Flame-retardant polyester coated yarn

Abstract

The utility model discloses a flame-retardant polyester coated yarn which comprises a core yarn, a coated fiber layer, a first fasciated yarn and a second fasciated yarn, the covering fiber layer covers the outer part of the core yarn; the first fasciated yarn and the second fasciated yarn are spirally wound outside the wrapping fiber layer in opposite directions; the core yarns are elastic yarns; the coating fiber layer is a flame-retardant fiber layer; the first fasciated yarn is flame-retardant polyester filament yarn; the second fasciated yarn comprises mildew-proof core yarn and flame-retardant fasciated yarn; and the flame-retardant fasciated yarns are basalt fiber filaments. Based on the flame-retardant polyester coated yarn, the elastic yarn can improve the elasticity of the whole yarn, and the polyimide fiber, the flame-retardant polyester filament yarn, the spectrum heating flame-retardant antibacterial polyester fiber filament yarn and the basalt fiber filament yarn are utilized to provide good flame-retardant performance for the whole yarn. The spectrum heating flame-retardant antibacterial polyester fiber filament also endows the whole yarn with a spectrum heating function and antibacterial performance, and is suitable for manufacturing a heat preservation quilt.

Description

Technical Field

[0001] This utility model relates to a covered yarn, specifically a flame-retardant polyester covered yarn. Background Technology

[0002] Polyester is a synthetic fiber that is widely used in the textile industry due to its many excellent properties, such as high strength, good elasticity, strong abrasion resistance, and good chemical stability. It is used extensively in clothing, home textiles, industrial textiles, and many other fields.

[0003] However, polyester fiber is a flammable fiber with a low limiting oxygen index, generally around 20%-22%. This means that polyester is easily ignited in the presence of a ignition source, and the burning rate is relatively fast, producing molten dripping. This combustion characteristic poses a serious safety hazard in situations with high fire protection requirements, such as theater curtains and hotel curtains in public places, car seat covers and aircraft interiors in vehicles, and fire-resistant clothing, tarpaulins, and tarpaulins in industrial sites. With increasing public awareness of safety and the continuous improvement of relevant safety regulations, the requirements for the flame-retardant properties of textiles are becoming increasingly stringent. To reduce the harm of fire accidents, it is necessary to provide a flame-retardant polyester-coated yarn. Utility Model Content

[0004] The purpose of this invention is to provide a flame-retardant polyester covered yarn, which is designed to have good flame-retardant properties compared with ordinary polyester filament, and the textiles made from it can reduce the harm of fire accidents.

[0005] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows: a flame-retardant polyester covered yarn, comprising: a core yarn, a covering fiber layer, a first wrapping yarn, and a second wrapping yarn; the covering fiber layer covers the outside of the core yarn; the first wrapping yarn and the second wrapping yarn are spirally wound around the outside of the covering fiber layer in opposite directions; the core yarn is an elastic yarn; the covering fiber layer is a flame-retardant fiber layer; the first wrapping yarn is a flame-retardant polyester filament; the second wrapping yarn comprises an anti-mildew core yarn and a flame-retardant wrapping yarn, the flame-retardant wrapping yarn being spirally wound around the outside of the anti-mildew core yarn; the flame-retardant wrapping yarn is a basalt fiber filament.

[0006] Based on the above scheme and as a preferred embodiment of the above scheme: the elastic yarn is T400 filament.

[0007] Based on the above scheme and as a preferred embodiment of the above scheme: the flame-retardant fiber used in the flame-retardant fiber layer is polyimide fiber.

[0008] Based on the above scheme and as a preferred embodiment of the above scheme: the flame-retardant polyester filament is a spectrally heated flame-retardant and antibacterial polyester fiber filament.

[0009] Based on the above scheme and as a preferred embodiment of the above scheme: the anti-mildew core yarn is antibacterial and anti-mildew polypropylene fiber yarn.

[0010] The beneficial effects of this utility model are as follows: Based on the flame-retardant polyester covered yarn of this utility model, the elastic yarn as the core yarn can improve the overall elasticity of the yarn to a certain extent. The use of polyimide fiber, flame-retardant polyester filament, spectral heating flame-retardant and antibacterial polyester fiber filament and basalt fiber filament provides the yarn with good flame-retardant properties. At the same time, the spectral heating flame-retardant and antibacterial polyester fiber filament also endows the yarn with spectral heating function and antibacterial properties. The mildew-proof core yarn provides the yarn with certain mildew-proof properties, making it suitable for making thermal insulation quilts. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the cross-sectional structure of the flame-retardant polyester covered yarn involved in this utility model;

[0012] In the diagram: 1-core yarn, 2-coating fiber layer, 3-first wrapping yarn, 4-second wrapping yarn, 5-anti-mildew core yarn, 6-flame retardant wrapping yarn. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0014] Combination Figure 1 This embodiment provides a detailed description of a flame-retardant polyester covered yarn, comprising: a core yarn 1, a covering fiber layer 2, a first wrapping yarn 3, and a second wrapping yarn 4; the covering fiber layer 2 covers the outside of the core yarn 1; the first wrapping yarn 3 and the second wrapping yarn 4 are spirally wound around the outside of the covering fiber layer 2 in opposite directions; the core yarn 1 is an elastic yarn; the covering fiber layer 2 is a flame-retardant fiber layer; the first wrapping yarn 3 is a flame-retardant polyester filament; the second wrapping yarn 4 includes an anti-mildew core yarn 5 and a flame-retardant wrapping yarn 6, the flame-retardant wrapping yarn 6 being spirally wound around the outside of the anti-mildew core yarn 5; the flame-retardant wrapping yarn 6 is a basalt fiber filament.

[0015] Basalt is a typical silicate, with its main chemical components being SiO2 and Al2O3. 3、 CaO also contains small amounts of Fe2O3, FeO, TiO2, K2O, etc. Basalt fiber filaments are made by continuously melting basalt at an ultra-high temperature of 1450-1500℃, and then drawing it into filaments at high speed using a high-temperature resistant platinum-rhodium alloy spinneret. Basalt fiber has good elasticity and chemical stability, high corrosion resistance in acidic, alkaline, and high-humidity environments, excellent tensile strength and elastic modulus, excellent high-temperature resistance, and high thermal insulation properties. It is an inherently flame-retardant fiber.

[0016] The first wrapping yarn 3 and the second wrapping yarn 4 form a mesh-like cross-binding and wrapping structure on the outside of the fiber layer 2, which greatly enhances the structural stability of the yarn. This mesh structure can effectively reduce the wear of the core yarn caused by external friction and greatly help to improve the overall wear resistance of the yarn.

[0017] Furthermore, the elastic yarn is T400 filament. T400 filament is composed of PET and PTT compounded side by side. The PET and PTT are processed and compounded in a composite spinneret, and then stretched and heat-set. T400 filament has a large elastic elongation and good elastic recovery, and its elasticity is better than that of PTT and PET fibers. It also has high tensile strength, a soft hand feel, good moisture absorption and perspiration wicking, and good wrinkle resistance, which can provide good elasticity for the yarn body.

[0018] Furthermore, the flame-retardant fiber used in the flame-retardant fiber layer is polyimide fiber. Polyimide fiber refers to a type of aromatic heterocyclic polymer containing imide groups on its molecular chain, spun from polyamic acid or polyimide solution. It possesses excellent heat resistance, low-temperature resistance, mechanical properties, and corrosion resistance. Polyimide fiber begins to thermally decompose at around 570℃, exhibits low strength loss at 200℃, has a limiting oxygen index greater than 45%, and demonstrates good flame-retardant properties.

[0019] Furthermore, the flame-retardant polyester filament is a spectrophotometric heat-generating flame-retardant and antibacterial polyester fiber filament. This spectrophotometric heat-generating flame-retardant and antibacterial polyester fiber filament is made from semi-dull polyethylene terephthalate chips as raw material, with spectrophotometric heat-generating flame-retardant and antibacterial composite functional masterbatch added via melt blending during the spinning process, followed by melt spinning. Specifically, the spectrophotometric heat-generating flame-retardant and antibacterial polyester fiber filament has a specification of 222 dtex / 72f. When exposed to light for 5-10 minutes, the temperature can reach 55-60℃, the limiting oxygen index is greater than 30%, and the smoldering and afterflame times are both 0. It exhibits an inhibition rate of over 98.0% against Staphylococcus aureus, Escherichia coli, and Candida albicans.

[0020] Furthermore, the anti-mildew core yarn 5 is an antibacterial and anti-mildew polypropylene fiber yarn. The antibacterial and anti-mildew polypropylene fiber is prepared by selecting low-toxicity, high-temperature resistant thiabendazole and nano-zinc oxide as antibacterial and anti-mildew agents, through twin-screw co-extrusion and single-screw spinning processes. Thiabendazole has good antibacterial activity against Escherichia coli, and nano-zinc oxide has good antibacterial activity against Staphylococcus aureus. The antibacterial and anti-mildew polypropylene fiber achieves a mildew resistance level of 0, with an inhibition rate of 54.4% against Escherichia coli and 79.6% against Staphylococcus aureus.

[0021] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A flame-retardant polyester covered yarn, characterized in that, include: The structure comprises a core yarn (1), a covering fiber layer (2), a first wrapping yarn (3), and a second wrapping yarn (4); the covering fiber layer (2) covers the outside of the core yarn (1); the first wrapping yarn (3) and the second wrapping yarn (4) are spirally wound around the outside of the covering fiber layer (2) in opposite directions; the core yarn (1) is an elastic yarn; the covering fiber layer (2) is a flame-retardant fiber layer; the first wrapping yarn (3) is a flame-retardant polyester filament; the second wrapping yarn (4) includes an anti-mildew core yarn (5) and a flame-retardant wrapping yarn (6), the flame-retardant wrapping yarn (6) being spirally wound around the outside of the anti-mildew core yarn (5); the flame-retardant wrapping yarn (6) is a basalt fiber filament.

2. The flame-retardant polyester covered yarn according to claim 1, characterized in that, The elastic yarn is T400 filament.

3. The flame-retardant polyester covered yarn according to claim 1, characterized in that, The flame-retardant fiber used in the flame-retardant fiber layer is polyimide fiber.

4. The flame-retardant polyester covered yarn according to claim 1, characterized in that, The flame-retardant polyester filament is a spectrally heated flame-retardant and antibacterial polyester fiber filament.

5. The flame-retardant polyester covered yarn according to claim 1, characterized in that, The anti-mildew core yarn (5) is an antibacterial and anti-mildew polypropylene fiber yarn.

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