Ultrafine stainless steel monofilament semi-wrapped corrugated conductive cotton yarn

Abstract

The utility model discloses a kind of ultrafine stainless steel monofilament half-wrapping corrugated conductive cotton yarn, belong to textile technical field.The utility model's ultrafine stainless steel monofilament half-wrapping corrugated conductive cotton yarn is by one ultrafine stainless steel filament with half-wrapping form as outer wrapping yarn, is covered in cotton fiber outside to form half-wrapping composite yarn.The yarn presents corrugated appearance in natural state.Yarn breaking elongation of the yarn reaches about 38.5% after tensile property test, with good tensile property.The fabric woven by the yarn also has certain electromagnetic shielding performance, conductivity, and yarn main body is still cotton yarn, retains the softness of yarn, comfort, suitable for the development of functional fabric and clothing.

Description

Technical Field

[0001] This utility model relates to an ultra-fine stainless steel monofilament semi-wound corrugated conductive cotton yarn, belonging to the field of textile technology. Background Technology

[0002] In the textile industry, ring spinning, as a traditional spinning method, has advantages such as high output, simple operation, and even yarn texture with less hairiness. When spinning core-spun yarn using ring spinning, the spinning machine can be simply modified by adding a guide roller to achieve the spinning of core-spun yarn, making the operation simple and convenient.

[0003] Stainless steel fiber, due to its unique physical and chemical properties such as corrosion resistance, conductivity, and electromagnetic shielding capabilities, is widely used in the development of functional yarns. Currently, stainless steel filaments are mainly used as core yarns in core-spun yarns. Because the surface of stainless steel filaments is relatively smooth, when used alone as a core yarn, the outer short fibers can easily slip off, resulting in the core filament being exposed. Therefore, when stainless steel filaments are used as core yarns, they need to be plyed with other yarns to increase surface friction. When stainless steel filaments are used as outer yarns, because stainless steel filaments are rigid materials, and most commercially available yarns use 35 μm diameter stainless steel filaments as outer yarns covering short fibers, the comfort and tensile properties of the yarn are reduced. Fabrics woven from this type of yarn may experience a certain degree of itchiness, and the fabric elasticity will also decrease. Utility Model Content

[0004] The purpose of this invention is to provide an ultra-fine stainless steel monofilament semi-wound corrugated conductive cotton yarn to solve the problem of reduced yarn comfort and tensile performance when stainless steel filaments are used as outer wrapping yarn.

[0005] To achieve the above objectives, this utility model provides the following technical solution: without changing the pre-spinning process of cotton yarn, conductive filaments are wrapped together with cotton yarn on a ring spinning machine to obtain a composite yarn of short fibers and filaments. Specifically, a guide roller is added to the spinning machine cradle. Ultra-fine stainless steel filaments wound into a bobbin are fed into the front roller through the guide roller. The stainless steel filaments self-wrap around the cotton yarn in the twisting triangle area and pass through the guide hook and wire traveler along with the cotton yarn to form a semi-wrapped composite yarn.

[0006] A type of ultrafine stainless steel monofilament semi-wound corrugated conductive cotton yarn, characterized in that the ultrafine stainless steel monofilament semi-wound corrugated conductive cotton yarn comprises an outer filament and an inner fiber, wherein the outer filament covers the outside of the inner fiber; the outer filament is a metal filament, and the inner fiber is a natural plant fiber; the breaking elongation of the ultrafine stainless steel monofilament semi-wound corrugated conductive cotton yarn reaches approximately 38.5%; and the resistance of the ultrafine stainless steel monofilament semi-wound corrugated conductive cotton yarn is 1.3Ω~1.5Ω.

[0007] In one embodiment of this utility model, the outer filament is in the form of a single filament semi-wrapped filament.

[0008] In one embodiment of this utility model, the outer filament material is an ultra-fine stainless steel filament with a diameter of 16 μm.

[0009] In one embodiment of this utility model, the ultrafine stainless steel monofilament semi-wrapped conductive cotton yarn presents a wavy appearance in its natural state.

[0010] One of the key technical challenges in producing this yarn lies in monitoring whether the stainless steel monofilament is successfully wound onto the cotton yarn. Because the stainless steel monofilament is only 16 μm in diameter, it is difficult to see with the naked eye, and the filament cannot be observed under tension unwinding, thus making it impossible to determine whether the filament is wound onto the cotton yarn. In actual processing, the filament can be judged by observing whether the cotton yarn at the front roller exit is bent. Additionally, strong light can be used, with the direction of the light source constantly changed, to determine whether the stainless steel filament is under tension unwinding. Furthermore, due to the low visibility of the stainless steel monofilament, the placement of the stainless steel monofilament bobbins and the unwinding path must be carefully designed to avoid intersecting with the roving path and affecting unwinding.

[0011] Because it uses ultra-fine stainless steel monofilament with low linear density and high flexibility as the winding filament, the stainless steel monofilament is directly introduced into the front roller during the cotton spinning process. The stainless steel monofilament will automatically wind around the cotton yarn and pass through the yarn guide hook and the wire traveler, automatically completing the yarn feeding and splicing process without producing obvious splices such as filament bending, making the operation simple. In addition, unlike the active unwinding method of conventional core-spun yarn and wrapped yarn filaments, stainless steel monofilaments, due to their low linear density, low unwinding tension, and low coefficient of friction, can be passively unwound from the bobbin without the need for an additional core yarn unwinding device, making the processing method convenient.

[0012] The beneficial effects of this utility model are:

[0013] Stainless steel monofilaments have low linear density and low breaking strength, while ordinary cotton yarn also has low breaking strength and elongation. However, after the two are wrapped together to form a composite yarn, the breaking strength of the yarn reaches 10.05N~10.21N, showing an improvement. Meanwhile, the breaking elongation reaches 37.98%~38.76%, a significant increase, making it less prone to breakage compared to before the composite process. This is because the stainless steel filament is partially wrapped around the surface of the cotton yarn. When the yarn is stretched by external force, there is a coordinated deformation at the microscale between the cotton fibers and the stainless steel filament. The deformation of the cotton fibers buffers the rigidity of the stainless steel filament, allowing the overall structure to withstand greater deformation before breakage, thus significantly improving tensile performance.

[0014] Conductivity tests on the yarn revealed a resistance of 1.3Ω to 1.5Ω for the stainless steel monofilament wrapped around the cotton yarn, indicating excellent conductivity. Furthermore, the stainless steel monofilament achieves shielding by reflecting and absorbing electromagnetic waves. When electromagnetic waves encounter stainless steel, a current is generated on the surface of the filament, converting electromagnetic energy into heat energy and thus attenuating the electromagnetic waves. Therefore, this yarn imparts excellent electrical properties to the cotton yarn without altering its main composition.

[0015] Because the stainless steel has a diameter of only 16 μm and uses a single-filament semi-wrap form, it enhances the yarn's conductivity and electromagnetic shielding performance while still using cotton yarn as the main component, thus preserving the yarn's softness and comfort. Therefore, fabrics woven with this yarn experience less of a decrease in comfort.

[0016] The thermal conductivity of stainless steel filaments is based on the presence of a large number of free electrons within the metal. These electrons are not fixed to any specific atom and can move freely within the metal. When a portion of the metal is heated, these free electrons absorb energy and begin to vibrate, subsequently rapidly transferring this energy to surrounding atoms and electrons, thus achieving rapid heat conduction. Therefore, stainless steel filaments wound around the surface of cotton yarn can accelerate heat conduction and achieve excellent heat dissipation.

[0017] This yarn combines the softness and comfort of cotton yarn with the conductivity and radiation protection properties of stainless steel filaments, demonstrating broad application potential in multiple fields. Its excellent thermal conductivity makes it ideal for summer clothing, providing a cool and lightweight feel while maintaining good durability. Furthermore, due to the conductivity and radiation protection properties of stainless steel, this yarn can also be used to produce electromagnetic shielding fabrics, suitable for environments requiring protection against electromagnetic interference. The corrosion resistance of stainless steel also makes it an ideal material for manufacturing industrial fabrics, protective equipment, and medical textiles. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] The markings in the image are: 1. Ultra-fine stainless steel filament, 2. Cotton fiber. Detailed Implementation

[0020] To enable the present invention to achieve the above-mentioned objectives, features and advantages and to make it more easily understood, the present invention will be further described in detail below with reference to specific embodiments.

[0021] like Figure 1As shown, an ultrafine stainless steel monofilament semi-wound corrugated conductive cotton yarn is disclosed. The ultrafine stainless steel monofilament semi-wound conductive cotton yarn comprises an ultrafine stainless steel filament 1 and cotton fibers 2. The ultrafine stainless steel filament has a diameter of 16 μm and is wrapped around the cotton fiber 2 in a semi-wound monofilament manner. The ultrafine stainless steel filament 1 and the cotton fiber 2 differ in elasticity, rigidity, and twist, causing the yarn to form a... Figure 1 The wavy appearance shown.

[0022] The resistance of the semi-wound conductive cotton yarn made of ultra-fine stainless steel monofilament was tested using a multimeter. The average resistance of the yarn was 1.5Ω, which reflects the excellent conductivity of the yarn.

[0023] Tensile properties of the yarn were tested. Referring to GB / T 3916-2013 "Determination of breaking strength and elongation at break of single yarn in packaged textiles (CRE method)," the tensile breaking strength and elongation of the semi-wrapped corrugated conductive cotton yarn with ultrafine stainless steel monofilament were tested. Data analysis showed that the breaking strength of the yarn reached 10.13 N, indicating an improvement, while the elongation at break reached 38.52%, a significant increase, making it less prone to breakage compared to before lamination.

[0024] The yarn evenness was tested. Referring to GB / T 3292.1-2008 "Textiles - Test Methods for Yarn Evenness - Part 1: Capacitance Method", the evenness of the ultrafine stainless steel monofilament semi-wound corrugated conductive cotton yarn was tested. The data analysis showed that the average yarn evenness was 12.23%, which meets the standard of first-class product in the national standard, indicating good yarn evenness.

[0025] Referring to GB / T 30142-2013 "Method for Measuring the Shielding Effectiveness of Planar Electromagnetic Shielding Materials", the electromagnetic shielding performance of woven fabrics using this yarn as the weft yarn was tested using a DR-913G fabric electromagnetic radiation protection performance tester, and compared with pure cotton fabric samples of the same parameters and specifications.

[0026] With a starting frequency of 0.3MHz, an ending frequency of 300MHz, a center frequency of 150.15MHz, and a bandwidth of 299.7MHz, and frequency standards of 30MHz, 180MHz, 210MHz, and 240MHz, data analysis shows that the average electromagnetic shielding of fabrics with stainless steel weft yarns is -16.65dB, while the average electromagnetic shielding of pure cotton fabrics is -1.68dB. This indicates that woven fabrics using this yarn as the weft yarn already possess a certain level of electromagnetic shielding effectiveness. If this yarn is also used for the warp yarns, the electromagnetic shielding effectiveness of the fabric will be further improved.

[0027] Multiple test data show that the breaking elongation of this yarn reaches 38.5%, which is significantly higher than the breaking elongation of 6.79% of pure cotton yarn. This improvement in breaking elongation, achieved through the wrapping of stainless steel filaments, makes the yarn more elastic and softer, thus enhancing the durability of fabrics made from it. Because the ultra-fine stainless steel monofilaments are sufficiently soft, the semi-wrapped stainless steel filaments do not affect the original comfort, breathability, or skin-friendliness of the cotton yarn. Therefore, fabrics made from this yarn will not cause itching or other discomfort upon contact with the skin. Furthermore, this yarn possesses excellent electrical conductivity, thermal conductivity, and electromagnetic shielding properties, demonstrating broad application prospects in the development of functional fabrics and apparel.

Claims

1. A type of ultrafine stainless steel monofilament semi-wound corrugated conductive cotton yarn, comprising an outer filament and an inner fiber, characterized in that, The outer filament is wrapped around the inner fiber; the outer filament is a stainless steel monofilament and the inner fiber is cotton fiber; the elongation at break of the semi-wound corrugated conductive cotton yarn made of ultrafine stainless steel monofilament is 35~40%; the resistance of the semi-wound corrugated conductive cotton yarn made of ultrafine stainless steel monofilament is 1.3Ω~1.5Ω.

2. The ultrafine stainless steel monofilament semi-wound corrugated conductive cotton yarn according to claim 1, characterized in that, The outer filament is in a single-filament semi-wrapped form.

3. The ultrafine stainless steel monofilament semi-wound corrugated conductive cotton yarn according to claim 1, characterized in that, The outer filament is made of ultra-fine stainless steel filament with a diameter of 16μm.

4. The ultrafine stainless steel monofilament semi-wound corrugated conductive cotton yarn according to claim 1, characterized in that, The ultra-fine stainless steel monofilament semi-wound corrugated conductive cotton yarn presents a corrugated appearance in its natural state.

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