High-water-absorption composite non-woven fabric
By using hydrophilic ES nonwoven fabrics, bacterial cellulose modified composite nonwoven fabrics, superabsorbent fiber nonwoven fabrics, thermoplastic polyurethane films and PET spunbond nonwoven fabrics in composite nonwoven fabrics, composite nonwoven fabrics are solved The fabric has poor liquid absorption, low tensile strength and easy wear problems, achieving high water absorption, increased tensile strength and wear resistance, meeting the high performance needs of personal hygiene products.
Patent Information
- Application Number
- CN202323564234.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2033-12-26
AI Technical Summary
Common composite nonwoven fabrics on the market have defects such as poor liquid absorption, poor liquid retention performance, low tensile strength, and easy wear, making it difficult to meet the high water absorption needs of personal hygiene products.
The hydrophilic nonwoven fabric layer, the first water-absorbing layer, the intermediate reinforcement layer, the second water-absorbing layer, the waterproof layer and the wear-resistant layer structure are adopted, and the hydrophilic nonwoven fabric layer is a hydrophilic ES nonwoven fabric, the first The water-absorbent layer is a bacterial cellulose-modified composite nonwoven fabric, the intermediate reinforcement layer is uniformly opened through holes, the second water-absorbent layer is a super-absorbent fiber nonwoven fabric, the water-proof layer is a thermoplastic polyurethane film, and the wear-resistant layer is a PET spunbond nonwoven fabric , improve performance through hot pressing composite technology.
It achieves high water absorption, fast water permeability, good water retention, improves tensile strength, prevents liquid leakage and wear resistance, and ensures the performance and service life of non-woven fabrics during use.
Smart Images
Figure CN222360707U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of non-woven fabrics, in particular to a highly water-absorbent composite non-woven fabric. Background Art
[0002] Non-woven fabric, also known as non-woven fabric, is a fabric that does not require spinning and weaving. It is just a directional or random arrangement of textile staple fibers or filaments to form a fiber web structure, and then reinforced by mechanical, thermal bonding or chemical methods. It is widely used due to its low price and convenient use. In the field of personal hygiene products, such as diapers, sanitary napkins, urine pads, etc., non-woven fabrics for these purposes need to have strong water absorption and be able to quickly absorb moisture.
[0003] However, the common composite non-woven fabrics on the market have defects such as poor liquid absorption, poor liquid retention performance, low tensile strength, and easy wear. Utility Model Content
[0004] The utility model aims to provide a highly water-absorbent composite nonwoven fabric, which aims to solve the problems raised in the above-mentioned background technology.
[0005] In order to solve the above technical problems, the purpose of the utility model is achieved as follows: a highly water-absorbent composite non-woven fabric, comprising: a hydrophilic non-woven fabric layer, a first water-absorbent layer, an intermediate reinforcement layer, a second water-absorbent layer, a waterproof layer and a wear-resistant layer composited in sequence; the hydrophilic non-woven fabric layer is a hydrophilic ES non-woven fabric; the first water-absorbent layer is a bacterial cellulose modified composite non-woven fabric; the intermediate reinforcement layer is evenly provided with through holes.
[0006] On the basis of the above solution and as a preferred solution of the above solution: the second water-absorbing layer is a super absorbent fiber non-woven fabric.
[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: the middle reinforcing layer includes ES fiber non-woven fabric and two layers of polyethylene fiber non-woven fabric, and the ES fiber non-woven fabric is arranged between the two layers of the polyethylene fiber non-woven fabric.
[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: the waterproof layer is a thermoplastic polyurethane film.
[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: the wear-resistant layer is PET spunbonded non-woven fabric.
[0010] On the basis of the above scheme and as a preferred scheme of the above scheme: the hydrophilic non-woven fabric layer, the first water-absorbing layer, the middle reinforcing layer, the second water-absorbing layer, the waterproof layer and the wear-resistant layer are composited by hot pressing.
[0011] The beneficial effects of the utility model are as follows: based on the highly water-absorbent composite non-woven fabric of the utility model, the hydrophilic non-woven fabric layer has a good hydrophilic effect and fast water permeability, and the liquid can quickly penetrate and enter the interior of the non-woven fabric; the first water-absorbent layer and the second water-absorbent layer have high water absorption and high water retention; the middle reinforcing layer can greatly improve the overall tensile strength of the composite non-woven fabric; the waterproof layer can prevent the liquid absorbed on one side from leaking out from the other side, thereby keeping the other side of the non-woven fabric dry; the wear-resistant layer has the advantages of high strength, fatigue resistance, and good friction resistance, is not easy to wear during use, and plays a protective role. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic diagram of the structure of the highly water-absorbent composite non-woven fabric involved in the utility model;
[0013] In the figure: 1-hydrophilic non-woven fabric layer, 2-first water-absorbing layer, 3-middle reinforcing layer, 4-second water-absorbing layer, 5-waterproof layer, 6-wear-resistant layer. DETAILED DESCRIPTION
[0014] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.
[0015] Combination Figure 1 The present embodiment is described in detail. A highly water-absorbent composite non-woven fabric comprises: a hydrophilic non-woven fabric layer 1, a first water-absorbent layer 2, an intermediate reinforcing layer 3, a second water-absorbent layer 4, a waterproof layer 5 and a wear-resistant layer 6 which are composited in sequence; the hydrophilic non-woven fabric layer 1 is a hydrophilic ES non-woven fabric; the first water-absorbent layer 2 is a bacterial cellulose modified composite non-woven fabric; the intermediate reinforcing layer 3 is evenly provided with through holes.
[0016] The hydrophilic ES non-woven fabric is an ES non-woven fabric modified by a non-silicone hydrophilic finishing agent. Specifically, the non-silicone hydrophilic finishing agent is compounded by Tween 60, potassium dodecyl polyoxyethylene ether phosphate, potassium hexadecanol polyoxyethylene ether phosphate, E1308, L1305, PEG and dodecyl dimethyl betaine. The hydrophilic ES non-woven fabric has good hydrophilic properties, fast water permeability, small reverse osmosis volume and good comprehensive performance.
[0017] Bacterial cellulose is an unbranched, macromolecular straight-chain polymer formed by connecting pyranose glucose monomers through β-1,4-glycosidic bonds. Bacterial cellulose is widely used for its good biocompatibility, high water retention and crystallinity, high tension and strength, and good nanofiber network. Specifically, coconut milk, 1% yeast powder, 0.6% peptone, 0.02% culture medium solution 1, 0.01% culture medium solution 2, and 2% glucose are used as raw materials to prepare a culture medium, which is inoculated after sterilization and added to a culture dish after amplification. The non-woven fabric that has been treated with alkali for 12 hours and then treated to neutrality is placed in the above culture medium after sterilization, and then an appropriate amount of culture medium is added to the non-woven fabric. Cultivate at room temperature for 10 days to obtain a bacterial cellulose composite non-woven fabric. Then, NaBH4 is used to reduce AgNO3 on the bacterial cellulose composite non-woven fabric to obtain a bacterial cellulose modified composite non-woven fabric. The bacterial cellulose and the non-woven fabric are well composited, and the moisture content of the non-woven fabric is significantly improved, and the tensile strength and biocompatibility are improved. The bacterial cellulose modified composite non-woven fabric obtained by loading Ag by the in-situ composite method has an excellent antibacterial effect, and the maximum antibacterial rates against Escherichia coli and Staphylococcus aureus can reach 99.96% and 99.93%, respectively.
[0018] Furthermore, the second water-absorbing layer 4 is a super absorbent fiber non-woven fabric. Specifically, the super absorbent fiber non-woven fabric is made by mixing 50% super absorbent fiber, 30% viscose fiber and 20% ES fiber, and consolidating the fiber web through a thermal bonding process. The surface of the super absorbent non-woven fabric is flat and uniform, the water absorption effect is very good, and the original shape is basically maintained after absorbing water, and it has good comfort in use.
[0019] Furthermore, the intermediate reinforcing layer 3 includes ES fiber non-woven fabric and two layers of polyethylene fiber non-woven fabric, and the ES fiber non-woven fabric is arranged between the two layers of polyethylene fiber non-woven fabric. Polyethylene fiber refers to a fiber material obtained by spinning polyethylene by melt spinning, which has the advantages of high strength and low density, and the wet strength and elongation are the same as those in the dry state, which can provide good tensile strength for the composite non-woven fabric as a whole. The intermediate reinforcing layer 3 can greatly improve the tensile strength by stacking three layers of non-woven fabric, and the evenly arranged through holes can ensure a certain water absorption performance.
[0020] Furthermore, the waterproof layer 5 is a thermoplastic polyurethane film. Thermoplastic polyurethane film has good elasticity, light weight and high waterproof performance. When used as the waterproof layer 5, the water absorbed by the non-woven fabric can leak out from the other side, ensuring the dry effect of the other side of the non-woven fabric.
[0021] Furthermore, the wear-resistant layer 6 is a PET spunbond nonwoven fabric. The PET spunbond nonwoven fabric is a fiber mesh structure formed by directional or random arrangement of polyester long fibers, which are bonded together by physical methods. It has the advantages of high strength, fatigue resistance, and good friction resistance.
[0022] Furthermore, the hydrophilic non-woven fabric layer 1, the first water-absorbing layer 2, the intermediate reinforcing layer 3, the second water-absorbing layer 4, the waterproof layer 5 and the wear-resistant layer 6 are composited by hot pressing.
[0023] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.
Claims
1. A highly water-absorbent composite nonwoven fabric, characterized in that: include: A hydrophilic non-woven fabric layer (1), a first water-absorbing layer (2), an intermediate reinforcing layer (3), a second water-absorbing layer (4), a waterproof layer (5) and a wear-resistant layer (6) are composited in sequence; the hydrophilic non-woven fabric layer (1) is a hydrophilic ES non-woven fabric; the first water-absorbing layer (2) is a bacterial cellulose-modified composite non-woven fabric; and the intermediate reinforcing layer (3) is uniformly provided with through holes.
2. A highly water-absorbent composite nonwoven fabric according to claim 1, characterized in that: The second water-absorbing layer (4) is a super absorbent fiber non-woven fabric.
3. The highly water-absorbent composite nonwoven fabric according to claim 1, characterized in that: The intermediate reinforcing layer (3) comprises ES fiber nonwoven fabric and two layers of polyethylene fiber nonwoven fabric, and the ES fiber nonwoven fabric is arranged between the two layers of polyethylene fiber nonwoven fabric.
4. The highly water-absorbent composite nonwoven fabric according to claim 1, characterized in that: The waterproof layer (5) is a thermoplastic polyurethane film.
5. The highly water-absorbent composite nonwoven fabric according to claim 1, characterized in that: The wear-resistant layer (6) is PET spunbonded non-woven fabric.
6. The highly water-absorbent composite nonwoven fabric according to claim 1, characterized in that: The hydrophilic non-woven fabric layer (1), the first water-absorbing layer (2), the intermediate reinforcing layer (3), the second water-absorbing layer (4), the waterproof layer (5) and the wear-resistant layer (6) are laminated by hot pressing.