Pull-ups with wavy rubber string arrangement

Abstract

The utility model relates to the technical field of disposable absorption articles, and provides a pair of pull-ups with wavy rubber bands, which not only can reduce the compression of the pull-ups to improve the comfort level, but also can improve the wearing stability, and comprises a liquid-tight layer, an absorption core layer and a liquid-permeable layer, and the front waist part and the rear waist part of the liquid-tight layer are also provided with elastic wrapping layers; the elastic wrapping layer comprises an outer surface layer, an elastic layer and an inner surface layer; the elastic layer comprises at least two elastic plied yarn layers, namely a first elastic plied yarn layer and a second elastic plied yarn layer; the first elastic plied yarn layer is composed of a plurality of first elastic threads, the second elastic plied yarn layer is composed of a plurality of second elastic threads, and at least one of the first elastic threads and the second elastic threads is arranged in a wave shape; the first elastic lines on the first elastic plied yarn layer and the second elastic lines on the second elastic plied yarn layer are continuously and mutually staggered to form a plurality of four-direction tightening areas.

Description

Technical Field

[0001] The utility model relates to the technical field of disposable absorbent products, in particular to a pair of pull-up pants with wavy elastic bands. Background Art

[0002] The waistband of the pull-up pants is provided with an elastic wrapping layer, and the elastic wrapping of the elastic wrapping layer makes the pull-up pants close to the skin. The traditional elastic laminate is a three-layer structure, which is an inner layer, an elastic layer, and an outer layer from the inside to the outside. The rubber tendons of the elastic layer are straight rubber tendons, and the average spacing between the straight rubber tendons is large. In order to ensure the stability of wearing, large-diameter rubber tendons are generally used to prevent the pull-up pants from falling off due to activities or large amount of liquid absorption during wearing. The strands of the rubber tendons have high pressure and a small compression area, which will squeeze the body and cause concave marks on the body. Although these marks will make the skin red and itchy, affecting the wearing comfort, they also provide resistance to the fall of the pull-up pants and improve the wearing stability. There are both advantages and disadvantages.

[0003] In order to solve the problem of the elastic wrapping layer squeezing the body, this case is created. This case proposes a pull-up pants that can reduce the pressure of the pull-up pants and improve the comfort, and can also improve the wearing stability. Utility Model Content

[0004] Therefore, in order to solve the above-mentioned problems, the present invention proposes a pair of pull-up pants with a wavy elastic band arrangement, which can reduce the pressure of the pull-up pants and improve the comfort, and can also improve the wearing stability.

[0005] In order to solve the above technical problems, the solution adopted by the utility model is: a pull-up pants with wavy elastic arrangement, comprising a liquid-impermeable layer, an absorbent core layer, and a liquid-permeable layer arranged in sequence from the outside to the inside, and the front waist and the back waist of the liquid-impermeable layer are also provided with an elastic wrapping layer; the elastic wrapping layer comprises an outer layer, an elastic layer, and an inner layer; the elastic layer comprises at least two layers of elastic strand layers, namely a first elastic strand layer and a second elastic strand layer, the first elastic strand layer is arranged on the outer layer, and the second elastic strand layer is arranged on the inner layer; the first elastic strand layer is composed of a plurality of first elastic strands, and the second elastic strand layer is composed of a plurality of second elastic strands, and at least one of the first elastic strands and the second elastic strands is arranged in a wavy shape; all or part of the first elastic strands on the first elastic strand layer and all or part of the second elastic strands on the second elastic strand layer are continuously interlaced with each other to form a plurality of four-way tightening areas, and the areas of adjacent four-way tightening areas are the same or different;

[0006] Within the same arrangement distance, the average dtex value of the elastic line with a short arrangement length is less than or equal to the average dtex value of the elastic line with a long arrangement length at the same distance; the spacing between the first elastic lines is 1-12mm, the spacing between the second elastic lines is 1-12mm, and the minimum distance between the first elastic line and the adjacent second elastic line is 0-3mm.

[0007] A further improvement is that the bonding shapes between the first elastic thread and the second elastic thread and the inner layer and the outer layer are both continuous wave shapes, the crests and troughs of the first elastic thread and the second elastic thread are opposite, the first elastic thread on the first elastic strand layer and the second elastic thread on the second elastic strand layer correspond one to one and are continuously staggered to form an olive-shaped four-way tightening area.

[0008] Further improvements are: the bonding shape between the first elastic thread and the inner layer and the outer layer is a continuous wave shape, the bonding shape between the second elastic thread and the inner layer and the outer layer is a straight line shape, the first elastic thread on the first elastic strand layer and the second elastic thread on the second elastic strand layer correspond one to one and are continuously staggered to form a semi-olive-shaped four-way tightening area.

[0009] Further improvements are: the bonding shape between the first elastic thread and the inner layer and the outer layer is a continuous wave shape, the bonding shape between the second elastic thread and the inner layer and the outer layer is a straight line shape, the first elastic thread on the first elastic strand layer and the second elastic thread on the second elastic strand layer separated by at least one line are continuously staggered to form a semi-olive-shaped four-way tightening area.

[0010] A further improvement is that the bonding shape between the first elastic thread and the inner layer and the outer layer is a continuous wave shape, the bonding shape between the second elastic thread and the inner layer and the outer layer is a straight line shape, and the first elastic thread on the first elastic strand layer that is separated by at least one line and the second elastic thread on the second elastic strand layer are continuously staggered to form a semi-olive-shaped four-way tightening area.

[0011] A further improvement is that the distance between the wave crest and the wave trough of the wave shape is 3-8 mm.

[0012] A further improvement is that a first adhesive layer is provided on the outer layer and / or on the first elastic line.

[0013] A further improvement is that a second adhesive layer is provided on the inner layer and / or on the second elastic line.

[0014] By adopting the above technical solution, the beneficial effects of the utility model are:

[0015] The elastic line of the existing elastic wrapping layer is wrapped around the waist, and the elastic force is evenly pressed on the same circumference of the skin, with a small force area, causing the maximum deformation of the skin, resulting in marks on the skin. In the present case, all or part of the elastic lines on at least one layer of elastic strands are arranged in a wavy shape, which increases the width of the elastic pressure circumference of the elastic lines, increases the force-bearing area, weakens the circumference pressure, avoids squeezing the skin, and increases the comfort of wearing the pull-up pants; at the same time, when the pull-up pants are worn, after the elastic strands are stretched laterally, the distance between the left and right intersections of the four-way tightening area increases, forcing the distance between the first elastic line and the second elastic line inside the intersection to decrease, which not only relieves the lateral elastic force but also increases the longitudinal elastic force, so that the first elastic line and the second elastic line inside the left and right intersections can better hold the skin tightly and increase the resistance to longitudinal falling; when the pull-up pants absorb a large amount of liquid, the liquid-absorbing core of the pull-up pants stretches the waist of the pull-up pants downward, increases the downward pulling force on the pull-up pants, forces the four-way tightening area on the elastic layer to deform, increases the distance between the first elastic line and the second elastic line inside the left and right intersections, and at the same time causes the distance between the left and right intersections to decrease, converts the longitudinal stretch into a lateral wrapping force, and hinders the pull-up pants from falling as a whole.

[0016] The lateral elastic force and the longitudinal elastic force of the elastic wrapping layer can be transformed into each other and relieve each other, so as to achieve a dynamic balance of elastic pressure in the lateral and longitudinal directions, so that the elastic laminate can automatically adjust the pressure evenly and even the overall wrapping force of the elastic laminate, thereby improving the comfort of wearing the pull-up pants and enhancing the longitudinal anti-falling ability of the pull-up pants, so that the user can wear it comfortably when hungry or after a full meal.

[0017] The elastic pressure of the elastic wrapping layer at the same horizontal circumference in this case is alternating between strong and weak, so as to reduce the deformation amount of the skin at the same horizontal circumference, so that the skin at the same circumference can adapt well to the elastic pressure to deform, avoid the formation of marks, and improve the wearing comfort of the pull-up pants. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a first elastic strand layer and a second elastic strand layer in a pull-up pants with a wavy elastic arrangement according to an embodiment of the present invention.

[0019] Figure 2 It is a schematic structural diagram of a first elastic strand layer and a second elastic strand layer in a pull-up pants with a wavy elastic arrangement according to an embodiment of the present invention.

[0020] Figure 3 It is a schematic structural diagram of the first elastic strand layer and the second elastic strand layer in a pull-up pants with a wavy elastic arrangement according to the second embodiment of the present invention.

[0021] Figure 4It is a schematic structural diagram of the first elastic strand layer and the second elastic strand layer in a pull-up pants with a wavy elastic arrangement according to the second embodiment of the present invention.

[0022] Figure 5 It is a schematic structural diagram of the first elastic strand layer and the second elastic strand layer in a pull-up pants with a wavy elastic arrangement according to the third embodiment of the present invention.

[0023] Figure 6 It is a schematic structural diagram of the first elastic strand layer and the second elastic strand layer in a pull-up pants with a wavy elastic arrangement according to the fourth embodiment of the present invention. DETAILED DESCRIPTION

[0024] The utility model is now further described in conjunction with the accompanying drawings and specific embodiments. Example

[0025] refer to Figure 1 , disclosed in an embodiment of the utility model is a pair of pull-up pants with a wavy elastic band arrangement, including a liquid-impermeable layer, an absorbent core layer, and a liquid-permeable layer arranged in sequence from the outside to the inside, and an elastic wrapping layer is also arranged at the front waist and the back waist of the liquid-impermeable layer. The structure of the pull-up pants is a well-known structure, so it will not be described in detail here. The elastic wrapping layer includes an outer layer, an elastic layer, and an inner layer. The elastic layer includes two layers of elastic strand layers, namely a first elastic strand layer and a second elastic strand layer. The first elastic strand layer is arranged on the outer layer, and the second elastic strand layer is arranged on the inner layer; the first elastic strand layer is composed of a plurality of first elastic threads 11, and the second elastic strand layer is composed of a plurality of second elastic threads 12. At least one of the first elastic threads 11 and the second elastic threads 12 is arranged in a wavy shape. A first viscose layer is arranged on the outer layer and / or on the first elastic thread, and a second viscose layer is arranged on the inner layer and / or on the second elastic thread; all or part of the first elastic threads on the first elastic strand layer The first elastic thread 11 and all or part of the second elastic thread 12 on the second elastic strand layer are continuously interlaced with each other to form a plurality of closed four-way tightening areas 13 with complementary elastic forces in the transverse and longitudinal directions, and the areas of adjacent four-way tightening areas 13 are the same or different; the elastic forces on the first elastic thread 11 and the second elastic thread 12 at the left and right intersections of the four-way tightening areas 13 and inside the intersections are alternating in strength; the inner layer and the outer layer as well as the liquid-impermeable layer and the liquid-permeable layer can adapt to the transverse and longitudinal deformation of the elastic layer; within the same arrangement distance, the average dtex value of the elastic thread with a short arrangement length is less than or equal to the average dtex value of the elastic thread with a long arrangement length at the same distance, and the average dtex value of the first elastic thread 11 and the second elastic thread 12 are both 140.

[0026] The bonding shapes between the first elastic thread 11 and the second elastic thread 12 and the inner layer and the outer layer are both continuous waves, the crests and troughs of the first elastic thread 11 and the second elastic thread 12 are opposite, the first elastic thread 11 on the first elastic strand layer corresponds to the second elastic thread 12 on the second elastic strand layer, and continuously interlaced to form an olive-shaped four-way tightening area 13. The spacing between the crests and troughs of the wave shape is 3-8mm, preferably 6mm; the spacing between the first elastic threads 11 is 1-12mm, preferably 9mm; the spacing between the second elastic threads 12 is 1-12mm, preferably 9mm; the minimum distance between the first elastic thread 11 and the adjacent second elastic thread 12 is 0-3mm, preferably 3mm.

[0027] The distance between the elastic threads on a single-layer elastic strand layer is affected by the accuracy of the equipment. In one elastic thread arrangement, the minimum spacing of the elastic threads is controlled within 3 mm, which places high requirements on the equipment and is costly. In this embodiment, the elastic thread spacing of the entire elastic layer is reduced by double-layer lamination, thereby overcoming the technical problem that the spacing of the elastic threads on a single-layer elastic strand layer is difficult to reduce, so that the average decitex of the elastic threads can be further reduced, the elastic force on the elastic laminate can be more uniform, the manufacturing cost is controlled, and the customer's use cost is reduced; the setting of the four-way tightening zone 13 ensures that after the average decitex of the elastic thread is reduced, it can still ensure sufficient anti-falling effect and improve wearing stability.

[0028] Based on the above scheme, refer to Figure 2 , the adjacent four-way tightening areas 13 located in the same horizontal direction have different sizes of area, and the comfort of wearing the pull-up pants is improved by changing the strength of the wrapping elastic force; the spacing between the wave crests and troughs of the wave shape is 8mm, the spacing between the first elastic lines 11' is 8mm, the spacing between the second elastic lines 12' is 8mm, and the minimum distance between the first elastic line 11' and the adjacent second elastic line 12' is 0mm. The distance between the wave crests and troughs of the first elastic line 11' and the second elastic line 12' is large, and the anti-falling effect is good, but the lateral wrapping force will be relatively weak, so reducing the minimum distance between the first elastic line 11' and the adjacent second elastic line 12' to a minimum is conducive to strengthening the lateral wrapping force.

[0029] Figure 1 and Figure 2 compared to: Figure 1 and Figure 2 The elastic laminate formed by using the first elastic thread and the second elastic thread of the same average decitex has the same wrapping elastic force as a whole; Figure 1 The four-way tightening areas formed by the first elastic lines and the second elastic lines on the elastic layer have the same area, and the elastic force distribution of the formed elastic laminate is uniform; Figure 2The four-way tightening areas formed by the first elastic thread and the second elastic thread on the elastic layer are different in size, and the elastic force of the formed elastic laminate is alternating between strong and weak. Both are very comfortable to wear, but Figure 2 The elastic layer has a better anti-falling effect. Example

[0030] refer to Figure 3 The present invention discloses a pair of pull-up pants with wavy elastic bands, including a liquid-impermeable layer, an absorbent core layer, and a liquid-permeable layer arranged in sequence from the outside to the inside, and an elastic wrapping layer is also arranged at the front waist and the back waist of the liquid-impermeable layer. The structure of the pull-up pants is well-known, so it will not be described in detail here. The elastic wrapping layer includes an outer layer, an elastic layer, and an inner layer. The elastic layer includes two elastic strand layers, namely a first elastic strand layer and a second elastic strand layer. The first elastic strand layer is arranged on the outer layer, and the second elastic strand layer is arranged on the inner layer. The first elastic strand layer is composed of a plurality of first elastic threads 21, and the second elastic strand layer is composed of a plurality of second elastic threads 22. At least one of the first elastic threads 21 and the second elastic threads 22 is arranged in a wavy shape. A first viscose layer is arranged on the outer layer and / or on the first elastic threads, and a second viscose layer is arranged on the inner layer and / or on the second elastic threads. All or part of the first elastic threads 21 on the first elastic strand layer and all or part of the second elastic threads 22 on the second elastic strand layer are continuously interlaced with each other to form a plurality of closed four-dimensional elastic threads that can complement each other in the transverse and longitudinal directions. The four-way tightening area 23 is the same or different in size; the elastic force on the first elastic line 21 and the second elastic line 22 at the left and right intersections of the four-way tightening area 23 and the inside of the intersection is alternating in strength; the inner layer and the outer layer as well as the liquid-impermeable layer and the liquid-permeable layer can adapt to the lateral and longitudinal deformation of the elastic layer; within the same arrangement distance, the average dtex value of the elastic line with a short arrangement length is less than or equal to the average dtex value of the elastic line with a long arrangement length at the same distance, that is, the average dtex value of the second elastic line 22 is less than the average dtex value of the first elastic line 21, the average dtex of the first elastic line 21 is 140, the average dtex of the second elastic line 22 is 105, or the average dtex of the first elastic line 21 is 210, and the average dtex of the second elastic line 22 is 140, so as to reduce the pressure of the elastic lines on the same circumference and avoid the formation of strangulation marks during wearing.

[0031] The bonding shape between the first elastic line 21 and the inner layer and the outer layer is a continuous wave shape, the bonding shape between the second elastic line 22 and the inner layer and the outer layer is a straight line shape, the first elastic line 21 on the first elastic strand layer and the second elastic line 22 on the second elastic strand layer correspond one to one and are continuously staggered to form a semi-olive-shaped four-way tightening area 23, the areas of adjacent four-way tightening areas 23 are the same, and the elastic forces on the first elastic line and the second elastic line at the left and right intersections of the four-way tightening area and the interior of the intersections are alternating in strength.

[0032] The distance between the crest and the trough of the wave shape is 6 mm, the spacing between the first elastic lines 21 is 6 mm, the spacing between the second elastic lines is 6 mm, and the minimum distance between the first elastic line 21 and the adjacent second elastic line 22 is 3 mm. This embodiment reduces the spacing between the elastic lines by double-layer lamination, overcoming the technical problem that the spacing between the elastic lines on a single-layer elastic strand layer is difficult to reduce, so that the average decimeter of the elastic line can be further reduced, so that the elastic force on the elastic laminate can be more uniform.

[0033] Based on the above scheme, refer to Figure 4 The spacing between the wave crest and the wave trough is 4 mm, the spacing between the first elastic lines 21' is 7 mm, the spacing between the second elastic lines 22' is 7 mm, and the minimum distance between the first elastic line 21' and the adjacent second elastic line 22' is 3 mm.

[0034] Figure 3 and Figure 4 Compared to the elastic layer: Figure 3 The longitudinal deformable space ratio of the four-way tightening area 23 on the elastic layer is Figure 4 The larger the elastic force, the better the conversion effect between the lateral elastic force and the longitudinal elastic force. Example

[0035] refer to Figure 5The present invention discloses a pair of pull-up pants with wavy elastic bands, including a liquid-impermeable layer, an absorbent core layer, and a liquid-permeable layer arranged in sequence from the outside to the inside, and an elastic wrapping layer is also arranged at the front waist and the back waist of the liquid-impermeable layer. The structure of the pull-up pants is well-known, so it will not be described in detail here. The elastic wrapping layer includes an outer layer, an elastic layer, and an inner layer. The elastic layer includes two elastic strand layers, namely a first elastic strand layer and a second elastic strand layer. The first elastic strand layer is arranged on the outer layer, and the second elastic strand layer is arranged on the inner layer. The first elastic strand layer is composed of a plurality of first elastic threads 31, and the second elastic strand layer is composed of a plurality of second elastic threads 32. At least one of the first elastic threads 31 and the second elastic threads 32 is arranged in a wavy shape. A first viscose layer is arranged on the outer layer and / or on the first elastic threads, and a second viscose layer is arranged on the inner layer and / or on the second elastic threads. All or part of the first elastic threads 31 on the first elastic strand layer and all or part of the second elastic threads 32 on the second elastic strand layer are continuously interlaced with each other to form a plurality of closed four-dimensional elastic threads that can complement each other in the transverse and longitudinal directions. The four-way tightening area 33 is the same or different in size in size between adjacent four-way tightening areas 33; the elastic forces on the first elastic line 31 and the second elastic line 32 at the left and right intersections of the four-way tightening area 33 and the interior of the intersections are alternately strong and weak; the inner layer and the outer layer as well as the liquid-impermeable layer and the liquid-permeable layer can adapt to the lateral and longitudinal deformation of the elastic layer; within the same arrangement distance, the average dtex value of the elastic line with a short arrangement length is less than or equal to the average dtex value of the elastic line with a long arrangement length at the same distance, that is, the average dtex value of the second elastic line 32 is less than the average dtex value of the first elastic line 31, the average dtex of the first elastic line 31 is 140, the average dtex of the second elastic line 32 is 105, or the average dtex of the first elastic line 31 is 210, and the average dtex of the second elastic line 32 is 140, so as to reduce the strangulation of the elastic lines with the same circumference and avoid strangulation marks during wearing.

[0036] The bonding shape between the first elastic thread 31 and the inner layer and the outer layer is a continuous wave shape, the bonding shape between the second elastic thread 32 and the inner layer and the outer layer is a straight line shape, the first elastic thread 31 on the first elastic strand layer and the second elastic thread 32 on the second elastic strand layer, which are separated by one line, are continuously staggered to form a semi-olive-shaped four-way tightening area 33.

[0037] The spacing between the crests and troughs of the wave shape is 4mm, the spacing between the first elastic lines 31 is 8mm, the spacing between the second elastic lines is 3mm, and the minimum distance between the first elastic line 31 and the adjacent second elastic line 32 is 1mm. The spacing between the first elastic line 31 and the second elastic line 32 is reduced by double-layer lamination, so that the distribution of elastic lines on the elastic laminate can be more uniform, overcoming the technical problem that it is difficult to reduce the spacing between elastic lines on a single-layer elastic strand layer, so that the average decibels of the elastic lines can be further reduced, so that the elastic force on the elastic laminate can be more uniform, and at the same time, the number of four-way tightening areas 33 is reduced, which can be set accordingly according to the maximum urine absorption capacity of the pull-up pants absorbent core. Example

[0038] refer to Figure 6 The present invention discloses a pair of pull-up pants with wavy elastic bands, including a liquid-impermeable layer, an absorbent core layer, and a liquid-permeable layer arranged in sequence from the outside to the inside, and an elastic wrapping layer is also arranged at the front waist and the back waist of the liquid-impermeable layer. The structure of the pull-up pants is well-known, so it will not be described in detail here. The elastic wrapping layer includes an outer layer, an elastic layer, and an inner layer. The elastic layer includes at least two elastic strand layers, which are a first elastic strand layer and a second elastic strand layer. The first elastic strand layer is arranged on the outer layer, and the second elastic strand layer is arranged on the inner layer. The first elastic strand layer is composed of a plurality of first elastic threads 41, and the second elastic strand layer is composed of a plurality of second elastic threads 42. At least one of the first elastic threads 41 and the second elastic threads 42 is arranged in a wavy shape. A first adhesive layer is arranged on the outer layer and / or on the first elastic threads, and a second adhesive layer is arranged on the inner layer and / or on the second elastic threads. All or part of the first elastic threads 41 on the first elastic strand layer and all or part of the second elastic threads 42 on the second elastic strand layer are continuously interlaced with each other to form a plurality of closed elastically complementary threads in the transverse and longitudinal directions. The four-way tightening area 43 has the same or different areas of adjacent four-way tightening areas 43; the elastic forces on the first elastic line 41 and the second elastic line 42 at the left and right intersections of the four-way tightening area 43 and the interior of the intersections are alternately strong and weak; the inner layer and the outer layer as well as the liquid-impermeable layer and the liquid-permeable layer can adapt to the lateral and longitudinal deformation of the elastic layer; within the same arrangement distance, the average dtex value of the elastic line with a short arrangement length is less than or equal to the average dtex value of the elastic line with a long arrangement length at the same distance, that is, the average dtex value of the second elastic line 42 is less than the average dtex value of the first elastic line 41, the average dtex value of the first elastic line 41 is 140, the average dtex value of the second elastic line 42 is 105, or the average dtex value of the first elastic line 41 is 210, and the average dtex value of the second elastic line 42 is 140, so as to reduce the strangulation of the elastic lines with the same circumference and avoid strangulation marks during wearing.

[0039] The bonding shape between the first elastic thread 41 and the inner layer and the outer layer is a continuous wave shape, the bonding shape between the second elastic thread 42 and the inner layer and the outer layer is a straight line shape, and the first elastic thread 41 on the first elastic strand layer and the second elastic thread 42 on the second elastic strand layer are continuously staggered to form a semi-olive-shaped four-way tightening area 43.

[0040] The spacing between the crests and troughs of the wave shape is 6 mm, the spacing between the first elastic lines 41 is 4 mm, the spacing between the second elastic lines is 11 mm, and the minimum distance between the first elastic line 41 and the adjacent second elastic line 42 is 1 mm. The spacing between the first elastic line 41 and the second elastic line 42 is reduced by double-layer lamination, so that the distribution of elastic lines on the elastic laminate can be more uniform, overcoming the technical problem that it is difficult to reduce the spacing between elastic lines on a single-layer elastic strand layer, so that the average decibels of the elastic lines can be further reduced, so that the elastic force on the elastic laminate can be more uniform, and at the same time, the number of four-way tightening areas 43 is reduced, which can be set accordingly according to the maximum urine absorption capacity of the pull-up pants absorbent core.

[0041] Based on the technical solutions of the above-mentioned embodiments one to four: the elastic layer includes three or four elastic strand layers, namely a first elastic strand layer, a second elastic strand layer, a third elastic strand layer, and a fourth elastic strand layer, and the first elastic strand layer, the second elastic strand layer, the third elastic strand layer, and the fourth elastic strand layer are glued between the outer layer and the inner layer.

[0042] The basic principles, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which shall fall within the scope of the utility model to be protected. The scope of protection of the utility model shall be defined by the attached claims and their equivalents.

Claims

1. A pair of pull-up pants with wavy elastic bands, comprising a liquid-impermeable layer, an absorbent core layer, and a liquid-permeable layer arranged in sequence from the outside to the inside, characterized in that: The front waist and back waist of the liquid-impermeable layer are also provided with an elastic wrapping layer; the elastic wrapping layer includes an outer layer, an elastic layer, and an inner layer; the elastic layer includes at least two elastic strand layers, namely a first elastic strand layer and a second elastic strand layer, the first elastic strand layer is arranged on the outer layer, and the second elastic strand layer is arranged on the inner layer; the first elastic strand layer is composed of a plurality of first elastic threads, and the second elastic strand layer is composed of a plurality of second elastic threads, at least one of the first elastic threads and the second elastic threads is arranged in a wavy shape, and within the same arrangement distance, the average decitex value of the elastic threads with a short arrangement length is less than or equal to the average decitex value of the elastic threads with a long arrangement length at the same distance; all or part of the first elastic threads on the first elastic strand layer and all or part of the second elastic threads on the second elastic strand layer are continuously interlaced with each other to form a plurality of four-way tightening areas, and the area sizes of adjacent four-way tightening areas are the same or different.

2. The pull-up pants with wavy elastic arrangement according to claim 1, characterized in that: The spacing between the first elastic lines is 1-12 mm, the spacing between the second elastic lines is 1-12 mm, and the minimum distance between the first elastic line and the adjacent second elastic line is 0-3 mm.

3. The pull-up pants with wavy elastic arrangement according to claim 1, characterized in that: The bonding shapes between the first elastic thread and the second elastic thread and the inner layer and the outer layer are both continuous wave shapes, the crests and troughs of the first elastic thread and the second elastic thread are opposite, the first elastic thread on the first elastic strand layer corresponds to the second elastic thread on the second elastic strand layer one by one, and are continuously staggered to form an olive-shaped four-way tightening area.

4. The pull-up pants with wavy elastic arrangement according to claim 1, characterized in that: The bonding shape between the first elastic thread and the inner layer and the outer layer is a continuous wave shape, the bonding shape between the second elastic thread and the inner layer and the outer layer is a straight line shape, the first elastic thread on the first elastic strand layer and the second elastic thread on the second elastic strand layer correspond one to one and are continuously staggered to form a semi-olive-shaped four-way tightening area.

5. The pull-up pants with wavy elastic arrangement according to claim 1, characterized in that: The bonding shape between the first elastic thread and the inner layer and the outer layer is a continuous wave shape, the bonding shape between the second elastic thread and the inner layer and the outer layer is a straight line shape, the first elastic thread on the first elastic strand layer and the second elastic thread on the second elastic strand layer separated by at least one line are continuously staggered to form a semi-olive-shaped four-way tightening area.

6. The pull-up pants with wavy elastic arrangement according to claim 1, characterized in that: The bonding shape between the first elastic thread and the inner layer and the outer layer is a continuous wave shape, the bonding shape between the second elastic thread and the inner layer and the outer layer is a straight line shape, and the first elastic thread on the first elastic strand layer that is spaced apart by at least one first elastic thread and the second elastic thread on the second elastic strand layer are continuously staggered to form a semi-olive-shaped four-way tightening area.

7. The pull-up pants with wavy elastic arrangement according to claim 3, 4, 5 or 6, characterized in that: The distance between the wave crest and the wave trough of the wave shape is 3-8 mm.

8. The pull-up pants with wavy elastic arrangement according to claim 1 or 2 or 3 or 4 or 5 or 6, characterized in that: A first adhesive layer is arranged on the outer layer and / or on the first elastic line.

9. The pull-up pants with wavy elastic arrangement according to claim 1 or 2 or 3 or 4 or 5 or 6, characterized in that: A second adhesive layer is arranged on the inner layer and / or on the second elastic line.

Images