Antibacterial polyester staple fiber
Through a multi-layered structural design, polyester staple fiber utilizes technologies such as bio-based polyester fiber, antibacterial microcapsules, and nanofiber membranes to solve the problems of insufficient breathability and antibacterial properties of polyester staple fiber, achieving higher wearing comfort and health protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-11
- Publication Date
- 2026-03-10
AI Technical Summary
Polyester staple fiber has poor breathability and moisture absorption, which makes it easy for bacteria to grow, affecting wearing comfort and health.
It adopts a multi-layer structure design, including a base layer, an antibacterial layer, a breathable and moisturizing layer, an eco-friendly protective fiber layer, and a skin-friendly layer. It uses technologies such as bio-based polyester fiber, antibacterial microcapsules, nanofiber membranes, and microporous coatings to improve breathability and antibacterial properties.
It effectively improves the breathability of fibers, inhibits bacterial growth, enhances wearing comfort and health safety, and extends the service life of textiles.
Smart Images

Figure CN223982274U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an antibacterial polyester staple fiber, belonging to the field of polyester staple fiber. Background Technology
[0002] Polyester staple fiber plays a crucial role in the cotton textile industry. It can be spun alone or blended with various other fibers, such as cotton, viscose, linen, wool, and vinylon. This blending flexibility allows polyester staple fiber to create a diverse range of yarns, which are then widely used in clothing fabrics, providing people with a wealth of choices and possibilities for their clothing. Furthermore, polyester staple fiber has also secured a place in the home furnishing fabric market due to its excellent performance, adding a modern feel and comfort to home environments.
[0003] However, polyester staple fiber also has some inherent limitations. Due to its dense structure and relatively poor breathability, coupled with its high abrasion resistance but relatively low moisture absorption and wicking function, bacteria can easily grow on fabrics made of polyester staple fiber. Therefore, special care needs to be taken when using polyester staple fiber fabric to make close-fitting clothing. Considering its insufficient breathability and moisture absorption, polyester staple fiber is not suitable for making close-fitting clothing that requires high comfort and breathability. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] In view of the shortcomings of the existing technology, this utility model provides an antibacterial polyester staple fiber, which has the advantages of improved breathability and comfort.
[0006] (II) Technical Solution
[0007] To achieve the aforementioned goals of improving breathability and comfort, this utility model provides the following technical solution: an antibacterial polyester staple fiber, comprising:
[0008] The base layer, the antibacterial layer at the bottom of the base layer, the breathable and moisturizing layer at the bottom of the antibacterial layer, the eco-protective fiber layer at the bottom of the breathable and moisturizing layer, and the skin-friendly layer at the bottom of the eco-protective fiber layer.
[0009] Furthermore, the thickness of the base layer is two hundred millimeters, and the base layer is composed of multiple bio-based polyester fiber filaments twisted together.
[0010] Furthermore, the antibacterial layer is 20 millimeters thick and is composed of multiple antibacterial polyester short fibers bonded together, and antibacterial microcapsules are embedded inside the antibacterial layer.
[0011] Furthermore, the breathable and moisturizing layer has a thickness of fifty millimeters and is composed of a polyester fiber layer and a nanofiber membrane layer.
[0012] Furthermore, the nanofiber membrane is attached to the upper surface of the polyester fiber layer by impregnation, and both the polyester fiber layer and the nanofiber membrane have microporous structures on their surfaces.
[0013] Furthermore, the thickness of the ecological protective fiber layer is thirty millimeters, and the surface of the ecological protective fiber layer is coated with a waterproof and oil-proof coating, which is a microporous coating.
[0014] Furthermore, the thickness of the skin-friendly layer is fifty millimeters, and the skin-friendly layer is jointly formed by skin-friendly non-woven fabric and micro-nano elastic fiber layer through thermal bonding, with the micro-nano elastic fiber layer located on the upper surface of the skin-friendly non-woven fabric.
[0015] (III) Beneficial Effects
[0016] Compared with the prior art, this utility model provides an antibacterial polyester staple fiber, which has the following beneficial effects:
[0017] This antibacterial polyester staple fiber, through adjustments to its fiber structure, effectively enhances the fiber's breathability. This not only makes the resulting textiles more comfortable to wear and reduces stuffiness, but also promotes gas exchange between the skin and the external environment, helping to maintain dry and healthy skin. Furthermore, by introducing an antibacterial layer, it effectively inhibits the growth and reproduction of bacteria, reducing health risks such as skin diseases, extending the lifespan of textiles, and reducing odors and stains caused by bacterial growth. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a cross-sectional view of the base layer in the structure of this utility model;
[0020] Figure 3 This is a cross-sectional view of the antibacterial layer in the structure of this utility model;
[0021] Figure 4 This is a cross-sectional view of the breathable and moisture-retaining layer in the structure of this utility model;
[0022] Figure 5 This is a cross-sectional view of the skin-friendly layer in the structure of this utility model.
[0023] In the diagram: 1. Base layer; 101. Bio-based polyester fiber filament; 2. Antibacterial layer; 201. Antibacterial polyester staple fiber filament; 202. Antibacterial microcapsule; 3. Breathable and moisturizing layer; 301. Polyester fiber layer; 302. Nanofiber membrane layer; 4. Ecological protective fiber layer; 5. Skin-friendly layer; 501. Skin-friendly non-woven fabric; 502. Micro-nano elastic fiber layer. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figures 1 to 5 This utility model provides a technical solution: an antibacterial polyester staple fiber, comprising:
[0026] The base layer 1, the antibacterial layer 2 at the bottom of the base layer 1, the breathable and moisturizing layer 3 at the bottom of the antibacterial layer 2, the eco-friendly protective fiber layer 4 at the bottom of the breathable and moisturizing layer 3, and the skin-friendly layer 5 at the bottom of the eco-friendly protective fiber layer 4.
[0027] It should be noted that the thickness of the base layer 1 is 200 mm, and the base layer 1 is composed of multiple bio-based polyester fiber filaments 101 twisted together.
[0028] The base layer 1, as the core support of the entire antibacterial polyester staple fiber structure, is set to a thickness of 200 mm to ensure the stability and durability of the product. This thickness design not only provides sufficient strength and abrasion resistance, but also effectively resists the impact and friction of the external environment, extending the product's service life. The base layer 1 is composed of multiple bio-based polyester fiber filaments 101 twisted together. These bio-based polyester fiber filaments 101 have renewable and environmentally friendly characteristics, which can reduce environmental pollution, while ensuring the comfort and breathability of the base layer 1.
[0029] The antibacterial layer 2 is 20 mm thick and is composed of multiple antibacterial polyester short fiber filaments 201 bonded together, and antibacterial microcapsules 202 are embedded inside the antibacterial layer 2.
[0030] The antibacterial layer 2 is set at a thickness of 20 millimeters, ensuring effective antibacterial action while avoiding discomfort caused by excessive thickness. Furthermore, antibacterial microcapsules 202 are embedded within the antibacterial layer 2. These microcapsules release antibacterial substances upon contact with bacteria, further enhancing the antibacterial effect. This dual antibacterial mechanism ensures the product's hygiene and safety.
[0031] The breathable and moisturizing layer 3 has a thickness of fifty millimeters. It is composed of a polyester fiber layer 301 and a nanofiber membrane layer 302. The thickness of the breathable and moisturizing layer 3 is set at fifty millimeters to provide excellent breathability and moisturizing performance. The two layers work together to achieve good breathability and moisturizing effect. The nanofiber membrane layer 302 is attached to the upper surface of the polyester fiber layer 301 by impregnation. This combination not only improves the overall strength of the breathable and moisturizing layer 3, but also ensures its long-term durability and reliability. The surfaces of both the polyester fiber layer 301 and the nanofiber membrane layer 302 are provided with microporous structures. Through the microporous structures, the polyester fiber layer 301 and the nanofiber membrane layer 302 effectively block external pollutants while allowing air and water molecules to pass freely, thereby maintaining the skin's breathing and moisture balance.
[0032] The thickness of the eco-protective fiber layer 4 is 30 mm, and the surface of the eco-protective fiber layer 4 is coated with a waterproof and oil-repellent coating. The waterproof and oil-repellent coating is a microporous coating. The thickness of the eco-protective fiber layer 4 is set at 30 mm to provide additional protective performance. The surface of this layer is coated with a waterproof and oil-repellent coating. This coating uses microporous technology, which can block the intrusion of moisture and oil without affecting breathability. This design allows the eco-protective fiber layer 4 to keep the skin dry and clean while effectively resisting the erosion of harsh external environments.
[0033] The thickness of the skin-friendly layer 5 is fifty millimeters. The skin-friendly layer 5 is composed of a skin-friendly non-woven fabric 501 and a micro-nano elastic fiber layer 502, which are thermally bonded together. The micro-nano elastic fiber layer 502 is located on the upper surface of the skin-friendly non-woven fabric 501. The skin-friendly non-woven fabric 501 has good breathability and softness, which can conform to the skin and provide a comfortable touch. The micro-nano elastic fiber layer 502 has excellent elasticity and resilience, which can freely stretch and contract with the movement of the skin, ensuring comfort and fit when wearing.
[0034] The working principle of the above embodiments is as follows:
[0035] The base layer 1, as the core support part of the entire antibacterial polyester staple fiber structure, is made of multiple bio-based polyester fiber filaments 101 twisted together with a thickness of 200 mm, which ensures the stability and durability of the product.
[0036] The antibacterial layer 2 is composed of multiple antibacterial polyester short fiber filaments 201 bonded together, with antibacterial microcapsules 202 embedded inside. The antibacterial polyester short fiber filaments 201 themselves have antibacterial properties, while the antibacterial microcapsules 202 can release antibacterial substances when in contact with bacteria. This dual antibacterial mechanism further enhances the antibacterial effect.
[0037] The breathable and moisturizing layer 3 is composed of a polyester fiber layer 301 and a nanofiber membrane layer 302. The polyester fiber layer 301 has good moisture absorption and wicking properties, and the microporous structure of the polyester fiber layer 301 and the nanofiber membrane layer 302 achieves high-efficiency breathability and moisturizing. The two work together to effectively block external pollutants while allowing air and water molecules to pass through freely.
[0038] The ecological protective fiber layer 4 has a microporous waterproof and oil-resistant coating on its surface. This coating uses microporous technology to block the intrusion of moisture and oil without affecting the breathability.
[0039] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A bacteria-proof polyester staple fiber, characterized by, Include: The base layer (1), the antibacterial layer (2) arranged at the bottom of the base layer (1), the breathable and moisturizing layer (3) arranged at the bottom of the antibacterial layer (2), the ecological protection fiber layer (4) arranged at the bottom of the breathable and moisturizing layer (3), and the skin-friendly layer (5) arranged at the bottom of the ecological protection fiber layer (4).
2. The bacteria-proof polyester staple fiber according to claim 1, characterized in that: The thickness of the base layer (1) is two hundred millimeters, and the base layer (1) is composed of twisted and plied multiple bio-based polyester fiber filaments (101).
3. The bacteria-proof polyester staple fiber according to claim 1, wherein: The thickness of the antibacterial layer (2) is twenty millimeters, and the antibacterial layer (2) is composed of multiple antibacterial polyester staple fiber filaments (201) bonded together, and the antibacterial layer (2) is embedded with antibacterial microcapsules (202) inside.
4. The bacteria-proof polyester staple fiber according to claim 1, wherein: The thickness of the breathable and moisturizing layer (3) is fifty millimeters, and the breathable and moisturizing layer (3) is composed of a polyester fiber layer (301) and a nanofiber membrane layer (302).
5. The bacteria-proof polyester staple fiber according to claim 4, wherein: The nanofiber membrane layer (302) is attached to the upper surface of the polyester fiber layer (301) by immersion, and the surfaces of the polyester fiber layer (301) and the nanofiber membrane layer (302) are provided with microporous structures.
6. The bacteria-proof polyester staple fiber according to claim 1, wherein: The thickness of the ecological protection fiber layer (4) is thirty millimeters, and the surface of the ecological protection fiber layer (4) is coated with a waterproof and oil-proof coating, and the waterproof and oil-proof coating is a microporous coating.
7. The bacteria-proof polyester staple fiber according to claim 1, wherein: The thickness of the skin-friendly layer (5) is fifty millimeters, and the skin-friendly layer (5) is composed of a skin-friendly non-woven fabric (501) and a micro-nano elastic fiber layer (502) by heat bonding, and the micro-nano elastic fiber layer (502) is located on the upper surface of the skin-friendly non-woven fabric (501).