Openable underpants-type absorbent article

Abstract

The utility model discloses an openable underpants type absorptive article which comprises an absorptive body, a waist member and joint members, the joint members are of sheet structures, the other ends, opposite to the fixed ends, of the joint members are free ends, and when the free ends of the two joint members are horizontally close to each other to be tangent to each other, the joint members can be opened. The outer edge contours of the free ends of the two joint components are all or partially in a linear contact state. The utility model solves the problems of complex process and high cost of the existing jointing component with a curved outline, and 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 openable underwear-type absorbent article. Background Art

[0002] Disposable trouser-type sanitary products are widely used in the field of disposable sanitary products, especially in the field of disposable sanitary products for adults, due to their good wearing fit. In order to facilitate wearing, the existing innovative trouser-type disposable sanitary products are provided with tear lines that can be torn at the side edges, and use joint components to tighten and fix the waistline. The shape design of the existing joint components is relatively simple, and the complex shape, especially the joint components with curved contours, have the disadvantages of complex manufacturing process, high cost, and unstable operation.

[0003] For example, in the prior Chinese patent, the patent number is 2022216950216, and the patent name is an absorbent article. The fastening component described therein has a relatively simple shape. It is impossible to intuitively see from the figure that when the free ends are horizontally close to each other to be tangent, the contact state of the outer edge contour is, and the distance between the joint and the free end is very small, which makes it easy for the sheet of the joint member to be folded and adhered to the joint. Another example is the Chinese patent application number 202280038960.X, the invention name is an underwear-type absorbent article, and the shapes of the upper and lower sides of its joint member are adjusted, but there is a problem of complex process. In addition, due to the small distance between the free end and the joint, there is also the problem of inconvenient hand-held operation, the force required to pull it open is large, and the operating feel is poor. Another example is the Chinese patent application number 202280038960.X, the invention name is a joint member in an underwear-type absorbent article, and the entire free end is an arc-shaped structure. When forming, it must first be cut into discrete bodies, and then the direction is adjusted and compounded with the waist sheet. The process is complicated and the cost is high. Utility Model Content

[0004] The utility model aims to provide an openable underwear type absorbent article, which solves the problems of complicated process and high manufacturing cost of existing joint components.

[0005] The utility model solves the technical problem by adopting a technical solution: an openable underwear-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 having two fixed ends joined to the non-skin side of the front waist portion in the left-right direction, and a joining portion joined to the non-skin side of the front waist portion is provided on a surface of the joining member that matches the non-skin side of the front waist portion, wherein the joining portion can be separated from the front waist portion under the action of an external force;

[0009] The joining member is a sheet structure, and the other end of the joining member relative to the fixed end is a free end. When the free ends of the two joining members are horizontally close to each other until they are tangent, the outer contours of the free ends of the two joining members are in full or partial linear contact.

[0010] Compared with the prior art, the free ends of the two joining members are in point contact under the above conditions, which means that waste will be generated in the forming process of the joining member material, causing it to change from a strip-like continuous body to a discrete body, which will lead to a complicated manufacturing process and a decrease in equipment speed. However, this patent has the advantage of simple process while ensuring the formation of a curved profile through a line contact method. It should be pointed out that "the free ends of the two joining members are horizontally close to each other until they are tangent to each other" does not require that the two joining members have a lateral length that is directly tangent or overlapped when worn, but rather a feature in the non-worn state where their free ends are horizontally close to each other, and the reason for this feature is caused by the cutting process. The curved profile on the joining member is produced by a trimming process.

[0011] Judging from market feedback, the shape of the joint component is an important factor in attracting consumers to buy. Therefore, designing the outer edge contour of the joint component into a personalized pattern can enhance the market competitiveness of the product. However, this means that waste will be generated while cutting the joint component material into a personalized pattern. The traditional process will cut the continuous strip into discrete bodies in this process. The subsequent process requires one or two sets of special devices to grab the discrete bodies and place them accurately near the sealing part to finally complete the welding and product cutting. On the one hand, the molding process is complicated and the manufacturing cost is high. On the other hand, the device grabs the discrete body under high-speed conditions, and the equipment stability will decrease, resulting in a reduction in the speed of the production line. This patented product is finally formed through trimming, cutting, welding and cutting processes, which greatly simplifies the molding process and does not cause a reduction in the speed of the production line. After the trimming gives the product a specific pattern, the joint component strip is still in a continuous state, and then passes through the cutting device and the welding and cutting device in sequence to finally form it.

[0012] As a specific implementation of the utility model, the free end is provided with a straight line segment arranged in the up-down direction, and a curved line segment extending in the left-right direction is provided between the upper and lower ends of the straight line segment and the upper and lower ends of the fixed end.

[0013] As a specific implementation of the utility model, the free end is provided with a wave section or a sawtooth section arranged in the up and down direction, and an extension section extending in the left and right direction is provided between the upper and lower ends of the wave section and the upper and lower ends of the fixed end.

[0014] To facilitate holding and prevent the joining component from folding inward and joining with the joining portion, when the front waist portion and the back waist portion are not combined and unfolded, there is a tear line along the upper and lower directions of the front waist portion in the area where the joining component overlaps with the front waist portion; the distance from the joining portion to the fixed end is greater than the distance from the tear line to the fixed end, and the distance from the joining portion to the free end is 5mm-40mm.

[0015] In order to prevent the joint portion from scratching the skin, the vertical distance between the joint portion and the outer edge contour of the joint component is greater than or equal to 2 mm.

[0016] The existing joint part and the sheet material of the joint component are basically combined by gluing. It is found in use that the joint part is prone to warping around the joint component sheet material. In order to avoid the problem of warping or even falling off of the four sides of the joint part due to weak joint force, the joint part is evenly distributed with crimping joint points that are crimped and fixed with the joint component.

[0017] Beneficial effects of the utility model:

[0018] The utility model can simplify the production process and reduce production costs by optimizing and adjusting the shape of the joint member and setting a linear contact segment such as a straight segment, a sawtooth segment or a wave segment at the free end. At the same time, the arc-shaped structure on both sides is both beautiful and can ensure that the joint member will not be folded inward and joined to the joint part, thereby improving the wearer's convenience of use. The joint part is crimped and fixed to the joint member through the distributed crimping joint points. The structural fixation has good reliability and can effectively prevent the joint part from warping around or partially falling off and affecting normal use.

[0019] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0021] Figure 2 It is a schematic diagram of the structure of the utility model in the unfolded state.

[0022] Figure 3 for Figure 2 Cross-sectional view along line III-III.

[0023] Figure 4 for Figure 1 Sectional view along line II-II.

[0024] Figure 5 for Figure 1 Sectional view of II.

[0025] Figure 6 This is a diagram of the molding strip of the joint component in Example 1.

[0026] Figure 7 Schematic diagram of the distribution of crimping points in Example 1 Figure 1 .

[0027] Figure 8 This is a diagram of the molding strip of the joint component in Example 2.

[0028] Fig. 9 This is a diagram of the molding strip of the joint component in Example 3.

[0029] Fig.10 The free end is a schematic diagram of a structure in which the free end is wavy.

[0030] Fig.11 The free end is a sawtooth-shaped structural schematic diagram.

[0031] Fig.12 Schematic diagram of the distribution of crimping points in Example 1 Figure 2 .

[0032] Fig.13 This is a structural schematic diagram of the distribution of crimping joints in Example 2.

[0033] Fig.14 This is a structural schematic diagram of the distribution of crimping joints in Example 3. DETAILED DESCRIPTION

[0034] 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".

[0035] 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, and includes 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.

[0036] like Figure 2 As 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.

[0037] 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.

[0038] 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 any material such as spunbond nonwoven fabric, hot-rolled nonwoven fabric, spunmelt nonwoven fabric, hot air nonwoven fabric, etc., and the inner sheet 202 is any material such as 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.

[0039] On the front waist part 21, a front waist elastic member 23 is applied between the outer layer sheet 201 and the inner layer sheet 202 on the non-skin contact side along the left and right direction of the front waist part 21, and the front waist elastic member 23 is continuously applied from one end to the other end in the left and right direction of the front waist part 21, and at least two bonding points are fixedly bonded near the tear line. 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 layer sheet 201 and the inner layer sheet 202 bonded and fixed.

[0040] 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. According to actual conditions, a plurality of combining points can be provided on the back waist portion 22, 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.

[0041] 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 the peripheral opening 11 can be tightly hugged to the waist of the wearer when wearing. 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.

[0042] The left and right sides of the front waist portion 21 and the back waist portion 22 can be sealed and fixed to the sealing portion 40 by any one of the methods including but not limited to adhesive bonding, heat pressing or ultrasonic welding. The joining member 30 is a sheet-like structure, one side of which is fixed to 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 joining 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 joining member 30 on the non-skin side of the front waist portion; it can also be combined with the front waist portion 21 first, and then sealed with the back waist portion 22.

[0043] The other side of the joint member 30 relative to the fixed end 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. In order to prevent the joint portion 31 from scratching the skin during use, the vertical distance between the joint portion 31 and the outer edge contour of the joint member 30 is greater than or equal to 2 mm.

[0044] The joint portion 31 is a long strip structure arranged in the up-down direction. Figure 6As shown, the free end of the joint member 30 is provided with a straight section 32 arranged in the vertical direction, and a curved section 33 extending in the left-right direction is provided between the upper and lower ends of the straight section 32 and the upper and lower ends of the fixed end 34. The shape of the curved section 33 is an arc, which can be a single arc structure or a structure with multiple step-shaped arcs. This shape is not only aesthetically pleasing, but also not easy to cause the joint member 30 to be folded inwards and joined to the joint portion 31, avoiding the problem that the edge of the joint member 30 is joined to the joint portion 31 during use, reducing the area of ​​the joint portion 31 joined to the front waist portion 21, and affecting the joining effect.

[0045] In addition, by providing the straight line segment 32, the forming process of the joint member 30 can be adopted as follows: Figure 6 On the continuous sheet shown in the figure, the curved shape of the upper and lower edges of the joint member 30 is first cut out by a shape cutter, and then the free end straight section 32 is cut by a cutting device and placed near the sealing part, and finally the sealing and product cutting are completed by a welding and cutting device to form the final shape. The whole process does not require the use of special devices to grab the discrete body, nor does it require direction adjustment, so there are fewer processes and low processing costs. The above straight section can also be used as follows Fig.10 The wavy or Fig.11 Shapes such as the sawtooth shown.

[0046] The "trimming" process in this patent refers to cutting the strip of the joining component into a continuous body with a specific shape, rather than a discrete body. The "cutting" process refers to cutting the aforementioned continuous body into special discrete bodies with the size of two joining components and the free ends being far away from each other. The "welding and cutting" process refers to welding and cutting the aforementioned special discrete body after it is placed at the position to be sealed in the waist part, so that the product is finally formed.

[0047] like Figure 2 As shown, in the uncombined and unfolded state of the front waist portion 21 and the back waist portion 22, a tear line 14 is formed in the region where the joining member 30 overlaps with the front waist portion 21 along the vertical direction of the front waist portion 21. The tear line 14 includes a group of discontinuous cuts, such as Figure 4 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 made on the application route of the front waist elastic member 23, and the front waist elastic member bonding point is provided on the inner side of the tear line 14 of the front waist portion 21, and the front waist elastic member is fixedly bonded to the outer sheet 201 and the inner 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.

[0048] 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.

[0049] When the front waist portion 21 and the back waist portion 22 are not combined and unfolded, and the joint member 30 overlaps the front waist portion 21, the distance from the joint portion 31 to the fixed end 34 is greater than the distance from the tear line 14 to the fixed end 34, thereby ensuring that the joint portion 31 is joined to the ventral contact portion 211. In order to facilitate the operation of holding the free end of the joint member 30, the distance from the joint portion 31 to the free end straight section 32 is not less than 5 mm, thereby ensuring the convenience of holding and the strength required to open the joint portion 31. At the same time, in order to control the eversion of the free end of the joint member 30, the distance from the joint portion 31 to the free end straight section 32 is not more than 40 mm.

[0050] Conventionally, the joint portion 31 and the joint member 30 are bonded by gluing, which may cause warping defects around the joint portion 31. To ensure the reliability of the connection and avoid the above defects during use, the joint portion 31 and the joint member 30 may be fixed by pressing, so that the two are more tightly combined to form multiple press-fit joints 35, such as Figure 7 The crimping joints on the joint part can be distributed in a way that they are dense at the top and bottom and sparse in the middle; they can also be evenly distributed, such as Fig.12 shown.

[0051] 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 incision at the upper end of the tear line 14 extends to the upper edge of the front waist portion 21. Figure 6 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 7 In order to improve the user experience and avoid the non-separable portion 212 being folded and pressed on 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 an indentation, the tear line 14 is as close to the side edge of the front waist portion 21 as possible in the left and 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 between the tear line 14 and the side edge of the front waist portion 21 is between 2.5 mm and 20 mm.

[0052] Embodiment 2:

[0053] like Figure 1As 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".

[0054] 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.

[0055] The joining member 30 is a sheet-like structure, one side of which is fixed to the sealing portion 40 by any of the methods including but not limited to gluing, hot pressing or ultrasonic welding. The other side of the joining member 30 relative to the fixed end is a free end, and a joining portion 31 is provided on the side of the joining member 30 that matches the non-skin side of the front waist portion 21. Figure 8 As shown, the free end of the joint member 30 is provided with a straight line segment 32 arranged in the vertical direction, and a curved line segment 33 extending in the left-right direction is provided between the upper and lower ends of the straight line segment 32 and the upper and lower ends of the fixed end 34. The straight line segment 32 is located in the middle position of the joint member in the vertical direction, and the curved line segments 33 at the upper and lower ends of the straight line segment 32 have the same shape, both of which are irregular continuous curved line structures. In order to facilitate the fingers to grasp and tear the joint member, a protruding pull ear 331 is provided on the curved line segment 33.

[0056] In order to ensure the reliability of the connection between the joint part 31 and the joint member 30, on the basis of gluing and fixing, the joint part 31 and the joint member 30 can also be fixed by pressing, so that the two are more tightly combined to form a plurality of pressing joint points 35, such as Fig.13 As shown, the crimping joint 35 on the joint portion 31 is in the form of a "dense distribution at the top and bottom and sparse distribution in the middle" design; it can also be evenly distributed, such as Fig.12 As shown. Figure 10-12 As shown, when the free ends of the two joint members 30 are horizontally close to each other until they are tangent to each other, the outer contours of the free ends of the two joint members 30 are all in a linear contact state.

[0057] Embodiment 3:

[0058] like 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".

[0059] 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.

[0060] The joining member 30 is a sheet-like structure, one side of which is fixed to the sealing portion 40 by any of the methods including but not limited to gluing, hot pressing or ultrasonic welding. The other side of the joining member 30 relative to the fixed end is a free end, and a joining portion 31 is provided on the side of the joining member 30 that matches the non-skin side of the front waist portion 21. Fig. 9 As shown, the free end of the joint member 30 is provided with a straight segment 32 arranged in the vertical direction, and a curved segment 33 extending in the left-right direction is provided between the upper and lower ends of the straight segment 32 and the upper and lower ends of the fixed end 34. The straight segment 32 is located in the middle and lower part of the joint member 30 in the vertical direction, and the curved segments 33 at the upper and lower ends of the straight segment 32 have different shapes, so that the entire joint member 30 presents an asymmetric structure in the vertical direction. Specifically, the curved segment 33 at the upper end of the straight segment 32 adopts an irregular continuous curved structure, and the curved segment 33 at the lower end of the straight segment 32 adopts a single arc-shaped curved structure, and the length of the curved segment 33 at the upper end is greater than the length of the curved segment 33 at the lower end. In order to facilitate fingers to grasp and tear the joint member, a protruding pull ear 331 is provided on the curved segment 33 at the upper end.

[0061] In order to ensure the reliability of the connection between the joint part 31 and the joint member 30, on the basis of gluing and fixing, the joint part 31 and the joint member 30 can also be fixed by pressing, so that the two are more tightly combined to form a plurality of pressing joint points 35, such as Fig.14 As shown, the crimping joint 35 on the joint portion 31 is in the form of a "dense distribution at the top and bottom and sparse distribution in the middle" design; it can also be evenly distributed, such as Fig.12As shown. Fig.14 As shown, when the free ends of the two joint members 30 are horizontally close to each other until they are tangent to each other, the outer contours of the free ends of the two joint members 30 are partially in a linear contact state.

[0062] 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. An openable 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 having two fixed ends joined to the non-skin side of the front waist portion in the left-right direction, and a joining portion joined to the non-skin side of the front waist portion is provided on a surface of the joining member that matches the non-skin side of the front waist portion, wherein the joining portion can be separated from the front waist portion under the action of an external force; The feature is that the joining member is a sheet-like structure, and the other end of the joining member relative to the fixed end is a free end. When the free ends of the two joining members are horizontally close to each other until they are tangent, the outer edge contours of the free ends of the two joining members are in full or partial linear contact.

2. The openable pant-type absorbent article according to claim 1, characterized in that: The free end is provided with a straight line segment arranged in the up-down direction, and a curved line segment extending in the left-right direction is provided between the upper and lower ends of the straight line segment and the upper and lower ends of the fixed end.

3. The openable pant-type absorbent article according to claim 1, characterized in that: The free end is provided with a wave segment or a sawtooth segment arranged in the up-down direction, and a curved segment extending in the left-right direction is provided between the upper and lower ends of the wave segment and the upper and lower ends of the fixed end.

4. The openable pant-type absorbent article according to claim 2 or 3, characterized in that: The curved line segment is in the shape of a circular arc or in the shape of a circular arc with a plurality of step structures.

5. The openable pant-type absorbent article according to claim 1, characterized in that: The joint component is formed by trimming, cutting, welding and cutting processes.

6. The openable pant-type absorbent article according to claim 1, wherein: In the area where the joining member overlaps with the front waist part, there is a tear line along the upper and lower directions of the front waist part; the distance from the joining part to the fixed end is greater than the distance from the tear line to the fixed end, and the distance from the joining part to the free end is 5mm-40mm.

7. The openable pant-type absorbent article according to claim 2 or 3, characterized in that: The vertical distance between the joint portion and the outer edge contour of the joint component is greater than or equal to 2 mm.

8. The openable pant-type absorbent article according to claim 1, characterized in that: The joint portion is provided with crimping joint points which are crimped and fixed with the joint component.

9. The openable pant-type absorbent article according to claim 8, characterized in that: The crimping joints are densely distributed at the top and bottom and sparsely distributed in the middle of the joint.

10. The openable pant-type absorbent article according to claim 8, wherein: The crimping joints are evenly distributed over the joint.

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