Polymer water-absorbing underpants and sewing process thereof

Abstract

The invention relates to the field of underpants, aims to solve the problem that liquid in a water absorption layer may permeate into an outer layer or even seep out of the outer layer due to the fact that the isolation effect between the water absorption layer and the outer layer in existing underpants is poor, and provides macromolecule water absorption underpants which comprise a near-skin layer, a functional layer and a far-skin layer which are sequentially stacked. The functional layer comprises a macromolecular water absorption layer and a waterproof layer; the macromolecular water absorption layer is connected with the near-skin layer in a sewing manner; the waterproof layer is connected with the near-skin layer and / or the far-skin layer in a sewing manner; the macromolecule water absorption layer is completely contained in the interlayer space between the skin approaching layer and the waterproof layer. After the macromolecule water absorption layer is combined with the underpants structure, human secretions and the like can be absorbed through the macromolecule water absorption layer; the macromolecule water absorption layer is completely contained in the interlayer space between the near-skin layer and the waterproof layer, the edges of the waterproof layer, the far-skin layer and the like are sewn together, and it can be avoided that when the waterproof layer is sewn, sewing holes of the waterproof layer are located in the covering face of the macromolecule water absorption layer, and the waterproof effect of the waterproof layer is affected.

Description

Technical Field

[0001] The invention relates to the field of underwear, in particular to a polymer water-absorbing underwear and a sewing process thereof. Background Art

[0002] For some users, such as women or bedridden patients, the absorbency and water retention of underwear are particularly important. When absorbent materials are incorporated into the structure of underwear, the liquid absorbed by the absorbent material may pass through the outer layer of the underwear, causing contamination and the spread of odor. Summary of the Invention

[0003] The purpose of the present invention is to provide a polymer absorbent underwear and its sewing process to solve the problem that the isolation effect between the absorbent layer and the outer layer in the existing underwear is poor, resulting in the liquid in the absorbent layer penetrating into the outer layer or even seeping out of the outer layer.

[0004] The embodiments of the present invention are achieved through the following technical solutions:

[0005] A polymer water-absorbing underwear, comprising: a skin-near layer, a functional layer and a skin-far layer stacked in sequence;

[0006] The functional layer includes: a polymer water-absorbing layer and a waterproof layer; the polymer water-absorbing layer is sewn to the skin-near layer; the waterproof layer is sewn to the skin-near layer and / or the skin-distal layer; the polymer water-absorbing layer is completely accommodated in the interlayer space between the skin-near layer and the waterproof layer.

[0007] Preferably, the functional layer further includes: an activated carbon layer, the activated carbon layer is provided on at least one side of the polymer water-absorbing layer, the activated carbon layer is sewn to the skin-near layer, and the activated carbon layer is completely accommodated in the interlayer space between the skin-near layer and the waterproof layer.

[0008] Preferably, the activated carbon layer is arranged on a side of the polymer water-absorbing layer away from the skin-near layer, and the activated carbon layer is connected to the skin-near layer.

[0009] Preferably, a gap is left between the edge of the polymer water-absorbing layer and / or the activated carbon layer and the edge of the skin-near layer.

[0010] Preferably, it comprises: an elastic band, wherein the elastic band, the skin-near layer, the waterproof layer and the skin-far layer are connected by lock-edge connection or hemming connection.

[0011] Preferably, it comprises: an underpants body, wherein the underpants body serves as a skin-distal layer or a skin-near layer, the functional layer is arranged at the crotch of the underpants body, and the side of the underpants body is provided with an easy-tear portion.

[0012] A sewing process for polymer absorbent underwear includes:

[0013] S100, sewing the skin-proximal layer, the polymer water-absorbing layer, and the activated carbon layer together to form a functional sheet using a first sewing line, wherein the distance between an edge of the skin-proximal layer and the first sewing line is greater than the distance between the edges of the polymer water-absorbing layer and the activated carbon layer and the first sewing line;

[0014] S200, after stacking the functional sheet, the waterproof layer and the skin-distal layer, they are connected by locking or hemming with a second sewing thread.

[0015] Preferably, the edge of the polymer water-absorbing layer and / or the activated carbon layer is located between the first sewing line and the second sewing line.

[0016] Preferably, the distance between the edge of the polymer water-absorbing layer and the first sewing line is greater than the distance between the edge of the activated carbon layer and the first sewing line.

[0017] Preferably, the resilience of the activated carbon layer is smaller than that of the skin-friendly layer, the skin-distal layer and the polymer water-absorbing layer; the skin-proximal layer, the polymer water-absorbing layer, the waterproof layer and the skin-distal layer are connected by lock-stitching or hemming through a second sewing line; the skin-proximal layer, the waterproof layer and the skin-distal layer are connected by lock-stitching or hemming through a third sewing line, and the third sewing line is located on the side of the second sewing line away from the first sewing line.

[0018] The present invention has at least the following beneficial effects:

[0019] After the polymer water-absorbing layer is combined with the underwear structure, the polymer water-absorbing layer can absorb human secretions and the like; after the waterproof layer isolates the polymer water-absorbing layer from the skin-distal layer, it can reduce or prevent secretions from penetrating into the skin-distal layer, causing contamination of the outer pants or spread of odor; the polymer water-absorbing layer is completely accommodated in the interlayer space between the skin-distal layer and the waterproof layer, and the edges of the waterproof layer and the skin-distal layer are sewn together, which can prevent the sewing holes in the waterproof layer from being located on the covering surface of the polymer water-absorbing layer when sewing the waterproof layer, thereby preventing the waterproof effect of the waterproof layer from being affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic diagram of the structure of polymer absorbent underwear;

[0022] Figure 2 is a schematic diagram of a first connection structure of a functional layer;

[0023] Figure 3 is a schematic diagram of the second connection structure of the functional layer;

[0024] Figure 4 Schematic diagram of the third connection structure of the functional layer;

[0025] Icon: 1-skin-near layer, 2-functional layer, 21-polymer water-absorbing layer, 22-waterproof layer, 23-activated carbon layer, 3-skin-far layer, 4-elastic band, 5-underwear body, 51-crotch, 52-easy-to-tear part, 6-first sewing line, 7-second sewing line, 8-third sewing line. DETAILED DESCRIPTION

[0026] In order to make the purpose, method scheme and advantages of the embodiments of the present invention clearer, the method scheme in the embodiments of the present invention is clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] Example 1: Figure 1-2 As shown, this embodiment provides a polymer water-absorbing underwear, comprising: a skin-near layer 1, a functional layer 2 and a skin-far layer 3 stacked in sequence;

[0028] The functional layer 2 includes: a polymer water-absorbing layer 21 and a waterproof layer 22; the polymer water-absorbing layer 21 is sewn to the skin-near layer 1; the waterproof layer 22 is sewn to the skin-near layer 1 and / or the skin-distal layer 3; the polymer water-absorbing layer 21 is completely accommodated in the interlayer space between the skin-near layer 1 and the waterproof layer 22.

[0029] In the specific implementation process, the polymer water-absorbing underwear provided in this embodiment can be used as disposable underwear, and the applicable population can be women or bedridden patients who cannot take care of themselves. Figure 1 As shown, the functional layer 2 can be set in the crotch 51 of the underwear, and the structure or material of the other parts of the underwear can refer to the existing technology. Since this embodiment does not improve the shape of the underwear, its basic shape and structure can be seen in Figure 1 shown.

[0030] The crotch area 51 is the primary area where human secretions (such as sweat and menstrual discharge) and urine may come into contact. Therefore, providing a moisture-absorbing layer in this location effectively absorbs these liquids, keeping the body dry, reducing dampness, and aiding in maintaining personal hygiene. This design helps prevent the growth of external bacteria, reduces the incidence of skin diseases, and also avoids discomfort and odor caused by a humid environment.

[0031] The water-absorbing and water-locking material in the polymer water-absorbing layer 21 can be FlexFoam liquid material, which is a new type of material composed of high molecular polymers with unique elasticity and water absorption. This material is liquefied through emulsification technology and has a porous form similar to memory foam. It can quickly absorb and lock liquid to prevent backseepage. The polymer water-absorbing layer 21 can set the FlexFoam liquid material between two layers of non-woven fabrics. The polymer layer composed of FlexFoam liquid material can be connected to the non-woven fabric by sewing, heat sealing and viscose. Among them, by spraying glue, the polymer layer and the non-woven fabric can be fully bonded, which can improve the connection stability between the two.

[0032] The skin-near layer 1 and the skin-far layer 3 can be made of pure cotton, etc., and the waterproof layer 22 can be made of PU and GORE-TEX, etc.

[0033] Since the applicant has set a polymer water-absorbing layer 21 in the underwear structure, and the water absorption and water-locking properties of the polymer water-absorbing layer 21 are ultimately limited, it is necessary to set a waterproof layer 22 between the polymer water-absorbing layer 21 and the distal skin layer 3. However, sewing holes will appear in the waterproof layer 22 during the sewing and fixing process. In order to reduce or avoid the influence of the sewing holes on its waterproof effect, in this embodiment, the waterproof layer 22 is not directly sewn together with the polymer water-absorbing layer 21, but the polymer water-absorbing layer 21 is first sewn to the proximal skin layer 1, and then a larger waterproof layer 22 is used to completely cover the polymer water-absorbing layer 21, and the waterproof layer 22 is sewn together with the proximal skin layer 1 and / or the distal skin layer 3 along the edge of the waterproof layer 22. At this time, the sewing holes on the waterproof layer 22 are located on the side of the polymer water-absorbing layer 21, and the liquid absorbed in the polymer water-absorbing layer 21 is difficult to seep out directly from the sewing holes, thereby reducing or avoiding the contamination of the outer pants and the spread of odor caused by secretions passing through the distal skin layer 3.

[0034] Example 2: In order to reduce the spread of odor and achieve effective antibacterial effect, improvements were made based on Example 1, such as Figure 2 As shown, in this embodiment, the functional layer 2 also includes: an activated carbon layer 23, and the activated carbon layer 23 is provided on at least one side of the polymer water-absorbing layer 21. The activated carbon layer 23 is sewn and connected to the skin-near layer 1, and the activated carbon layer 23 is completely accommodated in the interlayer space between the skin-near layer 1 and the waterproof layer 22.

[0035] During specific implementation, since the polymer water-absorbing layer 21 absorbs a large amount of secretions, its bacterial content will increase significantly in a short period of time. To ensure personal hygiene, it needs to be replaced at a certain frequency. In this embodiment, after adding the activated carbon layer 23 to the functional layer 2, it can rely on its extremely strong adsorption capacity to effectively absorb odors and also have an antibacterial effect. The antibacterial effect is achieved by adsorbing organic substances and other microbial metabolites that cause odors, which can indirectly reduce the opportunity for bacterial reproduction. In this embodiment, the waterproof layer 22 is not provided between the activated carbon layer 23 and the polymer water-absorbing layer 21 because the air permeability of the waterproof layer 22 is generally weak. After the waterproof layer 22 isolates the activated carbon layer 23 and the polymer water-absorbing layer 21, it may hinder the effective function of the activated carbon layer 23. In addition, after the activated carbon layer 23 is provided close to the polymer water-absorbing layer 21, if liquid passes through the polymer water-absorbing layer 21, the activated carbon layer 23 can also hinder the further diffusion of the liquid to a certain extent.

[0036] Example 3: In order to facilitate the sewing and fixing of the activated carbon layer 23, an improvement is made on the basis of Example 2, such as Figure 2 As shown, in this embodiment, the activated carbon layer 23 is provided on the side of the polymer water-absorbing layer 21 away from the skin-near layer 1 , and the activated carbon layer 23 is connected to the skin-near layer 1 .

[0037] In practice, the primary functions of the activated carbon layer 23 are adsorption and antibacterial properties. To ensure that this function is effective without affecting the effectiveness of the polymer water-absorbing layer 21, this embodiment places the activated carbon layer 23 on the side of the polymer water-absorbing layer 21 away from the skin-proximal layer 1. This ensures that the path of human secretions entering the polymer water-absorbing layer 21 is not blocked by the activated carbon layer 23, and odors primarily diffuse toward the skin-proximal layer 3. Thus, the activated carbon layer 23 can still effectively adsorb odors. The activated carbon layer 23 can be constructed by wrapping two layers of non-woven fabric around activated carbon fibers.

[0038] Because the activated carbon layer 23 is made of activated carbon fibers, it will inevitably be disturbed by external forces during wear, causing friction and other phenomena. This may cause the fibers and powder on the fibers to fall off. If this comes into direct contact with the wearer's body or outer pants, it may cause stains on the contact areas. Therefore, a dustproof layer can be provided on both sides of the activated carbon layer 23 to prevent it from affecting the human body and outer pants located on both sides of the activated carbon layer 23. The dustproof layer can be made of a PE mesh film, which not only prevents the passage of activated carbon fibers but also has good air permeability, ensuring that the activated carbon layer 23 can perform its deodorizing function while meeting the wearing comfort of the underwear.

[0039] If the activated carbon layer 23 is set closer to the human body, the liquid secreted by the human body will first pass through the activated carbon layer 23 and then enter the polymer water-absorbing layer 21. The secretions will occupy a large number of adsorption points of the activated carbon layer 23, and the deodorizing effect of the activated carbon layer 23 will be greatly reduced. In addition, the odorous gas that migrates from the polymer water-absorbing layer 21 toward the distal skin layer 3 will not be adsorbed by the activated carbon layer 23, which will also lead to poor deodorizing effect of the product.

[0040] Example 4: In order to better achieve full coverage of the polymer water-absorbing layer 21 and / or the activated carbon layer 23 by the waterproof layer 22, an improvement is made on the basis of Example 3, such as Figure 2 As shown, in this embodiment, a gap is left between the edge of the polymer water-absorbing layer 21 and / or the activated carbon layer 23 and the edge of the skin-near layer 1.

[0041] During specific implementation, if the edge of the polymer water-absorbing layer 21 or activated carbon layer 23 aligns with the near-skin layer 1, after the three are sewn together and then sewn together with the waterproof layer 22, it will be difficult for the waterproof layer 22 to completely cover the polymer water-absorbing layer 21 or activated carbon layer 23, thereby reducing the waterproof effect. Furthermore, when the near-skin layer 1, waterproof layer 22, and far-skin layer 3 are sewn together, if the polymer water-absorbing layer 21 or activated carbon layer 23 is added, the number of layers and thickness of the sewing area will increase, which can easily affect the final sewing effect, such as the appearance of more or larger wrinkles, affecting the wearing comfort of the underwear. Fibers in the activated carbon layer 23 may also be exposed at the edge of the sewing area, and the broken fibers or powdering of the activated carbon layer may affect the cleanliness of the underwear.

[0042] Example 5: In order to further improve the wearing comfort of underwear, improvements are made based on Examples 1-4, such as Figure 3-4 As shown, in this embodiment, it includes: an elastic band 4, and the elastic band 4, the skin-near layer 1, the waterproof layer 22 and the skin-far layer 3 are locked together or wrapped together.

[0043] In the specific implementation process, the elastic band 4 can be Figure 1 As shown, the elastic band 4 is arranged at the waist and thigh openings of the underwear. Since the functional layer 2 and other components in this embodiment are mainly arranged in the crotch 51, this embodiment mainly improves the arrangement of the elastic band 4 in the crotch 51. The waist elastic band 4 can be arranged according to the existing technology. After the elastic band 4 is arranged at the thigh opening, it can provide a moderate sense of firmness, ensuring that the underwear fits tightly to the body when worn and will not easily slide or shift. This is especially important for people who are active. The high-quality design of the elastic band 4 can avoid excessive pressure on the skin, reducing marks and discomfort. Good elastic materials can naturally expand and contract with body movements while ensuring a good fit, providing an all-day comfortable experience. The elastic band 4 helps to maintain the original shape of the underwear, prevent deformation caused by long-term wear, and reduce the impact of deformation or shifting on the effectiveness of the functional layer 2.

[0044] For example, Figure 3 As shown, the elastic band 4 is folded in half along its width direction, and the layered structure from the skin-near layer 1 to the skin-far layer 3 is clamped up and down, and then the edge is sewn.

[0045] For example, Figure 4 As shown, after the elastic band 4 is placed on the surface of the proximal skin layer 1 or the distal skin layer 3, it is sewn with the layered structure from the proximal skin layer 1 to the distal skin layer 3.

[0046] Example 6: In order to facilitate the use of disabled people, improvements are made on the basis of Example 5, such as Figure 1 As shown, in this embodiment, it includes: an underwear body 5, the underwear body 5 serves as the skin-distal layer 3 or the skin-proximal layer 1, the functional layer 2 is arranged in the crotch portion 51 of the underwear body 5, and the side of the underwear body 5 is provided with an easy-tear portion 52.

[0047] During the specific implementation process, it is cumbersome and laborious for disabled people to change their underwear. For example, for the elderly who are bedridden and cannot move independently, if the underwear needs to be taken off from top to bottom like conventional underwear, it is not only time-consuming and laborious, but the contaminated underwear may also come into contact with the elderly's lower body during the taking-off process, which is not conducive to keeping the body clean. Therefore, this embodiment provides an easy-tear portion 52 on the side of the underwear. When the underwear needs to be changed, the easy-tear portion 52 is torn open and the underwear can be taken off along the width of the human body.

[0048] The underwear body 5 can be a layer of pure cotton fabric, which can be sewn from a single piece of fabric or sewn from a front piece and a back piece. During the sewing process, the side of the underwear body 5 is one of the sewing areas. The sewing area formed after the side sewing connection can be torn by external force by reducing the number of threads or increasing the stitch length.

[0049] The easy-to-tear portion 52 may be Figure 1 As shown, it is set at the corresponding position of the crotch.

[0050] Example 7: Figure 3-4 As shown, this embodiment provides a sewing process for polymer absorbent underwear, comprising:

[0051] S100, sewing the skin-near layer 1, the polymer water-absorbing layer 21, and the activated carbon layer 23 together through a first sewing line 6 to form a functional sheet, wherein the distance between the edge of the skin-near layer 1 and the first sewing line 6 is greater than the distance between the edges of the polymer water-absorbing layer 21 and the activated carbon layer 23 and the first sewing line 6;

[0052] S200, after the functional sheet, the waterproof layer 22 and the skin-distal layer 3 are stacked, they are connected by locking or hemming with a second sewing line 7.

[0053] In the specific implementation process, the overall shape of the functional sheet is not specifically limited in this embodiment and can be set to be rectangular or similar. Figure 1 The shape of the crotch portion 51 is similar. This embodiment first sews the skin-near layer 1, the polymer water-absorbing layer 21 and the activated carbon layer 23 into one piece, rather than directly sewing the layers after they are all overlapped. This has at least the following advantages:

[0054] 1. There will not be a large number of visible sewing lines on the surface of the underwear, especially the sewing lines used to sew the functional layer 2, which has a better aesthetic appearance.

[0055] 2. If the activated carbon layer 23 is separated from the polymer water-absorbing layer 21, and the activated carbon layer 23 is lock-stitched together with other layer structures such as the waterproof layer 22, due to the poor elasticity of the activated carbon layer 23, in the process of flattening and sewing the layers of fabric, the layer structures with better elasticity, such as the skin-near layer 1 and the skin-far layer 3, will show a certain degree of extension. At this time, the elongation of the activated carbon layer 23 is relatively small. In the rebound process after sewing, the layer structures with better elongation will cause the activated carbon layer 23 to have larger wrinkles. Therefore, in this embodiment, the activated carbon layer 23, the polymer water-absorbing layer 21 and the skin-near layer 1 are first sewn into one, and then the lock-stitching is performed. In the lock-stitching process, the activated carbon layer 23 is not involved, so the degree of edge wrinkles is significantly reduced, thereby improving the wearing comfort of the underwear.

[0056] 3. Sewing each layer structure in batches makes it easier to fix the relative position of each layer structure. If all the layer structures are sewn together, the outer layer near the skin 1 and the outer layer far from the skin 3 need to completely cover the functional layer 2. At this time, the relative position of the fabric in the middle layer and the other layers of fabric is difficult to determine. Figure 3 As shown, when the skin-friendly layer 1, the polymer waterproof layer 22 and the activated carbon layer 23, which are of increasing sizes, are sewn first, the relative positions of the various hierarchical structures are easier to determine. Then the skin-friendly layer, the waterproof layer 22, the skin-distal layer 3 and the elastic band 4 are sewn into one body, wherein the edges of the skin-friendly layer, the waterproof layer 22 and the skin-distal layer 3 can be directly aligned, thereby making it easy to determine the relative positions. Finally, the accuracy of the position of the functional layer 2 of the product can be significantly improved, and there is no need to repeatedly adjust the position of each layer during the stacking process.

[0057] Example 8: In order to increase the overall comfort of the underwear, improvements were made based on Example 7. Figure 2 As shown, in this embodiment, the edge of the polymer water-absorbing layer 21 and / or the activated carbon layer 23 is located between the first sewing line 6 and the second sewing line 7 .

[0058] During the specific implementation process, the polymer water-absorbing layer 21 and / or the activated carbon layer 23 are not involved in the lock-edge or hemming sewing process, which can reduce the thickness of the hemming sewing area and reduce the degree of wrinkles, thereby increasing comfort. The edge of the polymer water-absorbing layer 21 is located between the first sewing line 6 and the second sewing line 7, so that the waterproof layer 22 can completely cover the polymer water-absorbing layer 21. The sewing holes on the waterproof layer 22 are also far away from the polymer water-absorbing layer 21, which has a better waterproof effect. The edge of the activated carbon layer 23 is located between the first sewing line 6 and the second sewing line 7, so that the movable space of the edge of the activated carbon layer 23 is small, and it is not easy for the flocs to break or powder to fall off due to friction. Even if the flocs break or powder falls off, the fibers or activated carbon powder are not easy to fall out of the middle layer of the underwear.

[0059] Example 9: In order to further prevent the activated carbon layer 23 from breaking or falling off to the outer layer of the underwear, an improvement is made based on Example 7 or 8, such as Figure 2-4 As shown, in this embodiment, the distance between the edge of the polymer water-absorbing layer 21 and the first sewing line 6 is greater than the distance between the edge of the activated carbon layer 23 and the first sewing line 6 .

[0060] During the specific implementation process, in this embodiment, there is no longer a need for a dustproof layer to prevent the activated carbon layer 23 from breaking or falling off to the outer layer of the underwear. Instead, the activated carbon layer 23 is clamped and covered by the polymer water-absorbing layer 21 and the waterproof layer 22, and the dustproof function is achieved by the polymer water-absorbing layer 21 and the waterproof layer 22, thereby reducing the setting of the dustproof layer, reducing economic costs, and simplifying the sewing process.

[0061] Example 10: In order to improve the dustproof effect of the polymer water-absorbing layer 21, improvements are made on the basis of Example 9, such as Figure 3-4 As shown, in this embodiment, the resilience of the activated carbon layer 23 is smaller than that of the skin-friendly layer, the skin-distal layer 3 and the polymer water-absorbing layer 21; the skin-proximal layer 1, the polymer water-absorbing layer 21, the waterproof layer 22 and the skin-distal layer 3 are connected by lock-stitching or hemming through the second sewing line 7; the skin-proximal layer 1, the waterproof layer 22 and the skin-distal layer 3 are connected by lock-stitching or hemming through the third sewing line 8, and the third sewing line 8 is located on the side of the second sewing line 7 away from the first sewing line 6.

[0062] During the specific implementation process, when the elasticity of the polymer water-absorbing layer 21, the near-skin layer 1 and the far-skin layer 3 is similar, the polymer water-absorbing layer 21 can be added during the lock-stitching or hemming sewing process, which will not excessively increase the degree of wrinkles in the lock-stitching or hemming area. After the sewing is completed, a structure in which the polymer water-absorbing layer 21 and the waterproof layer 22 completely cover the activated carbon layer 23 can be formed, which has a better dust-proof effect on the activated carbon layer 23.

[0063] In order to achieve full coverage of the polymer water-absorbing layer 21 by the waterproof layer 22, the present embodiment adds a third sewing line 8. After the polymer water-absorbing layer 21 is connected and fixed by the second sewing line 7, the edge of the polymer water-absorbing layer 21 is placed in the interlayer space between the first sewing line 6 and the third sewing line 8 through the third sewing line 8, thereby reducing or preventing the liquid absorbed by the polymer water-absorbing layer 21 from penetrating into the lock edge or hemming area.

[0064] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations are readily apparent to those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A polymer absorbent underwear, characterized in that: include: A skin-near layer (1), a functional layer (2) and a skin-distal layer (3) stacked in sequence; The functional layer (2) comprises: a polymer water-absorbing layer (21) and a waterproof layer (22); the polymer water-absorbing layer (21) is sewn together with the skin-near layer (1); the waterproof layer (22) is sewn together with the skin-near layer (1) and / or the skin-distal layer (3); the polymer water-absorbing layer (21) is completely accommodated in the interlayer space between the skin-near layer (1) and the waterproof layer (22).

2. The polymer water-absorbing underwear according to claim 1, characterized in that: The functional layer (2) further comprises: An activated carbon layer (23), wherein at least one side of the polymer water-absorbing layer (21) is provided with the activated carbon layer (23), the activated carbon layer (23) is sewn and connected to the skin-near layer (1), and the activated carbon layer (23) is completely accommodated in the interlayer space between the skin-near layer (1) and the waterproof layer (22).

3. The polymer water-absorbing underwear according to claim 2, characterized in that: The activated carbon layer (23) is arranged on a side of the polymer water-absorbing layer (21) away from the skin-near layer (1), and the activated carbon layer (23) is connected to the skin-near layer (1).

4. The polymer water-absorbing underwear according to claim 3, characterized in that: There is a gap between the edge of the polymer water-absorbing layer (21) and / or the activated carbon layer (23) and the edge of the skin-near layer (1).

5. The polymer water-absorbent underwear according to any one of claims 1 to 4, characterized in that: include: An elastic band (4), wherein the elastic band (4), the skin-near layer (1), the waterproof layer (22) and the skin-far layer (3) are connected by lock-edge connection or hemming connection.

6. The polymer water-absorbent underwear according to claim 5, characterized in that: include: The underwear body (5) serves as a skin-distal layer (3) or a skin-near layer (1), the functional layer (2) is arranged in the crotch portion (51) of the underwear body (5), and the side of the underwear body (5) is provided with an easy-tear portion (52).

7. A process for sewing polymer water-absorbent underwear according to any one of claims 2 to 6, characterized in that: include: S100, sewing the skin-near layer (1), the polymer water-absorbing layer (21) and the activated carbon layer (23) into a functional sheet through a first sewing line (6), wherein the distance between the edge of the skin-near layer (1) and the first sewing line (6) is greater than the distance between the edges of the polymer water-absorbing layer (21) and the activated carbon layer (23) and the first sewing line (6); S200, after the functional sheet, the waterproof layer (22) and the skin-distal layer (3) are stacked, they are connected by locking or hemming with a second sewing line (7).

8. The sewing process according to claim 7, characterized in that: The edge of the polymer water-absorbing layer (21) and / or the activated carbon layer (23) is located between the first sewing line (6) and the second sewing line (7).

9. The sewing process according to claim 7 or 8, characterized in that: The distance between the edge of the polymer water-absorbing layer (21) and the first sewing line (6) is greater than the distance between the edge of the activated carbon layer (23) and the first sewing line (6).

10. The sewing process according to claim 9, characterized in that: The resilience of the activated carbon layer (23) is smaller than that of the skin-friendly layer, the skin-distal layer (3) and the polymer water-absorbing layer (21); the skin-friendly layer (1), the polymer water-absorbing layer (21), the waterproof layer (22) and the skin-distal layer (3) are connected by lock-stitching or hemming via a second sewing line (7); the skin-friendly layer (1), the waterproof layer (22) and the skin-distal layer (3) are connected by lock-stitching or hemming via a third sewing line (8), and the third sewing line (8) is located on the side of the second sewing line (7) away from the first sewing line (6).

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