieces, the second elastic expansion piece is closer to the leg opening area than the first elastic expansion piece, and the first elastic expansion piece is arranged in a gradually increasing relation of the stretching ratio in the stretching state towards the leg opening direction.

9. The pant diaper having improved fit according to claim 8, wherein: the thickness of the first elastic expansion piece is 480-960 denier, the thickness of the second elastic expansion piece is 200-480 denier, the second elastic expansion piece extends from the side edge joint part along the arc-shaped leg circumference edge towards the crotch area, and the extending length of the second elastic expansion piece in the rear waistline direction is 1.2-1.8 times of the extending length of the second elastic expansion piece in the front waistline direction.

10. The pant diaper having improved fit according to claim 8, wherein: the elastic members near the abdomen area of the second elastic members of the leg-surrounding elastic members located at least in the front waistline extend longer toward the crotch portion than the elastic members near the leg openings.