Underpants-type absorbent article

Abstract

The utility model discloses an underpants type absorptive article which comprises an absorptive body, a waist body component and a joint component, a tearing area is arranged in the overlapped area of the joint component and a front waist body part, and the tearing area comprises a tearing line arranged in the vertical direction of the front waist body part and a pre-tearing area arranged in the left-right direction of the tearing line; when the front waist part is torn and opened, the breaking strength required by the tearing area is smaller than that of other areas of the front waist part. Through the improvement of the structure, the front waist part can be opened along the tearing line more easily, the needed force is smaller, and the disposable sanitary product can be widely applied to the field of disposable sanitary products.

Description

Technical Field

[0001] The utility model relates to the field of disposable sanitary products, in particular to an underwear type absorbent article. Background Art

[0002] Pants-type disposable sanitary products have a wide range of applications in the field of disposable sanitary products, especially in the field of disposable sanitary products for adults, due to their good fit. For easy wearing, existing innovative pants-type disposable sanitary products have a tearable tear line set on the side edge, and use a joint member such as Velcro to tighten and fix the waistline. To ensure that the tear line is relatively easy to tear, such as the Chinese patent application number 202280038960.X, the invention name is underwear-type absorbent article, which discloses that a high elastic part is set around the tear line to facilitate pulling along the tear line when tearing. However, the local hardness of this structure is relatively large, there is a problem of wearing comfort, and there is still a problem of being difficult to tear. In addition, the length of the joint member in this patent is greater than the length of the front waistline. Although this structure can well cover the tear line and maintain its beauty, combined with the distance between the joint part on the joint member and the lower edge of the joint member, it can be obtained that when the structure is worn, the joint part is easy to directly contact the skin, and the joint part is made of a harder material and has a hook-shaped structure, therefore, it will affect the comfort of the wearer. In addition, the structural setting of the front leg circumference part of the reference document is easy to cause folding when worn, which will further increase the probability of the joint part contacting the skin. In addition, the front waist circumference part of the patent adopts a two-layer structure of an outer sheet and an inner sheet. After the joint component is joined with the outer sheet, when the joint part is opened, the joint part is easy to cause the outer sheet to be partially pulled off, affecting the wearing comfort; it may even cause the outer sheet to be damaged due to excessive force, exposing the internal front waist elastic component. At the same time, due to the influence of the joining force between the joint part and the outer sheet, it may also cause the joint part, especially the four corners, to be detached from the joint component, affecting normal use and also having an adverse impact on the quality reputation of the product. Utility Model Content

[0003] One of the purposes of the utility model is to provide a panty-type absorbent article, which solves the problem that a large force is required to tear the existing panty-type absorbent article.

[0004] Another object of the utility model is to provide a panty-type absorbent article, which solves the problem that the joints of the existing panty-type absorbent articles are easy to scratch the skin when worn, resulting in poor comfort.

[0005] One of the technical solutions adopted by the utility model to solve the technical problem is: an underpants-type absorbent article, comprising:

[0006] Absorbent body;

[0007] A waist member, which is superimposed on the absorbent body in the front-to-back direction, comprises a front waist portion and a rear waist portion, and can be stretched in the left-right direction; the left and right sides of the front waist portion are respectively combined with the left and right sides of the rear waist portion through a sealing portion, thereby forming a trouser-type structure;

[0008] A joining member, which is joined to the non-skin side of the front waist portion at both sides in the left-right direction and has a joining portion provided on the side where the joining member matches the non-skin side of the waist portion;

[0009] A tearing area is provided in the area where the joining member overlaps with the front waist portion, the tearing area comprising a tearing line extending in the vertical direction of the front waist portion, and a pre-tear area, the tearing line is arranged in the pre-tear area in the left-right direction, and the pre-tear area extends from the upper edge to the lower edge of the front waist portion;

[0010] When the front waist portion is torn open, the breaking strength required in the tearing area is smaller than the breaking strength of other areas of the front waist portion.

[0011] The term "extending from the upper edge to the lower edge of the front waist portion" means that the pre-torn area has a tendency to extend from the upper edge to the lower edge on the front waist portion, including but not limited to the embodiment of extending from the upper edge to the lower edge. The aforementioned "waist member" includes two layers of upper and lower sheets, and an elastic body disposed between the two sheets, and the elastic body can be any elastic material such as elastic bands and elastic films.

[0012] In order to avoid multiple adhesion between the joint and the front waistline, which may cause the elastic components to leak out due to the rupture of the outer sheet, the front waist part includes an outer sheet, an inner sheet placed inside the outer sheet, and a group of front waist elastic components are applied between the outer sheet and the inner sheet away from the skin contact side along the left and right directions of the front waist part; an intermediate sheet is also laid between the front waist elastic components and the outer sheet. The intermediate sheet and the outer sheet are bonded with low-weight glue, and reinforcing glue is applied to the area where the joint between the intermediate sheet and the outer sheet overlaps with the front waist part. The "low-weight glue" here is relative to the "reinforced glue". Generally speaking, the gram weight range of low-weight glue is 0.5-3g / m 2 ; The weight range of the reinforcing glue is 10g / m 2 above.

[0013] Another technical solution of the present invention is to provide a panty-type absorbent article, comprising:

[0014] Absorbent body;

[0015] A waist member, which is superimposed on the absorbent body in the front-to-back direction, comprises a front waist portion and a rear waist portion, and can be stretched in the left-right direction; the left and right sides of the front waist portion are respectively combined with the left and right sides of the rear waist portion through a sealing portion, thereby forming a trouser-type structure;

[0016] A joining member, which is joined to the non-skin side of the front waist portion at both sides in the left-right direction and has a joining portion provided on the side where the joining member matches the non-skin side of the waist portion;

[0017] When the joining portion on the joining member is joined to the front waist portion, the distance between the lower edge of the joining portion and the lower edge of the front waist portion is 5 mm to 40 mm.

[0018] In order to further reduce the probability of the joint part contacting the skin and ensure wearing comfort, a rear leg elastic member is provided at the lower edge of the rear waist portion, and the rear leg elastic member extends from below the side edge of the rear waist portion in the left-right direction along the lower edge of the rear waist portion to the crotch area. Furthermore, a front leg elastic member is provided at the lower edge of the front waist, and the front leg elastic member extends from below the side edge of the front waist in the left-right direction along the lower edge of the front waist to the crotch area.

[0019] Beneficial effects of the utility model: The utility model sets pre-tear areas on both sides of the tear line, and the tear area composed of the tear line and the pre-tear areas requires a smaller breaking strength than other areas of the front waist part, so that the front waist part is easier to be opened along the tear line, and the required force is smaller. After the middle layer sheet is bonded to the outer layer sheet, the overall rigidity of the sheet can be improved, so that the outer layer sheet is not easily pulled up and torn, thereby effectively avoiding the problem of leakage of the internal front waist elastic component. The utility model also avoids the problem of the front waist sheet of the leg part being folded when worn, causing the joint to scratch the skin and affecting the wearing comfort, by designing the distance between the joint and the lower edge of the front waist part and setting the leg elastic component.

[0020] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 .

[0022] Figure 2 The structure of the utility model in the unfolded state is shown in FIG. Figure 1 .

[0023] Figure 3 for Figure 2 Section view of III-III Figure 1 .

[0024] Figure 4 for Figure 2 Section view of III-III Figure 2 .

[0025] Figure 5 for Figure 1 Sectional view along line II-II.

[0026] Figure 6 for Figure 1 Sectional view of II.

[0027] Figure 7 for Figure 1 A partial enlarged view of D in the middle.

[0028] Figure 8 for Figure 1 A partial enlarged view of E.

[0029] Fig. 9 The three-dimensional structure of the utility model is shown in FIG. Figure 2 .

[0030] Fig.10 The structure of the utility model in the unfolded state is shown in FIG. Figure 2 . DETAILED DESCRIPTION

[0031] Example 1: Figure 1 As shown, a pant-type absorbent article 1 has mutually intersecting (orthogonal) "up-down direction", "left-right direction" and "front-back direction". In the up-down direction, when the wearer wears the pant-type absorbent article 1, the side corresponding to the waist of the wearer is the "upper side", and the side corresponding to the crotch of the wearer is the "lower side". In the front-back direction, the side corresponding to the ventral side of the wearer during use is the "front side", and the side corresponding to the back side of the wearer is the "back side". In addition, when the wearer wears the pant-type absorbent article 1, the side in contact with the wearer's skin is the "skin side", and the opposite side is the "non-skin side".

[0032] The underwear-type absorbent article of this embodiment includes: an absorbent body 10 for absorbing liquid discharged from the human body; a waist member 20, which is superimposed on the absorbent body 10 in the front-to-back direction, including a front waist portion 21 and a rear waist portion 22; and a pair of joining members 30, one end of which is fixedly arranged on both sides of the front waist portion 21 in the left and right directions, and a joining portion 31 is arranged on the joining member 30, and is bonded to the front waist portion 21 through the joining portion 31.

[0033] like Figure 2As shown, the panty-type absorbent article can be divided into three regions in the unfolded state, including the front waist region A, the rear waist region B and the crotch region C. The crotch region C is folded in half at the middle position in the vertical direction, and the left and right sides of the front waist portion 21 and the left and right sides of the rear waist portion 22 are combined by a pair of sealing portions 40, so that the absorbent article is in a panty-type state, as shown in FIG. Figure 1 As shown, the pant-type absorbent article is formed with a waist opening 11 and two leg openings 12 on the left and right.

[0034] like Figure 2 As shown, the absorbent body 10 is a long strip structure, generally including an absorbent core and upper and lower sheets, as well as anti-side leakage structures on both sides. This structure is not the innovation of this embodiment and is a conventional known structure, and will not be described in detail here.

[0035] like Figure 3 As shown, the waist member 20 includes an outer sheet 201 and an inner sheet 202 placed inside the outer sheet 201, that is, the outer sheet 201 is provided with two layers, which are placed on the upper surface and the lower surface of the inner sheet 202 respectively, and the inner sheet 202 is covered therein. The outer sheet 201 is made of spunbond nonwoven fabric, hot rolled nonwoven fabric, spunmelt nonwoven fabric, hot air nonwoven fabric, etc., and the inner sheet 202 is made of spunbond nonwoven fabric, hot rolled nonwoven fabric, spunmelt nonwoven fabric, etc. Figure 2 As shown, the outer sheet 201 and the inner sheet 202 are cut in the crotch area C to form two left and right O-cut side edges 13. When the front waistline portion 21 and the back waistline portion 22 are combined through the sealing portion 40, the crotch area C forms a leg opening 12 along the O-cut side edges 13.

[0036] On the front waist part 21, a front waist elastic member 23 is applied between the outer sheet 201 and the inner sheet 202 on the non-skin contact side along the left and right direction of the front waist part 21, and at least two bonding points of the front waist elastic member 23 are fixedly bonded to the side of the pre-torn area away from the sealing part 40, and the front waist elastic member 23 on the pre-torn area is broken. According to actual conditions, multiple bonding points can be set on the front waist part 21 to make the front waist elastic member 23 and the outer sheet 201 and the inner sheet 202 of the front waist part 21 be fixedly bonded.

[0037] On the back waist portion 22, a back waist elastic member 24 is applied between the outer sheet 201 and the inner sheet 202 on the non-skin contact side along the left and right directions of the front and rear waist portions 22, and the back waist elastic member 24 is continuously applied from one end to the other end in the left and right directions of the back waist portion 22, and at least two end points are fixedly combined on the sealing portions 40 at the two ends of the back waist portion 22. It is also possible to set a plurality of combining points on the back waist portion 22 according to actual conditions, so that the back waist elastic member 24 is combined and fixed with the outer sheet 201 and the inner sheet 202 of the back waist portion 22.

[0038] Under the action of the front waist elastic member 23 and the back waist elastic member 24, the front waist portion 21 and the back waist portion 22 have contraction elasticity in the left and right directions, and after forming a trouser-type structure, the waist opening 11 has deformability, and when worn, the peripheral opening 11 can be tightly hugged to the waist of the wearer. The front waist elastic member 23 and the back waist elastic member 24 are preferably, but not limited to, a group of elastic bands arranged at intervals along the upper and lower directions of the disposable sanitary product.

[0039] The left and right sides of the front waist portion 21 and the back waist portion 22 can be sealed and fixed by any one of the methods including but not limited to adhesive bonding, heat pressing or ultrasonic welding to form a sealing portion 40. The joint member 30 is a sheet-like structure, one side of which is fixed on the sealing portion 40 by any one of the methods including but not limited to adhesive bonding, heat pressing or ultrasonic welding. In actual operation, the front waist portion 21, the back waist portion 22 and the joint member 30 can be sealed and fixed together, or it can be done in steps, first sealing the front waist portion 21 and the back waist portion 22, and then combining the joint member 30 on the non-skin side of the front waist portion; or the joint member 30 can be combined with the front waist portion 21 first, and then sealed with the back waist portion 22.

[0040] The other side of the joint member 30 is a free end, and a joint portion 31 is provided on the side of the joint member 30 that matches the non-skin side of the front waist portion 21. The joint portion 31 can be bonded to the outer sheet 201 of the front waist portion 21, and can be opened and separated from the front waist portion 21 under the action of external force. The surface of the joint portion 31 is distributed with hooks for hooking the outer sheet 201, such as the male fastener in Velcro.

[0041] like Figure 2As shown, in the uncombined and unfolded state of the front waist portion 21 and the back waist portion 22, a tearing zone F is provided in the area where the joint member 30 overlaps with the front waist portion 21, and the tearing zone F includes a tearing line 14 extending in the up-down direction of the front waist portion 21, and a pre-tear area 15. The tearing line 14 is placed in the pre-tear area 15 in the left-right direction, and the pre-tear area 15 extends from the upper edge to the lower edge of the front waist portion 21. When the front waist portion 21 is torn open, the required breaking strength of the tearing zone F is less than the breaking strength of other areas of the front waist portion 21, so that when the front waist portion 21 is torn open, it can be opened along the tearing line 14 without being torn open in other areas.

[0042] The tear line 14 comprises a set of discontinuous cuts, such as Figure 6 As shown, it is a cross-sectional view of the tear line 14 cut. Figure 5 1 is a cross-sectional view of the connection between two adjacent cuts of the tear line 14. Preferably, the cut is cut on the application route of the front waist elastic member 23. The front waist elastic member bonding point is arranged on the inner side of the front waist portion 21 located in the pre-tear area 15, and the front waist elastic member 23 is fixedly bonded to the outer layer sheet 201 and the inner layer sheet 202 of the front waist portion 21 through the bonding point. The inner side here refers to the side of the front waist portion 21 away from the sealing portion 40.

[0043] For the convenience of description, the portion of the front waistline 21 that is separated from the sealing portion 40 after being torn along the tear line 14 is called the ventral contact portion 211, and the portion that is not separated from the sealing portion 40 after being torn along the tear line 14 is called the non-separation portion 212.

[0044] The tear line 14 extends from the upper edge of the front waist portion 21 to the lower edge in the up-down direction of the disposable sanitary product. To facilitate tearing from the upper or lower edge of the front waist portion 21, the uppermost incision of the tear line 14 extends to the upper edge of the front waist portion 21. Figure 7 The tear line 14 extends to the lower edge of the front waist portion 21, as shown; the lower end of the incision 14 extends to the lower edge of the front waist portion 21, as shown Figure 8 In order to improve the user experience and prevent the non-separable portion 212 from being folded and pressed against the human skin when the front waist portion 21 is torn along the tear line 14 and then re-engaged by the joining member 30, causing indentations, the tear line 14 is as close to the side edge of the front waist portion 21 as possible in the left-right direction. At the same time, considering the convenience of hand-held operation, it is ensured that when holding the front waist portion sealing portion 40, it will not press on the tear line 14 and cause the phenomenon of being unable to tear. The distance L between the tear line 14 and the side edge of the front waist portion 21 is between 2.5 mm and 20 mm, as shown in FIG. Figure 8 shown.

[0045] In order to solve the problem that the front waist elastic component 23 is not cut off at the tear line 14, which increases the force required for tearing and affects the user's usage experience, the front waist elastic component 23 is cut at the pre-tear areas 15 on the left and right sides of the tear line 14, so that it can be opened along the tear line 14 when the front waist part 21 is pulled.

[0046] The pre-tear area 15 comprises a plurality of pre-tear belts 151 arranged at intervals and arranged in the vertical direction of the front waist part 21. The pre-tear belts 151 are provided with pressure points for cutting the front waist elastic member at intervals. The pressure points constitute a de-elasticity area 152 for de-elasticity of the front waist elastic member 23. The tear line is located in the middle of the tear area F in the left-right direction of the front waist part. The de-elasticity areas 152 on two adjacent pre-tear belts 151 are arranged in a staggered manner in the left-right direction of the front waist part 21. The provision of a plurality of tear belts 151 ensures that the front waist elastic member 23 is de-elasticity in the pre-tear area 15.

[0047] Embodiment 2: A panty-type absorbent article, comprising an absorbent body 10 for absorbing liquid discharged from the human body; a waist member 20, which is superimposed on the absorbent body 10 in the front-to-back direction, and comprises a front waist portion 21 and a rear waist portion 22; and a pair of joining members 30, one end of which is fixedly arranged on both sides of the front waist portion 21 in the left and right directions, and a joining portion 31 is arranged on the joining member 30, and is bonded to the front waist portion 21 through the joining portion 31.

[0048] like Figure 4 As shown, the waist member 20 comprises an outer sheet 201 and an inner sheet 202 placed inside the outer sheet 201, that is, the outer sheet 201 is provided with two layers, sandwiching the inner sheet 202. In order to avoid the problem that the outer sheet 201 is lifted by the hook of the joint part 31 when the joint member 30 is pulled during operation, causing burrs or tears locally, thereby affecting the next joint member 30 and the front waist part 21, a middle layer sheet 203 is laid between the outer sheet 201 on the side of the front waist part 21 away from the skin contact and the front waist elastic member 23. The outer layer sheet 201 is any material such as spunbond nonwoven fabric, hot-rolled nonwoven fabric, spunmelt nonwoven fabric, hot air nonwoven fabric, etc., the inner layer sheet 202 is any material such as spunbond nonwoven fabric, hot-rolled nonwoven fabric, spunmelt nonwoven fabric, etc., and the middle layer sheet 203 is any material such as spunbond nonwoven fabric, hot-rolled nonwoven fabric, spunmelt nonwoven fabric, etc.

[0049] The middle sheet 203 can be laid inside the outer sheet 201, that is, the middle sheet 203 is not fixed to the outer sheet 201 and the inner sheet 202 except for the sealing parts 40 at both ends and the junction of the front waist elastic member 23. When the outer sheet 201 is lifted by the hook of the joint part 31 to cause burrs or tears locally, the front waist elastic member 23 will not be exposed, and the joint member 30 and the front waist part 21 can continue to be joined, but the joining force may be reduced, resulting in the problem that the joint part 31 is opened under the action of external force.

[0050] To this end, the middle layer sheet 203 can be fixed to the outer layer sheet 201 by gluing, which can increase the rigidity of the outer layer sheet 201 and reduce the extent to which the outer layer sheet is lifted by the barbs on the joint 31, thereby reducing the generation of burrs and avoiding tearing of the outer layer sheet.

[0051] In order to ensure a certain rigidity and prevent the front waist part 21 from becoming hard due to the application of glue, which affects the wearing comfort, the intermediate layer sheet 203 and the outer layer sheet 201 are bonded with a low-weight glue 50. At the same time, in order to ensure the strength of the joint 31 and the outer layer sheet 203, between the intermediate layer sheet 203 and the outer layer sheet 201, when the front waist part 21 and the back waist part 22 are combined, a reinforcing glue 60 is locally applied to the area where the joint 31 overlaps with the front waist part 21, so as to ensure that the outer layer sheet 201 and the intermediate layer sheet 203 will not peel off each other under the pulling force of the joint 31. The other parts of the underwear type absorbent article of this embodiment are the same as those of embodiment 1.

[0052] Embodiment 3: A panty-type absorbent article, comprising an absorbent body 10 for absorbing liquid discharged from the human body; a waist member 20, which is superimposed on the absorbent body 10 in the front-to-back direction, and comprises a front waist portion 21 and a rear waist portion 22; and a pair of joining members 30, one end of which is fixedly arranged on both sides of the front waist portion 21 in the left and right directions, and a joining portion 31 is arranged on the joining member 30, and is bonded to the front waist portion 21 through the joining portion 31.

[0053] like Figure 2 ( Figure 2 As shown in the figure (with the front waist elastic member and the back waist elastic member omitted), the panty-type absorbent article can be divided into three regions in the unfolded state, including the front waist region A, the back waist region B and the crotch region C. The absorbent article is folded in half at the middle position along the vertical direction of the crotch region C, and the left and right sides of the front waist portion 21 and the left and right sides of the back waist portion 22 are combined by a pair of sealing portions 40, so that the absorbent article is formed into a panty-type state, as shown in FIG. Figure 1 As shown, the pant-type absorbent article is formed with a waist opening 11 and two leg openings 12 on the left and right.

[0054] In order to prevent the sheet of the waist member at the leg opening 12 from folding inward when the garment is worn like underwear, so that the joint portion 31 on the joint member 30 is exposed to the outside and rubs against the skin, causing damage to the skin, when the front waist portion 21 and the back waist portion 22 are not combined and unfolded, when the joint portion 31 on the joint member 30 is joined to the front waist portion, the vertical distance K between the lower edge of the joint portion 31 and the lower edge of the front waist portion 21 (i.e., the O-cut side 13) is 5mm-40mm, as shown in FIG. Figure 8 As shown, it is ensured that after the sheet material of the waist component at the leg opening 12 is folded inwardly, the joint portion 31 will not be exposed to the outside and scratch the skin.

[0055] To reduce the probability of the sheet material of the waist member at the leg opening 12 being folded inwardly when worn like underwear, Fig. 9 , Fig.10 As shown, Fig.10 The front waist elastic member and the back waist elastic member are omitted, and the lower edge of the front waist portion 21 is provided with a front leg elastic member 25, which extends from the lower edge of the front waist portion from the lower side of the left and right sides of the front waist portion 21 to the crotch region C, and is applied along the O-cut side 13. This structure can improve the fit of the front side of the leg opening 12 to the thigh, so that the sheet is not easy to fold. Similarly, a back leg elastic member 26 is provided at the upper edge of the back waist portion 22, and the back leg elastic member 26 extends from the upper side of the left and right sides of the back waist portion 21 to the crotch region C along the upper edge of the back waist portion, and is applied along the O-cut side 13. An inelastic area S is provided between the front leg elastic member 25 and the back leg elastic member 26, and the overall fit of the sheet and the leg of the waist member at the leg opening 12 is improved through the joint action of the front leg elastic member 25 and the back leg elastic member 26. The rest is the same as Example 1 or Example 2.

[0056] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A panty-type absorbent article comprising: Absorbent body; A waist member, which is superimposed on the absorbent body in the front-to-back direction, comprises a front waist portion and a rear waist portion, and can be stretched in the left-right direction; the left and right sides of the front waist portion are respectively combined with the left and right sides of the rear waist portion through a sealing portion, thereby forming a trouser-type structure; A joining member, which is joined to the non-skin side of the front waist portion at both sides in the left-right direction and has a joining portion provided on a side of the joining member that matches the non-skin side of the front waist portion; Features: A tearing area is provided in the area where the joining member overlaps with the front waist portion, the tearing area comprising a tearing line extending in the vertical direction of the front waist portion, and a pre-tear area, the tearing line is arranged in the pre-tear area in the left-right direction, and the pre-tear area extends from the upper edge to the lower edge of the front waist portion; When the front waist portion is torn open, the breaking strength required in the tearing area is smaller than the breaking strength of other areas of the front waist portion.

2. The underpants-type absorbent article according to claim 1, characterized in that: The front waist portion is applied with a front waist elastic component which makes the front waist portion stretchable in the left-right direction, and at least two connecting points of the front waist elastic component are fixedly connected to the side of the pre-torn area away from the sealing portion; the front waist elastic component on the pre-torn area is broken; and a back waist elastic component which makes the back waist portion stretchable in the left-right direction is applied from the leftmost end to the rightmost end of the back waist portion, and at least two end points of the back waist elastic component are fixedly connected to the two end positions of the back waist portion.

3. The underpants-type absorbent article according to claim 1, characterized in that: The pre-tear area includes a plurality of pre-tear belts arranged at intervals and arranged along the up-down direction of the front waist portion, and pressure points for cutting the front waist elastic component are arranged at intervals on the pre-tear belts.

4. The underpants-type absorbent article according to claim 1, characterized in that: The distance between the tear line and the side edge of the front waist part is greater than or equal to 2.0 mm.

5. The underpants-type absorbent article according to claim 4, characterized in that: The distance between the tear line and the side edge of the front waist part is greater than or equal to 2.0 mm and less than or equal to 15 mm.

6. The underpants-type absorbent article according to claim 1, characterized in that: The waist component includes an outer layer sheet, an inner layer sheet placed inside the outer layer sheet, and a group of front waist elastic components are applied between the outer layer sheet and the inner layer sheet away from the skin contact side along the left and right directions of the front waist part; an intermediate layer sheet is also laid between the front waist elastic component and the outer layer sheet.

7. The underpants-type absorbent article according to claim 6, characterized in that: The middle layer sheet and the outer layer sheet are bonded with low-weight glue.

8. The underpants-type absorbent article according to claim 7, characterized in that: Reinforced glue is applied to the area where the corresponding joint portion between the middle layer sheet and the outer layer sheet overlaps with the front waist portion.

9. A pant-type absorbent article comprising: Absorbent body; A waist member, which is superimposed on the absorbent body in the front-to-back direction, comprises a front waist portion and a rear waist portion, and can be stretched in the left-right direction; the left and right sides of the front waist portion are respectively combined with the left and right sides of the rear waist portion through a sealing portion, thereby forming a trouser-type structure; A joining member, which is joined to the non-skin side of the front waist portion at both sides in the left-right direction and has a joining portion provided on the side where the joining member matches the non-skin side of the waist portion; The feature is that when the joining portion on the joining component is joined to the front waist portion, the vertical distance between the lower edge of the joining portion and the lower edge of the front waist portion is 5mm-40mm.

10. The underpants-type absorbent article according to claim 9, characterized in that: The lower edge of the rear waist portion is provided with a rear leg elastic member, and the rear leg elastic member extends from below the side edges of the rear waist portion in the left-right direction along the lower edge of the rear waist portion toward the crotch area.

11. The underpants-type absorbent article according to claim 10, characterized in that: A front leg elastic member is provided at the lower edge of the front waist portion, and the front leg elastic member extends from below the side edges of the front waist portion in the left-right direction along the lower edge of the front waist portion toward the crotch region.

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