A kind of skin-friendly sunscreen cotton lining non-woven fabric

Abstract

The utility model discloses a kind of skin-friendly sun protection cotton inner layer nonwoven fabrics, wherein skin-friendly sun protection cotton inner layer nonwoven fabric includes pure cotton fiber layer and fibril sunscreen layer, the fibril sunscreen layer includes chemical fiber layer and inorganic sunscreen agent, the inorganic sunscreen agent and the chemical fiber layer of high molecular polymer melt blend in chemical fiber, the pure cotton fiber layer is connected with the fibril sunscreen layer by water-jet solid network mode. The skin-friendly sun protection cotton inner layer nonwoven fabric of the utility model has good skin-friendly hygroscopicity, and good sunscreen performance, can be ultrasonically bonded with other chemical fiber nonwoven fabric.

Description

Technical Field

[0001] This utility model relates to the field of fiber product technology, and in particular to a skin-friendly sun-protective cotton inner layer nonwoven fabric. Background Technology

[0002] Spunlace nonwoven fabric is produced by spraying high-pressure micro-jet water onto one or more layers of fiber web, causing the fibers to entangle and thus strengthening the web to a certain strength. The resulting fabric is called spunlace nonwoven fabric. Its fiber raw materials are widely available, including polyester, nylon, polypropylene, cotton, viscose, chitosan, microfiber, Tencel, silk, bamboo fiber, wood pulp fiber, seaweed fiber, etc.

[0003] Among them, spunlace fabric made of pure cotton fibers has advantages such as good moisture absorption and skin-friendly softness. However, naturally sourced cotton fibers have poor ultraviolet blocking performance and poor sun protection performance. Generally, chemical coatings such as ultraviolet absorbers are needed to improve their ultraviolet blocking performance. However, ultraviolet absorbers are usually small molecule compounds, and their coatings are at risk of peeling off or migrating into the human body.

[0004] In view of this, the purpose of this utility model is to provide a new technical solution to solve the existing technical problems. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, this utility model provides a skin-friendly sun-protective cotton inner layer nonwoven fabric, which solves the problem of limited application of existing spunlace nonwoven fabrics.

[0006] The technical solution adopted by this utility model to solve its technical problem is: A skin-friendly sun-protective cotton inner layer nonwoven fabric includes a pure cotton fiber layer and a fibrillated fiber sun-protective layer. The fibrillated fiber sun-protective layer includes a chemical fiber layer and an inorganic sunscreen agent. The inorganic sunscreen agent is melt-blended with the high molecular polymer in the chemical fiber of the chemical fiber layer. The pure cotton fiber layer and the fibrillated fiber sun-protective layer are connected by a hydroentangled web bonding method.

[0007] In the above structure, the pure cotton fiber layer contains degreased and bleached cotton fibers, and the length of the pure cotton fibers is 30-50mm. The cross-section of the pure cotton fiber is oval.

[0008] In the above structure, the chemical fibers in the chemical fiber layer are one or more of polyester, nylon, polypropylene, and ES fibers; The chemical fiber has a length of 30-50 mm.

[0009] In the above structure, the basis weight of the skin-friendly sunscreen cotton inner nonwoven fabric is 30-100 g / m². 2 .

[0010] In the above structure, the weight ratio of the pure cotton fiber layer to the fibrillated sunscreen layer is in the range of 3:7-7:3.

[0011] In the above structure, the inorganic sunscreen agent is titanium dioxide particles, zinc oxide particles, or a combination of titanium dioxide particles and zinc oxide particles.

[0012] In the above structure, the particle size of the inorganic sunscreen agent is 50-300 nm.

[0013] The beneficial effects of this invention are as follows: The skin-friendly sun-protective cotton inner layer nonwoven fabric of this invention not only has good moisture absorption and skin-friendly properties, but also good sun protection properties; moreover, the skin-friendly sun-protective cotton inner layer nonwoven fabric of this invention can be ultrasonically bonded to other chemical fiber nonwoven fabrics through the chemical fiber layer of the original fiber sun protection layer, overcoming the problem of poor ultrasonic sewing performance of traditional pure cotton spunlace nonwoven fabrics and other nonwoven fabrics; in addition, the inorganic sunscreen agent is added to the raw material during the spinning stage, fully mixed with the raw material, and embedded in the spinning polymer. Compared with the form of using chemical sunscreen agent coating, this inorganic sunscreen agent embedded in the polymer body is less likely to fall off, and there is no risk of precipitation of small molecule chemical sunscreen agents, making it safer. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Attached labels: 1. Pure cotton fiber layer; 2. Original fiber sun protection layer. Detailed Implementation

[0017] The following is in conjunction with the appendix Figure 1 The present invention will be further described below.

[0018] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0019] Reference Figure 1This invention provides a skin-friendly, sun-protective cotton inner layer nonwoven fabric, comprising a pure cotton fiber layer 1 and a fibrillated sun-protective layer 2. The fibrillated sun-protective layer 2 includes a chemical fiber layer and an inorganic sunscreen agent. The chemical fiber layer is formed by melt spinning of chemical fibers. The inorganic sunscreen agent is added to the spinning melt during the melt spinning process, allowing the inorganic sunscreen agent and chemical fibers to be fully melt-blended and embedded in the spinning polymer, ultimately forming the fibrillated sun-protective layer 2. The pure cotton fiber layer 1 and the fibrillated sun-protective layer 2 are connected and fixed by a hydroentangled web. This invention relates to a skin-friendly sun-protective cotton inner nonwoven fabric, which forms a composite structure layer through a pure cotton fiber layer 1 and a fibrillated fiber sun-protective layer 2. The pure cotton fiber layer 1 possesses excellent moisture absorption properties and is soft and skin-friendly. The inorganic sunscreen agent within the fibrillated fiber sun-protective layer 2 provides sun protection, while the chemical fibers have a melting point. The fibrillated fiber sun-protective layer 2, formed with chemical fibers as the matrix, can be ultrasonically bonded to other chemical fiber nonwoven fabrics, overcoming the limitation of traditional pure cotton spunlace nonwoven fabrics being unable to be ultrasonically bonded to other nonwoven fabrics. In use, the pure cotton fiber layer 1 is placed as the inner layer. Cotton fibers are natural fibers with a soft surface, warm touch, and skin-friendly feel. As the inner layer, it directly contacts the skin, avoiding the roughness, friction, or coldness that some synthetic nonwoven fabrics may cause, greatly improving user comfort. Furthermore, cotton fibers have a hollow structure and extremely strong moisture absorption capacity. As the inner layer, it can quickly absorb sweat, moisture, or other liquids from the skin surface, keeping the contact surface dry.

[0020] Inorganic sunscreens are added to the spinning melt during the spinning stage and fully mixed with it, allowing the inorganic sunscreens to be embedded in the spinning polymer. The resulting fibril sunscreen layer 2 has a good sun protection effect. Compared with using chemical sunscreen coatings to improve the UV blocking performance of the fiber layer, the form of inorganic sunscreens embedded in the spinning polymer is less likely to detach or migrate into the human body, and there is no risk of small molecule chemical sunscreens precipitating out, making it safer to use.

[0021] Furthermore, the pure cotton fibers in the pure cotton fiber layer 1 are degreased and bleached cotton fibers, and the cross-section of the pure cotton fibers is oval.

[0022] Degreasing pure cotton fibers removes natural waxes and oils from their surface, significantly improving their hydrophilicity and enabling them to quickly absorb liquids. The flat or elliptical cross-section of oval fibers makes them more prone to bending and displacement during high-pressure hydroentangling, promoting entanglement between fibers. Furthermore, the oval shape increases the contact area between fibers, improving the entanglement efficiency of the hydroentangling process and resulting in a more uniform and stable fiber mesh structure.

[0023] Furthermore, the length of pure cotton fibers is 30-50mm.

[0024] Furthermore, the chemical fibers in the chemical fiber layer can be selected from one or more of polyester, nylon, polypropylene, and ES fibers, and the length of the selected chemical fibers is 30-50mm.

[0025] During the hydroentangling process, excessively long fibers are prone to tangling and clumping, while excessively short fibers are difficult to form a continuous web. Fibers with a length of 30-50mm are of moderate length and are not easily stretched or broken by excessive mechanical force during the combing process, ensuring fiber integrity and reducing the generation of short fibers. In addition, fibers of this length can balance dispersion and web uniformity, reducing the problem of uneven product thickness.

[0026] Furthermore, in this embodiment, the basis weight of the nonwoven fabric in the inner layer of the skin-friendly sunscreen cotton is 30-100 g / m². 2 .

[0027] Furthermore, the weight ratio of the pure cotton fiber layer 1 to the fibrillated fiber sunscreen layer 2 ranges from 3:7 to 7:3. The higher the weight ratio of the fibrillated fiber sunscreen layer 2, the better the thermal adhesion of the skin-friendly sunscreen cotton inner non-woven fabric; the higher the weight ratio of the pure cotton fiber layer 1, the better the moisture absorption performance.

[0028] Furthermore, the inorganic sunscreen agent is titanium dioxide, zinc oxide, or a combination of titanium dioxide and zinc oxide. In this embodiment, a particulate inorganic sunscreen agent is selected, wherein the particle size of the inorganic sunscreen agent is 50-300 nm. In this embodiment, the fibrillated sunscreen layer 2 contains 1%-3% of the inorganic sunscreen agent.

[0029] Based on the aforementioned skin-friendly sun-protective cotton inner non-woven fabric, this utility model also provides: A sun-protective face mask includes an inner layer, a middle layer, and an outer layer arranged sequentially, wherein the inner layer and / or the outer layer are made of a skin-friendly, sun-protective cotton nonwoven fabric.

[0030] Furthermore, the intermediate layer is meltblown fabric or spunbond fabric or a combination of meltblown fabric and spunbond fabric; Specifically, in one embodiment, the intermediate layer is meltblown fabric; Alternatively, the middle layer may be spunbond fabric; Alternatively, the middle layer may be a combination of meltblown fabric and spunbond fabric.

[0031] In one embodiment, the outer layer is made of the aforementioned skin-friendly sun-protective cotton inner non-woven fabric, and the original fiber sun-protective layer 2 is bonded to the surface of the middle layer facing away from the inner layer, that is, the pure cotton fiber layer 1 is disposed on the side facing the outer surface of the mask; at this time, the inner layer is set as a cotton fiber layer.

[0032] In one embodiment, the inner layer is made of the aforementioned skin-friendly sun-protective cotton inner non-woven fabric, and the original fiber sun-protective layer 2 is attached to the surface of the middle layer facing away from the outer layer, that is, the pure cotton fiber layer 1 faces the user's face.

[0033] The following description, in conjunction with embodiments and comparative examples, further illustrates the skin-friendly sun-protective cotton inner non-woven fabric of this utility model: Example 1: A skin-friendly sun-protective cotton inner non-woven fabric is composed of a pure cotton fiber layer 1 and a fibrillated fiber sun-protective layer 2. The fibrillated fiber sun-protective layer 2 includes a chemical fiber layer and an inorganic sunscreen agent. The inorganic sunscreen agent is melt-blended with the high molecular polymer in the chemical fiber of the chemical fiber layer. The two fiber layers are reinforced together by a hydroentangled web bonding method.

[0034] The pure cotton fiber layer 1 is made of degreased and bleached cotton fiber with a fiber length of 38mm and an oval cross-section.

[0035] The chemical fiber layer is made of polyester with a fiber length of 38mm.

[0036] The weight ratio of pure cotton fiber layer 1 to fibrillated sunscreen layer 2 is 5:5.

[0037] The fiber-reinforced sunscreen layer 2 contains 1.5% inorganic sunscreen agents.

[0038] The inorganic sunscreen agent is titanium dioxide, and the particle size of the inorganic sunscreen agent is 100nm.

[0039] The inner layer of the skin-friendly sunscreen cotton has a non-woven fabric weight of 35 g / m². 2 .

[0040] Example 2: A skin-friendly sun-protective cotton inner non-woven fabric is composed of a pure cotton fiber layer 1 and a fibrillated fiber sun-protective layer 2. The fibrillated fiber sun-protective layer 2 includes a chemical fiber layer and an inorganic sunscreen agent. The inorganic sunscreen agent is melt-blended with the high molecular polymer in the chemical fiber of the chemical fiber layer. The two fiber layers are reinforced together by a hydroentangled web bonding method.

[0041] The pure cotton fiber layer 1 is made of degreased and bleached cotton fiber with a fiber length of 35mm and an oval cross-section.

[0042] The chemical fiber layer is made of polyester with a fiber length of 36mm.

[0043] The weight ratio of pure cotton fiber layer 1 to fibrillated sunscreen layer 2 is 5.5:5.

[0044] The fiber-reinforced sunscreen layer 2 contains 2% inorganic sunscreen agents.

[0045] The inorganic sunscreen is a mixture of titanium dioxide and zinc oxide in a weight ratio of 5:5, and the particle size of the inorganic sunscreen is 150nm.

[0046] The inner layer of the skin-friendly sunscreen cotton has a non-woven fabric weight of 35 g / m². 2 .

[0047] Example 3: A skin-friendly sun-protective cotton inner non-woven fabric is composed of a pure cotton fiber layer 1 and a fibrillated fiber sun-protective layer 2. The fibrillated fiber sun-protective layer 2 includes a chemical fiber layer and an inorganic sunscreen agent. The inorganic sunscreen agent is melt-blended with the high molecular polymer in the chemical fiber of the chemical fiber layer. The two fiber layers are reinforced together by a hydroentangled web bonding method.

[0048] The pure cotton fiber is degreased and bleached cotton fiber with a fiber length of 32 mm and an oval cross-section.

[0049] The chemical fiber layer is made of ES fiber with a fiber length of 40mm.

[0050] The weight ratio of pure cotton fiber layer 1 to fibrillated sunscreen layer 2 is 4:6.

[0051] The fiber-reinforced sunscreen layer 2 contains 2.5% inorganic sunscreen agents.

[0052] The inorganic sunscreen agent is zinc oxide, and the particle size of the inorganic sunscreen agent is 200nm.

[0053] The inner layer of the skin-friendly sunscreen cotton has a non-woven fabric weight of 35 g / m². 2 .

[0054] Comparative Example 1: A spunlace nonwoven fabric is made of pure cotton fiber layers 1 reinforced together by a spunlace web method.

[0055] The first layer of pure cotton fiber is made of degreased and bleached cotton fiber with a fiber length of 38mm and an oval cross-section. The weight of the spunlace nonwoven fabric is 35 g / m². 2 .

[0056] Comparative Example 2: A spunlace nonwoven fabric is composed of two layers of fibrillated sun protection layer 2, which are reinforced together by a spunlace bonding method.

[0057] The chemical fiber is polyester.

[0058] The fiber-reinforced sunscreen layer 2 contains 2% inorganic sunscreen agents.

[0059] The inorganic sunscreen agent is titanium dioxide, and the particle size of the inorganic sunscreen agent is 200nm.

[0060] The basis weight of the spunlace nonwoven fabric is 35 g / m². 2 .

[0061] The above embodiments and comparative examples were tested for their sun protection and moisture absorption properties.

[0062] Among them, the sun protection performance test was conducted according to the national standard GB / T 18830-2009 "Evaluation of UV protection performance of textiles" to test the UV protection performance of each sample.

[0063] The moisture absorption performance test was conducted according to the national standard GB / 9995-1997 "Determination of Moisture Content and Moisture Regain of Textile Materials - Oven Drying Method" to test the moisture regain of each sample.

[0064] The test results are shown in Table 1: Table 1

[0065] From the test data in Table 1 above, it can be seen that the skin-friendly sun protection cotton inner layer nonwoven fabric of this utility model has better UV blocking performance than spunlace nonwoven fabric made of pure cotton fibers; and better moisture absorption performance than spunlace nonwoven fabric made of pure virgin fiber sun protection nonwoven fabric.

[0066] Ultrasonic performance tests were conducted on the above embodiments and comparative examples. The ultrasonic performance test specifically included an ultrasonic seam performance test. The method involved stacking two layers of spunlace nonwoven fabric together and hot-pressing them together using an ultrasonic sewing machine. The peel force of the seam was then tested using a fabric strength tester, with a test gap of 100 mm and a tensile rate of 100 mm / min. When using this skin-friendly sunscreen cotton inner nonwoven fabric, the original fiber sunscreen layer was in contact with other synthetic fiber nonwoven fabrics. The test results are shown in Table 2. Table 2

[0067] As can be seen from the test data in Table 2 above, the skin-friendly sunscreen cotton inner layer nonwoven fabric and spunbond fabric prepared in this embodiment of the present invention have high peel force, which is slightly lower than the peel force between the pure cotton spunlace nonwoven fabric and spunbond fabric in Comparative Example 2; the pure cotton spunlace nonwoven fabric in Comparative Example 1 has very low peel force with spunbond fabric because the cellulose of cotton fibers cannot achieve melt bonding, which cannot meet the actual processing requirements.

[0068] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A skin-friendly, sun-protective cotton inner layer nonwoven fabric, characterized in that: It includes a pure cotton fiber layer and a fibrillated fiber sun protection layer. The fibrillated fiber sun protection layer includes a chemical fiber layer and an inorganic sunscreen agent. The inorganic sunscreen agent is melt-blended with the high molecular polymer in the chemical fiber of the chemical fiber layer. The pure cotton fiber layer and the fibrillated fiber sun protection layer are connected by a hydroentangled web method.

2. The skin-friendly sun-protective cotton inner layer nonwoven fabric according to claim 1, characterized in that: The pure cotton fiber layer contains degreased and bleached cotton fibers, and the length of the pure cotton fibers is 30-50mm. The cross-section of the pure cotton fiber is oval.

3. The skin-friendly sun-protective cotton inner layer nonwoven fabric according to claim 1, characterized in that: The chemical fiber layer contains one or more of polyester, nylon, polypropylene, and ES fibers. The chemical fiber has a length of 30-50 mm.

4. The skin-friendly sun-protective cotton inner layer nonwoven fabric according to claim 1, characterized in that: The weight of the non-woven fabric in the inner layer of the skin-friendly sunscreen cotton is 30-100 g / m². 2 .

5. The skin-friendly sun-protective cotton inner layer nonwoven fabric according to claim 1, characterized in that... The weight ratio of the pure cotton fiber layer to the original fiber sunscreen layer ranges from 3:7 to 7:

3.

6. The skin-friendly sun-protective cotton inner layer nonwoven fabric according to claim 1, characterized in that: The inorganic sunscreen agent is titanium dioxide particles, zinc oxide particles, or a combination of titanium dioxide particles and zinc oxide particles.

7. The skin-friendly sun-protective cotton inner layer nonwoven fabric according to claim 1, characterized in that: The inorganic sunscreen agent has a particle size of 50-300 nm.

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