Openable underwear-type absorbent article

Abstract

The present utility model provides an openable underwear-type absorbent article, comprising an absorbent body, a waist member, and an engagement member. The engagement member is of a sheet structure, and the end of the engagement member opposite to a fixed end is a free end. When the free ends of the two engagement members are horizontally approaching each other until tangency, the outer edge contours of the free ends of the two engagement members are in a linear contact state, completely or locally. The present utility model solves the problems of complex process and cost-inefficiency of existing engagement members with a curved profile, and can be widely used in the field of disposable sanitary products.

Description

Openable pant-type absorbent article TECHNICAL FIELD

[0001] The utility model relates to the field of disposable sanitary products, especially to an openable pant-type absorbent article. BACKGROUND

[0002] The pant-type disposable sanitary product has good wearing fit and is widely used in the field of disposable sanitary products, especially in the field of adult disposable sanitary products. To facilitate wearing, the existing innovative pant-type disposable sanitary product is provided with a tearable tear line on the side edge, and a joint member is used to tighten and fix the waistline. The shape design of the existing joint member is relatively single, and the joint member with a complex shape, especially with a curved contour, has the disadvantages of complex manufacturing process, high cost and unstable operation.

[0003] For example, in the prior art Chinese patent No. 2022216950216, the fastening component described therein has a relatively simple shape, and the contact state of the outer contour when the free ends are horizontally close to each other to be tangent cannot be intuitively seen from the figure. Moreover, the distance between the joint part and the free end is very small, which can easily cause the sheet of the joint member to be folded and adhered to the joint part. For another example, in the prior art Chinese patent application No. 202280038960.X, the shape of the joint member on the upper and lower sides is adjusted, but the process is complex. In addition, due to the small distance between the free end and the joint part, it is not convenient to operate by hand, and a large amount of force is required to pull and open, which results in poor operation feeling. For another example, in the prior art Chinese patent application No. 202280038960.X, the joint member in the pant-type absorbent article has an arc-shaped structure, which is first cut into discrete bodies during forming, and then is adjusted in direction and combined with the waistline sheet, which results in a complex process and high cost. TECHNICAL SOLUTION

[0004] The utility model aims to provide a kind of openable pant-type absorbent article, solve the problems of complex process and high manufacturing cost of existing joint member.

[0005] The technical scheme adopted by the utility model to solve its technical problems is as follows: an openable pant-type absorbent article includes:

[0006] An absorbent body;

[0007] A waist member is stacked on the absorbent body in the front-rear direction, includes a front waist part and a rear waist part, and is stretchable in the left-right direction; the left and right sides of the front waist part are combined with the left and right sides of the rear waist part through sealing parts, thereby forming a pant-type structure;

[0008] The joining member has a fixed end combined on the non-skin side of the front waist part in the left-right direction, and a joining part combined with the non-skin side of the front waist part on the side of the joining member matched with the non-skin side of the front waist part, and the joining part can be separated from the front waist part under the action of an external force;

[0009] The joining member is in 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 horizontally approach each other to be tangent, the outer edges of the free ends of the two joining members are in a full or partial linear contact state.

[0010] Compared with the prior art, that is, the free ends of the two joining members are in a point contact state under the above condition, which means that the material of the joining member will generate waste in the forming process, and the material changes from a continuous strip to a discrete body, which will lead to a complex manufacturing process and a decrease in equipment speed. However, the present application has the advantages of simple process and forming a curved profile through linear contact. It should be pointed out that the free ends of the two joining members horizontally approach each other to be tangent, which does not require the two joining members to have a horizontal length that is directly tangent or coincident in the wearing state, but has the feature that the free ends of the two joining members horizontally approach each other in the non-wearing state, and the feature is caused by the cutting process. The curved profile on the joining member is generated by the cutting process.

[0011] From market feedback, the shape of the joining member is an important factor for consumers to purchase, so designing the outer edge profile of the joining member to have a personalized pattern can enhance the market competitiveness of the product. However, this means that the joining member material will be cut into a personalized pattern while generating waste, and the traditional process cuts the continuous strip into discrete bodies, and the subsequent process needs to use one or two special devices to grab the discrete bodies and accurately place them near the sealing part, and finally complete welding and product cutting. On the one hand, the forming process is complex and the manufacturing cost is high, on the other hand, the device will have a decrease in stability when grabbing the discrete bodies at high speed, which will lead to a decrease in the speed of the production line. The product of the present application is finally formed through the edge cutting, cutting and welding cutting processes, which greatly simplifies the forming process and does not cause a decrease in the speed of the production line. After the edge cutting gives the product a specific pattern, the joining member strip is still in a continuous state, and then passes through the cutting device and the welding cutting device in turn, and is finally formed.

[0012] As a specific embodiment of the present application, the free end is provided with a straight line segment arranged in the up-down direction, and a curved segment extending in the left-right direction is arranged 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 embodiment of the utility model, the free end is provided with a wave section or a sawtooth section arranged in the up-down direction, and an extension section extending in the left-right direction is arranged between the upper and lower ends of the wave section and the upper and lower ends of the fixed end.

[0014] To facilitate hand-holding and avoid the engagement member from being inwardly folded to engage with the engagement part, a tear line is arranged in the area where the engagement member overlaps the front waist part in the up-down direction of the front waist part in the unfolded state where the front waist part and the rear waist part are not combined.

[0015] To avoid the engagement part from scratching the skin, the vertical distance between the engagement part and the outer contour of the engagement member is greater than or equal to 2 mm.

[0016] The existing engagement part and the sheet of the engagement member are generally combined by adhesive bonding, and it is found in use that the engagement part is prone to be lifted up from the sheet of the engagement member around the periphery. To avoid the problem that the engagement part is lifted up around the periphery or even falls off due to small engagement force, the engagement part is uniformly distributed with crimping junctions for crimping and fixing the engagement member. Advantages

[0017] The utility model optimizes and adjusts the shape of the engagement member, sets linear sections, sawtooth sections or wave sections as line contact sections at the free end, can simplify the production process and reduce the production cost. At the same time, the arc-shaped structures on both sides are not only beautiful but also can ensure that the engagement member will not be inwardly folded to engage with the engagement part, improving the convenience of the wearer. The engagement part is crimped and fixed with the engagement member through the distributed crimping junctions, and the structure has good fixing reliability and can effectively prevent the problem that the engagement part is lifted up around the periphery or locally falls off to affect normal use.

[0018] The utility model will be described in more detail below in combination with the drawings and examples. DRAWINGS

[0019] Fig. 1 is a schematic diagram of the three-dimensional structure of the utility model.

[0020] Fig. 2 is a schematic diagram of the structure of the utility model in the unfolded state.

[0021] Fig. 3 is a sectional view of III-III in Fig. 2.

[0022] Fig. 4 is a sectional view of II-II in Fig. 1.

[0023] Fig. 5 is a sectional view of I-I in Fig. 1.

[0024] Fig. 6 is a forming tape diagram of the engagement member in Example 1.

[0025] Fig. 7 is a structural diagram of a crimping joint distribution in Example 1.

[0026] Fig. 8 is a molding tape diagram of the joining member in Example 2.

[0027] Fig. 9 is a molding tape diagram of the joining member in Example 3.

[0028] Fig. 10 is a structural diagram in which the free end is wavy.

[0029] Fig. 11 is a structural diagram in which the free end is sawtoothed.

[0030] Fig. 12 is a structural diagram of a crimping joint distribution in Example 1.

[0031] Fig. 13 is a structural diagram of a crimping joint distribution in Example 2.

[0032] Fig. 14 is a structural diagram of a crimping joint distribution in Example 3. DETAILED DESCRIPTION

[0033] Example 1:

[0034] As shown in Fig. 1, a panty-type absorbent article 1 has "superior-inferior direction", "left-right direction" and "anterior-posterior direction" which intersect (orthogonal) with each other. In the superior-inferior direction, in a state in which the panty-type absorbent article 1 is worn by a wearer, the side corresponding to the waist of the wearer is "superior side", and the side corresponding to the crotch of the wearer is "inferior side". In the anterior-posterior direction, the side corresponding to the abdominal side of the wearer at the time of use is "anterior side", and the side corresponding to the back side of the wearer is "posterior side". Further, in a state in which the panty-type absorbent article 1 is worn by the wearer, the side in contact with the skin of the wearer is "skin side", and the opposite side is "non-skin side".

[0035] The panty-type absorbent article of the present embodiment includes: an absorbent body 10 for absorbing body exudate liquid; a waist member 20 which is superposed on the absorbent body 10 in the anterior-posterior direction, and includes an anterior waist portion 21 and a posterior waist portion 22; and a pair of joining members 30 which are fixedly provided at both sides in the left-right direction of the anterior waist portion 21, and on which a joining portion 31 is provided, and which are adhered to the anterior waist portion 21 by the joining portion 31.

[0036] As shown in Fig. 2, the panty-type absorbent article in an unfolded state can be divided into three regions, including a front waist region A, a back waist region B, and a crotch region C. The crotch region C is folded in half along a middle position in a vertical direction, and the left and right sides of the front waist region 21 and the left and right sides of the back waist region 22 are joined by a pair of sealing portions 40, so that the absorbent article is formed in a panty-type state, as shown in Fig. 1, and the panty-type absorbent article is formed with a waist opening 11 and a leg opening 12 on each side.

[0037] As shown in Fig. 2, the shown absorbent body 10 is a long strip structure, which generally includes an absorbent core and upper and lower sheets, and side leakage prevention structures, which are not the innovations of the present embodiment and are conventional known structures, and will not be described in detail.

[0038] As shown in Fig. 3, the waist member 20 includes an outer sheet 201 and an inner sheet 202 disposed in the outer sheet 201, i.e., the outer sheet 201 is provided with two layers, which are disposed on the upper surface and the lower surface of the inner sheet 202, respectively, so as to cover the inner sheet 202. The outer sheet 201 is any one of a spunbond nonwoven fabric, a thermal calendered nonwoven fabric, a spunmelt nonwoven fabric, a through-air nonwoven fabric, etc., and the inner sheet 202 is any one of a spunbond nonwoven fabric, a thermal calendered nonwoven fabric, a spunmelt nonwoven fabric, etc. As shown in Fig. 2, the outer sheet 201 and the inner sheet 202 are cut in the crotch region C to form two O-cut side edges 13, and after the front waist region 21 and the back waist region 22 are joined by the sealing portions 40, the crotch region C forms the leg opening 12 along the O-cut side edges 13.

[0039] On the front waist region 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 in the left-right direction of the front waist region 21, and the front waist elastic member 23 is continuously applied from one end to the other end of the front waist region 21 in the left-right direction, and at least two end points are fixedly joined near the tear lines. According to actual conditions, a plurality of end points can be provided on the front waist region 21, so that the front waist elastic member 23 is fixedly joined with the outer sheet 201 and the inner sheet 202.

[0040] On the back waist region 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 in the left-right direction of the back waist region 22, and the back waist elastic member 24 is continuously applied from one end to the other end of the back waist region 22 in the left-right direction, and at least two end points are fixedly joined on the sealing portions 40 at the two ends of the back waist region 22. According to actual conditions, a plurality of end points can be provided on the back waist region 22, so that the back waist elastic member 24 is fixedly joined with the outer sheet 201 and the inner sheet 202 of the back waist region 22.

[0041] The front waist elastic member 23 and the back waist elastic member 24 make the front waist portion 21 and the back waist portion 22 have contraction elasticity in the left-right direction, and the waist opening 11 has deformability after forming the pant structure, so that the outer peripheral opening 11 can be tightly held on the wearer's waist when worn. The front waist elastic member 23 and the back waist elastic member 24 are preferably, but not limited to, a group of elastic rubber bands arranged in the up-down direction of the disposable sanitary article.

[0042] 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, but not limited to, glue bonding, heat pressing, or ultrasonic welding to form the sealing portion 40. The joint member 30 has a sheet structure, and one side edge thereof is fixed on the sealing portion 40 by any one of, but not limited to, glue 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 can be sealed and fixed step by step, i.e., the front waist portion 21 and the back waist portion 22 are sealed first, and then the joint member 30 is combined on the non-skin side of the front waist portion; or the joint member 30 is combined with the front waist portion 21 first, and then the joint member 30 is 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 the joint member 30 is provided with a joint portion 31 on the side that cooperates with the non-skin side of the front waist portion 21. The joint portion 31 can be bonded with the outer sheet 201 of the front waist portion 21, and can be separated from the front waist portion 21 under the action of an external force. The surface of the joint portion 31 is provided with hooks that can hook the outer sheet 201. In order to avoid scratching the skin with the joint portion 31 during use, the vertical distance between the joint portion 31 and the outer contour of the joint member 30 is greater than or equal to 2 mm.

[0044] The joint portion 31 has a long strip structure arranged in the up-down direction. As shown in FIG. 6, the free end of the joint member 30 is provided with a straight line segment 32 arranged in the up-down direction, and a curved line segment 33 extending in the left-right direction is arranged between the upper and lower ends of the straight line segment 32 and the upper and lower ends of the fixed end 34. The shape of the curved line segment 33 is a circular arc shape, which can be a single-arc structure or a multi-step arc structure. This shape not only has good aesthetics, but also is not easy to cause the joint member 30 to fold inward and engage with the joint portion 31, thereby avoiding the problem that the edge of the joint member 30 engages on the joint portion 31 during use, reducing the area of the joint portion 31 engaged on the front waist portion 21, and affecting the joint effect.

[0045] In addition, by setting the straight line segment 32, in the joining member 30 molding process, a continuous sheet as shown in Figure 6 can be used, the curve shape of the upper and lower edges of the joining member 30 is first cut by a shape cutter, then cut by a cutting device along the free end straight line segment 32 and placed near the sealing part, and finally sealed and cut by a welding cutting device to be finally shaped. The whole process neither needs to be grabbed by a special device nor needs to be adjusted in direction, so the process is less and the processing cost is low. The straight line segment can also be in a wave shape as shown in Figure 10 or a zigzag shape as shown in Figure 11.

[0046] The "trimming" process in this patent refers to cutting a joining member strip into a continuous body with a specific shape, not a discrete body. The "cutting" process refers to cutting the aforementioned continuous body into a special discrete body with two joining member sizes and free ends away from each other. The "welding and cutting" process refers to welding and cutting the aforementioned special discrete body after it is placed in the waist part to be sealed, so that the product is finally shaped.

[0047] As shown in Figure 2, in the unfolded state of the front waist part 21 and the rear waist part 22, a tear line 14 is formed in the area where the joining member 30 overlaps the front waist part 21 along the up-down direction of the front waist part 21. The tear line 14 includes a group of discontinuous cuts, as shown in Figure 4, which is a cross-sectional view of the cut of the tear line 14, and Figure 5 is a cross-sectional view of the connection between two adjacent cuts of the tear line 14. Preferably, the cuts are made on the application route of the front waist elastic member 23, and the front waist part 21 is provided with a front waist elastic member joint on the inner side of the tear line 14, which fixes the front waist elastic member to the outer sheet 201 and the inner sheet 202 of the front waist part 21. Here, the inner side refers to the side of the front waist part 21 away from the sealing part 40.

[0048] For convenience of description, the part of the front waist part 21 separated from the sealing part 40 after tearing along the tear line 14 is called the abdominal side contact part 211, and the part not separated from the sealing part 40 after tearing along the tear line 14 is called the non-separation part 212.

[0049] In the unfolded state of the front waist part 21 and the rear waist part 22, when the joining member 30 overlaps the front waist part 21, the distance from the joining part 31 to the fixed end 34 is greater than the distance from the tear line 14 to the fixed end 34, so as to ensure that the joining part 31 is joined to the abdominal side contact part 211. For the convenience of holding the free end of the joining member 30 for operation, the distance from the joining part 31 to the free end straight line segment 32 is not less than 5 mm, so as to ensure the convenience of holding and the strength required to open the joining part 31. At the same time, in order to control the eversion of the free end of the joining member 30, the distance from the joining part 31 to the free end straight line segment 32 is not greater than 40 mm.

[0050] The conventional adhesive bonding between the joint 31 and the joint member 30 is prone to cause the defect of edge lifting at the periphery of the joint 31. To ensure the reliability of the connection and avoid the above-mentioned defect, the joint 31 and the joint member 30 can be further fixed by compression bonding to make the combination of the two more compact, thereby forming a plurality of compression bonding points 35, as shown in FIG. 7. The compression bonding points can be distributed in the form of "dense at the top and bottom and sparse in the middle" on the joint 31; or can be uniformly distributed, as shown in FIG. 12.

[0051] The tear line 14 extends in the up-down direction of the disposable sanitary article from the upper edge to the lower edge of the front waist portion 21. To facilitate tearing from the upper edge or the lower edge of the front waist portion 21, the cutout at the uppermost end of the tear line 14 extends to the upper edge of the front waist portion 21, as shown in FIG. 6; and the cutout at the lowermost end of the tear line 14 extends to the lower edge of the front waist portion 21, as shown in FIG. 7. To improve the user experience, when the front waist portion 21 is torn along the tear line 14 and then reconnected by the joint member 30, the non-separation portion 212 is prevented from being folded and pressed against the skin of the human body, thereby avoiding the formation of pressure marks. The tear line 14 is as close as possible to the side edge of the front waist portion 21 in the left-right direction. Meanwhile, to facilitate hand operation, the tear line 14 is arranged to be away from the side edge of the front waist portion 21 by a distance of 2.5 mm to 20 mm, so that the tear line 14 will not be pressed by the hand holding the front waist portion 21 when the front waist portion 21 is sealed by the front waist portion sealing portion 40, thereby avoiding the phenomenon that the tear line 14 cannot be torn.

[0052] Example 2

[0053] As shown in FIG. 1, a pant-type absorbent article 1 has "an up-down direction", "a left-right direction" and "a front-rear direction" which intersect (orthogonal) with each other. In the up-down direction, a side corresponding to the waist of a wearer in a state where the pant-type absorbent article 1 is worn by the wearer is "an upper side", and a side corresponding to the crotch of the wearer is "a lower side". In the front-rear direction, a side corresponding to the abdominal side of the wearer in use is "a front side", and a side corresponding to the back side of the wearer is "a rear side". In addition, in a state where the pant-type absorbent article 1 is worn by the wearer, a side which comes into contact with the skin of the wearer is "a skin side", and an opposite side is "a non-skin side".

[0054] The pant-type absorbent article of the present embodiment includes: an absorbent body 10 for absorbing a body exudate; a waist member 20 which is stacked on the absorbent body 10 in the front-rear direction and includes a front waist portion 21 and a rear waist portion 22; and a pair of joint members 30 which are fixedly provided on both sides in the left-right direction of the front waist portion 21, and on which joint portions 31 are provided to be bonded to the front waist portion 21 by the joint portions 31.

[0055] The joining member 30 is a sheet-like structure, and one side edge thereof is fixed to the sealing portion 40 by any one of, but not limited to, adhesive bonding, heat 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 cooperates with the non-skin side of the front waist portion 21. As shown in Fig. 8, the free end of the joining member 30 is provided with straight line segments 32 arranged in the up-down direction, and curved line segments 33 extending in the left-right direction are provided between the upper and lower ends of the straight line segments 32 and the upper and lower ends of a fixed end 34. The straight line segments 32 are located in the middle of the joining member in the up-down direction, and the curved line segments 33 at the upper and lower ends of the straight line segments 32 are identical in shape and are irregular continuous curved line structures. A raised pull tab 331 is provided on the curved line segments 33 for easy gripping by a finger to tear the joining member.

[0056] To ensure the reliability of the joining of the joining portion 31 to the joining member 30, in addition to adhesive bonding, the joining portion 31 and the joining member 30 can also be fixed by pressing to make the joining of the two more secure, forming a plurality of press-bonding points 35. As shown in Fig. 13, the press-bonding points 35 are distributed in a design of "dense in the middle and sparse at the upper and lower ends" on the joining portion 31; or can be uniformly distributed, as shown in Fig. 12. As shown in Figs. 10-12, when the free ends of the two joining members 30 are horizontally close to each other to be tangent, the outer edges of the free ends of the two joining members 30 are all in line contact. Other than Embodiment 1.

[0057] Embodiment 3:

[0058] As shown in Fig. 1, a pant-type absorbent article 1 has "up-down direction", "left-right direction", and "front-rear direction" that intersect (orthogonal) with each other. In the up-down direction, in the state in which the pant-type absorbent article 1 is worn by a wearer, 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-rear direction, the side corresponding to the abdominal side of the wearer when in use is the "front side", and the side corresponding to the back side of the wearer is the "rear side". In addition, in the state in which the pant-type absorbent article 1 is worn by the wearer, the side in contact with the skin of the wearer is the "skin side", and the opposite side is the "non-skin side".

[0059] The pant-type absorbent article of this embodiment includes an absorbent body 10 for absorbing body exudates, a waist member 20 that is superimposed on the absorbent body 10 in the front-rear direction and includes a front waist portion 21 and a rear waist portion 22, and a pair of joining members 30 that are fixed to the left-right direction sides of the front waist portion 21 at one end and have a joining portion 31 provided on the joining member 30 to be bonded to the front waist portion 21 by the joining portion 31.

[0060] The joining member 30 is a sheet structure, one side of which is fixed on the sealing part 40 by any one of, but not limited to, adhesive bonding, heat pressing or ultrasonic welding. The other side of the joining member 30 relative to the fixed end is a free end, and the joining part 31 is arranged on the side of the joining member 30 which cooperates with the non-skin side of the front waist part 21. As shown in Fig. 9, the free end of the joining member 30 is provided with a straight line segment 32 arranged in the up-down direction, and the curve segment 33 extending in the left-right direction is arranged 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 lower middle part of the joining member 30 in the up-down direction, and the curve segments 33 at the upper and lower ends of the straight line segment 32 are different in shape, so that the whole joining member 30 has an asymmetric structure in the up-down direction. Specifically, the curve segment 33 at the upper end of the straight line segment 32 has an irregular continuous curve structure, the curve segment 33 at the lower end of the straight line segment 32 has a single arc curve structure, and the length of the curve segment 33 at the upper end is greater than that of the curve segment 33 at the lower end. In order to facilitate the fingers to pinch and tear the joining member, the curve segment 33 at the upper end is provided with a raised pull ear 331.

[0061] In order to ensure the reliability of the combination of the joining part 31 and the joining member 30, on the basis of adhesive fixing, the joining part 31 and the joining member 30 can also be fixed by pressing to make the combination of the two more close, forming a plurality of pressure bonding points 35. As shown in Fig. 14, the pressure bonding points 35 on the joining part 31 are distributed in the form of "dense in the middle and sparse in the upper and lower parts"; or can be uniformly distributed, as shown in Fig. 12. As shown in Fig. 14, when the free ends of the two joining members 30 horizontally approach to each other to be tangent, the outer contour of the free ends of the two joining members 30 is in a partial line contact state. Other same as embodiment 1.

[0062] The above has been described by way of example with reference to the drawings. Obviously, the specific implementation of the present application is not limited to the above. As long as various non-essential improvements are made by using the method concept and technical scheme of the present application; or without improvement, the above concept and technical scheme of the present application are directly applied to other occasions, which are within the protection scope of the present application.

Claims

1. An openable panty-type absorbent article comprising: Absorbent body; A waist member is superimposed on the absorbent body in the front-to-back direction, comprises a front waist portion and a rear waist portion, and is stretchable in the left-right direction; the left and right sides of the front waist portion are respectively joined to the left and right sides of the rear waist portion via a sealing portion, thereby forming a trouser-like structure; a joining member having fixed ends coupled to the non-skin side of the front waist portion on both sides in the left-right direction, and a joining portion coupled to the non-skin side of the front waist portion on a surface of the joining member that matches the non-skin side of the front waist portion, the joining portion being separable 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, wherein: 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, wherein: 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, wherein: The curved segment is in the shape of a circular arc or in the shape of a circular arc with multiple step structures.

5. The openable pant-type absorbent article according to claim 1, wherein: The joint component is formed through 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, wherein: 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, wherein: The joint portion is provided with press-fitting joint points which are press-fitted and fixed with the joint component.

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

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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