Double-layer water-conducting nonwoven fabric and diapers based on kiwano fiber

Abstract

The invention discloses a double-layer water-conducting nonwoven fabric based on caltrop fiber, wherein the nonwoven fabric comprises a caltrop fiber mesh layer and a hydrophilic fiber mesh layer; the thickness of the caltrop fiber mesh layer accounts for 2 / 5-1 / 2 of the total thickness of the nonwoven fabric, and the thickness of the hydrophilic fiber mesh layer accounts for 1 / 2-3 / 5 of the total thickness of the nonwoven fabric; the length of the embedded section of the second caltrop fiber bundle in the caltrop fiber mesh layer embedded in the hydrophilic fiber mesh layer is 3 / 10-1 / 2 of the thickness of the hydrophilic fiber mesh layer; the length of the embedded section of the hydrophilic fiber bundle in the hydrophilic fiber mesh layer embedded in the caltrop fiber mesh layer is 3 / 10-1 / 2 of the thickness of the caltrop fiber mesh layer; the length of the embedded section of the first caltrop fiber bundle in the caltrop fiber mesh layer embedded in the hydrophilic fiber mesh layer is 3 / 5-7 / 10 of the thickness of the hydrophilic fiber mesh layer. The invention also discloses a multi-layer antibacterial one-way water-conducting diaper. The present invention utilizes the structure of the nonwoven fabric and the characteristics of the material itself to achieve the effect of strong forward water conduction ability and weak reverse water conduction ability, and endows the nonwoven fabric with the function of preventing reverse penetration.

Description

Technical Field

[0001] The invention relates to the technical field of nonwoven textiles, in particular to a double-layer water-conducting nonwoven fabric and a diaper based on scoparia fiber. Background Art

[0002] Diapers are daily necessities commonly used by babies. They are a general term for diapers, diapers, and pull-up pants. Dry diapers can keep babies sleeping all night long. Due to their strong water absorption, they are commonly known as "diapers".

[0003] Among them, polymer water-absorbent resin (polymer SAP for short) is an excellent material for making baby diapers. It is made of starch and acrylate as the main raw materials.

[0004] The diapers in the prior art, such as the high-efficiency antibacterial and anti-reverse osmosis diapers containing nanosilver disclosed in patent application 201710847919.8, include a skin-friendly layer (surface layer), an absorbent core layer (including a polymer absorbent resin), and a leak-proof bottom film (bottom layer); wherein the skin-friendly layer is mostly non-woven fabric.

[0005] One-way water-conducting fabrics are common types of nonwoven materials. The side in contact with the skin remains dry, and the other side can absorb and retain water, thereby achieving one-way water conduction. The Chinese patent application authorization announcement number is CN2331362Y, and the announcement date is August 4, 1999. The name of the invention is a dry surface, one-way permeable fiber mesh fabric for sanitary products. The application discloses a dry surface, one-way permeable fiber mesh fabric for sanitary products. The fabric is composed of a polymer material layer sandwiched between a hydrophobic fiber layer and a hydrophilic fiber layer, which is bonded or pressed together. The permeation holes on the hydrophobic layer are processed into various shapes and arranged in a certain pattern. Its shortcomings are: the key to achieving one-way permeability of the fabric lies in the polymer material layer in the middle, and the product puts great pressure on the environmental protection after use and disposal.

[0006] Gastrodia fiber, also known as tree cotton fiber in commercial name, is an original fiber discovered in recent years. It belongs to fruit fiber. The fiber is light yellow, has a soft silky luster, and feels soft and smooth. Gastrodia is planted in barren areas of tropical and subtropical regions. It is a perennial plant that blooms and bears fruit all year round and can be harvested multiple times a year. The planting cost is lower than that of cotton, and it is an economic crop with wide planting value. Gastrodia fiber has high lignin and hemicellulose content, similar to wood hydrophilic fiber. The cross section is round or oval, with thin fiber wall, large hollow tube wall, and hollowness of more than 80%; the longitudinal direction is cylindrical, smooth, and does not turn. The fiber length is 20.0mm-40.5mm, and the linear density is about 0.93dtex. The fiber density is low, only 0.4-0.5 times that of cotton. The breaking strength is 4.45cN / dtex, and the elongation at break is 3.40%. The mass fraction of lignin in caltrop fiber is about 23%, cellulose is about 64%, wax is about 2%-3%, and ash is about 1.2%-1.8%. The moisture regain of caltrop fiber is higher than cotton and has good hygroscopicity. Under the condition of secondary standard atmosphere, the moisture regain is 13.49%. However, because caltrop fiber contains lignin and wax, the fiber surface also has excellent hydrophobic-lipophilic properties. One gram of caltrop fiber absorbs 20 grams of organic solvents or oils. Caltrop fiber also has certain antibacterial properties, with an anti-Staphylococcus aureus rate of 99%, and also has antibacterial activity against Gram-negative bacteria.

[0007] There are also public reports on the use of kiwano fiber to prepare nonwoven fabrics. The Chinese patent application publication number is CN102071538A, and the announcement date is May 25, 2011. The name of the invention is kiwano antibacterial shaping cotton. The application discloses a kiwano antibacterial shaping cotton. The weight percentage of the shaping cotton component is: kiwano fiber 60%-100%, low melting point fiber 0%-40%; or kiwano fiber 40%-50%, cotton fiber 10%-20%, silk fiber or wool fiber 30%-40%. After air-laid, it is heat-set and formed. Its disadvantage is that the prepared kiwano shaping cotton is prepared by heat setting. Regardless of whether there is low melting point fiber in the technical solution, the hydrophilic and hydrophobic properties of both sides of the nonwoven fabric are consistent, and the hydrophobic and lipophilic characteristics of kiwano fiber cannot be brought into play.

[0008] In addition, the traditional double-layer nonwoven fabric is in the form of fiber bundles embedded from top to bottom. When the hydrophilic fiber layer contacts the super absorbent material, the hydrophilic fiber bundle will form a water-conducting channel to directly guide the water to the super absorbent material. The direction of water flowing from the water-repellent fiber to the cotton fiber is positive water conduction. Super absorbent materials generally contain a large number of active hydroxyl groups. After the active hydroxyl groups contact water, they will form hydrogen bonds. This water absorption method is called chemical water absorption. Due to the effect of hydrogen bonding force, the way hydroxyl groups adsorb water molecules is divided into two categories: one type of water molecules directly interacts with hydroxyl groups, and the other type of water molecules indirectly interacts with hydroxyl groups. Water molecules directly connected to hydroxyl groups are easily locked by hydrogen bonding force and are not easy to fall off. When subjected to external forces, the indirectly acting water molecules are easy to detach, thereby forming free liquid water. When there is no external force, the highly absorbent material has a strong ability to lock in water; when there is an external force, the indirectly adsorbed water molecules will be detached first to form liquid free water, which will penetrate into the hydrophobic fiber surface of the water-repellent fiber mesh layer through the hydrophilic fiber bundles. The movement of water from the absorbent fiber to the water-repellent fiber is called reverse water conduction, and reverse osmosis occurs after reverse water conduction. Summary of the invention

[0009] In view of the above-mentioned problems, the object of the present invention is to provide a double-layer water-conducting nonwoven fabric and diaper based on Cynanchum oleiferum fibers.

[0010] In order to achieve the above purpose, the technical solution is: a double-layer water-conducting nonwoven fabric based on kiwano fiber, the nonwoven fabric comprising a kiwano fiber web layer and a hydrophilic fiber web layer;

[0011] The melon fiber mesh layer is a water-conducting layer, and the hydrophilic fiber mesh layer is a water-absorbing layer; the thickness of the melon fiber mesh layer accounts for 2 / 5-1 / 2 of the total thickness of the non-woven fabric, and the thickness of the hydrophilic fiber mesh layer accounts for 1 / 2-3 / 5 of the total thickness of the non-woven fabric; the length of the embedded section of the second melon fiber bundle in the melon fiber mesh layer embedded in the hydrophilic fiber mesh layer is 3 / 10-1 / 2 of the thickness of the hydrophilic fiber mesh layer; the length of the embedded section of the hydrophilic fiber bundle in the hydrophilic fiber mesh layer embedded in the melon fiber mesh layer is 3 / 10-1 / 2 of the thickness of the melon fiber mesh layer; the length of the embedded section of the first melon fiber bundle in the melon fiber mesh layer embedded in the hydrophilic fiber mesh layer is 3 / 5-7 / 10 of the thickness of the hydrophilic fiber mesh layer.

[0012] Preferably, the thickness of the melon fiber web layer accounts for 9 / 20 of the total thickness of the non-woven fabric, and the thickness of the hydrophilic fiber web layer accounts for 11 / 20 of the total thickness of the non-woven fabric; the length of the embedded section of the second melon fiber bundle in the melon fiber web layer embedded in the hydrophilic fiber web layer is 2 / 5 of the thickness of the hydrophilic fiber web layer; the length of the embedded section of the hydrophilic fiber bundle in the hydrophilic fiber web layer embedded in the melon fiber web layer is 2 / 5 of the thickness of the melon fiber web layer; the length of the embedded section of the first melon fiber bundle in the melon fiber web layer embedded in the hydrophilic fiber web layer is 13 / 20 of the thickness of the hydrophilic fiber web layer.

[0013] Preferably, the hydrophilic fiber is cotton fiber.

[0014] The present invention also discloses a multi-layer antibacterial one-way water-conducting diaper, which comprises, in order from near to far from the skin, a double-layer water-conducting nonwoven fabric, a water-absorbing core layer, a bottom film, and a protective enclosure; the bottom film, the water-absorbing core layer, the double-layer water-conducting nonwoven fabric, and the protective enclosure are glued to form a cavity structure, and the water-absorbing core layer is coated in the cavity structure;

[0015] The double-layer water-conducting nonwoven fabric includes, in order from near to far, a melon fiber mesh layer and an antibacterial fiber mesh layer;

[0016] The melon fiber mesh layer is a water-conducting layer, and the antibacterial fiber mesh layer is a water-absorbing layer; the thickness of the melon fiber mesh layer accounts for 2 / 5-1 / 2 of the total thickness of the non-woven fabric, and the thickness of the antibacterial fiber mesh layer accounts for 1 / 2-3 / 5 of the total thickness of the non-woven fabric; the length of the embedded section of the second melon fiber bundle in the melon fiber mesh layer embedded in the antibacterial fiber mesh layer is 3 / 10-1 / 2 of the thickness of the antibacterial fiber mesh layer; the length of the embedded section of the antibacterial fiber bundle in the antibacterial fiber mesh layer embedded in the melon fiber mesh layer is 3 / 10-1 / 2 of the thickness of the melon fiber mesh layer; the length of the embedded section of the first melon fiber bundle in the melon fiber mesh layer embedded in the antibacterial fiber mesh layer is 3 / 5-7 / 10 of the thickness of the antibacterial fiber mesh layer.

[0017] Preferably, the antibacterial fiber is jute fiber.

[0018] Preferably, the antibacterial fiber is natural bamboo fiber.

[0019] Preferably, the skin-friendly layer is a polylactic acid fiber mesh layer.

[0020] Preferably, the thickness of the melon fiber mesh layer accounts for 9 / 20 of the total thickness of the non-woven fabric, and the thickness of the antibacterial fiber mesh layer accounts for 11 / 20 of the total thickness of the non-woven fabric; the length of the embedded section of the second melon fiber bundle in the melon fiber mesh layer embedded in the antibacterial fiber mesh layer is 2 / 5 of the thickness of the antibacterial fiber mesh layer; the length of the embedded section of the antibacterial fiber bundle in the antibacterial fiber mesh layer embedded in the melon fiber mesh layer is 2 / 5 of the thickness of the melon fiber mesh layer; the length of the embedded section of the first melon fiber bundle in the melon fiber mesh layer embedded in the antibacterial fiber mesh layer is 13 / 20 of the thickness of the antibacterial fiber mesh layer.

[0021] When the water-absorbing core layer is subjected to external force, part of the water becomes free liquid water, and part of it is absorbed by the hydrophilic fiber layer. Since there is no kiwi fiber bundle in the hydrophilic fiber of the nonwoven fabric of the present invention, the hydrophilic fiber of this part absorbs water first, and after absorbing enough, it is transferred to the hydrophilic fiber layer containing kiwi fiber bundle. The hydrophilic fiber layer containing kiwi fiber bundle is divided into two levels. The content of kiwi fiber bundle in the second level is the highest, and the water-conducting capacity of the second level is also higher than that of the first level. At this time, the potential energy of reverse osmosis of water has been weakened by the cotton fiber layer without kiwi fiber bundle in contact with the highly absorbent material. When the water reaches the first level, the hydrophilic fiber further absorbs water to weaken the potential energy of reverse osmosis. When the water continues to transfer to the kiwi fiber layer, the potential energy of water absorption in the direction of water travel becomes weaker and weaker. When it reaches the kiwi fiber layer, due to the water absorption performance characteristics of the kiwi fiber itself, the reverse osmosis potential energy is further weakened. A state is formed in which the reverse water conduction performance is significantly lower than the forward water conduction performance, so the reverse osmosis ability is worse than the forward osmosis ability.

[0022] The advantages of the present invention are:

[0023] (1) The present invention changes the embedding form of the upper and lower layers without changing the double-layer structure of the traditional double-layer nonwoven fabric. The embedding method adopted by the present invention is that the upper and lower layers are embedded in each other. The fiber bundles formed by the kiwi fiber mesh layer only reach a part of the depth of the hydrophilic fibers and do not penetrate; the fiber bundles formed by the hydrophilic fiber mesh layer also only reach a part of the depth of the kiwi fiber mesh layer fibers and do not penetrate. When the hydrophilic layer contacts the highly absorbent material, there is no straight-through permeation channel, which improves the reverse osmosis capacity of the nonwoven fabric.

[0024] (2) The hydrophilic fiber bundles of the hydrophilic fiber mesh layer of the present invention do not directly reach the outer surface of the melon fiber mesh layer, so the free water has no direct passage to the outer surface of the melon fiber mesh layer, which creates a certain resistance to the reverse osmosis of the free water to the outer surface of the melon fiber mesh layer.

[0025] (3) The kiwi fiber in the kiwi fiber mesh layer has typical hydrophobic properties, and the fiber is fine and has strong capillary water conduction capacity. Therefore, the kiwi fiber has good water conduction performance and the surface can remain dry. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the nonwoven fabric after one mechanical reinforcement in Example 1 of the present invention.

[0027] Figure 2 This is a schematic diagram of the structure of the nonwoven fabric after secondary mechanical reinforcement in Example 1 of the present invention.

[0028] Figure 3 This is a schematic diagram of the structure of the nonwoven fabric after three mechanical reinforcements in Example 1 of the present invention.

[0029] Figure 4 It is a schematic diagram of the structure of the present invention for comparison.

[0030] Figure 5 It is a schematic diagram of the structure of a diaper in an embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0033] Example 1

[0034] like Figure 1 As shown, this embodiment discloses a double-layer water-conducting nonwoven fabric based on caltrop fiber, which is formed by laying a double-layer fiber mesh layer of caltrop and cotton, the thickness of the caltrop fiber mesh layer 1 accounts for 2 / 5 of the total thickness of the nonwoven fabric, and the thickness of the cotton fiber mesh layer 2 accounts for 3 / 5 of the total thickness of the nonwoven fabric; the mechanical reinforcement direction is from the caltrop fiber mesh layer 1 to the cotton fiber mesh layer 2, and the second caltrop fiber bundle 3 in the caltrop fiber mesh layer 1 is embedded in the cotton fiber mesh layer 2, and the embedding length of the second caltrop fiber bundle 3 is 3 / 10 of the thickness of the cotton fiber mesh layer 2, completing one mechanical reinforcement; as shown Figure 2As shown, the double-layer fiber web after the primary mechanical reinforcement is reinforced in the direction from the cotton fiber web layer 2 to the kiwi fiber web layer 1, and the cotton fiber bundle 4 in the cotton fiber web layer 2 is embedded in the kiwi fiber web layer 1, and the length of the embedded section of the cotton fiber bundle 4 is 3 / 10 of the thickness of the kiwi fiber web layer 1, thereby completing the secondary mechanical reinforcement; Figure 3 As shown, the double-layer fiber web after secondary mechanical reinforcement is reinforced from the kiwi fiber web layer 1 to the cotton fiber web layer 2, and the first kiwi fiber bundle 5 in the kiwi fiber web layer 1 is embedded in the cotton fiber web layer 2. The length of the embedded section of the first kiwi fiber bundle 5 is 3 / 5 of the thickness of the cotton fiber web layer 2, completing the third mechanical reinforcement. The mechanical reinforcement method of this embodiment is hydroentanglement reinforcement.

[0035] The evaluation of the reverse osmosis effect of nonwoven fabrics is shown in Table 1.

[0036] Example 2

[0037] The present embodiment discloses a double-layer water-conducting nonwoven fabric based on caltrop fiber, wherein a double-layer fiber web layer of caltrop and cotton is formed by laying a web, wherein the thickness of the caltrop fiber web layer accounts for 1 / 2 of the total thickness of the nonwoven fabric, and the thickness of the cotton fiber web layer accounts for 1 / 2 of the total thickness of the nonwoven fabric; the mechanical reinforcement direction is from the caltrop fiber web layer to the cotton fiber web layer, and the second caltrop fiber bundle in the caltrop fiber web layer is embedded in the cotton fiber web layer, and the length of the embedded section of the second caltrop fiber bundle is 1 / 2 of the thickness of the cotton fiber web layer, thus completing one mechanical reinforcement; after one mechanical reinforcement, the caltrop fiber bundle is embedded in the cotton fiber web layer, and the second caltrop fiber bundle ... The double-layer fiber net is reinforced in the direction from the cotton fiber net layer to the kiwi fiber net layer, and the cotton fiber bundle in the cotton fiber net layer is embedded in the kiwi fiber net layer, and the length of the cotton fiber bundle embedded section is 1 / 2 of the thickness of the kiwi fiber net layer, completing the secondary mechanical reinforcement; the double-layer fiber net after the secondary mechanical reinforcement is reinforced in the direction from the kiwi fiber net layer to the cotton fiber net layer, and the first kiwi fiber bundle in the kiwi fiber net layer is embedded in the cotton fiber net layer, and the length of the first kiwi fiber bundle embedded section is 7 / 10 of the thickness of the cotton fiber net layer, completing the third mechanical reinforcement. The mechanical reinforcement method of this embodiment is hydroentanglement reinforcement.

[0038] The evaluation of the reverse osmosis effect of nonwoven fabrics is shown in Table 1.

[0039] Example 3

[0040] The present embodiment discloses a double-layer water-conducting nonwoven fabric based on caltrop fiber, wherein a double-layer fiber web layer of caltrop and cotton is formed by laying a web, wherein the thickness of the caltrop fiber web layer accounts for 9 / 20 of the total thickness of the nonwoven fabric, and the thickness of the cotton fiber web layer accounts for 11 / 20 of the total thickness of the nonwoven fabric, and the mechanical reinforcement direction is from the caltrop fiber web layer to the cotton fiber web layer, and the second caltrop fiber bundle in the caltrop fiber web layer is embedded in the cotton fiber web layer, and the length of the embedded section of the second caltrop fiber bundle is 2 / 5 of the thickness of the cotton fiber web layer; after one mechanical reinforcement, The double-layer fiber net is reinforced in the direction from the cotton fiber net layer to the kiwi fiber net layer 1, and the cotton fiber bundle in the cotton fiber net layer is embedded in the kiwi fiber net layer, and the length of the embedded section of the cotton fiber bundle 5 is 2 / 5 of the thickness of the kiwi fiber net layer; the double-layer fiber net after secondary mechanical reinforcement is reinforced in the direction from the kiwi fiber net layer to the cotton fiber net layer, and the first kiwi fiber bundle in the kiwi fiber net layer is embedded in the cotton fiber net layer, and the length of the embedded section of the first kiwi fiber bundle is 13 / 20 of the thickness of the cotton fiber net layer, completing three mechanical reinforcements. The mechanical reinforcement method of this embodiment is acupuncture reinforcement.

[0041] The evaluation of the reverse osmosis effect of nonwoven fabrics is shown in Table 1.

[0042] Of course, the cotton fiber of the present invention can also be replaced by antibacterial fibers such as jute fiber and natural bamboo fiber, which should also be within the protection scope of the present invention.

[0043] In order to further compare the technical effects of the present invention, corresponding comparison samples 1, comparison samples 2 and comparison samples 3 are prepared corresponding to Example 1, Example 2 and Example 3 respectively to compare the effects.

[0044] Comparative Example 1

[0045] After laying, a double-layer fiber web of kiwifruit and cotton is formed, the thickness of kiwifruit fiber web layer 1 accounts for 2 / 5 of the total thickness of the nonwoven fabric, and the thickness of cotton fiber web layer 2 accounts for 3 / 5 of the total thickness of the nonwoven fabric; the mechanical reinforcement method is hydroentanglement reinforcement, and it undergoes mechanical reinforcement once, twice and three times in sequence, the mechanical reinforcement direction is consistent, and the mechanical reinforcement depth is through reinforcement. The prepared sample is the original sample 1 for comparison.

[0046] Comparative Example 2

[0047] After laying, a double-layer fiber web of kiwifruit and cotton is formed, the thickness of kiwifruit fiber web layer 1 accounts for 1 / 2 of the total thickness of the nonwoven fabric, and the thickness of cotton fiber web layer 2 accounts for 1 / 2 of the total thickness of the nonwoven fabric; the mechanical reinforcement method is hydroentanglement reinforcement, and it is successively reinforced once, twice and three times, the mechanical reinforcement direction is consistent, and the mechanical reinforcement depth is through reinforcement. The prepared sample is the comparison original sample 2.

[0048] Comparative Example 3

[0049] After laying, a double-layer fiber mesh of kiwifruit and cotton is formed, the thickness of kiwifruit fiber mesh layer 1 accounts for 9 / 20 of the total thickness of the nonwoven fabric, and the thickness of cotton fiber mesh layer 2 accounts for 11 / 20 of the total thickness of the nonwoven fabric; the mechanical reinforcement method is needle punching reinforcement, and it is mechanically reinforced once, twice and three times in sequence, the mechanical reinforcement direction is consistent, and the mechanical reinforcement depth is through reinforcement. The prepared sample is the original sample 3 for comparison.

[0050] Reverse penetration test method:

[0051] The two wires of the timing system are pasted to the non-woven fabric test surface, with the two wires spaced 1cm apart. The non-woven fabric is turned over and fixed on a rack, with the tested surface facing down. Take 5 medium-speed chemical qualitative analysis filter papers that meet the GB / T1914 standard, absorb enough prepared 0.9wt% sodium chloride aqueous solution as the permeate, and immerse and roll it to make its liquid content 100%. Five filter papers are laid on the reverse side of the test surface of the test sample non-woven fabric, and the timing is started. At the same time, the pressing block is contacted with the filter paper to provide a contact pressure of 1.5kpa. When the permeate penetrates to the reverse side and the two wires are turned on, the timer stops timing. The thickness of all non-woven fabrics used for testing of the present invention is 6mm.

[0052] Table 1 Evaluation table of reverse osmosis effect of nonwoven fabrics

[0053]

[0054] Example 4

[0055] like Figure 1-3 As shown in , 5, this embodiment discloses a multi-layer antibacterial one-way water-conducting diaper, which includes a double-layer water-conducting nonwoven fabric 101, a water-absorbent core layer 102, a bottom film 103, and a protective enclosure 104 in order from near to far close to the skin; the bottom film, the water-absorbent core layer, the double-layer water-conducting nonwoven fabric, and the protective enclosure are glued to form a cavity structure, and the water-absorbent core layer is coated in the cavity structure;

[0056] The double-layer water-conducting nonwoven fabric 101 includes, in order from near to far close to the skin, a melon fiber mesh layer 1 and an antibacterial fiber mesh layer / cotton fiber mesh layer 2 (the antibacterial fiber mesh layer / cotton fiber mesh layer 2 is represented as an antibacterial fiber mesh layer or a cotton fiber mesh layer 2);

[0057] The kiwano fiber mesh layer 1 is a water-conducting layer, and the antibacterial fiber mesh layer / cotton fiber mesh layer 2 is a water-absorbing layer; the thickness of the kiwano fiber mesh layer 1 accounts for 2 / 5-1 / 2 of the total thickness of the nonwoven fabric, and the thickness of the antibacterial fiber mesh layer / cotton fiber mesh layer 2 accounts for 1 / 2-3 / 5 of the total thickness of the nonwoven fabric; the length of the embedded section of the second kiwano fiber bundle 3 in the kiwano fiber mesh layer 1 embedded in the antibacterial fiber mesh layer / cotton fiber mesh layer 2 is 3 / 10-1 / 2 of the thickness of the antibacterial fiber mesh layer / cotton fiber mesh layer 2. 2; the length of the embedded section of the antibacterial fiber bundle / cotton fiber bundle 5 (antibacterial fiber bundle / cotton fiber bundle means antibacterial fiber bundle or cotton fiber bundle) in the antibacterial fiber mesh layer / cotton fiber mesh layer 2 embedded in the melon fiber mesh layer 1 is 3 / 10-1 / 2 of the thickness of the melon fiber mesh layer 1; the length of the embedded section of the first melon fiber bundle 4 in the melon fiber mesh layer 1 embedded in the antibacterial fiber mesh layer / cotton fiber mesh layer 2 is 3 / 5-7 / 10 of the thickness of the antibacterial fiber mesh layer / cotton fiber mesh layer 2.

[0058] In some embodiments, the antibacterial fiber is jute fiber or natural bamboo fiber.

[0059] In some embodiments, the skin-friendly layer is a polylactic acid fiber mesh layer.

[0060] In some embodiments, the thickness of the melon fiber mesh layer 1 accounts for 9 / 20 of the total thickness of the non-woven fabric, and the thickness of the antibacterial fiber mesh layer accounts for 11 / 20 of the total thickness of the non-woven fabric; the length of the embedded section of the second melon fiber bundle 3 in the melon fiber mesh layer 1 embedded in the antibacterial fiber mesh layer is 2 / 5 of the thickness of the antibacterial fiber mesh layer; the length of the embedded section of the antibacterial fiber bundle 4 in the antibacterial fiber mesh layer embedded in the melon fiber mesh layer 1 is 2 / 5 of the thickness of the melon fiber mesh layer 1; the length of the embedded section of the first melon fiber bundle 5 in the melon fiber mesh layer 1 embedded in the antibacterial fiber mesh layer is 13 / 20 of the thickness of the antibacterial fiber mesh layer.

[0061] In some solutions, the base film is made of PE.

[0062] It should be noted that, in this article, if there are first and second, etc., relational terms are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0063] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A double-layer water-conducting nonwoven fabric based on kiwano fiber, characterized in that: The nonwoven fabric comprises a kiwi fiber mesh layer and a hydrophilic fiber mesh layer; The caltrop fiber mesh layer is a water-conducting layer, and the hydrophilic fiber mesh layer is a water-absorbing layer; the thickness of the caltrop fiber mesh layer accounts for 2 / 5-1 / 2 of the total thickness of the nonwoven fabric, and the thickness of the hydrophilic fiber mesh layer accounts for 1 / 2-3 / 5 of the total thickness of the nonwoven fabric; The length of the embedded section of the second calottia fiber bundle in the calottia fiber mesh layer embedded in the hydrophilic fiber mesh layer is 3 / 10-1 / 2 of the thickness of the hydrophilic fiber mesh layer; the length of the embedded section of the hydrophilic fiber bundle in the hydrophilic fiber mesh layer embedded in the calottia fiber mesh layer is 3 / 10-1 / 2 of the thickness of the calottia fiber mesh layer; the length of the embedded section of the first calottia fiber bundle in the calottia fiber mesh layer embedded in the hydrophilic fiber mesh layer is 3 / 5-7 / 10 of the thickness of the hydrophilic fiber mesh layer; The thickness of the calottia fiber mesh layer accounts for 9 / 20 of the total thickness of the nonwoven fabric, and the thickness of the hydrophilic fiber mesh layer accounts for 11 / 20 of the total thickness of the nonwoven fabric; the length of the embedded section of the second calottia fiber bundle in the calottia fiber mesh layer embedded in the hydrophilic fiber mesh layer is 2 / 5 of the thickness of the hydrophilic fiber mesh layer; the length of the embedded section of the hydrophilic fiber bundle in the hydrophilic fiber mesh layer embedded in the calottia fiber mesh layer is 2 / 5 of the thickness of the calottia fiber mesh layer; the length of the embedded section of the first calottia fiber bundle in the calottia fiber mesh layer embedded in the hydrophilic fiber mesh layer is 13 / 20 of the thickness of the hydrophilic fiber mesh layer; The hydrophilic fiber is one of cotton fiber, jute fiber and natural bamboo fiber.

2. A multi-layer antibacterial one-way water-conducting diaper, characterized in that: The double-layer water-conducting nonwoven fabric, the water-absorbing core layer, the bottom film, and the protective enclosure are sequentially included in the order from near to far of the skin; the bottom film, the water-absorbing core layer, the double-layer water-conducting nonwoven fabric, and the protective enclosure are glued to form a cavity structure, and the water-absorbing core layer is coated in the cavity structure; The double-layer water-conducting nonwoven fabric comprises a kiwi fiber mesh layer and an antibacterial fiber mesh layer; The kiwi fiber mesh layer is a water-conducting layer, and the antibacterial fiber mesh layer is a water-absorbing layer; the thickness of the kiwi fiber mesh layer accounts for 2 / 5-1 / 2 of the total thickness of the nonwoven fabric, and the thickness of the antibacterial fiber mesh layer accounts for 1 / 2-3 / 5 of the total thickness of the nonwoven fabric; The embedding length of the second caltrop fiber bundle in the caltrop fiber mesh layer embedded in the antibacterial fiber mesh layer is 3 / 10-1 / 2 of the thickness of the antibacterial fiber mesh layer; the embedding length of the antibacterial fiber bundle in the antibacterial fiber mesh layer embedded in the caltrop fiber mesh layer is 3 / 10-1 / 2 of the thickness of the caltrop fiber mesh layer; the embedding length of the first caltrop fiber bundle in the caltrop fiber mesh layer embedded in the antibacterial fiber mesh layer is 3 / 5-7 / 10 of the thickness of the antibacterial fiber mesh layer; The skin-friendly layer is a polylactic acid fiber mesh layer; The thickness of the melon fiber mesh layer accounts for 9 / 20 of the total thickness of the non-woven fabric, and the thickness of the antibacterial fiber mesh layer accounts for 11 / 20 of the total thickness of the non-woven fabric; the length of the embedded section of the second melon fiber bundle in the melon fiber mesh layer embedded in the antibacterial fiber mesh layer is 2 / 5 of the thickness of the antibacterial fiber mesh layer; the length of the embedded section of the antibacterial fiber bundle in the antibacterial fiber mesh layer embedded in the melon fiber mesh layer is 2 / 5 of the thickness of the melon fiber mesh layer; the length of the embedded section of the first melon fiber bundle in the melon fiber mesh layer embedded in the antibacterial fiber mesh layer is 13 / 20 of the thickness of the antibacterial fiber mesh layer.

3. The multi-layer antibacterial one-way water-conducting diaper according to claim 2, characterized in that: The antibacterial fiber is jute fiber.

4. The multi-layer antibacterial one-way water-conducting diaper according to claim 2, characterized in that: The antibacterial fiber is natural bamboo fiber.

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